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   1 /*
   2  *  drivers/s390/net/qeth_core_main.c
   3  *
   4  *    Copyright IBM Corp. 2007
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/ip.h>
  20 #include <linux/ipv6.h>
  21 #include <linux/tcp.h>
  22 #include <linux/mii.h>
  23 #include <linux/kthread.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/io.h>
  27 #include <asm/s390_rdev.h>
  28
  29 #include "qeth_core.h"
  30 #include "qeth_core_offl.h"
  31
  32 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  33         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  34         /*                   N  P  A    M  L  V                      H  */
  35         [QETH_DBF_SETUP] = {"qeth_setup",
  36                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  37         [QETH_DBF_QERR]  = {"qeth_qerr",
  38                                 2, 1,   8, 2, &debug_hex_ascii_view, NULL},
  39         [QETH_DBF_TRACE] = {"qeth_trace",
  40                                 4, 1,   8, 3, &debug_hex_ascii_view, NULL},
  41         [QETH_DBF_MSG]   = {"qeth_msg",
  42                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  43         [QETH_DBF_SENSE] = {"qeth_sense",
  44                                 2, 1,  64, 2, &debug_hex_ascii_view, NULL},
  45         [QETH_DBF_MISC]  = {"qeth_misc",
  46                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  47         [QETH_DBF_CTRL]  = {"qeth_control",
  48                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  49 };
  50 EXPORT_SYMBOL_GPL(qeth_dbf);
  51
  52 struct qeth_card_list_struct qeth_core_card_list;
  53 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  54 struct kmem_cache *qeth_core_header_cache;
  55 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  56
  57 static struct device *qeth_core_root_dev;
  58 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  59 static struct lock_class_key qdio_out_skb_queue_key;
  60
  61 static void qeth_send_control_data_cb(struct qeth_channel *,
  62                         struct qeth_cmd_buffer *);
  63 static int qeth_issue_next_read(struct qeth_card *);
  64 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  65 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  66 static void qeth_free_buffer_pool(struct qeth_card *);
  67 static int qeth_qdio_establish(struct qeth_card *);
  68
  69
  70 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  71                 struct qdio_buffer *buffer, int is_tso,
  72                 int *next_element_to_fill)
  73 {
  74         struct skb_frag_struct *frag;
  75         int fragno;
  76         unsigned long addr;
  77         int element, cnt, dlen;
  78
  79         fragno = skb_shinfo(skb)->nr_frags;
  80         element = *next_element_to_fill;
  81         dlen = 0;
  82
  83         if (is_tso)
  84                 buffer->element[element].flags =
  85                         SBAL_FLAGS_MIDDLE_FRAG;
  86         else
  87                 buffer->element[element].flags =
  88                         SBAL_FLAGS_FIRST_FRAG;
  89         dlen = skb->len - skb->data_len;
  90         if (dlen) {
  91                 buffer->element[element].addr = skb->data;
  92                 buffer->element[element].length = dlen;
  93                 element++;
  94         }
  95         for (cnt = 0; cnt < fragno; cnt++) {
  96                 frag = &skb_shinfo(skb)->frags[cnt];
  97                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  98                         frag->page_offset;
  99                 buffer->element[element].addr = (char *)addr;
 100                 buffer->element[element].length = frag->size;
 101                 if (cnt < (fragno - 1))
 102                         buffer->element[element].flags =
 103                                 SBAL_FLAGS_MIDDLE_FRAG;
 104                 else
 105                         buffer->element[element].flags =
 106                                 SBAL_FLAGS_LAST_FRAG;
 107                 element++;
 108         }
 109         *next_element_to_fill = element;
 110 }
 111
 112 static inline const char *qeth_get_cardname(struct qeth_card *card)
 113 {
 114         if (card->info.guestlan) {
 115                 switch (card->info.type) {
 116                 case QETH_CARD_TYPE_OSAE:
 117                         return " Guest LAN QDIO";
 118                 case QETH_CARD_TYPE_IQD:
 119                         return " Guest LAN Hiper";
 120                 default:
 121                         return " unknown";
 122                 }
 123         } else {
 124                 switch (card->info.type) {
 125                 case QETH_CARD_TYPE_OSAE:
 126                         return " OSD Express";
 127                 case QETH_CARD_TYPE_IQD:
 128                         return " HiperSockets";
 129                 case QETH_CARD_TYPE_OSN:
 130                         return " OSN QDIO";
 131                 default:
 132                         return " unknown";
 133                 }
 134         }
 135         return " n/a";
 136 }
 137
 138 /* max length to be returned: 14 */
 139 const char *qeth_get_cardname_short(struct qeth_card *card)
 140 {
 141         if (card->info.guestlan) {
 142                 switch (card->info.type) {
 143                 case QETH_CARD_TYPE_OSAE:
 144                         return "GuestLAN QDIO";
 145                 case QETH_CARD_TYPE_IQD:
 146                         return "GuestLAN Hiper";
 147                 default:
 148                         return "unknown";
 149                 }
 150         } else {
 151                 switch (card->info.type) {
 152                 case QETH_CARD_TYPE_OSAE:
 153                         switch (card->info.link_type) {
 154                         case QETH_LINK_TYPE_FAST_ETH:
 155                                 return "OSD_100";
 156                         case QETH_LINK_TYPE_HSTR:
 157                                 return "HSTR";
 158                         case QETH_LINK_TYPE_GBIT_ETH:
 159                                 return "OSD_1000";
 160                         case QETH_LINK_TYPE_10GBIT_ETH:
 161                                 return "OSD_10GIG";
 162                         case QETH_LINK_TYPE_LANE_ETH100:
 163                                 return "OSD_FE_LANE";
 164                         case QETH_LINK_TYPE_LANE_TR:
 165                                 return "OSD_TR_LANE";
 166                         case QETH_LINK_TYPE_LANE_ETH1000:
 167                                 return "OSD_GbE_LANE";
 168                         case QETH_LINK_TYPE_LANE:
 169                                 return "OSD_ATM_LANE";
 170                         default:
 171                                 return "OSD_Express";
 172                         }
 173                 case QETH_CARD_TYPE_IQD:
 174                         return "HiperSockets";
 175                 case QETH_CARD_TYPE_OSN:
 176                         return "OSN";
 177                 default:
 178                         return "unknown";
 179                 }
 180         }
 181         return "n/a";
 182 }
 183
 184 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 185                          int clear_start_mask)
 186 {
 187         unsigned long flags;
 188
 189         spin_lock_irqsave(&card->thread_mask_lock, flags);
 190         card->thread_allowed_mask = threads;
 191         if (clear_start_mask)
 192                 card->thread_start_mask &= threads;
 193         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 194         wake_up(&card->wait_q);
 195 }
 196 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 197
 198 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 199 {
 200         unsigned long flags;
 201         int rc = 0;
 202
 203         spin_lock_irqsave(&card->thread_mask_lock, flags);
 204         rc = (card->thread_running_mask & threads);
 205         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 206         return rc;
 207 }
 208 EXPORT_SYMBOL_GPL(qeth_threads_running);
 209
 210 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 211 {
 212         return wait_event_interruptible(card->wait_q,
 213                         qeth_threads_running(card, threads) == 0);
 214 }
 215 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 216
 217 void qeth_clear_working_pool_list(struct qeth_card *card)
 218 {
 219         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 220
 221         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 222         list_for_each_entry_safe(pool_entry, tmp,
 223                             &card->qdio.in_buf_pool.entry_list, list){
 224                         list_del(&pool_entry->list);
 225         }
 226 }
 227 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 228
 229 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 230 {
 231         struct qeth_buffer_pool_entry *pool_entry;
 232         void *ptr;
 233         int i, j;
 234
 235         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 236         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 237                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 238                 if (!pool_entry) {
 239                         qeth_free_buffer_pool(card);
 240                         return -ENOMEM;
 241                 }
 242                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 243                         ptr = (void *) __get_free_page(GFP_KERNEL);
 244                         if (!ptr) {
 245                                 while (j > 0)
 246                                         free_page((unsigned long)
 247                                                   pool_entry->elements[--j]);
 248                                 kfree(pool_entry);
 249                                 qeth_free_buffer_pool(card);
 250                                 return -ENOMEM;
 251                         }
 252                         pool_entry->elements[j] = ptr;
 253                 }
 254                 list_add(&pool_entry->init_list,
 255                          &card->qdio.init_pool.entry_list);
 256         }
 257         return 0;
 258 }
 259
 260 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 261 {
 262         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 263
 264         if ((card->state != CARD_STATE_DOWN) &&
 265             (card->state != CARD_STATE_RECOVER))
 266                 return -EPERM;
 267
 268         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 269         qeth_clear_working_pool_list(card);
 270         qeth_free_buffer_pool(card);
 271         card->qdio.in_buf_pool.buf_count = bufcnt;
 272         card->qdio.init_pool.buf_count = bufcnt;
 273         return qeth_alloc_buffer_pool(card);
 274 }
 275
 276 int qeth_set_large_send(struct qeth_card *card,
 277                 enum qeth_large_send_types type)
 278 {
 279         int rc = 0;
 280
 281         if (card->dev == NULL) {
 282                 card->options.large_send = type;
 283                 return 0;
 284         }
 285         if (card->state == CARD_STATE_UP)
 286                 netif_tx_disable(card->dev);
 287         card->options.large_send = type;
 288         switch (card->options.large_send) {
 289         case QETH_LARGE_SEND_EDDP:
 290                 if (card->info.type != QETH_CARD_TYPE_IQD) {
 291                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 292                                         NETIF_F_HW_CSUM;
 293                 } else {
 294                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 295                                                 NETIF_F_HW_CSUM);
 296                         card->options.large_send = QETH_LARGE_SEND_NO;
 297                         rc = -EOPNOTSUPP;
 298                 }
 299                 break;
 300         case QETH_LARGE_SEND_TSO:
 301                 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
 302                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 303                                                 NETIF_F_HW_CSUM;
 304                 } else {
 305                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 306                                                 NETIF_F_HW_CSUM);
 307                         card->options.large_send = QETH_LARGE_SEND_NO;
 308                         rc = -EOPNOTSUPP;
 309                 }
 310                 break;
 311         default: /* includes QETH_LARGE_SEND_NO */
 312                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 313                                         NETIF_F_HW_CSUM);
 314                 break;
 315         }
 316         if (card->state == CARD_STATE_UP)
 317                 netif_wake_queue(card->dev);
 318         return rc;
 319 }
 320 EXPORT_SYMBOL_GPL(qeth_set_large_send);
 321
 322 static int qeth_issue_next_read(struct qeth_card *card)
 323 {
 324         int rc;
 325         struct qeth_cmd_buffer *iob;
 326
 327         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 328         if (card->read.state != CH_STATE_UP)
 329                 return -EIO;
 330         iob = qeth_get_buffer(&card->read);
 331         if (!iob) {
 332                 dev_warn(&card->gdev->dev, "The qeth device driver "
 333                         "failed to recover an error on the device\n");
 334                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 335                         "available\n", dev_name(&card->gdev->dev));
 336                 return -ENOMEM;
 337         }
 338         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 339         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 340         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 341                               (addr_t) iob, 0, 0);
 342         if (rc) {
 343                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 344                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 345                 atomic_set(&card->read.irq_pending, 0);
 346                 qeth_schedule_recovery(card);
 347                 wake_up(&card->wait_q);
 348         }
 349         return rc;
 350 }
 351
 352 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 353 {
 354         struct qeth_reply *reply;
 355
 356         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 357         if (reply) {
 358                 atomic_set(&reply->refcnt, 1);
 359                 atomic_set(&reply->received, 0);
 360                 reply->card = card;
 361         };
 362         return reply;
 363 }
 364
 365 static void qeth_get_reply(struct qeth_reply *reply)
 366 {
 367         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 368         atomic_inc(&reply->refcnt);
 369 }
 370
 371 static void qeth_put_reply(struct qeth_reply *reply)
 372 {
 373         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 374         if (atomic_dec_and_test(&reply->refcnt))
 375                 kfree(reply);
 376 }
 377
 378 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 379                 struct qeth_card *card)
 380 {
 381         char *ipa_name;
 382         int com = cmd->hdr.command;
 383         ipa_name = qeth_get_ipa_cmd_name(com);
 384         if (rc)
 385                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 386                                 ipa_name, com, QETH_CARD_IFNAME(card),
 387                                         rc, qeth_get_ipa_msg(rc));
 388         else
 389                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 390                                 ipa_name, com, QETH_CARD_IFNAME(card));
 391 }
 392
 393 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 394                 struct qeth_cmd_buffer *iob)
 395 {
 396         struct qeth_ipa_cmd *cmd = NULL;
 397
 398         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 399         if (IS_IPA(iob->data)) {
 400                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 401                 if (IS_IPA_REPLY(cmd)) {
 402                         if (cmd->hdr.command < IPA_CMD_SETCCID ||
 403                             cmd->hdr.command > IPA_CMD_MODCCID)
 404                                 qeth_issue_ipa_msg(cmd,
 405                                                 cmd->hdr.return_code, card);
 406                         return cmd;
 407                 } else {
 408                         switch (cmd->hdr.command) {
 409                         case IPA_CMD_STOPLAN:
 410                                 dev_warn(&card->gdev->dev,
 411                                            "The link for interface %s on CHPID"
 412                                            " 0x%X failed\n",
 413                                            QETH_CARD_IFNAME(card),
 414                                            card->info.chpid);
 415                                 card->lan_online = 0;
 416                                 if (card->dev && netif_carrier_ok(card->dev))
 417                                         netif_carrier_off(card->dev);
 418                                 return NULL;
 419                         case IPA_CMD_STARTLAN:
 420                                 dev_info(&card->gdev->dev,
 421                                            "The link for %s on CHPID 0x%X has"
 422                                            " been restored\n",
 423                                            QETH_CARD_IFNAME(card),
 424                                            card->info.chpid);
 425                                 netif_carrier_on(card->dev);
 426                                 card->lan_online = 1;
 427                                 qeth_schedule_recovery(card);
 428                                 return NULL;
 429                         case IPA_CMD_MODCCID:
 430                                 return cmd;
 431                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 432                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 433                                 break;
 434                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 435                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 436                                 break;
 437                         default:
 438                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 439                                            "but not a reply!\n");
 440                                 break;
 441                         }
 442                 }
 443         }
 444         return cmd;
 445 }
 446
 447 void qeth_clear_ipacmd_list(struct qeth_card *card)
 448 {
 449         struct qeth_reply *reply, *r;
 450         unsigned long flags;
 451
 452         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 453
 454         spin_lock_irqsave(&card->lock, flags);
 455         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 456                 qeth_get_reply(reply);
 457                 reply->rc = -EIO;
 458                 atomic_inc(&reply->received);
 459                 list_del_init(&reply->list);
 460                 wake_up(&reply->wait_q);
 461                 qeth_put_reply(reply);
 462         }
 463         spin_unlock_irqrestore(&card->lock, flags);
 464 }
 465 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 466
 467 static int qeth_check_idx_response(unsigned char *buffer)
 468 {
 469         if (!buffer)
 470                 return 0;
 471
 472         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 473         if ((buffer[2] & 0xc0) == 0xc0) {
 474                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 475                            "with cause code 0x%02x%s\n",
 476                            buffer[4],
 477                            ((buffer[4] == 0x22) ?
