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 int qeth_card_hw_is_reachable(struct qeth_card *card)
  77 {
  78         return (card->state == CARD_STATE_SOFTSETUP) ||
  79                 (card->state == CARD_STATE_UP);
  80 }
  81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
  82
  83 static void qeth_close_dev_handler(struct work_struct *work)
  84 {
  85         struct qeth_card *card;
  86
  87         card = container_of(work, struct qeth_card, close_dev_work);
  88         QETH_CARD_TEXT(card, 2, "cldevhdl");
  89         rtnl_lock();
  90         dev_close(card->dev);
  91         rtnl_unlock();
  92         ccwgroup_set_offline(card->gdev);
  93 }
  94
  95 void qeth_close_dev(struct qeth_card *card)
  96 {
  97         QETH_CARD_TEXT(card, 2, "cldevsubm");
  98         queue_work(qeth_wq, &card->close_dev_work);
  99 }
 100 EXPORT_SYMBOL_GPL(qeth_close_dev);
 101
 102 static inline const char *qeth_get_cardname(struct qeth_card *card)
 103 {
 104         if (card->info.guestlan) {
 105                 switch (card->info.type) {
 106                 case QETH_CARD_TYPE_OSD:
 107                         return " Virtual NIC QDIO";
 108                 case QETH_CARD_TYPE_IQD:
 109                         return " Virtual NIC Hiper";
 110                 case QETH_CARD_TYPE_OSM:
 111                         return " Virtual NIC QDIO - OSM";
 112                 case QETH_CARD_TYPE_OSX:
 113                         return " Virtual NIC QDIO - OSX";
 114                 default:
 115                         return " unknown";
 116                 }
 117         } else {
 118                 switch (card->info.type) {
 119                 case QETH_CARD_TYPE_OSD:
 120                         return " OSD Express";
 121                 case QETH_CARD_TYPE_IQD:
 122                         return " HiperSockets";
 123                 case QETH_CARD_TYPE_OSN:
 124                         return " OSN QDIO";
 125                 case QETH_CARD_TYPE_OSM:
 126                         return " OSM QDIO";
 127                 case QETH_CARD_TYPE_OSX:
 128                         return " OSX QDIO";
 129                 default:
 130                         return " unknown";
 131                 }
 132         }
 133         return " n/a";
 134 }
 135
 136 /* max length to be returned: 14 */
 137 const char *qeth_get_cardname_short(struct qeth_card *card)
 138 {
 139         if (card->info.guestlan) {
 140                 switch (card->info.type) {
 141                 case QETH_CARD_TYPE_OSD:
 142                         return "Virt.NIC QDIO";
 143                 case QETH_CARD_TYPE_IQD:
 144                         return "Virt.NIC Hiper";
 145                 case QETH_CARD_TYPE_OSM:
 146                         return "Virt.NIC OSM";
 147                 case QETH_CARD_TYPE_OSX:
 148                         return "Virt.NIC OSX";
 149                 default:
 150                         return "unknown";
 151                 }
 152         } else {
 153                 switch (card->info.type) {
 154                 case QETH_CARD_TYPE_OSD:
 155                         switch (card->info.link_type) {
 156                         case QETH_LINK_TYPE_FAST_ETH:
 157                                 return "OSD_100";
 158                         case QETH_LINK_TYPE_HSTR:
 159                                 return "HSTR";
 160                         case QETH_LINK_TYPE_GBIT_ETH:
 161                                 return "OSD_1000";
 162                         case QETH_LINK_TYPE_10GBIT_ETH:
 163                                 return "OSD_10GIG";
 164                         case QETH_LINK_TYPE_LANE_ETH100:
 165                                 return "OSD_FE_LANE";
 166                         case QETH_LINK_TYPE_LANE_TR:
 167                                 return "OSD_TR_LANE";
 168                         case QETH_LINK_TYPE_LANE_ETH1000:
 169                                 return "OSD_GbE_LANE";
 170                         case QETH_LINK_TYPE_LANE:
 171                                 return "OSD_ATM_LANE";
 172                         default:
 173                                 return "OSD_Express";
 174                         }
 175                 case QETH_CARD_TYPE_IQD:
 176                         return "HiperSockets";
 177                 case QETH_CARD_TYPE_OSN:
 178                         return "OSN";
 179                 case QETH_CARD_TYPE_OSM:
 180                         return "OSM_1000";
 181                 case QETH_CARD_TYPE_OSX:
 182                         return "OSX_10GIG";
 183                 default:
 184                         return "unknown";
 185                 }
 186         }
 187         return "n/a";
 188 }
 189
 190 void qeth_set_recovery_task(struct qeth_card *card)
 191 {
 192         card->recovery_task = current;
 193 }
 194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 195
 196 void qeth_clear_recovery_task(struct qeth_card *card)
 197 {
 198         card->recovery_task = NULL;
 199 }
 200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 201
 202 static bool qeth_is_recovery_task(const struct qeth_card *card)
 203 {
 204         return card->recovery_task == current;
 205 }
 206
 207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 208                          int clear_start_mask)
 209 {
 210         unsigned long flags;
 211
 212         spin_lock_irqsave(&card->thread_mask_lock, flags);
 213         card->thread_allowed_mask = threads;
 214         if (clear_start_mask)
 215                 card->thread_start_mask &= threads;
 216         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 217         wake_up(&card->wait_q);
 218 }
 219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 220
 221 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 222 {
 223         unsigned long flags;
 224         int rc = 0;
 225
 226         spin_lock_irqsave(&card->thread_mask_lock, flags);
 227         rc = (card->thread_running_mask & threads);
 228         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 229         return rc;
 230 }
 231 EXPORT_SYMBOL_GPL(qeth_threads_running);
 232
 233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 234 {
 235         if (qeth_is_recovery_task(card))
 236                 return 0;
 237         return wait_event_interruptible(card->wait_q,
 238                         qeth_threads_running(card, threads) == 0);
 239 }
 240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 241
 242 void qeth_clear_working_pool_list(struct qeth_card *card)
 243 {
 244         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 245
 246         QETH_CARD_TEXT(card, 5, "clwrklst");
 247         list_for_each_entry_safe(pool_entry, tmp,
 248                             &card->qdio.in_buf_pool.entry_list, list){
 249                         list_del(&pool_entry->list);
 250         }
 251 }
 252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 253
 254 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 255 {
 256         struct qeth_buffer_pool_entry *pool_entry;
 257         void *ptr;
 258         int i, j;
 259
 260         QETH_CARD_TEXT(card, 5, "alocpool");
 261         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 262                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 263                 if (!pool_entry) {
 264                         qeth_free_buffer_pool(card);
 265                         return -ENOMEM;
 266                 }
 267                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 268                         ptr = (void *) __get_free_page(GFP_KERNEL);
 269                         if (!ptr) {
 270                                 while (j > 0)
 271                                         free_page((unsigned long)
 272                                                   pool_entry->elements[--j]);
 273                                 kfree(pool_entry);
 274                                 qeth_free_buffer_pool(card);
 275                                 return -ENOMEM;
 276                         }
 277                         pool_entry->elements[j] = ptr;
 278                 }
 279                 list_add(&pool_entry->init_list,
 280                          &card->qdio.init_pool.entry_list);
 281         }
 282         return 0;
 283 }
 284
 285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 286 {
 287         QETH_CARD_TEXT(card, 2, "realcbp");
 288
 289         if ((card->state != CARD_STATE_DOWN) &&
 290             (card->state != CARD_STATE_RECOVER))
 291                 return -EPERM;
 292
 293         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 294         qeth_clear_working_pool_list(card);
 295         qeth_free_buffer_pool(card);
 296         card->qdio.in_buf_pool.buf_count = bufcnt;
 297         card->qdio.init_pool.buf_count = bufcnt;
 298         return qeth_alloc_buffer_pool(card);
 299 }
 300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 301
 302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 303 {
 304         if (!q)
 305                 return;
 306
 307         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 308         kfree(q);
 309 }
 310
 311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 312 {
 313         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 314         int i;
 315
 316         if (!q)
 317                 return NULL;
 318
 319         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 320                 kfree(q);
 321                 return NULL;
 322         }
 323
 324         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 325                 q->bufs[i].buffer = q->qdio_bufs[i];
 326
 327         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 328         return q;
 329 }
 330
 331 static inline int qeth_cq_init(struct qeth_card *card)
 332 {
 333         int rc;
 334
 335         if (card->options.cq == QETH_CQ_ENABLED) {
 336                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 337                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 338                                    QDIO_MAX_BUFFERS_PER_Q);
 339                 card->qdio.c_q->next_buf_to_init = 127;
 340                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 341                              card->qdio.no_in_queues - 1, 0,
 342                              127);
 343                 if (rc) {
 344                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 345                         goto out;
 346                 }
 347         }
 348         rc = 0;
 349 out:
 350         return rc;
 351 }
 352
 353 static inline int qeth_alloc_cq(struct qeth_card *card)
 354 {
 355         int rc;
 356
 357         if (card->options.cq == QETH_CQ_ENABLED) {
 358                 int i;
 359                 struct qdio_outbuf_state *outbuf_states;
 360
 361                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 362                 card->qdio.c_q = qeth_alloc_qdio_queue();
 363                 if (!card->qdio.c_q) {
 364                         rc = -1;
 365                         goto kmsg_out;
 366                 }
 367                 card->qdio.no_in_queues = 2;
 368                 card->qdio.out_bufstates =
 369                         kzalloc(card->qdio.no_out_queues *
 370                                 QDIO_MAX_BUFFERS_PER_Q *
 371                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 372                 outbuf_states = card->qdio.out_bufstates;
 373                 if (outbuf_states == NULL) {
 374                         rc = -1;
 375                         goto free_cq_out;
 376                 }
 377                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 378                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 379                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 380                 }
 381         } else {
 382                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 383                 card->qdio.c_q = NULL;
 384                 card->qdio.no_in_queues = 1;
 385         }
 386         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 387         rc = 0;
 388 out:
 389         return rc;
 390 free_cq_out:
 391         qeth_free_qdio_queue(card->qdio.c_q);
 392         card->qdio.c_q = NULL;
 393 kmsg_out:
 394         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 395         goto out;
 396 }
 397
 398 static inline void qeth_free_cq(struct qeth_card *card)
 399 {
 400         if (card->qdio.c_q) {
 401                 --card->qdio.no_in_queues;
 402                 qeth_free_qdio_queue(card->qdio.c_q);
 403                 card->qdio.c_q = NULL;
 404         }
 405         kfree(card->qdio.out_bufstates);
 406         card->qdio.out_bufstates = NULL;
 407 }
 408
 409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 410         int delayed) {
 411         enum iucv_tx_notify n;
 412
 413         switch (sbalf15) {
 414         case 0:
 415                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 416                 break;
 417         case 4:
 418         case 16:
 419         case 17:
 420         case 18:
 421                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 422                         TX_NOTIFY_UNREACHABLE;
 423                 break;
 424         default:
 425                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 426                         TX_NOTIFY_GENERALERROR;
 427                 break;
 428         }
 429
 430         return n;
 431 }
 432
 433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 434         int bidx, int forced_cleanup)
 435 {
 436         if (q->card->options.cq != QETH_CQ_ENABLED)
 437                 return;
 438
 439         if (q->bufs[bidx]->next_pending != NULL) {
 440                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 441                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 442
 443                 while (c) {
 444                         if (forced_cleanup ||
 445                             atomic_read(&c->state) ==
 446                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 447                                 struct qeth_qdio_out_buffer *f = c;
 448                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 449                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 450                                 /* release here to avoid interleaving between
 451                                    outbound tasklet and inbound tasklet
 452                                    regarding notifications and lifecycle */
 453                                 qeth_release_skbs(c);
 454
 455                                 c = f->next_pending;
 456                                 WARN_ON_ONCE(head->next_pending != f);
 457                                 head->next_pending = c;
 458                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 459                         } else {
 460                                 head = c;
 461                                 c = c->next_pending;
 462                         }
 463
 464                 }
 465         }
 466         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 467                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 468                 /* for recovery situations */
 469                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 470                 qeth_init_qdio_out_buf(q, bidx);
 471                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 472         }
 473 }
 474
 475
 476 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 477                 unsigned long phys_aob_addr) {
 478         struct qaob *aob;
 479         struct qeth_qdio_out_buffer *buffer;
 480         enum iucv_tx_notify notification;
 481
 482         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 483         QETH_CARD_TEXT(card, 5, "haob");
 484         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 485         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 486         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 487
 488         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 489                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 490                 notification = TX_NOTIFY_OK;
 491         } else {
 492                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 493                                                         QETH_QDIO_BUF_PENDING);
 494                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 495                 notification = TX_NOTIFY_DELAYED_OK;
 496         }
 497
 498         if (aob->aorc != 0)  {
 499                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 500                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 501         }
 502         qeth_notify_skbs(buffer->q, buffer, notification);
 503
 504         buffer->aob = NULL;
 505         qeth_clear_output_buffer(buffer->q, buffer,
 506                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 507
 508         /* from here on: do not touch buffer anymore */
 509         qdio_release_aob(aob);
 510 }
 511
 512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 513 {
 514         return card->options.cq == QETH_CQ_ENABLED &&
 515             card->qdio.c_q != NULL &&
 516             queue != 0 &&
 517             queue == card->qdio.no_in_queues - 1;
 518 }
 519
 520
 521 static int qeth_issue_next_read(struct qeth_card *card)
 522 {
 523         int rc;
 524         struct qeth_cmd_buffer *iob;
 525
 526         QETH_CARD_TEXT(card, 5, "issnxrd");
 527         if (card->read.state != CH_STATE_UP)
 528                 return -EIO;
 529         iob = qeth_get_buffer(&card->read);
 530         if (!iob) {
 531                 dev_warn(&card->gdev->dev, "The qeth device driver "
 532                         "failed to recover an error on the device\n");
 533                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 534                         "available\n", dev_name(&card->gdev->dev));
 535                 return -ENOMEM;
 536         }
 537         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 538         QETH_CARD_TEXT(card, 6, "noirqpnd");
 539         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 540                               (addr_t) iob, 0, 0);
 541         if (rc) {
 542                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 543                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 544                 atomic_set(&card->read.irq_pending, 0);
 545                 card->read_or_write_problem = 1;
 546                 qeth_schedule_recovery(card);
 547                 wake_up(&card->wait_q);
 548         }
 549         return rc;
 550 }
 551
 552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 553 {
 554         struct qeth_reply *reply;
 555
 556         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 557         if (reply) {
 558                 atomic_set(&reply->refcnt, 1);
 559                 atomic_set(&reply->received, 0);
 560                 reply->card = card;
 561         }
 562         return reply;
 563 }
 564
 565 static void qeth_get_reply(struct qeth_reply *reply)
 566 {
 567         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 568         atomic_inc(&reply->refcnt);
 569 }
 570
 571 static void qeth_put_reply(struct qeth_reply *reply)
 572 {
 573         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 574         if (atomic_dec_and_test(&reply->refcnt))
 575                 kfree(reply);
 576 }
 577
 578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 579                 struct qeth_card *card)
 580 {
 581         char *ipa_name;
 582         int com = cmd->hdr.command;
 583         ipa_name = qeth_get_ipa_cmd_name(com);
 584         if (rc)
 585                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 586                                 "x%X \"%s\"\n",
 587                                 ipa_name, com, dev_name(&card->gdev->dev),
 588                                 QETH_CARD_IFNAME(card), rc,
 589                                 qeth_get_ipa_msg(rc));
 590         else
 591                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 592                                 ipa_name, com, dev_name(&card->gdev->dev),
 593                                 QETH_CARD_IFNAME(card));
 594 }
 595
 596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 597                 struct qeth_cmd_buffer *iob)
 598 {
 599         struct qeth_ipa_cmd *cmd = NULL;
 600
 601         QETH_CARD_TEXT(card, 5, "chkipad");
 602         if (IS_IPA(iob->data)) {
 603                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 604                 if (IS_IPA_REPLY(cmd)) {
 605                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 606                             cmd->hdr.command != IPA_CMD_DELCCID &&
 607                             cmd->hdr.command != IPA_CMD_MODCCID &&
 608                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 609                                 qeth_issue_ipa_msg(cmd,
 610                                                 cmd->hdr.return_code, card);
 611                         return cmd;
 612                 } else {
 613                         switch (cmd->hdr.command) {
 614                         case IPA_CMD_STOPLAN:
 615                                 if (cmd->hdr.return_code ==
 616                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 617                                         dev_err(&card->gdev->dev,
 618                                            "Interface %s is down because the "
 619                                            "adjacent port is no longer in "
 620                                            "reflective relay mode\n",
 621                                            QETH_CARD_IFNAME(card));
 622                                         qeth_close_dev(card);
 623                                 } else {
 624                                         dev_warn(&card->gdev->dev,
 625                                            "The link for interface %s on CHPID"
 626                                            " 0x%X failed\n",
 627                                            QETH_CARD_IFNAME(card),
 628                                            card->info.chpid);
 629                                         qeth_issue_ipa_msg(cmd,
 630                                                 cmd->hdr.return_code, card);
 631                                 }
 632                                 card->lan_online = 0;
 633                                 if (card->dev && netif_carrier_ok(card->dev))
 634                                         netif_carrier_off(card->dev);
 635                                 return NULL;
 636                         case IPA_CMD_STARTLAN:
 637                                 dev_info(&card->gdev->dev,
 638                                            "The link for %s on CHPID 0x%X has"
 639                                            " been restored\n",
 640                                            QETH_CARD_IFNAME(card),
 641                                            card->info.chpid);
 642                                 netif_carrier_on(card->dev);
 643                                 card->lan_online = 1;
 644                                 if (card->info.hwtrap)
 645                                         card->info.hwtrap = 2;
 646                                 qeth_schedule_recovery(card);
 647                                 return NULL;
 648                         case IPA_CMD_SETBRIDGEPORT:
 649                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 650                                 if (card->discipline->control_event_handler
 651                                                                 (card, cmd))
 652                                         return cmd;
 653                                 else
 654                                         return NULL;
 655                         case IPA_CMD_MODCCID:
 656                                 return cmd;
 657                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 658                                 QETH_CARD_TEXT(card, 3, "irla");
 659                                 break;
 660                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 661                                 QETH_CARD_TEXT(card, 3, "urla");
 662                                 break;
 663                         default:
 664                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 665                                            "but not a reply!\n");
 666                                 break;
 667                         }
 668                 }
 669         }
 670         return cmd;
 671 }
 672
 673 void qeth_clear_ipacmd_list(struct qeth_card *card)
 674 {
 675         struct qeth_reply *reply, *r;
 676         unsigned long flags;
 677
 678         QETH_CARD_TEXT(card, 4, "clipalst");
 679
 680         spin_lock_irqsave(&card->lock, flags);
 681         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 682                 qeth_get_reply(reply);
 683                 reply->rc = -EIO;
 684                 atomic_inc(&reply->received);
 685                 list_del_init(&reply->list);
 686                 wake_up(&reply->wait_q);
 687                 qeth_put_reply(reply);
 688         }
 689         spin_unlock_irqrestore(&card->lock, flags);
 690         atomic_set(&card->write.irq_pending, 0);
 691 }
 692 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 693
 694 static int qeth_check_idx_response(struct qeth_card *card,
 695         unsigned char *buffer)
 696 {
 697         if (!buffer)
 698                 return 0;
 699
 700         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 701         if ((buffer[2] & 0xc0) == 0xc0) {
 702                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 703                            "with cause code 0x%02x%s\n",
 704                            buffer[4],
 705                            ((buffer[4] == 0x22) ?
