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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 #include <asm/s390_rdev.h>
  28
  29 #include "qeth_core.h"
  30 #include "qeth_core_offl.h"
  31
  32 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  33         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  34         /*                   N  P  A    M  L  V                      H  */
  35         [QETH_DBF_SETUP] = {"qeth_setup",
  36                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  37         [QETH_DBF_QERR]  = {"qeth_qerr",
  38                                 2, 1,   8, 2, &debug_hex_ascii_view, NULL},
  39         [QETH_DBF_TRACE] = {"qeth_trace",
  40                                 4, 1,   8, 3, &debug_hex_ascii_view, NULL},
  41         [QETH_DBF_MSG]   = {"qeth_msg",
  42                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  43         [QETH_DBF_SENSE] = {"qeth_sense",
  44                                 2, 1,  64, 2, &debug_hex_ascii_view, NULL},
  45         [QETH_DBF_MISC]  = {"qeth_misc",
  46                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  47         [QETH_DBF_CTRL]  = {"qeth_control",
  48                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  49 };
  50 EXPORT_SYMBOL_GPL(qeth_dbf);
  51
  52 struct qeth_card_list_struct qeth_core_card_list;
  53 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  54 struct kmem_cache *qeth_core_header_cache;
  55 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  56
  57 static struct device *qeth_core_root_dev;
  58 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  59 static struct lock_class_key qdio_out_skb_queue_key;
  60
  61 static void qeth_send_control_data_cb(struct qeth_channel *,
  62                         struct qeth_cmd_buffer *);
  63 static int qeth_issue_next_read(struct qeth_card *);
  64 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  65 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  66 static void qeth_free_buffer_pool(struct qeth_card *);
  67 static int qeth_qdio_establish(struct qeth_card *);
  68
  69
  70 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  71                 struct qdio_buffer *buffer, int is_tso,
  72                 int *next_element_to_fill)
  73 {
  74         struct skb_frag_struct *frag;
  75         int fragno;
  76         unsigned long addr;
  77         int element, cnt, dlen;
  78
  79         fragno = skb_shinfo(skb)->nr_frags;
  80         element = *next_element_to_fill;
  81         dlen = 0;
  82
  83         if (is_tso)
  84                 buffer->element[element].flags =
  85                         SBAL_FLAGS_MIDDLE_FRAG;
  86         else
  87                 buffer->element[element].flags =
  88                         SBAL_FLAGS_FIRST_FRAG;
  89         dlen = skb->len - skb->data_len;
  90         if (dlen) {
  91                 buffer->element[element].addr = skb->data;
  92                 buffer->element[element].length = dlen;
  93                 element++;
  94         }
  95         for (cnt = 0; cnt < fragno; cnt++) {
  96                 frag = &skb_shinfo(skb)->frags[cnt];
  97                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  98                         frag->page_offset;
  99                 buffer->element[element].addr = (char *)addr;
 100                 buffer->element[element].length = frag->size;
 101                 if (cnt < (fragno - 1))
 102                         buffer->element[element].flags =
 103                                 SBAL_FLAGS_MIDDLE_FRAG;
 104                 else
 105                         buffer->element[element].flags =
 106                                 SBAL_FLAGS_LAST_FRAG;
 107                 element++;
 108         }
 109         *next_element_to_fill = element;
 110 }
 111
 112 static inline const char *qeth_get_cardname(struct qeth_card *card)
 113 {
 114         if (card->info.guestlan) {
 115                 switch (card->info.type) {
 116                 case QETH_CARD_TYPE_OSAE:
 117                         return " Guest LAN QDIO";
 118                 case QETH_CARD_TYPE_IQD:
 119                         return " Guest LAN Hiper";
 120                 default:
 121                         return " unknown";
 122                 }
 123         } else {
 124                 switch (card->info.type) {
 125                 case QETH_CARD_TYPE_OSAE:
 126                         return " OSD Express";
 127                 case QETH_CARD_TYPE_IQD:
 128                         return " HiperSockets";
 129                 case QETH_CARD_TYPE_OSN:
 130                         return " OSN QDIO";
 131                 default:
 132                         return " unknown";
 133                 }
 134         }
 135         return " n/a";
 136 }
 137
 138 /* max length to be returned: 14 */
 139 const char *qeth_get_cardname_short(struct qeth_card *card)
 140 {
 141         if (card->info.guestlan) {
 142                 switch (card->info.type) {
 143                 case QETH_CARD_TYPE_OSAE:
 144                         return "GuestLAN QDIO";
 145                 case QETH_CARD_TYPE_IQD:
 146                         return "GuestLAN Hiper";
 147                 default:
 148                         return "unknown";
 149                 }
 150         } else {
 151                 switch (card->info.type) {
 152                 case QETH_CARD_TYPE_OSAE:
 153                         switch (card->info.link_type) {
 154                         case QETH_LINK_TYPE_FAST_ETH:
 155                                 return "OSD_100";
 156                         case QETH_LINK_TYPE_HSTR:
 157                                 return "HSTR";
 158                         case QETH_LINK_TYPE_GBIT_ETH:
 159                                 return "OSD_1000";
 160                         case QETH_LINK_TYPE_10GBIT_ETH:
 161                                 return "OSD_10GIG";
 162                         case QETH_LINK_TYPE_LANE_ETH100:
 163                                 return "OSD_FE_LANE";
 164                         case QETH_LINK_TYPE_LANE_TR:
 165                                 return "OSD_TR_LANE";
 166                         case QETH_LINK_TYPE_LANE_ETH1000:
 167                                 return "OSD_GbE_LANE";
 168                         case QETH_LINK_TYPE_LANE:
 169                                 return "OSD_ATM_LANE";
 170                         default:
 171                                 return "OSD_Express";
 172                         }
 173                 case QETH_CARD_TYPE_IQD:
 174                         return "HiperSockets";
 175                 case QETH_CARD_TYPE_OSN:
 176                         return "OSN";
 177                 default:
 178                         return "unknown";
 179                 }
 180         }
 181         return "n/a";
 182 }
 183
 184 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 185                          int clear_start_mask)
 186 {
 187         unsigned long flags;
 188
 189         spin_lock_irqsave(&card->thread_mask_lock, flags);
 190         card->thread_allowed_mask = threads;
 191         if (clear_start_mask)
 192                 card->thread_start_mask &= threads;
 193         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 194         wake_up(&card->wait_q);
 195 }
 196 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 197
 198 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 199 {
 200         unsigned long flags;
 201         int rc = 0;
 202
 203         spin_lock_irqsave(&card->thread_mask_lock, flags);
 204         rc = (card->thread_running_mask & threads);
 205         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 206         return rc;
 207 }
 208 EXPORT_SYMBOL_GPL(qeth_threads_running);
 209
 210 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 211 {
 212         return wait_event_interruptible(card->wait_q,
 213                         qeth_threads_running(card, threads) == 0);
 214 }
 215 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 216
 217 void qeth_clear_working_pool_list(struct qeth_card *card)
 218 {
 219         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 220
 221         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 222         list_for_each_entry_safe(pool_entry, tmp,
 223                             &card->qdio.in_buf_pool.entry_list, list){
 224                         list_del(&pool_entry->list);
 225         }
 226 }
 227 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 228
 229 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 230 {
 231         struct qeth_buffer_pool_entry *pool_entry;
 232         void *ptr;
 233         int i, j;
 234
 235         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 236         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 237                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 238                 if (!pool_entry) {
 239                         qeth_free_buffer_pool(card);
 240                         return -ENOMEM;
 241                 }
 242                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 243                         ptr = (void *) __get_free_page(GFP_KERNEL);
 244                         if (!ptr) {
 245                                 while (j > 0)
 246                                         free_page((unsigned long)
 247                                                   pool_entry->elements[--j]);
 248                                 kfree(pool_entry);
 249                                 qeth_free_buffer_pool(card);
 250                                 return -ENOMEM;
 251                         }
 252                         pool_entry->elements[j] = ptr;
 253                 }
 254                 list_add(&pool_entry->init_list,
 255                          &card->qdio.init_pool.entry_list);
 256         }
 257         return 0;
 258 }
 259
 260 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 261 {
 262         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 263
 264         if ((card->state != CARD_STATE_DOWN) &&
 265             (card->state != CARD_STATE_RECOVER))
 266                 return -EPERM;
 267
 268         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 269         qeth_clear_working_pool_list(card);
 270         qeth_free_buffer_pool(card);
 271         card->qdio.in_buf_pool.buf_count = bufcnt;
 272         card->qdio.init_pool.buf_count = bufcnt;
 273         return qeth_alloc_buffer_pool(card);
 274 }
 275
 276 int qeth_set_large_send(struct qeth_card *card,
 277                 enum qeth_large_send_types type)
 278 {
 279         int rc = 0;
 280
 281         if (card->dev == NULL) {
 282                 card->options.large_send = type;
 283                 return 0;
 284         }
 285         if (card->state == CARD_STATE_UP)
 286                 netif_tx_disable(card->dev);
 287         card->options.large_send = type;
 288         switch (card->options.large_send) {
 289         case QETH_LARGE_SEND_EDDP:
 290                 card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 291                                         NETIF_F_HW_CSUM;
 292                 break;
 293         case QETH_LARGE_SEND_TSO:
 294                 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
 295                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 296                                                 NETIF_F_HW_CSUM;
 297                 } else {
 298                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 299                                                 NETIF_F_HW_CSUM);
 300                         card->options.large_send = QETH_LARGE_SEND_NO;
 301                         rc = -EOPNOTSUPP;
 302                 }
 303                 break;
 304         default: /* includes QETH_LARGE_SEND_NO */
 305                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 306                                         NETIF_F_HW_CSUM);
 307                 break;
 308         }
 309         if (card->state == CARD_STATE_UP)
 310                 netif_wake_queue(card->dev);
 311         return rc;
 312 }
 313 EXPORT_SYMBOL_GPL(qeth_set_large_send);
 314
 315 static int qeth_issue_next_read(struct qeth_card *card)
 316 {
 317         int rc;
 318         struct qeth_cmd_buffer *iob;
 319
 320         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 321         if (card->read.state != CH_STATE_UP)
 322                 return -EIO;
 323         iob = qeth_get_buffer(&card->read);
 324         if (!iob) {
 325                 dev_warn(&card->gdev->dev, "The qeth device driver "
 326                         "failed to recover an error on the device\n");
 327                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 328                         "available\n", dev_name(&card->gdev->dev));
 329                 return -ENOMEM;
 330         }
 331         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 332         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 333         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 334                               (addr_t) iob, 0, 0);
 335         if (rc) {
 336                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 337                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 338                 atomic_set(&card->read.irq_pending, 0);
 339                 qeth_schedule_recovery(card);
 340                 wake_up(&card->wait_q);
 341         }
 342         return rc;
 343 }
 344
 345 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 346 {
 347         struct qeth_reply *reply;
 348
 349         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 350         if (reply) {
 351                 atomic_set(&reply->refcnt, 1);
 352                 atomic_set(&reply->received, 0);
 353                 reply->card = card;
 354         };
 355         return reply;
 356 }
 357
 358 static void qeth_get_reply(struct qeth_reply *reply)
 359 {
 360         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 361         atomic_inc(&reply->refcnt);
 362 }
 363
 364 static void qeth_put_reply(struct qeth_reply *reply)
 365 {
 366         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 367         if (atomic_dec_and_test(&reply->refcnt))
 368                 kfree(reply);
 369 }
 370
 371 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 372                 struct qeth_card *card)
 373 {
 374         char *ipa_name;
 375         int com = cmd->hdr.command;
 376         ipa_name = qeth_get_ipa_cmd_name(com);
 377         if (rc)
 378                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 379                                 ipa_name, com, QETH_CARD_IFNAME(card),
 380                                         rc, qeth_get_ipa_msg(rc));
 381         else
 382                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 383                                 ipa_name, com, QETH_CARD_IFNAME(card));
 384 }
 385
 386 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 387                 struct qeth_cmd_buffer *iob)
 388 {
 389         struct qeth_ipa_cmd *cmd = NULL;
 390
 391         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 392         if (IS_IPA(iob->data)) {
 393                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 394                 if (IS_IPA_REPLY(cmd)) {
 395                         if (cmd->hdr.command < IPA_CMD_SETCCID ||
 396                             cmd->hdr.command > IPA_CMD_MODCCID)
 397                                 qeth_issue_ipa_msg(cmd,
 398                                                 cmd->hdr.return_code, card);
 399                         return cmd;
 400                 } else {
 401                         switch (cmd->hdr.command) {
 402                         case IPA_CMD_STOPLAN:
 403                                 dev_warn(&card->gdev->dev,
 404                                            "The link for interface %s on CHPID"
 405                                            " 0x%X failed\n",
 406                                            QETH_CARD_IFNAME(card),
 407                                            card->info.chpid);
 408                                 card->lan_online = 0;
 409                                 if (card->dev && netif_carrier_ok(card->dev))
 410                                         netif_carrier_off(card->dev);
 411                                 return NULL;
 412                         case IPA_CMD_STARTLAN:
 413                                 dev_info(&card->gdev->dev,
 414                                            "The link for %s on CHPID 0x%X has"
 415                                            " been restored\n",
 416                                            QETH_CARD_IFNAME(card),
 417                                            card->info.chpid);
 418                                 netif_carrier_on(card->dev);
 419                                 card->lan_online = 1;
 420                                 qeth_schedule_recovery(card);
 421                                 return NULL;
 422                         case IPA_CMD_MODCCID:
 423                                 return cmd;
 424                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 425                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 426                                 break;
 427                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 428                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 429                                 break;
 430                         default:
 431                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 432                                            "but not a reply!\n");
 433                                 break;
 434                         }
 435                 }
 436         }
 437         return cmd;
 438 }
 439
 440 void qeth_clear_ipacmd_list(struct qeth_card *card)
 441 {
 442         struct qeth_reply *reply, *r;
 443         unsigned long flags;
 444
 445         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 446
 447         spin_lock_irqsave(&card->lock, flags);
 448         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 449                 qeth_get_reply(reply);
 450                 reply->rc = -EIO;
 451                 atomic_inc(&reply->received);
 452                 list_del_init(&reply->list);
 453                 wake_up(&reply->wait_q);
 454                 qeth_put_reply(reply);
 455         }
 456         spin_unlock_irqrestore(&card->lock, flags);
 457 }
 458 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 459
 460 static int qeth_check_idx_response(unsigned char *buffer)
 461 {
 462         if (!buffer)
 463                 return 0;
 464
 465         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 466         if ((buffer[2] & 0xc0) == 0xc0) {
 467                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 468                            "with cause code 0x%02x%s\n",
 469                            buffer[4],
 470                            ((buffer[4] == 0x22) ?