 478                             " -- try another portname" : ""));
 479                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 480                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 481                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 482                 return -EIO;
 483         }
 484         return 0;
 485 }
 486
 487 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 488                 __u32 len)
 489 {
 490         struct qeth_card *card;
 491
 492         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 493         card = CARD_FROM_CDEV(channel->ccwdev);
 494         if (channel == &card->read)
 495                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 496         else
 497                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 498         channel->ccw.count = len;
 499         channel->ccw.cda = (__u32) __pa(iob);
 500 }
 501
 502 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 503 {
 504         __u8 index;
 505
 506         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 507         index = channel->io_buf_no;
 508         do {
 509                 if (channel->iob[index].state == BUF_STATE_FREE) {
 510                         channel->iob[index].state = BUF_STATE_LOCKED;
 511                         channel->io_buf_no = (channel->io_buf_no + 1) %
 512                                 QETH_CMD_BUFFER_NO;
 513                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 514                         return channel->iob + index;
 515                 }
 516                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 517         } while (index != channel->io_buf_no);
 518
 519         return NULL;
 520 }
 521
 522 void qeth_release_buffer(struct qeth_channel *channel,
 523                 struct qeth_cmd_buffer *iob)
 524 {
 525         unsigned long flags;
 526
 527         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 528         spin_lock_irqsave(&channel->iob_lock, flags);
 529         memset(iob->data, 0, QETH_BUFSIZE);
 530         iob->state = BUF_STATE_FREE;
 531         iob->callback = qeth_send_control_data_cb;
 532         iob->rc = 0;
 533         spin_unlock_irqrestore(&channel->iob_lock, flags);
 534 }
 535 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 536
 537 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 538 {
 539         struct qeth_cmd_buffer *buffer = NULL;
 540         unsigned long flags;
 541
 542         spin_lock_irqsave(&channel->iob_lock, flags);
 543         buffer = __qeth_get_buffer(channel);
 544         spin_unlock_irqrestore(&channel->iob_lock, flags);
 545         return buffer;
 546 }
 547
 548 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 549 {
 550         struct qeth_cmd_buffer *buffer;
 551         wait_event(channel->wait_q,
 552                    ((buffer = qeth_get_buffer(channel)) != NULL));
 553         return buffer;
 554 }
 555 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 556
 557 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 558 {
 559         int cnt;
 560
 561         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 562                 qeth_release_buffer(channel, &channel->iob[cnt]);
 563         channel->buf_no = 0;
 564         channel->io_buf_no = 0;
 565 }
 566 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 567
 568 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 569                   struct qeth_cmd_buffer *iob)
 570 {
 571         struct qeth_card *card;
 572         struct qeth_reply *reply, *r;
 573         struct qeth_ipa_cmd *cmd;
 574         unsigned long flags;
 575         int keep_reply;
 576
 577         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 578
 579         card = CARD_FROM_CDEV(channel->ccwdev);
 580         if (qeth_check_idx_response(iob->data)) {
 581                 qeth_clear_ipacmd_list(card);
 582                 if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6)
 583                         dev_err(&card->gdev->dev,
 584                                 "The qeth device is not configured "
 585                                 "for the OSI layer required by z/VM\n");
 586                 qeth_schedule_recovery(card);
 587                 goto out;
 588         }
 589
 590         cmd = qeth_check_ipa_data(card, iob);
 591         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 592                 goto out;
 593         /*in case of OSN : check if cmd is set */
 594         if (card->info.type == QETH_CARD_TYPE_OSN &&
 595             cmd &&
 596             cmd->hdr.command != IPA_CMD_STARTLAN &&
 597             card->osn_info.assist_cb != NULL) {
 598                 card->osn_info.assist_cb(card->dev, cmd);
 599                 goto out;
 600         }
 601
 602         spin_lock_irqsave(&card->lock, flags);
 603         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 604                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 605                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 606                         qeth_get_reply(reply);
 607                         list_del_init(&reply->list);
 608                         spin_unlock_irqrestore(&card->lock, flags);
 609                         keep_reply = 0;
 610                         if (reply->callback != NULL) {
 611                                 if (cmd) {
 612                                         reply->offset = (__u16)((char *)cmd -
 613                                                         (char *)iob->data);
 614                                         keep_reply = reply->callback(card,
 615                                                         reply,
 616                                                         (unsigned long)cmd);
 617                                 } else
 618                                         keep_reply = reply->callback(card,
 619                                                         reply,
 620                                                         (unsigned long)iob);
 621                         }
 622                         if (cmd)
 623                                 reply->rc = (u16) cmd->hdr.return_code;
 624                         else if (iob->rc)
 625                                 reply->rc = iob->rc;
 626                         if (keep_reply) {
 627                                 spin_lock_irqsave(&card->lock, flags);
 628                                 list_add_tail(&reply->list,
 629                                               &card->cmd_waiter_list);
 630                                 spin_unlock_irqrestore(&card->lock, flags);
 631                         } else {
 632                                 atomic_inc(&reply->received);
 633                                 wake_up(&reply->wait_q);
 634                         }
 635                         qeth_put_reply(reply);
 636                         goto out;
 637                 }
 638         }
 639         spin_unlock_irqrestore(&card->lock, flags);
 640 out:
 641         memcpy(&card->seqno.pdu_hdr_ack,
 642                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 643                 QETH_SEQ_NO_LENGTH);
 644         qeth_release_buffer(channel, iob);
 645 }
 646
 647 static int qeth_setup_channel(struct qeth_channel *channel)
 648 {
 649         int cnt;
 650
 651         QETH_DBF_TEXT(SETUP, 2, "setupch");
 652         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 653                 channel->iob[cnt].data = (char *)
 654                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 655                 if (channel->iob[cnt].data == NULL)
 656                         break;
 657                 channel->iob[cnt].state = BUF_STATE_FREE;
 658                 channel->iob[cnt].channel = channel;
 659                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 660                 channel->iob[cnt].rc = 0;
 661         }
 662         if (cnt < QETH_CMD_BUFFER_NO) {
 663                 while (cnt-- > 0)
 664                         kfree(channel->iob[cnt].data);
 665                 return -ENOMEM;
 666         }
 667         channel->buf_no = 0;
 668         channel->io_buf_no = 0;
 669         atomic_set(&channel->irq_pending, 0);
 670         spin_lock_init(&channel->iob_lock);
 671
 672         init_waitqueue_head(&channel->wait_q);
 673         return 0;
 674 }
 675
 676 static int qeth_set_thread_start_bit(struct qeth_card *card,
 677                 unsigned long thread)
 678 {
 679         unsigned long flags;
 680
 681         spin_lock_irqsave(&card->thread_mask_lock, flags);
 682         if (!(card->thread_allowed_mask & thread) ||
 683               (card->thread_start_mask & thread)) {
 684                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 685                 return -EPERM;
 686         }
 687         card->thread_start_mask |= thread;
 688         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 689         return 0;
 690 }
 691
 692 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 693 {
 694         unsigned long flags;
 695
 696         spin_lock_irqsave(&card->thread_mask_lock, flags);
 697         card->thread_start_mask &= ~thread;
 698         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 699         wake_up(&card->wait_q);
 700 }
 701 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 702
 703 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 704 {
 705         unsigned long flags;
 706
 707         spin_lock_irqsave(&card->thread_mask_lock, flags);
 708         card->thread_running_mask &= ~thread;
 709         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 710         wake_up(&card->wait_q);
 711 }
 712 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 713
 714 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 715 {
 716         unsigned long flags;
 717         int rc = 0;
 718
 719         spin_lock_irqsave(&card->thread_mask_lock, flags);
 720         if (card->thread_start_mask & thread) {
 721                 if ((card->thread_allowed_mask & thread) &&
 722                     !(card->thread_running_mask & thread)) {
 723                         rc = 1;
 724                         card->thread_start_mask &= ~thread;
 725                         card->thread_running_mask |= thread;
 726                 } else
 727                         rc = -EPERM;
 728         }
 729         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 730         return rc;
 731 }
 732
 733 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 734 {
 735         int rc = 0;
 736
 737         wait_event(card->wait_q,
 738                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 739         return rc;
 740 }
 741 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 742
 743 void qeth_schedule_recovery(struct qeth_card *card)
 744 {
 745         QETH_DBF_TEXT(TRACE, 2, "startrec");
 746         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 747                 schedule_work(&card->kernel_thread_starter);
 748 }
 749 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 750
 751 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 752 {
 753         int dstat, cstat;
 754         char *sense;
 755
 756         sense = (char *) irb->ecw;
 757         cstat = irb->scsw.cmd.cstat;
 758         dstat = irb->scsw.cmd.dstat;
 759
 760         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 761                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 762                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 763                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 764                 dev_warn(&cdev->dev, "The qeth device driver "
 765                         "failed to recover an error on the device\n");
 766                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
 767                         dev_name(&cdev->dev), dstat, cstat);
 768                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 769                                 16, 1, irb, 64, 1);
 770                 return 1;
 771         }
 772
 773         if (dstat & DEV_STAT_UNIT_CHECK) {
 774                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 775                     SENSE_RESETTING_EVENT_FLAG) {
 776                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 777                         return 1;
 778                 }
 779                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 780                     SENSE_COMMAND_REJECT_FLAG) {
 781                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 782                         return 1;
 783                 }
 784                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 785                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 786                         return 1;
 787                 }
 788                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 789                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 790                         return 0;
 791                 }
 792                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 793                         return 1;
 794         }
 795         return 0;
 796 }
 797
 798 static long __qeth_check_irb_error(struct ccw_device *cdev,
 799                 unsigned long intparm, struct irb *irb)
 800 {
 801         if (!IS_ERR(irb))
 802                 return 0;
 803
 804         switch (PTR_ERR(irb)) {
 805         case -EIO:
 806                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 807                         dev_name(&cdev->dev));
 808                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 809                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 810                 break;
 811         case -ETIMEDOUT:
 812                 dev_warn(&cdev->dev, "A hardware operation timed out"
 813                         " on the device\n");
 814                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 815                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
 816                 if (intparm == QETH_RCD_PARM) {
 817                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 818
 819                         if (card && (card->data.ccwdev == cdev)) {
 820                                 card->data.state = CH_STATE_DOWN;
 821                                 wake_up(&card->wait_q);
 822                         }
 823                 }
 824                 break;
 825         default:
 826                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 827                         dev_name(&cdev->dev), PTR_ERR(irb));
 828                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 829                 QETH_DBF_TEXT(TRACE, 2, "  rc???");
 830         }
 831         return PTR_ERR(irb);
 832 }
 833
 834 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 835                 struct irb *irb)
 836 {
 837         int rc;
 838         int cstat, dstat;
 839         struct qeth_cmd_buffer *buffer;
 840         struct qeth_channel *channel;
 841         struct qeth_card *card;
 842         struct qeth_cmd_buffer *iob;
 843         __u8 index;
 844
 845         QETH_DBF_TEXT(TRACE, 5, "irq");
 846
 847         if (__qeth_check_irb_error(cdev, intparm, irb))
 848                 return;
 849         cstat = irb->scsw.cmd.cstat;
 850         dstat = irb->scsw.cmd.dstat;
 851
 852         card = CARD_FROM_CDEV(cdev);
 853         if (!card)
 854                 return;
 855
 856         if (card->read.ccwdev == cdev) {
 857                 channel = &card->read;
 858                 QETH_DBF_TEXT(TRACE, 5, "read");
 859         } else if (card->write.ccwdev == cdev) {
 860                 channel = &card->write;
 861                 QETH_DBF_TEXT(TRACE, 5, "write");
 862         } else {
 863                 channel = &card->data;
 864                 QETH_DBF_TEXT(TRACE, 5, "data");
 865         }
 866         atomic_set(&channel->irq_pending, 0);
 867
 868         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 869                 channel->state = CH_STATE_STOPPED;
 870
 871         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 872                 channel->state = CH_STATE_HALTED;
 873
 874         /*let's wake up immediately on data channel*/
 875         if ((channel == &card->data) && (intparm != 0) &&
 876             (intparm != QETH_RCD_PARM))
 877                 goto out;
 878
 879         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 880                 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
 881                 /* we don't have to handle this further */
 882                 intparm = 0;
 883         }
 884         if (intparm == QETH_HALT_CHANNEL_PARM) {
 885                 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
 886                 /* we don't have to handle this further */
 887                 intparm = 0;
 888         }
 889         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 890             (dstat & DEV_STAT_UNIT_CHECK) ||
 891             (cstat)) {
 892                 if (irb->esw.esw0.erw.cons) {
 893                         dev_warn(&channel->ccwdev->dev,
 894                                 "The qeth device driver failed to recover "
 895                                 "an error on the device\n");
 896                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 897                                 "0x%X dstat 0x%X\n",
 898                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 899                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 900                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 901                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 902                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 903                 }
 904                 if (intparm == QETH_RCD_PARM) {
 905                         channel->state = CH_STATE_DOWN;
 906                         goto out;
 907                 }
 908                 rc = qeth_get_problem(cdev, irb);
 909                 if (rc) {
 910                         qeth_clear_ipacmd_list(card);
 911                         qeth_schedule_recovery(card);
 912                         goto out;
 913                 }
 914         }
 915
 916         if (intparm == QETH_RCD_PARM) {
 917                 channel->state = CH_STATE_RCD_DONE;
 918                 goto out;
 919         }
 920         if (intparm) {
 921                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 922                 buffer->state = BUF_STATE_PROCESSED;
 923         }
 924         if (channel == &card->data)
 925                 return;
 926         if (channel == &card->read &&
 927             channel->state == CH_STATE_UP)
 928                 qeth_issue_next_read(card);
 929
 930         iob = channel->iob;
 931         index = channel->buf_no;
 932         while (iob[index].state == BUF_STATE_PROCESSED) {
 933                 if (iob[index].callback != NULL)
 934                         iob[index].callback(channel, iob + index);
 935
 936                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 937         }
 938         channel->buf_no = index;
 939 out:
 940         wake_up(&card->wait_q);
 941         return;
 942 }
 943
 944 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 945                  struct qeth_qdio_out_buffer *buf)
 946 {
 947         int i;
 948         struct sk_buff *skb;
 949
 950         /* is PCI flag set on buffer? */
 951         if (buf->buffer->element[0].flags & 0x40)
 952                 atomic_dec(&queue->set_pci_flags_count);
 953
 954         skb = skb_dequeue(&buf->skb_list);
 955         while (skb) {
 956                 atomic_dec(&skb->users);
 957                 dev_kfree_skb_any(skb);
 958                 skb = skb_dequeue(&buf->skb_list);
 959         }
 960         qeth_eddp_buf_release_contexts(buf);
 961         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 962                 if (buf->buffer->element[i].addr && buf->is_header[i])
 963                         kmem_cache_free(qeth_core_header_cache,
 964                                 buf->buffer->element[i].addr);
 965                 buf->is_header[i] = 0;
 966                 buf->buffer->element[i].length = 0;
 967                 buf->buffer->element[i].addr = NULL;
 968                 buf->buffer->element[i].flags = 0;
 969         }
 970         buf->next_element_to_fill = 0;
 971         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 972 }
 973
 974 void qeth_clear_qdio_buffers(struct qeth_card *card)
 975 {
 976         int i, j;
 977
 978         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 979         /* clear outbound buffers to free skbs */
 980         for (i = 0; i < card->qdio.no_out_queues; ++i)
 981                 if (card->qdio.out_qs[i]) {
 982                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 983                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 984                                                 &card->qdio.out_qs[i]->bufs[j]);
 985                 }
 986 }
 987 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 988
 989 static void qeth_free_buffer_pool(struct qeth_card *card)
 990 {
 991         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 992         int i = 0;
 993         QETH_DBF_TEXT(TRACE, 5, "freepool");
 994         list_for_each_entry_safe(pool_entry, tmp,
 995                                  &card->qdio.init_pool.entry_list, init_list){
 996                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 997                         free_page((unsigned long)pool_entry->elements[i]);
 998                 list_del(&pool_entry->init_list);
 999                 kfree(pool_entry);
1000         }
1001 }
1002
1003 static void qeth_free_qdio_buffers(struct qeth_card *card)
1004 {
1005         int i, j;
1006
1007         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
1008         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1009                 QETH_QDIO_UNINITIALIZED)
1010                 return;
1011         kfree(card->qdio.in_q);
1012         card->qdio.in_q = NULL;
1013         /* inbound buffer pool */
1014         qeth_free_buffer_pool(card);
1015         /* free outbound qdio_qs */
1016         if (card->qdio.out_qs) {
1017                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1018                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1019                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
1020                                                 &card->qdio.out_qs[i]->bufs[j]);
1021                         kfree(card->qdio.out_qs[i]);
1022                 }
1023                 kfree(card->qdio.out_qs);
1024                 card->qdio.out_qs = NULL;
1025         }
1026 }
1027
1028 static void qeth_clean_channel(struct qeth_channel *channel)
1029 {
1030         int cnt;
1031
1032         QETH_DBF_TEXT(SETUP, 2, "freech");
1033         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1034                 kfree(channel->iob[cnt].data);
1035 }
1036
1037 static int qeth_is_1920_device(struct qeth_card *card)
1038 {
1039         int single_queue = 0;
1040         struct ccw_device *ccwdev;
1041         struct channelPath_dsc {
1042                 u8 flags;
1043                 u8 lsn;
1044                 u8 desc;
1045                 u8 chpid;
1046                 u8 swla;
1047                 u8 zeroes;
1048                 u8 chla;
1049                 u8 chpp;
1050         } *chp_dsc;
1051
1052         QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1053
1054         ccwdev = card->data.ccwdev;
1055         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1056         if (chp_dsc != NULL) {
1057                 /* CHPP field bit 6 == 1 -> single queue */
1058                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1059                 kfree(chp_dsc);
1060         }
1061         QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1062         return single_queue;
1063 }
1064
1065 static void qeth_init_qdio_info(struct qeth_card *card)
1066 {
1067         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1068         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1069         /* inbound */
1070         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1071         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1072         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1073         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1074         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1075 }
1076
1077 static void qeth_set_intial_options(struct qeth_card *card)
1078 {
1079         card->options.route4.type = NO_ROUTER;
1080         card->options.route6.type = NO_ROUTER;
1081         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1082         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1083         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1084         card->options.fake_broadcast = 0;
1085         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1086         card->options.performance_stats = 0;
1087         card->options.rx_sg_cb = QETH_RX_SG_CB;
1088 }
1089
1090 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1091 {
1092         unsigned long flags;
1093         int rc = 0;
1094
1095         spin_lock_irqsave(&card->thread_mask_lock, flags);
1096         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1097                         (u8) card->thread_start_mask,
1098                         (u8) card->thread_allowed_mask,
1099                         (u8) card->thread_running_mask);
1100         rc = (card->thread_start_mask & thread);
1101         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1102         return rc;
1103 }
1104
1105 static void qeth_start_kernel_thread(struct work_struct *work)
1106 {
1107         struct qeth_card *card = container_of(work, struct qeth_card,
1108                                         kernel_thread_starter);
1109         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1110
1111         if (card->read.state != CH_STATE_UP &&
1112             card->write.state != CH_STATE_UP)
1113                 return;
1114         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1115                 kthread_run(card->discipline.recover, (void *) card,
1116                                 "qeth_recover");
1117 }
1118
1119 static int qeth_setup_card(struct qeth_card *card)
1120 {
1121
1122         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1123         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1124
1125         card->read.state  = CH_STATE_DOWN;
1126         card->write.state = CH_STATE_DOWN;
1127         card->data.state  = CH_STATE_DOWN;
1128         card->state = CARD_STATE_DOWN;
1129         card->lan_online = 0;
1130         card->use_hard_stop = 0;
1131         card->dev = NULL;
1132         spin_lock_init(&card->vlanlock);
1133         spin_lock_init(&card->mclock);
1134         card->vlangrp = NULL;
1135         spin_lock_init(&card->lock);
1136         spin_lock_init(&card->ip_lock);
1137         spin_lock_init(&card->thread_mask_lock);
1138         card->thread_start_mask = 0;
1139         card->thread_allowed_mask = 0;
1140         card->thread_running_mask = 0;
1141         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1142         INIT_LIST_HEAD(&card->ip_list);
1143         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1144         if (!card->ip_tbd_list) {
1145                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1146                 return -ENOMEM;
1147         }
1148         INIT_LIST_HEAD(card->ip_tbd_list);
1149         INIT_LIST_HEAD(&card->cmd_waiter_list);
1150         init_waitqueue_head(&card->wait_q);
1151         /* intial options */
1152         qeth_set_intial_options(card);
1153         /* IP address takeover */
1154         INIT_LIST_HEAD(&card->ipato.entries);
1155         card->ipato.enabled = 0;
1156         card->ipato.invert4 = 0;
