drivers/s390/net/qeth_core_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/ip.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21 #include <linux/slab.h>
  22 #include <net/iucv/af_iucv.h>
  23 #include <net/dsfield.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/chpid.h>
  27 #include <asm/io.h>
  28 #include <asm/sysinfo.h>
  29 #include <asm/compat.h>
  30
  31 #include "qeth_core.h"
  32
  33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  34         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  35         /*                   N  P  A    M  L  V                      H  */
  36         [QETH_DBF_SETUP] = {"qeth_setup",
  37                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  39                             &debug_sprintf_view, NULL},
  40         [QETH_DBF_CTRL]  = {"qeth_control",
  41                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  42 };
  43 EXPORT_SYMBOL_GPL(qeth_dbf);
  44
  45 struct qeth_card_list_struct qeth_core_card_list;
  46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  47 struct kmem_cache *qeth_core_header_cache;
  48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  49 static struct kmem_cache *qeth_qdio_outbuf_cache;
  50
  51 static struct device *qeth_core_root_dev;
  52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  53 static struct lock_class_key qdio_out_skb_queue_key;
  54 static struct mutex qeth_mod_mutex;
  55
  56 static void qeth_send_control_data_cb(struct qeth_channel *,
  57                         struct qeth_cmd_buffer *);
  58 static int qeth_issue_next_read(struct qeth_card *);
  59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  61 static void qeth_free_buffer_pool(struct qeth_card *);
  62 static int qeth_qdio_establish(struct qeth_card *);
  63 static void qeth_free_qdio_buffers(struct qeth_card *);
  64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  65                 struct qeth_qdio_out_buffer *buf,
  66                 enum iucv_tx_notify notification);
  67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  69                 struct qeth_qdio_out_buffer *buf,
  70                 enum qeth_qdio_buffer_states newbufstate);
  71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  72
  73 struct workqueue_struct *qeth_wq;
  74 EXPORT_SYMBOL_GPL(qeth_wq);
  75
  76 static void qeth_close_dev_handler(struct work_struct *work)
  77 {
  78         struct qeth_card *card;
  79
  80         card = container_of(work, struct qeth_card, close_dev_work);
  81         QETH_CARD_TEXT(card, 2, "cldevhdl");
  82         rtnl_lock();
  83         dev_close(card->dev);
  84         rtnl_unlock();
  85         ccwgroup_set_offline(card->gdev);
  86 }
  87
  88 void qeth_close_dev(struct qeth_card *card)
  89 {
  90         QETH_CARD_TEXT(card, 2, "cldevsubm");
  91         queue_work(qeth_wq, &card->close_dev_work);
  92 }
  93 EXPORT_SYMBOL_GPL(qeth_close_dev);
  94
  95 static inline const char *qeth_get_cardname(struct qeth_card *card)
  96 {
  97         if (card->info.guestlan) {
  98                 switch (card->info.type) {
  99                 case QETH_CARD_TYPE_OSD:
 100                         return " Virtual NIC QDIO";
 101                 case QETH_CARD_TYPE_IQD:
 102                         return " Virtual NIC Hiper";
 103                 case QETH_CARD_TYPE_OSM:
 104                         return " Virtual NIC QDIO - OSM";
 105                 case QETH_CARD_TYPE_OSX:
 106                         return " Virtual NIC QDIO - OSX";
 107                 default:
 108                         return " unknown";
 109                 }
 110         } else {
 111                 switch (card->info.type) {
 112                 case QETH_CARD_TYPE_OSD:
 113                         return " OSD Express";
 114                 case QETH_CARD_TYPE_IQD:
 115                         return " HiperSockets";
 116                 case QETH_CARD_TYPE_OSN:
 117                         return " OSN QDIO";
 118                 case QETH_CARD_TYPE_OSM:
 119                         return " OSM QDIO";
 120                 case QETH_CARD_TYPE_OSX:
 121                         return " OSX QDIO";
 122                 default:
 123                         return " unknown";
 124                 }
 125         }
 126         return " n/a";
 127 }
 128
 129 /* max length to be returned: 14 */
 130 const char *qeth_get_cardname_short(struct qeth_card *card)
 131 {
 132         if (card->info.guestlan) {
 133                 switch (card->info.type) {
 134                 case QETH_CARD_TYPE_OSD:
 135                         return "Virt.NIC QDIO";
 136                 case QETH_CARD_TYPE_IQD:
 137                         return "Virt.NIC Hiper";
 138                 case QETH_CARD_TYPE_OSM:
 139                         return "Virt.NIC OSM";
 140                 case QETH_CARD_TYPE_OSX:
 141                         return "Virt.NIC OSX";
 142                 default:
 143                         return "unknown";
 144                 }
 145         } else {
 146                 switch (card->info.type) {
 147                 case QETH_CARD_TYPE_OSD:
 148                         switch (card->info.link_type) {
 149                         case QETH_LINK_TYPE_FAST_ETH:
 150                                 return "OSD_100";
 151                         case QETH_LINK_TYPE_HSTR:
 152                                 return "HSTR";
 153                         case QETH_LINK_TYPE_GBIT_ETH:
 154                                 return "OSD_1000";
 155                         case QETH_LINK_TYPE_10GBIT_ETH:
 156                                 return "OSD_10GIG";
 157                         case QETH_LINK_TYPE_LANE_ETH100:
 158                                 return "OSD_FE_LANE";
 159                         case QETH_LINK_TYPE_LANE_TR:
 160                                 return "OSD_TR_LANE";
 161                         case QETH_LINK_TYPE_LANE_ETH1000:
 162                                 return "OSD_GbE_LANE";
 163                         case QETH_LINK_TYPE_LANE:
 164                                 return "OSD_ATM_LANE";
 165                         default:
 166                                 return "OSD_Express";
 167                         }
 168                 case QETH_CARD_TYPE_IQD:
 169                         return "HiperSockets";
 170                 case QETH_CARD_TYPE_OSN:
 171                         return "OSN";
 172                 case QETH_CARD_TYPE_OSM:
 173                         return "OSM_1000";
 174                 case QETH_CARD_TYPE_OSX:
 175                         return "OSX_10GIG";
 176                 default:
 177                         return "unknown";
 178                 }
 179         }
 180         return "n/a";
 181 }
 182
 183 void qeth_set_recovery_task(struct qeth_card *card)
 184 {
 185         card->recovery_task = current;
 186 }
 187 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 188
 189 void qeth_clear_recovery_task(struct qeth_card *card)
 190 {
 191         card->recovery_task = NULL;
 192 }
 193 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 194
 195 static bool qeth_is_recovery_task(const struct qeth_card *card)
 196 {
 197         return card->recovery_task == current;
 198 }
 199
 200 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 201                          int clear_start_mask)
 202 {
 203         unsigned long flags;
 204
 205         spin_lock_irqsave(&card->thread_mask_lock, flags);
 206         card->thread_allowed_mask = threads;
 207         if (clear_start_mask)
 208                 card->thread_start_mask &= threads;
 209         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 210         wake_up(&card->wait_q);
 211 }
 212 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 213
 214 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 215 {
 216         unsigned long flags;
 217         int rc = 0;
 218
 219         spin_lock_irqsave(&card->thread_mask_lock, flags);
 220         rc = (card->thread_running_mask & threads);
 221         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 222         return rc;
 223 }
 224 EXPORT_SYMBOL_GPL(qeth_threads_running);
 225
 226 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 227 {
 228         if (qeth_is_recovery_task(card))
 229                 return 0;
 230         return wait_event_interruptible(card->wait_q,
 231                         qeth_threads_running(card, threads) == 0);
 232 }
 233 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 234
 235 void qeth_clear_working_pool_list(struct qeth_card *card)
 236 {
 237         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 238
 239         QETH_CARD_TEXT(card, 5, "clwrklst");
 240         list_for_each_entry_safe(pool_entry, tmp,
 241                             &card->qdio.in_buf_pool.entry_list, list){
 242                         list_del(&pool_entry->list);
 243         }
 244 }
 245 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 246
 247 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 248 {
 249         struct qeth_buffer_pool_entry *pool_entry;
 250         void *ptr;
 251         int i, j;
 252
 253         QETH_CARD_TEXT(card, 5, "alocpool");
 254         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 255                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 256                 if (!pool_entry) {
 257                         qeth_free_buffer_pool(card);
 258                         return -ENOMEM;
 259                 }
 260                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 261                         ptr = (void *) __get_free_page(GFP_KERNEL);
 262                         if (!ptr) {
 263                                 while (j > 0)
 264                                         free_page((unsigned long)
 265                                                   pool_entry->elements[--j]);
 266                                 kfree(pool_entry);
 267                                 qeth_free_buffer_pool(card);
 268                                 return -ENOMEM;
 269                         }
 270                         pool_entry->elements[j] = ptr;
 271                 }
 272                 list_add(&pool_entry->init_list,
 273                          &card->qdio.init_pool.entry_list);
 274         }
 275         return 0;
 276 }
 277
 278 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 279 {
 280         QETH_CARD_TEXT(card, 2, "realcbp");
 281
 282         if ((card->state != CARD_STATE_DOWN) &&
 283             (card->state != CARD_STATE_RECOVER))
 284                 return -EPERM;
 285
 286         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 287         qeth_clear_working_pool_list(card);
 288         qeth_free_buffer_pool(card);
 289         card->qdio.in_buf_pool.buf_count = bufcnt;
 290         card->qdio.init_pool.buf_count = bufcnt;
 291         return qeth_alloc_buffer_pool(card);
 292 }
 293 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 294
 295 static inline int qeth_cq_init(struct qeth_card *card)
 296 {
 297         int rc;
 298
 299         if (card->options.cq == QETH_CQ_ENABLED) {
 300                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 301                 memset(card->qdio.c_q->qdio_bufs, 0,
 302                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
 303                 card->qdio.c_q->next_buf_to_init = 127;
 304                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 305                              card->qdio.no_in_queues - 1, 0,
 306                              127);
 307                 if (rc) {
 308                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 309                         goto out;
 310                 }
 311         }
 312         rc = 0;
 313 out:
 314         return rc;
 315 }
 316
 317 static inline int qeth_alloc_cq(struct qeth_card *card)
 318 {
 319         int rc;
 320
 321         if (card->options.cq == QETH_CQ_ENABLED) {
 322                 int i;
 323                 struct qdio_outbuf_state *outbuf_states;
 324
 325                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 326                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
 327                                          GFP_KERNEL);
 328                 if (!card->qdio.c_q) {
 329                         rc = -1;
 330                         goto kmsg_out;
 331                 }
 332                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
 333
 334                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
 335                         card->qdio.c_q->bufs[i].buffer =
 336                                 &card->qdio.c_q->qdio_bufs[i];
 337                 }
 338
 339                 card->qdio.no_in_queues = 2;
 340
 341                 card->qdio.out_bufstates =
 342                         kzalloc(card->qdio.no_out_queues *
 343                                 QDIO_MAX_BUFFERS_PER_Q *
 344                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 345                 outbuf_states = card->qdio.out_bufstates;
 346                 if (outbuf_states == NULL) {
 347                         rc = -1;
 348                         goto free_cq_out;
 349                 }
 350                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 351                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 352                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 353                 }
 354         } else {
 355                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 356                 card->qdio.c_q = NULL;
 357                 card->qdio.no_in_queues = 1;
 358         }
 359         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 360         rc = 0;
 361 out:
 362         return rc;
 363 free_cq_out:
 364         kfree(card->qdio.c_q);
 365         card->qdio.c_q = NULL;
 366 kmsg_out:
 367         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 368         goto out;
 369 }
 370
 371 static inline void qeth_free_cq(struct qeth_card *card)
 372 {
 373         if (card->qdio.c_q) {
 374                 --card->qdio.no_in_queues;
 375                 kfree(card->qdio.c_q);
 376                 card->qdio.c_q = NULL;
 377         }
 378         kfree(card->qdio.out_bufstates);
 379         card->qdio.out_bufstates = NULL;
 380 }
 381
 382 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 383         int delayed) {
 384         enum iucv_tx_notify n;
 385
 386         switch (sbalf15) {
 387         case 0:
 388                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 389                 break;
 390         case 4:
 391         case 16:
 392         case 17:
 393         case 18:
 394                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 395                         TX_NOTIFY_UNREACHABLE;
 396                 break;
 397         default:
 398                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 399                         TX_NOTIFY_GENERALERROR;
 400                 break;
 401         }
 402
 403         return n;
 404 }
 405
 406 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 407         int bidx, int forced_cleanup)
 408 {
 409         if (q->card->options.cq != QETH_CQ_ENABLED)
 410                 return;
 411
 412         if (q->bufs[bidx]->next_pending != NULL) {
 413                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 414                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 415
 416                 while (c) {
 417                         if (forced_cleanup ||
 418                             atomic_read(&c->state) ==
 419                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 420                                 struct qeth_qdio_out_buffer *f = c;
 421                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 422                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 423                                 /* release here to avoid interleaving between
 424                                    outbound tasklet and inbound tasklet
 425                                    regarding notifications and lifecycle */
 426                                 qeth_release_skbs(c);
 427
 428                                 c = f->next_pending;
 429                                 WARN_ON_ONCE(head->next_pending != f);
 430                                 head->next_pending = c;
 431                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 432                         } else {
 433                                 head = c;
 434                                 c = c->next_pending;
 435                         }
 436
 437                 }
 438         }
 439         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 440                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 441                 /* for recovery situations */
 442                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 443                 qeth_init_qdio_out_buf(q, bidx);
 444                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 445         }
 446 }
 447
 448
 449 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 450                 unsigned long phys_aob_addr) {
 451         struct qaob *aob;
 452         struct qeth_qdio_out_buffer *buffer;
 453         enum iucv_tx_notify notification;
 454
 455         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 456         QETH_CARD_TEXT(card, 5, "haob");
 457         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 458         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 459         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 460
 461         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 462                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 463                 notification = TX_NOTIFY_OK;
 464         } else {
 465                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 466                                                         QETH_QDIO_BUF_PENDING);
 467                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 468                 notification = TX_NOTIFY_DELAYED_OK;
 469         }
 470
 471         if (aob->aorc != 0)  {
 472                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 473                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 474         }
 475         qeth_notify_skbs(buffer->q, buffer, notification);
 476
 477         buffer->aob = NULL;
 478         qeth_clear_output_buffer(buffer->q, buffer,
 479                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 480
 481         /* from here on: do not touch buffer anymore */
 482         qdio_release_aob(aob);
 483 }
 484
 485 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 486 {
 487         return card->options.cq == QETH_CQ_ENABLED &&
 488             card->qdio.c_q != NULL &&
 489             queue != 0 &&
 490             queue == card->qdio.no_in_queues - 1;
 491 }
 492
 493
 494 static int qeth_issue_next_read(struct qeth_card *card)
 495 {
 496         int rc;
 497         struct qeth_cmd_buffer *iob;
 498
 499         QETH_CARD_TEXT(card, 5, "issnxrd");
 500         if (card->read.state != CH_STATE_UP)
 501                 return -EIO;
 502         iob = qeth_get_buffer(&card->read);
 503         if (!iob) {
 504                 dev_warn(&card->gdev->dev, "The qeth device driver "
 505                         "failed to recover an error on the device\n");
 506                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 507                         "available\n", dev_name(&card->gdev->dev));
 508                 return -ENOMEM;
 509         }
 510         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 511         QETH_CARD_TEXT(card, 6, "noirqpnd");
 512         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 513                               (addr_t) iob, 0, 0);
 514         if (rc) {
 515                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 516                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 517                 atomic_set(&card->read.irq_pending, 0);
 518                 card->read_or_write_problem = 1;
 519                 qeth_schedule_recovery(card);
 520                 wake_up(&card->wait_q);
 521         }
 522         return rc;
 523 }
 524
 525 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 526 {
 527         struct qeth_reply *reply;
 528
 529         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 530         if (reply) {
 531                 atomic_set(&reply->refcnt, 1);
 532                 atomic_set(&reply->received, 0);
 533                 reply->card = card;
 534         }
 535         return reply;
 536 }
 537
 538 static void qeth_get_reply(struct qeth_reply *reply)
 539 {
 540         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 541         atomic_inc(&reply->refcnt);
 542 }
 543
 544 static void qeth_put_reply(struct qeth_reply *reply)
 545 {
 546         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 547         if (atomic_dec_and_test(&reply->refcnt))
 548                 kfree(reply);
 549 }
 550
 551 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 552                 struct qeth_card *card)
 553 {
 554         char *ipa_name;
 555         int com = cmd->hdr.command;
 556         ipa_name = qeth_get_ipa_cmd_name(com);
 557         if (rc)
 558                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 559                                 "x%X \"%s\"\n",
 560                                 ipa_name, com, dev_name(&card->gdev->dev),
 561                                 QETH_CARD_IFNAME(card), rc,
 562                                 qeth_get_ipa_msg(rc));
 563         else
 564                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 565                                 ipa_name, com, dev_name(&card->gdev->dev),
 566                                 QETH_CARD_IFNAME(card));
 567 }
 568
 569 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 570                 struct qeth_cmd_buffer *iob)
 571 {
 572         struct qeth_ipa_cmd *cmd = NULL;
 573
 574         QETH_CARD_TEXT(card, 5, "chkipad");
 575         if (IS_IPA(iob->data)) {
 576                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 577                 if (IS_IPA_REPLY(cmd)) {
 578                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 579                             cmd->hdr.command != IPA_CMD_DELCCID &&
 580                             cmd->hdr.command != IPA_CMD_MODCCID &&
 581                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 582                                 qeth_issue_ipa_msg(cmd,
 583                                                 cmd->hdr.return_code, card);
 584                         return cmd;
 585                 } else {
 586                         switch (cmd->hdr.command) {
 587                         case IPA_CMD_STOPLAN:
 588                                 if (cmd->hdr.return_code ==
 589                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 590                                         dev_err(&card->gdev->dev,
 591                                            "Interface %s is down because the "
 592                                            "adjacent port is no longer in "
 593                                            "reflective relay mode\n",
 594                                            QETH_CARD_IFNAME(card));
 595                                         qeth_close_dev(card);
 596                                 } else {
 597                                         dev_warn(&card->gdev->dev,
 598                                            "The link for interface %s on CHPID"
 599                                            " 0x%X failed\n",
 600                                            QETH_CARD_IFNAME(card),
 601                                            card->info.chpid);
 602                                         qeth_issue_ipa_msg(cmd,
 603                                                 cmd->hdr.return_code, card);
 604                                 }
 605                                 card->lan_online = 0;
 606                                 if (card->dev && netif_carrier_ok(card->dev))
 607                                         netif_carrier_off(card->dev);
 608                                 return NULL;
 609                         case IPA_CMD_STARTLAN:
 610                                 dev_info(&card->gdev->dev,
 611                                            "The link for %s on CHPID 0x%X has"
 612                                            " been restored\n",
 613                                            QETH_CARD_IFNAME(card),
 614                                            card->info.chpid);
 615                                 netif_carrier_on(card->dev);
 616                                 card->lan_online = 1;
 617                                 if (card->info.hwtrap)
 618                                         card->info.hwtrap = 2;
 619                                 qeth_schedule_recovery(card);
 620                                 return NULL;
 621                         case IPA_CMD_SETBRIDGEPORT:
 622                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 623                                 if (card->discipline->control_event_handler
 624                                                                 (card, cmd))
 625                                         return cmd;
 626                                 else
 627                                         return NULL;
 628                         case IPA_CMD_MODCCID:
 629                                 return cmd;
 630                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 631                                 QETH_CARD_TEXT(card, 3, "irla");
 632                                 break;
 633                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 634                                 QETH_CARD_TEXT(card, 3, "urla");
 635                                 break;
 636                         default:
 637                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 638                                            "but not a reply!\n");
 639                                 break;
 640                         }
 641                 }
 642         }
 643         return cmd;
 644 }
 645
 646 void qeth_clear_ipacmd_list(struct qeth_card *card)
 647 {
 648         struct qeth_reply *reply, *r;
 649         unsigned long flags;
 650
 651         QETH_CARD_TEXT(card, 4, "clipalst");
 652
 653         spin_lock_irqsave(&card->lock, flags);
 654         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 655                 qeth_get_reply(reply);
 656                 reply->rc = -EIO;
 657                 atomic_inc(&reply->received);
 658                 list_del_init(&reply->list);
 659                 wake_up(&reply->wait_q);
 660                 qeth_put_reply(reply);
 661         }
 662         spin_unlock_irqrestore(&card->lock, flags);
 663         atomic_set(&card->write.irq_pending, 0);
 664 }
 665 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 666
 667 static int qeth_check_idx_response(struct qeth_card *card,
 668         unsigned char *buffer)
 669 {
 670         if (!buffer)
 671                 return 0;
 672
 673         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 674         if ((buffer[2] & 0xc0) == 0xc0) {
 675                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 676                            "with cause code 0x%02x%s\n",
 677                            buffer[4],
 678                            ((buffer[4] == 0x22) ?
