drivers/s390/net/qeth_core_main.c

   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 #define QETH_DBF_TEXT_(name, level, text...) \
  30         do { \
  31                 if (qeth_dbf_passes(qeth_dbf_##name, level)) { \
  32                         char *dbf_txt_buf = \
  33                                 get_cpu_var(qeth_core_dbf_txt_buf); \
  34                         sprintf(dbf_txt_buf, text); \
  35                         debug_text_event(qeth_dbf_##name, level, dbf_txt_buf); \
  36                         put_cpu_var(qeth_core_dbf_txt_buf); \
  37                 } \
  38         } while (0)
  39
  40 struct qeth_card_list_struct qeth_core_card_list;
  41 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  42 debug_info_t *qeth_dbf_setup;
  43 EXPORT_SYMBOL_GPL(qeth_dbf_setup);
  44 debug_info_t *qeth_dbf_data;
  45 EXPORT_SYMBOL_GPL(qeth_dbf_data);
  46 debug_info_t *qeth_dbf_misc;
  47 EXPORT_SYMBOL_GPL(qeth_dbf_misc);
  48 debug_info_t *qeth_dbf_control;
  49 EXPORT_SYMBOL_GPL(qeth_dbf_control);
  50 debug_info_t *qeth_dbf_trace;
  51 EXPORT_SYMBOL_GPL(qeth_dbf_trace);
  52 debug_info_t *qeth_dbf_sense;
  53 EXPORT_SYMBOL_GPL(qeth_dbf_sense);
  54 debug_info_t *qeth_dbf_qerr;
  55 EXPORT_SYMBOL_GPL(qeth_dbf_qerr);
  56
  57 static struct device *qeth_core_root_dev;
  58 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  59 static struct lock_class_key qdio_out_skb_queue_key;
  60 static DEFINE_PER_CPU(char[256], qeth_core_dbf_txt_buf);
  61
  62 static void qeth_send_control_data_cb(struct qeth_channel *,
  63                         struct qeth_cmd_buffer *);
  64 static int qeth_issue_next_read(struct qeth_card *);
  65 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  66 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  67 static void qeth_free_buffer_pool(struct qeth_card *);
  68 static int qeth_qdio_establish(struct qeth_card *);
  69
  70
  71 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  72                 struct qdio_buffer *buffer, int is_tso,
  73                 int *next_element_to_fill)
  74 {
  75         struct skb_frag_struct *frag;
  76         int fragno;
  77         unsigned long addr;
  78         int element, cnt, dlen;
  79
  80         fragno = skb_shinfo(skb)->nr_frags;
  81         element = *next_element_to_fill;
  82         dlen = 0;
  83
  84         if (is_tso)
  85                 buffer->element[element].flags =
  86                         SBAL_FLAGS_MIDDLE_FRAG;
  87         else
  88                 buffer->element[element].flags =
  89                         SBAL_FLAGS_FIRST_FRAG;
  90         dlen = skb->len - skb->data_len;
  91         if (dlen) {
  92                 buffer->element[element].addr = skb->data;
  93                 buffer->element[element].length = dlen;
  94                 element++;
  95         }
  96         for (cnt = 0; cnt < fragno; cnt++) {
  97                 frag = &skb_shinfo(skb)->frags[cnt];
  98                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  99                         frag->page_offset;
 100                 buffer->element[element].addr = (char *)addr;
 101                 buffer->element[element].length = frag->size;
 102                 if (cnt < (fragno - 1))
 103                         buffer->element[element].flags =
 104                                 SBAL_FLAGS_MIDDLE_FRAG;
 105                 else
 106                         buffer->element[element].flags =
 107                                 SBAL_FLAGS_LAST_FRAG;
 108                 element++;
 109         }
 110         *next_element_to_fill = element;
 111 }
 112
 113 static inline const char *qeth_get_cardname(struct qeth_card *card)
 114 {
 115         if (card->info.guestlan) {
 116                 switch (card->info.type) {
 117                 case QETH_CARD_TYPE_OSAE:
 118                         return " Guest LAN QDIO";
 119                 case QETH_CARD_TYPE_IQD:
 120                         return " Guest LAN Hiper";
 121                 default:
 122                         return " unknown";
 123                 }
 124         } else {
 125                 switch (card->info.type) {
 126                 case QETH_CARD_TYPE_OSAE:
 127                         return " OSD Express";
 128                 case QETH_CARD_TYPE_IQD:
 129                         return " HiperSockets";
 130                 case QETH_CARD_TYPE_OSN:
 131                         return " OSN QDIO";
 132                 default:
 133                         return " unknown";
 134                 }
 135         }
 136         return " n/a";
 137 }
 138
 139 /* max length to be returned: 14 */
 140 const char *qeth_get_cardname_short(struct qeth_card *card)
 141 {
 142         if (card->info.guestlan) {
 143                 switch (card->info.type) {
 144                 case QETH_CARD_TYPE_OSAE:
 145                         return "GuestLAN QDIO";
 146                 case QETH_CARD_TYPE_IQD:
 147                         return "GuestLAN Hiper";
 148                 default:
 149                         return "unknown";
 150                 }
 151         } else {
 152                 switch (card->info.type) {
 153                 case QETH_CARD_TYPE_OSAE:
 154                         switch (card->info.link_type) {
 155                         case QETH_LINK_TYPE_FAST_ETH:
 156                                 return "OSD_100";
 157                         case QETH_LINK_TYPE_HSTR:
 158                                 return "HSTR";
 159                         case QETH_LINK_TYPE_GBIT_ETH:
 160                                 return "OSD_1000";
 161                         case QETH_LINK_TYPE_10GBIT_ETH:
 162                                 return "OSD_10GIG";
 163                         case QETH_LINK_TYPE_LANE_ETH100:
 164                                 return "OSD_FE_LANE";
 165                         case QETH_LINK_TYPE_LANE_TR:
 166                                 return "OSD_TR_LANE";
 167                         case QETH_LINK_TYPE_LANE_ETH1000:
 168                                 return "OSD_GbE_LANE";
 169                         case QETH_LINK_TYPE_LANE:
 170                                 return "OSD_ATM_LANE";
 171                         default:
 172                                 return "OSD_Express";
 173                         }
 174                 case QETH_CARD_TYPE_IQD:
 175                         return "HiperSockets";
 176                 case QETH_CARD_TYPE_OSN:
 177                         return "OSN";
 178                 default:
 179                         return "unknown";
 180                 }
 181         }
 182         return "n/a";
 183 }
 184
 185 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 186                          int clear_start_mask)
 187 {
 188         unsigned long flags;
 189
 190         spin_lock_irqsave(&card->thread_mask_lock, flags);
 191         card->thread_allowed_mask = threads;
 192         if (clear_start_mask)
 193                 card->thread_start_mask &= threads;
 194         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 195         wake_up(&card->wait_q);
 196 }
 197 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 198
 199 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 200 {
 201         unsigned long flags;
 202         int rc = 0;
 203
 204         spin_lock_irqsave(&card->thread_mask_lock, flags);
 205         rc = (card->thread_running_mask & threads);
 206         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 207         return rc;
 208 }
 209 EXPORT_SYMBOL_GPL(qeth_threads_running);
 210
 211 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 212 {
 213         return wait_event_interruptible(card->wait_q,
 214                         qeth_threads_running(card, threads) == 0);
 215 }
 216 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 217
 218 void qeth_clear_working_pool_list(struct qeth_card *card)
 219 {
 220         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 221
 222         QETH_DBF_TEXT(trace, 5, "clwrklst");
 223         list_for_each_entry_safe(pool_entry, tmp,
 224                             &card->qdio.in_buf_pool.entry_list, list){
 225                         list_del(&pool_entry->list);
 226         }
 227 }
 228 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 229
 230 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 231 {
 232         struct qeth_buffer_pool_entry *pool_entry;
 233         void *ptr;
 234         int i, j;
 235
 236         QETH_DBF_TEXT(trace, 5, "alocpool");
 237         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 238                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 239                 if (!pool_entry) {
 240                         qeth_free_buffer_pool(card);
 241                         return -ENOMEM;
 242                 }
 243                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 244                         ptr = (void *) __get_free_page(GFP_KERNEL|GFP_DMA);
 245                         if (!ptr) {
 246                                 while (j > 0)
 247                                         free_page((unsigned long)
 248                                                   pool_entry->elements[--j]);
 249                                 kfree(pool_entry);
 250                                 qeth_free_buffer_pool(card);
 251                                 return -ENOMEM;
 252                         }
 253                         pool_entry->elements[j] = ptr;
 254                 }
 255                 list_add(&pool_entry->init_list,
 256                          &card->qdio.init_pool.entry_list);
 257         }
 258         return 0;
 259 }
 260
 261 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 262 {
 263         QETH_DBF_TEXT(trace, 2, "realcbp");
 264
 265         if ((card->state != CARD_STATE_DOWN) &&
 266             (card->state != CARD_STATE_RECOVER))
 267                 return -EPERM;
 268
 269         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 270         qeth_clear_working_pool_list(card);
 271         qeth_free_buffer_pool(card);
 272         card->qdio.in_buf_pool.buf_count = bufcnt;
 273         card->qdio.init_pool.buf_count = bufcnt;
 274         return qeth_alloc_buffer_pool(card);
 275 }
 276
 277 int qeth_set_large_send(struct qeth_card *card,
 278                 enum qeth_large_send_types type)
 279 {
 280         int rc = 0;
 281
 282         if (card->dev == NULL) {
 283                 card->options.large_send = type;
 284                 return 0;
 285         }
 286         if (card->state == CARD_STATE_UP)
 287                 netif_tx_disable(card->dev);
 288         card->options.large_send = type;
 289         switch (card->options.large_send) {
 290         case QETH_LARGE_SEND_EDDP:
 291                 card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 292                                         NETIF_F_HW_CSUM;
 293                 break;
 294         case QETH_LARGE_SEND_TSO:
 295                 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
 296                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
 297                                                 NETIF_F_HW_CSUM;
 298                 } else {
 299                         PRINT_WARN("TSO not supported on %s. "
 300                                    "large_send set to 'no'.\n",
 301                                    card->dev->name);
 302                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 303                                                 NETIF_F_HW_CSUM);
 304                         card->options.large_send = QETH_LARGE_SEND_NO;
 305                         rc = -EOPNOTSUPP;
 306                 }
 307                 break;
 308         default: /* includes QETH_LARGE_SEND_NO */
 309                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
 310                                         NETIF_F_HW_CSUM);
 311                 break;
 312         }
 313         if (card->state == CARD_STATE_UP)
 314                 netif_wake_queue(card->dev);
 315         return rc;
 316 }
 317 EXPORT_SYMBOL_GPL(qeth_set_large_send);
 318
 319 static int qeth_issue_next_read(struct qeth_card *card)
 320 {
 321         int rc;
 322         struct qeth_cmd_buffer *iob;
 323
 324         QETH_DBF_TEXT(trace, 5, "issnxrd");
 325         if (card->read.state != CH_STATE_UP)
 326                 return -EIO;
 327         iob = qeth_get_buffer(&card->read);
 328         if (!iob) {
 329                 PRINT_WARN("issue_next_read failed: no iob available!\n");
 330                 return -ENOMEM;
 331         }
 332         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 333         QETH_DBF_TEXT(trace, 6, "noirqpnd");
 334         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 335                               (addr_t) iob, 0, 0);
 336         if (rc) {
 337                 PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
 338                 atomic_set(&card->read.irq_pending, 0);
 339                 qeth_schedule_recovery(card);
 340                 wake_up(&card->wait_q);
 341         }
 342         return rc;
 343 }
 344
 345 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 346 {
 347         struct qeth_reply *reply;
 348
 349         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 350         if (reply) {
 351                 atomic_set(&reply->refcnt, 1);
 352                 atomic_set(&reply->received, 0);
 353                 reply->card = card;
 354         };
 355         return reply;
 356 }
 357
 358 static void qeth_get_reply(struct qeth_reply *reply)
 359 {
 360         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 361         atomic_inc(&reply->refcnt);
 362 }
 363
 364 static void qeth_put_reply(struct qeth_reply *reply)
 365 {
 366         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 367         if (atomic_dec_and_test(&reply->refcnt))
 368                 kfree(reply);
 369 }
 370
 371 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd,
 372                 struct qeth_card *card)
 373 {
 374         int rc;
 375         int com;
 376         char *ipa_name;
 377
 378         com = cmd->hdr.command;
 379         rc  = cmd->hdr.return_code;
 380         ipa_name = qeth_get_ipa_cmd_name(com);
 381
 382         PRINT_ERR("%s(x%X) for %s returned x%X \"%s\"\n", ipa_name, com,
 383                    QETH_CARD_IFNAME(card), rc, qeth_get_ipa_msg(rc));
 384 }
 385
 386 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 387                 struct qeth_cmd_buffer *iob)
 388 {
 389         struct qeth_ipa_cmd *cmd = NULL;
 390
 391         QETH_DBF_TEXT(trace, 5, "chkipad");
 392         if (IS_IPA(iob->data)) {
 393                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 394                 if (IS_IPA_REPLY(cmd)) {
 395                         if (cmd->hdr.return_code &&
 396                             (cmd->hdr.command < IPA_CMD_SETCCID ||
 397                              cmd->hdr.command > IPA_CMD_MODCCID))
 398                                 qeth_issue_ipa_msg(cmd, card);
 399                         return cmd;
 400                 } else {
 401                         switch (cmd->hdr.command) {
 402                         case IPA_CMD_STOPLAN:
 403                                 PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
 404                                            "there is a network problem or "
 405                                            "someone pulled the cable or "
 406                                            "disabled the port.\n",
 407                                            QETH_CARD_IFNAME(card),
 408                                            card->info.chpid);
 409                                 card->lan_online = 0;
 410                                 if (card->dev && netif_carrier_ok(card->dev))
 411                                         netif_carrier_off(card->dev);
 412                                 return NULL;
 413                         case IPA_CMD_STARTLAN:
 414                                 PRINT_INFO("Link reestablished on %s "
 415                                            "(CHPID 0x%X). Scheduling "
 416                                            "IP address reset.\n",
 417                                            QETH_CARD_IFNAME(card),
 418                                            card->info.chpid);
 419                                 netif_carrier_on(card->dev);
 420                                 qeth_schedule_recovery(card);
 421                                 return NULL;
 422                         case IPA_CMD_MODCCID:
 423                                 return cmd;
 424                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 425                                 QETH_DBF_TEXT(trace, 3, "irla");
 426                                 break;
 427                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 428                                 QETH_DBF_TEXT(trace, 3, "urla");
 429                                 break;
 430                         default:
 431                                 PRINT_WARN("Received data is IPA "
 432                                            "but not a reply!\n");
 433                                 break;
 434                         }
 435                 }
 436         }
 437         return cmd;
 438 }
 439
 440 void qeth_clear_ipacmd_list(struct qeth_card *card)
 441 {
 442         struct qeth_reply *reply, *r;
 443         unsigned long flags;
 444
 445         QETH_DBF_TEXT(trace, 4, "clipalst");
 446
 447         spin_lock_irqsave(&card->lock, flags);
 448         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 449                 qeth_get_reply(reply);
 450                 reply->rc = -EIO;
 451                 atomic_inc(&reply->received);
 452                 list_del_init(&reply->list);
 453                 wake_up(&reply->wait_q);
 454                 qeth_put_reply(reply);
 455         }
 456         spin_unlock_irqrestore(&card->lock, flags);
 457 }
 458 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 459
 460 static int qeth_check_idx_response(unsigned char *buffer)
 461 {
 462         if (!buffer)
 463                 return 0;
 464
 465         QETH_DBF_HEX(control, 2, buffer, QETH_DBF_CONTROL_LEN);
 466         if ((buffer[2] & 0xc0) == 0xc0) {
 467                 PRINT_WARN("received an IDX TERMINATE "
 468                            "with cause code 0x%02x%s\n",
 469                            buffer[4],
 470                            ((buffer[4] == 0x22) ?