1157         card->ipato.invert6 = 0;
1158         /* init QDIO stuff */
1159         qeth_init_qdio_info(card);
1160         return 0;
1161 }
1162
1163 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1164 {
1165         struct qeth_card *card = container_of(slr, struct qeth_card,
1166                                         qeth_service_level);
1167         seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card),
1168                         card->info.mcl_level);
1169 }
1170
1171 static struct qeth_card *qeth_alloc_card(void)
1172 {
1173         struct qeth_card *card;
1174
1175         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1176         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1177         if (!card)
1178                 return NULL;
1179         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1180         if (qeth_setup_channel(&card->read)) {
1181                 kfree(card);
1182                 return NULL;
1183         }
1184         if (qeth_setup_channel(&card->write)) {
1185                 qeth_clean_channel(&card->read);
1186                 kfree(card);
1187                 return NULL;
1188         }
1189         card->options.layer2 = -1;
1190         card->qeth_service_level.seq_print = qeth_core_sl_print;
1191         register_service_level(&card->qeth_service_level);
1192         return card;
1193 }
1194
1195 static int qeth_determine_card_type(struct qeth_card *card)
1196 {
1197         int i = 0;
1198
1199         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1200
1201         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1202         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1203         while (known_devices[i][4]) {
1204                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1205                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1206                         card->info.type = known_devices[i][4];
1207                         card->qdio.no_out_queues = known_devices[i][8];
1208                         card->info.is_multicast_different = known_devices[i][9];
1209                         if (qeth_is_1920_device(card)) {
1210                                 dev_info(&card->gdev->dev,
1211                                         "Priority Queueing not supported\n");
1212                                 card->qdio.no_out_queues = 1;
1213                                 card->qdio.default_out_queue = 0;
1214                         }
1215                         return 0;
1216                 }
1217                 i++;
1218         }
1219         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1220         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1221                 "unknown type\n");
1222         return -ENOENT;
1223 }
1224
1225 static int qeth_clear_channel(struct qeth_channel *channel)
1226 {
1227         unsigned long flags;
1228         struct qeth_card *card;
1229         int rc;
1230
1231         QETH_DBF_TEXT(TRACE, 3, "clearch");
1232         card = CARD_FROM_CDEV(channel->ccwdev);
1233         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1234         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1235         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1236
1237         if (rc)
1238                 return rc;
1239         rc = wait_event_interruptible_timeout(card->wait_q,
1240                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1241         if (rc == -ERESTARTSYS)
1242                 return rc;
1243         if (channel->state != CH_STATE_STOPPED)
1244                 return -ETIME;
1245         channel->state = CH_STATE_DOWN;
1246         return 0;
1247 }
1248
1249 static int qeth_halt_channel(struct qeth_channel *channel)
1250 {
1251         unsigned long flags;
1252         struct qeth_card *card;
1253         int rc;
1254
1255         QETH_DBF_TEXT(TRACE, 3, "haltch");
1256         card = CARD_FROM_CDEV(channel->ccwdev);
1257         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1258         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1259         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1260
1261         if (rc)
1262                 return rc;
1263         rc = wait_event_interruptible_timeout(card->wait_q,
1264                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1265         if (rc == -ERESTARTSYS)
1266                 return rc;
1267         if (channel->state != CH_STATE_HALTED)
1268                 return -ETIME;
1269         return 0;
1270 }
1271
1272 static int qeth_halt_channels(struct qeth_card *card)
1273 {
1274         int rc1 = 0, rc2 = 0, rc3 = 0;
1275
1276         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1277         rc1 = qeth_halt_channel(&card->read);
1278         rc2 = qeth_halt_channel(&card->write);
1279         rc3 = qeth_halt_channel(&card->data);
1280         if (rc1)
1281                 return rc1;
1282         if (rc2)
1283                 return rc2;
1284         return rc3;
1285 }
1286
1287 static int qeth_clear_channels(struct qeth_card *card)
1288 {
1289         int rc1 = 0, rc2 = 0, rc3 = 0;
1290
1291         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1292         rc1 = qeth_clear_channel(&card->read);
1293         rc2 = qeth_clear_channel(&card->write);
1294         rc3 = qeth_clear_channel(&card->data);
1295         if (rc1)
1296                 return rc1;
1297         if (rc2)
1298                 return rc2;
1299         return rc3;
1300 }
1301
1302 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1303 {
1304         int rc = 0;
1305
1306         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1307         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1308
1309         if (halt)
1310                 rc = qeth_halt_channels(card);
1311         if (rc)
1312                 return rc;
1313         return qeth_clear_channels(card);
1314 }
1315
1316 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1317 {
1318         int rc = 0;
1319
1320         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1321         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1322                 QETH_QDIO_CLEANING)) {
1323         case QETH_QDIO_ESTABLISHED:
1324                 if (card->info.type == QETH_CARD_TYPE_IQD)
1325                         rc = qdio_cleanup(CARD_DDEV(card),
1326                                 QDIO_FLAG_CLEANUP_USING_HALT);
1327                 else
1328                         rc = qdio_cleanup(CARD_DDEV(card),
1329                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1330                 if (rc)
1331                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1332                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1333                 break;
1334         case QETH_QDIO_CLEANING:
1335                 return rc;
1336         default:
1337                 break;
1338         }
1339         rc = qeth_clear_halt_card(card, use_halt);
1340         if (rc)
1341                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1342         card->state = CARD_STATE_DOWN;
1343         return rc;
1344 }
1345 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1346
1347 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1348                                int *length)
1349 {
1350         struct ciw *ciw;
1351         char *rcd_buf;
1352         int ret;
1353         struct qeth_channel *channel = &card->data;
1354         unsigned long flags;
1355
1356         /*
1357          * scan for RCD command in extended SenseID data
1358          */
1359         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1360         if (!ciw || ciw->cmd == 0)
1361                 return -EOPNOTSUPP;
1362         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1363         if (!rcd_buf)
1364                 return -ENOMEM;
1365
1366         channel->ccw.cmd_code = ciw->cmd;
1367         channel->ccw.cda = (__u32) __pa(rcd_buf);
1368         channel->ccw.count = ciw->count;
1369         channel->ccw.flags = CCW_FLAG_SLI;
1370         channel->state = CH_STATE_RCD;
1371         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1372         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1373                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1374                                        QETH_RCD_TIMEOUT);
1375         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1376         if (!ret)
1377                 wait_event(card->wait_q,
1378                            (channel->state == CH_STATE_RCD_DONE ||
1379                             channel->state == CH_STATE_DOWN));
1380         if (channel->state == CH_STATE_DOWN)
1381                 ret = -EIO;
1382         else
1383                 channel->state = CH_STATE_DOWN;
1384         if (ret) {
1385                 kfree(rcd_buf);
1386                 *buffer = NULL;
1387                 *length = 0;
1388         } else {
1389                 *length = ciw->count;
1390                 *buffer = rcd_buf;
1391         }
1392         return ret;
1393 }
1394
1395 static int qeth_get_unitaddr(struct qeth_card *card)
1396 {
1397         int length;
1398         char *prcd;
1399         int rc;
1400
1401         QETH_DBF_TEXT(SETUP, 2, "getunit");
1402         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1403         if (rc) {
1404                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
1405                         dev_name(&card->gdev->dev), rc);
1406                 return rc;
1407         }
1408         card->info.chpid = prcd[30];
1409         card->info.unit_addr2 = prcd[31];
1410         card->info.cula = prcd[63];
1411         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1412                                (prcd[0x11] == _ascebc['M']));
1413         kfree(prcd);
1414         return 0;
1415 }
1416
1417 static void qeth_init_tokens(struct qeth_card *card)
1418 {
1419         card->token.issuer_rm_w = 0x00010103UL;
1420         card->token.cm_filter_w = 0x00010108UL;
1421         card->token.cm_connection_w = 0x0001010aUL;
1422         card->token.ulp_filter_w = 0x0001010bUL;
1423         card->token.ulp_connection_w = 0x0001010dUL;
1424 }
1425
1426 static void qeth_init_func_level(struct qeth_card *card)
1427 {
1428         if (card->ipato.enabled) {
1429                 if (card->info.type == QETH_CARD_TYPE_IQD)
1430                                 card->info.func_level =
1431                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1432                 else
1433                                 card->info.func_level =
1434                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1435         } else {
1436                 if (card->info.type == QETH_CARD_TYPE_IQD)
1437                 /*FIXME:why do we have same values for  dis and ena for
1438                   osae??? */
1439                         card->info.func_level =
1440                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1441                 else
1442                         card->info.func_level =
1443                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1444         }
1445 }
1446
1447 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1448                 void (*idx_reply_cb)(struct qeth_channel *,
1449                         struct qeth_cmd_buffer *))
1450 {
1451         struct qeth_cmd_buffer *iob;
1452         unsigned long flags;
1453         int rc;
1454         struct qeth_card *card;
1455
1456         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1457         card = CARD_FROM_CDEV(channel->ccwdev);
1458         iob = qeth_get_buffer(channel);
1459         iob->callback = idx_reply_cb;
1460         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1461         channel->ccw.count = QETH_BUFSIZE;
1462         channel->ccw.cda = (__u32) __pa(iob->data);
1463
1464         wait_event(card->wait_q,
1465                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1466         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1467         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1468         rc = ccw_device_start(channel->ccwdev,
1469                               &channel->ccw, (addr_t) iob, 0, 0);
1470         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1471
1472         if (rc) {
1473                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1474                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1475                 atomic_set(&channel->irq_pending, 0);
1476                 wake_up(&card->wait_q);
1477                 return rc;
1478         }
1479         rc = wait_event_interruptible_timeout(card->wait_q,
1480                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1481         if (rc == -ERESTARTSYS)
1482                 return rc;
1483         if (channel->state != CH_STATE_UP) {
1484                 rc = -ETIME;
1485                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1486                 qeth_clear_cmd_buffers(channel);
1487         } else
1488                 rc = 0;
1489         return rc;
1490 }
1491
1492 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1493                 void (*idx_reply_cb)(struct qeth_channel *,
1494                         struct qeth_cmd_buffer *))
1495 {
1496         struct qeth_card *card;
1497         struct qeth_cmd_buffer *iob;
1498         unsigned long flags;
1499         __u16 temp;
1500         __u8 tmp;
1501         int rc;
1502         struct ccw_dev_id temp_devid;
1503
1504         card = CARD_FROM_CDEV(channel->ccwdev);
1505
1506         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1507
1508         iob = qeth_get_buffer(channel);
1509         iob->callback = idx_reply_cb;
1510         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1511         channel->ccw.count = IDX_ACTIVATE_SIZE;
1512         channel->ccw.cda = (__u32) __pa(iob->data);
1513         if (channel == &card->write) {
1514                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1515                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1516                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1517                 card->seqno.trans_hdr++;
1518         } else {
1519                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1520                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1521                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1522         }
1523         tmp = ((__u8)card->info.portno) | 0x80;
1524         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1525         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1526                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1527         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1528                &card->info.func_level, sizeof(__u16));
1529         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1530         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1531         temp = (card->info.cula << 8) + card->info.unit_addr2;
1532         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1533
1534         wait_event(card->wait_q,
1535                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1536         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1537         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1538         rc = ccw_device_start(channel->ccwdev,
1539                               &channel->ccw, (addr_t) iob, 0, 0);
1540         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1541
1542         if (rc) {
1543                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1544                         rc);
1545                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1546                 atomic_set(&channel->irq_pending, 0);
1547                 wake_up(&card->wait_q);
1548                 return rc;
1549         }
1550         rc = wait_event_interruptible_timeout(card->wait_q,
1551                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1552         if (rc == -ERESTARTSYS)
1553                 return rc;
1554         if (channel->state != CH_STATE_ACTIVATING) {
1555                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1556                         " failed to recover an error on the device\n");
1557                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1558                         dev_name(&channel->ccwdev->dev));
1559                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1560                 qeth_clear_cmd_buffers(channel);
1561                 return -ETIME;
1562         }
1563         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1564 }
1565
1566 static int qeth_peer_func_level(int level)
1567 {
1568         if ((level & 0xff) == 8)
1569                 return (level & 0xff) + 0x400;
1570         if (((level >> 8) & 3) == 1)
1571                 return (level & 0xff) + 0x200;
1572         return level;
1573 }
1574
1575 static void qeth_idx_write_cb(struct qeth_channel *channel,
1576                 struct qeth_cmd_buffer *iob)
1577 {
1578         struct qeth_card *card;
1579         __u16 temp;
1580
1581         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1582
1583         if (channel->state == CH_STATE_DOWN) {
1584                 channel->state = CH_STATE_ACTIVATING;
1585                 goto out;
1586         }
1587         card = CARD_FROM_CDEV(channel->ccwdev);
1588
1589         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1590                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1591                         dev_err(&card->write.ccwdev->dev,
1592                                 "The adapter is used exclusively by another "
1593                                 "host\n");
1594                 else
1595                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1596                                 " negative reply\n",
1597                                 dev_name(&card->write.ccwdev->dev));
1598                 goto out;
1599         }
1600         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1601         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1602                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1603                         "function level mismatch (sent: 0x%x, received: "
1604                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1605                         card->info.func_level, temp);
1606                 goto out;
1607         }
1608         channel->state = CH_STATE_UP;
1609 out:
1610         qeth_release_buffer(channel, iob);
1611 }
1612
1613 static void qeth_idx_read_cb(struct qeth_channel *channel,
1614                 struct qeth_cmd_buffer *iob)
1615 {
1616         struct qeth_card *card;
1617         __u16 temp;
1618
1619         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1620         if (channel->state == CH_STATE_DOWN) {
1621                 channel->state = CH_STATE_ACTIVATING;
1622                 goto out;
1623         }
1624
1625         card = CARD_FROM_CDEV(channel->ccwdev);
1626         if (qeth_check_idx_response(iob->data))
1627                         goto out;
1628
1629         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1630                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1631                         dev_err(&card->write.ccwdev->dev,
1632                                 "The adapter is used exclusively by another "
1633                                 "host\n");
1634                 else
1635                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1636                                 " negative reply\n",
1637                                 dev_name(&card->read.ccwdev->dev));
1638                 goto out;
1639         }
1640
1641 /**
1642  * temporary fix for microcode bug
1643  * to revert it,replace OR by AND
1644  */
1645         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1646              (card->info.type == QETH_CARD_TYPE_OSAE))
1647                 card->info.portname_required = 1;
1648
1649         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1650         if (temp != qeth_peer_func_level(card->info.func_level)) {
1651                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1652                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1653                         dev_name(&card->read.ccwdev->dev),
1654                         card->info.func_level, temp);
1655                 goto out;
1656         }
1657         memcpy(&card->token.issuer_rm_r,
1658                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1659                QETH_MPC_TOKEN_LENGTH);
1660         memcpy(&card->info.mcl_level[0],
1661                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1662         channel->state = CH_STATE_UP;
1663 out:
1664         qeth_release_buffer(channel, iob);
1665 }
1666
1667 void qeth_prepare_control_data(struct qeth_card *card, int len,
1668                 struct qeth_cmd_buffer *iob)
1669 {
1670         qeth_setup_ccw(&card->write, iob->data, len);
1671         iob->callback = qeth_release_buffer;
1672
1673         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1674                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1675         card->seqno.trans_hdr++;
1676         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1677                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1678         card->seqno.pdu_hdr++;
1679         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1680                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1681         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1682 }
1683 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1684
1685 int qeth_send_control_data(struct qeth_card *card, int len,
1686                 struct qeth_cmd_buffer *iob,
1687                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1688                         unsigned long),
1689                 void *reply_param)
1690 {
1691         int rc;
1692         unsigned long flags;
1693         struct qeth_reply *reply = NULL;
1694         unsigned long timeout;
1695         struct qeth_ipa_cmd *cmd;
1696
1697         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1698
1699         reply = qeth_alloc_reply(card);
1700         if (!reply) {
1701                 return -ENOMEM;
1702         }
1703         reply->callback = reply_cb;
1704         reply->param = reply_param;
1705         if (card->state == CARD_STATE_DOWN)
1706                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1707         else
1708                 reply->seqno = card->seqno.ipa++;
1709         init_waitqueue_head(&reply->wait_q);
1710         spin_lock_irqsave(&card->lock, flags);
1711         list_add_tail(&reply->list, &card->cmd_waiter_list);
1712         spin_unlock_irqrestore(&card->lock, flags);
1713         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1714
1715         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1716         qeth_prepare_control_data(card, len, iob);
1717
1718         if (IS_IPA(iob->data))
1719                 timeout = jiffies + QETH_IPA_TIMEOUT;
1720         else
1721                 timeout = jiffies + QETH_TIMEOUT;
1722
1723         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1724         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1725         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1726                               (addr_t) iob, 0, 0);
1727         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1728         if (rc) {
1729                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1730                         "ccw_device_start rc = %i\n",
1731                         dev_name(&card->write.ccwdev->dev), rc);
1732                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1733                 spin_lock_irqsave(&card->lock, flags);
1734                 list_del_init(&reply->list);
1735                 qeth_put_reply(reply);
1736                 spin_unlock_irqrestore(&card->lock, flags);
1737                 qeth_release_buffer(iob->channel, iob);
1738                 atomic_set(&card->write.irq_pending, 0);
1739                 wake_up(&card->wait_q);
1740                 return rc;
1741         }
1742
1743         /* we have only one long running ipassist, since we can ensure
1744            process context of this command we can sleep */
1745         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1746         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1747             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1748                 if (!wait_event_timeout(reply->wait_q,
1749                     atomic_read(&reply->received), timeout))
1750                         goto time_err;
1751         } else {
1752                 while (!atomic_read(&reply->received)) {
1753                         if (time_after(jiffies, timeout))
1754                                 goto time_err;
1755                         cpu_relax();
1756                 };
1757         }
1758
1759         rc = reply->rc;
1760         qeth_put_reply(reply);
1761         return rc;
1762
1763 time_err:
1764         spin_lock_irqsave(&reply->card->lock, flags);
1765         list_del_init(&reply->list);
1766         spin_unlock_irqrestore(&reply->card->lock, flags);
1767         reply->rc = -ETIME;
1768         atomic_inc(&reply->received);
1769         wake_up(&reply->wait_q);
1770         rc = reply->rc;
1771         qeth_put_reply(reply);
1772         return rc;
1773 }
1774 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1775
1776 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1777                 unsigned long data)
1778 {
1779         struct qeth_cmd_buffer *iob;
1780
1781         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1782
1783         iob = (struct qeth_cmd_buffer *) data;
1784         memcpy(&card->token.cm_filter_r,
1785                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1786                QETH_MPC_TOKEN_LENGTH);
1787         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1788         return 0;
1789 }
1790
1791 static int qeth_cm_enable(struct qeth_card *card)
1792 {
1793         int rc;
1794         struct qeth_cmd_buffer *iob;
1795
1796         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1797
1798         iob = qeth_wait_for_buffer(&card->write);
1799         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1800         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1801                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1802         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1803                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1804
1805         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1806                                     qeth_cm_enable_cb, NULL);
1807         return rc;
1808 }
1809
1810 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1811                 unsigned long data)
1812 {
1813
1814         struct qeth_cmd_buffer *iob;
1815
1816         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1817
1818         iob = (struct qeth_cmd_buffer *) data;
1819         memcpy(&card->token.cm_connection_r,
1820                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1821                QETH_MPC_TOKEN_LENGTH);
1822         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1823         return 0;
1824 }
1825
1826 static int qeth_cm_setup(struct qeth_card *card)
1827 {
1828         int rc;
1829         struct qeth_cmd_buffer *iob;
1830
1831         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1832
1833         iob = qeth_wait_for_buffer(&card->write);
1834         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1835         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1836                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1837         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1838                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1839         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1840                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1841         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1842                                     qeth_cm_setup_cb, NULL);