 706                             " -- try another portname" : ""));
 707                 QETH_CARD_TEXT(card, 2, "ckidxres");
 708                 QETH_CARD_TEXT(card, 2, " idxterm");
 709                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 710                 if (buffer[4] == 0xf6) {
 711                         dev_err(&card->gdev->dev,
 712                         "The qeth device is not configured "
 713                         "for the OSI layer required by z/VM\n");
 714                         return -EPERM;
 715                 }
 716                 return -EIO;
 717         }
 718         return 0;
 719 }
 720
 721 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 722 {
 723         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 724                 dev_get_drvdata(&cdev->dev))->dev);
 725         return card;
 726 }
 727
 728 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 729                 __u32 len)
 730 {
 731         struct qeth_card *card;
 732
 733         card = CARD_FROM_CDEV(channel->ccwdev);
 734         QETH_CARD_TEXT(card, 4, "setupccw");
 735         if (channel == &card->read)
 736                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 737         else
 738                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 739         channel->ccw.count = len;
 740         channel->ccw.cda = (__u32) __pa(iob);
 741 }
 742
 743 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 744 {
 745         __u8 index;
 746
 747         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 748         index = channel->io_buf_no;
 749         do {
 750                 if (channel->iob[index].state == BUF_STATE_FREE) {
 751                         channel->iob[index].state = BUF_STATE_LOCKED;
 752                         channel->io_buf_no = (channel->io_buf_no + 1) %
 753                                 QETH_CMD_BUFFER_NO;
 754                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 755                         return channel->iob + index;
 756                 }
 757                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 758         } while (index != channel->io_buf_no);
 759
 760         return NULL;
 761 }
 762
 763 void qeth_release_buffer(struct qeth_channel *channel,
 764                 struct qeth_cmd_buffer *iob)
 765 {
 766         unsigned long flags;
 767
 768         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 769         spin_lock_irqsave(&channel->iob_lock, flags);
 770         memset(iob->data, 0, QETH_BUFSIZE);
 771         iob->state = BUF_STATE_FREE;
 772         iob->callback = qeth_send_control_data_cb;
 773         iob->rc = 0;
 774         spin_unlock_irqrestore(&channel->iob_lock, flags);
 775         wake_up(&channel->wait_q);
 776 }
 777 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 778
 779 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 780 {
 781         struct qeth_cmd_buffer *buffer = NULL;
 782         unsigned long flags;
 783
 784         spin_lock_irqsave(&channel->iob_lock, flags);
 785         buffer = __qeth_get_buffer(channel);
 786         spin_unlock_irqrestore(&channel->iob_lock, flags);
 787         return buffer;
 788 }
 789
 790 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 791 {
 792         struct qeth_cmd_buffer *buffer;
 793         wait_event(channel->wait_q,
 794                    ((buffer = qeth_get_buffer(channel)) != NULL));
 795         return buffer;
 796 }
 797 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 798
 799 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 800 {
 801         int cnt;
 802
 803         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 804                 qeth_release_buffer(channel, &channel->iob[cnt]);
 805         channel->buf_no = 0;
 806         channel->io_buf_no = 0;
 807 }
 808 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 809
 810 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 811                   struct qeth_cmd_buffer *iob)
 812 {
 813         struct qeth_card *card;
 814         struct qeth_reply *reply, *r;
 815         struct qeth_ipa_cmd *cmd;
 816         unsigned long flags;
 817         int keep_reply;
 818         int rc = 0;
 819
 820         card = CARD_FROM_CDEV(channel->ccwdev);
 821         QETH_CARD_TEXT(card, 4, "sndctlcb");
 822         rc = qeth_check_idx_response(card, iob->data);
 823         switch (rc) {
 824         case 0:
 825                 break;
 826         case -EIO:
 827                 qeth_clear_ipacmd_list(card);
 828                 qeth_schedule_recovery(card);
 829                 /* fall through */
 830         default:
 831                 goto out;
 832         }
 833
 834         cmd = qeth_check_ipa_data(card, iob);
 835         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 836                 goto out;
 837         /*in case of OSN : check if cmd is set */
 838         if (card->info.type == QETH_CARD_TYPE_OSN &&
 839             cmd &&
 840             cmd->hdr.command != IPA_CMD_STARTLAN &&
 841             card->osn_info.assist_cb != NULL) {
 842                 card->osn_info.assist_cb(card->dev, cmd);
 843                 goto out;
 844         }
 845
 846         spin_lock_irqsave(&card->lock, flags);
 847         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 848                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 849                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 850                         qeth_get_reply(reply);
 851                         list_del_init(&reply->list);
 852                         spin_unlock_irqrestore(&card->lock, flags);
 853                         keep_reply = 0;
 854                         if (reply->callback != NULL) {
 855                                 if (cmd) {
 856                                         reply->offset = (__u16)((char *)cmd -
 857                                                         (char *)iob->data);
 858                                         keep_reply = reply->callback(card,
 859                                                         reply,
 860                                                         (unsigned long)cmd);
 861                                 } else
 862                                         keep_reply = reply->callback(card,
 863                                                         reply,
 864                                                         (unsigned long)iob);
 865                         }
 866                         if (cmd)
 867                                 reply->rc = (u16) cmd->hdr.return_code;
 868                         else if (iob->rc)
 869                                 reply->rc = iob->rc;
 870                         if (keep_reply) {
 871                                 spin_lock_irqsave(&card->lock, flags);
 872                                 list_add_tail(&reply->list,
 873                                               &card->cmd_waiter_list);
 874                                 spin_unlock_irqrestore(&card->lock, flags);
 875                         } else {
 876                                 atomic_inc(&reply->received);
 877                                 wake_up(&reply->wait_q);
 878                         }
 879                         qeth_put_reply(reply);
 880                         goto out;
 881                 }
 882         }
 883         spin_unlock_irqrestore(&card->lock, flags);
 884 out:
 885         memcpy(&card->seqno.pdu_hdr_ack,
 886                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 887                 QETH_SEQ_NO_LENGTH);
 888         qeth_release_buffer(channel, iob);
 889 }
 890
 891 static int qeth_setup_channel(struct qeth_channel *channel)
 892 {
 893         int cnt;
 894
 895         QETH_DBF_TEXT(SETUP, 2, "setupch");
 896         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 897                 channel->iob[cnt].data =
 898                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 899                 if (channel->iob[cnt].data == NULL)
 900                         break;
 901                 channel->iob[cnt].state = BUF_STATE_FREE;
 902                 channel->iob[cnt].channel = channel;
 903                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 904                 channel->iob[cnt].rc = 0;
 905         }
 906         if (cnt < QETH_CMD_BUFFER_NO) {
 907                 while (cnt-- > 0)
 908                         kfree(channel->iob[cnt].data);
 909                 return -ENOMEM;
 910         }
 911         channel->buf_no = 0;
 912         channel->io_buf_no = 0;
 913         atomic_set(&channel->irq_pending, 0);
 914         spin_lock_init(&channel->iob_lock);
 915
 916         init_waitqueue_head(&channel->wait_q);
 917         return 0;
 918 }
 919
 920 static int qeth_set_thread_start_bit(struct qeth_card *card,
 921                 unsigned long thread)
 922 {
 923         unsigned long flags;
 924
 925         spin_lock_irqsave(&card->thread_mask_lock, flags);
 926         if (!(card->thread_allowed_mask & thread) ||
 927               (card->thread_start_mask & thread)) {
 928                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 929                 return -EPERM;
 930         }
 931         card->thread_start_mask |= thread;
 932         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 933         return 0;
 934 }
 935
 936 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 937 {
 938         unsigned long flags;
 939
 940         spin_lock_irqsave(&card->thread_mask_lock, flags);
 941         card->thread_start_mask &= ~thread;
 942         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 943         wake_up(&card->wait_q);
 944 }
 945 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 946
 947 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 948 {
 949         unsigned long flags;
 950
 951         spin_lock_irqsave(&card->thread_mask_lock, flags);
 952         card->thread_running_mask &= ~thread;
 953         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 954         wake_up(&card->wait_q);
 955 }
 956 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 957
 958 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 959 {
 960         unsigned long flags;
 961         int rc = 0;
 962
 963         spin_lock_irqsave(&card->thread_mask_lock, flags);
 964         if (card->thread_start_mask & thread) {
 965                 if ((card->thread_allowed_mask & thread) &&
 966                     !(card->thread_running_mask & thread)) {
 967                         rc = 1;
 968                         card->thread_start_mask &= ~thread;
 969                         card->thread_running_mask |= thread;
 970                 } else
 971                         rc = -EPERM;
 972         }
 973         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 974         return rc;
 975 }
 976
 977 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 978 {
 979         int rc = 0;
 980
 981         wait_event(card->wait_q,
 982                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 983         return rc;
 984 }
 985 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 986
 987 void qeth_schedule_recovery(struct qeth_card *card)
 988 {
 989         QETH_CARD_TEXT(card, 2, "startrec");
 990         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 991                 schedule_work(&card->kernel_thread_starter);
 992 }
 993 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 994
 995 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 996 {
 997         int dstat, cstat;
 998         char *sense;
 999         struct qeth_card *card;
1000
1001         sense = (char *) irb->ecw;
1002         cstat = irb->scsw.cmd.cstat;
1003         dstat = irb->scsw.cmd.dstat;
1004         card = CARD_FROM_CDEV(cdev);
1005
1006         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1007                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1008                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1009                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1010                 dev_warn(&cdev->dev, "The qeth device driver "
1011                         "failed to recover an error on the device\n");
1012                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1013                         dev_name(&cdev->dev), dstat, cstat);
1014                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1015                                 16, 1, irb, 64, 1);
1016                 return 1;
1017         }
1018
1019         if (dstat & DEV_STAT_UNIT_CHECK) {
1020                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1021                     SENSE_RESETTING_EVENT_FLAG) {
1022                         QETH_CARD_TEXT(card, 2, "REVIND");
1023                         return 1;
1024                 }
1025                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1026                     SENSE_COMMAND_REJECT_FLAG) {
1027                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1028                         return 1;
1029                 }
1030                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1031                         QETH_CARD_TEXT(card, 2, "AFFE");
1032                         return 1;
1033                 }
1034                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1035                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1036                         return 0;
1037                 }
1038                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1039                         return 1;
1040         }
1041         return 0;
1042 }
1043
1044 static long __qeth_check_irb_error(struct ccw_device *cdev,
1045                 unsigned long intparm, struct irb *irb)
1046 {
1047         struct qeth_card *card;
1048
1049         card = CARD_FROM_CDEV(cdev);
1050
1051         if (!card || !IS_ERR(irb))
1052                 return 0;
1053
1054         switch (PTR_ERR(irb)) {
1055         case -EIO:
1056                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1057                         dev_name(&cdev->dev));
1058                 QETH_CARD_TEXT(card, 2, "ckirberr");
1059                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1060                 break;
1061         case -ETIMEDOUT:
1062                 dev_warn(&cdev->dev, "A hardware operation timed out"
1063                         " on the device\n");
1064                 QETH_CARD_TEXT(card, 2, "ckirberr");
1065                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1066                 if (intparm == QETH_RCD_PARM) {
1067                         if (card->data.ccwdev == cdev) {
1068                                 card->data.state = CH_STATE_DOWN;
1069                                 wake_up(&card->wait_q);
1070                         }
1071                 }
1072                 break;
1073         default:
1074                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1075                         dev_name(&cdev->dev), PTR_ERR(irb));
1076                 QETH_CARD_TEXT(card, 2, "ckirberr");
1077                 QETH_CARD_TEXT(card, 2, "  rc???");
1078         }
1079         return PTR_ERR(irb);
1080 }
1081
1082 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1083                 struct irb *irb)
1084 {
1085         int rc;
1086         int cstat, dstat;
1087         struct qeth_cmd_buffer *buffer;
1088         struct qeth_channel *channel;
1089         struct qeth_card *card;
1090         struct qeth_cmd_buffer *iob;
1091         __u8 index;
1092
1093         if (__qeth_check_irb_error(cdev, intparm, irb))
1094                 return;
1095         cstat = irb->scsw.cmd.cstat;
1096         dstat = irb->scsw.cmd.dstat;
1097
1098         card = CARD_FROM_CDEV(cdev);
1099         if (!card)
1100                 return;
1101
1102         QETH_CARD_TEXT(card, 5, "irq");
1103
1104         if (card->read.ccwdev == cdev) {
1105                 channel = &card->read;
1106                 QETH_CARD_TEXT(card, 5, "read");
1107         } else if (card->write.ccwdev == cdev) {
1108                 channel = &card->write;
1109                 QETH_CARD_TEXT(card, 5, "write");
1110         } else {
1111                 channel = &card->data;
1112                 QETH_CARD_TEXT(card, 5, "data");
1113         }
1114         atomic_set(&channel->irq_pending, 0);
1115
1116         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1117                 channel->state = CH_STATE_STOPPED;
1118
1119         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1120                 channel->state = CH_STATE_HALTED;
1121
1122         /*let's wake up immediately on data channel*/
1123         if ((channel == &card->data) && (intparm != 0) &&
1124             (intparm != QETH_RCD_PARM))
1125                 goto out;
1126
1127         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1128                 QETH_CARD_TEXT(card, 6, "clrchpar");
1129                 /* we don't have to handle this further */
1130                 intparm = 0;
1131         }
1132         if (intparm == QETH_HALT_CHANNEL_PARM) {
1133                 QETH_CARD_TEXT(card, 6, "hltchpar");
1134                 /* we don't have to handle this further */
1135                 intparm = 0;
1136         }
1137         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1138             (dstat & DEV_STAT_UNIT_CHECK) ||
1139             (cstat)) {
1140                 if (irb->esw.esw0.erw.cons) {
1141                         dev_warn(&channel->ccwdev->dev,
1142                                 "The qeth device driver failed to recover "
1143                                 "an error on the device\n");
1144                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1145                                 "0x%X dstat 0x%X\n",
1146                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1147                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1148                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1149                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1150                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1151                 }
1152                 if (intparm == QETH_RCD_PARM) {
1153                         channel->state = CH_STATE_DOWN;
1154                         goto out;
1155                 }
1156                 rc = qeth_get_problem(cdev, irb);
1157                 if (rc) {
1158                         qeth_clear_ipacmd_list(card);
1159                         qeth_schedule_recovery(card);
1160                         goto out;
1161                 }
1162         }
1163
1164         if (intparm == QETH_RCD_PARM) {
1165                 channel->state = CH_STATE_RCD_DONE;
1166                 goto out;
1167         }
1168         if (intparm) {
1169                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1170                 buffer->state = BUF_STATE_PROCESSED;
1171         }
1172         if (channel == &card->data)
1173                 return;
1174         if (channel == &card->read &&
1175             channel->state == CH_STATE_UP)
1176                 qeth_issue_next_read(card);
1177
1178         iob = channel->iob;
1179         index = channel->buf_no;
1180         while (iob[index].state == BUF_STATE_PROCESSED) {
1181                 if (iob[index].callback != NULL)
1182                         iob[index].callback(channel, iob + index);
1183
1184                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1185         }
1186         channel->buf_no = index;
1187 out:
1188         wake_up(&card->wait_q);
1189         return;
1190 }
1191
1192 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1193                 struct qeth_qdio_out_buffer *buf,
1194                 enum iucv_tx_notify notification)
1195 {
1196         struct sk_buff *skb;
1197
1198         if (skb_queue_empty(&buf->skb_list))
1199                 goto out;
1200         skb = skb_peek(&buf->skb_list);
1201         while (skb) {
1202                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1203                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1204                 if (skb->protocol == ETH_P_AF_IUCV) {
1205                         if (skb->sk) {
1206                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1207                                 iucv->sk_txnotify(skb, notification);
1208                         }
1209                 }
1210                 if (skb_queue_is_last(&buf->skb_list, skb))
1211                         skb = NULL;
1212                 else
1213                         skb = skb_queue_next(&buf->skb_list, skb);
1214         }
1215 out:
1216         return;
1217 }
1218
1219 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1220 {
1221         struct sk_buff *skb;
1222         struct iucv_sock *iucv;
1223         int notify_general_error = 0;
1224
1225         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1226                 notify_general_error = 1;
1227
1228         /* release may never happen from within CQ tasklet scope */
1229         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1230
1231         skb = skb_dequeue(&buf->skb_list);
1232         while (skb) {
1233                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1234                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1235                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1236                         if (skb->sk) {
1237                                 iucv = iucv_sk(skb->sk);
1238                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1239                         }
1240                 }
1241                 atomic_dec(&skb->users);
1242                 dev_kfree_skb_any(skb);
1243                 skb = skb_dequeue(&buf->skb_list);
1244         }
1245 }
1246
1247 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1248                 struct qeth_qdio_out_buffer *buf,
1249                 enum qeth_qdio_buffer_states newbufstate)
1250 {
1251         int i;
1252
1253         /* is PCI flag set on buffer? */
1254         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1255                 atomic_dec(&queue->set_pci_flags_count);
1256
1257         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1258                 qeth_release_skbs(buf);
1259         }
1260         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1261                 if (buf->buffer->element[i].addr && buf->is_header[i])
1262                         kmem_cache_free(qeth_core_header_cache,
1263                                 buf->buffer->element[i].addr);
1264                 buf->is_header[i] = 0;
1265                 buf->buffer->element[i].length = 0;
1266                 buf->buffer->element[i].addr = NULL;
1267                 buf->buffer->element[i].eflags = 0;
1268                 buf->buffer->element[i].sflags = 0;
1269         }
1270         buf->buffer->element[15].eflags = 0;
1271         buf->buffer->element[15].sflags = 0;
1272         buf->next_element_to_fill = 0;
1273         atomic_set(&buf->state, newbufstate);
1274 }
1275
1276 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1277 {
1278         int j;
1279
1280         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1281                 if (!q->bufs[j])
1282                         continue;
1283                 qeth_cleanup_handled_pending(q, j, 1);
1284                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1285                 if (free) {
1286                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1287                         q->bufs[j] = NULL;
1288                 }
1289         }
1290 }
1291
1292 void qeth_clear_qdio_buffers(struct qeth_card *card)
1293 {
1294         int i;
1295
1296         QETH_CARD_TEXT(card, 2, "clearqdbf");
1297         /* clear outbound buffers to free skbs */
1298         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1299                 if (card->qdio.out_qs[i]) {
1300                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1301                 }
1302         }
1303 }
1304 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1305
1306 static void qeth_free_buffer_pool(struct qeth_card *card)
1307 {
1308         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1309         int i = 0;
1310         list_for_each_entry_safe(pool_entry, tmp,
1311                                  &card->qdio.init_pool.entry_list, init_list){
1312                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1313                         free_page((unsigned long)pool_entry->elements[i]);
1314                 list_del(&pool_entry->init_list);
1315                 kfree(pool_entry);
1316         }
1317 }
1318
1319 static void qeth_clean_channel(struct qeth_channel *channel)
1320 {
1321         int cnt;
1322
1323         QETH_DBF_TEXT(SETUP, 2, "freech");
1324         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1325                 kfree(channel->iob[cnt].data);
1326 }
1327
1328 static void qeth_set_single_write_queues(struct qeth_card *card)
1329 {
1330         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1331             (card->qdio.no_out_queues == 4))
1332                 qeth_free_qdio_buffers(card);
1333
1334         card->qdio.no_out_queues = 1;
1335         if (card->qdio.default_out_queue != 0)
1336                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1337
1338         card->qdio.default_out_queue = 0;
1339 }
1340
1341 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1342 {
1343         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1344             (card->qdio.no_out_queues == 1)) {
1345                 qeth_free_qdio_buffers(card);
1346                 card->qdio.default_out_queue = 2;
1347         }
1348         card->qdio.no_out_queues = 4;
1349 }
1350
1351 static void qeth_update_from_chp_desc(struct qeth_card *card)
1352 {
1353         struct ccw_device *ccwdev;
1354         struct channel_path_desc *chp_dsc;
1355
1356         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1357
1358         ccwdev = card->data.ccwdev;
1359         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1360         if (!chp_dsc)
1361                 goto out;
1362
1363         card->info.func_level = 0x4100 + chp_dsc->desc;
1364         if (card->info.type == QETH_CARD_TYPE_IQD)
1365                 goto out;
1366
1367         /* CHPP field bit 6 == 1 -> single queue */
1368         if ((chp_dsc->chpp & 0x02) == 0x02)
1369                 qeth_set_single_write_queues(card);
1370         else
1371                 qeth_set_multiple_write_queues(card);
1372 out:
1373         kfree(chp_dsc);
1374         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1375         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1376 }
1377
1378 static void qeth_init_qdio_info(struct qeth_card *card)
1379 {
1380         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1381         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1382         /* inbound */
1383         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1384         if (card->info.type == QETH_CARD_TYPE_IQD)
1385                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1386         else
1387                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1388         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1389         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1390         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1391 }
1392
1393 static void qeth_set_intial_options(struct qeth_card *card)
1394 {
1395         card->options.route4.type = NO_ROUTER;
1396         card->options.route6.type = NO_ROUTER;
1397         card->options.fake_broadcast = 0;
1398         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1399         card->options.performance_stats = 0;
1400         card->options.rx_sg_cb = QETH_RX_SG_CB;
1401         card->options.isolation = ISOLATION_MODE_NONE;
1402         card->options.cq = QETH_CQ_DISABLED;
1403 }
1404
1405 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1406 {
1407         unsigned long flags;
1408         int rc = 0;
1409
1410         spin_lock_irqsave(&card->thread_mask_lock, flags);
1411         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1412                         (u8) card->thread_start_mask,
1413                         (u8) card->thread_allowed_mask,
1414                         (u8) card->thread_running_mask);
1415         rc = (card->thread_start_mask & thread);
1416         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1417         return rc;
1418 }
1419
1420 static void qeth_start_kernel_thread(struct work_struct *work)
1421 {
1422         struct task_struct *ts;
1423         struct qeth_card *card = container_of(work, struct qeth_card,
1424                                         kernel_thread_starter);
1425         QETH_CARD_TEXT(card , 2, "strthrd");
1426
1427         if (card->read.state != CH_STATE_UP &&
1428             card->write.state != CH_STATE_UP)
1429                 return;
1430         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1431                 ts = kthread_run(card->discipline->recover, (void *)card,
1432                                 "qeth_recover");
1433                 if (IS_ERR(ts)) {
1434                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1435                         qeth_clear_thread_running_bit(card,
1436                                 QETH_RECOVER_THREAD);
1437                 }
1438         }
1439 }
1440
1441 static void qeth_buffer_reclaim_work(struct work_struct *);
1442 static int qeth_setup_card(struct qeth_card *card)
1443 {
1444
1445         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1446         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1447
1448         card->read.state  = CH_STATE_DOWN;
1449         card->write.state = CH_STATE_DOWN;
1450         card->data.state  = CH_STATE_DOWN;
1451         card->state = CARD_STATE_DOWN;
1452         card->lan_online = 0;
1453         card->read_or_write_problem = 0;
1454         card->dev = NULL;
1455         spin_lock_init(&card->vlanlock);
1456         spin_lock_init(&card->mclock);
1457         spin_lock_init(&card->lock);
1458         spin_lock_init(&card->ip_lock);
1459         spin_lock_init(&card->thread_mask_lock);
1460         mutex_init(&card->conf_mutex);
1461         mutex_init(&card->discipline_mutex);
1462         card->thread_start_mask = 0;
1463         card->thread_allowed_mask = 0;
1464         card->thread_running_mask = 0;
1465         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1466         INIT_LIST_HEAD(&card->ip_list);
1467         INIT_LIST_HEAD(card->ip_tbd_list);
1468         INIT_LIST_HEAD(&card->cmd_waiter_list);
1469         init_waitqueue_head(&card->wait_q);
1470         /* initial options */
1471         qeth_set_intial_options(card);
1472         /* IP address takeover */
1473         INIT_LIST_HEAD(&card->ipato.entries);
1474         card->ipato.enabled = 0;
1475         card->ipato.invert4 = 0;
1476         card->ipato.invert6 = 0;
1477         /* init QDIO stuff */
1478         qeth_init_qdio_info(card);
1479         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1480         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1481         return 0;
1482 }
1483
1484 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1485 {
1486         struct qeth_card *card = container_of(slr, struct qeth_card,
1487                                         qeth_service_level);
1488         if (card->info.mcl_level[0])
1489                 seq_printf(m, "qeth: %s firmware level %s\n",
1490                         CARD_BUS_ID(card), card->info.mcl_level);
1491 }
1492
1493 static struct qeth_card *qeth_alloc_card(void)
1494 {
1495         struct qeth_card *card;
1496
1497         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1498         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1499         if (!card)
1500                 goto out;
1501         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1502         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1503         if (!card->ip_tbd_list) {
1504                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1505                 goto out_card;
1506         }
1507         if (qeth_setup_channel(&card->read))
1508                 goto out_ip;
1509         if (qeth_setup_channel(&card->write))
1510                 goto out_channel;
1511         card->options.layer2 = -1;
1512         card->qeth_service_level.seq_print = qeth_core_sl_print;
1513         register_service_level(&card->qeth_service_level);
1514         return card;
1515
1516 out_channel:
1517         qeth_clean_channel(&card->read);
1518 out_ip:
1519         kfree(card->ip_tbd_list);
1520 out_card:
1521         kfree(card);
1522 out:
1523         return NULL;
1524 }
1525
1526 static int qeth_determine_card_type(struct qeth_card *card)
1527 {
1528         int i = 0;
1529
1530         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1531
1532         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1533         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1534         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1535                 if ((CARD_RDEV(card)->id.dev_type ==
1536                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1537                     (CARD_RDEV(card)->id.dev_model ==
1538                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1539                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1540                         card->qdio.no_out_queues =
1541                                 known_devices[i][QETH_QUEUE_NO_IND];
1542                         card->qdio.no_in_queues = 1;
1543                         card->info.is_multicast_different =
1544                                 known_devices[i][QETH_MULTICAST_IND];
1545                         qeth_update_from_chp_desc(card);
1546                         return 0;
1547                 }
1548                 i++;
1549         }
1550         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1551         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1552                 "unknown type\n");
1553         return -ENOENT;
1554 }
1555
1556 static int qeth_clear_channel(struct qeth_channel *channel)
