drivers/s390/net/qeth_core_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/ip.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21 #include <linux/slab.h>
  22 #include <net/iucv/af_iucv.h>
  23 #include <net/dsfield.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/chpid.h>
  27 #include <asm/io.h>
  28 #include <asm/sysinfo.h>
  29 #include <asm/compat.h>
  30
  31 #include "qeth_core.h"
  32
  33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  34         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  35         /*                   N  P  A    M  L  V                      H  */
  36         [QETH_DBF_SETUP] = {"qeth_setup",
  37                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  38         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  39                             &debug_sprintf_view, NULL},
  40         [QETH_DBF_CTRL]  = {"qeth_control",
  41                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  42 };
  43 EXPORT_SYMBOL_GPL(qeth_dbf);
  44
  45 struct qeth_card_list_struct qeth_core_card_list;
  46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  47 struct kmem_cache *qeth_core_header_cache;
  48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  49 static struct kmem_cache *qeth_qdio_outbuf_cache;
  50
  51 static struct device *qeth_core_root_dev;
  52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  53 static struct lock_class_key qdio_out_skb_queue_key;
  54 static struct mutex qeth_mod_mutex;
  55
  56 static void qeth_send_control_data_cb(struct qeth_channel *,
  57                         struct qeth_cmd_buffer *);
  58 static int qeth_issue_next_read(struct qeth_card *);
  59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  61 static void qeth_free_buffer_pool(struct qeth_card *);
  62 static int qeth_qdio_establish(struct qeth_card *);
  63 static void qeth_free_qdio_buffers(struct qeth_card *);
  64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  65                 struct qeth_qdio_out_buffer *buf,
  66                 enum iucv_tx_notify notification);
  67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  69                 struct qeth_qdio_out_buffer *buf,
  70                 enum qeth_qdio_buffer_states newbufstate);
  71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  72
  73 struct workqueue_struct *qeth_wq;
  74 EXPORT_SYMBOL_GPL(qeth_wq);
  75
  76 static void qeth_close_dev_handler(struct work_struct *work)
  77 {
  78         struct qeth_card *card;
  79
  80         card = container_of(work, struct qeth_card, close_dev_work);
  81         QETH_CARD_TEXT(card, 2, "cldevhdl");
  82         rtnl_lock();
  83         dev_close(card->dev);
  84         rtnl_unlock();
  85         ccwgroup_set_offline(card->gdev);
  86 }
  87
  88 void qeth_close_dev(struct qeth_card *card)
  89 {
  90         QETH_CARD_TEXT(card, 2, "cldevsubm");
  91         queue_work(qeth_wq, &card->close_dev_work);
  92 }
  93 EXPORT_SYMBOL_GPL(qeth_close_dev);
  94
  95 static inline const char *qeth_get_cardname(struct qeth_card *card)
  96 {
  97         if (card->info.guestlan) {
  98                 switch (card->info.type) {
  99                 case QETH_CARD_TYPE_OSD:
 100                         return " Virtual NIC QDIO";
 101                 case QETH_CARD_TYPE_IQD:
 102                         return " Virtual NIC Hiper";
 103                 case QETH_CARD_TYPE_OSM:
 104                         return " Virtual NIC QDIO - OSM";
 105                 case QETH_CARD_TYPE_OSX:
 106                         return " Virtual NIC QDIO - OSX";
 107                 default:
 108                         return " unknown";
 109                 }
 110         } else {
 111                 switch (card->info.type) {
 112                 case QETH_CARD_TYPE_OSD:
 113                         return " OSD Express";
 114                 case QETH_CARD_TYPE_IQD:
 115                         return " HiperSockets";
 116                 case QETH_CARD_TYPE_OSN:
 117                         return " OSN QDIO";
 118                 case QETH_CARD_TYPE_OSM:
 119                         return " OSM QDIO";
 120                 case QETH_CARD_TYPE_OSX:
 121                         return " OSX QDIO";
 122                 default:
 123                         return " unknown";
 124                 }
 125         }
 126         return " n/a";
 127 }
 128
 129 /* max length to be returned: 14 */
 130 const char *qeth_get_cardname_short(struct qeth_card *card)
 131 {
 132         if (card->info.guestlan) {
 133                 switch (card->info.type) {
 134                 case QETH_CARD_TYPE_OSD:
 135                         return "Virt.NIC QDIO";
 136                 case QETH_CARD_TYPE_IQD:
 137                         return "Virt.NIC Hiper";
 138                 case QETH_CARD_TYPE_OSM:
 139                         return "Virt.NIC OSM";
 140                 case QETH_CARD_TYPE_OSX:
 141                         return "Virt.NIC OSX";
 142                 default:
 143                         return "unknown";
 144                 }
 145         } else {
 146                 switch (card->info.type) {
 147                 case QETH_CARD_TYPE_OSD:
 148                         switch (card->info.link_type) {
 149                         case QETH_LINK_TYPE_FAST_ETH:
 150                                 return "OSD_100";
 151                         case QETH_LINK_TYPE_HSTR:
 152                                 return "HSTR";
 153                         case QETH_LINK_TYPE_GBIT_ETH:
 154                                 return "OSD_1000";
 155                         case QETH_LINK_TYPE_10GBIT_ETH:
 156                                 return "OSD_10GIG";
 157                         case QETH_LINK_TYPE_LANE_ETH100:
 158                                 return "OSD_FE_LANE";
 159                         case QETH_LINK_TYPE_LANE_TR:
 160                                 return "OSD_TR_LANE";
 161                         case QETH_LINK_TYPE_LANE_ETH1000:
 162                                 return "OSD_GbE_LANE";
 163                         case QETH_LINK_TYPE_LANE:
 164                                 return "OSD_ATM_LANE";
 165                         default:
 166                                 return "OSD_Express";
 167                         }
 168                 case QETH_CARD_TYPE_IQD:
 169                         return "HiperSockets";
 170                 case QETH_CARD_TYPE_OSN:
 171                         return "OSN";
 172                 case QETH_CARD_TYPE_OSM:
 173                         return "OSM_1000";
 174                 case QETH_CARD_TYPE_OSX:
 175                         return "OSX_10GIG";
 176                 default:
 177                         return "unknown";
 178                 }
 179         }
 180         return "n/a";
 181 }
 182
 183 void qeth_set_recovery_task(struct qeth_card *card)
 184 {
 185         card->recovery_task = current;
 186 }
 187 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 188
 189 void qeth_clear_recovery_task(struct qeth_card *card)
 190 {
 191         card->recovery_task = NULL;
 192 }
 193 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 194
 195 static bool qeth_is_recovery_task(const struct qeth_card *card)
 196 {
 197         return card->recovery_task == current;
 198 }
 199
 200 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 201                          int clear_start_mask)
 202 {
 203         unsigned long flags;
 204
 205         spin_lock_irqsave(&card->thread_mask_lock, flags);
 206         card->thread_allowed_mask = threads;
 207         if (clear_start_mask)
 208                 card->thread_start_mask &= threads;
 209         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 210         wake_up(&card->wait_q);
 211 }
 212 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 213
 214 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 215 {
 216         unsigned long flags;
 217         int rc = 0;
 218
 219         spin_lock_irqsave(&card->thread_mask_lock, flags);
 220         rc = (card->thread_running_mask & threads);
 221         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 222         return rc;
 223 }
 224 EXPORT_SYMBOL_GPL(qeth_threads_running);
 225
 226 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 227 {
 228         if (qeth_is_recovery_task(card))
 229                 return 0;
 230         return wait_event_interruptible(card->wait_q,
 231                         qeth_threads_running(card, threads) == 0);
 232 }
 233 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 234
 235 void qeth_clear_working_pool_list(struct qeth_card *card)
 236 {
 237         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 238
 239         QETH_CARD_TEXT(card, 5, "clwrklst");
 240         list_for_each_entry_safe(pool_entry, tmp,
 241                             &card->qdio.in_buf_pool.entry_list, list){
 242                         list_del(&pool_entry->list);
 243         }
 244 }
 245 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 246
 247 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 248 {
 249         struct qeth_buffer_pool_entry *pool_entry;
 250         void *ptr;
 251         int i, j;
 252
 253         QETH_CARD_TEXT(card, 5, "alocpool");
 254         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 255                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 256                 if (!pool_entry) {
 257                         qeth_free_buffer_pool(card);
 258                         return -ENOMEM;
 259                 }
 260                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 261                         ptr = (void *) __get_free_page(GFP_KERNEL);
 262                         if (!ptr) {
 263                                 while (j > 0)
 264                                         free_page((unsigned long)
 265                                                   pool_entry->elements[--j]);
 266                                 kfree(pool_entry);
 267                                 qeth_free_buffer_pool(card);
 268                                 return -ENOMEM;
 269                         }
 270                         pool_entry->elements[j] = ptr;
 271                 }
 272                 list_add(&pool_entry->init_list,
 273                          &card->qdio.init_pool.entry_list);
 274         }
 275         return 0;
 276 }
 277
 278 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 279 {
 280         QETH_CARD_TEXT(card, 2, "realcbp");
 281
 282         if ((card->state != CARD_STATE_DOWN) &&
 283             (card->state != CARD_STATE_RECOVER))
 284                 return -EPERM;
 285
 286         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 287         qeth_clear_working_pool_list(card);
 288         qeth_free_buffer_pool(card);
 289         card->qdio.in_buf_pool.buf_count = bufcnt;
 290         card->qdio.init_pool.buf_count = bufcnt;
 291         return qeth_alloc_buffer_pool(card);
 292 }
 293 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 294
 295 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 296 {
 297         if (!q)
 298                 return;
 299
 300         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 301         kfree(q);
 302 }
 303
 304 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 305 {
 306         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 307         int i;
 308
 309         if (!q)
 310                 return NULL;
 311
 312         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 313                 kfree(q);
 314                 return NULL;
 315         }
 316
 317         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 318                 q->bufs[i].buffer = q->qdio_bufs[i];
 319
 320         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 321         return q;
 322 }
 323
 324 static inline int qeth_cq_init(struct qeth_card *card)
 325 {
 326         int rc;
 327
 328         if (card->options.cq == QETH_CQ_ENABLED) {
 329                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 330                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 331                                    QDIO_MAX_BUFFERS_PER_Q);
 332                 card->qdio.c_q->next_buf_to_init = 127;
 333                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 334                              card->qdio.no_in_queues - 1, 0,
 335                              127);
 336                 if (rc) {
 337                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 338                         goto out;
 339                 }
 340         }
 341         rc = 0;
 342 out:
 343         return rc;
 344 }
 345
 346 static inline int qeth_alloc_cq(struct qeth_card *card)
 347 {
 348         int rc;
 349
 350         if (card->options.cq == QETH_CQ_ENABLED) {
 351                 int i;
 352                 struct qdio_outbuf_state *outbuf_states;
 353
 354                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 355                 card->qdio.c_q = qeth_alloc_qdio_queue();
 356                 if (!card->qdio.c_q) {
 357                         rc = -1;
 358                         goto kmsg_out;
 359                 }
 360                 card->qdio.no_in_queues = 2;
 361                 card->qdio.out_bufstates =
 362                         kzalloc(card->qdio.no_out_queues *
 363                                 QDIO_MAX_BUFFERS_PER_Q *
 364                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 365                 outbuf_states = card->qdio.out_bufstates;
 366                 if (outbuf_states == NULL) {
 367                         rc = -1;
 368                         goto free_cq_out;
 369                 }
 370                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 371                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 372                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 373                 }
 374         } else {
 375                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 376                 card->qdio.c_q = NULL;
 377                 card->qdio.no_in_queues = 1;
 378         }
 379         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 380         rc = 0;
 381 out:
 382         return rc;
 383 free_cq_out:
 384         qeth_free_qdio_queue(card->qdio.c_q);
 385         card->qdio.c_q = NULL;
 386 kmsg_out:
 387         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 388         goto out;
 389 }
 390
 391 static inline void qeth_free_cq(struct qeth_card *card)
 392 {
 393         if (card->qdio.c_q) {
 394                 --card->qdio.no_in_queues;
 395                 qeth_free_qdio_queue(card->qdio.c_q);
 396                 card->qdio.c_q = NULL;
 397         }
 398         kfree(card->qdio.out_bufstates);
 399         card->qdio.out_bufstates = NULL;
 400 }
 401
 402 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 403         int delayed) {
 404         enum iucv_tx_notify n;
 405
 406         switch (sbalf15) {
 407         case 0:
 408                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 409                 break;
 410         case 4:
 411         case 16:
 412         case 17:
 413         case 18:
 414                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 415                         TX_NOTIFY_UNREACHABLE;
 416                 break;
 417         default:
 418                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 419                         TX_NOTIFY_GENERALERROR;
 420                 break;
 421         }
 422
 423         return n;
 424 }
 425
 426 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 427         int bidx, int forced_cleanup)
 428 {
 429         if (q->card->options.cq != QETH_CQ_ENABLED)
 430                 return;
 431
 432         if (q->bufs[bidx]->next_pending != NULL) {
 433                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 434                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 435
 436                 while (c) {
 437                         if (forced_cleanup ||
 438                             atomic_read(&c->state) ==
 439                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 440                                 struct qeth_qdio_out_buffer *f = c;
 441                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 442                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 443                                 /* release here to avoid interleaving between
 444                                    outbound tasklet and inbound tasklet
 445                                    regarding notifications and lifecycle */
 446                                 qeth_release_skbs(c);
 447
 448                                 c = f->next_pending;
 449                                 WARN_ON_ONCE(head->next_pending != f);
 450                                 head->next_pending = c;
 451                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 452                         } else {
 453                                 head = c;
 454                                 c = c->next_pending;
 455                         }
 456
 457                 }
 458         }
 459         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 460                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 461                 /* for recovery situations */
 462                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 463                 qeth_init_qdio_out_buf(q, bidx);
 464                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 465         }
 466 }
 467
 468
 469 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 470                 unsigned long phys_aob_addr) {
 471         struct qaob *aob;
 472         struct qeth_qdio_out_buffer *buffer;
 473         enum iucv_tx_notify notification;
 474
 475         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 476         QETH_CARD_TEXT(card, 5, "haob");
 477         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 478         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 479         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 480
 481         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 482                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 483                 notification = TX_NOTIFY_OK;
 484         } else {
 485                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 486                                                         QETH_QDIO_BUF_PENDING);
 487                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 488                 notification = TX_NOTIFY_DELAYED_OK;
 489         }
 490
 491         if (aob->aorc != 0)  {
 492                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 493                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 494         }
 495         qeth_notify_skbs(buffer->q, buffer, notification);
 496
 497         buffer->aob = NULL;
 498         qeth_clear_output_buffer(buffer->q, buffer,
 499                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 500
 501         /* from here on: do not touch buffer anymore */
 502         qdio_release_aob(aob);
 503 }
 504
 505 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 506 {
 507         return card->options.cq == QETH_CQ_ENABLED &&
 508             card->qdio.c_q != NULL &&
 509             queue != 0 &&
 510             queue == card->qdio.no_in_queues - 1;
 511 }
 512
 513
 514 static int qeth_issue_next_read(struct qeth_card *card)
 515 {
 516         int rc;
 517         struct qeth_cmd_buffer *iob;
 518
 519         QETH_CARD_TEXT(card, 5, "issnxrd");
 520         if (card->read.state != CH_STATE_UP)
 521                 return -EIO;
 522         iob = qeth_get_buffer(&card->read);
 523         if (!iob) {
 524                 dev_warn(&card->gdev->dev, "The qeth device driver "
 525                         "failed to recover an error on the device\n");
 526                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 527                         "available\n", dev_name(&card->gdev->dev));
 528                 return -ENOMEM;
 529         }
 530         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 531         QETH_CARD_TEXT(card, 6, "noirqpnd");
 532         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 533                               (addr_t) iob, 0, 0);
 534         if (rc) {
 535                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 536                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 537                 atomic_set(&card->read.irq_pending, 0);
 538                 card->read_or_write_problem = 1;
 539                 qeth_schedule_recovery(card);
 540                 wake_up(&card->wait_q);
 541         }
 542         return rc;
 543 }
 544
 545 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 546 {
 547         struct qeth_reply *reply;
 548
 549         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 550         if (reply) {
 551                 atomic_set(&reply->refcnt, 1);
 552                 atomic_set(&reply->received, 0);
 553                 reply->card = card;
 554         }
 555         return reply;
 556 }
 557
 558 static void qeth_get_reply(struct qeth_reply *reply)
 559 {
 560         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 561         atomic_inc(&reply->refcnt);
 562 }
 563
 564 static void qeth_put_reply(struct qeth_reply *reply)
 565 {
 566         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 567         if (atomic_dec_and_test(&reply->refcnt))
 568                 kfree(reply);
 569 }
 570
 571 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 572                 struct qeth_card *card)
 573 {
 574         char *ipa_name;
 575         int com = cmd->hdr.command;
 576         ipa_name = qeth_get_ipa_cmd_name(com);
 577         if (rc)
 578                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 579                                 "x%X \"%s\"\n",
 580                                 ipa_name, com, dev_name(&card->gdev->dev),
 581                                 QETH_CARD_IFNAME(card), rc,
 582                                 qeth_get_ipa_msg(rc));
 583         else
 584                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 585                                 ipa_name, com, dev_name(&card->gdev->dev),
 586                                 QETH_CARD_IFNAME(card));
 587 }
 588
 589 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 590                 struct qeth_cmd_buffer *iob)
 591 {
 592         struct qeth_ipa_cmd *cmd = NULL;
 593
 594         QETH_CARD_TEXT(card, 5, "chkipad");
 595         if (IS_IPA(iob->data)) {
 596                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 597                 if (IS_IPA_REPLY(cmd)) {
 598                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 599                             cmd->hdr.command != IPA_CMD_DELCCID &&
 600                             cmd->hdr.command != IPA_CMD_MODCCID &&
 601                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 602                                 qeth_issue_ipa_msg(cmd,
 603                                                 cmd->hdr.return_code, card);
 604                         return cmd;
 605                 } else {
 606                         switch (cmd->hdr.command) {
 607                         case IPA_CMD_STOPLAN:
 608                                 if (cmd->hdr.return_code ==
 609                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 610                                         dev_err(&card->gdev->dev,
 611                                            "Interface %s is down because the "
 612                                            "adjacent port is no longer in "
 613                                            "reflective relay mode\n",
 614                                            QETH_CARD_IFNAME(card));
 615                                         qeth_close_dev(card);
 616                                 } else {
 617                                         dev_warn(&card->gdev->dev,
 618                                            "The link for interface %s on CHPID"
 619                                            " 0x%X failed\n",
 620                                            QETH_CARD_IFNAME(card),
 621                                            card->info.chpid);
 622                                         qeth_issue_ipa_msg(cmd,
 623                                                 cmd->hdr.return_code, card);
 624                                 }
 625                                 card->lan_online = 0;
 626                                 if (card->dev && netif_carrier_ok(card->dev))
 627                                         netif_carrier_off(card->dev);
 628                                 return NULL;
 629                         case IPA_CMD_STARTLAN:
 630                                 dev_info(&card->gdev->dev,
 631                                            "The link for %s on CHPID 0x%X has"
 632                                            " been restored\n",
 633                                            QETH_CARD_IFNAME(card),
 634                                            card->info.chpid);
 635                                 netif_carrier_on(card->dev);
 636                                 card->lan_online = 1;
 637                                 if (card->info.hwtrap)
 638                                         card->info.hwtrap = 2;
 639                                 qeth_schedule_recovery(card);
 640                                 return NULL;
 641                         case IPA_CMD_SETBRIDGEPORT:
 642                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 643                                 if (card->discipline->control_event_handler
 644                                                                 (card, cmd))
 645                                         return cmd;
 646                                 else
 647                                         return NULL;
 648                         case IPA_CMD_MODCCID:
 649                                 return cmd;
 650                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 651                                 QETH_CARD_TEXT(card, 3, "irla");
 652                                 break;
 653                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 654                                 QETH_CARD_TEXT(card, 3, "urla");
 655                                 break;
 656                         default:
 657                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 658                                            "but not a reply!\n");
 659                                 break;
 660                         }
 661                 }
 662         }
 663         return cmd;
 664 }
 665
 666 void qeth_clear_ipacmd_list(struct qeth_card *card)
 667 {
 668         struct qeth_reply *reply, *r;
 669         unsigned long flags;
 670
 671         QETH_CARD_TEXT(card, 4, "clipalst");
 672
 673         spin_lock_irqsave(&card->lock, flags);
 674         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 675                 qeth_get_reply(reply);
 676                 reply->rc = -EIO;
 677                 atomic_inc(&reply->received);
 678                 list_del_init(&reply->list);
 679                 wake_up(&reply->wait_q);
 680                 qeth_put_reply(reply);
 681         }
 682         spin_unlock_irqrestore(&card->lock, flags);
 683         atomic_set(&card->write.irq_pending, 0);
 684 }
 685 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 686
 687 static int qeth_check_idx_response(struct qeth_card *card,
 688         unsigned char *buffer)
 689 {
 690         if (!buffer)
 691                 return 0;
 692
 693         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 694         if ((buffer[2] & 0xc0) == 0xc0) {
 695                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 696                            "with cause code 0x%02x%s\n",
 697                            buffer[4],
 698                            ((buffer[4] == 0x22) ?