 471                             " -- try another portname" : ""));
 472                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 473                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 474                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 475                 return -EIO;
 476         }
 477         return 0;
 478 }
 479
 480 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 481                 __u32 len)
 482 {
 483         struct qeth_card *card;
 484
 485         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 486         card = CARD_FROM_CDEV(channel->ccwdev);
 487         if (channel == &card->read)
 488                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 489         else
 490                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 491         channel->ccw.count = len;
 492         channel->ccw.cda = (__u32) __pa(iob);
 493 }
 494
 495 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 496 {
 497         __u8 index;
 498
 499         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 500         index = channel->io_buf_no;
 501         do {
 502                 if (channel->iob[index].state == BUF_STATE_FREE) {
 503                         channel->iob[index].state = BUF_STATE_LOCKED;
 504                         channel->io_buf_no = (channel->io_buf_no + 1) %
 505                                 QETH_CMD_BUFFER_NO;
 506                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 507                         return channel->iob + index;
 508                 }
 509                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 510         } while (index != channel->io_buf_no);
 511
 512         return NULL;
 513 }
 514
 515 void qeth_release_buffer(struct qeth_channel *channel,
 516                 struct qeth_cmd_buffer *iob)
 517 {
 518         unsigned long flags;
 519
 520         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 521         spin_lock_irqsave(&channel->iob_lock, flags);
 522         memset(iob->data, 0, QETH_BUFSIZE);
 523         iob->state = BUF_STATE_FREE;
 524         iob->callback = qeth_send_control_data_cb;
 525         iob->rc = 0;
 526         spin_unlock_irqrestore(&channel->iob_lock, flags);
 527 }
 528 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 529
 530 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 531 {
 532         struct qeth_cmd_buffer *buffer = NULL;
 533         unsigned long flags;
 534
 535         spin_lock_irqsave(&channel->iob_lock, flags);
 536         buffer = __qeth_get_buffer(channel);
 537         spin_unlock_irqrestore(&channel->iob_lock, flags);
 538         return buffer;
 539 }
 540
 541 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 542 {
 543         struct qeth_cmd_buffer *buffer;
 544         wait_event(channel->wait_q,
 545                    ((buffer = qeth_get_buffer(channel)) != NULL));
 546         return buffer;
 547 }
 548 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 549
 550 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 551 {
 552         int cnt;
 553
 554         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 555                 qeth_release_buffer(channel, &channel->iob[cnt]);
 556         channel->buf_no = 0;
 557         channel->io_buf_no = 0;
 558 }
 559 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 560
 561 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 562                   struct qeth_cmd_buffer *iob)
 563 {
 564         struct qeth_card *card;
 565         struct qeth_reply *reply, *r;
 566         struct qeth_ipa_cmd *cmd;
 567         unsigned long flags;
 568         int keep_reply;
 569
 570         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 571
 572         card = CARD_FROM_CDEV(channel->ccwdev);
 573         if (qeth_check_idx_response(iob->data)) {
 574                 qeth_clear_ipacmd_list(card);
 575                 qeth_schedule_recovery(card);
 576                 goto out;
 577         }
 578
 579         cmd = qeth_check_ipa_data(card, iob);
 580         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 581                 goto out;
 582         /*in case of OSN : check if cmd is set */
 583         if (card->info.type == QETH_CARD_TYPE_OSN &&
 584             cmd &&
 585             cmd->hdr.command != IPA_CMD_STARTLAN &&
 586             card->osn_info.assist_cb != NULL) {
 587                 card->osn_info.assist_cb(card->dev, cmd);
 588                 goto out;
 589         }
 590
 591         spin_lock_irqsave(&card->lock, flags);
 592         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 593                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 594                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 595                         qeth_get_reply(reply);
 596                         list_del_init(&reply->list);
 597                         spin_unlock_irqrestore(&card->lock, flags);
 598                         keep_reply = 0;
 599                         if (reply->callback != NULL) {
 600                                 if (cmd) {
 601                                         reply->offset = (__u16)((char *)cmd -
 602                                                         (char *)iob->data);
 603                                         keep_reply = reply->callback(card,
 604                                                         reply,
 605                                                         (unsigned long)cmd);
 606                                 } else
 607                                         keep_reply = reply->callback(card,
 608                                                         reply,
 609                                                         (unsigned long)iob);
 610                         }
 611                         if (cmd)
 612                                 reply->rc = (u16) cmd->hdr.return_code;
 613                         else if (iob->rc)
 614                                 reply->rc = iob->rc;
 615                         if (keep_reply) {
 616                                 spin_lock_irqsave(&card->lock, flags);
 617                                 list_add_tail(&reply->list,
 618                                               &card->cmd_waiter_list);
 619                                 spin_unlock_irqrestore(&card->lock, flags);
 620                         } else {
 621                                 atomic_inc(&reply->received);
 622                                 wake_up(&reply->wait_q);
 623                         }
 624                         qeth_put_reply(reply);
 625                         goto out;
 626                 }
 627         }
 628         spin_unlock_irqrestore(&card->lock, flags);
 629 out:
 630         memcpy(&card->seqno.pdu_hdr_ack,
 631                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 632                 QETH_SEQ_NO_LENGTH);
 633         qeth_release_buffer(channel, iob);
 634 }
 635
 636 static int qeth_setup_channel(struct qeth_channel *channel)
 637 {
 638         int cnt;
 639
 640         QETH_DBF_TEXT(SETUP, 2, "setupch");
 641         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 642                 channel->iob[cnt].data = (char *)
 643                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 644                 if (channel->iob[cnt].data == NULL)
 645                         break;
 646                 channel->iob[cnt].state = BUF_STATE_FREE;
 647                 channel->iob[cnt].channel = channel;
 648                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 649                 channel->iob[cnt].rc = 0;
 650         }
 651         if (cnt < QETH_CMD_BUFFER_NO) {
 652                 while (cnt-- > 0)
 653                         kfree(channel->iob[cnt].data);
 654                 return -ENOMEM;
 655         }
 656         channel->buf_no = 0;
 657         channel->io_buf_no = 0;
 658         atomic_set(&channel->irq_pending, 0);
 659         spin_lock_init(&channel->iob_lock);
 660
 661         init_waitqueue_head(&channel->wait_q);
 662         return 0;
 663 }
 664
 665 static int qeth_set_thread_start_bit(struct qeth_card *card,
 666                 unsigned long thread)
 667 {
 668         unsigned long flags;
 669
 670         spin_lock_irqsave(&card->thread_mask_lock, flags);
 671         if (!(card->thread_allowed_mask & thread) ||
 672               (card->thread_start_mask & thread)) {
 673                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 674                 return -EPERM;
 675         }
 676         card->thread_start_mask |= thread;
 677         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 678         return 0;
 679 }
 680
 681 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 682 {
 683         unsigned long flags;
 684
 685         spin_lock_irqsave(&card->thread_mask_lock, flags);
 686         card->thread_start_mask &= ~thread;
 687         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 688         wake_up(&card->wait_q);
 689 }
 690 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 691
 692 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 693 {
 694         unsigned long flags;
 695
 696         spin_lock_irqsave(&card->thread_mask_lock, flags);
 697         card->thread_running_mask &= ~thread;
 698         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 699         wake_up(&card->wait_q);
 700 }
 701 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 702
 703 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 704 {
 705         unsigned long flags;
 706         int rc = 0;
 707
 708         spin_lock_irqsave(&card->thread_mask_lock, flags);
 709         if (card->thread_start_mask & thread) {
 710                 if ((card->thread_allowed_mask & thread) &&
 711                     !(card->thread_running_mask & thread)) {
 712                         rc = 1;
 713                         card->thread_start_mask &= ~thread;
 714                         card->thread_running_mask |= thread;
 715                 } else
 716                         rc = -EPERM;
 717         }
 718         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 719         return rc;
 720 }
 721
 722 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 723 {
 724         int rc = 0;
 725
 726         wait_event(card->wait_q,
 727                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 728         return rc;
 729 }
 730 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 731
 732 void qeth_schedule_recovery(struct qeth_card *card)
 733 {
 734         QETH_DBF_TEXT(TRACE, 2, "startrec");
 735         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 736                 schedule_work(&card->kernel_thread_starter);
 737 }
 738 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 739
 740 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 741 {
 742         int dstat, cstat;
 743         char *sense;
 744
 745         sense = (char *) irb->ecw;
 746         cstat = irb->scsw.cmd.cstat;
 747         dstat = irb->scsw.cmd.dstat;
 748
 749         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 750                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 751                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 752                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 753                 dev_warn(&cdev->dev, "The qeth device driver "
 754                         "failed to recover an error on the device\n");
 755                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
 756                         dev_name(&cdev->dev), dstat, cstat);
 757                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 758                                 16, 1, irb, 64, 1);
 759                 return 1;
 760         }
 761
 762         if (dstat & DEV_STAT_UNIT_CHECK) {
 763                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 764                     SENSE_RESETTING_EVENT_FLAG) {
 765                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 766                         return 1;
 767                 }
 768                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 769                     SENSE_COMMAND_REJECT_FLAG) {
 770                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 771                         return 1;
 772                 }
 773                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 774                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 775                         return 1;
 776                 }
 777                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 778                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 779                         return 0;
 780                 }
 781                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 782                         return 1;
 783         }
 784         return 0;
 785 }
 786
 787 static long __qeth_check_irb_error(struct ccw_device *cdev,
 788                 unsigned long intparm, struct irb *irb)
 789 {
 790         if (!IS_ERR(irb))
 791                 return 0;
 792
 793         switch (PTR_ERR(irb)) {
 794         case -EIO:
 795                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 796                         dev_name(&cdev->dev));
 797                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 798                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 799                 break;
 800         case -ETIMEDOUT:
 801                 dev_warn(&cdev->dev, "A hardware operation timed out"
 802                         " on the device\n");
 803                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 804                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
 805                 if (intparm == QETH_RCD_PARM) {
 806                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 807
 808                         if (card && (card->data.ccwdev == cdev)) {
 809                                 card->data.state = CH_STATE_DOWN;
 810                                 wake_up(&card->wait_q);
 811                         }
 812                 }
 813                 break;
 814         default:
 815                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 816                         dev_name(&cdev->dev), PTR_ERR(irb));
 817                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 818                 QETH_DBF_TEXT(TRACE, 2, "  rc???");
 819         }
 820         return PTR_ERR(irb);
 821 }
 822
 823 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 824                 struct irb *irb)
 825 {
 826         int rc;
 827         int cstat, dstat;
 828         struct qeth_cmd_buffer *buffer;
 829         struct qeth_channel *channel;
 830         struct qeth_card *card;
 831         struct qeth_cmd_buffer *iob;
 832         __u8 index;
 833
 834         QETH_DBF_TEXT(TRACE, 5, "irq");
 835
 836         if (__qeth_check_irb_error(cdev, intparm, irb))
 837                 return;
 838         cstat = irb->scsw.cmd.cstat;
 839         dstat = irb->scsw.cmd.dstat;
 840
 841         card = CARD_FROM_CDEV(cdev);
 842         if (!card)
 843                 return;
 844
 845         if (card->read.ccwdev == cdev) {
 846                 channel = &card->read;
 847                 QETH_DBF_TEXT(TRACE, 5, "read");
 848         } else if (card->write.ccwdev == cdev) {
 849                 channel = &card->write;
 850                 QETH_DBF_TEXT(TRACE, 5, "write");
 851         } else {
 852                 channel = &card->data;
 853                 QETH_DBF_TEXT(TRACE, 5, "data");
 854         }
 855         atomic_set(&channel->irq_pending, 0);
 856
 857         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 858                 channel->state = CH_STATE_STOPPED;
 859
 860         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 861                 channel->state = CH_STATE_HALTED;
 862
 863         /*let's wake up immediately on data channel*/
 864         if ((channel == &card->data) && (intparm != 0) &&
 865             (intparm != QETH_RCD_PARM))
 866                 goto out;
 867
 868         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 869                 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
 870                 /* we don't have to handle this further */
 871                 intparm = 0;
 872         }
 873         if (intparm == QETH_HALT_CHANNEL_PARM) {
 874                 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
 875                 /* we don't have to handle this further */
 876                 intparm = 0;
 877         }
 878         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 879             (dstat & DEV_STAT_UNIT_CHECK) ||
 880             (cstat)) {
 881                 if (irb->esw.esw0.erw.cons) {
 882                         dev_warn(&channel->ccwdev->dev,
 883                                 "The qeth device driver failed to recover "
 884                                 "an error on the device\n");
 885                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 886                                 "0x%X dstat 0x%X\n",
 887                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 888                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 889                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 890                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 891                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 892                 }
 893                 if (intparm == QETH_RCD_PARM) {
 894                         channel->state = CH_STATE_DOWN;
 895                         goto out;
 896                 }
 897                 rc = qeth_get_problem(cdev, irb);
 898                 if (rc) {
 899                         qeth_clear_ipacmd_list(card);
 900                         qeth_schedule_recovery(card);
 901                         goto out;
 902                 }
 903         }
 904
 905         if (intparm == QETH_RCD_PARM) {
 906                 channel->state = CH_STATE_RCD_DONE;
 907                 goto out;
 908         }
 909         if (intparm) {
 910                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 911                 buffer->state = BUF_STATE_PROCESSED;
 912         }
 913         if (channel == &card->data)
 914                 return;
 915         if (channel == &card->read &&
 916             channel->state == CH_STATE_UP)
 917                 qeth_issue_next_read(card);
 918
 919         iob = channel->iob;
 920         index = channel->buf_no;
 921         while (iob[index].state == BUF_STATE_PROCESSED) {
 922                 if (iob[index].callback != NULL)
 923                         iob[index].callback(channel, iob + index);
 924
 925                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 926         }
 927         channel->buf_no = index;
 928 out:
 929         wake_up(&card->wait_q);
 930         return;
 931 }
 932
 933 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 934                  struct qeth_qdio_out_buffer *buf)
 935 {
 936         int i;
 937         struct sk_buff *skb;
 938
 939         /* is PCI flag set on buffer? */
 940         if (buf->buffer->element[0].flags & 0x40)
 941                 atomic_dec(&queue->set_pci_flags_count);
 942
 943         skb = skb_dequeue(&buf->skb_list);
 944         while (skb) {
 945                 atomic_dec(&skb->users);
 946                 dev_kfree_skb_any(skb);
 947                 skb = skb_dequeue(&buf->skb_list);
 948         }
 949         qeth_eddp_buf_release_contexts(buf);
 950         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 951                 if (buf->buffer->element[i].addr && buf->is_header[i])
 952                         kmem_cache_free(qeth_core_header_cache,
 953                                 buf->buffer->element[i].addr);
 954                 buf->is_header[i] = 0;
 955                 buf->buffer->element[i].length = 0;
 956                 buf->buffer->element[i].addr = NULL;
 957                 buf->buffer->element[i].flags = 0;
 958         }
 959         buf->next_element_to_fill = 0;
 960         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 961 }
 962
 963 void qeth_clear_qdio_buffers(struct qeth_card *card)
 964 {
 965         int i, j;
 966
 967         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 968         /* clear outbound buffers to free skbs */
 969         for (i = 0; i < card->qdio.no_out_queues; ++i)
 970                 if (card->qdio.out_qs[i]) {
 971                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 972                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 973                                                 &card->qdio.out_qs[i]->bufs[j]);
 974                 }
 975 }
 976 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 977
 978 static void qeth_free_buffer_pool(struct qeth_card *card)
 979 {
 980         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 981         int i = 0;
 982         QETH_DBF_TEXT(TRACE, 5, "freepool");
 983         list_for_each_entry_safe(pool_entry, tmp,
 984                                  &card->qdio.init_pool.entry_list, init_list){
 985                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 986                         free_page((unsigned long)pool_entry->elements[i]);
 987                 list_del(&pool_entry->init_list);
 988                 kfree(pool_entry);
 989         }
 990 }
 991
 992 static void qeth_free_qdio_buffers(struct qeth_card *card)
 993 {
 994         int i, j;
 995
 996         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
 997         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 998                 QETH_QDIO_UNINITIALIZED)
 999                 return;
1000         kfree(card->qdio.in_q);
1001         card->qdio.in_q = NULL;
1002         /* inbound buffer pool */
1003         qeth_free_buffer_pool(card);
1004         /* free outbound qdio_qs */
1005         if (card->qdio.out_qs) {
1006                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1007                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1008                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
1009                                                 &card->qdio.out_qs[i]->bufs[j]);
1010                         kfree(card->qdio.out_qs[i]);
1011                 }
1012                 kfree(card->qdio.out_qs);
1013                 card->qdio.out_qs = NULL;
1014         }
1015 }
1016
1017 static void qeth_clean_channel(struct qeth_channel *channel)
1018 {
1019         int cnt;
1020
1021         QETH_DBF_TEXT(SETUP, 2, "freech");
1022         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1023                 kfree(channel->iob[cnt].data);
1024 }
1025
1026 static int qeth_is_1920_device(struct qeth_card *card)
1027 {
1028         int single_queue = 0;
1029         struct ccw_device *ccwdev;
1030         struct channelPath_dsc {
1031                 u8 flags;
1032                 u8 lsn;
1033                 u8 desc;
1034                 u8 chpid;
1035                 u8 swla;
1036                 u8 zeroes;
1037                 u8 chla;
1038                 u8 chpp;
1039         } *chp_dsc;
1040
1041         QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1042
1043         ccwdev = card->data.ccwdev;
1044         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1045         if (chp_dsc != NULL) {
1046                 /* CHPP field bit 6 == 1 -> single queue */
1047                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1048                 kfree(chp_dsc);
1049         }
1050         QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1051         return single_queue;
1052 }
1053
1054 static void qeth_init_qdio_info(struct qeth_card *card)
1055 {
1056         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1057         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1058         /* inbound */
1059         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1060         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1061         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1062         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1063         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1064 }
1065
1066 static void qeth_set_intial_options(struct qeth_card *card)
1067 {
1068         card->options.route4.type = NO_ROUTER;
1069         card->options.route6.type = NO_ROUTER;
1070         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1071         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1072         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1073         card->options.fake_broadcast = 0;
1074         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1075         card->options.fake_ll = 0;
1076         card->options.performance_stats = 0;
1077         card->options.rx_sg_cb = QETH_RX_SG_CB;
1078 }
1079
1080 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1081 {
1082         unsigned long flags;
1083         int rc = 0;
1084
1085         spin_lock_irqsave(&card->thread_mask_lock, flags);
1086         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1087                         (u8) card->thread_start_mask,
1088                         (u8) card->thread_allowed_mask,
1089                         (u8) card->thread_running_mask);
1090         rc = (card->thread_start_mask & thread);
1091         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1092         return rc;
1093 }
1094
1095 static void qeth_start_kernel_thread(struct work_struct *work)
1096 {
1097         struct qeth_card *card = container_of(work, struct qeth_card,
1098                                         kernel_thread_starter);
1099         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1100
1101         if (card->read.state != CH_STATE_UP &&
1102             card->write.state != CH_STATE_UP)
1103                 return;
1104         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1105                 kthread_run(card->discipline.recover, (void *) card,
1106                                 "qeth_recover");
1107 }
1108
1109 static int qeth_setup_card(struct qeth_card *card)
1110 {
1111
1112         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1113         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1114
1115         card->read.state  = CH_STATE_DOWN;
1116         card->write.state = CH_STATE_DOWN;
1117         card->data.state  = CH_STATE_DOWN;
1118         card->state = CARD_STATE_DOWN;
1119         card->lan_online = 0;
1120         card->use_hard_stop = 0;
1121         card->dev = NULL;
1122         spin_lock_init(&card->vlanlock);
1123         spin_lock_init(&card->mclock);
1124         card->vlangrp = NULL;
1125         spin_lock_init(&card->lock);
1126         spin_lock_init(&card->ip_lock);
1127         spin_lock_init(&card->thread_mask_lock);
1128         card->thread_start_mask = 0;
1129         card->thread_allowed_mask = 0;
1130         card->thread_running_mask = 0;
1131         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1132         INIT_LIST_HEAD(&card->ip_list);
1133         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1134         if (!card->ip_tbd_list) {
1135                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1136                 return -ENOMEM;
1137         }
1138         INIT_LIST_HEAD(card->ip_tbd_list);
1139         INIT_LIST_HEAD(&card->cmd_waiter_list);
1140         init_waitqueue_head(&card->wait_q);
1141         /* intial options */
1142         qeth_set_intial_options(card);
1143         /* IP address takeover */
1144         INIT_LIST_HEAD(&card->ipato.entries);