1557 {
1558         unsigned long flags;
1559         struct qeth_card *card;
1560         int rc;
1561
1562         card = CARD_FROM_CDEV(channel->ccwdev);
1563         QETH_CARD_TEXT(card, 3, "clearch");
1564         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1565         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1566         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1567
1568         if (rc)
1569                 return rc;
1570         rc = wait_event_interruptible_timeout(card->wait_q,
1571                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1572         if (rc == -ERESTARTSYS)
1573                 return rc;
1574         if (channel->state != CH_STATE_STOPPED)
1575                 return -ETIME;
1576         channel->state = CH_STATE_DOWN;
1577         return 0;
1578 }
1579
1580 static int qeth_halt_channel(struct qeth_channel *channel)
1581 {
1582         unsigned long flags;
1583         struct qeth_card *card;
1584         int rc;
1585
1586         card = CARD_FROM_CDEV(channel->ccwdev);
1587         QETH_CARD_TEXT(card, 3, "haltch");
1588         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1589         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1590         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1591
1592         if (rc)
1593                 return rc;
1594         rc = wait_event_interruptible_timeout(card->wait_q,
1595                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1596         if (rc == -ERESTARTSYS)
1597                 return rc;
1598         if (channel->state != CH_STATE_HALTED)
1599                 return -ETIME;
1600         return 0;
1601 }
1602
1603 static int qeth_halt_channels(struct qeth_card *card)
1604 {
1605         int rc1 = 0, rc2 = 0, rc3 = 0;
1606
1607         QETH_CARD_TEXT(card, 3, "haltchs");
1608         rc1 = qeth_halt_channel(&card->read);
1609         rc2 = qeth_halt_channel(&card->write);
1610         rc3 = qeth_halt_channel(&card->data);
1611         if (rc1)
1612                 return rc1;
1613         if (rc2)
1614                 return rc2;
1615         return rc3;
1616 }
1617
1618 static int qeth_clear_channels(struct qeth_card *card)
1619 {
1620         int rc1 = 0, rc2 = 0, rc3 = 0;
1621
1622         QETH_CARD_TEXT(card, 3, "clearchs");
1623         rc1 = qeth_clear_channel(&card->read);
1624         rc2 = qeth_clear_channel(&card->write);
1625         rc3 = qeth_clear_channel(&card->data);
1626         if (rc1)
1627                 return rc1;
1628         if (rc2)
1629                 return rc2;
1630         return rc3;
1631 }
1632
1633 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1634 {
1635         int rc = 0;
1636
1637         QETH_CARD_TEXT(card, 3, "clhacrd");
1638
1639         if (halt)
1640                 rc = qeth_halt_channels(card);
1641         if (rc)
1642                 return rc;
1643         return qeth_clear_channels(card);
1644 }
1645
1646 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1647 {
1648         int rc = 0;
1649
1650         QETH_CARD_TEXT(card, 3, "qdioclr");
1651         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1652                 QETH_QDIO_CLEANING)) {
1653         case QETH_QDIO_ESTABLISHED:
1654                 if (card->info.type == QETH_CARD_TYPE_IQD)
1655                         rc = qdio_shutdown(CARD_DDEV(card),
1656                                 QDIO_FLAG_CLEANUP_USING_HALT);
1657                 else
1658                         rc = qdio_shutdown(CARD_DDEV(card),
1659                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1660                 if (rc)
1661                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1662                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1663                 break;
1664         case QETH_QDIO_CLEANING:
1665                 return rc;
1666         default:
1667                 break;
1668         }
1669         rc = qeth_clear_halt_card(card, use_halt);
1670         if (rc)
1671                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1672         card->state = CARD_STATE_DOWN;
1673         return rc;
1674 }
1675 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1676
1677 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1678                                int *length)
1679 {
1680         struct ciw *ciw;
1681         char *rcd_buf;
1682         int ret;
1683         struct qeth_channel *channel = &card->data;
1684         unsigned long flags;
1685
1686         /*
1687          * scan for RCD command in extended SenseID data
1688          */
1689         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1690         if (!ciw || ciw->cmd == 0)
1691                 return -EOPNOTSUPP;
1692         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1693         if (!rcd_buf)
1694                 return -ENOMEM;
1695
1696         channel->ccw.cmd_code = ciw->cmd;
1697         channel->ccw.cda = (__u32) __pa(rcd_buf);
1698         channel->ccw.count = ciw->count;
1699         channel->ccw.flags = CCW_FLAG_SLI;
1700         channel->state = CH_STATE_RCD;
1701         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1702         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1703                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1704                                        QETH_RCD_TIMEOUT);
1705         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1706         if (!ret)
1707                 wait_event(card->wait_q,
1708                            (channel->state == CH_STATE_RCD_DONE ||
1709                             channel->state == CH_STATE_DOWN));
1710         if (channel->state == CH_STATE_DOWN)
1711                 ret = -EIO;
1712         else
1713                 channel->state = CH_STATE_DOWN;
1714         if (ret) {
1715                 kfree(rcd_buf);
1716                 *buffer = NULL;
1717                 *length = 0;
1718         } else {
1719                 *length = ciw->count;
1720                 *buffer = rcd_buf;
1721         }
1722         return ret;
1723 }
1724
1725 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1726 {
1727         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1728         card->info.chpid = prcd[30];
1729         card->info.unit_addr2 = prcd[31];
1730         card->info.cula = prcd[63];
1731         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1732                                (prcd[0x11] == _ascebc['M']));
1733 }
1734
1735 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1736 {
1737         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1738
1739         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1740             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1741                 card->info.blkt.time_total = 0;
1742                 card->info.blkt.inter_packet = 0;
1743                 card->info.blkt.inter_packet_jumbo = 0;
1744         } else {
1745                 card->info.blkt.time_total = 250;
1746                 card->info.blkt.inter_packet = 5;
1747                 card->info.blkt.inter_packet_jumbo = 15;
1748         }
1749 }
1750
1751 static void qeth_init_tokens(struct qeth_card *card)
1752 {
1753         card->token.issuer_rm_w = 0x00010103UL;
1754         card->token.cm_filter_w = 0x00010108UL;
1755         card->token.cm_connection_w = 0x0001010aUL;
1756         card->token.ulp_filter_w = 0x0001010bUL;
1757         card->token.ulp_connection_w = 0x0001010dUL;
1758 }
1759
1760 static void qeth_init_func_level(struct qeth_card *card)
1761 {
1762         switch (card->info.type) {
1763         case QETH_CARD_TYPE_IQD:
1764                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1765                 break;
1766         case QETH_CARD_TYPE_OSD:
1767         case QETH_CARD_TYPE_OSN:
1768                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1769                 break;
1770         default:
1771                 break;
1772         }
1773 }
1774
1775 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1776                 void (*idx_reply_cb)(struct qeth_channel *,
1777                         struct qeth_cmd_buffer *))
1778 {
1779         struct qeth_cmd_buffer *iob;
1780         unsigned long flags;
1781         int rc;
1782         struct qeth_card *card;
1783
1784         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1785         card = CARD_FROM_CDEV(channel->ccwdev);
1786         iob = qeth_get_buffer(channel);
1787         iob->callback = idx_reply_cb;
1788         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1789         channel->ccw.count = QETH_BUFSIZE;
1790         channel->ccw.cda = (__u32) __pa(iob->data);
1791
1792         wait_event(card->wait_q,
1793                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1794         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1795         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1796         rc = ccw_device_start(channel->ccwdev,
1797                               &channel->ccw, (addr_t) iob, 0, 0);
1798         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1799
1800         if (rc) {
1801                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1802                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1803                 atomic_set(&channel->irq_pending, 0);
1804                 wake_up(&card->wait_q);
1805                 return rc;
1806         }
1807         rc = wait_event_interruptible_timeout(card->wait_q,
1808                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1809         if (rc == -ERESTARTSYS)
1810                 return rc;
1811         if (channel->state != CH_STATE_UP) {
1812                 rc = -ETIME;
1813                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1814                 qeth_clear_cmd_buffers(channel);
1815         } else
1816                 rc = 0;
1817         return rc;
1818 }
1819
1820 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1821                 void (*idx_reply_cb)(struct qeth_channel *,
1822                         struct qeth_cmd_buffer *))
1823 {
1824         struct qeth_card *card;
1825         struct qeth_cmd_buffer *iob;
1826         unsigned long flags;
1827         __u16 temp;
1828         __u8 tmp;
1829         int rc;
1830         struct ccw_dev_id temp_devid;
1831
1832         card = CARD_FROM_CDEV(channel->ccwdev);
1833
1834         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1835
1836         iob = qeth_get_buffer(channel);
1837         iob->callback = idx_reply_cb;
1838         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1839         channel->ccw.count = IDX_ACTIVATE_SIZE;
1840         channel->ccw.cda = (__u32) __pa(iob->data);
1841         if (channel == &card->write) {
1842                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1843                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1844                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1845                 card->seqno.trans_hdr++;
1846         } else {
1847                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1848                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1849                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1850         }
1851         tmp = ((__u8)card->info.portno) | 0x80;
1852         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1853         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1854                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1855         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1856                &card->info.func_level, sizeof(__u16));
1857         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1858         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1859         temp = (card->info.cula << 8) + card->info.unit_addr2;
1860         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1861
1862         wait_event(card->wait_q,
1863                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1864         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1865         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1866         rc = ccw_device_start(channel->ccwdev,
1867                               &channel->ccw, (addr_t) iob, 0, 0);
1868         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1869
1870         if (rc) {
1871                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1872                         rc);
1873                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1874                 atomic_set(&channel->irq_pending, 0);
1875                 wake_up(&card->wait_q);
1876                 return rc;
1877         }
1878         rc = wait_event_interruptible_timeout(card->wait_q,
1879                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1880         if (rc == -ERESTARTSYS)
1881                 return rc;
1882         if (channel->state != CH_STATE_ACTIVATING) {
1883                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1884                         " failed to recover an error on the device\n");
1885                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1886                         dev_name(&channel->ccwdev->dev));
1887                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1888                 qeth_clear_cmd_buffers(channel);
1889                 return -ETIME;
1890         }
1891         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1892 }
1893
1894 static int qeth_peer_func_level(int level)
1895 {
1896         if ((level & 0xff) == 8)
1897                 return (level & 0xff) + 0x400;
1898         if (((level >> 8) & 3) == 1)
1899                 return (level & 0xff) + 0x200;
1900         return level;
1901 }
1902
1903 static void qeth_idx_write_cb(struct qeth_channel *channel,
1904                 struct qeth_cmd_buffer *iob)
1905 {
1906         struct qeth_card *card;
1907         __u16 temp;
1908
1909         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1910
1911         if (channel->state == CH_STATE_DOWN) {
1912                 channel->state = CH_STATE_ACTIVATING;
1913                 goto out;
1914         }
1915         card = CARD_FROM_CDEV(channel->ccwdev);
1916
1917         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1918                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1919                         dev_err(&card->write.ccwdev->dev,
1920                                 "The adapter is used exclusively by another "
1921                                 "host\n");
1922                 else
1923                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1924                                 " negative reply\n",
1925                                 dev_name(&card->write.ccwdev->dev));
1926                 goto out;
1927         }
1928         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1929         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1930                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1931                         "function level mismatch (sent: 0x%x, received: "
1932                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1933                         card->info.func_level, temp);
1934                 goto out;
1935         }
1936         channel->state = CH_STATE_UP;
1937 out:
1938         qeth_release_buffer(channel, iob);
1939 }
1940
1941 static void qeth_idx_read_cb(struct qeth_channel *channel,
1942                 struct qeth_cmd_buffer *iob)
1943 {
1944         struct qeth_card *card;
1945         __u16 temp;
1946
1947         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1948         if (channel->state == CH_STATE_DOWN) {
1949                 channel->state = CH_STATE_ACTIVATING;
1950                 goto out;
1951         }
1952
1953         card = CARD_FROM_CDEV(channel->ccwdev);
1954         if (qeth_check_idx_response(card, iob->data))
1955                         goto out;
1956
1957         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1958                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1959                 case QETH_IDX_ACT_ERR_EXCL:
1960                         dev_err(&card->write.ccwdev->dev,
1961                                 "The adapter is used exclusively by another "
1962                                 "host\n");
1963                         break;
1964                 case QETH_IDX_ACT_ERR_AUTH:
1965                 case QETH_IDX_ACT_ERR_AUTH_USER:
1966                         dev_err(&card->read.ccwdev->dev,
1967                                 "Setting the device online failed because of "
1968                                 "insufficient authorization\n");
1969                         break;
1970                 default:
1971                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1972                                 " negative reply\n",
1973                                 dev_name(&card->read.ccwdev->dev));
1974                 }
1975                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1976                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1977                 goto out;
1978         }
1979
1980 /**
1981  *  * temporary fix for microcode bug
1982  *   * to revert it,replace OR by AND
1983  *    */
1984         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1985              (card->info.type == QETH_CARD_TYPE_OSD))
1986                 card->info.portname_required = 1;
1987
1988         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1989         if (temp != qeth_peer_func_level(card->info.func_level)) {
1990                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1991                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1992                         dev_name(&card->read.ccwdev->dev),
1993                         card->info.func_level, temp);
1994                 goto out;
1995         }
1996         memcpy(&card->token.issuer_rm_r,
1997                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1998                QETH_MPC_TOKEN_LENGTH);
1999         memcpy(&card->info.mcl_level[0],
2000                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2001         channel->state = CH_STATE_UP;
2002 out:
2003         qeth_release_buffer(channel, iob);
2004 }
2005
2006 void qeth_prepare_control_data(struct qeth_card *card, int len,
2007                 struct qeth_cmd_buffer *iob)
2008 {
2009         qeth_setup_ccw(&card->write, iob->data, len);
2010         iob->callback = qeth_release_buffer;
2011
2012         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2013                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2014         card->seqno.trans_hdr++;
2015         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2016                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2017         card->seqno.pdu_hdr++;
2018         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2019                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2020         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2021 }
2022 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2023
2024 int qeth_send_control_data(struct qeth_card *card, int len,
2025                 struct qeth_cmd_buffer *iob,
2026                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2027                         unsigned long),
2028                 void *reply_param)
2029 {
2030         int rc;
2031         unsigned long flags;
2032         struct qeth_reply *reply = NULL;
2033         unsigned long timeout, event_timeout;
2034         struct qeth_ipa_cmd *cmd;
2035
2036         QETH_CARD_TEXT(card, 2, "sendctl");
2037
2038         if (card->read_or_write_problem) {
2039                 qeth_release_buffer(iob->channel, iob);
2040                 return -EIO;
2041         }
2042         reply = qeth_alloc_reply(card);
2043         if (!reply) {
2044                 return -ENOMEM;
2045         }
2046         reply->callback = reply_cb;
2047         reply->param = reply_param;
2048         if (card->state == CARD_STATE_DOWN)
2049                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2050         else
2051                 reply->seqno = card->seqno.ipa++;
2052         init_waitqueue_head(&reply->wait_q);
2053         spin_lock_irqsave(&card->lock, flags);
2054         list_add_tail(&reply->list, &card->cmd_waiter_list);
2055         spin_unlock_irqrestore(&card->lock, flags);
2056         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2057
2058         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2059         qeth_prepare_control_data(card, len, iob);
2060
2061         if (IS_IPA(iob->data))
2062                 event_timeout = QETH_IPA_TIMEOUT;
2063         else
2064                 event_timeout = QETH_TIMEOUT;
2065         timeout = jiffies + event_timeout;
2066
2067         QETH_CARD_TEXT(card, 6, "noirqpnd");
2068         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2069         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2070                               (addr_t) iob, 0, 0);
2071         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2072         if (rc) {
2073                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2074                         "ccw_device_start rc = %i\n",
2075                         dev_name(&card->write.ccwdev->dev), rc);
2076                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2077                 spin_lock_irqsave(&card->lock, flags);
2078                 list_del_init(&reply->list);
2079                 qeth_put_reply(reply);
2080                 spin_unlock_irqrestore(&card->lock, flags);
2081                 qeth_release_buffer(iob->channel, iob);
2082                 atomic_set(&card->write.irq_pending, 0);
2083                 wake_up(&card->wait_q);
2084                 return rc;
2085         }
2086
2087         /* we have only one long running ipassist, since we can ensure
2088            process context of this command we can sleep */
2089         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2090         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2091             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2092                 if (!wait_event_timeout(reply->wait_q,
2093                     atomic_read(&reply->received), event_timeout))
2094                         goto time_err;
2095         } else {
2096                 while (!atomic_read(&reply->received)) {
2097                         if (time_after(jiffies, timeout))
2098                                 goto time_err;
2099                         cpu_relax();
2100                 }
2101         }
2102
2103         if (reply->rc == -EIO)
2104                 goto error;
2105         rc = reply->rc;
2106         qeth_put_reply(reply);
2107         return rc;
2108
2109 time_err:
2110         reply->rc = -ETIME;
2111         spin_lock_irqsave(&reply->card->lock, flags);
2112         list_del_init(&reply->list);
2113         spin_unlock_irqrestore(&reply->card->lock, flags);
2114         atomic_inc(&reply->received);
2115 error:
2116         atomic_set(&card->write.irq_pending, 0);
2117         qeth_release_buffer(iob->channel, iob);
2118         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2119         rc = reply->rc;
2120         qeth_put_reply(reply);
2121         return rc;
2122 }
2123 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2124
2125 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2126                 unsigned long data)
2127 {
2128         struct qeth_cmd_buffer *iob;
2129
2130         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2131
2132         iob = (struct qeth_cmd_buffer *) data;
2133         memcpy(&card->token.cm_filter_r,
2134                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2135                QETH_MPC_TOKEN_LENGTH);
2136         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2137         return 0;
2138 }
2139
2140 static int qeth_cm_enable(struct qeth_card *card)
2141 {
2142         int rc;
2143         struct qeth_cmd_buffer *iob;
2144
2145         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2146
2147         iob = qeth_wait_for_buffer(&card->write);
2148         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2149         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2150                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2151         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2152                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2153
2154         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2155                                     qeth_cm_enable_cb, NULL);
2156         return rc;
2157 }
2158
2159 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2160                 unsigned long data)
2161 {
2162
2163         struct qeth_cmd_buffer *iob;
2164
2165         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2166
2167         iob = (struct qeth_cmd_buffer *) data;
2168         memcpy(&card->token.cm_connection_r,
2169                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2170                QETH_MPC_TOKEN_LENGTH);
2171         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2172         return 0;
2173 }
2174
2175 static int qeth_cm_setup(struct qeth_card *card)
2176 {
2177         int rc;
2178         struct qeth_cmd_buffer *iob;
2179
2180         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2181
2182         iob = qeth_wait_for_buffer(&card->write);
2183         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2184         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2185                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2186         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2187                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2188         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2189                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2190         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2191                                     qeth_cm_setup_cb, NULL);
2192         return rc;
2193
2194 }
2195
2196 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2197 {
2198         switch (card->info.type) {
2199         case QETH_CARD_TYPE_UNKNOWN:
2200                 return 1500;
2201         case QETH_CARD_TYPE_IQD:
2202                 return card->info.max_mtu;
2203         case QETH_CARD_TYPE_OSD:
2204                 switch (card->info.link_type) {
2205                 case QETH_LINK_TYPE_HSTR:
2206                 case QETH_LINK_TYPE_LANE_TR:
2207                         return 2000;
2208                 default:
2209                         return card->options.layer2 ? 1500 : 1492;
2210                 }
2211         case QETH_CARD_TYPE_OSM:
2212         case QETH_CARD_TYPE_OSX:
2213                 return card->options.layer2 ? 1500 : 1492;
2214         default:
2215                 return 1500;
2216         }
2217 }
2218
2219 static inline int qeth_get_mtu_outof_framesize(int framesize)
2220 {
2221         switch (framesize) {
2222         case 0x4000:
2223                 return 8192;
2224         case 0x6000:
2225                 return 16384;
2226         case 0xa000:
2227                 return 32768;
2228         case 0xffff:
2229                 return 57344;
2230         default:
2231                 return 0;
2232         }
2233 }
2234
2235 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2236 {
2237         switch (card->info.type) {
2238         case QETH_CARD_TYPE_OSD:
2239         case QETH_CARD_TYPE_OSM:
2240         case QETH_CARD_TYPE_OSX:
2241         case QETH_CARD_TYPE_IQD:
2242                 return ((mtu >= 576) &&
2243                         (mtu <= card->info.max_mtu));
2244         case QETH_CARD_TYPE_OSN:
2245         case QETH_CARD_TYPE_UNKNOWN:
2246         default:
2247                 return 1;
2248         }
2249 }
2250
2251 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2252                 unsigned long data)
2253 {
2254
2255         __u16 mtu, framesize;
2256         __u16 len;
2257         __u8 link_type;
2258         struct qeth_cmd_buffer *iob;
2259
2260         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2261
2262         iob = (struct qeth_cmd_buffer *) data;
2263         memcpy(&card->token.ulp_filter_r,
2264                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2265                QETH_MPC_TOKEN_LENGTH);
2266         if (card->info.type == QETH_CARD_TYPE_IQD) {
2267                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2268                 mtu = qeth_get_mtu_outof_framesize(framesize);
2269                 if (!mtu) {
2270                         iob->rc = -EINVAL;
2271                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2272                         return 0;
2273                 }
2274                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2275                         /* frame size has changed */
2276                         if (card->dev &&
2277                             ((card->dev->mtu == card->info.initial_mtu) ||
2278                              (card->dev->mtu > mtu)))
2279                                 card->dev->mtu = mtu;
2280                         qeth_free_qdio_buffers(card);
2281                 }
2282                 card->info.initial_mtu = mtu;
2283                 card->info.max_mtu = mtu;
2284                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2285         } else {
2286                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2287                         iob->data);
2288                 card->info.initial_mtu = min(card->info.max_mtu,
2289                                         qeth_get_initial_mtu_for_card(card));
2290                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2291         }
2292
2293         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2294         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2295                 memcpy(&link_type,
2296                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2297                 card->info.link_type = link_type;
2298         } else
2299                 card->info.link_type = 0;
2300         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2301         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2302         return 0;
2303 }
2304
2305 static int qeth_ulp_enable(struct qeth_card *card)
2306 {
2307         int rc;
2308         char prot_type;
2309         struct qeth_cmd_buffer *iob;
2310
2311         /*FIXME: trace view callbacks*/
2312         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2313
2314         iob = qeth_wait_for_buffer(&card->write);
2315         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2316
2317         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2318                 (__u8) card->info.portno;
2319         if (card->options.layer2)
2320                 if (card->info.type == QETH_CARD_TYPE_OSN)
2321                         prot_type = QETH_PROT_OSN2;
2322                 else
2323                         prot_type = QETH_PROT_LAYER2;
2324         else
2325                 prot_type = QETH_PROT_TCPIP;
2326
2327         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2328         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2329                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2330         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2331                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2332         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2333                card->info.portname, 9);
2334         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2335                                     qeth_ulp_enable_cb, NULL);
2336         return rc;
2337
2338 }
2339
2340 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2341                 unsigned long data)
2342 {
2343         struct qeth_cmd_buffer *iob;
2344
2345         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2346
2347         iob = (struct qeth_cmd_buffer *) data;
2348         memcpy(&card->token.ulp_connection_r,
2349                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2350                QETH_MPC_TOKEN_LENGTH);
2351         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2352                      3)) {
2353                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2354                 dev_err(&card->gdev->dev, "A connection could not be "
2355                         "established because of an OLM limit\n");
2356                 iob->rc = -EMLINK;
2357         }
2358         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2359         return 0;
2360 }
2361
2362 static int qeth_ulp_setup(struct qeth_card *card)
2363 {
2364         int rc;
2365         __u16 temp;
2366         struct qeth_cmd_buffer *iob;
2367         struct ccw_dev_id dev_id;
2368
2369         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2370
2371         iob = qeth_wait_for_buffer(&card->write);
2372         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2373
2374         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2375                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2376         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2377                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2378         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2379                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2380
2381         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2382         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2383         temp = (card->info.cula << 8) + card->info.unit_addr2;
2384         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2385         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2386                                     qeth_ulp_setup_cb, NULL);
2387         return rc;
2388 }
2389
2390 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2391 {
2392         int rc;
2393         struct qeth_qdio_out_buffer *newbuf;
2394
2395         rc = 0;
2396         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2397         if (!newbuf) {
2398                 rc = -ENOMEM;
2399                 goto out;