 699                             " -- try another portname" : ""));
 700                 QETH_CARD_TEXT(card, 2, "ckidxres");
 701                 QETH_CARD_TEXT(card, 2, " idxterm");
 702                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 703                 if (buffer[4] == 0xf6) {
 704                         dev_err(&card->gdev->dev,
 705                         "The qeth device is not configured "
 706                         "for the OSI layer required by z/VM\n");
 707                         return -EPERM;
 708                 }
 709                 return -EIO;
 710         }
 711         return 0;
 712 }
 713
 714 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 715                 __u32 len)
 716 {
 717         struct qeth_card *card;
 718
 719         card = CARD_FROM_CDEV(channel->ccwdev);
 720         QETH_CARD_TEXT(card, 4, "setupccw");
 721         if (channel == &card->read)
 722                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 723         else
 724                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 725         channel->ccw.count = len;
 726         channel->ccw.cda = (__u32) __pa(iob);
 727 }
 728
 729 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 730 {
 731         __u8 index;
 732
 733         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 734         index = channel->io_buf_no;
 735         do {
 736                 if (channel->iob[index].state == BUF_STATE_FREE) {
 737                         channel->iob[index].state = BUF_STATE_LOCKED;
 738                         channel->io_buf_no = (channel->io_buf_no + 1) %
 739                                 QETH_CMD_BUFFER_NO;
 740                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 741                         return channel->iob + index;
 742                 }
 743                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 744         } while (index != channel->io_buf_no);
 745
 746         return NULL;
 747 }
 748
 749 void qeth_release_buffer(struct qeth_channel *channel,
 750                 struct qeth_cmd_buffer *iob)
 751 {
 752         unsigned long flags;
 753
 754         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 755         spin_lock_irqsave(&channel->iob_lock, flags);
 756         memset(iob->data, 0, QETH_BUFSIZE);
 757         iob->state = BUF_STATE_FREE;
 758         iob->callback = qeth_send_control_data_cb;
 759         iob->rc = 0;
 760         spin_unlock_irqrestore(&channel->iob_lock, flags);
 761         wake_up(&channel->wait_q);
 762 }
 763 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 764
 765 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 766 {
 767         struct qeth_cmd_buffer *buffer = NULL;
 768         unsigned long flags;
 769
 770         spin_lock_irqsave(&channel->iob_lock, flags);
 771         buffer = __qeth_get_buffer(channel);
 772         spin_unlock_irqrestore(&channel->iob_lock, flags);
 773         return buffer;
 774 }
 775
 776 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 777 {
 778         struct qeth_cmd_buffer *buffer;
 779         wait_event(channel->wait_q,
 780                    ((buffer = qeth_get_buffer(channel)) != NULL));
 781         return buffer;
 782 }
 783 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 784
 785 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 786 {
 787         int cnt;
 788
 789         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 790                 qeth_release_buffer(channel, &channel->iob[cnt]);
 791         channel->buf_no = 0;
 792         channel->io_buf_no = 0;
 793 }
 794 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 795
 796 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 797                   struct qeth_cmd_buffer *iob)
 798 {
 799         struct qeth_card *card;
 800         struct qeth_reply *reply, *r;
 801         struct qeth_ipa_cmd *cmd;
 802         unsigned long flags;
 803         int keep_reply;
 804         int rc = 0;
 805
 806         card = CARD_FROM_CDEV(channel->ccwdev);
 807         QETH_CARD_TEXT(card, 4, "sndctlcb");
 808         rc = qeth_check_idx_response(card, iob->data);
 809         switch (rc) {
 810         case 0:
 811                 break;
 812         case -EIO:
 813                 qeth_clear_ipacmd_list(card);
 814                 qeth_schedule_recovery(card);
 815                 /* fall through */
 816         default:
 817                 goto out;
 818         }
 819
 820         cmd = qeth_check_ipa_data(card, iob);
 821         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 822                 goto out;
 823         /*in case of OSN : check if cmd is set */
 824         if (card->info.type == QETH_CARD_TYPE_OSN &&
 825             cmd &&
 826             cmd->hdr.command != IPA_CMD_STARTLAN &&
 827             card->osn_info.assist_cb != NULL) {
 828                 card->osn_info.assist_cb(card->dev, cmd);
 829                 goto out;
 830         }
 831
 832         spin_lock_irqsave(&card->lock, flags);
 833         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 834                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 835                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 836                         qeth_get_reply(reply);
 837                         list_del_init(&reply->list);
 838                         spin_unlock_irqrestore(&card->lock, flags);
 839                         keep_reply = 0;
 840                         if (reply->callback != NULL) {
 841                                 if (cmd) {
 842                                         reply->offset = (__u16)((char *)cmd -
 843                                                         (char *)iob->data);
 844                                         keep_reply = reply->callback(card,
 845                                                         reply,
 846                                                         (unsigned long)cmd);
 847                                 } else
 848                                         keep_reply = reply->callback(card,
 849                                                         reply,
 850                                                         (unsigned long)iob);
 851                         }
 852                         if (cmd)
 853                                 reply->rc = (u16) cmd->hdr.return_code;
 854                         else if (iob->rc)
 855                                 reply->rc = iob->rc;
 856                         if (keep_reply) {
 857                                 spin_lock_irqsave(&card->lock, flags);
 858                                 list_add_tail(&reply->list,
 859                                               &card->cmd_waiter_list);
 860                                 spin_unlock_irqrestore(&card->lock, flags);
 861                         } else {
 862                                 atomic_inc(&reply->received);
 863                                 wake_up(&reply->wait_q);
 864                         }
 865                         qeth_put_reply(reply);
 866                         goto out;
 867                 }
 868         }
 869         spin_unlock_irqrestore(&card->lock, flags);
 870 out:
 871         memcpy(&card->seqno.pdu_hdr_ack,
 872                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 873                 QETH_SEQ_NO_LENGTH);
 874         qeth_release_buffer(channel, iob);
 875 }
 876
 877 static int qeth_setup_channel(struct qeth_channel *channel)
 878 {
 879         int cnt;
 880
 881         QETH_DBF_TEXT(SETUP, 2, "setupch");
 882         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 883                 channel->iob[cnt].data =
 884                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 885                 if (channel->iob[cnt].data == NULL)
 886                         break;
 887                 channel->iob[cnt].state = BUF_STATE_FREE;
 888                 channel->iob[cnt].channel = channel;
 889                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 890                 channel->iob[cnt].rc = 0;
 891         }
 892         if (cnt < QETH_CMD_BUFFER_NO) {
 893                 while (cnt-- > 0)
 894                         kfree(channel->iob[cnt].data);
 895                 return -ENOMEM;
 896         }
 897         channel->buf_no = 0;
 898         channel->io_buf_no = 0;
 899         atomic_set(&channel->irq_pending, 0);
 900         spin_lock_init(&channel->iob_lock);
 901
 902         init_waitqueue_head(&channel->wait_q);
 903         return 0;
 904 }
 905
 906 static int qeth_set_thread_start_bit(struct qeth_card *card,
 907                 unsigned long thread)
 908 {
 909         unsigned long flags;
 910
 911         spin_lock_irqsave(&card->thread_mask_lock, flags);
 912         if (!(card->thread_allowed_mask & thread) ||
 913               (card->thread_start_mask & thread)) {
 914                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 915                 return -EPERM;
 916         }
 917         card->thread_start_mask |= thread;
 918         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 919         return 0;
 920 }
 921
 922 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 923 {
 924         unsigned long flags;
 925
 926         spin_lock_irqsave(&card->thread_mask_lock, flags);
 927         card->thread_start_mask &= ~thread;
 928         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 929         wake_up(&card->wait_q);
 930 }
 931 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 932
 933 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 934 {
 935         unsigned long flags;
 936
 937         spin_lock_irqsave(&card->thread_mask_lock, flags);
 938         card->thread_running_mask &= ~thread;
 939         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 940         wake_up(&card->wait_q);
 941 }
 942 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 943
 944 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 945 {
 946         unsigned long flags;
 947         int rc = 0;
 948
 949         spin_lock_irqsave(&card->thread_mask_lock, flags);
 950         if (card->thread_start_mask & thread) {
 951                 if ((card->thread_allowed_mask & thread) &&
 952                     !(card->thread_running_mask & thread)) {
 953                         rc = 1;
 954                         card->thread_start_mask &= ~thread;
 955                         card->thread_running_mask |= thread;
 956                 } else
 957                         rc = -EPERM;
 958         }
 959         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 960         return rc;
 961 }
 962
 963 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 964 {
 965         int rc = 0;
 966
 967         wait_event(card->wait_q,
 968                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 969         return rc;
 970 }
 971 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 972
 973 void qeth_schedule_recovery(struct qeth_card *card)
 974 {
 975         QETH_CARD_TEXT(card, 2, "startrec");
 976         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 977                 schedule_work(&card->kernel_thread_starter);
 978 }
 979 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 980
 981 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 982 {
 983         int dstat, cstat;
 984         char *sense;
 985         struct qeth_card *card;
 986
 987         sense = (char *) irb->ecw;
 988         cstat = irb->scsw.cmd.cstat;
 989         dstat = irb->scsw.cmd.dstat;
 990         card = CARD_FROM_CDEV(cdev);
 991
 992         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 993                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 994                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 995                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 996                 dev_warn(&cdev->dev, "The qeth device driver "
 997                         "failed to recover an error on the device\n");
 998                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 999                         dev_name(&cdev->dev), dstat, cstat);
1000                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1001                                 16, 1, irb, 64, 1);
1002                 return 1;
1003         }
1004
1005         if (dstat & DEV_STAT_UNIT_CHECK) {
1006                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1007                     SENSE_RESETTING_EVENT_FLAG) {
1008                         QETH_CARD_TEXT(card, 2, "REVIND");
1009                         return 1;
1010                 }
1011                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1012                     SENSE_COMMAND_REJECT_FLAG) {
1013                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1014                         return 1;
1015                 }
1016                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1017                         QETH_CARD_TEXT(card, 2, "AFFE");
1018                         return 1;
1019                 }
1020                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1021                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1022                         return 0;
1023                 }
1024                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1025                         return 1;
1026         }
1027         return 0;
1028 }
1029
1030 static long __qeth_check_irb_error(struct ccw_device *cdev,
1031                 unsigned long intparm, struct irb *irb)
1032 {
1033         struct qeth_card *card;
1034
1035         card = CARD_FROM_CDEV(cdev);
1036
1037         if (!card || !IS_ERR(irb))
1038                 return 0;
1039
1040         switch (PTR_ERR(irb)) {
1041         case -EIO:
1042                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1043                         dev_name(&cdev->dev));
1044                 QETH_CARD_TEXT(card, 2, "ckirberr");
1045                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1046                 break;
1047         case -ETIMEDOUT:
1048                 dev_warn(&cdev->dev, "A hardware operation timed out"
1049                         " on the device\n");
1050                 QETH_CARD_TEXT(card, 2, "ckirberr");
1051                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1052                 if (intparm == QETH_RCD_PARM) {
1053                         if (card->data.ccwdev == cdev) {
1054                                 card->data.state = CH_STATE_DOWN;
1055                                 wake_up(&card->wait_q);
1056                         }
1057                 }
1058                 break;
1059         default:
1060                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1061                         dev_name(&cdev->dev), PTR_ERR(irb));
1062                 QETH_CARD_TEXT(card, 2, "ckirberr");
1063                 QETH_CARD_TEXT(card, 2, "  rc???");
1064         }
1065         return PTR_ERR(irb);
1066 }
1067
1068 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1069                 struct irb *irb)
1070 {
1071         int rc;
1072         int cstat, dstat;
1073         struct qeth_cmd_buffer *buffer;
1074         struct qeth_channel *channel;
1075         struct qeth_card *card;
1076         struct qeth_cmd_buffer *iob;
1077         __u8 index;
1078
1079         if (__qeth_check_irb_error(cdev, intparm, irb))
1080                 return;
1081         cstat = irb->scsw.cmd.cstat;
1082         dstat = irb->scsw.cmd.dstat;
1083
1084         card = CARD_FROM_CDEV(cdev);
1085         if (!card)
1086                 return;
1087
1088         QETH_CARD_TEXT(card, 5, "irq");
1089
1090         if (card->read.ccwdev == cdev) {
1091                 channel = &card->read;
1092                 QETH_CARD_TEXT(card, 5, "read");
1093         } else if (card->write.ccwdev == cdev) {
1094                 channel = &card->write;
1095                 QETH_CARD_TEXT(card, 5, "write");
1096         } else {
1097                 channel = &card->data;
1098                 QETH_CARD_TEXT(card, 5, "data");
1099         }
1100         atomic_set(&channel->irq_pending, 0);
1101
1102         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1103                 channel->state = CH_STATE_STOPPED;
1104
1105         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1106                 channel->state = CH_STATE_HALTED;
1107
1108         /*let's wake up immediately on data channel*/
1109         if ((channel == &card->data) && (intparm != 0) &&
1110             (intparm != QETH_RCD_PARM))
1111                 goto out;
1112
1113         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1114                 QETH_CARD_TEXT(card, 6, "clrchpar");
1115                 /* we don't have to handle this further */
1116                 intparm = 0;
1117         }
1118         if (intparm == QETH_HALT_CHANNEL_PARM) {
1119                 QETH_CARD_TEXT(card, 6, "hltchpar");
1120                 /* we don't have to handle this further */
1121                 intparm = 0;
1122         }
1123         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1124             (dstat & DEV_STAT_UNIT_CHECK) ||
1125             (cstat)) {
1126                 if (irb->esw.esw0.erw.cons) {
1127                         dev_warn(&channel->ccwdev->dev,
1128                                 "The qeth device driver failed to recover "
1129                                 "an error on the device\n");
1130                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1131                                 "0x%X dstat 0x%X\n",
1132                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1133                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1134                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1135                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1136                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1137                 }
1138                 if (intparm == QETH_RCD_PARM) {
1139                         channel->state = CH_STATE_DOWN;
1140                         goto out;
1141                 }
1142                 rc = qeth_get_problem(cdev, irb);
1143                 if (rc) {
1144                         qeth_clear_ipacmd_list(card);
1145                         qeth_schedule_recovery(card);
1146                         goto out;
1147                 }
1148         }
1149
1150         if (intparm == QETH_RCD_PARM) {
1151                 channel->state = CH_STATE_RCD_DONE;
1152                 goto out;
1153         }
1154         if (intparm) {
1155                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1156                 buffer->state = BUF_STATE_PROCESSED;
1157         }
1158         if (channel == &card->data)
1159                 return;
1160         if (channel == &card->read &&
1161             channel->state == CH_STATE_UP)
1162                 qeth_issue_next_read(card);
1163
1164         iob = channel->iob;
1165         index = channel->buf_no;
1166         while (iob[index].state == BUF_STATE_PROCESSED) {
1167                 if (iob[index].callback != NULL)
1168                         iob[index].callback(channel, iob + index);
1169
1170                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1171         }
1172         channel->buf_no = index;
1173 out:
1174         wake_up(&card->wait_q);
1175         return;
1176 }
1177
1178 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1179                 struct qeth_qdio_out_buffer *buf,
1180                 enum iucv_tx_notify notification)
1181 {
1182         struct sk_buff *skb;
1183
1184         if (skb_queue_empty(&buf->skb_list))
1185                 goto out;
1186         skb = skb_peek(&buf->skb_list);
1187         while (skb) {
1188                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1189                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1190                 if (skb->protocol == ETH_P_AF_IUCV) {
1191                         if (skb->sk) {
1192                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1193                                 iucv->sk_txnotify(skb, notification);
1194                         }
1195                 }
1196                 if (skb_queue_is_last(&buf->skb_list, skb))
1197                         skb = NULL;
1198                 else
1199                         skb = skb_queue_next(&buf->skb_list, skb);
1200         }
1201 out:
1202         return;
1203 }
1204
1205 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1206 {
1207         struct sk_buff *skb;
1208         struct iucv_sock *iucv;
1209         int notify_general_error = 0;
1210
1211         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1212                 notify_general_error = 1;
1213
1214         /* release may never happen from within CQ tasklet scope */
1215         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1216
1217         skb = skb_dequeue(&buf->skb_list);
1218         while (skb) {
1219                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1220                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1221                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1222                         if (skb->sk) {
1223                                 iucv = iucv_sk(skb->sk);
1224                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1225                         }
1226                 }
1227                 atomic_dec(&skb->users);
1228                 dev_kfree_skb_any(skb);
1229                 skb = skb_dequeue(&buf->skb_list);
1230         }
1231 }
1232
1233 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1234                 struct qeth_qdio_out_buffer *buf,
1235                 enum qeth_qdio_buffer_states newbufstate)
1236 {
1237         int i;
1238
1239         /* is PCI flag set on buffer? */
1240         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1241                 atomic_dec(&queue->set_pci_flags_count);
1242
1243         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1244                 qeth_release_skbs(buf);
1245         }
1246         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1247                 if (buf->buffer->element[i].addr && buf->is_header[i])
1248                         kmem_cache_free(qeth_core_header_cache,
1249                                 buf->buffer->element[i].addr);
1250                 buf->is_header[i] = 0;
1251                 buf->buffer->element[i].length = 0;
1252                 buf->buffer->element[i].addr = NULL;
1253                 buf->buffer->element[i].eflags = 0;
1254                 buf->buffer->element[i].sflags = 0;
1255         }
1256         buf->buffer->element[15].eflags = 0;
1257         buf->buffer->element[15].sflags = 0;
1258         buf->next_element_to_fill = 0;
1259         atomic_set(&buf->state, newbufstate);
1260 }
1261
1262 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1263 {
1264         int j;
1265
1266         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1267                 if (!q->bufs[j])
1268                         continue;
1269                 qeth_cleanup_handled_pending(q, j, 1);
1270                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1271                 if (free) {
1272                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1273                         q->bufs[j] = NULL;
1274                 }
1275         }
1276 }
1277
1278 void qeth_clear_qdio_buffers(struct qeth_card *card)
1279 {
1280         int i;
1281
1282         QETH_CARD_TEXT(card, 2, "clearqdbf");
1283         /* clear outbound buffers to free skbs */
1284         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1285                 if (card->qdio.out_qs[i]) {
1286                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1287                 }
1288         }
1289 }
1290 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1291
1292 static void qeth_free_buffer_pool(struct qeth_card *card)
1293 {
1294         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1295         int i = 0;
1296         list_for_each_entry_safe(pool_entry, tmp,
1297                                  &card->qdio.init_pool.entry_list, init_list){
1298                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1299                         free_page((unsigned long)pool_entry->elements[i]);
1300                 list_del(&pool_entry->init_list);
1301                 kfree(pool_entry);
1302         }
1303 }
1304
1305 static void qeth_clean_channel(struct qeth_channel *channel)
1306 {
1307         int cnt;
1308
1309         QETH_DBF_TEXT(SETUP, 2, "freech");
1310         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1311                 kfree(channel->iob[cnt].data);
1312 }
1313
1314 static void qeth_set_single_write_queues(struct qeth_card *card)
1315 {
1316         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1317             (card->qdio.no_out_queues == 4))
1318                 qeth_free_qdio_buffers(card);
1319
1320         card->qdio.no_out_queues = 1;
1321         if (card->qdio.default_out_queue != 0)
1322                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1323
1324         card->qdio.default_out_queue = 0;
1325 }
1326
1327 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1328 {
1329         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1330             (card->qdio.no_out_queues == 1)) {
1331                 qeth_free_qdio_buffers(card);
1332                 card->qdio.default_out_queue = 2;
1333         }
