SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/s390/net/qeth_core_main.c

   1 /*
   2  *  drivers/s390/net/qeth_core_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/ip.h>
  20 #include <linux/tcp.h>
  21 #include <linux/mii.h>
  22 #include <linux/kthread.h>
  23
  24 #include <asm/ebcdic.h>
  25 #include <asm/io.h>
  26
  27 #include "qeth_core.h"
  28
  29 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  30         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  31         /*                   N  P  A    M  L  V                      H  */
  32         [QETH_DBF_SETUP] = {"qeth_setup",
  33                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  34         [QETH_DBF_QERR]  = {"qeth_qerr",
  35                                 2, 1,   8, 2, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_TRACE] = {"qeth_trace",
  37                                 4, 1,   8, 3, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_MSG]   = {"qeth_msg",
  39                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  40         [QETH_DBF_SENSE] = {"qeth_sense",
  41                                 2, 1,  64, 2, &debug_hex_ascii_view, NULL},
  42         [QETH_DBF_MISC]  = {"qeth_misc",
  43                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  44         [QETH_DBF_CTRL]  = {"qeth_control",
  45                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  46 };
  47 EXPORT_SYMBOL_GPL(qeth_dbf);
  48
  49 struct qeth_card_list_struct qeth_core_card_list;
  50 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  51 struct kmem_cache *qeth_core_header_cache;
  52 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  53
  54 static struct device *qeth_core_root_dev;
  55 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  56 static struct lock_class_key qdio_out_skb_queue_key;
  57
  58 static void qeth_send_control_data_cb(struct qeth_channel *,
  59                         struct qeth_cmd_buffer *);
  60 static int qeth_issue_next_read(struct qeth_card *);
  61 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  62 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  63 static void qeth_free_buffer_pool(struct qeth_card *);
  64 static int qeth_qdio_establish(struct qeth_card *);
  65
  66
  67 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  68                 struct qdio_buffer *buffer, int is_tso,
  69                 int *next_element_to_fill)
  70 {
  71         struct skb_frag_struct *frag;
  72         int fragno;
  73         unsigned long addr;
  74         int element, cnt, dlen;
  75
  76         fragno = skb_shinfo(skb)->nr_frags;
  77         element = *next_element_to_fill;
  78         dlen = 0;
  79
  80         if (is_tso)
  81                 buffer->element[element].flags =
  82                         SBAL_FLAGS_MIDDLE_FRAG;
  83         else
  84                 buffer->element[element].flags =
  85                         SBAL_FLAGS_FIRST_FRAG;
  86         dlen = skb->len - skb->data_len;
  87         if (dlen) {
  88                 buffer->element[element].addr = skb->data;
  89                 buffer->element[element].length = dlen;
  90                 element++;
  91         }
  92         for (cnt = 0; cnt < fragno; cnt++) {
  93                 frag = &skb_shinfo(skb)->frags[cnt];
  94                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  95                         frag->page_offset;
  96                 buffer->element[element].addr = (char *)addr;
  97                 buffer->element[element].length = frag->size;
  98                 if (cnt < (fragno - 1))
  99                         buffer->element[element].flags =
 100                                 SBAL_FLAGS_MIDDLE_FRAG;
 101                 else
 102                         buffer->element[element].flags =
 103                                 SBAL_FLAGS_LAST_FRAG;
 104                 element++;
 105         }
 106         *next_element_to_fill = element;
 107 }
 108
 109 static inline const char *qeth_get_cardname(struct qeth_card *card)
 110 {
 111         if (card->info.guestlan) {
 112                 switch (card->info.type) {
 113                 case QETH_CARD_TYPE_OSAE:
 114                         return " Guest LAN QDIO";
 115                 case QETH_CARD_TYPE_IQD:
 116                         return " Guest LAN Hiper";
 117                 default:
 118                         return " unknown";
 119                 }
 120         } else {
 121                 switch (card->info.type) {
 122                 case QETH_CARD_TYPE_OSAE:
 123                         return " OSD Express";
 124                 case QETH_CARD_TYPE_IQD:
 125                         return " HiperSockets";
 126                 case QETH_CARD_TYPE_OSN:
 127                         return " OSN QDIO";
 128                 default:
 129                         return " unknown";
 130                 }
 131         }
 132         return " n/a";
 133 }
 134
 135 /* max length to be returned: 14 */
 136 const char *qeth_get_cardname_short(struct qeth_card *card)
 137 {
 138         if (card->info.guestlan) {
 139                 switch (card->info.type) {
 140                 case QETH_CARD_TYPE_OSAE:
 141                         return "GuestLAN QDIO";
 142                 case QETH_CARD_TYPE_IQD:
 143                         return "GuestLAN Hiper";
 144                 default:
 145                         return "unknown";
 146                 }
 147         } else {
 148                 switch (card->info.type) {
 149                 case QETH_CARD_TYPE_OSAE:
 150                         switch (card->info.link_type) {
 151                         case QETH_LINK_TYPE_FAST_ETH:
 152                                 return "OSD_100";
 153                         case QETH_LINK_TYPE_HSTR:
 154                                 return "HSTR";
 155                         case QETH_LINK_TYPE_GBIT_ETH:
 156                                 return "OSD_1000";
 157                         case QETH_LINK_TYPE_10GBIT_ETH:
 158                                 return "OSD_10GIG";
 159                         case QETH_LINK_TYPE_LANE_ETH100:
 160                                 return "OSD_FE_LANE";
 161                         case QETH_LINK_TYPE_LANE_TR:
 162                                 return "OSD_TR_LANE";
 163                         case QETH_LINK_TYPE_LANE_ETH1000:
 164                                 return "OSD_GbE_LANE";
 165                         case QETH_LINK_TYPE_LANE:
 166                                 return "OSD_ATM_LANE";
 167                         default:
 168                                 return "OSD_Express";
 169                         }
 170                 case QETH_CARD_TYPE_IQD:
 171                         return "HiperSockets";
 172                 case QETH_CARD_TYPE_OSN:
 173                         return "OSN";
 174                 default:
 175                         return "unknown";
 176                 }
 177         }
 178         return "n/a";
 179 }
 180
 181 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 182                          int clear_start_mask)
 183 {
 184         unsigned long flags;
 185
 186         spin_lock_irqsave(&card->thread_mask_lock, flags);
 187         card->thread_allowed_mask = threads;
 188         if (clear_start_mask)
 189                 card->thread_start_mask &= threads;
 190         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 191         wake_up(&card->wait_q);
 192 }
 193 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 194
 195 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 196 {
 197         unsigned long flags;
 198         int rc = 0;
 199
 200         spin_lock_irqsave(&card->thread_mask_lock, flags);
 201         rc = (card->thread_running_mask & threads);
 202         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 203         return rc;
 204 }
 205 EXPORT_SYMBOL_GPL(qeth_threads_running);
 206
 207 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 208 {
 209         return wait_event_interruptible(card->wait_q,
 210                         qeth_threads_running(card, threads) == 0);
 211 }
 212 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 213
 214 void qeth_clear_working_pool_list(struct qeth_card *card)
 215 {
 216         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 217
 218         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 219         list_for_each_entry_safe(pool_entry, tmp,
 220                             &card->qdio.in_buf_pool.entry_list, list){
 221                         list_del(&pool_entry->list);
 222         }
 223 }
 224 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 225
 226 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 227 {
 228         struct qeth_buffer_pool_entry *pool_entry;
 229         void *ptr;
 230         int i, j;
 231
 232         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 233         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 234                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 235                 if (!pool_entry) {
 236                         qeth_free_buffer_pool(card);
 237                         return -ENOMEM;
 238                 }
 239                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 240                         ptr = (void *) __get_free_page(GFP_KERNEL);
 241                         if (!ptr) {
 242                                 while (j > 0)
 243                                         free_page((unsigned long)
 244                                                   pool_entry->elements[--j]);
 245                                 kfree(pool_entry);
 246                                 qeth_free_buffer_pool(card);
 247                                 return -ENOMEM;
 248                         }
 249                         pool_entry->elements[j] = ptr;
 250                 }
 251                 list_add(&pool_entry->init_list,
 252                          &card->qdio.init_pool.entry_list);
 253         }
 254         return 0;
 255 }
 256
 257 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 258 {
 259         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 260
 261         if ((card->state != CARD_STATE_DOWN) &&
 262             (card->state != CARD_STATE_RECOVER))
 263                 return -EPERM;
 264
 265         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 266         qeth_clear_working_pool_list(card);
 267         qeth_free_buffer_pool(card);
 268         card->qdio.in_buf_pool.buf_count = bufcnt;
 269         card->qdio.init_pool.buf_count = bufcnt;
 270         return qeth_alloc_buffer_pool(card);
 271 }
 272
 273 static int qeth_issue_next_read(struct qeth_card *card)
 274 {
 275         int rc;
 276         struct qeth_cmd_buffer *iob;
 277
 278         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 279         if (card->read.state != CH_STATE_UP)
 280                 return -EIO;
 281         iob = qeth_get_buffer(&card->read);
 282         if (!iob) {
 283                 dev_warn(&card->gdev->dev, "The qeth device driver "
 284                         "failed to recover an error on the device\n");
 285                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 286                         "available\n", dev_name(&card->gdev->dev));
 287                 return -ENOMEM;
 288         }
 289         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 290         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 291         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 292                               (addr_t) iob, 0, 0);
 293         if (rc) {
 294                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 295                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 296                 atomic_set(&card->read.irq_pending, 0);
 297                 qeth_schedule_recovery(card);
 298                 wake_up(&card->wait_q);
 299         }
 300         return rc;
 301 }
 302
 303 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 304 {
 305         struct qeth_reply *reply;
 306
 307         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 308         if (reply) {
 309                 atomic_set(&reply->refcnt, 1);
 310                 atomic_set(&reply->received, 0);
 311                 reply->card = card;
 312         };
 313         return reply;
 314 }
 315
 316 static void qeth_get_reply(struct qeth_reply *reply)
 317 {
 318         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 319         atomic_inc(&reply->refcnt);
 320 }
 321
 322 static void qeth_put_reply(struct qeth_reply *reply)
 323 {
 324         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 325         if (atomic_dec_and_test(&reply->refcnt))
 326                 kfree(reply);
 327 }
 328
 329 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 330                 struct qeth_card *card)
 331 {
 332         char *ipa_name;
 333         int com = cmd->hdr.command;
 334         ipa_name = qeth_get_ipa_cmd_name(com);
 335         if (rc)
 336                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 337                                 ipa_name, com, QETH_CARD_IFNAME(card),
 338                                         rc, qeth_get_ipa_msg(rc));
 339         else
 340                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 341                                 ipa_name, com, QETH_CARD_IFNAME(card));
 342 }
 343
 344 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 345                 struct qeth_cmd_buffer *iob)
 346 {
 347         struct qeth_ipa_cmd *cmd = NULL;
 348
 349         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 350         if (IS_IPA(iob->data)) {
 351                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 352                 if (IS_IPA_REPLY(cmd)) {
 353                         if (cmd->hdr.command < IPA_CMD_SETCCID ||
 354                             cmd->hdr.command > IPA_CMD_MODCCID)
 355                                 qeth_issue_ipa_msg(cmd,
 356                                                 cmd->hdr.return_code, card);
 357                         return cmd;
 358                 } else {
 359                         switch (cmd->hdr.command) {
 360                         case IPA_CMD_STOPLAN:
 361                                 dev_warn(&card->gdev->dev,
 362                                            "The link for interface %s on CHPID"
 363                                            " 0x%X failed\n",
 364                                            QETH_CARD_IFNAME(card),
 365                                            card->info.chpid);
 366                                 card->lan_online = 0;
 367                                 if (card->dev && netif_carrier_ok(card->dev))
 368                                         netif_carrier_off(card->dev);
 369                                 return NULL;
 370                         case IPA_CMD_STARTLAN:
 371                                 dev_info(&card->gdev->dev,
 372                                            "The link for %s on CHPID 0x%X has"
 373                                            " been restored\n",
 374                                            QETH_CARD_IFNAME(card),
 375                                            card->info.chpid);
 376                                 netif_carrier_on(card->dev);
 377                                 card->lan_online = 1;
 378                                 qeth_schedule_recovery(card);
 379                                 return NULL;
 380                         case IPA_CMD_MODCCID:
 381                                 return cmd;
 382                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 383                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 384                                 break;
 385                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 386                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 387                                 break;
 388                         default:
 389                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 390                                            "but not a reply!\n");
 391                                 break;
 392                         }
 393                 }
 394         }
 395         return cmd;
 396 }
 397
 398 void qeth_clear_ipacmd_list(struct qeth_card *card)
 399 {
 400         struct qeth_reply *reply, *r;
 401         unsigned long flags;
 402
 403         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 404
 405         spin_lock_irqsave(&card->lock, flags);
 406         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 407                 qeth_get_reply(reply);
 408                 reply->rc = -EIO;
 409                 atomic_inc(&reply->received);
 410                 list_del_init(&reply->list);
 411                 wake_up(&reply->wait_q);
 412                 qeth_put_reply(reply);
 413         }
 414         spin_unlock_irqrestore(&card->lock, flags);
 415 }
 416 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 417
 418 static int qeth_check_idx_response(unsigned char *buffer)
 419 {
 420         if (!buffer)
 421                 return 0;
 422
 423         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 424         if ((buffer[2] & 0xc0) == 0xc0) {
 425                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 426                            "with cause code 0x%02x%s\n",
 427                            buffer[4],
 428                            ((buffer[4] == 0x22) ?