1145         card->ipato.enabled = 0;
1146         card->ipato.invert4 = 0;
1147         card->ipato.invert6 = 0;
1148         /* init QDIO stuff */
1149         qeth_init_qdio_info(card);
1150         return 0;
1151 }
1152
1153 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1154 {
1155         struct qeth_card *card = container_of(slr, struct qeth_card,
1156                                         qeth_service_level);
1157         seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card),
1158                         card->info.mcl_level);
1159 }
1160
1161 static struct qeth_card *qeth_alloc_card(void)
1162 {
1163         struct qeth_card *card;
1164
1165         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1166         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1167         if (!card)
1168                 return NULL;
1169         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1170         if (qeth_setup_channel(&card->read)) {
1171                 kfree(card);
1172                 return NULL;
1173         }
1174         if (qeth_setup_channel(&card->write)) {
1175                 qeth_clean_channel(&card->read);
1176                 kfree(card);
1177                 return NULL;
1178         }
1179         card->options.layer2 = -1;
1180         card->qeth_service_level.seq_print = qeth_core_sl_print;
1181         register_service_level(&card->qeth_service_level);
1182         return card;
1183 }
1184
1185 static int qeth_determine_card_type(struct qeth_card *card)
1186 {
1187         int i = 0;
1188
1189         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1190
1191         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1192         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1193         while (known_devices[i][4]) {
1194                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1195                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1196                         card->info.type = known_devices[i][4];
1197                         card->qdio.no_out_queues = known_devices[i][8];
1198                         card->info.is_multicast_different = known_devices[i][9];
1199                         if (qeth_is_1920_device(card)) {
1200                                 dev_info(&card->gdev->dev,
1201                                         "Priority Queueing not supported\n");
1202                                 card->qdio.no_out_queues = 1;
1203                                 card->qdio.default_out_queue = 0;
1204                         }
1205                         return 0;
1206                 }
1207                 i++;
1208         }
1209         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1210         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1211                 "unknown type\n");
1212         return -ENOENT;
1213 }
1214
1215 static int qeth_clear_channel(struct qeth_channel *channel)
1216 {
1217         unsigned long flags;
1218         struct qeth_card *card;
1219         int rc;
1220
1221         QETH_DBF_TEXT(TRACE, 3, "clearch");
1222         card = CARD_FROM_CDEV(channel->ccwdev);
1223         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1224         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1225         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1226
1227         if (rc)
1228                 return rc;
1229         rc = wait_event_interruptible_timeout(card->wait_q,
1230                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1231         if (rc == -ERESTARTSYS)
1232                 return rc;
1233         if (channel->state != CH_STATE_STOPPED)
1234                 return -ETIME;
1235         channel->state = CH_STATE_DOWN;
1236         return 0;
1237 }
1238
1239 static int qeth_halt_channel(struct qeth_channel *channel)
1240 {
1241         unsigned long flags;
1242         struct qeth_card *card;
1243         int rc;
1244
1245         QETH_DBF_TEXT(TRACE, 3, "haltch");
1246         card = CARD_FROM_CDEV(channel->ccwdev);
1247         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1248         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1249         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1250
1251         if (rc)
1252                 return rc;
1253         rc = wait_event_interruptible_timeout(card->wait_q,
1254                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1255         if (rc == -ERESTARTSYS)
1256                 return rc;
1257         if (channel->state != CH_STATE_HALTED)
1258                 return -ETIME;
1259         return 0;
1260 }
1261
1262 static int qeth_halt_channels(struct qeth_card *card)
1263 {
1264         int rc1 = 0, rc2 = 0, rc3 = 0;
1265
1266         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1267         rc1 = qeth_halt_channel(&card->read);
1268         rc2 = qeth_halt_channel(&card->write);
1269         rc3 = qeth_halt_channel(&card->data);
1270         if (rc1)
1271                 return rc1;
1272         if (rc2)
1273                 return rc2;
1274         return rc3;
1275 }
1276
1277 static int qeth_clear_channels(struct qeth_card *card)
1278 {
1279         int rc1 = 0, rc2 = 0, rc3 = 0;
1280
1281         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1282         rc1 = qeth_clear_channel(&card->read);
1283         rc2 = qeth_clear_channel(&card->write);
1284         rc3 = qeth_clear_channel(&card->data);
1285         if (rc1)
1286                 return rc1;
1287         if (rc2)
1288                 return rc2;
1289         return rc3;
1290 }
1291
1292 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1293 {
1294         int rc = 0;
1295
1296         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1297         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1298
1299         if (halt)
1300                 rc = qeth_halt_channels(card);
1301         if (rc)
1302                 return rc;
1303         return qeth_clear_channels(card);
1304 }
1305
1306 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1307 {
1308         int rc = 0;
1309
1310         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1311         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1312                 QETH_QDIO_CLEANING)) {
1313         case QETH_QDIO_ESTABLISHED:
1314                 if (card->info.type == QETH_CARD_TYPE_IQD)
1315                         rc = qdio_cleanup(CARD_DDEV(card),
1316                                 QDIO_FLAG_CLEANUP_USING_HALT);
1317                 else
1318                         rc = qdio_cleanup(CARD_DDEV(card),
1319                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1320                 if (rc)
1321                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1322                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1323                 break;
1324         case QETH_QDIO_CLEANING:
1325                 return rc;
1326         default:
1327                 break;
1328         }
1329         rc = qeth_clear_halt_card(card, use_halt);
1330         if (rc)
1331                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1332         card->state = CARD_STATE_DOWN;
1333         return rc;
1334 }
1335 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1336
1337 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1338                                int *length)
1339 {
1340         struct ciw *ciw;
1341         char *rcd_buf;
1342         int ret;
1343         struct qeth_channel *channel = &card->data;
1344         unsigned long flags;
1345
1346         /*
1347          * scan for RCD command in extended SenseID data
1348          */
1349         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1350         if (!ciw || ciw->cmd == 0)
1351                 return -EOPNOTSUPP;
1352         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1353         if (!rcd_buf)
1354                 return -ENOMEM;
1355
1356         channel->ccw.cmd_code = ciw->cmd;
1357         channel->ccw.cda = (__u32) __pa(rcd_buf);
1358         channel->ccw.count = ciw->count;
1359         channel->ccw.flags = CCW_FLAG_SLI;
1360         channel->state = CH_STATE_RCD;
1361         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1362         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1363                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1364                                        QETH_RCD_TIMEOUT);
1365         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1366         if (!ret)
1367                 wait_event(card->wait_q,
1368                            (channel->state == CH_STATE_RCD_DONE ||
1369                             channel->state == CH_STATE_DOWN));
1370         if (channel->state == CH_STATE_DOWN)
1371                 ret = -EIO;
1372         else
1373                 channel->state = CH_STATE_DOWN;
1374         if (ret) {
1375                 kfree(rcd_buf);
1376                 *buffer = NULL;
1377                 *length = 0;
1378         } else {
1379                 *length = ciw->count;
1380                 *buffer = rcd_buf;
1381         }
1382         return ret;
1383 }
1384
1385 static int qeth_get_unitaddr(struct qeth_card *card)
1386 {
1387         int length;
1388         char *prcd;
1389         int rc;
1390
1391         QETH_DBF_TEXT(SETUP, 2, "getunit");
1392         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1393         if (rc) {
1394                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
1395                         dev_name(&card->gdev->dev), rc);
1396                 return rc;
1397         }
1398         card->info.chpid = prcd[30];
1399         card->info.unit_addr2 = prcd[31];
1400         card->info.cula = prcd[63];
1401         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1402                                (prcd[0x11] == _ascebc['M']));
1403         kfree(prcd);
1404         return 0;
1405 }
1406
1407 static void qeth_init_tokens(struct qeth_card *card)
1408 {
1409         card->token.issuer_rm_w = 0x00010103UL;
1410         card->token.cm_filter_w = 0x00010108UL;
1411         card->token.cm_connection_w = 0x0001010aUL;
1412         card->token.ulp_filter_w = 0x0001010bUL;
1413         card->token.ulp_connection_w = 0x0001010dUL;
1414 }
1415
1416 static void qeth_init_func_level(struct qeth_card *card)
1417 {
1418         if (card->ipato.enabled) {
1419                 if (card->info.type == QETH_CARD_TYPE_IQD)
1420                                 card->info.func_level =
1421                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1422                 else
1423                                 card->info.func_level =
1424                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1425         } else {
1426                 if (card->info.type == QETH_CARD_TYPE_IQD)
1427                 /*FIXME:why do we have same values for  dis and ena for
1428                   osae??? */
1429                         card->info.func_level =
1430                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1431                 else
1432                         card->info.func_level =
1433                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1434         }
1435 }
1436
1437 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1438                 void (*idx_reply_cb)(struct qeth_channel *,
1439                         struct qeth_cmd_buffer *))
1440 {
1441         struct qeth_cmd_buffer *iob;
1442         unsigned long flags;
1443         int rc;
1444         struct qeth_card *card;
1445
1446         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1447         card = CARD_FROM_CDEV(channel->ccwdev);
1448         iob = qeth_get_buffer(channel);
1449         iob->callback = idx_reply_cb;
1450         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1451         channel->ccw.count = QETH_BUFSIZE;
1452         channel->ccw.cda = (__u32) __pa(iob->data);
1453
1454         wait_event(card->wait_q,
1455                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1456         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1457         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1458         rc = ccw_device_start(channel->ccwdev,
1459                               &channel->ccw, (addr_t) iob, 0, 0);
1460         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1461
1462         if (rc) {
1463                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1464                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1465                 atomic_set(&channel->irq_pending, 0);
1466                 wake_up(&card->wait_q);
1467                 return rc;
1468         }
1469         rc = wait_event_interruptible_timeout(card->wait_q,
1470                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1471         if (rc == -ERESTARTSYS)
1472                 return rc;
1473         if (channel->state != CH_STATE_UP) {
1474                 rc = -ETIME;
1475                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1476                 qeth_clear_cmd_buffers(channel);
1477         } else
1478                 rc = 0;
1479         return rc;
1480 }
1481
1482 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1483                 void (*idx_reply_cb)(struct qeth_channel *,
1484                         struct qeth_cmd_buffer *))
1485 {
1486         struct qeth_card *card;
1487         struct qeth_cmd_buffer *iob;
1488         unsigned long flags;
1489         __u16 temp;
1490         __u8 tmp;
1491         int rc;
1492         struct ccw_dev_id temp_devid;
1493
1494         card = CARD_FROM_CDEV(channel->ccwdev);
1495
1496         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1497
1498         iob = qeth_get_buffer(channel);
1499         iob->callback = idx_reply_cb;
1500         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1501         channel->ccw.count = IDX_ACTIVATE_SIZE;
1502         channel->ccw.cda = (__u32) __pa(iob->data);
1503         if (channel == &card->write) {
1504                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1505                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1506                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1507                 card->seqno.trans_hdr++;
1508         } else {
1509                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1510                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1511                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1512         }
1513         tmp = ((__u8)card->info.portno) | 0x80;
1514         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1515         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1516                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1517         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1518                &card->info.func_level, sizeof(__u16));
1519         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1520         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1521         temp = (card->info.cula << 8) + card->info.unit_addr2;
1522         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1523
1524         wait_event(card->wait_q,
1525                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1526         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1527         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1528         rc = ccw_device_start(channel->ccwdev,
1529                               &channel->ccw, (addr_t) iob, 0, 0);
1530         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1531
1532         if (rc) {
1533                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1534                         rc);
1535                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1536                 atomic_set(&channel->irq_pending, 0);
1537                 wake_up(&card->wait_q);
1538                 return rc;
1539         }
1540         rc = wait_event_interruptible_timeout(card->wait_q,
1541                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1542         if (rc == -ERESTARTSYS)
1543                 return rc;
1544         if (channel->state != CH_STATE_ACTIVATING) {
1545                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1546                         " failed to recover an error on the device\n");
1547                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1548                         dev_name(&channel->ccwdev->dev));
1549                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1550                 qeth_clear_cmd_buffers(channel);
1551                 return -ETIME;
1552         }
1553         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1554 }
1555
1556 static int qeth_peer_func_level(int level)
1557 {
1558         if ((level & 0xff) == 8)
1559                 return (level & 0xff) + 0x400;
1560         if (((level >> 8) & 3) == 1)
1561                 return (level & 0xff) + 0x200;
1562         return level;
1563 }
1564
1565 static void qeth_idx_write_cb(struct qeth_channel *channel,
1566                 struct qeth_cmd_buffer *iob)
1567 {
1568         struct qeth_card *card;
1569         __u16 temp;
1570
1571         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1572
1573         if (channel->state == CH_STATE_DOWN) {
1574                 channel->state = CH_STATE_ACTIVATING;
1575                 goto out;
1576         }
1577         card = CARD_FROM_CDEV(channel->ccwdev);
1578
1579         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1580                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1581                         dev_err(&card->write.ccwdev->dev,
1582                                 "The adapter is used exclusively by another "
1583                                 "host\n");
1584                 else
1585                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1586                                 " negative reply\n",
1587                                 dev_name(&card->write.ccwdev->dev));
1588                 goto out;
1589         }
1590         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1591         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1592                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1593                         "function level mismatch (sent: 0x%x, received: "
1594                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1595                         card->info.func_level, temp);
1596                 goto out;
1597         }
1598         channel->state = CH_STATE_UP;
1599 out:
1600         qeth_release_buffer(channel, iob);
1601 }
1602
1603 static void qeth_idx_read_cb(struct qeth_channel *channel,
1604                 struct qeth_cmd_buffer *iob)
1605 {
1606         struct qeth_card *card;
1607         __u16 temp;
1608
1609         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1610         if (channel->state == CH_STATE_DOWN) {
1611                 channel->state = CH_STATE_ACTIVATING;
1612                 goto out;
1613         }
1614
1615         card = CARD_FROM_CDEV(channel->ccwdev);
1616         if (qeth_check_idx_response(iob->data))
1617                         goto out;
1618
1619         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1620                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1621                         dev_err(&card->write.ccwdev->dev,
1622                                 "The adapter is used exclusively by another "
1623                                 "host\n");
1624                 else
1625                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1626                                 " negative reply\n",
1627                                 dev_name(&card->read.ccwdev->dev));
1628                 goto out;
1629         }
1630
1631 /**
1632  * temporary fix for microcode bug
1633  * to revert it,replace OR by AND
1634  */
1635         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1636              (card->info.type == QETH_CARD_TYPE_OSAE))
1637                 card->info.portname_required = 1;
1638
1639         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1640         if (temp != qeth_peer_func_level(card->info.func_level)) {
1641                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1642                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1643                         dev_name(&card->read.ccwdev->dev),
1644                         card->info.func_level, temp);
1645                 goto out;
1646         }
1647         memcpy(&card->token.issuer_rm_r,
1648                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1649                QETH_MPC_TOKEN_LENGTH);
1650         memcpy(&card->info.mcl_level[0],
1651                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1652         channel->state = CH_STATE_UP;
1653 out:
1654         qeth_release_buffer(channel, iob);
1655 }
1656
1657 void qeth_prepare_control_data(struct qeth_card *card, int len,
1658                 struct qeth_cmd_buffer *iob)
1659 {
1660         qeth_setup_ccw(&card->write, iob->data, len);
1661         iob->callback = qeth_release_buffer;
1662
1663         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1664                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1665         card->seqno.trans_hdr++;
1666         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1667                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1668         card->seqno.pdu_hdr++;
1669         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1670                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1671         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1672 }
1673 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1674
1675 int qeth_send_control_data(struct qeth_card *card, int len,
1676                 struct qeth_cmd_buffer *iob,
1677                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1678                         unsigned long),
1679                 void *reply_param)
1680 {
1681         int rc;
1682         unsigned long flags;
1683         struct qeth_reply *reply = NULL;
1684         unsigned long timeout;
1685
1686         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1687
1688         reply = qeth_alloc_reply(card);
1689         if (!reply) {
1690                 return -ENOMEM;
1691         }
1692         reply->callback = reply_cb;
1693         reply->param = reply_param;
1694         if (card->state == CARD_STATE_DOWN)
1695                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1696         else
1697                 reply->seqno = card->seqno.ipa++;
1698         init_waitqueue_head(&reply->wait_q);
1699         spin_lock_irqsave(&card->lock, flags);
1700         list_add_tail(&reply->list, &card->cmd_waiter_list);
1701         spin_unlock_irqrestore(&card->lock, flags);
1702         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1703
1704         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1705         qeth_prepare_control_data(card, len, iob);
1706
1707         if (IS_IPA(iob->data))
1708                 timeout = jiffies + QETH_IPA_TIMEOUT;
1709         else
1710                 timeout = jiffies + QETH_TIMEOUT;
1711
1712         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1713         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1714         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1715                               (addr_t) iob, 0, 0);
1716         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1717         if (rc) {
1718                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1719                         "ccw_device_start rc = %i\n",
1720                         dev_name(&card->write.ccwdev->dev), rc);
1721                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1722                 spin_lock_irqsave(&card->lock, flags);
1723                 list_del_init(&reply->list);
1724                 qeth_put_reply(reply);
1725                 spin_unlock_irqrestore(&card->lock, flags);
1726                 qeth_release_buffer(iob->channel, iob);
1727                 atomic_set(&card->write.irq_pending, 0);
1728                 wake_up(&card->wait_q);
1729                 return rc;
1730         }
1731         while (!atomic_read(&reply->received)) {
1732                 if (time_after(jiffies, timeout)) {
1733                         spin_lock_irqsave(&reply->card->lock, flags);
1734                         list_del_init(&reply->list);
1735                         spin_unlock_irqrestore(&reply->card->lock, flags);
1736                         reply->rc = -ETIME;
1737                         atomic_inc(&reply->received);
1738                         wake_up(&reply->wait_q);
1739                 }
1740                 cpu_relax();
1741         };
1742         rc = reply->rc;
1743         qeth_put_reply(reply);
1744         return rc;
1745 }
1746 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1747
1748 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1749                 unsigned long data)
1750 {
1751         struct qeth_cmd_buffer *iob;
1752
1753         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1754
1755         iob = (struct qeth_cmd_buffer *) data;
1756         memcpy(&card->token.cm_filter_r,
1757                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1758                QETH_MPC_TOKEN_LENGTH);
1759         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1760         return 0;
1761 }
1762
1763 static int qeth_cm_enable(struct qeth_card *card)
1764 {
1765         int rc;
1766         struct qeth_cmd_buffer *iob;
1767
1768         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1769
1770         iob = qeth_wait_for_buffer(&card->write);
1771         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1772         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1773                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1774         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1775                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1776
1777         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1778                                     qeth_cm_enable_cb, NULL);
1779         return rc;
1780 }
1781
1782 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1783                 unsigned long data)
1784 {
1785
1786         struct qeth_cmd_buffer *iob;
1787
1788         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1789
1790         iob = (struct qeth_cmd_buffer *) data;
1791         memcpy(&card->token.cm_connection_r,
1792                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1793                QETH_MPC_TOKEN_LENGTH);
1794         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1795         return 0;
1796 }
1797
1798 static int qeth_cm_setup(struct qeth_card *card)
1799 {
1800         int rc;
1801         struct qeth_cmd_buffer *iob;
1802
1803         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1804
1805         iob = qeth_wait_for_buffer(&card->write);
1806         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1807         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1808                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1809         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1810                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1811         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1812                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1813         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1814                                     qeth_cm_setup_cb, NULL);