 471                             " -- try another portname" : ""));
 472                 QETH_DBF_TEXT(trace, 2, "ckidxres");
 473                 QETH_DBF_TEXT(trace, 2, " idxterm");
 474                 QETH_DBF_TEXT_(trace, 2, "  rc%d", -EIO);
 475                 return -EIO;
 476         }
 477         return 0;
 478 }
 479
 480 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 481                 __u32 len)
 482 {
 483         struct qeth_card *card;
 484
 485         QETH_DBF_TEXT(trace, 4, "setupccw");
 486         card = CARD_FROM_CDEV(channel->ccwdev);
 487         if (channel == &card->read)
 488                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 489         else
 490                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 491         channel->ccw.count = len;
 492         channel->ccw.cda = (__u32) __pa(iob);
 493 }
 494
 495 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 496 {
 497         __u8 index;
 498
 499         QETH_DBF_TEXT(trace, 6, "getbuff");
 500         index = channel->io_buf_no;
 501         do {
 502                 if (channel->iob[index].state == BUF_STATE_FREE) {
 503                         channel->iob[index].state = BUF_STATE_LOCKED;
 504                         channel->io_buf_no = (channel->io_buf_no + 1) %
 505                                 QETH_CMD_BUFFER_NO;
 506                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 507                         return channel->iob + index;
 508                 }
 509                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 510         } while (index != channel->io_buf_no);
 511
 512         return NULL;
 513 }
 514
 515 void qeth_release_buffer(struct qeth_channel *channel,
 516                 struct qeth_cmd_buffer *iob)
 517 {
 518         unsigned long flags;
 519
 520         QETH_DBF_TEXT(trace, 6, "relbuff");
 521         spin_lock_irqsave(&channel->iob_lock, flags);
 522         memset(iob->data, 0, QETH_BUFSIZE);
 523         iob->state = BUF_STATE_FREE;
 524         iob->callback = qeth_send_control_data_cb;
 525         iob->rc = 0;
 526         spin_unlock_irqrestore(&channel->iob_lock, flags);
 527 }
 528 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 529
 530 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 531 {
 532         struct qeth_cmd_buffer *buffer = NULL;
 533         unsigned long flags;
 534
 535         spin_lock_irqsave(&channel->iob_lock, flags);
 536         buffer = __qeth_get_buffer(channel);
 537         spin_unlock_irqrestore(&channel->iob_lock, flags);
 538         return buffer;
 539 }
 540
 541 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 542 {
 543         struct qeth_cmd_buffer *buffer;
 544         wait_event(channel->wait_q,
 545                    ((buffer = qeth_get_buffer(channel)) != NULL));
 546         return buffer;
 547 }
 548 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 549
 550 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 551 {
 552         int cnt;
 553
 554         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 555                 qeth_release_buffer(channel, &channel->iob[cnt]);
 556         channel->buf_no = 0;
 557         channel->io_buf_no = 0;
 558 }
 559 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 560
 561 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 562                   struct qeth_cmd_buffer *iob)
 563 {
 564         struct qeth_card *card;
 565         struct qeth_reply *reply, *r;
 566         struct qeth_ipa_cmd *cmd;
 567         unsigned long flags;
 568         int keep_reply;
 569
 570         QETH_DBF_TEXT(trace, 4, "sndctlcb");
 571
 572         card = CARD_FROM_CDEV(channel->ccwdev);
 573         if (qeth_check_idx_response(iob->data)) {
 574                 qeth_clear_ipacmd_list(card);
 575                 qeth_schedule_recovery(card);
 576                 goto out;
 577         }
 578
 579         cmd = qeth_check_ipa_data(card, iob);
 580         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 581                 goto out;
 582         /*in case of OSN : check if cmd is set */
 583         if (card->info.type == QETH_CARD_TYPE_OSN &&
 584             cmd &&
 585             cmd->hdr.command != IPA_CMD_STARTLAN &&
 586             card->osn_info.assist_cb != NULL) {
 587                 card->osn_info.assist_cb(card->dev, cmd);
 588                 goto out;
 589         }
 590
 591         spin_lock_irqsave(&card->lock, flags);
 592         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 593                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 594                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 595                         qeth_get_reply(reply);
 596                         list_del_init(&reply->list);
 597                         spin_unlock_irqrestore(&card->lock, flags);
 598                         keep_reply = 0;
 599                         if (reply->callback != NULL) {
 600                                 if (cmd) {
 601                                         reply->offset = (__u16)((char *)cmd -
 602                                                         (char *)iob->data);
 603                                         keep_reply = reply->callback(card,
 604                                                         reply,
 605                                                         (unsigned long)cmd);
 606                                 } else
 607                                         keep_reply = reply->callback(card,
 608                                                         reply,
 609                                                         (unsigned long)iob);
 610                         }
 611                         if (cmd)
 612                                 reply->rc = (u16) cmd->hdr.return_code;
 613                         else if (iob->rc)
 614                                 reply->rc = iob->rc;
 615                         if (keep_reply) {
 616                                 spin_lock_irqsave(&card->lock, flags);
 617                                 list_add_tail(&reply->list,
 618                                               &card->cmd_waiter_list);
 619                                 spin_unlock_irqrestore(&card->lock, flags);
 620                         } else {
 621                                 atomic_inc(&reply->received);
 622                                 wake_up(&reply->wait_q);
 623                         }
 624                         qeth_put_reply(reply);
 625                         goto out;
 626                 }
 627         }
 628         spin_unlock_irqrestore(&card->lock, flags);
 629 out:
 630         memcpy(&card->seqno.pdu_hdr_ack,
 631                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 632                 QETH_SEQ_NO_LENGTH);
 633         qeth_release_buffer(channel, iob);
 634 }
 635
 636 static int qeth_setup_channel(struct qeth_channel *channel)
 637 {
 638         int cnt;
 639
 640         QETH_DBF_TEXT(setup, 2, "setupch");
 641         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 642                 channel->iob[cnt].data = (char *)
 643                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 644                 if (channel->iob[cnt].data == NULL)
 645                         break;
 646                 channel->iob[cnt].state = BUF_STATE_FREE;
 647                 channel->iob[cnt].channel = channel;
 648                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 649                 channel->iob[cnt].rc = 0;
 650         }
 651         if (cnt < QETH_CMD_BUFFER_NO) {
 652                 while (cnt-- > 0)
 653                         kfree(channel->iob[cnt].data);
 654                 return -ENOMEM;
 655         }
 656         channel->buf_no = 0;
 657         channel->io_buf_no = 0;
 658         atomic_set(&channel->irq_pending, 0);
 659         spin_lock_init(&channel->iob_lock);
 660
 661         init_waitqueue_head(&channel->wait_q);
 662         return 0;
 663 }
 664
 665 static int qeth_set_thread_start_bit(struct qeth_card *card,
 666                 unsigned long thread)
 667 {
 668         unsigned long flags;
 669
 670         spin_lock_irqsave(&card->thread_mask_lock, flags);
 671         if (!(card->thread_allowed_mask & thread) ||
 672               (card->thread_start_mask & thread)) {
 673                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 674                 return -EPERM;
 675         }
 676         card->thread_start_mask |= thread;
 677         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 678         return 0;
 679 }
 680
 681 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 682 {
 683         unsigned long flags;
 684
 685         spin_lock_irqsave(&card->thread_mask_lock, flags);
 686         card->thread_start_mask &= ~thread;
 687         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 688         wake_up(&card->wait_q);
 689 }
 690 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 691
 692 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 693 {
 694         unsigned long flags;
 695
 696         spin_lock_irqsave(&card->thread_mask_lock, flags);
 697         card->thread_running_mask &= ~thread;
 698         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 699         wake_up(&card->wait_q);
 700 }
 701 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 702
 703 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 704 {
 705         unsigned long flags;
 706         int rc = 0;
 707
 708         spin_lock_irqsave(&card->thread_mask_lock, flags);
 709         if (card->thread_start_mask & thread) {
 710                 if ((card->thread_allowed_mask & thread) &&
 711                     !(card->thread_running_mask & thread)) {
 712                         rc = 1;
 713                         card->thread_start_mask &= ~thread;
 714                         card->thread_running_mask |= thread;
 715                 } else
 716                         rc = -EPERM;
 717         }
 718         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 719         return rc;
 720 }
 721
 722 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 723 {
 724         int rc = 0;
 725
 726         wait_event(card->wait_q,
 727                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 728         return rc;
 729 }
 730 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 731
 732 void qeth_schedule_recovery(struct qeth_card *card)
 733 {
 734         QETH_DBF_TEXT(trace, 2, "startrec");
 735         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 736                 schedule_work(&card->kernel_thread_starter);
 737 }
 738 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 739
 740 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 741 {
 742         int dstat, cstat;
 743         char *sense;
 744
 745         sense = (char *) irb->ecw;
 746         cstat = irb->scsw.cstat;
 747         dstat = irb->scsw.dstat;
 748
 749         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 750                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 751                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 752                 QETH_DBF_TEXT(trace, 2, "CGENCHK");
 753                 PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
 754                            cdev->dev.bus_id, dstat, cstat);
 755                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 756                                 16, 1, irb, 64, 1);
 757                 return 1;
 758         }
 759
 760         if (dstat & DEV_STAT_UNIT_CHECK) {
 761                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 762                     SENSE_RESETTING_EVENT_FLAG) {
 763                         QETH_DBF_TEXT(trace, 2, "REVIND");
 764                         return 1;
 765                 }
 766                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 767                     SENSE_COMMAND_REJECT_FLAG) {
 768                         QETH_DBF_TEXT(trace, 2, "CMDREJi");
 769                         return 0;
 770                 }
 771                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 772                         QETH_DBF_TEXT(trace, 2, "AFFE");
 773                         return 1;
 774                 }
 775                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 776                         QETH_DBF_TEXT(trace, 2, "ZEROSEN");
 777                         return 0;
 778                 }
 779                 QETH_DBF_TEXT(trace, 2, "DGENCHK");
 780                         return 1;
 781         }
 782         return 0;
 783 }
 784
 785 static long __qeth_check_irb_error(struct ccw_device *cdev,
 786                 unsigned long intparm, struct irb *irb)
 787 {
 788         if (!IS_ERR(irb))
 789                 return 0;
 790
 791         switch (PTR_ERR(irb)) {
 792         case -EIO:
 793                 PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
 794                 QETH_DBF_TEXT(trace, 2, "ckirberr");
 795                 QETH_DBF_TEXT_(trace, 2, "  rc%d", -EIO);
 796                 break;
 797         case -ETIMEDOUT:
 798                 PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
 799                 QETH_DBF_TEXT(trace, 2, "ckirberr");
 800                 QETH_DBF_TEXT_(trace, 2, "  rc%d", -ETIMEDOUT);
 801                 if (intparm == QETH_RCD_PARM) {
 802                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 803
 804                         if (card && (card->data.ccwdev == cdev)) {
 805                                 card->data.state = CH_STATE_DOWN;
 806                                 wake_up(&card->wait_q);
 807                         }
 808                 }
 809                 break;
 810         default:
 811                 PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
 812                            cdev->dev.bus_id);
 813                 QETH_DBF_TEXT(trace, 2, "ckirberr");
 814                 QETH_DBF_TEXT(trace, 2, "  rc???");
 815         }
 816         return PTR_ERR(irb);
 817 }
 818
 819 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 820                 struct irb *irb)
 821 {
 822         int rc;
 823         int cstat, dstat;
 824         struct qeth_cmd_buffer *buffer;
 825         struct qeth_channel *channel;
 826         struct qeth_card *card;
 827         struct qeth_cmd_buffer *iob;
 828         __u8 index;
 829
 830         QETH_DBF_TEXT(trace, 5, "irq");
 831
 832         if (__qeth_check_irb_error(cdev, intparm, irb))
 833                 return;
 834         cstat = irb->scsw.cstat;
 835         dstat = irb->scsw.dstat;
 836
 837         card = CARD_FROM_CDEV(cdev);
 838         if (!card)
 839                 return;
 840
 841         if (card->read.ccwdev == cdev) {
 842                 channel = &card->read;
 843                 QETH_DBF_TEXT(trace, 5, "read");
 844         } else if (card->write.ccwdev == cdev) {
 845                 channel = &card->write;
 846                 QETH_DBF_TEXT(trace, 5, "write");
 847         } else {
 848                 channel = &card->data;
 849                 QETH_DBF_TEXT(trace, 5, "data");
 850         }
 851         atomic_set(&channel->irq_pending, 0);
 852
 853         if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
 854                 channel->state = CH_STATE_STOPPED;
 855
 856         if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
 857                 channel->state = CH_STATE_HALTED;
 858
 859         /*let's wake up immediately on data channel*/
 860         if ((channel == &card->data) && (intparm != 0) &&
 861             (intparm != QETH_RCD_PARM))
 862                 goto out;
 863
 864         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 865                 QETH_DBF_TEXT(trace, 6, "clrchpar");
 866                 /* we don't have to handle this further */
 867                 intparm = 0;
 868         }
 869         if (intparm == QETH_HALT_CHANNEL_PARM) {
 870                 QETH_DBF_TEXT(trace, 6, "hltchpar");
 871                 /* we don't have to handle this further */
 872                 intparm = 0;
 873         }
 874         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 875             (dstat & DEV_STAT_UNIT_CHECK) ||
 876             (cstat)) {
 877                 if (irb->esw.esw0.erw.cons) {
 878                         /* TODO: we should make this s390dbf */
 879                         PRINT_WARN("sense data available on channel %s.\n",
 880                                    CHANNEL_ID(channel));
 881                         PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat);
 882                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 883                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 884                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 885                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 886                 }
 887                 if (intparm == QETH_RCD_PARM) {
 888                         channel->state = CH_STATE_DOWN;
 889                         goto out;
 890                 }
 891                 rc = qeth_get_problem(cdev, irb);
 892                 if (rc) {
 893                         qeth_schedule_recovery(card);
 894                         goto out;
 895                 }
 896         }
 897
 898         if (intparm == QETH_RCD_PARM) {
 899                 channel->state = CH_STATE_RCD_DONE;
 900                 goto out;
 901         }
 902         if (intparm) {
 903                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 904                 buffer->state = BUF_STATE_PROCESSED;
 905         }
 906         if (channel == &card->data)
 907                 return;
 908         if (channel == &card->read &&
 909             channel->state == CH_STATE_UP)
 910                 qeth_issue_next_read(card);
 911
 912         iob = channel->iob;
 913         index = channel->buf_no;
 914         while (iob[index].state == BUF_STATE_PROCESSED) {
 915                 if (iob[index].callback != NULL)
 916                         iob[index].callback(channel, iob + index);
 917
 918                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 919         }
 920         channel->buf_no = index;
 921 out:
 922         wake_up(&card->wait_q);
 923         return;
 924 }
 925
 926 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 927                  struct qeth_qdio_out_buffer *buf)
 928 {
 929         int i;
 930         struct sk_buff *skb;
 931
 932         /* is PCI flag set on buffer? */
 933         if (buf->buffer->element[0].flags & 0x40)
 934                 atomic_dec(&queue->set_pci_flags_count);
 935
 936         skb = skb_dequeue(&buf->skb_list);
 937         while (skb) {
 938                 atomic_dec(&skb->users);
 939                 dev_kfree_skb_any(skb);
 940                 skb = skb_dequeue(&buf->skb_list);
 941         }
 942         qeth_eddp_buf_release_contexts(buf);
 943         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 944                 buf->buffer->element[i].length = 0;
 945                 buf->buffer->element[i].addr = NULL;
 946                 buf->buffer->element[i].flags = 0;
 947         }
 948         buf->next_element_to_fill = 0;
 949         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 950 }
 951
 952 void qeth_clear_qdio_buffers(struct qeth_card *card)
 953 {
 954         int i, j;
 955
 956         QETH_DBF_TEXT(trace, 2, "clearqdbf");
 957         /* clear outbound buffers to free skbs */
 958         for (i = 0; i < card->qdio.no_out_queues; ++i)
 959                 if (card->qdio.out_qs[i]) {
 960                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 961                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 962                                                 &card->qdio.out_qs[i]->bufs[j]);
 963                 }
 964 }
 965 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 966
 967 static void qeth_free_buffer_pool(struct qeth_card *card)
 968 {
 969         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 970         int i = 0;
 971         QETH_DBF_TEXT(trace, 5, "freepool");
 972         list_for_each_entry_safe(pool_entry, tmp,
 973                                  &card->qdio.init_pool.entry_list, init_list){
 974                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 975                         free_page((unsigned long)pool_entry->elements[i]);
 976                 list_del(&pool_entry->init_list);
 977                 kfree(pool_entry);
 978         }
 979 }
 980
 981 static void qeth_free_qdio_buffers(struct qeth_card *card)
 982 {
 983         int i, j;
 984
 985         QETH_DBF_TEXT(trace, 2, "freeqdbf");
 986         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 987                 QETH_QDIO_UNINITIALIZED)
 988                 return;
 989         kfree(card->qdio.in_q);
 990         card->qdio.in_q = NULL;
 991         /* inbound buffer pool */
 992         qeth_free_buffer_pool(card);
 993         /* free outbound qdio_qs */
 994         if (card->qdio.out_qs) {
 995                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 996                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 997                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 998                                                 &card->qdio.out_qs[i]->bufs[j]);
 999                         kfree(card->qdio.out_qs[i]);
1000                 }
1001                 kfree(card->qdio.out_qs);
1002                 card->qdio.out_qs = NULL;
1003         }
1004 }
1005
1006 static void qeth_clean_channel(struct qeth_channel *channel)
1007 {
1008         int cnt;
1009
1010         QETH_DBF_TEXT(setup, 2, "freech");
1011         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1012                 kfree(channel->iob[cnt].data);
1013 }
1014
1015 static int qeth_is_1920_device(struct qeth_card *card)
1016 {
1017         int single_queue = 0;
1018         struct ccw_device *ccwdev;
1019         struct channelPath_dsc {
1020                 u8 flags;
1021                 u8 lsn;
1022                 u8 desc;
1023                 u8 chpid;
1024                 u8 swla;
1025                 u8 zeroes;
1026                 u8 chla;
1027                 u8 chpp;
1028         } *chp_dsc;
1029
1030         QETH_DBF_TEXT(setup, 2, "chk_1920");
1031
1032         ccwdev = card->data.ccwdev;
1033         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1034         if (chp_dsc != NULL) {
1035                 /* CHPP field bit 6 == 1 -> single queue */
1036                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1037                 kfree(chp_dsc);
1038         }
1039         QETH_DBF_TEXT_(setup, 2, "rc:%x", single_queue);
1040         return single_queue;
1041 }
1042
1043 static void qeth_init_qdio_info(struct qeth_card *card)
1044 {
1045         QETH_DBF_TEXT(setup, 4, "intqdinf");
1046         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1047         /* inbound */
1048         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1049         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1050         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1051         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1052         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1053 }
1054
1055 static void qeth_set_intial_options(struct qeth_card *card)
1056 {
1057         card->options.route4.type = NO_ROUTER;
1058         card->options.route6.type = NO_ROUTER;
1059         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1060         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1061         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1062         card->options.fake_broadcast = 0;
1063         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1064         card->options.fake_ll = 0;
1065         card->options.performance_stats = 0;
1066         card->options.rx_sg_cb = QETH_RX_SG_CB;
1067 }
1068
1069 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1070 {
1071         unsigned long flags;
1072         int rc = 0;
1073
1074         spin_lock_irqsave(&card->thread_mask_lock, flags);
1075         QETH_DBF_TEXT_(trace, 4, "  %02x%02x%02x",
1076                         (u8) card->thread_start_mask,
1077                         (u8) card->thread_allowed_mask,
1078                         (u8) card->thread_running_mask);
1079         rc = (card->thread_start_mask & thread);
1080         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1081         return rc;
1082 }
1083
1084 static void qeth_start_kernel_thread(struct work_struct *work)
1085 {
1086         struct qeth_card *card = container_of(work, struct qeth_card,
1087                                         kernel_thread_starter);
1088         QETH_DBF_TEXT(trace , 2, "strthrd");
1089
1090         if (card->read.state != CH_STATE_UP &&
1091             card->write.state != CH_STATE_UP)
1092                 return;
1093         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1094                 kthread_run(card->discipline.recover, (void *) card,
1095                                 "qeth_recover");
1096 }
1097
1098 static int qeth_setup_card(struct qeth_card *card)
1099 {
1100
1101         QETH_DBF_TEXT(setup, 2, "setupcrd");
1102         QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
1103
1104         card->read.state  = CH_STATE_DOWN;
1105         card->write.state = CH_STATE_DOWN;
1106         card->data.state  = CH_STATE_DOWN;
1107         card->state = CARD_STATE_DOWN;
1108         card->lan_online = 0;
1109         card->use_hard_stop = 0;
1110         card->dev = NULL;
1111         spin_lock_init(&card->vlanlock);
1112         spin_lock_init(&card->mclock);
1113         card->vlangrp = NULL;
1114         spin_lock_init(&card->lock);
1115         spin_lock_init(&card->ip_lock);
1116         spin_lock_init(&card->thread_mask_lock);
1117         card->thread_start_mask = 0;
1118         card->thread_allowed_mask = 0;
1119         card->thread_running_mask = 0;
1120         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1121         INIT_LIST_HEAD(&card->ip_list);
1122         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1123         if (!card->ip_tbd_list) {
1124                 QETH_DBF_TEXT(setup, 0, "iptbdnom");
1125                 return -ENOMEM;
1126         }
1127         INIT_LIST_HEAD(card->ip_tbd_list);
1128         INIT_LIST_HEAD(&card->cmd_waiter_list);
1129         init_waitqueue_head(&card->wait_q);
1130         /* intial options */
1131         qeth_set_intial_options(card);
1132         /* IP address takeover */
1133         INIT_LIST_HEAD(&card->ipato.entries);
1134         card->ipato.enabled = 0;
1135         card->ipato.invert4 = 0;
1136         card->ipato.invert6 = 0;
1137         /* init QDIO stuff */
1138         qeth_init_qdio_info(card);
1139         return 0;
1140 }
1141
1142 static struct qeth_card *qeth_alloc_card(void)
1143 {
1144         struct qeth_card *card;
1145
1146         QETH_DBF_TEXT(setup, 2, "alloccrd");
1147         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1148         if (!card)
1149                 return NULL;
1150         QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
1151         if (qeth_setup_channel(&card->read)) {
1152                 kfree(card);
1153                 return NULL;
1154         }
1155         if (qeth_setup_channel(&card->write)) {
