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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 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/string.h>
  14 #include <linux/errno.h>
  15 #include <linux/kernel.h>
  16 #include <linux/ip.h>
  17 #include <linux/ipv6.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21
  22 #include <asm-s390/ebcdic.h>
  23 #include <asm-s390/io.h>
  24 #include <asm/s390_rdev.h>
  25
  26 #include "qeth_core.h"
  27 #include "qeth_core_offl.h"
  28
  29 static DEFINE_PER_CPU(char[256], qeth_core_dbf_txt_buf);
  30 #define QETH_DBF_TXT_BUF qeth_core_dbf_txt_buf
  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
  55 static struct device *qeth_core_root_dev;
  56 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  57 static struct lock_class_key qdio_out_skb_queue_key;
  58
  59 static void qeth_send_control_data_cb(struct qeth_channel *,
  60                         struct qeth_cmd_buffer *);
  61 static int qeth_issue_next_read(struct qeth_card *);
  62 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  63 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  64 static void qeth_free_buffer_pool(struct qeth_card *);
  65 static int qeth_qdio_establish(struct qeth_card *);
  66
  67
  68 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  69                 struct qdio_buffer *buffer, int is_tso,
  70                 int *next_element_to_fill)
  71 {
  72         struct skb_frag_struct *frag;
  73         int fragno;
  74         unsigned long addr;
  75         int element, cnt, dlen;
  76
  77         fragno = skb_shinfo(skb)->nr_frags;
  78         element = *next_element_to_fill;
  79         dlen = 0;
  80
  81         if (is_tso)
  82                 buffer->element[element].flags =
  83                         SBAL_FLAGS_MIDDLE_FRAG;
  84         else
  85                 buffer->element[element].flags =
  86                         SBAL_FLAGS_FIRST_FRAG;
  87         dlen = skb->len - skb->data_len;
  88         if (dlen) {
  89                 buffer->element[element].addr = skb->data;
  90                 buffer->element[element].length = dlen;
  91                 element++;
  92         }
  93         for (cnt = 0; cnt < fragno; cnt++) {
  94                 frag = &skb_shinfo(skb)->frags[cnt];
  95                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  96                         frag->page_offset;
  97                 buffer->element[element].addr = (char *)addr;
  98                 buffer->element[element].length = frag->size;
  99                 if (cnt < (fragno - 1))
 100                         buffer->element[element].flags =
 101                                 SBAL_FLAGS_MIDDLE_FRAG;
 102                 else
 103                         buffer->element[element].flags =
 104                                 SBAL_FLAGS_LAST_FRAG;
 105                 element++;
 106         }
 107         *next_element_to_fill = element;
 108 }
 109
 110 static inline const char *qeth_get_cardname(struct qeth_card *card)
 111 {
 112         if (card->info.guestlan) {
 113                 switch (card->info.type) {
 114                 case QETH_CARD_TYPE_OSAE:
 115                         return " Guest LAN QDIO";
 116                 case QETH_CARD_TYPE_IQD:
 117                         return " Guest LAN Hiper";
 118                 default:
 119                         return " unknown";
 120                 }
 121         } else {
 122                 switch (card->info.type) {
 123                 case QETH_CARD_TYPE_OSAE:
 124                         return " OSD Express";
 125                 case QETH_CARD_TYPE_IQD:
 126                         return " HiperSockets";
 127                 case QETH_CARD_TYPE_OSN:
 128                         return " OSN QDIO";
 129                 default:
 130                         return " unknown";
 131                 }
 132         }
 133         return " n/a";
 134 }
 135
 136 /* max length to be returned: 14 */
 137 const char *qeth_get_cardname_short(struct qeth_card *card)
 138 {
 139         if (card->info.guestlan) {
 140                 switch (card->info.type) {
 141                 case QETH_CARD_TYPE_OSAE:
 142                         return "GuestLAN QDIO";
 143                 case QETH_CARD_TYPE_IQD:
 144                         return "GuestLAN Hiper";
 145                 default:
 146                         return "unknown";
 147                 }
 148         } else {
 149                 switch (card->info.type) {
 150                 case QETH_CARD_TYPE_OSAE:
 151                         switch (card->info.link_type) {
 152                         case QETH_LINK_TYPE_FAST_ETH:
 153                                 return "OSD_100";
 154                         case QETH_LINK_TYPE_HSTR:
 155                                 return "HSTR";
 156                         case QETH_LINK_TYPE_GBIT_ETH:
 157                                 return "OSD_1000";
 158                         case QETH_LINK_TYPE_10GBIT_ETH:
 159                                 return "OSD_10GIG";
 160                         case QETH_LINK_TYPE_LANE_ETH100:
 161                                 return "OSD_FE_LANE";
 162                         case QETH_LINK_TYPE_LANE_TR:
 163                                 return "OSD_TR_LANE";
 164                         case QETH_LINK_TYPE_LANE_ETH1000:
 165                                 return "OSD_GbE_LANE";
 166                         case QETH_LINK_TYPE_LANE:
 167                                 return "OSD_ATM_LANE";
 168                         default:
 169                                 return "OSD_Express";
 170                         }
 171                 case QETH_CARD_TYPE_IQD:
 172                         return "HiperSockets";
 173                 case QETH_CARD_TYPE_OSN:
 174                         return "OSN";
 175                 default:
 176                         return "unknown";
 177                 }
 178         }
 179         return "n/a";
 180 }
 181
 182 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 183                          int clear_start_mask)
 184 {
 185         unsigned long flags;
 186
 187         spin_lock_irqsave(&card->thread_mask_lock, flags);
 188         card->thread_allowed_mask = threads;
 189         if (clear_start_mask)
 190                 card->thread_start_mask &= threads;
 191         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 192         wake_up(&card->wait_q);
 193 }
 194 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 195
 196 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 197 {
 198         unsigned long flags;
 199         int rc = 0;
 200
 201         spin_lock_irqsave(&card->thread_mask_lock, flags);
 202         rc = (card->thread_running_mask & threads);
 203         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 204         return rc;
 205 }
 206 EXPORT_SYMBOL_GPL(qeth_threads_running);
 207
 208 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 209 {
 210         return wait_event_interruptible(card->wait_q,
 211                         qeth_threads_running(card, threads) == 0);
 212 }
 213 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 214
 215 void qeth_clear_working_pool_list(struct qeth_card *card)
 216 {
 217         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 218
 219         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 220         list_for_each_entry_safe(pool_entry, tmp,
 221                             &card->qdio.in_buf_pool.entry_list, list){
 222                         list_del(&pool_entry->list);
 223         }
 224 }
 225 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 226
 227 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 228 {
 229         struct qeth_buffer_pool_entry *pool_entry;
 230         void *ptr;
 231         int i, j;
 232
 233         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 234         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 235                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 236                 if (!pool_entry) {
 237                         qeth_free_buffer_pool(card);
 238                         return -ENOMEM;
 239                 }
 240                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 241                         ptr = (void *) __get_free_page(GFP_KERNEL);
 242                         if (!ptr) {
 243                                 while (j > 0)
 244                                         free_page((unsigned long)
 245                                                   pool_entry->elements[--j]);
 246                                 kfree(pool_entry);
 247                                 qeth_free_buffer_pool(card);
 248                                 return -ENOMEM;
 249                         }
 250                         pool_entry->elements[j] = ptr;
 251                 }
 252                 list_add(&pool_entry->init_list,
 253                          &card->qdio.init_pool.entry_list);
 254         }
 255         return 0;
 256 }
 257
 258 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 259 {
 260         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 261
 262         if ((card->state != CARD_STATE_DOWN) &&
 263             (card->state != CARD_STATE_RECOVER))
 264                 return -EPERM;
 265
 266         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 267         qeth_clear_working_pool_list(card);
 268         qeth_free_buffer_pool(card);
 269         card->qdio.in_buf_pool.buf_count = bufcnt;
 270         card->qdio.init_pool.buf_count = bufcnt;
 271         return qeth_alloc_buffer_pool(card);
 272 }
 273
 274 int qeth_set_large_send(struct qeth_card *card,
 275                 enum qeth_large_send_types type)
 276 {
 277         int rc = 0;
 278
 279         if (card->dev == NULL) {
 280                 card->options.large_send = type;
 281                 return 0;
 282         }
 283         if (card->state == CARD_STATE_UP)
 284                 netif_tx_disable(card->dev);
 285         card->options.large_send = type;
 286         switch (card->options.large_send) {
 287         case QETH_LARGE_SEND_EDDP:
 288                 card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 289                                         NETIF_F_HW_CSUM;
 290                 break;
 291         case QETH_LARGE_SEND_TSO:
 292                 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
 293                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 294                                                 NETIF_F_HW_CSUM;
 295                 } else {
 296                         PRINT_WARN("TSO not supported on %s. "
 297                                    "large_send set to 'no'.\n",
 298                                    card->dev->name);
 299                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 300                                                 NETIF_F_HW_CSUM);
 301                         card->options.large_send = QETH_LARGE_SEND_NO;
 302                         rc = -EOPNOTSUPP;
 303                 }
 304                 break;
 305         default: /* includes QETH_LARGE_SEND_NO */
 306                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 307                                         NETIF_F_HW_CSUM);
 308                 break;
 309         }
 310         if (card->state == CARD_STATE_UP)
 311                 netif_wake_queue(card->dev);
 312         return rc;
 313 }
 314 EXPORT_SYMBOL_GPL(qeth_set_large_send);
 315
 316 static int qeth_issue_next_read(struct qeth_card *card)
 317 {
 318         int rc;
 319         struct qeth_cmd_buffer *iob;
 320
 321         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 322         if (card->read.state != CH_STATE_UP)
 323                 return -EIO;
 324         iob = qeth_get_buffer(&card->read);
 325         if (!iob) {
 326                 PRINT_WARN("issue_next_read failed: no iob available!\n");
 327                 return -ENOMEM;
 328         }
 329         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 330         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 331         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 332                               (addr_t) iob, 0, 0);
 333         if (rc) {
 334                 PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
 335                 atomic_set(&card->read.irq_pending, 0);
 336                 qeth_schedule_recovery(card);
 337                 wake_up(&card->wait_q);
 338         }
 339         return rc;
 340 }
 341
 342 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 343 {
 344         struct qeth_reply *reply;
 345
 346         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 347         if (reply) {
 348                 atomic_set(&reply->refcnt, 1);
 349                 atomic_set(&reply->received, 0);
 350                 reply->card = card;
 351         };
 352         return reply;
 353 }
 354
 355 static void qeth_get_reply(struct qeth_reply *reply)
 356 {
 357         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 358         atomic_inc(&reply->refcnt);
 359 }
 360
 361 static void qeth_put_reply(struct qeth_reply *reply)
 362 {
 363         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 364         if (atomic_dec_and_test(&reply->refcnt))
 365                 kfree(reply);
 366 }
 367
 368 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 369                 struct qeth_card *card)
 370 {
 371         char *ipa_name;
 372         int com = cmd->hdr.command;
 373         ipa_name = qeth_get_ipa_cmd_name(com);
 374         if (rc)
 375                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 376                                 ipa_name, com, QETH_CARD_IFNAME(card),
 377                                         rc, qeth_get_ipa_msg(rc));
 378         else
 379                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 380                                 ipa_name, com, QETH_CARD_IFNAME(card));
 381 }
 382
 383 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 384                 struct qeth_cmd_buffer *iob)
 385 {
 386         struct qeth_ipa_cmd *cmd = NULL;
 387
 388         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 389         if (IS_IPA(iob->data)) {
 390                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 391                 if (IS_IPA_REPLY(cmd)) {
 392                         if (cmd->hdr.command < IPA_CMD_SETCCID ||
 393                             cmd->hdr.command > IPA_CMD_MODCCID)
 394                                 qeth_issue_ipa_msg(cmd,
 395                                                 cmd->hdr.return_code, card);
 396                         return cmd;
 397                 } else {
 398                         switch (cmd->hdr.command) {
 399                         case IPA_CMD_STOPLAN:
 400                                 PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
 401                                            "there is a network problem or "
 402                                            "someone pulled the cable or "
 403                                            "disabled the port.\n",
 404                                            QETH_CARD_IFNAME(card),
 405                                            card->info.chpid);
 406                                 card->lan_online = 0;
 407                                 if (card->dev && netif_carrier_ok(card->dev))
 408                                         netif_carrier_off(card->dev);
 409                                 return NULL;
 410                         case IPA_CMD_STARTLAN:
 411                                 PRINT_INFO("Link reestablished on %s "
 412                                            "(CHPID 0x%X). Scheduling "
 413                                            "IP address reset.\n",
 414                                            QETH_CARD_IFNAME(card),
 415                                            card->info.chpid);
 416                                 netif_carrier_on(card->dev);
 417                                 card->lan_online = 1;
 418                                 qeth_schedule_recovery(card);
 419                                 return NULL;
 420                         case IPA_CMD_MODCCID:
 421                                 return cmd;
 422                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 423                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 424                                 break;
 425                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 426                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 427                                 break;
 428                         default:
 429                                 PRINT_WARN("Received data is IPA "
 430                                            "but not a reply!\n");
 431                                 break;
 432                         }
 433                 }
 434         }
 435         return cmd;
 436 }
 437
 438 void qeth_clear_ipacmd_list(struct qeth_card *card)
 439 {
 440         struct qeth_reply *reply, *r;
 441         unsigned long flags;
 442
 443         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 444
 445         spin_lock_irqsave(&card->lock, flags);
 446         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 447                 qeth_get_reply(reply);
 448                 reply->rc = -EIO;
 449                 atomic_inc(&reply->received);
 450                 list_del_init(&reply->list);
 451                 wake_up(&reply->wait_q);
 452                 qeth_put_reply(reply);
 453         }
 454         spin_unlock_irqrestore(&card->lock, flags);
 455 }
 456 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 457
 458 static int qeth_check_idx_response(unsigned char *buffer)
 459 {
 460         if (!buffer)
 461                 return 0;
 462
 463         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 464         if ((buffer[2] & 0xc0) == 0xc0) {
 465                 PRINT_WARN("received an IDX TERMINATE "
 466                            "with cause code 0x%02x%s\n",
 467                            buffer[4],
 468                            ((buffer[4] == 0x22) ?