2400         }
2401         newbuf->buffer = q->qdio_bufs[bidx];
2402         skb_queue_head_init(&newbuf->skb_list);
2403         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2404         newbuf->q = q;
2405         newbuf->aob = NULL;
2406         newbuf->next_pending = q->bufs[bidx];
2407         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2408         q->bufs[bidx] = newbuf;
2409         if (q->bufstates) {
2410                 q->bufstates[bidx].user = newbuf;
2411                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2412                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2413                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2414                                 (long) newbuf->next_pending);
2415         }
2416 out:
2417         return rc;
2418 }
2419
2420 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2421 {
2422         if (!q)
2423                 return;
2424
2425         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2426         kfree(q);
2427 }
2428
2429 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2430 {
2431         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2432
2433         if (!q)
2434                 return NULL;
2435
2436         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2437                 kfree(q);
2438                 return NULL;
2439         }
2440         return q;
2441 }
2442
2443 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2444 {
2445         int i, j;
2446
2447         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2448
2449         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2450                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2451                 return 0;
2452
2453         QETH_DBF_TEXT(SETUP, 2, "inq");
2454         card->qdio.in_q = qeth_alloc_qdio_queue();
2455         if (!card->qdio.in_q)
2456                 goto out_nomem;
2457
2458         /* inbound buffer pool */
2459         if (qeth_alloc_buffer_pool(card))
2460                 goto out_freeinq;
2461
2462         /* outbound */
2463         card->qdio.out_qs =
2464                 kzalloc(card->qdio.no_out_queues *
2465                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2466         if (!card->qdio.out_qs)
2467                 goto out_freepool;
2468         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2469                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2470                 if (!card->qdio.out_qs[i])
2471                         goto out_freeoutq;
2472                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2473                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2474                 card->qdio.out_qs[i]->queue_no = i;
2475                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2476                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2477                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2478                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2479                                 goto out_freeoutqbufs;
2480                 }
2481         }
2482
2483         /* completion */
2484         if (qeth_alloc_cq(card))
2485                 goto out_freeoutq;
2486
2487         return 0;
2488
2489 out_freeoutqbufs:
2490         while (j > 0) {
2491                 --j;
2492                 kmem_cache_free(qeth_qdio_outbuf_cache,
2493                                 card->qdio.out_qs[i]->bufs[j]);
2494                 card->qdio.out_qs[i]->bufs[j] = NULL;
2495         }
2496 out_freeoutq:
2497         while (i > 0) {
2498                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2499                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2500         }
2501         kfree(card->qdio.out_qs);
2502         card->qdio.out_qs = NULL;
2503 out_freepool:
2504         qeth_free_buffer_pool(card);
2505 out_freeinq:
2506         qeth_free_qdio_queue(card->qdio.in_q);
2507         card->qdio.in_q = NULL;
2508 out_nomem:
2509         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2510         return -ENOMEM;
2511 }
2512
2513 static void qeth_free_qdio_buffers(struct qeth_card *card)
2514 {
2515         int i, j;
2516
2517         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2518                 QETH_QDIO_UNINITIALIZED)
2519                 return;
2520
2521         qeth_free_cq(card);
2522         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2523         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2524                 if (card->qdio.in_q->bufs[j].rx_skb)
2525                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2526         }
2527         qeth_free_qdio_queue(card->qdio.in_q);
2528         card->qdio.in_q = NULL;
2529         /* inbound buffer pool */
2530         qeth_free_buffer_pool(card);
2531         /* free outbound qdio_qs */
2532         if (card->qdio.out_qs) {
2533                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2534                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2535                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2536                 }
2537                 kfree(card->qdio.out_qs);
2538                 card->qdio.out_qs = NULL;
2539         }
2540 }
2541
2542 static void qeth_create_qib_param_field(struct qeth_card *card,
2543                 char *param_field)
2544 {
2545
2546         param_field[0] = _ascebc['P'];
2547         param_field[1] = _ascebc['C'];
2548         param_field[2] = _ascebc['I'];
2549         param_field[3] = _ascebc['T'];
2550         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2551         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2552         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2553 }
2554
2555 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2556                 char *param_field)
2557 {
2558         param_field[16] = _ascebc['B'];
2559         param_field[17] = _ascebc['L'];
2560         param_field[18] = _ascebc['K'];
2561         param_field[19] = _ascebc['T'];
2562         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2563         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2564         *((unsigned int *) (&param_field[28])) =
2565                 card->info.blkt.inter_packet_jumbo;
2566 }
2567
2568 static int qeth_qdio_activate(struct qeth_card *card)
2569 {
2570         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2571         return qdio_activate(CARD_DDEV(card));
2572 }
2573
2574 static int qeth_dm_act(struct qeth_card *card)
2575 {
2576         int rc;
2577         struct qeth_cmd_buffer *iob;
2578
2579         QETH_DBF_TEXT(SETUP, 2, "dmact");
2580
2581         iob = qeth_wait_for_buffer(&card->write);
2582         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2583
2584         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2585                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2586         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2587                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2588         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2589         return rc;
2590 }
2591
2592 static int qeth_mpc_initialize(struct qeth_card *card)
2593 {
2594         int rc;
2595
2596         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2597
2598         rc = qeth_issue_next_read(card);
2599         if (rc) {
2600                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2601                 return rc;
2602         }
2603         rc = qeth_cm_enable(card);
2604         if (rc) {
2605                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2606                 goto out_qdio;
2607         }
2608         rc = qeth_cm_setup(card);
2609         if (rc) {
2610                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2611                 goto out_qdio;
2612         }
2613         rc = qeth_ulp_enable(card);
2614         if (rc) {
2615                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2616                 goto out_qdio;
2617         }
2618         rc = qeth_ulp_setup(card);
2619         if (rc) {
2620                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2621                 goto out_qdio;
2622         }
2623         rc = qeth_alloc_qdio_buffers(card);
2624         if (rc) {
2625                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2626                 goto out_qdio;
2627         }
2628         rc = qeth_qdio_establish(card);
2629         if (rc) {
2630                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2631                 qeth_free_qdio_buffers(card);
2632                 goto out_qdio;
2633         }
2634         rc = qeth_qdio_activate(card);
2635         if (rc) {
2636                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2637                 goto out_qdio;
2638         }
2639         rc = qeth_dm_act(card);
2640         if (rc) {
2641                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2642                 goto out_qdio;
2643         }
2644
2645         return 0;
2646 out_qdio:
2647         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2648         qdio_free(CARD_DDEV(card));
2649         return rc;
2650 }
2651
2652 static void qeth_print_status_with_portname(struct qeth_card *card)
2653 {
2654         char dbf_text[15];
2655         int i;
2656
2657         sprintf(dbf_text, "%s", card->info.portname + 1);
2658         for (i = 0; i < 8; i++)
2659                 dbf_text[i] =
2660                         (char) _ebcasc[(__u8) dbf_text[i]];
2661         dbf_text[8] = 0;
2662         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2663                "with link type %s (portname: %s)\n",
2664                qeth_get_cardname(card),
2665                (card->info.mcl_level[0]) ? " (level: " : "",
2666                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2667                (card->info.mcl_level[0]) ? ")" : "",
2668                qeth_get_cardname_short(card),
2669                dbf_text);
2670
2671 }
2672
2673 static void qeth_print_status_no_portname(struct qeth_card *card)
2674 {
2675         if (card->info.portname[0])
2676                 dev_info(&card->gdev->dev, "Device is a%s "
2677                        "card%s%s%s\nwith link type %s "
2678                        "(no portname needed by interface).\n",
2679                        qeth_get_cardname(card),
2680                        (card->info.mcl_level[0]) ? " (level: " : "",
2681                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2682                        (card->info.mcl_level[0]) ? ")" : "",
2683                        qeth_get_cardname_short(card));
2684         else
2685                 dev_info(&card->gdev->dev, "Device is a%s "
2686                        "card%s%s%s\nwith link type %s.\n",
2687                        qeth_get_cardname(card),
2688                        (card->info.mcl_level[0]) ? " (level: " : "",
2689                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2690                        (card->info.mcl_level[0]) ? ")" : "",
2691                        qeth_get_cardname_short(card));
2692 }
2693
2694 void qeth_print_status_message(struct qeth_card *card)
2695 {
2696         switch (card->info.type) {
2697         case QETH_CARD_TYPE_OSD:
2698         case QETH_CARD_TYPE_OSM:
2699         case QETH_CARD_TYPE_OSX:
2700                 /* VM will use a non-zero first character
2701                  * to indicate a HiperSockets like reporting
2702                  * of the level OSA sets the first character to zero
2703                  * */
2704                 if (!card->info.mcl_level[0]) {
2705                         sprintf(card->info.mcl_level, "%02x%02x",
2706                                 card->info.mcl_level[2],
2707                                 card->info.mcl_level[3]);
2708
2709                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2710                         break;
2711                 }
2712                 /* fallthrough */
2713         case QETH_CARD_TYPE_IQD:
2714                 if ((card->info.guestlan) ||
2715                     (card->info.mcl_level[0] & 0x80)) {
2716                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2717                                 card->info.mcl_level[0]];
2718                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2719                                 card->info.mcl_level[1]];
2720                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2721                                 card->info.mcl_level[2]];
2722                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2723                                 card->info.mcl_level[3]];
2724                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2725                 }
2726                 break;
2727         default:
2728                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2729         }
2730         if (card->info.portname_required)
2731                 qeth_print_status_with_portname(card);
2732         else
2733                 qeth_print_status_no_portname(card);
2734 }
2735 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2736
2737 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2738 {
2739         struct qeth_buffer_pool_entry *entry;
2740
2741         QETH_CARD_TEXT(card, 5, "inwrklst");
2742
2743         list_for_each_entry(entry,
2744                             &card->qdio.init_pool.entry_list, init_list) {
2745                 qeth_put_buffer_pool_entry(card, entry);
2746         }
2747 }
2748
2749 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2750                 struct qeth_card *card)
2751 {
2752         struct list_head *plh;
2753         struct qeth_buffer_pool_entry *entry;
2754         int i, free;
2755         struct page *page;
2756
2757         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2758                 return NULL;
2759
2760         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2761                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2762                 free = 1;
2763                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2764                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2765                                 free = 0;
2766                                 break;
2767                         }
2768                 }
2769                 if (free) {
2770                         list_del_init(&entry->list);
2771                         return entry;
2772                 }
2773         }
2774
2775         /* no free buffer in pool so take first one and swap pages */
2776         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2777                         struct qeth_buffer_pool_entry, list);
2778         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2779                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2780                         page = alloc_page(GFP_ATOMIC);
2781                         if (!page) {
2782                                 return NULL;
2783                         } else {
2784                                 free_page((unsigned long)entry->elements[i]);
2785                                 entry->elements[i] = page_address(page);
2786                                 if (card->options.performance_stats)
2787                                         card->perf_stats.sg_alloc_page_rx++;
2788                         }
2789                 }
2790         }
2791         list_del_init(&entry->list);
2792         return entry;
2793 }
2794
2795 static int qeth_init_input_buffer(struct qeth_card *card,
2796                 struct qeth_qdio_buffer *buf)
2797 {
2798         struct qeth_buffer_pool_entry *pool_entry;
2799         int i;
2800
2801         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2802                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2803                 if (!buf->rx_skb)
2804                         return 1;
2805         }
2806
2807         pool_entry = qeth_find_free_buffer_pool_entry(card);
2808         if (!pool_entry)
2809                 return 1;
2810
2811         /*
2812          * since the buffer is accessed only from the input_tasklet
2813          * there shouldn't be a need to synchronize; also, since we use
2814          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2815          * buffers
2816          */
2817
2818         buf->pool_entry = pool_entry;
2819         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2820                 buf->buffer->element[i].length = PAGE_SIZE;
2821                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2822                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2823                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2824                 else
2825                         buf->buffer->element[i].eflags = 0;
2826                 buf->buffer->element[i].sflags = 0;
2827         }
2828         return 0;
2829 }
2830
2831 int qeth_init_qdio_queues(struct qeth_card *card)
2832 {
2833         int i, j;
2834         int rc;
2835
2836         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2837
2838         /* inbound queue */
2839         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2840                            QDIO_MAX_BUFFERS_PER_Q);
2841         qeth_initialize_working_pool_list(card);
2842         /*give only as many buffers to hardware as we have buffer pool entries*/
2843         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2844                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2845         card->qdio.in_q->next_buf_to_init =
2846                 card->qdio.in_buf_pool.buf_count - 1;
2847         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2848                      card->qdio.in_buf_pool.buf_count - 1);
2849         if (rc) {
2850                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2851                 return rc;
2852         }
2853
2854         /* completion */
2855         rc = qeth_cq_init(card);
2856         if (rc) {
2857                 return rc;
2858         }
2859
2860         /* outbound queue */
2861         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2862                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2863                                    QDIO_MAX_BUFFERS_PER_Q);
2864                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2865                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2866                                         card->qdio.out_qs[i]->bufs[j],
2867                                         QETH_QDIO_BUF_EMPTY);
2868                 }
2869                 card->qdio.out_qs[i]->card = card;
2870                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2871                 card->qdio.out_qs[i]->do_pack = 0;
2872                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2873                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2874                 atomic_set(&card->qdio.out_qs[i]->state,
2875                            QETH_OUT_Q_UNLOCKED);
2876         }
2877         return 0;
2878 }
2879 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2880
2881 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2882 {
2883         switch (link_type) {
2884         case QETH_LINK_TYPE_HSTR:
2885                 return 2;
2886         default:
2887                 return 1;
2888         }
2889 }
2890
2891 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2892                 struct qeth_ipa_cmd *cmd, __u8 command,
2893                 enum qeth_prot_versions prot)
2894 {
2895         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2896         cmd->hdr.command = command;
2897         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2898         cmd->hdr.seqno = card->seqno.ipa;
2899         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2900         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2901         if (card->options.layer2)
2902                 cmd->hdr.prim_version_no = 2;
2903         else
2904                 cmd->hdr.prim_version_no = 1;
2905         cmd->hdr.param_count = 1;
2906         cmd->hdr.prot_version = prot;
2907         cmd->hdr.ipa_supported = 0;
2908         cmd->hdr.ipa_enabled = 0;
2909 }
2910
2911 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2912                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2913 {
2914         struct qeth_cmd_buffer *iob;
2915         struct qeth_ipa_cmd *cmd;
2916
2917         iob = qeth_wait_for_buffer(&card->write);
2918         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2919         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2920
2921         return iob;
2922 }
2923 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2924
2925 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2926                 char prot_type)
2927 {
2928         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2929         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2930         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2931                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2932 }
2933 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2934
2935 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2936                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2937                         unsigned long),
2938                 void *reply_param)
2939 {
2940         int rc;
2941         char prot_type;
2942
2943         QETH_CARD_TEXT(card, 4, "sendipa");
2944
2945         if (card->options.layer2)
2946                 if (card->info.type == QETH_CARD_TYPE_OSN)
2947                         prot_type = QETH_PROT_OSN2;
2948                 else
2949                         prot_type = QETH_PROT_LAYER2;
2950         else
2951                 prot_type = QETH_PROT_TCPIP;
2952         qeth_prepare_ipa_cmd(card, iob, prot_type);
2953         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2954                                                 iob, reply_cb, reply_param);
2955         if (rc == -ETIME) {
2956                 qeth_clear_ipacmd_list(card);
2957                 qeth_schedule_recovery(card);
2958         }
2959         return rc;
2960 }
2961 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2962
2963 int qeth_send_startlan(struct qeth_card *card)
2964 {
2965         int rc;
2966         struct qeth_cmd_buffer *iob;
2967
2968         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2969
2970         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2971         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2972         return rc;
2973 }
2974 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2975
2976 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2977                 struct qeth_reply *reply, unsigned long data)
2978 {
2979         struct qeth_ipa_cmd *cmd;
2980
2981         QETH_CARD_TEXT(card, 4, "defadpcb");
2982
2983         cmd = (struct qeth_ipa_cmd *) data;
2984         if (cmd->hdr.return_code == 0)
2985                 cmd->hdr.return_code =
2986                         cmd->data.setadapterparms.hdr.return_code;
2987         return 0;
2988 }
2989
2990 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2991                 struct qeth_reply *reply, unsigned long data)
2992 {
2993         struct qeth_ipa_cmd *cmd;
2994
2995         QETH_CARD_TEXT(card, 3, "quyadpcb");
2996
2997         cmd = (struct qeth_ipa_cmd *) data;
2998         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2999                 card->info.link_type =
3000                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3001                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3002         }
3003         card->options.adp.supported_funcs =
3004                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3005         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3006 }
3007
3008 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3009                 __u32 command, __u32 cmdlen)
3010 {
3011         struct qeth_cmd_buffer *iob;
3012         struct qeth_ipa_cmd *cmd;
3013
3014         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3015                                      QETH_PROT_IPV4);
3016         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3017         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3018         cmd->data.setadapterparms.hdr.command_code = command;
3019         cmd->data.setadapterparms.hdr.used_total = 1;
3020         cmd->data.setadapterparms.hdr.seq_no = 1;
3021
3022         return iob;
3023 }
3024
3025 int qeth_query_setadapterparms(struct qeth_card *card)
3026 {
3027         int rc;
3028         struct qeth_cmd_buffer *iob;
3029
3030         QETH_CARD_TEXT(card, 3, "queryadp");
3031         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3032                                    sizeof(struct qeth_ipacmd_setadpparms));
3033         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3034         return rc;
3035 }
3036 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3037
3038 static int qeth_query_ipassists_cb(struct qeth_card *card,
3039                 struct qeth_reply *reply, unsigned long data)
3040 {
3041         struct qeth_ipa_cmd *cmd;
3042
3043         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3044
3045         cmd = (struct qeth_ipa_cmd *) data;
3046
3047         switch (cmd->hdr.return_code) {
3048         case IPA_RC_NOTSUPP:
3049         case IPA_RC_L2_UNSUPPORTED_CMD:
3050                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3051                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3052                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3053                 return -0;
3054         default:
3055                 if (cmd->hdr.return_code) {
3056                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3057                                                 "rc=%d\n",
3058                                                 dev_name(&card->gdev->dev),
3059                                                 cmd->hdr.return_code);
3060                         return 0;
3061                 }
3062         }
3063
3064         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3065                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3066                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3067         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3068                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3069                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3070         } else
3071                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3072                                         "\n", dev_name(&card->gdev->dev));
3073         return 0;
3074 }
3075
3076 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3077 {
3078         int rc;
3079         struct qeth_cmd_buffer *iob;
3080
3081         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3082         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3083         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3084         return rc;
3085 }
3086 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3087
3088 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3089                                 struct qeth_reply *reply, unsigned long data)
3090 {
3091         struct qeth_ipa_cmd *cmd;
3092         struct qeth_switch_info *sw_info;
3093         struct qeth_query_switch_attributes *attrs;
3094
3095         QETH_CARD_TEXT(card, 2, "qswiatcb");
3096         cmd = (struct qeth_ipa_cmd *) data;
3097         sw_info = (struct qeth_switch_info *)reply->param;
3098         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3099                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3100                 sw_info->capabilities = attrs->capabilities;
3101                 sw_info->settings = attrs->settings;
3102                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3103                                                         sw_info->settings);
3104         }
3105         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3106
3107         return 0;
3108 }
3109
3110 int qeth_query_switch_attributes(struct qeth_card *card,
3111                                  struct qeth_switch_info *sw_info)
3112 {
3113         struct qeth_cmd_buffer *iob;
3114
3115         QETH_CARD_TEXT(card, 2, "qswiattr");
3116         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3117                 return -EOPNOTSUPP;
3118         if (!netif_carrier_ok(card->dev))
3119                 return -ENOMEDIUM;
3120         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3121                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3122         return qeth_send_ipa_cmd(card, iob,
3123                                 qeth_query_switch_attributes_cb, sw_info);
3124 }
3125 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3126
3127 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3128                 struct qeth_reply *reply, unsigned long data)
3129 {
3130         struct qeth_ipa_cmd *cmd;
3131         __u16 rc;
3132
3133         cmd = (struct qeth_ipa_cmd *)data;
3134         rc = cmd->hdr.return_code;
3135         if (rc)
3136                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3137         else
3138                 card->info.diagass_support = cmd->data.diagass.ext;
3139         return 0;
3140 }
3141
3142 static int qeth_query_setdiagass(struct qeth_card *card)
3143 {
3144         struct qeth_cmd_buffer *iob;
3145         struct qeth_ipa_cmd    *cmd;
3146
3147         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3148         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3149         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3150         cmd->data.diagass.subcmd_len = 16;
3151         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3152         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3153 }
3154
3155 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3156 {
3157         unsigned long info = get_zeroed_page(GFP_KERNEL);
3158         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3159         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3160         struct ccw_dev_id ccwid;
3161         int level;
3162
3163         tid->chpid = card->info.chpid;
3164         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3165         tid->ssid = ccwid.ssid;
3166         tid->devno = ccwid.devno;
3167         if (!info)
3168                 return;
3169         level = stsi(NULL, 0, 0, 0);
3170         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3171                 tid->lparnr = info222->lpar_number;
3172         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3173                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3174                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3175         }
3176         free_page(info);
3177         return;
3178 }
3179
3180 static int qeth_hw_trap_cb(struct qeth_card *card,
3181                 struct qeth_reply *reply, unsigned long data)
3182 {
3183         struct qeth_ipa_cmd *cmd;
3184         __u16 rc;
3185
3186         cmd = (struct qeth_ipa_cmd *)data;
3187         rc = cmd->hdr.return_code;
3188         if (rc)
3189                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3190         return 0;
3191 }
3192
3193 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3194 {
3195         struct qeth_cmd_buffer *iob;
3196         struct qeth_ipa_cmd *cmd;
3197
3198         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3199         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3200         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3201         cmd->data.diagass.subcmd_len = 80;
3202         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3203         cmd->data.diagass.type = 1;
3204         cmd->data.diagass.action = action;
3205         switch (action) {
3206         case QETH_DIAGS_TRAP_ARM:
3207                 cmd->data.diagass.options = 0x0003;
3208                 cmd->data.diagass.ext = 0x00010000 +
3209                         sizeof(struct qeth_trap_id);
3210                 qeth_get_trap_id(card,
3211                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3212                 break;
3213         case QETH_DIAGS_TRAP_DISARM:
3214                 cmd->data.diagass.options = 0x0001;
3215                 break;
3216         case QETH_DIAGS_TRAP_CAPTURE:
3217                 break;
3218         }
3219         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3220 }
3221 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3222
3223 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3224                 unsigned int qdio_error, const char *dbftext)
3225 {
3226         if (qdio_error) {
3227                 QETH_CARD_TEXT(card, 2, dbftext);
3228                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3229                                buf->element[15].sflags);
3230                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3231                                buf->element[14].sflags);
3232                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3233                 if ((buf->element[15].sflags) == 0x12) {
3234                         card->stats.rx_dropped++;
3235                         return 0;
3236                 } else
3237                         return 1;
3238         }
3239         return 0;
3240 }
3241 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3242
3243 static void qeth_buffer_reclaim_work(struct work_struct *work)
3244 {
3245         struct qeth_card *card = container_of(work, struct qeth_card,
3246                 buffer_reclaim_work.work);
3247
3248         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3249         qeth_queue_input_buffer(card, card->reclaim_index);
3250 }
3251
3252 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3253 {
3254         struct qeth_qdio_q *queue = card->qdio.in_q;
3255         struct list_head *lh;
3256         int count;
3257         int i;
3258         int rc;
3259         int newcount = 0;
3260
3261         count = (index < queue->next_buf_to_init)?