 429                             " -- try another portname" : ""));
 430                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 431                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 432                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 433                 return -EIO;
 434         }
 435         return 0;
 436 }
 437
 438 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 439                 __u32 len)
 440 {
 441         struct qeth_card *card;
 442
 443         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 444         card = CARD_FROM_CDEV(channel->ccwdev);
 445         if (channel == &card->read)
 446                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 447         else
 448                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 449         channel->ccw.count = len;
 450         channel->ccw.cda = (__u32) __pa(iob);
 451 }
 452
 453 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 454 {
 455         __u8 index;
 456
 457         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 458         index = channel->io_buf_no;
 459         do {
 460                 if (channel->iob[index].state == BUF_STATE_FREE) {
 461                         channel->iob[index].state = BUF_STATE_LOCKED;
 462                         channel->io_buf_no = (channel->io_buf_no + 1) %
 463                                 QETH_CMD_BUFFER_NO;
 464                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 465                         return channel->iob + index;
 466                 }
 467                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 468         } while (index != channel->io_buf_no);
 469
 470         return NULL;
 471 }
 472
 473 void qeth_release_buffer(struct qeth_channel *channel,
 474                 struct qeth_cmd_buffer *iob)
 475 {
 476         unsigned long flags;
 477
 478         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 479         spin_lock_irqsave(&channel->iob_lock, flags);
 480         memset(iob->data, 0, QETH_BUFSIZE);
 481         iob->state = BUF_STATE_FREE;
 482         iob->callback = qeth_send_control_data_cb;
 483         iob->rc = 0;
 484         spin_unlock_irqrestore(&channel->iob_lock, flags);
 485 }
 486 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 487
 488 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 489 {
 490         struct qeth_cmd_buffer *buffer = NULL;
 491         unsigned long flags;
 492
 493         spin_lock_irqsave(&channel->iob_lock, flags);
 494         buffer = __qeth_get_buffer(channel);
 495         spin_unlock_irqrestore(&channel->iob_lock, flags);
 496         return buffer;
 497 }
 498
 499 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 500 {
 501         struct qeth_cmd_buffer *buffer;
 502         wait_event(channel->wait_q,
 503                    ((buffer = qeth_get_buffer(channel)) != NULL));
 504         return buffer;
 505 }
 506 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 507
 508 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 509 {
 510         int cnt;
 511
 512         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 513                 qeth_release_buffer(channel, &channel->iob[cnt]);
 514         channel->buf_no = 0;
 515         channel->io_buf_no = 0;
 516 }
 517 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 518
 519 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 520                   struct qeth_cmd_buffer *iob)
 521 {
 522         struct qeth_card *card;
 523         struct qeth_reply *reply, *r;
 524         struct qeth_ipa_cmd *cmd;
 525         unsigned long flags;
 526         int keep_reply;
 527
 528         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 529
 530         card = CARD_FROM_CDEV(channel->ccwdev);
 531         if (qeth_check_idx_response(iob->data)) {
 532                 qeth_clear_ipacmd_list(card);
 533                 if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6)
 534                         dev_err(&card->gdev->dev,
 535                                 "The qeth device is not configured "
 536                                 "for the OSI layer required by z/VM\n");
 537                 qeth_schedule_recovery(card);
 538                 goto out;
 539         }
 540
 541         cmd = qeth_check_ipa_data(card, iob);
 542         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 543                 goto out;
 544         /*in case of OSN : check if cmd is set */
 545         if (card->info.type == QETH_CARD_TYPE_OSN &&
 546             cmd &&
 547             cmd->hdr.command != IPA_CMD_STARTLAN &&
 548             card->osn_info.assist_cb != NULL) {
 549                 card->osn_info.assist_cb(card->dev, cmd);
 550                 goto out;
 551         }
 552
 553         spin_lock_irqsave(&card->lock, flags);
 554         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 555                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 556                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 557                         qeth_get_reply(reply);
 558                         list_del_init(&reply->list);
 559                         spin_unlock_irqrestore(&card->lock, flags);
 560                         keep_reply = 0;
 561                         if (reply->callback != NULL) {
 562                                 if (cmd) {
 563                                         reply->offset = (__u16)((char *)cmd -
 564                                                         (char *)iob->data);
 565                                         keep_reply = reply->callback(card,
 566                                                         reply,
 567                                                         (unsigned long)cmd);
 568                                 } else
 569                                         keep_reply = reply->callback(card,
 570                                                         reply,
 571                                                         (unsigned long)iob);
 572                         }
 573                         if (cmd)
 574                                 reply->rc = (u16) cmd->hdr.return_code;
 575                         else if (iob->rc)
 576                                 reply->rc = iob->rc;
 577                         if (keep_reply) {
 578                                 spin_lock_irqsave(&card->lock, flags);
 579                                 list_add_tail(&reply->list,
 580                                               &card->cmd_waiter_list);
 581                                 spin_unlock_irqrestore(&card->lock, flags);
 582                         } else {
 583                                 atomic_inc(&reply->received);
 584                                 wake_up(&reply->wait_q);
 585                         }
 586                         qeth_put_reply(reply);
 587                         goto out;
 588                 }
 589         }
 590         spin_unlock_irqrestore(&card->lock, flags);
 591 out:
 592         memcpy(&card->seqno.pdu_hdr_ack,
 593                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 594                 QETH_SEQ_NO_LENGTH);
 595         qeth_release_buffer(channel, iob);
 596 }
 597
 598 static int qeth_setup_channel(struct qeth_channel *channel)
 599 {
 600         int cnt;
 601
 602         QETH_DBF_TEXT(SETUP, 2, "setupch");
 603         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 604                 channel->iob[cnt].data = (char *)
 605                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 606                 if (channel->iob[cnt].data == NULL)
 607                         break;
 608                 channel->iob[cnt].state = BUF_STATE_FREE;
 609                 channel->iob[cnt].channel = channel;
 610                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 611                 channel->iob[cnt].rc = 0;
 612         }
 613         if (cnt < QETH_CMD_BUFFER_NO) {
 614                 while (cnt-- > 0)
 615                         kfree(channel->iob[cnt].data);
 616                 return -ENOMEM;
 617         }
 618         channel->buf_no = 0;
 619         channel->io_buf_no = 0;
 620         atomic_set(&channel->irq_pending, 0);
 621         spin_lock_init(&channel->iob_lock);
 622
 623         init_waitqueue_head(&channel->wait_q);
 624         return 0;
 625 }
 626
 627 static int qeth_set_thread_start_bit(struct qeth_card *card,
 628                 unsigned long thread)
 629 {
 630         unsigned long flags;
 631
 632         spin_lock_irqsave(&card->thread_mask_lock, flags);
 633         if (!(card->thread_allowed_mask & thread) ||
 634               (card->thread_start_mask & thread)) {
 635                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 636                 return -EPERM;
 637         }
 638         card->thread_start_mask |= thread;
 639         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 640         return 0;
 641 }
 642
 643 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 644 {
 645         unsigned long flags;
 646
 647         spin_lock_irqsave(&card->thread_mask_lock, flags);
 648         card->thread_start_mask &= ~thread;
 649         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 650         wake_up(&card->wait_q);
 651 }
 652 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 653
 654 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 655 {
 656         unsigned long flags;
 657
 658         spin_lock_irqsave(&card->thread_mask_lock, flags);
 659         card->thread_running_mask &= ~thread;
 660         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 661         wake_up(&card->wait_q);
 662 }
 663 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 664
 665 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 666 {
 667         unsigned long flags;
 668         int rc = 0;
 669
 670         spin_lock_irqsave(&card->thread_mask_lock, flags);
 671         if (card->thread_start_mask & thread) {
 672                 if ((card->thread_allowed_mask & thread) &&
 673                     !(card->thread_running_mask & thread)) {
 674                         rc = 1;
 675                         card->thread_start_mask &= ~thread;
 676                         card->thread_running_mask |= thread;
 677                 } else
 678                         rc = -EPERM;
 679         }
 680         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 681         return rc;
 682 }
 683
 684 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 685 {
 686         int rc = 0;
 687
 688         wait_event(card->wait_q,
 689                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 690         return rc;
 691 }
 692 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 693
 694 void qeth_schedule_recovery(struct qeth_card *card)
 695 {
 696         QETH_DBF_TEXT(TRACE, 2, "startrec");
 697         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 698                 schedule_work(&card->kernel_thread_starter);
 699 }
 700 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 701
 702 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 703 {
 704         int dstat, cstat;
 705         char *sense;
 706
 707         sense = (char *) irb->ecw;
 708         cstat = irb->scsw.cmd.cstat;
 709         dstat = irb->scsw.cmd.dstat;
 710
 711         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 712                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 713                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 714                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 715                 dev_warn(&cdev->dev, "The qeth device driver "
 716                         "failed to recover an error on the device\n");
 717                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
 718                         dev_name(&cdev->dev), dstat, cstat);
 719                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 720                                 16, 1, irb, 64, 1);
 721                 return 1;
 722         }
 723
 724         if (dstat & DEV_STAT_UNIT_CHECK) {
 725                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 726                     SENSE_RESETTING_EVENT_FLAG) {
 727                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 728                         return 1;
 729                 }
 730                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 731                     SENSE_COMMAND_REJECT_FLAG) {
 732                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 733                         return 1;
 734                 }
 735                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 736                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 737                         return 1;
 738                 }
 739                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 740                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 741                         return 0;
 742                 }
 743                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 744                         return 1;
 745         }
 746         return 0;
 747 }
 748
 749 static long __qeth_check_irb_error(struct ccw_device *cdev,
 750                 unsigned long intparm, struct irb *irb)
 751 {
 752         if (!IS_ERR(irb))
 753                 return 0;
 754
 755         switch (PTR_ERR(irb)) {
 756         case -EIO:
 757                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 758                         dev_name(&cdev->dev));
 759                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 760                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 761                 break;
 762         case -ETIMEDOUT:
 763                 dev_warn(&cdev->dev, "A hardware operation timed out"
 764                         " on the device\n");
 765                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 766                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
 767                 if (intparm == QETH_RCD_PARM) {
 768                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 769
 770                         if (card && (card->data.ccwdev == cdev)) {
 771                                 card->data.state = CH_STATE_DOWN;
 772                                 wake_up(&card->wait_q);
 773                         }
 774                 }
 775                 break;
 776         default:
 777                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 778                         dev_name(&cdev->dev), PTR_ERR(irb));
 779                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 780                 QETH_DBF_TEXT(TRACE, 2, "  rc???");
 781         }
 782         return PTR_ERR(irb);
 783 }
 784
 785 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 786                 struct irb *irb)
 787 {
 788         int rc;
 789         int cstat, dstat;
 790         struct qeth_cmd_buffer *buffer;
 791         struct qeth_channel *channel;
 792         struct qeth_card *card;
 793         struct qeth_cmd_buffer *iob;
 794         __u8 index;
 795
 796         QETH_DBF_TEXT(TRACE, 5, "irq");
 797
 798         if (__qeth_check_irb_error(cdev, intparm, irb))
 799                 return;
 800         cstat = irb->scsw.cmd.cstat;
 801         dstat = irb->scsw.cmd.dstat;
 802
 803         card = CARD_FROM_CDEV(cdev);
 804         if (!card)
 805                 return;
 806
 807         if (card->read.ccwdev == cdev) {
 808                 channel = &card->read;
 809                 QETH_DBF_TEXT(TRACE, 5, "read");
 810         } else if (card->write.ccwdev == cdev) {
 811                 channel = &card->write;
 812                 QETH_DBF_TEXT(TRACE, 5, "write");
 813         } else {
 814                 channel = &card->data;
 815                 QETH_DBF_TEXT(TRACE, 5, "data");
 816         }
 817         atomic_set(&channel->irq_pending, 0);
 818
 819         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 820                 channel->state = CH_STATE_STOPPED;
 821
 822         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 823                 channel->state = CH_STATE_HALTED;
 824
 825         /*let's wake up immediately on data channel*/
 826         if ((channel == &card->data) && (intparm != 0) &&
 827             (intparm != QETH_RCD_PARM))
 828                 goto out;
 829
 830         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 831                 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
 832                 /* we don't have to handle this further */
 833                 intparm = 0;
 834         }
 835         if (intparm == QETH_HALT_CHANNEL_PARM) {
 836                 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
 837                 /* we don't have to handle this further */
 838                 intparm = 0;
 839         }
 840         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 841             (dstat & DEV_STAT_UNIT_CHECK) ||
 842             (cstat)) {
 843                 if (irb->esw.esw0.erw.cons) {
 844                         dev_warn(&channel->ccwdev->dev,
 845                                 "The qeth device driver failed to recover "
 846                                 "an error on the device\n");
 847                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 848                                 "0x%X dstat 0x%X\n",
 849                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 850                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 851                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 852                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 853                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 854                 }
 855                 if (intparm == QETH_RCD_PARM) {
 856                         channel->state = CH_STATE_DOWN;
 857                         goto out;
 858                 }
 859                 rc = qeth_get_problem(cdev, irb);
 860                 if (rc) {
 861                         qeth_clear_ipacmd_list(card);
 862                         qeth_schedule_recovery(card);
 863                         goto out;
 864                 }
 865         }
 866
 867         if (intparm == QETH_RCD_PARM) {
 868                 channel->state = CH_STATE_RCD_DONE;
 869                 goto out;
 870         }
 871         if (intparm) {
 872                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 873                 buffer->state = BUF_STATE_PROCESSED;
 874         }
 875         if (channel == &card->data)
 876                 return;
 877         if (channel == &card->read &&
 878             channel->state == CH_STATE_UP)
 879                 qeth_issue_next_read(card);
 880
 881         iob = channel->iob;
 882         index = channel->buf_no;
 883         while (iob[index].state == BUF_STATE_PROCESSED) {
 884                 if (iob[index].callback != NULL)
 885                         iob[index].callback(channel, iob + index);
 886
 887                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 888         }
 889         channel->buf_no = index;
 890 out:
 891         wake_up(&card->wait_q);
 892         return;
 893 }
 894
 895 static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 896                  struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb)
 897 {
 898         int i;
 899         struct sk_buff *skb;
 900
 901         /* is PCI flag set on buffer? */
 902         if (buf->buffer->element[0].flags & 0x40)
 903                 atomic_dec(&queue->set_pci_flags_count);
 904
 905         if (!qeth_skip_skb) {
 906                 skb = skb_dequeue(&buf->skb_list);
 907                 while (skb) {
 908                         atomic_dec(&skb->users);
 909                         dev_kfree_skb_any(skb);
 910                         skb = skb_dequeue(&buf->skb_list);
 911                 }
 912         }
 913         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 914                 if (buf->buffer->element[i].addr && buf->is_header[i])
 915                         kmem_cache_free(qeth_core_header_cache,
 916                                 buf->buffer->element[i].addr);
 917                 buf->is_header[i] = 0;
 918                 buf->buffer->element[i].length = 0;
 919                 buf->buffer->element[i].addr = NULL;
 920                 buf->buffer->element[i].flags = 0;
 921         }
 922         buf->buffer->element[15].flags = 0;
 923         buf->next_element_to_fill = 0;
 924         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 925 }
 926
 927 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 928                 struct qeth_qdio_out_buffer *buf)
 929 {
 930         __qeth_clear_output_buffer(queue, buf, 0);
 931 }
 932
 933 void qeth_clear_qdio_buffers(struct qeth_card *card)
 934 {
 935         int i, j;
 936
 937         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 938         /* clear outbound buffers to free skbs */
 939         for (i = 0; i < card->qdio.no_out_queues; ++i)
 940                 if (card->qdio.out_qs[i]) {
 941                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 942                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 943                                                 &card->qdio.out_qs[i]->bufs[j]);
 944                 }
 945 }
 946 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 947
 948 static void qeth_free_buffer_pool(struct qeth_card *card)
 949 {
 950         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 951         int i = 0;
 952         QETH_DBF_TEXT(TRACE, 5, "freepool");
 953         list_for_each_entry_safe(pool_entry, tmp,
 954                                  &card->qdio.init_pool.entry_list, init_list){
 955                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 956                         free_page((unsigned long)pool_entry->elements[i]);
 957                 list_del(&pool_entry->init_list);
 958                 kfree(pool_entry);
 959         }
 960 }
 961
 962 static void qeth_free_qdio_buffers(struct qeth_card *card)
 963 {
 964         int i, j;
 965
 966         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
 967         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 968                 QETH_QDIO_UNINITIALIZED)
 969                 return;
 970         kfree(card->qdio.in_q);
 971         card->qdio.in_q = NULL;
 972         /* inbound buffer pool */
 973         qeth_free_buffer_pool(card);
 974         /* free outbound qdio_qs */
 975         if (card->qdio.out_qs) {
 976                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 977                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 978                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 979                                                 &card->qdio.out_qs[i]->bufs[j]);
 980                         kfree(card->qdio.out_qs[i]);
 981                 }
 982                 kfree(card->qdio.out_qs);
 983                 card->qdio.out_qs = NULL;
 984         }
 985 }
 986
 987 static void qeth_clean_channel(struct qeth_channel *channel)
 988 {
 989         int cnt;
 990
 991         QETH_DBF_TEXT(SETUP, 2, "freech");
 992         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 993                 kfree(channel->iob[cnt].data);
 994 }
 995
 996 static int qeth_is_1920_device(struct qeth_card *card)
 997 {
 998         int single_queue = 0;
 999         struct ccw_device *ccwdev;
1000         struct channelPath_dsc {
1001                 u8 flags;
1002                 u8 lsn;
1003                 u8 desc;
1004                 u8 chpid;
1005                 u8 swla;
1006                 u8 zeroes;
1007                 u8 chla;
1008                 u8 chpp;
1009         } *chp_dsc;
1010
1011         QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1012
1013         ccwdev = card->data.ccwdev;
1014         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1015         if (chp_dsc != NULL) {
1016                 /* CHPP field bit 6 == 1 -> single queue */
1017                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1018                 kfree(chp_dsc);
1019         }
1020         QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1021         return single_queue;
1022 }
1023
1024 static void qeth_init_qdio_info(struct qeth_card *card)
1025 {
1026         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1027         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1028         /* inbound */
1029         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1030         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1031         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1032         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1033         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1034 }
1035
1036 static void qeth_set_intial_options(struct qeth_card *card)
1037 {
1038         card->options.route4.type = NO_ROUTER;
1039         card->options.route6.type = NO_ROUTER;
1040         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1041         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1042         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1043         card->options.fake_broadcast = 0;
1044         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1045         card->options.performance_stats = 0;
1046         card->options.rx_sg_cb = QETH_RX_SG_CB;
1047         card->options.isolation = ISOLATION_MODE_NONE;
1048 }
1049
1050 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1051 {
1052         unsigned long flags;
1053         int rc = 0;
1054
1055         spin_lock_irqsave(&card->thread_mask_lock, flags);
1056         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1057                         (u8) card->thread_start_mask,
1058                         (u8) card->thread_allowed_mask,
1059                         (u8) card->thread_running_mask);
1060         rc = (card->thread_start_mask & thread);
1061         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1062         return rc;
1063 }
1064
1065 static void qeth_start_kernel_thread(struct work_struct *work)
1066 {
1067         struct qeth_card *card = container_of(work, struct qeth_card,
1068                                         kernel_thread_starter);
1069         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1070
1071         if (card->read.state != CH_STATE_UP &&
1072             card->write.state != CH_STATE_UP)
1073                 return;
1074         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1075                 kthread_run(card->discipline.recover, (void *) card,
1076                                 "qeth_recover");
1077 }
1078
1079 static int qeth_setup_card(struct qeth_card *card)
1080 {
1081
1082         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1083         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1084
1085         card->read.state  = CH_STATE_DOWN;
1086         card->write.state = CH_STATE_DOWN;
1087         card->data.state  = CH_STATE_DOWN;
1088         card->state = CARD_STATE_DOWN;
1089         card->lan_online = 0;
1090         card->use_hard_stop = 0;