 679                             " -- try another portname" : ""));
 680                 QETH_CARD_TEXT(card, 2, "ckidxres");
 681                 QETH_CARD_TEXT(card, 2, " idxterm");
 682                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 683                 if (buffer[4] == 0xf6) {
 684                         dev_err(&card->gdev->dev,
 685                         "The qeth device is not configured "
 686                         "for the OSI layer required by z/VM\n");
 687                         return -EPERM;
 688                 }
 689                 return -EIO;
 690         }
 691         return 0;
 692 }
 693
 694 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 695                 __u32 len)
 696 {
 697         struct qeth_card *card;
 698
 699         card = CARD_FROM_CDEV(channel->ccwdev);
 700         QETH_CARD_TEXT(card, 4, "setupccw");
 701         if (channel == &card->read)
 702                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 703         else
 704                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 705         channel->ccw.count = len;
 706         channel->ccw.cda = (__u32) __pa(iob);
 707 }
 708
 709 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 710 {
 711         __u8 index;
 712
 713         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 714         index = channel->io_buf_no;
 715         do {
 716                 if (channel->iob[index].state == BUF_STATE_FREE) {
 717                         channel->iob[index].state = BUF_STATE_LOCKED;
 718                         channel->io_buf_no = (channel->io_buf_no + 1) %
 719                                 QETH_CMD_BUFFER_NO;
 720                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 721                         return channel->iob + index;
 722                 }
 723                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 724         } while (index != channel->io_buf_no);
 725
 726         return NULL;
 727 }
 728
 729 void qeth_release_buffer(struct qeth_channel *channel,
 730                 struct qeth_cmd_buffer *iob)
 731 {
 732         unsigned long flags;
 733
 734         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 735         spin_lock_irqsave(&channel->iob_lock, flags);
 736         memset(iob->data, 0, QETH_BUFSIZE);
 737         iob->state = BUF_STATE_FREE;
 738         iob->callback = qeth_send_control_data_cb;
 739         iob->rc = 0;
 740         spin_unlock_irqrestore(&channel->iob_lock, flags);
 741         wake_up(&channel->wait_q);
 742 }
 743 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 744
 745 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 746 {
 747         struct qeth_cmd_buffer *buffer = NULL;
 748         unsigned long flags;
 749
 750         spin_lock_irqsave(&channel->iob_lock, flags);
 751         buffer = __qeth_get_buffer(channel);
 752         spin_unlock_irqrestore(&channel->iob_lock, flags);
 753         return buffer;
 754 }
 755
 756 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 757 {
 758         struct qeth_cmd_buffer *buffer;
 759         wait_event(channel->wait_q,
 760                    ((buffer = qeth_get_buffer(channel)) != NULL));
 761         return buffer;
 762 }
 763 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 764
 765 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 766 {
 767         int cnt;
 768
 769         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 770                 qeth_release_buffer(channel, &channel->iob[cnt]);
 771         channel->buf_no = 0;
 772         channel->io_buf_no = 0;
 773 }
 774 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 775
 776 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 777                   struct qeth_cmd_buffer *iob)
 778 {
 779         struct qeth_card *card;
 780         struct qeth_reply *reply, *r;
 781         struct qeth_ipa_cmd *cmd;
 782         unsigned long flags;
 783         int keep_reply;
 784         int rc = 0;
 785
 786         card = CARD_FROM_CDEV(channel->ccwdev);
 787         QETH_CARD_TEXT(card, 4, "sndctlcb");
 788         rc = qeth_check_idx_response(card, iob->data);
 789         switch (rc) {
 790         case 0:
 791                 break;
 792         case -EIO:
 793                 qeth_clear_ipacmd_list(card);
 794                 qeth_schedule_recovery(card);
 795                 /* fall through */
 796         default:
 797                 goto out;
 798         }
 799
 800         cmd = qeth_check_ipa_data(card, iob);
 801         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 802                 goto out;
 803         /*in case of OSN : check if cmd is set */
 804         if (card->info.type == QETH_CARD_TYPE_OSN &&
 805             cmd &&
 806             cmd->hdr.command != IPA_CMD_STARTLAN &&
 807             card->osn_info.assist_cb != NULL) {
 808                 card->osn_info.assist_cb(card->dev, cmd);
 809                 goto out;
 810         }
 811
 812         spin_lock_irqsave(&card->lock, flags);
 813         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 814                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 815                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 816                         qeth_get_reply(reply);
 817                         list_del_init(&reply->list);
 818                         spin_unlock_irqrestore(&card->lock, flags);
 819                         keep_reply = 0;
 820                         if (reply->callback != NULL) {
 821                                 if (cmd) {
 822                                         reply->offset = (__u16)((char *)cmd -
 823                                                         (char *)iob->data);
 824                                         keep_reply = reply->callback(card,
 825                                                         reply,
 826                                                         (unsigned long)cmd);
 827                                 } else
 828                                         keep_reply = reply->callback(card,
 829                                                         reply,
 830                                                         (unsigned long)iob);
 831                         }
 832                         if (cmd)
 833                                 reply->rc = (u16) cmd->hdr.return_code;
 834                         else if (iob->rc)
 835                                 reply->rc = iob->rc;
 836                         if (keep_reply) {
 837                                 spin_lock_irqsave(&card->lock, flags);
 838                                 list_add_tail(&reply->list,
 839                                               &card->cmd_waiter_list);
 840                                 spin_unlock_irqrestore(&card->lock, flags);
 841                         } else {
 842                                 atomic_inc(&reply->received);
 843                                 wake_up(&reply->wait_q);
 844                         }
 845                         qeth_put_reply(reply);
 846                         goto out;
 847                 }
 848         }
 849         spin_unlock_irqrestore(&card->lock, flags);
 850 out:
 851         memcpy(&card->seqno.pdu_hdr_ack,
 852                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 853                 QETH_SEQ_NO_LENGTH);
 854         qeth_release_buffer(channel, iob);
 855 }
 856
 857 static int qeth_setup_channel(struct qeth_channel *channel)
 858 {
 859         int cnt;
 860
 861         QETH_DBF_TEXT(SETUP, 2, "setupch");
 862         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 863                 channel->iob[cnt].data =
 864                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 865                 if (channel->iob[cnt].data == NULL)
 866                         break;
 867                 channel->iob[cnt].state = BUF_STATE_FREE;
 868                 channel->iob[cnt].channel = channel;
 869                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 870                 channel->iob[cnt].rc = 0;
 871         }
 872         if (cnt < QETH_CMD_BUFFER_NO) {
 873                 while (cnt-- > 0)
 874                         kfree(channel->iob[cnt].data);
 875                 return -ENOMEM;
 876         }
 877         channel->buf_no = 0;
 878         channel->io_buf_no = 0;
 879         atomic_set(&channel->irq_pending, 0);
 880         spin_lock_init(&channel->iob_lock);
 881
 882         init_waitqueue_head(&channel->wait_q);
 883         return 0;
 884 }
 885
 886 static int qeth_set_thread_start_bit(struct qeth_card *card,
 887                 unsigned long thread)
 888 {
 889         unsigned long flags;
 890
 891         spin_lock_irqsave(&card->thread_mask_lock, flags);
 892         if (!(card->thread_allowed_mask & thread) ||
 893               (card->thread_start_mask & thread)) {
 894                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 895                 return -EPERM;
 896         }
 897         card->thread_start_mask |= thread;
 898         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 899         return 0;
 900 }
 901
 902 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 903 {
 904         unsigned long flags;
 905
 906         spin_lock_irqsave(&card->thread_mask_lock, flags);
 907         card->thread_start_mask &= ~thread;
 908         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 909         wake_up(&card->wait_q);
 910 }
 911 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 912
 913 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 914 {
 915         unsigned long flags;
 916
 917         spin_lock_irqsave(&card->thread_mask_lock, flags);
 918         card->thread_running_mask &= ~thread;
 919         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 920         wake_up(&card->wait_q);
 921 }
 922 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 923
 924 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 925 {
 926         unsigned long flags;
 927         int rc = 0;
 928
 929         spin_lock_irqsave(&card->thread_mask_lock, flags);
 930         if (card->thread_start_mask & thread) {
 931                 if ((card->thread_allowed_mask & thread) &&
 932                     !(card->thread_running_mask & thread)) {
 933                         rc = 1;
 934                         card->thread_start_mask &= ~thread;
 935                         card->thread_running_mask |= thread;
 936                 } else
 937                         rc = -EPERM;
 938         }
 939         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 940         return rc;
 941 }
 942
 943 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 944 {
 945         int rc = 0;
 946
 947         wait_event(card->wait_q,
 948                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 949         return rc;
 950 }
 951 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 952
 953 void qeth_schedule_recovery(struct qeth_card *card)
 954 {
 955         QETH_CARD_TEXT(card, 2, "startrec");
 956         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 957                 schedule_work(&card->kernel_thread_starter);
 958 }
 959 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 960
 961 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 962 {
 963         int dstat, cstat;
 964         char *sense;
 965         struct qeth_card *card;
 966
 967         sense = (char *) irb->ecw;
 968         cstat = irb->scsw.cmd.cstat;
 969         dstat = irb->scsw.cmd.dstat;
 970         card = CARD_FROM_CDEV(cdev);
 971
 972         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 973                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 974                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 975                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 976                 dev_warn(&cdev->dev, "The qeth device driver "
 977                         "failed to recover an error on the device\n");
 978                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 979                         dev_name(&cdev->dev), dstat, cstat);
 980                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 981                                 16, 1, irb, 64, 1);
 982                 return 1;
 983         }
 984
 985         if (dstat & DEV_STAT_UNIT_CHECK) {
 986                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 987                     SENSE_RESETTING_EVENT_FLAG) {
 988                         QETH_CARD_TEXT(card, 2, "REVIND");
 989                         return 1;
 990                 }
 991                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 992                     SENSE_COMMAND_REJECT_FLAG) {
 993                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 994                         return 1;
 995                 }
 996                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 997                         QETH_CARD_TEXT(card, 2, "AFFE");
 998                         return 1;
 999                 }
1000                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1001                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1002                         return 0;
1003                 }
1004                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1005                         return 1;
1006         }
1007         return 0;
1008 }
1009
1010 static long __qeth_check_irb_error(struct ccw_device *cdev,
1011                 unsigned long intparm, struct irb *irb)
1012 {
1013         struct qeth_card *card;
1014
1015         card = CARD_FROM_CDEV(cdev);
1016
1017         if (!card || !IS_ERR(irb))
1018                 return 0;
1019
1020         switch (PTR_ERR(irb)) {
1021         case -EIO:
1022                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1023                         dev_name(&cdev->dev));
1024                 QETH_CARD_TEXT(card, 2, "ckirberr");
1025                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1026                 break;
1027         case -ETIMEDOUT:
1028                 dev_warn(&cdev->dev, "A hardware operation timed out"
1029                         " on the device\n");
1030                 QETH_CARD_TEXT(card, 2, "ckirberr");
1031                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1032                 if (intparm == QETH_RCD_PARM) {
1033                         if (card->data.ccwdev == cdev) {
1034                                 card->data.state = CH_STATE_DOWN;
1035                                 wake_up(&card->wait_q);
1036                         }
1037                 }
1038                 break;
1039         default:
1040                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1041                         dev_name(&cdev->dev), PTR_ERR(irb));
1042                 QETH_CARD_TEXT(card, 2, "ckirberr");
1043                 QETH_CARD_TEXT(card, 2, "  rc???");
1044         }
1045         return PTR_ERR(irb);
1046 }
1047
1048 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1049                 struct irb *irb)
1050 {
1051         int rc;
1052         int cstat, dstat;
1053         struct qeth_cmd_buffer *buffer;
1054         struct qeth_channel *channel;
1055         struct qeth_card *card;
1056         struct qeth_cmd_buffer *iob;
1057         __u8 index;
1058
1059         if (__qeth_check_irb_error(cdev, intparm, irb))
1060                 return;
1061         cstat = irb->scsw.cmd.cstat;
1062         dstat = irb->scsw.cmd.dstat;
1063
1064         card = CARD_FROM_CDEV(cdev);
1065         if (!card)
1066                 return;
1067
1068         QETH_CARD_TEXT(card, 5, "irq");
1069
1070         if (card->read.ccwdev == cdev) {
1071                 channel = &card->read;
1072                 QETH_CARD_TEXT(card, 5, "read");
1073         } else if (card->write.ccwdev == cdev) {
1074                 channel = &card->write;
1075                 QETH_CARD_TEXT(card, 5, "write");
1076         } else {
1077                 channel = &card->data;
1078                 QETH_CARD_TEXT(card, 5, "data");
1079         }
1080         atomic_set(&channel->irq_pending, 0);
1081
1082         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1083                 channel->state = CH_STATE_STOPPED;
1084
1085         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1086                 channel->state = CH_STATE_HALTED;
1087
1088         /*let's wake up immediately on data channel*/
1089         if ((channel == &card->data) && (intparm != 0) &&
1090             (intparm != QETH_RCD_PARM))
1091                 goto out;
1092
1093         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1094                 QETH_CARD_TEXT(card, 6, "clrchpar");
1095                 /* we don't have to handle this further */
1096                 intparm = 0;
1097         }
1098         if (intparm == QETH_HALT_CHANNEL_PARM) {
1099                 QETH_CARD_TEXT(card, 6, "hltchpar");
1100                 /* we don't have to handle this further */
1101                 intparm = 0;
1102         }
1103         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1104             (dstat & DEV_STAT_UNIT_CHECK) ||
1105             (cstat)) {
1106                 if (irb->esw.esw0.erw.cons) {
1107                         dev_warn(&channel->ccwdev->dev,
1108                                 "The qeth device driver failed to recover "
1109                                 "an error on the device\n");
1110                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1111                                 "0x%X dstat 0x%X\n",
1112                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1113                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1114                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1115                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1116                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1117                 }
1118                 if (intparm == QETH_RCD_PARM) {
1119                         channel->state = CH_STATE_DOWN;
1120                         goto out;
1121                 }
1122                 rc = qeth_get_problem(cdev, irb);
1123                 if (rc) {
1124                         qeth_clear_ipacmd_list(card);
1125                         qeth_schedule_recovery(card);
1126                         goto out;
1127                 }
1128         }
1129
1130         if (intparm == QETH_RCD_PARM) {
1131                 channel->state = CH_STATE_RCD_DONE;
1132                 goto out;
1133         }
1134         if (intparm) {
1135                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1136                 buffer->state = BUF_STATE_PROCESSED;
1137         }
1138         if (channel == &card->data)
1139                 return;
1140         if (channel == &card->read &&
1141             channel->state == CH_STATE_UP)
1142                 qeth_issue_next_read(card);
1143
1144         iob = channel->iob;
1145         index = channel->buf_no;
1146         while (iob[index].state == BUF_STATE_PROCESSED) {
1147                 if (iob[index].callback != NULL)
1148                         iob[index].callback(channel, iob + index);
1149
1150                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1151         }
1152         channel->buf_no = index;
1153 out:
1154         wake_up(&card->wait_q);
1155         return;
1156 }
1157
1158 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1159                 struct qeth_qdio_out_buffer *buf,
1160                 enum iucv_tx_notify notification)
1161 {
1162         struct sk_buff *skb;
1163
1164         if (skb_queue_empty(&buf->skb_list))
1165                 goto out;
1166         skb = skb_peek(&buf->skb_list);
1167         while (skb) {
1168                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1169                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1170                 if (skb->protocol == ETH_P_AF_IUCV) {
1171                         if (skb->sk) {
1172                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1173                                 iucv->sk_txnotify(skb, notification);
1174                         }
1175                 }
1176                 if (skb_queue_is_last(&buf->skb_list, skb))
1177                         skb = NULL;
1178                 else
1179                         skb = skb_queue_next(&buf->skb_list, skb);
1180         }
1181 out:
1182         return;
1183 }
1184
1185 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1186 {
1187         struct sk_buff *skb;
1188         struct iucv_sock *iucv;
1189         int notify_general_error = 0;
1190
1191         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1192                 notify_general_error = 1;
1193
1194         /* release may never happen from within CQ tasklet scope */
1195         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1196
1197         skb = skb_dequeue(&buf->skb_list);
1198         while (skb) {
1199                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1200                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1201                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1202                         if (skb->sk) {
1203                                 iucv = iucv_sk(skb->sk);
1204                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1205                         }
1206                 }
1207                 atomic_dec(&skb->users);
1208                 dev_kfree_skb_any(skb);
1209                 skb = skb_dequeue(&buf->skb_list);
1210         }
1211 }
1212
1213 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1214                 struct qeth_qdio_out_buffer *buf,
1215                 enum qeth_qdio_buffer_states newbufstate)
1216 {
1217         int i;
1218
1219         /* is PCI flag set on buffer? */
1220         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1221                 atomic_dec(&queue->set_pci_flags_count);
1222
1223         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1224                 qeth_release_skbs(buf);
1225         }
1226         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1227                 if (buf->buffer->element[i].addr && buf->is_header[i])
1228                         kmem_cache_free(qeth_core_header_cache,
1229                                 buf->buffer->element[i].addr);
1230                 buf->is_header[i] = 0;
1231                 buf->buffer->element[i].length = 0;
1232                 buf->buffer->element[i].addr = NULL;
1233                 buf->buffer->element[i].eflags = 0;
1234                 buf->buffer->element[i].sflags = 0;
1235         }
1236         buf->buffer->element[15].eflags = 0;
1237         buf->buffer->element[15].sflags = 0;
1238         buf->next_element_to_fill = 0;
1239         atomic_set(&buf->state, newbufstate);
1240 }
1241
1242 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1243 {
1244         int j;
1245
1246         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1247                 if (!q->bufs[j])
1248                         continue;
1249                 qeth_cleanup_handled_pending(q, j, 1);
1250                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1251                 if (free) {
1252                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1253                         q->bufs[j] = NULL;
1254                 }
1255         }
1256 }
1257
1258 void qeth_clear_qdio_buffers(struct qeth_card *card)
1259 {
1260         int i;
1261
1262         QETH_CARD_TEXT(card, 2, "clearqdbf");
1263         /* clear outbound buffers to free skbs */
1264         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1265                 if (card->qdio.out_qs[i]) {
1266                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1267                 }
1268         }
1269 }
1270 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1271
1272 static void qeth_free_buffer_pool(struct qeth_card *card)
1273 {
1274         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1275         int i = 0;
1276         list_for_each_entry_safe(pool_entry, tmp,
1277                                  &card->qdio.init_pool.entry_list, init_list){
1278                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1279                         free_page((unsigned long)pool_entry->elements[i]);
1280                 list_del(&pool_entry->init_list);
1281                 kfree(pool_entry);
1282         }
1283 }
1284
1285 static void qeth_free_qdio_buffers(struct qeth_card *card)
1286 {
1287         int i, j;
1288
1289         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1290                 QETH_QDIO_UNINITIALIZED)
1291                 return;
1292
1293         qeth_free_cq(card);
1294         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1295         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1296                 if (card->qdio.in_q->bufs[j].rx_skb)
1297                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1298         }
1299         kfree(card->qdio.in_q);
1300         card->qdio.in_q = NULL;
1301         /* inbound buffer pool */
1302         qeth_free_buffer_pool(card);
1303         /* free outbound qdio_qs */
1304         if (card->qdio.out_qs) {
1305                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1306                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1307                         kfree(card->qdio.out_qs[i]);
1308                 }
1309                 kfree(card->qdio.out_qs);
1310                 card->qdio.out_qs = NULL;
1311         }
1312 }
1313
1314 static void qeth_clean_channel(struct qeth_channel *channel)
1315 {
1316         int cnt;
1317
1318         QETH_DBF_TEXT(SETUP, 2, "freech");
1319         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1320                 kfree(channel->iob[cnt].data);
1321 }
1322
1323 static void qeth_set_single_write_queues(struct qeth_card *card)
1324 {
1325         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1326             (card->qdio.no_out_queues == 4))
1327                 qeth_free_qdio_buffers(card);
1328
1329         card->qdio.no_out_queues = 1;
1330         if (card->qdio.default_out_queue != 0)
1331                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1332
1333         card->qdio.default_out_queue = 0;
1334 }
1335
1336 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1337 {
1338         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1339             (card->qdio.no_out_queues == 1)) {
1340                 qeth_free_qdio_buffers(card);
1341                 card->qdio.default_out_queue = 2;
1342         }
1343         card->qdio.no_out_queues = 4;
1344 }
1345
1346 static void qeth_update_from_chp_desc(struct qeth_card *card)
1347 {
1348         struct ccw_device *ccwdev;
1349         struct channel_path_desc *chp_dsc;
1350
1351         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1352
1353         ccwdev = card->data.ccwdev;
1354         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1355         if (!chp_dsc)
1356                 goto out;
1357
1358         card->info.func_level = 0x4100 + chp_dsc->desc;
1359         if (card->info.type == QETH_CARD_TYPE_IQD)
1360                 goto out;
1361
1362         /* CHPP field bit 6 == 1 -> single queue */
1363         if ((chp_dsc->chpp & 0x02) == 0x02)
1364                 qeth_set_single_write_queues(card);
1365         else
1366                 qeth_set_multiple_write_queues(card);
1367 out:
1368         kfree(chp_dsc);
1369         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1370         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1371 }
1372
1373 static void qeth_init_qdio_info(struct qeth_card *card)
1374 {
1375         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1376         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1377         /* inbound */
1378         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1379         if (card->info.type == QETH_CARD_TYPE_IQD)
1380                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1381         else
1382                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1383         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1384         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1385         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1386 }
1387
1388 static void qeth_set_intial_options(struct qeth_card *card)
1389 {
1390         card->options.route4.type = NO_ROUTER;
1391         card->options.route6.type = NO_ROUTER;
1392         card->options.fake_broadcast = 0;
1393         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1394         card->options.performance_stats = 0;
1395         card->options.rx_sg_cb = QETH_RX_SG_CB;
1396         card->options.isolation = ISOLATION_MODE_NONE;
1397         card->options.cq = QETH_CQ_DISABLED;
1398 }
1399
1400 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1401 {
1402         unsigned long flags;
1403         int rc = 0;
1404
1405         spin_lock_irqsave(&card->thread_mask_lock, flags);
1406         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1407                         (u8) card->thread_start_mask,
1408                         (u8) card->thread_allowed_mask,
1409                         (u8) card->thread_running_mask);
1410         rc = (card->thread_start_mask & thread);
1411         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1412         return rc;
1413 }
1414
1415 static void qeth_start_kernel_thread(struct work_struct *work)
1416 {
1417         struct task_struct *ts;
1418         struct qeth_card *card = container_of(work, struct qeth_card,
1419                                         kernel_thread_starter);
1420         QETH_CARD_TEXT(card , 2, "strthrd");
1421
1422         if (card->read.state != CH_STATE_UP &&
1423             card->write.state != CH_STATE_UP)
1424                 return;
1425         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1426                 ts = kthread_run(card->discipline->recover, (void *)card,
1427                                 "qeth_recover");
1428                 if (IS_ERR(ts)) {
1429                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1430                         qeth_clear_thread_running_bit(card,
1431                                 QETH_RECOVER_THREAD);
1432                 }
1433         }
1434 }
1435
1436 static int qeth_setup_card(struct qeth_card *card)
1437 {
1438
1439         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1440         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1441
1442         card->read.state  = CH_STATE_DOWN;
1443         card->write.state = CH_STATE_DOWN;
1444         card->data.state  = CH_STATE_DOWN;
1445         card->state = CARD_STATE_DOWN;
1446         card->lan_online = 0;
1447         card->read_or_write_problem = 0;
1448         card->dev = NULL;
1449         spin_lock_init(&card->vlanlock);
1450         spin_lock_init(&card->mclock);
1451         spin_lock_init(&card->lock);
1452         spin_lock_init(&card->ip_lock);
1453         spin_lock_init(&card->thread_mask_lock);
1454         mutex_init(&card->conf_mutex);
1455         mutex_init(&card->discipline_mutex);
1456         card->thread_start_mask = 0;
1457         card->thread_allowed_mask = 0;
1458         card->thread_running_mask = 0;
1459         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1460         INIT_LIST_HEAD(&card->ip_list);
1461         INIT_LIST_HEAD(card->ip_tbd_list);
1462         INIT_LIST_HEAD(&card->cmd_waiter_list);
1463         init_waitqueue_head(&card->wait_q);
1464         /* initial options */
1465         qeth_set_intial_options(card);
1466         /* IP address takeover */
1467         INIT_LIST_HEAD(&card->ipato.entries);
1468         card->ipato.enabled = 0;
1469         card->ipato.invert4 = 0;
1470         card->ipato.invert6 = 0;
1471         /* init QDIO stuff */
1472         qeth_init_qdio_info(card);
1473         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1474         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1475         return 0;
1476 }
1477
1478 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1479 {
1480         struct qeth_card *card = container_of(slr, struct qeth_card,
1481                                         qeth_service_level);
1482         if (card->info.mcl_level[0])
1483                 seq_printf(m, "qeth: %s firmware level %s\n",
1484                         CARD_BUS_ID(card), card->info.mcl_level);
1485 }
1486
1487 static struct qeth_card *qeth_alloc_card(void)
1488 {
1489         struct qeth_card *card;
1490
1491         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1492         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1493         if (!card)
1494                 goto out;
1495         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1496         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1497         if (!card->ip_tbd_list) {
1498                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1499                 goto out_card;
1500         }
1501         if (qeth_setup_channel(&card->read))
1502                 goto out_ip;
1503         if (qeth_setup_channel(&card->write))
1504                 goto out_channel;
1505         card->options.layer2 = -1;
1506         card->qeth_service_level.seq_print = qeth_core_sl_print;
1507         register_service_level(&card->qeth_service_level);
1508         return card;
1509
1510 out_channel:
1511         qeth_clean_channel(&card->read);
1512 out_ip:
1513         kfree(card->ip_tbd_list);
1514 out_card:
1515         kfree(card);
1516 out:
1517         return NULL;
1518 }
1519
1520 static int qeth_determine_card_type(struct qeth_card *card)
1521 {
1522         int i = 0;
1523
1524         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1525
1526         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1527         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1528         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1529                 if ((CARD_RDEV(card)->id.dev_type ==
1530                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1531                     (CARD_RDEV(card)->id.dev_model ==