3262                 card->qdio.in_buf_pool.buf_count -
3263                 (queue->next_buf_to_init - index) :
3264                 card->qdio.in_buf_pool.buf_count -
3265                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3266         /* only requeue at a certain threshold to avoid SIGAs */
3267         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3268                 for (i = queue->next_buf_to_init;
3269                      i < queue->next_buf_to_init + count; ++i) {
3270                         if (qeth_init_input_buffer(card,
3271                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3272                                 break;
3273                         } else {
3274                                 newcount++;
3275                         }
3276                 }
3277
3278                 if (newcount < count) {
3279                         /* we are in memory shortage so we switch back to
3280                            traditional skb allocation and drop packages */
3281                         atomic_set(&card->force_alloc_skb, 3);
3282                         count = newcount;
3283                 } else {
3284                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3285                 }
3286
3287                 if (!count) {
3288                         i = 0;
3289                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3290                                 i++;
3291                         if (i == card->qdio.in_buf_pool.buf_count) {
3292                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3293                                 card->reclaim_index = index;
3294                                 schedule_delayed_work(
3295                                         &card->buffer_reclaim_work,
3296                                         QETH_RECLAIM_WORK_TIME);
3297                         }
3298                         return;
3299                 }
3300
3301                 /*
3302                  * according to old code it should be avoided to requeue all
3303                  * 128 buffers in order to benefit from PCI avoidance.
3304                  * this function keeps at least one buffer (the buffer at
3305                  * 'index') un-requeued -> this buffer is the first buffer that
3306                  * will be requeued the next time
3307                  */
3308                 if (card->options.performance_stats) {
3309                         card->perf_stats.inbound_do_qdio_cnt++;
3310                         card->perf_stats.inbound_do_qdio_start_time =
3311                                 qeth_get_micros();
3312                 }
3313                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3314                              queue->next_buf_to_init, count);
3315                 if (card->options.performance_stats)
3316                         card->perf_stats.inbound_do_qdio_time +=
3317                                 qeth_get_micros() -
3318                                 card->perf_stats.inbound_do_qdio_start_time;
3319                 if (rc) {
3320                         QETH_CARD_TEXT(card, 2, "qinberr");
3321                 }
3322                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3323                                           QDIO_MAX_BUFFERS_PER_Q;
3324         }
3325 }
3326 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3327
3328 static int qeth_handle_send_error(struct qeth_card *card,
3329                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3330 {
3331         int sbalf15 = buffer->buffer->element[15].sflags;
3332
3333         QETH_CARD_TEXT(card, 6, "hdsnderr");
3334         if (card->info.type == QETH_CARD_TYPE_IQD) {
3335                 if (sbalf15 == 0) {
3336                         qdio_err = 0;
3337                 } else {
3338                         qdio_err = 1;
3339                 }
3340         }
3341         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3342
3343         if (!qdio_err)
3344                 return QETH_SEND_ERROR_NONE;
3345
3346         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3347                 return QETH_SEND_ERROR_RETRY;
3348
3349         QETH_CARD_TEXT(card, 1, "lnkfail");
3350         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3351                        (u16)qdio_err, (u8)sbalf15);
3352         return QETH_SEND_ERROR_LINK_FAILURE;
3353 }
3354
3355 /*
3356  * Switched to packing state if the number of used buffers on a queue
3357  * reaches a certain limit.
3358  */
3359 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3360 {
3361         if (!queue->do_pack) {
3362                 if (atomic_read(&queue->used_buffers)
3363                     >= QETH_HIGH_WATERMARK_PACK){
3364                         /* switch non-PACKING -> PACKING */
3365                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3366                         if (queue->card->options.performance_stats)
3367                                 queue->card->perf_stats.sc_dp_p++;
3368                         queue->do_pack = 1;
3369                 }
3370         }
3371 }
3372
3373 /*
3374  * Switches from packing to non-packing mode. If there is a packing
3375  * buffer on the queue this buffer will be prepared to be flushed.
3376  * In that case 1 is returned to inform the caller. If no buffer
3377  * has to be flushed, zero is returned.
3378  */
3379 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3380 {
3381         struct qeth_qdio_out_buffer *buffer;
3382         int flush_count = 0;
3383
3384         if (queue->do_pack) {
3385                 if (atomic_read(&queue->used_buffers)
3386                     <= QETH_LOW_WATERMARK_PACK) {
3387                         /* switch PACKING -> non-PACKING */
3388                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3389                         if (queue->card->options.performance_stats)
3390                                 queue->card->perf_stats.sc_p_dp++;
3391                         queue->do_pack = 0;
3392                         /* flush packing buffers */
3393                         buffer = queue->bufs[queue->next_buf_to_fill];
3394                         if ((atomic_read(&buffer->state) ==
3395                                                 QETH_QDIO_BUF_EMPTY) &&
3396                             (buffer->next_element_to_fill > 0)) {
3397                                 atomic_set(&buffer->state,
3398                                            QETH_QDIO_BUF_PRIMED);
3399                                 flush_count++;
3400                                 queue->next_buf_to_fill =
3401                                         (queue->next_buf_to_fill + 1) %
3402                                         QDIO_MAX_BUFFERS_PER_Q;
3403                         }
3404                 }
3405         }
3406         return flush_count;
3407 }
3408
3409
3410 /*
3411  * Called to flush a packing buffer if no more pci flags are on the queue.
3412  * Checks if there is a packing buffer and prepares it to be flushed.
3413  * In that case returns 1, otherwise zero.
3414  */
3415 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3416 {
3417         struct qeth_qdio_out_buffer *buffer;
3418
3419         buffer = queue->bufs[queue->next_buf_to_fill];
3420         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3421            (buffer->next_element_to_fill > 0)) {
3422                 /* it's a packing buffer */
3423                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3424                 queue->next_buf_to_fill =
3425                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3426                 return 1;
3427         }
3428         return 0;
3429 }
3430
3431 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3432                                int count)
3433 {
3434         struct qeth_qdio_out_buffer *buf;
3435         int rc;
3436         int i;
3437         unsigned int qdio_flags;
3438
3439         for (i = index; i < index + count; ++i) {
3440                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3441                 buf = queue->bufs[bidx];
3442                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3443                                 SBAL_EFLAGS_LAST_ENTRY;
3444
3445                 if (queue->bufstates)
3446                         queue->bufstates[bidx].user = buf;
3447
3448                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3449                         continue;
3450
3451                 if (!queue->do_pack) {
3452                         if ((atomic_read(&queue->used_buffers) >=
3453                                 (QETH_HIGH_WATERMARK_PACK -
3454                                  QETH_WATERMARK_PACK_FUZZ)) &&
3455                             !atomic_read(&queue->set_pci_flags_count)) {
3456                                 /* it's likely that we'll go to packing
3457                                  * mode soon */
3458                                 atomic_inc(&queue->set_pci_flags_count);
3459                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3460                         }
3461                 } else {
3462                         if (!atomic_read(&queue->set_pci_flags_count)) {
3463                                 /*
3464                                  * there's no outstanding PCI any more, so we
3465                                  * have to request a PCI to be sure the the PCI
3466                                  * will wake at some time in the future then we
3467                                  * can flush packed buffers that might still be
3468                                  * hanging around, which can happen if no
3469                                  * further send was requested by the stack
3470                                  */
3471                                 atomic_inc(&queue->set_pci_flags_count);
3472                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3473                         }
3474                 }
3475         }
3476
3477         queue->card->dev->trans_start = jiffies;
3478         if (queue->card->options.performance_stats) {
3479                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3480                 queue->card->perf_stats.outbound_do_qdio_start_time =
3481                         qeth_get_micros();
3482         }
3483         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3484         if (atomic_read(&queue->set_pci_flags_count))
3485                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3486         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3487                      queue->queue_no, index, count);
3488         if (queue->card->options.performance_stats)
3489                 queue->card->perf_stats.outbound_do_qdio_time +=
3490                         qeth_get_micros() -
3491                         queue->card->perf_stats.outbound_do_qdio_start_time;
3492         atomic_add(count, &queue->used_buffers);
3493         if (rc) {
3494                 queue->card->stats.tx_errors += count;
3495                 /* ignore temporary SIGA errors without busy condition */
3496                 if (rc == -ENOBUFS)
3497                         return;
3498                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3499                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3500                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3501                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3502                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3503
3504                 /* this must not happen under normal circumstances. if it
3505                  * happens something is really wrong -> recover */
3506                 qeth_schedule_recovery(queue->card);
3507                 return;
3508         }
3509         if (queue->card->options.performance_stats)
3510                 queue->card->perf_stats.bufs_sent += count;
3511 }
3512
3513 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3514 {
3515         int index;
3516         int flush_cnt = 0;
3517         int q_was_packing = 0;
3518
3519         /*
3520          * check if weed have to switch to non-packing mode or if
3521          * we have to get a pci flag out on the queue
3522          */
3523         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3524             !atomic_read(&queue->set_pci_flags_count)) {
3525                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3526                                 QETH_OUT_Q_UNLOCKED) {
3527                         /*
3528                          * If we get in here, there was no action in
3529                          * do_send_packet. So, we check if there is a
3530                          * packing buffer to be flushed here.
3531                          */
3532                         netif_stop_queue(queue->card->dev);
3533                         index = queue->next_buf_to_fill;
3534                         q_was_packing = queue->do_pack;
3535                         /* queue->do_pack may change */
3536                         barrier();
3537                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3538                         if (!flush_cnt &&
3539                             !atomic_read(&queue->set_pci_flags_count))
3540                                 flush_cnt +=
3541                                         qeth_flush_buffers_on_no_pci(queue);
3542                         if (queue->card->options.performance_stats &&
3543                             q_was_packing)
3544                                 queue->card->perf_stats.bufs_sent_pack +=
3545                                         flush_cnt;
3546                         if (flush_cnt)
3547                                 qeth_flush_buffers(queue, index, flush_cnt);
3548                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3549                 }
3550         }
3551 }
3552
3553 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3554                 unsigned long card_ptr)
3555 {
3556         struct qeth_card *card = (struct qeth_card *)card_ptr;
3557
3558         if (card->dev && (card->dev->flags & IFF_UP))
3559                 napi_schedule(&card->napi);
3560 }
3561 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3562
3563 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3564 {
3565         int rc;
3566
3567         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3568                 rc = -1;
3569                 goto out;
3570         } else {
3571                 if (card->options.cq == cq) {
3572                         rc = 0;
3573                         goto out;
3574                 }
3575
3576                 if (card->state != CARD_STATE_DOWN &&
3577                     card->state != CARD_STATE_RECOVER) {
3578                         rc = -1;
3579                         goto out;
3580                 }
3581
3582                 qeth_free_qdio_buffers(card);
3583                 card->options.cq = cq;
3584                 rc = 0;
3585         }
3586 out:
3587         return rc;
3588
3589 }
3590 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3591
3592
3593 static void qeth_qdio_cq_handler(struct qeth_card *card,
3594                 unsigned int qdio_err,
3595                 unsigned int queue, int first_element, int count) {
3596         struct qeth_qdio_q *cq = card->qdio.c_q;
3597         int i;
3598         int rc;
3599
3600         if (!qeth_is_cq(card, queue))
3601                 goto out;
3602
3603         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3604         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3605         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3606
3607         if (qdio_err) {
3608                 netif_stop_queue(card->dev);
3609                 qeth_schedule_recovery(card);
3610                 goto out;
3611         }
3612
3613         if (card->options.performance_stats) {
3614                 card->perf_stats.cq_cnt++;
3615                 card->perf_stats.cq_start_time = qeth_get_micros();
3616         }
3617
3618         for (i = first_element; i < first_element + count; ++i) {
3619                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3620                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3621                 int e;
3622
3623                 e = 0;
3624                 while (buffer->element[e].addr) {
3625                         unsigned long phys_aob_addr;
3626
3627                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3628                         qeth_qdio_handle_aob(card, phys_aob_addr);
3629                         buffer->element[e].addr = NULL;
3630                         buffer->element[e].eflags = 0;
3631                         buffer->element[e].sflags = 0;
3632                         buffer->element[e].length = 0;
3633
3634                         ++e;
3635                 }
3636
3637                 buffer->element[15].eflags = 0;
3638                 buffer->element[15].sflags = 0;
3639         }
3640         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3641                     card->qdio.c_q->next_buf_to_init,
3642                     count);
3643         if (rc) {
3644                 dev_warn(&card->gdev->dev,
3645                         "QDIO reported an error, rc=%i\n", rc);
3646                 QETH_CARD_TEXT(card, 2, "qcqherr");
3647         }
3648         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3649                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3650
3651         netif_wake_queue(card->dev);
3652
3653         if (card->options.performance_stats) {
3654                 int delta_t = qeth_get_micros();
3655                 delta_t -= card->perf_stats.cq_start_time;
3656                 card->perf_stats.cq_time += delta_t;
3657         }
3658 out:
3659         return;
3660 }
3661
3662 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3663                 unsigned int queue, int first_elem, int count,
3664                 unsigned long card_ptr)
3665 {
3666         struct qeth_card *card = (struct qeth_card *)card_ptr;
3667
3668         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3669         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3670
3671         if (qeth_is_cq(card, queue))
3672                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3673         else if (qdio_err)
3674                 qeth_schedule_recovery(card);
3675
3676
3677 }
3678 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3679
3680 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3681                 unsigned int qdio_error, int __queue, int first_element,
3682                 int count, unsigned long card_ptr)
3683 {
3684         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3685         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3686         struct qeth_qdio_out_buffer *buffer;
3687         int i;
3688
3689         QETH_CARD_TEXT(card, 6, "qdouhdl");
3690         if (qdio_error & QDIO_ERROR_FATAL) {
3691                 QETH_CARD_TEXT(card, 2, "achkcond");
3692                 netif_stop_queue(card->dev);
3693                 qeth_schedule_recovery(card);
3694                 return;
3695         }
3696         if (card->options.performance_stats) {
3697                 card->perf_stats.outbound_handler_cnt++;
3698                 card->perf_stats.outbound_handler_start_time =
3699                         qeth_get_micros();
3700         }
3701         for (i = first_element; i < (first_element + count); ++i) {
3702                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3703                 buffer = queue->bufs[bidx];
3704                 qeth_handle_send_error(card, buffer, qdio_error);
3705
3706                 if (queue->bufstates &&
3707                     (queue->bufstates[bidx].flags &
3708                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3709                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3710
3711                         if (atomic_cmpxchg(&buffer->state,
3712                                            QETH_QDIO_BUF_PRIMED,
3713                                            QETH_QDIO_BUF_PENDING) ==
3714                                 QETH_QDIO_BUF_PRIMED) {
3715                                 qeth_notify_skbs(queue, buffer,
3716                                                  TX_NOTIFY_PENDING);
3717                         }
3718                         buffer->aob = queue->bufstates[bidx].aob;
3719                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3720                         QETH_CARD_TEXT(queue->card, 5, "aob");
3721                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3722                                         virt_to_phys(buffer->aob));
3723                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3724                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3725                                 qeth_schedule_recovery(card);
3726                         }
3727                 } else {
3728                         if (card->options.cq == QETH_CQ_ENABLED) {
3729                                 enum iucv_tx_notify n;
3730
3731                                 n = qeth_compute_cq_notification(
3732                                         buffer->buffer->element[15].sflags, 0);
3733                                 qeth_notify_skbs(queue, buffer, n);
3734                         }
3735
3736                         qeth_clear_output_buffer(queue, buffer,
3737                                                 QETH_QDIO_BUF_EMPTY);
3738                 }
3739                 qeth_cleanup_handled_pending(queue, bidx, 0);
3740         }
3741         atomic_sub(count, &queue->used_buffers);
3742         /* check if we need to do something on this outbound queue */
3743         if (card->info.type != QETH_CARD_TYPE_IQD)
3744                 qeth_check_outbound_queue(queue);
3745
3746         netif_wake_queue(queue->card->dev);
3747         if (card->options.performance_stats)
3748                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3749                         card->perf_stats.outbound_handler_start_time;
3750 }
3751 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3752
3753 /**
3754  * Note: Function assumes that we have 4 outbound queues.