1334         card->qdio.no_out_queues = 4;
1335 }
1336
1337 static void qeth_update_from_chp_desc(struct qeth_card *card)
1338 {
1339         struct ccw_device *ccwdev;
1340         struct channel_path_desc *chp_dsc;
1341
1342         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1343
1344         ccwdev = card->data.ccwdev;
1345         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1346         if (!chp_dsc)
1347                 goto out;
1348
1349         card->info.func_level = 0x4100 + chp_dsc->desc;
1350         if (card->info.type == QETH_CARD_TYPE_IQD)
1351                 goto out;
1352
1353         /* CHPP field bit 6 == 1 -> single queue */
1354         if ((chp_dsc->chpp & 0x02) == 0x02)
1355                 qeth_set_single_write_queues(card);
1356         else
1357                 qeth_set_multiple_write_queues(card);
1358 out:
1359         kfree(chp_dsc);
1360         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1361         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1362 }
1363
1364 static void qeth_init_qdio_info(struct qeth_card *card)
1365 {
1366         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1367         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1368         /* inbound */
1369         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1370         if (card->info.type == QETH_CARD_TYPE_IQD)
1371                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1372         else
1373                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1374         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1375         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1376         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1377 }
1378
1379 static void qeth_set_intial_options(struct qeth_card *card)
1380 {
1381         card->options.route4.type = NO_ROUTER;
1382         card->options.route6.type = NO_ROUTER;
1383         card->options.fake_broadcast = 0;
1384         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1385         card->options.performance_stats = 0;
1386         card->options.rx_sg_cb = QETH_RX_SG_CB;
1387         card->options.isolation = ISOLATION_MODE_NONE;
1388         card->options.cq = QETH_CQ_DISABLED;
1389 }
1390
1391 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1392 {
1393         unsigned long flags;
1394         int rc = 0;
1395
1396         spin_lock_irqsave(&card->thread_mask_lock, flags);
1397         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1398                         (u8) card->thread_start_mask,
1399                         (u8) card->thread_allowed_mask,
1400                         (u8) card->thread_running_mask);
1401         rc = (card->thread_start_mask & thread);
1402         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1403         return rc;
1404 }
1405
1406 static void qeth_start_kernel_thread(struct work_struct *work)
1407 {
1408         struct task_struct *ts;
1409         struct qeth_card *card = container_of(work, struct qeth_card,
1410                                         kernel_thread_starter);
1411         QETH_CARD_TEXT(card , 2, "strthrd");
1412
1413         if (card->read.state != CH_STATE_UP &&
1414             card->write.state != CH_STATE_UP)
1415                 return;
1416         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1417                 ts = kthread_run(card->discipline->recover, (void *)card,
1418                                 "qeth_recover");
1419                 if (IS_ERR(ts)) {
1420                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1421                         qeth_clear_thread_running_bit(card,
1422                                 QETH_RECOVER_THREAD);
1423                 }
1424         }
1425 }
1426
1427 static int qeth_setup_card(struct qeth_card *card)
1428 {
1429
1430         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1431         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1432
1433         card->read.state  = CH_STATE_DOWN;
1434         card->write.state = CH_STATE_DOWN;
1435         card->data.state  = CH_STATE_DOWN;
1436         card->state = CARD_STATE_DOWN;
1437         card->lan_online = 0;
1438         card->read_or_write_problem = 0;
1439         card->dev = NULL;
1440         spin_lock_init(&card->vlanlock);
1441         spin_lock_init(&card->mclock);
1442         spin_lock_init(&card->lock);
1443         spin_lock_init(&card->ip_lock);
1444         spin_lock_init(&card->thread_mask_lock);
1445         mutex_init(&card->conf_mutex);
1446         mutex_init(&card->discipline_mutex);
1447         card->thread_start_mask = 0;
1448         card->thread_allowed_mask = 0;
1449         card->thread_running_mask = 0;
1450         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1451         INIT_LIST_HEAD(&card->ip_list);
1452         INIT_LIST_HEAD(card->ip_tbd_list);
1453         INIT_LIST_HEAD(&card->cmd_waiter_list);
1454         init_waitqueue_head(&card->wait_q);
1455         /* initial options */
1456         qeth_set_intial_options(card);
1457         /* IP address takeover */
1458         INIT_LIST_HEAD(&card->ipato.entries);
1459         card->ipato.enabled = 0;
1460         card->ipato.invert4 = 0;
1461         card->ipato.invert6 = 0;
1462         /* init QDIO stuff */
1463         qeth_init_qdio_info(card);
1464         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1465         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1466         return 0;
1467 }
1468
1469 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1470 {
1471         struct qeth_card *card = container_of(slr, struct qeth_card,
1472                                         qeth_service_level);
1473         if (card->info.mcl_level[0])
1474                 seq_printf(m, "qeth: %s firmware level %s\n",
1475                         CARD_BUS_ID(card), card->info.mcl_level);
1476 }
1477
1478 static struct qeth_card *qeth_alloc_card(void)
1479 {
1480         struct qeth_card *card;
1481
1482         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1483         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1484         if (!card)
1485                 goto out;
1486         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1487         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1488         if (!card->ip_tbd_list) {
1489                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1490                 goto out_card;
1491         }
1492         if (qeth_setup_channel(&card->read))
1493                 goto out_ip;
1494         if (qeth_setup_channel(&card->write))
1495                 goto out_channel;
1496         card->options.layer2 = -1;
1497         card->qeth_service_level.seq_print = qeth_core_sl_print;
1498         register_service_level(&card->qeth_service_level);
1499         return card;
1500
1501 out_channel:
1502         qeth_clean_channel(&card->read);
1503 out_ip:
1504         kfree(card->ip_tbd_list);
1505 out_card:
1506         kfree(card);
1507 out:
1508         return NULL;
1509 }
1510
1511 static int qeth_determine_card_type(struct qeth_card *card)
1512 {
1513         int i = 0;
1514
1515         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1516
1517         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1518         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1519         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1520                 if ((CARD_RDEV(card)->id.dev_type ==
1521                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1522                     (CARD_RDEV(card)->id.dev_model ==
1523                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1524                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1525                         card->qdio.no_out_queues =
1526                                 known_devices[i][QETH_QUEUE_NO_IND];
1527                         card->qdio.no_in_queues = 1;
1528                         card->info.is_multicast_different =
1529                                 known_devices[i][QETH_MULTICAST_IND];
1530                         qeth_update_from_chp_desc(card);
1531                         return 0;
1532                 }
1533                 i++;
1534         }
1535         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1536         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1537                 "unknown type\n");
1538         return -ENOENT;
1539 }
1540
1541 static int qeth_clear_channel(struct qeth_channel *channel)
1542 {
1543         unsigned long flags;
1544         struct qeth_card *card;
1545         int rc;
1546
1547         card = CARD_FROM_CDEV(channel->ccwdev);
1548         QETH_CARD_TEXT(card, 3, "clearch");
1549         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1550         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1551         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1552
1553         if (rc)
1554                 return rc;
1555         rc = wait_event_interruptible_timeout(card->wait_q,
1556                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1557         if (rc == -ERESTARTSYS)
1558                 return rc;
1559         if (channel->state != CH_STATE_STOPPED)
1560                 return -ETIME;
1561         channel->state = CH_STATE_DOWN;
1562         return 0;
1563 }
1564
1565 static int qeth_halt_channel(struct qeth_channel *channel)
1566 {
1567         unsigned long flags;
1568         struct qeth_card *card;
1569         int rc;
1570
1571         card = CARD_FROM_CDEV(channel->ccwdev);
1572         QETH_CARD_TEXT(card, 3, "haltch");
1573         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1574         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1575         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1576
1577         if (rc)
1578                 return rc;
1579         rc = wait_event_interruptible_timeout(card->wait_q,
1580                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1581         if (rc == -ERESTARTSYS)
1582                 return rc;
1583         if (channel->state != CH_STATE_HALTED)
1584                 return -ETIME;
1585         return 0;
1586 }
1587
1588 static int qeth_halt_channels(struct qeth_card *card)
1589 {
1590         int rc1 = 0, rc2 = 0, rc3 = 0;
1591
1592         QETH_CARD_TEXT(card, 3, "haltchs");
1593         rc1 = qeth_halt_channel(&card->read);
1594         rc2 = qeth_halt_channel(&card->write);
1595         rc3 = qeth_halt_channel(&card->data);
1596         if (rc1)
1597                 return rc1;
1598         if (rc2)
1599                 return rc2;
1600         return rc3;
1601 }
1602
1603 static int qeth_clear_channels(struct qeth_card *card)
1604 {
1605         int rc1 = 0, rc2 = 0, rc3 = 0;
1606
1607         QETH_CARD_TEXT(card, 3, "clearchs");
1608         rc1 = qeth_clear_channel(&card->read);
1609         rc2 = qeth_clear_channel(&card->write);
1610         rc3 = qeth_clear_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_halt_card(struct qeth_card *card, int halt)
1619 {
1620         int rc = 0;
1621
1622         QETH_CARD_TEXT(card, 3, "clhacrd");
1623
1624         if (halt)
1625                 rc = qeth_halt_channels(card);
1626         if (rc)
1627                 return rc;
1628         return qeth_clear_channels(card);
1629 }
1630
1631 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1632 {
1633         int rc = 0;
1634
1635         QETH_CARD_TEXT(card, 3, "qdioclr");
1636         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1637                 QETH_QDIO_CLEANING)) {
1638         case QETH_QDIO_ESTABLISHED:
1639                 if (card->info.type == QETH_CARD_TYPE_IQD)
1640                         rc = qdio_shutdown(CARD_DDEV(card),
1641                                 QDIO_FLAG_CLEANUP_USING_HALT);
1642                 else
1643                         rc = qdio_shutdown(CARD_DDEV(card),
1644                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1645                 if (rc)
1646                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1647                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1648                 break;
1649         case QETH_QDIO_CLEANING:
1650                 return rc;
1651         default:
1652                 break;
1653         }
1654         rc = qeth_clear_halt_card(card, use_halt);
1655         if (rc)
1656                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1657         card->state = CARD_STATE_DOWN;
1658         return rc;
1659 }
1660 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1661
1662 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1663                                int *length)
1664 {
1665         struct ciw *ciw;
1666         char *rcd_buf;
1667         int ret;
1668         struct qeth_channel *channel = &card->data;
1669         unsigned long flags;
1670
1671         /*
1672          * scan for RCD command in extended SenseID data
1673          */
1674         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1675         if (!ciw || ciw->cmd == 0)
1676                 return -EOPNOTSUPP;
1677         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1678         if (!rcd_buf)
1679                 return -ENOMEM;
1680
1681         channel->ccw.cmd_code = ciw->cmd;
1682         channel->ccw.cda = (__u32) __pa(rcd_buf);
1683         channel->ccw.count = ciw->count;
1684         channel->ccw.flags = CCW_FLAG_SLI;
1685         channel->state = CH_STATE_RCD;
1686         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1687         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1688                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1689                                        QETH_RCD_TIMEOUT);
1690         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1691         if (!ret)
1692                 wait_event(card->wait_q,
1693                            (channel->state == CH_STATE_RCD_DONE ||
1694                             channel->state == CH_STATE_DOWN));
1695         if (channel->state == CH_STATE_DOWN)
1696                 ret = -EIO;
1697         else
1698                 channel->state = CH_STATE_DOWN;
1699         if (ret) {
1700                 kfree(rcd_buf);
1701                 *buffer = NULL;
1702                 *length = 0;
1703         } else {
1704                 *length = ciw->count;
1705                 *buffer = rcd_buf;
1706         }
1707         return ret;
1708 }
1709
1710 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1711 {
1712         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1713         card->info.chpid = prcd[30];
1714         card->info.unit_addr2 = prcd[31];
1715         card->info.cula = prcd[63];
1716         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1717                                (prcd[0x11] == _ascebc['M']));
1718 }
1719
1720 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1721 {
1722         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1723
1724         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1725             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1726                 card->info.blkt.time_total = 0;
1727                 card->info.blkt.inter_packet = 0;
1728                 card->info.blkt.inter_packet_jumbo = 0;
1729         } else {
1730                 card->info.blkt.time_total = 250;
1731                 card->info.blkt.inter_packet = 5;
1732                 card->info.blkt.inter_packet_jumbo = 15;
1733         }
1734 }
1735
1736 static void qeth_init_tokens(struct qeth_card *card)
1737 {
1738         card->token.issuer_rm_w = 0x00010103UL;
1739         card->token.cm_filter_w = 0x00010108UL;
1740         card->token.cm_connection_w = 0x0001010aUL;
1741         card->token.ulp_filter_w = 0x0001010bUL;
1742         card->token.ulp_connection_w = 0x0001010dUL;
1743 }
1744
1745 static void qeth_init_func_level(struct qeth_card *card)
1746 {
1747         switch (card->info.type) {
1748         case QETH_CARD_TYPE_IQD:
1749                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1750                 break;
1751         case QETH_CARD_TYPE_OSD:
1752         case QETH_CARD_TYPE_OSN:
1753                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1754                 break;
1755         default:
1756                 break;
1757         }
1758 }
1759
1760 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1761                 void (*idx_reply_cb)(struct qeth_channel *,
1762                         struct qeth_cmd_buffer *))
1763 {
1764         struct qeth_cmd_buffer *iob;
1765         unsigned long flags;
1766         int rc;
1767         struct qeth_card *card;
1768
1769         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1770         card = CARD_FROM_CDEV(channel->ccwdev);
1771         iob = qeth_get_buffer(channel);
1772         iob->callback = idx_reply_cb;
1773         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1774         channel->ccw.count = QETH_BUFSIZE;
1775         channel->ccw.cda = (__u32) __pa(iob->data);
1776
1777         wait_event(card->wait_q,
1778                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1779         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1780         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1781         rc = ccw_device_start(channel->ccwdev,
1782                               &channel->ccw, (addr_t) iob, 0, 0);
1783         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1784
1785         if (rc) {
1786                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1787                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1788                 atomic_set(&channel->irq_pending, 0);
1789                 wake_up(&card->wait_q);
1790                 return rc;
1791         }
1792         rc = wait_event_interruptible_timeout(card->wait_q,
1793                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1794         if (rc == -ERESTARTSYS)
1795                 return rc;
1796         if (channel->state != CH_STATE_UP) {
1797                 rc = -ETIME;
1798                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1799                 qeth_clear_cmd_buffers(channel);
1800         } else
1801                 rc = 0;
1802         return rc;
1803 }
1804
1805 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1806                 void (*idx_reply_cb)(struct qeth_channel *,
1807                         struct qeth_cmd_buffer *))
1808 {
1809         struct qeth_card *card;
1810         struct qeth_cmd_buffer *iob;
1811         unsigned long flags;
1812         __u16 temp;
1813         __u8 tmp;
1814         int rc;
1815         struct ccw_dev_id temp_devid;
1816
1817         card = CARD_FROM_CDEV(channel->ccwdev);
1818
1819         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1820
1821         iob = qeth_get_buffer(channel);
1822         iob->callback = idx_reply_cb;
1823         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1824         channel->ccw.count = IDX_ACTIVATE_SIZE;
1825         channel->ccw.cda = (__u32) __pa(iob->data);
1826         if (channel == &card->write) {
1827                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1828                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1829                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1830                 card->seqno.trans_hdr++;
1831         } else {
1832                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1833                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1834                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1835         }
1836         tmp = ((__u8)card->info.portno) | 0x80;
1837         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1838         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1839                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1840         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1841                &card->info.func_level, sizeof(__u16));
1842         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1843         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1844         temp = (card->info.cula << 8) + card->info.unit_addr2;
1845         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1846
1847         wait_event(card->wait_q,
1848                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1849         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1850         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1851         rc = ccw_device_start(channel->ccwdev,
1852                               &channel->ccw, (addr_t) iob, 0, 0);
1853         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1854
1855         if (rc) {
1856                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1857                         rc);
1858                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1859                 atomic_set(&channel->irq_pending, 0);
1860                 wake_up(&card->wait_q);
1861                 return rc;
1862         }
1863         rc = wait_event_interruptible_timeout(card->wait_q,
1864                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1865         if (rc == -ERESTARTSYS)
1866                 return rc;
1867         if (channel->state != CH_STATE_ACTIVATING) {
1868                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1869                         " failed to recover an error on the device\n");
1870                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1871                         dev_name(&channel->ccwdev->dev));
1872                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1873                 qeth_clear_cmd_buffers(channel);
1874                 return -ETIME;
1875         }
1876         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1877 }
1878
1879 static int qeth_peer_func_level(int level)
1880 {
1881         if ((level & 0xff) == 8)
1882                 return (level & 0xff) + 0x400;
1883         if (((level >> 8) & 3) == 1)
1884                 return (level & 0xff) + 0x200;
1885         return level;
1886 }
1887
1888 static void qeth_idx_write_cb(struct qeth_channel *channel,
1889                 struct qeth_cmd_buffer *iob)
1890 {
1891         struct qeth_card *card;
1892         __u16 temp;
1893
1894         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1895
1896         if (channel->state == CH_STATE_DOWN) {
1897                 channel->state = CH_STATE_ACTIVATING;
1898                 goto out;
1899         }
1900         card = CARD_FROM_CDEV(channel->ccwdev);
1901
1902         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1903                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1904                         dev_err(&card->write.ccwdev->dev,
1905                                 "The adapter is used exclusively by another "
1906                                 "host\n");
1907                 else
1908                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1909                                 " negative reply\n",
1910                                 dev_name(&card->write.ccwdev->dev));
1911                 goto out;
1912         }
1913         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1914         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1915                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1916                         "function level mismatch (sent: 0x%x, received: "
1917                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1918                         card->info.func_level, temp);
1919                 goto out;
1920         }
1921         channel->state = CH_STATE_UP;
1922 out:
1923         qeth_release_buffer(channel, iob);
1924 }
1925
1926 static void qeth_idx_read_cb(struct qeth_channel *channel,
1927                 struct qeth_cmd_buffer *iob)
1928 {
1929         struct qeth_card *card;
1930         __u16 temp;
1931
1932         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1933         if (channel->state == CH_STATE_DOWN) {
1934                 channel->state = CH_STATE_ACTIVATING;
1935                 goto out;
1936         }
1937
1938         card = CARD_FROM_CDEV(channel->ccwdev);
1939         if (qeth_check_idx_response(card, iob->data))
1940                         goto out;
1941
1942         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1943                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1944                 case QETH_IDX_ACT_ERR_EXCL:
1945                         dev_err(&card->write.ccwdev->dev,
1946                                 "The adapter is used exclusively by another "
1947                                 "host\n");
1948                         break;
1949                 case QETH_IDX_ACT_ERR_AUTH:
1950                 case QETH_IDX_ACT_ERR_AUTH_USER:
1951                         dev_err(&card->read.ccwdev->dev,
1952                                 "Setting the device online failed because of "
1953                                 "insufficient authorization\n");
1954                         break;
1955                 default:
1956                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1957                                 " negative reply\n",
1958                                 dev_name(&card->read.ccwdev->dev));
1959                 }
1960                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1961                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1962                 goto out;
1963         }
1964
1965 /**
1966  *  * temporary fix for microcode bug