1843         return rc;
1844
1845 }
1846
1847 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1848 {
1849         switch (card->info.type) {
1850         case QETH_CARD_TYPE_UNKNOWN:
1851                 return 1500;
1852         case QETH_CARD_TYPE_IQD:
1853                 return card->info.max_mtu;
1854         case QETH_CARD_TYPE_OSAE:
1855                 switch (card->info.link_type) {
1856                 case QETH_LINK_TYPE_HSTR:
1857                 case QETH_LINK_TYPE_LANE_TR:
1858                         return 2000;
1859                 default:
1860                         return 1492;
1861                 }
1862         default:
1863                 return 1500;
1864         }
1865 }
1866
1867 static inline int qeth_get_max_mtu_for_card(int cardtype)
1868 {
1869         switch (cardtype) {
1870
1871         case QETH_CARD_TYPE_UNKNOWN:
1872         case QETH_CARD_TYPE_OSAE:
1873         case QETH_CARD_TYPE_OSN:
1874                 return 61440;
1875         case QETH_CARD_TYPE_IQD:
1876                 return 57344;
1877         default:
1878                 return 1500;
1879         }
1880 }
1881
1882 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1883 {
1884         switch (cardtype) {
1885         case QETH_CARD_TYPE_IQD:
1886                 return 1;
1887         default:
1888                 return 0;
1889         }
1890 }
1891
1892 static inline int qeth_get_mtu_outof_framesize(int framesize)
1893 {
1894         switch (framesize) {
1895         case 0x4000:
1896                 return 8192;
1897         case 0x6000:
1898                 return 16384;
1899         case 0xa000:
1900                 return 32768;
1901         case 0xffff:
1902                 return 57344;
1903         default:
1904                 return 0;
1905         }
1906 }
1907
1908 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1909 {
1910         switch (card->info.type) {
1911         case QETH_CARD_TYPE_OSAE:
1912                 return ((mtu >= 576) && (mtu <= 61440));
1913         case QETH_CARD_TYPE_IQD:
1914                 return ((mtu >= 576) &&
1915                         (mtu <= card->info.max_mtu + 4096 - 32));
1916         case QETH_CARD_TYPE_OSN:
1917         case QETH_CARD_TYPE_UNKNOWN:
1918         default:
1919                 return 1;
1920         }
1921 }
1922
1923 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1924                 unsigned long data)
1925 {
1926
1927         __u16 mtu, framesize;
1928         __u16 len;
1929         __u8 link_type;
1930         struct qeth_cmd_buffer *iob;
1931
1932         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1933
1934         iob = (struct qeth_cmd_buffer *) data;
1935         memcpy(&card->token.ulp_filter_r,
1936                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1937                QETH_MPC_TOKEN_LENGTH);
1938         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1939                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1940                 mtu = qeth_get_mtu_outof_framesize(framesize);
1941                 if (!mtu) {
1942                         iob->rc = -EINVAL;
1943                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1944                         return 0;
1945                 }
1946                 card->info.max_mtu = mtu;
1947                 card->info.initial_mtu = mtu;
1948                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1949         } else {
1950                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1951                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1952                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1953         }
1954
1955         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1956         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1957                 memcpy(&link_type,
1958                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1959                 card->info.link_type = link_type;
1960         } else
1961                 card->info.link_type = 0;
1962         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1963         return 0;
1964 }
1965
1966 static int qeth_ulp_enable(struct qeth_card *card)
1967 {
1968         int rc;
1969         char prot_type;
1970         struct qeth_cmd_buffer *iob;
1971
1972         /*FIXME: trace view callbacks*/
1973         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1974
1975         iob = qeth_wait_for_buffer(&card->write);
1976         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1977
1978         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1979                 (__u8) card->info.portno;
1980         if (card->options.layer2)
1981                 if (card->info.type == QETH_CARD_TYPE_OSN)
1982                         prot_type = QETH_PROT_OSN2;
1983                 else
1984                         prot_type = QETH_PROT_LAYER2;
1985         else
1986                 prot_type = QETH_PROT_TCPIP;
1987
1988         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1989         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1990                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1991         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1992                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1993         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1994                card->info.portname, 9);
1995         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1996                                     qeth_ulp_enable_cb, NULL);
1997         return rc;
1998
1999 }
2000
2001 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2002                 unsigned long data)
2003 {
2004         struct qeth_cmd_buffer *iob;
2005
2006         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2007
2008         iob = (struct qeth_cmd_buffer *) data;
2009         memcpy(&card->token.ulp_connection_r,
2010                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2011                QETH_MPC_TOKEN_LENGTH);
2012         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2013         return 0;
2014 }
2015
2016 static int qeth_ulp_setup(struct qeth_card *card)
2017 {
2018         int rc;
2019         __u16 temp;
2020         struct qeth_cmd_buffer *iob;
2021         struct ccw_dev_id dev_id;
2022
2023         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2024
2025         iob = qeth_wait_for_buffer(&card->write);
2026         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2027
2028         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2029                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2030         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2031                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2032         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2033                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2034
2035         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2036         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2037         temp = (card->info.cula << 8) + card->info.unit_addr2;
2038         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2039         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2040                                     qeth_ulp_setup_cb, NULL);
2041         return rc;
2042 }
2043
2044 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2045 {
2046         int i, j;
2047
2048         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2049
2050         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2051                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2052                 return 0;
2053
2054         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2055                                   GFP_KERNEL);
2056         if (!card->qdio.in_q)
2057                 goto out_nomem;
2058         QETH_DBF_TEXT(SETUP, 2, "inq");
2059         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2060         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2061         /* give inbound qeth_qdio_buffers their qdio_buffers */
2062         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2063                 card->qdio.in_q->bufs[i].buffer =
2064                         &card->qdio.in_q->qdio_bufs[i];
2065         /* inbound buffer pool */
2066         if (qeth_alloc_buffer_pool(card))
2067                 goto out_freeinq;
2068         /* outbound */
2069         card->qdio.out_qs =
2070                 kmalloc(card->qdio.no_out_queues *
2071                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2072         if (!card->qdio.out_qs)
2073                 goto out_freepool;
2074         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2075                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2076                                                GFP_KERNEL);
2077                 if (!card->qdio.out_qs[i])
2078                         goto out_freeoutq;
2079                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2080                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2081                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2082                 card->qdio.out_qs[i]->queue_no = i;
2083                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2084                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2085                         card->qdio.out_qs[i]->bufs[j].buffer =
2086                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2087                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2088                                             skb_list);
2089                         lockdep_set_class(
2090                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2091                                 &qdio_out_skb_queue_key);
2092                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2093                 }
2094         }
2095         return 0;
2096
2097 out_freeoutq:
2098         while (i > 0)
2099                 kfree(card->qdio.out_qs[--i]);
2100         kfree(card->qdio.out_qs);
2101         card->qdio.out_qs = NULL;
2102 out_freepool:
2103         qeth_free_buffer_pool(card);
2104 out_freeinq:
2105         kfree(card->qdio.in_q);
2106         card->qdio.in_q = NULL;
2107 out_nomem:
2108         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2109         return -ENOMEM;
2110 }
2111
2112 static void qeth_create_qib_param_field(struct qeth_card *card,
2113                 char *param_field)
2114 {
2115
2116         param_field[0] = _ascebc['P'];
2117         param_field[1] = _ascebc['C'];
2118         param_field[2] = _ascebc['I'];
2119         param_field[3] = _ascebc['T'];
2120         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2121         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2122         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2123 }
2124
2125 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2126                 char *param_field)
2127 {
2128         param_field[16] = _ascebc['B'];
2129         param_field[17] = _ascebc['L'];
2130         param_field[18] = _ascebc['K'];
2131         param_field[19] = _ascebc['T'];
2132         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2133         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2134         *((unsigned int *) (&param_field[28])) =
2135                 card->info.blkt.inter_packet_jumbo;
2136 }
2137
2138 static int qeth_qdio_activate(struct qeth_card *card)
2139 {
2140         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2141         return qdio_activate(CARD_DDEV(card));
2142 }
2143
2144 static int qeth_dm_act(struct qeth_card *card)
2145 {
2146         int rc;
2147         struct qeth_cmd_buffer *iob;
2148
2149         QETH_DBF_TEXT(SETUP, 2, "dmact");
2150
2151         iob = qeth_wait_for_buffer(&card->write);
2152         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2153
2154         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2155                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2156         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2157                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2158         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2159         return rc;
2160 }
2161
2162 static int qeth_mpc_initialize(struct qeth_card *card)
2163 {
2164         int rc;
2165
2166         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2167
2168         rc = qeth_issue_next_read(card);
2169         if (rc) {
2170                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2171                 return rc;
2172         }
2173         rc = qeth_cm_enable(card);
2174         if (rc) {
2175                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2176                 goto out_qdio;
2177         }
2178         rc = qeth_cm_setup(card);
2179         if (rc) {
2180                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2181                 goto out_qdio;
2182         }
2183         rc = qeth_ulp_enable(card);
2184         if (rc) {
2185                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2186                 goto out_qdio;
2187         }
2188         rc = qeth_ulp_setup(card);
2189         if (rc) {
2190                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2191                 goto out_qdio;
2192         }
2193         rc = qeth_alloc_qdio_buffers(card);
2194         if (rc) {
2195                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2196                 goto out_qdio;
2197         }
2198         rc = qeth_qdio_establish(card);
2199         if (rc) {
2200                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2201                 qeth_free_qdio_buffers(card);
2202                 goto out_qdio;
2203         }
2204         rc = qeth_qdio_activate(card);
2205         if (rc) {
2206                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2207                 goto out_qdio;
2208         }
2209         rc = qeth_dm_act(card);
2210         if (rc) {
2211                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2212                 goto out_qdio;
2213         }
2214
2215         return 0;
2216 out_qdio:
2217         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2218         return rc;
2219 }
2220
2221 static void qeth_print_status_with_portname(struct qeth_card *card)
2222 {
2223         char dbf_text[15];
2224         int i;
2225
2226         sprintf(dbf_text, "%s", card->info.portname + 1);
2227         for (i = 0; i < 8; i++)
2228                 dbf_text[i] =
2229                         (char) _ebcasc[(__u8) dbf_text[i]];
2230         dbf_text[8] = 0;
2231         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2232                "with link type %s (portname: %s)\n",
2233                qeth_get_cardname(card),
2234                (card->info.mcl_level[0]) ? " (level: " : "",
2235                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2236                (card->info.mcl_level[0]) ? ")" : "",
2237                qeth_get_cardname_short(card),
2238                dbf_text);
2239
2240 }
2241
2242 static void qeth_print_status_no_portname(struct qeth_card *card)
2243 {
2244         if (card->info.portname[0])
2245                 dev_info(&card->gdev->dev, "Device is a%s "
2246                        "card%s%s%s\nwith link type %s "
2247                        "(no portname needed by interface).\n",
2248                        qeth_get_cardname(card),
2249                        (card->info.mcl_level[0]) ? " (level: " : "",
2250                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2251                        (card->info.mcl_level[0]) ? ")" : "",
2252                        qeth_get_cardname_short(card));
2253         else
2254                 dev_info(&card->gdev->dev, "Device is a%s "
2255                        "card%s%s%s\nwith link type %s.\n",
2256                        qeth_get_cardname(card),
2257                        (card->info.mcl_level[0]) ? " (level: " : "",
2258                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2259                        (card->info.mcl_level[0]) ? ")" : "",
2260                        qeth_get_cardname_short(card));
2261 }
2262
2263 void qeth_print_status_message(struct qeth_card *card)
2264 {
2265         switch (card->info.type) {
2266         case QETH_CARD_TYPE_OSAE:
2267                 /* VM will use a non-zero first character
2268                  * to indicate a HiperSockets like reporting
2269                  * of the level OSA sets the first character to zero
2270                  * */
2271                 if (!card->info.mcl_level[0]) {
2272                         sprintf(card->info.mcl_level, "%02x%02x",
2273                                 card->info.mcl_level[2],
2274                                 card->info.mcl_level[3]);
2275
2276                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2277                         break;
2278                 }
2279                 /* fallthrough */
2280         case QETH_CARD_TYPE_IQD:
2281                 if ((card->info.guestlan) ||
2282                     (card->info.mcl_level[0] & 0x80)) {
2283                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2284                                 card->info.mcl_level[0]];
2285                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2286                                 card->info.mcl_level[1]];
2287                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2288                                 card->info.mcl_level[2]];
2289                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2290                                 card->info.mcl_level[3]];
2291                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2292                 }
2293                 break;
2294         default:
2295                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2296         }
2297         if (card->info.portname_required)
2298                 qeth_print_status_with_portname(card);
2299         else
2300                 qeth_print_status_no_portname(card);
2301 }
2302 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2303
2304 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2305 {
2306         struct qeth_buffer_pool_entry *entry;
2307
2308         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2309
2310         list_for_each_entry(entry,
2311                             &card->qdio.init_pool.entry_list, init_list) {
2312                 qeth_put_buffer_pool_entry(card, entry);
2313         }
2314 }
2315
2316 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2317                 struct qeth_card *card)
2318 {
2319         struct list_head *plh;
2320         struct qeth_buffer_pool_entry *entry;
2321         int i, free;
2322         struct page *page;
2323
2324         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2325                 return NULL;
2326
2327         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2328                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2329                 free = 1;
2330                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2331                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2332                                 free = 0;
2333                                 break;
2334                         }
2335                 }
2336                 if (free) {
2337                         list_del_init(&entry->list);
2338                         return entry;
2339                 }
2340         }
2341
2342         /* no free buffer in pool so take first one and swap pages */
2343         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2344                         struct qeth_buffer_pool_entry, list);
2345         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2346                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2347                         page = alloc_page(GFP_ATOMIC);
2348                         if (!page) {
2349                                 return NULL;
2350                         } else {
2351                                 free_page((unsigned long)entry->elements[i]);
2352                                 entry->elements[i] = page_address(page);
2353                                 if (card->options.performance_stats)
2354                                         card->perf_stats.sg_alloc_page_rx++;
2355                         }
2356                 }
2357         }
2358         list_del_init(&entry->list);
2359         return entry;
2360 }
2361
2362 static int qeth_init_input_buffer(struct qeth_card *card,
2363                 struct qeth_qdio_buffer *buf)
2364 {
2365         struct qeth_buffer_pool_entry *pool_entry;
2366         int i;
2367
2368         pool_entry = qeth_find_free_buffer_pool_entry(card);
2369         if (!pool_entry)
2370                 return 1;
2371
2372         /*
2373          * since the buffer is accessed only from the input_tasklet
2374          * there shouldn't be a need to synchronize; also, since we use
2375          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2376          * buffers
2377          */
2378
2379         buf->pool_entry = pool_entry;
2380         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2381                 buf->buffer->element[i].length = PAGE_SIZE;
2382                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2383                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2384                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2385                 else
2386                         buf->buffer->element[i].flags = 0;
2387         }
2388         return 0;
2389 }
2390
2391 int qeth_init_qdio_queues(struct qeth_card *card)
2392 {
2393         int i, j;
2394         int rc;
2395
2396         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2397
2398         /* inbound queue */
2399         memset(card->qdio.in_q->qdio_bufs, 0,
2400                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2401         qeth_initialize_working_pool_list(card);
2402         /*give only as many buffers to hardware as we have buffer pool entries*/
2403         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2404                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2405         card->qdio.in_q->next_buf_to_init =
2406                 card->qdio.in_buf_pool.buf_count - 1;
2407         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2408                      card->qdio.in_buf_pool.buf_count - 1);
2409         if (rc) {
2410                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2411                 return rc;
2412         }
2413         /* outbound queue */
2414         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2415                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2416                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2417                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2418                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2419                                         &card->qdio.out_qs[i]->bufs[j]);
2420                 }
2421                 card->qdio.out_qs[i]->card = card;
2422                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2423                 card->qdio.out_qs[i]->do_pack = 0;
2424                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2425                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2426                 atomic_set(&card->qdio.out_qs[i]->state,
2427                            QETH_OUT_Q_UNLOCKED);
2428         }
2429         return 0;
2430 }
2431 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2432
2433 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2434 {
2435         switch (link_type) {
2436         case QETH_LINK_TYPE_HSTR:
2437                 return 2;
2438         default:
2439                 return 1;
2440         }
2441 }
2442
2443 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2444                 struct qeth_ipa_cmd *cmd, __u8 command,
2445                 enum qeth_prot_versions prot)
2446 {
2447         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2448         cmd->hdr.command = command;
2449         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2450         cmd->hdr.seqno = card->seqno.ipa;
2451         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2452         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2453         if (card->options.layer2)
2454                 cmd->hdr.prim_version_no = 2;
2455         else
2456                 cmd->hdr.prim_version_no = 1;
2457         cmd->hdr.param_count = 1;
2458         cmd->hdr.prot_version = prot;
2459         cmd->hdr.ipa_supported = 0;
2460         cmd->hdr.ipa_enabled = 0;
2461 }
2462
2463 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2464                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2465 {
2466         struct qeth_cmd_buffer *iob;
2467         struct qeth_ipa_cmd *cmd;
2468
2469         iob = qeth_wait_for_buffer(&card->write);
2470         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2471         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2472
2473         return iob;
2474 }
2475 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2476
2477 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2478                 char prot_type)
2479 {
2480         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2481         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2482         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2483                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2484 }
2485 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2486
2487 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2488                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2489                         unsigned long),
2490                 void *reply_param)
2491 {
2492         int rc;
2493         char prot_type;
2494
2495         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2496
2497         if (card->options.layer2)
2498                 if (card->info.type == QETH_CARD_TYPE_OSN)
2499                         prot_type = QETH_PROT_OSN2;
2500                 else
2501                         prot_type = QETH_PROT_LAYER2;
2502         else
2503                 prot_type = QETH_PROT_TCPIP;
2504         qeth_prepare_ipa_cmd(card, iob, prot_type);
2505         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2506                                                 iob, reply_cb, reply_param);
2507         return rc;
2508 }
2509 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2510
2511 static int qeth_send_startstoplan(struct qeth_card *card,
2512                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2513 {
2514         int rc;
2515         struct qeth_cmd_buffer *iob;
2516
2517         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2518         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2519
2520         return rc;
2521 }
2522
2523 int qeth_send_startlan(struct qeth_card *card)
2524 {
2525         int rc;
2526
2527         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2528
2529         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2530         return rc;
2531 }
2532 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2533
2534 int qeth_send_stoplan(struct qeth_card *card)
2535 {
2536         int rc = 0;
2537
2538         /*
2539          * TODO: according to the IPA format document page 14,
2540          * TCP/IP (we!) never issue a STOPLAN
2541          * is this right ?!?