1091         card->dev = NULL;
1092         spin_lock_init(&card->vlanlock);
1093         spin_lock_init(&card->mclock);
1094         card->vlangrp = NULL;
1095         spin_lock_init(&card->lock);
1096         spin_lock_init(&card->ip_lock);
1097         spin_lock_init(&card->thread_mask_lock);
1098         card->thread_start_mask = 0;
1099         card->thread_allowed_mask = 0;
1100         card->thread_running_mask = 0;
1101         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1102         INIT_LIST_HEAD(&card->ip_list);
1103         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1104         if (!card->ip_tbd_list) {
1105                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1106                 return -ENOMEM;
1107         }
1108         INIT_LIST_HEAD(card->ip_tbd_list);
1109         INIT_LIST_HEAD(&card->cmd_waiter_list);
1110         init_waitqueue_head(&card->wait_q);
1111         /* intial options */
1112         qeth_set_intial_options(card);
1113         /* IP address takeover */
1114         INIT_LIST_HEAD(&card->ipato.entries);
1115         card->ipato.enabled = 0;
1116         card->ipato.invert4 = 0;
1117         card->ipato.invert6 = 0;
1118         if (card->info.type == QETH_CARD_TYPE_IQD)
1119                 card->options.checksum_type = NO_CHECKSUMMING;
1120         /* init QDIO stuff */
1121         qeth_init_qdio_info(card);
1122         return 0;
1123 }
1124
1125 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1126 {
1127         struct qeth_card *card = container_of(slr, struct qeth_card,
1128                                         qeth_service_level);
1129         if (card->info.mcl_level[0])
1130                 seq_printf(m, "qeth: %s firmware level %s\n",
1131                         CARD_BUS_ID(card), card->info.mcl_level);
1132 }
1133
1134 static struct qeth_card *qeth_alloc_card(void)
1135 {
1136         struct qeth_card *card;
1137
1138         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1139         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1140         if (!card)
1141                 return NULL;
1142         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1143         if (qeth_setup_channel(&card->read)) {
1144                 kfree(card);
1145                 return NULL;
1146         }
1147         if (qeth_setup_channel(&card->write)) {
1148                 qeth_clean_channel(&card->read);
1149                 kfree(card);
1150                 return NULL;
1151         }
1152         card->options.layer2 = -1;
1153         card->qeth_service_level.seq_print = qeth_core_sl_print;
1154         register_service_level(&card->qeth_service_level);
1155         return card;
1156 }
1157
1158 static int qeth_determine_card_type(struct qeth_card *card)
1159 {
1160         int i = 0;
1161
1162         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1163
1164         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1165         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1166         while (known_devices[i][4]) {
1167                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1168                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1169                         card->info.type = known_devices[i][4];
1170                         card->qdio.no_out_queues = known_devices[i][8];
1171                         card->info.is_multicast_different = known_devices[i][9];
1172                         if (qeth_is_1920_device(card)) {
1173                                 dev_info(&card->gdev->dev,
1174                                         "Priority Queueing not supported\n");
1175                                 card->qdio.no_out_queues = 1;
1176                                 card->qdio.default_out_queue = 0;
1177                         }
1178                         return 0;
1179                 }
1180                 i++;
1181         }
1182         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1183         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1184                 "unknown type\n");
1185         return -ENOENT;
1186 }
1187
1188 static int qeth_clear_channel(struct qeth_channel *channel)
1189 {
1190         unsigned long flags;
1191         struct qeth_card *card;
1192         int rc;
1193
1194         QETH_DBF_TEXT(TRACE, 3, "clearch");
1195         card = CARD_FROM_CDEV(channel->ccwdev);
1196         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1197         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1198         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1199
1200         if (rc)
1201                 return rc;
1202         rc = wait_event_interruptible_timeout(card->wait_q,
1203                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1204         if (rc == -ERESTARTSYS)
1205                 return rc;
1206         if (channel->state != CH_STATE_STOPPED)
1207                 return -ETIME;
1208         channel->state = CH_STATE_DOWN;
1209         return 0;
1210 }
1211
1212 static int qeth_halt_channel(struct qeth_channel *channel)
1213 {
1214         unsigned long flags;
1215         struct qeth_card *card;
1216         int rc;
1217
1218         QETH_DBF_TEXT(TRACE, 3, "haltch");
1219         card = CARD_FROM_CDEV(channel->ccwdev);
1220         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1221         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1222         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1223
1224         if (rc)
1225                 return rc;
1226         rc = wait_event_interruptible_timeout(card->wait_q,
1227                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1228         if (rc == -ERESTARTSYS)
1229                 return rc;
1230         if (channel->state != CH_STATE_HALTED)
1231                 return -ETIME;
1232         return 0;
1233 }
1234
1235 static int qeth_halt_channels(struct qeth_card *card)
1236 {
1237         int rc1 = 0, rc2 = 0, rc3 = 0;
1238
1239         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1240         rc1 = qeth_halt_channel(&card->read);
1241         rc2 = qeth_halt_channel(&card->write);
1242         rc3 = qeth_halt_channel(&card->data);
1243         if (rc1)
1244                 return rc1;
1245         if (rc2)
1246                 return rc2;
1247         return rc3;
1248 }
1249
1250 static int qeth_clear_channels(struct qeth_card *card)
1251 {
1252         int rc1 = 0, rc2 = 0, rc3 = 0;
1253
1254         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1255         rc1 = qeth_clear_channel(&card->read);
1256         rc2 = qeth_clear_channel(&card->write);
1257         rc3 = qeth_clear_channel(&card->data);
1258         if (rc1)
1259                 return rc1;
1260         if (rc2)
1261                 return rc2;
1262         return rc3;
1263 }
1264
1265 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1266 {
1267         int rc = 0;
1268
1269         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1270         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1271
1272         if (halt)
1273                 rc = qeth_halt_channels(card);
1274         if (rc)
1275                 return rc;
1276         return qeth_clear_channels(card);
1277 }
1278
1279 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1280 {
1281         int rc = 0;
1282
1283         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1284         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1285                 QETH_QDIO_CLEANING)) {
1286         case QETH_QDIO_ESTABLISHED:
1287                 if (card->info.type == QETH_CARD_TYPE_IQD)
1288                         rc = qdio_cleanup(CARD_DDEV(card),
1289                                 QDIO_FLAG_CLEANUP_USING_HALT);
1290                 else
1291                         rc = qdio_cleanup(CARD_DDEV(card),
1292                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1293                 if (rc)
1294                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1295                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1296                 break;
1297         case QETH_QDIO_CLEANING:
1298                 return rc;
1299         default:
1300                 break;
1301         }
1302         rc = qeth_clear_halt_card(card, use_halt);
1303         if (rc)
1304                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1305         card->state = CARD_STATE_DOWN;
1306         return rc;
1307 }
1308 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1309
1310 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1311                                int *length)
1312 {
1313         struct ciw *ciw;
1314         char *rcd_buf;
1315         int ret;
1316         struct qeth_channel *channel = &card->data;
1317         unsigned long flags;
1318
1319         /*
1320          * scan for RCD command in extended SenseID data
1321          */
1322         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1323         if (!ciw || ciw->cmd == 0)
1324                 return -EOPNOTSUPP;
1325         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1326         if (!rcd_buf)
1327                 return -ENOMEM;
1328
1329         channel->ccw.cmd_code = ciw->cmd;
1330         channel->ccw.cda = (__u32) __pa(rcd_buf);
1331         channel->ccw.count = ciw->count;
1332         channel->ccw.flags = CCW_FLAG_SLI;
1333         channel->state = CH_STATE_RCD;
1334         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1335         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1336                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1337                                        QETH_RCD_TIMEOUT);
1338         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1339         if (!ret)
1340                 wait_event(card->wait_q,
1341                            (channel->state == CH_STATE_RCD_DONE ||
1342                             channel->state == CH_STATE_DOWN));
1343         if (channel->state == CH_STATE_DOWN)
1344                 ret = -EIO;
1345         else
1346                 channel->state = CH_STATE_DOWN;
1347         if (ret) {
1348                 kfree(rcd_buf);
1349                 *buffer = NULL;
1350                 *length = 0;
1351         } else {
1352                 *length = ciw->count;
1353                 *buffer = rcd_buf;
1354         }
1355         return ret;
1356 }
1357
1358 static int qeth_get_unitaddr(struct qeth_card *card)
1359 {
1360         int length;
1361         char *prcd;
1362         int rc;
1363
1364         QETH_DBF_TEXT(SETUP, 2, "getunit");
1365         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1366         if (rc) {
1367                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
1368                         dev_name(&card->gdev->dev), rc);
1369                 return rc;
1370         }
1371         card->info.chpid = prcd[30];
1372         card->info.unit_addr2 = prcd[31];
1373         card->info.cula = prcd[63];
1374         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1375                                (prcd[0x11] == _ascebc['M']));
1376         kfree(prcd);
1377         return 0;
1378 }
1379
1380 static void qeth_init_tokens(struct qeth_card *card)
1381 {
1382         card->token.issuer_rm_w = 0x00010103UL;
1383         card->token.cm_filter_w = 0x00010108UL;
1384         card->token.cm_connection_w = 0x0001010aUL;
1385         card->token.ulp_filter_w = 0x0001010bUL;
1386         card->token.ulp_connection_w = 0x0001010dUL;
1387 }
1388
1389 static void qeth_init_func_level(struct qeth_card *card)
1390 {
1391         if (card->ipato.enabled) {
1392                 if (card->info.type == QETH_CARD_TYPE_IQD)
1393                                 card->info.func_level =
1394                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1395                 else
1396                                 card->info.func_level =
1397                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1398         } else {
1399                 if (card->info.type == QETH_CARD_TYPE_IQD)
1400                 /*FIXME:why do we have same values for  dis and ena for
1401                   osae??? */
1402                         card->info.func_level =
1403                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1404                 else
1405                         card->info.func_level =
1406                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1407         }
1408 }
1409
1410 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1411                 void (*idx_reply_cb)(struct qeth_channel *,
1412                         struct qeth_cmd_buffer *))
1413 {
1414         struct qeth_cmd_buffer *iob;
1415         unsigned long flags;
1416         int rc;
1417         struct qeth_card *card;
1418
1419         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1420         card = CARD_FROM_CDEV(channel->ccwdev);
1421         iob = qeth_get_buffer(channel);
1422         iob->callback = idx_reply_cb;
1423         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1424         channel->ccw.count = QETH_BUFSIZE;
1425         channel->ccw.cda = (__u32) __pa(iob->data);
1426
1427         wait_event(card->wait_q,
1428                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1429         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1430         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1431         rc = ccw_device_start(channel->ccwdev,
1432                               &channel->ccw, (addr_t) iob, 0, 0);
1433         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1434
1435         if (rc) {
1436                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1437                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1438                 atomic_set(&channel->irq_pending, 0);
1439                 wake_up(&card->wait_q);
1440                 return rc;
1441         }
1442         rc = wait_event_interruptible_timeout(card->wait_q,
1443                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1444         if (rc == -ERESTARTSYS)
1445                 return rc;
1446         if (channel->state != CH_STATE_UP) {
1447                 rc = -ETIME;
1448                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1449                 qeth_clear_cmd_buffers(channel);
1450         } else
1451                 rc = 0;
1452         return rc;
1453 }
1454
1455 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1456                 void (*idx_reply_cb)(struct qeth_channel *,
1457                         struct qeth_cmd_buffer *))
1458 {
1459         struct qeth_card *card;
1460         struct qeth_cmd_buffer *iob;
1461         unsigned long flags;
1462         __u16 temp;
1463         __u8 tmp;
1464         int rc;
1465         struct ccw_dev_id temp_devid;
1466
1467         card = CARD_FROM_CDEV(channel->ccwdev);
1468
1469         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1470
1471         iob = qeth_get_buffer(channel);
1472         iob->callback = idx_reply_cb;
1473         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1474         channel->ccw.count = IDX_ACTIVATE_SIZE;
1475         channel->ccw.cda = (__u32) __pa(iob->data);
1476         if (channel == &card->write) {
1477                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1478                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1479                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1480                 card->seqno.trans_hdr++;
1481         } else {
1482                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1483                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1484                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1485         }
1486         tmp = ((__u8)card->info.portno) | 0x80;
1487         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1488         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1489                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1490         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1491                &card->info.func_level, sizeof(__u16));
1492         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1493         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1494         temp = (card->info.cula << 8) + card->info.unit_addr2;
1495         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1496
1497         wait_event(card->wait_q,
1498                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1499         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1500         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1501         rc = ccw_device_start(channel->ccwdev,
1502                               &channel->ccw, (addr_t) iob, 0, 0);
1503         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1504
1505         if (rc) {
1506                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1507                         rc);
1508                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1509                 atomic_set(&channel->irq_pending, 0);
1510                 wake_up(&card->wait_q);
1511                 return rc;
1512         }
1513         rc = wait_event_interruptible_timeout(card->wait_q,
1514                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1515         if (rc == -ERESTARTSYS)
1516                 return rc;
1517         if (channel->state != CH_STATE_ACTIVATING) {
1518                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1519                         " failed to recover an error on the device\n");
1520                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1521                         dev_name(&channel->ccwdev->dev));
1522                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1523                 qeth_clear_cmd_buffers(channel);
1524                 return -ETIME;
1525         }
1526         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1527 }
1528
1529 static int qeth_peer_func_level(int level)
1530 {
1531         if ((level & 0xff) == 8)
1532                 return (level & 0xff) + 0x400;
1533         if (((level >> 8) & 3) == 1)
1534                 return (level & 0xff) + 0x200;
1535         return level;
1536 }
1537
1538 static void qeth_idx_write_cb(struct qeth_channel *channel,
1539                 struct qeth_cmd_buffer *iob)
1540 {
1541         struct qeth_card *card;
1542         __u16 temp;
1543
1544         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1545
1546         if (channel->state == CH_STATE_DOWN) {
1547                 channel->state = CH_STATE_ACTIVATING;
1548                 goto out;
1549         }
1550         card = CARD_FROM_CDEV(channel->ccwdev);
1551
1552         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1553                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1554                         dev_err(&card->write.ccwdev->dev,
1555                                 "The adapter is used exclusively by another "
1556                                 "host\n");
1557                 else
1558                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1559                                 " negative reply\n",
1560                                 dev_name(&card->write.ccwdev->dev));
1561                 goto out;
1562         }
1563         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1564         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1565                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1566                         "function level mismatch (sent: 0x%x, received: "
1567                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1568                         card->info.func_level, temp);
1569                 goto out;
1570         }
1571         channel->state = CH_STATE_UP;
1572 out:
1573         qeth_release_buffer(channel, iob);
1574 }
1575
1576 static void qeth_idx_read_cb(struct qeth_channel *channel,
1577                 struct qeth_cmd_buffer *iob)
1578 {
1579         struct qeth_card *card;
1580         __u16 temp;
1581
1582         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1583         if (channel->state == CH_STATE_DOWN) {
1584                 channel->state = CH_STATE_ACTIVATING;
1585                 goto out;
1586         }
1587
1588         card = CARD_FROM_CDEV(channel->ccwdev);
1589         if (qeth_check_idx_response(iob->data))
1590                         goto out;
1591
1592         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1593                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1594                         dev_err(&card->write.ccwdev->dev,
1595                                 "The adapter is used exclusively by another "
1596                                 "host\n");
1597                 else
1598                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1599                                 " negative reply\n",
1600                                 dev_name(&card->read.ccwdev->dev));
1601                 goto out;
1602         }
1603
1604 /**
1605  * temporary fix for microcode bug
1606  * to revert it,replace OR by AND
1607  */
1608         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1609              (card->info.type == QETH_CARD_TYPE_OSAE))
1610                 card->info.portname_required = 1;
1611
1612         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1613         if (temp != qeth_peer_func_level(card->info.func_level)) {
1614                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1615                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1616                         dev_name(&card->read.ccwdev->dev),
1617                         card->info.func_level, temp);
1618                 goto out;
1619         }
1620         memcpy(&card->token.issuer_rm_r,
1621                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1622                QETH_MPC_TOKEN_LENGTH);
1623         memcpy(&card->info.mcl_level[0],
1624                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1625         channel->state = CH_STATE_UP;
1626 out:
1627         qeth_release_buffer(channel, iob);
1628 }
1629
1630 void qeth_prepare_control_data(struct qeth_card *card, int len,
1631                 struct qeth_cmd_buffer *iob)
1632 {
1633         qeth_setup_ccw(&card->write, iob->data, len);
1634         iob->callback = qeth_release_buffer;
1635
1636         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1637                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1638         card->seqno.trans_hdr++;
1639         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1640                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1641         card->seqno.pdu_hdr++;
1642         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1643                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1644         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1645 }
1646 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1647
1648 int qeth_send_control_data(struct qeth_card *card, int len,
1649                 struct qeth_cmd_buffer *iob,
1650                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1651                         unsigned long),
1652                 void *reply_param)
1653 {
1654         int rc;
1655         unsigned long flags;
1656         struct qeth_reply *reply = NULL;
1657         unsigned long timeout, event_timeout;
1658         struct qeth_ipa_cmd *cmd;
1659
1660         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1661
1662         reply = qeth_alloc_reply(card);
1663         if (!reply) {
1664                 return -ENOMEM;
1665         }
1666         reply->callback = reply_cb;
1667         reply->param = reply_param;
1668         if (card->state == CARD_STATE_DOWN)
1669                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1670         else
1671                 reply->seqno = card->seqno.ipa++;
1672         init_waitqueue_head(&reply->wait_q);
1673         spin_lock_irqsave(&card->lock, flags);
1674         list_add_tail(&reply->list, &card->cmd_waiter_list);
1675         spin_unlock_irqrestore(&card->lock, flags);
1676         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1677
1678         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1679         qeth_prepare_control_data(card, len, iob);
1680
1681         if (IS_IPA(iob->data))
1682                 event_timeout = QETH_IPA_TIMEOUT;
1683         else
1684                 event_timeout = QETH_TIMEOUT;
1685         timeout = jiffies + event_timeout;
1686
1687         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1688         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1689         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1690                               (addr_t) iob, 0, 0);
1691         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1692         if (rc) {
1693                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1694                         "ccw_device_start rc = %i\n",
1695                         dev_name(&card->write.ccwdev->dev), rc);
1696                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1697                 spin_lock_irqsave(&card->lock, flags);
1698                 list_del_init(&reply->list);
1699                 qeth_put_reply(reply);
1700                 spin_unlock_irqrestore(&card->lock, flags);
1701                 qeth_release_buffer(iob->channel, iob);
1702                 atomic_set(&card->write.irq_pending, 0);
1703                 wake_up(&card->wait_q);
1704                 return rc;
1705         }
1706
1707         /* we have only one long running ipassist, since we can ensure
1708            process context of this command we can sleep */
1709         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1710         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1711             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1712                 if (!wait_event_timeout(reply->wait_q,
1713                     atomic_read(&reply->received), event_timeout))
1714                         goto time_err;
1715         } else {
1716                 while (!atomic_read(&reply->received)) {
1717                         if (time_after(jiffies, timeout))
1718                                 goto time_err;
1719                         cpu_relax();
1720                 };
1721         }
1722
1723         rc = reply->rc;
1724         qeth_put_reply(reply);
1725         return rc;
1726
1727 time_err:
1728         spin_lock_irqsave(&reply->card->lock, flags);
1729         list_del_init(&reply->list);
1730         spin_unlock_irqrestore(&reply->card->lock, flags);
1731         reply->rc = -ETIME;
1732         atomic_inc(&reply->received);
1733         wake_up(&reply->wait_q);
1734         rc = reply->rc;
1735         qeth_put_reply(reply);
1736         return rc;
1737 }
1738 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1739
1740 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1741                 unsigned long data)
1742 {
1743         struct qeth_cmd_buffer *iob;
1744
1745         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1746
1747         iob = (struct qeth_cmd_buffer *) data;
1748         memcpy(&card->token.cm_filter_r,