1967  *   * to revert it,replace OR by AND
1968  *    */
1969         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1970              (card->info.type == QETH_CARD_TYPE_OSD))
1971                 card->info.portname_required = 1;
1972
1973         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1974         if (temp != qeth_peer_func_level(card->info.func_level)) {
1975                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1976                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1977                         dev_name(&card->read.ccwdev->dev),
1978                         card->info.func_level, temp);
1979                 goto out;
1980         }
1981         memcpy(&card->token.issuer_rm_r,
1982                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1983                QETH_MPC_TOKEN_LENGTH);
1984         memcpy(&card->info.mcl_level[0],
1985                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1986         channel->state = CH_STATE_UP;
1987 out:
1988         qeth_release_buffer(channel, iob);
1989 }
1990
1991 void qeth_prepare_control_data(struct qeth_card *card, int len,
1992                 struct qeth_cmd_buffer *iob)
1993 {
1994         qeth_setup_ccw(&card->write, iob->data, len);
1995         iob->callback = qeth_release_buffer;
1996
1997         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1998                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1999         card->seqno.trans_hdr++;
2000         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2001                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2002         card->seqno.pdu_hdr++;
2003         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2004                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2005         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2006 }
2007 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2008
2009 int qeth_send_control_data(struct qeth_card *card, int len,
2010                 struct qeth_cmd_buffer *iob,
2011                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2012                         unsigned long),
2013                 void *reply_param)
2014 {
2015         int rc;
2016         unsigned long flags;
2017         struct qeth_reply *reply = NULL;
2018         unsigned long timeout, event_timeout;
2019         struct qeth_ipa_cmd *cmd;
2020
2021         QETH_CARD_TEXT(card, 2, "sendctl");
2022
2023         if (card->read_or_write_problem) {
2024                 qeth_release_buffer(iob->channel, iob);
2025                 return -EIO;
2026         }
2027         reply = qeth_alloc_reply(card);
2028         if (!reply) {
2029                 return -ENOMEM;
2030         }
2031         reply->callback = reply_cb;
2032         reply->param = reply_param;
2033         if (card->state == CARD_STATE_DOWN)
2034                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2035         else
2036                 reply->seqno = card->seqno.ipa++;
2037         init_waitqueue_head(&reply->wait_q);
2038         spin_lock_irqsave(&card->lock, flags);
2039         list_add_tail(&reply->list, &card->cmd_waiter_list);
2040         spin_unlock_irqrestore(&card->lock, flags);
2041         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2042
2043         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2044         qeth_prepare_control_data(card, len, iob);
2045
2046         if (IS_IPA(iob->data))
2047                 event_timeout = QETH_IPA_TIMEOUT;
2048         else
2049                 event_timeout = QETH_TIMEOUT;
2050         timeout = jiffies + event_timeout;
2051
2052         QETH_CARD_TEXT(card, 6, "noirqpnd");
2053         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2054         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2055                               (addr_t) iob, 0, 0);
2056         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2057         if (rc) {
2058                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2059                         "ccw_device_start rc = %i\n",
2060                         dev_name(&card->write.ccwdev->dev), rc);
2061                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2062                 spin_lock_irqsave(&card->lock, flags);
2063                 list_del_init(&reply->list);
2064                 qeth_put_reply(reply);
2065                 spin_unlock_irqrestore(&card->lock, flags);
2066                 qeth_release_buffer(iob->channel, iob);
2067                 atomic_set(&card->write.irq_pending, 0);
2068                 wake_up(&card->wait_q);
2069                 return rc;
2070         }
2071
2072         /* we have only one long running ipassist, since we can ensure
2073            process context of this command we can sleep */
2074         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2075         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2076             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2077                 if (!wait_event_timeout(reply->wait_q,
2078                     atomic_read(&reply->received), event_timeout))
2079                         goto time_err;
2080         } else {
2081                 while (!atomic_read(&reply->received)) {
2082                         if (time_after(jiffies, timeout))
2083                                 goto time_err;
2084                         cpu_relax();
2085                 }
2086         }
2087
2088         if (reply->rc == -EIO)
2089                 goto error;
2090         rc = reply->rc;
2091         qeth_put_reply(reply);
2092         return rc;
2093
2094 time_err:
2095         reply->rc = -ETIME;
2096         spin_lock_irqsave(&reply->card->lock, flags);
2097         list_del_init(&reply->list);
2098         spin_unlock_irqrestore(&reply->card->lock, flags);
2099         atomic_inc(&reply->received);
2100 error:
2101         atomic_set(&card->write.irq_pending, 0);
2102         qeth_release_buffer(iob->channel, iob);
2103         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2104         rc = reply->rc;
2105         qeth_put_reply(reply);
2106         return rc;
2107 }
2108 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2109
2110 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2111                 unsigned long data)
2112 {
2113         struct qeth_cmd_buffer *iob;
2114
2115         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2116
2117         iob = (struct qeth_cmd_buffer *) data;
2118         memcpy(&card->token.cm_filter_r,
2119                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2120                QETH_MPC_TOKEN_LENGTH);
2121         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2122         return 0;
2123 }
2124
2125 static int qeth_cm_enable(struct qeth_card *card)
2126 {
2127         int rc;
2128         struct qeth_cmd_buffer *iob;
2129
2130         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2131
2132         iob = qeth_wait_for_buffer(&card->write);
2133         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2134         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2135                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2136         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2137                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2138
2139         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2140                                     qeth_cm_enable_cb, NULL);
2141         return rc;
2142 }
2143
2144 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2145                 unsigned long data)
2146 {
2147
2148         struct qeth_cmd_buffer *iob;
2149
2150         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2151
2152         iob = (struct qeth_cmd_buffer *) data;
2153         memcpy(&card->token.cm_connection_r,
2154                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2155                QETH_MPC_TOKEN_LENGTH);
2156         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2157         return 0;
2158 }
2159
2160 static int qeth_cm_setup(struct qeth_card *card)
2161 {
2162         int rc;
2163         struct qeth_cmd_buffer *iob;
2164
2165         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2166
2167         iob = qeth_wait_for_buffer(&card->write);
2168         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2169         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2170                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2171         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2172                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2173         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2174                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2175         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2176                                     qeth_cm_setup_cb, NULL);
2177         return rc;
2178
2179 }
2180
2181 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2182 {
2183         switch (card->info.type) {
2184         case QETH_CARD_TYPE_UNKNOWN:
2185                 return 1500;
2186         case QETH_CARD_TYPE_IQD:
2187                 return card->info.max_mtu;
2188         case QETH_CARD_TYPE_OSD:
2189                 switch (card->info.link_type) {
2190                 case QETH_LINK_TYPE_HSTR:
2191                 case QETH_LINK_TYPE_LANE_TR:
2192                         return 2000;
2193                 default:
2194                         return card->options.layer2 ? 1500 : 1492;
2195                 }
2196         case QETH_CARD_TYPE_OSM:
2197         case QETH_CARD_TYPE_OSX:
2198                 return card->options.layer2 ? 1500 : 1492;
2199         default:
2200                 return 1500;
2201         }
2202 }
2203
2204 static inline int qeth_get_mtu_outof_framesize(int framesize)
2205 {
2206         switch (framesize) {
2207         case 0x4000:
2208                 return 8192;
2209         case 0x6000:
2210                 return 16384;
2211         case 0xa000:
2212                 return 32768;
2213         case 0xffff:
2214                 return 57344;
2215         default:
2216                 return 0;
2217         }
2218 }
2219
2220 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2221 {
2222         switch (card->info.type) {
2223         case QETH_CARD_TYPE_OSD:
2224         case QETH_CARD_TYPE_OSM:
2225         case QETH_CARD_TYPE_OSX:
2226         case QETH_CARD_TYPE_IQD:
2227                 return ((mtu >= 576) &&
2228                         (mtu <= card->info.max_mtu));
2229         case QETH_CARD_TYPE_OSN:
2230         case QETH_CARD_TYPE_UNKNOWN:
2231         default:
2232                 return 1;
2233         }
2234 }
2235
2236 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2237                 unsigned long data)
2238 {
2239
2240         __u16 mtu, framesize;
2241         __u16 len;
2242         __u8 link_type;
2243         struct qeth_cmd_buffer *iob;
2244
2245         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2246
2247         iob = (struct qeth_cmd_buffer *) data;
2248         memcpy(&card->token.ulp_filter_r,
2249                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2250                QETH_MPC_TOKEN_LENGTH);
2251         if (card->info.type == QETH_CARD_TYPE_IQD) {
2252                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2253                 mtu = qeth_get_mtu_outof_framesize(framesize);
2254                 if (!mtu) {
2255                         iob->rc = -EINVAL;
2256                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2257                         return 0;
2258                 }
2259                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2260                         /* frame size has changed */
2261                         if (card->dev &&
2262                             ((card->dev->mtu == card->info.initial_mtu) ||
2263                              (card->dev->mtu > mtu)))
2264                                 card->dev->mtu = mtu;
2265                         qeth_free_qdio_buffers(card);
2266                 }
2267                 card->info.initial_mtu = mtu;
2268                 card->info.max_mtu = mtu;
2269                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2270         } else {
2271                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2272                         iob->data);
2273                 card->info.initial_mtu = min(card->info.max_mtu,
2274                                         qeth_get_initial_mtu_for_card(card));
2275                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2276         }
2277
2278         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2279         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2280                 memcpy(&link_type,
2281                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2282                 card->info.link_type = link_type;
2283         } else
2284                 card->info.link_type = 0;
2285         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2286         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2287         return 0;
2288 }
2289
2290 static int qeth_ulp_enable(struct qeth_card *card)
2291 {
2292         int rc;
2293         char prot_type;
2294         struct qeth_cmd_buffer *iob;
2295
2296         /*FIXME: trace view callbacks*/
2297         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2298
2299         iob = qeth_wait_for_buffer(&card->write);
2300         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2301
2302         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2303                 (__u8) card->info.portno;
2304         if (card->options.layer2)
2305                 if (card->info.type == QETH_CARD_TYPE_OSN)
2306                         prot_type = QETH_PROT_OSN2;
2307                 else
2308                         prot_type = QETH_PROT_LAYER2;
2309         else
2310                 prot_type = QETH_PROT_TCPIP;
2311
2312         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2313         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2314                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2315         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2316                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2317         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2318                card->info.portname, 9);
2319         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2320                                     qeth_ulp_enable_cb, NULL);
2321         return rc;
2322
2323 }
2324
2325 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2326                 unsigned long data)
2327 {
2328         struct qeth_cmd_buffer *iob;
2329
2330         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2331
2332         iob = (struct qeth_cmd_buffer *) data;
2333         memcpy(&card->token.ulp_connection_r,
2334                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2335                QETH_MPC_TOKEN_LENGTH);
2336         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2337                      3)) {
2338                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2339                 dev_err(&card->gdev->dev, "A connection could not be "
2340                         "established because of an OLM limit\n");
2341                 iob->rc = -EMLINK;
2342         }
2343         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2344         return 0;
2345 }
2346
2347 static int qeth_ulp_setup(struct qeth_card *card)
2348 {
2349         int rc;
2350         __u16 temp;
2351         struct qeth_cmd_buffer *iob;
2352         struct ccw_dev_id dev_id;
2353
2354         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2355
2356         iob = qeth_wait_for_buffer(&card->write);
2357         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2358
2359         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2360                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2361         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2362                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2363         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2364                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2365
2366         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2367         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2368         temp = (card->info.cula << 8) + card->info.unit_addr2;
2369         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2370         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2371                                     qeth_ulp_setup_cb, NULL);
2372         return rc;
2373 }
2374
2375 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2376 {
2377         int rc;
2378         struct qeth_qdio_out_buffer *newbuf;
2379
2380         rc = 0;
2381         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2382         if (!newbuf) {
2383                 rc = -ENOMEM;
2384                 goto out;
2385         }
2386         newbuf->buffer = q->qdio_bufs[bidx];
2387         skb_queue_head_init(&newbuf->skb_list);
2388         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2389         newbuf->q = q;
2390         newbuf->aob = NULL;
2391         newbuf->next_pending = q->bufs[bidx];
2392         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2393         q->bufs[bidx] = newbuf;
2394         if (q->bufstates) {
2395                 q->bufstates[bidx].user = newbuf;
2396                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2397                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2398                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2399                                 (long) newbuf->next_pending);
2400         }
2401 out:
2402         return rc;
2403 }
2404
2405 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2406 {
2407         if (!q)
2408                 return;
2409
2410         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2411         kfree(q);
2412 }
2413
2414 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2415 {
2416         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2417
2418         if (!q)
2419                 return NULL;
2420
2421         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2422                 kfree(q);
2423                 return NULL;
2424         }
2425         return q;
2426 }
2427
2428 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2429 {
2430         int i, j;
2431
2432         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2433
2434         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2435                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2436                 return 0;
2437
2438         QETH_DBF_TEXT(SETUP, 2, "inq");
2439         card->qdio.in_q = qeth_alloc_qdio_queue();
2440         if (!card->qdio.in_q)
2441                 goto out_nomem;
2442
2443         /* inbound buffer pool */
2444         if (qeth_alloc_buffer_pool(card))
2445                 goto out_freeinq;
2446
2447         /* outbound */
2448         card->qdio.out_qs =
2449                 kzalloc(card->qdio.no_out_queues *
2450                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2451         if (!card->qdio.out_qs)
2452                 goto out_freepool;
2453         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2454                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2455                 if (!card->qdio.out_qs[i])
2456                         goto out_freeoutq;
2457                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2458                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2459                 card->qdio.out_qs[i]->queue_no = i;
2460                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2461                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2462                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2463                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2464                                 goto out_freeoutqbufs;
2465                 }
2466         }
2467
2468         /* completion */
2469         if (qeth_alloc_cq(card))
2470                 goto out_freeoutq;
2471
2472         return 0;
2473
2474 out_freeoutqbufs:
2475         while (j > 0) {
2476                 --j;
2477                 kmem_cache_free(qeth_qdio_outbuf_cache,
2478                                 card->qdio.out_qs[i]->bufs[j]);
2479                 card->qdio.out_qs[i]->bufs[j] = NULL;
2480         }
2481 out_freeoutq:
2482         while (i > 0) {
2483                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2484                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2485         }
2486         kfree(card->qdio.out_qs);
2487         card->qdio.out_qs = NULL;
2488 out_freepool:
2489         qeth_free_buffer_pool(card);
2490 out_freeinq:
2491         qeth_free_qdio_queue(card->qdio.in_q);
2492         card->qdio.in_q = NULL;
2493 out_nomem:
2494         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2495         return -ENOMEM;
2496 }
2497
2498 static void qeth_free_qdio_buffers(struct qeth_card *card)
2499 {
2500         int i, j;
2501
2502         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2503                 QETH_QDIO_UNINITIALIZED)
2504                 return;
2505
2506         qeth_free_cq(card);
2507         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2508         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2509                 if (card->qdio.in_q->bufs[j].rx_skb)
2510                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2511         }
2512         qeth_free_qdio_queue(card->qdio.in_q);
2513         card->qdio.in_q = NULL;
2514         /* inbound buffer pool */
2515         qeth_free_buffer_pool(card);
2516         /* free outbound qdio_qs */
2517         if (card->qdio.out_qs) {
2518                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2519                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2520                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2521                 }
2522                 kfree(card->qdio.out_qs);
2523                 card->qdio.out_qs = NULL;
2524         }
2525 }
2526
2527 static void qeth_create_qib_param_field(struct qeth_card *card,
2528                 char *param_field)
2529 {
2530
2531         param_field[0] = _ascebc['P'];
2532         param_field[1] = _ascebc['C'];
2533         param_field[2] = _ascebc['I'];
2534         param_field[3] = _ascebc['T'];
2535         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2536         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2537         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2538 }
2539
2540 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2541                 char *param_field)
2542 {
2543         param_field[16] = _ascebc['B'];
2544         param_field[17] = _ascebc['L'];
2545         param_field[18] = _ascebc['K'];
2546         param_field[19] = _ascebc['T'];
2547         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2548         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2549         *((unsigned int *) (&param_field[28])) =
2550                 card->info.blkt.inter_packet_jumbo;
2551 }
2552
2553 static int qeth_qdio_activate(struct qeth_card *card)
2554 {
2555         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2556         return qdio_activate(CARD_DDEV(card));
2557 }
2558
2559 static int qeth_dm_act(struct qeth_card *card)
2560 {
2561         int rc;
2562         struct qeth_cmd_buffer *iob;
2563
2564         QETH_DBF_TEXT(SETUP, 2, "dmact");
2565
2566         iob = qeth_wait_for_buffer(&card->write);
2567         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2568
2569         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2570                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2571         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2572                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2573         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2574         return rc;
2575 }
2576
2577 static int qeth_mpc_initialize(struct qeth_card *card)
2578 {
2579         int rc;
2580
2581         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2582
2583         rc = qeth_issue_next_read(card);
2584         if (rc) {
2585                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2586                 return rc;
2587         }
2588         rc = qeth_cm_enable(card);
2589         if (rc) {
2590                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2591                 goto out_qdio;
2592         }
2593         rc = qeth_cm_setup(card);
2594         if (rc) {
2595                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2596                 goto out_qdio;
2597         }
2598         rc = qeth_ulp_enable(card);
2599         if (rc) {
2600                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2601                 goto out_qdio;
2602         }
2603         rc = qeth_ulp_setup(card);
2604         if (rc) {
2605                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2606                 goto out_qdio;
2607         }
2608         rc = qeth_alloc_qdio_buffers(card);
2609         if (rc) {
2610                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2611                 goto out_qdio;
2612         }