1532                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1533                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1534                         card->qdio.no_out_queues =
1535                                 known_devices[i][QETH_QUEUE_NO_IND];
1536                         card->qdio.no_in_queues = 1;
1537                         card->info.is_multicast_different =
1538                                 known_devices[i][QETH_MULTICAST_IND];
1539                         qeth_update_from_chp_desc(card);
1540                         return 0;
1541                 }
1542                 i++;
1543         }
1544         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1545         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1546                 "unknown type\n");
1547         return -ENOENT;
1548 }
1549
1550 static int qeth_clear_channel(struct qeth_channel *channel)
1551 {
1552         unsigned long flags;
1553         struct qeth_card *card;
1554         int rc;
1555
1556         card = CARD_FROM_CDEV(channel->ccwdev);
1557         QETH_CARD_TEXT(card, 3, "clearch");
1558         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1559         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1560         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1561
1562         if (rc)
1563                 return rc;
1564         rc = wait_event_interruptible_timeout(card->wait_q,
1565                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1566         if (rc == -ERESTARTSYS)
1567                 return rc;
1568         if (channel->state != CH_STATE_STOPPED)
1569                 return -ETIME;
1570         channel->state = CH_STATE_DOWN;
1571         return 0;
1572 }
1573
1574 static int qeth_halt_channel(struct qeth_channel *channel)
1575 {
1576         unsigned long flags;
1577         struct qeth_card *card;
1578         int rc;
1579
1580         card = CARD_FROM_CDEV(channel->ccwdev);
1581         QETH_CARD_TEXT(card, 3, "haltch");
1582         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1583         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1584         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1585
1586         if (rc)
1587                 return rc;
1588         rc = wait_event_interruptible_timeout(card->wait_q,
1589                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1590         if (rc == -ERESTARTSYS)
1591                 return rc;
1592         if (channel->state != CH_STATE_HALTED)
1593                 return -ETIME;
1594         return 0;
1595 }
1596
1597 static int qeth_halt_channels(struct qeth_card *card)
1598 {
1599         int rc1 = 0, rc2 = 0, rc3 = 0;
1600
1601         QETH_CARD_TEXT(card, 3, "haltchs");
1602         rc1 = qeth_halt_channel(&card->read);
1603         rc2 = qeth_halt_channel(&card->write);
1604         rc3 = qeth_halt_channel(&card->data);
1605         if (rc1)
1606                 return rc1;
1607         if (rc2)
1608                 return rc2;
1609         return rc3;
1610 }
1611
1612 static int qeth_clear_channels(struct qeth_card *card)
1613 {
1614         int rc1 = 0, rc2 = 0, rc3 = 0;
1615
1616         QETH_CARD_TEXT(card, 3, "clearchs");
1617         rc1 = qeth_clear_channel(&card->read);
1618         rc2 = qeth_clear_channel(&card->write);
1619         rc3 = qeth_clear_channel(&card->data);
1620         if (rc1)
1621                 return rc1;
1622         if (rc2)
1623                 return rc2;
1624         return rc3;
1625 }
1626
1627 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1628 {
1629         int rc = 0;
1630
1631         QETH_CARD_TEXT(card, 3, "clhacrd");
1632
1633         if (halt)
1634                 rc = qeth_halt_channels(card);
1635         if (rc)
1636                 return rc;
1637         return qeth_clear_channels(card);
1638 }
1639
1640 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1641 {
1642         int rc = 0;
1643
1644         QETH_CARD_TEXT(card, 3, "qdioclr");
1645         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1646                 QETH_QDIO_CLEANING)) {
1647         case QETH_QDIO_ESTABLISHED:
1648                 if (card->info.type == QETH_CARD_TYPE_IQD)
1649                         rc = qdio_shutdown(CARD_DDEV(card),
1650                                 QDIO_FLAG_CLEANUP_USING_HALT);
1651                 else
1652                         rc = qdio_shutdown(CARD_DDEV(card),
1653                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1654                 if (rc)
1655                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1656                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1657                 break;
1658         case QETH_QDIO_CLEANING:
1659                 return rc;
1660         default:
1661                 break;
1662         }
1663         rc = qeth_clear_halt_card(card, use_halt);
1664         if (rc)
1665                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1666         card->state = CARD_STATE_DOWN;
1667         return rc;
1668 }
1669 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1670
1671 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1672                                int *length)
1673 {
1674         struct ciw *ciw;
1675         char *rcd_buf;
1676         int ret;
1677         struct qeth_channel *channel = &card->data;
1678         unsigned long flags;
1679
1680         /*
1681          * scan for RCD command in extended SenseID data
1682          */
1683         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1684         if (!ciw || ciw->cmd == 0)
1685                 return -EOPNOTSUPP;
1686         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1687         if (!rcd_buf)
1688                 return -ENOMEM;
1689
1690         channel->ccw.cmd_code = ciw->cmd;
1691         channel->ccw.cda = (__u32) __pa(rcd_buf);
1692         channel->ccw.count = ciw->count;
1693         channel->ccw.flags = CCW_FLAG_SLI;
1694         channel->state = CH_STATE_RCD;
1695         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1696         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1697                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1698                                        QETH_RCD_TIMEOUT);
1699         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1700         if (!ret)
1701                 wait_event(card->wait_q,
1702                            (channel->state == CH_STATE_RCD_DONE ||
1703                             channel->state == CH_STATE_DOWN));
1704         if (channel->state == CH_STATE_DOWN)
1705                 ret = -EIO;
1706         else
1707                 channel->state = CH_STATE_DOWN;
1708         if (ret) {
1709                 kfree(rcd_buf);
1710                 *buffer = NULL;
1711                 *length = 0;
1712         } else {
1713                 *length = ciw->count;
1714                 *buffer = rcd_buf;
1715         }
1716         return ret;
1717 }
1718
1719 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1720 {
1721         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1722         card->info.chpid = prcd[30];
1723         card->info.unit_addr2 = prcd[31];
1724         card->info.cula = prcd[63];
1725         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1726                                (prcd[0x11] == _ascebc['M']));
1727 }
1728
1729 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1730 {
1731         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1732
1733         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1734             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1735                 card->info.blkt.time_total = 0;
1736                 card->info.blkt.inter_packet = 0;
1737                 card->info.blkt.inter_packet_jumbo = 0;
1738         } else {
1739                 card->info.blkt.time_total = 250;
1740                 card->info.blkt.inter_packet = 5;
1741                 card->info.blkt.inter_packet_jumbo = 15;
1742         }
1743 }
1744
1745 static void qeth_init_tokens(struct qeth_card *card)
1746 {
1747         card->token.issuer_rm_w = 0x00010103UL;
1748         card->token.cm_filter_w = 0x00010108UL;
1749         card->token.cm_connection_w = 0x0001010aUL;
1750         card->token.ulp_filter_w = 0x0001010bUL;
1751         card->token.ulp_connection_w = 0x0001010dUL;
1752 }
1753
1754 static void qeth_init_func_level(struct qeth_card *card)
1755 {
1756         switch (card->info.type) {
1757         case QETH_CARD_TYPE_IQD:
1758                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1759                 break;
1760         case QETH_CARD_TYPE_OSD:
1761         case QETH_CARD_TYPE_OSN:
1762                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1763                 break;
1764         default:
1765                 break;
1766         }
1767 }
1768
1769 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1770                 void (*idx_reply_cb)(struct qeth_channel *,
1771                         struct qeth_cmd_buffer *))
1772 {
1773         struct qeth_cmd_buffer *iob;
1774         unsigned long flags;
1775         int rc;
1776         struct qeth_card *card;
1777
1778         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1779         card = CARD_FROM_CDEV(channel->ccwdev);
1780         iob = qeth_get_buffer(channel);
1781         iob->callback = idx_reply_cb;
1782         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1783         channel->ccw.count = QETH_BUFSIZE;
1784         channel->ccw.cda = (__u32) __pa(iob->data);
1785
1786         wait_event(card->wait_q,
1787                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1788         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1789         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1790         rc = ccw_device_start(channel->ccwdev,
1791                               &channel->ccw, (addr_t) iob, 0, 0);
1792         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1793
1794         if (rc) {
1795                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1796                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1797                 atomic_set(&channel->irq_pending, 0);
1798                 wake_up(&card->wait_q);
1799                 return rc;
1800         }
1801         rc = wait_event_interruptible_timeout(card->wait_q,
1802                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1803         if (rc == -ERESTARTSYS)
1804                 return rc;
1805         if (channel->state != CH_STATE_UP) {
1806                 rc = -ETIME;
1807                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1808                 qeth_clear_cmd_buffers(channel);
1809         } else
1810                 rc = 0;
1811         return rc;
1812 }
1813
1814 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1815                 void (*idx_reply_cb)(struct qeth_channel *,
1816                         struct qeth_cmd_buffer *))
1817 {
1818         struct qeth_card *card;
1819         struct qeth_cmd_buffer *iob;
1820         unsigned long flags;
1821         __u16 temp;
1822         __u8 tmp;
1823         int rc;
1824         struct ccw_dev_id temp_devid;
1825
1826         card = CARD_FROM_CDEV(channel->ccwdev);
1827
1828         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1829
1830         iob = qeth_get_buffer(channel);
1831         iob->callback = idx_reply_cb;
1832         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1833         channel->ccw.count = IDX_ACTIVATE_SIZE;
1834         channel->ccw.cda = (__u32) __pa(iob->data);
1835         if (channel == &card->write) {
1836                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1837                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1838                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1839                 card->seqno.trans_hdr++;
1840         } else {
1841                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1842                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1843                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1844         }
1845         tmp = ((__u8)card->info.portno) | 0x80;
1846         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1847         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1848                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1849         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1850                &card->info.func_level, sizeof(__u16));
1851         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1852         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1853         temp = (card->info.cula << 8) + card->info.unit_addr2;
1854         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1855
1856         wait_event(card->wait_q,
1857                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1858         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1859         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1860         rc = ccw_device_start(channel->ccwdev,
1861                               &channel->ccw, (addr_t) iob, 0, 0);
1862         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1863
1864         if (rc) {
1865                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1866                         rc);
1867                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1868                 atomic_set(&channel->irq_pending, 0);
1869                 wake_up(&card->wait_q);
1870                 return rc;
1871         }
1872         rc = wait_event_interruptible_timeout(card->wait_q,
1873                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1874         if (rc == -ERESTARTSYS)
1875                 return rc;
1876         if (channel->state != CH_STATE_ACTIVATING) {
1877                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1878                         " failed to recover an error on the device\n");
1879                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1880                         dev_name(&channel->ccwdev->dev));
1881                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1882                 qeth_clear_cmd_buffers(channel);
1883                 return -ETIME;
1884         }
1885         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1886 }
1887
1888 static int qeth_peer_func_level(int level)
1889 {
1890         if ((level & 0xff) == 8)
1891                 return (level & 0xff) + 0x400;
1892         if (((level >> 8) & 3) == 1)
1893                 return (level & 0xff) + 0x200;
1894         return level;
1895 }
1896
1897 static void qeth_idx_write_cb(struct qeth_channel *channel,
1898                 struct qeth_cmd_buffer *iob)
1899 {
1900         struct qeth_card *card;
1901         __u16 temp;
1902
1903         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1904
1905         if (channel->state == CH_STATE_DOWN) {
1906                 channel->state = CH_STATE_ACTIVATING;
1907                 goto out;
1908         }
1909         card = CARD_FROM_CDEV(channel->ccwdev);
1910
1911         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1912                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1913                         dev_err(&card->write.ccwdev->dev,
1914                                 "The adapter is used exclusively by another "
1915                                 "host\n");
1916                 else
1917                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1918                                 " negative reply\n",
1919                                 dev_name(&card->write.ccwdev->dev));
1920                 goto out;
1921         }
1922         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1923         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1924                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1925                         "function level mismatch (sent: 0x%x, received: "
1926                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1927                         card->info.func_level, temp);
1928                 goto out;
1929         }
1930         channel->state = CH_STATE_UP;
1931 out:
1932         qeth_release_buffer(channel, iob);
1933 }
1934
1935 static void qeth_idx_read_cb(struct qeth_channel *channel,
1936                 struct qeth_cmd_buffer *iob)
1937 {
1938         struct qeth_card *card;
1939         __u16 temp;
1940
1941         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1942         if (channel->state == CH_STATE_DOWN) {
1943                 channel->state = CH_STATE_ACTIVATING;
1944                 goto out;
1945         }
1946
1947         card = CARD_FROM_CDEV(channel->ccwdev);
1948         if (qeth_check_idx_response(card, iob->data))
1949                         goto out;
1950
1951         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1952                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1953                 case QETH_IDX_ACT_ERR_EXCL:
1954                         dev_err(&card->write.ccwdev->dev,
1955                                 "The adapter is used exclusively by another "
1956                                 "host\n");
1957                         break;
1958                 case QETH_IDX_ACT_ERR_AUTH:
1959                 case QETH_IDX_ACT_ERR_AUTH_USER:
1960                         dev_err(&card->read.ccwdev->dev,
1961                                 "Setting the device online failed because of "
1962                                 "insufficient authorization\n");
1963                         break;
1964                 default:
1965                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1966                                 " negative reply\n",
1967                                 dev_name(&card->read.ccwdev->dev));
1968                 }
1969                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1970                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1971                 goto out;
1972         }
1973
1974 /**
1975  *  * temporary fix for microcode bug
1976  *   * to revert it,replace OR by AND
1977  *    */
1978         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1979              (card->info.type == QETH_CARD_TYPE_OSD))
1980                 card->info.portname_required = 1;
1981
1982         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1983         if (temp != qeth_peer_func_level(card->info.func_level)) {
1984                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1985                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1986                         dev_name(&card->read.ccwdev->dev),
1987                         card->info.func_level, temp);
1988                 goto out;
1989         }
1990         memcpy(&card->token.issuer_rm_r,
1991                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1992                QETH_MPC_TOKEN_LENGTH);
1993         memcpy(&card->info.mcl_level[0],
1994                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1995         channel->state = CH_STATE_UP;
1996 out:
1997         qeth_release_buffer(channel, iob);
1998 }
1999
2000 void qeth_prepare_control_data(struct qeth_card *card, int len,
2001                 struct qeth_cmd_buffer *iob)
2002 {
2003         qeth_setup_ccw(&card->write, iob->data, len);
2004         iob->callback = qeth_release_buffer;
2005
2006         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2007                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2008         card->seqno.trans_hdr++;
2009         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2010                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2011         card->seqno.pdu_hdr++;
2012         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2013                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2014         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2015 }
2016 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2017
2018 int qeth_send_control_data(struct qeth_card *card, int len,
2019                 struct qeth_cmd_buffer *iob,
2020                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2021                         unsigned long),
2022                 void *reply_param)
2023 {
2024         int rc;
2025         unsigned long flags;
2026         struct qeth_reply *reply = NULL;
2027         unsigned long timeout, event_timeout;
2028         struct qeth_ipa_cmd *cmd;
2029
2030         QETH_CARD_TEXT(card, 2, "sendctl");
2031
2032         if (card->read_or_write_problem) {
2033                 qeth_release_buffer(iob->channel, iob);
2034                 return -EIO;
2035         }
2036         reply = qeth_alloc_reply(card);
2037         if (!reply) {
2038                 return -ENOMEM;
2039         }
2040         reply->callback = reply_cb;
2041         reply->param = reply_param;
2042         if (card->state == CARD_STATE_DOWN)
2043                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2044         else
2045                 reply->seqno = card->seqno.ipa++;
2046         init_waitqueue_head(&reply->wait_q);
2047         spin_lock_irqsave(&card->lock, flags);
2048         list_add_tail(&reply->list, &card->cmd_waiter_list);
2049         spin_unlock_irqrestore(&card->lock, flags);
2050         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2051
2052         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2053         qeth_prepare_control_data(card, len, iob);
2054
2055         if (IS_IPA(iob->data))
2056                 event_timeout = QETH_IPA_TIMEOUT;
2057         else
2058                 event_timeout = QETH_TIMEOUT;
2059         timeout = jiffies + event_timeout;
2060
2061         QETH_CARD_TEXT(card, 6, "noirqpnd");
2062         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2063         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2064                               (addr_t) iob, 0, 0);
2065         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2066         if (rc) {
2067                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2068                         "ccw_device_start rc = %i\n",
2069                         dev_name(&card->write.ccwdev->dev), rc);
2070                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2071                 spin_lock_irqsave(&card->lock, flags);
2072                 list_del_init(&reply->list);
2073                 qeth_put_reply(reply);
2074                 spin_unlock_irqrestore(&card->lock, flags);
2075                 qeth_release_buffer(iob->channel, iob);
2076                 atomic_set(&card->write.irq_pending, 0);
2077                 wake_up(&card->wait_q);
2078                 return rc;
2079         }
2080
2081         /* we have only one long running ipassist, since we can ensure
2082            process context of this command we can sleep */
2083         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2084         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2085             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2086                 if (!wait_event_timeout(reply->wait_q,
2087                     atomic_read(&reply->received), event_timeout))
2088                         goto time_err;
2089         } else {
2090                 while (!atomic_read(&reply->received)) {
2091                         if (time_after(jiffies, timeout))
2092                                 goto time_err;
2093                         cpu_relax();
2094                 }
2095         }
2096
2097         if (reply->rc == -EIO)
2098                 goto error;
2099         rc = reply->rc;
2100         qeth_put_reply(reply);
2101         return rc;
2102
2103 time_err:
2104         reply->rc = -ETIME;
2105         spin_lock_irqsave(&reply->card->lock, flags);
2106         list_del_init(&reply->list);
2107         spin_unlock_irqrestore(&reply->card->lock, flags);
2108         atomic_inc(&reply->received);
2109 error:
2110         atomic_set(&card->write.irq_pending, 0);
2111         qeth_release_buffer(iob->channel, iob);
2112         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2113         rc = reply->rc;
2114         qeth_put_reply(reply);
2115         return rc;
2116 }
2117 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2118
2119 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2120                 unsigned long data)
2121 {
2122         struct qeth_cmd_buffer *iob;
2123
2124         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2125
2126         iob = (struct qeth_cmd_buffer *) data;
2127         memcpy(&card->token.cm_filter_r,
2128                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2129                QETH_MPC_TOKEN_LENGTH);
2130         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2131         return 0;
2132 }
2133
2134 static int qeth_cm_enable(struct qeth_card *card)
2135 {
2136         int rc;
2137         struct qeth_cmd_buffer *iob;
2138
2139         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2140
2141         iob = qeth_wait_for_buffer(&card->write);
2142         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2143         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2144                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2145         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2146                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2147
2148         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2149                                     qeth_cm_enable_cb, NULL);
2150         return rc;
2151 }
2152
2153 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2154                 unsigned long data)
2155 {
2156
2157         struct qeth_cmd_buffer *iob;
2158
2159         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2160
2161         iob = (struct qeth_cmd_buffer *) data;
2162         memcpy(&card->token.cm_connection_r,
2163                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2164                QETH_MPC_TOKEN_LENGTH);
2165         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2166         return 0;
2167 }
2168
2169 static int qeth_cm_setup(struct qeth_card *card)
2170 {
2171         int rc;
2172         struct qeth_cmd_buffer *iob;
2173
2174         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2175
2176         iob = qeth_wait_for_buffer(&card->write);
2177         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2178         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2179                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2180         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2181                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2182         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2183                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2184         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2185                                     qeth_cm_setup_cb, NULL);
2186         return rc;
2187
2188 }
2189
2190 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2191 {
2192         switch (card->info.type) {
2193         case QETH_CARD_TYPE_UNKNOWN:
2194                 return 1500;
2195         case QETH_CARD_TYPE_IQD:
2196                 return card->info.max_mtu;
2197         case QETH_CARD_TYPE_OSD:
2198                 switch (card->info.link_type) {
2199                 case QETH_LINK_TYPE_HSTR:
2200                 case QETH_LINK_TYPE_LANE_TR:
2201                         return 2000;
2202                 default:
2203                         return card->options.layer2 ? 1500 : 1492;
2204                 }
2205         case QETH_CARD_TYPE_OSM:
2206         case QETH_CARD_TYPE_OSX:
2207                 return card->options.layer2 ? 1500 : 1492;
2208         default:
2209                 return 1500;
2210         }
2211 }
2212
2213 static inline int qeth_get_mtu_outof_framesize(int framesize)
2214 {
2215         switch (framesize) {
2216         case 0x4000:
2217                 return 8192;
2218         case 0x6000:
2219                 return 16384;
2220         case 0xa000:
2221                 return 32768;
2222         case 0xffff:
2223                 return 57344;
2224         default:
2225                 return 0;
2226         }
2227 }
2228
2229 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2230 {
2231         switch (card->info.type) {
2232         case QETH_CARD_TYPE_OSD:
2233         case QETH_CARD_TYPE_OSM:
2234         case QETH_CARD_TYPE_OSX:
2235         case QETH_CARD_TYPE_IQD:
2236                 return ((mtu >= 576) &&
2237                         (mtu <= card->info.max_mtu));
2238         case QETH_CARD_TYPE_OSN:
2239         case QETH_CARD_TYPE_UNKNOWN:
2240         default:
2241                 return 1;
2242         }
2243 }
2244
2245 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2246                 unsigned long data)
2247 {
2248
2249         __u16 mtu, framesize;
2250         __u16 len;
2251         __u8 link_type;
2252         struct qeth_cmd_buffer *iob;
2253
2254         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2255
2256         iob = (struct qeth_cmd_buffer *) data;
2257         memcpy(&card->token.ulp_filter_r,
2258                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2259                QETH_MPC_TOKEN_LENGTH);
2260         if (card->info.type == QETH_CARD_TYPE_IQD) {
2261                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2262                 mtu = qeth_get_mtu_outof_framesize(framesize);
2263                 if (!mtu) {
2264                         iob->rc = -EINVAL;
2265                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2266                         return 0;
2267                 }
2268                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2269                         /* frame size has changed */
2270                         if (card->dev &&
2271                             ((card->dev->mtu == card->info.initial_mtu) ||
2272                              (card->dev->mtu > mtu)))
2273                                 card->dev->mtu = mtu;
2274                         qeth_free_qdio_buffers(card);
2275                 }
2276                 card->info.initial_mtu = mtu;
2277                 card->info.max_mtu = mtu;
2278                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2279         } else {
2280                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2281                         iob->data);
2282                 card->info.initial_mtu = min(card->info.max_mtu,
2283                                         qeth_get_initial_mtu_for_card(card));
2284                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2285         }
2286
2287         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2288         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2289                 memcpy(&link_type,
2290                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2291                 card->info.link_type = link_type;
2292         } else
2293                 card->info.link_type = 0;
2294         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2295         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2296         return 0;
2297 }
2298
2299 static int qeth_ulp_enable(struct qeth_card *card)
2300 {
2301         int rc;
2302         char prot_type;
2303         struct qeth_cmd_buffer *iob;
2304
2305         /*FIXME: trace view callbacks*/
2306         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2307
2308         iob = qeth_wait_for_buffer(&card->write);
2309         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2310
2311         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2312                 (__u8) card->info.portno;
2313         if (card->options.layer2)
2314                 if (card->info.type == QETH_CARD_TYPE_OSN)
2315                         prot_type = QETH_PROT_OSN2;
2316                 else
2317                         prot_type = QETH_PROT_LAYER2;
2318         else
2319                 prot_type = QETH_PROT_TCPIP;
2320
2321         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2322         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2323                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2324         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2325                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2326         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2327                card->info.portname, 9);
2328         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2329                                     qeth_ulp_enable_cb, NULL);
2330         return rc;
2331
2332 }
2333
2334 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2335                 unsigned long data)
2336 {
2337         struct qeth_cmd_buffer *iob;
2338
2339         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2340
2341         iob = (struct qeth_cmd_buffer *) data;
2342         memcpy(&card->token.ulp_connection_r,
2343                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2344                QETH_MPC_TOKEN_LENGTH);
2345         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2346                      3)) {
2347                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2348                 dev_err(&card->gdev->dev, "A connection could not be "
2349                         "established because of an OLM limit\n");
2350                 iob->rc = -EMLINK;
2351         }
2352         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2353         return 0;
2354 }
2355
2356 static int qeth_ulp_setup(struct qeth_card *card)
2357 {
2358         int rc;
2359         __u16 temp;
2360         struct qeth_cmd_buffer *iob;
2361         struct ccw_dev_id dev_id;
2362
2363         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2364
2365         iob = qeth_wait_for_buffer(&card->write);
2366         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2367