1749                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1750                QETH_MPC_TOKEN_LENGTH);
1751         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1752         return 0;
1753 }
1754
1755 static int qeth_cm_enable(struct qeth_card *card)
1756 {
1757         int rc;
1758         struct qeth_cmd_buffer *iob;
1759
1760         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1761
1762         iob = qeth_wait_for_buffer(&card->write);
1763         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1764         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1765                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1766         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1767                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1768
1769         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1770                                     qeth_cm_enable_cb, NULL);
1771         return rc;
1772 }
1773
1774 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1775                 unsigned long data)
1776 {
1777
1778         struct qeth_cmd_buffer *iob;
1779
1780         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1781
1782         iob = (struct qeth_cmd_buffer *) data;
1783         memcpy(&card->token.cm_connection_r,
1784                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1785                QETH_MPC_TOKEN_LENGTH);
1786         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1787         return 0;
1788 }
1789
1790 static int qeth_cm_setup(struct qeth_card *card)
1791 {
1792         int rc;
1793         struct qeth_cmd_buffer *iob;
1794
1795         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1796
1797         iob = qeth_wait_for_buffer(&card->write);
1798         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1799         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1800                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1801         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1802                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1803         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1804                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1805         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1806                                     qeth_cm_setup_cb, NULL);
1807         return rc;
1808
1809 }
1810
1811 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1812 {
1813         switch (card->info.type) {
1814         case QETH_CARD_TYPE_UNKNOWN:
1815                 return 1500;
1816         case QETH_CARD_TYPE_IQD:
1817                 return card->info.max_mtu;
1818         case QETH_CARD_TYPE_OSAE:
1819                 switch (card->info.link_type) {
1820                 case QETH_LINK_TYPE_HSTR:
1821                 case QETH_LINK_TYPE_LANE_TR:
1822                         return 2000;
1823                 default:
1824                         return 1492;
1825                 }
1826         default:
1827                 return 1500;
1828         }
1829 }
1830
1831 static inline int qeth_get_max_mtu_for_card(int cardtype)
1832 {
1833         switch (cardtype) {
1834
1835         case QETH_CARD_TYPE_UNKNOWN:
1836         case QETH_CARD_TYPE_OSAE:
1837         case QETH_CARD_TYPE_OSN:
1838                 return 61440;
1839         case QETH_CARD_TYPE_IQD:
1840                 return 57344;
1841         default:
1842                 return 1500;
1843         }
1844 }
1845
1846 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1847 {
1848         switch (cardtype) {
1849         case QETH_CARD_TYPE_IQD:
1850                 return 1;
1851         default:
1852                 return 0;
1853         }
1854 }
1855
1856 static inline int qeth_get_mtu_outof_framesize(int framesize)
1857 {
1858         switch (framesize) {
1859         case 0x4000:
1860                 return 8192;
1861         case 0x6000:
1862                 return 16384;
1863         case 0xa000:
1864                 return 32768;
1865         case 0xffff:
1866                 return 57344;
1867         default:
1868                 return 0;
1869         }
1870 }
1871
1872 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1873 {
1874         switch (card->info.type) {
1875         case QETH_CARD_TYPE_OSAE:
1876                 return ((mtu >= 576) && (mtu <= 61440));
1877         case QETH_CARD_TYPE_IQD:
1878                 return ((mtu >= 576) &&
1879                         (mtu <= card->info.max_mtu + 4096 - 32));
1880         case QETH_CARD_TYPE_OSN:
1881         case QETH_CARD_TYPE_UNKNOWN:
1882         default:
1883                 return 1;
1884         }
1885 }
1886
1887 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1888                 unsigned long data)
1889 {
1890
1891         __u16 mtu, framesize;
1892         __u16 len;
1893         __u8 link_type;
1894         struct qeth_cmd_buffer *iob;
1895
1896         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1897
1898         iob = (struct qeth_cmd_buffer *) data;
1899         memcpy(&card->token.ulp_filter_r,
1900                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1901                QETH_MPC_TOKEN_LENGTH);
1902         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1903                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1904                 mtu = qeth_get_mtu_outof_framesize(framesize);
1905                 if (!mtu) {
1906                         iob->rc = -EINVAL;
1907                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1908                         return 0;
1909                 }
1910                 card->info.max_mtu = mtu;
1911                 card->info.initial_mtu = mtu;
1912                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1913         } else {
1914                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1915                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1916                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1917         }
1918
1919         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1920         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1921                 memcpy(&link_type,
1922                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1923                 card->info.link_type = link_type;
1924         } else
1925                 card->info.link_type = 0;
1926         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1927         return 0;
1928 }
1929
1930 static int qeth_ulp_enable(struct qeth_card *card)
1931 {
1932         int rc;
1933         char prot_type;
1934         struct qeth_cmd_buffer *iob;
1935
1936         /*FIXME: trace view callbacks*/
1937         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1938
1939         iob = qeth_wait_for_buffer(&card->write);
1940         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1941
1942         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1943                 (__u8) card->info.portno;
1944         if (card->options.layer2)
1945                 if (card->info.type == QETH_CARD_TYPE_OSN)
1946                         prot_type = QETH_PROT_OSN2;
1947                 else
1948                         prot_type = QETH_PROT_LAYER2;
1949         else
1950                 prot_type = QETH_PROT_TCPIP;
1951
1952         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1953         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1954                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1955         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1956                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1957         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1958                card->info.portname, 9);
1959         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1960                                     qeth_ulp_enable_cb, NULL);
1961         return rc;
1962
1963 }
1964
1965 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1966                 unsigned long data)
1967 {
1968         struct qeth_cmd_buffer *iob;
1969
1970         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1971
1972         iob = (struct qeth_cmd_buffer *) data;
1973         memcpy(&card->token.ulp_connection_r,
1974                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1975                QETH_MPC_TOKEN_LENGTH);
1976         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1977         return 0;
1978 }
1979
1980 static int qeth_ulp_setup(struct qeth_card *card)
1981 {
1982         int rc;
1983         __u16 temp;
1984         struct qeth_cmd_buffer *iob;
1985         struct ccw_dev_id dev_id;
1986
1987         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
1988
1989         iob = qeth_wait_for_buffer(&card->write);
1990         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
1991
1992         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
1993                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1994         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
1995                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
1996         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
1997                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
1998
1999         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2000         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2001         temp = (card->info.cula << 8) + card->info.unit_addr2;
2002         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2003         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2004                                     qeth_ulp_setup_cb, NULL);
2005         return rc;
2006 }
2007
2008 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2009 {
2010         int i, j;
2011
2012         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2013
2014         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2015                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2016                 return 0;
2017
2018         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2019                                   GFP_KERNEL);
2020         if (!card->qdio.in_q)
2021                 goto out_nomem;
2022         QETH_DBF_TEXT(SETUP, 2, "inq");
2023         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2024         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2025         /* give inbound qeth_qdio_buffers their qdio_buffers */
2026         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2027                 card->qdio.in_q->bufs[i].buffer =
2028                         &card->qdio.in_q->qdio_bufs[i];
2029         /* inbound buffer pool */
2030         if (qeth_alloc_buffer_pool(card))
2031                 goto out_freeinq;
2032         /* outbound */
2033         card->qdio.out_qs =
2034                 kmalloc(card->qdio.no_out_queues *
2035                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2036         if (!card->qdio.out_qs)
2037                 goto out_freepool;
2038         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2039                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2040                                                GFP_KERNEL);
2041                 if (!card->qdio.out_qs[i])
2042                         goto out_freeoutq;
2043                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2044                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2045                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2046                 card->qdio.out_qs[i]->queue_no = i;
2047                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2048                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2049                         card->qdio.out_qs[i]->bufs[j].buffer =
2050                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2051                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2052                                             skb_list);
2053                         lockdep_set_class(
2054                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2055                                 &qdio_out_skb_queue_key);
2056                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2057                 }
2058         }
2059         return 0;
2060
2061 out_freeoutq:
2062         while (i > 0)
2063                 kfree(card->qdio.out_qs[--i]);
2064         kfree(card->qdio.out_qs);
2065         card->qdio.out_qs = NULL;
2066 out_freepool:
2067         qeth_free_buffer_pool(card);
2068 out_freeinq:
2069         kfree(card->qdio.in_q);
2070         card->qdio.in_q = NULL;
2071 out_nomem:
2072         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2073         return -ENOMEM;
2074 }
2075
2076 static void qeth_create_qib_param_field(struct qeth_card *card,
2077                 char *param_field)
2078 {
2079
2080         param_field[0] = _ascebc['P'];
2081         param_field[1] = _ascebc['C'];
2082         param_field[2] = _ascebc['I'];
2083         param_field[3] = _ascebc['T'];
2084         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2085         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2086         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2087 }
2088
2089 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2090                 char *param_field)
2091 {
2092         param_field[16] = _ascebc['B'];
2093         param_field[17] = _ascebc['L'];
2094         param_field[18] = _ascebc['K'];
2095         param_field[19] = _ascebc['T'];
2096         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2097         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2098         *((unsigned int *) (&param_field[28])) =
2099                 card->info.blkt.inter_packet_jumbo;
2100 }
2101
2102 static int qeth_qdio_activate(struct qeth_card *card)
2103 {
2104         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2105         return qdio_activate(CARD_DDEV(card));
2106 }
2107
2108 static int qeth_dm_act(struct qeth_card *card)
2109 {
2110         int rc;
2111         struct qeth_cmd_buffer *iob;
2112
2113         QETH_DBF_TEXT(SETUP, 2, "dmact");
2114
2115         iob = qeth_wait_for_buffer(&card->write);
2116         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2117
2118         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2119                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2120         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2121                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2122         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2123         return rc;
2124 }
2125
2126 static int qeth_mpc_initialize(struct qeth_card *card)
2127 {
2128         int rc;
2129
2130         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2131
2132         rc = qeth_issue_next_read(card);
2133         if (rc) {
2134                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2135                 return rc;
2136         }
2137         rc = qeth_cm_enable(card);
2138         if (rc) {
2139                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2140                 goto out_qdio;
2141         }
2142         rc = qeth_cm_setup(card);
2143         if (rc) {
2144                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2145                 goto out_qdio;
2146         }
2147         rc = qeth_ulp_enable(card);
2148         if (rc) {
2149                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2150                 goto out_qdio;
2151         }
2152         rc = qeth_ulp_setup(card);
2153         if (rc) {
2154                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2155                 goto out_qdio;
2156         }
2157         rc = qeth_alloc_qdio_buffers(card);
2158         if (rc) {
2159                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2160                 goto out_qdio;
2161         }
2162         rc = qeth_qdio_establish(card);
2163         if (rc) {
2164                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2165                 qeth_free_qdio_buffers(card);
2166                 goto out_qdio;
2167         }
2168         rc = qeth_qdio_activate(card);
2169         if (rc) {
2170                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2171                 goto out_qdio;
2172         }
2173         rc = qeth_dm_act(card);
2174         if (rc) {
2175                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2176                 goto out_qdio;
2177         }
2178
2179         return 0;
2180 out_qdio:
2181         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2182         return rc;
2183 }
2184
2185 static void qeth_print_status_with_portname(struct qeth_card *card)
2186 {
2187         char dbf_text[15];
2188         int i;
2189
2190         sprintf(dbf_text, "%s", card->info.portname + 1);
2191         for (i = 0; i < 8; i++)
2192                 dbf_text[i] =
2193                         (char) _ebcasc[(__u8) dbf_text[i]];
2194         dbf_text[8] = 0;
2195         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2196                "with link type %s (portname: %s)\n",
2197                qeth_get_cardname(card),
2198                (card->info.mcl_level[0]) ? " (level: " : "",
2199                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2200                (card->info.mcl_level[0]) ? ")" : "",
2201                qeth_get_cardname_short(card),
2202                dbf_text);
2203
2204 }
2205
2206 static void qeth_print_status_no_portname(struct qeth_card *card)
2207 {
2208         if (card->info.portname[0])
2209                 dev_info(&card->gdev->dev, "Device is a%s "
2210                        "card%s%s%s\nwith link type %s "
2211                        "(no portname needed by interface).\n",
2212                        qeth_get_cardname(card),
2213                        (card->info.mcl_level[0]) ? " (level: " : "",
2214                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2215                        (card->info.mcl_level[0]) ? ")" : "",
2216                        qeth_get_cardname_short(card));
2217         else
2218                 dev_info(&card->gdev->dev, "Device is a%s "
2219                        "card%s%s%s\nwith link type %s.\n",
2220                        qeth_get_cardname(card),
2221                        (card->info.mcl_level[0]) ? " (level: " : "",
2222                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2223                        (card->info.mcl_level[0]) ? ")" : "",
2224                        qeth_get_cardname_short(card));
2225 }
2226
2227 void qeth_print_status_message(struct qeth_card *card)
2228 {
2229         switch (card->info.type) {
2230         case QETH_CARD_TYPE_OSAE:
2231                 /* VM will use a non-zero first character
2232                  * to indicate a HiperSockets like reporting
2233                  * of the level OSA sets the first character to zero
2234                  * */
2235                 if (!card->info.mcl_level[0]) {
2236                         sprintf(card->info.mcl_level, "%02x%02x",
2237                                 card->info.mcl_level[2],
2238                                 card->info.mcl_level[3]);
2239
2240                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2241                         break;
2242                 }
2243                 /* fallthrough */
2244         case QETH_CARD_TYPE_IQD:
2245                 if ((card->info.guestlan) ||
2246                     (card->info.mcl_level[0] & 0x80)) {
2247                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2248                                 card->info.mcl_level[0]];
2249                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2250                                 card->info.mcl_level[1]];
2251                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2252                                 card->info.mcl_level[2]];
2253                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2254                                 card->info.mcl_level[3]];
2255                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2256                 }
2257                 break;
2258         default:
2259                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2260         }
2261         if (card->info.portname_required)
2262                 qeth_print_status_with_portname(card);
2263         else
2264                 qeth_print_status_no_portname(card);
2265 }
2266 EXPORT_SYMBOL_GPL(qeth_print_status_message);
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);
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
2343         buf->pool_entry = pool_entry;
2344         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2345                 buf->buffer->element[i].length = PAGE_SIZE;
2346                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2347                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2348                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2349                 else
2350                         buf->buffer->element[i].flags = 0;
2351         }
2352         return 0;
2353 }
2354
2355 int qeth_init_qdio_queues(struct qeth_card *card)
2356 {
2357         int i, j;
2358         int rc;
2359
2360         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2361
2362         /* inbound queue */
2363         memset(card->qdio.in_q->qdio_bufs, 0,
2364                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2365         qeth_initialize_working_pool_list(card);
2366         /*give only as many buffers to hardware as we have buffer pool entries*/
2367         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2368                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2369         card->qdio.in_q->next_buf_to_init =
2370                 card->qdio.in_buf_pool.buf_count - 1;
2371         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2372                      card->qdio.in_buf_pool.buf_count - 1);
2373         if (rc) {
2374                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2375                 return rc;
2376         }
2377         /* outbound queue */
2378         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2379                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2380                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2381                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2382                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2383                                         &card->qdio.out_qs[i]->bufs[j]);
2384                 }
2385                 card->qdio.out_qs[i]->card = card;
2386                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2387                 card->qdio.out_qs[i]->do_pack = 0;
2388                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2389                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2390                 atomic_set(&card->qdio.out_qs[i]->state,
2391                            QETH_OUT_Q_UNLOCKED);
2392         }
2393         return 0;
2394 }
2395 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2396
2397 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2398 {
2399         switch (link_type) {
2400         case QETH_LINK_TYPE_HSTR:
2401                 return 2;
2402         default:
2403                 return 1;
2404         }
2405 }
2406
2407 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2408                 struct qeth_ipa_cmd *cmd, __u8 command,
2409                 enum qeth_prot_versions prot)
2410 {
2411         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2412         cmd->hdr.command = command;
2413         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2414         cmd->hdr.seqno = card->seqno.ipa;
2415         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2416         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2417         if (card->options.layer2)
2418                 cmd->hdr.prim_version_no = 2;
2419         else
2420                 cmd->hdr.prim_version_no = 1;
2421         cmd->hdr.param_count = 1;
2422         cmd->hdr.prot_version = prot;
2423         cmd->hdr.ipa_supported = 0;
2424         cmd->hdr.ipa_enabled = 0;
2425 }
2426
2427 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2428                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2429 {
2430         struct qeth_cmd_buffer *iob;
2431         struct qeth_ipa_cmd *cmd;
2432
2433         iob = qeth_wait_for_buffer(&card->write);
2434         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2435         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2436
2437         return iob;
2438 }
2439 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2440
2441 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2442                 char prot_type)
2443 {
2444         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2445         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2446         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2447                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2448 }
2449 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2450
2451 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2452                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2453                         unsigned long),
2454                 void *reply_param)
2455 {
2456         int rc;
2457         char prot_type;
2458
2459         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2460
2461         if (card->options.layer2)
2462                 if (card->info.type == QETH_CARD_TYPE_OSN)
2463                         prot_type = QETH_PROT_OSN2;
2464                 else
2465                         prot_type = QETH_PROT_LAYER2;
2466         else
2467                 prot_type = QETH_PROT_TCPIP;
2468         qeth_prepare_ipa_cmd(card, iob, prot_type);
2469         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2470                                                 iob, reply_cb, reply_param);
2471         return rc;
2472 }
2473 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2474
2475 static int qeth_send_startstoplan(struct qeth_card *card,
2476                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2477 {
2478         int rc;
2479         struct qeth_cmd_buffer *iob;
2480
2481         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2482         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2483
2484         return rc;
2485 }
2486
2487 int qeth_send_startlan(struct qeth_card *card)
2488 {
2489         int rc;
2490
2491         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2492
2493         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2494         return rc;
2495 }
2496 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2497
2498 int qeth_send_stoplan(struct qeth_card *card)
2499 {
2500         int rc = 0;
2501
2502         /*
2503          * TODO: according to the IPA format document page 14,
2504          * TCP/IP (we!) never issue a STOPLAN
2505          * is this right ?!?