2542          */
2543         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2544
2545         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2546         return rc;
2547 }
2548 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2549
2550 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2551                 struct qeth_reply *reply, unsigned long data)
2552 {
2553         struct qeth_ipa_cmd *cmd;
2554
2555         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2556
2557         cmd = (struct qeth_ipa_cmd *) data;
2558         if (cmd->hdr.return_code == 0)
2559                 cmd->hdr.return_code =
2560                         cmd->data.setadapterparms.hdr.return_code;
2561         return 0;
2562 }
2563 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2564
2565 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2566                 struct qeth_reply *reply, unsigned long data)
2567 {
2568         struct qeth_ipa_cmd *cmd;
2569
2570         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2571
2572         cmd = (struct qeth_ipa_cmd *) data;
2573         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2574                 card->info.link_type =
2575                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2576         card->options.adp.supported_funcs =
2577                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2578         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2579 }
2580
2581 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2582                 __u32 command, __u32 cmdlen)
2583 {
2584         struct qeth_cmd_buffer *iob;
2585         struct qeth_ipa_cmd *cmd;
2586
2587         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2588                                      QETH_PROT_IPV4);
2589         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2590         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2591         cmd->data.setadapterparms.hdr.command_code = command;
2592         cmd->data.setadapterparms.hdr.used_total = 1;
2593         cmd->data.setadapterparms.hdr.seq_no = 1;
2594
2595         return iob;
2596 }
2597 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2598
2599 int qeth_query_setadapterparms(struct qeth_card *card)
2600 {
2601         int rc;
2602         struct qeth_cmd_buffer *iob;
2603
2604         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2605         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2606                                    sizeof(struct qeth_ipacmd_setadpparms));
2607         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2608         return rc;
2609 }
2610 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2611
2612 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2613                 const char *dbftext)
2614 {
2615         if (qdio_error) {
2616                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2617                 QETH_DBF_TEXT(QERR, 2, dbftext);
2618                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2619                                buf->element[15].flags & 0xff);
2620                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2621                                buf->element[14].flags & 0xff);
2622                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2623                 return 1;
2624         }
2625         return 0;
2626 }
2627 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2628
2629 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2630 {
2631         struct qeth_qdio_q *queue = card->qdio.in_q;
2632         int count;
2633         int i;
2634         int rc;
2635         int newcount = 0;
2636
2637         count = (index < queue->next_buf_to_init)?
2638                 card->qdio.in_buf_pool.buf_count -
2639                 (queue->next_buf_to_init - index) :
2640                 card->qdio.in_buf_pool.buf_count -
2641                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2642         /* only requeue at a certain threshold to avoid SIGAs */
2643         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2644                 for (i = queue->next_buf_to_init;
2645                      i < queue->next_buf_to_init + count; ++i) {
2646                         if (qeth_init_input_buffer(card,
2647                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2648                                 break;
2649                         } else {
2650                                 newcount++;
2651                         }
2652                 }
2653
2654                 if (newcount < count) {
2655                         /* we are in memory shortage so we switch back to
2656                            traditional skb allocation and drop packages */
2657                         atomic_set(&card->force_alloc_skb, 3);
2658                         count = newcount;
2659                 } else {
2660                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2661                 }
2662
2663                 /*
2664                  * according to old code it should be avoided to requeue all
2665                  * 128 buffers in order to benefit from PCI avoidance.
2666                  * this function keeps at least one buffer (the buffer at
2667                  * 'index') un-requeued -> this buffer is the first buffer that
2668                  * will be requeued the next time
2669                  */
2670                 if (card->options.performance_stats) {
2671                         card->perf_stats.inbound_do_qdio_cnt++;
2672                         card->perf_stats.inbound_do_qdio_start_time =
2673                                 qeth_get_micros();
2674                 }
2675                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2676                              queue->next_buf_to_init, count);
2677                 if (card->options.performance_stats)
2678                         card->perf_stats.inbound_do_qdio_time +=
2679                                 qeth_get_micros() -
2680                                 card->perf_stats.inbound_do_qdio_start_time;
2681                 if (rc) {
2682                         dev_warn(&card->gdev->dev,
2683                                 "QDIO reported an error, rc=%i\n", rc);
2684                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2685                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2686                 }
2687                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2688                                           QDIO_MAX_BUFFERS_PER_Q;
2689         }
2690 }
2691 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2692
2693 static int qeth_handle_send_error(struct qeth_card *card,
2694                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2695 {
2696         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2697         int cc = qdio_err & 3;
2698
2699         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2700         qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");
2701         switch (cc) {
2702         case 0:
2703                 if (qdio_err) {
2704                         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2705                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2706                         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2707                                        (u16)qdio_err, (u8)sbalf15);
2708                         return QETH_SEND_ERROR_LINK_FAILURE;
2709                 }
2710                 return QETH_SEND_ERROR_NONE;
2711         case 2:
2712                 if (qdio_err & QDIO_ERROR_SIGA_BUSY) {
2713                         QETH_DBF_TEXT(TRACE, 1, "SIGAcc2B");
2714                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2715                         return QETH_SEND_ERROR_KICK_IT;
2716                 }
2717                 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2718                         return QETH_SEND_ERROR_RETRY;
2719                 return QETH_SEND_ERROR_LINK_FAILURE;
2720                 /* look at qdio_error and sbalf 15 */
2721         case 1:
2722                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc1");
2723                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2724                 return QETH_SEND_ERROR_LINK_FAILURE;
2725         case 3:
2726         default:
2727                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc3");
2728                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2729                 return QETH_SEND_ERROR_KICK_IT;
2730         }
2731 }
2732
2733 /*
2734  * Switched to packing state if the number of used buffers on a queue
2735  * reaches a certain limit.
2736  */
2737 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2738 {
2739         if (!queue->do_pack) {
2740                 if (atomic_read(&queue->used_buffers)
2741                     >= QETH_HIGH_WATERMARK_PACK){
2742                         /* switch non-PACKING -> PACKING */
2743                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2744                         if (queue->card->options.performance_stats)
2745                                 queue->card->perf_stats.sc_dp_p++;
2746                         queue->do_pack = 1;
2747                 }
2748         }
2749 }
2750
2751 /*
2752  * Switches from packing to non-packing mode. If there is a packing
2753  * buffer on the queue this buffer will be prepared to be flushed.
2754  * In that case 1 is returned to inform the caller. If no buffer
2755  * has to be flushed, zero is returned.
2756  */
2757 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2758 {
2759         struct qeth_qdio_out_buffer *buffer;
2760         int flush_count = 0;
2761
2762         if (queue->do_pack) {
2763                 if (atomic_read(&queue->used_buffers)
2764                     <= QETH_LOW_WATERMARK_PACK) {
2765                         /* switch PACKING -> non-PACKING */
2766                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2767                         if (queue->card->options.performance_stats)
2768                                 queue->card->perf_stats.sc_p_dp++;
2769                         queue->do_pack = 0;
2770                         /* flush packing buffers */
2771                         buffer = &queue->bufs[queue->next_buf_to_fill];
2772                         if ((atomic_read(&buffer->state) ==
2773                                                 QETH_QDIO_BUF_EMPTY) &&
2774                             (buffer->next_element_to_fill > 0)) {
2775                                 atomic_set(&buffer->state,
2776                                                 QETH_QDIO_BUF_PRIMED);
2777                                 flush_count++;
2778                                 queue->next_buf_to_fill =
2779                                         (queue->next_buf_to_fill + 1) %
2780                                         QDIO_MAX_BUFFERS_PER_Q;
2781                         }
2782                 }
2783         }
2784         return flush_count;
2785 }
2786
2787 /*
2788  * Called to flush a packing buffer if no more pci flags are on the queue.
2789  * Checks if there is a packing buffer and prepares it to be flushed.
2790  * In that case returns 1, otherwise zero.
2791  */
2792 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2793 {
2794         struct qeth_qdio_out_buffer *buffer;
2795
2796         buffer = &queue->bufs[queue->next_buf_to_fill];
2797         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2798            (buffer->next_element_to_fill > 0)) {
2799                 /* it's a packing buffer */
2800                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2801                 queue->next_buf_to_fill =
2802                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2803                 return 1;
2804         }
2805         return 0;
2806 }
2807
2808 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2809                                int count)
2810 {
2811         struct qeth_qdio_out_buffer *buf;
2812         int rc;
2813         int i;
2814         unsigned int qdio_flags;
2815
2816         for (i = index; i < index + count; ++i) {
2817                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2818                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2819                                 SBAL_FLAGS_LAST_ENTRY;
2820
2821                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2822                         continue;
2823
2824                 if (!queue->do_pack) {
2825                         if ((atomic_read(&queue->used_buffers) >=
2826                                 (QETH_HIGH_WATERMARK_PACK -
2827                                  QETH_WATERMARK_PACK_FUZZ)) &&
2828                             !atomic_read(&queue->set_pci_flags_count)) {
2829                                 /* it's likely that we'll go to packing
2830                                  * mode soon */
2831                                 atomic_inc(&queue->set_pci_flags_count);
2832                                 buf->buffer->element[0].flags |= 0x40;
2833                         }
2834                 } else {
2835                         if (!atomic_read(&queue->set_pci_flags_count)) {
2836                                 /*
2837                                  * there's no outstanding PCI any more, so we
2838                                  * have to request a PCI to be sure the the PCI
2839                                  * will wake at some time in the future then we
2840                                  * can flush packed buffers that might still be
2841                                  * hanging around, which can happen if no
2842                                  * further send was requested by the stack
2843                                  */
2844                                 atomic_inc(&queue->set_pci_flags_count);
2845                                 buf->buffer->element[0].flags |= 0x40;
2846                         }
2847                 }
2848         }
2849
2850         queue->card->dev->trans_start = jiffies;
2851         if (queue->card->options.performance_stats) {
2852                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2853                 queue->card->perf_stats.outbound_do_qdio_start_time =
2854                         qeth_get_micros();
2855         }
2856         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2857         if (atomic_read(&queue->set_pci_flags_count))
2858                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2859         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2860                      queue->queue_no, index, count);
2861         if (queue->card->options.performance_stats)
2862                 queue->card->perf_stats.outbound_do_qdio_time +=
2863                         qeth_get_micros() -
2864                         queue->card->perf_stats.outbound_do_qdio_start_time;
2865         if (rc) {
2866                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2867                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2868                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2869                 queue->card->stats.tx_errors += count;
2870                 /* this must not happen under normal circumstances. if it
2871                  * happens something is really wrong -> recover */
2872                 qeth_schedule_recovery(queue->card);
2873                 return;
2874         }
2875         atomic_add(count, &queue->used_buffers);
2876         if (queue->card->options.performance_stats)
2877                 queue->card->perf_stats.bufs_sent += count;
2878 }
2879
2880 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2881 {
2882         int index;
2883         int flush_cnt = 0;
2884         int q_was_packing = 0;
2885
2886         /*
2887          * check if weed have to switch to non-packing mode or if
2888          * we have to get a pci flag out on the queue
2889          */
2890         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2891             !atomic_read(&queue->set_pci_flags_count)) {
2892                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2893                                 QETH_OUT_Q_UNLOCKED) {
2894                         /*
2895                          * If we get in here, there was no action in
2896                          * do_send_packet. So, we check if there is a
2897                          * packing buffer to be flushed here.