1815         return rc;
1816
1817 }
1818
1819 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1820 {
1821         switch (card->info.type) {
1822         case QETH_CARD_TYPE_UNKNOWN:
1823                 return 1500;
1824         case QETH_CARD_TYPE_IQD:
1825                 return card->info.max_mtu;
1826         case QETH_CARD_TYPE_OSAE:
1827                 switch (card->info.link_type) {
1828                 case QETH_LINK_TYPE_HSTR:
1829                 case QETH_LINK_TYPE_LANE_TR:
1830                         return 2000;
1831                 default:
1832                         return 1492;
1833                 }
1834         default:
1835                 return 1500;
1836         }
1837 }
1838
1839 static inline int qeth_get_max_mtu_for_card(int cardtype)
1840 {
1841         switch (cardtype) {
1842
1843         case QETH_CARD_TYPE_UNKNOWN:
1844         case QETH_CARD_TYPE_OSAE:
1845         case QETH_CARD_TYPE_OSN:
1846                 return 61440;
1847         case QETH_CARD_TYPE_IQD:
1848                 return 57344;
1849         default:
1850                 return 1500;
1851         }
1852 }
1853
1854 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1855 {
1856         switch (cardtype) {
1857         case QETH_CARD_TYPE_IQD:
1858                 return 1;
1859         default:
1860                 return 0;
1861         }
1862 }
1863
1864 static inline int qeth_get_mtu_outof_framesize(int framesize)
1865 {
1866         switch (framesize) {
1867         case 0x4000:
1868                 return 8192;
1869         case 0x6000:
1870                 return 16384;
1871         case 0xa000:
1872                 return 32768;
1873         case 0xffff:
1874                 return 57344;
1875         default:
1876                 return 0;
1877         }
1878 }
1879
1880 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1881 {
1882         switch (card->info.type) {
1883         case QETH_CARD_TYPE_OSAE:
1884                 return ((mtu >= 576) && (mtu <= 61440));
1885         case QETH_CARD_TYPE_IQD:
1886                 return ((mtu >= 576) &&
1887                         (mtu <= card->info.max_mtu + 4096 - 32));
1888         case QETH_CARD_TYPE_OSN:
1889         case QETH_CARD_TYPE_UNKNOWN:
1890         default:
1891                 return 1;
1892         }
1893 }
1894
1895 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1896                 unsigned long data)
1897 {
1898
1899         __u16 mtu, framesize;
1900         __u16 len;
1901         __u8 link_type;
1902         struct qeth_cmd_buffer *iob;
1903
1904         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1905
1906         iob = (struct qeth_cmd_buffer *) data;
1907         memcpy(&card->token.ulp_filter_r,
1908                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1909                QETH_MPC_TOKEN_LENGTH);
1910         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1911                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1912                 mtu = qeth_get_mtu_outof_framesize(framesize);
1913                 if (!mtu) {
1914                         iob->rc = -EINVAL;
1915                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1916                         return 0;
1917                 }
1918                 card->info.max_mtu = mtu;
1919                 card->info.initial_mtu = mtu;
1920                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1921         } else {
1922                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1923                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1924                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1925         }
1926
1927         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1928         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1929                 memcpy(&link_type,
1930                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1931                 card->info.link_type = link_type;
1932         } else
1933                 card->info.link_type = 0;
1934         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1935         return 0;
1936 }
1937
1938 static int qeth_ulp_enable(struct qeth_card *card)
1939 {
1940         int rc;
1941         char prot_type;
1942         struct qeth_cmd_buffer *iob;
1943
1944         /*FIXME: trace view callbacks*/
1945         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1946
1947         iob = qeth_wait_for_buffer(&card->write);
1948         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1949
1950         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1951                 (__u8) card->info.portno;
1952         if (card->options.layer2)
1953                 if (card->info.type == QETH_CARD_TYPE_OSN)
1954                         prot_type = QETH_PROT_OSN2;
1955                 else
1956                         prot_type = QETH_PROT_LAYER2;
1957         else
1958                 prot_type = QETH_PROT_TCPIP;
1959
1960         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1961         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1962                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1963         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1964                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1965         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1966                card->info.portname, 9);
1967         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1968                                     qeth_ulp_enable_cb, NULL);
1969         return rc;
1970
1971 }
1972
1973 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1974                 unsigned long data)
1975 {
1976         struct qeth_cmd_buffer *iob;
1977
1978         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1979
1980         iob = (struct qeth_cmd_buffer *) data;
1981         memcpy(&card->token.ulp_connection_r,
1982                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1983                QETH_MPC_TOKEN_LENGTH);
1984         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1985         return 0;
1986 }
1987
1988 static int qeth_ulp_setup(struct qeth_card *card)
1989 {
1990         int rc;
1991         __u16 temp;
1992         struct qeth_cmd_buffer *iob;
1993         struct ccw_dev_id dev_id;
1994
1995         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
1996
1997         iob = qeth_wait_for_buffer(&card->write);
1998         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
1999
2000         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2001                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2002         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2003                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2004         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2005                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2006
2007         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2008         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2009         temp = (card->info.cula << 8) + card->info.unit_addr2;
2010         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2011         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2012                                     qeth_ulp_setup_cb, NULL);
2013         return rc;
2014 }
2015
2016 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2017 {
2018         int i, j;
2019
2020         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2021
2022         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2023                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2024                 return 0;
2025
2026         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2027                                   GFP_KERNEL);
2028         if (!card->qdio.in_q)
2029                 goto out_nomem;
2030         QETH_DBF_TEXT(SETUP, 2, "inq");
2031         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2032         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2033         /* give inbound qeth_qdio_buffers their qdio_buffers */
2034         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2035                 card->qdio.in_q->bufs[i].buffer =
2036                         &card->qdio.in_q->qdio_bufs[i];
2037         /* inbound buffer pool */
2038         if (qeth_alloc_buffer_pool(card))
2039                 goto out_freeinq;
2040         /* outbound */
2041         card->qdio.out_qs =
2042                 kmalloc(card->qdio.no_out_queues *
2043                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2044         if (!card->qdio.out_qs)
2045                 goto out_freepool;
2046         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2047                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2048                                                GFP_KERNEL);
2049                 if (!card->qdio.out_qs[i])
2050                         goto out_freeoutq;
2051                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2052                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2053                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2054                 card->qdio.out_qs[i]->queue_no = i;
2055                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2056                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2057                         card->qdio.out_qs[i]->bufs[j].buffer =
2058                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2059                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2060                                             skb_list);
2061                         lockdep_set_class(
2062                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2063                                 &qdio_out_skb_queue_key);
2064                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2065                 }
2066         }
2067         return 0;
2068
2069 out_freeoutq:
2070         while (i > 0)
2071                 kfree(card->qdio.out_qs[--i]);
2072         kfree(card->qdio.out_qs);
2073         card->qdio.out_qs = NULL;
2074 out_freepool:
2075         qeth_free_buffer_pool(card);
2076 out_freeinq:
2077         kfree(card->qdio.in_q);
2078         card->qdio.in_q = NULL;
2079 out_nomem:
2080         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2081         return -ENOMEM;
2082 }
2083
2084 static void qeth_create_qib_param_field(struct qeth_card *card,
2085                 char *param_field)
2086 {
2087
2088         param_field[0] = _ascebc['P'];
2089         param_field[1] = _ascebc['C'];
2090         param_field[2] = _ascebc['I'];
2091         param_field[3] = _ascebc['T'];
2092         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2093         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2094         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2095 }
2096
2097 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2098                 char *param_field)
2099 {
2100         param_field[16] = _ascebc['B'];
2101         param_field[17] = _ascebc['L'];
2102         param_field[18] = _ascebc['K'];
2103         param_field[19] = _ascebc['T'];
2104         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2105         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2106         *((unsigned int *) (&param_field[28])) =
2107                 card->info.blkt.inter_packet_jumbo;
2108 }
2109
2110 static int qeth_qdio_activate(struct qeth_card *card)
2111 {
2112         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2113         return qdio_activate(CARD_DDEV(card));
2114 }
2115
2116 static int qeth_dm_act(struct qeth_card *card)
2117 {
2118         int rc;
2119         struct qeth_cmd_buffer *iob;
2120
2121         QETH_DBF_TEXT(SETUP, 2, "dmact");
2122
2123         iob = qeth_wait_for_buffer(&card->write);
2124         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2125
2126         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2127                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2128         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2129                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2130         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2131         return rc;
2132 }
2133
2134 static int qeth_mpc_initialize(struct qeth_card *card)
2135 {
2136         int rc;
2137
2138         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2139
2140         rc = qeth_issue_next_read(card);
2141         if (rc) {
2142                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2143                 return rc;
2144         }
2145         rc = qeth_cm_enable(card);
2146         if (rc) {
2147                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2148                 goto out_qdio;
2149         }
2150         rc = qeth_cm_setup(card);
2151         if (rc) {
2152                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2153                 goto out_qdio;
2154         }
2155         rc = qeth_ulp_enable(card);
2156         if (rc) {
2157                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2158                 goto out_qdio;
2159         }
2160         rc = qeth_ulp_setup(card);
2161         if (rc) {
2162                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2163                 goto out_qdio;
2164         }
2165         rc = qeth_alloc_qdio_buffers(card);
2166         if (rc) {
2167                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2168                 goto out_qdio;
2169         }
2170         rc = qeth_qdio_establish(card);
2171         if (rc) {
2172                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2173                 qeth_free_qdio_buffers(card);
2174                 goto out_qdio;
2175         }
2176         rc = qeth_qdio_activate(card);
2177         if (rc) {
2178                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2179                 goto out_qdio;
2180         }
2181         rc = qeth_dm_act(card);
2182         if (rc) {
2183                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2184                 goto out_qdio;
2185         }
2186
2187         return 0;
2188 out_qdio:
2189         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2190         return rc;
2191 }
2192
2193 static void qeth_print_status_with_portname(struct qeth_card *card)
2194 {
2195         char dbf_text[15];
2196         int i;
2197
2198         sprintf(dbf_text, "%s", card->info.portname + 1);
2199         for (i = 0; i < 8; i++)
2200                 dbf_text[i] =
2201                         (char) _ebcasc[(__u8) dbf_text[i]];
2202         dbf_text[8] = 0;
2203         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2204                "with link type %s (portname: %s)\n",
2205                qeth_get_cardname(card),
2206                (card->info.mcl_level[0]) ? " (level: " : "",
2207                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2208                (card->info.mcl_level[0]) ? ")" : "",
2209                qeth_get_cardname_short(card),
2210                dbf_text);
2211
2212 }
2213
2214 static void qeth_print_status_no_portname(struct qeth_card *card)
2215 {
2216         if (card->info.portname[0])
2217                 dev_info(&card->gdev->dev, "Device is a%s "
2218                        "card%s%s%s\nwith link type %s "
2219                        "(no portname needed by interface).\n",
2220                        qeth_get_cardname(card),
2221                        (card->info.mcl_level[0]) ? " (level: " : "",
2222                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2223                        (card->info.mcl_level[0]) ? ")" : "",
2224                        qeth_get_cardname_short(card));
2225         else
2226                 dev_info(&card->gdev->dev, "Device is a%s "
2227                        "card%s%s%s\nwith link type %s.\n",
2228                        qeth_get_cardname(card),
2229                        (card->info.mcl_level[0]) ? " (level: " : "",
2230                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2231                        (card->info.mcl_level[0]) ? ")" : "",
2232                        qeth_get_cardname_short(card));
2233 }
2234
2235 void qeth_print_status_message(struct qeth_card *card)
2236 {
2237         switch (card->info.type) {
2238         case QETH_CARD_TYPE_OSAE:
2239                 /* VM will use a non-zero first character
2240                  * to indicate a HiperSockets like reporting
2241                  * of the level OSA sets the first character to zero
2242                  * */
2243                 if (!card->info.mcl_level[0]) {
2244                         sprintf(card->info.mcl_level, "%02x%02x",
2245                                 card->info.mcl_level[2],
2246                                 card->info.mcl_level[3]);
2247
2248                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2249                         break;
2250                 }
2251                 /* fallthrough */
2252         case QETH_CARD_TYPE_IQD:
2253                 if (card->info.guestlan) {
2254                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2255                                 card->info.mcl_level[0]];
2256                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2257                                 card->info.mcl_level[1]];
2258                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2259                                 card->info.mcl_level[2]];
2260                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2261                                 card->info.mcl_level[3]];
2262                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2263                 }
2264                 break;
2265         default:
2266                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2267         }
2268         if (card->info.portname_required)
2269                 qeth_print_status_with_portname(card);
2270         else
2271                 qeth_print_status_no_portname(card);
2272 }
2273 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2274
2275 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2276 {
2277         struct qeth_buffer_pool_entry *entry;
2278
2279         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2280
2281         list_for_each_entry(entry,
2282                             &card->qdio.init_pool.entry_list, init_list) {
2283                 qeth_put_buffer_pool_entry(card, entry);
2284         }
2285 }
2286
2287 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2288                 struct qeth_card *card)
2289 {
2290         struct list_head *plh;
2291         struct qeth_buffer_pool_entry *entry;
2292         int i, free;
2293         struct page *page;
2294
2295         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2296                 return NULL;
2297
2298         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2299                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2300                 free = 1;
2301                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2302                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2303                                 free = 0;
2304                                 break;
2305                         }
2306                 }
2307                 if (free) {
2308                         list_del_init(&entry->list);
2309                         return entry;
2310                 }
2311         }
2312
2313         /* no free buffer in pool so take first one and swap pages */
2314         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2315                         struct qeth_buffer_pool_entry, list);
2316         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2317                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2318                         page = alloc_page(GFP_ATOMIC);
2319                         if (!page) {
2320                                 return NULL;
2321                         } else {
2322                                 free_page((unsigned long)entry->elements[i]);
2323                                 entry->elements[i] = page_address(page);
2324                                 if (card->options.performance_stats)
2325                                         card->perf_stats.sg_alloc_page_rx++;
2326                         }
2327                 }
2328         }
2329         list_del_init(&entry->list);
2330         return entry;
2331 }
2332
2333 static int qeth_init_input_buffer(struct qeth_card *card,
2334                 struct qeth_qdio_buffer *buf)
2335 {
2336         struct qeth_buffer_pool_entry *pool_entry;
2337         int i;
2338
2339         pool_entry = qeth_find_free_buffer_pool_entry(card);
2340         if (!pool_entry)
2341                 return 1;
2342
2343         /*
2344          * since the buffer is accessed only from the input_tasklet
2345          * there shouldn't be a need to synchronize; also, since we use
2346          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2347          * buffers
2348          */
2349
2350         buf->pool_entry = pool_entry;
2351         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2352                 buf->buffer->element[i].length = PAGE_SIZE;
2353                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2354                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2355                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2356                 else
2357                         buf->buffer->element[i].flags = 0;
2358         }
2359         return 0;
2360 }
2361
2362 int qeth_init_qdio_queues(struct qeth_card *card)
2363 {
2364         int i, j;
2365         int rc;
2366
2367         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2368
2369         /* inbound queue */
2370         memset(card->qdio.in_q->qdio_bufs, 0,
2371                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2372         qeth_initialize_working_pool_list(card);
2373         /*give only as many buffers to hardware as we have buffer pool entries*/
2374         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2375                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2376         card->qdio.in_q->next_buf_to_init =
2377                 card->qdio.in_buf_pool.buf_count - 1;
2378         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2379                      card->qdio.in_buf_pool.buf_count - 1);
2380         if (rc) {
2381                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2382                 return rc;
2383         }
2384         /* outbound queue */
2385         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2386                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2387                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2388                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2389                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2390                                         &card->qdio.out_qs[i]->bufs[j]);
2391                 }
2392                 card->qdio.out_qs[i]->card = card;
2393                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2394                 card->qdio.out_qs[i]->do_pack = 0;
2395                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2396                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2397                 atomic_set(&card->qdio.out_qs[i]->state,
2398                            QETH_OUT_Q_UNLOCKED);
2399         }
2400         return 0;
2401 }
2402 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2403
2404 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2405 {
2406         switch (link_type) {
2407         case QETH_LINK_TYPE_HSTR:
2408                 return 2;
2409         default:
2410                 return 1;
2411         }
2412 }
2413
2414 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2415                 struct qeth_ipa_cmd *cmd, __u8 command,
2416                 enum qeth_prot_versions prot)
2417 {
2418         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2419         cmd->hdr.command = command;
2420         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2421         cmd->hdr.seqno = card->seqno.ipa;
2422         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2423         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2424         if (card->options.layer2)
2425                 cmd->hdr.prim_version_no = 2;
2426         else
2427                 cmd->hdr.prim_version_no = 1;
2428         cmd->hdr.param_count = 1;
2429         cmd->hdr.prot_version = prot;
2430         cmd->hdr.ipa_supported = 0;
2431         cmd->hdr.ipa_enabled = 0;
2432 }
2433
2434 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2435                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2436 {
2437         struct qeth_cmd_buffer *iob;
2438         struct qeth_ipa_cmd *cmd;
2439
2440         iob = qeth_wait_for_buffer(&card->write);
2441         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2442         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2443
2444         return iob;
2445 }
2446 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2447
2448 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2449                 char prot_type)
2450 {
2451         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2452         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2453         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2454                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2455 }
2456 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2457
2458 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2459                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2460                         unsigned long),
2461                 void *reply_param)
2462 {
2463         int rc;
2464         char prot_type;
2465
2466         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2467
2468         if (card->options.layer2)
2469                 if (card->info.type == QETH_CARD_TYPE_OSN)
2470                         prot_type = QETH_PROT_OSN2;
2471                 else
2472                         prot_type = QETH_PROT_LAYER2;
2473         else
2474                 prot_type = QETH_PROT_TCPIP;
2475         qeth_prepare_ipa_cmd(card, iob, prot_type);
2476         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2477                                                 iob, reply_cb, reply_param);
2478         return rc;
2479 }
2480 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2481
2482 static int qeth_send_startstoplan(struct qeth_card *card,
2483                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2484 {
2485         int rc;
2486         struct qeth_cmd_buffer *iob;
2487
2488         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2489         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2490
2491         return rc;
2492 }
2493
2494 int qeth_send_startlan(struct qeth_card *card)
2495 {
2496         int rc;
2497
2498         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2499
2500         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2501         return rc;
2502 }
2503 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2504
2505 int qeth_send_stoplan(struct qeth_card *card)
2506 {
2507         int rc = 0;
2508
2509         /*
2510          * TODO: according to the IPA format document page 14,
2511          * TCP/IP (we!) never issue a STOPLAN
2512          * is this right ?!?