 469                             " -- try another portname" : ""));
 470                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 471                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 472                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 473                 return -EIO;
 474         }
 475         return 0;
 476 }
 477
 478 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 479                 __u32 len)
 480 {
 481         struct qeth_card *card;
 482
 483         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 484         card = CARD_FROM_CDEV(channel->ccwdev);
 485         if (channel == &card->read)
 486                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 487         else
 488                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 489         channel->ccw.count = len;
 490         channel->ccw.cda = (__u32) __pa(iob);
 491 }
 492
 493 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 494 {
 495         __u8 index;
 496
 497         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 498         index = channel->io_buf_no;
 499         do {
 500                 if (channel->iob[index].state == BUF_STATE_FREE) {
 501                         channel->iob[index].state = BUF_STATE_LOCKED;
 502                         channel->io_buf_no = (channel->io_buf_no + 1) %
 503                                 QETH_CMD_BUFFER_NO;
 504                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 505                         return channel->iob + index;
 506                 }
 507                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 508         } while (index != channel->io_buf_no);
 509
 510         return NULL;
 511 }
 512
 513 void qeth_release_buffer(struct qeth_channel *channel,
 514                 struct qeth_cmd_buffer *iob)
 515 {
 516         unsigned long flags;
 517
 518         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 519         spin_lock_irqsave(&channel->iob_lock, flags);
 520         memset(iob->data, 0, QETH_BUFSIZE);
 521         iob->state = BUF_STATE_FREE;
 522         iob->callback = qeth_send_control_data_cb;
 523         iob->rc = 0;
 524         spin_unlock_irqrestore(&channel->iob_lock, flags);
 525 }
 526 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 527
 528 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 529 {
 530         struct qeth_cmd_buffer *buffer = NULL;
 531         unsigned long flags;
 532
 533         spin_lock_irqsave(&channel->iob_lock, flags);
 534         buffer = __qeth_get_buffer(channel);
 535         spin_unlock_irqrestore(&channel->iob_lock, flags);
 536         return buffer;
 537 }
 538
 539 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 540 {
 541         struct qeth_cmd_buffer *buffer;
 542         wait_event(channel->wait_q,
 543                    ((buffer = qeth_get_buffer(channel)) != NULL));
 544         return buffer;
 545 }
 546 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 547
 548 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 549 {
 550         int cnt;
 551
 552         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 553                 qeth_release_buffer(channel, &channel->iob[cnt]);
 554         channel->buf_no = 0;
 555         channel->io_buf_no = 0;
 556 }
 557 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 558
 559 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 560                   struct qeth_cmd_buffer *iob)
 561 {
 562         struct qeth_card *card;
 563         struct qeth_reply *reply, *r;
 564         struct qeth_ipa_cmd *cmd;
 565         unsigned long flags;
 566         int keep_reply;
 567
 568         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 569
 570         card = CARD_FROM_CDEV(channel->ccwdev);
 571         if (qeth_check_idx_response(iob->data)) {
 572                 qeth_clear_ipacmd_list(card);
 573                 qeth_schedule_recovery(card);
 574                 goto out;
 575         }
 576
 577         cmd = qeth_check_ipa_data(card, iob);
 578         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 579                 goto out;
 580         /*in case of OSN : check if cmd is set */
 581         if (card->info.type == QETH_CARD_TYPE_OSN &&
 582             cmd &&
 583             cmd->hdr.command != IPA_CMD_STARTLAN &&
 584             card->osn_info.assist_cb != NULL) {
 585                 card->osn_info.assist_cb(card->dev, cmd);
 586                 goto out;
 587         }
 588
 589         spin_lock_irqsave(&card->lock, flags);
 590         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 591                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 592                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 593                         qeth_get_reply(reply);
 594                         list_del_init(&reply->list);
 595                         spin_unlock_irqrestore(&card->lock, flags);
 596                         keep_reply = 0;
 597                         if (reply->callback != NULL) {
 598                                 if (cmd) {
 599                                         reply->offset = (__u16)((char *)cmd -
 600                                                         (char *)iob->data);
 601                                         keep_reply = reply->callback(card,
 602                                                         reply,
 603                                                         (unsigned long)cmd);
 604                                 } else
 605                                         keep_reply = reply->callback(card,
 606                                                         reply,
 607                                                         (unsigned long)iob);
 608                         }
 609                         if (cmd)
 610                                 reply->rc = (u16) cmd->hdr.return_code;
 611                         else if (iob->rc)
 612                                 reply->rc = iob->rc;
 613                         if (keep_reply) {
 614                                 spin_lock_irqsave(&card->lock, flags);
 615                                 list_add_tail(&reply->list,
 616                                               &card->cmd_waiter_list);
 617                                 spin_unlock_irqrestore(&card->lock, flags);
 618                         } else {
 619                                 atomic_inc(&reply->received);
 620                                 wake_up(&reply->wait_q);
 621                         }
 622                         qeth_put_reply(reply);
 623                         goto out;
 624                 }
 625         }
 626         spin_unlock_irqrestore(&card->lock, flags);
 627 out:
 628         memcpy(&card->seqno.pdu_hdr_ack,
 629                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 630                 QETH_SEQ_NO_LENGTH);
 631         qeth_release_buffer(channel, iob);
 632 }
 633
 634 static int qeth_setup_channel(struct qeth_channel *channel)
 635 {
 636         int cnt;
 637
 638         QETH_DBF_TEXT(SETUP, 2, "setupch");
 639         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 640                 channel->iob[cnt].data = (char *)
 641                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 642                 if (channel->iob[cnt].data == NULL)
 643                         break;
 644                 channel->iob[cnt].state = BUF_STATE_FREE;
 645                 channel->iob[cnt].channel = channel;
 646                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 647                 channel->iob[cnt].rc = 0;
 648         }
 649         if (cnt < QETH_CMD_BUFFER_NO) {
 650                 while (cnt-- > 0)
 651                         kfree(channel->iob[cnt].data);
 652                 return -ENOMEM;
 653         }
 654         channel->buf_no = 0;
 655         channel->io_buf_no = 0;
 656         atomic_set(&channel->irq_pending, 0);
 657         spin_lock_init(&channel->iob_lock);
 658
 659         init_waitqueue_head(&channel->wait_q);
 660         return 0;
 661 }
 662
 663 static int qeth_set_thread_start_bit(struct qeth_card *card,
 664                 unsigned long thread)
 665 {
 666         unsigned long flags;
 667
 668         spin_lock_irqsave(&card->thread_mask_lock, flags);
 669         if (!(card->thread_allowed_mask & thread) ||
 670               (card->thread_start_mask & thread)) {
 671                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 672                 return -EPERM;
 673         }
 674         card->thread_start_mask |= thread;
 675         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 676         return 0;
 677 }
 678
 679 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 680 {
 681         unsigned long flags;
 682
 683         spin_lock_irqsave(&card->thread_mask_lock, flags);
 684         card->thread_start_mask &= ~thread;
 685         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 686         wake_up(&card->wait_q);
 687 }
 688 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 689
 690 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 691 {
 692         unsigned long flags;
 693
 694         spin_lock_irqsave(&card->thread_mask_lock, flags);
 695         card->thread_running_mask &= ~thread;
 696         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 697         wake_up(&card->wait_q);
 698 }
 699 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 700
 701 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 702 {
 703         unsigned long flags;
 704         int rc = 0;
 705
 706         spin_lock_irqsave(&card->thread_mask_lock, flags);
 707         if (card->thread_start_mask & thread) {
 708                 if ((card->thread_allowed_mask & thread) &&
 709                     !(card->thread_running_mask & thread)) {
 710                         rc = 1;
 711                         card->thread_start_mask &= ~thread;
 712                         card->thread_running_mask |= thread;
 713                 } else
 714                         rc = -EPERM;
 715         }
 716         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 717         return rc;
 718 }
 719
 720 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 721 {
 722         int rc = 0;
 723
 724         wait_event(card->wait_q,
 725                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 726         return rc;
 727 }
 728 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 729
 730 void qeth_schedule_recovery(struct qeth_card *card)
 731 {
 732         QETH_DBF_TEXT(TRACE, 2, "startrec");
 733         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 734                 schedule_work(&card->kernel_thread_starter);
 735 }
 736 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 737
 738 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 739 {
 740         int dstat, cstat;
 741         char *sense;
 742
 743         sense = (char *) irb->ecw;
 744         cstat = irb->scsw.cstat;
 745         dstat = irb->scsw.dstat;
 746
 747         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 748                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 749                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 750                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 751                 PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
 752                            cdev->dev.bus_id, dstat, cstat);
 753                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 754                                 16, 1, irb, 64, 1);
 755                 return 1;
 756         }
 757
 758         if (dstat & DEV_STAT_UNIT_CHECK) {
 759                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 760                     SENSE_RESETTING_EVENT_FLAG) {
 761                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 762                         return 1;
 763                 }
 764                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 765                     SENSE_COMMAND_REJECT_FLAG) {
 766                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 767                         return 0;
 768                 }
 769                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 770                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 771                         return 1;
 772                 }
 773                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 774                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 775                         return 0;
 776                 }
 777                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 778                         return 1;
 779         }
 780         return 0;
 781 }
 782
 783 static long __qeth_check_irb_error(struct ccw_device *cdev,
 784                 unsigned long intparm, struct irb *irb)
 785 {
 786         if (!IS_ERR(irb))
 787                 return 0;
 788
 789         switch (PTR_ERR(irb)) {
 790         case -EIO:
 791                 PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
 792                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 793                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 794                 break;
 795         case -ETIMEDOUT:
 796                 PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
 797                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 798                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
 799                 if (intparm == QETH_RCD_PARM) {
 800                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 801
 802                         if (card && (card->data.ccwdev == cdev)) {
 803                                 card->data.state = CH_STATE_DOWN;
 804                                 wake_up(&card->wait_q);
 805                         }
 806                 }
 807                 break;
 808         default:
 809                 PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
 810                            cdev->dev.bus_id);
 811                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 812                 QETH_DBF_TEXT(TRACE, 2, "  rc???");
 813         }
 814         return PTR_ERR(irb);
 815 }
 816
 817 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 818                 struct irb *irb)
 819 {
 820         int rc;
 821         int cstat, dstat;
 822         struct qeth_cmd_buffer *buffer;
 823         struct qeth_channel *channel;
 824         struct qeth_card *card;
 825         struct qeth_cmd_buffer *iob;
 826         __u8 index;
 827
 828         QETH_DBF_TEXT(TRACE, 5, "irq");
 829
 830         if (__qeth_check_irb_error(cdev, intparm, irb))
 831                 return;
 832         cstat = irb->scsw.cstat;
 833         dstat = irb->scsw.dstat;
 834
 835         card = CARD_FROM_CDEV(cdev);
 836         if (!card)
 837                 return;
 838
 839         if (card->read.ccwdev == cdev) {
 840                 channel = &card->read;
 841                 QETH_DBF_TEXT(TRACE, 5, "read");
 842         } else if (card->write.ccwdev == cdev) {
 843                 channel = &card->write;
 844                 QETH_DBF_TEXT(TRACE, 5, "write");
 845         } else {
 846                 channel = &card->data;
 847                 QETH_DBF_TEXT(TRACE, 5, "data");
 848         }
 849         atomic_set(&channel->irq_pending, 0);
 850
 851         if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
 852                 channel->state = CH_STATE_STOPPED;
 853
 854         if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
 855                 channel->state = CH_STATE_HALTED;
 856
 857         /*let's wake up immediately on data channel*/
 858         if ((channel == &card->data) && (intparm != 0) &&
 859             (intparm != QETH_RCD_PARM))
 860                 goto out;
 861
 862         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 863                 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
 864                 /* we don't have to handle this further */
 865                 intparm = 0;
 866         }
 867         if (intparm == QETH_HALT_CHANNEL_PARM) {
 868                 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
 869                 /* we don't have to handle this further */
 870                 intparm = 0;
 871         }
 872         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 873             (dstat & DEV_STAT_UNIT_CHECK) ||
 874             (cstat)) {
 875                 if (irb->esw.esw0.erw.cons) {
 876                         /* TODO: we should make this s390dbf */
 877                         PRINT_WARN("sense data available on channel %s.\n",
 878                                    CHANNEL_ID(channel));
 879                         PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat);
 880                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 881                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 882                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 883                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 884                 }
 885                 if (intparm == QETH_RCD_PARM) {
 886                         channel->state = CH_STATE_DOWN;
 887                         goto out;
 888                 }
 889                 rc = qeth_get_problem(cdev, irb);
 890                 if (rc) {
 891                         qeth_schedule_recovery(card);
 892                         goto out;
 893                 }
 894         }
 895
 896         if (intparm == QETH_RCD_PARM) {
 897                 channel->state = CH_STATE_RCD_DONE;
 898                 goto out;
 899         }
 900         if (intparm) {
 901                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 902                 buffer->state = BUF_STATE_PROCESSED;
 903         }
 904         if (channel == &card->data)
 905                 return;
 906         if (channel == &card->read &&
 907             channel->state == CH_STATE_UP)
 908                 qeth_issue_next_read(card);
 909
 910         iob = channel->iob;
 911         index = channel->buf_no;
 912         while (iob[index].state == BUF_STATE_PROCESSED) {
 913                 if (iob[index].callback != NULL)
 914                         iob[index].callback(channel, iob + index);
 915
 916                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 917         }
 918         channel->buf_no = index;
 919 out:
 920         wake_up(&card->wait_q);
 921         return;
 922 }
 923
 924 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 925                  struct qeth_qdio_out_buffer *buf)
 926 {
 927         int i;
 928         struct sk_buff *skb;
 929
 930         /* is PCI flag set on buffer? */
 931         if (buf->buffer->element[0].flags & 0x40)
 932                 atomic_dec(&queue->set_pci_flags_count);
 933
 934         skb = skb_dequeue(&buf->skb_list);
 935         while (skb) {
 936                 atomic_dec(&skb->users);
 937                 dev_kfree_skb_any(skb);
 938                 skb = skb_dequeue(&buf->skb_list);
 939         }
 940         qeth_eddp_buf_release_contexts(buf);
 941         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 942                 buf->buffer->element[i].length = 0;
 943                 buf->buffer->element[i].addr = NULL;
 944                 buf->buffer->element[i].flags = 0;
 945         }
 946         buf->next_element_to_fill = 0;
 947         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 948 }
 949
 950 void qeth_clear_qdio_buffers(struct qeth_card *card)
 951 {
 952         int i, j;
 953
 954         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 955         /* clear outbound buffers to free skbs */
 956         for (i = 0; i < card->qdio.no_out_queues; ++i)
 957                 if (card->qdio.out_qs[i]) {
 958                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 959                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 960                                                 &card->qdio.out_qs[i]->bufs[j]);
 961                 }
 962 }
 963 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 964
 965 static void qeth_free_buffer_pool(struct qeth_card *card)
 966 {
 967         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 968         int i = 0;
 969         QETH_DBF_TEXT(TRACE, 5, "freepool");
 970         list_for_each_entry_safe(pool_entry, tmp,
 971                                  &card->qdio.init_pool.entry_list, init_list){
 972                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 973                         free_page((unsigned long)pool_entry->elements[i]);
 974                 list_del(&pool_entry->init_list);
 975                 kfree(pool_entry);
 976         }
 977 }
 978
 979 static void qeth_free_qdio_buffers(struct qeth_card *card)
 980 {
 981         int i, j;
 982
 983         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
 984         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 985                 QETH_QDIO_UNINITIALIZED)
 986                 return;
 987         kfree(card->qdio.in_q);
 988         card->qdio.in_q = NULL;
 989         /* inbound buffer pool */
 990         qeth_free_buffer_pool(card);
 991         /* free outbound qdio_qs */
 992         if (card->qdio.out_qs) {
 993                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 994                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 995                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 996                                                 &card->qdio.out_qs[i]->bufs[j]);
 997                         kfree(card->qdio.out_qs[i]);
 998                 }
 999                 kfree(card->qdio.out_qs);
1000                 card->qdio.out_qs = NULL;
1001         }
1002 }
1003
1004 static void qeth_clean_channel(struct qeth_channel *channel)
1005 {
1006         int cnt;
1007
1008         QETH_DBF_TEXT(SETUP, 2, "freech");
1009         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1010                 kfree(channel->iob[cnt].data);
1011 }
1012
1013 static int qeth_is_1920_device(struct qeth_card *card)
1014 {
1015         int single_queue = 0;
1016         struct ccw_device *ccwdev;
1017         struct channelPath_dsc {
1018                 u8 flags;
1019                 u8 lsn;
1020                 u8 desc;
1021                 u8 chpid;
1022                 u8 swla;
1023                 u8 zeroes;
1024                 u8 chla;
1025                 u8 chpp;
1026         } *chp_dsc;
1027
1028         QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1029
1030         ccwdev = card->data.ccwdev;
1031         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1032         if (chp_dsc != NULL) {
1033                 /* CHPP field bit 6 == 1 -> single queue */
1034                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1035                 kfree(chp_dsc);
1036         }
1037         QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1038         return single_queue;
1039 }
1040
1041 static void qeth_init_qdio_info(struct qeth_card *card)
1042 {
1043         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1044         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1045         /* inbound */
1046         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1047         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1048         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1049         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1050         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1051 }
1052
1053 static void qeth_set_intial_options(struct qeth_card *card)
1054 {
1055         card->options.route4.type = NO_ROUTER;
1056         card->options.route6.type = NO_ROUTER;
1057         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1058         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1059         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1060         card->options.fake_broadcast = 0;
1061         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1062         card->options.fake_ll = 0;
1063         card->options.performance_stats = 0;
1064         card->options.rx_sg_cb = QETH_RX_SG_CB;
1065 }
1066
1067 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1068 {
1069         unsigned long flags;
1070         int rc = 0;
1071
1072         spin_lock_irqsave(&card->thread_mask_lock, flags);
1073         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1074                         (u8) card->thread_start_mask,
1075                         (u8) card->thread_allowed_mask,
1076                         (u8) card->thread_running_mask);
1077         rc = (card->thread_start_mask & thread);
1078         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1079         return rc;
1080 }
1081
1082 static void qeth_start_kernel_thread(struct work_struct *work)
1083 {
1084         struct qeth_card *card = container_of(work, struct qeth_card,
1085                                         kernel_thread_starter);
1086         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1087
1088         if (card->read.state != CH_STATE_UP &&
1089             card->write.state != CH_STATE_UP)
1090                 return;
1091         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1092                 kthread_run(card->discipline.recover, (void *) card,
1093                                 "qeth_recover");
1094 }
1095
1096 static int qeth_setup_card(struct qeth_card *card)
1097 {
1098
1099         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1100         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1101
1102         card->read.state  = CH_STATE_DOWN;
1103         card->write.state = CH_STATE_DOWN;
1104         card->data.state  = CH_STATE_DOWN;
1105         card->state = CARD_STATE_DOWN;
1106         card->lan_online = 0;
1107         card->use_hard_stop = 0;
1108         card->dev = NULL;
1109         spin_lock_init(&card->vlanlock);
1110         spin_lock_init(&card->mclock);
1111         card->vlangrp = NULL;
1112         spin_lock_init(&card->lock);
1113         spin_lock_init(&card->ip_lock);
1114         spin_lock_init(&card->thread_mask_lock);
1115         card->thread_start_mask = 0;
1116         card->thread_allowed_mask = 0;
1117         card->thread_running_mask = 0;
1118         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1119         INIT_LIST_HEAD(&card->ip_list);
1120         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1121         if (!card->ip_tbd_list) {
1122                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1123                 return -ENOMEM;
1124         }
1125         INIT_LIST_HEAD(card->ip_tbd_list);
1126         INIT_LIST_HEAD(&card->cmd_waiter_list);
1127         init_waitqueue_head(&card->wait_q);
1128         /* intial options */
1129         qeth_set_intial_options(card);
1130         /* IP address takeover */
1131         INIT_LIST_HEAD(&card->ipato.entries);
1132         card->ipato.enabled = 0;
1133         card->ipato.invert4 = 0;
1134         card->ipato.invert6 = 0;
1135         /* init QDIO stuff */
1136         qeth_init_qdio_info(card);
1137         return 0;
1138 }
1139
1140 static struct qeth_card *qeth_alloc_card(void)
1141 {
1142         struct qeth_card *card;
1143
1144         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1145         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1146         if (!card)
1147                 return NULL;