1156                 qeth_clean_channel(&card->read);
1157                 kfree(card);
1158                 return NULL;
1159         }
1160         card->options.layer2 = -1;
1161         return card;
1162 }
1163
1164 static int qeth_determine_card_type(struct qeth_card *card)
1165 {
1166         int i = 0;
1167
1168         QETH_DBF_TEXT(setup, 2, "detcdtyp");
1169
1170         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1171         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1172         while (known_devices[i][4]) {
1173                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1174                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1175                         card->info.type = known_devices[i][4];
1176                         card->qdio.no_out_queues = known_devices[i][8];
1177                         card->info.is_multicast_different = known_devices[i][9];
1178                         if (qeth_is_1920_device(card)) {
1179                                 PRINT_INFO("Priority Queueing not able "
1180                                            "due to hardware limitations!\n");
1181                                 card->qdio.no_out_queues = 1;
1182                                 card->qdio.default_out_queue = 0;
1183                         }
1184                         return 0;
1185                 }
1186                 i++;
1187         }
1188         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1189         PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
1190         return -ENOENT;
1191 }
1192
1193 static int qeth_clear_channel(struct qeth_channel *channel)
1194 {
1195         unsigned long flags;
1196         struct qeth_card *card;
1197         int rc;
1198
1199         QETH_DBF_TEXT(trace, 3, "clearch");
1200         card = CARD_FROM_CDEV(channel->ccwdev);
1201         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1202         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1203         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1204
1205         if (rc)
1206                 return rc;
1207         rc = wait_event_interruptible_timeout(card->wait_q,
1208                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1209         if (rc == -ERESTARTSYS)
1210                 return rc;
1211         if (channel->state != CH_STATE_STOPPED)
1212                 return -ETIME;
1213         channel->state = CH_STATE_DOWN;
1214         return 0;
1215 }
1216
1217 static int qeth_halt_channel(struct qeth_channel *channel)
1218 {
1219         unsigned long flags;
1220         struct qeth_card *card;
1221         int rc;
1222
1223         QETH_DBF_TEXT(trace, 3, "haltch");
1224         card = CARD_FROM_CDEV(channel->ccwdev);
1225         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1226         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1227         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1228
1229         if (rc)
1230                 return rc;
1231         rc = wait_event_interruptible_timeout(card->wait_q,
1232                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1233         if (rc == -ERESTARTSYS)
1234                 return rc;
1235         if (channel->state != CH_STATE_HALTED)
1236                 return -ETIME;
1237         return 0;
1238 }
1239
1240 static int qeth_halt_channels(struct qeth_card *card)
1241 {
1242         int rc1 = 0, rc2 = 0, rc3 = 0;
1243
1244         QETH_DBF_TEXT(trace, 3, "haltchs");
1245         rc1 = qeth_halt_channel(&card->read);
1246         rc2 = qeth_halt_channel(&card->write);
1247         rc3 = qeth_halt_channel(&card->data);
1248         if (rc1)
1249                 return rc1;
1250         if (rc2)
1251                 return rc2;
1252         return rc3;
1253 }
1254
1255 static int qeth_clear_channels(struct qeth_card *card)
1256 {
1257         int rc1 = 0, rc2 = 0, rc3 = 0;
1258
1259         QETH_DBF_TEXT(trace, 3, "clearchs");
1260         rc1 = qeth_clear_channel(&card->read);
1261         rc2 = qeth_clear_channel(&card->write);
1262         rc3 = qeth_clear_channel(&card->data);
1263         if (rc1)
1264                 return rc1;
1265         if (rc2)
1266                 return rc2;
1267         return rc3;
1268 }
1269
1270 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1271 {
1272         int rc = 0;
1273
1274         QETH_DBF_TEXT(trace, 3, "clhacrd");
1275         QETH_DBF_HEX(trace, 3, &card, sizeof(void *));
1276
1277         if (halt)
1278                 rc = qeth_halt_channels(card);
1279         if (rc)
1280                 return rc;
1281         return qeth_clear_channels(card);
1282 }
1283
1284 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1285 {
1286         int rc = 0;
1287
1288         QETH_DBF_TEXT(trace, 3, "qdioclr");
1289         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1290                 QETH_QDIO_CLEANING)) {
1291         case QETH_QDIO_ESTABLISHED:
1292                 if (card->info.type == QETH_CARD_TYPE_IQD)
1293                         rc = qdio_cleanup(CARD_DDEV(card),
1294                                 QDIO_FLAG_CLEANUP_USING_HALT);
1295                 else
1296                         rc = qdio_cleanup(CARD_DDEV(card),
1297                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1298                 if (rc)
1299                         QETH_DBF_TEXT_(trace, 3, "1err%d", rc);
1300                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1301                 break;
1302         case QETH_QDIO_CLEANING:
1303                 return rc;
1304         default:
1305                 break;
1306         }
1307         rc = qeth_clear_halt_card(card, use_halt);
1308         if (rc)
1309                 QETH_DBF_TEXT_(trace, 3, "2err%d", rc);
1310         card->state = CARD_STATE_DOWN;
1311         return rc;
1312 }
1313 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1314
1315 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1316                                int *length)
1317 {
1318         struct ciw *ciw;
1319         char *rcd_buf;
1320         int ret;
1321         struct qeth_channel *channel = &card->data;
1322         unsigned long flags;
1323
1324         /*
1325          * scan for RCD command in extended SenseID data
1326          */
1327         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1328         if (!ciw || ciw->cmd == 0)
1329                 return -EOPNOTSUPP;
1330         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1331         if (!rcd_buf)
1332                 return -ENOMEM;
1333
1334         channel->ccw.cmd_code = ciw->cmd;
1335         channel->ccw.cda = (__u32) __pa(rcd_buf);
1336         channel->ccw.count = ciw->count;
1337         channel->ccw.flags = CCW_FLAG_SLI;
1338         channel->state = CH_STATE_RCD;
1339         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1340         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1341                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1342                                        QETH_RCD_TIMEOUT);
1343         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1344         if (!ret)
1345                 wait_event(card->wait_q,
1346                            (channel->state == CH_STATE_RCD_DONE ||
1347                             channel->state == CH_STATE_DOWN));
1348         if (channel->state == CH_STATE_DOWN)
1349                 ret = -EIO;
1350         else
1351                 channel->state = CH_STATE_DOWN;
1352         if (ret) {
1353                 kfree(rcd_buf);
1354                 *buffer = NULL;
1355                 *length = 0;
1356         } else {
1357                 *length = ciw->count;
1358                 *buffer = rcd_buf;
1359         }
1360         return ret;
1361 }
1362
1363 static int qeth_get_unitaddr(struct qeth_card *card)
1364 {
1365         int length;
1366         char *prcd;
1367         int rc;
1368
1369         QETH_DBF_TEXT(setup, 2, "getunit");
1370         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1371         if (rc) {
1372                 PRINT_ERR("qeth_read_conf_data for device %s returned %i\n",
1373                         CARD_DDEV_ID(card), rc);
1374                 return rc;
1375         }
1376         card->info.chpid = prcd[30];
1377         card->info.unit_addr2 = prcd[31];
1378         card->info.cula = prcd[63];
1379         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1380                                (prcd[0x11] == _ascebc['M']));
1381         kfree(prcd);
1382         return 0;
1383 }
1384
1385 static void qeth_init_tokens(struct qeth_card *card)
1386 {
1387         card->token.issuer_rm_w = 0x00010103UL;
1388         card->token.cm_filter_w = 0x00010108UL;
1389         card->token.cm_connection_w = 0x0001010aUL;
1390         card->token.ulp_filter_w = 0x0001010bUL;
1391         card->token.ulp_connection_w = 0x0001010dUL;
1392 }
1393
1394 static void qeth_init_func_level(struct qeth_card *card)
1395 {
1396         if (card->ipato.enabled) {
1397                 if (card->info.type == QETH_CARD_TYPE_IQD)
1398                                 card->info.func_level =
1399                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1400                 else
1401                                 card->info.func_level =
1402                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1403         } else {
1404                 if (card->info.type == QETH_CARD_TYPE_IQD)
1405                 /*FIXME:why do we have same values for  dis and ena for
1406                   osae??? */
1407                         card->info.func_level =
1408                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1409                 else
1410                         card->info.func_level =
1411                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1412         }
1413 }
1414
1415 static inline __u16 qeth_raw_devno_from_bus_id(char *id)
1416 {
1417         id += (strlen(id) - 4);
1418         return (__u16) simple_strtoul(id, &id, 16);
1419 }
1420
1421 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1422                 void (*idx_reply_cb)(struct qeth_channel *,
1423                         struct qeth_cmd_buffer *))
1424 {
1425         struct qeth_cmd_buffer *iob;
1426         unsigned long flags;
1427         int rc;
1428         struct qeth_card *card;
1429
1430         QETH_DBF_TEXT(setup, 2, "idxanswr");
1431         card = CARD_FROM_CDEV(channel->ccwdev);
1432         iob = qeth_get_buffer(channel);
1433         iob->callback = idx_reply_cb;
1434         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1435         channel->ccw.count = QETH_BUFSIZE;
1436         channel->ccw.cda = (__u32) __pa(iob->data);
1437
1438         wait_event(card->wait_q,
1439                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1440         QETH_DBF_TEXT(setup, 6, "noirqpnd");
1441         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1442         rc = ccw_device_start(channel->ccwdev,
1443                               &channel->ccw, (addr_t) iob, 0, 0);
1444         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1445
1446         if (rc) {
1447                 PRINT_ERR("Error2 in activating channel rc=%d\n", rc);
1448                 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
1449                 atomic_set(&channel->irq_pending, 0);
1450                 wake_up(&card->wait_q);
1451                 return rc;
1452         }
1453         rc = wait_event_interruptible_timeout(card->wait_q,
1454                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1455         if (rc == -ERESTARTSYS)
1456                 return rc;
1457         if (channel->state != CH_STATE_UP) {
1458                 rc = -ETIME;
1459                 QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
1460                 qeth_clear_cmd_buffers(channel);
1461         } else
1462                 rc = 0;
1463         return rc;
1464 }
1465
1466 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1467                 void (*idx_reply_cb)(struct qeth_channel *,
1468                         struct qeth_cmd_buffer *))
1469 {
1470         struct qeth_card *card;
1471         struct qeth_cmd_buffer *iob;
1472         unsigned long flags;
1473         __u16 temp;
1474         __u8 tmp;
1475         int rc;
1476
1477         card = CARD_FROM_CDEV(channel->ccwdev);
1478
1479         QETH_DBF_TEXT(setup, 2, "idxactch");
1480
1481         iob = qeth_get_buffer(channel);
1482         iob->callback = idx_reply_cb;
1483         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1484         channel->ccw.count = IDX_ACTIVATE_SIZE;
1485         channel->ccw.cda = (__u32) __pa(iob->data);
1486         if (channel == &card->write) {
1487                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1488                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1489                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1490                 card->seqno.trans_hdr++;
1491         } else {
1492                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1493                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1494                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1495         }
1496         tmp = ((__u8)card->info.portno) | 0x80;
1497         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1498         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1499                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1500         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1501                &card->info.func_level, sizeof(__u16));
1502         temp = qeth_raw_devno_from_bus_id(CARD_DDEV_ID(card));
1503         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2);
1504         temp = (card->info.cula << 8) + card->info.unit_addr2;
1505         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1506
1507         wait_event(card->wait_q,
1508                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1509         QETH_DBF_TEXT(setup, 6, "noirqpnd");
1510         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1511         rc = ccw_device_start(channel->ccwdev,
1512                               &channel->ccw, (addr_t) iob, 0, 0);
1513         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1514
1515         if (rc) {
1516                 PRINT_ERR("Error1 in activating channel. rc=%d\n", rc);
1517                 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
1518                 atomic_set(&channel->irq_pending, 0);
1519                 wake_up(&card->wait_q);
1520                 return rc;
1521         }
1522         rc = wait_event_interruptible_timeout(card->wait_q,
1523                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1524         if (rc == -ERESTARTSYS)
1525                 return rc;
1526         if (channel->state != CH_STATE_ACTIVATING) {
1527                 PRINT_WARN("IDX activate timed out!\n");
1528                 QETH_DBF_TEXT_(setup, 2, "2err%d", -ETIME);
1529                 qeth_clear_cmd_buffers(channel);
1530                 return -ETIME;
1531         }
1532         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1533 }
1534
1535 static int qeth_peer_func_level(int level)
1536 {
1537         if ((level & 0xff) == 8)
1538                 return (level & 0xff) + 0x400;
1539         if (((level >> 8) & 3) == 1)
1540                 return (level & 0xff) + 0x200;
1541         return level;
1542 }
1543
1544 static void qeth_idx_write_cb(struct qeth_channel *channel,
1545                 struct qeth_cmd_buffer *iob)
1546 {
1547         struct qeth_card *card;
1548         __u16 temp;
1549
1550         QETH_DBF_TEXT(setup , 2, "idxwrcb");
1551
1552         if (channel->state == CH_STATE_DOWN) {
1553                 channel->state = CH_STATE_ACTIVATING;
1554                 goto out;
1555         }
1556         card = CARD_FROM_CDEV(channel->ccwdev);
1557
1558         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1559                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1560                         PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
1561                                 "adapter exclusively used by another host\n",
1562                         CARD_WDEV_ID(card));
1563                 else
1564                         PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
1565                                 "negative reply\n", CARD_WDEV_ID(card));
1566                 goto out;
1567         }
1568         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1569         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1570                 PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
1571                            "function level mismatch "
1572                            "(sent: 0x%x, received: 0x%x)\n",
1573                            CARD_WDEV_ID(card), card->info.func_level, temp);
1574                 goto out;
1575         }
1576         channel->state = CH_STATE_UP;
1577 out:
1578         qeth_release_buffer(channel, iob);
1579 }
1580
1581 static void qeth_idx_read_cb(struct qeth_channel *channel,
1582                 struct qeth_cmd_buffer *iob)
1583 {
1584         struct qeth_card *card;
1585         __u16 temp;
1586
1587         QETH_DBF_TEXT(setup , 2, "idxrdcb");
1588         if (channel->state == CH_STATE_DOWN) {
1589                 channel->state = CH_STATE_ACTIVATING;
1590                 goto out;
1591         }
1592
1593         card = CARD_FROM_CDEV(channel->ccwdev);
1594         if (qeth_check_idx_response(iob->data))
1595                         goto out;
1596
1597         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1598                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1599                         PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
1600                                 "adapter exclusively used by another host\n",
1601                                 CARD_RDEV_ID(card));
1602                 else
1603                         PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
1604                                 "negative reply\n", CARD_RDEV_ID(card));
1605                 goto out;
1606         }
1607
1608 /**
1609  * temporary fix for microcode bug
1610  * to revert it,replace OR by AND
1611  */
1612         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1613              (card->info.type == QETH_CARD_TYPE_OSAE))
1614                 card->info.portname_required = 1;
1615
1616         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1617         if (temp != qeth_peer_func_level(card->info.func_level)) {
1618                 PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
1619                            "level mismatch (sent: 0x%x, received: 0x%x)\n",
1620                            CARD_RDEV_ID(card), card->info.func_level, temp);
1621                 goto out;
1622         }
1623         memcpy(&card->token.issuer_rm_r,
1624                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1625                QETH_MPC_TOKEN_LENGTH);
1626         memcpy(&card->info.mcl_level[0],
1627                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1628         channel->state = CH_STATE_UP;
1629 out:
1630         qeth_release_buffer(channel, iob);
1631 }
1632
1633 void qeth_prepare_control_data(struct qeth_card *card, int len,
1634                 struct qeth_cmd_buffer *iob)
1635 {
1636         qeth_setup_ccw(&card->write, iob->data, len);
1637         iob->callback = qeth_release_buffer;
1638
1639         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1640                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1641         card->seqno.trans_hdr++;
1642         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1643                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1644         card->seqno.pdu_hdr++;
1645         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1646                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1647         QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);
1648 }
1649 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1650
1651 int qeth_send_control_data(struct qeth_card *card, int len,
1652                 struct qeth_cmd_buffer *iob,
1653                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1654                         unsigned long),
1655                 void *reply_param)
1656 {
1657         int rc;
1658         unsigned long flags;
1659         struct qeth_reply *reply = NULL;
1660         unsigned long timeout;
1661
1662         QETH_DBF_TEXT(trace, 2, "sendctl");
1663
1664         reply = qeth_alloc_reply(card);
1665         if (!reply) {
1666                 PRINT_WARN("Could no alloc qeth_reply!\n");
1667                 return -ENOMEM;
1668         }
1669         reply->callback = reply_cb;
1670         reply->param = reply_param;
1671         if (card->state == CARD_STATE_DOWN)
1672                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1673         else
1674                 reply->seqno = card->seqno.ipa++;
1675         init_waitqueue_head(&reply->wait_q);
1676         spin_lock_irqsave(&card->lock, flags);
1677         list_add_tail(&reply->list, &card->cmd_waiter_list);
1678         spin_unlock_irqrestore(&card->lock, flags);
1679         QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);
1680
1681         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1682         qeth_prepare_control_data(card, len, iob);
1683
1684         if (IS_IPA(iob->data))
1685                 timeout = jiffies + QETH_IPA_TIMEOUT;
1686         else
1687                 timeout = jiffies + QETH_TIMEOUT;
1688
1689         QETH_DBF_TEXT(trace, 6, "noirqpnd");
1690         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1691         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1692                               (addr_t) iob, 0, 0);
1693         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1694         if (rc) {
1695                 PRINT_WARN("qeth_send_control_data: "
1696                            "ccw_device_start rc = %i\n", rc);
1697                 QETH_DBF_TEXT_(trace, 2, " err%d", rc);
1698                 spin_lock_irqsave(&card->lock, flags);
1699                 list_del_init(&reply->list);
1700                 qeth_put_reply(reply);
1701                 spin_unlock_irqrestore(&card->lock, flags);
1702                 qeth_release_buffer(iob->channel, iob);
1703                 atomic_set(&card->write.irq_pending, 0);
1704                 wake_up(&card->wait_q);
1705                 return rc;
1706         }
1707         while (!atomic_read(&reply->received)) {
1708                 if (time_after(jiffies, timeout)) {
1709                         spin_lock_irqsave(&reply->card->lock, flags);
1710                         list_del_init(&reply->list);
1711                         spin_unlock_irqrestore(&reply->card->lock, flags);
1712                         reply->rc = -ETIME;
1713                         atomic_inc(&reply->received);
1714                         wake_up(&reply->wait_q);
1715                 }
1716                 cpu_relax();
1717         };
1718         rc = reply->rc;
1719         qeth_put_reply(reply);
1720         return rc;
1721 }
1722 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1723
1724 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1725                 unsigned long data)
1726 {
1727         struct qeth_cmd_buffer *iob;
1728
1729         QETH_DBF_TEXT(setup, 2, "cmenblcb");
1730
1731         iob = (struct qeth_cmd_buffer *) data;
1732         memcpy(&card->token.cm_filter_r,
1733                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1734                QETH_MPC_TOKEN_LENGTH);
1735         QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
1736         return 0;
1737 }
1738
1739 static int qeth_cm_enable(struct qeth_card *card)
1740 {
1741         int rc;
1742         struct qeth_cmd_buffer *iob;
1743
1744         QETH_DBF_TEXT(setup, 2, "cmenable");
1745
1746         iob = qeth_wait_for_buffer(&card->write);
1747         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1748         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1749                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1750         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1751                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1752
1753         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1754                                     qeth_cm_enable_cb, NULL);
1755         return rc;
1756 }
1757
1758 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1759                 unsigned long data)
1760 {
1761
1762         struct qeth_cmd_buffer *iob;
1763
1764         QETH_DBF_TEXT(setup, 2, "cmsetpcb");
1765
1766         iob = (struct qeth_cmd_buffer *) data;
1767         memcpy(&card->token.cm_connection_r,
1768                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1769                QETH_MPC_TOKEN_LENGTH);
1770         QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
1771         return 0;
1772 }
1773
1774 static int qeth_cm_setup(struct qeth_card *card)
1775 {
1776         int rc;
1777         struct qeth_cmd_buffer *iob;
1778
1779         QETH_DBF_TEXT(setup, 2, "cmsetup");
1780
1781         iob = qeth_wait_for_buffer(&card->write);
1782         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1783         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1784                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1785         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1786                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1787         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1788                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1789         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1790                                     qeth_cm_setup_cb, NULL);
1791         return rc;
1792
1793 }
1794
1795 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1796 {
1797         switch (card->info.type) {
1798         case QETH_CARD_TYPE_UNKNOWN:
1799                 return 1500;
1800         case QETH_CARD_TYPE_IQD:
1801                 return card->info.max_mtu;
1802         case QETH_CARD_TYPE_OSAE:
1803                 switch (card->info.link_type) {
1804                 case QETH_LINK_TYPE_HSTR:
1805                 case QETH_LINK_TYPE_LANE_TR:
1806                         return 2000;
1807                 default:
1808                         return 1492;
1809                 }
1810         default:
1811                 return 1500;
1812         }
1813 }
1814
1815 static inline int qeth_get_max_mtu_for_card(int cardtype)
1816 {
1817         switch (cardtype) {
1818
1819         case QETH_CARD_TYPE_UNKNOWN:
1820         case QETH_CARD_TYPE_OSAE:
1821         case QETH_CARD_TYPE_OSN:
1822                 return 61440;
1823         case QETH_CARD_TYPE_IQD:
1824                 return 57344;
1825         default:
1826                 return 1500;
1827         }
1828 }
1829
1830 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1831 {
1832         switch (cardtype) {
1833         case QETH_CARD_TYPE_IQD:
1834                 return 1;
1835         default:
1836                 return 0;
1837         }
1838 }
1839
1840 static inline int qeth_get_mtu_outof_framesize(int framesize)
1841 {
1842         switch (framesize) {