2506          */
2507         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2508
2509         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2510         return rc;
2511 }
2512 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2513
2514 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2515                 struct qeth_reply *reply, unsigned long data)
2516 {
2517         struct qeth_ipa_cmd *cmd;
2518
2519         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2520
2521         cmd = (struct qeth_ipa_cmd *) data;
2522         if (cmd->hdr.return_code == 0)
2523                 cmd->hdr.return_code =
2524                         cmd->data.setadapterparms.hdr.return_code;
2525         return 0;
2526 }
2527 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2528
2529 static int qeth_query_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, 3, "quyadpcb");
2535
2536         cmd = (struct qeth_ipa_cmd *) data;
2537         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2538                 card->info.link_type =
2539                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2540         card->options.adp.supported_funcs =
2541                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2542         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2543 }
2544
2545 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2546                 __u32 command, __u32 cmdlen)
2547 {
2548         struct qeth_cmd_buffer *iob;
2549         struct qeth_ipa_cmd *cmd;
2550
2551         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2552                                      QETH_PROT_IPV4);
2553         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2554         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2555         cmd->data.setadapterparms.hdr.command_code = command;
2556         cmd->data.setadapterparms.hdr.used_total = 1;
2557         cmd->data.setadapterparms.hdr.seq_no = 1;
2558
2559         return iob;
2560 }
2561 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2562
2563 int qeth_query_setadapterparms(struct qeth_card *card)
2564 {
2565         int rc;
2566         struct qeth_cmd_buffer *iob;
2567
2568         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2569         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2570                                    sizeof(struct qeth_ipacmd_setadpparms));
2571         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2572         return rc;
2573 }
2574 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2575
2576 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2577                 const char *dbftext)
2578 {
2579         if (qdio_error) {
2580                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2581                 QETH_DBF_TEXT(QERR, 2, dbftext);
2582                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2583                                buf->element[15].flags & 0xff);
2584                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2585                                buf->element[14].flags & 0xff);
2586                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2587                 return 1;
2588         }
2589         return 0;
2590 }
2591 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2592
2593 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2594 {
2595         struct qeth_qdio_q *queue = card->qdio.in_q;
2596         int count;
2597         int i;
2598         int rc;
2599         int newcount = 0;
2600
2601         count = (index < queue->next_buf_to_init)?
2602                 card->qdio.in_buf_pool.buf_count -
2603                 (queue->next_buf_to_init - index) :
2604                 card->qdio.in_buf_pool.buf_count -
2605                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2606         /* only requeue at a certain threshold to avoid SIGAs */
2607         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2608                 for (i = queue->next_buf_to_init;
2609                      i < queue->next_buf_to_init + count; ++i) {
2610                         if (qeth_init_input_buffer(card,
2611                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2612                                 break;
2613                         } else {
2614                                 newcount++;
2615                         }
2616                 }
2617
2618                 if (newcount < count) {
2619                         /* we are in memory shortage so we switch back to
2620                            traditional skb allocation and drop packages */
2621                         atomic_set(&card->force_alloc_skb, 3);
2622                         count = newcount;
2623                 } else {
2624                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2625                 }
2626
2627                 /*
2628                  * according to old code it should be avoided to requeue all
2629                  * 128 buffers in order to benefit from PCI avoidance.
2630                  * this function keeps at least one buffer (the buffer at
2631                  * 'index') un-requeued -> this buffer is the first buffer that
2632                  * will be requeued the next time
2633                  */
2634                 if (card->options.performance_stats) {
2635                         card->perf_stats.inbound_do_qdio_cnt++;
2636                         card->perf_stats.inbound_do_qdio_start_time =
2637                                 qeth_get_micros();
2638                 }
2639                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2640                              queue->next_buf_to_init, count);
2641                 if (card->options.performance_stats)
2642                         card->perf_stats.inbound_do_qdio_time +=
2643                                 qeth_get_micros() -
2644                                 card->perf_stats.inbound_do_qdio_start_time;
2645                 if (rc) {
2646                         dev_warn(&card->gdev->dev,
2647                                 "QDIO reported an error, rc=%i\n", rc);
2648                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2649                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2650                 }
2651                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2652                                           QDIO_MAX_BUFFERS_PER_Q;
2653         }
2654 }
2655 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2656
2657 static int qeth_handle_send_error(struct qeth_card *card,
2658                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2659 {
2660         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2661
2662         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2663         if (card->info.type == QETH_CARD_TYPE_IQD) {
2664                 if (sbalf15 == 0) {
2665                         qdio_err = 0;
2666                 } else {
2667                         qdio_err = 1;
2668                 }
2669         }
2670         qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");
2671
2672         if (!qdio_err)
2673                 return QETH_SEND_ERROR_NONE;
2674
2675         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2676                 return QETH_SEND_ERROR_RETRY;
2677
2678         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2679         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2680         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2681                        (u16)qdio_err, (u8)sbalf15);
2682         return QETH_SEND_ERROR_LINK_FAILURE;
2683 }
2684
2685 /*
2686  * Switched to packing state if the number of used buffers on a queue
2687  * reaches a certain limit.
2688  */
2689 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2690 {
2691         if (!queue->do_pack) {
2692                 if (atomic_read(&queue->used_buffers)
2693                     >= QETH_HIGH_WATERMARK_PACK){
2694                         /* switch non-PACKING -> PACKING */
2695                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2696                         if (queue->card->options.performance_stats)
2697                                 queue->card->perf_stats.sc_dp_p++;
2698                         queue->do_pack = 1;
2699                 }
2700         }
2701 }
2702
2703 /*
2704  * Switches from packing to non-packing mode. If there is a packing
2705  * buffer on the queue this buffer will be prepared to be flushed.
2706  * In that case 1 is returned to inform the caller. If no buffer
2707  * has to be flushed, zero is returned.
2708  */
2709 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2710 {
2711         struct qeth_qdio_out_buffer *buffer;
2712         int flush_count = 0;
2713
2714         if (queue->do_pack) {
2715                 if (atomic_read(&queue->used_buffers)
2716                     <= QETH_LOW_WATERMARK_PACK) {
2717                         /* switch PACKING -> non-PACKING */
2718                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2719                         if (queue->card->options.performance_stats)
2720                                 queue->card->perf_stats.sc_p_dp++;
2721                         queue->do_pack = 0;
2722                         /* flush packing buffers */
2723                         buffer = &queue->bufs[queue->next_buf_to_fill];
2724                         if ((atomic_read(&buffer->state) ==
2725                                                 QETH_QDIO_BUF_EMPTY) &&
2726                             (buffer->next_element_to_fill > 0)) {
2727                                 atomic_set(&buffer->state,
2728                                                 QETH_QDIO_BUF_PRIMED);
2729                                 flush_count++;
2730                                 queue->next_buf_to_fill =
2731                                         (queue->next_buf_to_fill + 1) %
2732                                         QDIO_MAX_BUFFERS_PER_Q;
2733                         }
2734                 }
2735         }
2736         return flush_count;
2737 }
2738
2739 /*
2740  * Called to flush a packing buffer if no more pci flags are on the queue.
2741  * Checks if there is a packing buffer and prepares it to be flushed.
2742  * In that case returns 1, otherwise zero.
2743  */
2744 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2745 {
2746         struct qeth_qdio_out_buffer *buffer;
2747
2748         buffer = &queue->bufs[queue->next_buf_to_fill];
2749         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2750            (buffer->next_element_to_fill > 0)) {
2751                 /* it's a packing buffer */
2752                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2753                 queue->next_buf_to_fill =
2754                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2755                 return 1;
2756         }
2757         return 0;
2758 }
2759
2760 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2761                                int count)
2762 {
2763         struct qeth_qdio_out_buffer *buf;
2764         int rc;
2765         int i;
2766         unsigned int qdio_flags;
2767
2768         for (i = index; i < index + count; ++i) {
2769                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2770                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2771                                 SBAL_FLAGS_LAST_ENTRY;
2772
2773                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2774                         continue;
2775
2776                 if (!queue->do_pack) {
2777                         if ((atomic_read(&queue->used_buffers) >=
2778                                 (QETH_HIGH_WATERMARK_PACK -
2779                                  QETH_WATERMARK_PACK_FUZZ)) &&
2780                             !atomic_read(&queue->set_pci_flags_count)) {
2781                                 /* it's likely that we'll go to packing
2782                                  * mode soon */
2783                                 atomic_inc(&queue->set_pci_flags_count);
2784                                 buf->buffer->element[0].flags |= 0x40;
2785                         }
2786                 } else {
2787                         if (!atomic_read(&queue->set_pci_flags_count)) {
2788                                 /*
2789                                  * there's no outstanding PCI any more, so we
2790                                  * have to request a PCI to be sure the the PCI
2791                                  * will wake at some time in the future then we
2792                                  * can flush packed buffers that might still be
2793                                  * hanging around, which can happen if no
2794                                  * further send was requested by the stack
2795                                  */
2796                                 atomic_inc(&queue->set_pci_flags_count);
2797                                 buf->buffer->element[0].flags |= 0x40;
2798                         }
2799                 }
2800         }
2801
2802         queue->sync_iqdio_error = 0;
2803         queue->card->dev->trans_start = jiffies;
2804         if (queue->card->options.performance_stats) {
2805                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2806                 queue->card->perf_stats.outbound_do_qdio_start_time =
2807                         qeth_get_micros();
2808         }
2809         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2810         if (atomic_read(&queue->set_pci_flags_count))
2811                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2812         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2813                      queue->queue_no, index, count);
2814         if (queue->card->options.performance_stats)
2815                 queue->card->perf_stats.outbound_do_qdio_time +=
2816                         qeth_get_micros() -
2817                         queue->card->perf_stats.outbound_do_qdio_start_time;
2818         if (rc > 0) {
2819                 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2820                         queue->sync_iqdio_error = rc & 3;
2821         }
2822         if (rc) {
2823                 queue->card->stats.tx_errors += count;
2824                 /* ignore temporary SIGA errors without busy condition */
2825                 if (rc == QDIO_ERROR_SIGA_TARGET)
2826                         return;
2827                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2828                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2829                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2830
2831                 /* this must not happen under normal circumstances. if it
2832                  * happens something is really wrong -> recover */
2833                 qeth_schedule_recovery(queue->card);
2834                 return;
2835         }
2836         atomic_add(count, &queue->used_buffers);
2837         if (queue->card->options.performance_stats)
2838                 queue->card->perf_stats.bufs_sent += count;
2839 }
2840
2841 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2842 {
2843         int index;
2844         int flush_cnt = 0;
2845         int q_was_packing = 0;
2846
2847         /*
2848          * check if weed have to switch to non-packing mode or if
2849          * we have to get a pci flag out on the queue
2850          */
2851         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2852             !atomic_read(&queue->set_pci_flags_count)) {
2853                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2854                                 QETH_OUT_Q_UNLOCKED) {
2855                         /*
2856                          * If we get in here, there was no action in
2857                          * do_send_packet. So, we check if there is a
2858                          * packing buffer to be flushed here.
