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