3755  */
3756 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3757                         int ipv, int cast_type)
3758 {
3759         __be16 *tci;
3760         u8 tos;
3761
3762         if (cast_type && card->info.is_multicast_different)
3763                 return card->info.is_multicast_different &
3764                         (card->qdio.no_out_queues - 1);
3765
3766         switch (card->qdio.do_prio_queueing) {
3767         case QETH_PRIO_Q_ING_TOS:
3768         case QETH_PRIO_Q_ING_PREC:
3769                 switch (ipv) {
3770                 case 4:
3771                         tos = ipv4_get_dsfield(ip_hdr(skb));
3772                         break;
3773                 case 6:
3774                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3775                         break;
3776                 default:
3777                         return card->qdio.default_out_queue;
3778                 }
3779                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3780                         return ~tos >> 6 & 3;
3781                 if (tos & IPTOS_MINCOST)
3782                         return 3;
3783                 if (tos & IPTOS_RELIABILITY)
3784                         return 2;
3785                 if (tos & IPTOS_THROUGHPUT)
3786                         return 1;
3787                 if (tos & IPTOS_LOWDELAY)
3788                         return 0;
3789                 break;
3790         case QETH_PRIO_Q_ING_SKB:
3791                 if (skb->priority > 5)
3792                         return 0;
3793                 return ~skb->priority >> 1 & 3;
3794         case QETH_PRIO_Q_ING_VLAN:
3795                 tci = &((struct ethhdr *)skb->data)->h_proto;
3796                 if (*tci == ETH_P_8021Q)
3797                         return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3798                 break;
3799         default:
3800                 break;
3801         }
3802         return card->qdio.default_out_queue;
3803 }
3804 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3805
3806 int qeth_get_elements_for_frags(struct sk_buff *skb)
3807 {
3808         int cnt, length, e, elements = 0;
3809         struct skb_frag_struct *frag;
3810         char *data;
3811
3812         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3813                 frag = &skb_shinfo(skb)->frags[cnt];
3814                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3815                         frag->page_offset;
3816                 length = frag->size;
3817                 e = PFN_UP((unsigned long)data + length - 1) -
3818                         PFN_DOWN((unsigned long)data);
3819                 elements += e;
3820         }
3821         return elements;
3822 }
3823 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3824
3825 int qeth_get_elements_no(struct qeth_card *card,
3826                      struct sk_buff *skb, int elems)
3827 {
3828         int dlen = skb->len - skb->data_len;
3829         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3830                 PFN_DOWN((unsigned long)skb->data);
3831
3832         elements_needed += qeth_get_elements_for_frags(skb);
3833
3834         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3835                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3836                         "(Number=%d / Length=%d). Discarded.\n",
3837                         (elements_needed+elems), skb->len);
3838                 return 0;
3839         }
3840         return elements_needed;
3841 }
3842 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3843
3844 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3845 {
3846         int hroom, inpage, rest;
3847
3848         if (((unsigned long)skb->data & PAGE_MASK) !=
3849             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3850                 hroom = skb_headroom(skb);
3851                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3852                 rest = len - inpage;
3853                 if (rest > hroom)
3854                         return 1;
3855                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3856                 skb->data -= rest;
3857                 skb->tail -= rest;
3858                 *hdr = (struct qeth_hdr *)skb->data;
3859                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3860         }
3861         return 0;
3862 }
3863 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3864
3865 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3866         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3867         int offset)
3868 {
3869         int length = skb->len - skb->data_len;
3870         int length_here;
3871         int element;
3872         char *data;
3873         int first_lap, cnt;
3874         struct skb_frag_struct *frag;
3875
3876         element = *next_element_to_fill;
3877         data = skb->data;
3878         first_lap = (is_tso == 0 ? 1 : 0);
3879
3880         if (offset >= 0) {
3881                 data = skb->data + offset;
3882                 length -= offset;
3883                 first_lap = 0;
3884         }
3885
3886         while (length > 0) {
3887                 /* length_here is the remaining amount of data in this page */
3888                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3889                 if (length < length_here)
3890                         length_here = length;
3891
3892                 buffer->element[element].addr = data;
3893                 buffer->element[element].length = length_here;
3894                 length -= length_here;
3895                 if (!length) {
3896                         if (first_lap)
3897                                 if (skb_shinfo(skb)->nr_frags)
3898                                         buffer->element[element].eflags =
3899                                                 SBAL_EFLAGS_FIRST_FRAG;
3900                                 else
3901                                         buffer->element[element].eflags = 0;
3902                         else
3903                                 buffer->element[element].eflags =
3904                                     SBAL_EFLAGS_MIDDLE_FRAG;
3905                 } else {
3906                         if (first_lap)
3907                                 buffer->element[element].eflags =
3908                                     SBAL_EFLAGS_FIRST_FRAG;
3909                         else
3910                                 buffer->element[element].eflags =
3911                                     SBAL_EFLAGS_MIDDLE_FRAG;
3912                 }
3913                 data += length_here;
3914                 element++;
3915                 first_lap = 0;
3916         }
3917
3918         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3919                 frag = &skb_shinfo(skb)->frags[cnt];
3920                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3921                         frag->page_offset;
3922                 length = frag->size;
3923                 while (length > 0) {
3924                         length_here = PAGE_SIZE -
3925                                 ((unsigned long) data % PAGE_SIZE);
3926                         if (length < length_here)
3927                                 length_here = length;
3928
3929                         buffer->element[element].addr = data;
3930                         buffer->element[element].length = length_here;
3931                         buffer->element[element].eflags =
3932                                 SBAL_EFLAGS_MIDDLE_FRAG;
3933                         length -= length_here;
3934                         data += length_here;
3935                         element++;
3936                 }
3937         }
3938
3939         if (buffer->element[element - 1].eflags)
3940                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3941         *next_element_to_fill = element;
3942 }
3943
3944 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3945                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3946                 struct qeth_hdr *hdr, int offset, int hd_len)
3947 {
3948         struct qdio_buffer *buffer;
3949         int flush_cnt = 0, hdr_len, large_send = 0;
3950
3951         buffer = buf->buffer;
3952         atomic_inc(&skb->users);
3953         skb_queue_tail(&buf->skb_list, skb);
3954
3955         /*check first on TSO ....*/
3956         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3957                 int element = buf->next_element_to_fill;
3958
3959                 hdr_len = sizeof(struct qeth_hdr_tso) +
3960                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3961                 /*fill first buffer entry only with header information */
3962                 buffer->element[element].addr = skb->data;
3963                 buffer->element[element].length = hdr_len;
3964                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3965                 buf->next_element_to_fill++;
3966                 skb->data += hdr_len;
3967                 skb->len  -= hdr_len;
3968                 large_send = 1;
3969         }
3970
3971         if (offset >= 0) {
3972                 int element = buf->next_element_to_fill;
3973                 buffer->element[element].addr = hdr;
3974                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3975                                                         hd_len;
3976                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3977                 buf->is_header[element] = 1;
3978                 buf->next_element_to_fill++;
3979         }
3980
3981         __qeth_fill_buffer(skb, buffer, large_send,
3982                 (int *)&buf->next_element_to_fill, offset);
3983
3984         if (!queue->do_pack) {
3985                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3986                 /* set state to PRIMED -> will be flushed */
3987                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3988                 flush_cnt = 1;
3989         } else {
3990                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3991                 if (queue->card->options.performance_stats)
3992                         queue->card->perf_stats.skbs_sent_pack++;
3993                 if (buf->next_element_to_fill >=
3994                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3995                         /*
3996                          * packed buffer if full -> set state PRIMED
3997                          * -> will be flushed
3998                          */
3999                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4000                         flush_cnt = 1;
4001                 }
4002         }
4003         return flush_cnt;
4004 }
4005
4006 int qeth_do_send_packet_fast(struct qeth_card *card,
4007                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4008                 struct qeth_hdr *hdr, int elements_needed,
4009                 int offset, int hd_len)
4010 {
4011         struct qeth_qdio_out_buffer *buffer;
4012         int index;
4013
4014         /* spin until we get the queue ... */
4015         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4016                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4017         /* ... now we've got the queue */
4018         index = queue->next_buf_to_fill;
4019         buffer = queue->bufs[queue->next_buf_to_fill];
4020         /*
4021          * check if buffer is empty to make sure that we do not 'overtake'
4022          * ourselves and try to fill a buffer that is already primed
4023          */
4024         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4025                 goto out;
4026         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4027                                           QDIO_MAX_BUFFERS_PER_Q;
4028         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4029         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4030         qeth_flush_buffers(queue, index, 1);
4031         return 0;
4032 out:
4033         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4034         return -EBUSY;
4035 }
4036 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4037
4038 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4039                 struct sk_buff *skb, struct qeth_hdr *hdr,
4040                 int elements_needed)
4041 {
4042         struct qeth_qdio_out_buffer *buffer;
4043         int start_index;
4044         int flush_count = 0;
4045         int do_pack = 0;
4046         int tmp;
4047         int rc = 0;
4048
4049         /* spin until we get the queue ... */
4050         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4051                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4052         start_index = queue->next_buf_to_fill;
4053         buffer = queue->bufs[queue->next_buf_to_fill];
4054         /*
4055          * check if buffer is empty to make sure that we do not 'overtake'
4056          * ourselves and try to fill a buffer that is already primed
4057          */
4058         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4059                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4060                 return -EBUSY;
4061         }
4062         /* check if we need to switch packing state of this queue */
4063         qeth_switch_to_packing_if_needed(queue);
4064         if (queue->do_pack) {
4065                 do_pack = 1;
4066                 /* does packet fit in current buffer? */
4067                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4068                     buffer->next_element_to_fill) < elements_needed) {
4069                         /* ... no -> set state PRIMED */
4070                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4071                         flush_count++;
4072                         queue->next_buf_to_fill =
4073                                 (queue->next_buf_to_fill + 1) %
4074                                 QDIO_MAX_BUFFERS_PER_Q;
4075                         buffer = queue->bufs[queue->next_buf_to_fill];
4076                         /* we did a step forward, so check buffer state
4077                          * again */
4078                         if (atomic_read(&buffer->state) !=
4079                             QETH_QDIO_BUF_EMPTY) {
4080                                 qeth_flush_buffers(queue, start_index,
4081                                                            flush_count);
4082                                 atomic_set(&queue->state,
4083                                                 QETH_OUT_Q_UNLOCKED);
4084                                 return -EBUSY;
4085                         }
4086                 }
4087         }
4088         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4089         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4090                                   QDIO_MAX_BUFFERS_PER_Q;
4091         flush_count += tmp;
4092         if (flush_count)
4093                 qeth_flush_buffers(queue, start_index, flush_count);
4094         else if (!atomic_read(&queue->set_pci_flags_count))
4095                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4096         /*
4097          * queue->state will go from LOCKED -> UNLOCKED or from
4098          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4099          * (switch packing state or flush buffer to get another pci flag out).
4100          * In that case we will enter this loop
4101          */
4102         while (atomic_dec_return(&queue->state)) {
4103                 flush_count = 0;
4104                 start_index = queue->next_buf_to_fill;
4105                 /* check if we can go back to non-packing state */
4106                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4107                 /*
4108                  * check if we need to flush a packing buffer to get a pci
4109                  * flag out on the queue
4110                  */
4111                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4112                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4113                 if (flush_count)
4114                         qeth_flush_buffers(queue, start_index, flush_count);
4115         }
4116         /* at this point the queue is UNLOCKED again */
4117         if (queue->card->options.performance_stats && do_pack)
4118                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4119
4120         return rc;
4121 }
4122 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4123
4124 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4125                 struct qeth_reply *reply, unsigned long data)
4126 {
4127         struct qeth_ipa_cmd *cmd;
4128         struct qeth_ipacmd_setadpparms *setparms;
4129
4130         QETH_CARD_TEXT(card, 4, "prmadpcb");
4131
4132         cmd = (struct qeth_ipa_cmd *) data;
4133         setparms = &(cmd->data.setadapterparms);
4134
4135         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4136         if (cmd->hdr.return_code) {
4137                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4138                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4139         }
4140         card->info.promisc_mode = setparms->data.mode;
4141         return 0;
4142 }
4143
4144 void qeth_setadp_promisc_mode(struct qeth_card *card)
4145 {
4146         enum qeth_ipa_promisc_modes mode;
4147         struct net_device *dev = card->dev;
4148         struct qeth_cmd_buffer *iob;
4149         struct qeth_ipa_cmd *cmd;
4150
4151         QETH_CARD_TEXT(card, 4, "setprom");
4152
4153         if (((dev->flags & IFF_PROMISC) &&
4154              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4155             (!(dev->flags & IFF_PROMISC) &&
4156              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4157                 return;
4158         mode = SET_PROMISC_MODE_OFF;
4159         if (dev->flags & IFF_PROMISC)
4160                 mode = SET_PROMISC_MODE_ON;
4161         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4162
4163         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4164                         sizeof(struct qeth_ipacmd_setadpparms));
4165         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4166         cmd->data.setadapterparms.data.mode = mode;
4167         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4168 }
4169 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4170
4171 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4172 {
4173         struct qeth_card *card;
4174         char dbf_text[15];
4175
4176         card = dev->ml_priv;
4177
4178         QETH_CARD_TEXT(card, 4, "chgmtu");
4179         sprintf(dbf_text, "%8x", new_mtu);
4180         QETH_CARD_TEXT(card, 4, dbf_text);
4181
4182         if (new_mtu < 64)
4183                 return -EINVAL;
4184         if (new_mtu > 65535)
4185                 return -EINVAL;
4186         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4187             (!qeth_mtu_is_valid(card, new_mtu)))
4188                 return -EINVAL;
4189         dev->mtu = new_mtu;
4190         return 0;
4191 }
4192 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4193
4194 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4195 {
4196         struct qeth_card *card;
4197
4198         card = dev->ml_priv;
4199
4200         QETH_CARD_TEXT(card, 5, "getstat");
4201
4202         return &card->stats;
4203 }
4204 EXPORT_SYMBOL_GPL(qeth_get_stats);
4205
4206 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4207                 struct qeth_reply *reply, unsigned long data)
4208 {
4209         struct qeth_ipa_cmd *cmd;
4210
4211         QETH_CARD_TEXT(card, 4, "chgmaccb");
4212
4213         cmd = (struct qeth_ipa_cmd *) data;
4214         if (!card->options.layer2 ||
4215             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4216                 memcpy(card->dev->dev_addr,
4217                        &cmd->data.setadapterparms.data.change_addr.addr,
4218                        OSA_ADDR_LEN);
4219                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4220         }
4221         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4222         return 0;
4223 }
4224
4225 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4226 {
4227         int rc;
4228         struct qeth_cmd_buffer *iob;
4229         struct qeth_ipa_cmd *cmd;
4230
4231         QETH_CARD_TEXT(card, 4, "chgmac");
4232
4233         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4234                                    sizeof(struct qeth_ipacmd_setadpparms));
4235         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4236         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4237         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4238         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4239                card->dev->dev_addr, OSA_ADDR_LEN);
4240         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4241                                NULL);
4242         return rc;
4243 }
4244 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4245
4246 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4247                 struct qeth_reply *reply, unsigned long data)
4248 {
4249         struct qeth_ipa_cmd *cmd;
4250         struct qeth_set_access_ctrl *access_ctrl_req;
4251         int fallback = *(int *)reply->param;
4252
4253         QETH_CARD_TEXT(card, 4, "setaccb");
4254
4255         cmd = (struct qeth_ipa_cmd *) data;
4256         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4257         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4258         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4259         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4260                 cmd->data.setadapterparms.hdr.return_code);
4261         if (cmd->data.setadapterparms.hdr.return_code !=
4262                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4263                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4264                                 card->gdev->dev.kobj.name,
4265                                 access_ctrl_req->subcmd_code,
4266                                 cmd->data.setadapterparms.hdr.return_code);
4267         switch (cmd->data.setadapterparms.hdr.return_code) {
4268         case SET_ACCESS_CTRL_RC_SUCCESS:
4269                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4270                         dev_info(&card->gdev->dev,
4271                             "QDIO data connection isolation is deactivated\n");
4272                 } else {
4273                         dev_info(&card->gdev->dev,
4274                             "QDIO data connection isolation is activated\n");
4275                 }
4276                 break;
4277         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4278                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4279                                 "deactivated\n", dev_name(&card->gdev->dev));
4280                 if (fallback)
4281                         card->options.isolation = card->options.prev_isolation;
4282                 break;
4283         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4284                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4285                                 " activated\n", dev_name(&card->gdev->dev));
4286                 if (fallback)
4287                         card->options.isolation = card->options.prev_isolation;
4288                 break;
4289         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4290                 dev_err(&card->gdev->dev, "Adapter does not "
4291                         "support QDIO data connection isolation\n");
4292                 break;
4293         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4294                 dev_err(&card->gdev->dev,
4295                         "Adapter is dedicated. "
4296                         "QDIO data connection isolation not supported\n");
4297                 if (fallback)
4298                         card->options.isolation = card->options.prev_isolation;
4299                 break;
4300         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4301                 dev_err(&card->gdev->dev,
4302                         "TSO does not permit QDIO data connection isolation\n");
4303                 if (fallback)
4304                         card->options.isolation = card->options.prev_isolation;
4305                 break;
4306         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4307                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4308                         "support reflective relay mode\n");
4309                 if (fallback)
4310                         card->options.isolation = card->options.prev_isolation;
4311                 break;
4312         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4313                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4314                                         "enabled at the adjacent switch port");
4315                 if (fallback)
4316                         card->options.isolation = card->options.prev_isolation;
4317                 break;
4318         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4319                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4320                                         "at the adjacent switch failed\n");
4321                 break;
4322         default:
4323                 /* this should never happen */
4324                 if (fallback)
4325                         card->options.isolation = card->options.prev_isolation;
4326                 break;
4327         }
4328         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4329         return 0;
4330 }
4331
4332 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4333                 enum qeth_ipa_isolation_modes isolation, int fallback)
4334 {
4335         int rc;
4336         struct qeth_cmd_buffer *iob;
4337         struct qeth_ipa_cmd *cmd;
4338         struct qeth_set_access_ctrl *access_ctrl_req;
4339
4340         QETH_CARD_TEXT(card, 4, "setacctl");
4341
4342         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4343         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4344
4345         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4346                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4347                                    sizeof(struct qeth_set_access_ctrl));
4348         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4349         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4350         access_ctrl_req->subcmd_code = isolation;
4351
4352         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4353                                &fallback);
4354         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4355         return rc;
4356 }
4357
4358 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4359 {
4360         int rc = 0;
4361
4362         QETH_CARD_TEXT(card, 4, "setactlo");
4363
4364         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4365              card->info.type == QETH_CARD_TYPE_OSX) &&
4366              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4367                 rc = qeth_setadpparms_set_access_ctrl(card,
4368                         card->options.isolation, fallback);
4369                 if (rc) {
4370                         QETH_DBF_MESSAGE(3,
4371                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4372                                 card->gdev->dev.kobj.name,
4373                                 rc);
4374                         rc = -EOPNOTSUPP;
4375                 }
4376         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4377                 card->options.isolation = ISOLATION_MODE_NONE;
4378
4379                 dev_err(&card->gdev->dev, "Adapter does not "
4380                         "support QDIO data connection isolation\n");
4381                 rc = -EOPNOTSUPP;
4382         }
4383         return rc;
4384 }
4385 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4386
4387 void qeth_tx_timeout(struct net_device *dev)
4388 {
4389         struct qeth_card *card;
4390
4391         card = dev->ml_priv;
4392         QETH_CARD_TEXT(card, 4, "txtimeo");
4393         card->stats.tx_errors++;
4394         qeth_schedule_recovery(card);
4395 }
4396 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4397
4398 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4399 {
4400         struct qeth_card *card = dev->ml_priv;
4401         int rc = 0;
4402
4403         switch (regnum) {
4404         case MII_BMCR: /* Basic mode control register */
4405                 rc = BMCR_FULLDPLX;
4406                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4407                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4408                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4409                         rc |= BMCR_SPEED100;
4410                 break;
4411         case MII_BMSR: /* Basic mode status register */
4412                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4413                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4414                      BMSR_100BASE4;
4415                 break;
4416         case MII_PHYSID1: /* PHYS ID 1 */
4417                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4418                      dev->dev_addr[2];
4419                 rc = (rc >> 5) & 0xFFFF;
4420                 break;
4421         case MII_PHYSID2: /* PHYS ID 2 */
4422                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4423                 break;
4424         case MII_ADVERTISE: /* Advertisement control reg */
4425                 rc = ADVERTISE_ALL;
4426                 break;
4427         case MII_LPA: /* Link partner ability reg */
4428                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4429                      LPA_100BASE4 | LPA_LPACK;
4430                 break;
4431         case MII_EXPANSION: /* Expansion register */
4432                 break;
4433         case MII_DCOUNTER: /* disconnect counter */
4434                 break;
4435         case MII_FCSCOUNTER: /* false carrier counter */
4436                 break;
4437         case MII_NWAYTEST: /* N-way auto-neg test register */
4438                 break;
4439         case MII_RERRCOUNTER: /* rx error counter */
4440                 rc = card->stats.rx_errors;
4441                 break;
4442         case MII_SREVISION: /* silicon revision */
4443                 break;
4444         case MII_RESV1: /* reserved 1 */
4445                 break;