2859                          */
2860                         netif_stop_queue(queue->card->dev);
2861                         index = queue->next_buf_to_fill;
2862                         q_was_packing = queue->do_pack;
2863                         /* queue->do_pack may change */
2864                         barrier();
2865                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2866                         if (!flush_cnt &&
2867                             !atomic_read(&queue->set_pci_flags_count))
2868                                 flush_cnt +=
2869                                         qeth_flush_buffers_on_no_pci(queue);
2870                         if (queue->card->options.performance_stats &&
2871                             q_was_packing)
2872                                 queue->card->perf_stats.bufs_sent_pack +=
2873                                         flush_cnt;
2874                         if (flush_cnt)
2875                                 qeth_flush_buffers(queue, index, flush_cnt);
2876                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2877                 }
2878         }
2879 }
2880
2881 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2882                 unsigned int qdio_error, int __queue, int first_element,
2883                 int count, unsigned long card_ptr)
2884 {
2885         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2886         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2887         struct qeth_qdio_out_buffer *buffer;
2888         int i;
2889         unsigned qeth_send_err;
2890
2891         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2892         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2893                 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2894                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2895                 netif_stop_queue(card->dev);
2896                 qeth_schedule_recovery(card);
2897                 return;
2898         }
2899         if (card->options.performance_stats) {
2900                 card->perf_stats.outbound_handler_cnt++;
2901                 card->perf_stats.outbound_handler_start_time =
2902                         qeth_get_micros();
2903         }
2904         for (i = first_element; i < (first_element + count); ++i) {
2905                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2906                 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
2907                 __qeth_clear_output_buffer(queue, buffer,
2908                         (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2909         }
2910         atomic_sub(count, &queue->used_buffers);
2911         /* check if we need to do something on this outbound queue */
2912         if (card->info.type != QETH_CARD_TYPE_IQD)
2913                 qeth_check_outbound_queue(queue);
2914
2915         netif_wake_queue(queue->card->dev);
2916         if (card->options.performance_stats)
2917                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2918                         card->perf_stats.outbound_handler_start_time;
2919 }
2920 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2921
2922 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2923                         int ipv, int cast_type)
2924 {
2925         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
2926                 return card->qdio.default_out_queue;
2927         switch (card->qdio.no_out_queues) {
2928         case 4:
2929                 if (cast_type && card->info.is_multicast_different)
2930                         return card->info.is_multicast_different &
2931                                 (card->qdio.no_out_queues - 1);
2932                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2933                         const u8 tos = ip_hdr(skb)->tos;
2934
2935                         if (card->qdio.do_prio_queueing ==
2936                                 QETH_PRIO_Q_ING_TOS) {
2937                                 if (tos & IP_TOS_NOTIMPORTANT)
2938                                         return 3;
2939                                 if (tos & IP_TOS_HIGHRELIABILITY)
2940                                         return 2;
2941                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
2942                                         return 1;
2943                                 if (tos & IP_TOS_LOWDELAY)
2944                                         return 0;
2945                         }
2946                         if (card->qdio.do_prio_queueing ==
2947                                 QETH_PRIO_Q_ING_PREC)
2948                                 return 3 - (tos >> 6);
2949                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
2950                         /* TODO: IPv6!!! */
2951                 }
2952                 return card->qdio.default_out_queue;
2953         case 1: /* fallthrough for single-out-queue 1920-device */
2954         default:
2955                 return card->qdio.default_out_queue;
2956         }
2957 }
2958 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
2959
2960 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
2961                      struct sk_buff *skb, int elems)
2962 {
2963         int elements_needed = 0;
2964
2965         if (skb_shinfo(skb)->nr_frags > 0)
2966                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
2967         if (elements_needed == 0)
2968                 elements_needed = 1 + (((((unsigned long) skb->data) %
2969                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
2970         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2971                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
2972                         "(Number=%d / Length=%d). Discarded.\n",
2973                         (elements_needed+elems), skb->len);
2974                 return 0;
2975         }
2976         return elements_needed;
2977 }
2978 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
2979
2980 static inline void __qeth_fill_buffer(struct sk_buff *skb,
2981         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
2982         int offset)
2983 {
2984         int length = skb->len;
2985         int length_here;
2986         int element;
2987         char *data;
2988         int first_lap ;
2989
2990         element = *next_element_to_fill;
2991         data = skb->data;
2992         first_lap = (is_tso == 0 ? 1 : 0);
2993
2994         if (offset >= 0) {
2995                 data = skb->data + offset;
2996                 length -= offset;
2997                 first_lap = 0;
2998         }
2999
3000         while (length > 0) {
3001                 /* length_here is the remaining amount of data in this page */
3002                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3003                 if (length < length_here)
3004                         length_here = length;
3005
3006                 buffer->element[element].addr = data;
3007                 buffer->element[element].length = length_here;
3008                 length -= length_here;
3009                 if (!length) {
3010                         if (first_lap)
3011                                 buffer->element[element].flags = 0;
3012                         else
3013                                 buffer->element[element].flags =
3014                                     SBAL_FLAGS_LAST_FRAG;
3015                 } else {
3016                         if (first_lap)
3017                                 buffer->element[element].flags =
3018                                     SBAL_FLAGS_FIRST_FRAG;
3019                         else
3020                                 buffer->element[element].flags =
3021                                     SBAL_FLAGS_MIDDLE_FRAG;
3022                 }
3023                 data += length_here;
3024                 element++;
3025                 first_lap = 0;
3026         }
3027         *next_element_to_fill = element;
3028 }
3029
3030 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3031                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3032                 struct qeth_hdr *hdr, int offset, int hd_len)
3033 {
3034         struct qdio_buffer *buffer;
3035         int flush_cnt = 0, hdr_len, large_send = 0;
3036
3037         buffer = buf->buffer;
3038         atomic_inc(&skb->users);
3039         skb_queue_tail(&buf->skb_list, skb);
3040
3041         /*check first on TSO ....*/
3042         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3043                 int element = buf->next_element_to_fill;
3044
3045                 hdr_len = sizeof(struct qeth_hdr_tso) +
3046                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3047                 /*fill first buffer entry only with header information */
3048                 buffer->element[element].addr = skb->data;
3049                 buffer->element[element].length = hdr_len;
3050                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3051                 buf->next_element_to_fill++;
3052                 skb->data += hdr_len;
3053                 skb->len  -= hdr_len;
3054                 large_send = 1;
3055         }
3056
3057         if (offset >= 0) {
3058                 int element = buf->next_element_to_fill;
3059                 buffer->element[element].addr = hdr;
3060                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3061                                                         hd_len;
3062                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3063                 buf->is_header[element] = 1;
3064                 buf->next_element_to_fill++;
3065         }
3066
3067         if (skb_shinfo(skb)->nr_frags == 0)
3068                 __qeth_fill_buffer(skb, buffer, large_send,
3069                                 (int *)&buf->next_element_to_fill, offset);
3070         else
3071                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3072                                         (int *)&buf->next_element_to_fill);
3073
3074         if (!queue->do_pack) {
3075                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3076                 /* set state to PRIMED -> will be flushed */
3077                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3078                 flush_cnt = 1;
3079         } else {
3080                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3081                 if (queue->card->options.performance_stats)
3082                         queue->card->perf_stats.skbs_sent_pack++;
3083                 if (buf->next_element_to_fill >=
3084                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3085                         /*
3086                          * packed buffer if full -> set state PRIMED
3087                          * -> will be flushed
3088                          */
3089                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3090                         flush_cnt = 1;
3091                 }
3092         }
3093         return flush_cnt;
3094 }
3095
3096 int qeth_do_send_packet_fast(struct qeth_card *card,
3097                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3098                 struct qeth_hdr *hdr, int elements_needed,
3099                 int offset, int hd_len)
3100 {
3101         struct qeth_qdio_out_buffer *buffer;
3102         struct sk_buff *skb1;
3103         struct qeth_skb_data *retry_ctrl;
3104         int index;
3105         int rc;
3106
3107         /* spin until we get the queue ... */
3108         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3109                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3110         /* ... now we've got the queue */
3111         index = queue->next_buf_to_fill;
3112         buffer = &queue->bufs[queue->next_buf_to_fill];
3113         /*
3114          * check if buffer is empty to make sure that we do not 'overtake'
3115          * ourselves and try to fill a buffer that is already primed
3116          */
3117         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3118                 goto out;
3119         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3120                                           QDIO_MAX_BUFFERS_PER_Q;
3121         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3122         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3123         qeth_flush_buffers(queue, index, 1);
3124         if (queue->sync_iqdio_error == 2) {
3125                 skb1 = skb_dequeue(&buffer->skb_list);
3126                 while (skb1) {
3127                         atomic_dec(&skb1->users);
3128                         skb1 = skb_dequeue(&buffer->skb_list);
3129                 }
3130                 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3131                 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3132                         retry_ctrl->magic = QETH_SKB_MAGIC;
3133                         retry_ctrl->count = 0;
3134                 }
3135                 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3136                         retry_ctrl->count++;
3137                         rc = dev_queue_xmit(skb);
3138                 } else {
3139                         dev_kfree_skb_any(skb);
3140                         QETH_DBF_TEXT(QERR, 2, "qrdrop");
3141                 }
3142         }
3143         return 0;
3144 out:
3145         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3146         return -EBUSY;
3147 }
3148 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3149
3150 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3151                 struct sk_buff *skb, struct qeth_hdr *hdr,
3152                 int elements_needed)
3153 {
3154         struct qeth_qdio_out_buffer *buffer;
3155         int start_index;
3156         int flush_count = 0;
3157         int do_pack = 0;
3158         int tmp;
3159         int rc = 0;
3160
3161         /* spin until we get the queue ... */
3162         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3163                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3164         start_index = queue->next_buf_to_fill;
3165         buffer = &queue->bufs[queue->next_buf_to_fill];
3166         /*
3167          * check if buffer is empty to make sure that we do not 'overtake'
3168          * ourselves and try to fill a buffer that is already primed
3169          */
3170         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3171                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3172                 return -EBUSY;
3173         }
3174         /* check if we need to switch packing state of this queue */
3175         qeth_switch_to_packing_if_needed(queue);
3176         if (queue->do_pack) {
3177                 do_pack = 1;
3178                 /* does packet fit in current buffer? */
3179                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3180                     buffer->next_element_to_fill) < elements_needed) {
3181                         /* ... no -> set state PRIMED */
3182                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3183                         flush_count++;
3184                         queue->next_buf_to_fill =
3185                                 (queue->next_buf_to_fill + 1) %
3186                                 QDIO_MAX_BUFFERS_PER_Q;
3187                         buffer = &queue->bufs[queue->next_buf_to_fill];
3188                         /* we did a step forward, so check buffer state
3189                          * again */
3190                         if (atomic_read(&buffer->state) !=
3191                             QETH_QDIO_BUF_EMPTY) {
3192                                 qeth_flush_buffers(queue, start_index,
3193                                                            flush_count);
3194                                 atomic_set(&queue->state,
3195                                                 QETH_OUT_Q_UNLOCKED);
3196                                 return -EBUSY;
3197                         }
3198                 }
3199         }
3200         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3201         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3202                                   QDIO_MAX_BUFFERS_PER_Q;
3203         flush_count += tmp;
3204         if (flush_count)
3205                 qeth_flush_buffers(queue, start_index, flush_count);
3206         else if (!atomic_read(&queue->set_pci_flags_count))
3207                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3208         /*
3209          * queue->state will go from LOCKED -> UNLOCKED or from
3210          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3211          * (switch packing state or flush buffer to get another pci flag out).
3212          * In that case we will enter this loop
3213          */
3214         while (atomic_dec_return(&queue->state)) {
3215                 flush_count = 0;
3216                 start_index = queue->next_buf_to_fill;
3217                 /* check if we can go back to non-packing state */
3218                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3219                 /*
3220                  * check if we need to flush a packing buffer to get a pci
3221                  * flag out on the queue
3222                  */
3223                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3224                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3225                 if (flush_count)
3226                         qeth_flush_buffers(queue, start_index, flush_count);
3227         }
3228         /* at this point the queue is UNLOCKED again */
3229         if (queue->card->options.performance_stats && do_pack)
3230                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3231
3232         return rc;
3233 }
3234 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3235
3236 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3237                 struct qeth_reply *reply, unsigned long data)
3238 {
3239         struct qeth_ipa_cmd *cmd;
3240         struct qeth_ipacmd_setadpparms *setparms;
3241
3242         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3243
3244         cmd = (struct qeth_ipa_cmd *) data;
3245         setparms = &(cmd->data.setadapterparms);
3246
3247         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3248         if (cmd->hdr.return_code) {
3249                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3250                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3251         }
3252         card->info.promisc_mode = setparms->data.mode;
3253         return 0;
3254 }
3255
3256 void qeth_setadp_promisc_mode(struct qeth_card *card)
3257 {
3258         enum qeth_ipa_promisc_modes mode;
3259         struct net_device *dev = card->dev;
3260         struct qeth_cmd_buffer *iob;
3261         struct qeth_ipa_cmd *cmd;
3262
3263         QETH_DBF_TEXT(TRACE, 4, "setprom");
3264
3265         if (((dev->flags & IFF_PROMISC) &&
3266              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3267             (!(dev->flags & IFF_PROMISC) &&
3268              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3269                 return;
3270         mode = SET_PROMISC_MODE_OFF;
3271         if (dev->flags & IFF_PROMISC)
3272                 mode = SET_PROMISC_MODE_ON;
3273         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3274
3275         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3276                         sizeof(struct qeth_ipacmd_setadpparms));
3277         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3278         cmd->data.setadapterparms.data.mode = mode;
3279         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3280 }
3281 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3282
3283 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3284 {
3285         struct qeth_card *card;
3286         char dbf_text[15];
3287
3288         card = dev->ml_priv;
3289
3290         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3291         sprintf(dbf_text, "%8x", new_mtu);
3292         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3293
3294         if (new_mtu < 64)
3295                 return -EINVAL;
3296         if (new_mtu > 65535)
3297                 return -EINVAL;
3298         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3299             (!qeth_mtu_is_valid(card, new_mtu)))
3300                 return -EINVAL;
3301         dev->mtu = new_mtu;
3302         return 0;
3303 }
3304 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3305
3306 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3307 {
3308         struct qeth_card *card;
3309
3310         card = dev->ml_priv;
3311
3312         QETH_DBF_TEXT(TRACE, 5, "getstat");
3313
3314         return &card->stats;
3315 }
3316 EXPORT_SYMBOL_GPL(qeth_get_stats);
3317
3318 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3319                 struct qeth_reply *reply, unsigned long data)
3320 {
3321         struct qeth_ipa_cmd *cmd;
3322
3323         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3324
3325         cmd = (struct qeth_ipa_cmd *) data;
3326         if (!card->options.layer2 ||
3327             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3328                 memcpy(card->dev->dev_addr,
3329                        &cmd->data.setadapterparms.data.change_addr.addr,
3330                        OSA_ADDR_LEN);
3331                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3332         }
3333         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3334         return 0;
3335 }
3336
3337 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3338 {
3339         int rc;
3340         struct qeth_cmd_buffer *iob;
3341         struct qeth_ipa_cmd *cmd;
3342
3343         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3344
3345         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3346                                    sizeof(struct qeth_ipacmd_setadpparms));
3347         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3348         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3349         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3350         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3351                card->dev->dev_addr, OSA_ADDR_LEN);
3352         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3353                                NULL);
3354         return rc;
3355 }
3356 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3357
3358 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3359                 struct qeth_reply *reply, unsigned long data)
3360 {
3361         struct qeth_ipa_cmd *cmd;
3362         struct qeth_set_access_ctrl *access_ctrl_req;
3363         int rc;
3364
3365         QETH_DBF_TEXT(TRACE, 4, "setaccb");
3366
3367         cmd = (struct qeth_ipa_cmd *) data;
3368         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3369         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3370         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3371         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3372                 cmd->data.setadapterparms.hdr.return_code);
3373         switch (cmd->data.setadapterparms.hdr.return_code) {
3374         case SET_ACCESS_CTRL_RC_SUCCESS:
3375         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3376         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3377         {
3378                 card->options.isolation = access_ctrl_req->subcmd_code;
3379                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3380                         dev_info(&card->gdev->dev,
3381                             "QDIO data connection isolation is deactivated\n");
3382                 } else {
3383                         dev_info(&card->gdev->dev,
3384                             "QDIO data connection isolation is activated\n");
3385                 }
3386                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3387                         card->gdev->dev.kobj.name,
3388                         access_ctrl_req->subcmd_code,
3389                         cmd->data.setadapterparms.hdr.return_code);
3390                 rc = 0;
3391                 break;
3392         }
3393         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3394         {
3395                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3396                         card->gdev->dev.kobj.name,
3397                         access_ctrl_req->subcmd_code,
3398                         cmd->data.setadapterparms.hdr.return_code);
3399                 dev_err(&card->gdev->dev, "Adapter does not "
3400                         "support QDIO data connection isolation\n");
3401
3402                 /* ensure isolation mode is "none" */
3403                 card->options.isolation = ISOLATION_MODE_NONE;
3404                 rc = -EOPNOTSUPP;
3405                 break;
3406         }
3407         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3408         {
3409                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3410                         card->gdev->dev.kobj.name,
3411                         access_ctrl_req->subcmd_code,
3412                         cmd->data.setadapterparms.hdr.return_code);
3413                 dev_err(&card->gdev->dev,
3414                         "Adapter is dedicated. "
3415                         "QDIO data connection isolation not supported\n");
3416
3417                 /* ensure isolation mode is "none" */
3418                 card->options.isolation = ISOLATION_MODE_NONE;
3419                 rc = -EOPNOTSUPP;
3420                 break;
3421         }
3422         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3423         {
3424                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3425                         card->gdev->dev.kobj.name,