2613         rc = qeth_qdio_establish(card);
2614         if (rc) {
2615                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2616                 qeth_free_qdio_buffers(card);
2617                 goto out_qdio;
2618         }
2619         rc = qeth_qdio_activate(card);
2620         if (rc) {
2621                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2622                 goto out_qdio;
2623         }
2624         rc = qeth_dm_act(card);
2625         if (rc) {
2626                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2627                 goto out_qdio;
2628         }
2629
2630         return 0;
2631 out_qdio:
2632         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2633         qdio_free(CARD_DDEV(card));
2634         return rc;
2635 }
2636
2637 static void qeth_print_status_with_portname(struct qeth_card *card)
2638 {
2639         char dbf_text[15];
2640         int i;
2641
2642         sprintf(dbf_text, "%s", card->info.portname + 1);
2643         for (i = 0; i < 8; i++)
2644                 dbf_text[i] =
2645                         (char) _ebcasc[(__u8) dbf_text[i]];
2646         dbf_text[8] = 0;
2647         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2648                "with link type %s (portname: %s)\n",
2649                qeth_get_cardname(card),
2650                (card->info.mcl_level[0]) ? " (level: " : "",
2651                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2652                (card->info.mcl_level[0]) ? ")" : "",
2653                qeth_get_cardname_short(card),
2654                dbf_text);
2655
2656 }
2657
2658 static void qeth_print_status_no_portname(struct qeth_card *card)
2659 {
2660         if (card->info.portname[0])
2661                 dev_info(&card->gdev->dev, "Device is a%s "
2662                        "card%s%s%s\nwith link type %s "
2663                        "(no portname needed by interface).\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         else
2670                 dev_info(&card->gdev->dev, "Device is a%s "
2671                        "card%s%s%s\nwith link type %s.\n",
2672                        qeth_get_cardname(card),
2673                        (card->info.mcl_level[0]) ? " (level: " : "",
2674                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2675                        (card->info.mcl_level[0]) ? ")" : "",
2676                        qeth_get_cardname_short(card));
2677 }
2678
2679 void qeth_print_status_message(struct qeth_card *card)
2680 {
2681         switch (card->info.type) {
2682         case QETH_CARD_TYPE_OSD:
2683         case QETH_CARD_TYPE_OSM:
2684         case QETH_CARD_TYPE_OSX:
2685                 /* VM will use a non-zero first character
2686                  * to indicate a HiperSockets like reporting
2687                  * of the level OSA sets the first character to zero
2688                  * */
2689                 if (!card->info.mcl_level[0]) {
2690                         sprintf(card->info.mcl_level, "%02x%02x",
2691                                 card->info.mcl_level[2],
2692                                 card->info.mcl_level[3]);
2693
2694                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2695                         break;
2696                 }
2697                 /* fallthrough */
2698         case QETH_CARD_TYPE_IQD:
2699                 if ((card->info.guestlan) ||
2700                     (card->info.mcl_level[0] & 0x80)) {
2701                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2702                                 card->info.mcl_level[0]];
2703                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2704                                 card->info.mcl_level[1]];
2705                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2706                                 card->info.mcl_level[2]];
2707                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2708                                 card->info.mcl_level[3]];
2709                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2710                 }
2711                 break;
2712         default:
2713                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2714         }
2715         if (card->info.portname_required)
2716                 qeth_print_status_with_portname(card);
2717         else
2718                 qeth_print_status_no_portname(card);
2719 }
2720 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2721
2722 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2723 {
2724         struct qeth_buffer_pool_entry *entry;
2725
2726         QETH_CARD_TEXT(card, 5, "inwrklst");
2727
2728         list_for_each_entry(entry,
2729                             &card->qdio.init_pool.entry_list, init_list) {
2730                 qeth_put_buffer_pool_entry(card, entry);
2731         }
2732 }
2733
2734 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2735                 struct qeth_card *card)
2736 {
2737         struct list_head *plh;
2738         struct qeth_buffer_pool_entry *entry;
2739         int i, free;
2740         struct page *page;
2741
2742         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2743                 return NULL;
2744
2745         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2746                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2747                 free = 1;
2748                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2749                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2750                                 free = 0;
2751                                 break;
2752                         }
2753                 }
2754                 if (free) {
2755                         list_del_init(&entry->list);
2756                         return entry;
2757                 }
2758         }
2759
2760         /* no free buffer in pool so take first one and swap pages */
2761         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2762                         struct qeth_buffer_pool_entry, list);
2763         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2764                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2765                         page = alloc_page(GFP_ATOMIC);
2766                         if (!page) {
2767                                 return NULL;
2768                         } else {
2769                                 free_page((unsigned long)entry->elements[i]);
2770                                 entry->elements[i] = page_address(page);
2771                                 if (card->options.performance_stats)
2772                                         card->perf_stats.sg_alloc_page_rx++;
2773                         }
2774                 }
2775         }
2776         list_del_init(&entry->list);
2777         return entry;
2778 }
2779
2780 static int qeth_init_input_buffer(struct qeth_card *card,
2781                 struct qeth_qdio_buffer *buf)
2782 {
2783         struct qeth_buffer_pool_entry *pool_entry;
2784         int i;
2785
2786         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2787                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2788                 if (!buf->rx_skb)
2789                         return 1;
2790         }
2791
2792         pool_entry = qeth_find_free_buffer_pool_entry(card);
2793         if (!pool_entry)
2794                 return 1;
2795
2796         /*
2797          * since the buffer is accessed only from the input_tasklet
2798          * there shouldn't be a need to synchronize; also, since we use
2799          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2800          * buffers
2801          */
2802
2803         buf->pool_entry = pool_entry;
2804         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2805                 buf->buffer->element[i].length = PAGE_SIZE;
2806                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2807                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2808                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2809                 else
2810                         buf->buffer->element[i].eflags = 0;
2811                 buf->buffer->element[i].sflags = 0;
2812         }
2813         return 0;
2814 }
2815
2816 int qeth_init_qdio_queues(struct qeth_card *card)
2817 {
2818         int i, j;
2819         int rc;
2820
2821         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2822
2823         /* inbound queue */
2824         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2825                            QDIO_MAX_BUFFERS_PER_Q);
2826         qeth_initialize_working_pool_list(card);
2827         /*give only as many buffers to hardware as we have buffer pool entries*/
2828         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2829                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2830         card->qdio.in_q->next_buf_to_init =
2831                 card->qdio.in_buf_pool.buf_count - 1;
2832         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2833                      card->qdio.in_buf_pool.buf_count - 1);
2834         if (rc) {
2835                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2836                 return rc;
2837         }
2838
2839         /* completion */
2840         rc = qeth_cq_init(card);
2841         if (rc) {
2842                 return rc;
2843         }
2844
2845         /* outbound queue */
2846         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2847                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2848                                    QDIO_MAX_BUFFERS_PER_Q);
2849                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2850                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2851                                         card->qdio.out_qs[i]->bufs[j],
2852                                         QETH_QDIO_BUF_EMPTY);
2853                 }
2854                 card->qdio.out_qs[i]->card = card;
2855                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2856                 card->qdio.out_qs[i]->do_pack = 0;
2857                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2858                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2859                 atomic_set(&card->qdio.out_qs[i]->state,
2860                            QETH_OUT_Q_UNLOCKED);
2861         }
2862         return 0;
2863 }
2864 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2865
2866 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2867 {
2868         switch (link_type) {
2869         case QETH_LINK_TYPE_HSTR:
2870                 return 2;
2871         default:
2872                 return 1;
2873         }
2874 }
2875
2876 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2877                 struct qeth_ipa_cmd *cmd, __u8 command,
2878                 enum qeth_prot_versions prot)
2879 {
2880         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2881         cmd->hdr.command = command;
2882         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2883         cmd->hdr.seqno = card->seqno.ipa;
2884         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2885         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2886         if (card->options.layer2)
2887                 cmd->hdr.prim_version_no = 2;
2888         else
2889                 cmd->hdr.prim_version_no = 1;
2890         cmd->hdr.param_count = 1;
2891         cmd->hdr.prot_version = prot;
2892         cmd->hdr.ipa_supported = 0;
2893         cmd->hdr.ipa_enabled = 0;
2894 }
2895
2896 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2897                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2898 {
2899         struct qeth_cmd_buffer *iob;
2900         struct qeth_ipa_cmd *cmd;
2901
2902         iob = qeth_wait_for_buffer(&card->write);
2903         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2904         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2905
2906         return iob;
2907 }
2908 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2909
2910 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2911                 char prot_type)
2912 {
2913         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2914         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2915         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2916                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2917 }
2918 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2919
2920 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2921                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2922                         unsigned long),
2923                 void *reply_param)
2924 {
2925         int rc;
2926         char prot_type;
2927
2928         QETH_CARD_TEXT(card, 4, "sendipa");
2929
2930         if (card->options.layer2)
2931                 if (card->info.type == QETH_CARD_TYPE_OSN)
2932                         prot_type = QETH_PROT_OSN2;
2933                 else
2934                         prot_type = QETH_PROT_LAYER2;
2935         else
2936                 prot_type = QETH_PROT_TCPIP;
2937         qeth_prepare_ipa_cmd(card, iob, prot_type);
2938         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2939                                                 iob, reply_cb, reply_param);
2940         if (rc == -ETIME) {
2941                 qeth_clear_ipacmd_list(card);
2942                 qeth_schedule_recovery(card);
2943         }
2944         return rc;
2945 }
2946 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2947
2948 int qeth_send_startlan(struct qeth_card *card)
2949 {
2950         int rc;
2951         struct qeth_cmd_buffer *iob;
2952
2953         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2954
2955         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2956         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2957         return rc;
2958 }
2959 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2960
2961 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2962                 struct qeth_reply *reply, unsigned long data)
2963 {
2964         struct qeth_ipa_cmd *cmd;
2965
2966         QETH_CARD_TEXT(card, 4, "defadpcb");
2967
2968         cmd = (struct qeth_ipa_cmd *) data;
2969         if (cmd->hdr.return_code == 0)
2970                 cmd->hdr.return_code =
2971                         cmd->data.setadapterparms.hdr.return_code;
2972         return 0;
2973 }
2974
2975 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2976                 struct qeth_reply *reply, unsigned long data)
2977 {
2978         struct qeth_ipa_cmd *cmd;
2979
2980         QETH_CARD_TEXT(card, 3, "quyadpcb");
2981
2982         cmd = (struct qeth_ipa_cmd *) data;
2983         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2984                 card->info.link_type =
2985                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2986                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2987         }
2988         card->options.adp.supported_funcs =
2989                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2990         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2991 }
2992
2993 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2994                 __u32 command, __u32 cmdlen)
2995 {
2996         struct qeth_cmd_buffer *iob;
2997         struct qeth_ipa_cmd *cmd;
2998
2999         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3000                                      QETH_PROT_IPV4);
3001         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3002         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3003         cmd->data.setadapterparms.hdr.command_code = command;
3004         cmd->data.setadapterparms.hdr.used_total = 1;
3005         cmd->data.setadapterparms.hdr.seq_no = 1;
3006
3007         return iob;
3008 }
3009
3010 int qeth_query_setadapterparms(struct qeth_card *card)
3011 {
3012         int rc;
3013         struct qeth_cmd_buffer *iob;
3014
3015         QETH_CARD_TEXT(card, 3, "queryadp");
3016         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3017                                    sizeof(struct qeth_ipacmd_setadpparms));
3018         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3019         return rc;
3020 }
3021 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3022
3023 static int qeth_query_ipassists_cb(struct qeth_card *card,
3024                 struct qeth_reply *reply, unsigned long data)
3025 {
3026         struct qeth_ipa_cmd *cmd;
3027
3028         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3029
3030         cmd = (struct qeth_ipa_cmd *) data;
3031
3032         switch (cmd->hdr.return_code) {
3033         case IPA_RC_NOTSUPP:
3034         case IPA_RC_L2_UNSUPPORTED_CMD:
3035                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3036                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3037                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3038                 return -0;
3039         default:
3040                 if (cmd->hdr.return_code) {
3041                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3042                                                 "rc=%d\n",
3043                                                 dev_name(&card->gdev->dev),
3044                                                 cmd->hdr.return_code);
3045                         return 0;
3046                 }
3047         }
3048
3049         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3050                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3051                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3052         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3053                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3054                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3055         } else
3056                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3057                                         "\n", dev_name(&card->gdev->dev));
3058         return 0;
3059 }
3060
3061 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3062 {
3063         int rc;
3064         struct qeth_cmd_buffer *iob;
3065
3066         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3067         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3068         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3069         return rc;
3070 }
3071 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3072
3073 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3074                                 struct qeth_reply *reply, unsigned long data)
3075 {
3076         struct qeth_ipa_cmd *cmd;
3077         struct qeth_switch_info *sw_info;
3078         struct qeth_query_switch_attributes *attrs;
3079
3080         QETH_CARD_TEXT(card, 2, "qswiatcb");
3081         cmd = (struct qeth_ipa_cmd *) data;
3082         sw_info = (struct qeth_switch_info *)reply->param;
3083         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3084                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3085                 sw_info->capabilities = attrs->capabilities;
3086                 sw_info->settings = attrs->settings;
3087                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3088                                                         sw_info->settings);
3089         }
3090         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3091
3092         return 0;
3093 }
3094
3095 int qeth_query_switch_attributes(struct qeth_card *card,
3096                                  struct qeth_switch_info *sw_info)
3097 {
3098         struct qeth_cmd_buffer *iob;
3099
3100         QETH_CARD_TEXT(card, 2, "qswiattr");
3101         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3102                 return -EOPNOTSUPP;
3103         if (!netif_carrier_ok(card->dev))
3104                 return -ENOMEDIUM;
3105         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3106                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3107         return qeth_send_ipa_cmd(card, iob,
3108                                 qeth_query_switch_attributes_cb, sw_info);
3109 }
3110 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3111
3112 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3113                 struct qeth_reply *reply, unsigned long data)
3114 {
3115         struct qeth_ipa_cmd *cmd;
3116         __u16 rc;
3117
3118         cmd = (struct qeth_ipa_cmd *)data;
3119         rc = cmd->hdr.return_code;
3120         if (rc)
3121                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3122         else
3123                 card->info.diagass_support = cmd->data.diagass.ext;
3124         return 0;
3125 }
3126
3127 static int qeth_query_setdiagass(struct qeth_card *card)
3128 {
3129         struct qeth_cmd_buffer *iob;
3130         struct qeth_ipa_cmd    *cmd;
3131
3132         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3133         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3134         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3135         cmd->data.diagass.subcmd_len = 16;
3136         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3137         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3138 }
3139
3140 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3141 {
3142         unsigned long info = get_zeroed_page(GFP_KERNEL);
3143         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3144         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3145         struct ccw_dev_id ccwid;
3146         int level;
3147
3148         tid->chpid = card->info.chpid;
3149         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3150         tid->ssid = ccwid.ssid;
3151         tid->devno = ccwid.devno;
3152         if (!info)
3153                 return;
3154         level = stsi(NULL, 0, 0, 0);
3155         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3156                 tid->lparnr = info222->lpar_number;
3157         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3158                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3159                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3160         }
3161         free_page(info);
3162         return;
3163 }
3164
3165 static int qeth_hw_trap_cb(struct qeth_card *card,
3166                 struct qeth_reply *reply, unsigned long data)
3167 {
3168         struct qeth_ipa_cmd *cmd;
3169         __u16 rc;
3170
3171         cmd = (struct qeth_ipa_cmd *)data;
3172         rc = cmd->hdr.return_code;
3173         if (rc)
3174                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3175         return 0;
3176 }
3177
3178 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3179 {
3180         struct qeth_cmd_buffer *iob;
3181         struct qeth_ipa_cmd *cmd;
3182
3183         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3184         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3185         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3186         cmd->data.diagass.subcmd_len = 80;
3187         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3188         cmd->data.diagass.type = 1;
3189         cmd->data.diagass.action = action;
3190         switch (action) {
3191         case QETH_DIAGS_TRAP_ARM:
3192                 cmd->data.diagass.options = 0x0003;
3193                 cmd->data.diagass.ext = 0x00010000 +
3194                         sizeof(struct qeth_trap_id);
3195                 qeth_get_trap_id(card,
3196                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3197                 break;
3198         case QETH_DIAGS_TRAP_DISARM:
3199                 cmd->data.diagass.options = 0x0001;
3200                 break;
3201         case QETH_DIAGS_TRAP_CAPTURE:
3202                 break;
3203         }
3204         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3205 }
3206 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3207
3208 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3209                 unsigned int qdio_error, const char *dbftext)
3210 {
3211         if (qdio_error) {
3212                 QETH_CARD_TEXT(card, 2, dbftext);
3213                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3214                                buf->element[15].sflags);
3215                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3216                                buf->element[14].sflags);
3217                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3218                 if ((buf->element[15].sflags) == 0x12) {
3219                         card->stats.rx_dropped++;
3220                         return 0;
3221                 } else
3222                         return 1;
3223         }
3224         return 0;
3225 }
3226 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3227
3228 void qeth_buffer_reclaim_work(struct work_struct *work)
3229 {
3230         struct qeth_card *card = container_of(work, struct qeth_card,
3231                 buffer_reclaim_work.work);
3232
3233         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3234         qeth_queue_input_buffer(card, card->reclaim_index);
3235 }
3236
3237 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3238 {
3239         struct qeth_qdio_q *queue = card->qdio.in_q;
3240         struct list_head *lh;
3241         int count;
3242         int i;
3243         int rc;
3244         int newcount = 0;
3245
3246         count = (index < queue->next_buf_to_init)?