4446         case MII_LBRERROR: /* loopback, rx, bypass error */
4447                 break;
4448         case MII_PHYADDR: /* physical address */
4449                 break;
4450         case MII_RESV2: /* reserved 2 */
4451                 break;
4452         case MII_TPISTATUS: /* TPI status for 10mbps */
4453                 break;
4454         case MII_NCONFIG: /* network interface config */
4455                 break;
4456         default:
4457                 break;
4458         }
4459         return rc;
4460 }
4461 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4462
4463 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4464                 struct qeth_cmd_buffer *iob, int len,
4465                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4466                         unsigned long),
4467                 void *reply_param)
4468 {
4469         u16 s1, s2;
4470
4471         QETH_CARD_TEXT(card, 4, "sendsnmp");
4472
4473         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4474         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4475                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4476         /* adjust PDU length fields in IPA_PDU_HEADER */
4477         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4478         s2 = (u32) len;
4479         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4480         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4481         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4482         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4483         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4484                                       reply_cb, reply_param);
4485 }
4486
4487 static int qeth_snmp_command_cb(struct qeth_card *card,
4488                 struct qeth_reply *reply, unsigned long sdata)
4489 {
4490         struct qeth_ipa_cmd *cmd;
4491         struct qeth_arp_query_info *qinfo;
4492         struct qeth_snmp_cmd *snmp;
4493         unsigned char *data;
4494         __u16 data_len;
4495
4496         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4497
4498         cmd = (struct qeth_ipa_cmd *) sdata;
4499         data = (unsigned char *)((char *)cmd - reply->offset);
4500         qinfo = (struct qeth_arp_query_info *) reply->param;
4501         snmp = &cmd->data.setadapterparms.data.snmp;
4502
4503         if (cmd->hdr.return_code) {
4504                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4505                 return 0;
4506         }
4507         if (cmd->data.setadapterparms.hdr.return_code) {
4508                 cmd->hdr.return_code =
4509                         cmd->data.setadapterparms.hdr.return_code;
4510                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4511                 return 0;
4512         }
4513         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4514         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4515                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4516         else
4517                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4518
4519         /* check if there is enough room in userspace */
4520         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4521                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4522                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4523                 return 0;
4524         }
4525         QETH_CARD_TEXT_(card, 4, "snore%i",
4526                        cmd->data.setadapterparms.hdr.used_total);
4527         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4528                 cmd->data.setadapterparms.hdr.seq_no);
4529         /*copy entries to user buffer*/
4530         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4531                 memcpy(qinfo->udata + qinfo->udata_offset,
4532                        (char *)snmp,
4533                        data_len + offsetof(struct qeth_snmp_cmd, data));
4534                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4535         } else {
4536                 memcpy(qinfo->udata + qinfo->udata_offset,
4537                        (char *)&snmp->request, data_len);
4538         }
4539         qinfo->udata_offset += data_len;
4540         /* check if all replies received ... */
4541                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4542                                cmd->data.setadapterparms.hdr.used_total);
4543                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4544                                cmd->data.setadapterparms.hdr.seq_no);
4545         if (cmd->data.setadapterparms.hdr.seq_no <
4546             cmd->data.setadapterparms.hdr.used_total)
4547                 return 1;
4548         return 0;
4549 }
4550
4551 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4552 {
4553         struct qeth_cmd_buffer *iob;
4554         struct qeth_ipa_cmd *cmd;
4555         struct qeth_snmp_ureq *ureq;
4556         unsigned int req_len;
4557         struct qeth_arp_query_info qinfo = {0, };
4558         int rc = 0;
4559
4560         QETH_CARD_TEXT(card, 3, "snmpcmd");
4561
4562         if (card->info.guestlan)
4563                 return -EOPNOTSUPP;
4564
4565         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4566             (!card->options.layer2)) {
4567                 return -EOPNOTSUPP;
4568         }
4569         /* skip 4 bytes (data_len struct member) to get req_len */
4570         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4571                 return -EFAULT;
4572         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4573                        sizeof(struct qeth_ipacmd_hdr) -
4574                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4575                 return -EINVAL;
4576         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4577         if (IS_ERR(ureq)) {
4578                 QETH_CARD_TEXT(card, 2, "snmpnome");
4579                 return PTR_ERR(ureq);
4580         }
4581         qinfo.udata_len = ureq->hdr.data_len;
4582         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4583         if (!qinfo.udata) {
4584                 kfree(ureq);
4585                 return -ENOMEM;
4586         }
4587         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4588
4589         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4590                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4591         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4592         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4593         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4594                                     qeth_snmp_command_cb, (void *)&qinfo);
4595         if (rc)
4596                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4597                            QETH_CARD_IFNAME(card), rc);
4598         else {
4599                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4600                         rc = -EFAULT;
4601         }
4602
4603         kfree(ureq);
4604         kfree(qinfo.udata);
4605         return rc;
4606 }
4607 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4608
4609 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4610                 struct qeth_reply *reply, unsigned long data)
4611 {
4612         struct qeth_ipa_cmd *cmd;
4613         struct qeth_qoat_priv *priv;
4614         char *resdata;
4615         int resdatalen;
4616
4617         QETH_CARD_TEXT(card, 3, "qoatcb");
4618
4619         cmd = (struct qeth_ipa_cmd *)data;
4620         priv = (struct qeth_qoat_priv *)reply->param;
4621         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4622         resdata = (char *)data + 28;
4623
4624         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4625                 cmd->hdr.return_code = IPA_RC_FFFF;
4626                 return 0;
4627         }
4628
4629         memcpy((priv->buffer + priv->response_len), resdata,
4630                 resdatalen);
4631         priv->response_len += resdatalen;
4632
4633         if (cmd->data.setadapterparms.hdr.seq_no <
4634             cmd->data.setadapterparms.hdr.used_total)
4635                 return 1;
4636         return 0;
4637 }
4638
4639 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4640 {
4641         int rc = 0;
4642         struct qeth_cmd_buffer *iob;
4643         struct qeth_ipa_cmd *cmd;
4644         struct qeth_query_oat *oat_req;
4645         struct qeth_query_oat_data oat_data;
4646         struct qeth_qoat_priv priv;
4647         void __user *tmp;
4648
4649         QETH_CARD_TEXT(card, 3, "qoatcmd");
4650
4651         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4652                 rc = -EOPNOTSUPP;
4653                 goto out;
4654         }
4655
4656         if (copy_from_user(&oat_data, udata,
4657             sizeof(struct qeth_query_oat_data))) {
4658                         rc = -EFAULT;
4659                         goto out;
4660         }
4661
4662         priv.buffer_len = oat_data.buffer_len;
4663         priv.response_len = 0;
4664         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4665         if (!priv.buffer) {
4666                 rc = -ENOMEM;
4667                 goto out;
4668         }
4669
4670         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4671                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4672                                    sizeof(struct qeth_query_oat));
4673         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4674         oat_req = &cmd->data.setadapterparms.data.query_oat;
4675         oat_req->subcmd_code = oat_data.command;
4676
4677         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4678                                &priv);
4679         if (!rc) {
4680                 if (is_compat_task())
4681                         tmp = compat_ptr(oat_data.ptr);
4682                 else
4683                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4684
4685                 if (copy_to_user(tmp, priv.buffer,
4686                     priv.response_len)) {
4687                         rc = -EFAULT;
4688                         goto out_free;
4689                 }
4690
4691                 oat_data.response_len = priv.response_len;
4692
4693                 if (copy_to_user(udata, &oat_data,
4694                     sizeof(struct qeth_query_oat_data)))
4695                         rc = -EFAULT;
4696         } else
4697                 if (rc == IPA_RC_FFFF)
4698                         rc = -EFAULT;
4699
4700 out_free:
4701         kfree(priv.buffer);
4702 out:
4703         return rc;
4704 }
4705 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4706
4707 static int qeth_query_card_info_cb(struct qeth_card *card,
4708                                    struct qeth_reply *reply, unsigned long data)
4709 {
4710         struct qeth_ipa_cmd *cmd;
4711         struct qeth_query_card_info *card_info;
4712         struct carrier_info *carrier_info;
4713
4714         QETH_CARD_TEXT(card, 2, "qcrdincb");
4715         carrier_info = (struct carrier_info *)reply->param;
4716         cmd = (struct qeth_ipa_cmd *)data;
4717         card_info = &cmd->data.setadapterparms.data.card_info;
4718         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4719                 carrier_info->card_type = card_info->card_type;
4720                 carrier_info->port_mode = card_info->port_mode;
4721                 carrier_info->port_speed = card_info->port_speed;
4722         }
4723
4724         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4725         return 0;
4726 }
4727
4728 static int qeth_query_card_info(struct qeth_card *card,
4729                                 struct carrier_info *carrier_info)
4730 {
4731         struct qeth_cmd_buffer *iob;
4732
4733         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4734         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4735                 return -EOPNOTSUPP;
4736         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4737                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4738         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4739                                         (void *)carrier_info);
4740 }
4741
4742 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4743 {
4744         switch (card->info.type) {
4745         case QETH_CARD_TYPE_IQD:
4746                 return 2;
4747         default:
4748                 return 0;
4749         }
4750 }
4751
4752 static void qeth_determine_capabilities(struct qeth_card *card)
4753 {
4754         int rc;
4755         int length;
4756         char *prcd;
4757         struct ccw_device *ddev;
4758         int ddev_offline = 0;
4759
4760         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4761         ddev = CARD_DDEV(card);
4762         if (!ddev->online) {
4763                 ddev_offline = 1;
4764                 rc = ccw_device_set_online(ddev);
4765                 if (rc) {
4766                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4767                         goto out;
4768                 }
4769         }
4770
4771         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4772         if (rc) {
4773                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4774                         dev_name(&card->gdev->dev), rc);
4775                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4776                 goto out_offline;
4777         }
4778         qeth_configure_unitaddr(card, prcd);
4779         if (ddev_offline)
4780                 qeth_configure_blkt_default(card, prcd);
4781         kfree(prcd);
4782
4783         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4784         if (rc)
4785                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4786
4787         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4788         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4789         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4790         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4791         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4792             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4793             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4794                 dev_info(&card->gdev->dev,
4795                         "Completion Queueing supported\n");
4796         } else {
4797                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4798         }
4799
4800
4801 out_offline:
4802         if (ddev_offline == 1)
4803                 ccw_device_set_offline(ddev);
4804 out:
4805         return;
4806 }
4807
4808 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4809         struct qdio_buffer **in_sbal_ptrs,
4810         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4811         int i;
4812
4813         if (card->options.cq == QETH_CQ_ENABLED) {
4814                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4815                              (card->qdio.no_in_queues - 1);
4816                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4817                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4818                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4819                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4820                 }
4821
4822                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4823         }
4824 }
4825
4826 static int qeth_qdio_establish(struct qeth_card *card)
4827 {
4828         struct qdio_initialize init_data;
4829         char *qib_param_field;
4830         struct qdio_buffer **in_sbal_ptrs;
4831         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4832         struct qdio_buffer **out_sbal_ptrs;
4833         int i, j, k;
4834         int rc = 0;
4835
4836         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4837
4838         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4839                               GFP_KERNEL);
4840         if (!qib_param_field) {
4841                 rc =  -ENOMEM;
4842                 goto out_free_nothing;
4843         }
4844
4845         qeth_create_qib_param_field(card, qib_param_field);
4846         qeth_create_qib_param_field_blkt(card, qib_param_field);
4847
4848         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4849                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4850                                GFP_KERNEL);
4851         if (!in_sbal_ptrs) {
4852                 rc = -ENOMEM;
4853                 goto out_free_qib_param;
4854         }
4855         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4856                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4857                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4858         }
4859
4860         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4861                                    GFP_KERNEL);
4862         if (!queue_start_poll) {
4863                 rc = -ENOMEM;
4864                 goto out_free_in_sbals;
4865         }
4866         for (i = 0; i < card->qdio.no_in_queues; ++i)
4867                 queue_start_poll[i] = card->discipline->start_poll;
4868
4869         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4870
4871         out_sbal_ptrs =
4872                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4873                         sizeof(void *), GFP_KERNEL);
4874         if (!out_sbal_ptrs) {
4875                 rc = -ENOMEM;
4876                 goto out_free_queue_start_poll;
4877         }
4878         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4879                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4880                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4881                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4882                 }
4883
4884         memset(&init_data, 0, sizeof(struct qdio_initialize));
4885         init_data.cdev                   = CARD_DDEV(card);
4886         init_data.q_format               = qeth_get_qdio_q_format(card);
4887         init_data.qib_param_field_format = 0;
4888         init_data.qib_param_field        = qib_param_field;
4889         init_data.no_input_qs            = card->qdio.no_in_queues;
4890         init_data.no_output_qs           = card->qdio.no_out_queues;
4891         init_data.input_handler          = card->discipline->input_handler;
4892         init_data.output_handler         = card->discipline->output_handler;
4893         init_data.queue_start_poll_array = queue_start_poll;
4894         init_data.int_parm               = (unsigned long) card;
4895         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4896         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4897         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4898         init_data.scan_threshold =
4899                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4900
4901         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4902                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4903                 rc = qdio_allocate(&init_data);
4904                 if (rc) {
4905                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4906                         goto out;
4907                 }
4908                 rc = qdio_establish(&init_data);
4909                 if (rc) {
4910                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4911                         qdio_free(CARD_DDEV(card));
4912                 }
4913         }
4914
4915         switch (card->options.cq) {
4916         case QETH_CQ_ENABLED:
4917                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4918                 break;
4919         case QETH_CQ_DISABLED:
4920                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4921                 break;
4922         default:
4923                 break;
4924         }
4925 out:
4926         kfree(out_sbal_ptrs);
4927 out_free_queue_start_poll:
4928         kfree(queue_start_poll);
4929 out_free_in_sbals:
4930         kfree(in_sbal_ptrs);
4931 out_free_qib_param:
4932         kfree(qib_param_field);
4933 out_free_nothing:
4934         return rc;
4935 }
4936
4937 static void qeth_core_free_card(struct qeth_card *card)
4938 {
4939
4940         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4941         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4942         qeth_clean_channel(&card->read);
4943         qeth_clean_channel(&card->write);
4944         if (card->dev)
4945                 free_netdev(card->dev);
4946         kfree(card->ip_tbd_list);
4947         qeth_free_qdio_buffers(card);
4948         unregister_service_level(&card->qeth_service_level);
4949         kfree(card);
4950 }
4951
4952 void qeth_trace_features(struct qeth_card *card)
4953 {
4954         QETH_CARD_TEXT(card, 2, "features");
4955         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4956         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4957         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4958         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4959         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4960         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4961         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4962 }
4963 EXPORT_SYMBOL_GPL(qeth_trace_features);
4964
4965 static struct ccw_device_id qeth_ids[] = {
4966         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4967                                         .driver_info = QETH_CARD_TYPE_OSD},
4968         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4969                                         .driver_info = QETH_CARD_TYPE_IQD},
4970         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4971                                         .driver_info = QETH_CARD_TYPE_OSN},
4972         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4973                                         .driver_info = QETH_CARD_TYPE_OSM},
4974         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4975                                         .driver_info = QETH_CARD_TYPE_OSX},
4976         {},
4977 };
4978 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4979
4980 static struct ccw_driver qeth_ccw_driver = {
4981         .driver = {
4982                 .owner = THIS_MODULE,
4983                 .name = "qeth",
4984         },
4985         .ids = qeth_ids,
4986         .probe = ccwgroup_probe_ccwdev,
4987         .remove = ccwgroup_remove_ccwdev,
4988 };
4989
4990 int qeth_core_hardsetup_card(struct qeth_card *card)
4991 {
4992         int retries = 3;
4993         int rc;
4994
4995         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4996         atomic_set(&card->force_alloc_skb, 0);
4997         qeth_update_from_chp_desc(card);
4998 retry:
4999         if (retries < 3)
5000                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5001                         dev_name(&card->gdev->dev));
5002         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5003         ccw_device_set_offline(CARD_DDEV(card));
5004         ccw_device_set_offline(CARD_WDEV(card));
5005         ccw_device_set_offline(CARD_RDEV(card));
5006         qdio_free(CARD_DDEV(card));
5007         rc = ccw_device_set_online(CARD_RDEV(card));
5008         if (rc)
5009                 goto retriable;
5010         rc = ccw_device_set_online(CARD_WDEV(card));
5011         if (rc)
5012                 goto retriable;
5013         rc = ccw_device_set_online(CARD_DDEV(card));
5014         if (rc)
5015                 goto retriable;
5016 retriable:
5017         if (rc == -ERESTARTSYS) {
5018                 QETH_DBF_TEXT(SETUP, 2, "break1");
5019                 return rc;
5020         } else if (rc) {
5021                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5022                 if (--retries < 0)
5023                         goto out;
5024                 else
5025                         goto retry;
5026         }
5027         qeth_determine_capabilities(card);
5028         qeth_init_tokens(card);
5029         qeth_init_func_level(card);
5030         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5031         if (rc == -ERESTARTSYS) {
5032                 QETH_DBF_TEXT(SETUP, 2, "break2");
5033                 return rc;
5034         } else if (rc) {
5035                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5036                 if (--retries < 0)
5037                         goto out;
5038                 else
5039                         goto retry;
5040         }
5041         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5042         if (rc == -ERESTARTSYS) {
5043                 QETH_DBF_TEXT(SETUP, 2, "break3");
5044                 return rc;
5045         } else if (rc) {
5046                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5047                 if (--retries < 0)
5048                         goto out;
5049                 else
5050                         goto retry;
5051         }
5052         card->read_or_write_problem = 0;
5053         rc = qeth_mpc_initialize(card);
5054         if (rc) {
5055                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5056                 goto out;
5057         }
5058
5059         card->options.ipa4.supported_funcs = 0;
5060         card->options.adp.supported_funcs = 0;
5061         card->options.sbp.supported_funcs = 0;
5062         card->info.diagass_support = 0;
5063         qeth_query_ipassists(card, QETH_PROT_IPV4);
5064         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
5065                 qeth_query_setadapterparms(card);
5066         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
5067                 qeth_query_setdiagass(card);
5068         return 0;
5069 out:
5070         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5071                 "an error on the device\n");
5072         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5073                 dev_name(&card->gdev->dev), rc);
5074         return rc;
5075 }
5076 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5077
5078 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5079                 struct qdio_buffer_element *element,
5080                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5081 {
5082         struct page *page = virt_to_page(element->addr);
5083         if (*pskb == NULL) {
5084                 if (qethbuffer->rx_skb) {
5085                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5086                         *pskb = qethbuffer->rx_skb;
5087                         qethbuffer->rx_skb = NULL;
5088                 } else {
5089                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5090                         if (!(*pskb))
5091                                 return -ENOMEM;
5092                 }
5093
5094                 skb_reserve(*pskb, ETH_HLEN);
5095                 if (data_len <= QETH_RX_PULL_LEN) {
5096                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5097                                 data_len);
5098                 } else {
5099                         get_page(page);
5100                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5101                                element->addr + offset, QETH_RX_PULL_LEN);
5102                         skb_fill_page_desc(*pskb, *pfrag, page,
5103                                 offset + QETH_RX_PULL_LEN,
5104                                 data_len - QETH_RX_PULL_LEN);
5105                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5106                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5107                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5108                         (*pfrag)++;
5109                 }
5110         } else {
5111                 get_page(page);
5112                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5113                 (*pskb)->data_len += data_len;
5114                 (*pskb)->len      += data_len;
5115                 (*pskb)->truesize += data_len;
5116                 (*pfrag)++;
5117         }
5118
5119
5120         return 0;
5121 }
5122
5123 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5124 {
5125         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5126 }
5127
5128 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5129                 struct qeth_qdio_buffer *qethbuffer,
5130                 struct qdio_buffer_element **__element, int *__offset,
5131                 struct qeth_hdr **hdr)
5132 {
5133         struct qdio_buffer_element *element = *__element;
5134         struct qdio_buffer *buffer = qethbuffer->buffer;
5135         int offset = *__offset;
5136         struct sk_buff *skb = NULL;
5137         int skb_len = 0;
5138         void *data_ptr;
5139         int data_len;
5140         int headroom = 0;
5141         int use_rx_sg = 0;
5142         int frag = 0;
5143
5144         /* qeth_hdr must not cross element boundaries */
5145         if (element->length < offset + sizeof(struct qeth_hdr)) {
5146                 if (qeth_is_last_sbale(element))
5147                         return NULL;
5148                 element++;
5149                 offset = 0;
5150                 if (element->length < sizeof(struct qeth_hdr))
5151                         return NULL;
5152         }
5153         *hdr = element->addr + offset;
5154
5155         offset += sizeof(struct qeth_hdr);
5156         switch ((*hdr)->hdr.l2.id) {
5157         case QETH_HEADER_TYPE_LAYER2:
5158                 skb_len = (*hdr)->hdr.l2.pkt_length;
5159                 break;
5160         case QETH_HEADER_TYPE_LAYER3:
5161                 skb_len = (*hdr)->hdr.l3.length;
5162                 headroom = ETH_HLEN;
5163                 break;
5164         case QETH_HEADER_TYPE_OSN:
5165                 skb_len = (*hdr)->hdr.osn.pdu_length;
5166                 headroom = sizeof(struct qeth_hdr);
5167                 break;
5168         default:
5169                 break;
5170         }
5171
5172         if (!skb_len)
5173                 return NULL;
5174
5175         if (((skb_len >= card->options.rx_sg_cb) &&
5176              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5177              (!atomic_read(&card->force_alloc_skb))) ||
5178             (card->options.cq == QETH_CQ_ENABLED)) {
5179                 use_rx_sg = 1;
5180         } else {
5181                 skb = dev_alloc_skb(skb_len + headroom);
5182                 if (!skb)
5183                         goto no_mem;
5184                 if (headroom)
5185                         skb_reserve(skb, headroom);