3426                         access_ctrl_req->subcmd_code,
3427                         cmd->data.setadapterparms.hdr.return_code);
3428                 dev_err(&card->gdev->dev,
3429                         "TSO does not permit QDIO data connection isolation\n");
3430
3431                 /* ensure isolation mode is "none" */
3432                 card->options.isolation = ISOLATION_MODE_NONE;
3433                 rc = -EPERM;
3434                 break;
3435         }
3436         default:
3437         {
3438                 /* this should never happen */
3439                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3440                         "==UNKNOWN\n",
3441                         card->gdev->dev.kobj.name,
3442                         access_ctrl_req->subcmd_code,
3443                         cmd->data.setadapterparms.hdr.return_code);
3444
3445                 /* ensure isolation mode is "none" */
3446                 card->options.isolation = ISOLATION_MODE_NONE;
3447                 rc = 0;
3448                 break;
3449         }
3450         }
3451         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3452         return rc;
3453 }
3454
3455 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3456                 enum qeth_ipa_isolation_modes isolation)
3457 {
3458         int rc;
3459         struct qeth_cmd_buffer *iob;
3460         struct qeth_ipa_cmd *cmd;
3461         struct qeth_set_access_ctrl *access_ctrl_req;
3462
3463         QETH_DBF_TEXT(TRACE, 4, "setacctl");
3464
3465         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3466         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3467
3468         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3469                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3470                                    sizeof(struct qeth_set_access_ctrl));
3471         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3472         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3473         access_ctrl_req->subcmd_code = isolation;
3474
3475         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3476                                NULL);
3477         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3478         return rc;
3479 }
3480
3481 int qeth_set_access_ctrl_online(struct qeth_card *card)
3482 {
3483         int rc = 0;
3484
3485         QETH_DBF_TEXT(TRACE, 4, "setactlo");
3486
3487         if (card->info.type == QETH_CARD_TYPE_OSAE &&
3488             qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3489                 rc = qeth_setadpparms_set_access_ctrl(card,
3490                         card->options.isolation);
3491                 if (rc) {
3492                         QETH_DBF_MESSAGE(3,
3493                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed",
3494                                 card->gdev->dev.kobj.name,
3495                                 rc);
3496                 }
3497         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3498                 card->options.isolation = ISOLATION_MODE_NONE;
3499
3500                 dev_err(&card->gdev->dev, "Adapter does not "
3501                         "support QDIO data connection isolation\n");
3502                 rc = -EOPNOTSUPP;
3503         }
3504         return rc;
3505 }
3506 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3507
3508 void qeth_tx_timeout(struct net_device *dev)
3509 {
3510         struct qeth_card *card;
3511
3512         card = dev->ml_priv;
3513         card->stats.tx_errors++;
3514         qeth_schedule_recovery(card);
3515 }
3516 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3517
3518 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3519 {
3520         struct qeth_card *card = dev->ml_priv;
3521         int rc = 0;
3522
3523         switch (regnum) {
3524         case MII_BMCR: /* Basic mode control register */
3525                 rc = BMCR_FULLDPLX;
3526                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3527                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3528                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3529                         rc |= BMCR_SPEED100;
3530                 break;
3531         case MII_BMSR: /* Basic mode status register */
3532                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3533                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3534                      BMSR_100BASE4;
3535                 break;
3536         case MII_PHYSID1: /* PHYS ID 1 */
3537                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3538                      dev->dev_addr[2];
3539                 rc = (rc >> 5) & 0xFFFF;
3540                 break;
3541         case MII_PHYSID2: /* PHYS ID 2 */
3542                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3543                 break;
3544         case MII_ADVERTISE: /* Advertisement control reg */
3545                 rc = ADVERTISE_ALL;
3546                 break;
3547         case MII_LPA: /* Link partner ability reg */
3548                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3549                      LPA_100BASE4 | LPA_LPACK;
3550                 break;
3551         case MII_EXPANSION: /* Expansion register */
3552                 break;
3553         case MII_DCOUNTER: /* disconnect counter */
3554                 break;
3555         case MII_FCSCOUNTER: /* false carrier counter */
3556                 break;
3557         case MII_NWAYTEST: /* N-way auto-neg test register */
3558                 break;
3559         case MII_RERRCOUNTER: /* rx error counter */
3560                 rc = card->stats.rx_errors;
3561                 break;
3562         case MII_SREVISION: /* silicon revision */
3563                 break;
3564         case MII_RESV1: /* reserved 1 */
3565                 break;
3566         case MII_LBRERROR: /* loopback, rx, bypass error */
3567                 break;
3568         case MII_PHYADDR: /* physical address */
3569                 break;
3570         case MII_RESV2: /* reserved 2 */
3571                 break;
3572         case MII_TPISTATUS: /* TPI status for 10mbps */
3573                 break;
3574         case MII_NCONFIG: /* network interface config */
3575                 break;
3576         default:
3577                 break;
3578         }
3579         return rc;
3580 }
3581 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3582
3583 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3584                 struct qeth_cmd_buffer *iob, int len,
3585                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3586                         unsigned long),
3587                 void *reply_param)
3588 {
3589         u16 s1, s2;
3590
3591         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3592
3593         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3594         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3595                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3596         /* adjust PDU length fields in IPA_PDU_HEADER */
3597         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3598         s2 = (u32) len;
3599         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3600         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3601         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3602         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3603         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3604                                       reply_cb, reply_param);
3605 }
3606
3607 static int qeth_snmp_command_cb(struct qeth_card *card,
3608                 struct qeth_reply *reply, unsigned long sdata)
3609 {
3610         struct qeth_ipa_cmd *cmd;
3611         struct qeth_arp_query_info *qinfo;
3612         struct qeth_snmp_cmd *snmp;
3613         unsigned char *data;
3614         __u16 data_len;
3615
3616         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3617
3618         cmd = (struct qeth_ipa_cmd *) sdata;
3619         data = (unsigned char *)((char *)cmd - reply->offset);
3620         qinfo = (struct qeth_arp_query_info *) reply->param;
3621         snmp = &cmd->data.setadapterparms.data.snmp;
3622
3623         if (cmd->hdr.return_code) {
3624                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3625                 return 0;
3626         }
3627         if (cmd->data.setadapterparms.hdr.return_code) {
3628                 cmd->hdr.return_code =
3629                         cmd->data.setadapterparms.hdr.return_code;
3630                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3631                 return 0;
3632         }
3633         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3634         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3635                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3636         else
3637                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3638
3639         /* check if there is enough room in userspace */
3640         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3641                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3642                 cmd->hdr.return_code = -ENOMEM;
3643                 return 0;
3644         }
3645         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3646                        cmd->data.setadapterparms.hdr.used_total);
3647         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3648                 cmd->data.setadapterparms.hdr.seq_no);
3649         /*copy entries to user buffer*/
3650         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3651                 memcpy(qinfo->udata + qinfo->udata_offset,
3652                        (char *)snmp,
3653                        data_len + offsetof(struct qeth_snmp_cmd, data));
3654                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3655         } else {
3656                 memcpy(qinfo->udata + qinfo->udata_offset,
3657                        (char *)&snmp->request, data_len);
3658         }
3659         qinfo->udata_offset += data_len;
3660         /* check if all replies received ... */
3661                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3662                                cmd->data.setadapterparms.hdr.used_total);
3663                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3664                                cmd->data.setadapterparms.hdr.seq_no);
3665         if (cmd->data.setadapterparms.hdr.seq_no <
3666             cmd->data.setadapterparms.hdr.used_total)
3667                 return 1;
3668         return 0;
3669 }
3670
3671 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3672 {
3673         struct qeth_cmd_buffer *iob;
3674         struct qeth_ipa_cmd *cmd;
3675         struct qeth_snmp_ureq *ureq;
3676         int req_len;
3677         struct qeth_arp_query_info qinfo = {0, };
3678         int rc = 0;
3679
3680         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3681
3682         if (card->info.guestlan)
3683                 return -EOPNOTSUPP;
3684
3685         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3686             (!card->options.layer2)) {
3687                 return -EOPNOTSUPP;
3688         }
3689         /* skip 4 bytes (data_len struct member) to get req_len */
3690         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3691                 return -EFAULT;
3692         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3693         if (!ureq) {
3694                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3695                 return -ENOMEM;
3696         }
3697         if (copy_from_user(ureq, udata,
3698                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3699                 kfree(ureq);
3700                 return -EFAULT;
3701         }
3702         qinfo.udata_len = ureq->hdr.data_len;
3703         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3704         if (!qinfo.udata) {
3705                 kfree(ureq);
3706                 return -ENOMEM;
3707         }
3708         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3709
3710         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3711                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3712         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3713         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3714         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3715                                     qeth_snmp_command_cb, (void *)&qinfo);
3716         if (rc)
3717                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3718                            QETH_CARD_IFNAME(card), rc);
3719         else {
3720                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3721                         rc = -EFAULT;
3722         }
3723
3724         kfree(ureq);
3725         kfree(qinfo.udata);
3726         return rc;
3727 }
3728 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3729
3730 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3731 {
3732         switch (card->info.type) {
3733         case QETH_CARD_TYPE_IQD:
3734                 return 2;
3735         default:
3736                 return 0;
3737         }
3738 }
3739
3740 static int qeth_qdio_establish(struct qeth_card *card)
3741 {
3742         struct qdio_initialize init_data;
3743         char *qib_param_field;
3744         struct qdio_buffer **in_sbal_ptrs;
3745         struct qdio_buffer **out_sbal_ptrs;
3746         int i, j, k;
3747         int rc = 0;
3748
3749         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3750
3751         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3752                               GFP_KERNEL);
3753         if (!qib_param_field)
3754                 return -ENOMEM;
3755
3756         qeth_create_qib_param_field(card, qib_param_field);
3757         qeth_create_qib_param_field_blkt(card, qib_param_field);
3758
3759         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3760                                GFP_KERNEL);
3761         if (!in_sbal_ptrs) {
3762                 kfree(qib_param_field);
3763                 return -ENOMEM;
3764         }
3765         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3766                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3767                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3768
3769         out_sbal_ptrs =
3770                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3771                         sizeof(void *), GFP_KERNEL);
3772         if (!out_sbal_ptrs) {
3773                 kfree(in_sbal_ptrs);
3774                 kfree(qib_param_field);
3775                 return -ENOMEM;
3776         }
3777         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3778                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3779                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3780                                 card->qdio.out_qs[i]->bufs[j].buffer);
3781                 }
3782
3783         memset(&init_data, 0, sizeof(struct qdio_initialize));
3784         init_data.cdev                   = CARD_DDEV(card);
3785         init_data.q_format               = qeth_get_qdio_q_format(card);
3786         init_data.qib_param_field_format = 0;
3787         init_data.qib_param_field        = qib_param_field;
3788         init_data.no_input_qs            = 1;
3789         init_data.no_output_qs           = card->qdio.no_out_queues;
3790         init_data.input_handler          = card->discipline.input_handler;
3791         init_data.output_handler         = card->discipline.output_handler;
3792         init_data.int_parm               = (unsigned long) card;
3793         init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
3794                                            QDIO_OUTBOUND_0COPY_SBALS |
3795                                            QDIO_USE_OUTBOUND_PCIS;
3796         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3797         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3798
3799         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3800                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3801                 rc = qdio_initialize(&init_data);
3802                 if (rc)
3803                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3804         }
3805         kfree(out_sbal_ptrs);
3806         kfree(in_sbal_ptrs);
3807         kfree(qib_param_field);
3808         return rc;
3809 }
3810
3811 static void qeth_core_free_card(struct qeth_card *card)
3812 {
3813
3814         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3815         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3816         qeth_clean_channel(&card->read);
3817         qeth_clean_channel(&card->write);
3818         if (card->dev)
3819                 free_netdev(card->dev);
3820         kfree(card->ip_tbd_list);
3821         qeth_free_qdio_buffers(card);
3822         unregister_service_level(&card->qeth_service_level);
3823         kfree(card);
3824 }
3825
3826 static struct ccw_device_id qeth_ids[] = {
3827         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3828         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3829         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3830         {},
3831 };
3832 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3833
3834 static struct ccw_driver qeth_ccw_driver = {
3835         .name = "qeth",
3836         .ids = qeth_ids,
3837         .probe = ccwgroup_probe_ccwdev,
3838         .remove = ccwgroup_remove_ccwdev,
3839 };
3840
3841 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3842                                 unsigned long driver_id)
3843 {
3844         return ccwgroup_create_from_string(root_dev, driver_id,
3845                                            &qeth_ccw_driver, 3, buf);
3846 }
3847
3848 int qeth_core_hardsetup_card(struct qeth_card *card)
3849 {
3850         struct qdio_ssqd_desc *ssqd;
3851         int retries = 0;
3852         int mpno = 0;
3853         int rc;
3854
3855         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3856         atomic_set(&card->force_alloc_skb, 0);
3857 retry:
3858         if (retries)
3859                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3860                         dev_name(&card->gdev->dev));
3861         ccw_device_set_offline(CARD_DDEV(card));
3862         ccw_device_set_offline(CARD_WDEV(card));
3863         ccw_device_set_offline(CARD_RDEV(card));
3864         rc = ccw_device_set_online(CARD_RDEV(card));
3865         if (rc)
3866                 goto retriable;
3867         rc = ccw_device_set_online(CARD_WDEV(card));
3868         if (rc)
3869                 goto retriable;
3870         rc = ccw_device_set_online(CARD_DDEV(card));
3871         if (rc)
3872                 goto retriable;
3873         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3874 retriable:
3875         if (rc == -ERESTARTSYS) {
3876                 QETH_DBF_TEXT(SETUP, 2, "break1");
3877                 return rc;
3878         } else if (rc) {
3879                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3880                 if (++retries > 3)
3881                         goto out;
3882                 else
3883                         goto retry;
3884         }
3885
3886         rc = qeth_get_unitaddr(card);
3887         if (rc) {
3888                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3889                 return rc;
3890         }
3891
3892         ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL);
3893         if (!ssqd) {
3894                 rc = -ENOMEM;
3895                 goto out;
3896         }
3897         rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd);
3898         if (rc == 0)
3899                 mpno = ssqd->pcnt;
3900         kfree(ssqd);
3901
3902         if (mpno)
3903                 mpno = min(mpno - 1, QETH_MAX_PORTNO);
3904         if (card->info.portno > mpno) {
3905                 QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d"
3906                         "\n.", CARD_BUS_ID(card), card->info.portno);
3907                 rc = -ENODEV;
3908                 goto out;
3909         }
3910         qeth_init_tokens(card);
3911         qeth_init_func_level(card);
3912         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3913         if (rc == -ERESTARTSYS) {
3914                 QETH_DBF_TEXT(SETUP, 2, "break2");
3915                 return rc;
3916         } else if (rc) {
3917                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3918                 if (--retries < 0)
3919                         goto out;
3920                 else
3921                         goto retry;
3922         }
3923         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3924         if (rc == -ERESTARTSYS) {
3925                 QETH_DBF_TEXT(SETUP, 2, "break3");
3926                 return rc;
3927         } else if (rc) {
3928                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3929                 if (--retries < 0)
3930                         goto out;
3931                 else
3932                         goto retry;
3933         }
3934         rc = qeth_mpc_initialize(card);
3935         if (rc) {
3936                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3937                 goto out;
3938         }
3939         return 0;
3940 out:
3941         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3942                 "an error on the device\n");
3943         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3944                 dev_name(&card->gdev->dev), rc);
3945         return rc;
3946 }
3947 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3948
3949 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3950                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3951 {
3952         struct page *page = virt_to_page(element->addr);
3953         if (*pskb == NULL) {
3954                 /* the upper protocol layers assume that there is data in the
3955                  * skb itself. Copy a small amount (64 bytes) to make them
3956                  * happy. */
3957                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3958                 if (!(*pskb))
3959                         return -ENOMEM;
3960                 skb_reserve(*pskb, ETH_HLEN);
3961                 if (data_len <= 64) {
3962                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3963                                 data_len);
3964                 } else {
3965                         get_page(page);
3966                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3967                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3968                                 data_len - 64);
3969                         (*pskb)->data_len += data_len - 64;
3970                         (*pskb)->len      += data_len - 64;
3971                         (*pskb)->truesize += data_len - 64;
3972                         (*pfrag)++;
3973                 }
3974         } else {
3975                 get_page(page);
3976                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3977                 (*pskb)->data_len += data_len;
3978                 (*pskb)->len      += data_len;
3979                 (*pskb)->truesize += data_len;
3980                 (*pfrag)++;
3981         }
3982         return 0;
3983 }
3984
3985 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3986                 struct qdio_buffer *buffer,
3987                 struct qdio_buffer_element **__element, int *__offset,
3988                 struct qeth_hdr **hdr)
3989 {
3990         struct qdio_buffer_element *element = *__element;
3991         int offset = *__offset;
3992         struct sk_buff *skb = NULL;
3993         int skb_len;
3994         void *data_ptr;
3995         int data_len;
3996         int headroom = 0;
3997         int use_rx_sg = 0;
3998         int frag = 0;
3999
4000         /* qeth_hdr must not cross element boundaries */
4001         if (element->length < offset + sizeof(struct qeth_hdr)) {
4002                 if (qeth_is_last_sbale(element))
4003                         return NULL;
4004                 element++;
4005                 offset = 0;
4006                 if (element->length < sizeof(struct qeth_hdr))
4007                         return NULL;
4008         }
4009         *hdr = element->addr + offset;
4010
4011         offset += sizeof(struct qeth_hdr);
4012         if (card->options.layer2) {
4013                 if (card->info.type == QETH_CARD_TYPE_OSN) {
4014                         skb_len = (*hdr)->hdr.osn.pdu_length;
4015                         headroom = sizeof(struct qeth_hdr);
4016                 } else {
4017                         skb_len = (*hdr)->hdr.l2.pkt_length;
4018                 }
4019         } else {
4020                 skb_len = (*hdr)->hdr.l3.length;
4021                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4022                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4023                         headroom = TR_HLEN;
4024                 else
4025                         headroom = ETH_HLEN;
4026         }
4027
4028         if (!skb_len)
4029                 return NULL;
4030
4031         if ((skb_len >= card->options.rx_sg_cb) &&
4032             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4033             (!atomic_read(&card->force_alloc_skb))) {
4034                 use_rx_sg = 1;
4035         } else {
4036                 skb = dev_alloc_skb(skb_len + headroom);
4037                 if (!skb)
4038                         goto no_mem;
4039                 if (headroom)
4040                         skb_reserve(skb, headroom);
4041         }
4042
4043         data_ptr = element->addr + offset;