2368         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2369                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2370         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2371                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2372         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2373                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2374
2375         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2376         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2377         temp = (card->info.cula << 8) + card->info.unit_addr2;
2378         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2379         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2380                                     qeth_ulp_setup_cb, NULL);
2381         return rc;
2382 }
2383
2384 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2385 {
2386         int rc;
2387         struct qeth_qdio_out_buffer *newbuf;
2388
2389         rc = 0;
2390         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2391         if (!newbuf) {
2392                 rc = -ENOMEM;
2393                 goto out;
2394         }
2395         newbuf->buffer = &q->qdio_bufs[bidx];
2396         skb_queue_head_init(&newbuf->skb_list);
2397         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2398         newbuf->q = q;
2399         newbuf->aob = NULL;
2400         newbuf->next_pending = q->bufs[bidx];
2401         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2402         q->bufs[bidx] = newbuf;
2403         if (q->bufstates) {
2404                 q->bufstates[bidx].user = newbuf;
2405                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2406                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2407                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2408                                 (long) newbuf->next_pending);
2409         }
2410 out:
2411         return rc;
2412 }
2413
2414
2415 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2416 {
2417         int i, j;
2418
2419         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2420
2421         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2422                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2423                 return 0;
2424
2425         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2426                                    GFP_KERNEL);
2427         if (!card->qdio.in_q)
2428                 goto out_nomem;
2429         QETH_DBF_TEXT(SETUP, 2, "inq");
2430         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2431         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2432         /* give inbound qeth_qdio_buffers their qdio_buffers */
2433         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2434                 card->qdio.in_q->bufs[i].buffer =
2435                         &card->qdio.in_q->qdio_bufs[i];
2436                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2437         }
2438         /* inbound buffer pool */
2439         if (qeth_alloc_buffer_pool(card))
2440                 goto out_freeinq;
2441
2442         /* outbound */
2443         card->qdio.out_qs =
2444                 kzalloc(card->qdio.no_out_queues *
2445                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2446         if (!card->qdio.out_qs)
2447                 goto out_freepool;
2448         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2449                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2450                                                GFP_KERNEL);
2451                 if (!card->qdio.out_qs[i])
2452                         goto out_freeoutq;
2453                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2454                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2455                 card->qdio.out_qs[i]->queue_no = i;
2456                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2457                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2458                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2459                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2460                                 goto out_freeoutqbufs;
2461                 }
2462         }
2463
2464         /* completion */
2465         if (qeth_alloc_cq(card))
2466                 goto out_freeoutq;
2467
2468         return 0;
2469
2470 out_freeoutqbufs:
2471         while (j > 0) {
2472                 --j;
2473                 kmem_cache_free(qeth_qdio_outbuf_cache,
2474                                 card->qdio.out_qs[i]->bufs[j]);
2475                 card->qdio.out_qs[i]->bufs[j] = NULL;
2476         }
2477 out_freeoutq:
2478         while (i > 0) {
2479                 kfree(card->qdio.out_qs[--i]);
2480                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2481         }
2482         kfree(card->qdio.out_qs);
2483         card->qdio.out_qs = NULL;
2484 out_freepool:
2485         qeth_free_buffer_pool(card);
2486 out_freeinq:
2487         kfree(card->qdio.in_q);
2488         card->qdio.in_q = NULL;
2489 out_nomem:
2490         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2491         return -ENOMEM;
2492 }
2493
2494 static void qeth_create_qib_param_field(struct qeth_card *card,
2495                 char *param_field)
2496 {
2497
2498         param_field[0] = _ascebc['P'];
2499         param_field[1] = _ascebc['C'];
2500         param_field[2] = _ascebc['I'];
2501         param_field[3] = _ascebc['T'];
2502         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2503         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2504         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2505 }
2506
2507 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2508                 char *param_field)
2509 {
2510         param_field[16] = _ascebc['B'];
2511         param_field[17] = _ascebc['L'];
2512         param_field[18] = _ascebc['K'];
2513         param_field[19] = _ascebc['T'];
2514         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2515         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2516         *((unsigned int *) (&param_field[28])) =
2517                 card->info.blkt.inter_packet_jumbo;
2518 }
2519
2520 static int qeth_qdio_activate(struct qeth_card *card)
2521 {
2522         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2523         return qdio_activate(CARD_DDEV(card));
2524 }
2525
2526 static int qeth_dm_act(struct qeth_card *card)
2527 {
2528         int rc;
2529         struct qeth_cmd_buffer *iob;
2530
2531         QETH_DBF_TEXT(SETUP, 2, "dmact");
2532
2533         iob = qeth_wait_for_buffer(&card->write);
2534         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2535
2536         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2537                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2538         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2539                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2540         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2541         return rc;
2542 }
2543
2544 static int qeth_mpc_initialize(struct qeth_card *card)
2545 {
2546         int rc;
2547
2548         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2549
2550         rc = qeth_issue_next_read(card);
2551         if (rc) {
2552                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2553                 return rc;
2554         }
2555         rc = qeth_cm_enable(card);
2556         if (rc) {
2557                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2558                 goto out_qdio;
2559         }
2560         rc = qeth_cm_setup(card);
2561         if (rc) {
2562                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2563                 goto out_qdio;
2564         }
2565         rc = qeth_ulp_enable(card);
2566         if (rc) {
2567                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2568                 goto out_qdio;
2569         }
2570         rc = qeth_ulp_setup(card);
2571         if (rc) {
2572                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2573                 goto out_qdio;
2574         }
2575         rc = qeth_alloc_qdio_buffers(card);
2576         if (rc) {
2577                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2578                 goto out_qdio;
2579         }
2580         rc = qeth_qdio_establish(card);
2581         if (rc) {
2582                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2583                 qeth_free_qdio_buffers(card);
2584                 goto out_qdio;
2585         }
2586         rc = qeth_qdio_activate(card);
2587         if (rc) {
2588                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2589                 goto out_qdio;
2590         }
2591         rc = qeth_dm_act(card);
2592         if (rc) {
2593                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2594                 goto out_qdio;
2595         }
2596
2597         return 0;
2598 out_qdio:
2599         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2600         qdio_free(CARD_DDEV(card));
2601         return rc;
2602 }
2603
2604 static void qeth_print_status_with_portname(struct qeth_card *card)
2605 {
2606         char dbf_text[15];
2607         int i;
2608
2609         sprintf(dbf_text, "%s", card->info.portname + 1);
2610         for (i = 0; i < 8; i++)
2611                 dbf_text[i] =
2612                         (char) _ebcasc[(__u8) dbf_text[i]];
2613         dbf_text[8] = 0;
2614         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2615                "with link type %s (portname: %s)\n",
2616                qeth_get_cardname(card),
2617                (card->info.mcl_level[0]) ? " (level: " : "",
2618                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2619                (card->info.mcl_level[0]) ? ")" : "",
2620                qeth_get_cardname_short(card),
2621                dbf_text);
2622
2623 }
2624
2625 static void qeth_print_status_no_portname(struct qeth_card *card)
2626 {
2627         if (card->info.portname[0])
2628                 dev_info(&card->gdev->dev, "Device is a%s "
2629                        "card%s%s%s\nwith link type %s "
2630                        "(no portname needed by interface).\n",
2631                        qeth_get_cardname(card),
2632                        (card->info.mcl_level[0]) ? " (level: " : "",
2633                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2634                        (card->info.mcl_level[0]) ? ")" : "",
2635                        qeth_get_cardname_short(card));
2636         else
2637                 dev_info(&card->gdev->dev, "Device is a%s "
2638                        "card%s%s%s\nwith link type %s.\n",
2639                        qeth_get_cardname(card),
2640                        (card->info.mcl_level[0]) ? " (level: " : "",
2641                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2642                        (card->info.mcl_level[0]) ? ")" : "",
2643                        qeth_get_cardname_short(card));
2644 }
2645
2646 void qeth_print_status_message(struct qeth_card *card)
2647 {
2648         switch (card->info.type) {
2649         case QETH_CARD_TYPE_OSD:
2650         case QETH_CARD_TYPE_OSM:
2651         case QETH_CARD_TYPE_OSX:
2652                 /* VM will use a non-zero first character
2653                  * to indicate a HiperSockets like reporting
2654                  * of the level OSA sets the first character to zero
2655                  * */
2656                 if (!card->info.mcl_level[0]) {
2657                         sprintf(card->info.mcl_level, "%02x%02x",
2658                                 card->info.mcl_level[2],
2659                                 card->info.mcl_level[3]);
2660
2661                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2662                         break;
2663                 }
2664                 /* fallthrough */
2665         case QETH_CARD_TYPE_IQD:
2666                 if ((card->info.guestlan) ||
2667                     (card->info.mcl_level[0] & 0x80)) {
2668                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2669                                 card->info.mcl_level[0]];
2670                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2671                                 card->info.mcl_level[1]];
2672                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2673                                 card->info.mcl_level[2]];
2674                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2675                                 card->info.mcl_level[3]];
2676                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2677                 }
2678                 break;
2679         default:
2680                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2681         }
2682         if (card->info.portname_required)
2683                 qeth_print_status_with_portname(card);
2684         else
2685                 qeth_print_status_no_portname(card);
2686 }
2687 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2688
2689 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2690 {
2691         struct qeth_buffer_pool_entry *entry;
2692
2693         QETH_CARD_TEXT(card, 5, "inwrklst");
2694
2695         list_for_each_entry(entry,
2696                             &card->qdio.init_pool.entry_list, init_list) {
2697                 qeth_put_buffer_pool_entry(card, entry);
2698         }
2699 }
2700
2701 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2702                 struct qeth_card *card)
2703 {
2704         struct list_head *plh;
2705         struct qeth_buffer_pool_entry *entry;
2706         int i, free;
2707         struct page *page;
2708
2709         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2710                 return NULL;
2711
2712         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2713                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2714                 free = 1;
2715                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2716                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2717                                 free = 0;
2718                                 break;
2719                         }
2720                 }
2721                 if (free) {
2722                         list_del_init(&entry->list);
2723                         return entry;
2724                 }
2725         }
2726
2727         /* no free buffer in pool so take first one and swap pages */
2728         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2729                         struct qeth_buffer_pool_entry, list);
2730         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2731                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2732                         page = alloc_page(GFP_ATOMIC);
2733                         if (!page) {
2734                                 return NULL;
2735                         } else {
2736                                 free_page((unsigned long)entry->elements[i]);
2737                                 entry->elements[i] = page_address(page);
2738                                 if (card->options.performance_stats)
2739                                         card->perf_stats.sg_alloc_page_rx++;
2740                         }
2741                 }
2742         }
2743         list_del_init(&entry->list);
2744         return entry;
2745 }
2746
2747 static int qeth_init_input_buffer(struct qeth_card *card,
2748                 struct qeth_qdio_buffer *buf)
2749 {
2750         struct qeth_buffer_pool_entry *pool_entry;
2751         int i;
2752
2753         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2754                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2755                 if (!buf->rx_skb)
2756                         return 1;
2757         }
2758
2759         pool_entry = qeth_find_free_buffer_pool_entry(card);
2760         if (!pool_entry)
2761                 return 1;
2762
2763         /*
2764          * since the buffer is accessed only from the input_tasklet
2765          * there shouldn't be a need to synchronize; also, since we use
2766          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2767          * buffers
2768          */
2769
2770         buf->pool_entry = pool_entry;
2771         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2772                 buf->buffer->element[i].length = PAGE_SIZE;
2773                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2774                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2775                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2776                 else
2777                         buf->buffer->element[i].eflags = 0;
2778                 buf->buffer->element[i].sflags = 0;
2779         }
2780         return 0;
2781 }
2782
2783 int qeth_init_qdio_queues(struct qeth_card *card)
2784 {
2785         int i, j;
2786         int rc;
2787
2788         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2789
2790         /* inbound queue */
2791         memset(card->qdio.in_q->qdio_bufs, 0,
2792                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2793         qeth_initialize_working_pool_list(card);
2794         /*give only as many buffers to hardware as we have buffer pool entries*/
2795         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2796                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2797         card->qdio.in_q->next_buf_to_init =
2798                 card->qdio.in_buf_pool.buf_count - 1;
2799         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2800                      card->qdio.in_buf_pool.buf_count - 1);
2801         if (rc) {
2802                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2803                 return rc;
2804         }
2805
2806         /* completion */
2807         rc = qeth_cq_init(card);
2808         if (rc) {
2809                 return rc;
2810         }
2811
2812         /* outbound queue */
2813         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2814                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2815                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2816                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2817                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2818                                         card->qdio.out_qs[i]->bufs[j],
2819                                         QETH_QDIO_BUF_EMPTY);
2820                 }
2821                 card->qdio.out_qs[i]->card = card;
2822                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2823                 card->qdio.out_qs[i]->do_pack = 0;
2824                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2825                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2826                 atomic_set(&card->qdio.out_qs[i]->state,
2827                            QETH_OUT_Q_UNLOCKED);
2828         }
2829         return 0;
2830 }
2831 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2832
2833 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2834 {
2835         switch (link_type) {
2836         case QETH_LINK_TYPE_HSTR:
2837                 return 2;
2838         default:
2839                 return 1;
2840         }
2841 }
2842
2843 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2844                 struct qeth_ipa_cmd *cmd, __u8 command,
2845                 enum qeth_prot_versions prot)
2846 {
2847         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2848         cmd->hdr.command = command;
2849         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2850         cmd->hdr.seqno = card->seqno.ipa;
2851         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2852         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2853         if (card->options.layer2)
2854                 cmd->hdr.prim_version_no = 2;
2855         else
2856                 cmd->hdr.prim_version_no = 1;
2857         cmd->hdr.param_count = 1;
2858         cmd->hdr.prot_version = prot;
2859         cmd->hdr.ipa_supported = 0;
2860         cmd->hdr.ipa_enabled = 0;
2861 }
2862
2863 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2864                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2865 {
2866         struct qeth_cmd_buffer *iob;
2867         struct qeth_ipa_cmd *cmd;
2868
2869         iob = qeth_wait_for_buffer(&card->write);
2870         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2871         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2872
2873         return iob;
2874 }
2875 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2876
2877 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2878                 char prot_type)
2879 {
2880         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2881         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2882         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2883                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2884 }
2885 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2886
2887 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2888                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2889                         unsigned long),
2890                 void *reply_param)
2891 {
2892         int rc;
2893         char prot_type;
2894
2895         QETH_CARD_TEXT(card, 4, "sendipa");
2896
2897         if (card->options.layer2)
2898                 if (card->info.type == QETH_CARD_TYPE_OSN)
2899                         prot_type = QETH_PROT_OSN2;
2900                 else
2901                         prot_type = QETH_PROT_LAYER2;
2902         else
2903                 prot_type = QETH_PROT_TCPIP;
2904         qeth_prepare_ipa_cmd(card, iob, prot_type);
2905         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2906                                                 iob, reply_cb, reply_param);
2907         if (rc == -ETIME) {
2908                 qeth_clear_ipacmd_list(card);
2909                 qeth_schedule_recovery(card);
2910         }
2911         return rc;
2912 }
2913 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2914
2915 int qeth_send_startlan(struct qeth_card *card)
2916 {
2917         int rc;
2918         struct qeth_cmd_buffer *iob;
2919
2920         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2921
2922         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2923         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2924         return rc;
2925 }
2926 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2927
2928 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2929                 struct qeth_reply *reply, unsigned long data)
2930 {
2931         struct qeth_ipa_cmd *cmd;
2932
2933         QETH_CARD_TEXT(card, 4, "defadpcb");
2934
2935         cmd = (struct qeth_ipa_cmd *) data;
2936         if (cmd->hdr.return_code == 0)
2937                 cmd->hdr.return_code =
2938                         cmd->data.setadapterparms.hdr.return_code;
2939         return 0;
2940 }
2941
2942 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2943                 struct qeth_reply *reply, unsigned long data)
2944 {
2945         struct qeth_ipa_cmd *cmd;
2946
2947         QETH_CARD_TEXT(card, 3, "quyadpcb");
2948
2949         cmd = (struct qeth_ipa_cmd *) data;
2950         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2951                 card->info.link_type =
2952                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2953                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2954         }
2955         card->options.adp.supported_funcs =
2956                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2957         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2958 }
2959
2960 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2961                 __u32 command, __u32 cmdlen)
2962 {
2963         struct qeth_cmd_buffer *iob;
2964         struct qeth_ipa_cmd *cmd;
2965
2966         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2967                                      QETH_PROT_IPV4);
2968         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2969         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2970         cmd->data.setadapterparms.hdr.command_code = command;
2971         cmd->data.setadapterparms.hdr.used_total = 1;
2972         cmd->data.setadapterparms.hdr.seq_no = 1;
2973
2974         return iob;
2975 }
2976
2977 int qeth_query_setadapterparms(struct qeth_card *card)
2978 {
2979         int rc;
2980         struct qeth_cmd_buffer *iob;
2981
2982         QETH_CARD_TEXT(card, 3, "queryadp");
2983         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2984                                    sizeof(struct qeth_ipacmd_setadpparms));
2985         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2986         return rc;
2987 }
2988 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2989
2990 static int qeth_query_ipassists_cb(struct qeth_card *card,
2991                 struct qeth_reply *reply, unsigned long data)
2992 {
2993         struct qeth_ipa_cmd *cmd;
2994
2995         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2996
2997         cmd = (struct qeth_ipa_cmd *) data;
2998
2999         switch (cmd->hdr.return_code) {
3000         case IPA_RC_NOTSUPP:
3001         case IPA_RC_L2_UNSUPPORTED_CMD:
3002                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3003                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3004                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3005                 return -0;
3006         default:
3007                 if (cmd->hdr.return_code) {
3008                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3009                                                 "rc=%d\n",
3010                                                 dev_name(&card->gdev->dev),
3011                                                 cmd->hdr.return_code);
3012                         return 0;
3013                 }
3014         }
3015
3016         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3017                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3018                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3019         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3020                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3021                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3022         } else
3023                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3024                                         "\n", dev_name(&card->gdev->dev));
3025         return 0;
3026 }
3027
3028 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3029 {
3030         int rc;
3031         struct qeth_cmd_buffer *iob;
3032
3033         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3034         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3035         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3036         return rc;
3037 }
3038 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3039
3040 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3041                                 struct qeth_reply *reply, unsigned long data)
3042 {
3043         struct qeth_ipa_cmd *cmd;
3044         struct qeth_switch_info *sw_info;
3045         struct qeth_query_switch_attributes *attrs;
3046
3047         QETH_CARD_TEXT(card, 2, "qswiatcb");
3048         cmd = (struct qeth_ipa_cmd *) data;
3049         sw_info = (struct qeth_switch_info *)reply->param;
3050         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3051                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3052                 sw_info->capabilities = attrs->capabilities;
3053                 sw_info->settings = attrs->settings;
3054                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3055                                                         sw_info->settings);
3056         }
3057         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3058
3059         return 0;
3060 }
3061
3062 int qeth_query_switch_attributes(struct qeth_card *card,
3063                                  struct qeth_switch_info *sw_info)
3064 {
3065         struct qeth_cmd_buffer *iob;
3066
3067         QETH_CARD_TEXT(card, 2, "qswiattr");
3068         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3069                 return -EOPNOTSUPP;
3070         if (!netif_carrier_ok(card->dev))
3071                 return -ENOMEDIUM;
3072         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3073                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3074         return qeth_send_ipa_cmd(card, iob,
3075                                 qeth_query_switch_attributes_cb, sw_info);
3076 }
3077 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3078
3079 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3080                 struct qeth_reply *reply, unsigned long data)
3081 {
3082         struct qeth_ipa_cmd *cmd;
3083         __u16 rc;
3084
3085         cmd = (struct qeth_ipa_cmd *)data;
3086         rc = cmd->hdr.return_code;
3087         if (rc)
3088                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3089         else
3090                 card->info.diagass_support = cmd->data.diagass.ext;
3091         return 0;
3092 }
3093
3094 static int qeth_query_setdiagass(struct qeth_card *card)
3095 {
3096         struct qeth_cmd_buffer *iob;
3097         struct qeth_ipa_cmd    *cmd;
3098
3099         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3100         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3101         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3102         cmd->data.diagass.subcmd_len = 16;
3103         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3104         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3105 }
3106
3107 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3108 {
3109         unsigned long info = get_zeroed_page(GFP_KERNEL);
3110         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3111         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3112         struct ccw_dev_id ccwid;
3113         int level;
3114
3115         tid->chpid = card->info.chpid;
3116         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3117         tid->ssid = ccwid.ssid;
3118         tid->devno = ccwid.devno;
3119         if (!info)
3120                 return;
3121         level = stsi(NULL, 0, 0, 0);
3122         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3123                 tid->lparnr = info222->lpar_number;
3124         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3125                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3126                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3127         }
3128         free_page(info);
3129         return;
3130 }
3131
3132 static int qeth_hw_trap_cb(struct qeth_card *card,
3133                 struct qeth_reply *reply, unsigned long data)
3134 {
3135         struct qeth_ipa_cmd *cmd;
3136         __u16 rc;
3137
3138         cmd = (struct qeth_ipa_cmd *)data;
3139         rc = cmd->hdr.return_code;
3140         if (rc)
3141                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3142         return 0;
3143 }
3144
3145 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3146 {
3147         struct qeth_cmd_buffer *iob;
3148         struct qeth_ipa_cmd *cmd;
3149
3150         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3151         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3152         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3153         cmd->data.diagass.subcmd_len = 80;
3154         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3155         cmd->data.diagass.type = 1;
3156         cmd->data.diagass.action = action;
3157         switch (action) {
3158         case QETH_DIAGS_TRAP_ARM:
3159                 cmd->data.diagass.options = 0x0003;
3160                 cmd->data.diagass.ext = 0x00010000 +
3161                         sizeof(struct qeth_trap_id);
3162                 qeth_get_trap_id(card,
3163                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3164                 break;
3165         case QETH_DIAGS_TRAP_DISARM:
3166                 cmd->data.diagass.options = 0x0001;
3167                 break;
3168         case QETH_DIAGS_TRAP_CAPTURE:
3169                 break;
3170         }
3171         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3172 }
3173 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3174
3175 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3176                 unsigned int qdio_error, const char *dbftext)
3177 {
3178         if (qdio_error) {
3179                 QETH_CARD_TEXT(card, 2, dbftext);
3180                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3181                                buf->element[15].sflags);
3182                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3183                                buf->element[14].sflags);
3184                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3185                 if ((buf->element[15].sflags) == 0x12) {
3186                         card->stats.rx_dropped++;
3187                         return 0;
3188                 } else
3189                         return 1;
3190         }
3191         return 0;
3192 }
3193 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3194
3195 void qeth_buffer_reclaim_work(struct work_struct *work)
3196 {
3197         struct qeth_card *card = container_of(work, struct qeth_card,
3198                 buffer_reclaim_work.work);
3199
3200         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3201         qeth_queue_input_buffer(card, card->reclaim_index);
3202 }
3203
3204 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3205 {
3206         struct qeth_qdio_q *queue = card->qdio.in_q;
3207         struct list_head *lh;
3208         int count;
3209         int i;
3210         int rc;
3211         int newcount = 0;
3212
3213         count = (index < queue->next_buf_to_init)?