1148         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1149         if (qeth_setup_channel(&card->read)) {
1150                 kfree(card);
1151                 return NULL;
1152         }
1153         if (qeth_setup_channel(&card->write)) {
1154                 qeth_clean_channel(&card->read);
1155                 kfree(card);
1156                 return NULL;
1157         }
1158         card->options.layer2 = -1;
1159         return card;
1160 }
1161
1162 static int qeth_determine_card_type(struct qeth_card *card)
1163 {
1164         int i = 0;
1165
1166         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1167
1168         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1169         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1170         while (known_devices[i][4]) {
1171                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1172                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1173                         card->info.type = known_devices[i][4];
1174                         card->qdio.no_out_queues = known_devices[i][8];
1175                         card->info.is_multicast_different = known_devices[i][9];
1176                         if (qeth_is_1920_device(card)) {
1177                                 PRINT_INFO("Priority Queueing not able "
1178                                            "due to hardware limitations!\n");
1179                                 card->qdio.no_out_queues = 1;
1180                                 card->qdio.default_out_queue = 0;
1181                         }
1182                         return 0;
1183                 }
1184                 i++;
1185         }
1186         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1187         PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
1188         return -ENOENT;
1189 }
1190
1191 static int qeth_clear_channel(struct qeth_channel *channel)
1192 {
1193         unsigned long flags;
1194         struct qeth_card *card;
1195         int rc;
1196
1197         QETH_DBF_TEXT(TRACE, 3, "clearch");
1198         card = CARD_FROM_CDEV(channel->ccwdev);
1199         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1200         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1201         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1202
1203         if (rc)
1204                 return rc;
1205         rc = wait_event_interruptible_timeout(card->wait_q,
1206                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1207         if (rc == -ERESTARTSYS)
1208                 return rc;
1209         if (channel->state != CH_STATE_STOPPED)
1210                 return -ETIME;
1211         channel->state = CH_STATE_DOWN;
1212         return 0;
1213 }
1214
1215 static int qeth_halt_channel(struct qeth_channel *channel)
1216 {
1217         unsigned long flags;
1218         struct qeth_card *card;
1219         int rc;
1220
1221         QETH_DBF_TEXT(TRACE, 3, "haltch");
1222         card = CARD_FROM_CDEV(channel->ccwdev);
1223         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1224         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1225         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1226
1227         if (rc)
1228                 return rc;
1229         rc = wait_event_interruptible_timeout(card->wait_q,
1230                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1231         if (rc == -ERESTARTSYS)
1232                 return rc;
1233         if (channel->state != CH_STATE_HALTED)
1234                 return -ETIME;
1235         return 0;
1236 }
1237
1238 static int qeth_halt_channels(struct qeth_card *card)
1239 {
1240         int rc1 = 0, rc2 = 0, rc3 = 0;
1241
1242         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1243         rc1 = qeth_halt_channel(&card->read);
1244         rc2 = qeth_halt_channel(&card->write);
1245         rc3 = qeth_halt_channel(&card->data);
1246         if (rc1)
1247                 return rc1;
1248         if (rc2)
1249                 return rc2;
1250         return rc3;
1251 }
1252
1253 static int qeth_clear_channels(struct qeth_card *card)
1254 {
1255         int rc1 = 0, rc2 = 0, rc3 = 0;
1256
1257         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1258         rc1 = qeth_clear_channel(&card->read);
1259         rc2 = qeth_clear_channel(&card->write);
1260         rc3 = qeth_clear_channel(&card->data);
1261         if (rc1)
1262                 return rc1;
1263         if (rc2)
1264                 return rc2;
1265         return rc3;
1266 }
1267
1268 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1269 {
1270         int rc = 0;
1271
1272         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1273         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1274
1275         if (halt)
1276                 rc = qeth_halt_channels(card);
1277         if (rc)
1278                 return rc;
1279         return qeth_clear_channels(card);
1280 }
1281
1282 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1283 {
1284         int rc = 0;
1285
1286         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1287         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1288                 QETH_QDIO_CLEANING)) {
1289         case QETH_QDIO_ESTABLISHED:
1290                 if (card->info.type == QETH_CARD_TYPE_IQD)
1291                         rc = qdio_cleanup(CARD_DDEV(card),
1292                                 QDIO_FLAG_CLEANUP_USING_HALT);
1293                 else
1294                         rc = qdio_cleanup(CARD_DDEV(card),
1295                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1296                 if (rc)
1297                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1298                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1299                 break;
1300         case QETH_QDIO_CLEANING:
1301                 return rc;
1302         default:
1303                 break;
1304         }
1305         rc = qeth_clear_halt_card(card, use_halt);
1306         if (rc)
1307                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1308         card->state = CARD_STATE_DOWN;
1309         return rc;
1310 }
1311 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1312
1313 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1314                                int *length)
1315 {
1316         struct ciw *ciw;
1317         char *rcd_buf;
1318         int ret;
1319         struct qeth_channel *channel = &card->data;
1320         unsigned long flags;
1321
1322         /*
1323          * scan for RCD command in extended SenseID data
1324          */
1325         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1326         if (!ciw || ciw->cmd == 0)
1327                 return -EOPNOTSUPP;
1328         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1329         if (!rcd_buf)
1330                 return -ENOMEM;
1331
1332         channel->ccw.cmd_code = ciw->cmd;
1333         channel->ccw.cda = (__u32) __pa(rcd_buf);
1334         channel->ccw.count = ciw->count;
1335         channel->ccw.flags = CCW_FLAG_SLI;
1336         channel->state = CH_STATE_RCD;
1337         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1338         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1339                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1340                                        QETH_RCD_TIMEOUT);
1341         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1342         if (!ret)
1343                 wait_event(card->wait_q,
1344                            (channel->state == CH_STATE_RCD_DONE ||
1345                             channel->state == CH_STATE_DOWN));
1346         if (channel->state == CH_STATE_DOWN)
1347                 ret = -EIO;
1348         else
1349                 channel->state = CH_STATE_DOWN;
1350         if (ret) {
1351                 kfree(rcd_buf);
1352                 *buffer = NULL;
1353                 *length = 0;
1354         } else {
1355                 *length = ciw->count;
1356                 *buffer = rcd_buf;
1357         }
1358         return ret;
1359 }
1360
1361 static int qeth_get_unitaddr(struct qeth_card *card)
1362 {
1363         int length;
1364         char *prcd;
1365         int rc;
1366
1367         QETH_DBF_TEXT(SETUP, 2, "getunit");
1368         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1369         if (rc) {
1370                 PRINT_ERR("qeth_read_conf_data for device %s returned %i\n",
1371                         CARD_DDEV_ID(card), rc);
1372                 return rc;
1373         }
1374         card->info.chpid = prcd[30];
1375         card->info.unit_addr2 = prcd[31];
1376         card->info.cula = prcd[63];
1377         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1378                                (prcd[0x11] == _ascebc['M']));
1379         kfree(prcd);
1380         return 0;
1381 }
1382
1383 static void qeth_init_tokens(struct qeth_card *card)
1384 {
1385         card->token.issuer_rm_w = 0x00010103UL;
1386         card->token.cm_filter_w = 0x00010108UL;
1387         card->token.cm_connection_w = 0x0001010aUL;
1388         card->token.ulp_filter_w = 0x0001010bUL;
1389         card->token.ulp_connection_w = 0x0001010dUL;
1390 }
1391
1392 static void qeth_init_func_level(struct qeth_card *card)
1393 {
1394         if (card->ipato.enabled) {
1395                 if (card->info.type == QETH_CARD_TYPE_IQD)
1396                                 card->info.func_level =
1397                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1398                 else
1399                                 card->info.func_level =
1400                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1401         } else {
1402                 if (card->info.type == QETH_CARD_TYPE_IQD)
1403                 /*FIXME:why do we have same values for  dis and ena for
1404                   osae??? */
1405                         card->info.func_level =
1406                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1407                 else
1408                         card->info.func_level =
1409                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1410         }
1411 }
1412
1413 static inline __u16 qeth_raw_devno_from_bus_id(char *id)
1414 {
1415         id += (strlen(id) - 4);
1416         return (__u16) simple_strtoul(id, &id, 16);
1417 }
1418
1419 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1420                 void (*idx_reply_cb)(struct qeth_channel *,
1421                         struct qeth_cmd_buffer *))
1422 {
1423         struct qeth_cmd_buffer *iob;
1424         unsigned long flags;
1425         int rc;
1426         struct qeth_card *card;
1427
1428         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1429         card = CARD_FROM_CDEV(channel->ccwdev);
1430         iob = qeth_get_buffer(channel);
1431         iob->callback = idx_reply_cb;
1432         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1433         channel->ccw.count = QETH_BUFSIZE;
1434         channel->ccw.cda = (__u32) __pa(iob->data);
1435
1436         wait_event(card->wait_q,
1437                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1438         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1439         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1440         rc = ccw_device_start(channel->ccwdev,
1441                               &channel->ccw, (addr_t) iob, 0, 0);
1442         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1443
1444         if (rc) {
1445                 PRINT_ERR("Error2 in activating channel rc=%d\n", rc);
1446                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1447                 atomic_set(&channel->irq_pending, 0);
1448                 wake_up(&card->wait_q);
1449                 return rc;
1450         }
1451         rc = wait_event_interruptible_timeout(card->wait_q,
1452                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1453         if (rc == -ERESTARTSYS)
1454                 return rc;
1455         if (channel->state != CH_STATE_UP) {
1456                 rc = -ETIME;
1457                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1458                 qeth_clear_cmd_buffers(channel);
1459         } else
1460                 rc = 0;
1461         return rc;
1462 }
1463
1464 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1465                 void (*idx_reply_cb)(struct qeth_channel *,
1466                         struct qeth_cmd_buffer *))
1467 {
1468         struct qeth_card *card;
1469         struct qeth_cmd_buffer *iob;
1470         unsigned long flags;
1471         __u16 temp;
1472         __u8 tmp;
1473         int rc;
1474
1475         card = CARD_FROM_CDEV(channel->ccwdev);
1476
1477         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1478
1479         iob = qeth_get_buffer(channel);
1480         iob->callback = idx_reply_cb;
1481         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1482         channel->ccw.count = IDX_ACTIVATE_SIZE;
1483         channel->ccw.cda = (__u32) __pa(iob->data);
1484         if (channel == &card->write) {
1485                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1486                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1487                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1488                 card->seqno.trans_hdr++;
1489         } else {
1490                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1491                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1492                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1493         }
1494         tmp = ((__u8)card->info.portno) | 0x80;
1495         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1496         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1497                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1498         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1499                &card->info.func_level, sizeof(__u16));
1500         temp = qeth_raw_devno_from_bus_id(CARD_DDEV_ID(card));
1501         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2);
1502         temp = (card->info.cula << 8) + card->info.unit_addr2;
1503         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1504
1505         wait_event(card->wait_q,
1506                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1507         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1508         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1509         rc = ccw_device_start(channel->ccwdev,
1510                               &channel->ccw, (addr_t) iob, 0, 0);
1511         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1512
1513         if (rc) {
1514                 PRINT_ERR("Error1 in activating channel. rc=%d\n", rc);
1515                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1516                 atomic_set(&channel->irq_pending, 0);
1517                 wake_up(&card->wait_q);
1518                 return rc;
1519         }
1520         rc = wait_event_interruptible_timeout(card->wait_q,
1521                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1522         if (rc == -ERESTARTSYS)
1523                 return rc;
1524         if (channel->state != CH_STATE_ACTIVATING) {
1525                 PRINT_WARN("IDX activate timed out!\n");
1526                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1527                 qeth_clear_cmd_buffers(channel);
1528                 return -ETIME;
1529         }
1530         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1531 }
1532
1533 static int qeth_peer_func_level(int level)
1534 {
1535         if ((level & 0xff) == 8)
1536                 return (level & 0xff) + 0x400;
1537         if (((level >> 8) & 3) == 1)
1538                 return (level & 0xff) + 0x200;
1539         return level;
1540 }
1541
1542 static void qeth_idx_write_cb(struct qeth_channel *channel,
1543                 struct qeth_cmd_buffer *iob)
1544 {
1545         struct qeth_card *card;
1546         __u16 temp;
1547
1548         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1549
1550         if (channel->state == CH_STATE_DOWN) {
1551                 channel->state = CH_STATE_ACTIVATING;
1552                 goto out;
1553         }
1554         card = CARD_FROM_CDEV(channel->ccwdev);
1555
1556         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1557                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1558                         PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
1559                                 "adapter exclusively used by another host\n",
1560                         CARD_WDEV_ID(card));
1561                 else
1562                         PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
1563                                 "negative reply\n", CARD_WDEV_ID(card));
1564                 goto out;
1565         }
1566         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1567         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1568                 PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
1569                            "function level mismatch "
1570                            "(sent: 0x%x, received: 0x%x)\n",
1571                            CARD_WDEV_ID(card), card->info.func_level, temp);
1572                 goto out;
1573         }
1574         channel->state = CH_STATE_UP;
1575 out:
1576         qeth_release_buffer(channel, iob);
1577 }
1578
1579 static void qeth_idx_read_cb(struct qeth_channel *channel,
1580                 struct qeth_cmd_buffer *iob)
1581 {
1582         struct qeth_card *card;
1583         __u16 temp;
1584
1585         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1586         if (channel->state == CH_STATE_DOWN) {
1587                 channel->state = CH_STATE_ACTIVATING;
1588                 goto out;
1589         }
1590
1591         card = CARD_FROM_CDEV(channel->ccwdev);
1592         if (qeth_check_idx_response(iob->data))
1593                         goto out;
1594
1595         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1596                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1597                         PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
1598                                 "adapter exclusively used by another host\n",
1599                                 CARD_RDEV_ID(card));
1600                 else
1601                         PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
1602                                 "negative reply\n", CARD_RDEV_ID(card));
1603                 goto out;
1604         }
1605
1606 /**
1607  * temporary fix for microcode bug
1608  * to revert it,replace OR by AND
1609  */
1610         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1611              (card->info.type == QETH_CARD_TYPE_OSAE))
1612                 card->info.portname_required = 1;
1613
1614         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1615         if (temp != qeth_peer_func_level(card->info.func_level)) {
1616                 PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
1617                            "level mismatch (sent: 0x%x, received: 0x%x)\n",
1618                            CARD_RDEV_ID(card), card->info.func_level, temp);
1619                 goto out;
1620         }
1621         memcpy(&card->token.issuer_rm_r,
1622                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1623                QETH_MPC_TOKEN_LENGTH);
1624         memcpy(&card->info.mcl_level[0],
1625                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1626         channel->state = CH_STATE_UP;
1627 out:
1628         qeth_release_buffer(channel, iob);
1629 }
1630
1631 void qeth_prepare_control_data(struct qeth_card *card, int len,
1632                 struct qeth_cmd_buffer *iob)
1633 {
1634         qeth_setup_ccw(&card->write, iob->data, len);
1635         iob->callback = qeth_release_buffer;
1636
1637         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1638                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1639         card->seqno.trans_hdr++;
1640         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1641                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1642         card->seqno.pdu_hdr++;
1643         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1644                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1645         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1646 }
1647 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1648
1649 int qeth_send_control_data(struct qeth_card *card, int len,
1650                 struct qeth_cmd_buffer *iob,
1651                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1652                         unsigned long),
1653                 void *reply_param)
1654 {
1655         int rc;
1656         unsigned long flags;
1657         struct qeth_reply *reply = NULL;
1658         unsigned long timeout;
1659
1660         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1661
1662         reply = qeth_alloc_reply(card);
1663         if (!reply) {
1664                 PRINT_WARN("Could not alloc qeth_reply!\n");
1665                 return -ENOMEM;
1666         }
1667         reply->callback = reply_cb;
1668         reply->param = reply_param;
1669         if (card->state == CARD_STATE_DOWN)
1670                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1671         else
1672                 reply->seqno = card->seqno.ipa++;
1673         init_waitqueue_head(&reply->wait_q);
1674         spin_lock_irqsave(&card->lock, flags);
1675         list_add_tail(&reply->list, &card->cmd_waiter_list);
1676         spin_unlock_irqrestore(&card->lock, flags);
1677         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1678
1679         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1680         qeth_prepare_control_data(card, len, iob);
1681
1682         if (IS_IPA(iob->data))
1683                 timeout = jiffies + QETH_IPA_TIMEOUT;
1684         else
1685                 timeout = jiffies + QETH_TIMEOUT;
1686
1687         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1688         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1689         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1690                               (addr_t) iob, 0, 0);
1691         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1692         if (rc) {
1693                 PRINT_WARN("qeth_send_control_data: "
1694                            "ccw_device_start rc = %i\n", rc);
1695                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1696                 spin_lock_irqsave(&card->lock, flags);
1697                 list_del_init(&reply->list);
1698                 qeth_put_reply(reply);
1699                 spin_unlock_irqrestore(&card->lock, flags);
1700                 qeth_release_buffer(iob->channel, iob);
1701                 atomic_set(&card->write.irq_pending, 0);
1702                 wake_up(&card->wait_q);
1703                 return rc;
1704         }
1705         while (!atomic_read(&reply->received)) {
1706                 if (time_after(jiffies, timeout)) {
1707                         spin_lock_irqsave(&reply->card->lock, flags);
1708                         list_del_init(&reply->list);
1709                         spin_unlock_irqrestore(&reply->card->lock, flags);
1710                         reply->rc = -ETIME;
1711                         atomic_inc(&reply->received);
1712                         wake_up(&reply->wait_q);
1713                 }
1714                 cpu_relax();
1715         };
1716         rc = reply->rc;
1717         qeth_put_reply(reply);
1718         return rc;
1719 }
1720 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1721
1722 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1723                 unsigned long data)
1724 {
1725         struct qeth_cmd_buffer *iob;
1726
1727         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1728
1729         iob = (struct qeth_cmd_buffer *) data;
1730         memcpy(&card->token.cm_filter_r,
1731                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1732                QETH_MPC_TOKEN_LENGTH);
1733         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1734         return 0;
1735 }
1736
1737 static int qeth_cm_enable(struct qeth_card *card)
1738 {
1739         int rc;
1740         struct qeth_cmd_buffer *iob;
1741
1742         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1743
1744         iob = qeth_wait_for_buffer(&card->write);
1745         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1746         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1747                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1748         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1749                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1750
1751         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1752                                     qeth_cm_enable_cb, NULL);
1753         return rc;
1754 }
1755
1756 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1757                 unsigned long data)
1758 {
1759
1760         struct qeth_cmd_buffer *iob;
1761
1762         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1763
1764         iob = (struct qeth_cmd_buffer *) data;
1765         memcpy(&card->token.cm_connection_r,
1766                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1767                QETH_MPC_TOKEN_LENGTH);
1768         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1769         return 0;
1770 }
1771
1772 static int qeth_cm_setup(struct qeth_card *card)
1773 {
1774         int rc;
1775         struct qeth_cmd_buffer *iob;
1776
1777         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1778
1779         iob = qeth_wait_for_buffer(&card->write);
1780         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1781         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1782                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1783         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1784                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1785         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1786                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1787         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1788                                     qeth_cm_setup_cb, NULL);
1789         return rc;
1790
1791 }
1792
1793 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1794 {
1795         switch (card->info.type) {
1796         case QETH_CARD_TYPE_UNKNOWN:
1797                 return 1500;
1798         case QETH_CARD_TYPE_IQD:
1799                 return card->info.max_mtu;
1800         case QETH_CARD_TYPE_OSAE:
1801                 switch (card->info.link_type) {
1802                 case QETH_LINK_TYPE_HSTR:
1803                 case QETH_LINK_TYPE_LANE_TR:
1804                         return 2000;
1805                 default:
1806                         return 1492;
1807                 }
1808         default:
1809                 return 1500;
1810         }
1811 }
1812
1813 static inline int qeth_get_max_mtu_for_card(int cardtype)
1814 {
1815         switch (cardtype) {
1816
1817         case QETH_CARD_TYPE_UNKNOWN:
1818         case QETH_CARD_TYPE_OSAE:
1819         case QETH_CARD_TYPE_OSN:
1820                 return 61440;
1821         case QETH_CARD_TYPE_IQD:
1822                 return 57344;
1823         default:
1824                 return 1500;
1825         }
1826 }
1827
1828 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1829 {
1830         switch (cardtype) {
1831         case QETH_CARD_TYPE_IQD:
1832                 return 1;
1833         default:
1834                 return 0;
1835         }
1836 }
1837
1838 static inline int qeth_get_mtu_outof_framesize(int framesize)
1839 {
1840         switch (framesize) {
1841         case 0x4000:
1842                 return 8192;
1843         case 0x6000:
1844                 return 16384;
1845         case 0xa000:
1846                 return 32768;
1847         case 0xffff:
1848                 return 57344;
1849         default:
1850                 return 0;
1851         }
1852 }
1853
1854 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1855 {
1856         switch (card->info.type) {
1857         case QETH_CARD_TYPE_OSAE:
1858                 return ((mtu >= 576) && (mtu <= 61440));
1859         case QETH_CARD_TYPE_IQD:
1860                 return ((mtu >= 576) &&
1861                         (mtu <= card->info.max_mtu + 4096 - 32));
1862         case QETH_CARD_TYPE_OSN:
1863         case QETH_CARD_TYPE_UNKNOWN:
1864         default:
1865                 return 1;
1866         }
1867 }
1868
1869 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1870                 unsigned long data)
1871 {
1872
1873         __u16 mtu, framesize;
1874         __u16 len;
1875         __u8 link_type;
1876         struct qeth_cmd_buffer *iob;
1877
1878         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1879
1880         iob = (struct qeth_cmd_buffer *) data;
1881         memcpy(&card->token.ulp_filter_r,
1882                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1883                QETH_MPC_TOKEN_LENGTH);
1884         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1885                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1886                 mtu = qeth_get_mtu_outof_framesize(framesize);
1887                 if (!mtu) {
1888                         iob->rc = -EINVAL;
1889                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1890                         return 0;
1891                 }
1892                 card->info.max_mtu = mtu;
1893                 card->info.initial_mtu = mtu;
1894                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1895         } else {
1896                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1897                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1898                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1899         }
1900
1901         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1902         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1903                 memcpy(&link_type,
1904                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1905                 card->info.link_type = link_type;
1906         } else
1907                 card->info.link_type = 0;
1908         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1909         return 0;
1910 }
1911
1912 static int qeth_ulp_enable(struct qeth_card *card)
1913 {
1914         int rc;
1915         char prot_type;
1916         struct qeth_cmd_buffer *iob;
1917
1918         /*FIXME: trace view callbacks*/
1919         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1920
1921         iob = qeth_wait_for_buffer(&card->write);
1922         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1923
1924         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1925                 (__u8) card->info.portno;
1926         if (card->options.layer2)
1927                 if (card->info.type == QETH_CARD_TYPE_OSN)
1928                         prot_type = QETH_PROT_OSN2;
1929                 else
1930                         prot_type = QETH_PROT_LAYER2;
1931         else
1932                 prot_type = QETH_PROT_TCPIP;
1933
1934         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1935         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1936                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1937         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1938                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1939         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1940                card->info.portname, 9);
1941         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1942                                     qeth_ulp_enable_cb, NULL);
1943         return rc;
1944
1945 }
1946
1947 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1948                 unsigned long data)
1949 {
1950         struct qeth_cmd_buffer *iob;
1951
1952         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1953
1954         iob = (struct qeth_cmd_buffer *) data;
1955         memcpy(&card->token.ulp_connection_r,
1956                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1957                QETH_MPC_TOKEN_LENGTH);
1958         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1959         return 0;
1960 }
1961
1962 static int qeth_ulp_setup(struct qeth_card *card)
1963 {
1964         int rc;
1965         __u16 temp;
1966         struct qeth_cmd_buffer *iob;
1967         struct ccw_dev_id dev_id;
1968
1969         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
1970
1971         iob = qeth_wait_for_buffer(&card->write);
1972         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
1973
1974         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
1975                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1976         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
1977                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
1978         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
1979                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
1980
1981         ccw_device_get_id(CARD_DDEV(card), &dev_id);
1982         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
1983         temp = (card->info.cula << 8) + card->info.unit_addr2;
1984         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
1985         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
1986                                     qeth_ulp_setup_cb, NULL);
1987         return rc;
1988 }
1989
1990 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
1991 {
1992         int i, j;
1993
1994         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
1995
1996         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
1997                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
1998                 return 0;
1999
2000         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2001                                   GFP_KERNEL);
2002         if (!card->qdio.in_q)
2003                 goto out_nomem;
2004         QETH_DBF_TEXT(SETUP, 2, "inq");
2005         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2006         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2007         /* give inbound qeth_qdio_buffers their qdio_buffers */
2008         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2009                 card->qdio.in_q->bufs[i].buffer =
2010                         &card->qdio.in_q->qdio_bufs[i];
2011         /* inbound buffer pool */
2012         if (qeth_alloc_buffer_pool(card))
2013                 goto out_freeinq;
2014         /* outbound */
2015         card->qdio.out_qs =
2016                 kmalloc(card->qdio.no_out_queues *
2017                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2018         if (!card->qdio.out_qs)
2019                 goto out_freepool;
2020         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2021                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2022                                                GFP_KERNEL);
2023                 if (!card->qdio.out_qs[i])
2024                         goto out_freeoutq;
2025                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2026                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2027                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2028                 card->qdio.out_qs[i]->queue_no = i;
2029                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2030                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2031                         card->qdio.out_qs[i]->bufs[j].buffer =
2032                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2033                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2034                                             skb_list);
2035                         lockdep_set_class(
2036                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2037                                 &qdio_out_skb_queue_key);
2038                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2039                 }
2040         }
2041         return 0;
2042
2043 out_freeoutq:
2044         while (i > 0)
2045                 kfree(card->qdio.out_qs[--i]);
2046         kfree(card->qdio.out_qs);
2047         card->qdio.out_qs = NULL;
2048 out_freepool:
2049         qeth_free_buffer_pool(card);
2050 out_freeinq:
2051         kfree(card->qdio.in_q);
2052         card->qdio.in_q = NULL;
2053 out_nomem:
2054         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2055         return -ENOMEM;
2056 }
2057
2058 static void qeth_create_qib_param_field(struct qeth_card *card,
2059                 char *param_field)
2060 {
2061
2062         param_field[0] = _ascebc['P'];
2063         param_field[1] = _ascebc['C'];
2064         param_field[2] = _ascebc['I'];
2065         param_field[3] = _ascebc['T'];
2066         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2067         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2068         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2069 }
2070
2071 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2072                 char *param_field)
2073 {
2074         param_field[16] = _ascebc['B'];
2075         param_field[17] = _ascebc['L'];
2076         param_field[18] = _ascebc['K'];
2077         param_field[19] = _ascebc['T'];
2078         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2079         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2080         *((unsigned int *) (&param_field[28])) =
2081                 card->info.blkt.inter_packet_jumbo;
2082 }
2083
2084 static int qeth_qdio_activate(struct qeth_card *card)
2085 {
2086         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2087         return qdio_activate(CARD_DDEV(card), 0);
2088 }
2089
2090 static int qeth_dm_act(struct qeth_card *card)
2091 {
2092         int rc;
2093         struct qeth_cmd_buffer *iob;
2094
2095         QETH_DBF_TEXT(SETUP, 2, "dmact");
2096
2097         iob = qeth_wait_for_buffer(&card->write);
2098         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2099
2100         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2101                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2102         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2103                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2104         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2105         return rc;
2106 }
2107
2108 static int qeth_mpc_initialize(struct qeth_card *card)
2109 {
2110         int rc;
2111
2112         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2113
2114         rc = qeth_issue_next_read(card);
2115         if (rc) {
2116                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2117                 return rc;
2118         }
2119         rc = qeth_cm_enable(card);
2120         if (rc) {
2121                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2122                 goto out_qdio;
2123         }
2124         rc = qeth_cm_setup(card);
2125         if (rc) {
2126                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2127                 goto out_qdio;
2128         }
2129         rc = qeth_ulp_enable(card);
2130         if (rc) {
2131                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2132                 goto out_qdio;
2133         }
2134         rc = qeth_ulp_setup(card);
2135         if (rc) {
2136                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2137                 goto out_qdio;
2138         }
2139         rc = qeth_alloc_qdio_buffers(card);
2140         if (rc) {
2141                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2142                 goto out_qdio;
2143         }
2144         rc = qeth_qdio_establish(card);
2145         if (rc) {
2146                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2147                 qeth_free_qdio_buffers(card);
2148                 goto out_qdio;
2149         }
2150         rc = qeth_qdio_activate(card);
2151         if (rc) {
2152                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2153                 goto out_qdio;
2154         }
2155         rc = qeth_dm_act(card);
2156         if (rc) {
2157                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2158                 goto out_qdio;
2159         }
2160
2161         return 0;
2162 out_qdio:
2163         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2164         return rc;
2165 }
2166
2167 static void qeth_print_status_with_portname(struct qeth_card *card)
2168 {
2169         char dbf_text[15];
2170         int i;
2171
2172         sprintf(dbf_text, "%s", card->info.portname + 1);
2173         for (i = 0; i < 8; i++)
2174                 dbf_text[i] =
2175                         (char) _ebcasc[(__u8) dbf_text[i]];
2176         dbf_text[8] = 0;
2177         PRINT_INFO("Device %s/%s/%s is a%s card%s%s%s\n"
2178                "with link type %s (portname: %s)\n",
2179                CARD_RDEV_ID(card),
2180                CARD_WDEV_ID(card),
2181                CARD_DDEV_ID(card),
2182                qeth_get_cardname(card),
2183                (card->info.mcl_level[0]) ? " (level: " : "",
2184                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2185                (card->info.mcl_level[0]) ? ")" : "",
2186                qeth_get_cardname_short(card),
2187                dbf_text);
2188
2189 }
2190
2191 static void qeth_print_status_no_portname(struct qeth_card *card)
2192 {
2193         if (card->info.portname[0])
2194                 PRINT_INFO("Device %s/%s/%s is a%s "
2195                        "card%s%s%s\nwith link type %s "
2196                        "(no portname needed by interface).\n",
2197                        CARD_RDEV_ID(card),
2198                        CARD_WDEV_ID(card),
2199                        CARD_DDEV_ID(card),
2200                        qeth_get_cardname(card),
2201                        (card->info.mcl_level[0]) ? " (level: " : "",
2202                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2203                        (card->info.mcl_level[0]) ? ")" : "",
2204                        qeth_get_cardname_short(card));
2205         else
2206                 PRINT_INFO("Device %s/%s/%s is a%s "
2207                        "card%s%s%s\nwith link type %s.\n",
2208                        CARD_RDEV_ID(card),
2209                        CARD_WDEV_ID(card),
2210                        CARD_DDEV_ID(card),
2211                        qeth_get_cardname(card),
2212                        (card->info.mcl_level[0]) ? " (level: " : "",
2213                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2214                        (card->info.mcl_level[0]) ? ")" : "",
2215                        qeth_get_cardname_short(card));
2216 }
2217
2218 void qeth_print_status_message(struct qeth_card *card)
2219 {
2220         switch (card->info.type) {
2221         case QETH_CARD_TYPE_OSAE:
2222                 /* VM will use a non-zero first character
2223                  * to indicate a HiperSockets like reporting
2224                  * of the level OSA sets the first character to zero
2225                  * */
2226                 if (!card->info.mcl_level[0]) {
2227                         sprintf(card->info.mcl_level, "%02x%02x",
2228                                 card->info.mcl_level[2],
2229                                 card->info.mcl_level[3]);
2230
2231                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2232                         break;
2233                 }
2234                 /* fallthrough */
2235         case QETH_CARD_TYPE_IQD:
2236                 if (card->info.guestlan) {
2237                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2238                                 card->info.mcl_level[0]];
2239                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2240                                 card->info.mcl_level[1]];
2241                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2242                                 card->info.mcl_level[2]];
2243                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2244                                 card->info.mcl_level[3]];
2245                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2246                 }
2247                 break;
2248         default:
2249                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2250         }
2251         if (card->info.portname_required)
2252                 qeth_print_status_with_portname(card);
2253         else
2254                 qeth_print_status_no_portname(card);
2255 }
2256 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2257
2258 void qeth_put_buffer_pool_entry(struct qeth_card *card,
2259                 struct qeth_buffer_pool_entry *entry)
2260 {
2261         QETH_DBF_TEXT(TRACE, 6, "ptbfplen");
2262         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
2263 }
2264 EXPORT_SYMBOL_GPL(qeth_put_buffer_pool_entry);
2265
2266 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2267 {
2268         struct qeth_buffer_pool_entry *entry;
2269
2270         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2271
2272         list_for_each_entry(entry,
2273                             &card->qdio.init_pool.entry_list, init_list) {
2274                 qeth_put_buffer_pool_entry(card, entry);
2275         }
2276 }
2277
2278 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2279                 struct qeth_card *card)
2280 {
2281         struct list_head *plh;
2282         struct qeth_buffer_pool_entry *entry;
2283         int i, free;
2284         struct page *page;
2285
2286         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2287                 return NULL;
2288
2289         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2290                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2291                 free = 1;
2292                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2293                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2294                                 free = 0;
2295                                 break;
2296                         }
2297                 }
2298                 if (free) {
2299                         list_del_init(&entry->list);
2300                         return entry;
2301                 }
2302         }
2303
2304         /* no free buffer in pool so take first one and swap pages */
2305         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2306                         struct qeth_buffer_pool_entry, list);
2307         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2308                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2309                         page = alloc_page(GFP_ATOMIC);
2310                         if (!page) {
2311                                 return NULL;
2312                         } else {
2313                                 free_page((unsigned long)entry->elements[i]);
2314                                 entry->elements[i] = page_address(page);
2315                                 if (card->options.performance_stats)
2316                                         card->perf_stats.sg_alloc_page_rx++;
2317                         }
2318                 }
2319         }
2320         list_del_init(&entry->list);
2321         return entry;
2322 }
2323
2324 static int qeth_init_input_buffer(struct qeth_card *card,
2325                 struct qeth_qdio_buffer *buf)
2326 {
2327         struct qeth_buffer_pool_entry *pool_entry;
2328         int i;
2329
2330         pool_entry = qeth_find_free_buffer_pool_entry(card);
2331         if (!pool_entry)
2332                 return 1;
2333
2334         /*
2335          * since the buffer is accessed only from the input_tasklet
2336          * there shouldn't be a need to synchronize; also, since we use
2337          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2338          * buffers
2339          */
2340         BUG_ON(!pool_entry);
2341
2342         buf->pool_entry = pool_entry;
2343         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2344                 buf->buffer->element[i].length = PAGE_SIZE;
2345                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2346                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2347                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2348                 else
2349                         buf->buffer->element[i].flags = 0;
2350         }
2351         return 0;
2352 }
2353
2354 int qeth_init_qdio_queues(struct qeth_card *card)
2355 {
2356         int i, j;
2357         int rc;
2358
2359         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2360
2361         /* inbound queue */
2362         memset(card->qdio.in_q->qdio_bufs, 0,
2363                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2364         qeth_initialize_working_pool_list(card);
2365         /*give only as many buffers to hardware as we have buffer pool entries*/
2366         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2367                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2368         card->qdio.in_q->next_buf_to_init =
2369                 card->qdio.in_buf_pool.buf_count - 1;
2370         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2371                      card->qdio.in_buf_pool.buf_count - 1, NULL);
2372         if (rc) {
2373                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2374                 return rc;
2375         }
2376         rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
2377         if (rc) {
2378                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2379                 return rc;
2380         }
2381         /* outbound queue */
2382         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2383                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2384                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2385                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2386                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2387                                         &card->qdio.out_qs[i]->bufs[j]);
2388                 }
2389                 card->qdio.out_qs[i]->card = card;
2390                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2391                 card->qdio.out_qs[i]->do_pack = 0;
2392                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2393                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2394                 atomic_set(&card->qdio.out_qs[i]->state,
2395                            QETH_OUT_Q_UNLOCKED);
2396         }
2397         return 0;
2398 }
2399 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2400
2401 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2402 {
2403         switch (link_type) {
2404         case QETH_LINK_TYPE_HSTR:
2405                 return 2;
2406         default:
2407                 return 1;
2408         }
2409 }
2410
2411 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2412                 struct qeth_ipa_cmd *cmd, __u8 command,
2413                 enum qeth_prot_versions prot)
2414 {
2415         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2416         cmd->hdr.command = command;
2417         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2418         cmd->hdr.seqno = card->seqno.ipa;
2419         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2420         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2421         if (card->options.layer2)
2422                 cmd->hdr.prim_version_no = 2;
2423         else
2424                 cmd->hdr.prim_version_no = 1;
2425         cmd->hdr.param_count = 1;
2426         cmd->hdr.prot_version = prot;
2427         cmd->hdr.ipa_supported = 0;
2428         cmd->hdr.ipa_enabled = 0;
2429 }
2430
2431 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2432                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2433 {
2434         struct qeth_cmd_buffer *iob;
2435         struct qeth_ipa_cmd *cmd;
2436
2437         iob = qeth_wait_for_buffer(&card->write);
2438         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2439         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2440
2441         return iob;
2442 }
2443 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2444
2445 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2446                 char prot_type)
2447 {
2448         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2449         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2450         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2451                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2452 }
2453 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2454
2455 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2456                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2457                         unsigned long),
2458                 void *reply_param)
2459 {
2460         int rc;
2461         char prot_type;
2462
2463         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2464
2465         if (card->options.layer2)
2466                 if (card->info.type == QETH_CARD_TYPE_OSN)
2467                         prot_type = QETH_PROT_OSN2;
2468                 else
2469                         prot_type = QETH_PROT_LAYER2;
2470         else
2471                 prot_type = QETH_PROT_TCPIP;
2472         qeth_prepare_ipa_cmd(card, iob, prot_type);
2473         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2474                                                 iob, reply_cb, reply_param);
2475         return rc;
2476 }
2477 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2478
2479 static int qeth_send_startstoplan(struct qeth_card *card,
2480                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2481 {
2482         int rc;
2483         struct qeth_cmd_buffer *iob;
2484
2485         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2486         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2487
2488         return rc;
2489 }
2490
2491 int qeth_send_startlan(struct qeth_card *card)
2492 {
2493         int rc;
2494
2495         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2496
2497         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2498         return rc;
2499 }
2500 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2501
2502 int qeth_send_stoplan(struct qeth_card *card)
2503 {
2504         int rc = 0;
2505
2506         /*
2507          * TODO: according to the IPA format document page 14,
2508          * TCP/IP (we!) never issue a STOPLAN
2509          * is this right ?!?