2898                          */
2899                         netif_stop_queue(queue->card->dev);
2900                         index = queue->next_buf_to_fill;
2901                         q_was_packing = queue->do_pack;
2902                         /* queue->do_pack may change */
2903                         barrier();
2904                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2905                         if (!flush_cnt &&
2906                             !atomic_read(&queue->set_pci_flags_count))
2907                                 flush_cnt +=
2908                                         qeth_flush_buffers_on_no_pci(queue);
2909                         if (queue->card->options.performance_stats &&
2910                             q_was_packing)
2911                                 queue->card->perf_stats.bufs_sent_pack +=
2912                                         flush_cnt;
2913                         if (flush_cnt)
2914                                 qeth_flush_buffers(queue, index, flush_cnt);
2915                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2916                 }
2917         }
2918 }
2919
2920 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2921                 unsigned int qdio_error, int __queue, int first_element,
2922                 int count, unsigned long card_ptr)
2923 {
2924         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2925         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2926         struct qeth_qdio_out_buffer *buffer;
2927         int i;
2928
2929         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2930         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2931                 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2932                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2933                 netif_stop_queue(card->dev);
2934                 qeth_schedule_recovery(card);
2935                 return;
2936         }
2937         if (card->options.performance_stats) {
2938                 card->perf_stats.outbound_handler_cnt++;
2939                 card->perf_stats.outbound_handler_start_time =
2940                         qeth_get_micros();
2941         }
2942         for (i = first_element; i < (first_element + count); ++i) {
2943                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2944                 /*we only handle the KICK_IT error by doing a recovery */
2945                 if (qeth_handle_send_error(card, buffer, qdio_error)
2946                                 == QETH_SEND_ERROR_KICK_IT){
2947                         netif_stop_queue(card->dev);
2948                         qeth_schedule_recovery(card);
2949                         return;
2950                 }
2951                 qeth_clear_output_buffer(queue, buffer);
2952         }
2953         atomic_sub(count, &queue->used_buffers);
2954         /* check if we need to do something on this outbound queue */
2955         if (card->info.type != QETH_CARD_TYPE_IQD)
2956                 qeth_check_outbound_queue(queue);
2957
2958         netif_wake_queue(queue->card->dev);
2959         if (card->options.performance_stats)
2960                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2961                         card->perf_stats.outbound_handler_start_time;
2962 }
2963 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2964
2965 int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2966 {
2967         int cast_type = RTN_UNSPEC;
2968
2969         if (card->info.type == QETH_CARD_TYPE_OSN)
2970                 return cast_type;
2971
2972         if (skb->dst && skb->dst->neighbour) {
2973                 cast_type = skb->dst->neighbour->type;
2974                 if ((cast_type == RTN_BROADCAST) ||
2975                     (cast_type == RTN_MULTICAST) ||
2976                     (cast_type == RTN_ANYCAST))
2977                         return cast_type;
2978                 else
2979                         return RTN_UNSPEC;
2980         }
2981         /* try something else */
2982         if (skb->protocol == ETH_P_IPV6)
2983                 return (skb_network_header(skb)[24] == 0xff) ?
2984                                 RTN_MULTICAST : 0;
2985         else if (skb->protocol == ETH_P_IP)
2986                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2987                                 RTN_MULTICAST : 0;
2988         /* ... */
2989         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2990                 return RTN_BROADCAST;
2991         else {
2992                 u16 hdr_mac;
2993
2994                 hdr_mac = *((u16 *)skb->data);
2995                 /* tr multicast? */
2996                 switch (card->info.link_type) {
2997                 case QETH_LINK_TYPE_HSTR:
2998                 case QETH_LINK_TYPE_LANE_TR:
2999                         if ((hdr_mac == QETH_TR_MAC_NC) ||
3000                             (hdr_mac == QETH_TR_MAC_C))
3001                                 return RTN_MULTICAST;
3002                         break;
3003                 /* eth or so multicast? */
3004                 default:
3005                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
3006                             (hdr_mac == QETH_ETH_MAC_V6))
3007                                 return RTN_MULTICAST;
3008                 }
3009         }
3010         return cast_type;
3011 }
3012 EXPORT_SYMBOL_GPL(qeth_get_cast_type);
3013
3014 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3015                         int ipv, int cast_type)
3016 {
3017         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
3018                 return card->qdio.default_out_queue;
3019         switch (card->qdio.no_out_queues) {
3020         case 4:
3021                 if (cast_type && card->info.is_multicast_different)
3022                         return card->info.is_multicast_different &
3023                                 (card->qdio.no_out_queues - 1);
3024                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3025                         const u8 tos = ip_hdr(skb)->tos;
3026
3027                         if (card->qdio.do_prio_queueing ==
3028                                 QETH_PRIO_Q_ING_TOS) {
3029                                 if (tos & IP_TOS_NOTIMPORTANT)
3030                                         return 3;
3031                                 if (tos & IP_TOS_HIGHRELIABILITY)
3032                                         return 2;
3033                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3034                                         return 1;
3035                                 if (tos & IP_TOS_LOWDELAY)
3036                                         return 0;
3037                         }
3038                         if (card->qdio.do_prio_queueing ==
3039                                 QETH_PRIO_Q_ING_PREC)
3040                                 return 3 - (tos >> 6);
3041                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3042                         /* TODO: IPv6!!! */
3043                 }
3044                 return card->qdio.default_out_queue;
3045         case 1: /* fallthrough for single-out-queue 1920-device */
3046         default:
3047                 return card->qdio.default_out_queue;
3048         }
3049 }
3050 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3051
3052 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3053                      struct sk_buff *skb, int elems)
3054 {
3055         int elements_needed = 0;
3056
3057         if (skb_shinfo(skb)->nr_frags > 0)
3058                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3059         if (elements_needed == 0)
3060                 elements_needed = 1 + (((((unsigned long) skb->data) %
3061                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
3062         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3063                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3064                         "(Number=%d / Length=%d). Discarded.\n",
3065                         (elements_needed+elems), skb->len);
3066                 return 0;
3067         }
3068         return elements_needed;
3069 }
3070 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3071
3072 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3073         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3074         int offset)
3075 {
3076         int length = skb->len;
3077         int length_here;
3078         int element;
3079         char *data;
3080         int first_lap ;
3081
3082         element = *next_element_to_fill;
3083         data = skb->data;
3084         first_lap = (is_tso == 0 ? 1 : 0);
3085
3086         if (offset >= 0) {
3087                 data = skb->data + offset;
3088                 length -= offset;
3089                 first_lap = 0;
3090         }
3091
3092         while (length > 0) {
3093                 /* length_here is the remaining amount of data in this page */
3094                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3095                 if (length < length_here)
3096                         length_here = length;
3097
3098                 buffer->element[element].addr = data;
3099                 buffer->element[element].length = length_here;
3100                 length -= length_here;
3101                 if (!length) {
3102                         if (first_lap)
3103                                 buffer->element[element].flags = 0;
3104                         else
3105                                 buffer->element[element].flags =
3106                                     SBAL_FLAGS_LAST_FRAG;
3107                 } else {
3108                         if (first_lap)
3109                                 buffer->element[element].flags =
3110                                     SBAL_FLAGS_FIRST_FRAG;
3111                         else
3112                                 buffer->element[element].flags =
3113                                     SBAL_FLAGS_MIDDLE_FRAG;
3114                 }
3115                 data += length_here;
3116                 element++;
3117                 first_lap = 0;
3118         }
3119         *next_element_to_fill = element;
3120 }
3121
3122 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3123                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3124                 struct qeth_hdr *hdr, int offset, int hd_len)
3125 {
3126         struct qdio_buffer *buffer;
3127         int flush_cnt = 0, hdr_len, large_send = 0;
3128
3129         buffer = buf->buffer;
3130         atomic_inc(&skb->users);
3131         skb_queue_tail(&buf->skb_list, skb);
3132
3133         /*check first on TSO ....*/
3134         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3135                 int element = buf->next_element_to_fill;
3136
3137                 hdr_len = sizeof(struct qeth_hdr_tso) +
3138                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3139                 /*fill first buffer entry only with header information */
3140                 buffer->element[element].addr = skb->data;
3141                 buffer->element[element].length = hdr_len;
3142                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3143                 buf->next_element_to_fill++;
3144                 skb->data += hdr_len;
3145                 skb->len  -= hdr_len;
3146                 large_send = 1;
3147         }
3148
3149         if (offset >= 0) {
3150                 int element = buf->next_element_to_fill;
3151                 buffer->element[element].addr = hdr;
3152                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3153                                                         hd_len;
3154                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3155                 buf->is_header[element] = 1;
3156                 buf->next_element_to_fill++;
3157         }
3158
3159         if (skb_shinfo(skb)->nr_frags == 0)
3160                 __qeth_fill_buffer(skb, buffer, large_send,
3161                                 (int *)&buf->next_element_to_fill, offset);
3162         else
3163                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3164                                         (int *)&buf->next_element_to_fill);
3165
3166         if (!queue->do_pack) {
3167                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3168                 /* set state to PRIMED -> will be flushed */
3169                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3170                 flush_cnt = 1;
3171         } else {
3172                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3173                 if (queue->card->options.performance_stats)
3174                         queue->card->perf_stats.skbs_sent_pack++;
3175                 if (buf->next_element_to_fill >=
3176                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3177                         /*
3178                          * packed buffer if full -> set state PRIMED
3179                          * -> will be flushed
3180                          */
3181                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3182                         flush_cnt = 1;
3183                 }
3184         }
3185         return flush_cnt;
3186 }
3187
3188 int qeth_do_send_packet_fast(struct qeth_card *card,
3189                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3190                 struct qeth_hdr *hdr, int elements_needed,
3191                 struct qeth_eddp_context *ctx, int offset, int hd_len)
3192 {
3193         struct qeth_qdio_out_buffer *buffer;
3194         int buffers_needed = 0;
3195         int flush_cnt = 0;
3196         int index;
3197
3198         /* spin until we get the queue ... */
3199         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3200                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3201         /* ... now we've got the queue */
3202         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                 goto out;
3210         if (ctx == NULL)
3211                 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3212                                           QDIO_MAX_BUFFERS_PER_Q;
3213         else {
3214                 buffers_needed = qeth_eddp_check_buffers_for_context(queue,
3215                                                                         ctx);
3216                 if (buffers_needed < 0)
3217                         goto out;
3218                 queue->next_buf_to_fill =
3219                         (queue->next_buf_to_fill + buffers_needed) %
3220                         QDIO_MAX_BUFFERS_PER_Q;
3221         }
3222         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3223         if (ctx == NULL) {
3224                 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3225                 qeth_flush_buffers(queue, index, 1);
3226         } else {
3227                 flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
3228                 WARN_ON(buffers_needed != flush_cnt);
3229                 qeth_flush_buffers(queue, index, flush_cnt);
3230         }
3231         return 0;
3232 out:
3233         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3234         return -EBUSY;
3235 }
3236 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3237
3238 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3239                 struct sk_buff *skb, struct qeth_hdr *hdr,
3240                 int elements_needed, struct qeth_eddp_context *ctx)
3241 {
3242         struct qeth_qdio_out_buffer *buffer;
3243         int start_index;
3244         int flush_count = 0;
3245         int do_pack = 0;
3246         int tmp;
3247         int rc = 0;
3248
3249         /* spin until we get the queue ... */
3250         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3251                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3252         start_index = queue->next_buf_to_fill;
3253         buffer = &queue->bufs[queue->next_buf_to_fill];
3254         /*
3255          * check if buffer is empty to make sure that we do not 'overtake'
3256          * ourselves and try to fill a buffer that is already primed
3257          */
3258         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3259                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3260                 return -EBUSY;
3261         }
3262         /* check if we need to switch packing state of this queue */
3263         qeth_switch_to_packing_if_needed(queue);
3264         if (queue->do_pack) {
3265                 do_pack = 1;
3266                 if (ctx == NULL) {
3267                         /* does packet fit in current buffer? */
3268                         if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3269                             buffer->next_element_to_fill) < elements_needed) {
3270                                 /* ... no -> set state PRIMED */
3271                                 atomic_set(&buffer->state,
3272                                         QETH_QDIO_BUF_PRIMED);
3273                                 flush_count++;
3274                                 queue->next_buf_to_fill =
3275                                         (queue->next_buf_to_fill + 1) %
3276                                         QDIO_MAX_BUFFERS_PER_Q;
3277                                 buffer = &queue->bufs[queue->next_buf_to_fill];
3278                                 /* we did a step forward, so check buffer state
3279                                  * again */
3280                                 if (atomic_read(&buffer->state) !=
3281                                                 QETH_QDIO_BUF_EMPTY){
3282                                         qeth_flush_buffers(queue, start_index,
3283                                                            flush_count);
3284                                         atomic_set(&queue->state,
3285                                                 QETH_OUT_Q_UNLOCKED);
3286                                         return -EBUSY;
3287                                 }
3288                         }
3289                 } else {
3290                         /* check if we have enough elements (including following
3291                          * free buffers) to handle eddp context */
3292                         if (qeth_eddp_check_buffers_for_context(queue, ctx)
3293                                 < 0) {
3294                                 rc = -EBUSY;
3295                                 goto out;
3296                         }
3297                 }
3298         }
3299         if (ctx == NULL)
3300                 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3301         else {
3302                 tmp = qeth_eddp_fill_buffer(queue, ctx,
3303                                                 queue->next_buf_to_fill);
3304                 if (tmp < 0) {
3305                         rc = -EBUSY;
3306                         goto out;
3307                 }
3308         }
3309         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3310                                   QDIO_MAX_BUFFERS_PER_Q;
3311         flush_count += tmp;
3312 out:
3313         if (flush_count)
3314                 qeth_flush_buffers(queue, start_index, flush_count);
3315         else if (!atomic_read(&queue->set_pci_flags_count))
3316                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3317         /*
3318          * queue->state will go from LOCKED -> UNLOCKED or from
3319          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3320          * (switch packing state or flush buffer to get another pci flag out).