3214                 card->qdio.in_buf_pool.buf_count -
3215                 (queue->next_buf_to_init - index) :
3216                 card->qdio.in_buf_pool.buf_count -
3217                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3218         /* only requeue at a certain threshold to avoid SIGAs */
3219         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3220                 for (i = queue->next_buf_to_init;
3221                      i < queue->next_buf_to_init + count; ++i) {
3222                         if (qeth_init_input_buffer(card,
3223                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3224                                 break;
3225                         } else {
3226                                 newcount++;
3227                         }
3228                 }
3229
3230                 if (newcount < count) {
3231                         /* we are in memory shortage so we switch back to
3232                            traditional skb allocation and drop packages */
3233                         atomic_set(&card->force_alloc_skb, 3);
3234                         count = newcount;
3235                 } else {
3236                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3237                 }
3238
3239                 if (!count) {
3240                         i = 0;
3241                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3242                                 i++;
3243                         if (i == card->qdio.in_buf_pool.buf_count) {
3244                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3245                                 card->reclaim_index = index;
3246                                 schedule_delayed_work(
3247                                         &card->buffer_reclaim_work,
3248                                         QETH_RECLAIM_WORK_TIME);
3249                         }
3250                         return;
3251                 }
3252
3253                 /*
3254                  * according to old code it should be avoided to requeue all
3255                  * 128 buffers in order to benefit from PCI avoidance.
3256                  * this function keeps at least one buffer (the buffer at
3257                  * 'index') un-requeued -> this buffer is the first buffer that
3258                  * will be requeued the next time
3259                  */
3260                 if (card->options.performance_stats) {
3261                         card->perf_stats.inbound_do_qdio_cnt++;
3262                         card->perf_stats.inbound_do_qdio_start_time =
3263                                 qeth_get_micros();
3264                 }
3265                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3266                              queue->next_buf_to_init, count);
3267                 if (card->options.performance_stats)
3268                         card->perf_stats.inbound_do_qdio_time +=
3269                                 qeth_get_micros() -
3270                                 card->perf_stats.inbound_do_qdio_start_time;
3271                 if (rc) {
3272                         QETH_CARD_TEXT(card, 2, "qinberr");
3273                 }
3274                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3275                                           QDIO_MAX_BUFFERS_PER_Q;
3276         }
3277 }
3278 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3279
3280 static int qeth_handle_send_error(struct qeth_card *card,
3281                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3282 {
3283         int sbalf15 = buffer->buffer->element[15].sflags;
3284
3285         QETH_CARD_TEXT(card, 6, "hdsnderr");
3286         if (card->info.type == QETH_CARD_TYPE_IQD) {
3287                 if (sbalf15 == 0) {
3288                         qdio_err = 0;
3289                 } else {
3290                         qdio_err = 1;
3291                 }
3292         }
3293         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3294
3295         if (!qdio_err)
3296                 return QETH_SEND_ERROR_NONE;
3297
3298         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3299                 return QETH_SEND_ERROR_RETRY;
3300
3301         QETH_CARD_TEXT(card, 1, "lnkfail");
3302         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3303                        (u16)qdio_err, (u8)sbalf15);
3304         return QETH_SEND_ERROR_LINK_FAILURE;
3305 }
3306
3307 /*
3308  * Switched to packing state if the number of used buffers on a queue
3309  * reaches a certain limit.
3310  */
3311 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3312 {
3313         if (!queue->do_pack) {
3314                 if (atomic_read(&queue->used_buffers)
3315                     >= QETH_HIGH_WATERMARK_PACK){
3316                         /* switch non-PACKING -> PACKING */
3317                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3318                         if (queue->card->options.performance_stats)
3319                                 queue->card->perf_stats.sc_dp_p++;
3320                         queue->do_pack = 1;
3321                 }
3322         }
3323 }
3324
3325 /*
3326  * Switches from packing to non-packing mode. If there is a packing
3327  * buffer on the queue this buffer will be prepared to be flushed.
3328  * In that case 1 is returned to inform the caller. If no buffer
3329  * has to be flushed, zero is returned.
3330  */
3331 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3332 {
3333         struct qeth_qdio_out_buffer *buffer;
3334         int flush_count = 0;
3335
3336         if (queue->do_pack) {
3337                 if (atomic_read(&queue->used_buffers)
3338                     <= QETH_LOW_WATERMARK_PACK) {
3339                         /* switch PACKING -> non-PACKING */
3340                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3341                         if (queue->card->options.performance_stats)
3342                                 queue->card->perf_stats.sc_p_dp++;
3343                         queue->do_pack = 0;
3344                         /* flush packing buffers */
3345                         buffer = queue->bufs[queue->next_buf_to_fill];
3346                         if ((atomic_read(&buffer->state) ==
3347                                                 QETH_QDIO_BUF_EMPTY) &&
3348                             (buffer->next_element_to_fill > 0)) {
3349                                 atomic_set(&buffer->state,
3350                                            QETH_QDIO_BUF_PRIMED);
3351                                 flush_count++;
3352                                 queue->next_buf_to_fill =
3353                                         (queue->next_buf_to_fill + 1) %
3354                                         QDIO_MAX_BUFFERS_PER_Q;
3355                         }
3356                 }
3357         }
3358         return flush_count;
3359 }
3360
3361
3362 /*
3363  * Called to flush a packing buffer if no more pci flags are on the queue.
3364  * Checks if there is a packing buffer and prepares it to be flushed.
3365  * In that case returns 1, otherwise zero.
3366  */
3367 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3368 {
3369         struct qeth_qdio_out_buffer *buffer;
3370
3371         buffer = queue->bufs[queue->next_buf_to_fill];
3372         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3373            (buffer->next_element_to_fill > 0)) {
3374                 /* it's a packing buffer */
3375                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3376                 queue->next_buf_to_fill =
3377                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3378                 return 1;
3379         }
3380         return 0;
3381 }
3382
3383 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3384                                int count)
3385 {
3386         struct qeth_qdio_out_buffer *buf;
3387         int rc;
3388         int i;
3389         unsigned int qdio_flags;
3390
3391         for (i = index; i < index + count; ++i) {
3392                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3393                 buf = queue->bufs[bidx];
3394                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3395                                 SBAL_EFLAGS_LAST_ENTRY;
3396
3397                 if (queue->bufstates)
3398                         queue->bufstates[bidx].user = buf;
3399
3400                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3401                         continue;
3402
3403                 if (!queue->do_pack) {
3404                         if ((atomic_read(&queue->used_buffers) >=
3405                                 (QETH_HIGH_WATERMARK_PACK -
3406                                  QETH_WATERMARK_PACK_FUZZ)) &&
3407                             !atomic_read(&queue->set_pci_flags_count)) {
3408                                 /* it's likely that we'll go to packing
3409                                  * mode soon */
3410                                 atomic_inc(&queue->set_pci_flags_count);
3411                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3412                         }
3413                 } else {
3414                         if (!atomic_read(&queue->set_pci_flags_count)) {
3415                                 /*
3416                                  * there's no outstanding PCI any more, so we
3417                                  * have to request a PCI to be sure the the PCI
3418                                  * will wake at some time in the future then we
3419                                  * can flush packed buffers that might still be
3420                                  * hanging around, which can happen if no
3421                                  * further send was requested by the stack
3422                                  */
3423                                 atomic_inc(&queue->set_pci_flags_count);
3424                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3425                         }
3426                 }
3427         }
3428
3429         queue->card->dev->trans_start = jiffies;
3430         if (queue->card->options.performance_stats) {
3431                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3432                 queue->card->perf_stats.outbound_do_qdio_start_time =
3433                         qeth_get_micros();
3434         }
3435         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3436         if (atomic_read(&queue->set_pci_flags_count))
3437                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3438         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3439                      queue->queue_no, index, count);
3440         if (queue->card->options.performance_stats)
3441                 queue->card->perf_stats.outbound_do_qdio_time +=
3442                         qeth_get_micros() -
3443                         queue->card->perf_stats.outbound_do_qdio_start_time;
3444         atomic_add(count, &queue->used_buffers);
3445         if (rc) {
3446                 queue->card->stats.tx_errors += count;
3447                 /* ignore temporary SIGA errors without busy condition */
3448                 if (rc == -ENOBUFS)
3449                         return;
3450                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3451                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3452                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3453                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3454                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3455
3456                 /* this must not happen under normal circumstances. if it
3457                  * happens something is really wrong -> recover */
3458                 qeth_schedule_recovery(queue->card);
3459                 return;
3460         }
3461         if (queue->card->options.performance_stats)
3462                 queue->card->perf_stats.bufs_sent += count;
3463 }
3464
3465 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3466 {
3467         int index;
3468         int flush_cnt = 0;
3469         int q_was_packing = 0;
3470
3471         /*
3472          * check if weed have to switch to non-packing mode or if
3473          * we have to get a pci flag out on the queue
3474          */
3475         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3476             !atomic_read(&queue->set_pci_flags_count)) {
3477                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3478                                 QETH_OUT_Q_UNLOCKED) {
3479                         /*
3480                          * If we get in here, there was no action in
3481                          * do_send_packet. So, we check if there is a
3482                          * packing buffer to be flushed here.
3483                          */
3484                         netif_stop_queue(queue->card->dev);
3485                         index = queue->next_buf_to_fill;
3486                         q_was_packing = queue->do_pack;
3487                         /* queue->do_pack may change */
3488                         barrier();
3489                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3490                         if (!flush_cnt &&
3491                             !atomic_read(&queue->set_pci_flags_count))
3492                                 flush_cnt +=
3493                                         qeth_flush_buffers_on_no_pci(queue);
3494                         if (queue->card->options.performance_stats &&
3495                             q_was_packing)
3496                                 queue->card->perf_stats.bufs_sent_pack +=
3497                                         flush_cnt;
3498                         if (flush_cnt)
3499                                 qeth_flush_buffers(queue, index, flush_cnt);
3500                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3501                 }
3502         }
3503 }
3504
3505 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3506                 unsigned long card_ptr)
3507 {
3508         struct qeth_card *card = (struct qeth_card *)card_ptr;
3509
3510         if (card->dev && (card->dev->flags & IFF_UP))
3511                 napi_schedule(&card->napi);
3512 }
3513 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3514
3515 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3516 {
3517         int rc;
3518
3519         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3520                 rc = -1;
3521                 goto out;
3522         } else {
3523                 if (card->options.cq == cq) {
3524                         rc = 0;
3525                         goto out;
3526                 }
3527
3528                 if (card->state != CARD_STATE_DOWN &&
3529                     card->state != CARD_STATE_RECOVER) {
3530                         rc = -1;
3531                         goto out;
3532                 }
3533
3534                 qeth_free_qdio_buffers(card);
3535                 card->options.cq = cq;
3536                 rc = 0;
3537         }
3538 out:
3539         return rc;
3540
3541 }
3542 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3543
3544
3545 static void qeth_qdio_cq_handler(struct qeth_card *card,
3546                 unsigned int qdio_err,
3547                 unsigned int queue, int first_element, int count) {
3548         struct qeth_qdio_q *cq = card->qdio.c_q;
3549         int i;
3550         int rc;
3551
3552         if (!qeth_is_cq(card, queue))
3553                 goto out;
3554
3555         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3556         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3557         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3558
3559         if (qdio_err) {
3560                 netif_stop_queue(card->dev);
3561                 qeth_schedule_recovery(card);
3562                 goto out;
3563         }
3564
3565         if (card->options.performance_stats) {
3566                 card->perf_stats.cq_cnt++;
3567                 card->perf_stats.cq_start_time = qeth_get_micros();
3568         }
3569
3570         for (i = first_element; i < first_element + count; ++i) {
3571                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3572                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3573                 int e;
3574
3575                 e = 0;
3576                 while (buffer->element[e].addr) {
3577                         unsigned long phys_aob_addr;
3578
3579                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3580                         qeth_qdio_handle_aob(card, phys_aob_addr);
3581                         buffer->element[e].addr = NULL;
3582                         buffer->element[e].eflags = 0;
3583                         buffer->element[e].sflags = 0;
3584                         buffer->element[e].length = 0;
3585
3586                         ++e;
3587                 }
3588
3589                 buffer->element[15].eflags = 0;
3590                 buffer->element[15].sflags = 0;
3591         }
3592         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3593                     card->qdio.c_q->next_buf_to_init,
3594                     count);
3595         if (rc) {
3596                 dev_warn(&card->gdev->dev,
3597                         "QDIO reported an error, rc=%i\n", rc);
3598                 QETH_CARD_TEXT(card, 2, "qcqherr");
3599         }
3600         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3601                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3602
3603         netif_wake_queue(card->dev);
3604
3605         if (card->options.performance_stats) {
3606                 int delta_t = qeth_get_micros();
3607                 delta_t -= card->perf_stats.cq_start_time;
3608                 card->perf_stats.cq_time += delta_t;
3609         }
3610 out:
3611         return;
3612 }
3613
3614 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3615                 unsigned int queue, int first_elem, int count,
3616                 unsigned long card_ptr)
3617 {
3618         struct qeth_card *card = (struct qeth_card *)card_ptr;
3619
3620         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3621         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3622
3623         if (qeth_is_cq(card, queue))
3624                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3625         else if (qdio_err)
3626                 qeth_schedule_recovery(card);
3627
3628
3629 }
3630 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3631
3632 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3633                 unsigned int qdio_error, int __queue, int first_element,
3634                 int count, unsigned long card_ptr)
3635 {
3636         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3637         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3638         struct qeth_qdio_out_buffer *buffer;
3639         int i;
3640
3641         QETH_CARD_TEXT(card, 6, "qdouhdl");
3642         if (qdio_error & QDIO_ERROR_FATAL) {
3643                 QETH_CARD_TEXT(card, 2, "achkcond");
3644                 netif_stop_queue(card->dev);
3645                 qeth_schedule_recovery(card);
3646                 return;
3647         }
3648         if (card->options.performance_stats) {
3649                 card->perf_stats.outbound_handler_cnt++;
3650                 card->perf_stats.outbound_handler_start_time =
3651                         qeth_get_micros();
3652         }
3653         for (i = first_element; i < (first_element + count); ++i) {
3654                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3655                 buffer = queue->bufs[bidx];
3656                 qeth_handle_send_error(card, buffer, qdio_error);
3657
3658                 if (queue->bufstates &&
3659                     (queue->bufstates[bidx].flags &
3660                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3661                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3662
3663                         if (atomic_cmpxchg(&buffer->state,
3664                                            QETH_QDIO_BUF_PRIMED,
3665                                            QETH_QDIO_BUF_PENDING) ==
3666                                 QETH_QDIO_BUF_PRIMED) {
3667                                 qeth_notify_skbs(queue, buffer,
3668                                                  TX_NOTIFY_PENDING);
3669                         }
3670                         buffer->aob = queue->bufstates[bidx].aob;
3671                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3672                         QETH_CARD_TEXT(queue->card, 5, "aob");
3673                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3674                                         virt_to_phys(buffer->aob));
3675                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3676                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3677                                 qeth_schedule_recovery(card);
3678                         }
3679                 } else {
3680                         if (card->options.cq == QETH_CQ_ENABLED) {
3681                                 enum iucv_tx_notify n;
3682
3683                                 n = qeth_compute_cq_notification(
3684                                         buffer->buffer->element[15].sflags, 0);
3685                                 qeth_notify_skbs(queue, buffer, n);
3686                         }
3687
3688                         qeth_clear_output_buffer(queue, buffer,
3689                                                 QETH_QDIO_BUF_EMPTY);
3690                 }
3691                 qeth_cleanup_handled_pending(queue, bidx, 0);
3692         }
3693         atomic_sub(count, &queue->used_buffers);
3694         /* check if we need to do something on this outbound queue */
3695         if (card->info.type != QETH_CARD_TYPE_IQD)
3696                 qeth_check_outbound_queue(queue);
3697
3698         netif_wake_queue(queue->card->dev);
3699         if (card->options.performance_stats)
3700                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3701                         card->perf_stats.outbound_handler_start_time;
3702 }
3703 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3704
3705 /**
3706  * Note: Function assumes that we have 4 outbound queues.