2510          */
2511         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2512
2513         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2514         return rc;
2515 }
2516 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2517
2518 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2519                 struct qeth_reply *reply, unsigned long data)
2520 {
2521         struct qeth_ipa_cmd *cmd;
2522
2523         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2524
2525         cmd = (struct qeth_ipa_cmd *) data;
2526         if (cmd->hdr.return_code == 0)
2527                 cmd->hdr.return_code =
2528                         cmd->data.setadapterparms.hdr.return_code;
2529         return 0;
2530 }
2531 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2532
2533 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2534                 struct qeth_reply *reply, unsigned long data)
2535 {
2536         struct qeth_ipa_cmd *cmd;
2537
2538         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2539
2540         cmd = (struct qeth_ipa_cmd *) data;
2541         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2542                 card->info.link_type =
2543                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2544         card->options.adp.supported_funcs =
2545                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2546         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2547 }
2548
2549 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2550                 __u32 command, __u32 cmdlen)
2551 {
2552         struct qeth_cmd_buffer *iob;
2553         struct qeth_ipa_cmd *cmd;
2554
2555         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2556                                      QETH_PROT_IPV4);
2557         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2558         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2559         cmd->data.setadapterparms.hdr.command_code = command;
2560         cmd->data.setadapterparms.hdr.used_total = 1;
2561         cmd->data.setadapterparms.hdr.seq_no = 1;
2562
2563         return iob;
2564 }
2565 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2566
2567 int qeth_query_setadapterparms(struct qeth_card *card)
2568 {
2569         int rc;
2570         struct qeth_cmd_buffer *iob;
2571
2572         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2573         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2574                                    sizeof(struct qeth_ipacmd_setadpparms));
2575         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2576         return rc;
2577 }
2578 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2579
2580 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2581                 unsigned int siga_error, const char *dbftext)
2582 {
2583         if (qdio_error || siga_error) {
2584                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2585                 QETH_DBF_TEXT(QERR, 2, dbftext);
2586                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2587                                buf->element[15].flags & 0xff);
2588                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2589                                buf->element[14].flags & 0xff);
2590                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2591                 QETH_DBF_TEXT_(QERR, 2, " serr=%X", siga_error);
2592                 return 1;
2593         }
2594         return 0;
2595 }
2596 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2597
2598 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2599 {
2600         struct qeth_qdio_q *queue = card->qdio.in_q;
2601         int count;
2602         int i;
2603         int rc;
2604         int newcount = 0;
2605
2606         QETH_DBF_TEXT(TRACE, 6, "queinbuf");
2607         count = (index < queue->next_buf_to_init)?
2608                 card->qdio.in_buf_pool.buf_count -
2609                 (queue->next_buf_to_init - index) :
2610                 card->qdio.in_buf_pool.buf_count -
2611                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2612         /* only requeue at a certain threshold to avoid SIGAs */
2613         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2614                 for (i = queue->next_buf_to_init;
2615                      i < queue->next_buf_to_init + count; ++i) {
2616                         if (qeth_init_input_buffer(card,
2617                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2618                                 break;
2619                         } else {
2620                                 newcount++;
2621                         }
2622                 }
2623
2624                 if (newcount < count) {
2625                         /* we are in memory shortage so we switch back to
2626                            traditional skb allocation and drop packages */
2627                         if (!atomic_read(&card->force_alloc_skb) &&
2628                             net_ratelimit())
2629                                 PRINT_WARN("Switch to alloc skb\n");
2630                         atomic_set(&card->force_alloc_skb, 3);
2631                         count = newcount;
2632                 } else {
2633                         if ((atomic_read(&card->force_alloc_skb) == 1) &&
2634                             net_ratelimit())
2635                                 PRINT_WARN("Switch to sg\n");
2636                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2637                 }
2638
2639                 /*
2640                  * according to old code it should be avoided to requeue all
2641                  * 128 buffers in order to benefit from PCI avoidance.
2642                  * this function keeps at least one buffer (the buffer at
2643                  * 'index') un-requeued -> this buffer is the first buffer that
2644                  * will be requeued the next time
2645                  */
2646                 if (card->options.performance_stats) {
2647                         card->perf_stats.inbound_do_qdio_cnt++;
2648                         card->perf_stats.inbound_do_qdio_start_time =
2649                                 qeth_get_micros();
2650                 }
2651                 rc = do_QDIO(CARD_DDEV(card),
2652                              QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
2653                              0, queue->next_buf_to_init, count, NULL);
2654                 if (card->options.performance_stats)
2655                         card->perf_stats.inbound_do_qdio_time +=
2656                                 qeth_get_micros() -
2657                                 card->perf_stats.inbound_do_qdio_start_time;
2658                 if (rc) {
2659                         PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
2660                                    "return %i (device %s).\n",
2661                                    rc, CARD_DDEV_ID(card));
2662                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2663                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2664                 }
2665                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2666                                           QDIO_MAX_BUFFERS_PER_Q;
2667         }
2668 }
2669 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2670
2671 static int qeth_handle_send_error(struct qeth_card *card,
2672                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err,
2673                 unsigned int siga_err)
2674 {
2675         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2676         int cc = siga_err & 3;
2677
2678         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2679         qeth_check_qdio_errors(buffer->buffer, qdio_err, siga_err, "qouterr");
2680         switch (cc) {
2681         case 0:
2682                 if (qdio_err) {
2683                         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2684                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2685                         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2686                                        (u16)qdio_err, (u8)sbalf15);
2687                         return QETH_SEND_ERROR_LINK_FAILURE;
2688                 }
2689                 return QETH_SEND_ERROR_NONE;
2690         case 2:
2691                 if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
2692                         QETH_DBF_TEXT(TRACE, 1, "SIGAcc2B");
2693                         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2694                         return QETH_SEND_ERROR_KICK_IT;
2695                 }
2696                 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2697                         return QETH_SEND_ERROR_RETRY;
2698                 return QETH_SEND_ERROR_LINK_FAILURE;
2699                 /* look at qdio_error and sbalf 15 */
2700         case 1:
2701                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc1");
2702                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2703                 return QETH_SEND_ERROR_LINK_FAILURE;
2704         case 3:
2705         default:
2706                 QETH_DBF_TEXT(TRACE, 1, "SIGAcc3");
2707                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2708                 return QETH_SEND_ERROR_KICK_IT;
2709         }
2710 }
2711
2712 /*
2713  * Switched to packing state if the number of used buffers on a queue
2714  * reaches a certain limit.
2715  */
2716 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2717 {
2718         if (!queue->do_pack) {
2719                 if (atomic_read(&queue->used_buffers)
2720                     >= QETH_HIGH_WATERMARK_PACK){
2721                         /* switch non-PACKING -> PACKING */
2722                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2723                         if (queue->card->options.performance_stats)
2724                                 queue->card->perf_stats.sc_dp_p++;
2725                         queue->do_pack = 1;
2726                 }
2727         }
2728 }
2729
2730 /*
2731  * Switches from packing to non-packing mode. If there is a packing
2732  * buffer on the queue this buffer will be prepared to be flushed.
2733  * In that case 1 is returned to inform the caller. If no buffer
2734  * has to be flushed, zero is returned.
2735  */
2736 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2737 {
2738         struct qeth_qdio_out_buffer *buffer;
2739         int flush_count = 0;
2740
2741         if (queue->do_pack) {
2742                 if (atomic_read(&queue->used_buffers)
2743                     <= QETH_LOW_WATERMARK_PACK) {
2744                         /* switch PACKING -> non-PACKING */
2745                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2746                         if (queue->card->options.performance_stats)
2747                                 queue->card->perf_stats.sc_p_dp++;
2748                         queue->do_pack = 0;
2749                         /* flush packing buffers */
2750                         buffer = &queue->bufs[queue->next_buf_to_fill];
2751                         if ((atomic_read(&buffer->state) ==
2752                                                 QETH_QDIO_BUF_EMPTY) &&
2753                             (buffer->next_element_to_fill > 0)) {
2754                                 atomic_set(&buffer->state,
2755                                                 QETH_QDIO_BUF_PRIMED);
2756                                 flush_count++;
2757                                 queue->next_buf_to_fill =
2758                                         (queue->next_buf_to_fill + 1) %
2759                                         QDIO_MAX_BUFFERS_PER_Q;
2760                         }
2761                 }
2762         }
2763         return flush_count;
2764 }
2765
2766 /*
2767  * Called to flush a packing buffer if no more pci flags are on the queue.
2768  * Checks if there is a packing buffer and prepares it to be flushed.
2769  * In that case returns 1, otherwise zero.
2770  */
2771 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2772 {
2773         struct qeth_qdio_out_buffer *buffer;
2774
2775         buffer = &queue->bufs[queue->next_buf_to_fill];
2776         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2777            (buffer->next_element_to_fill > 0)) {
2778                 /* it's a packing buffer */
2779                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2780                 queue->next_buf_to_fill =
2781                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2782                 return 1;
2783         }
2784         return 0;
2785 }
2786
2787 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
2788                 int index, int count)
2789 {
2790         struct qeth_qdio_out_buffer *buf;
2791         int rc;
2792         int i;
2793         unsigned int qdio_flags;
2794
2795         QETH_DBF_TEXT(TRACE, 6, "flushbuf");
2796
2797         for (i = index; i < index + count; ++i) {
2798                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2799                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2800                                 SBAL_FLAGS_LAST_ENTRY;
2801
2802                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2803                         continue;
2804
2805                 if (!queue->do_pack) {
2806                         if ((atomic_read(&queue->used_buffers) >=
2807                                 (QETH_HIGH_WATERMARK_PACK -
2808                                  QETH_WATERMARK_PACK_FUZZ)) &&
2809                             !atomic_read(&queue->set_pci_flags_count)) {
2810                                 /* it's likely that we'll go to packing
2811                                  * mode soon */
2812                                 atomic_inc(&queue->set_pci_flags_count);
2813                                 buf->buffer->element[0].flags |= 0x40;
2814                         }
2815                 } else {
2816                         if (!atomic_read(&queue->set_pci_flags_count)) {
2817                                 /*
2818                                  * there's no outstanding PCI any more, so we
2819                                  * have to request a PCI to be sure the the PCI
2820                                  * will wake at some time in the future then we
2821                                  * can flush packed buffers that might still be
2822                                  * hanging around, which can happen if no
2823                                  * further send was requested by the stack
2824                                  */
2825                                 atomic_inc(&queue->set_pci_flags_count);
2826                                 buf->buffer->element[0].flags |= 0x40;
2827                         }
2828                 }
2829         }
2830
2831         queue->card->dev->trans_start = jiffies;
2832         if (queue->card->options.performance_stats) {
2833                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2834                 queue->card->perf_stats.outbound_do_qdio_start_time =
2835                         qeth_get_micros();
2836         }
2837         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2838         if (under_int)
2839                 qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;
2840         if (atomic_read(&queue->set_pci_flags_count))
2841                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2842         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2843                      queue->queue_no, index, count, NULL);
2844         if (queue->card->options.performance_stats)
2845                 queue->card->perf_stats.outbound_do_qdio_time +=
2846                         qeth_get_micros() -
2847                         queue->card->perf_stats.outbound_do_qdio_start_time;
2848         if (rc) {
2849                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2850                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2851                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2852                 queue->card->stats.tx_errors += count;
2853                 /* this must not happen under normal circumstances. if it
2854                  * happens something is really wrong -> recover */
2855                 qeth_schedule_recovery(queue->card);
2856                 return;
2857         }
2858         atomic_add(count, &queue->used_buffers);
2859         if (queue->card->options.performance_stats)
2860                 queue->card->perf_stats.bufs_sent += count;
2861 }
2862
2863 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2864 {
2865         int index;
2866         int flush_cnt = 0;
2867         int q_was_packing = 0;
2868
2869         /*
2870          * check if weed have to switch to non-packing mode or if
2871          * we have to get a pci flag out on the queue
2872          */
2873         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2874             !atomic_read(&queue->set_pci_flags_count)) {
2875                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2876                                 QETH_OUT_Q_UNLOCKED) {
2877                         /*
2878                          * If we get in here, there was no action in
2879                          * do_send_packet. So, we check if there is a
2880                          * packing buffer to be flushed here.