3247                 card->qdio.in_buf_pool.buf_count -
3248                 (queue->next_buf_to_init - index) :
3249                 card->qdio.in_buf_pool.buf_count -
3250                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3251         /* only requeue at a certain threshold to avoid SIGAs */
3252         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3253                 for (i = queue->next_buf_to_init;
3254                      i < queue->next_buf_to_init + count; ++i) {
3255                         if (qeth_init_input_buffer(card,
3256                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3257                                 break;
3258                         } else {
3259                                 newcount++;
3260                         }
3261                 }
3262
3263                 if (newcount < count) {
3264                         /* we are in memory shortage so we switch back to
3265                            traditional skb allocation and drop packages */
3266                         atomic_set(&card->force_alloc_skb, 3);
3267                         count = newcount;
3268                 } else {
3269                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3270                 }
3271
3272                 if (!count) {
3273                         i = 0;
3274                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3275                                 i++;
3276                         if (i == card->qdio.in_buf_pool.buf_count) {
3277                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3278                                 card->reclaim_index = index;
3279                                 schedule_delayed_work(
3280                                         &card->buffer_reclaim_work,
3281                                         QETH_RECLAIM_WORK_TIME);
3282                         }
3283                         return;
3284                 }
3285
3286                 /*
3287                  * according to old code it should be avoided to requeue all
3288                  * 128 buffers in order to benefit from PCI avoidance.
3289                  * this function keeps at least one buffer (the buffer at
3290                  * 'index') un-requeued -> this buffer is the first buffer that
3291                  * will be requeued the next time
3292                  */
3293                 if (card->options.performance_stats) {
3294                         card->perf_stats.inbound_do_qdio_cnt++;
3295                         card->perf_stats.inbound_do_qdio_start_time =
3296                                 qeth_get_micros();
3297                 }
3298                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3299                              queue->next_buf_to_init, count);
3300                 if (card->options.performance_stats)
3301                         card->perf_stats.inbound_do_qdio_time +=
3302                                 qeth_get_micros() -
3303                                 card->perf_stats.inbound_do_qdio_start_time;
3304                 if (rc) {
3305                         QETH_CARD_TEXT(card, 2, "qinberr");
3306                 }
3307                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3308                                           QDIO_MAX_BUFFERS_PER_Q;
3309         }
3310 }
3311 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3312
3313 static int qeth_handle_send_error(struct qeth_card *card,
3314                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3315 {
3316         int sbalf15 = buffer->buffer->element[15].sflags;
3317
3318         QETH_CARD_TEXT(card, 6, "hdsnderr");
3319         if (card->info.type == QETH_CARD_TYPE_IQD) {
3320                 if (sbalf15 == 0) {
3321                         qdio_err = 0;
3322                 } else {
3323                         qdio_err = 1;
3324                 }
3325         }
3326         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3327
3328         if (!qdio_err)
3329                 return QETH_SEND_ERROR_NONE;
3330
3331         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3332                 return QETH_SEND_ERROR_RETRY;
3333
3334         QETH_CARD_TEXT(card, 1, "lnkfail");
3335         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3336                        (u16)qdio_err, (u8)sbalf15);
3337         return QETH_SEND_ERROR_LINK_FAILURE;
3338 }
3339
3340 /*
3341  * Switched to packing state if the number of used buffers on a queue
3342  * reaches a certain limit.
3343  */
3344 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3345 {
3346         if (!queue->do_pack) {
3347                 if (atomic_read(&queue->used_buffers)
3348                     >= QETH_HIGH_WATERMARK_PACK){
3349                         /* switch non-PACKING -> PACKING */
3350                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3351                         if (queue->card->options.performance_stats)
3352                                 queue->card->perf_stats.sc_dp_p++;
3353                         queue->do_pack = 1;
3354                 }
3355         }
3356 }
3357
3358 /*
3359  * Switches from packing to non-packing mode. If there is a packing
3360  * buffer on the queue this buffer will be prepared to be flushed.
3361  * In that case 1 is returned to inform the caller. If no buffer
3362  * has to be flushed, zero is returned.
3363  */
3364 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3365 {
3366         struct qeth_qdio_out_buffer *buffer;
3367         int flush_count = 0;
3368
3369         if (queue->do_pack) {
3370                 if (atomic_read(&queue->used_buffers)
3371                     <= QETH_LOW_WATERMARK_PACK) {
3372                         /* switch PACKING -> non-PACKING */
3373                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3374                         if (queue->card->options.performance_stats)
3375                                 queue->card->perf_stats.sc_p_dp++;
3376                         queue->do_pack = 0;
3377                         /* flush packing buffers */
3378                         buffer = queue->bufs[queue->next_buf_to_fill];
3379                         if ((atomic_read(&buffer->state) ==
3380                                                 QETH_QDIO_BUF_EMPTY) &&
3381                             (buffer->next_element_to_fill > 0)) {
3382                                 atomic_set(&buffer->state,
3383                                            QETH_QDIO_BUF_PRIMED);
3384                                 flush_count++;
3385                                 queue->next_buf_to_fill =
3386                                         (queue->next_buf_to_fill + 1) %
3387                                         QDIO_MAX_BUFFERS_PER_Q;
3388                         }
3389                 }
3390         }
3391         return flush_count;
3392 }
3393
3394
3395 /*
3396  * Called to flush a packing buffer if no more pci flags are on the queue.
3397  * Checks if there is a packing buffer and prepares it to be flushed.
3398  * In that case returns 1, otherwise zero.
3399  */
3400 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3401 {
3402         struct qeth_qdio_out_buffer *buffer;
3403
3404         buffer = queue->bufs[queue->next_buf_to_fill];
3405         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3406            (buffer->next_element_to_fill > 0)) {
3407                 /* it's a packing buffer */
3408                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3409                 queue->next_buf_to_fill =
3410                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3411                 return 1;
3412         }
3413         return 0;
3414 }
3415
3416 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3417                                int count)
3418 {
3419         struct qeth_qdio_out_buffer *buf;
3420         int rc;
3421         int i;
3422         unsigned int qdio_flags;
3423
3424         for (i = index; i < index + count; ++i) {
3425                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3426                 buf = queue->bufs[bidx];
3427                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3428                                 SBAL_EFLAGS_LAST_ENTRY;
3429
3430                 if (queue->bufstates)
3431                         queue->bufstates[bidx].user = buf;
3432
3433                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3434                         continue;
3435
3436                 if (!queue->do_pack) {
3437                         if ((atomic_read(&queue->used_buffers) >=
3438                                 (QETH_HIGH_WATERMARK_PACK -
3439                                  QETH_WATERMARK_PACK_FUZZ)) &&
3440                             !atomic_read(&queue->set_pci_flags_count)) {
3441                                 /* it's likely that we'll go to packing
3442                                  * mode soon */
3443                                 atomic_inc(&queue->set_pci_flags_count);
3444                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3445                         }
3446                 } else {
3447                         if (!atomic_read(&queue->set_pci_flags_count)) {
3448                                 /*
3449                                  * there's no outstanding PCI any more, so we
3450                                  * have to request a PCI to be sure the the PCI
3451                                  * will wake at some time in the future then we
3452                                  * can flush packed buffers that might still be
3453                                  * hanging around, which can happen if no
3454                                  * further send was requested by the stack
3455                                  */
3456                                 atomic_inc(&queue->set_pci_flags_count);
3457                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3458                         }
3459                 }
3460         }
3461
3462         queue->card->dev->trans_start = jiffies;
3463         if (queue->card->options.performance_stats) {
3464                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3465                 queue->card->perf_stats.outbound_do_qdio_start_time =
3466                         qeth_get_micros();
3467         }
3468         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3469         if (atomic_read(&queue->set_pci_flags_count))
3470                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3471         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3472                      queue->queue_no, index, count);
3473         if (queue->card->options.performance_stats)
3474                 queue->card->perf_stats.outbound_do_qdio_time +=
3475                         qeth_get_micros() -
3476                         queue->card->perf_stats.outbound_do_qdio_start_time;
3477         atomic_add(count, &queue->used_buffers);
3478         if (rc) {
3479                 queue->card->stats.tx_errors += count;
3480                 /* ignore temporary SIGA errors without busy condition */
3481                 if (rc == -ENOBUFS)
3482                         return;
3483                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3484                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3485                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3486                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3487                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3488
3489                 /* this must not happen under normal circumstances. if it
3490                  * happens something is really wrong -> recover */
3491                 qeth_schedule_recovery(queue->card);
3492                 return;
3493         }
3494         if (queue->card->options.performance_stats)
3495                 queue->card->perf_stats.bufs_sent += count;
3496 }
3497
3498 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3499 {
3500         int index;
3501         int flush_cnt = 0;
3502         int q_was_packing = 0;
3503
3504         /*
3505          * check if weed have to switch to non-packing mode or if
3506          * we have to get a pci flag out on the queue
3507          */
3508         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3509             !atomic_read(&queue->set_pci_flags_count)) {
3510                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3511                                 QETH_OUT_Q_UNLOCKED) {
3512                         /*
3513                          * If we get in here, there was no action in
3514                          * do_send_packet. So, we check if there is a
3515                          * packing buffer to be flushed here.
3516                          */
3517                         netif_stop_queue(queue->card->dev);
3518                         index = queue->next_buf_to_fill;
3519                         q_was_packing = queue->do_pack;
3520                         /* queue->do_pack may change */
3521                         barrier();
3522                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3523                         if (!flush_cnt &&
3524                             !atomic_read(&queue->set_pci_flags_count))
3525                                 flush_cnt +=
3526                                         qeth_flush_buffers_on_no_pci(queue);
3527                         if (queue->card->options.performance_stats &&
3528                             q_was_packing)
3529                                 queue->card->perf_stats.bufs_sent_pack +=
3530                                         flush_cnt;
3531                         if (flush_cnt)
3532                                 qeth_flush_buffers(queue, index, flush_cnt);
3533                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3534                 }
3535         }
3536 }
3537
3538 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3539                 unsigned long card_ptr)
3540 {
3541         struct qeth_card *card = (struct qeth_card *)card_ptr;
3542
3543         if (card->dev && (card->dev->flags & IFF_UP))
3544                 napi_schedule(&card->napi);
3545 }
3546 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3547
3548 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3549 {
3550         int rc;
3551
3552         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3553                 rc = -1;
3554                 goto out;
3555         } else {
3556                 if (card->options.cq == cq) {
3557                         rc = 0;
3558                         goto out;
3559                 }
3560
3561                 if (card->state != CARD_STATE_DOWN &&
3562                     card->state != CARD_STATE_RECOVER) {
3563                         rc = -1;
3564                         goto out;
3565                 }
3566
3567                 qeth_free_qdio_buffers(card);
3568                 card->options.cq = cq;
3569                 rc = 0;
3570         }
3571 out:
3572         return rc;
3573
3574 }
3575 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3576
3577
3578 static void qeth_qdio_cq_handler(struct qeth_card *card,
3579                 unsigned int qdio_err,
3580                 unsigned int queue, int first_element, int count) {
3581         struct qeth_qdio_q *cq = card->qdio.c_q;
3582         int i;
3583         int rc;
3584
3585         if (!qeth_is_cq(card, queue))
3586                 goto out;
3587
3588         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3589         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3590         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3591
3592         if (qdio_err) {
3593                 netif_stop_queue(card->dev);
3594                 qeth_schedule_recovery(card);
3595                 goto out;
3596         }
3597
3598         if (card->options.performance_stats) {
3599                 card->perf_stats.cq_cnt++;
3600                 card->perf_stats.cq_start_time = qeth_get_micros();
3601         }
3602
3603         for (i = first_element; i < first_element + count; ++i) {
3604                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3605                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3606                 int e;
3607
3608                 e = 0;
3609                 while (buffer->element[e].addr) {
3610                         unsigned long phys_aob_addr;
3611
3612                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3613                         qeth_qdio_handle_aob(card, phys_aob_addr);
3614                         buffer->element[e].addr = NULL;
3615                         buffer->element[e].eflags = 0;
3616                         buffer->element[e].sflags = 0;
3617                         buffer->element[e].length = 0;
3618
3619                         ++e;
3620                 }
3621
3622                 buffer->element[15].eflags = 0;
3623                 buffer->element[15].sflags = 0;
3624         }
3625         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3626                     card->qdio.c_q->next_buf_to_init,
3627                     count);
3628         if (rc) {
3629                 dev_warn(&card->gdev->dev,
3630                         "QDIO reported an error, rc=%i\n", rc);
3631                 QETH_CARD_TEXT(card, 2, "qcqherr");
3632         }
3633         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3634                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3635
3636         netif_wake_queue(card->dev);
3637
3638         if (card->options.performance_stats) {
3639                 int delta_t = qeth_get_micros();
3640                 delta_t -= card->perf_stats.cq_start_time;
3641                 card->perf_stats.cq_time += delta_t;
3642         }
3643 out:
3644         return;
3645 }
3646
3647 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3648                 unsigned int queue, int first_elem, int count,
3649                 unsigned long card_ptr)
3650 {
3651         struct qeth_card *card = (struct qeth_card *)card_ptr;
3652
3653         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3654         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3655
3656         if (qeth_is_cq(card, queue))
3657                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3658         else if (qdio_err)
3659                 qeth_schedule_recovery(card);
3660
3661
3662 }
3663 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3664
3665 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3666                 unsigned int qdio_error, int __queue, int first_element,
3667                 int count, unsigned long card_ptr)
3668 {
3669         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3670         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3671         struct qeth_qdio_out_buffer *buffer;
3672         int i;
3673
3674         QETH_CARD_TEXT(card, 6, "qdouhdl");
3675         if (qdio_error & QDIO_ERROR_FATAL) {
3676                 QETH_CARD_TEXT(card, 2, "achkcond");
3677                 netif_stop_queue(card->dev);
3678                 qeth_schedule_recovery(card);
3679                 return;
3680         }
3681         if (card->options.performance_stats) {
3682                 card->perf_stats.outbound_handler_cnt++;
3683                 card->perf_stats.outbound_handler_start_time =
3684                         qeth_get_micros();
3685         }
3686         for (i = first_element; i < (first_element + count); ++i) {
3687                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3688                 buffer = queue->bufs[bidx];
3689                 qeth_handle_send_error(card, buffer, qdio_error);
3690
3691                 if (queue->bufstates &&
3692                     (queue->bufstates[bidx].flags &
3693                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3694                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3695
3696                         if (atomic_cmpxchg(&buffer->state,
3697                                            QETH_QDIO_BUF_PRIMED,
3698                                            QETH_QDIO_BUF_PENDING) ==
3699                                 QETH_QDIO_BUF_PRIMED) {
3700                                 qeth_notify_skbs(queue, buffer,
3701                                                  TX_NOTIFY_PENDING);
3702                         }
3703                         buffer->aob = queue->bufstates[bidx].aob;
3704                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3705                         QETH_CARD_TEXT(queue->card, 5, "aob");
3706                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3707                                         virt_to_phys(buffer->aob));
3708                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3709                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3710                                 qeth_schedule_recovery(card);
3711                         }
3712                 } else {
3713                         if (card->options.cq == QETH_CQ_ENABLED) {
3714                                 enum iucv_tx_notify n;
3715
3716                                 n = qeth_compute_cq_notification(
3717                                         buffer->buffer->element[15].sflags, 0);
3718                                 qeth_notify_skbs(queue, buffer, n);
3719                         }
3720
3721                         qeth_clear_output_buffer(queue, buffer,
3722                                                 QETH_QDIO_BUF_EMPTY);
3723                 }
3724                 qeth_cleanup_handled_pending(queue, bidx, 0);
3725         }
3726         atomic_sub(count, &queue->used_buffers);
3727         /* check if we need to do something on this outbound queue */
3728         if (card->info.type != QETH_CARD_TYPE_IQD)
3729                 qeth_check_outbound_queue(queue);
3730
3731         netif_wake_queue(queue->card->dev);
3732         if (card->options.performance_stats)
3733                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3734                         card->perf_stats.outbound_handler_start_time;
3735 }
3736 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3737
3738 /**
3739  * Note: Function assumes that we have 4 outbound queues.