5186         }
5187
5188         data_ptr = element->addr + offset;
5189         while (skb_len) {
5190                 data_len = min(skb_len, (int)(element->length - offset));
5191                 if (data_len) {
5192                         if (use_rx_sg) {
5193                                 if (qeth_create_skb_frag(qethbuffer, element,
5194                                     &skb, offset, &frag, data_len))
5195                                         goto no_mem;
5196                         } else {
5197                                 memcpy(skb_put(skb, data_len), data_ptr,
5198                                         data_len);
5199                         }
5200                 }
5201                 skb_len -= data_len;
5202                 if (skb_len) {
5203                         if (qeth_is_last_sbale(element)) {
5204                                 QETH_CARD_TEXT(card, 4, "unexeob");
5205                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5206                                 dev_kfree_skb_any(skb);
5207                                 card->stats.rx_errors++;
5208                                 return NULL;
5209                         }
5210                         element++;
5211                         offset = 0;
5212                         data_ptr = element->addr;
5213                 } else {
5214                         offset += data_len;
5215                 }
5216         }
5217         *__element = element;
5218         *__offset = offset;
5219         if (use_rx_sg && card->options.performance_stats) {
5220                 card->perf_stats.sg_skbs_rx++;
5221                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5222         }
5223         return skb;
5224 no_mem:
5225         if (net_ratelimit()) {
5226                 QETH_CARD_TEXT(card, 2, "noskbmem");
5227         }
5228         card->stats.rx_dropped++;
5229         return NULL;
5230 }
5231 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5232
5233 static void qeth_unregister_dbf_views(void)
5234 {
5235         int x;
5236         for (x = 0; x < QETH_DBF_INFOS; x++) {
5237                 debug_unregister(qeth_dbf[x].id);
5238                 qeth_dbf[x].id = NULL;
5239         }
5240 }
5241
5242 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5243 {
5244         char dbf_txt_buf[32];
5245         va_list args;
5246
5247         if (!debug_level_enabled(id, level))
5248                 return;
5249         va_start(args, fmt);
5250         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5251         va_end(args);
5252         debug_text_event(id, level, dbf_txt_buf);
5253 }
5254 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5255
5256 static int qeth_register_dbf_views(void)
5257 {
5258         int ret;
5259         int x;
5260
5261         for (x = 0; x < QETH_DBF_INFOS; x++) {
5262                 /* register the areas */
5263                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5264                                                 qeth_dbf[x].pages,
5265                                                 qeth_dbf[x].areas,
5266                                                 qeth_dbf[x].len);
5267                 if (qeth_dbf[x].id == NULL) {
5268                         qeth_unregister_dbf_views();
5269                         return -ENOMEM;
5270                 }
5271
5272                 /* register a view */
5273                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5274                 if (ret) {
5275                         qeth_unregister_dbf_views();
5276                         return ret;
5277                 }
5278
5279                 /* set a passing level */
5280                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5281         }
5282
5283         return 0;
5284 }
5285
5286 int qeth_core_load_discipline(struct qeth_card *card,
5287                 enum qeth_discipline_id discipline)
5288 {
5289         int rc = 0;
5290         mutex_lock(&qeth_mod_mutex);
5291         switch (discipline) {
5292         case QETH_DISCIPLINE_LAYER3:
5293                 card->discipline = try_then_request_module(
5294                         symbol_get(qeth_l3_discipline), "qeth_l3");
5295                 break;
5296         case QETH_DISCIPLINE_LAYER2:
5297                 card->discipline = try_then_request_module(
5298                         symbol_get(qeth_l2_discipline), "qeth_l2");
5299                 break;
5300         }
5301         if (!card->discipline) {
5302                 dev_err(&card->gdev->dev, "There is no kernel module to "
5303                         "support discipline %d\n", discipline);
5304                 rc = -EINVAL;
5305         }
5306         mutex_unlock(&qeth_mod_mutex);
5307         return rc;
5308 }
5309
5310 void qeth_core_free_discipline(struct qeth_card *card)
5311 {
5312         if (card->options.layer2)
5313                 symbol_put(qeth_l2_discipline);
5314         else
5315                 symbol_put(qeth_l3_discipline);
5316         card->discipline = NULL;
5317 }
5318
5319 static const struct device_type qeth_generic_devtype = {
5320         .name = "qeth_generic",
5321         .groups = qeth_generic_attr_groups,
5322 };
5323 static const struct device_type qeth_osn_devtype = {
5324         .name = "qeth_osn",
5325         .groups = qeth_osn_attr_groups,
5326 };
5327
5328 #define DBF_NAME_LEN    20
5329
5330 struct qeth_dbf_entry {
5331         char dbf_name[DBF_NAME_LEN];
5332         debug_info_t *dbf_info;
5333         struct list_head dbf_list;
5334 };
5335
5336 static LIST_HEAD(qeth_dbf_list);
5337 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5338
5339 static debug_info_t *qeth_get_dbf_entry(char *name)
5340 {
5341         struct qeth_dbf_entry *entry;
5342         debug_info_t *rc = NULL;
5343
5344         mutex_lock(&qeth_dbf_list_mutex);
5345         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5346                 if (strcmp(entry->dbf_name, name) == 0) {
5347                         rc = entry->dbf_info;
5348                         break;
5349                 }
5350         }
5351         mutex_unlock(&qeth_dbf_list_mutex);
5352         return rc;
5353 }
5354
5355 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5356 {
5357         struct qeth_dbf_entry *new_entry;
5358
5359         card->debug = debug_register(name, 2, 1, 8);
5360         if (!card->debug) {
5361                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5362                 goto err;
5363         }
5364         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5365                 goto err_dbg;
5366         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5367         if (!new_entry)
5368                 goto err_dbg;
5369         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5370         new_entry->dbf_info = card->debug;
5371         mutex_lock(&qeth_dbf_list_mutex);
5372         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5373         mutex_unlock(&qeth_dbf_list_mutex);
5374
5375         return 0;
5376
5377 err_dbg:
5378         debug_unregister(card->debug);
5379 err:
5380         return -ENOMEM;
5381 }
5382
5383 static void qeth_clear_dbf_list(void)
5384 {
5385         struct qeth_dbf_entry *entry, *tmp;
5386
5387         mutex_lock(&qeth_dbf_list_mutex);
5388         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5389                 list_del(&entry->dbf_list);
5390                 debug_unregister(entry->dbf_info);
5391                 kfree(entry);
5392         }
5393         mutex_unlock(&qeth_dbf_list_mutex);
5394 }
5395
5396 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5397 {
5398         struct qeth_card *card;
5399         struct device *dev;
5400         int rc;
5401         unsigned long flags;
5402         char dbf_name[DBF_NAME_LEN];
5403
5404         QETH_DBF_TEXT(SETUP, 2, "probedev");
5405
5406         dev = &gdev->dev;
5407         if (!get_device(dev))
5408                 return -ENODEV;
5409
5410         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5411
5412         card = qeth_alloc_card();
5413         if (!card) {
5414                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5415                 rc = -ENOMEM;
5416                 goto err_dev;
5417         }
5418
5419         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5420                 dev_name(&gdev->dev));
5421         card->debug = qeth_get_dbf_entry(dbf_name);
5422         if (!card->debug) {
5423                 rc = qeth_add_dbf_entry(card, dbf_name);
5424                 if (rc)
5425                         goto err_card;
5426         }
5427
5428         card->read.ccwdev  = gdev->cdev[0];
5429         card->write.ccwdev = gdev->cdev[1];
5430         card->data.ccwdev  = gdev->cdev[2];
5431         dev_set_drvdata(&gdev->dev, card);
5432         card->gdev = gdev;
5433         gdev->cdev[0]->handler = qeth_irq;
5434         gdev->cdev[1]->handler = qeth_irq;
5435         gdev->cdev[2]->handler = qeth_irq;
5436
5437         rc = qeth_determine_card_type(card);
5438         if (rc) {
5439                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5440                 goto err_card;
5441         }
5442         rc = qeth_setup_card(card);
5443         if (rc) {
5444                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5445                 goto err_card;
5446         }
5447
5448         if (card->info.type == QETH_CARD_TYPE_OSN)
5449                 gdev->dev.type = &qeth_osn_devtype;
5450         else
5451                 gdev->dev.type = &qeth_generic_devtype;
5452
5453         switch (card->info.type) {
5454         case QETH_CARD_TYPE_OSN:
5455         case QETH_CARD_TYPE_OSM:
5456                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5457                 if (rc)
5458                         goto err_card;
5459                 rc = card->discipline->setup(card->gdev);
5460                 if (rc)
5461                         goto err_disc;
5462         case QETH_CARD_TYPE_OSD:
5463         case QETH_CARD_TYPE_OSX:
5464         default:
5465                 break;
5466         }
5467
5468         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5469         list_add_tail(&card->list, &qeth_core_card_list.list);
5470         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5471
5472         qeth_determine_capabilities(card);
5473         return 0;
5474
5475 err_disc:
5476         qeth_core_free_discipline(card);
5477 err_card:
5478         qeth_core_free_card(card);
5479 err_dev:
5480         put_device(dev);
5481         return rc;
5482 }
5483
5484 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5485 {
5486         unsigned long flags;
5487         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5488
5489         QETH_DBF_TEXT(SETUP, 2, "removedv");
5490
5491         if (card->discipline) {
5492                 card->discipline->remove(gdev);
5493                 qeth_core_free_discipline(card);
5494         }
5495
5496         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5497         list_del(&card->list);
5498         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5499         qeth_core_free_card(card);
5500         dev_set_drvdata(&gdev->dev, NULL);
5501         put_device(&gdev->dev);
5502         return;
5503 }
5504
5505 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5506 {
5507         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5508         int rc = 0;
5509         int def_discipline;
5510
5511         if (!card->discipline) {
5512                 if (card->info.type == QETH_CARD_TYPE_IQD)
5513                         def_discipline = QETH_DISCIPLINE_LAYER3;
5514                 else
5515                         def_discipline = QETH_DISCIPLINE_LAYER2;
5516                 rc = qeth_core_load_discipline(card, def_discipline);
5517                 if (rc)
5518                         goto err;
5519                 rc = card->discipline->setup(card->gdev);
5520                 if (rc)
5521                         goto err;
5522         }
5523         rc = card->discipline->set_online(gdev);
5524 err:
5525         return rc;
5526 }
5527
5528 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5529 {
5530         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5531         return card->discipline->set_offline(gdev);
5532 }
5533
5534 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5535 {
5536         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5537         if (card->discipline && card->discipline->shutdown)
5538                 card->discipline->shutdown(gdev);
5539 }
5540
5541 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5542 {
5543         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5544         if (card->discipline && card->discipline->prepare)
5545                 return card->discipline->prepare(gdev);
5546         return 0;
5547 }
5548
5549 static void qeth_core_complete(struct ccwgroup_device *gdev)
5550 {
5551         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5552         if (card->discipline && card->discipline->complete)
5553                 card->discipline->complete(gdev);
5554 }
5555
5556 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5557 {
5558         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5559         if (card->discipline && card->discipline->freeze)
5560                 return card->discipline->freeze(gdev);
5561         return 0;
5562 }
5563
5564 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5565 {
5566         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5567         if (card->discipline && card->discipline->thaw)
5568                 return card->discipline->thaw(gdev);
5569         return 0;
5570 }
5571
5572 static int qeth_core_restore(struct ccwgroup_device *gdev)
5573 {
5574         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5575         if (card->discipline && card->discipline->restore)
5576                 return card->discipline->restore(gdev);
5577         return 0;
5578 }
5579
5580 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5581         .driver = {
5582                 .owner = THIS_MODULE,
5583                 .name = "qeth",
5584         },
5585         .setup = qeth_core_probe_device,
5586         .remove = qeth_core_remove_device,
5587         .set_online = qeth_core_set_online,
5588         .set_offline = qeth_core_set_offline,
5589         .shutdown = qeth_core_shutdown,
5590         .prepare = qeth_core_prepare,
5591         .complete = qeth_core_complete,
5592         .freeze = qeth_core_freeze,
5593         .thaw = qeth_core_thaw,
5594         .restore = qeth_core_restore,
5595 };
5596
5597 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5598                                             const char *buf, size_t count)
5599 {
5600         int err;
5601
5602         err = ccwgroup_create_dev(qeth_core_root_dev,
5603                                   &qeth_core_ccwgroup_driver, 3, buf);
5604
5605         return err ? err : count;
5606 }
5607 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5608
5609 static struct attribute *qeth_drv_attrs[] = {
5610         &driver_attr_group.attr,
5611         NULL,
5612 };
5613 static struct attribute_group qeth_drv_attr_group = {
5614         .attrs = qeth_drv_attrs,
5615 };
5616 static const struct attribute_group *qeth_drv_attr_groups[] = {
5617         &qeth_drv_attr_group,
5618         NULL,
5619 };
5620
5621 static struct {
5622         const char str[ETH_GSTRING_LEN];
5623 } qeth_ethtool_stats_keys[] = {
5624 /*  0 */{"rx skbs"},
5625         {"rx buffers"},
5626         {"tx skbs"},
5627         {"tx buffers"},
5628         {"tx skbs no packing"},
5629         {"tx buffers no packing"},
5630         {"tx skbs packing"},
5631         {"tx buffers packing"},
5632         {"tx sg skbs"},
5633         {"tx sg frags"},
5634 /* 10 */{"rx sg skbs"},
5635         {"rx sg frags"},
5636         {"rx sg page allocs"},
5637         {"tx large kbytes"},
5638         {"tx large count"},
5639         {"tx pk state ch n->p"},
5640         {"tx pk state ch p->n"},
5641         {"tx pk watermark low"},
5642         {"tx pk watermark high"},
5643         {"queue 0 buffer usage"},
5644 /* 20 */{"queue 1 buffer usage"},
5645         {"queue 2 buffer usage"},
5646         {"queue 3 buffer usage"},
5647         {"rx poll time"},
5648         {"rx poll count"},
5649         {"rx do_QDIO time"},
5650         {"rx do_QDIO count"},
5651         {"tx handler time"},
5652         {"tx handler count"},
5653         {"tx time"},
5654 /* 30 */{"tx count"},
5655         {"tx do_QDIO time"},
5656         {"tx do_QDIO count"},
5657         {"tx csum"},
5658         {"tx lin"},
5659         {"cq handler count"},
5660         {"cq handler time"}
5661 };
5662
5663 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5664 {
5665         switch (stringset) {
5666         case ETH_SS_STATS:
5667                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5668         default:
5669                 return -EINVAL;
5670         }
5671 }
5672 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5673
5674 void qeth_core_get_ethtool_stats(struct net_device *dev,
5675                 struct ethtool_stats *stats, u64 *data)
5676 {
5677         struct qeth_card *card = dev->ml_priv;
5678         data[0] = card->stats.rx_packets -
5679                                 card->perf_stats.initial_rx_packets;
5680         data[1] = card->perf_stats.bufs_rec;
5681         data[2] = card->stats.tx_packets -
5682                                 card->perf_stats.initial_tx_packets;
5683         data[3] = card->perf_stats.bufs_sent;
5684         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5685                         - card->perf_stats.skbs_sent_pack;
5686         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5687         data[6] = card->perf_stats.skbs_sent_pack;
5688         data[7] = card->perf_stats.bufs_sent_pack;
5689         data[8] = card->perf_stats.sg_skbs_sent;
5690         data[9] = card->perf_stats.sg_frags_sent;
5691         data[10] = card->perf_stats.sg_skbs_rx;
5692         data[11] = card->perf_stats.sg_frags_rx;
5693         data[12] = card->perf_stats.sg_alloc_page_rx;
5694         data[13] = (card->perf_stats.large_send_bytes >> 10);
5695         data[14] = card->perf_stats.large_send_cnt;
5696         data[15] = card->perf_stats.sc_dp_p;
5697         data[16] = card->perf_stats.sc_p_dp;
5698         data[17] = QETH_LOW_WATERMARK_PACK;
5699         data[18] = QETH_HIGH_WATERMARK_PACK;
5700         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5701         data[20] = (card->qdio.no_out_queues > 1) ?
5702                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5703         data[21] = (card->qdio.no_out_queues > 2) ?
5704                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5705         data[22] = (card->qdio.no_out_queues > 3) ?
5706                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5707         data[23] = card->perf_stats.inbound_time;
5708         data[24] = card->perf_stats.inbound_cnt;
5709         data[25] = card->perf_stats.inbound_do_qdio_time;
5710         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5711         data[27] = card->perf_stats.outbound_handler_time;
5712         data[28] = card->perf_stats.outbound_handler_cnt;
5713         data[29] = card->perf_stats.outbound_time;
5714         data[30] = card->perf_stats.outbound_cnt;
5715         data[31] = card->perf_stats.outbound_do_qdio_time;
5716         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5717         data[33] = card->perf_stats.tx_csum;
5718         data[34] = card->perf_stats.tx_lin;
5719         data[35] = card->perf_stats.cq_cnt;
5720         data[36] = card->perf_stats.cq_time;
5721 }
5722 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5723
5724 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5725 {
5726         switch (stringset) {
5727         case ETH_SS_STATS:
5728                 memcpy(data, &qeth_ethtool_stats_keys,
5729                         sizeof(qeth_ethtool_stats_keys));
5730                 break;
5731         default:
5732                 WARN_ON(1);
5733                 break;
5734         }
5735 }
5736 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5737
5738 void qeth_core_get_drvinfo(struct net_device *dev,
5739                 struct ethtool_drvinfo *info)
5740 {
5741         struct qeth_card *card = dev->ml_priv;
5742
5743         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5744                 sizeof(info->driver));
5745         strlcpy(info->version, "1.0", sizeof(info->version));
5746         strlcpy(info->fw_version, card->info.mcl_level,
5747                 sizeof(info->fw_version));
5748         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5749                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5750 }
5751 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5752
5753 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5754 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5755 /* Always advertize and support all speeds up to specified, and only one     */
5756 /* specified port type.                                                      */
5757 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5758                                 int maxspeed, int porttype)
5759 {
5760         int port_sup, port_adv, spd_sup, spd_adv;
5761
5762         switch (porttype) {
5763         case PORT_TP:
5764                 port_sup = SUPPORTED_TP;
5765                 port_adv = ADVERTISED_TP;
5766                 break;
5767         case PORT_FIBRE:
5768                 port_sup = SUPPORTED_FIBRE;
5769                 port_adv = ADVERTISED_FIBRE;
5770                 break;
5771         default:
5772                 port_sup = SUPPORTED_TP;
5773                 port_adv = ADVERTISED_TP;
5774                 WARN_ON_ONCE(1);
5775         }
5776
5777         /* "Fallthrough" case'es ordered from high to low result in setting  */
5778         /* flags cumulatively, starting from the specified speed and down to */
5779         /* the lowest possible.                                              */
5780         spd_sup = 0;
5781         spd_adv = 0;
5782         switch (maxspeed) {
5783         case SPEED_10000:
5784                 spd_sup |= SUPPORTED_10000baseT_Full;
5785                 spd_adv |= ADVERTISED_10000baseT_Full;
5786         case SPEED_1000:
5787                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5788                 spd_adv |= ADVERTISED_1000baseT_Half |
5789                                                 ADVERTISED_1000baseT_Full;
5790         case SPEED_100:
5791                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5792                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5793         case SPEED_10:
5794                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5795                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5796         break;
5797         default:
5798                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5799                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5800                 WARN_ON_ONCE(1);
5801         }
5802         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5803         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5804 }
5805
5806 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5807                                         struct ethtool_cmd *ecmd)
5808 {
5809         struct qeth_card *card = netdev->ml_priv;
5810         enum qeth_link_types link_type;
5811         struct carrier_info carrier_info;
5812         int rc;
5813         u32 speed;
5814
5815         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5816                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5817         else
5818                 link_type = card->info.link_type;
5819
5820         ecmd->transceiver = XCVR_INTERNAL;
5821         ecmd->duplex = DUPLEX_FULL;
5822         ecmd->autoneg = AUTONEG_ENABLE;
5823
5824         switch (link_type) {
5825         case QETH_LINK_TYPE_FAST_ETH:
5826         case QETH_LINK_TYPE_LANE_ETH100:
5827                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5828                 speed = SPEED_100;
5829                 ecmd->port = PORT_TP;
5830                 break;
5831
5832         case QETH_LINK_TYPE_GBIT_ETH:
5833         case QETH_LINK_TYPE_LANE_ETH1000:
5834                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5835                 speed = SPEED_1000;
5836                 ecmd->port = PORT_FIBRE;
5837                 break;
5838
5839         case QETH_LINK_TYPE_10GBIT_ETH:
5840                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5841                 speed = SPEED_10000;
5842                 ecmd->port = PORT_FIBRE;
5843                 break;
5844
5845         default:
5846                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5847                 speed = SPEED_10;
5848                 ecmd->port = PORT_TP;
5849         }
5850         ethtool_cmd_speed_set(ecmd, speed);
5851
5852         /* Check if we can obtain more accurate information.     */
5853         /* If QUERY_CARD_INFO command is not supported or fails, */
5854         /* just return the heuristics that was filled above.     */
5855         if (!qeth_card_hw_is_reachable(card))
5856                 return -ENODEV;
5857         rc = qeth_query_card_info(card, &carrier_info);
5858         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
5859                 return 0;
5860         if (rc) /* report error from the hardware operation */
5861                 return rc;
5862         /* on success, fill in the information got from the hardware */
5863
5864         netdev_dbg(netdev,
5865         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5866                         carrier_info.card_type,
5867                         carrier_info.port_mode,
5868                         carrier_info.port_speed);
5869
5870         /* Update attributes for which we've obtained more authoritative */
5871         /* information, leave the rest the way they where filled above.  */
5872         switch (carrier_info.card_type) {
5873         case CARD_INFO_TYPE_1G_COPPER_A:
5874         case CARD_INFO_TYPE_1G_COPPER_B:
5875                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5876                 ecmd->port = PORT_TP;
5877                 break;
5878         case CARD_INFO_TYPE_1G_FIBRE_A:
5879         case CARD_INFO_TYPE_1G_FIBRE_B:
5880                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5881                 ecmd->port = PORT_FIBRE;
5882                 break;
5883         case CARD_INFO_TYPE_10G_FIBRE_A:
5884         case CARD_INFO_TYPE_10G_FIBRE_B:
5885                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5886                 ecmd->port = PORT_FIBRE;
5887                 break;
5888         }
5889
5890         switch (carrier_info.port_mode) {
5891         case CARD_INFO_PORTM_FULLDUPLEX:
5892                 ecmd->duplex = DUPLEX_FULL;
5893                 break;
5894         case CARD_INFO_PORTM_HALFDUPLEX:
5895                 ecmd->duplex = DUPLEX_HALF;
5896                 break;
5897         }
5898
5899         switch (carrier_info.port_speed) {
5900         case CARD_INFO_PORTS_10M:
5901                 speed = SPEED_10;
5902                 break;
5903         case CARD_INFO_PORTS_100M:
5904                 speed = SPEED_100;
5905                 break;
5906         case CARD_INFO_PORTS_1G:
5907                 speed = SPEED_1000;
5908                 break;
5909         case CARD_INFO_PORTS_10G:
5910                 speed = SPEED_10000;
5911                 break;
5912         }
5913         ethtool_cmd_speed_set(ecmd, speed);
5914
5915         return 0;
5916 }
5917 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5918
5919 static int __init qeth_core_init(void)
5920 {
5921         int rc;
5922
5923         pr_info("loading core functions\n");
5924         INIT_LIST_HEAD(&qeth_core_card_list.list);
5925         INIT_LIST_HEAD(&qeth_dbf_list);
5926         rwlock_init(&qeth_core_card_list.rwlock);
5927         mutex_init(&qeth_mod_mutex);
5928
5929         qeth_wq = create_singlethread_workqueue("qeth_wq");
5930
5931         rc = qeth_register_dbf_views();
5932         if (rc)
5933                 goto out_err;
5934         qeth_core_root_dev = root_device_register("qeth");
5935         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
5936         if (rc)
5937                 goto register_err;
5938         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5939                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5940         if (!qeth_core_header_cache) {
5941                 rc = -ENOMEM;
5942                 goto slab_err;
5943         }
5944         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5945                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5946         if (!qeth_qdio_outbuf_cache) {
5947                 rc = -ENOMEM;
5948                 goto cqslab_err;
5949         }
5950         rc = ccw_driver_register(&qeth_ccw_driver);
5951         if (rc)
5952                 goto ccw_err;
5953         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5954         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5955         if (rc)
5956                 goto ccwgroup_err;
5957
5958         return 0;
5959
5960 ccwgroup_err:
5961         ccw_driver_unregister(&qeth_ccw_driver);
5962 ccw_err:
5963         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5964 cqslab_err:
5965         kmem_cache_destroy(qeth_core_header_cache);
5966 slab_err:
5967         root_device_unregister(qeth_core_root_dev);
5968 register_err:
5969         qeth_unregister_dbf_views();
5970 out_err:
5971         pr_err("Initializing the qeth device driver failed\n");
5972         return rc;
5973 }
5974
5975 static void __exit qeth_core_exit(void)
5976 {
5977         qeth_clear_dbf_list();
5978         destroy_workqueue(qeth_wq);
5979         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5980         ccw_driver_unregister(&qeth_ccw_driver);
5981         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5982         kmem_cache_destroy(qeth_core_header_cache);
5983         root_device_unregister(qeth_core_root_dev);
5984         qeth_unregister_dbf_views();
5985         pr_info("core functions removed\n");
5986 }
5987
5988 module_init(qeth_core_init);
5989 module_exit(qeth_core_exit);
5990 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5991 MODULE_DESCRIPTION("qeth core functions");
5992 MODULE_LICENSE("GPL");