4044         while (skb_len) {
4045                 data_len = min(skb_len, (int)(element->length - offset));
4046                 if (data_len) {
4047                         if (use_rx_sg) {
4048                                 if (qeth_create_skb_frag(element, &skb, offset,
4049                                     &frag, data_len))
4050                                         goto no_mem;
4051                         } else {
4052                                 memcpy(skb_put(skb, data_len), data_ptr,
4053                                         data_len);
4054                         }
4055                 }
4056                 skb_len -= data_len;
4057                 if (skb_len) {
4058                         if (qeth_is_last_sbale(element)) {
4059                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4060                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4061                                         CARD_BUS_ID(card));
4062                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4063                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4064                                         CARD_BUS_ID(card));
4065                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4066                                 dev_kfree_skb_any(skb);
4067                                 card->stats.rx_errors++;
4068                                 return NULL;
4069                         }
4070                         element++;
4071                         offset = 0;
4072                         data_ptr = element->addr;
4073                 } else {
4074                         offset += data_len;
4075                 }
4076         }
4077         *__element = element;
4078         *__offset = offset;
4079         if (use_rx_sg && card->options.performance_stats) {
4080                 card->perf_stats.sg_skbs_rx++;
4081                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4082         }
4083         return skb;
4084 no_mem:
4085         if (net_ratelimit()) {
4086                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4087                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4088         }
4089         card->stats.rx_dropped++;
4090         return NULL;
4091 }
4092 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4093
4094 static void qeth_unregister_dbf_views(void)
4095 {
4096         int x;
4097         for (x = 0; x < QETH_DBF_INFOS; x++) {
4098                 debug_unregister(qeth_dbf[x].id);
4099                 qeth_dbf[x].id = NULL;
4100         }
4101 }
4102
4103 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
4104 {
4105         char dbf_txt_buf[32];
4106         va_list args;
4107
4108         if (level > (qeth_dbf[dbf_nix].id)->level)
4109                 return;
4110         va_start(args, fmt);
4111         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4112         va_end(args);
4113         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4114 }
4115 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4116
4117 static int qeth_register_dbf_views(void)
4118 {
4119         int ret;
4120         int x;
4121
4122         for (x = 0; x < QETH_DBF_INFOS; x++) {
4123                 /* register the areas */
4124                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4125                                                 qeth_dbf[x].pages,
4126                                                 qeth_dbf[x].areas,
4127                                                 qeth_dbf[x].len);
4128                 if (qeth_dbf[x].id == NULL) {
4129                         qeth_unregister_dbf_views();
4130                         return -ENOMEM;
4131                 }
4132
4133                 /* register a view */
4134                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4135                 if (ret) {
4136                         qeth_unregister_dbf_views();
4137                         return ret;
4138                 }
4139
4140                 /* set a passing level */
4141                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4142         }
4143
4144         return 0;
4145 }
4146
4147 int qeth_core_load_discipline(struct qeth_card *card,
4148                 enum qeth_discipline_id discipline)
4149 {
4150         int rc = 0;
4151         switch (discipline) {
4152         case QETH_DISCIPLINE_LAYER3:
4153                 card->discipline.ccwgdriver = try_then_request_module(
4154                         symbol_get(qeth_l3_ccwgroup_driver),
4155                         "qeth_l3");
4156                 break;
4157         case QETH_DISCIPLINE_LAYER2:
4158                 card->discipline.ccwgdriver = try_then_request_module(
4159                         symbol_get(qeth_l2_ccwgroup_driver),
4160                         "qeth_l2");
4161                 break;
4162         }
4163         if (!card->discipline.ccwgdriver) {
4164                 dev_err(&card->gdev->dev, "There is no kernel module to "
4165                         "support discipline %d\n", discipline);
4166                 rc = -EINVAL;
4167         }
4168         return rc;
4169 }
4170
4171 void qeth_core_free_discipline(struct qeth_card *card)
4172 {
4173         if (card->options.layer2)
4174                 symbol_put(qeth_l2_ccwgroup_driver);
4175         else
4176                 symbol_put(qeth_l3_ccwgroup_driver);
4177         card->discipline.ccwgdriver = NULL;
4178 }
4179
4180 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4181 {
4182         struct qeth_card *card;
4183         struct device *dev;
4184         int rc;
4185         unsigned long flags;
4186
4187         QETH_DBF_TEXT(SETUP, 2, "probedev");
4188
4189         dev = &gdev->dev;
4190         if (!get_device(dev))
4191                 return -ENODEV;
4192
4193         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4194
4195         card = qeth_alloc_card();
4196         if (!card) {
4197                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4198                 rc = -ENOMEM;
4199                 goto err_dev;
4200         }
4201         card->read.ccwdev  = gdev->cdev[0];
4202         card->write.ccwdev = gdev->cdev[1];
4203         card->data.ccwdev  = gdev->cdev[2];
4204         dev_set_drvdata(&gdev->dev, card);
4205         card->gdev = gdev;
4206         gdev->cdev[0]->handler = qeth_irq;
4207         gdev->cdev[1]->handler = qeth_irq;
4208         gdev->cdev[2]->handler = qeth_irq;
4209
4210         rc = qeth_determine_card_type(card);
4211         if (rc) {
4212                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4213                 goto err_card;
4214         }
4215         rc = qeth_setup_card(card);
4216         if (rc) {
4217                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4218                 goto err_card;
4219         }
4220
4221         if (card->info.type == QETH_CARD_TYPE_OSN) {
4222                 rc = qeth_core_create_osn_attributes(dev);
4223                 if (rc)
4224                         goto err_card;
4225                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4226                 if (rc) {
4227                         qeth_core_remove_osn_attributes(dev);
4228                         goto err_card;
4229                 }
4230                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4231                 if (rc) {
4232                         qeth_core_free_discipline(card);
4233                         qeth_core_remove_osn_attributes(dev);
4234                         goto err_card;
4235                 }
4236         } else {
4237                 rc = qeth_core_create_device_attributes(dev);
4238                 if (rc)
4239                         goto err_card;
4240         }
4241
4242         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4243         list_add_tail(&card->list, &qeth_core_card_list.list);
4244         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4245         return 0;
4246
4247 err_card:
4248         qeth_core_free_card(card);
4249 err_dev:
4250         put_device(dev);
4251         return rc;
4252 }
4253
4254 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4255 {
4256         unsigned long flags;
4257         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4258
4259         QETH_DBF_TEXT(SETUP, 2, "removedv");
4260         if (card->discipline.ccwgdriver) {
4261                 card->discipline.ccwgdriver->remove(gdev);
4262                 qeth_core_free_discipline(card);
4263         }
4264
4265         if (card->info.type == QETH_CARD_TYPE_OSN) {
4266                 qeth_core_remove_osn_attributes(&gdev->dev);
4267         } else {
4268                 qeth_core_remove_device_attributes(&gdev->dev);
4269         }
4270         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4271         list_del(&card->list);
4272         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4273         qeth_core_free_card(card);
4274         dev_set_drvdata(&gdev->dev, NULL);
4275         put_device(&gdev->dev);
4276         return;
4277 }
4278
4279 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4280 {
4281         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4282         int rc = 0;
4283         int def_discipline;
4284
4285         if (!card->discipline.ccwgdriver) {
4286                 if (card->info.type == QETH_CARD_TYPE_IQD)
4287                         def_discipline = QETH_DISCIPLINE_LAYER3;
4288                 else
4289                         def_discipline = QETH_DISCIPLINE_LAYER2;
4290                 rc = qeth_core_load_discipline(card, def_discipline);
4291                 if (rc)
4292                         goto err;
4293                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4294                 if (rc)
4295                         goto err;
4296         }
4297         rc = card->discipline.ccwgdriver->set_online(gdev);
4298 err:
4299         return rc;
4300 }
4301
4302 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4303 {
4304         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4305         return card->discipline.ccwgdriver->set_offline(gdev);
4306 }
4307
4308 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4309 {
4310         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4311         if (card->discipline.ccwgdriver &&
4312             card->discipline.ccwgdriver->shutdown)
4313                 card->discipline.ccwgdriver->shutdown(gdev);
4314 }
4315
4316 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4317 {
4318         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4319         if (card->discipline.ccwgdriver &&
4320             card->discipline.ccwgdriver->prepare)
4321                 return card->discipline.ccwgdriver->prepare(gdev);
4322         return 0;
4323 }
4324
4325 static void qeth_core_complete(struct ccwgroup_device *gdev)
4326 {
4327         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4328         if (card->discipline.ccwgdriver &&
4329             card->discipline.ccwgdriver->complete)
4330                 card->discipline.ccwgdriver->complete(gdev);
4331 }
4332
4333 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4334 {
4335         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4336         if (card->discipline.ccwgdriver &&
4337             card->discipline.ccwgdriver->freeze)
4338                 return card->discipline.ccwgdriver->freeze(gdev);
4339         return 0;
4340 }
4341
4342 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4343 {
4344         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4345         if (card->discipline.ccwgdriver &&
4346             card->discipline.ccwgdriver->thaw)
4347                 return card->discipline.ccwgdriver->thaw(gdev);
4348         return 0;
4349 }
4350
4351 static int qeth_core_restore(struct ccwgroup_device *gdev)
4352 {
4353         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4354         if (card->discipline.ccwgdriver &&
4355             card->discipline.ccwgdriver->restore)
4356                 return card->discipline.ccwgdriver->restore(gdev);
4357         return 0;
4358 }
4359
4360 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4361         .owner = THIS_MODULE,
4362         .name = "qeth",
4363         .driver_id = 0xD8C5E3C8,
4364         .probe = qeth_core_probe_device,
4365         .remove = qeth_core_remove_device,
4366         .set_online = qeth_core_set_online,
4367         .set_offline = qeth_core_set_offline,
4368         .shutdown = qeth_core_shutdown,
4369         .prepare = qeth_core_prepare,
4370         .complete = qeth_core_complete,
4371         .freeze = qeth_core_freeze,
4372         .thaw = qeth_core_thaw,
4373         .restore = qeth_core_restore,
4374 };
4375
4376 static ssize_t
4377 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4378                            size_t count)
4379 {
4380         int err;
4381         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4382                                         qeth_core_ccwgroup_driver.driver_id);
4383         if (err)
4384                 return err;
4385         else
4386                 return count;
4387 }
4388
4389 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4390
4391 static struct {
4392         const char str[ETH_GSTRING_LEN];
4393 } qeth_ethtool_stats_keys[] = {
4394 /*  0 */{"rx skbs"},
4395         {"rx buffers"},
4396         {"tx skbs"},
4397         {"tx buffers"},
4398         {"tx skbs no packing"},
4399         {"tx buffers no packing"},
4400         {"tx skbs packing"},
4401         {"tx buffers packing"},
4402         {"tx sg skbs"},
4403         {"tx sg frags"},
4404 /* 10 */{"rx sg skbs"},
4405         {"rx sg frags"},
4406         {"rx sg page allocs"},
4407         {"tx large kbytes"},
4408         {"tx large count"},
4409         {"tx pk state ch n->p"},
4410         {"tx pk state ch p->n"},
4411         {"tx pk watermark low"},
4412         {"tx pk watermark high"},
4413         {"queue 0 buffer usage"},
4414 /* 20 */{"queue 1 buffer usage"},
4415         {"queue 2 buffer usage"},
4416         {"queue 3 buffer usage"},
4417         {"rx handler time"},
4418         {"rx handler count"},
4419         {"rx do_QDIO time"},
4420         {"rx do_QDIO count"},
4421         {"tx handler time"},
4422         {"tx handler count"},
4423         {"tx time"},
4424 /* 30 */{"tx count"},
4425         {"tx do_QDIO time"},
4426         {"tx do_QDIO count"},
4427         {"tx csum"},
4428         {"tx lin"},
4429 };
4430
4431 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4432 {
4433         switch (stringset) {
4434         case ETH_SS_STATS:
4435                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4436         default:
4437                 return -EINVAL;
4438         }
4439 }
4440 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4441
4442 void qeth_core_get_ethtool_stats(struct net_device *dev,
4443                 struct ethtool_stats *stats, u64 *data)
4444 {
4445         struct qeth_card *card = dev->ml_priv;
4446         data[0] = card->stats.rx_packets -
4447                                 card->perf_stats.initial_rx_packets;
4448         data[1] = card->perf_stats.bufs_rec;
4449         data[2] = card->stats.tx_packets -
4450                                 card->perf_stats.initial_tx_packets;
4451         data[3] = card->perf_stats.bufs_sent;
4452         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4453                         - card->perf_stats.skbs_sent_pack;
4454         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4455         data[6] = card->perf_stats.skbs_sent_pack;
4456         data[7] = card->perf_stats.bufs_sent_pack;
4457         data[8] = card->perf_stats.sg_skbs_sent;
4458         data[9] = card->perf_stats.sg_frags_sent;
4459         data[10] = card->perf_stats.sg_skbs_rx;
4460         data[11] = card->perf_stats.sg_frags_rx;
4461         data[12] = card->perf_stats.sg_alloc_page_rx;
4462         data[13] = (card->perf_stats.large_send_bytes >> 10);
4463         data[14] = card->perf_stats.large_send_cnt;
4464         data[15] = card->perf_stats.sc_dp_p;
4465         data[16] = card->perf_stats.sc_p_dp;
4466         data[17] = QETH_LOW_WATERMARK_PACK;
4467         data[18] = QETH_HIGH_WATERMARK_PACK;
4468         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4469         data[20] = (card->qdio.no_out_queues > 1) ?
4470                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4471         data[21] = (card->qdio.no_out_queues > 2) ?
4472                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4473         data[22] = (card->qdio.no_out_queues > 3) ?
4474                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4475         data[23] = card->perf_stats.inbound_time;
4476         data[24] = card->perf_stats.inbound_cnt;
4477         data[25] = card->perf_stats.inbound_do_qdio_time;
4478         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4479         data[27] = card->perf_stats.outbound_handler_time;
4480         data[28] = card->perf_stats.outbound_handler_cnt;
4481         data[29] = card->perf_stats.outbound_time;
4482         data[30] = card->perf_stats.outbound_cnt;
4483         data[31] = card->perf_stats.outbound_do_qdio_time;
4484         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4485         data[33] = card->perf_stats.tx_csum;
4486         data[34] = card->perf_stats.tx_lin;
4487 }
4488 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4489
4490 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4491 {
4492         switch (stringset) {
4493         case ETH_SS_STATS:
4494                 memcpy(data, &qeth_ethtool_stats_keys,
4495                         sizeof(qeth_ethtool_stats_keys));
4496                 break;
4497         default:
4498                 WARN_ON(1);
4499                 break;
4500         }
4501 }
4502 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4503
4504 void qeth_core_get_drvinfo(struct net_device *dev,
4505                 struct ethtool_drvinfo *info)
4506 {
4507         struct qeth_card *card = dev->ml_priv;
4508         if (card->options.layer2)
4509                 strcpy(info->driver, "qeth_l2");
4510         else
4511                 strcpy(info->driver, "qeth_l3");
4512
4513         strcpy(info->version, "1.0");
4514         strcpy(info->fw_version, card->info.mcl_level);
4515         sprintf(info->bus_info, "%s/%s/%s",
4516                         CARD_RDEV_ID(card),
4517                         CARD_WDEV_ID(card),
4518                         CARD_DDEV_ID(card));
4519 }
4520 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4521
4522 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4523                                         struct ethtool_cmd *ecmd)
4524 {
4525         struct qeth_card *card = netdev->ml_priv;
4526         enum qeth_link_types link_type;
4527
4528         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4529                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4530         else
4531                 link_type = card->info.link_type;
4532
4533         ecmd->transceiver = XCVR_INTERNAL;
4534         ecmd->supported = SUPPORTED_Autoneg;
4535         ecmd->advertising = ADVERTISED_Autoneg;
4536         ecmd->duplex = DUPLEX_FULL;
4537         ecmd->autoneg = AUTONEG_ENABLE;
4538
4539         switch (link_type) {
4540         case QETH_LINK_TYPE_FAST_ETH:
4541         case QETH_LINK_TYPE_LANE_ETH100:
4542                 ecmd->supported |= SUPPORTED_10baseT_Half |
4543                                         SUPPORTED_10baseT_Full |
4544                                         SUPPORTED_100baseT_Half |
4545                                         SUPPORTED_100baseT_Full |
4546                                         SUPPORTED_TP;
4547                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4548                                         ADVERTISED_10baseT_Full |
4549                                         ADVERTISED_100baseT_Half |
4550                                         ADVERTISED_100baseT_Full |
4551                                         ADVERTISED_TP;
4552                 ecmd->speed = SPEED_100;
4553                 ecmd->port = PORT_TP;
4554                 break;
4555
4556         case QETH_LINK_TYPE_GBIT_ETH:
4557         case QETH_LINK_TYPE_LANE_ETH1000:
4558                 ecmd->supported |= SUPPORTED_10baseT_Half |
4559                                         SUPPORTED_10baseT_Full |
4560                                         SUPPORTED_100baseT_Half |
4561                                         SUPPORTED_100baseT_Full |
4562                                         SUPPORTED_1000baseT_Half |
4563                                         SUPPORTED_1000baseT_Full |
4564                                         SUPPORTED_FIBRE;
4565                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4566                                         ADVERTISED_10baseT_Full |
4567                                         ADVERTISED_100baseT_Half |
4568                                         ADVERTISED_100baseT_Full |
4569                                         ADVERTISED_1000baseT_Half |
4570                                         ADVERTISED_1000baseT_Full |
4571                                         ADVERTISED_FIBRE;
4572                 ecmd->speed = SPEED_1000;
4573                 ecmd->port = PORT_FIBRE;
4574                 break;
4575
4576         case QETH_LINK_TYPE_10GBIT_ETH:
4577                 ecmd->supported |= SUPPORTED_10baseT_Half |
4578                                         SUPPORTED_10baseT_Full |
4579                                         SUPPORTED_100baseT_Half |
4580                                         SUPPORTED_100baseT_Full |
4581                                         SUPPORTED_1000baseT_Half |
4582                                         SUPPORTED_1000baseT_Full |
4583                                         SUPPORTED_10000baseT_Full |
4584                                         SUPPORTED_FIBRE;
4585                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4586                                         ADVERTISED_10baseT_Full |
4587                                         ADVERTISED_100baseT_Half |
4588                                         ADVERTISED_100baseT_Full |
4589                                         ADVERTISED_1000baseT_Half |
4590                                         ADVERTISED_1000baseT_Full |
4591                                         ADVERTISED_10000baseT_Full |
4592                                         ADVERTISED_FIBRE;
4593                 ecmd->speed = SPEED_10000;
4594                 ecmd->port = PORT_FIBRE;
4595                 break;
4596
4597         default:
4598                 ecmd->supported |= SUPPORTED_10baseT_Half |
4599                                         SUPPORTED_10baseT_Full |
4600                                         SUPPORTED_TP;
4601                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4602                                         ADVERTISED_10baseT_Full |
4603                                         ADVERTISED_TP;
4604                 ecmd->speed = SPEED_10;
4605                 ecmd->port = PORT_TP;
4606         }
4607
4608         return 0;
4609 }
4610 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4611
4612 static int __init qeth_core_init(void)
4613 {
4614         int rc;
4615
4616         pr_info("loading core functions\n");
4617         INIT_LIST_HEAD(&qeth_core_card_list.list);
4618         rwlock_init(&qeth_core_card_list.rwlock);
4619
4620         rc = qeth_register_dbf_views();
4621         if (rc)
4622                 goto out_err;
4623         rc = ccw_driver_register(&qeth_ccw_driver);
4624         if (rc)
4625                 goto ccw_err;
4626         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4627         if (rc)
4628                 goto ccwgroup_err;
4629         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4630                                 &driver_attr_group);
4631         if (rc)
4632                 goto driver_err;
4633         qeth_core_root_dev = root_device_register("qeth");
4634         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4635         if (rc)
4636                 goto register_err;
4637
4638         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4639                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4640         if (!qeth_core_header_cache) {
4641                 rc = -ENOMEM;
4642                 goto slab_err;
4643         }
4644
4645         return 0;
4646 slab_err:
4647         root_device_unregister(qeth_core_root_dev);
4648 register_err:
4649         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4650                            &driver_attr_group);
4651 driver_err:
4652         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4653 ccwgroup_err:
4654         ccw_driver_unregister(&qeth_ccw_driver);
4655 ccw_err:
4656         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4657         qeth_unregister_dbf_views();
4658 out_err:
4659         pr_err("Initializing the qeth device driver failed\n");
4660         return rc;
4661 }
4662
4663 static void __exit qeth_core_exit(void)
4664 {
4665         root_device_unregister(qeth_core_root_dev);
4666         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4667                            &driver_attr_group);
4668         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4669         ccw_driver_unregister(&qeth_ccw_driver);
4670         kmem_cache_destroy(qeth_core_header_cache);
4671         qeth_unregister_dbf_views();
4672         pr_info("core functions removed\n");
4673 }
4674
4675 module_init(qeth_core_init);
4676 module_exit(qeth_core_exit);
4677 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4678 MODULE_DESCRIPTION("qeth core functions");
4679 MODULE_LICENSE("GPL");