3740  */
3741 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3742                         int ipv, int cast_type)
3743 {
3744         __be16 *tci;
3745         u8 tos;
3746
3747         if (cast_type && card->info.is_multicast_different)
3748                 return card->info.is_multicast_different &
3749                         (card->qdio.no_out_queues - 1);
3750
3751         switch (card->qdio.do_prio_queueing) {
3752         case QETH_PRIO_Q_ING_TOS:
3753         case QETH_PRIO_Q_ING_PREC:
3754                 switch (ipv) {
3755                 case 4:
3756                         tos = ipv4_get_dsfield(ip_hdr(skb));
3757                         break;
3758                 case 6:
3759                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3760                         break;
3761                 default:
3762                         return card->qdio.default_out_queue;
3763                 }
3764                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3765                         return ~tos >> 6 & 3;
3766                 if (tos & IPTOS_MINCOST)
3767                         return 3;
3768                 if (tos & IPTOS_RELIABILITY)
3769                         return 2;
3770                 if (tos & IPTOS_THROUGHPUT)
3771                         return 1;
3772                 if (tos & IPTOS_LOWDELAY)
3773                         return 0;
3774                 break;
3775         case QETH_PRIO_Q_ING_SKB:
3776                 if (skb->priority > 5)
3777                         return 0;
3778                 return ~skb->priority >> 1 & 3;
3779         case QETH_PRIO_Q_ING_VLAN:
3780                 tci = &((struct ethhdr *)skb->data)->h_proto;
3781                 if (*tci == ETH_P_8021Q)
3782                         return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3783                 break;
3784         default:
3785                 break;
3786         }
3787         return card->qdio.default_out_queue;
3788 }
3789 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3790
3791 int qeth_get_elements_for_frags(struct sk_buff *skb)
3792 {
3793         int cnt, length, e, elements = 0;
3794         struct skb_frag_struct *frag;
3795         char *data;
3796
3797         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3798                 frag = &skb_shinfo(skb)->frags[cnt];
3799                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3800                         frag->page_offset;
3801                 length = frag->size;
3802                 e = PFN_UP((unsigned long)data + length - 1) -
3803                         PFN_DOWN((unsigned long)data);
3804                 elements += e;
3805         }
3806         return elements;
3807 }
3808 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3809
3810 int qeth_get_elements_no(struct qeth_card *card,
3811                      struct sk_buff *skb, int elems)
3812 {
3813         int dlen = skb->len - skb->data_len;
3814         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3815                 PFN_DOWN((unsigned long)skb->data);
3816
3817         elements_needed += qeth_get_elements_for_frags(skb);
3818
3819         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3820                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3821                         "(Number=%d / Length=%d). Discarded.\n",
3822                         (elements_needed+elems), skb->len);
3823                 return 0;
3824         }
3825         return elements_needed;
3826 }
3827 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3828
3829 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3830 {
3831         int hroom, inpage, rest;
3832
3833         if (((unsigned long)skb->data & PAGE_MASK) !=
3834             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3835                 hroom = skb_headroom(skb);
3836                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3837                 rest = len - inpage;
3838                 if (rest > hroom)
3839                         return 1;
3840                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3841                 skb->data -= rest;
3842                 skb->tail -= rest;
3843                 *hdr = (struct qeth_hdr *)skb->data;
3844                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3845         }
3846         return 0;
3847 }
3848 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3849
3850 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3851         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3852         int offset)
3853 {
3854         int length = skb->len - skb->data_len;
3855         int length_here;
3856         int element;
3857         char *data;
3858         int first_lap, cnt;
3859         struct skb_frag_struct *frag;
3860
3861         element = *next_element_to_fill;
3862         data = skb->data;
3863         first_lap = (is_tso == 0 ? 1 : 0);
3864
3865         if (offset >= 0) {
3866                 data = skb->data + offset;
3867                 length -= offset;
3868                 first_lap = 0;
3869         }
3870
3871         while (length > 0) {
3872                 /* length_here is the remaining amount of data in this page */
3873                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3874                 if (length < length_here)
3875                         length_here = length;
3876
3877                 buffer->element[element].addr = data;
3878                 buffer->element[element].length = length_here;
3879                 length -= length_here;
3880                 if (!length) {
3881                         if (first_lap)
3882                                 if (skb_shinfo(skb)->nr_frags)
3883                                         buffer->element[element].eflags =
3884                                                 SBAL_EFLAGS_FIRST_FRAG;
3885                                 else
3886                                         buffer->element[element].eflags = 0;
3887                         else
3888                                 buffer->element[element].eflags =
3889                                     SBAL_EFLAGS_MIDDLE_FRAG;
3890                 } else {
3891                         if (first_lap)
3892                                 buffer->element[element].eflags =
3893                                     SBAL_EFLAGS_FIRST_FRAG;
3894                         else
3895                                 buffer->element[element].eflags =
3896                                     SBAL_EFLAGS_MIDDLE_FRAG;
3897                 }
3898                 data += length_here;
3899                 element++;
3900                 first_lap = 0;
3901         }
3902
3903         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3904                 frag = &skb_shinfo(skb)->frags[cnt];
3905                 data = (char *)page_to_phys(skb_frag_page(frag)) +
3906                         frag->page_offset;
3907                 length = frag->size;
3908                 while (length > 0) {
3909                         length_here = PAGE_SIZE -
3910                                 ((unsigned long) data % PAGE_SIZE);
3911                         if (length < length_here)
3912                                 length_here = length;
3913
3914                         buffer->element[element].addr = data;
3915                         buffer->element[element].length = length_here;
3916                         buffer->element[element].eflags =
3917                                 SBAL_EFLAGS_MIDDLE_FRAG;
3918                         length -= length_here;
3919                         data += length_here;
3920                         element++;
3921                 }
3922         }
3923
3924         if (buffer->element[element - 1].eflags)
3925                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3926         *next_element_to_fill = element;
3927 }
3928
3929 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3930                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3931                 struct qeth_hdr *hdr, int offset, int hd_len)
3932 {
3933         struct qdio_buffer *buffer;
3934         int flush_cnt = 0, hdr_len, large_send = 0;
3935
3936         buffer = buf->buffer;
3937         atomic_inc(&skb->users);
3938         skb_queue_tail(&buf->skb_list, skb);
3939
3940         /*check first on TSO ....*/
3941         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3942                 int element = buf->next_element_to_fill;
3943
3944                 hdr_len = sizeof(struct qeth_hdr_tso) +
3945                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3946                 /*fill first buffer entry only with header information */
3947                 buffer->element[element].addr = skb->data;
3948                 buffer->element[element].length = hdr_len;
3949                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3950                 buf->next_element_to_fill++;
3951                 skb->data += hdr_len;
3952                 skb->len  -= hdr_len;
3953                 large_send = 1;
3954         }
3955
3956         if (offset >= 0) {
3957                 int element = buf->next_element_to_fill;
3958                 buffer->element[element].addr = hdr;
3959                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3960                                                         hd_len;
3961                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3962                 buf->is_header[element] = 1;
3963                 buf->next_element_to_fill++;
3964         }
3965
3966         __qeth_fill_buffer(skb, buffer, large_send,
3967                 (int *)&buf->next_element_to_fill, offset);
3968
3969         if (!queue->do_pack) {
3970                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3971                 /* set state to PRIMED -> will be flushed */
3972                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3973                 flush_cnt = 1;
3974         } else {
3975                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3976                 if (queue->card->options.performance_stats)
3977                         queue->card->perf_stats.skbs_sent_pack++;
3978                 if (buf->next_element_to_fill >=
3979                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3980                         /*
3981                          * packed buffer if full -> set state PRIMED
3982                          * -> will be flushed
3983                          */
3984                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3985                         flush_cnt = 1;
3986                 }
3987         }
3988         return flush_cnt;
3989 }
3990
3991 int qeth_do_send_packet_fast(struct qeth_card *card,
3992                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3993                 struct qeth_hdr *hdr, int elements_needed,
3994                 int offset, int hd_len)
3995 {
3996         struct qeth_qdio_out_buffer *buffer;
3997         int index;
3998
3999         /* spin until we get the queue ... */
4000         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4001                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4002         /* ... now we've got the queue */
4003         index = queue->next_buf_to_fill;
4004         buffer = queue->bufs[queue->next_buf_to_fill];
4005         /*
4006          * check if buffer is empty to make sure that we do not 'overtake'
4007          * ourselves and try to fill a buffer that is already primed
4008          */
4009         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4010                 goto out;
4011         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4012                                           QDIO_MAX_BUFFERS_PER_Q;
4013         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4014         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4015         qeth_flush_buffers(queue, index, 1);
4016         return 0;
4017 out:
4018         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4019         return -EBUSY;
4020 }
4021 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4022
4023 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4024                 struct sk_buff *skb, struct qeth_hdr *hdr,
4025                 int elements_needed)
4026 {
4027         struct qeth_qdio_out_buffer *buffer;
4028         int start_index;
4029         int flush_count = 0;
4030         int do_pack = 0;
4031         int tmp;
4032         int rc = 0;
4033
4034         /* spin until we get the queue ... */
4035         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4036                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4037         start_index = queue->next_buf_to_fill;
4038         buffer = queue->bufs[queue->next_buf_to_fill];
4039         /*
4040          * check if buffer is empty to make sure that we do not 'overtake'
4041          * ourselves and try to fill a buffer that is already primed
4042          */
4043         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4044                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4045                 return -EBUSY;
4046         }
4047         /* check if we need to switch packing state of this queue */
4048         qeth_switch_to_packing_if_needed(queue);
4049         if (queue->do_pack) {
4050                 do_pack = 1;
4051                 /* does packet fit in current buffer? */
4052                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4053                     buffer->next_element_to_fill) < elements_needed) {
4054                         /* ... no -> set state PRIMED */
4055                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4056                         flush_count++;
4057                         queue->next_buf_to_fill =
4058                                 (queue->next_buf_to_fill + 1) %
4059                                 QDIO_MAX_BUFFERS_PER_Q;
4060                         buffer = queue->bufs[queue->next_buf_to_fill];
4061                         /* we did a step forward, so check buffer state
4062                          * again */
4063                         if (atomic_read(&buffer->state) !=
4064                             QETH_QDIO_BUF_EMPTY) {
4065                                 qeth_flush_buffers(queue, start_index,
4066                                                            flush_count);
4067                                 atomic_set(&queue->state,
4068                                                 QETH_OUT_Q_UNLOCKED);
4069                                 return -EBUSY;
4070                         }
4071                 }
4072         }
4073         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4074         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4075                                   QDIO_MAX_BUFFERS_PER_Q;
4076         flush_count += tmp;
4077         if (flush_count)
4078                 qeth_flush_buffers(queue, start_index, flush_count);
4079         else if (!atomic_read(&queue->set_pci_flags_count))
4080                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4081         /*
4082          * queue->state will go from LOCKED -> UNLOCKED or from
4083          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4084          * (switch packing state or flush buffer to get another pci flag out).
4085          * In that case we will enter this loop
4086          */
4087         while (atomic_dec_return(&queue->state)) {
4088                 flush_count = 0;
4089                 start_index = queue->next_buf_to_fill;
4090                 /* check if we can go back to non-packing state */
4091                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4092                 /*
4093                  * check if we need to flush a packing buffer to get a pci
4094                  * flag out on the queue
4095                  */
4096                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4097                         flush_count += qeth_flush_buffers_on_no_pci(queue);
4098                 if (flush_count)
4099                         qeth_flush_buffers(queue, start_index, flush_count);
4100         }
4101         /* at this point the queue is UNLOCKED again */
4102         if (queue->card->options.performance_stats && do_pack)
4103                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4104
4105         return rc;
4106 }
4107 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4108
4109 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4110                 struct qeth_reply *reply, unsigned long data)
4111 {
4112         struct qeth_ipa_cmd *cmd;
4113         struct qeth_ipacmd_setadpparms *setparms;
4114
4115         QETH_CARD_TEXT(card, 4, "prmadpcb");
4116
4117         cmd = (struct qeth_ipa_cmd *) data;
4118         setparms = &(cmd->data.setadapterparms);
4119
4120         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4121         if (cmd->hdr.return_code) {
4122                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4123                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4124         }
4125         card->info.promisc_mode = setparms->data.mode;
4126         return 0;
4127 }
4128
4129 void qeth_setadp_promisc_mode(struct qeth_card *card)
4130 {
4131         enum qeth_ipa_promisc_modes mode;
4132         struct net_device *dev = card->dev;
4133         struct qeth_cmd_buffer *iob;
4134         struct qeth_ipa_cmd *cmd;
4135
4136         QETH_CARD_TEXT(card, 4, "setprom");
4137
4138         if (((dev->flags & IFF_PROMISC) &&
4139              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4140             (!(dev->flags & IFF_PROMISC) &&
4141              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4142                 return;
4143         mode = SET_PROMISC_MODE_OFF;
4144         if (dev->flags & IFF_PROMISC)
4145                 mode = SET_PROMISC_MODE_ON;
4146         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4147
4148         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4149                         sizeof(struct qeth_ipacmd_setadpparms));
4150         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4151         cmd->data.setadapterparms.data.mode = mode;
4152         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4153 }
4154 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4155
4156 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4157 {
4158         struct qeth_card *card;
4159         char dbf_text[15];
4160
4161         card = dev->ml_priv;
4162
4163         QETH_CARD_TEXT(card, 4, "chgmtu");
4164         sprintf(dbf_text, "%8x", new_mtu);
4165         QETH_CARD_TEXT(card, 4, dbf_text);
4166
4167         if (new_mtu < 64)
4168                 return -EINVAL;
4169         if (new_mtu > 65535)
4170                 return -EINVAL;
4171         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4172             (!qeth_mtu_is_valid(card, new_mtu)))
4173                 return -EINVAL;
4174         dev->mtu = new_mtu;
4175         return 0;
4176 }
4177 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4178
4179 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4180 {
4181         struct qeth_card *card;
4182
4183         card = dev->ml_priv;
4184
4185         QETH_CARD_TEXT(card, 5, "getstat");
4186
4187         return &card->stats;
4188 }
4189 EXPORT_SYMBOL_GPL(qeth_get_stats);
4190
4191 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4192                 struct qeth_reply *reply, unsigned long data)
4193 {
4194         struct qeth_ipa_cmd *cmd;
4195
4196         QETH_CARD_TEXT(card, 4, "chgmaccb");
4197
4198         cmd = (struct qeth_ipa_cmd *) data;
4199         if (!card->options.layer2 ||
4200             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4201                 memcpy(card->dev->dev_addr,
4202                        &cmd->data.setadapterparms.data.change_addr.addr,
4203                        OSA_ADDR_LEN);
4204                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4205         }
4206         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4207         return 0;
4208 }
4209
4210 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4211 {
4212         int rc;
4213         struct qeth_cmd_buffer *iob;
4214         struct qeth_ipa_cmd *cmd;
4215
4216         QETH_CARD_TEXT(card, 4, "chgmac");
4217
4218         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4219                                    sizeof(struct qeth_ipacmd_setadpparms));
4220         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4221         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4222         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4223         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4224                card->dev->dev_addr, OSA_ADDR_LEN);
4225         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4226                                NULL);
4227         return rc;
4228 }
4229 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4230
4231 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4232                 struct qeth_reply *reply, unsigned long data)
4233 {
4234         struct qeth_ipa_cmd *cmd;
4235         struct qeth_set_access_ctrl *access_ctrl_req;
4236         int fallback = *(int *)reply->param;
4237
4238         QETH_CARD_TEXT(card, 4, "setaccb");
4239
4240         cmd = (struct qeth_ipa_cmd *) data;
4241         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4242         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4243         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4244         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4245                 cmd->data.setadapterparms.hdr.return_code);
4246         if (cmd->data.setadapterparms.hdr.return_code !=
4247                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4248                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4249                                 card->gdev->dev.kobj.name,
4250                                 access_ctrl_req->subcmd_code,
4251                                 cmd->data.setadapterparms.hdr.return_code);
4252         switch (cmd->data.setadapterparms.hdr.return_code) {
4253         case SET_ACCESS_CTRL_RC_SUCCESS:
4254                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4255                         dev_info(&card->gdev->dev,
4256                             "QDIO data connection isolation is deactivated\n");
4257                 } else {
4258                         dev_info(&card->gdev->dev,
4259                             "QDIO data connection isolation is activated\n");
4260                 }
4261                 break;
4262         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4263                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4264                                 "deactivated\n", dev_name(&card->gdev->dev));
4265                 if (fallback)
4266                         card->options.isolation = card->options.prev_isolation;
4267                 break;
4268         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4269                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4270                                 " activated\n", dev_name(&card->gdev->dev));
4271                 if (fallback)
4272                         card->options.isolation = card->options.prev_isolation;
4273                 break;
4274         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4275                 dev_err(&card->gdev->dev, "Adapter does not "
4276                         "support QDIO data connection isolation\n");
4277                 break;
4278         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4279                 dev_err(&card->gdev->dev,
4280                         "Adapter is dedicated. "
4281                         "QDIO data connection isolation not supported\n");
4282                 if (fallback)
4283                         card->options.isolation = card->options.prev_isolation;
4284                 break;
4285         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4286                 dev_err(&card->gdev->dev,
4287                         "TSO does not permit QDIO data connection isolation\n");
4288                 if (fallback)
4289                         card->options.isolation = card->options.prev_isolation;
4290                 break;
4291         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4292                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4293                         "support reflective relay mode\n");
4294                 if (fallback)
4295                         card->options.isolation = card->options.prev_isolation;
4296                 break;