3707  */
3708 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3709                         int ipv, int cast_type)
3710 {
3711         __be16 *tci;
3712         u8 tos;
3713
3714         if (cast_type && card->info.is_multicast_different)
3715                 return card->info.is_multicast_different &
3716                         (card->qdio.no_out_queues - 1);
3717
3718         switch (card->qdio.do_prio_queueing) {
3719         case QETH_PRIO_Q_ING_TOS:
3720         case QETH_PRIO_Q_ING_PREC:
3721                 switch (ipv) {
3722                 case 4:
3723                         tos = ipv4_get_dsfield(ip_hdr(skb));
3724                         break;
3725                 case 6:
3726                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3727                         break;
3728                 default:
3729                         return card->qdio.default_out_queue;
3730                 }
3731                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3732                         return ~tos >> 6 & 3;
3733                 if (tos & IPTOS_MINCOST)
3734                         return 3;
3735                 if (tos & IPTOS_RELIABILITY)
3736                         return 2;
3737                 if (tos & IPTOS_THROUGHPUT)
3738                         return 1;
3739                 if (tos & IPTOS_LOWDELAY)
3740                         return 0;
3741                 break;
3742         case QETH_PRIO_Q_ING_SKB:
3743                 if (skb->priority > 5)
3744                         return 0;
3745                 return ~skb->priority >> 1 & 3;
3746         case QETH_PRIO_Q_ING_VLAN:
3747                 tci = &((struct ethhdr *)skb->data)->h_proto;
3748                 if (*tci == ETH_P_8021Q)
3749                         return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3750                 break;
3751         default:
3752                 break;
3753         }
3754         return card->qdio.default_out_queue;
3755 }
3756 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3757
3758 int qeth_get_elements_for_frags(struct sk_buff *skb)
3759 {
3760         int cnt, length, e, elements = 0;
3761         struct skb_frag_struct *frag;
3762         char *data;
3763
3764         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3765                 frag = &skb_shinfo(skb)->frags[cnt];
3766                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3767                         frag->page_offset;
3768                 length = frag->size;
3769                 e = PFN_UP((unsigned long)data + length - 1) -
3770                         PFN_DOWN((unsigned long)data);
3771                 elements += e;
3772         }
3773         return elements;
3774 }
3775 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3776
3777 int qeth_get_elements_no(struct qeth_card *card,
3778                      struct sk_buff *skb, int elems)
3779 {
3780         int dlen = skb->len - skb->data_len;
3781         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3782                 PFN_DOWN((unsigned long)skb->data);
3783
3784         elements_needed += qeth_get_elements_for_frags(skb);
3785
3786         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3787                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3788                         "(Number=%d / Length=%d). Discarded.\n",
3789                         (elements_needed+elems), skb->len);
3790                 return 0;
3791         }
3792         return elements_needed;
3793 }
3794 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3795
3796 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3797 {
3798         int hroom, inpage, rest;
3799
3800         if (((unsigned long)skb->data & PAGE_MASK) !=
3801             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3802                 hroom = skb_headroom(skb);
3803                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3804                 rest = len - inpage;
3805                 if (rest > hroom)
3806                         return 1;
3807                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3808                 skb->data -= rest;
3809                 skb->tail -= rest;
3810                 *hdr = (struct qeth_hdr *)skb->data;
3811                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3812         }
3813         return 0;
3814 }
3815 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3816
3817 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3818         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3819         int offset)
3820 {
3821         int length = skb->len - skb->data_len;
3822         int length_here;
3823         int element;
3824         char *data;
3825         int first_lap, cnt;
3826         struct skb_frag_struct *frag;
3827
3828         element = *next_element_to_fill;
3829         data = skb->data;
3830         first_lap = (is_tso == 0 ? 1 : 0);
3831
3832         if (offset >= 0) {
3833                 data = skb->data + offset;
3834                 length -= offset;
3835                 first_lap = 0;
3836         }
3837
3838         while (length > 0) {
3839                 /* length_here is the remaining amount of data in this page */
3840                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3841                 if (length < length_here)
3842                         length_here = length;
3843
3844                 buffer->element[element].addr = data;
3845                 buffer->element[element].length = length_here;
3846                 length -= length_here;
3847                 if (!length) {
3848                         if (first_lap)
3849                                 if (skb_shinfo(skb)->nr_frags)
3850                                         buffer->element[element].eflags =
3851                                                 SBAL_EFLAGS_FIRST_FRAG;
3852                                 else
3853                                         buffer->element[element].eflags = 0;
3854                         else
3855                                 buffer->element[element].eflags =
3856                                     SBAL_EFLAGS_MIDDLE_FRAG;
3857                 } else {
3858                         if (first_lap)
3859                                 buffer->element[element].eflags =
3860                                     SBAL_EFLAGS_FIRST_FRAG;
3861                         else
3862                                 buffer->element[element].eflags =
3863                                     SBAL_EFLAGS_MIDDLE_FRAG;
3864                 }
3865                 data += length_here;
3866                 element++;
3867                 first_lap = 0;
3868         }
3869
3870         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3871                 frag = &skb_shinfo(skb)->frags[cnt];
3872                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3873                         frag->page_offset;
3874                 length = frag->size;
3875                 while (length > 0) {
3876                         length_here = PAGE_SIZE -
3877                                 ((unsigned long) data % PAGE_SIZE);
3878                         if (length < length_here)
3879                                 length_here = length;
3880
3881                         buffer->element[element].addr = data;
3882                         buffer->element[element].length = length_here;
3883                         buffer->element[element].eflags =
3884                                 SBAL_EFLAGS_MIDDLE_FRAG;
3885                         length -= length_here;
3886                         data += length_here;
3887                         element++;
3888                 }
3889         }
3890
3891         if (buffer->element[element - 1].eflags)
3892                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3893         *next_element_to_fill = element;
3894 }
3895
3896 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3897                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3898                 struct qeth_hdr *hdr, int offset, int hd_len)
3899 {
3900         struct qdio_buffer *buffer;
3901         int flush_cnt = 0, hdr_len, large_send = 0;
3902
3903         buffer = buf->buffer;
3904         atomic_inc(&skb->users);
3905         skb_queue_tail(&buf->skb_list, skb);
3906
3907         /*check first on TSO ....*/
3908         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3909                 int element = buf->next_element_to_fill;
3910
3911                 hdr_len = sizeof(struct qeth_hdr_tso) +
3912                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3913                 /*fill first buffer entry only with header information */
3914                 buffer->element[element].addr = skb->data;
3915                 buffer->element[element].length = hdr_len;
3916                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3917                 buf->next_element_to_fill++;
3918                 skb->data += hdr_len;
3919                 skb->len  -= hdr_len;
3920                 large_send = 1;
3921         }
3922
3923         if (offset >= 0) {
3924                 int element = buf->next_element_to_fill;
3925                 buffer->element[element].addr = hdr;
3926                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3927                                                         hd_len;
3928                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3929                 buf->is_header[element] = 1;
3930                 buf->next_element_to_fill++;
3931         }
3932
3933         __qeth_fill_buffer(skb, buffer, large_send,
3934                 (int *)&buf->next_element_to_fill, offset);
3935
3936         if (!queue->do_pack) {
3937                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3938                 /* set state to PRIMED -> will be flushed */
3939                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3940                 flush_cnt = 1;
3941         } else {
3942                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3943                 if (queue->card->options.performance_stats)
3944                         queue->card->perf_stats.skbs_sent_pack++;
3945                 if (buf->next_element_to_fill >=
3946                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3947                         /*
3948                          * packed buffer if full -> set state PRIMED
3949                          * -> will be flushed
3950                          */
3951                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3952                         flush_cnt = 1;
3953                 }
3954         }
3955         return flush_cnt;
3956 }
3957
3958 int qeth_do_send_packet_fast(struct qeth_card *card,
3959                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3960                 struct qeth_hdr *hdr, int elements_needed,
3961                 int offset, int hd_len)
3962 {
3963         struct qeth_qdio_out_buffer *buffer;
3964         int index;
3965
3966         /* spin until we get the queue ... */
3967         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3968                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3969         /* ... now we've got the queue */
3970         index = queue->next_buf_to_fill;
3971         buffer = queue->bufs[queue->next_buf_to_fill];
3972         /*
3973          * check if buffer is empty to make sure that we do not 'overtake'
3974          * ourselves and try to fill a buffer that is already primed
3975          */
3976         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3977                 goto out;
3978         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3979                                           QDIO_MAX_BUFFERS_PER_Q;
3980         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3981         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3982         qeth_flush_buffers(queue, index, 1);
3983         return 0;
3984 out:
3985         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3986         return -EBUSY;
3987 }
3988 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3989
3990 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3991                 struct sk_buff *skb, struct qeth_hdr *hdr,
3992                 int elements_needed)
3993 {
3994         struct qeth_qdio_out_buffer *buffer;
3995         int start_index;
3996         int flush_count = 0;
3997         int do_pack = 0;
3998         int tmp;
3999         int rc = 0;
4000
4001         /* spin until we get the queue ... */
4002         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4003                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4004         start_index = queue->next_buf_to_fill;
4005         buffer = queue->bufs[queue->next_buf_to_fill];
4006         /*
4007          * check if buffer is empty to make sure that we do not 'overtake'
4008          * ourselves and try to fill a buffer that is already primed
4009          */
4010         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4011                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4012                 return -EBUSY;
4013         }
4014         /* check if we need to switch packing state of this queue */
4015         qeth_switch_to_packing_if_needed(queue);
4016         if (queue->do_pack) {
4017                 do_pack = 1;
4018                 /* does packet fit in current buffer? */
4019                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4020                     buffer->next_element_to_fill) < elements_needed) {
4021                         /* ... no -> set state PRIMED */
4022                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4023                         flush_count++;
4024                         queue->next_buf_to_fill =
4025                                 (queue->next_buf_to_fill + 1) %
4026                                 QDIO_MAX_BUFFERS_PER_Q;
4027                         buffer = queue->bufs[queue->next_buf_to_fill];
4028                         /* we did a step forward, so check buffer state
4029                          * again */
4030                         if (atomic_read(&buffer->state) !=
4031                             QETH_QDIO_BUF_EMPTY) {
4032                                 qeth_flush_buffers(queue, start_index,
4033                                                            flush_count);
4034                                 atomic_set(&queue->state,
4035                                                 QETH_OUT_Q_UNLOCKED);
4036                                 return -EBUSY;
4037                         }
4038                 }
4039         }
4040         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4041         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4042                                   QDIO_MAX_BUFFERS_PER_Q;
4043         flush_count += tmp;
4044         if (flush_count)
4045                 qeth_flush_buffers(queue, start_index, flush_count);
4046         else if (!atomic_read(&queue->set_pci_flags_count))
4047                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4048         /*
4049          * queue->state will go from LOCKED -> UNLOCKED or from
4050          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4051          * (switch packing state or flush buffer to get another pci flag out).
4052          * In that case we will enter this loop
4053          */
4054         while (atomic_dec_return(&queue->state)) {
4055                 flush_count = 0;
4056                 start_index = queue->next_buf_to_fill;
4057                 /* check if we can go back to non-packing state */
4058                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4059                 /*
4060                  * check if we need to flush a packing buffer to get a pci
4061                  * flag out on the queue
4062                  */
4063                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4064                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4065                 if (flush_count)
4066                         qeth_flush_buffers(queue, start_index, flush_count);
4067         }
4068         /* at this point the queue is UNLOCKED again */
4069         if (queue->card->options.performance_stats && do_pack)
4070                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4071
4072         return rc;
4073 }
4074 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4075
4076 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4077                 struct qeth_reply *reply, unsigned long data)
4078 {
4079         struct qeth_ipa_cmd *cmd;
4080         struct qeth_ipacmd_setadpparms *setparms;
4081
4082         QETH_CARD_TEXT(card, 4, "prmadpcb");
4083
4084         cmd = (struct qeth_ipa_cmd *) data;
4085         setparms = &(cmd->data.setadapterparms);
4086
4087         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4088         if (cmd->hdr.return_code) {
4089                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4090                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4091         }
4092         card->info.promisc_mode = setparms->data.mode;
4093         return 0;
4094 }
4095
4096 void qeth_setadp_promisc_mode(struct qeth_card *card)
4097 {
4098         enum qeth_ipa_promisc_modes mode;
4099         struct net_device *dev = card->dev;
4100         struct qeth_cmd_buffer *iob;
4101         struct qeth_ipa_cmd *cmd;
4102
4103         QETH_CARD_TEXT(card, 4, "setprom");
4104
4105         if (((dev->flags & IFF_PROMISC) &&
4106              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4107             (!(dev->flags & IFF_PROMISC) &&
4108              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4109                 return;
4110         mode = SET_PROMISC_MODE_OFF;
4111         if (dev->flags & IFF_PROMISC)
4112                 mode = SET_PROMISC_MODE_ON;
4113         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4114
4115         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4116                         sizeof(struct qeth_ipacmd_setadpparms));
4117         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4118         cmd->data.setadapterparms.data.mode = mode;
4119         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4120 }
4121 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4122
4123 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4124 {
4125         struct qeth_card *card;
4126         char dbf_text[15];
4127
4128         card = dev->ml_priv;
4129
4130         QETH_CARD_TEXT(card, 4, "chgmtu");
4131         sprintf(dbf_text, "%8x", new_mtu);
4132         QETH_CARD_TEXT(card, 4, dbf_text);
4133
4134         if (new_mtu < 64)
4135                 return -EINVAL;
4136         if (new_mtu > 65535)
4137                 return -EINVAL;
4138         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4139             (!qeth_mtu_is_valid(card, new_mtu)))
4140                 return -EINVAL;
4141         dev->mtu = new_mtu;
4142         return 0;
4143 }
4144 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4145
4146 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4147 {
4148         struct qeth_card *card;
4149
4150         card = dev->ml_priv;
4151
4152         QETH_CARD_TEXT(card, 5, "getstat");
4153
4154         return &card->stats;
4155 }
4156 EXPORT_SYMBOL_GPL(qeth_get_stats);
4157
4158 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4159                 struct qeth_reply *reply, unsigned long data)
4160 {
4161         struct qeth_ipa_cmd *cmd;
4162
4163         QETH_CARD_TEXT(card, 4, "chgmaccb");
4164
4165         cmd = (struct qeth_ipa_cmd *) data;
4166         if (!card->options.layer2 ||
4167             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4168                 memcpy(card->dev->dev_addr,
4169                        &cmd->data.setadapterparms.data.change_addr.addr,
4170                        OSA_ADDR_LEN);
4171                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4172         }
4173         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4174         return 0;
4175 }
4176
4177 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4178 {
4179         int rc;
4180         struct qeth_cmd_buffer *iob;
4181         struct qeth_ipa_cmd *cmd;
4182
4183         QETH_CARD_TEXT(card, 4, "chgmac");
4184
4185         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4186                                    sizeof(struct qeth_ipacmd_setadpparms));
4187         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4188         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4189         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4190         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4191                card->dev->dev_addr, OSA_ADDR_LEN);
4192         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4193                                NULL);
4194         return rc;
4195 }
4196 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4197
4198 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4199                 struct qeth_reply *reply, unsigned long data)
4200 {
4201         struct qeth_ipa_cmd *cmd;
4202         struct qeth_set_access_ctrl *access_ctrl_req;
4203         int fallback = *(int *)reply->param;
4204
4205         QETH_CARD_TEXT(card, 4, "setaccb");
4206
4207         cmd = (struct qeth_ipa_cmd *) data;
4208         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4209         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4210         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4211         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4212                 cmd->data.setadapterparms.hdr.return_code);
4213         if (cmd->data.setadapterparms.hdr.return_code !=
4214                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4215                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4216                                 card->gdev->dev.kobj.name,
4217                                 access_ctrl_req->subcmd_code,
4218                                 cmd->data.setadapterparms.hdr.return_code);
4219         switch (cmd->data.setadapterparms.hdr.return_code) {
4220         case SET_ACCESS_CTRL_RC_SUCCESS:
4221                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4222                         dev_info(&card->gdev->dev,
4223                             "QDIO data connection isolation is deactivated\n");
4224                 } else {
4225                         dev_info(&card->gdev->dev,
4226                             "QDIO data connection isolation is activated\n");
4227                 }
4228                 break;
4229         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4230                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4231                                 "deactivated\n", dev_name(&card->gdev->dev));
4232                 if (fallback)
4233                         card->options.isolation = card->options.prev_isolation;
4234                 break;
4235         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4236                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4237                                 " activated\n", dev_name(&card->gdev->dev));
4238                 if (fallback)
4239                         card->options.isolation = card->options.prev_isolation;
4240                 break;
4241         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4242                 dev_err(&card->gdev->dev, "Adapter does not "
4243                         "support QDIO data connection isolation\n");
4244                 break;
4245         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4246                 dev_err(&card->gdev->dev,
4247                         "Adapter is dedicated. "
4248                         "QDIO data connection isolation not supported\n");
4249                 if (fallback)
4250                         card->options.isolation = card->options.prev_isolation;
4251                 break;
4252         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4253                 dev_err(&card->gdev->dev,
4254                         "TSO does not permit QDIO data connection isolation\n");
4255                 if (fallback)
4256                         card->options.isolation = card->options.prev_isolation;
4257                 break;
4258         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4259                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4260                         "support reflective relay mode\n");
4261                 if (fallback)
4262                         card->options.isolation = card->options.prev_isolation;
4263                 break;
4264         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4265                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4266                                         "enabled at the adjacent switch port");
4267                 if (fallback)
4268                         card->options.isolation = card->options.prev_isolation;
4269                 break;
4270         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4271                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4272                                         "at the adjacent switch failed\n");
4273                 break;
4274         default:
4275                 /* this should never happen */
4276                 if (fallback)
4277                         card->options.isolation = card->options.prev_isolation;
4278                 break;
4279         }
4280         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4281         return 0;
4282 }
4283
4284 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4285                 enum qeth_ipa_isolation_modes isolation, int fallback)
4286 {
4287         int rc;
4288         struct qeth_cmd_buffer *iob;
4289         struct qeth_ipa_cmd *cmd;
4290         struct qeth_set_access_ctrl *access_ctrl_req;
4291
4292         QETH_CARD_TEXT(card, 4, "setacctl");
4293
4294         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4295         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4296
4297         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4298                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4299                                    sizeof(struct qeth_set_access_ctrl));
4300         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4301         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4302         access_ctrl_req->subcmd_code = isolation;
4303
4304         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4305                                &fallback);
4306         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4307         return rc;
4308 }
4309
4310 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4311 {
4312         int rc = 0;
4313
4314         QETH_CARD_TEXT(card, 4, "setactlo");
4315
4316         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4317              card->info.type == QETH_CARD_TYPE_OSX) &&
4318              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4319                 rc = qeth_setadpparms_set_access_ctrl(card,
4320                         card->options.isolation, fallback);
4321                 if (rc) {
4322                         QETH_DBF_MESSAGE(3,
4323                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4324                                 card->gdev->dev.kobj.name,
4325                                 rc);
4326                         rc = -EOPNOTSUPP;
4327                 }
4328         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4329                 card->options.isolation = ISOLATION_MODE_NONE;
4330
4331                 dev_err(&card->gdev->dev, "Adapter does not "
4332                         "support QDIO data connection isolation\n");
4333                 rc = -EOPNOTSUPP;
4334         }
4335         return rc;
4336 }
4337 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4338
4339 void qeth_tx_timeout(struct net_device *dev)
4340 {
4341         struct qeth_card *card;
4342
4343         card = dev->ml_priv;
4344         QETH_CARD_TEXT(card, 4, "txtimeo");
4345         card->stats.tx_errors++;
4346         qeth_schedule_recovery(card);
4347 }
4348 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4349
4350 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4351 {
4352         struct qeth_card *card = dev->ml_priv;
4353         int rc = 0;
4354
4355         switch (regnum) {
4356         case MII_BMCR: /* Basic mode control register */
4357                 rc = BMCR_FULLDPLX;
4358                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4359                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4360                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4361                         rc |= BMCR_SPEED100;
4362                 break;
4363         case MII_BMSR: /* Basic mode status register */
4364                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4365                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4366                      BMSR_100BASE4;
4367                 break;
4368         case MII_PHYSID1: /* PHYS ID 1 */
4369                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4370                      dev->dev_addr[2];
4371                 rc = (rc >> 5) & 0xFFFF;
4372                 break;
4373         case MII_PHYSID2: /* PHYS ID 2 */
4374                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4375                 break;
4376         case MII_ADVERTISE: /* Advertisement control reg */
4377                 rc = ADVERTISE_ALL;
4378                 break;
4379         case MII_LPA: /* Link partner ability reg */
4380                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4381                      LPA_100BASE4 | LPA_LPACK;
4382                 break;
4383         case MII_EXPANSION: /* Expansion register */
4384                 break;
4385         case MII_DCOUNTER: /* disconnect counter */
4386                 break;
4387         case MII_FCSCOUNTER: /* false carrier counter */
4388                 break;
4389         case MII_NWAYTEST: /* N-way auto-neg test register */
4390                 break;
4391         case MII_RERRCOUNTER: /* rx error counter */
4392                 rc = card->stats.rx_errors;
4393                 break;
4394         case MII_SREVISION: /* silicon revision */