3321          * In that case we will enter this loop
3322          */
3323         while (atomic_dec_return(&queue->state)) {
3324                 flush_count = 0;
3325                 start_index = queue->next_buf_to_fill;
3326                 /* check if we can go back to non-packing state */
3327                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3328                 /*
3329                  * check if we need to flush a packing buffer to get a pci
3330                  * flag out on the queue
3331                  */
3332                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3333                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3334                 if (flush_count)
3335                         qeth_flush_buffers(queue, start_index, flush_count);
3336         }
3337         /* at this point the queue is UNLOCKED again */
3338         if (queue->card->options.performance_stats && do_pack)
3339                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3340
3341         return rc;
3342 }
3343 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3344
3345 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3346                 struct qeth_reply *reply, unsigned long data)
3347 {
3348         struct qeth_ipa_cmd *cmd;
3349         struct qeth_ipacmd_setadpparms *setparms;
3350
3351         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3352
3353         cmd = (struct qeth_ipa_cmd *) data;
3354         setparms = &(cmd->data.setadapterparms);
3355
3356         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3357         if (cmd->hdr.return_code) {
3358                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3359                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3360         }
3361         card->info.promisc_mode = setparms->data.mode;
3362         return 0;
3363 }
3364
3365 void qeth_setadp_promisc_mode(struct qeth_card *card)
3366 {
3367         enum qeth_ipa_promisc_modes mode;
3368         struct net_device *dev = card->dev;
3369         struct qeth_cmd_buffer *iob;
3370         struct qeth_ipa_cmd *cmd;
3371
3372         QETH_DBF_TEXT(TRACE, 4, "setprom");
3373
3374         if (((dev->flags & IFF_PROMISC) &&
3375              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3376             (!(dev->flags & IFF_PROMISC) &&
3377              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3378                 return;
3379         mode = SET_PROMISC_MODE_OFF;
3380         if (dev->flags & IFF_PROMISC)
3381                 mode = SET_PROMISC_MODE_ON;
3382         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3383
3384         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3385                         sizeof(struct qeth_ipacmd_setadpparms));
3386         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3387         cmd->data.setadapterparms.data.mode = mode;
3388         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3389 }
3390 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3391
3392 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3393 {
3394         struct qeth_card *card;
3395         char dbf_text[15];
3396
3397         card = dev->ml_priv;
3398
3399         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3400         sprintf(dbf_text, "%8x", new_mtu);
3401         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3402
3403         if (new_mtu < 64)
3404                 return -EINVAL;
3405         if (new_mtu > 65535)
3406                 return -EINVAL;
3407         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3408             (!qeth_mtu_is_valid(card, new_mtu)))
3409                 return -EINVAL;
3410         dev->mtu = new_mtu;
3411         return 0;
3412 }
3413 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3414
3415 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3416 {
3417         struct qeth_card *card;
3418
3419         card = dev->ml_priv;
3420
3421         QETH_DBF_TEXT(TRACE, 5, "getstat");
3422
3423         return &card->stats;
3424 }
3425 EXPORT_SYMBOL_GPL(qeth_get_stats);
3426
3427 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3428                 struct qeth_reply *reply, unsigned long data)
3429 {
3430         struct qeth_ipa_cmd *cmd;
3431
3432         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3433
3434         cmd = (struct qeth_ipa_cmd *) data;
3435         if (!card->options.layer2 ||
3436             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3437                 memcpy(card->dev->dev_addr,
3438                        &cmd->data.setadapterparms.data.change_addr.addr,
3439                        OSA_ADDR_LEN);
3440                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3441         }
3442         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3443         return 0;
3444 }
3445
3446 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3447 {
3448         int rc;
3449         struct qeth_cmd_buffer *iob;
3450         struct qeth_ipa_cmd *cmd;
3451
3452         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3453
3454         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3455                                    sizeof(struct qeth_ipacmd_setadpparms));
3456         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3457         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3458         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3459         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3460                card->dev->dev_addr, OSA_ADDR_LEN);
3461         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3462                                NULL);
3463         return rc;
3464 }
3465 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3466
3467 void qeth_tx_timeout(struct net_device *dev)
3468 {
3469         struct qeth_card *card;
3470
3471         card = dev->ml_priv;
3472         card->stats.tx_errors++;
3473         qeth_schedule_recovery(card);
3474 }
3475 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3476
3477 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3478 {
3479         struct qeth_card *card = dev->ml_priv;
3480         int rc = 0;
3481
3482         switch (regnum) {
3483         case MII_BMCR: /* Basic mode control register */
3484                 rc = BMCR_FULLDPLX;
3485                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3486                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3487                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3488                         rc |= BMCR_SPEED100;
3489                 break;
3490         case MII_BMSR: /* Basic mode status register */
3491                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3492                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3493                      BMSR_100BASE4;
3494                 break;
3495         case MII_PHYSID1: /* PHYS ID 1 */
3496                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3497                      dev->dev_addr[2];
3498                 rc = (rc >> 5) & 0xFFFF;
3499                 break;
3500         case MII_PHYSID2: /* PHYS ID 2 */
3501                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3502                 break;
3503         case MII_ADVERTISE: /* Advertisement control reg */
3504                 rc = ADVERTISE_ALL;
3505                 break;
3506         case MII_LPA: /* Link partner ability reg */
3507                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3508                      LPA_100BASE4 | LPA_LPACK;
3509                 break;
3510         case MII_EXPANSION: /* Expansion register */
3511                 break;
3512         case MII_DCOUNTER: /* disconnect counter */
3513                 break;
3514         case MII_FCSCOUNTER: /* false carrier counter */
3515                 break;
3516         case MII_NWAYTEST: /* N-way auto-neg test register */
3517                 break;
3518         case MII_RERRCOUNTER: /* rx error counter */
3519                 rc = card->stats.rx_errors;
3520                 break;
3521         case MII_SREVISION: /* silicon revision */
3522                 break;
3523         case MII_RESV1: /* reserved 1 */
3524                 break;
3525         case MII_LBRERROR: /* loopback, rx, bypass error */
3526                 break;
3527         case MII_PHYADDR: /* physical address */
3528                 break;
3529         case MII_RESV2: /* reserved 2 */
3530                 break;
3531         case MII_TPISTATUS: /* TPI status for 10mbps */
3532                 break;
3533         case MII_NCONFIG: /* network interface config */
3534                 break;
3535         default:
3536                 break;
3537         }
3538         return rc;
3539 }
3540 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3541
3542 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3543                 struct qeth_cmd_buffer *iob, int len,
3544                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3545                         unsigned long),
3546                 void *reply_param)
3547 {
3548         u16 s1, s2;
3549
3550         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3551
3552         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3553         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3554                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3555         /* adjust PDU length fields in IPA_PDU_HEADER */
3556         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3557         s2 = (u32) len;
3558         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3559         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3560         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3561         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3562         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3563                                       reply_cb, reply_param);
3564 }
3565
3566 static int qeth_snmp_command_cb(struct qeth_card *card,
3567                 struct qeth_reply *reply, unsigned long sdata)
3568 {
3569         struct qeth_ipa_cmd *cmd;
3570         struct qeth_arp_query_info *qinfo;
3571         struct qeth_snmp_cmd *snmp;
3572         unsigned char *data;
3573         __u16 data_len;
3574
3575         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3576
3577         cmd = (struct qeth_ipa_cmd *) sdata;
3578         data = (unsigned char *)((char *)cmd - reply->offset);
3579         qinfo = (struct qeth_arp_query_info *) reply->param;
3580         snmp = &cmd->data.setadapterparms.data.snmp;
3581
3582         if (cmd->hdr.return_code) {
3583                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3584                 return 0;
3585         }
3586         if (cmd->data.setadapterparms.hdr.return_code) {
3587                 cmd->hdr.return_code =
3588                         cmd->data.setadapterparms.hdr.return_code;
3589                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3590                 return 0;
3591         }
3592         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3593         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3594                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3595         else
3596                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3597
3598         /* check if there is enough room in userspace */
3599         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3600                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3601                 cmd->hdr.return_code = -ENOMEM;
3602                 return 0;
3603         }
3604         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3605                        cmd->data.setadapterparms.hdr.used_total);
3606         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3607                 cmd->data.setadapterparms.hdr.seq_no);
3608         /*copy entries to user buffer*/
3609         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3610                 memcpy(qinfo->udata + qinfo->udata_offset,
3611                        (char *)snmp,
3612                        data_len + offsetof(struct qeth_snmp_cmd, data));
3613                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3614         } else {
3615                 memcpy(qinfo->udata + qinfo->udata_offset,
3616                        (char *)&snmp->request, data_len);
3617         }
3618         qinfo->udata_offset += data_len;
3619         /* check if all replies received ... */
3620                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3621                                cmd->data.setadapterparms.hdr.used_total);
3622                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3623                                cmd->data.setadapterparms.hdr.seq_no);
3624         if (cmd->data.setadapterparms.hdr.seq_no <
3625             cmd->data.setadapterparms.hdr.used_total)
3626                 return 1;
3627         return 0;
3628 }
3629
3630 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3631 {
3632         struct qeth_cmd_buffer *iob;
3633         struct qeth_ipa_cmd *cmd;
3634         struct qeth_snmp_ureq *ureq;
3635         int req_len;
3636         struct qeth_arp_query_info qinfo = {0, };
3637         int rc = 0;
3638
3639         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3640
3641         if (card->info.guestlan)
3642                 return -EOPNOTSUPP;
3643
3644         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3645             (!card->options.layer2)) {
3646                 return -EOPNOTSUPP;
3647         }
3648         /* skip 4 bytes (data_len struct member) to get req_len */
3649         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3650                 return -EFAULT;
3651         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3652         if (!ureq) {
3653                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3654                 return -ENOMEM;
3655         }
3656         if (copy_from_user(ureq, udata,
3657                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3658                 kfree(ureq);
3659                 return -EFAULT;
3660         }
3661         qinfo.udata_len = ureq->hdr.data_len;
3662         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3663         if (!qinfo.udata) {
3664                 kfree(ureq);
3665                 return -ENOMEM;
3666         }
3667         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3668
3669         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3670                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3671         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3672         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3673         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3674                                     qeth_snmp_command_cb, (void *)&qinfo);
3675         if (rc)
3676                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3677                            QETH_CARD_IFNAME(card), rc);
3678         else {
3679                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3680                         rc = -EFAULT;
3681         }
3682
3683         kfree(ureq);
3684         kfree(qinfo.udata);
3685         return rc;
3686 }
3687 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3688
3689 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3690 {
3691         switch (card->info.type) {
3692         case QETH_CARD_TYPE_IQD:
3693                 return 2;
3694         default:
3695                 return 0;
3696         }
3697 }
3698
3699 static int qeth_qdio_establish(struct qeth_card *card)
3700 {
3701         struct qdio_initialize init_data;
3702         char *qib_param_field;
3703         struct qdio_buffer **in_sbal_ptrs;
3704         struct qdio_buffer **out_sbal_ptrs;
3705         int i, j, k;
3706         int rc = 0;
3707
3708         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3709
3710         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3711                               GFP_KERNEL);
3712         if (!qib_param_field)
3713                 return -ENOMEM;
3714
3715         qeth_create_qib_param_field(card, qib_param_field);
3716         qeth_create_qib_param_field_blkt(card, qib_param_field);
3717
3718         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3719                                GFP_KERNEL);
3720         if (!in_sbal_ptrs) {
3721                 kfree(qib_param_field);
3722                 return -ENOMEM;
3723         }
3724         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3725                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3726                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3727
3728         out_sbal_ptrs =
3729                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3730                         sizeof(void *), GFP_KERNEL);
3731         if (!out_sbal_ptrs) {
3732                 kfree(in_sbal_ptrs);
3733                 kfree(qib_param_field);
3734                 return -ENOMEM;
3735         }
3736         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3737                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3738                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3739                                 card->qdio.out_qs[i]->bufs[j].buffer);
3740                 }
3741
3742         memset(&init_data, 0, sizeof(struct qdio_initialize));
3743         init_data.cdev                   = CARD_DDEV(card);
3744         init_data.q_format               = qeth_get_qdio_q_format(card);
3745         init_data.qib_param_field_format = 0;
3746         init_data.qib_param_field        = qib_param_field;
3747         init_data.no_input_qs            = 1;
3748         init_data.no_output_qs           = card->qdio.no_out_queues;
3749         init_data.input_handler          = card->discipline.input_handler;
3750         init_data.output_handler         = card->discipline.output_handler;
3751         init_data.int_parm               = (unsigned long) card;
3752         init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
3753                                            QDIO_OUTBOUND_0COPY_SBALS |
3754                                            QDIO_USE_OUTBOUND_PCIS;
3755         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3756         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3757
3758         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3759                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3760                 rc = qdio_initialize(&init_data);
3761                 if (rc)
3762                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3763         }
3764         kfree(out_sbal_ptrs);
3765         kfree(in_sbal_ptrs);
3766         kfree(qib_param_field);
3767         return rc;
3768 }
3769
3770 static void qeth_core_free_card(struct qeth_card *card)
3771 {
3772
3773         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3774         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3775         qeth_clean_channel(&card->read);
3776         qeth_clean_channel(&card->write);
3777         if (card->dev)
3778                 free_netdev(card->dev);
3779         kfree(card->ip_tbd_list);
3780         qeth_free_qdio_buffers(card);
3781         unregister_service_level(&card->qeth_service_level);
3782         kfree(card);
3783 }
3784
3785 static struct ccw_device_id qeth_ids[] = {
3786         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3787         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3788         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3789         {},
3790 };
3791 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3792
3793 static struct ccw_driver qeth_ccw_driver = {
3794         .name = "qeth",
3795         .ids = qeth_ids,
3796         .probe = ccwgroup_probe_ccwdev,
3797         .remove = ccwgroup_remove_ccwdev,
3798 };
3799
3800 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3801                                 unsigned long driver_id)
3802 {
3803         return ccwgroup_create_from_string(root_dev, driver_id,
3804                                            &qeth_ccw_driver, 3, buf);
3805 }
3806
3807 int qeth_core_hardsetup_card(struct qeth_card *card)
3808 {
3809         struct qdio_ssqd_desc *ssqd;
3810         int retries = 3;
3811         int mpno = 0;
3812         int rc;
3813
3814         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3815         atomic_set(&card->force_alloc_skb, 0);
3816 retry:
3817         if (retries < 3) {
3818                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3819                         dev_name(&card->gdev->dev));
3820                 ccw_device_set_offline(CARD_DDEV(card));
3821                 ccw_device_set_offline(CARD_WDEV(card));
3822                 ccw_device_set_offline(CARD_RDEV(card));
3823                 ccw_device_set_online(CARD_RDEV(card));
3824                 ccw_device_set_online(CARD_WDEV(card));
3825                 ccw_device_set_online(CARD_DDEV(card));
3826         }
3827         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3828         if (rc == -ERESTARTSYS) {
3829                 QETH_DBF_TEXT(SETUP, 2, "break1");
3830                 return rc;
3831         } else if (rc) {
3832                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3833                 if (--retries < 0)
3834                         goto out;
3835                 else
3836                         goto retry;
3837         }
3838
3839         rc = qeth_get_unitaddr(card);
3840         if (rc) {
3841                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3842                 return rc;
3843         }
3844
3845         ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL);
3846         if (!ssqd) {
3847                 rc = -ENOMEM;
3848                 goto out;
3849         }
3850         rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd);
3851         if (rc == 0)
3852                 mpno = ssqd->pcnt;
3853         kfree(ssqd);
3854
3855         if (mpno)
3856                 mpno = min(mpno - 1, QETH_MAX_PORTNO);
3857         if (card->info.portno > mpno) {
3858                 QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d"
3859                         "\n.", CARD_BUS_ID(card), card->info.portno);
3860                 rc = -ENODEV;
3861                 goto out;
3862         }
3863         qeth_init_tokens(card);
3864         qeth_init_func_level(card);
3865         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3866         if (rc == -ERESTARTSYS) {
3867                 QETH_DBF_TEXT(SETUP, 2, "break2");
3868                 return rc;
3869         } else if (rc) {
3870                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3871                 if (--retries < 0)
3872                         goto out;
3873                 else
3874                         goto retry;
3875         }
3876         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3877         if (rc == -ERESTARTSYS) {
3878                 QETH_DBF_TEXT(SETUP, 2, "break3");
3879                 return rc;
3880         } else if (rc) {
3881                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3882                 if (--retries < 0)
3883                         goto out;
3884                 else
3885                         goto retry;
3886         }
3887         rc = qeth_mpc_initialize(card);
3888         if (rc) {
3889                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3890                 goto out;
3891         }
3892         return 0;
3893 out:
3894         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3895                 "an error on the device\n");
3896         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3897                 dev_name(&card->gdev->dev), rc);
3898         return rc;
3899 }
3900 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3901
3902 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3903                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3904 {
3905         struct page *page = virt_to_page(element->addr);
3906         if (*pskb == NULL) {
3907                 /* the upper protocol layers assume that there is data in the
3908                  * skb itself. Copy a small amount (64 bytes) to make them
3909                  * happy. */
3910                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3911                 if (!(*pskb))
3912                         return -ENOMEM;
3913                 skb_reserve(*pskb, ETH_HLEN);
3914                 if (data_len <= 64) {
3915                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3916                                 data_len);
3917                 } else {
3918                         get_page(page);
3919                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3920                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3921                                 data_len - 64);
3922                         (*pskb)->data_len += data_len - 64;
3923                         (*pskb)->len      += data_len - 64;
3924                         (*pskb)->truesize += data_len - 64;
3925                         (*pfrag)++;
3926                 }
3927         } else {
3928                 get_page(page);
3929                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3930                 (*pskb)->data_len += data_len;
3931                 (*pskb)->len      += data_len;
3932                 (*pskb)->truesize += data_len;
3933                 (*pfrag)++;
3934         }
3935         return 0;
3936 }
3937
3938 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3939                 struct qdio_buffer *buffer,
3940                 struct qdio_buffer_element **__element, int *__offset,