1843         case 0x4000:
1844                 return 8192;
1845         case 0x6000:
1846                 return 16384;
1847         case 0xa000:
1848                 return 32768;
1849         case 0xffff:
1850                 return 57344;
1851         default:
1852                 return 0;
1853         }
1854 }
1855
1856 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1857 {
1858         switch (card->info.type) {
1859         case QETH_CARD_TYPE_OSAE:
1860                 return ((mtu >= 576) && (mtu <= 61440));
1861         case QETH_CARD_TYPE_IQD:
1862                 return ((mtu >= 576) &&
1863                         (mtu <= card->info.max_mtu + 4096 - 32));
1864         case QETH_CARD_TYPE_OSN:
1865         case QETH_CARD_TYPE_UNKNOWN:
1866         default:
1867                 return 1;
1868         }
1869 }
1870
1871 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1872                 unsigned long data)
1873 {
1874
1875         __u16 mtu, framesize;
1876         __u16 len;
1877         __u8 link_type;
1878         struct qeth_cmd_buffer *iob;
1879
1880         QETH_DBF_TEXT(setup, 2, "ulpenacb");
1881
1882         iob = (struct qeth_cmd_buffer *) data;
1883         memcpy(&card->token.ulp_filter_r,
1884                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1885                QETH_MPC_TOKEN_LENGTH);
1886         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1887                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1888                 mtu = qeth_get_mtu_outof_framesize(framesize);
1889                 if (!mtu) {
1890                         iob->rc = -EINVAL;
1891                         QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
1892                         return 0;
1893                 }
1894                 card->info.max_mtu = mtu;
1895                 card->info.initial_mtu = mtu;
1896                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1897         } else {
1898                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1899                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1900                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1901         }
1902
1903         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1904         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1905                 memcpy(&link_type,
1906                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1907                 card->info.link_type = link_type;
1908         } else
1909                 card->info.link_type = 0;
1910         QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
1911         return 0;
1912 }
1913
1914 static int qeth_ulp_enable(struct qeth_card *card)
1915 {
1916         int rc;
1917         char prot_type;
1918         struct qeth_cmd_buffer *iob;
1919
1920         /*FIXME: trace view callbacks*/
1921         QETH_DBF_TEXT(setup, 2, "ulpenabl");
1922
1923         iob = qeth_wait_for_buffer(&card->write);
1924         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1925
1926         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1927                 (__u8) card->info.portno;
1928         if (card->options.layer2)
1929                 if (card->info.type == QETH_CARD_TYPE_OSN)
1930                         prot_type = QETH_PROT_OSN2;
1931                 else
1932                         prot_type = QETH_PROT_LAYER2;
1933         else
1934                 prot_type = QETH_PROT_TCPIP;
1935
1936         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1937         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1938                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1939         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1940                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1941         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1942                card->info.portname, 9);
1943         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1944                                     qeth_ulp_enable_cb, NULL);
1945         return rc;
1946
1947 }
1948
1949 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1950                 unsigned long data)
1951 {
1952         struct qeth_cmd_buffer *iob;
1953
1954         QETH_DBF_TEXT(setup, 2, "ulpstpcb");
1955
1956         iob = (struct qeth_cmd_buffer *) data;
1957         memcpy(&card->token.ulp_connection_r,
1958                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1959                QETH_MPC_TOKEN_LENGTH);
1960         QETH_DBF_TEXT_(setup, 2, "  rc%d", iob->rc);
1961         return 0;
1962 }
1963
1964 static int qeth_ulp_setup(struct qeth_card *card)
1965 {
1966         int rc;
1967         __u16 temp;
1968         struct qeth_cmd_buffer *iob;
1969         struct ccw_dev_id dev_id;
1970
1971         QETH_DBF_TEXT(setup, 2, "ulpsetup");
1972
1973         iob = qeth_wait_for_buffer(&card->write);
1974         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
1975
1976         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
1977                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1978         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
1979                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
1980         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
1981                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
1982
1983         ccw_device_get_id(CARD_DDEV(card), &dev_id);
1984         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
1985         temp = (card->info.cula << 8) + card->info.unit_addr2;
1986         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
1987         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
1988                                     qeth_ulp_setup_cb, NULL);
1989         return rc;
1990 }
1991
1992 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
1993 {
1994         int i, j;
1995
1996         QETH_DBF_TEXT(setup, 2, "allcqdbf");
1997
1998         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
1999                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2000                 return 0;
2001
2002         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2003                                   GFP_KERNEL|GFP_DMA);
2004         if (!card->qdio.in_q)
2005                 goto out_nomem;
2006         QETH_DBF_TEXT(setup, 2, "inq");
2007         QETH_DBF_HEX(setup, 2, &card->qdio.in_q, sizeof(void *));
2008         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2009         /* give inbound qeth_qdio_buffers their qdio_buffers */
2010         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2011                 card->qdio.in_q->bufs[i].buffer =
2012                         &card->qdio.in_q->qdio_bufs[i];
2013         /* inbound buffer pool */
2014         if (qeth_alloc_buffer_pool(card))
2015                 goto out_freeinq;
2016         /* outbound */
2017         card->qdio.out_qs =
2018                 kmalloc(card->qdio.no_out_queues *
2019                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2020         if (!card->qdio.out_qs)
2021                 goto out_freepool;
2022         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2023                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2024                                                GFP_KERNEL|GFP_DMA);
2025                 if (!card->qdio.out_qs[i])
2026                         goto out_freeoutq;
2027                 QETH_DBF_TEXT_(setup, 2, "outq %i", i);
2028                 QETH_DBF_HEX(setup, 2, &card->qdio.out_qs[i], sizeof(void *));
2029                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2030                 card->qdio.out_qs[i]->queue_no = i;
2031                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2032                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2033                         card->qdio.out_qs[i]->bufs[j].buffer =
2034                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2035                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2036                                             skb_list);
2037                         lockdep_set_class(
2038                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2039                                 &qdio_out_skb_queue_key);
2040                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2041                 }
2042         }
2043         return 0;
2044
2045 out_freeoutq:
2046         while (i > 0)
2047                 kfree(card->qdio.out_qs[--i]);
2048         kfree(card->qdio.out_qs);
2049         card->qdio.out_qs = NULL;
2050 out_freepool:
2051         qeth_free_buffer_pool(card);
2052 out_freeinq:
2053         kfree(card->qdio.in_q);
2054         card->qdio.in_q = NULL;
2055 out_nomem:
2056         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2057         return -ENOMEM;
2058 }
2059
2060 static void qeth_create_qib_param_field(struct qeth_card *card,
2061                 char *param_field)
2062 {
2063
2064         param_field[0] = _ascebc['P'];
2065         param_field[1] = _ascebc['C'];
2066         param_field[2] = _ascebc['I'];
2067         param_field[3] = _ascebc['T'];
2068         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2069         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2070         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2071 }
2072
2073 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2074                 char *param_field)
2075 {
2076         param_field[16] = _ascebc['B'];
2077         param_field[17] = _ascebc['L'];
2078         param_field[18] = _ascebc['K'];
2079         param_field[19] = _ascebc['T'];
2080         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2081         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2082         *((unsigned int *) (&param_field[28])) =
2083                 card->info.blkt.inter_packet_jumbo;
2084 }
2085
2086 static int qeth_qdio_activate(struct qeth_card *card)
2087 {
2088         QETH_DBF_TEXT(setup, 3, "qdioact");
2089         return qdio_activate(CARD_DDEV(card), 0);
2090 }
2091
2092 static int qeth_dm_act(struct qeth_card *card)
2093 {
2094         int rc;
2095         struct qeth_cmd_buffer *iob;
2096
2097         QETH_DBF_TEXT(setup, 2, "dmact");
2098
2099         iob = qeth_wait_for_buffer(&card->write);
2100         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2101
2102         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2103                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2104         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2105                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2106         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2107         return rc;
2108 }
2109
2110 static int qeth_mpc_initialize(struct qeth_card *card)
2111 {
2112         int rc;
2113
2114         QETH_DBF_TEXT(setup, 2, "mpcinit");
2115
2116         rc = qeth_issue_next_read(card);
2117         if (rc) {
2118                 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
2119                 return rc;
2120         }
2121         rc = qeth_cm_enable(card);
2122         if (rc) {
2123                 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
2124                 goto out_qdio;
2125         }
2126         rc = qeth_cm_setup(card);
2127         if (rc) {
2128                 QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
2129                 goto out_qdio;
2130         }
2131         rc = qeth_ulp_enable(card);
2132         if (rc) {
2133                 QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
2134                 goto out_qdio;
2135         }
2136         rc = qeth_ulp_setup(card);
2137         if (rc) {
2138                 QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
2139                 goto out_qdio;
2140         }
2141         rc = qeth_alloc_qdio_buffers(card);
2142         if (rc) {
2143                 QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
2144                 goto out_qdio;
2145         }
2146         rc = qeth_qdio_establish(card);
2147         if (rc) {
2148                 QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
2149                 qeth_free_qdio_buffers(card);
2150                 goto out_qdio;
2151         }
2152         rc = qeth_qdio_activate(card);
2153         if (rc) {
2154                 QETH_DBF_TEXT_(setup, 2, "7err%d", rc);
2155                 goto out_qdio;
2156         }
2157         rc = qeth_dm_act(card);
2158         if (rc) {
2159                 QETH_DBF_TEXT_(setup, 2, "8err%d", rc);
2160                 goto out_qdio;
2161         }
2162
2163         return 0;
2164 out_qdio:
2165         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2166         return rc;
2167 }
2168
2169 static void qeth_print_status_with_portname(struct qeth_card *card)
2170 {
2171         char dbf_text[15];
2172         int i;
2173
2174         sprintf(dbf_text, "%s", card->info.portname + 1);
2175         for (i = 0; i < 8; i++)
2176                 dbf_text[i] =
2177                         (char) _ebcasc[(__u8) dbf_text[i]];
2178         dbf_text[8] = 0;
2179         PRINT_INFO("Device %s/%s/%s is a%s card%s%s%s\n"
2180                "with link type %s (portname: %s)\n",
2181                CARD_RDEV_ID(card),
2182                CARD_WDEV_ID(card),
2183                CARD_DDEV_ID(card),
2184                qeth_get_cardname(card),
2185                (card->info.mcl_level[0]) ? " (level: " : "",
2186                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2187                (card->info.mcl_level[0]) ? ")" : "",
2188                qeth_get_cardname_short(card),
2189                dbf_text);
2190
2191 }
2192
2193 static void qeth_print_status_no_portname(struct qeth_card *card)
2194 {
2195         if (card->info.portname[0])
2196                 PRINT_INFO("Device %s/%s/%s is a%s "
2197                        "card%s%s%s\nwith link type %s "
2198                        "(no portname needed by interface).\n",
2199                        CARD_RDEV_ID(card),
2200                        CARD_WDEV_ID(card),
2201                        CARD_DDEV_ID(card),
2202                        qeth_get_cardname(card),
2203                        (card->info.mcl_level[0]) ? " (level: " : "",
2204                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2205                        (card->info.mcl_level[0]) ? ")" : "",
2206                        qeth_get_cardname_short(card));
2207         else
2208                 PRINT_INFO("Device %s/%s/%s is a%s "
2209                        "card%s%s%s\nwith link type %s.\n",
2210                        CARD_RDEV_ID(card),
2211                        CARD_WDEV_ID(card),
2212                        CARD_DDEV_ID(card),
2213                        qeth_get_cardname(card),
2214                        (card->info.mcl_level[0]) ? " (level: " : "",
2215                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2216                        (card->info.mcl_level[0]) ? ")" : "",
2217                        qeth_get_cardname_short(card));
2218 }
2219
2220 void qeth_print_status_message(struct qeth_card *card)
2221 {
2222         switch (card->info.type) {
2223         case QETH_CARD_TYPE_OSAE:
2224                 /* VM will use a non-zero first character
2225                  * to indicate a HiperSockets like reporting
2226                  * of the level OSA sets the first character to zero
2227                  * */
2228                 if (!card->info.mcl_level[0]) {
2229                         sprintf(card->info.mcl_level, "%02x%02x",
2230                                 card->info.mcl_level[2],
2231                                 card->info.mcl_level[3]);
2232
2233                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2234                         break;
2235                 }
2236                 /* fallthrough */
2237         case QETH_CARD_TYPE_IQD:
2238                 if (card->info.guestlan) {
2239                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2240                                 card->info.mcl_level[0]];
2241                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2242                                 card->info.mcl_level[1]];
2243                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2244                                 card->info.mcl_level[2]];
2245                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2246                                 card->info.mcl_level[3]];
2247                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2248                 }
2249                 break;
2250         default:
2251                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2252         }
2253         if (card->info.portname_required)
2254                 qeth_print_status_with_portname(card);
2255         else
2256                 qeth_print_status_no_portname(card);
2257 }
2258 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2259
2260 void qeth_put_buffer_pool_entry(struct qeth_card *card,
2261                 struct qeth_buffer_pool_entry *entry)
2262 {
2263         QETH_DBF_TEXT(trace, 6, "ptbfplen");
2264         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
2265 }
2266 EXPORT_SYMBOL_GPL(qeth_put_buffer_pool_entry);
2267
2268 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2269 {
2270         struct qeth_buffer_pool_entry *entry;
2271
2272         QETH_DBF_TEXT(trace, 5, "inwrklst");
2273
2274         list_for_each_entry(entry,
2275                             &card->qdio.init_pool.entry_list, init_list) {
2276                 qeth_put_buffer_pool_entry(card, entry);
2277         }
2278 }
2279
2280 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2281                 struct qeth_card *card)
2282 {
2283         struct list_head *plh;
2284         struct qeth_buffer_pool_entry *entry;
2285         int i, free;
2286         struct page *page;
2287
2288         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2289                 return NULL;
2290
2291         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2292                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2293                 free = 1;
2294                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2295                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2296                                 free = 0;
2297                                 break;
2298                         }
2299                 }
2300                 if (free) {
2301                         list_del_init(&entry->list);
2302                         return entry;
2303                 }
2304         }
2305
2306         /* no free buffer in pool so take first one and swap pages */
2307         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2308                         struct qeth_buffer_pool_entry, list);
2309         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2310                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2311                         page = alloc_page(GFP_ATOMIC|GFP_DMA);
2312                         if (!page) {
2313                                 return NULL;
2314                         } else {
2315                                 free_page((unsigned long)entry->elements[i]);
2316                                 entry->elements[i] = page_address(page);
2317                                 if (card->options.performance_stats)
2318                                         card->perf_stats.sg_alloc_page_rx++;
2319                         }
2320                 }
2321         }
2322         list_del_init(&entry->list);
2323         return entry;
2324 }
2325
2326 static int qeth_init_input_buffer(struct qeth_card *card,
2327                 struct qeth_qdio_buffer *buf)
2328 {
2329         struct qeth_buffer_pool_entry *pool_entry;
2330         int i;
2331
2332         pool_entry = qeth_find_free_buffer_pool_entry(card);
2333         if (!pool_entry)
2334                 return 1;
2335
2336         /*
2337          * since the buffer is accessed only from the input_tasklet
2338          * there shouldn't be a need to synchronize; also, since we use
2339          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2340          * buffers
2341          */
2342         BUG_ON(!pool_entry);
2343
2344         buf->pool_entry = pool_entry;
2345         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2346                 buf->buffer->element[i].length = PAGE_SIZE;
2347                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2348                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2349                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2350                 else
2351                         buf->buffer->element[i].flags = 0;
2352         }
2353         return 0;
2354 }
2355
2356 int qeth_init_qdio_queues(struct qeth_card *card)
2357 {
2358         int i, j;
2359         int rc;
2360
2361         QETH_DBF_TEXT(setup, 2, "initqdqs");
2362
2363         /* inbound queue */
2364         memset(card->qdio.in_q->qdio_bufs, 0,
2365                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2366         qeth_initialize_working_pool_list(card);
2367         /*give only as many buffers to hardware as we have buffer pool entries*/
2368         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2369                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2370         card->qdio.in_q->next_buf_to_init =
2371                 card->qdio.in_buf_pool.buf_count - 1;
2372         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2373                      card->qdio.in_buf_pool.buf_count - 1, NULL);
2374         if (rc) {
2375                 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
2376                 return rc;
2377         }
2378         rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
2379         if (rc) {
2380                 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
2381                 return rc;
2382         }
2383         /* outbound queue */
2384         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2385                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2386                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2387                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2388                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2389                                         &card->qdio.out_qs[i]->bufs[j]);
2390                 }
2391                 card->qdio.out_qs[i]->card = card;
2392                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2393                 card->qdio.out_qs[i]->do_pack = 0;
2394                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2395                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2396                 atomic_set(&card->qdio.out_qs[i]->state,
2397                            QETH_OUT_Q_UNLOCKED);
2398         }
2399         return 0;
2400 }
2401 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2402
2403 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2404 {
2405         switch (link_type) {
2406         case QETH_LINK_TYPE_HSTR:
2407                 return 2;
2408         default:
2409                 return 1;
2410         }
2411 }
2412
2413 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2414                 struct qeth_ipa_cmd *cmd, __u8 command,
2415                 enum qeth_prot_versions prot)
2416 {
2417         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2418         cmd->hdr.command = command;
2419         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2420         cmd->hdr.seqno = card->seqno.ipa;
2421         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2422         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2423         if (card->options.layer2)
2424                 cmd->hdr.prim_version_no = 2;
2425         else
2426                 cmd->hdr.prim_version_no = 1;
2427         cmd->hdr.param_count = 1;
2428         cmd->hdr.prot_version = prot;
2429         cmd->hdr.ipa_supported = 0;
2430         cmd->hdr.ipa_enabled = 0;
2431 }
2432
2433 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2434                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2435 {
2436         struct qeth_cmd_buffer *iob;
2437         struct qeth_ipa_cmd *cmd;
2438
2439         iob = qeth_wait_for_buffer(&card->write);
2440         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2441         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2442
2443         return iob;
2444 }
2445 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2446
2447 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2448                 char prot_type)
2449 {
2450         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2451         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2452         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2453                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2454 }
2455 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2456
2457 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2458                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2459                         unsigned long),
2460                 void *reply_param)
2461 {
2462         int rc;
2463         char prot_type;
2464         int cmd;
2465         cmd = ((struct qeth_ipa_cmd *)
2466                 (iob->data+IPA_PDU_HEADER_SIZE))->hdr.command;
2467
2468         QETH_DBF_TEXT(trace, 4, "sendipa");
2469
2470         if (card->options.layer2)
2471                 if (card->info.type == QETH_CARD_TYPE_OSN)
2472                         prot_type = QETH_PROT_OSN2;
2473                 else
2474                         prot_type = QETH_PROT_LAYER2;
2475         else
2476                 prot_type = QETH_PROT_TCPIP;
2477         qeth_prepare_ipa_cmd(card, iob, prot_type);
2478         rc = qeth_send_control_data(card, IPA_CMD_LENGTH, iob,
2479                                     reply_cb, reply_param);
2480         if (rc != 0) {
2481                 char *ipa_cmd_name;
2482                 ipa_cmd_name = qeth_get_ipa_cmd_name(cmd);
2483                 PRINT_ERR("%s %s(%x) returned %s(%x)\n", __FUNCTION__,
2484                         ipa_cmd_name, cmd, qeth_get_ipa_msg(rc), rc);
2485         }
2486         return rc;
2487 }
2488 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2489
2490 static int qeth_send_startstoplan(struct qeth_card *card,
2491                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2492 {
2493         int rc;
2494         struct qeth_cmd_buffer *iob;
2495
2496         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2497         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2498
2499         return rc;
2500 }
2501
2502 int qeth_send_startlan(struct qeth_card *card)
2503 {
2504         int rc;
2505
2506         QETH_DBF_TEXT(setup, 2, "strtlan");
2507
2508         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2509         return rc;
2510 }
2511 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2512
2513 int qeth_send_stoplan(struct qeth_card *card)
2514 {
2515         int rc = 0;
2516
2517         /*
2518          * TODO: according to the IPA format document page 14,
2519          * TCP/IP (we!) never issue a STOPLAN
2520          * is this right ?!?