2513          */
2514         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2515
2516         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2517         return rc;
2518 }
2519 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2520
2521 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2522                 struct qeth_reply *reply, unsigned long data)
2523 {
2524         struct qeth_ipa_cmd *cmd;
2525
2526         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2527
2528         cmd = (struct qeth_ipa_cmd *) data;
2529         if (cmd->hdr.return_code == 0)
2530                 cmd->hdr.return_code =
2531                         cmd->data.setadapterparms.hdr.return_code;
2532         return 0;
2533 }
2534 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2535
2536 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2537                 struct qeth_reply *reply, unsigned long data)
2538 {
2539         struct qeth_ipa_cmd *cmd;
2540
2541         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2542
2543         cmd = (struct qeth_ipa_cmd *) data;
2544         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2545                 card->info.link_type =
2546                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2547         card->options.adp.supported_funcs =
2548                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2549         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2550 }
2551
2552 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2553                 __u32 command, __u32 cmdlen)
2554 {
2555         struct qeth_cmd_buffer *iob;
2556         struct qeth_ipa_cmd *cmd;
2557
2558         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2559                                      QETH_PROT_IPV4);
2560         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2561         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2562         cmd->data.setadapterparms.hdr.command_code = command;
2563         cmd->data.setadapterparms.hdr.used_total = 1;
2564         cmd->data.setadapterparms.hdr.seq_no = 1;
2565
2566         return iob;
2567 }
2568 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2569
2570 int qeth_query_setadapterparms(struct qeth_card *card)
2571 {
2572         int rc;
2573         struct qeth_cmd_buffer *iob;
2574
2575         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2576         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2577                                    sizeof(struct qeth_ipacmd_setadpparms));
2578         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2579         return rc;
2580 }
2581 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2582
2583 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2584                 const char *dbftext)
2585 {
2586         if (qdio_error) {
2587                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2588                 QETH_DBF_TEXT(QERR, 2, dbftext);
2589                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2590                                buf->element[15].flags & 0xff);
2591                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2592                                buf->element[14].flags & 0xff);
2593                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2594                 return 1;
2595         }
2596         return 0;
2597 }
2598 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2599
2600 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2601 {
2602         struct qeth_qdio_q *queue = card->qdio.in_q;
2603         int count;
2604         int i;
2605         int rc;
2606         int newcount = 0;
2607
2608         count = (index < queue->next_buf_to_init)?
2609                 card->qdio.in_buf_pool.buf_count -
2610                 (queue->next_buf_to_init - index) :
2611                 card->qdio.in_buf_pool.buf_count -
2612                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2613         /* only requeue at a certain threshold to avoid SIGAs */
2614         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2615                 for (i = queue->next_buf_to_init;
2616                      i < queue->next_buf_to_init + count; ++i) {
2617                         if (qeth_init_input_buffer(card,
2618                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2619                                 break;
2620                         } else {
2621                                 newcount++;
2622                         }
2623                 }
2624
2625                 if (newcount < count) {
2626                         /* we are in memory shortage so we switch back to
2627                            traditional skb allocation and drop packages */
2628                         atomic_set(&card->force_alloc_skb, 3);
2629                         count = newcount;
2630                 } else {
2631                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2632                 }
2633
2634                 /*
2635                  * according to old code it should be avoided to requeue all
2636                  * 128 buffers in order to benefit from PCI avoidance.
2637                  * this function keeps at least one buffer (the buffer at
2638                  * 'index') un-requeued -> this buffer is the first buffer that
2639                  * will be requeued the next time
2640                  */
2641                 if (card->options.performance_stats) {
2642                         card->perf_stats.inbound_do_qdio_cnt++;
2643                         card->perf_stats.inbound_do_qdio_start_time =
2644                                 qeth_get_micros();
2645                 }
2646                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2647                              queue->next_buf_to_init, count);
2648                 if (card->options.performance_stats)
2649                         card->perf_stats.inbound_do_qdio_time +=
2650                                 qeth_get_micros() -
2651                                 card->perf_stats.inbound_do_qdio_start_time;
2652                 if (rc) {
2653                         dev_warn(&card->gdev->dev,
2654                                 "QDIO reported an error, rc=%i\n", rc);
2655                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2656                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2657                 }
2658                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2659                                           QDIO_MAX_BUFFERS_PER_Q;
2660         }
2661 }
2662 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2663
2664 static int qeth_handle_send_error(struct qeth_card *card,
2665                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2666 {
2667         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2668         int cc = qdio_err & 3;
2669
2670         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2671         qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");
2672         switch (cc) {
2673         case 0:
2674                 if (qdio_err) {
2675                         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2676                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2677                         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2678                                        (u16)qdio_err, (u8)sbalf15);
2679                         return QETH_SEND_ERROR_LINK_FAILURE;
2680                 }
2681                 return QETH_SEND_ERROR_NONE;
2682         case 2:
2683                 if (qdio_err & QDIO_ERROR_SIGA_BUSY) {
2684                         QETH_DBF_TEXT(TRACE, 1, "SIGAcc2B");
2685                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2686                         return QETH_SEND_ERROR_KICK_IT;
2687                 }
2688                 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2689                         return QETH_SEND_ERROR_RETRY;
2690                 return QETH_SEND_ERROR_LINK_FAILURE;
2691                 /* look at qdio_error and sbalf 15 */
2692         case 1:
2693                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc1");
2694                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2695                 return QETH_SEND_ERROR_LINK_FAILURE;
2696         case 3:
2697         default:
2698                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc3");
2699                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2700                 return QETH_SEND_ERROR_KICK_IT;
2701         }
2702 }
2703
2704 /*
2705  * Switched to packing state if the number of used buffers on a queue
2706  * reaches a certain limit.
2707  */
2708 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2709 {
2710         if (!queue->do_pack) {
2711                 if (atomic_read(&queue->used_buffers)
2712                     >= QETH_HIGH_WATERMARK_PACK){
2713                         /* switch non-PACKING -> PACKING */
2714                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2715                         if (queue->card->options.performance_stats)
2716                                 queue->card->perf_stats.sc_dp_p++;
2717                         queue->do_pack = 1;
2718                 }
2719         }
2720 }
2721
2722 /*
2723  * Switches from packing to non-packing mode. If there is a packing
2724  * buffer on the queue this buffer will be prepared to be flushed.
2725  * In that case 1 is returned to inform the caller. If no buffer
2726  * has to be flushed, zero is returned.
2727  */
2728 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2729 {
2730         struct qeth_qdio_out_buffer *buffer;
2731         int flush_count = 0;
2732
2733         if (queue->do_pack) {
2734                 if (atomic_read(&queue->used_buffers)
2735                     <= QETH_LOW_WATERMARK_PACK) {
2736                         /* switch PACKING -> non-PACKING */
2737                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2738                         if (queue->card->options.performance_stats)
2739                                 queue->card->perf_stats.sc_p_dp++;
2740                         queue->do_pack = 0;
2741                         /* flush packing buffers */
2742                         buffer = &queue->bufs[queue->next_buf_to_fill];
2743                         if ((atomic_read(&buffer->state) ==
2744                                                 QETH_QDIO_BUF_EMPTY) &&
2745                             (buffer->next_element_to_fill > 0)) {
2746                                 atomic_set(&buffer->state,
2747                                                 QETH_QDIO_BUF_PRIMED);
2748                                 flush_count++;
2749                                 queue->next_buf_to_fill =
2750                                         (queue->next_buf_to_fill + 1) %
2751                                         QDIO_MAX_BUFFERS_PER_Q;
2752                         }
2753                 }
2754         }
2755         return flush_count;
2756 }
2757
2758 /*
2759  * Called to flush a packing buffer if no more pci flags are on the queue.
2760  * Checks if there is a packing buffer and prepares it to be flushed.
2761  * In that case returns 1, otherwise zero.
2762  */
2763 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2764 {
2765         struct qeth_qdio_out_buffer *buffer;
2766
2767         buffer = &queue->bufs[queue->next_buf_to_fill];
2768         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2769            (buffer->next_element_to_fill > 0)) {
2770                 /* it's a packing buffer */
2771                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2772                 queue->next_buf_to_fill =
2773                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2774                 return 1;
2775         }
2776         return 0;
2777 }
2778
2779 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2780                                int count)
2781 {
2782         struct qeth_qdio_out_buffer *buf;
2783         int rc;
2784         int i;
2785         unsigned int qdio_flags;
2786
2787         for (i = index; i < index + count; ++i) {
2788                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2789                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2790                                 SBAL_FLAGS_LAST_ENTRY;
2791
2792                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2793                         continue;
2794
2795                 if (!queue->do_pack) {
2796                         if ((atomic_read(&queue->used_buffers) >=
2797                                 (QETH_HIGH_WATERMARK_PACK -
2798                                  QETH_WATERMARK_PACK_FUZZ)) &&
2799                             !atomic_read(&queue->set_pci_flags_count)) {
2800                                 /* it's likely that we'll go to packing
2801                                  * mode soon */
2802                                 atomic_inc(&queue->set_pci_flags_count);
2803                                 buf->buffer->element[0].flags |= 0x40;
2804                         }
2805                 } else {
2806                         if (!atomic_read(&queue->set_pci_flags_count)) {
2807                                 /*
2808                                  * there's no outstanding PCI any more, so we
2809                                  * have to request a PCI to be sure the the PCI
2810                                  * will wake at some time in the future then we
2811                                  * can flush packed buffers that might still be
2812                                  * hanging around, which can happen if no
2813                                  * further send was requested by the stack
2814                                  */
2815                                 atomic_inc(&queue->set_pci_flags_count);
2816                                 buf->buffer->element[0].flags |= 0x40;
2817                         }
2818                 }
2819         }
2820
2821         queue->card->dev->trans_start = jiffies;
2822         if (queue->card->options.performance_stats) {
2823                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2824                 queue->card->perf_stats.outbound_do_qdio_start_time =
2825                         qeth_get_micros();
2826         }
2827         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2828         if (atomic_read(&queue->set_pci_flags_count))
2829                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2830         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2831                      queue->queue_no, index, count);
2832         if (queue->card->options.performance_stats)
2833                 queue->card->perf_stats.outbound_do_qdio_time +=
2834                         qeth_get_micros() -
2835                         queue->card->perf_stats.outbound_do_qdio_start_time;
2836         if (rc) {
2837                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2838                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2839                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2840                 queue->card->stats.tx_errors += count;
2841                 /* this must not happen under normal circumstances. if it
2842                  * happens something is really wrong -> recover */
2843                 qeth_schedule_recovery(queue->card);
2844                 return;
2845         }
2846         atomic_add(count, &queue->used_buffers);
2847         if (queue->card->options.performance_stats)
2848                 queue->card->perf_stats.bufs_sent += count;
2849 }
2850
2851 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2852 {
2853         int index;
2854         int flush_cnt = 0;
2855         int q_was_packing = 0;
2856
2857         /*
2858          * check if weed have to switch to non-packing mode or if
2859          * we have to get a pci flag out on the queue
2860          */
2861         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2862             !atomic_read(&queue->set_pci_flags_count)) {
2863                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2864                                 QETH_OUT_Q_UNLOCKED) {
2865                         /*
2866                          * If we get in here, there was no action in
2867                          * do_send_packet. So, we check if there is a
2868                          * packing buffer to be flushed here.
2869                          */
2870                         netif_stop_queue(queue->card->dev);
2871                         index = queue->next_buf_to_fill;
2872                         q_was_packing = queue->do_pack;
2873                         /* queue->do_pack may change */
2874                         barrier();
2875                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2876                         if (!flush_cnt &&
2877                             !atomic_read(&queue->set_pci_flags_count))
2878                                 flush_cnt +=
2879                                         qeth_flush_buffers_on_no_pci(queue);
2880                         if (queue->card->options.performance_stats &&
2881                             q_was_packing)
2882                                 queue->card->perf_stats.bufs_sent_pack +=
2883                                         flush_cnt;
2884                         if (flush_cnt)
2885                                 qeth_flush_buffers(queue, index, flush_cnt);
2886                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2887                 }
2888         }
2889 }
2890
2891 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2892                 unsigned int qdio_error, int __queue, int first_element,
2893                 int count, unsigned long card_ptr)
2894 {
2895         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2896         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2897         struct qeth_qdio_out_buffer *buffer;
2898         int i;
2899
2900         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2901         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2902                 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2903                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2904                 netif_stop_queue(card->dev);
2905                 qeth_schedule_recovery(card);
2906                 return;
2907         }
2908         if (card->options.performance_stats) {
2909                 card->perf_stats.outbound_handler_cnt++;
2910                 card->perf_stats.outbound_handler_start_time =
2911                         qeth_get_micros();
2912         }
2913         for (i = first_element; i < (first_element + count); ++i) {
2914                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2915                 /*we only handle the KICK_IT error by doing a recovery */
2916                 if (qeth_handle_send_error(card, buffer, qdio_error)
2917                                 == QETH_SEND_ERROR_KICK_IT){
2918                         netif_stop_queue(card->dev);
2919                         qeth_schedule_recovery(card);
2920                         return;
2921                 }
2922                 qeth_clear_output_buffer(queue, buffer);
2923         }
2924         atomic_sub(count, &queue->used_buffers);
2925         /* check if we need to do something on this outbound queue */
2926         if (card->info.type != QETH_CARD_TYPE_IQD)
2927                 qeth_check_outbound_queue(queue);
2928
2929         netif_wake_queue(queue->card->dev);
2930         if (card->options.performance_stats)
2931                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2932                         card->perf_stats.outbound_handler_start_time;
2933 }
2934 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2935
2936 int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2937 {
2938         int cast_type = RTN_UNSPEC;
2939
2940         if (card->info.type == QETH_CARD_TYPE_OSN)
2941                 return cast_type;
2942
2943         if (skb->dst && skb->dst->neighbour) {
2944                 cast_type = skb->dst->neighbour->type;
2945                 if ((cast_type == RTN_BROADCAST) ||
2946                     (cast_type == RTN_MULTICAST) ||
2947                     (cast_type == RTN_ANYCAST))
2948                         return cast_type;
2949                 else
2950                         return RTN_UNSPEC;
2951         }
2952         /* try something else */
2953         if (skb->protocol == ETH_P_IPV6)
2954                 return (skb_network_header(skb)[24] == 0xff) ?