4395                 break;
4396         case MII_RESV1: /* reserved 1 */
4397                 break;
4398         case MII_LBRERROR: /* loopback, rx, bypass error */
4399                 break;
4400         case MII_PHYADDR: /* physical address */
4401                 break;
4402         case MII_RESV2: /* reserved 2 */
4403                 break;
4404         case MII_TPISTATUS: /* TPI status for 10mbps */
4405                 break;
4406         case MII_NCONFIG: /* network interface config */
4407                 break;
4408         default:
4409                 break;
4410         }
4411         return rc;
4412 }
4413 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4414
4415 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4416                 struct qeth_cmd_buffer *iob, int len,
4417                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4418                         unsigned long),
4419                 void *reply_param)
4420 {
4421         u16 s1, s2;
4422
4423         QETH_CARD_TEXT(card, 4, "sendsnmp");
4424
4425         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4426         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4427                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4428         /* adjust PDU length fields in IPA_PDU_HEADER */
4429         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4430         s2 = (u32) len;
4431         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4432         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4433         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4434         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4435         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4436                                       reply_cb, reply_param);
4437 }
4438
4439 static int qeth_snmp_command_cb(struct qeth_card *card,
4440                 struct qeth_reply *reply, unsigned long sdata)
4441 {
4442         struct qeth_ipa_cmd *cmd;
4443         struct qeth_arp_query_info *qinfo;
4444         struct qeth_snmp_cmd *snmp;
4445         unsigned char *data;
4446         __u16 data_len;
4447
4448         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4449
4450         cmd = (struct qeth_ipa_cmd *) sdata;
4451         data = (unsigned char *)((char *)cmd - reply->offset);
4452         qinfo = (struct qeth_arp_query_info *) reply->param;
4453         snmp = &cmd->data.setadapterparms.data.snmp;
4454
4455         if (cmd->hdr.return_code) {
4456                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4457                 return 0;
4458         }
4459         if (cmd->data.setadapterparms.hdr.return_code) {
4460                 cmd->hdr.return_code =
4461                         cmd->data.setadapterparms.hdr.return_code;
4462                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4463                 return 0;
4464         }
4465         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4466         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4467                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4468         else
4469                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4470
4471         /* check if there is enough room in userspace */
4472         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4473                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4474                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4475                 return 0;
4476         }
4477         QETH_CARD_TEXT_(card, 4, "snore%i",
4478                        cmd->data.setadapterparms.hdr.used_total);
4479         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4480                 cmd->data.setadapterparms.hdr.seq_no);
4481         /*copy entries to user buffer*/
4482         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4483                 memcpy(qinfo->udata + qinfo->udata_offset,
4484                        (char *)snmp,
4485                        data_len + offsetof(struct qeth_snmp_cmd, data));
4486                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4487         } else {
4488                 memcpy(qinfo->udata + qinfo->udata_offset,
4489                        (char *)&snmp->request, data_len);
4490         }
4491         qinfo->udata_offset += data_len;
4492         /* check if all replies received ... */
4493                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4494                                cmd->data.setadapterparms.hdr.used_total);
4495                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4496                                cmd->data.setadapterparms.hdr.seq_no);
4497         if (cmd->data.setadapterparms.hdr.seq_no <
4498             cmd->data.setadapterparms.hdr.used_total)
4499                 return 1;
4500         return 0;
4501 }
4502
4503 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4504 {
4505         struct qeth_cmd_buffer *iob;
4506         struct qeth_ipa_cmd *cmd;
4507         struct qeth_snmp_ureq *ureq;
4508         unsigned int req_len;
4509         struct qeth_arp_query_info qinfo = {0, };
4510         int rc = 0;
4511
4512         QETH_CARD_TEXT(card, 3, "snmpcmd");
4513
4514         if (card->info.guestlan)
4515                 return -EOPNOTSUPP;
4516
4517         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4518             (!card->options.layer2)) {
4519                 return -EOPNOTSUPP;
4520         }
4521         /* skip 4 bytes (data_len struct member) to get req_len */
4522         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4523                 return -EFAULT;
4524         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4525                        sizeof(struct qeth_ipacmd_hdr) -
4526                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4527                 return -EINVAL;
4528         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4529         if (IS_ERR(ureq)) {
4530                 QETH_CARD_TEXT(card, 2, "snmpnome");
4531                 return PTR_ERR(ureq);
4532         }
4533         qinfo.udata_len = ureq->hdr.data_len;
4534         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4535         if (!qinfo.udata) {
4536                 kfree(ureq);
4537                 return -ENOMEM;
4538         }
4539         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4540
4541         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4542                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4543         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4544         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4545         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4546                                     qeth_snmp_command_cb, (void *)&qinfo);
4547         if (rc)
4548                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4549                            QETH_CARD_IFNAME(card), rc);
4550         else {
4551                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4552                         rc = -EFAULT;
4553         }
4554
4555         kfree(ureq);
4556         kfree(qinfo.udata);
4557         return rc;
4558 }
4559 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4560
4561 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4562                 struct qeth_reply *reply, unsigned long data)
4563 {
4564         struct qeth_ipa_cmd *cmd;
4565         struct qeth_qoat_priv *priv;
4566         char *resdata;
4567         int resdatalen;
4568
4569         QETH_CARD_TEXT(card, 3, "qoatcb");
4570
4571         cmd = (struct qeth_ipa_cmd *)data;
4572         priv = (struct qeth_qoat_priv *)reply->param;
4573         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4574         resdata = (char *)data + 28;
4575
4576         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4577                 cmd->hdr.return_code = IPA_RC_FFFF;
4578                 return 0;
4579         }
4580
4581         memcpy((priv->buffer + priv->response_len), resdata,
4582                 resdatalen);
4583         priv->response_len += resdatalen;
4584
4585         if (cmd->data.setadapterparms.hdr.seq_no <
4586             cmd->data.setadapterparms.hdr.used_total)
4587                 return 1;
4588         return 0;
4589 }
4590
4591 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4592 {
4593         int rc = 0;
4594         struct qeth_cmd_buffer *iob;
4595         struct qeth_ipa_cmd *cmd;
4596         struct qeth_query_oat *oat_req;
4597         struct qeth_query_oat_data oat_data;
4598         struct qeth_qoat_priv priv;
4599         void __user *tmp;
4600
4601         QETH_CARD_TEXT(card, 3, "qoatcmd");
4602
4603         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4604                 rc = -EOPNOTSUPP;
4605                 goto out;
4606         }
4607
4608         if (copy_from_user(&oat_data, udata,
4609             sizeof(struct qeth_query_oat_data))) {
4610                         rc = -EFAULT;
4611                         goto out;
4612         }
4613
4614         priv.buffer_len = oat_data.buffer_len;
4615         priv.response_len = 0;
4616         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4617         if (!priv.buffer) {
4618                 rc = -ENOMEM;
4619                 goto out;
4620         }
4621
4622         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4623                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4624                                    sizeof(struct qeth_query_oat));
4625         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4626         oat_req = &cmd->data.setadapterparms.data.query_oat;
4627         oat_req->subcmd_code = oat_data.command;
4628
4629         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4630                                &priv);
4631         if (!rc) {
4632                 if (is_compat_task())
4633                         tmp = compat_ptr(oat_data.ptr);
4634                 else
4635                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4636
4637                 if (copy_to_user(tmp, priv.buffer,
4638                     priv.response_len)) {
4639                         rc = -EFAULT;
4640                         goto out_free;
4641                 }
4642
4643                 oat_data.response_len = priv.response_len;
4644
4645                 if (copy_to_user(udata, &oat_data,
4646                     sizeof(struct qeth_query_oat_data)))
4647                         rc = -EFAULT;
4648         } else
4649                 if (rc == IPA_RC_FFFF)
4650                         rc = -EFAULT;
4651
4652 out_free:
4653         kfree(priv.buffer);
4654 out:
4655         return rc;
4656 }
4657 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4658
4659 static int qeth_query_card_info_cb(struct qeth_card *card,
4660                                    struct qeth_reply *reply, unsigned long data)
4661 {
4662         struct qeth_ipa_cmd *cmd;
4663         struct qeth_query_card_info *card_info;
4664         struct carrier_info *carrier_info;
4665
4666         QETH_CARD_TEXT(card, 2, "qcrdincb");
4667         carrier_info = (struct carrier_info *)reply->param;
4668         cmd = (struct qeth_ipa_cmd *)data;
4669         card_info = &cmd->data.setadapterparms.data.card_info;
4670         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4671                 carrier_info->card_type = card_info->card_type;
4672                 carrier_info->port_mode = card_info->port_mode;
4673                 carrier_info->port_speed = card_info->port_speed;
4674         }
4675
4676         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4677         return 0;
4678 }
4679
4680 int qeth_query_card_info(struct qeth_card *card,
4681                                 struct carrier_info *carrier_info)
4682 {
4683         struct qeth_cmd_buffer *iob;
4684
4685         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4686         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4687                 return -EOPNOTSUPP;
4688         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4689                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4690         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4691                                         (void *)carrier_info);
4692 }
4693 EXPORT_SYMBOL_GPL(qeth_query_card_info);
4694
4695 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4696 {
4697         switch (card->info.type) {
4698         case QETH_CARD_TYPE_IQD:
4699                 return 2;
4700         default:
4701                 return 0;
4702         }
4703 }
4704
4705 static void qeth_determine_capabilities(struct qeth_card *card)
4706 {
4707         int rc;
4708         int length;
4709         char *prcd;
4710         struct ccw_device *ddev;
4711         int ddev_offline = 0;
4712
4713         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4714         ddev = CARD_DDEV(card);
4715         if (!ddev->online) {
4716                 ddev_offline = 1;
4717                 rc = ccw_device_set_online(ddev);
4718                 if (rc) {
4719                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4720                         goto out;
4721                 }
4722         }
4723
4724         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4725         if (rc) {
4726                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4727                         dev_name(&card->gdev->dev), rc);
4728                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4729                 goto out_offline;
4730         }
4731         qeth_configure_unitaddr(card, prcd);
4732         if (ddev_offline)
4733                 qeth_configure_blkt_default(card, prcd);
4734         kfree(prcd);
4735
4736         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4737         if (rc)
4738                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4739
4740         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4741         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4742         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4743         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4744         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4745             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4746             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4747                 dev_info(&card->gdev->dev,
4748                         "Completion Queueing supported\n");
4749         } else {
4750                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4751         }
4752
4753
4754 out_offline:
4755         if (ddev_offline == 1)
4756                 ccw_device_set_offline(ddev);
4757 out:
4758         return;
4759 }
4760
4761 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4762         struct qdio_buffer **in_sbal_ptrs,
4763         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4764         int i;
4765
4766         if (card->options.cq == QETH_CQ_ENABLED) {
4767                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4768                              (card->qdio.no_in_queues - 1);
4769                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4770                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4771                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4772                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4773                 }
4774
4775                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4776         }
4777 }
4778
4779 static int qeth_qdio_establish(struct qeth_card *card)
4780 {
4781         struct qdio_initialize init_data;
4782         char *qib_param_field;
4783         struct qdio_buffer **in_sbal_ptrs;
4784         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4785         struct qdio_buffer **out_sbal_ptrs;
4786         int i, j, k;
4787         int rc = 0;
4788
4789         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4790
4791         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4792                               GFP_KERNEL);
4793         if (!qib_param_field) {
4794                 rc =  -ENOMEM;
4795                 goto out_free_nothing;
4796         }
4797
4798         qeth_create_qib_param_field(card, qib_param_field);
4799         qeth_create_qib_param_field_blkt(card, qib_param_field);
4800
4801         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4802                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4803                                GFP_KERNEL);
4804         if (!in_sbal_ptrs) {
4805                 rc = -ENOMEM;
4806                 goto out_free_qib_param;
4807         }
4808         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4809                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4810                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4811         }
4812
4813         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4814                                    GFP_KERNEL);
4815         if (!queue_start_poll) {
4816                 rc = -ENOMEM;
4817                 goto out_free_in_sbals;
4818         }
4819         for (i = 0; i < card->qdio.no_in_queues; ++i)
4820                 queue_start_poll[i] = card->discipline->start_poll;
4821
4822         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4823
4824         out_sbal_ptrs =
4825                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4826                         sizeof(void *), GFP_KERNEL);
4827         if (!out_sbal_ptrs) {
4828                 rc = -ENOMEM;
4829                 goto out_free_queue_start_poll;
4830         }
4831         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4832                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4833                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4834                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4835                 }
4836
4837         memset(&init_data, 0, sizeof(struct qdio_initialize));
4838         init_data.cdev                   = CARD_DDEV(card);
4839         init_data.q_format               = qeth_get_qdio_q_format(card);
4840         init_data.qib_param_field_format = 0;
4841         init_data.qib_param_field        = qib_param_field;
4842         init_data.no_input_qs            = card->qdio.no_in_queues;
4843         init_data.no_output_qs           = card->qdio.no_out_queues;
4844         init_data.input_handler          = card->discipline->input_handler;
4845         init_data.output_handler         = card->discipline->output_handler;
4846         init_data.queue_start_poll_array = queue_start_poll;
4847         init_data.int_parm               = (unsigned long) card;
4848         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4849         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4850         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4851         init_data.scan_threshold =
4852                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4853
4854         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4855                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4856                 rc = qdio_allocate(&init_data);
4857                 if (rc) {
4858                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4859                         goto out;
4860                 }
4861                 rc = qdio_establish(&init_data);
4862                 if (rc) {
4863                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4864                         qdio_free(CARD_DDEV(card));
4865                 }
4866         }
4867
4868         switch (card->options.cq) {
4869         case QETH_CQ_ENABLED:
4870                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4871                 break;
4872         case QETH_CQ_DISABLED:
4873                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4874                 break;
4875         default:
4876                 break;
4877         }
4878 out:
4879         kfree(out_sbal_ptrs);
4880 out_free_queue_start_poll:
4881         kfree(queue_start_poll);
4882 out_free_in_sbals:
4883         kfree(in_sbal_ptrs);
4884 out_free_qib_param:
4885         kfree(qib_param_field);
4886 out_free_nothing:
4887         return rc;
4888 }
4889
4890 static void qeth_core_free_card(struct qeth_card *card)
4891 {
4892
4893         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4894         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4895         qeth_clean_channel(&card->read);
4896         qeth_clean_channel(&card->write);
4897         if (card->dev)
4898                 free_netdev(card->dev);
4899         kfree(card->ip_tbd_list);
4900         qeth_free_qdio_buffers(card);
4901         unregister_service_level(&card->qeth_service_level);
4902         kfree(card);
4903 }
4904
4905 void qeth_trace_features(struct qeth_card *card)
4906 {
4907         QETH_CARD_TEXT(card, 2, "features");
4908         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4909         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4910         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4911         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4912         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4913         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4914         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4915 }
4916 EXPORT_SYMBOL_GPL(qeth_trace_features);
4917
4918 static struct ccw_device_id qeth_ids[] = {
4919         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4920                                         .driver_info = QETH_CARD_TYPE_OSD},
4921         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4922                                         .driver_info = QETH_CARD_TYPE_IQD},
4923         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4924                                         .driver_info = QETH_CARD_TYPE_OSN},
4925         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4926                                         .driver_info = QETH_CARD_TYPE_OSM},
4927         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4928                                         .driver_info = QETH_CARD_TYPE_OSX},
4929         {},
4930 };
4931 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4932
4933 static struct ccw_driver qeth_ccw_driver = {
4934         .driver = {
4935                 .owner = THIS_MODULE,
4936                 .name = "qeth",
4937         },
4938         .ids = qeth_ids,
4939         .probe = ccwgroup_probe_ccwdev,
4940         .remove = ccwgroup_remove_ccwdev,
4941 };
4942
4943 int qeth_core_hardsetup_card(struct qeth_card *card)
4944 {
4945         int retries = 3;
4946         int rc;
4947
4948         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4949         atomic_set(&card->force_alloc_skb, 0);
4950         qeth_update_from_chp_desc(card);
4951 retry:
4952         if (retries < 3)
4953                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4954                         dev_name(&card->gdev->dev));
4955         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4956         ccw_device_set_offline(CARD_DDEV(card));
4957         ccw_device_set_offline(CARD_WDEV(card));
4958         ccw_device_set_offline(CARD_RDEV(card));
4959         qdio_free(CARD_DDEV(card));
4960         rc = ccw_device_set_online(CARD_RDEV(card));
4961         if (rc)
4962                 goto retriable;
4963         rc = ccw_device_set_online(CARD_WDEV(card));
4964         if (rc)
4965                 goto retriable;
4966         rc = ccw_device_set_online(CARD_DDEV(card));
4967         if (rc)
4968                 goto retriable;
4969 retriable:
4970         if (rc == -ERESTARTSYS) {
4971                 QETH_DBF_TEXT(SETUP, 2, "break1");
4972                 return rc;
4973         } else if (rc) {
4974                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4975                 if (--retries < 0)
4976                         goto out;
4977                 else
4978                         goto retry;
4979         }
4980         qeth_determine_capabilities(card);
4981         qeth_init_tokens(card);
4982         qeth_init_func_level(card);
4983         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4984         if (rc == -ERESTARTSYS) {
4985                 QETH_DBF_TEXT(SETUP, 2, "break2");
4986                 return rc;
4987         } else if (rc) {
4988                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4989                 if (--retries < 0)
4990                         goto out;
4991                 else
4992                         goto retry;
4993         }
4994         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4995         if (rc == -ERESTARTSYS) {
4996                 QETH_DBF_TEXT(SETUP, 2, "break3");
4997                 return rc;
4998         } else if (rc) {
4999                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5000                 if (--retries < 0)
5001                         goto out;
5002                 else
5003                         goto retry;
5004         }
5005         card->read_or_write_problem = 0;
5006         rc = qeth_mpc_initialize(card);
5007         if (rc) {
5008                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5009                 goto out;
5010         }
5011
5012         card->options.ipa4.supported_funcs = 0;
5013         card->options.adp.supported_funcs = 0;
5014         card->options.sbp.supported_funcs = 0;
5015         card->info.diagass_support = 0;
5016         qeth_query_ipassists(card, QETH_PROT_IPV4);
5017         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
5018                 qeth_query_setadapterparms(card);
5019         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
5020                 qeth_query_setdiagass(card);
5021         return 0;
5022 out:
5023         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5024                 "an error on the device\n");
5025         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5026                 dev_name(&card->gdev->dev), rc);
5027         return rc;
5028 }
5029 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5030
5031 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5032                 struct qdio_buffer_element *element,
5033                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5034 {
5035         struct page *page = virt_to_page(element->addr);
5036         if (*pskb == NULL) {
5037                 if (qethbuffer->rx_skb) {
5038                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5039                         *pskb = qethbuffer->rx_skb;
5040                         qethbuffer->rx_skb = NULL;
5041                 } else {
5042                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5043                         if (!(*pskb))
5044                                 return -ENOMEM;
5045                 }
5046
5047                 skb_reserve(*pskb, ETH_HLEN);
5048                 if (data_len <= QETH_RX_PULL_LEN) {
5049                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5050                                 data_len);
5051                 } else {
5052                         get_page(page);
5053                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5054                                element->addr + offset, QETH_RX_PULL_LEN);
5055                         skb_fill_page_desc(*pskb, *pfrag, page,
5056                                 offset + QETH_RX_PULL_LEN,
5057                                 data_len - QETH_RX_PULL_LEN);
5058                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5059                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5060                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5061                         (*pfrag)++;
5062                 }
5063         } else {
5064                 get_page(page);
5065                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5066                 (*pskb)->data_len += data_len;
5067                 (*pskb)->len      += data_len;
5068                 (*pskb)->truesize += data_len;
5069                 (*pfrag)++;
5070         }
5071
5072
5073         return 0;
5074 }
5075
5076 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5077                 struct qeth_qdio_buffer *qethbuffer,
5078                 struct qdio_buffer_element **__element, int *__offset,
5079                 struct qeth_hdr **hdr)
5080 {
5081         struct qdio_buffer_element *element = *__element;
5082         struct qdio_buffer *buffer = qethbuffer->buffer;
5083         int offset = *__offset;
5084         struct sk_buff *skb = NULL;
5085         int skb_len = 0;
5086         void *data_ptr;
5087         int data_len;
5088         int headroom = 0;
5089         int use_rx_sg = 0;
5090         int frag = 0;
5091
5092         /* qeth_hdr must not cross element boundaries */
5093         if (element->length < offset + sizeof(struct qeth_hdr)) {
5094                 if (qeth_is_last_sbale(element))
5095                         return NULL;
5096                 element++;
5097                 offset = 0;
5098                 if (element->length < sizeof(struct qeth_hdr))
5099                         return NULL;
5100         }
5101         *hdr = element->addr + offset;
5102
5103         offset += sizeof(struct qeth_hdr);
5104         switch ((*hdr)->hdr.l2.id) {
5105         case QETH_HEADER_TYPE_LAYER2:
5106                 skb_len = (*hdr)->hdr.l2.pkt_length;
5107                 break;
5108         case QETH_HEADER_TYPE_LAYER3:
5109                 skb_len = (*hdr)->hdr.l3.length;
5110                 headroom = ETH_HLEN;
5111                 break;
5112         case QETH_HEADER_TYPE_OSN:
5113                 skb_len = (*hdr)->hdr.osn.pdu_length;
5114                 headroom = sizeof(struct qeth_hdr);
5115                 break;
5116         default:
5117                 break;
5118         }
5119
5120         if (!skb_len)
5121                 return NULL;
5122
5123         if (((skb_len >= card->options.rx_sg_cb) &&
5124              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5125              (!atomic_read(&card->force_alloc_skb))) ||
5126             (card->options.cq == QETH_CQ_ENABLED)) {
5127                 use_rx_sg = 1;
5128         } else {
5129                 skb = dev_alloc_skb(skb_len + headroom);