2521          */
2522         QETH_DBF_TEXT(setup, 2, "stoplan");
2523
2524         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2525         return rc;
2526 }
2527 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2528
2529 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2530                 struct qeth_reply *reply, unsigned long data)
2531 {
2532         struct qeth_ipa_cmd *cmd;
2533
2534         QETH_DBF_TEXT(trace, 4, "defadpcb");
2535
2536         cmd = (struct qeth_ipa_cmd *) data;
2537         if (cmd->hdr.return_code == 0)
2538                 cmd->hdr.return_code =
2539                         cmd->data.setadapterparms.hdr.return_code;
2540         return 0;
2541 }
2542 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2543
2544 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2545                 struct qeth_reply *reply, unsigned long data)
2546 {
2547         struct qeth_ipa_cmd *cmd;
2548
2549         QETH_DBF_TEXT(trace, 3, "quyadpcb");
2550
2551         cmd = (struct qeth_ipa_cmd *) data;
2552         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2553                 card->info.link_type =
2554                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2555         card->options.adp.supported_funcs =
2556                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2557         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2558 }
2559
2560 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2561                 __u32 command, __u32 cmdlen)
2562 {
2563         struct qeth_cmd_buffer *iob;
2564         struct qeth_ipa_cmd *cmd;
2565
2566         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2567                                      QETH_PROT_IPV4);
2568         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2569         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2570         cmd->data.setadapterparms.hdr.command_code = command;
2571         cmd->data.setadapterparms.hdr.used_total = 1;
2572         cmd->data.setadapterparms.hdr.seq_no = 1;
2573
2574         return iob;
2575 }
2576 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2577
2578 int qeth_query_setadapterparms(struct qeth_card *card)
2579 {
2580         int rc;
2581         struct qeth_cmd_buffer *iob;
2582
2583         QETH_DBF_TEXT(trace, 3, "queryadp");
2584         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2585                                    sizeof(struct qeth_ipacmd_setadpparms));
2586         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2587         return rc;
2588 }
2589 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2590
2591 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2592                 unsigned int siga_error, const char *dbftext)
2593 {
2594         if (qdio_error || siga_error) {
2595                 QETH_DBF_TEXT(trace, 2, dbftext);
2596                 QETH_DBF_TEXT(qerr, 2, dbftext);
2597                 QETH_DBF_TEXT_(qerr, 2, " F15=%02X",
2598                                buf->element[15].flags & 0xff);
2599                 QETH_DBF_TEXT_(qerr, 2, " F14=%02X",
2600                                buf->element[14].flags & 0xff);
2601                 QETH_DBF_TEXT_(qerr, 2, " qerr=%X", qdio_error);
2602                 QETH_DBF_TEXT_(qerr, 2, " serr=%X", siga_error);
2603                 return 1;
2604         }
2605         return 0;
2606 }
2607 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2608
2609 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2610 {
2611         struct qeth_qdio_q *queue = card->qdio.in_q;
2612         int count;
2613         int i;
2614         int rc;
2615         int newcount = 0;
2616
2617         QETH_DBF_TEXT(trace, 6, "queinbuf");
2618         count = (index < queue->next_buf_to_init)?
2619                 card->qdio.in_buf_pool.buf_count -
2620                 (queue->next_buf_to_init - index) :
2621                 card->qdio.in_buf_pool.buf_count -
2622                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2623         /* only requeue at a certain threshold to avoid SIGAs */
2624         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2625                 for (i = queue->next_buf_to_init;
2626                      i < queue->next_buf_to_init + count; ++i) {
2627                         if (qeth_init_input_buffer(card,
2628                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2629                                 break;
2630                         } else {
2631                                 newcount++;
2632                         }
2633                 }
2634
2635                 if (newcount < count) {
2636                         /* we are in memory shortage so we switch back to
2637                            traditional skb allocation and drop packages */
2638                         if (!atomic_read(&card->force_alloc_skb) &&
2639                             net_ratelimit())
2640                                 PRINT_WARN("Switch to alloc skb\n");
2641                         atomic_set(&card->force_alloc_skb, 3);
2642                         count = newcount;
2643                 } else {
2644                         if ((atomic_read(&card->force_alloc_skb) == 1) &&
2645                             net_ratelimit())
2646                                 PRINT_WARN("Switch to sg\n");
2647                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2648                 }
2649
2650                 /*
2651                  * according to old code it should be avoided to requeue all
2652                  * 128 buffers in order to benefit from PCI avoidance.
2653                  * this function keeps at least one buffer (the buffer at
2654                  * 'index') un-requeued -> this buffer is the first buffer that
2655                  * will be requeued the next time
2656                  */
2657                 if (card->options.performance_stats) {
2658                         card->perf_stats.inbound_do_qdio_cnt++;
2659                         card->perf_stats.inbound_do_qdio_start_time =
2660                                 qeth_get_micros();
2661                 }
2662                 rc = do_QDIO(CARD_DDEV(card),
2663                              QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
2664                              0, queue->next_buf_to_init, count, NULL);
2665                 if (card->options.performance_stats)
2666                         card->perf_stats.inbound_do_qdio_time +=
2667                                 qeth_get_micros() -
2668                                 card->perf_stats.inbound_do_qdio_start_time;
2669                 if (rc) {
2670                         PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
2671                                    "return %i (device %s).\n",
2672                                    rc, CARD_DDEV_ID(card));
2673                         QETH_DBF_TEXT(trace, 2, "qinberr");
2674                         QETH_DBF_TEXT_(trace, 2, "%s", CARD_BUS_ID(card));
2675                 }
2676                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2677                                           QDIO_MAX_BUFFERS_PER_Q;
2678         }
2679 }
2680 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2681
2682 static int qeth_handle_send_error(struct qeth_card *card,
2683                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err,
2684                 unsigned int siga_err)
2685 {
2686         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2687         int cc = siga_err & 3;
2688
2689         QETH_DBF_TEXT(trace, 6, "hdsnderr");
2690         qeth_check_qdio_errors(buffer->buffer, qdio_err, siga_err, "qouterr");
2691         switch (cc) {
2692         case 0:
2693                 if (qdio_err) {
2694                         QETH_DBF_TEXT(trace, 1, "lnkfail");
2695                         QETH_DBF_TEXT_(trace, 1, "%s", CARD_BUS_ID(card));
2696                         QETH_DBF_TEXT_(trace, 1, "%04x %02x",
2697                                        (u16)qdio_err, (u8)sbalf15);
2698                         return QETH_SEND_ERROR_LINK_FAILURE;
2699                 }
2700                 return QETH_SEND_ERROR_NONE;
2701         case 2:
2702                 if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
2703                         QETH_DBF_TEXT(trace, 1, "SIGAcc2B");
2704                         QETH_DBF_TEXT_(trace, 1, "%s", CARD_BUS_ID(card));
2705                         return QETH_SEND_ERROR_KICK_IT;
2706                 }
2707                 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2708                         return QETH_SEND_ERROR_RETRY;
2709                 return QETH_SEND_ERROR_LINK_FAILURE;
2710                 /* look at qdio_error and sbalf 15 */
2711         case 1:
2712                 QETH_DBF_TEXT(trace, 1, "SIGAcc1");
2713                 QETH_DBF_TEXT_(trace, 1, "%s", CARD_BUS_ID(card));
2714                 return QETH_SEND_ERROR_LINK_FAILURE;
2715         case 3:
2716         default:
2717                 QETH_DBF_TEXT(trace, 1, "SIGAcc3");
2718                 QETH_DBF_TEXT_(trace, 1, "%s", CARD_BUS_ID(card));
2719                 return QETH_SEND_ERROR_KICK_IT;
2720         }
2721 }
2722
2723 /*
2724  * Switched to packing state if the number of used buffers on a queue
2725  * reaches a certain limit.
2726  */
2727 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2728 {
2729         if (!queue->do_pack) {
2730                 if (atomic_read(&queue->used_buffers)
2731                     >= QETH_HIGH_WATERMARK_PACK){
2732                         /* switch non-PACKING -> PACKING */
2733                         QETH_DBF_TEXT(trace, 6, "np->pack");
2734                         if (queue->card->options.performance_stats)
2735                                 queue->card->perf_stats.sc_dp_p++;
2736                         queue->do_pack = 1;
2737                 }
2738         }
2739 }
2740
2741 /*
2742  * Switches from packing to non-packing mode. If there is a packing
2743  * buffer on the queue this buffer will be prepared to be flushed.
2744  * In that case 1 is returned to inform the caller. If no buffer
2745  * has to be flushed, zero is returned.
2746  */
2747 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2748 {
2749         struct qeth_qdio_out_buffer *buffer;
2750         int flush_count = 0;
2751
2752         if (queue->do_pack) {
2753                 if (atomic_read(&queue->used_buffers)
2754                     <= QETH_LOW_WATERMARK_PACK) {
2755                         /* switch PACKING -> non-PACKING */
2756                         QETH_DBF_TEXT(trace, 6, "pack->np");
2757                         if (queue->card->options.performance_stats)
2758                                 queue->card->perf_stats.sc_p_dp++;
2759                         queue->do_pack = 0;
2760                         /* flush packing buffers */
2761                         buffer = &queue->bufs[queue->next_buf_to_fill];
2762                         if ((atomic_read(&buffer->state) ==
2763                                                 QETH_QDIO_BUF_EMPTY) &&
2764                             (buffer->next_element_to_fill > 0)) {
2765                                 atomic_set(&buffer->state,
2766                                                 QETH_QDIO_BUF_PRIMED);
2767                                 flush_count++;
2768                                 queue->next_buf_to_fill =
2769                                         (queue->next_buf_to_fill + 1) %
2770                                         QDIO_MAX_BUFFERS_PER_Q;
2771                         }
2772                 }
2773         }
2774         return flush_count;
2775 }
2776
2777 /*
2778  * Called to flush a packing buffer if no more pci flags are on the queue.
2779  * Checks if there is a packing buffer and prepares it to be flushed.
2780  * In that case returns 1, otherwise zero.
2781  */
2782 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2783 {
2784         struct qeth_qdio_out_buffer *buffer;
2785
2786         buffer = &queue->bufs[queue->next_buf_to_fill];
2787         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2788            (buffer->next_element_to_fill > 0)) {
2789                 /* it's a packing buffer */
2790                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2791                 queue->next_buf_to_fill =
2792                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2793                 return 1;
2794         }
2795         return 0;
2796 }
2797
2798 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
2799                 int index, int count)
2800 {
2801         struct qeth_qdio_out_buffer *buf;
2802         int rc;
2803         int i;
2804         unsigned int qdio_flags;
2805
2806         QETH_DBF_TEXT(trace, 6, "flushbuf");
2807
2808         for (i = index; i < index + count; ++i) {
2809                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2810                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2811                                 SBAL_FLAGS_LAST_ENTRY;
2812
2813                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2814                         continue;
2815
2816                 if (!queue->do_pack) {
2817                         if ((atomic_read(&queue->used_buffers) >=
2818                                 (QETH_HIGH_WATERMARK_PACK -
2819                                  QETH_WATERMARK_PACK_FUZZ)) &&
2820                             !atomic_read(&queue->set_pci_flags_count)) {
2821                                 /* it's likely that we'll go to packing
2822                                  * mode soon */
2823                                 atomic_inc(&queue->set_pci_flags_count);
2824                                 buf->buffer->element[0].flags |= 0x40;
2825                         }
2826                 } else {
2827                         if (!atomic_read(&queue->set_pci_flags_count)) {
2828                                 /*
2829                                  * there's no outstanding PCI any more, so we
2830                                  * have to request a PCI to be sure the the PCI
2831                                  * will wake at some time in the future then we
2832                                  * can flush packed buffers that might still be
2833                                  * hanging around, which can happen if no
2834                                  * further send was requested by the stack
2835                                  */
2836                                 atomic_inc(&queue->set_pci_flags_count);
2837                                 buf->buffer->element[0].flags |= 0x40;
2838                         }
2839                 }
2840         }
2841
2842         queue->card->dev->trans_start = jiffies;
2843         if (queue->card->options.performance_stats) {
2844                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2845                 queue->card->perf_stats.outbound_do_qdio_start_time =
2846                         qeth_get_micros();
2847         }
2848         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2849         if (under_int)
2850                 qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;
2851         if (atomic_read(&queue->set_pci_flags_count))
2852                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2853         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2854                      queue->queue_no, index, count, NULL);
2855         if (queue->card->options.performance_stats)
2856                 queue->card->perf_stats.outbound_do_qdio_time +=
2857                         qeth_get_micros() -
2858                         queue->card->perf_stats.outbound_do_qdio_start_time;
2859         if (rc) {
2860                 QETH_DBF_TEXT(trace, 2, "flushbuf");
2861                 QETH_DBF_TEXT_(trace, 2, " err%d", rc);
2862                 QETH_DBF_TEXT_(trace, 2, "%s", CARD_DDEV_ID(queue->card));
2863                 queue->card->stats.tx_errors += count;
2864                 /* this must not happen under normal circumstances. if it
2865                  * happens something is really wrong -> recover */
2866                 qeth_schedule_recovery(queue->card);
2867                 return;
2868         }
2869         atomic_add(count, &queue->used_buffers);
2870         if (queue->card->options.performance_stats)
2871                 queue->card->perf_stats.bufs_sent += count;
2872 }
2873
2874 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2875 {
2876         int index;
2877         int flush_cnt = 0;
2878         int q_was_packing = 0;
2879
2880         /*
2881          * check if weed have to switch to non-packing mode or if
2882          * we have to get a pci flag out on the queue
2883          */
2884         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2885             !atomic_read(&queue->set_pci_flags_count)) {
2886                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2887                                 QETH_OUT_Q_UNLOCKED) {
2888                         /*
2889                          * If we get in here, there was no action in
2890                          * do_send_packet. So, we check if there is a
2891                          * packing buffer to be flushed here.