2955                                 RTN_MULTICAST : 0;
2956         else if (skb->protocol == ETH_P_IP)
2957                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2958                                 RTN_MULTICAST : 0;
2959         /* ... */
2960         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2961                 return RTN_BROADCAST;
2962         else {
2963                 u16 hdr_mac;
2964
2965                 hdr_mac = *((u16 *)skb->data);
2966                 /* tr multicast? */
2967                 switch (card->info.link_type) {
2968                 case QETH_LINK_TYPE_HSTR:
2969                 case QETH_LINK_TYPE_LANE_TR:
2970                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2971                             (hdr_mac == QETH_TR_MAC_C))
2972                                 return RTN_MULTICAST;
2973                         break;
2974                 /* eth or so multicast? */
2975                 default:
2976                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2977                             (hdr_mac == QETH_ETH_MAC_V6))
2978                                 return RTN_MULTICAST;
2979                 }
2980         }
2981         return cast_type;
2982 }
2983 EXPORT_SYMBOL_GPL(qeth_get_cast_type);
2984
2985 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2986                         int ipv, int cast_type)
2987 {
2988         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
2989                 return card->qdio.default_out_queue;
2990         switch (card->qdio.no_out_queues) {
2991         case 4:
2992                 if (cast_type && card->info.is_multicast_different)
2993                         return card->info.is_multicast_different &
2994                                 (card->qdio.no_out_queues - 1);
2995                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2996                         const u8 tos = ip_hdr(skb)->tos;
2997
2998                         if (card->qdio.do_prio_queueing ==
2999                                 QETH_PRIO_Q_ING_TOS) {
3000                                 if (tos & IP_TOS_NOTIMPORTANT)
3001                                         return 3;
3002                                 if (tos & IP_TOS_HIGHRELIABILITY)
3003                                         return 2;
3004                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3005                                         return 1;
3006                                 if (tos & IP_TOS_LOWDELAY)
3007                                         return 0;
3008                         }
3009                         if (card->qdio.do_prio_queueing ==
3010                                 QETH_PRIO_Q_ING_PREC)
3011                                 return 3 - (tos >> 6);
3012                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3013                         /* TODO: IPv6!!! */
3014                 }
3015                 return card->qdio.default_out_queue;
3016         case 1: /* fallthrough for single-out-queue 1920-device */
3017         default:
3018                 return card->qdio.default_out_queue;
3019         }
3020 }
3021 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3022
3023 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3024                      struct sk_buff *skb, int elems)
3025 {
3026         int elements_needed = 0;
3027
3028         if (skb_shinfo(skb)->nr_frags > 0)
3029                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3030         if (elements_needed == 0)
3031                 elements_needed = 1 + (((((unsigned long) skb->data) %
3032                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
3033         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3034                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3035                         "(Number=%d / Length=%d). Discarded.\n",
3036                         (elements_needed+elems), skb->len);
3037                 return 0;
3038         }
3039         return elements_needed;
3040 }
3041 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3042
3043 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3044         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3045         int offset)
3046 {
3047         int length = skb->len;
3048         int length_here;
3049         int element;
3050         char *data;
3051         int first_lap ;
3052
3053         element = *next_element_to_fill;
3054         data = skb->data;
3055         first_lap = (is_tso == 0 ? 1 : 0);
3056
3057         if (offset >= 0) {
3058                 data = skb->data + offset;
3059                 length -= offset;
3060                 first_lap = 0;
3061         }
3062
3063         while (length > 0) {
3064                 /* length_here is the remaining amount of data in this page */
3065                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3066                 if (length < length_here)
3067                         length_here = length;
3068
3069                 buffer->element[element].addr = data;
3070                 buffer->element[element].length = length_here;
3071                 length -= length_here;
3072                 if (!length) {
3073                         if (first_lap)
3074                                 buffer->element[element].flags = 0;
3075                         else
3076                                 buffer->element[element].flags =
3077                                     SBAL_FLAGS_LAST_FRAG;
3078                 } else {
3079                         if (first_lap)
3080                                 buffer->element[element].flags =
3081                                     SBAL_FLAGS_FIRST_FRAG;
3082                         else
3083                                 buffer->element[element].flags =
3084                                     SBAL_FLAGS_MIDDLE_FRAG;
3085                 }
3086                 data += length_here;
3087                 element++;
3088                 first_lap = 0;
3089         }
3090         *next_element_to_fill = element;
3091 }
3092
3093 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3094                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3095                 struct qeth_hdr *hdr, int offset, int hd_len)
3096 {
3097         struct qdio_buffer *buffer;
3098         int flush_cnt = 0, hdr_len, large_send = 0;
3099
3100         buffer = buf->buffer;
3101         atomic_inc(&skb->users);
3102         skb_queue_tail(&buf->skb_list, skb);
3103
3104         /*check first on TSO ....*/
3105         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3106                 int element = buf->next_element_to_fill;
3107
3108                 hdr_len = sizeof(struct qeth_hdr_tso) +
3109                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3110                 /*fill first buffer entry only with header information */
3111                 buffer->element[element].addr = skb->data;
3112                 buffer->element[element].length = hdr_len;
3113                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3114                 buf->next_element_to_fill++;
3115                 skb->data += hdr_len;
3116                 skb->len  -= hdr_len;
3117                 large_send = 1;
3118         }
3119
3120         if (offset >= 0) {
3121                 int element = buf->next_element_to_fill;
3122                 buffer->element[element].addr = hdr;
3123                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3124                                                         hd_len;
3125                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3126                 buf->is_header[element] = 1;
3127                 buf->next_element_to_fill++;
3128         }
3129
3130         if (skb_shinfo(skb)->nr_frags == 0)
3131                 __qeth_fill_buffer(skb, buffer, large_send,
3132                                 (int *)&buf->next_element_to_fill, offset);
3133         else
3134                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3135                                         (int *)&buf->next_element_to_fill);
3136
3137         if (!queue->do_pack) {
3138                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3139                 /* set state to PRIMED -> will be flushed */
3140                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3141                 flush_cnt = 1;
3142         } else {
3143                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3144                 if (queue->card->options.performance_stats)
3145                         queue->card->perf_stats.skbs_sent_pack++;
3146                 if (buf->next_element_to_fill >=
3147                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3148                         /*
3149                          * packed buffer if full -> set state PRIMED
3150                          * -> will be flushed
3151                          */
3152                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3153                         flush_cnt = 1;
3154                 }
3155         }
3156         return flush_cnt;
3157 }
3158
3159 int qeth_do_send_packet_fast(struct qeth_card *card,
3160                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3161                 struct qeth_hdr *hdr, int elements_needed,
3162                 struct qeth_eddp_context *ctx, int offset, int hd_len)
3163 {
3164         struct qeth_qdio_out_buffer *buffer;
3165         int buffers_needed = 0;
3166         int flush_cnt = 0;
3167         int index;
3168
3169         /* spin until we get the queue ... */
3170         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3171                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3172         /* ... now we've got the queue */
3173         index = queue->next_buf_to_fill;
3174         buffer = &queue->bufs[queue->next_buf_to_fill];
3175         /*
3176          * check if buffer is empty to make sure that we do not 'overtake'
3177          * ourselves and try to fill a buffer that is already primed
3178          */
3179         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3180                 goto out;
3181         if (ctx == NULL)
3182                 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3183                                           QDIO_MAX_BUFFERS_PER_Q;
3184         else {
3185                 buffers_needed = qeth_eddp_check_buffers_for_context(queue,
3186                                                                         ctx);
3187                 if (buffers_needed < 0)
3188                         goto out;
3189                 queue->next_buf_to_fill =
3190                         (queue->next_buf_to_fill + buffers_needed) %
3191                         QDIO_MAX_BUFFERS_PER_Q;
3192         }
3193         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3194         if (ctx == NULL) {
3195                 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3196                 qeth_flush_buffers(queue, index, 1);
3197         } else {
3198                 flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
3199                 WARN_ON(buffers_needed != flush_cnt);
3200                 qeth_flush_buffers(queue, index, flush_cnt);
3201         }
3202         return 0;
3203 out:
3204         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3205         return -EBUSY;
3206 }
3207 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3208
3209 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3210                 struct sk_buff *skb, struct qeth_hdr *hdr,
3211                 int elements_needed, struct qeth_eddp_context *ctx)
3212 {
3213         struct qeth_qdio_out_buffer *buffer;
3214         int start_index;
3215         int flush_count = 0;
3216         int do_pack = 0;
3217         int tmp;
3218         int rc = 0;
3219
3220         /* spin until we get the queue ... */
3221         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3222                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3223         start_index = queue->next_buf_to_fill;
3224         buffer = &queue->bufs[queue->next_buf_to_fill];
3225         /*
3226          * check if buffer is empty to make sure that we do not 'overtake'
3227          * ourselves and try to fill a buffer that is already primed
3228          */
3229         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3230                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3231                 return -EBUSY;
3232         }
3233         /* check if we need to switch packing state of this queue */
3234         qeth_switch_to_packing_if_needed(queue);
3235         if (queue->do_pack) {
3236                 do_pack = 1;
3237                 if (ctx == NULL) {
3238                         /* does packet fit in current buffer? */
3239                         if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3240                             buffer->next_element_to_fill) < elements_needed) {
3241                                 /* ... no -> set state PRIMED */
3242                                 atomic_set(&buffer->state,
3243                                         QETH_QDIO_BUF_PRIMED);
3244                                 flush_count++;
3245                                 queue->next_buf_to_fill =
3246                                         (queue->next_buf_to_fill + 1) %
3247                                         QDIO_MAX_BUFFERS_PER_Q;
3248                                 buffer = &queue->bufs[queue->next_buf_to_fill];
3249                                 /* we did a step forward, so check buffer state
3250                                  * again */
3251                                 if (atomic_read(&buffer->state) !=
3252                                                 QETH_QDIO_BUF_EMPTY){
3253                                         qeth_flush_buffers(queue, start_index,
3254                                                            flush_count);
3255                                         atomic_set(&queue->state,
3256                                                 QETH_OUT_Q_UNLOCKED);
3257                                         return -EBUSY;
3258                                 }
3259                         }
3260                 } else {
3261                         /* check if we have enough elements (including following
3262                          * free buffers) to handle eddp context */
3263                         if (qeth_eddp_check_buffers_for_context(queue, ctx)
3264                                 < 0) {
3265                                 rc = -EBUSY;
3266                                 goto out;
3267                         }
3268                 }
3269         }
3270         if (ctx == NULL)
3271                 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3272         else {
3273                 tmp = qeth_eddp_fill_buffer(queue, ctx,
3274                                                 queue->next_buf_to_fill);
3275                 if (tmp < 0) {
3276                         rc = -EBUSY;
3277                         goto out;
3278                 }
3279         }
3280         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3281                                   QDIO_MAX_BUFFERS_PER_Q;
3282         flush_count += tmp;
3283 out:
3284         if (flush_count)
3285                 qeth_flush_buffers(queue, start_index, flush_count);
3286         else if (!atomic_read(&queue->set_pci_flags_count))
3287                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3288         /*
3289          * queue->state will go from LOCKED -> UNLOCKED or from
3290          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3291          * (switch packing state or flush buffer to get another pci flag out).