2881                          */
2882                         netif_stop_queue(queue->card->dev);
2883                         index = queue->next_buf_to_fill;
2884                         q_was_packing = queue->do_pack;
2885                         /* queue->do_pack may change */
2886                         barrier();
2887                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2888                         if (!flush_cnt &&
2889                             !atomic_read(&queue->set_pci_flags_count))
2890                                 flush_cnt +=
2891                                         qeth_flush_buffers_on_no_pci(queue);
2892                         if (queue->card->options.performance_stats &&
2893                             q_was_packing)
2894                                 queue->card->perf_stats.bufs_sent_pack +=
2895                                         flush_cnt;
2896                         if (flush_cnt)
2897                                 qeth_flush_buffers(queue, 1, index, flush_cnt);
2898                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2899                 }
2900         }
2901 }
2902
2903 void qeth_qdio_output_handler(struct ccw_device *ccwdev, unsigned int status,
2904                 unsigned int qdio_error, unsigned int siga_error,
2905                 unsigned int __queue, int first_element, int count,
2906                 unsigned long card_ptr)
2907 {
2908         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2909         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2910         struct qeth_qdio_out_buffer *buffer;
2911         int i;
2912
2913         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2914         if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
2915                 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
2916                         QETH_DBF_TEXT(TRACE, 2, "achkcond");
2917                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2918                         QETH_DBF_TEXT_(TRACE, 2, "%08x", status);
2919                         netif_stop_queue(card->dev);
2920                         qeth_schedule_recovery(card);
2921                         return;
2922                 }
2923         }
2924         if (card->options.performance_stats) {
2925                 card->perf_stats.outbound_handler_cnt++;
2926                 card->perf_stats.outbound_handler_start_time =
2927                         qeth_get_micros();
2928         }
2929         for (i = first_element; i < (first_element + count); ++i) {
2930                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2931                 /*we only handle the KICK_IT error by doing a recovery */
2932                 if (qeth_handle_send_error(card, buffer,
2933                                            qdio_error, siga_error)
2934                                 == QETH_SEND_ERROR_KICK_IT){
2935                         netif_stop_queue(card->dev);
2936                         qeth_schedule_recovery(card);
2937                         return;
2938                 }
2939                 qeth_clear_output_buffer(queue, buffer);
2940         }
2941         atomic_sub(count, &queue->used_buffers);
2942         /* check if we need to do something on this outbound queue */
2943         if (card->info.type != QETH_CARD_TYPE_IQD)
2944                 qeth_check_outbound_queue(queue);
2945
2946         netif_wake_queue(queue->card->dev);
2947         if (card->options.performance_stats)
2948                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2949                         card->perf_stats.outbound_handler_start_time;
2950 }
2951 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2952
2953 int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2954 {
2955         int cast_type = RTN_UNSPEC;
2956
2957         if (card->info.type == QETH_CARD_TYPE_OSN)
2958                 return cast_type;
2959
2960         if (skb->dst && skb->dst->neighbour) {
2961                 cast_type = skb->dst->neighbour->type;
2962                 if ((cast_type == RTN_BROADCAST) ||
2963                     (cast_type == RTN_MULTICAST) ||
2964                     (cast_type == RTN_ANYCAST))
2965                         return cast_type;
2966                 else
2967                         return RTN_UNSPEC;
2968         }
2969         /* try something else */
2970         if (skb->protocol == ETH_P_IPV6)
2971                 return (skb_network_header(skb)[24] == 0xff) ?
2972                                 RTN_MULTICAST : 0;
2973         else if (skb->protocol == ETH_P_IP)
2974                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2975                                 RTN_MULTICAST : 0;
2976         /* ... */
2977         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2978                 return RTN_BROADCAST;
2979         else {
2980                 u16 hdr_mac;
2981
2982                 hdr_mac = *((u16 *)skb->data);
2983                 /* tr multicast? */
2984                 switch (card->info.link_type) {
2985                 case QETH_LINK_TYPE_HSTR:
2986                 case QETH_LINK_TYPE_LANE_TR:
2987                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2988                             (hdr_mac == QETH_TR_MAC_C))
2989                                 return RTN_MULTICAST;
2990                         break;
2991                 /* eth or so multicast? */
2992                 default:
2993                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2994                             (hdr_mac == QETH_ETH_MAC_V6))
2995                                 return RTN_MULTICAST;
2996                 }
2997         }
2998         return cast_type;
2999 }
3000 EXPORT_SYMBOL_GPL(qeth_get_cast_type);
3001
3002 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3003                         int ipv, int cast_type)
3004 {
3005         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
3006                 return card->qdio.default_out_queue;
3007         switch (card->qdio.no_out_queues) {
3008         case 4:
3009                 if (cast_type && card->info.is_multicast_different)
3010                         return card->info.is_multicast_different &
3011                                 (card->qdio.no_out_queues - 1);
3012                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3013                         const u8 tos = ip_hdr(skb)->tos;
3014
3015                         if (card->qdio.do_prio_queueing ==
3016                                 QETH_PRIO_Q_ING_TOS) {
3017                                 if (tos & IP_TOS_NOTIMPORTANT)
3018                                         return 3;
3019                                 if (tos & IP_TOS_HIGHRELIABILITY)
3020                                         return 2;
3021                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3022                                         return 1;
3023                                 if (tos & IP_TOS_LOWDELAY)
3024                                         return 0;
3025                         }
3026                         if (card->qdio.do_prio_queueing ==
3027                                 QETH_PRIO_Q_ING_PREC)
3028                                 return 3 - (tos >> 6);
3029                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3030                         /* TODO: IPv6!!! */
3031                 }
3032                 return card->qdio.default_out_queue;
3033         case 1: /* fallthrough for single-out-queue 1920-device */
3034         default:
3035                 return card->qdio.default_out_queue;
3036         }
3037 }
3038 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3039
3040 static void __qeth_free_new_skb(struct sk_buff *orig_skb,
3041                 struct sk_buff *new_skb)
3042 {
3043         if (orig_skb != new_skb)
3044                 dev_kfree_skb_any(new_skb);
3045 }
3046
3047 static inline struct sk_buff *qeth_realloc_headroom(struct qeth_card *card,
3048                 struct sk_buff *skb, int size)
3049 {
3050         struct sk_buff *new_skb = skb;
3051
3052         if (skb_headroom(skb) >= size)
3053                 return skb;
3054         new_skb = skb_realloc_headroom(skb, size);
3055         if (!new_skb)
3056                 PRINT_ERR("Could not realloc headroom for qeth_hdr "
3057                           "on interface %s", QETH_CARD_IFNAME(card));
3058         return new_skb;
3059 }
3060
3061 struct sk_buff *qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb,
3062                  struct qeth_hdr **hdr)
3063 {
3064         struct sk_buff *new_skb;
3065
3066         QETH_DBF_TEXT(TRACE, 6, "prepskb");
3067
3068         new_skb = qeth_realloc_headroom(card, skb,
3069                         sizeof(struct qeth_hdr));
3070         if (!new_skb)
3071                 return NULL;
3072
3073         *hdr = ((struct qeth_hdr *)qeth_push_skb(card, new_skb,
3074                         sizeof(struct qeth_hdr)));
3075         if (*hdr == NULL) {
3076                 __qeth_free_new_skb(skb, new_skb);
3077                 return NULL;
3078         }
3079         return new_skb;
3080 }
3081 EXPORT_SYMBOL_GPL(qeth_prepare_skb);
3082
3083 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3084                      struct sk_buff *skb, int elems)
3085 {
3086         int elements_needed = 0;
3087
3088         if (skb_shinfo(skb)->nr_frags > 0)
3089                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3090         if (elements_needed == 0)
3091                 elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
3092                         + skb->len) >> PAGE_SHIFT);
3093         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3094                 PRINT_ERR("Invalid size of IP packet "
3095                         "(Number=%d / Length=%d). Discarded.\n",
3096                         (elements_needed+elems), skb->len);
3097                 return 0;
3098         }
3099         return elements_needed;
3100 }
3101 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3102
3103 static void __qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
3104                 int is_tso, int *next_element_to_fill)
3105 {
3106         int length = skb->len;
3107         int length_here;
3108         int element;
3109         char *data;
3110         int first_lap ;
3111
3112         element = *next_element_to_fill;
3113         data = skb->data;
3114         first_lap = (is_tso == 0 ? 1 : 0);
3115
3116         while (length > 0) {
3117                 /* length_here is the remaining amount of data in this page */
3118                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3119                 if (length < length_here)
3120                         length_here = length;
3121
3122                 buffer->element[element].addr = data;
3123                 buffer->element[element].length = length_here;
3124                 length -= length_here;
3125                 if (!length) {
3126                         if (first_lap)
3127                                 buffer->element[element].flags = 0;
3128                         else
3129                                 buffer->element[element].flags =
3130                                     SBAL_FLAGS_LAST_FRAG;
3131                 } else {
3132                         if (first_lap)
3133                                 buffer->element[element].flags =
3134                                     SBAL_FLAGS_FIRST_FRAG;
3135                         else
3136                                 buffer->element[element].flags =
3137                                     SBAL_FLAGS_MIDDLE_FRAG;
3138                 }
3139                 data += length_here;
3140                 element++;
3141                 first_lap = 0;
3142         }
3143         *next_element_to_fill = element;
3144 }
3145
3146 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3147                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb)
3148 {
3149         struct qdio_buffer *buffer;
3150         struct qeth_hdr_tso *hdr;
3151         int flush_cnt = 0, hdr_len, large_send = 0;
3152
3153         QETH_DBF_TEXT(TRACE, 6, "qdfillbf");
3154
3155         buffer = buf->buffer;
3156         atomic_inc(&skb->users);
3157         skb_queue_tail(&buf->skb_list, skb);
3158
3159         hdr  = (struct qeth_hdr_tso *) skb->data;
3160         /*check first on TSO ....*/
3161         if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3162                 int element = buf->next_element_to_fill;
3163
3164                 hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
3165                 /*fill first buffer entry only with header information */
3166                 buffer->element[element].addr = skb->data;
3167                 buffer->element[element].length = hdr_len;
3168                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3169                 buf->next_element_to_fill++;
3170                 skb->data += hdr_len;
3171                 skb->len  -= hdr_len;
3172                 large_send = 1;
3173         }
3174         if (skb_shinfo(skb)->nr_frags == 0)
3175                 __qeth_fill_buffer(skb, buffer, large_send,
3176                                    (int *)&buf->next_element_to_fill);
3177         else
3178                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3179                                         (int *)&buf->next_element_to_fill);
3180
3181         if (!queue->do_pack) {
3182                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3183                 /* set state to PRIMED -> will be flushed */
3184                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3185                 flush_cnt = 1;
3186         } else {
3187                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3188                 if (queue->card->options.performance_stats)
3189                         queue->card->perf_stats.skbs_sent_pack++;
3190                 if (buf->next_element_to_fill >=
3191                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3192                         /*
3193                          * packed buffer if full -> set state PRIMED
3194                          * -> will be flushed
3195                          */
3196                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3197                         flush_cnt = 1;
3198                 }
3199         }
3200         return flush_cnt;
3201 }
3202
3203 int qeth_do_send_packet_fast(struct qeth_card *card,
3204                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3205                 struct qeth_hdr *hdr, int elements_needed,
3206                 struct qeth_eddp_context *ctx)
3207 {
3208         struct qeth_qdio_out_buffer *buffer;
3209         int buffers_needed = 0;
3210         int flush_cnt = 0;
3211         int index;
3212
3213         QETH_DBF_TEXT(TRACE, 6, "dosndpfa");
3214
3215         /* spin until we get the queue ... */
3216         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3217                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3218         /* ... now we've got the queue */
3219         index = queue->next_buf_to_fill;
3220         buffer = &queue->bufs[queue->next_buf_to_fill];
3221         /*
3222          * check if buffer is empty to make sure that we do not 'overtake'
3223          * ourselves and try to fill a buffer that is already primed
3224          */
3225         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3226                 goto out;
3227         if (ctx == NULL)
3228                 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3229                                           QDIO_MAX_BUFFERS_PER_Q;
3230         else {
3231                 buffers_needed = qeth_eddp_check_buffers_for_context(queue,
3232                                                                         ctx);
3233                 if (buffers_needed < 0)
3234                         goto out;
3235                 queue->next_buf_to_fill =
3236                         (queue->next_buf_to_fill + buffers_needed) %
3237                         QDIO_MAX_BUFFERS_PER_Q;
3238         }
3239         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3240         if (ctx == NULL) {
3241                 qeth_fill_buffer(queue, buffer, skb);
3242                 qeth_flush_buffers(queue, 0, index, 1);
3243         } else {
3244                 flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
3245                 WARN_ON(buffers_needed != flush_cnt);
3246                 qeth_flush_buffers(queue, 0, index, flush_cnt);
3247         }
3248         return 0;
3249 out:
3250         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3251         return -EBUSY;
3252 }
3253 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3254
3255 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3256                 struct sk_buff *skb, struct qeth_hdr *hdr,
3257                 int elements_needed, struct qeth_eddp_context *ctx)
3258 {
3259         struct qeth_qdio_out_buffer *buffer;
3260         int start_index;
3261         int flush_count = 0;
3262         int do_pack = 0;
3263         int tmp;
3264         int rc = 0;
3265
3266         QETH_DBF_TEXT(TRACE, 6, "dosndpkt");
3267
3268         /* spin until we get the queue ... */
3269         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3270                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3271         start_index = queue->next_buf_to_fill;
3272         buffer = &queue->bufs[queue->next_buf_to_fill];
3273         /*
3274          * check if buffer is empty to make sure that we do not 'overtake'
3275          * ourselves and try to fill a buffer that is already primed
3276          */
3277         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3278                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3279                 return -EBUSY;
3280         }
3281         /* check if we need to switch packing state of this queue */
3282         qeth_switch_to_packing_if_needed(queue);
3283         if (queue->do_pack) {
3284                 do_pack = 1;
3285                 if (ctx == NULL) {
3286                         /* does packet fit in current buffer? */
3287                         if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3288                             buffer->next_element_to_fill) < elements_needed) {
3289                                 /* ... no -> set state PRIMED */
3290                                 atomic_set(&buffer->state,
3291                                         QETH_QDIO_BUF_PRIMED);
3292                                 flush_count++;
3293                                 queue->next_buf_to_fill =
3294                                         (queue->next_buf_to_fill + 1) %
3295                                         QDIO_MAX_BUFFERS_PER_Q;
3296                                 buffer = &queue->bufs[queue->next_buf_to_fill];
3297                                 /* we did a step forward, so check buffer state
3298                                  * again */
3299                                 if (atomic_read(&buffer->state) !=
3300                                                 QETH_QDIO_BUF_EMPTY){
3301                                         qeth_flush_buffers(queue, 0,
3302                                                 start_index, flush_count);
3303                                         atomic_set(&queue->state,
3304                                                 QETH_OUT_Q_UNLOCKED);
3305                                         return -EBUSY;
3306                                 }
3307                         }
3308                 } else {
3309                         /* check if we have enough elements (including following
3310                          * free buffers) to handle eddp context */
3311                         if (qeth_eddp_check_buffers_for_context(queue, ctx)
3312                                 < 0) {
3313                                 if (net_ratelimit())
3314                                         PRINT_WARN("eddp tx_dropped 1\n");
3315                                 rc = -EBUSY;
3316                                 goto out;
3317                         }
3318                 }
3319         }
3320         if (ctx == NULL)
3321                 tmp = qeth_fill_buffer(queue, buffer, skb);
3322         else {
3323                 tmp = qeth_eddp_fill_buffer(queue, ctx,
3324                                                 queue->next_buf_to_fill);
3325                 if (tmp < 0) {
3326                         PRINT_ERR("eddp tx_dropped 2\n");
3327                         rc = -EBUSY;
3328                         goto out;
3329                 }
3330         }
3331         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3332                                   QDIO_MAX_BUFFERS_PER_Q;
3333         flush_count += tmp;
3334 out:
3335         if (flush_count)
3336                 qeth_flush_buffers(queue, 0, start_index, flush_count);
3337         else if (!atomic_read(&queue->set_pci_flags_count))
3338                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3339         /*
3340          * queue->state will go from LOCKED -> UNLOCKED or from
3341          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3342          * (switch packing state or flush buffer to get another pci flag out).