2892                          */
2893                         netif_stop_queue(queue->card->dev);
2894                         index = queue->next_buf_to_fill;
2895                         q_was_packing = queue->do_pack;
2896                         /* queue->do_pack may change */
2897                         barrier();
2898                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2899                         if (!flush_cnt &&
2900                             !atomic_read(&queue->set_pci_flags_count))
2901                                 flush_cnt +=
2902                                         qeth_flush_buffers_on_no_pci(queue);
2903                         if (queue->card->options.performance_stats &&
2904                             q_was_packing)
2905                                 queue->card->perf_stats.bufs_sent_pack +=
2906                                         flush_cnt;
2907                         if (flush_cnt)
2908                                 qeth_flush_buffers(queue, 1, index, flush_cnt);
2909                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2910                 }
2911         }
2912 }
2913
2914 void qeth_qdio_output_handler(struct ccw_device *ccwdev, unsigned int status,
2915                 unsigned int qdio_error, unsigned int siga_error,
2916                 unsigned int __queue, int first_element, int count,
2917                 unsigned long card_ptr)
2918 {
2919         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2920         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2921         struct qeth_qdio_out_buffer *buffer;
2922         int i;
2923
2924         QETH_DBF_TEXT(trace, 6, "qdouhdl");
2925         if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
2926                 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
2927                         QETH_DBF_TEXT(trace, 2, "achkcond");
2928                         QETH_DBF_TEXT_(trace, 2, "%s", CARD_BUS_ID(card));
2929                         QETH_DBF_TEXT_(trace, 2, "%08x", status);
2930                         netif_stop_queue(card->dev);
2931                         qeth_schedule_recovery(card);
2932                         return;
2933                 }
2934         }
2935         if (card->options.performance_stats) {
2936                 card->perf_stats.outbound_handler_cnt++;
2937                 card->perf_stats.outbound_handler_start_time =
2938                         qeth_get_micros();
2939         }
2940         for (i = first_element; i < (first_element + count); ++i) {
2941                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2942                 /*we only handle the KICK_IT error by doing a recovery */
2943                 if (qeth_handle_send_error(card, buffer,
2944                                            qdio_error, siga_error)
2945                                 == QETH_SEND_ERROR_KICK_IT){
2946                         netif_stop_queue(card->dev);
2947                         qeth_schedule_recovery(card);
2948                         return;
2949                 }
2950                 qeth_clear_output_buffer(queue, buffer);
2951         }
2952         atomic_sub(count, &queue->used_buffers);
2953         /* check if we need to do something on this outbound queue */
2954         if (card->info.type != QETH_CARD_TYPE_IQD)
2955                 qeth_check_outbound_queue(queue);
2956
2957         netif_wake_queue(queue->card->dev);
2958         if (card->options.performance_stats)
2959                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2960                         card->perf_stats.outbound_handler_start_time;
2961 }
2962 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2963
2964 int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2965 {
2966         int cast_type = RTN_UNSPEC;
2967
2968         if (card->info.type == QETH_CARD_TYPE_OSN)
2969                 return cast_type;
2970
2971         if (skb->dst && skb->dst->neighbour) {
2972                 cast_type = skb->dst->neighbour->type;
2973                 if ((cast_type == RTN_BROADCAST) ||
2974                     (cast_type == RTN_MULTICAST) ||
2975                     (cast_type == RTN_ANYCAST))
2976                         return cast_type;
2977                 else
2978                         return RTN_UNSPEC;
2979         }
2980         /* try something else */
2981         if (skb->protocol == ETH_P_IPV6)
2982                 return (skb_network_header(skb)[24] == 0xff) ?
2983                                 RTN_MULTICAST : 0;
2984         else if (skb->protocol == ETH_P_IP)
2985                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2986                                 RTN_MULTICAST : 0;
2987         /* ... */
2988         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2989                 return RTN_BROADCAST;
2990         else {
2991                 u16 hdr_mac;
2992
2993                 hdr_mac = *((u16 *)skb->data);
2994                 /* tr multicast? */
2995                 switch (card->info.link_type) {
2996                 case QETH_LINK_TYPE_HSTR:
2997                 case QETH_LINK_TYPE_LANE_TR:
2998                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2999                             (hdr_mac == QETH_TR_MAC_C))
3000                                 return RTN_MULTICAST;
3001                         break;
3002                 /* eth or so multicast? */
3003                 default:
3004                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
3005                             (hdr_mac == QETH_ETH_MAC_V6))
3006                                 return RTN_MULTICAST;
3007                 }
3008         }
3009         return cast_type;
3010 }
3011 EXPORT_SYMBOL_GPL(qeth_get_cast_type);
3012
3013 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3014                         int ipv, int cast_type)
3015 {
3016         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
3017                 return card->qdio.default_out_queue;
3018         switch (card->qdio.no_out_queues) {
3019         case 4:
3020                 if (cast_type && card->info.is_multicast_different)
3021                         return card->info.is_multicast_different &
3022                                 (card->qdio.no_out_queues - 1);
3023                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3024                         const u8 tos = ip_hdr(skb)->tos;
3025
3026                         if (card->qdio.do_prio_queueing ==
3027                                 QETH_PRIO_Q_ING_TOS) {
3028                                 if (tos & IP_TOS_NOTIMPORTANT)
3029                                         return 3;
3030                                 if (tos & IP_TOS_HIGHRELIABILITY)
3031                                         return 2;
3032                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3033                                         return 1;
3034                                 if (tos & IP_TOS_LOWDELAY)
3035                                         return 0;
3036                         }
3037                         if (card->qdio.do_prio_queueing ==
3038                                 QETH_PRIO_Q_ING_PREC)
3039                                 return 3 - (tos >> 6);
3040                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3041                         /* TODO: IPv6!!! */
3042                 }
3043                 return card->qdio.default_out_queue;
3044         case 1: /* fallthrough for single-out-queue 1920-device */
3045         default:
3046                 return card->qdio.default_out_queue;
3047         }
3048 }
3049 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3050
3051 static void __qeth_free_new_skb(struct sk_buff *orig_skb,
3052                 struct sk_buff *new_skb)
3053 {
3054         if (orig_skb != new_skb)
3055                 dev_kfree_skb_any(new_skb);
3056 }
3057
3058 static inline struct sk_buff *qeth_realloc_headroom(struct qeth_card *card,
3059                 struct sk_buff *skb, int size)
3060 {
3061         struct sk_buff *new_skb = skb;
3062
3063         if (skb_headroom(skb) >= size)
3064                 return skb;
3065         new_skb = skb_realloc_headroom(skb, size);
3066         if (!new_skb)
3067                 PRINT_ERR("Could not realloc headroom for qeth_hdr "
3068                           "on interface %s", QETH_CARD_IFNAME(card));
3069         return new_skb;
3070 }
3071
3072 struct sk_buff *qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb,
3073                  struct qeth_hdr **hdr)
3074 {
3075         struct sk_buff *new_skb;
3076
3077         QETH_DBF_TEXT(trace, 6, "prepskb");
3078
3079         new_skb = qeth_realloc_headroom(card, skb,
3080                         sizeof(struct qeth_hdr));
3081         if (!new_skb)
3082                 return NULL;
3083
3084         *hdr = ((struct qeth_hdr *)qeth_push_skb(card, new_skb,
3085                         sizeof(struct qeth_hdr)));
3086         if (*hdr == NULL) {
3087                 __qeth_free_new_skb(skb, new_skb);
3088                 return NULL;
3089         }
3090         return new_skb;
3091 }
3092 EXPORT_SYMBOL_GPL(qeth_prepare_skb);
3093
3094 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3095                      struct sk_buff *skb, int elems)
3096 {
3097         int elements_needed = 0;
3098
3099         if (skb_shinfo(skb)->nr_frags > 0)
3100                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3101         if (elements_needed == 0)
3102                 elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
3103                         + skb->len) >> PAGE_SHIFT);
3104         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3105                 PRINT_ERR("Invalid size of IP packet "
3106                         "(Number=%d / Length=%d). Discarded.\n",
3107                         (elements_needed+elems), skb->len);
3108                 return 0;
3109         }
3110         return elements_needed;
3111 }
3112 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3113
3114 static void __qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
3115                 int is_tso, int *next_element_to_fill)
3116 {
3117         int length = skb->len;
3118         int length_here;
3119         int element;
3120         char *data;
3121         int first_lap ;
3122
3123         element = *next_element_to_fill;
3124         data = skb->data;
3125         first_lap = (is_tso == 0 ? 1 : 0);
3126
3127         while (length > 0) {
3128                 /* length_here is the remaining amount of data in this page */
3129                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3130                 if (length < length_here)
3131                         length_here = length;
3132
3133                 buffer->element[element].addr = data;
3134                 buffer->element[element].length = length_here;
3135                 length -= length_here;
3136                 if (!length) {
3137                         if (first_lap)
3138                                 buffer->element[element].flags = 0;
3139                         else
3140                                 buffer->element[element].flags =
3141                                     SBAL_FLAGS_LAST_FRAG;
3142                 } else {
3143                         if (first_lap)
3144                                 buffer->element[element].flags =
3145                                     SBAL_FLAGS_FIRST_FRAG;
3146                         else
3147                                 buffer->element[element].flags =
3148                                     SBAL_FLAGS_MIDDLE_FRAG;
3149                 }
3150                 data += length_here;
3151                 element++;
3152                 first_lap = 0;
3153         }
3154         *next_element_to_fill = element;
3155 }
3156
3157 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3158                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb)
3159 {
3160         struct qdio_buffer *buffer;
3161         struct qeth_hdr_tso *hdr;
3162         int flush_cnt = 0, hdr_len, large_send = 0;
3163
3164         QETH_DBF_TEXT(trace, 6, "qdfillbf");
3165
3166         buffer = buf->buffer;
3167         atomic_inc(&skb->users);
3168         skb_queue_tail(&buf->skb_list, skb);
3169
3170         hdr  = (struct qeth_hdr_tso *) skb->data;
3171         /*check first on TSO ....*/
3172         if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3173                 int element = buf->next_element_to_fill;
3174
3175                 hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
3176                 /*fill first buffer entry only with header information */
3177                 buffer->element[element].addr = skb->data;
3178                 buffer->element[element].length = hdr_len;
3179                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3180                 buf->next_element_to_fill++;
3181                 skb->data += hdr_len;
3182                 skb->len  -= hdr_len;
3183                 large_send = 1;
3184         }
3185         if (skb_shinfo(skb)->nr_frags == 0)
3186                 __qeth_fill_buffer(skb, buffer, large_send,
3187                                    (int *)&buf->next_element_to_fill);
3188         else
3189                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3190                                         (int *)&buf->next_element_to_fill);
3191
3192         if (!queue->do_pack) {
3193                 QETH_DBF_TEXT(trace, 6, "fillbfnp");
3194                 /* set state to PRIMED -> will be flushed */
3195                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3196                 flush_cnt = 1;
3197         } else {
3198                 QETH_DBF_TEXT(trace, 6, "fillbfpa");
3199                 if (queue->card->options.performance_stats)
3200                         queue->card->perf_stats.skbs_sent_pack++;
3201                 if (buf->next_element_to_fill >=
3202                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3203                         /*
3204                          * packed buffer if full -> set state PRIMED
3205                          * -> will be flushed
3206                          */
3207                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3208                         flush_cnt = 1;
3209                 }
3210         }
3211         return flush_cnt;
3212 }
3213
3214 int qeth_do_send_packet_fast(struct qeth_card *card,
3215                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3216                 struct qeth_hdr *hdr, int elements_needed,
3217                 struct qeth_eddp_context *ctx)
3218 {
3219         struct qeth_qdio_out_buffer *buffer;
3220         int buffers_needed = 0;
3221         int flush_cnt = 0;
3222         int index;
3223
3224         QETH_DBF_TEXT(trace, 6, "dosndpfa");
3225
3226         /* spin until we get the queue ... */
3227         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3228                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3229         /* ... now we've got the queue */
3230         index = queue->next_buf_to_fill;
3231         buffer = &queue->bufs[queue->next_buf_to_fill];
3232         /*
3233          * check if buffer is empty to make sure that we do not 'overtake'
3234          * ourselves and try to fill a buffer that is already primed
3235          */
3236         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3237                 goto out;
3238         if (ctx == NULL)
3239                 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3240                                           QDIO_MAX_BUFFERS_PER_Q;
3241         else {
3242                 buffers_needed = qeth_eddp_check_buffers_for_context(queue,
3243                                                                         ctx);
3244                 if (buffers_needed < 0)
3245                         goto out;
3246                 queue->next_buf_to_fill =
3247                         (queue->next_buf_to_fill + buffers_needed) %
3248                         QDIO_MAX_BUFFERS_PER_Q;
3249         }
3250         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3251         if (ctx == NULL) {
3252                 qeth_fill_buffer(queue, buffer, skb);
3253                 qeth_flush_buffers(queue, 0, index, 1);
3254         } else {
3255                 flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
3256                 WARN_ON(buffers_needed != flush_cnt);
3257                 qeth_flush_buffers(queue, 0, index, flush_cnt);
3258         }
3259         return 0;
3260 out:
3261         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3262         return -EBUSY;
3263 }
3264 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3265
3266 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3267                 struct sk_buff *skb, struct qeth_hdr *hdr,
3268                 int elements_needed, struct qeth_eddp_context *ctx)
3269 {
3270         struct qeth_qdio_out_buffer *buffer;
3271         int start_index;
3272         int flush_count = 0;
3273         int do_pack = 0;
3274         int tmp;
3275         int rc = 0;
3276
3277         QETH_DBF_TEXT(trace, 6, "dosndpkt");
3278
3279         /* spin until we get the queue ... */
3280         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3281                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3282         start_index = queue->next_buf_to_fill;
3283         buffer = &queue->bufs[queue->next_buf_to_fill];
3284         /*
3285          * check if buffer is empty to make sure that we do not 'overtake'
3286          * ourselves and try to fill a buffer that is already primed
3287          */
3288         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3289                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3290                 return -EBUSY;
3291         }
3292         /* check if we need to switch packing state of this queue */
3293         qeth_switch_to_packing_if_needed(queue);
3294         if (queue->do_pack) {
3295                 do_pack = 1;
3296                 if (ctx == NULL) {
3297                         /* does packet fit in current buffer? */
3298                         if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3299                             buffer->next_element_to_fill) < elements_needed) {
3300                                 /* ... no -> set state PRIMED */
3301                                 atomic_set(&buffer->state,
3302                                         QETH_QDIO_BUF_PRIMED);
3303                                 flush_count++;
3304                                 queue->next_buf_to_fill =
3305                                         (queue->next_buf_to_fill + 1) %
3306                                         QDIO_MAX_BUFFERS_PER_Q;
3307                                 buffer = &queue->bufs[queue->next_buf_to_fill];
3308                                 /* we did a step forward, so check buffer state
3309                                  * again */
3310                                 if (atomic_read(&buffer->state) !=
3311                                                 QETH_QDIO_BUF_EMPTY){
3312                                         qeth_flush_buffers(queue, 0,
3313                                                 start_index, flush_count);
3314                                         atomic_set(&queue->state,
3315                                                 QETH_OUT_Q_UNLOCKED);
3316                                         return -EBUSY;
3317                                 }
3318                         }
3319                 } else {
3320                         /* check if we have enough elements (including following
3321                          * free buffers) to handle eddp context */
3322                         if (qeth_eddp_check_buffers_for_context(queue, ctx)
3323                                 < 0) {
3324                                 if (net_ratelimit())
3325                                         PRINT_WARN("eddp tx_dropped 1\n");
3326                                 rc = -EBUSY;
3327                                 goto out;
3328                         }
3329                 }
3330         }
3331         if (ctx == NULL)
3332                 tmp = qeth_fill_buffer(queue, buffer, skb);
3333         else {
3334                 tmp = qeth_eddp_fill_buffer(queue, ctx,
3335                                                 queue->next_buf_to_fill);
3336                 if (tmp < 0) {
3337                         PRINT_ERR("eddp tx_dropped 2\n");
3338                         rc = -EBUSY;
3339                         goto out;
3340                 }
3341         }
3342         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3343                                   QDIO_MAX_BUFFERS_PER_Q;
3344         flush_count += tmp;
3345 out:
3346         if (flush_count)
3347                 qeth_flush_buffers(queue, 0, start_index, flush_count);
3348         else if (!atomic_read(&queue->set_pci_flags_count))
3349                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3350         /*
3351          * queue->state will go from LOCKED -> UNLOCKED or from
3352          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3353          * (switch packing state or flush buffer to get another pci flag out).