3292          * In that case we will enter this loop
3293          */
3294         while (atomic_dec_return(&queue->state)) {
3295                 flush_count = 0;
3296                 start_index = queue->next_buf_to_fill;
3297                 /* check if we can go back to non-packing state */
3298                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3299                 /*
3300                  * check if we need to flush a packing buffer to get a pci
3301                  * flag out on the queue
3302                  */
3303                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3304                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3305                 if (flush_count)
3306                         qeth_flush_buffers(queue, start_index, flush_count);
3307         }
3308         /* at this point the queue is UNLOCKED again */
3309         if (queue->card->options.performance_stats && do_pack)
3310                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3311
3312         return rc;
3313 }
3314 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3315
3316 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3317                 struct qeth_reply *reply, unsigned long data)
3318 {
3319         struct qeth_ipa_cmd *cmd;
3320         struct qeth_ipacmd_setadpparms *setparms;
3321
3322         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3323
3324         cmd = (struct qeth_ipa_cmd *) data;
3325         setparms = &(cmd->data.setadapterparms);
3326
3327         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3328         if (cmd->hdr.return_code) {
3329                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3330                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3331         }
3332         card->info.promisc_mode = setparms->data.mode;
3333         return 0;
3334 }
3335
3336 void qeth_setadp_promisc_mode(struct qeth_card *card)
3337 {
3338         enum qeth_ipa_promisc_modes mode;
3339         struct net_device *dev = card->dev;
3340         struct qeth_cmd_buffer *iob;
3341         struct qeth_ipa_cmd *cmd;
3342
3343         QETH_DBF_TEXT(TRACE, 4, "setprom");
3344
3345         if (((dev->flags & IFF_PROMISC) &&
3346              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3347             (!(dev->flags & IFF_PROMISC) &&
3348              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3349                 return;
3350         mode = SET_PROMISC_MODE_OFF;
3351         if (dev->flags & IFF_PROMISC)
3352                 mode = SET_PROMISC_MODE_ON;
3353         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3354
3355         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3356                         sizeof(struct qeth_ipacmd_setadpparms));
3357         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3358         cmd->data.setadapterparms.data.mode = mode;
3359         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3360 }
3361 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3362
3363 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3364 {
3365         struct qeth_card *card;
3366         char dbf_text[15];
3367
3368         card = dev->ml_priv;
3369
3370         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3371         sprintf(dbf_text, "%8x", new_mtu);
3372         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3373
3374         if (new_mtu < 64)
3375                 return -EINVAL;
3376         if (new_mtu > 65535)
3377                 return -EINVAL;
3378         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3379             (!qeth_mtu_is_valid(card, new_mtu)))
3380                 return -EINVAL;
3381         dev->mtu = new_mtu;
3382         return 0;
3383 }
3384 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3385
3386 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3387 {
3388         struct qeth_card *card;
3389
3390         card = dev->ml_priv;
3391
3392         QETH_DBF_TEXT(TRACE, 5, "getstat");
3393
3394         return &card->stats;
3395 }
3396 EXPORT_SYMBOL_GPL(qeth_get_stats);
3397
3398 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3399                 struct qeth_reply *reply, unsigned long data)
3400 {
3401         struct qeth_ipa_cmd *cmd;
3402
3403         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3404
3405         cmd = (struct qeth_ipa_cmd *) data;
3406         if (!card->options.layer2 ||
3407             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3408                 memcpy(card->dev->dev_addr,
3409                        &cmd->data.setadapterparms.data.change_addr.addr,
3410                        OSA_ADDR_LEN);
3411                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3412         }
3413         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3414         return 0;
3415 }
3416
3417 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3418 {
3419         int rc;
3420         struct qeth_cmd_buffer *iob;
3421         struct qeth_ipa_cmd *cmd;
3422
3423         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3424
3425         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3426                                    sizeof(struct qeth_ipacmd_setadpparms));
3427         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3428         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3429         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3430         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3431                card->dev->dev_addr, OSA_ADDR_LEN);
3432         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3433                                NULL);
3434         return rc;
3435 }
3436 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3437
3438 void qeth_tx_timeout(struct net_device *dev)
3439 {
3440         struct qeth_card *card;
3441
3442         card = dev->ml_priv;
3443         card->stats.tx_errors++;
3444         qeth_schedule_recovery(card);
3445 }
3446 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3447
3448 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3449 {
3450         struct qeth_card *card = dev->ml_priv;
3451         int rc = 0;
3452
3453         switch (regnum) {
3454         case MII_BMCR: /* Basic mode control register */
3455                 rc = BMCR_FULLDPLX;
3456                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3457                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3458                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3459                         rc |= BMCR_SPEED100;
3460                 break;
3461         case MII_BMSR: /* Basic mode status register */
3462                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3463                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3464                      BMSR_100BASE4;
3465                 break;
3466         case MII_PHYSID1: /* PHYS ID 1 */
3467                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3468                      dev->dev_addr[2];
3469                 rc = (rc >> 5) & 0xFFFF;
3470                 break;
3471         case MII_PHYSID2: /* PHYS ID 2 */
3472                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3473                 break;
3474         case MII_ADVERTISE: /* Advertisement control reg */
3475                 rc = ADVERTISE_ALL;
3476                 break;
3477         case MII_LPA: /* Link partner ability reg */
3478                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3479                      LPA_100BASE4 | LPA_LPACK;
3480                 break;
3481         case MII_EXPANSION: /* Expansion register */
3482                 break;
3483         case MII_DCOUNTER: /* disconnect counter */
3484                 break;
3485         case MII_FCSCOUNTER: /* false carrier counter */
3486                 break;
3487         case MII_NWAYTEST: /* N-way auto-neg test register */
3488                 break;
3489         case MII_RERRCOUNTER: /* rx error counter */
3490                 rc = card->stats.rx_errors;
3491                 break;
3492         case MII_SREVISION: /* silicon revision */
3493                 break;
3494         case MII_RESV1: /* reserved 1 */
3495                 break;
3496         case MII_LBRERROR: /* loopback, rx, bypass error */
3497                 break;
3498         case MII_PHYADDR: /* physical address */
3499                 break;
3500         case MII_RESV2: /* reserved 2 */
3501                 break;
3502         case MII_TPISTATUS: /* TPI status for 10mbps */
3503                 break;
3504         case MII_NCONFIG: /* network interface config */
3505                 break;
3506         default:
3507                 break;
3508         }
3509         return rc;
3510 }
3511 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3512
3513 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3514                 struct qeth_cmd_buffer *iob, int len,
3515                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3516                         unsigned long),
3517                 void *reply_param)
3518 {
3519         u16 s1, s2;
3520
3521         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3522
3523         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3524         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3525                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3526         /* adjust PDU length fields in IPA_PDU_HEADER */
3527         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3528         s2 = (u32) len;
3529         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3530         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3531         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3532         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3533         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3534                                       reply_cb, reply_param);
3535 }
3536
3537 static int qeth_snmp_command_cb(struct qeth_card *card,
3538                 struct qeth_reply *reply, unsigned long sdata)
3539 {
3540         struct qeth_ipa_cmd *cmd;
3541         struct qeth_arp_query_info *qinfo;
3542         struct qeth_snmp_cmd *snmp;
3543         unsigned char *data;
3544         __u16 data_len;
3545
3546         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3547
3548         cmd = (struct qeth_ipa_cmd *) sdata;
3549         data = (unsigned char *)((char *)cmd - reply->offset);
3550         qinfo = (struct qeth_arp_query_info *) reply->param;
3551         snmp = &cmd->data.setadapterparms.data.snmp;
3552
3553         if (cmd->hdr.return_code) {
3554                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3555                 return 0;
3556         }
3557         if (cmd->data.setadapterparms.hdr.return_code) {
3558                 cmd->hdr.return_code =
3559                         cmd->data.setadapterparms.hdr.return_code;
3560                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3561                 return 0;
3562         }
3563         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3564         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3565                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3566         else
3567                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3568
3569         /* check if there is enough room in userspace */
3570         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3571                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3572                 cmd->hdr.return_code = -ENOMEM;
3573                 return 0;
3574         }
3575         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3576                        cmd->data.setadapterparms.hdr.used_total);
3577         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3578                 cmd->data.setadapterparms.hdr.seq_no);
3579         /*copy entries to user buffer*/
3580         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3581                 memcpy(qinfo->udata + qinfo->udata_offset,
3582                        (char *)snmp,
3583                        data_len + offsetof(struct qeth_snmp_cmd, data));
3584                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3585         } else {
3586                 memcpy(qinfo->udata + qinfo->udata_offset,
3587                        (char *)&snmp->request, data_len);
3588         }
3589         qinfo->udata_offset += data_len;
3590         /* check if all replies received ... */
3591                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3592                                cmd->data.setadapterparms.hdr.used_total);
3593                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3594                                cmd->data.setadapterparms.hdr.seq_no);
3595         if (cmd->data.setadapterparms.hdr.seq_no <
3596             cmd->data.setadapterparms.hdr.used_total)
3597                 return 1;
3598         return 0;
3599 }
3600
3601 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3602 {
3603         struct qeth_cmd_buffer *iob;
3604         struct qeth_ipa_cmd *cmd;
3605         struct qeth_snmp_ureq *ureq;
3606         int req_len;
3607         struct qeth_arp_query_info qinfo = {0, };
3608         int rc = 0;
3609
3610         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3611
3612         if (card->info.guestlan)
3613                 return -EOPNOTSUPP;
3614
3615         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3616             (!card->options.layer2)) {
3617                 return -EOPNOTSUPP;
3618         }
3619         /* skip 4 bytes (data_len struct member) to get req_len */
3620         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3621                 return -EFAULT;
3622         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3623         if (!ureq) {
3624                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3625                 return -ENOMEM;
3626         }
3627         if (copy_from_user(ureq, udata,
3628                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3629                 kfree(ureq);
3630                 return -EFAULT;
3631         }
3632         qinfo.udata_len = ureq->hdr.data_len;
3633         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3634         if (!qinfo.udata) {
3635                 kfree(ureq);
3636                 return -ENOMEM;
3637         }
3638         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3639
3640         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3641                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3642         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3643         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3644         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3645                                     qeth_snmp_command_cb, (void *)&qinfo);
3646         if (rc)
3647                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3648                            QETH_CARD_IFNAME(card), rc);
3649         else {
3650                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3651                         rc = -EFAULT;
3652         }
3653
3654         kfree(ureq);
3655         kfree(qinfo.udata);
3656         return rc;
3657 }
3658 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3659
3660 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3661 {
3662         switch (card->info.type) {
3663         case QETH_CARD_TYPE_IQD:
3664                 return 2;
3665         default:
3666                 return 0;
3667         }
3668 }
3669
3670 static int qeth_qdio_establish(struct qeth_card *card)
3671 {
3672         struct qdio_initialize init_data;
3673         char *qib_param_field;
3674         struct qdio_buffer **in_sbal_ptrs;
3675         struct qdio_buffer **out_sbal_ptrs;
3676         int i, j, k;
3677         int rc = 0;
3678
3679         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3680
3681         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3682                               GFP_KERNEL);
3683         if (!qib_param_field)
3684                 return -ENOMEM;
3685
3686         qeth_create_qib_param_field(card, qib_param_field);
3687         qeth_create_qib_param_field_blkt(card, qib_param_field);
3688
3689         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3690                                GFP_KERNEL);
3691         if (!in_sbal_ptrs) {
3692                 kfree(qib_param_field);
3693                 return -ENOMEM;
3694         }
3695         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3696                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3697                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3698
3699         out_sbal_ptrs =
3700                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3701                         sizeof(void *), GFP_KERNEL);
3702         if (!out_sbal_ptrs) {
3703                 kfree(in_sbal_ptrs);
3704                 kfree(qib_param_field);
3705                 return -ENOMEM;
3706         }
3707         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3708                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3709                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3710                                 card->qdio.out_qs[i]->bufs[j].buffer);
3711                 }
3712
3713         memset(&init_data, 0, sizeof(struct qdio_initialize));
3714         init_data.cdev                   = CARD_DDEV(card);
3715         init_data.q_format               = qeth_get_qdio_q_format(card);
3716         init_data.qib_param_field_format = 0;
3717         init_data.qib_param_field        = qib_param_field;
3718         init_data.no_input_qs            = 1;
3719         init_data.no_output_qs           = card->qdio.no_out_queues;
3720         init_data.input_handler          = card->discipline.input_handler;
3721         init_data.output_handler         = card->discipline.output_handler;
3722         init_data.int_parm               = (unsigned long) card;
3723         init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
3724                                            QDIO_OUTBOUND_0COPY_SBALS |
3725                                            QDIO_USE_OUTBOUND_PCIS;
3726         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3727         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3728
3729         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3730                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3731                 rc = qdio_initialize(&init_data);
3732                 if (rc)
3733                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3734         }
3735         kfree(out_sbal_ptrs);
3736         kfree(in_sbal_ptrs);
3737         kfree(qib_param_field);
3738         return rc;
3739 }
3740
3741 static void qeth_core_free_card(struct qeth_card *card)
3742 {
3743
3744         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3745         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3746         qeth_clean_channel(&card->read);
3747         qeth_clean_channel(&card->write);
3748         if (card->dev)
3749                 free_netdev(card->dev);
3750         kfree(card->ip_tbd_list);
3751         qeth_free_qdio_buffers(card);
3752         unregister_service_level(&card->qeth_service_level);
3753         kfree(card);
3754 }
3755
3756 static struct ccw_device_id qeth_ids[] = {
3757         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3758         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3759         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3760         {},
3761 };
3762 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3763
3764 static struct ccw_driver qeth_ccw_driver = {
3765         .name = "qeth",
3766         .ids = qeth_ids,
3767         .probe = ccwgroup_probe_ccwdev,
3768         .remove = ccwgroup_remove_ccwdev,
3769 };
3770
3771 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3772                                 unsigned long driver_id)
3773 {
3774         return ccwgroup_create_from_string(root_dev, driver_id,
3775                                            &qeth_ccw_driver, 3, buf);
3776 }
3777
3778 int qeth_core_hardsetup_card(struct qeth_card *card)
3779 {
3780         struct qdio_ssqd_desc *ssqd;
3781         int retries = 3;
3782         int mpno = 0;
3783         int rc;
3784
3785         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3786         atomic_set(&card->force_alloc_skb, 0);
3787 retry:
3788         if (retries < 3) {
3789                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3790                         dev_name(&card->gdev->dev));
3791                 ccw_device_set_offline(CARD_DDEV(card));
3792                 ccw_device_set_offline(CARD_WDEV(card));
3793                 ccw_device_set_offline(CARD_RDEV(card));
3794                 ccw_device_set_online(CARD_RDEV(card));
3795                 ccw_device_set_online(CARD_WDEV(card));
3796                 ccw_device_set_online(CARD_DDEV(card));
3797         }
3798         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3799         if (rc == -ERESTARTSYS) {
3800                 QETH_DBF_TEXT(SETUP, 2, "break1");
3801                 return rc;
3802         } else if (rc) {
3803                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3804                 if (--retries < 0)
3805                         goto out;
3806                 else
3807                         goto retry;
3808         }
3809
3810         rc = qeth_get_unitaddr(card);
3811         if (rc) {
3812                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3813                 return rc;
3814         }
3815
3816         ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL);
3817         if (!ssqd) {
3818                 rc = -ENOMEM;
3819                 goto out;
3820         }
3821         rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd);
3822         if (rc == 0)
3823                 mpno = ssqd->pcnt;
3824         kfree(ssqd);
3825
3826         if (mpno)
3827                 mpno = min(mpno - 1, QETH_MAX_PORTNO);
3828         if (card->info.portno > mpno) {
3829                 QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d"
3830                         "\n.", CARD_BUS_ID(card), card->info.portno);
3831                 rc = -ENODEV;
3832                 goto out;
3833         }
3834         qeth_init_tokens(card);
3835         qeth_init_func_level(card);
3836         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3837         if (rc == -ERESTARTSYS) {
3838                 QETH_DBF_TEXT(SETUP, 2, "break2");
3839                 return rc;
3840         } else if (rc) {
3841                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3842                 if (--retries < 0)
3843                         goto out;
3844                 else
3845                         goto retry;
3846         }
3847         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3848         if (rc == -ERESTARTSYS) {
3849                 QETH_DBF_TEXT(SETUP, 2, "break3");
3850                 return rc;
3851         } else if (rc) {
3852                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3853                 if (--retries < 0)
3854                         goto out;
3855                 else
3856                         goto retry;
3857         }
3858         rc = qeth_mpc_initialize(card);
3859         if (rc) {
3860                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3861                 goto out;
3862         }
3863         return 0;
3864 out:
3865         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3866                 "an error on the device\n");
3867         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3868                 dev_name(&card->gdev->dev), rc);
3869         return rc;
3870 }
3871 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3872
3873 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3874                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3875 {
3876         struct page *page = virt_to_page(element->addr);
3877         if (*pskb == NULL) {
3878                 /* the upper protocol layers assume that there is data in the
3879                  * skb itself. Copy a small amount (64 bytes) to make them
3880                  * happy. */
3881                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3882                 if (!(*pskb))
3883                         return -ENOMEM;
3884                 skb_reserve(*pskb, ETH_HLEN);
3885                 if (data_len <= 64) {
3886                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3887                                 data_len);
3888                 } else {
3889                         get_page(page);
3890                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3891                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3892                                 data_len - 64);
3893                         (*pskb)->data_len += data_len - 64;
3894                         (*pskb)->len      += data_len - 64;
3895                         (*pskb)->truesize += data_len - 64;
3896                         (*pfrag)++;
3897                 }
3898         } else {
3899                 get_page(page);
3900                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3901                 (*pskb)->data_len += data_len;
3902                 (*pskb)->len      += data_len;
3903                 (*pskb)->truesize += data_len;
3904                 (*pfrag)++;
3905         }
3906         return 0;
3907 }
3908
3909 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3910                 struct qdio_buffer *buffer,
3911                 struct qdio_buffer_element **__element, int *__offset,