5130                 if (!skb)
5131                         goto no_mem;
5132                 if (headroom)
5133                         skb_reserve(skb, headroom);
5134         }
5135
5136         data_ptr = element->addr + offset;
5137         while (skb_len) {
5138                 data_len = min(skb_len, (int)(element->length - offset));
5139                 if (data_len) {
5140                         if (use_rx_sg) {
5141                                 if (qeth_create_skb_frag(qethbuffer, element,
5142                                     &skb, offset, &frag, data_len))
5143                                         goto no_mem;
5144                         } else {
5145                                 memcpy(skb_put(skb, data_len), data_ptr,
5146                                         data_len);
5147                         }
5148                 }
5149                 skb_len -= data_len;
5150                 if (skb_len) {
5151                         if (qeth_is_last_sbale(element)) {
5152                                 QETH_CARD_TEXT(card, 4, "unexeob");
5153                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5154                                 dev_kfree_skb_any(skb);
5155                                 card->stats.rx_errors++;
5156                                 return NULL;
5157                         }
5158                         element++;
5159                         offset = 0;
5160                         data_ptr = element->addr;
5161                 } else {
5162                         offset += data_len;
5163                 }
5164         }
5165         *__element = element;
5166         *__offset = offset;
5167         if (use_rx_sg && card->options.performance_stats) {
5168                 card->perf_stats.sg_skbs_rx++;
5169                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5170         }
5171         return skb;
5172 no_mem:
5173         if (net_ratelimit()) {
5174                 QETH_CARD_TEXT(card, 2, "noskbmem");
5175         }
5176         card->stats.rx_dropped++;
5177         return NULL;
5178 }
5179 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5180
5181 static void qeth_unregister_dbf_views(void)
5182 {
5183         int x;
5184         for (x = 0; x < QETH_DBF_INFOS; x++) {
5185                 debug_unregister(qeth_dbf[x].id);
5186                 qeth_dbf[x].id = NULL;
5187         }
5188 }
5189
5190 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5191 {
5192         char dbf_txt_buf[32];
5193         va_list args;
5194
5195         if (!debug_level_enabled(id, level))
5196                 return;
5197         va_start(args, fmt);
5198         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5199         va_end(args);
5200         debug_text_event(id, level, dbf_txt_buf);
5201 }
5202 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5203
5204 static int qeth_register_dbf_views(void)
5205 {
5206         int ret;
5207         int x;
5208
5209         for (x = 0; x < QETH_DBF_INFOS; x++) {
5210                 /* register the areas */
5211                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5212                                                 qeth_dbf[x].pages,
5213                                                 qeth_dbf[x].areas,
5214                                                 qeth_dbf[x].len);
5215                 if (qeth_dbf[x].id == NULL) {
5216                         qeth_unregister_dbf_views();
5217                         return -ENOMEM;
5218                 }
5219
5220                 /* register a view */
5221                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5222                 if (ret) {
5223                         qeth_unregister_dbf_views();
5224                         return ret;
5225                 }
5226
5227                 /* set a passing level */
5228                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5229         }
5230
5231         return 0;
5232 }
5233
5234 int qeth_core_load_discipline(struct qeth_card *card,
5235                 enum qeth_discipline_id discipline)
5236 {
5237         int rc = 0;
5238         mutex_lock(&qeth_mod_mutex);
5239         switch (discipline) {
5240         case QETH_DISCIPLINE_LAYER3:
5241                 card->discipline = try_then_request_module(
5242                         symbol_get(qeth_l3_discipline), "qeth_l3");
5243                 break;
5244         case QETH_DISCIPLINE_LAYER2:
5245                 card->discipline = try_then_request_module(
5246                         symbol_get(qeth_l2_discipline), "qeth_l2");
5247                 break;
5248         }
5249         if (!card->discipline) {
5250                 dev_err(&card->gdev->dev, "There is no kernel module to "
5251                         "support discipline %d\n", discipline);
5252                 rc = -EINVAL;
5253         }
5254         mutex_unlock(&qeth_mod_mutex);
5255         return rc;
5256 }
5257
5258 void qeth_core_free_discipline(struct qeth_card *card)
5259 {
5260         if (card->options.layer2)
5261                 symbol_put(qeth_l2_discipline);
5262         else
5263                 symbol_put(qeth_l3_discipline);
5264         card->discipline = NULL;
5265 }
5266
5267 static const struct device_type qeth_generic_devtype = {
5268         .name = "qeth_generic",
5269         .groups = qeth_generic_attr_groups,
5270 };
5271 static const struct device_type qeth_osn_devtype = {
5272         .name = "qeth_osn",
5273         .groups = qeth_osn_attr_groups,
5274 };
5275
5276 #define DBF_NAME_LEN    20
5277
5278 struct qeth_dbf_entry {
5279         char dbf_name[DBF_NAME_LEN];
5280         debug_info_t *dbf_info;
5281         struct list_head dbf_list;
5282 };
5283
5284 static LIST_HEAD(qeth_dbf_list);
5285 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5286
5287 static debug_info_t *qeth_get_dbf_entry(char *name)
5288 {
5289         struct qeth_dbf_entry *entry;
5290         debug_info_t *rc = NULL;
5291
5292         mutex_lock(&qeth_dbf_list_mutex);
5293         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5294                 if (strcmp(entry->dbf_name, name) == 0) {
5295                         rc = entry->dbf_info;
5296                         break;
5297                 }
5298         }
5299         mutex_unlock(&qeth_dbf_list_mutex);
5300         return rc;
5301 }
5302
5303 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5304 {
5305         struct qeth_dbf_entry *new_entry;
5306
5307         card->debug = debug_register(name, 2, 1, 8);
5308         if (!card->debug) {
5309                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5310                 goto err;
5311         }
5312         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5313                 goto err_dbg;
5314         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5315         if (!new_entry)
5316                 goto err_dbg;
5317         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5318         new_entry->dbf_info = card->debug;
5319         mutex_lock(&qeth_dbf_list_mutex);
5320         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5321         mutex_unlock(&qeth_dbf_list_mutex);
5322
5323         return 0;
5324
5325 err_dbg:
5326         debug_unregister(card->debug);
5327 err:
5328         return -ENOMEM;
5329 }
5330
5331 static void qeth_clear_dbf_list(void)
5332 {
5333         struct qeth_dbf_entry *entry, *tmp;
5334
5335         mutex_lock(&qeth_dbf_list_mutex);
5336         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5337                 list_del(&entry->dbf_list);
5338                 debug_unregister(entry->dbf_info);
5339                 kfree(entry);
5340         }
5341         mutex_unlock(&qeth_dbf_list_mutex);
5342 }
5343
5344 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5345 {
5346         struct qeth_card *card;
5347         struct device *dev;
5348         int rc;
5349         unsigned long flags;
5350         char dbf_name[DBF_NAME_LEN];
5351
5352         QETH_DBF_TEXT(SETUP, 2, "probedev");
5353
5354         dev = &gdev->dev;
5355         if (!get_device(dev))
5356                 return -ENODEV;
5357
5358         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5359
5360         card = qeth_alloc_card();
5361         if (!card) {
5362                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5363                 rc = -ENOMEM;
5364                 goto err_dev;
5365         }
5366
5367         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5368                 dev_name(&gdev->dev));
5369         card->debug = qeth_get_dbf_entry(dbf_name);
5370         if (!card->debug) {
5371                 rc = qeth_add_dbf_entry(card, dbf_name);
5372                 if (rc)
5373                         goto err_card;
5374         }
5375
5376         card->read.ccwdev  = gdev->cdev[0];
5377         card->write.ccwdev = gdev->cdev[1];
5378         card->data.ccwdev  = gdev->cdev[2];
5379         dev_set_drvdata(&gdev->dev, card);
5380         card->gdev = gdev;
5381         gdev->cdev[0]->handler = qeth_irq;
5382         gdev->cdev[1]->handler = qeth_irq;
5383         gdev->cdev[2]->handler = qeth_irq;
5384
5385         rc = qeth_determine_card_type(card);
5386         if (rc) {
5387                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5388                 goto err_card;
5389         }
5390         rc = qeth_setup_card(card);
5391         if (rc) {
5392                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5393                 goto err_card;
5394         }
5395
5396         if (card->info.type == QETH_CARD_TYPE_OSN)
5397                 gdev->dev.type = &qeth_osn_devtype;
5398         else
5399                 gdev->dev.type = &qeth_generic_devtype;
5400
5401         switch (card->info.type) {
5402         case QETH_CARD_TYPE_OSN:
5403         case QETH_CARD_TYPE_OSM:
5404                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5405                 if (rc)
5406                         goto err_card;
5407                 rc = card->discipline->setup(card->gdev);
5408                 if (rc)
5409                         goto err_disc;
5410         case QETH_CARD_TYPE_OSD:
5411         case QETH_CARD_TYPE_OSX:
5412         default:
5413                 break;
5414         }
5415
5416         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5417         list_add_tail(&card->list, &qeth_core_card_list.list);
5418         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5419
5420         qeth_determine_capabilities(card);
5421         return 0;
5422
5423 err_disc:
5424         qeth_core_free_discipline(card);
5425 err_card:
5426         qeth_core_free_card(card);
5427 err_dev:
5428         put_device(dev);
5429         return rc;
5430 }
5431
5432 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5433 {
5434         unsigned long flags;
5435         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5436
5437         QETH_DBF_TEXT(SETUP, 2, "removedv");
5438
5439         if (card->discipline) {
5440                 card->discipline->remove(gdev);
5441                 qeth_core_free_discipline(card);
5442         }
5443
5444         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5445         list_del(&card->list);
5446         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5447         qeth_core_free_card(card);
5448         dev_set_drvdata(&gdev->dev, NULL);
5449         put_device(&gdev->dev);
5450         return;
5451 }
5452
5453 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5454 {
5455         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5456         int rc = 0;
5457         int def_discipline;
5458
5459         if (!card->discipline) {
5460                 if (card->info.type == QETH_CARD_TYPE_IQD)
5461                         def_discipline = QETH_DISCIPLINE_LAYER3;
5462                 else
5463                         def_discipline = QETH_DISCIPLINE_LAYER2;
5464                 rc = qeth_core_load_discipline(card, def_discipline);
5465                 if (rc)
5466                         goto err;
5467                 rc = card->discipline->setup(card->gdev);
5468                 if (rc)
5469                         goto err;
5470         }
5471         rc = card->discipline->set_online(gdev);
5472 err:
5473         return rc;
5474 }
5475
5476 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5477 {
5478         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5479         return card->discipline->set_offline(gdev);
5480 }
5481
5482 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5483 {
5484         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5485         if (card->discipline && card->discipline->shutdown)
5486                 card->discipline->shutdown(gdev);
5487 }
5488
5489 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5490 {
5491         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5492         if (card->discipline && card->discipline->prepare)
5493                 return card->discipline->prepare(gdev);
5494         return 0;
5495 }
5496
5497 static void qeth_core_complete(struct ccwgroup_device *gdev)
5498 {
5499         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5500         if (card->discipline && card->discipline->complete)
5501                 card->discipline->complete(gdev);
5502 }
5503
5504 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5505 {
5506         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5507         if (card->discipline && card->discipline->freeze)
5508                 return card->discipline->freeze(gdev);
5509         return 0;
5510 }
5511
5512 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5513 {
5514         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5515         if (card->discipline && card->discipline->thaw)
5516                 return card->discipline->thaw(gdev);
5517         return 0;
5518 }
5519
5520 static int qeth_core_restore(struct ccwgroup_device *gdev)
5521 {
5522         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5523         if (card->discipline && card->discipline->restore)
5524                 return card->discipline->restore(gdev);
5525         return 0;
5526 }
5527
5528 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5529         .driver = {
5530                 .owner = THIS_MODULE,
5531                 .name = "qeth",
5532         },
5533         .setup = qeth_core_probe_device,
5534         .remove = qeth_core_remove_device,
5535         .set_online = qeth_core_set_online,
5536         .set_offline = qeth_core_set_offline,
5537         .shutdown = qeth_core_shutdown,
5538         .prepare = qeth_core_prepare,
5539         .complete = qeth_core_complete,
5540         .freeze = qeth_core_freeze,
5541         .thaw = qeth_core_thaw,
5542         .restore = qeth_core_restore,
5543 };
5544
5545 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5546                                             const char *buf, size_t count)
5547 {
5548         int err;
5549
5550         err = ccwgroup_create_dev(qeth_core_root_dev,
5551                                   &qeth_core_ccwgroup_driver, 3, buf);
5552
5553         return err ? err : count;
5554 }
5555 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5556
5557 static struct attribute *qeth_drv_attrs[] = {
5558         &driver_attr_group.attr,
5559         NULL,
5560 };
5561 static struct attribute_group qeth_drv_attr_group = {
5562         .attrs = qeth_drv_attrs,
5563 };
5564 static const struct attribute_group *qeth_drv_attr_groups[] = {
5565         &qeth_drv_attr_group,
5566         NULL,
5567 };
5568
5569 static struct {
5570         const char str[ETH_GSTRING_LEN];
5571 } qeth_ethtool_stats_keys[] = {
5572 /*  0 */{"rx skbs"},
5573         {"rx buffers"},
5574         {"tx skbs"},
5575         {"tx buffers"},
5576         {"tx skbs no packing"},
5577         {"tx buffers no packing"},
5578         {"tx skbs packing"},
5579         {"tx buffers packing"},
5580         {"tx sg skbs"},
5581         {"tx sg frags"},
5582 /* 10 */{"rx sg skbs"},
5583         {"rx sg frags"},
5584         {"rx sg page allocs"},
5585         {"tx large kbytes"},
5586         {"tx large count"},
5587         {"tx pk state ch n->p"},
5588         {"tx pk state ch p->n"},
5589         {"tx pk watermark low"},
5590         {"tx pk watermark high"},
5591         {"queue 0 buffer usage"},
5592 /* 20 */{"queue 1 buffer usage"},
5593         {"queue 2 buffer usage"},
5594         {"queue 3 buffer usage"},
5595         {"rx poll time"},
5596         {"rx poll count"},
5597         {"rx do_QDIO time"},
5598         {"rx do_QDIO count"},
5599         {"tx handler time"},
5600         {"tx handler count"},
5601         {"tx time"},
5602 /* 30 */{"tx count"},
5603         {"tx do_QDIO time"},
5604         {"tx do_QDIO count"},
5605         {"tx csum"},
5606         {"tx lin"},
5607         {"cq handler count"},
5608         {"cq handler time"}
5609 };
5610
5611 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5612 {
5613         switch (stringset) {
5614         case ETH_SS_STATS:
5615                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5616         default:
5617                 return -EINVAL;
5618         }
5619 }
5620 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5621
5622 void qeth_core_get_ethtool_stats(struct net_device *dev,
5623                 struct ethtool_stats *stats, u64 *data)
5624 {
5625         struct qeth_card *card = dev->ml_priv;
5626         data[0] = card->stats.rx_packets -
5627                                 card->perf_stats.initial_rx_packets;
5628         data[1] = card->perf_stats.bufs_rec;
5629         data[2] = card->stats.tx_packets -
5630                                 card->perf_stats.initial_tx_packets;
5631         data[3] = card->perf_stats.bufs_sent;
5632         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5633                         - card->perf_stats.skbs_sent_pack;
5634         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5635         data[6] = card->perf_stats.skbs_sent_pack;
5636         data[7] = card->perf_stats.bufs_sent_pack;
5637         data[8] = card->perf_stats.sg_skbs_sent;
5638         data[9] = card->perf_stats.sg_frags_sent;
5639         data[10] = card->perf_stats.sg_skbs_rx;
5640         data[11] = card->perf_stats.sg_frags_rx;
5641         data[12] = card->perf_stats.sg_alloc_page_rx;
5642         data[13] = (card->perf_stats.large_send_bytes >> 10);
5643         data[14] = card->perf_stats.large_send_cnt;
5644         data[15] = card->perf_stats.sc_dp_p;
5645         data[16] = card->perf_stats.sc_p_dp;
5646         data[17] = QETH_LOW_WATERMARK_PACK;
5647         data[18] = QETH_HIGH_WATERMARK_PACK;
5648         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5649         data[20] = (card->qdio.no_out_queues > 1) ?
5650                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5651         data[21] = (card->qdio.no_out_queues > 2) ?
5652                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5653         data[22] = (card->qdio.no_out_queues > 3) ?
5654                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5655         data[23] = card->perf_stats.inbound_time;
5656         data[24] = card->perf_stats.inbound_cnt;
5657         data[25] = card->perf_stats.inbound_do_qdio_time;
5658         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5659         data[27] = card->perf_stats.outbound_handler_time;
5660         data[28] = card->perf_stats.outbound_handler_cnt;
5661         data[29] = card->perf_stats.outbound_time;
5662         data[30] = card->perf_stats.outbound_cnt;
5663         data[31] = card->perf_stats.outbound_do_qdio_time;
5664         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5665         data[33] = card->perf_stats.tx_csum;
5666         data[34] = card->perf_stats.tx_lin;
5667         data[35] = card->perf_stats.cq_cnt;
5668         data[36] = card->perf_stats.cq_time;
5669 }
5670 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5671
5672 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5673 {
5674         switch (stringset) {
5675         case ETH_SS_STATS:
5676                 memcpy(data, &qeth_ethtool_stats_keys,
5677                         sizeof(qeth_ethtool_stats_keys));
5678                 break;
5679         default:
5680                 WARN_ON(1);
5681                 break;
5682         }
5683 }
5684 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5685
5686 void qeth_core_get_drvinfo(struct net_device *dev,
5687                 struct ethtool_drvinfo *info)
5688 {
5689         struct qeth_card *card = dev->ml_priv;
5690
5691         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5692                 sizeof(info->driver));
5693         strlcpy(info->version, "1.0", sizeof(info->version));
5694         strlcpy(info->fw_version, card->info.mcl_level,
5695                 sizeof(info->fw_version));
5696         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5697                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5698 }
5699 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5700
5701 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5702 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5703 /* Always advertize and support all speeds up to specified, and only one     */
5704 /* specified port type.                                                      */
5705 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5706                                 int maxspeed, int porttype)
5707 {
5708         int port_sup, port_adv, spd_sup, spd_adv;
5709
5710         switch (porttype) {
5711         case PORT_TP:
5712                 port_sup = SUPPORTED_TP;
5713                 port_adv = ADVERTISED_TP;
5714                 break;
5715         case PORT_FIBRE:
5716                 port_sup = SUPPORTED_FIBRE;
5717                 port_adv = ADVERTISED_FIBRE;
5718                 break;
5719         default:
5720                 port_sup = SUPPORTED_TP;
5721                 port_adv = ADVERTISED_TP;
5722                 WARN_ON_ONCE(1);
5723         }
5724
5725         /* "Fallthrough" case'es ordered from high to low result in setting  */
5726         /* flags cumulatively, starting from the specified speed and down to */
5727         /* the lowest possible.                                              */
5728         spd_sup = 0;
5729         spd_adv = 0;
5730         switch (maxspeed) {
5731         case SPEED_10000:
5732                 spd_sup |= SUPPORTED_10000baseT_Full;
5733                 spd_adv |= ADVERTISED_10000baseT_Full;
5734         case SPEED_1000:
5735                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5736                 spd_adv |= ADVERTISED_1000baseT_Half |
5737                                                 ADVERTISED_1000baseT_Full;
5738         case SPEED_100:
5739                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5740                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5741         case SPEED_10:
5742                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5743                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5744         break;
5745         default:
5746                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5747                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5748                 WARN_ON_ONCE(1);
5749         }
5750         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5751         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5752 }
5753
5754 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5755                                         struct ethtool_cmd *ecmd)
5756 {
5757         struct qeth_card *card = netdev->ml_priv;
5758         enum qeth_link_types link_type;
5759         struct carrier_info carrier_info;
5760         u32 speed;
5761
5762         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5763                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5764         else
5765                 link_type = card->info.link_type;
5766
5767         ecmd->transceiver = XCVR_INTERNAL;
5768         ecmd->duplex = DUPLEX_FULL;
5769         ecmd->autoneg = AUTONEG_ENABLE;
5770
5771         switch (link_type) {
5772         case QETH_LINK_TYPE_FAST_ETH:
5773         case QETH_LINK_TYPE_LANE_ETH100:
5774                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5775                 speed = SPEED_100;
5776                 ecmd->port = PORT_TP;
5777                 break;
5778
5779         case QETH_LINK_TYPE_GBIT_ETH:
5780         case QETH_LINK_TYPE_LANE_ETH1000:
5781                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5782                 speed = SPEED_1000;
5783                 ecmd->port = PORT_FIBRE;
5784                 break;
5785
5786         case QETH_LINK_TYPE_10GBIT_ETH:
5787                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5788                 speed = SPEED_10000;
5789                 ecmd->port = PORT_FIBRE;
5790                 break;
5791
5792         default:
5793                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5794                 speed = SPEED_10;
5795                 ecmd->port = PORT_TP;
5796         }
5797         ethtool_cmd_speed_set(ecmd, speed);
5798
5799         /* Check if we can obtain more accurate information.     */
5800         /* If QUERY_CARD_INFO command is not supported or fails, */
5801         /* just return the heuristics that was filled above.     */
5802         if (qeth_query_card_info(card, &carrier_info) != 0)
5803                 return 0;
5804
5805         netdev_dbg(netdev,
5806         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5807                         carrier_info.card_type,
5808                         carrier_info.port_mode,
5809                         carrier_info.port_speed);
5810
5811         /* Update attributes for which we've obtained more authoritative */
5812         /* information, leave the rest the way they where filled above.  */
5813         switch (carrier_info.card_type) {
5814         case CARD_INFO_TYPE_1G_COPPER_A:
5815         case CARD_INFO_TYPE_1G_COPPER_B:
5816                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5817                 ecmd->port = PORT_TP;
5818                 break;
5819         case CARD_INFO_TYPE_1G_FIBRE_A:
5820         case CARD_INFO_TYPE_1G_FIBRE_B:
5821                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5822                 ecmd->port = PORT_FIBRE;
5823                 break;
5824         case CARD_INFO_TYPE_10G_FIBRE_A:
5825         case CARD_INFO_TYPE_10G_FIBRE_B:
5826                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5827                 ecmd->port = PORT_FIBRE;
5828                 break;
5829         }
5830
5831         switch (carrier_info.port_mode) {
5832         case CARD_INFO_PORTM_FULLDUPLEX:
5833                 ecmd->duplex = DUPLEX_FULL;
5834                 break;
5835         case CARD_INFO_PORTM_HALFDUPLEX:
5836                 ecmd->duplex = DUPLEX_HALF;
5837                 break;
5838         }
5839
5840         switch (carrier_info.port_speed) {
5841         case CARD_INFO_PORTS_10M:
5842                 speed = SPEED_10;
5843                 break;
5844         case CARD_INFO_PORTS_100M:
5845                 speed = SPEED_100;
5846                 break;
5847         case CARD_INFO_PORTS_1G:
5848                 speed = SPEED_1000;
5849                 break;
5850         case CARD_INFO_PORTS_10G:
5851                 speed = SPEED_10000;
5852                 break;
5853         }
5854         ethtool_cmd_speed_set(ecmd, speed);
5855
5856         return 0;
5857 }
5858 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5859
5860 static int __init qeth_core_init(void)
5861 {
5862         int rc;
5863
5864         pr_info("loading core functions\n");
5865         INIT_LIST_HEAD(&qeth_core_card_list.list);
5866         INIT_LIST_HEAD(&qeth_dbf_list);
5867         rwlock_init(&qeth_core_card_list.rwlock);
5868         mutex_init(&qeth_mod_mutex);
5869
5870         qeth_wq = create_singlethread_workqueue("qeth_wq");
5871
5872         rc = qeth_register_dbf_views();
5873         if (rc)
5874                 goto out_err;
5875         qeth_core_root_dev = root_device_register("qeth");
5876         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
5877         if (rc)
5878                 goto register_err;
5879         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5880                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5881         if (!qeth_core_header_cache) {
5882                 rc = -ENOMEM;
5883                 goto slab_err;
5884         }
5885         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5886                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5887         if (!qeth_qdio_outbuf_cache) {
5888                 rc = -ENOMEM;
5889                 goto cqslab_err;
5890         }
5891         rc = ccw_driver_register(&qeth_ccw_driver);
5892         if (rc)
5893                 goto ccw_err;
5894         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5895         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5896         if (rc)
5897                 goto ccwgroup_err;
5898
5899         return 0;
5900
5901 ccwgroup_err:
5902         ccw_driver_unregister(&qeth_ccw_driver);
5903 ccw_err:
5904         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5905 cqslab_err:
5906         kmem_cache_destroy(qeth_core_header_cache);
5907 slab_err:
5908         root_device_unregister(qeth_core_root_dev);
5909 register_err:
5910         qeth_unregister_dbf_views();
5911 out_err:
5912         pr_err("Initializing the qeth device driver failed\n");
5913         return rc;
5914 }
5915
5916 static void __exit qeth_core_exit(void)
5917 {
5918         qeth_clear_dbf_list();
5919         destroy_workqueue(qeth_wq);
5920         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5921         ccw_driver_unregister(&qeth_ccw_driver);
5922         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5923         kmem_cache_destroy(qeth_core_header_cache);
5924         root_device_unregister(qeth_core_root_dev);
5925         qeth_unregister_dbf_views();
5926         pr_info("core functions removed\n");
5927 }
5928
5929 module_init(qeth_core_init);
5930 module_exit(qeth_core_exit);
5931 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5932 MODULE_DESCRIPTION("qeth core functions");
5933 MODULE_LICENSE("GPL");