3354          * In that case we will enter this loop
3355          */
3356         while (atomic_dec_return(&queue->state)) {
3357                 flush_count = 0;
3358                 start_index = queue->next_buf_to_fill;
3359                 /* check if we can go back to non-packing state */
3360                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3361                 /*
3362                  * check if we need to flush a packing buffer to get a pci
3363                  * flag out on the queue
3364                  */
3365                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3366                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3367                 if (flush_count)
3368                         qeth_flush_buffers(queue, 0, start_index, flush_count);
3369         }
3370         /* at this point the queue is UNLOCKED again */
3371         if (queue->card->options.performance_stats && do_pack)
3372                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3373
3374         return rc;
3375 }
3376 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3377
3378 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3379                 struct qeth_reply *reply, unsigned long data)
3380 {
3381         struct qeth_ipa_cmd *cmd;
3382         struct qeth_ipacmd_setadpparms *setparms;
3383
3384         QETH_DBF_TEXT(trace, 4, "prmadpcb");
3385
3386         cmd = (struct qeth_ipa_cmd *) data;
3387         setparms = &(cmd->data.setadapterparms);
3388
3389         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3390         if (cmd->hdr.return_code) {
3391                 QETH_DBF_TEXT_(trace, 4, "prmrc%2.2x", cmd->hdr.return_code);
3392                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3393         }
3394         card->info.promisc_mode = setparms->data.mode;
3395         return 0;
3396 }
3397
3398 void qeth_setadp_promisc_mode(struct qeth_card *card)
3399 {
3400         enum qeth_ipa_promisc_modes mode;
3401         struct net_device *dev = card->dev;
3402         struct qeth_cmd_buffer *iob;
3403         struct qeth_ipa_cmd *cmd;
3404
3405         QETH_DBF_TEXT(trace, 4, "setprom");
3406
3407         if (((dev->flags & IFF_PROMISC) &&
3408              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3409             (!(dev->flags & IFF_PROMISC) &&
3410              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3411                 return;
3412         mode = SET_PROMISC_MODE_OFF;
3413         if (dev->flags & IFF_PROMISC)
3414                 mode = SET_PROMISC_MODE_ON;
3415         QETH_DBF_TEXT_(trace, 4, "mode:%x", mode);
3416
3417         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3418                         sizeof(struct qeth_ipacmd_setadpparms));
3419         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3420         cmd->data.setadapterparms.data.mode = mode;
3421         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3422 }
3423 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3424
3425 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3426 {
3427         struct qeth_card *card;
3428         char dbf_text[15];
3429
3430         card = netdev_priv(dev);
3431
3432         QETH_DBF_TEXT(trace, 4, "chgmtu");
3433         sprintf(dbf_text, "%8x", new_mtu);
3434         QETH_DBF_TEXT(trace, 4, dbf_text);
3435
3436         if (new_mtu < 64)
3437                 return -EINVAL;
3438         if (new_mtu > 65535)
3439                 return -EINVAL;
3440         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3441             (!qeth_mtu_is_valid(card, new_mtu)))
3442                 return -EINVAL;
3443         dev->mtu = new_mtu;
3444         return 0;
3445 }
3446 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3447
3448 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3449 {
3450         struct qeth_card *card;
3451
3452         card = netdev_priv(dev);
3453
3454         QETH_DBF_TEXT(trace, 5, "getstat");
3455
3456         return &card->stats;
3457 }
3458 EXPORT_SYMBOL_GPL(qeth_get_stats);
3459
3460 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3461                 struct qeth_reply *reply, unsigned long data)
3462 {
3463         struct qeth_ipa_cmd *cmd;
3464
3465         QETH_DBF_TEXT(trace, 4, "chgmaccb");
3466
3467         cmd = (struct qeth_ipa_cmd *) data;
3468         if (!card->options.layer2 ||
3469             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3470                 memcpy(card->dev->dev_addr,
3471                        &cmd->data.setadapterparms.data.change_addr.addr,
3472                        OSA_ADDR_LEN);
3473                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3474         }
3475         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3476         return 0;
3477 }
3478
3479 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3480 {
3481         int rc;
3482         struct qeth_cmd_buffer *iob;
3483         struct qeth_ipa_cmd *cmd;
3484
3485         QETH_DBF_TEXT(trace, 4, "chgmac");
3486
3487         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3488                                    sizeof(struct qeth_ipacmd_setadpparms));
3489         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3490         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3491         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3492         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3493                card->dev->dev_addr, OSA_ADDR_LEN);
3494         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3495                                NULL);
3496         return rc;
3497 }
3498 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3499
3500 void qeth_tx_timeout(struct net_device *dev)
3501 {
3502         struct qeth_card *card;
3503
3504         card = netdev_priv(dev);
3505         card->stats.tx_errors++;
3506         qeth_schedule_recovery(card);
3507 }
3508 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3509
3510 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3511 {
3512         struct qeth_card *card = netdev_priv(dev);
3513         int rc = 0;
3514
3515         switch (regnum) {
3516         case MII_BMCR: /* Basic mode control register */
3517                 rc = BMCR_FULLDPLX;
3518                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3519                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3520                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3521                         rc |= BMCR_SPEED100;
3522                 break;
3523         case MII_BMSR: /* Basic mode status register */
3524                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3525                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3526                      BMSR_100BASE4;
3527                 break;
3528         case MII_PHYSID1: /* PHYS ID 1 */
3529                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3530                      dev->dev_addr[2];
3531                 rc = (rc >> 5) & 0xFFFF;
3532                 break;
3533         case MII_PHYSID2: /* PHYS ID 2 */
3534                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3535                 break;
3536         case MII_ADVERTISE: /* Advertisement control reg */
3537                 rc = ADVERTISE_ALL;
3538                 break;
3539         case MII_LPA: /* Link partner ability reg */
3540                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3541                      LPA_100BASE4 | LPA_LPACK;
3542                 break;
3543         case MII_EXPANSION: /* Expansion register */
3544                 break;
3545         case MII_DCOUNTER: /* disconnect counter */
3546                 break;
3547         case MII_FCSCOUNTER: /* false carrier counter */
3548                 break;
3549         case MII_NWAYTEST: /* N-way auto-neg test register */
3550                 break;
3551         case MII_RERRCOUNTER: /* rx error counter */
3552                 rc = card->stats.rx_errors;
3553                 break;
3554         case MII_SREVISION: /* silicon revision */
3555                 break;
3556         case MII_RESV1: /* reserved 1 */
3557                 break;
3558         case MII_LBRERROR: /* loopback, rx, bypass error */
3559                 break;
3560         case MII_PHYADDR: /* physical address */
3561                 break;
3562         case MII_RESV2: /* reserved 2 */
3563                 break;
3564         case MII_TPISTATUS: /* TPI status for 10mbps */
3565                 break;
3566         case MII_NCONFIG: /* network interface config */
3567                 break;
3568         default:
3569                 break;
3570         }
3571         return rc;
3572 }
3573 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3574
3575 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3576                 struct qeth_cmd_buffer *iob, int len,
3577                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3578                         unsigned long),
3579                 void *reply_param)
3580 {
3581         u16 s1, s2;
3582
3583         QETH_DBF_TEXT(trace, 4, "sendsnmp");
3584
3585         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3586         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3587                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3588         /* adjust PDU length fields in IPA_PDU_HEADER */
3589         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3590         s2 = (u32) len;
3591         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3592         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3593         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3594         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3595         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3596                                       reply_cb, reply_param);
3597 }
3598
3599 static int qeth_snmp_command_cb(struct qeth_card *card,
3600                 struct qeth_reply *reply, unsigned long sdata)
3601 {
3602         struct qeth_ipa_cmd *cmd;
3603         struct qeth_arp_query_info *qinfo;
3604         struct qeth_snmp_cmd *snmp;
3605         unsigned char *data;
3606         __u16 data_len;
3607
3608         QETH_DBF_TEXT(trace, 3, "snpcmdcb");
3609
3610         cmd = (struct qeth_ipa_cmd *) sdata;
3611         data = (unsigned char *)((char *)cmd - reply->offset);
3612         qinfo = (struct qeth_arp_query_info *) reply->param;
3613         snmp = &cmd->data.setadapterparms.data.snmp;
3614
3615         if (cmd->hdr.return_code) {
3616                 QETH_DBF_TEXT_(trace, 4, "scer1%i", cmd->hdr.return_code);
3617                 return 0;
3618         }
3619         if (cmd->data.setadapterparms.hdr.return_code) {
3620                 cmd->hdr.return_code =
3621                         cmd->data.setadapterparms.hdr.return_code;
3622                 QETH_DBF_TEXT_(trace, 4, "scer2%i", cmd->hdr.return_code);
3623                 return 0;
3624         }
3625         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3626         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3627                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3628         else
3629                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3630
3631         /* check if there is enough room in userspace */
3632         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3633                 QETH_DBF_TEXT_(trace, 4, "scer3%i", -ENOMEM);
3634                 cmd->hdr.return_code = -ENOMEM;
3635                 return 0;
3636         }
3637         QETH_DBF_TEXT_(trace, 4, "snore%i",
3638                        cmd->data.setadapterparms.hdr.used_total);
3639         QETH_DBF_TEXT_(trace, 4, "sseqn%i",
3640                 cmd->data.setadapterparms.hdr.seq_no);
3641         /*copy entries to user buffer*/
3642         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3643                 memcpy(qinfo->udata + qinfo->udata_offset,
3644                        (char *)snmp,
3645                        data_len + offsetof(struct qeth_snmp_cmd, data));
3646                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3647         } else {
3648                 memcpy(qinfo->udata + qinfo->udata_offset,
3649                        (char *)&snmp->request, data_len);
3650         }
3651         qinfo->udata_offset += data_len;
3652         /* check if all replies received ... */
3653                 QETH_DBF_TEXT_(trace, 4, "srtot%i",
3654                                cmd->data.setadapterparms.hdr.used_total);
3655                 QETH_DBF_TEXT_(trace, 4, "srseq%i",
3656                                cmd->data.setadapterparms.hdr.seq_no);
3657         if (cmd->data.setadapterparms.hdr.seq_no <
3658             cmd->data.setadapterparms.hdr.used_total)
3659                 return 1;
3660         return 0;
3661 }
3662
3663 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3664 {
3665         struct qeth_cmd_buffer *iob;
3666         struct qeth_ipa_cmd *cmd;
3667         struct qeth_snmp_ureq *ureq;
3668         int req_len;
3669         struct qeth_arp_query_info qinfo = {0, };
3670         int rc = 0;
3671
3672         QETH_DBF_TEXT(trace, 3, "snmpcmd");
3673
3674         if (card->info.guestlan)
3675                 return -EOPNOTSUPP;
3676
3677         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3678             (!card->options.layer2)) {
3679                 PRINT_WARN("SNMP Query MIBS not supported "
3680                            "on %s!\n", QETH_CARD_IFNAME(card));
3681                 return -EOPNOTSUPP;
3682         }
3683         /* skip 4 bytes (data_len struct member) to get req_len */
3684         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3685                 return -EFAULT;
3686         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3687         if (!ureq) {
3688                 QETH_DBF_TEXT(trace, 2, "snmpnome");
3689                 return -ENOMEM;
3690         }
3691         if (copy_from_user(ureq, udata,
3692                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3693                 kfree(ureq);
3694                 return -EFAULT;
3695         }
3696         qinfo.udata_len = ureq->hdr.data_len;
3697         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3698         if (!qinfo.udata) {
3699                 kfree(ureq);
3700                 return -ENOMEM;
3701         }
3702         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3703
3704         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3705                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3706         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3707         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3708         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3709                                     qeth_snmp_command_cb, (void *)&qinfo);
3710         if (rc)
3711                 PRINT_WARN("SNMP command failed on %s: (0x%x)\n",
3712                            QETH_CARD_IFNAME(card), rc);
3713         else {
3714                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3715                         rc = -EFAULT;
3716         }
3717
3718         kfree(ureq);
3719         kfree(qinfo.udata);
3720         return rc;
3721 }
3722 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3723
3724 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3725 {
3726         switch (card->info.type) {
3727         case QETH_CARD_TYPE_IQD:
3728                 return 2;
3729         default:
3730                 return 0;
3731         }
3732 }
3733
3734 static int qeth_qdio_establish(struct qeth_card *card)
3735 {
3736         struct qdio_initialize init_data;
3737         char *qib_param_field;
3738         struct qdio_buffer **in_sbal_ptrs;
3739         struct qdio_buffer **out_sbal_ptrs;
3740         int i, j, k;
3741         int rc = 0;
3742
3743         QETH_DBF_TEXT(setup, 2, "qdioest");
3744
3745         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3746                               GFP_KERNEL);
3747         if (!qib_param_field)
3748                 return -ENOMEM;
3749
3750         qeth_create_qib_param_field(card, qib_param_field);
3751         qeth_create_qib_param_field_blkt(card, qib_param_field);
3752
3753         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3754                                GFP_KERNEL);
3755         if (!in_sbal_ptrs) {
3756                 kfree(qib_param_field);
3757                 return -ENOMEM;
3758         }
3759         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3760                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3761                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3762
3763         out_sbal_ptrs =
3764                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3765                         sizeof(void *), GFP_KERNEL);
3766         if (!out_sbal_ptrs) {
3767                 kfree(in_sbal_ptrs);
3768                 kfree(qib_param_field);
3769                 return -ENOMEM;
3770         }
3771         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3772                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3773                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3774                                 card->qdio.out_qs[i]->bufs[j].buffer);
3775                 }
3776
3777         memset(&init_data, 0, sizeof(struct qdio_initialize));
3778         init_data.cdev                   = CARD_DDEV(card);
3779         init_data.q_format               = qeth_get_qdio_q_format(card);
3780         init_data.qib_param_field_format = 0;
3781         init_data.qib_param_field        = qib_param_field;
3782         init_data.min_input_threshold    = QETH_MIN_INPUT_THRESHOLD;
3783         init_data.max_input_threshold    = QETH_MAX_INPUT_THRESHOLD;
3784         init_data.min_output_threshold   = QETH_MIN_OUTPUT_THRESHOLD;
3785         init_data.max_output_threshold   = QETH_MAX_OUTPUT_THRESHOLD;
3786         init_data.no_input_qs            = 1;
3787         init_data.no_output_qs           = card->qdio.no_out_queues;
3788         init_data.input_handler          = card->discipline.input_handler;
3789         init_data.output_handler         = card->discipline.output_handler;
3790         init_data.int_parm               = (unsigned long) card;
3791         init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
3792                                            QDIO_OUTBOUND_0COPY_SBALS |
3793                                            QDIO_USE_OUTBOUND_PCIS;
3794         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3795         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3796
3797         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3798                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3799                 rc = qdio_initialize(&init_data);
3800                 if (rc)
3801                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3802         }
3803         kfree(out_sbal_ptrs);
3804         kfree(in_sbal_ptrs);
3805         kfree(qib_param_field);
3806         return rc;
3807 }
3808
3809 static void qeth_core_free_card(struct qeth_card *card)
3810 {
3811
3812         QETH_DBF_TEXT(setup, 2, "freecrd");
3813         QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
3814         qeth_clean_channel(&card->read);
3815         qeth_clean_channel(&card->write);
3816         if (card->dev)
3817                 free_netdev(card->dev);
3818         kfree(card->ip_tbd_list);
3819         qeth_free_qdio_buffers(card);
3820         kfree(card);
3821 }
3822
3823 static struct ccw_device_id qeth_ids[] = {
3824         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3825         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3826         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3827         {},
3828 };
3829 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3830
3831 static struct ccw_driver qeth_ccw_driver = {
3832         .name = "qeth",
3833         .ids = qeth_ids,
3834         .probe = ccwgroup_probe_ccwdev,
3835         .remove = ccwgroup_remove_ccwdev,
3836 };
3837
3838 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3839                                 unsigned long driver_id)
3840 {
3841         const char *start, *end;
3842         char bus_ids[3][BUS_ID_SIZE], *argv[3];
3843         int i;
3844
3845         start = buf;
3846         for (i = 0; i < 3; i++) {
3847                 static const char delim[] = { ',', ',', '\n' };
3848                 int len;
3849
3850                 end = strchr(start, delim[i]);
3851                 if (!end)
3852                         return -EINVAL;
3853                 len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start);
3854                 strncpy(bus_ids[i], start, len);
3855                 bus_ids[i][len] = '\0';
3856                 start = end + 1;
3857                 argv[i] = bus_ids[i];
3858         }
3859
3860         return (ccwgroup_create(root_dev, driver_id,
3861                                 &qeth_ccw_driver, 3, argv));
3862 }
3863
3864 int qeth_core_hardsetup_card(struct qeth_card *card)
3865 {
3866         int retries = 3;
3867         int mpno;
3868         int rc;
3869
3870         QETH_DBF_TEXT(setup, 2, "hrdsetup");
3871         atomic_set(&card->force_alloc_skb, 0);
3872 retry:
3873         if (retries < 3) {
3874                 PRINT_WARN("Retrying to do IDX activates.\n");
3875                 ccw_device_set_offline(CARD_DDEV(card));
3876                 ccw_device_set_offline(CARD_WDEV(card));
3877                 ccw_device_set_offline(CARD_RDEV(card));
3878                 ccw_device_set_online(CARD_RDEV(card));
3879                 ccw_device_set_online(CARD_WDEV(card));
3880                 ccw_device_set_online(CARD_DDEV(card));
3881         }
3882         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3883         if (rc == -ERESTARTSYS) {
3884                 QETH_DBF_TEXT(setup, 2, "break1");
3885                 return rc;
3886         } else if (rc) {
3887                 QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
3888                 if (--retries < 0)
3889                         goto out;
3890                 else
3891                         goto retry;
3892         }
3893
3894         rc = qeth_get_unitaddr(card);
3895         if (rc) {
3896                 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
3897                 return rc;
3898         }
3899
3900         mpno = QETH_MAX_PORTNO;
3901         if (card->info.portno > mpno) {
3902                 PRINT_ERR("Device %s does not offer port number %d \n.",
3903                         CARD_BUS_ID(card), card->info.portno);
3904                 rc = -ENODEV;
3905                 goto out;
3906         }
3907         qeth_init_tokens(card);
3908         qeth_init_func_level(card);
3909         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3910         if (rc == -ERESTARTSYS) {
3911                 QETH_DBF_TEXT(setup, 2, "break2");
3912                 return rc;
3913         } else if (rc) {
3914                 QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
3915                 if (--retries < 0)
3916                         goto out;
3917                 else
3918                         goto retry;
3919         }
3920         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3921         if (rc == -ERESTARTSYS) {
3922                 QETH_DBF_TEXT(setup, 2, "break3");
3923                 return rc;
3924         } else if (rc) {
3925                 QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
3926                 if (--retries < 0)
3927                         goto out;
3928                 else
3929                         goto retry;
3930         }
3931         rc = qeth_mpc_initialize(card);
3932         if (rc) {
3933                 QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
3934                 goto out;
3935         }
3936         return 0;
3937 out:
3938         PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
3939         return rc;
3940 }
3941 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3942
3943 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3944                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3945 {
3946         struct page *page = virt_to_page(element->addr);
3947         if (*pskb == NULL) {
3948                 /* the upper protocol layers assume that there is data in the