3912                 struct qeth_hdr **hdr)
3913 {
3914         struct qdio_buffer_element *element = *__element;
3915         int offset = *__offset;
3916         struct sk_buff *skb = NULL;
3917         int skb_len;
3918         void *data_ptr;
3919         int data_len;
3920         int headroom = 0;
3921         int use_rx_sg = 0;
3922         int frag = 0;
3923
3924         /* qeth_hdr must not cross element boundaries */
3925         if (element->length < offset + sizeof(struct qeth_hdr)) {
3926                 if (qeth_is_last_sbale(element))
3927                         return NULL;
3928                 element++;
3929                 offset = 0;
3930                 if (element->length < sizeof(struct qeth_hdr))
3931                         return NULL;
3932         }
3933         *hdr = element->addr + offset;
3934
3935         offset += sizeof(struct qeth_hdr);
3936         if (card->options.layer2) {
3937                 if (card->info.type == QETH_CARD_TYPE_OSN) {
3938                         skb_len = (*hdr)->hdr.osn.pdu_length;
3939                         headroom = sizeof(struct qeth_hdr);
3940                 } else {
3941                         skb_len = (*hdr)->hdr.l2.pkt_length;
3942                 }
3943         } else {
3944                 skb_len = (*hdr)->hdr.l3.length;
3945                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3946                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
3947                         headroom = TR_HLEN;
3948                 else
3949                         headroom = ETH_HLEN;
3950         }
3951
3952         if (!skb_len)
3953                 return NULL;
3954
3955         if ((skb_len >= card->options.rx_sg_cb) &&
3956             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
3957             (!atomic_read(&card->force_alloc_skb))) {
3958                 use_rx_sg = 1;
3959         } else {
3960                 skb = dev_alloc_skb(skb_len + headroom);
3961                 if (!skb)
3962                         goto no_mem;
3963                 if (headroom)
3964                         skb_reserve(skb, headroom);
3965         }
3966
3967         data_ptr = element->addr + offset;
3968         while (skb_len) {
3969                 data_len = min(skb_len, (int)(element->length - offset));
3970                 if (data_len) {
3971                         if (use_rx_sg) {
3972                                 if (qeth_create_skb_frag(element, &skb, offset,
3973                                     &frag, data_len))
3974                                         goto no_mem;
3975                         } else {
3976                                 memcpy(skb_put(skb, data_len), data_ptr,
3977                                         data_len);
3978                         }
3979                 }
3980                 skb_len -= data_len;
3981                 if (skb_len) {
3982                         if (qeth_is_last_sbale(element)) {
3983                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
3984                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
3985                                         CARD_BUS_ID(card));
3986                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
3987                                 QETH_DBF_TEXT_(QERR, 2, "%s",
3988                                         CARD_BUS_ID(card));
3989                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
3990                                 dev_kfree_skb_any(skb);
3991                                 card->stats.rx_errors++;
3992                                 return NULL;
3993                         }
3994                         element++;
3995                         offset = 0;
3996                         data_ptr = element->addr;
3997                 } else {
3998                         offset += data_len;
3999                 }
4000         }
4001         *__element = element;
4002         *__offset = offset;
4003         if (use_rx_sg && card->options.performance_stats) {
4004                 card->perf_stats.sg_skbs_rx++;
4005                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4006         }
4007         return skb;
4008 no_mem:
4009         if (net_ratelimit()) {
4010                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4011                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4012         }
4013         card->stats.rx_dropped++;
4014         return NULL;
4015 }
4016 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4017
4018 static void qeth_unregister_dbf_views(void)
4019 {
4020         int x;
4021         for (x = 0; x < QETH_DBF_INFOS; x++) {
4022                 debug_unregister(qeth_dbf[x].id);
4023                 qeth_dbf[x].id = NULL;
4024         }
4025 }
4026
4027 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
4028 {
4029         char dbf_txt_buf[32];
4030         va_list args;
4031
4032         if (level > (qeth_dbf[dbf_nix].id)->level)
4033                 return;
4034         va_start(args, fmt);
4035         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4036         va_end(args);
4037         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4038 }
4039 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4040
4041 static int qeth_register_dbf_views(void)
4042 {
4043         int ret;
4044         int x;
4045
4046         for (x = 0; x < QETH_DBF_INFOS; x++) {
4047                 /* register the areas */
4048                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4049                                                 qeth_dbf[x].pages,
4050                                                 qeth_dbf[x].areas,
4051                                                 qeth_dbf[x].len);
4052                 if (qeth_dbf[x].id == NULL) {
4053                         qeth_unregister_dbf_views();
4054                         return -ENOMEM;
4055                 }
4056
4057                 /* register a view */
4058                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4059                 if (ret) {
4060                         qeth_unregister_dbf_views();
4061                         return ret;
4062                 }
4063
4064                 /* set a passing level */
4065                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4066         }
4067
4068         return 0;
4069 }
4070
4071 int qeth_core_load_discipline(struct qeth_card *card,
4072                 enum qeth_discipline_id discipline)
4073 {
4074         int rc = 0;
4075         switch (discipline) {
4076         case QETH_DISCIPLINE_LAYER3:
4077                 card->discipline.ccwgdriver = try_then_request_module(
4078                         symbol_get(qeth_l3_ccwgroup_driver),
4079                         "qeth_l3");
4080                 break;
4081         case QETH_DISCIPLINE_LAYER2:
4082                 card->discipline.ccwgdriver = try_then_request_module(
4083                         symbol_get(qeth_l2_ccwgroup_driver),
4084                         "qeth_l2");
4085                 break;
4086         }
4087         if (!card->discipline.ccwgdriver) {
4088                 dev_err(&card->gdev->dev, "There is no kernel module to "
4089                         "support discipline %d\n", discipline);
4090                 rc = -EINVAL;
4091         }
4092         return rc;
4093 }
4094
4095 void qeth_core_free_discipline(struct qeth_card *card)
4096 {
4097         if (card->options.layer2)
4098                 symbol_put(qeth_l2_ccwgroup_driver);
4099         else
4100                 symbol_put(qeth_l3_ccwgroup_driver);
4101         card->discipline.ccwgdriver = NULL;
4102 }
4103
4104 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4105 {
4106         struct qeth_card *card;
4107         struct device *dev;
4108         int rc;
4109         unsigned long flags;
4110
4111         QETH_DBF_TEXT(SETUP, 2, "probedev");
4112
4113         dev = &gdev->dev;
4114         if (!get_device(dev))
4115                 return -ENODEV;
4116
4117         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4118
4119         card = qeth_alloc_card();
4120         if (!card) {
4121                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4122                 rc = -ENOMEM;
4123                 goto err_dev;
4124         }
4125         card->read.ccwdev  = gdev->cdev[0];
4126         card->write.ccwdev = gdev->cdev[1];
4127         card->data.ccwdev  = gdev->cdev[2];
4128         dev_set_drvdata(&gdev->dev, card);
4129         card->gdev = gdev;
4130         gdev->cdev[0]->handler = qeth_irq;
4131         gdev->cdev[1]->handler = qeth_irq;
4132         gdev->cdev[2]->handler = qeth_irq;
4133
4134         rc = qeth_determine_card_type(card);
4135         if (rc) {
4136                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4137                 goto err_card;
4138         }
4139         rc = qeth_setup_card(card);
4140         if (rc) {
4141                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4142                 goto err_card;
4143         }
4144
4145         if (card->info.type == QETH_CARD_TYPE_OSN) {
4146                 rc = qeth_core_create_osn_attributes(dev);
4147                 if (rc)
4148                         goto err_card;
4149                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4150                 if (rc) {
4151                         qeth_core_remove_osn_attributes(dev);
4152                         goto err_card;
4153                 }
4154                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4155                 if (rc) {
4156                         qeth_core_free_discipline(card);
4157                         qeth_core_remove_osn_attributes(dev);
4158                         goto err_card;
4159                 }
4160         } else {
4161                 rc = qeth_core_create_device_attributes(dev);
4162                 if (rc)
4163                         goto err_card;
4164         }
4165
4166         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4167         list_add_tail(&card->list, &qeth_core_card_list.list);
4168         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4169         return 0;
4170
4171 err_card:
4172         qeth_core_free_card(card);
4173 err_dev:
4174         put_device(dev);
4175         return rc;
4176 }
4177
4178 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4179 {
4180         unsigned long flags;
4181         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4182
4183         QETH_DBF_TEXT(SETUP, 2, "removedv");
4184         if (card->discipline.ccwgdriver) {
4185                 card->discipline.ccwgdriver->remove(gdev);
4186                 qeth_core_free_discipline(card);
4187         }
4188
4189         if (card->info.type == QETH_CARD_TYPE_OSN) {
4190                 qeth_core_remove_osn_attributes(&gdev->dev);
4191         } else {
4192                 qeth_core_remove_device_attributes(&gdev->dev);
4193         }
4194         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4195         list_del(&card->list);
4196         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4197         qeth_core_free_card(card);
4198         dev_set_drvdata(&gdev->dev, NULL);
4199         put_device(&gdev->dev);
4200         return;
4201 }
4202
4203 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4204 {
4205         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4206         int rc = 0;
4207         int def_discipline;
4208
4209         if (!card->discipline.ccwgdriver) {
4210                 if (card->info.type == QETH_CARD_TYPE_IQD)
4211                         def_discipline = QETH_DISCIPLINE_LAYER3;
4212                 else
4213                         def_discipline = QETH_DISCIPLINE_LAYER2;
4214                 rc = qeth_core_load_discipline(card, def_discipline);
4215                 if (rc)
4216                         goto err;
4217                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4218                 if (rc)
4219                         goto err;
4220         }
4221         rc = card->discipline.ccwgdriver->set_online(gdev);
4222 err:
4223         return rc;
4224 }
4225
4226 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4227 {
4228         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4229         return card->discipline.ccwgdriver->set_offline(gdev);
4230 }
4231
4232 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4233 {
4234         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4235         if (card->discipline.ccwgdriver &&
4236             card->discipline.ccwgdriver->shutdown)
4237                 card->discipline.ccwgdriver->shutdown(gdev);
4238 }
4239
4240 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4241         .owner = THIS_MODULE,
4242         .name = "qeth",
4243         .driver_id = 0xD8C5E3C8,
4244         .probe = qeth_core_probe_device,
4245         .remove = qeth_core_remove_device,
4246         .set_online = qeth_core_set_online,
4247         .set_offline = qeth_core_set_offline,
4248         .shutdown = qeth_core_shutdown,
4249 };
4250
4251 static ssize_t
4252 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4253                            size_t count)
4254 {
4255         int err;
4256         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4257                                         qeth_core_ccwgroup_driver.driver_id);
4258         if (err)
4259                 return err;
4260         else
4261                 return count;
4262 }
4263
4264 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4265
4266 static struct {
4267         const char str[ETH_GSTRING_LEN];
4268 } qeth_ethtool_stats_keys[] = {
4269 /*  0 */{"rx skbs"},
4270         {"rx buffers"},
4271         {"tx skbs"},
4272         {"tx buffers"},
4273         {"tx skbs no packing"},
4274         {"tx buffers no packing"},
4275         {"tx skbs packing"},
4276         {"tx buffers packing"},
4277         {"tx sg skbs"},
4278         {"tx sg frags"},
4279 /* 10 */{"rx sg skbs"},
4280         {"rx sg frags"},
4281         {"rx sg page allocs"},
4282         {"tx large kbytes"},
4283         {"tx large count"},
4284         {"tx pk state ch n->p"},
4285         {"tx pk state ch p->n"},
4286         {"tx pk watermark low"},
4287         {"tx pk watermark high"},
4288         {"queue 0 buffer usage"},
4289 /* 20 */{"queue 1 buffer usage"},
4290         {"queue 2 buffer usage"},
4291         {"queue 3 buffer usage"},
4292         {"rx handler time"},
4293         {"rx handler count"},
4294         {"rx do_QDIO time"},
4295         {"rx do_QDIO count"},
4296         {"tx handler time"},
4297         {"tx handler count"},
4298         {"tx time"},
4299 /* 30 */{"tx count"},
4300         {"tx do_QDIO time"},
4301         {"tx do_QDIO count"},
4302 };
4303
4304 int qeth_core_get_stats_count(struct net_device *dev)
4305 {
4306         return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4307 }
4308 EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
4309
4310 void qeth_core_get_ethtool_stats(struct net_device *dev,
4311                 struct ethtool_stats *stats, u64 *data)
4312 {
4313         struct qeth_card *card = dev->ml_priv;
4314         data[0] = card->stats.rx_packets -
4315                                 card->perf_stats.initial_rx_packets;
4316         data[1] = card->perf_stats.bufs_rec;
4317         data[2] = card->stats.tx_packets -
4318                                 card->perf_stats.initial_tx_packets;
4319         data[3] = card->perf_stats.bufs_sent;
4320         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4321                         - card->perf_stats.skbs_sent_pack;
4322         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4323         data[6] = card->perf_stats.skbs_sent_pack;
4324         data[7] = card->perf_stats.bufs_sent_pack;
4325         data[8] = card->perf_stats.sg_skbs_sent;
4326         data[9] = card->perf_stats.sg_frags_sent;
4327         data[10] = card->perf_stats.sg_skbs_rx;
4328         data[11] = card->perf_stats.sg_frags_rx;
4329         data[12] = card->perf_stats.sg_alloc_page_rx;
4330         data[13] = (card->perf_stats.large_send_bytes >> 10);
4331         data[14] = card->perf_stats.large_send_cnt;
4332         data[15] = card->perf_stats.sc_dp_p;
4333         data[16] = card->perf_stats.sc_p_dp;
4334         data[17] = QETH_LOW_WATERMARK_PACK;
4335         data[18] = QETH_HIGH_WATERMARK_PACK;
4336         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4337         data[20] = (card->qdio.no_out_queues > 1) ?
4338                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4339         data[21] = (card->qdio.no_out_queues > 2) ?
4340                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4341         data[22] = (card->qdio.no_out_queues > 3) ?
4342                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4343         data[23] = card->perf_stats.inbound_time;
4344         data[24] = card->perf_stats.inbound_cnt;
4345         data[25] = card->perf_stats.inbound_do_qdio_time;
4346         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4347         data[27] = card->perf_stats.outbound_handler_time;
4348         data[28] = card->perf_stats.outbound_handler_cnt;
4349         data[29] = card->perf_stats.outbound_time;
4350         data[30] = card->perf_stats.outbound_cnt;
4351         data[31] = card->perf_stats.outbound_do_qdio_time;
4352         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4353 }
4354 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4355
4356 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4357 {
4358         switch (stringset) {
4359         case ETH_SS_STATS:
4360                 memcpy(data, &qeth_ethtool_stats_keys,
4361                         sizeof(qeth_ethtool_stats_keys));
4362                 break;
4363         default:
4364                 WARN_ON(1);
4365                 break;
4366         }
4367 }
4368 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4369
4370 void qeth_core_get_drvinfo(struct net_device *dev,
4371                 struct ethtool_drvinfo *info)
4372 {
4373         struct qeth_card *card = dev->ml_priv;
4374         if (card->options.layer2)
4375                 strcpy(info->driver, "qeth_l2");
4376         else
4377                 strcpy(info->driver, "qeth_l3");
4378
4379         strcpy(info->version, "1.0");
4380         strcpy(info->fw_version, card->info.mcl_level);
4381         sprintf(info->bus_info, "%s/%s/%s",
4382                         CARD_RDEV_ID(card),
4383                         CARD_WDEV_ID(card),
4384                         CARD_DDEV_ID(card));
4385 }
4386 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4387
4388 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4389                                         struct ethtool_cmd *ecmd)
4390 {
4391         struct qeth_card *card = netdev->ml_priv;
4392         enum qeth_link_types link_type;
4393
4394         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4395                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4396         else
4397                 link_type = card->info.link_type;
4398
4399         ecmd->transceiver = XCVR_INTERNAL;
4400         ecmd->supported = SUPPORTED_Autoneg;
4401         ecmd->advertising = ADVERTISED_Autoneg;
4402         ecmd->duplex = DUPLEX_FULL;
4403         ecmd->autoneg = AUTONEG_ENABLE;
4404
4405         switch (link_type) {
4406         case QETH_LINK_TYPE_FAST_ETH:
4407         case QETH_LINK_TYPE_LANE_ETH100:
4408                 ecmd->supported |= SUPPORTED_10baseT_Half |
4409                                         SUPPORTED_10baseT_Full |
4410                                         SUPPORTED_100baseT_Half |
4411                                         SUPPORTED_100baseT_Full |
4412                                         SUPPORTED_TP;
4413                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4414                                         ADVERTISED_10baseT_Full |
4415                                         ADVERTISED_100baseT_Half |
4416                                         ADVERTISED_100baseT_Full |
4417                                         ADVERTISED_TP;
4418                 ecmd->speed = SPEED_100;
4419                 ecmd->port = PORT_TP;
4420                 break;
4421
4422         case QETH_LINK_TYPE_GBIT_ETH:
4423         case QETH_LINK_TYPE_LANE_ETH1000:
4424                 ecmd->supported |= SUPPORTED_10baseT_Half |
4425                                         SUPPORTED_10baseT_Full |
4426                                         SUPPORTED_100baseT_Half |
4427                                         SUPPORTED_100baseT_Full |
4428                                         SUPPORTED_1000baseT_Half |
4429                                         SUPPORTED_1000baseT_Full |
4430                                         SUPPORTED_FIBRE;
4431                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4432                                         ADVERTISED_10baseT_Full |
4433                                         ADVERTISED_100baseT_Half |
4434                                         ADVERTISED_100baseT_Full |
4435                                         ADVERTISED_1000baseT_Half |
4436                                         ADVERTISED_1000baseT_Full |
4437                                         ADVERTISED_FIBRE;
4438                 ecmd->speed = SPEED_1000;
4439                 ecmd->port = PORT_FIBRE;
4440                 break;
4441
4442         case QETH_LINK_TYPE_10GBIT_ETH:
4443                 ecmd->supported |= SUPPORTED_10baseT_Half |
4444                                         SUPPORTED_10baseT_Full |
4445                                         SUPPORTED_100baseT_Half |
4446                                         SUPPORTED_100baseT_Full |
4447                                         SUPPORTED_1000baseT_Half |
4448                                         SUPPORTED_1000baseT_Full |
4449                                         SUPPORTED_10000baseT_Full |
4450                                         SUPPORTED_FIBRE;
4451                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4452                                         ADVERTISED_10baseT_Full |
4453                                         ADVERTISED_100baseT_Half |
4454                                         ADVERTISED_100baseT_Full |
4455                                         ADVERTISED_1000baseT_Half |
4456                                         ADVERTISED_1000baseT_Full |
4457                                         ADVERTISED_10000baseT_Full |
4458                                         ADVERTISED_FIBRE;
4459                 ecmd->speed = SPEED_10000;
4460                 ecmd->port = PORT_FIBRE;
4461                 break;
4462
4463         default:
4464                 ecmd->supported |= SUPPORTED_10baseT_Half |
4465                                         SUPPORTED_10baseT_Full |
4466                                         SUPPORTED_TP;
4467                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4468                                         ADVERTISED_10baseT_Full |
4469                                         ADVERTISED_TP;
4470                 ecmd->speed = SPEED_10;
4471                 ecmd->port = PORT_TP;
4472         }
4473
4474         return 0;
4475 }
4476 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4477
4478 static int __init qeth_core_init(void)
4479 {
4480         int rc;
4481
4482         pr_info("loading core functions\n");
4483         INIT_LIST_HEAD(&qeth_core_card_list.list);
4484         rwlock_init(&qeth_core_card_list.rwlock);
4485
4486         rc = qeth_register_dbf_views();
4487         if (rc)
4488                 goto out_err;
4489         rc = ccw_driver_register(&qeth_ccw_driver);
4490         if (rc)
4491                 goto ccw_err;
4492         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4493         if (rc)
4494                 goto ccwgroup_err;
4495         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4496                                 &driver_attr_group);
4497         if (rc)
4498                 goto driver_err;
4499         qeth_core_root_dev = s390_root_dev_register("qeth");
4500         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4501         if (rc)
4502                 goto register_err;
4503
4504         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4505                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4506         if (!qeth_core_header_cache) {
4507                 rc = -ENOMEM;
4508                 goto slab_err;
4509         }
4510
4511         return 0;
4512 slab_err:
4513         s390_root_dev_unregister(qeth_core_root_dev);
4514 register_err:
4515         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4516                            &driver_attr_group);
4517 driver_err:
4518         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4519 ccwgroup_err:
4520         ccw_driver_unregister(&qeth_ccw_driver);
4521 ccw_err:
4522         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4523         qeth_unregister_dbf_views();
4524 out_err:
4525         pr_err("Initializing the qeth device driver failed\n");
4526         return rc;
4527 }
4528
4529 static void __exit qeth_core_exit(void)
4530 {
4531         s390_root_dev_unregister(qeth_core_root_dev);
4532         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4533                            &driver_attr_group);
4534         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4535         ccw_driver_unregister(&qeth_ccw_driver);
4536         kmem_cache_destroy(qeth_core_header_cache);
4537         qeth_unregister_dbf_views();
4538         pr_info("core functions removed\n");
4539 }
4540
4541 module_init(qeth_core_init);
4542 module_exit(qeth_core_exit);
4543 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4544 MODULE_DESCRIPTION("qeth core functions");
4545 MODULE_LICENSE("GPL");