3941                 struct qeth_hdr **hdr)
3942 {
3943         struct qdio_buffer_element *element = *__element;
3944         int offset = *__offset;
3945         struct sk_buff *skb = NULL;
3946         int skb_len;
3947         void *data_ptr;
3948         int data_len;
3949         int headroom = 0;
3950         int use_rx_sg = 0;
3951         int frag = 0;
3952
3953         /* qeth_hdr must not cross element boundaries */
3954         if (element->length < offset + sizeof(struct qeth_hdr)) {
3955                 if (qeth_is_last_sbale(element))
3956                         return NULL;
3957                 element++;
3958                 offset = 0;
3959                 if (element->length < sizeof(struct qeth_hdr))
3960                         return NULL;
3961         }
3962         *hdr = element->addr + offset;
3963
3964         offset += sizeof(struct qeth_hdr);
3965         if (card->options.layer2) {
3966                 if (card->info.type == QETH_CARD_TYPE_OSN) {
3967                         skb_len = (*hdr)->hdr.osn.pdu_length;
3968                         headroom = sizeof(struct qeth_hdr);
3969                 } else {
3970                         skb_len = (*hdr)->hdr.l2.pkt_length;
3971                 }
3972         } else {
3973                 skb_len = (*hdr)->hdr.l3.length;
3974                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3975                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
3976                         headroom = TR_HLEN;
3977                 else
3978                         headroom = ETH_HLEN;
3979         }
3980
3981         if (!skb_len)
3982                 return NULL;
3983
3984         if ((skb_len >= card->options.rx_sg_cb) &&
3985             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
3986             (!atomic_read(&card->force_alloc_skb))) {
3987                 use_rx_sg = 1;
3988         } else {
3989                 skb = dev_alloc_skb(skb_len + headroom);
3990                 if (!skb)
3991                         goto no_mem;
3992                 if (headroom)
3993                         skb_reserve(skb, headroom);
3994         }
3995
3996         data_ptr = element->addr + offset;
3997         while (skb_len) {
3998                 data_len = min(skb_len, (int)(element->length - offset));
3999                 if (data_len) {
4000                         if (use_rx_sg) {
4001                                 if (qeth_create_skb_frag(element, &skb, offset,
4002                                     &frag, data_len))
4003                                         goto no_mem;
4004                         } else {
4005                                 memcpy(skb_put(skb, data_len), data_ptr,
4006                                         data_len);
4007                         }
4008                 }
4009                 skb_len -= data_len;
4010                 if (skb_len) {
4011                         if (qeth_is_last_sbale(element)) {
4012                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4013                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4014                                         CARD_BUS_ID(card));
4015                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4016                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4017                                         CARD_BUS_ID(card));
4018                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4019                                 dev_kfree_skb_any(skb);
4020                                 card->stats.rx_errors++;
4021                                 return NULL;
4022                         }
4023                         element++;
4024                         offset = 0;
4025                         data_ptr = element->addr;
4026                 } else {
4027                         offset += data_len;
4028                 }
4029         }
4030         *__element = element;
4031         *__offset = offset;
4032         if (use_rx_sg && card->options.performance_stats) {
4033                 card->perf_stats.sg_skbs_rx++;
4034                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4035         }
4036         return skb;
4037 no_mem:
4038         if (net_ratelimit()) {
4039                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4040                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4041         }
4042         card->stats.rx_dropped++;
4043         return NULL;
4044 }
4045 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4046
4047 static void qeth_unregister_dbf_views(void)
4048 {
4049         int x;
4050         for (x = 0; x < QETH_DBF_INFOS; x++) {
4051                 debug_unregister(qeth_dbf[x].id);
4052                 qeth_dbf[x].id = NULL;
4053         }
4054 }
4055
4056 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
4057 {
4058         char dbf_txt_buf[32];
4059         va_list args;
4060
4061         if (level > (qeth_dbf[dbf_nix].id)->level)
4062                 return;
4063         va_start(args, fmt);
4064         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4065         va_end(args);
4066         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4067 }
4068 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4069
4070 static int qeth_register_dbf_views(void)
4071 {
4072         int ret;
4073         int x;
4074
4075         for (x = 0; x < QETH_DBF_INFOS; x++) {
4076                 /* register the areas */
4077                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4078                                                 qeth_dbf[x].pages,
4079                                                 qeth_dbf[x].areas,
4080                                                 qeth_dbf[x].len);
4081                 if (qeth_dbf[x].id == NULL) {
4082                         qeth_unregister_dbf_views();
4083                         return -ENOMEM;
4084                 }
4085
4086                 /* register a view */
4087                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4088                 if (ret) {
4089                         qeth_unregister_dbf_views();
4090                         return ret;
4091                 }
4092
4093                 /* set a passing level */
4094                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4095         }
4096
4097         return 0;
4098 }
4099
4100 int qeth_core_load_discipline(struct qeth_card *card,
4101                 enum qeth_discipline_id discipline)
4102 {
4103         int rc = 0;
4104         switch (discipline) {
4105         case QETH_DISCIPLINE_LAYER3:
4106                 card->discipline.ccwgdriver = try_then_request_module(
4107                         symbol_get(qeth_l3_ccwgroup_driver),
4108                         "qeth_l3");
4109                 break;
4110         case QETH_DISCIPLINE_LAYER2:
4111                 card->discipline.ccwgdriver = try_then_request_module(
4112                         symbol_get(qeth_l2_ccwgroup_driver),
4113                         "qeth_l2");
4114                 break;
4115         }
4116         if (!card->discipline.ccwgdriver) {
4117                 dev_err(&card->gdev->dev, "There is no kernel module to "
4118                         "support discipline %d\n", discipline);
4119                 rc = -EINVAL;
4120         }
4121         return rc;
4122 }
4123
4124 void qeth_core_free_discipline(struct qeth_card *card)
4125 {
4126         if (card->options.layer2)
4127                 symbol_put(qeth_l2_ccwgroup_driver);
4128         else
4129                 symbol_put(qeth_l3_ccwgroup_driver);
4130         card->discipline.ccwgdriver = NULL;
4131 }
4132
4133 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4134 {
4135         struct qeth_card *card;
4136         struct device *dev;
4137         int rc;
4138         unsigned long flags;
4139
4140         QETH_DBF_TEXT(SETUP, 2, "probedev");
4141
4142         dev = &gdev->dev;
4143         if (!get_device(dev))
4144                 return -ENODEV;
4145
4146         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4147
4148         card = qeth_alloc_card();
4149         if (!card) {
4150                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4151                 rc = -ENOMEM;
4152                 goto err_dev;
4153         }
4154         card->read.ccwdev  = gdev->cdev[0];
4155         card->write.ccwdev = gdev->cdev[1];
4156         card->data.ccwdev  = gdev->cdev[2];
4157         dev_set_drvdata(&gdev->dev, card);
4158         card->gdev = gdev;
4159         gdev->cdev[0]->handler = qeth_irq;
4160         gdev->cdev[1]->handler = qeth_irq;
4161         gdev->cdev[2]->handler = qeth_irq;
4162
4163         rc = qeth_determine_card_type(card);
4164         if (rc) {
4165                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4166                 goto err_card;
4167         }
4168         rc = qeth_setup_card(card);
4169         if (rc) {
4170                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4171                 goto err_card;
4172         }
4173
4174         if (card->info.type == QETH_CARD_TYPE_OSN) {
4175                 rc = qeth_core_create_osn_attributes(dev);
4176                 if (rc)
4177                         goto err_card;
4178                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4179                 if (rc) {
4180                         qeth_core_remove_osn_attributes(dev);
4181                         goto err_card;
4182                 }
4183                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4184                 if (rc) {
4185                         qeth_core_free_discipline(card);
4186                         qeth_core_remove_osn_attributes(dev);
4187                         goto err_card;
4188                 }
4189         } else {
4190                 rc = qeth_core_create_device_attributes(dev);
4191                 if (rc)
4192                         goto err_card;
4193         }
4194
4195         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4196         list_add_tail(&card->list, &qeth_core_card_list.list);
4197         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4198         return 0;
4199
4200 err_card:
4201         qeth_core_free_card(card);
4202 err_dev:
4203         put_device(dev);
4204         return rc;
4205 }
4206
4207 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4208 {
4209         unsigned long flags;
4210         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4211
4212         QETH_DBF_TEXT(SETUP, 2, "removedv");
4213         if (card->discipline.ccwgdriver) {
4214                 card->discipline.ccwgdriver->remove(gdev);
4215                 qeth_core_free_discipline(card);
4216         }
4217
4218         if (card->info.type == QETH_CARD_TYPE_OSN) {
4219                 qeth_core_remove_osn_attributes(&gdev->dev);
4220         } else {
4221                 qeth_core_remove_device_attributes(&gdev->dev);
4222         }
4223         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4224         list_del(&card->list);
4225         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4226         qeth_core_free_card(card);
4227         dev_set_drvdata(&gdev->dev, NULL);
4228         put_device(&gdev->dev);
4229         return;
4230 }
4231
4232 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4233 {
4234         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4235         int rc = 0;
4236         int def_discipline;
4237
4238         if (!card->discipline.ccwgdriver) {
4239                 if (card->info.type == QETH_CARD_TYPE_IQD)
4240                         def_discipline = QETH_DISCIPLINE_LAYER3;
4241                 else
4242                         def_discipline = QETH_DISCIPLINE_LAYER2;
4243                 rc = qeth_core_load_discipline(card, def_discipline);
4244                 if (rc)
4245                         goto err;
4246                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4247                 if (rc)
4248                         goto err;
4249         }
4250         rc = card->discipline.ccwgdriver->set_online(gdev);
4251 err:
4252         return rc;
4253 }
4254
4255 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4256 {
4257         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4258         return card->discipline.ccwgdriver->set_offline(gdev);
4259 }
4260
4261 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4262 {
4263         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4264         if (card->discipline.ccwgdriver &&
4265             card->discipline.ccwgdriver->shutdown)
4266                 card->discipline.ccwgdriver->shutdown(gdev);
4267 }
4268
4269 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4270         .owner = THIS_MODULE,
4271         .name = "qeth",
4272         .driver_id = 0xD8C5E3C8,
4273         .probe = qeth_core_probe_device,
4274         .remove = qeth_core_remove_device,
4275         .set_online = qeth_core_set_online,
4276         .set_offline = qeth_core_set_offline,
4277         .shutdown = qeth_core_shutdown,
4278 };
4279
4280 static ssize_t
4281 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4282                            size_t count)
4283 {
4284         int err;
4285         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4286                                         qeth_core_ccwgroup_driver.driver_id);
4287         if (err)
4288                 return err;
4289         else
4290                 return count;
4291 }
4292
4293 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4294
4295 static struct {
4296         const char str[ETH_GSTRING_LEN];
4297 } qeth_ethtool_stats_keys[] = {
4298 /*  0 */{"rx skbs"},
4299         {"rx buffers"},
4300         {"tx skbs"},
4301         {"tx buffers"},
4302         {"tx skbs no packing"},
4303         {"tx buffers no packing"},
4304         {"tx skbs packing"},
4305         {"tx buffers packing"},
4306         {"tx sg skbs"},
4307         {"tx sg frags"},
4308 /* 10 */{"rx sg skbs"},
4309         {"rx sg frags"},
4310         {"rx sg page allocs"},
4311         {"tx large kbytes"},
4312         {"tx large count"},
4313         {"tx pk state ch n->p"},
4314         {"tx pk state ch p->n"},
4315         {"tx pk watermark low"},
4316         {"tx pk watermark high"},
4317         {"queue 0 buffer usage"},
4318 /* 20 */{"queue 1 buffer usage"},
4319         {"queue 2 buffer usage"},
4320         {"queue 3 buffer usage"},
4321         {"rx handler time"},
4322         {"rx handler count"},
4323         {"rx do_QDIO time"},
4324         {"rx do_QDIO count"},
4325         {"tx handler time"},
4326         {"tx handler count"},
4327         {"tx time"},
4328 /* 30 */{"tx count"},
4329         {"tx do_QDIO time"},
4330         {"tx do_QDIO count"},
4331 };
4332
4333 int qeth_core_get_stats_count(struct net_device *dev)
4334 {
4335         return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4336 }
4337 EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
4338
4339 void qeth_core_get_ethtool_stats(struct net_device *dev,
4340                 struct ethtool_stats *stats, u64 *data)
4341 {
4342         struct qeth_card *card = dev->ml_priv;
4343         data[0] = card->stats.rx_packets -
4344                                 card->perf_stats.initial_rx_packets;
4345         data[1] = card->perf_stats.bufs_rec;
4346         data[2] = card->stats.tx_packets -
4347                                 card->perf_stats.initial_tx_packets;
4348         data[3] = card->perf_stats.bufs_sent;
4349         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4350                         - card->perf_stats.skbs_sent_pack;
4351         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4352         data[6] = card->perf_stats.skbs_sent_pack;
4353         data[7] = card->perf_stats.bufs_sent_pack;
4354         data[8] = card->perf_stats.sg_skbs_sent;
4355         data[9] = card->perf_stats.sg_frags_sent;
4356         data[10] = card->perf_stats.sg_skbs_rx;
4357         data[11] = card->perf_stats.sg_frags_rx;
4358         data[12] = card->perf_stats.sg_alloc_page_rx;
4359         data[13] = (card->perf_stats.large_send_bytes >> 10);
4360         data[14] = card->perf_stats.large_send_cnt;
4361         data[15] = card->perf_stats.sc_dp_p;
4362         data[16] = card->perf_stats.sc_p_dp;
4363         data[17] = QETH_LOW_WATERMARK_PACK;
4364         data[18] = QETH_HIGH_WATERMARK_PACK;
4365         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4366         data[20] = (card->qdio.no_out_queues > 1) ?
4367                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4368         data[21] = (card->qdio.no_out_queues > 2) ?
4369                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4370         data[22] = (card->qdio.no_out_queues > 3) ?
4371                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4372         data[23] = card->perf_stats.inbound_time;
4373         data[24] = card->perf_stats.inbound_cnt;
4374         data[25] = card->perf_stats.inbound_do_qdio_time;
4375         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4376         data[27] = card->perf_stats.outbound_handler_time;
4377         data[28] = card->perf_stats.outbound_handler_cnt;
4378         data[29] = card->perf_stats.outbound_time;
4379         data[30] = card->perf_stats.outbound_cnt;
4380         data[31] = card->perf_stats.outbound_do_qdio_time;
4381         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4382 }
4383 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4384
4385 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4386 {
4387         switch (stringset) {
4388         case ETH_SS_STATS:
4389                 memcpy(data, &qeth_ethtool_stats_keys,
4390                         sizeof(qeth_ethtool_stats_keys));
4391                 break;
4392         default:
4393                 WARN_ON(1);
4394                 break;
4395         }
4396 }
4397 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4398
4399 void qeth_core_get_drvinfo(struct net_device *dev,
4400                 struct ethtool_drvinfo *info)
4401 {
4402         struct qeth_card *card = dev->ml_priv;
4403         if (card->options.layer2)
4404                 strcpy(info->driver, "qeth_l2");
4405         else
4406                 strcpy(info->driver, "qeth_l3");
4407
4408         strcpy(info->version, "1.0");
4409         strcpy(info->fw_version, card->info.mcl_level);
4410         sprintf(info->bus_info, "%s/%s/%s",
4411                         CARD_RDEV_ID(card),
4412                         CARD_WDEV_ID(card),
4413                         CARD_DDEV_ID(card));
4414 }
4415 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4416
4417 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4418                                         struct ethtool_cmd *ecmd)
4419 {
4420         struct qeth_card *card = netdev->ml_priv;
4421         enum qeth_link_types link_type;
4422
4423         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4424                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4425         else
4426                 link_type = card->info.link_type;
4427
4428         ecmd->transceiver = XCVR_INTERNAL;
4429         ecmd->supported = SUPPORTED_Autoneg;
4430         ecmd->advertising = ADVERTISED_Autoneg;
4431         ecmd->duplex = DUPLEX_FULL;
4432         ecmd->autoneg = AUTONEG_ENABLE;
4433
4434         switch (link_type) {
4435         case QETH_LINK_TYPE_FAST_ETH:
4436         case QETH_LINK_TYPE_LANE_ETH100:
4437                 ecmd->supported |= SUPPORTED_10baseT_Half |
4438                                         SUPPORTED_10baseT_Full |
4439                                         SUPPORTED_100baseT_Half |
4440                                         SUPPORTED_100baseT_Full |
4441                                         SUPPORTED_TP;
4442                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4443                                         ADVERTISED_10baseT_Full |
4444                                         ADVERTISED_100baseT_Half |
4445                                         ADVERTISED_100baseT_Full |
4446                                         ADVERTISED_TP;
4447                 ecmd->speed = SPEED_100;
4448                 ecmd->port = PORT_TP;
4449                 break;
4450
4451         case QETH_LINK_TYPE_GBIT_ETH:
4452         case QETH_LINK_TYPE_LANE_ETH1000:
4453                 ecmd->supported |= SUPPORTED_10baseT_Half |
4454                                         SUPPORTED_10baseT_Full |
4455                                         SUPPORTED_100baseT_Half |
4456                                         SUPPORTED_100baseT_Full |
4457                                         SUPPORTED_1000baseT_Half |
4458                                         SUPPORTED_1000baseT_Full |
4459                                         SUPPORTED_FIBRE;
4460                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4461                                         ADVERTISED_10baseT_Full |
4462                                         ADVERTISED_100baseT_Half |
4463                                         ADVERTISED_100baseT_Full |
4464                                         ADVERTISED_1000baseT_Half |
4465                                         ADVERTISED_1000baseT_Full |
4466                                         ADVERTISED_FIBRE;
4467                 ecmd->speed = SPEED_1000;
4468                 ecmd->port = PORT_FIBRE;
4469                 break;
4470
4471         case QETH_LINK_TYPE_10GBIT_ETH:
4472                 ecmd->supported |= SUPPORTED_10baseT_Half |
4473                                         SUPPORTED_10baseT_Full |
4474                                         SUPPORTED_100baseT_Half |
4475                                         SUPPORTED_100baseT_Full |
4476                                         SUPPORTED_1000baseT_Half |
4477                                         SUPPORTED_1000baseT_Full |
4478                                         SUPPORTED_10000baseT_Full |
4479                                         SUPPORTED_FIBRE;
4480                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4481                                         ADVERTISED_10baseT_Full |
4482                                         ADVERTISED_100baseT_Half |
4483                                         ADVERTISED_100baseT_Full |
4484                                         ADVERTISED_1000baseT_Half |
4485                                         ADVERTISED_1000baseT_Full |
4486                                         ADVERTISED_10000baseT_Full |
4487                                         ADVERTISED_FIBRE;
4488                 ecmd->speed = SPEED_10000;
4489                 ecmd->port = PORT_FIBRE;
4490                 break;
4491
4492         default:
4493                 ecmd->supported |= SUPPORTED_10baseT_Half |
4494                                         SUPPORTED_10baseT_Full |
4495                                         SUPPORTED_TP;
4496                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4497                                         ADVERTISED_10baseT_Full |
4498                                         ADVERTISED_TP;
4499                 ecmd->speed = SPEED_10;
4500                 ecmd->port = PORT_TP;
4501         }
4502
4503         return 0;
4504 }
4505 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4506
4507 static int __init qeth_core_init(void)
4508 {
4509         int rc;
4510
4511         pr_info("loading core functions\n");
4512         INIT_LIST_HEAD(&qeth_core_card_list.list);
4513         rwlock_init(&qeth_core_card_list.rwlock);
4514
4515         rc = qeth_register_dbf_views();
4516         if (rc)
4517                 goto out_err;
4518         rc = ccw_driver_register(&qeth_ccw_driver);
4519         if (rc)
4520                 goto ccw_err;
4521         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4522         if (rc)
4523                 goto ccwgroup_err;
4524         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4525                                 &driver_attr_group);
4526         if (rc)
4527                 goto driver_err;
4528         qeth_core_root_dev = s390_root_dev_register("qeth");
4529         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4530         if (rc)
4531                 goto register_err;
4532
4533         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4534                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4535         if (!qeth_core_header_cache) {
4536                 rc = -ENOMEM;
4537                 goto slab_err;
4538         }
4539
4540         return 0;
4541 slab_err:
4542         s390_root_dev_unregister(qeth_core_root_dev);
4543 register_err:
4544         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4545                            &driver_attr_group);
4546 driver_err:
4547         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4548 ccwgroup_err:
4549         ccw_driver_unregister(&qeth_ccw_driver);
4550 ccw_err:
4551         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4552         qeth_unregister_dbf_views();
4553 out_err:
4554         pr_err("Initializing the qeth device driver failed\n");
4555         return rc;
4556 }
4557
4558 static void __exit qeth_core_exit(void)
4559 {
4560         s390_root_dev_unregister(qeth_core_root_dev);
4561         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4562                            &driver_attr_group);
4563         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4564         ccw_driver_unregister(&qeth_ccw_driver);
4565         kmem_cache_destroy(qeth_core_header_cache);
4566         qeth_unregister_dbf_views();
4567         pr_info("core functions removed\n");
4568 }
4569
4570 module_init(qeth_core_init);
4571 module_exit(qeth_core_exit);
4572 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4573 MODULE_DESCRIPTION("qeth core functions");
4574 MODULE_LICENSE("GPL");