3949                  * skb itself. Copy a small amount (64 bytes) to make them
3950                  * happy. */
3951                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3952                 if (!(*pskb))
3953                         return -ENOMEM;
3954                 skb_reserve(*pskb, ETH_HLEN);
3955                 if (data_len <= 64) {
3956                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3957                                 data_len);
3958                 } else {
3959                         get_page(page);
3960                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3961                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3962                                 data_len - 64);
3963                         (*pskb)->data_len += data_len - 64;
3964                         (*pskb)->len      += data_len - 64;
3965                         (*pskb)->truesize += data_len - 64;
3966                         (*pfrag)++;
3967                 }
3968         } else {
3969                 get_page(page);
3970                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3971                 (*pskb)->data_len += data_len;
3972                 (*pskb)->len      += data_len;
3973                 (*pskb)->truesize += data_len;
3974                 (*pfrag)++;
3975         }
3976         return 0;
3977 }
3978
3979 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3980                 struct qdio_buffer *buffer,
3981                 struct qdio_buffer_element **__element, int *__offset,
3982                 struct qeth_hdr **hdr)
3983 {
3984         struct qdio_buffer_element *element = *__element;
3985         int offset = *__offset;
3986         struct sk_buff *skb = NULL;
3987         int skb_len;
3988         void *data_ptr;
3989         int data_len;
3990         int headroom = 0;
3991         int use_rx_sg = 0;
3992         int frag = 0;
3993
3994         QETH_DBF_TEXT(trace, 6, "nextskb");
3995         /* qeth_hdr must not cross element boundaries */
3996         if (element->length < offset + sizeof(struct qeth_hdr)) {
3997                 if (qeth_is_last_sbale(element))
3998                         return NULL;
3999                 element++;
4000                 offset = 0;
4001                 if (element->length < sizeof(struct qeth_hdr))
4002                         return NULL;
4003         }
4004         *hdr = element->addr + offset;
4005
4006         offset += sizeof(struct qeth_hdr);
4007         if (card->options.layer2) {
4008                 if (card->info.type == QETH_CARD_TYPE_OSN) {
4009                         skb_len = (*hdr)->hdr.osn.pdu_length;
4010                         headroom = sizeof(struct qeth_hdr);
4011                 } else {
4012                         skb_len = (*hdr)->hdr.l2.pkt_length;
4013                 }
4014         } else {
4015                 skb_len = (*hdr)->hdr.l3.length;
4016                 headroom = max((int)ETH_HLEN, (int)TR_HLEN);
4017         }
4018
4019         if (!skb_len)
4020                 return NULL;
4021
4022         if ((skb_len >= card->options.rx_sg_cb) &&
4023             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4024             (!atomic_read(&card->force_alloc_skb))) {
4025                 use_rx_sg = 1;
4026         } else {
4027                 skb = dev_alloc_skb(skb_len + headroom);
4028                 if (!skb)
4029                         goto no_mem;
4030                 if (headroom)
4031                         skb_reserve(skb, headroom);
4032         }
4033
4034         data_ptr = element->addr + offset;
4035         while (skb_len) {
4036                 data_len = min(skb_len, (int)(element->length - offset));
4037                 if (data_len) {
4038                         if (use_rx_sg) {
4039                                 if (qeth_create_skb_frag(element, &skb, offset,
4040                                     &frag, data_len))
4041                                         goto no_mem;
4042                         } else {
4043                                 memcpy(skb_put(skb, data_len), data_ptr,
4044                                         data_len);
4045                         }
4046                 }
4047                 skb_len -= data_len;
4048                 if (skb_len) {
4049                         if (qeth_is_last_sbale(element)) {
4050                                 QETH_DBF_TEXT(trace, 4, "unexeob");
4051                                 QETH_DBF_TEXT_(trace, 4, "%s",
4052                                         CARD_BUS_ID(card));
4053                                 QETH_DBF_TEXT(qerr, 2, "unexeob");
4054                                 QETH_DBF_TEXT_(qerr, 2, "%s",
4055                                         CARD_BUS_ID(card));
4056                                 QETH_DBF_HEX(misc, 4, buffer, sizeof(*buffer));
4057                                 dev_kfree_skb_any(skb);
4058                                 card->stats.rx_errors++;
4059                                 return NULL;
4060                         }
4061                         element++;
4062                         offset = 0;
4063                         data_ptr = element->addr;
4064                 } else {
4065                         offset += data_len;
4066                 }
4067         }
4068         *__element = element;
4069         *__offset = offset;
4070         if (use_rx_sg && card->options.performance_stats) {
4071                 card->perf_stats.sg_skbs_rx++;
4072                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4073         }
4074         return skb;
4075 no_mem:
4076         if (net_ratelimit()) {
4077                 PRINT_WARN("No memory for packet received on %s.\n",
4078                            QETH_CARD_IFNAME(card));
4079                 QETH_DBF_TEXT(trace, 2, "noskbmem");
4080                 QETH_DBF_TEXT_(trace, 2, "%s", CARD_BUS_ID(card));
4081         }
4082         card->stats.rx_dropped++;
4083         return NULL;
4084 }
4085 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4086
4087 static void qeth_unregister_dbf_views(void)
4088 {
4089         if (qeth_dbf_setup)
4090                 debug_unregister(qeth_dbf_setup);
4091         if (qeth_dbf_qerr)
4092                 debug_unregister(qeth_dbf_qerr);
4093         if (qeth_dbf_sense)
4094                 debug_unregister(qeth_dbf_sense);
4095         if (qeth_dbf_misc)
4096                 debug_unregister(qeth_dbf_misc);
4097         if (qeth_dbf_data)
4098                 debug_unregister(qeth_dbf_data);
4099         if (qeth_dbf_control)
4100                 debug_unregister(qeth_dbf_control);
4101         if (qeth_dbf_trace)
4102                 debug_unregister(qeth_dbf_trace);
4103 }
4104
4105 static int qeth_register_dbf_views(void)
4106 {
4107         qeth_dbf_setup = debug_register(QETH_DBF_SETUP_NAME,
4108                                         QETH_DBF_SETUP_PAGES,
4109                                         QETH_DBF_SETUP_NR_AREAS,
4110                                         QETH_DBF_SETUP_LEN);
4111         qeth_dbf_misc = debug_register(QETH_DBF_MISC_NAME,
4112                                        QETH_DBF_MISC_PAGES,
4113                                        QETH_DBF_MISC_NR_AREAS,
4114                                        QETH_DBF_MISC_LEN);
4115         qeth_dbf_data = debug_register(QETH_DBF_DATA_NAME,
4116                                        QETH_DBF_DATA_PAGES,
4117                                        QETH_DBF_DATA_NR_AREAS,
4118                                        QETH_DBF_DATA_LEN);
4119         qeth_dbf_control = debug_register(QETH_DBF_CONTROL_NAME,
4120                                           QETH_DBF_CONTROL_PAGES,
4121                                           QETH_DBF_CONTROL_NR_AREAS,
4122                                           QETH_DBF_CONTROL_LEN);
4123         qeth_dbf_sense = debug_register(QETH_DBF_SENSE_NAME,
4124                                         QETH_DBF_SENSE_PAGES,
4125                                         QETH_DBF_SENSE_NR_AREAS,
4126                                         QETH_DBF_SENSE_LEN);
4127         qeth_dbf_qerr = debug_register(QETH_DBF_QERR_NAME,
4128                                        QETH_DBF_QERR_PAGES,
4129                                        QETH_DBF_QERR_NR_AREAS,
4130                                        QETH_DBF_QERR_LEN);
4131         qeth_dbf_trace = debug_register(QETH_DBF_TRACE_NAME,
4132                                         QETH_DBF_TRACE_PAGES,
4133                                         QETH_DBF_TRACE_NR_AREAS,
4134                                         QETH_DBF_TRACE_LEN);
4135
4136         if ((qeth_dbf_setup == NULL) || (qeth_dbf_misc == NULL)    ||
4137             (qeth_dbf_data == NULL)  || (qeth_dbf_control == NULL) ||
4138             (qeth_dbf_sense == NULL) || (qeth_dbf_qerr == NULL)    ||
4139             (qeth_dbf_trace == NULL)) {
4140                 qeth_unregister_dbf_views();
4141                 return -ENOMEM;
4142         }
4143         debug_register_view(qeth_dbf_setup, &debug_hex_ascii_view);
4144         debug_set_level(qeth_dbf_setup, QETH_DBF_SETUP_LEVEL);
4145
4146         debug_register_view(qeth_dbf_misc, &debug_hex_ascii_view);
4147         debug_set_level(qeth_dbf_misc, QETH_DBF_MISC_LEVEL);
4148
4149         debug_register_view(qeth_dbf_data, &debug_hex_ascii_view);
4150         debug_set_level(qeth_dbf_data, QETH_DBF_DATA_LEVEL);
4151
4152         debug_register_view(qeth_dbf_control, &debug_hex_ascii_view);
4153         debug_set_level(qeth_dbf_control, QETH_DBF_CONTROL_LEVEL);
4154
4155         debug_register_view(qeth_dbf_sense, &debug_hex_ascii_view);
4156         debug_set_level(qeth_dbf_sense, QETH_DBF_SENSE_LEVEL);
4157
4158         debug_register_view(qeth_dbf_qerr, &debug_hex_ascii_view);
4159         debug_set_level(qeth_dbf_qerr, QETH_DBF_QERR_LEVEL);
4160
4161         debug_register_view(qeth_dbf_trace, &debug_hex_ascii_view);
4162         debug_set_level(qeth_dbf_trace, QETH_DBF_TRACE_LEVEL);
4163
4164         return 0;
4165 }
4166
4167 int qeth_core_load_discipline(struct qeth_card *card,
4168                 enum qeth_discipline_id discipline)
4169 {
4170         int rc = 0;
4171         switch (discipline) {
4172         case QETH_DISCIPLINE_LAYER3:
4173                 card->discipline.ccwgdriver = try_then_request_module(
4174                         symbol_get(qeth_l3_ccwgroup_driver),
4175                         "qeth_l3");
4176                 break;
4177         case QETH_DISCIPLINE_LAYER2:
4178                 card->discipline.ccwgdriver = try_then_request_module(
4179                         symbol_get(qeth_l2_ccwgroup_driver),
4180                         "qeth_l2");
4181                 break;
4182         }
4183         if (!card->discipline.ccwgdriver) {
4184                 PRINT_ERR("Support for discipline %d not present\n",
4185                                 discipline);
4186                 rc = -EINVAL;
4187         }
4188         return rc;
4189 }
4190
4191 void qeth_core_free_discipline(struct qeth_card *card)
4192 {
4193         if (card->options.layer2)
4194                 symbol_put(qeth_l2_ccwgroup_driver);
4195         else
4196                 symbol_put(qeth_l3_ccwgroup_driver);
4197         card->discipline.ccwgdriver = NULL;
4198 }
4199
4200 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4201 {
4202         struct qeth_card *card;
4203         struct device *dev;
4204         int rc;
4205         unsigned long flags;
4206
4207         QETH_DBF_TEXT(setup, 2, "probedev");
4208
4209         dev = &gdev->dev;
4210         if (!get_device(dev))
4211                 return -ENODEV;
4212
4213         QETH_DBF_TEXT_(setup, 2, "%s", gdev->dev.bus_id);
4214
4215         card = qeth_alloc_card();
4216         if (!card) {
4217                 QETH_DBF_TEXT_(setup, 2, "1err%d", -ENOMEM);
4218                 rc = -ENOMEM;
4219                 goto err_dev;
4220         }
4221         card->read.ccwdev  = gdev->cdev[0];
4222         card->write.ccwdev = gdev->cdev[1];
4223         card->data.ccwdev  = gdev->cdev[2];
4224         dev_set_drvdata(&gdev->dev, card);
4225         card->gdev = gdev;
4226         gdev->cdev[0]->handler = qeth_irq;
4227         gdev->cdev[1]->handler = qeth_irq;
4228         gdev->cdev[2]->handler = qeth_irq;
4229
4230         rc = qeth_determine_card_type(card);
4231         if (rc) {
4232                 PRINT_WARN("%s: not a valid card type\n", __func__);
4233                 QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
4234                 goto err_card;
4235         }
4236         rc = qeth_setup_card(card);
4237         if (rc) {
4238                 QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
4239                 goto err_card;
4240         }
4241
4242         if (card->info.type == QETH_CARD_TYPE_OSN) {
4243                 rc = qeth_core_create_osn_attributes(dev);
4244                 if (rc)
4245                         goto err_card;
4246                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4247                 if (rc) {
4248                         qeth_core_remove_osn_attributes(dev);
4249                         goto err_card;
4250                 }
4251                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4252                 if (rc) {
4253                         qeth_core_free_discipline(card);
4254                         qeth_core_remove_osn_attributes(dev);
4255                         goto err_card;
4256                 }
4257         } else {
4258                 rc = qeth_core_create_device_attributes(dev);
4259                 if (rc)
4260                         goto err_card;
4261         }
4262
4263         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4264         list_add_tail(&card->list, &qeth_core_card_list.list);
4265         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4266         return 0;
4267
4268 err_card:
4269         qeth_core_free_card(card);
4270 err_dev:
4271         put_device(dev);
4272         return rc;
4273 }
4274
4275 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4276 {
4277         unsigned long flags;
4278         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4279
4280         if (card->discipline.ccwgdriver) {
4281                 card->discipline.ccwgdriver->remove(gdev);
4282                 qeth_core_free_discipline(card);
4283         }
4284
4285         if (card->info.type == QETH_CARD_TYPE_OSN) {
4286                 qeth_core_remove_osn_attributes(&gdev->dev);
4287         } else {
4288                 qeth_core_remove_device_attributes(&gdev->dev);
4289         }
4290         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4291         list_del(&card->list);
4292         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4293         qeth_core_free_card(card);
4294         dev_set_drvdata(&gdev->dev, NULL);
4295         put_device(&gdev->dev);
4296         return;
4297 }
4298
4299 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4300 {
4301         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4302         int rc = 0;
4303         int def_discipline;
4304
4305         if (!card->discipline.ccwgdriver) {
4306                 if (card->info.type == QETH_CARD_TYPE_IQD)
4307                         def_discipline = QETH_DISCIPLINE_LAYER3;
4308                 else
4309                         def_discipline = QETH_DISCIPLINE_LAYER2;
4310                 rc = qeth_core_load_discipline(card, def_discipline);
4311                 if (rc)
4312                         goto err;
4313                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4314                 if (rc)
4315                         goto err;
4316         }
4317         rc = card->discipline.ccwgdriver->set_online(gdev);
4318 err:
4319         return rc;
4320 }
4321
4322 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4323 {
4324         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4325         return card->discipline.ccwgdriver->set_offline(gdev);
4326 }
4327
4328 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4329 {
4330         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4331         if (card->discipline.ccwgdriver &&
4332             card->discipline.ccwgdriver->shutdown)
4333                 card->discipline.ccwgdriver->shutdown(gdev);
4334 }
4335
4336 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4337         .owner = THIS_MODULE,
4338         .name = "qeth",
4339         .driver_id = 0xD8C5E3C8,
4340         .probe = qeth_core_probe_device,
4341         .remove = qeth_core_remove_device,
4342         .set_online = qeth_core_set_online,
4343         .set_offline = qeth_core_set_offline,
4344         .shutdown = qeth_core_shutdown,
4345 };
4346
4347 static ssize_t
4348 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4349                            size_t count)
4350 {
4351         int err;
4352         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4353                                         qeth_core_ccwgroup_driver.driver_id);
4354         if (err)
4355                 return err;
4356         else
4357                 return count;
4358 }
4359
4360 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4361
4362 static struct {
4363         const char str[ETH_GSTRING_LEN];
4364 } qeth_ethtool_stats_keys[] = {
4365 /*  0 */{"rx skbs"},
4366         {"rx buffers"},
4367         {"tx skbs"},
4368         {"tx buffers"},
4369         {"tx skbs no packing"},
4370         {"tx buffers no packing"},
4371         {"tx skbs packing"},
4372         {"tx buffers packing"},
4373         {"tx sg skbs"},
4374         {"tx sg frags"},
4375 /* 10 */{"rx sg skbs"},
4376         {"rx sg frags"},
4377         {"rx sg page allocs"},
4378         {"tx large kbytes"},
4379         {"tx large count"},
4380         {"tx pk state ch n->p"},
4381         {"tx pk state ch p->n"},
4382         {"tx pk watermark low"},
4383         {"tx pk watermark high"},
4384         {"queue 0 buffer usage"},
4385 /* 20 */{"queue 1 buffer usage"},
4386         {"queue 2 buffer usage"},
4387         {"queue 3 buffer usage"},
4388         {"rx handler time"},
4389         {"rx handler count"},
4390         {"rx do_QDIO time"},
4391         {"rx do_QDIO count"},
4392         {"tx handler time"},
4393         {"tx handler count"},
4394         {"tx time"},
4395 /* 30 */{"tx count"},
4396         {"tx do_QDIO time"},
4397         {"tx do_QDIO count"},
4398 };
4399
4400 int qeth_core_get_stats_count(struct net_device *dev)
4401 {
4402         return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4403 }
4404 EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
4405
4406 void qeth_core_get_ethtool_stats(struct net_device *dev,
4407                 struct ethtool_stats *stats, u64 *data)
4408 {
4409         struct qeth_card *card = netdev_priv(dev);
4410         data[0] = card->stats.rx_packets -
4411                                 card->perf_stats.initial_rx_packets;
4412         data[1] = card->perf_stats.bufs_rec;
4413         data[2] = card->stats.tx_packets -
4414                                 card->perf_stats.initial_tx_packets;
4415         data[3] = card->perf_stats.bufs_sent;
4416         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4417                         - card->perf_stats.skbs_sent_pack;
4418         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4419         data[6] = card->perf_stats.skbs_sent_pack;
4420         data[7] = card->perf_stats.bufs_sent_pack;
4421         data[8] = card->perf_stats.sg_skbs_sent;
4422         data[9] = card->perf_stats.sg_frags_sent;
4423         data[10] = card->perf_stats.sg_skbs_rx;
4424         data[11] = card->perf_stats.sg_frags_rx;
4425         data[12] = card->perf_stats.sg_alloc_page_rx;
4426         data[13] = (card->perf_stats.large_send_bytes >> 10);
4427         data[14] = card->perf_stats.large_send_cnt;
4428         data[15] = card->perf_stats.sc_dp_p;
4429         data[16] = card->perf_stats.sc_p_dp;
4430         data[17] = QETH_LOW_WATERMARK_PACK;
4431         data[18] = QETH_HIGH_WATERMARK_PACK;
4432         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4433         data[20] = (card->qdio.no_out_queues > 1) ?
4434                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4435         data[21] = (card->qdio.no_out_queues > 2) ?
4436                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4437         data[22] = (card->qdio.no_out_queues > 3) ?
4438                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4439         data[23] = card->perf_stats.inbound_time;
4440         data[24] = card->perf_stats.inbound_cnt;
4441         data[25] = card->perf_stats.inbound_do_qdio_time;
4442         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4443         data[27] = card->perf_stats.outbound_handler_time;
4444         data[28] = card->perf_stats.outbound_handler_cnt;
4445         data[29] = card->perf_stats.outbound_time;
4446         data[30] = card->perf_stats.outbound_cnt;
4447         data[31] = card->perf_stats.outbound_do_qdio_time;
4448         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4449 }
4450 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4451
4452 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4453 {
4454         switch (stringset) {
4455         case ETH_SS_STATS:
4456                 memcpy(data, &qeth_ethtool_stats_keys,
4457                         sizeof(qeth_ethtool_stats_keys));
4458                 break;
4459         default:
4460                 WARN_ON(1);
4461                 break;
4462         }
4463 }
4464 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4465
4466 void qeth_core_get_drvinfo(struct net_device *dev,
4467                 struct ethtool_drvinfo *info)
4468 {
4469         struct qeth_card *card = netdev_priv(dev);
4470         if (card->options.layer2)
4471                 strcpy(info->driver, "qeth_l2");
4472         else
4473                 strcpy(info->driver, "qeth_l3");
4474
4475         strcpy(info->version, "1.0");
4476         strcpy(info->fw_version, card->info.mcl_level);
4477         sprintf(info->bus_info, "%s/%s/%s",
4478                         CARD_RDEV_ID(card),
4479                         CARD_WDEV_ID(card),
4480                         CARD_DDEV_ID(card));
4481 }
4482 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4483
4484 static int __init qeth_core_init(void)
4485 {
4486         int rc;
4487
4488         PRINT_INFO("loading core functions\n");
4489         INIT_LIST_HEAD(&qeth_core_card_list.list);
4490         rwlock_init(&qeth_core_card_list.rwlock);
4491
4492         rc = qeth_register_dbf_views();
4493         if (rc)
4494                 goto out_err;
4495         rc = ccw_driver_register(&qeth_ccw_driver);
4496         if (rc)
4497                 goto ccw_err;
4498         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4499         if (rc)
4500                 goto ccwgroup_err;
4501         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4502                                 &driver_attr_group);
4503         if (rc)
4504                 goto driver_err;
4505         qeth_core_root_dev = s390_root_dev_register("qeth");
4506         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4507         if (rc)
4508                 goto register_err;
4509         return 0;
4510
4511 register_err:
4512         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4513                            &driver_attr_group);
4514 driver_err:
4515         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4516 ccwgroup_err:
4517         ccw_driver_unregister(&qeth_ccw_driver);
4518 ccw_err:
4519         qeth_unregister_dbf_views();
4520 out_err:
4521         PRINT_ERR("Initialization failed with code %d\n", rc);
4522         return rc;
4523 }
4524
4525 static void __exit qeth_core_exit(void)
4526 {
4527         s390_root_dev_unregister(qeth_core_root_dev);
4528         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4529                            &driver_attr_group);
4530         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4531         ccw_driver_unregister(&qeth_ccw_driver);
4532         qeth_unregister_dbf_views();
4533         PRINT_INFO("core functions removed\n");
4534 }
4535
4536 module_init(qeth_core_init);
4537 module_exit(qeth_core_exit);
4538 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4539 MODULE_DESCRIPTION("qeth core functions");
4540 MODULE_LICENSE("GPL");