3343          * In that case we will enter this loop
3344          */
3345         while (atomic_dec_return(&queue->state)) {
3346                 flush_count = 0;
3347                 start_index = queue->next_buf_to_fill;
3348                 /* check if we can go back to non-packing state */
3349                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3350                 /*
3351                  * check if we need to flush a packing buffer to get a pci
3352                  * flag out on the queue
3353                  */
3354                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3355                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3356                 if (flush_count)
3357                         qeth_flush_buffers(queue, 0, start_index, flush_count);
3358         }
3359         /* at this point the queue is UNLOCKED again */
3360         if (queue->card->options.performance_stats && do_pack)
3361                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3362
3363         return rc;
3364 }
3365 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3366
3367 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3368                 struct qeth_reply *reply, unsigned long data)
3369 {
3370         struct qeth_ipa_cmd *cmd;
3371         struct qeth_ipacmd_setadpparms *setparms;
3372
3373         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3374
3375         cmd = (struct qeth_ipa_cmd *) data;
3376         setparms = &(cmd->data.setadapterparms);
3377
3378         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3379         if (cmd->hdr.return_code) {
3380                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3381                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3382         }
3383         card->info.promisc_mode = setparms->data.mode;
3384         return 0;
3385 }
3386
3387 void qeth_setadp_promisc_mode(struct qeth_card *card)
3388 {
3389         enum qeth_ipa_promisc_modes mode;
3390         struct net_device *dev = card->dev;
3391         struct qeth_cmd_buffer *iob;
3392         struct qeth_ipa_cmd *cmd;
3393
3394         QETH_DBF_TEXT(TRACE, 4, "setprom");
3395
3396         if (((dev->flags & IFF_PROMISC) &&
3397              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3398             (!(dev->flags & IFF_PROMISC) &&
3399              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3400                 return;
3401         mode = SET_PROMISC_MODE_OFF;
3402         if (dev->flags & IFF_PROMISC)
3403                 mode = SET_PROMISC_MODE_ON;
3404         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3405
3406         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3407                         sizeof(struct qeth_ipacmd_setadpparms));
3408         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3409         cmd->data.setadapterparms.data.mode = mode;
3410         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3411 }
3412 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3413
3414 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3415 {
3416         struct qeth_card *card;
3417         char dbf_text[15];
3418
3419         card = netdev_priv(dev);
3420
3421         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3422         sprintf(dbf_text, "%8x", new_mtu);
3423         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3424
3425         if (new_mtu < 64)
3426                 return -EINVAL;
3427         if (new_mtu > 65535)
3428                 return -EINVAL;
3429         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3430             (!qeth_mtu_is_valid(card, new_mtu)))
3431                 return -EINVAL;
3432         dev->mtu = new_mtu;
3433         return 0;
3434 }
3435 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3436
3437 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3438 {
3439         struct qeth_card *card;
3440
3441         card = netdev_priv(dev);
3442
3443         QETH_DBF_TEXT(TRACE, 5, "getstat");
3444
3445         return &card->stats;
3446 }
3447 EXPORT_SYMBOL_GPL(qeth_get_stats);
3448
3449 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3450                 struct qeth_reply *reply, unsigned long data)
3451 {
3452         struct qeth_ipa_cmd *cmd;
3453
3454         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3455
3456         cmd = (struct qeth_ipa_cmd *) data;
3457         if (!card->options.layer2 ||
3458             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3459                 memcpy(card->dev->dev_addr,
3460                        &cmd->data.setadapterparms.data.change_addr.addr,
3461                        OSA_ADDR_LEN);
3462                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3463         }
3464         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3465         return 0;
3466 }
3467
3468 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3469 {
3470         int rc;
3471         struct qeth_cmd_buffer *iob;
3472         struct qeth_ipa_cmd *cmd;
3473
3474         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3475
3476         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3477                                    sizeof(struct qeth_ipacmd_setadpparms));
3478         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3479         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3480         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3481         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3482                card->dev->dev_addr, OSA_ADDR_LEN);
3483         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3484                                NULL);
3485         return rc;
3486 }
3487 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3488
3489 void qeth_tx_timeout(struct net_device *dev)
3490 {
3491         struct qeth_card *card;
3492
3493         card = netdev_priv(dev);
3494         card->stats.tx_errors++;
3495         qeth_schedule_recovery(card);
3496 }
3497 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3498
3499 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3500 {
3501         struct qeth_card *card = netdev_priv(dev);
3502         int rc = 0;
3503
3504         switch (regnum) {
3505         case MII_BMCR: /* Basic mode control register */
3506                 rc = BMCR_FULLDPLX;
3507                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3508                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3509                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3510                         rc |= BMCR_SPEED100;
3511                 break;
3512         case MII_BMSR: /* Basic mode status register */
3513                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3514                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3515                      BMSR_100BASE4;
3516                 break;
3517         case MII_PHYSID1: /* PHYS ID 1 */
3518                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3519                      dev->dev_addr[2];
3520                 rc = (rc >> 5) & 0xFFFF;
3521                 break;
3522         case MII_PHYSID2: /* PHYS ID 2 */
3523                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3524                 break;
3525         case MII_ADVERTISE: /* Advertisement control reg */
3526                 rc = ADVERTISE_ALL;
3527                 break;
3528         case MII_LPA: /* Link partner ability reg */
3529                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3530                      LPA_100BASE4 | LPA_LPACK;
3531                 break;
3532         case MII_EXPANSION: /* Expansion register */
3533                 break;
3534         case MII_DCOUNTER: /* disconnect counter */
3535                 break;
3536         case MII_FCSCOUNTER: /* false carrier counter */
3537                 break;
3538         case MII_NWAYTEST: /* N-way auto-neg test register */
3539                 break;
3540         case MII_RERRCOUNTER: /* rx error counter */
3541                 rc = card->stats.rx_errors;
3542                 break;
3543         case MII_SREVISION: /* silicon revision */
3544                 break;
3545         case MII_RESV1: /* reserved 1 */
3546                 break;
3547         case MII_LBRERROR: /* loopback, rx, bypass error */
3548                 break;
3549         case MII_PHYADDR: /* physical address */
3550                 break;
3551         case MII_RESV2: /* reserved 2 */
3552                 break;
3553         case MII_TPISTATUS: /* TPI status for 10mbps */
3554                 break;
3555         case MII_NCONFIG: /* network interface config */
3556                 break;
3557         default:
3558                 break;
3559         }
3560         return rc;
3561 }
3562 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3563
3564 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3565                 struct qeth_cmd_buffer *iob, int len,
3566                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3567                         unsigned long),
3568                 void *reply_param)
3569 {
3570         u16 s1, s2;
3571
3572         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3573
3574         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3575         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3576                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3577         /* adjust PDU length fields in IPA_PDU_HEADER */
3578         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3579         s2 = (u32) len;
3580         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3581         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3582         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3583         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3584         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3585                                       reply_cb, reply_param);
3586 }
3587
3588 static int qeth_snmp_command_cb(struct qeth_card *card,
3589                 struct qeth_reply *reply, unsigned long sdata)
3590 {
3591         struct qeth_ipa_cmd *cmd;
3592         struct qeth_arp_query_info *qinfo;
3593         struct qeth_snmp_cmd *snmp;
3594         unsigned char *data;
3595         __u16 data_len;
3596
3597         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3598
3599         cmd = (struct qeth_ipa_cmd *) sdata;
3600         data = (unsigned char *)((char *)cmd - reply->offset);
3601         qinfo = (struct qeth_arp_query_info *) reply->param;
3602         snmp = &cmd->data.setadapterparms.data.snmp;
3603
3604         if (cmd->hdr.return_code) {
3605                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3606                 return 0;
3607         }
3608         if (cmd->data.setadapterparms.hdr.return_code) {
3609                 cmd->hdr.return_code =
3610                         cmd->data.setadapterparms.hdr.return_code;
3611                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3612                 return 0;
3613         }
3614         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3615         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3616                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3617         else
3618                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3619
3620         /* check if there is enough room in userspace */
3621         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3622                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3623                 cmd->hdr.return_code = -ENOMEM;
3624                 return 0;
3625         }
3626         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3627                        cmd->data.setadapterparms.hdr.used_total);
3628         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3629                 cmd->data.setadapterparms.hdr.seq_no);
3630         /*copy entries to user buffer*/
3631         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3632                 memcpy(qinfo->udata + qinfo->udata_offset,
3633                        (char *)snmp,
3634                        data_len + offsetof(struct qeth_snmp_cmd, data));
3635                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3636         } else {
3637                 memcpy(qinfo->udata + qinfo->udata_offset,
3638                        (char *)&snmp->request, data_len);
3639         }
3640         qinfo->udata_offset += data_len;
3641         /* check if all replies received ... */
3642                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3643                                cmd->data.setadapterparms.hdr.used_total);
3644                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3645                                cmd->data.setadapterparms.hdr.seq_no);
3646         if (cmd->data.setadapterparms.hdr.seq_no <
3647             cmd->data.setadapterparms.hdr.used_total)
3648                 return 1;
3649         return 0;
3650 }
3651
3652 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3653 {
3654         struct qeth_cmd_buffer *iob;
3655         struct qeth_ipa_cmd *cmd;
3656         struct qeth_snmp_ureq *ureq;
3657         int req_len;
3658         struct qeth_arp_query_info qinfo = {0, };
3659         int rc = 0;
3660
3661         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3662
3663         if (card->info.guestlan)
3664                 return -EOPNOTSUPP;
3665
3666         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3667             (!card->options.layer2)) {
3668                 PRINT_WARN("SNMP Query MIBS not supported "
3669                            "on %s!\n", QETH_CARD_IFNAME(card));
3670                 return -EOPNOTSUPP;
3671         }
3672         /* skip 4 bytes (data_len struct member) to get req_len */
3673         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3674                 return -EFAULT;
3675         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3676         if (!ureq) {
3677                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3678                 return -ENOMEM;
3679         }
3680         if (copy_from_user(ureq, udata,
3681                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3682                 kfree(ureq);
3683                 return -EFAULT;
3684         }
3685         qinfo.udata_len = ureq->hdr.data_len;
3686         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3687         if (!qinfo.udata) {
3688                 kfree(ureq);
3689                 return -ENOMEM;
3690         }
3691         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3692
3693         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3694                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3695         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3696         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3697         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3698                                     qeth_snmp_command_cb, (void *)&qinfo);
3699         if (rc)
3700                 PRINT_WARN("SNMP command failed on %s: (0x%x)\n",
3701                            QETH_CARD_IFNAME(card), rc);
3702         else {
3703                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3704                         rc = -EFAULT;
3705         }
3706
3707         kfree(ureq);
3708         kfree(qinfo.udata);
3709         return rc;
3710 }
3711 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3712
3713 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3714 {
3715         switch (card->info.type) {
3716         case QETH_CARD_TYPE_IQD:
3717                 return 2;
3718         default:
3719                 return 0;
3720         }
3721 }
3722
3723 static int qeth_qdio_establish(struct qeth_card *card)
3724 {
3725         struct qdio_initialize init_data;
3726         char *qib_param_field;
3727         struct qdio_buffer **in_sbal_ptrs;
3728         struct qdio_buffer **out_sbal_ptrs;
3729         int i, j, k;
3730         int rc = 0;
3731
3732         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3733
3734         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3735                               GFP_KERNEL);
3736         if (!qib_param_field)
3737                 return -ENOMEM;
3738
3739         qeth_create_qib_param_field(card, qib_param_field);
3740         qeth_create_qib_param_field_blkt(card, qib_param_field);
3741
3742         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3743                                GFP_KERNEL);
3744         if (!in_sbal_ptrs) {
3745                 kfree(qib_param_field);
3746                 return -ENOMEM;
3747         }
3748         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3749                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3750                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3751
3752         out_sbal_ptrs =
3753                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3754                         sizeof(void *), GFP_KERNEL);
3755         if (!out_sbal_ptrs) {
3756                 kfree(in_sbal_ptrs);
3757                 kfree(qib_param_field);
3758                 return -ENOMEM;
3759         }
3760         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3761                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3762                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3763                                 card->qdio.out_qs[i]->bufs[j].buffer);
3764                 }
3765
3766         memset(&init_data, 0, sizeof(struct qdio_initialize));
3767         init_data.cdev                   = CARD_DDEV(card);
3768         init_data.q_format               = qeth_get_qdio_q_format(card);
3769         init_data.qib_param_field_format = 0;
3770         init_data.qib_param_field        = qib_param_field;
3771         init_data.min_input_threshold    = QETH_MIN_INPUT_THRESHOLD;
3772         init_data.max_input_threshold    = QETH_MAX_INPUT_THRESHOLD;
3773         init_data.min_output_threshold   = QETH_MIN_OUTPUT_THRESHOLD;
3774         init_data.max_output_threshold   = QETH_MAX_OUTPUT_THRESHOLD;
3775         init_data.no_input_qs            = 1;
3776         init_data.no_output_qs           = card->qdio.no_out_queues;
3777         init_data.input_handler          = card->discipline.input_handler;
3778         init_data.output_handler         = card->discipline.output_handler;
3779         init_data.int_parm               = (unsigned long) card;
3780         init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
3781                                            QDIO_OUTBOUND_0COPY_SBALS |
3782                                            QDIO_USE_OUTBOUND_PCIS;
3783         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3784         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3785
3786         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3787                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3788                 rc = qdio_initialize(&init_data);
3789                 if (rc)
3790                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3791         }
3792         kfree(out_sbal_ptrs);
3793         kfree(in_sbal_ptrs);
3794         kfree(qib_param_field);
3795         return rc;
3796 }
3797
3798 static void qeth_core_free_card(struct qeth_card *card)
3799 {
3800
3801         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3802         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3803         qeth_clean_channel(&card->read);
3804         qeth_clean_channel(&card->write);
3805         if (card->dev)
3806                 free_netdev(card->dev);
3807         kfree(card->ip_tbd_list);
3808         qeth_free_qdio_buffers(card);
3809         kfree(card);
3810 }
3811
3812 static struct ccw_device_id qeth_ids[] = {
3813         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3814         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3815         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3816         {},
3817 };
3818 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3819
3820 static struct ccw_driver qeth_ccw_driver = {
3821         .name = "qeth",
3822         .ids = qeth_ids,
3823         .probe = ccwgroup_probe_ccwdev,
3824         .remove = ccwgroup_remove_ccwdev,
3825 };
3826
3827 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3828                                 unsigned long driver_id)
3829 {
3830         const char *start, *end;
3831         char bus_ids[3][BUS_ID_SIZE], *argv[3];
3832         int i;
3833
3834         start = buf;
3835         for (i = 0; i < 3; i++) {
3836                 static const char delim[] = { ',', ',', '\n' };
3837                 int len;
3838
3839                 end = strchr(start, delim[i]);
3840                 if (!end)
3841                         return -EINVAL;
3842                 len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start);
3843                 strncpy(bus_ids[i], start, len);
3844                 bus_ids[i][len] = '\0';
3845                 start = end + 1;
3846                 argv[i] = bus_ids[i];
3847         }
3848
3849         return (ccwgroup_create(root_dev, driver_id,
3850                                 &qeth_ccw_driver, 3, argv));
3851 }
3852
3853 int qeth_core_hardsetup_card(struct qeth_card *card)
3854 {
3855         int retries = 3;
3856         int mpno;
3857         int rc;
3858
3859         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3860         atomic_set(&card->force_alloc_skb, 0);
3861 retry:
3862         if (retries < 3) {
3863                 PRINT_WARN("Retrying to do IDX activates.\n");
3864                 ccw_device_set_offline(CARD_DDEV(card));
3865                 ccw_device_set_offline(CARD_WDEV(card));
3866                 ccw_device_set_offline(CARD_RDEV(card));
3867                 ccw_device_set_online(CARD_RDEV(card));
3868                 ccw_device_set_online(CARD_WDEV(card));
3869                 ccw_device_set_online(CARD_DDEV(card));
3870         }
3871         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3872         if (rc == -ERESTARTSYS) {
3873                 QETH_DBF_TEXT(SETUP, 2, "break1");
3874                 return rc;
3875         } else if (rc) {
3876                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3877                 if (--retries < 0)
3878                         goto out;
3879                 else
3880                         goto retry;
3881         }
3882
3883         rc = qeth_get_unitaddr(card);
3884         if (rc) {
3885                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3886                 return rc;
3887         }
3888
3889         mpno = QETH_MAX_PORTNO;
3890         if (card->info.portno > mpno) {
3891                 PRINT_ERR("Device %s does not offer port number %d \n.",
3892                         CARD_BUS_ID(card), card->info.portno);
3893                 rc = -ENODEV;
3894                 goto out;
3895         }
3896         qeth_init_tokens(card);
3897         qeth_init_func_level(card);
3898         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3899         if (rc == -ERESTARTSYS) {
3900                 QETH_DBF_TEXT(SETUP, 2, "break2");
3901                 return rc;
3902         } else if (rc) {
3903                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3904                 if (--retries < 0)
3905                         goto out;
3906                 else
3907                         goto retry;
3908         }
3909         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3910         if (rc == -ERESTARTSYS) {
3911                 QETH_DBF_TEXT(SETUP, 2, "break3");
3912                 return rc;
3913         } else if (rc) {
3914                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3915                 if (--retries < 0)
3916                         goto out;
3917                 else
3918                         goto retry;
3919         }
3920         rc = qeth_mpc_initialize(card);
3921         if (rc) {
3922                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3923                 goto out;
3924         }
3925         return 0;
3926 out:
3927         PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
3928         return rc;
3929 }
3930 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3931
3932 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3933                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3934 {
3935         struct page *page = virt_to_page(element->addr);
3936         if (*pskb == NULL) {
3937                 /* the upper protocol layers assume that there is data in the
3938                  * skb itself. Copy a small amount (64 bytes) to make them
3939                  * happy. */
3940                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3941                 if (!(*pskb))
3942                         return -ENOMEM;
3943                 skb_reserve(*pskb, ETH_HLEN);
3944                 if (data_len <= 64) {
3945                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3946                                 data_len);
3947                 } else {
3948                         get_page(page);
3949                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3950                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3951                                 data_len - 64);
3952                         (*pskb)->data_len += data_len - 64;
3953                         (*pskb)->len      += data_len - 64;
3954                         (*pskb)->truesize += data_len - 64;
3955                         (*pfrag)++;
3956                 }
3957         } else {
3958                 get_page(page);
3959                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3960                 (*pskb)->data_len += data_len;
3961                 (*pskb)->len      += data_len;
3962                 (*pskb)->truesize += data_len;
3963                 (*pfrag)++;
3964         }
3965         return 0;
3966 }
3967
3968 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3969                 struct qdio_buffer *buffer,
3970                 struct qdio_buffer_element **__element, int *__offset,
3971                 struct qeth_hdr **hdr)
3972 {
3973         struct qdio_buffer_element *element = *__element;
3974         int offset = *__offset;
3975         struct sk_buff *skb = NULL;
3976         int skb_len;
3977         void *data_ptr;
3978         int data_len;
3979         int headroom = 0;
3980         int use_rx_sg = 0;
3981         int frag = 0;
3982
3983         QETH_DBF_TEXT(TRACE, 6, "nextskb");
3984         /* qeth_hdr must not cross element boundaries */
3985         if (element->length < offset + sizeof(struct qeth_hdr)) {
3986                 if (qeth_is_last_sbale(element))
3987                         return NULL;
3988                 element++;
3989                 offset = 0;
3990                 if (element->length < sizeof(struct qeth_hdr))
3991                         return NULL;
3992         }
3993         *hdr = element->addr + offset;
3994
3995         offset += sizeof(struct qeth_hdr);
3996         if (card->options.layer2) {
3997                 if (card->info.type == QETH_CARD_TYPE_OSN) {
3998                         skb_len = (*hdr)->hdr.osn.pdu_length;
3999                         headroom = sizeof(struct qeth_hdr);
4000                 } else {
4001                         skb_len = (*hdr)->hdr.l2.pkt_length;
4002                 }
4003         } else {
4004                 skb_len = (*hdr)->hdr.l3.length;
4005                 headroom = max((int)ETH_HLEN, (int)TR_HLEN);
4006         }
4007
4008         if (!skb_len)
4009                 return NULL;
4010
4011         if ((skb_len >= card->options.rx_sg_cb) &&
4012             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4013             (!atomic_read(&card->force_alloc_skb))) {
4014                 use_rx_sg = 1;
4015         } else {
4016                 skb = dev_alloc_skb(skb_len + headroom);
4017                 if (!skb)
4018                         goto no_mem;
4019                 if (headroom)
4020                         skb_reserve(skb, headroom);
4021         }
4022
4023         data_ptr = element->addr + offset;
4024         while (skb_len) {
4025                 data_len = min(skb_len, (int)(element->length - offset));
4026                 if (data_len) {
4027                         if (use_rx_sg) {
4028                                 if (qeth_create_skb_frag(element, &skb, offset,
4029                                     &frag, data_len))
4030                                         goto no_mem;
4031                         } else {
4032                                 memcpy(skb_put(skb, data_len), data_ptr,
4033                                         data_len);
4034                         }
4035                 }
4036                 skb_len -= data_len;
4037                 if (skb_len) {
4038                         if (qeth_is_last_sbale(element)) {
4039                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4040                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4041                                         CARD_BUS_ID(card));
4042                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4043                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4044                                         CARD_BUS_ID(card));
4045                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4046                                 dev_kfree_skb_any(skb);
4047                                 card->stats.rx_errors++;
4048                                 return NULL;
4049                         }
4050                         element++;
4051                         offset = 0;
4052                         data_ptr = element->addr;
4053                 } else {
4054                         offset += data_len;
4055                 }
4056         }
4057         *__element = element;
4058         *__offset = offset;
4059         if (use_rx_sg && card->options.performance_stats) {
4060                 card->perf_stats.sg_skbs_rx++;
4061                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4062         }
4063         return skb;
4064 no_mem:
4065         if (net_ratelimit()) {
4066                 PRINT_WARN("No memory for packet received on %s.\n",
4067                            QETH_CARD_IFNAME(card));
4068                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4069                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4070         }
4071         card->stats.rx_dropped++;
4072         return NULL;
4073 }
4074 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4075
4076 static void qeth_unregister_dbf_views(void)
4077 {
4078         int x;
4079         for (x = 0; x < QETH_DBF_INFOS; x++) {
4080                 debug_unregister(qeth_dbf[x].id);
4081                 qeth_dbf[x].id = NULL;
4082         }
4083 }
4084
4085 static int qeth_register_dbf_views(void)
4086 {
4087         int ret;
4088         int x;
4089
4090         for (x = 0; x < QETH_DBF_INFOS; x++) {
4091                 /* register the areas */
4092                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4093                                                 qeth_dbf[x].pages,
4094                                                 qeth_dbf[x].areas,
4095                                                 qeth_dbf[x].len);
4096                 if (qeth_dbf[x].id == NULL) {
4097                         qeth_unregister_dbf_views();
4098                         return -ENOMEM;
4099                 }
4100
4101                 /* register a view */
4102                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4103                 if (ret) {
4104                         qeth_unregister_dbf_views();
4105                         return ret;
4106                 }
4107
4108                 /* set a passing level */
4109                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4110         }
4111
4112         return 0;
4113 }
4114
4115 int qeth_core_load_discipline(struct qeth_card *card,
4116                 enum qeth_discipline_id discipline)
4117 {
4118         int rc = 0;
4119         switch (discipline) {
4120         case QETH_DISCIPLINE_LAYER3:
4121                 card->discipline.ccwgdriver = try_then_request_module(
4122                         symbol_get(qeth_l3_ccwgroup_driver),
4123                         "qeth_l3");
4124                 break;
4125         case QETH_DISCIPLINE_LAYER2:
4126                 card->discipline.ccwgdriver = try_then_request_module(
4127                         symbol_get(qeth_l2_ccwgroup_driver),
4128                         "qeth_l2");
4129                 break;
4130         }
4131         if (!card->discipline.ccwgdriver) {
4132                 PRINT_ERR("Support for discipline %d not present\n",
4133                                 discipline);
4134                 rc = -EINVAL;
4135         }
4136         return rc;
4137 }
4138
4139 void qeth_core_free_discipline(struct qeth_card *card)
4140 {
4141         if (card->options.layer2)
4142                 symbol_put(qeth_l2_ccwgroup_driver);
4143         else
4144                 symbol_put(qeth_l3_ccwgroup_driver);
4145         card->discipline.ccwgdriver = NULL;
4146 }
4147
4148 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4149 {
4150         struct qeth_card *card;
4151         struct device *dev;
4152         int rc;
4153         unsigned long flags;
4154
4155         QETH_DBF_TEXT(SETUP, 2, "probedev");
4156
4157         dev = &gdev->dev;
4158         if (!get_device(dev))
4159                 return -ENODEV;
4160
4161         QETH_DBF_TEXT_(SETUP, 2, "%s", gdev->dev.bus_id);
4162
4163         card = qeth_alloc_card();
4164         if (!card) {
4165                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4166                 rc = -ENOMEM;
4167                 goto err_dev;
4168         }
4169         card->read.ccwdev  = gdev->cdev[0];
4170         card->write.ccwdev = gdev->cdev[1];
4171         card->data.ccwdev  = gdev->cdev[2];
4172         dev_set_drvdata(&gdev->dev, card);
4173         card->gdev = gdev;
4174         gdev->cdev[0]->handler = qeth_irq;
4175         gdev->cdev[1]->handler = qeth_irq;
4176         gdev->cdev[2]->handler = qeth_irq;
4177
4178         rc = qeth_determine_card_type(card);
4179         if (rc) {
4180                 PRINT_WARN("%s: not a valid card type\n", __func__);
4181                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4182                 goto err_card;
4183         }
4184         rc = qeth_setup_card(card);
4185         if (rc) {
4186                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4187                 goto err_card;
4188         }
4189
4190         if (card->info.type == QETH_CARD_TYPE_OSN) {
4191                 rc = qeth_core_create_osn_attributes(dev);
4192                 if (rc)
4193                         goto err_card;
4194                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4195                 if (rc) {
4196                         qeth_core_remove_osn_attributes(dev);
4197                         goto err_card;
4198                 }
4199                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4200                 if (rc) {
4201                         qeth_core_free_discipline(card);
4202                         qeth_core_remove_osn_attributes(dev);
4203                         goto err_card;
4204                 }
4205         } else {
4206                 rc = qeth_core_create_device_attributes(dev);
4207                 if (rc)
4208                         goto err_card;
4209         }
4210
4211         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4212         list_add_tail(&card->list, &qeth_core_card_list.list);
4213         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4214         return 0;
4215
4216 err_card:
4217         qeth_core_free_card(card);
4218 err_dev:
4219         put_device(dev);
4220         return rc;
4221 }
4222
4223 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4224 {
4225         unsigned long flags;
4226         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4227
4228         if (card->discipline.ccwgdriver) {
4229                 card->discipline.ccwgdriver->remove(gdev);
4230                 qeth_core_free_discipline(card);
4231         }
4232
4233         if (card->info.type == QETH_CARD_TYPE_OSN) {
4234                 qeth_core_remove_osn_attributes(&gdev->dev);
4235         } else {
4236                 qeth_core_remove_device_attributes(&gdev->dev);
4237         }
4238         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4239         list_del(&card->list);
4240         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4241         qeth_core_free_card(card);
4242         dev_set_drvdata(&gdev->dev, NULL);
4243         put_device(&gdev->dev);
4244         return;
4245 }
4246
4247 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4248 {
4249         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4250         int rc = 0;
4251         int def_discipline;
4252
4253         if (!card->discipline.ccwgdriver) {
4254                 if (card->info.type == QETH_CARD_TYPE_IQD)
4255                         def_discipline = QETH_DISCIPLINE_LAYER3;
4256                 else
4257                         def_discipline = QETH_DISCIPLINE_LAYER2;
4258                 rc = qeth_core_load_discipline(card, def_discipline);
4259                 if (rc)
4260                         goto err;
4261                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4262                 if (rc)
4263                         goto err;
4264         }
4265         rc = card->discipline.ccwgdriver->set_online(gdev);
4266 err:
4267         return rc;
4268 }
4269
4270 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4271 {
4272         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4273         return card->discipline.ccwgdriver->set_offline(gdev);
4274 }
4275
4276 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4277 {
4278         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4279         if (card->discipline.ccwgdriver &&
4280             card->discipline.ccwgdriver->shutdown)
4281                 card->discipline.ccwgdriver->shutdown(gdev);
4282 }
4283
4284 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4285         .owner = THIS_MODULE,
4286         .name = "qeth",
4287         .driver_id = 0xD8C5E3C8,
4288         .probe = qeth_core_probe_device,
4289         .remove = qeth_core_remove_device,
4290         .set_online = qeth_core_set_online,
4291         .set_offline = qeth_core_set_offline,
4292         .shutdown = qeth_core_shutdown,
4293 };
4294
4295 static ssize_t
4296 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4297                            size_t count)
4298 {
4299         int err;
4300         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4301                                         qeth_core_ccwgroup_driver.driver_id);
4302         if (err)
4303                 return err;
4304         else
4305                 return count;
4306 }
4307
4308 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4309
4310 static struct {
4311         const char str[ETH_GSTRING_LEN];
4312 } qeth_ethtool_stats_keys[] = {
4313 /*  0 */{"rx skbs"},
4314         {"rx buffers"},
4315         {"tx skbs"},
4316         {"tx buffers"},
4317         {"tx skbs no packing"},
4318         {"tx buffers no packing"},
4319         {"tx skbs packing"},
4320         {"tx buffers packing"},
4321         {"tx sg skbs"},
4322         {"tx sg frags"},
4323 /* 10 */{"rx sg skbs"},
4324         {"rx sg frags"},
4325         {"rx sg page allocs"},
4326         {"tx large kbytes"},
4327         {"tx large count"},
4328         {"tx pk state ch n->p"},
4329         {"tx pk state ch p->n"},
4330         {"tx pk watermark low"},
4331         {"tx pk watermark high"},
4332         {"queue 0 buffer usage"},
4333 /* 20 */{"queue 1 buffer usage"},
4334         {"queue 2 buffer usage"},
4335         {"queue 3 buffer usage"},
4336         {"rx handler time"},
4337         {"rx handler count"},
4338         {"rx do_QDIO time"},
4339         {"rx do_QDIO count"},
4340         {"tx handler time"},
4341         {"tx handler count"},
4342         {"tx time"},
4343 /* 30 */{"tx count"},
4344         {"tx do_QDIO time"},
4345         {"tx do_QDIO count"},
4346 };
4347
4348 int qeth_core_get_stats_count(struct net_device *dev)
4349 {
4350         return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4351 }
4352 EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
4353
4354 void qeth_core_get_ethtool_stats(struct net_device *dev,
4355                 struct ethtool_stats *stats, u64 *data)
4356 {
4357         struct qeth_card *card = netdev_priv(dev);
4358         data[0] = card->stats.rx_packets -
4359                                 card->perf_stats.initial_rx_packets;
4360         data[1] = card->perf_stats.bufs_rec;
4361         data[2] = card->stats.tx_packets -
4362                                 card->perf_stats.initial_tx_packets;
4363         data[3] = card->perf_stats.bufs_sent;
4364         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4365                         - card->perf_stats.skbs_sent_pack;
4366         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4367         data[6] = card->perf_stats.skbs_sent_pack;
4368         data[7] = card->perf_stats.bufs_sent_pack;
4369         data[8] = card->perf_stats.sg_skbs_sent;
4370         data[9] = card->perf_stats.sg_frags_sent;
4371         data[10] = card->perf_stats.sg_skbs_rx;
4372         data[11] = card->perf_stats.sg_frags_rx;
4373         data[12] = card->perf_stats.sg_alloc_page_rx;
4374         data[13] = (card->perf_stats.large_send_bytes >> 10);
4375         data[14] = card->perf_stats.large_send_cnt;
4376         data[15] = card->perf_stats.sc_dp_p;
4377         data[16] = card->perf_stats.sc_p_dp;
4378         data[17] = QETH_LOW_WATERMARK_PACK;
4379         data[18] = QETH_HIGH_WATERMARK_PACK;
4380         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4381         data[20] = (card->qdio.no_out_queues > 1) ?
4382                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4383         data[21] = (card->qdio.no_out_queues > 2) ?
4384                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4385         data[22] = (card->qdio.no_out_queues > 3) ?
4386                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4387         data[23] = card->perf_stats.inbound_time;
4388         data[24] = card->perf_stats.inbound_cnt;
4389         data[25] = card->perf_stats.inbound_do_qdio_time;
4390         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4391         data[27] = card->perf_stats.outbound_handler_time;
4392         data[28] = card->perf_stats.outbound_handler_cnt;
4393         data[29] = card->perf_stats.outbound_time;
4394         data[30] = card->perf_stats.outbound_cnt;
4395         data[31] = card->perf_stats.outbound_do_qdio_time;
4396         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4397 }
4398 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4399
4400 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4401 {
4402         switch (stringset) {
4403         case ETH_SS_STATS:
4404                 memcpy(data, &qeth_ethtool_stats_keys,
4405                         sizeof(qeth_ethtool_stats_keys));
4406                 break;
4407         default:
4408                 WARN_ON(1);
4409                 break;
4410         }
4411 }
4412 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4413
4414 void qeth_core_get_drvinfo(struct net_device *dev,
4415                 struct ethtool_drvinfo *info)
4416 {
4417         struct qeth_card *card = netdev_priv(dev);
4418         if (card->options.layer2)
4419                 strcpy(info->driver, "qeth_l2");
4420         else
4421                 strcpy(info->driver, "qeth_l3");
4422
4423         strcpy(info->version, "1.0");
4424         strcpy(info->fw_version, card->info.mcl_level);
4425         sprintf(info->bus_info, "%s/%s/%s",
4426                         CARD_RDEV_ID(card),
4427                         CARD_WDEV_ID(card),
4428                         CARD_DDEV_ID(card));
4429 }
4430 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4431
4432 static int __init qeth_core_init(void)
4433 {
4434         int rc;
4435
4436         PRINT_INFO("loading core functions\n");
4437         INIT_LIST_HEAD(&qeth_core_card_list.list);
4438         rwlock_init(&qeth_core_card_list.rwlock);
4439
4440         rc = qeth_register_dbf_views();
4441         if (rc)
4442                 goto out_err;
4443         rc = ccw_driver_register(&qeth_ccw_driver);
4444         if (rc)
4445                 goto ccw_err;
4446         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4447         if (rc)
4448                 goto ccwgroup_err;
4449         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4450                                 &driver_attr_group);
4451         if (rc)
4452                 goto driver_err;
4453         qeth_core_root_dev = s390_root_dev_register("qeth");
4454         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4455         if (rc)
4456                 goto register_err;
4457         return 0;
4458
4459 register_err:
4460         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4461                            &driver_attr_group);
4462 driver_err:
4463         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4464 ccwgroup_err:
4465         ccw_driver_unregister(&qeth_ccw_driver);
4466 ccw_err:
4467         qeth_unregister_dbf_views();
4468 out_err:
4469         PRINT_ERR("Initialization failed with code %d\n", rc);
4470         return rc;
4471 }
4472
4473 static void __exit qeth_core_exit(void)
4474 {
4475         s390_root_dev_unregister(qeth_core_root_dev);
4476         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4477                            &driver_attr_group);
4478         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4479         ccw_driver_unregister(&qeth_ccw_driver);
4480         qeth_unregister_dbf_views();
4481         PRINT_INFO("core functions removed\n");
4482 }
4483
4484 module_init(qeth_core_init);
4485 module_exit(qeth_core_exit);
4486 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4487 MODULE_DESCRIPTION("qeth core functions");
4488 MODULE_LICENSE("GPL");