4297         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4298                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4299                                         "enabled at the adjacent switch port");
4300                 if (fallback)
4301                         card->options.isolation = card->options.prev_isolation;
4302                 break;
4303         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4304                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4305                                         "at the adjacent switch failed\n");
4306                 break;
4307         default:
4308                 /* this should never happen */
4309                 if (fallback)
4310                         card->options.isolation = card->options.prev_isolation;
4311                 break;
4312         }
4313         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4314         return 0;
4315 }
4316
4317 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4318                 enum qeth_ipa_isolation_modes isolation, int fallback)
4319 {
4320         int rc;
4321         struct qeth_cmd_buffer *iob;
4322         struct qeth_ipa_cmd *cmd;
4323         struct qeth_set_access_ctrl *access_ctrl_req;
4324
4325         QETH_CARD_TEXT(card, 4, "setacctl");
4326
4327         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4328         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4329
4330         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4331                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4332                                    sizeof(struct qeth_set_access_ctrl));
4333         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4334         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4335         access_ctrl_req->subcmd_code = isolation;
4336
4337         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4338                                &fallback);
4339         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4340         return rc;
4341 }
4342
4343 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4344 {
4345         int rc = 0;
4346
4347         QETH_CARD_TEXT(card, 4, "setactlo");
4348
4349         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4350              card->info.type == QETH_CARD_TYPE_OSX) &&
4351              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4352                 rc = qeth_setadpparms_set_access_ctrl(card,
4353                         card->options.isolation, fallback);
4354                 if (rc) {
4355                         QETH_DBF_MESSAGE(3,
4356                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4357                                 card->gdev->dev.kobj.name,
4358                                 rc);
4359                         rc = -EOPNOTSUPP;
4360                 }
4361         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4362                 card->options.isolation = ISOLATION_MODE_NONE;
4363
4364                 dev_err(&card->gdev->dev, "Adapter does not "
4365                         "support QDIO data connection isolation\n");
4366                 rc = -EOPNOTSUPP;
4367         }
4368         return rc;
4369 }
4370 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4371
4372 void qeth_tx_timeout(struct net_device *dev)
4373 {
4374         struct qeth_card *card;
4375
4376         card = dev->ml_priv;
4377         QETH_CARD_TEXT(card, 4, "txtimeo");
4378         card->stats.tx_errors++;
4379         qeth_schedule_recovery(card);
4380 }
4381 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4382
4383 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4384 {
4385         struct qeth_card *card = dev->ml_priv;
4386         int rc = 0;
4387
4388         switch (regnum) {
4389         case MII_BMCR: /* Basic mode control register */
4390                 rc = BMCR_FULLDPLX;
4391                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4392                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4393                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4394                         rc |= BMCR_SPEED100;
4395                 break;
4396         case MII_BMSR: /* Basic mode status register */
4397                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4398                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4399                      BMSR_100BASE4;
4400                 break;
4401         case MII_PHYSID1: /* PHYS ID 1 */
4402                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4403                      dev->dev_addr[2];
4404                 rc = (rc >> 5) & 0xFFFF;
4405                 break;
4406         case MII_PHYSID2: /* PHYS ID 2 */
4407                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4408                 break;
4409         case MII_ADVERTISE: /* Advertisement control reg */
4410                 rc = ADVERTISE_ALL;
4411                 break;
4412         case MII_LPA: /* Link partner ability reg */
4413                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4414                      LPA_100BASE4 | LPA_LPACK;
4415                 break;
4416         case MII_EXPANSION: /* Expansion register */
4417                 break;
4418         case MII_DCOUNTER: /* disconnect counter */
4419                 break;
4420         case MII_FCSCOUNTER: /* false carrier counter */
4421                 break;
4422         case MII_NWAYTEST: /* N-way auto-neg test register */
4423                 break;
4424         case MII_RERRCOUNTER: /* rx error counter */
4425                 rc = card->stats.rx_errors;
4426                 break;
4427         case MII_SREVISION: /* silicon revision */
4428                 break;
4429         case MII_RESV1: /* reserved 1 */
4430                 break;
4431         case MII_LBRERROR: /* loopback, rx, bypass error */
4432                 break;
4433         case MII_PHYADDR: /* physical address */
4434                 break;
4435         case MII_RESV2: /* reserved 2 */
4436                 break;
4437         case MII_TPISTATUS: /* TPI status for 10mbps */
4438                 break;
4439         case MII_NCONFIG: /* network interface config */
4440                 break;
4441         default:
4442                 break;
4443         }
4444         return rc;
4445 }
4446 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4447
4448 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4449                 struct qeth_cmd_buffer *iob, int len,
4450                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4451                         unsigned long),
4452                 void *reply_param)
4453 {
4454         u16 s1, s2;
4455
4456         QETH_CARD_TEXT(card, 4, "sendsnmp");
4457
4458         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4459         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4460                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4461         /* adjust PDU length fields in IPA_PDU_HEADER */
4462         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4463         s2 = (u32) len;
4464         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4465         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4466         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4467         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4468         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4469                                       reply_cb, reply_param);
4470 }
4471
4472 static int qeth_snmp_command_cb(struct qeth_card *card,
4473                 struct qeth_reply *reply, unsigned long sdata)
4474 {
4475         struct qeth_ipa_cmd *cmd;
4476         struct qeth_arp_query_info *qinfo;
4477         struct qeth_snmp_cmd *snmp;
4478         unsigned char *data;
4479         __u16 data_len;
4480
4481         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4482
4483         cmd = (struct qeth_ipa_cmd *) sdata;
4484         data = (unsigned char *)((char *)cmd - reply->offset);
4485         qinfo = (struct qeth_arp_query_info *) reply->param;
4486         snmp = &cmd->data.setadapterparms.data.snmp;
4487
4488         if (cmd->hdr.return_code) {
4489                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4490                 return 0;
4491         }
4492         if (cmd->data.setadapterparms.hdr.return_code) {
4493                 cmd->hdr.return_code =
4494                         cmd->data.setadapterparms.hdr.return_code;
4495                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4496                 return 0;
4497         }
4498         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4499         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4500                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4501         else
4502                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4503
4504         /* check if there is enough room in userspace */
4505         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4506                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4507                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4508                 return 0;
4509         }
4510         QETH_CARD_TEXT_(card, 4, "snore%i",
4511                        cmd->data.setadapterparms.hdr.used_total);
4512         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4513                 cmd->data.setadapterparms.hdr.seq_no);
4514         /*copy entries to user buffer*/
4515         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4516                 memcpy(qinfo->udata + qinfo->udata_offset,
4517                        (char *)snmp,
4518                        data_len + offsetof(struct qeth_snmp_cmd, data));
4519                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4520         } else {
4521                 memcpy(qinfo->udata + qinfo->udata_offset,
4522                        (char *)&snmp->request, data_len);
4523         }
4524         qinfo->udata_offset += data_len;
4525         /* check if all replies received ... */
4526                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4527                                cmd->data.setadapterparms.hdr.used_total);
4528                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4529                                cmd->data.setadapterparms.hdr.seq_no);
4530         if (cmd->data.setadapterparms.hdr.seq_no <
4531             cmd->data.setadapterparms.hdr.used_total)
4532                 return 1;
4533         return 0;
4534 }
4535
4536 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4537 {
4538         struct qeth_cmd_buffer *iob;
4539         struct qeth_ipa_cmd *cmd;
4540         struct qeth_snmp_ureq *ureq;
4541         unsigned int req_len;
4542         struct qeth_arp_query_info qinfo = {0, };
4543         int rc = 0;
4544
4545         QETH_CARD_TEXT(card, 3, "snmpcmd");
4546
4547         if (card->info.guestlan)
4548                 return -EOPNOTSUPP;
4549
4550         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4551             (!card->options.layer2)) {
4552                 return -EOPNOTSUPP;
4553         }
4554         /* skip 4 bytes (data_len struct member) to get req_len */
4555         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4556                 return -EFAULT;
4557         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4558                        sizeof(struct qeth_ipacmd_hdr) -
4559                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4560                 return -EINVAL;
4561         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4562         if (IS_ERR(ureq)) {
4563                 QETH_CARD_TEXT(card, 2, "snmpnome");
4564                 return PTR_ERR(ureq);
4565         }
4566         qinfo.udata_len = ureq->hdr.data_len;
4567         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4568         if (!qinfo.udata) {
4569                 kfree(ureq);
4570                 return -ENOMEM;
4571         }
4572         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4573
4574         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4575                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4576         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4577         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4578         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4579                                     qeth_snmp_command_cb, (void *)&qinfo);
4580         if (rc)
4581                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4582                            QETH_CARD_IFNAME(card), rc);
4583         else {
4584                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4585                         rc = -EFAULT;
4586         }
4587
4588         kfree(ureq);
4589         kfree(qinfo.udata);
4590         return rc;
4591 }
4592 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4593
4594 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4595                 struct qeth_reply *reply, unsigned long data)
4596 {
4597         struct qeth_ipa_cmd *cmd;
4598         struct qeth_qoat_priv *priv;
4599         char *resdata;
4600         int resdatalen;
4601
4602         QETH_CARD_TEXT(card, 3, "qoatcb");
4603
4604         cmd = (struct qeth_ipa_cmd *)data;
4605         priv = (struct qeth_qoat_priv *)reply->param;
4606         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4607         resdata = (char *)data + 28;
4608
4609         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4610                 cmd->hdr.return_code = IPA_RC_FFFF;
4611                 return 0;
4612         }
4613
4614         memcpy((priv->buffer + priv->response_len), resdata,
4615                 resdatalen);
4616         priv->response_len += resdatalen;
4617
4618         if (cmd->data.setadapterparms.hdr.seq_no <
4619             cmd->data.setadapterparms.hdr.used_total)
4620                 return 1;
4621         return 0;
4622 }
4623
4624 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4625 {
4626         int rc = 0;
4627         struct qeth_cmd_buffer *iob;
4628         struct qeth_ipa_cmd *cmd;
4629         struct qeth_query_oat *oat_req;
4630         struct qeth_query_oat_data oat_data;
4631         struct qeth_qoat_priv priv;
4632         void __user *tmp;
4633
4634         QETH_CARD_TEXT(card, 3, "qoatcmd");
4635
4636         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4637                 rc = -EOPNOTSUPP;
4638                 goto out;
4639         }
4640
4641         if (copy_from_user(&oat_data, udata,
4642             sizeof(struct qeth_query_oat_data))) {
4643                         rc = -EFAULT;
4644                         goto out;
4645         }
4646
4647         priv.buffer_len = oat_data.buffer_len;
4648         priv.response_len = 0;
4649         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4650         if (!priv.buffer) {
4651                 rc = -ENOMEM;
4652                 goto out;
4653         }
4654
4655         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4656                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4657                                    sizeof(struct qeth_query_oat));
4658         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4659         oat_req = &cmd->data.setadapterparms.data.query_oat;
4660         oat_req->subcmd_code = oat_data.command;
4661
4662         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4663                                &priv);
4664         if (!rc) {
4665                 if (is_compat_task())
4666                         tmp = compat_ptr(oat_data.ptr);
4667                 else
4668                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4669
4670                 if (copy_to_user(tmp, priv.buffer,
4671                     priv.response_len)) {
4672                         rc = -EFAULT;
4673                         goto out_free;
4674                 }
4675
4676                 oat_data.response_len = priv.response_len;
4677
4678                 if (copy_to_user(udata, &oat_data,
4679                     sizeof(struct qeth_query_oat_data)))
4680                         rc = -EFAULT;
4681         } else
4682                 if (rc == IPA_RC_FFFF)
4683                         rc = -EFAULT;
4684
4685 out_free:
4686         kfree(priv.buffer);
4687 out:
4688         return rc;
4689 }
4690 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4691
4692 static int qeth_query_card_info_cb(struct qeth_card *card,
4693                                    struct qeth_reply *reply, unsigned long data)
4694 {
4695         struct qeth_ipa_cmd *cmd;
4696         struct qeth_query_card_info *card_info;
4697         struct carrier_info *carrier_info;
4698
4699         QETH_CARD_TEXT(card, 2, "qcrdincb");
4700         carrier_info = (struct carrier_info *)reply->param;
4701         cmd = (struct qeth_ipa_cmd *)data;
4702         card_info = &cmd->data.setadapterparms.data.card_info;
4703         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4704                 carrier_info->card_type = card_info->card_type;
4705                 carrier_info->port_mode = card_info->port_mode;
4706                 carrier_info->port_speed = card_info->port_speed;
4707         }
4708
4709         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4710         return 0;
4711 }
4712
4713 int qeth_query_card_info(struct qeth_card *card,
4714                                 struct carrier_info *carrier_info)
4715 {
4716         struct qeth_cmd_buffer *iob;
4717
4718         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4719         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4720                 return -EOPNOTSUPP;
4721         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4722                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4723         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4724                                         (void *)carrier_info);
4725 }
4726 EXPORT_SYMBOL_GPL(qeth_query_card_info);
4727
4728 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4729 {
4730         switch (card->info.type) {
4731         case QETH_CARD_TYPE_IQD:
4732                 return 2;
4733         default:
4734                 return 0;
4735         }
4736 }
4737
4738 static void qeth_determine_capabilities(struct qeth_card *card)
4739 {
4740         int rc;
4741         int length;
4742         char *prcd;
4743         struct ccw_device *ddev;
4744         int ddev_offline = 0;
4745
4746         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4747         ddev = CARD_DDEV(card);
4748         if (!ddev->online) {
4749                 ddev_offline = 1;
4750                 rc = ccw_device_set_online(ddev);
4751                 if (rc) {
4752                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4753                         goto out;
4754                 }
4755         }
4756
4757         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4758         if (rc) {
4759                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4760                         dev_name(&card->gdev->dev), rc);
4761                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4762                 goto out_offline;
4763         }
4764         qeth_configure_unitaddr(card, prcd);
4765         if (ddev_offline)
4766                 qeth_configure_blkt_default(card, prcd);
4767         kfree(prcd);
4768
4769         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4770         if (rc)
4771                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4772
4773         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4774         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4775         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4776         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4777         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4778             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4779             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4780                 dev_info(&card->gdev->dev,
4781                         "Completion Queueing supported\n");
4782         } else {
4783                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4784         }
4785
4786
4787 out_offline:
4788         if (ddev_offline == 1)
4789                 ccw_device_set_offline(ddev);
4790 out:
4791         return;
4792 }
4793
4794 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4795         struct qdio_buffer **in_sbal_ptrs,
4796         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4797         int i;
4798
4799         if (card->options.cq == QETH_CQ_ENABLED) {
4800                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4801                              (card->qdio.no_in_queues - 1);
4802                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4803                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4804                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4805                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4806                 }
4807
4808                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4809         }
4810 }
4811
4812 static int qeth_qdio_establish(struct qeth_card *card)
4813 {
4814         struct qdio_initialize init_data;
4815         char *qib_param_field;
4816         struct qdio_buffer **in_sbal_ptrs;
4817         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4818         struct qdio_buffer **out_sbal_ptrs;
4819         int i, j, k;
4820         int rc = 0;
4821
4822         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4823
4824         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4825                               GFP_KERNEL);
4826         if (!qib_param_field) {
4827                 rc =  -ENOMEM;
4828                 goto out_free_nothing;
4829         }
4830
4831         qeth_create_qib_param_field(card, qib_param_field);
4832         qeth_create_qib_param_field_blkt(card, qib_param_field);
4833
4834         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4835                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4836                                GFP_KERNEL);
4837         if (!in_sbal_ptrs) {
4838                 rc = -ENOMEM;
4839                 goto out_free_qib_param;
4840         }
4841         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4842                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4843                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4844         }
4845
4846         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4847                                    GFP_KERNEL);
4848         if (!queue_start_poll) {
4849                 rc = -ENOMEM;
4850                 goto out_free_in_sbals;
4851         }
4852         for (i = 0; i < card->qdio.no_in_queues; ++i)
4853                 queue_start_poll[i] = card->discipline->start_poll;
4854
4855         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4856
4857         out_sbal_ptrs =
4858                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4859                         sizeof(void *), GFP_KERNEL);
4860         if (!out_sbal_ptrs) {
4861                 rc = -ENOMEM;
4862                 goto out_free_queue_start_poll;
4863         }
4864         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4865                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4866                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4867                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4868                 }
4869
4870         memset(&init_data, 0, sizeof(struct qdio_initialize));
4871         init_data.cdev                   = CARD_DDEV(card);
4872         init_data.q_format               = qeth_get_qdio_q_format(card);
4873         init_data.qib_param_field_format = 0;
4874         init_data.qib_param_field        = qib_param_field;
4875         init_data.no_input_qs            = card->qdio.no_in_queues;
4876         init_data.no_output_qs           = card->qdio.no_out_queues;
4877         init_data.input_handler          = card->discipline->input_handler;
4878         init_data.output_handler         = card->discipline->output_handler;
4879         init_data.queue_start_poll_array = queue_start_poll;
4880         init_data.int_parm               = (unsigned long) card;
4881         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4882         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4883         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4884         init_data.scan_threshold =
4885                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4886
4887         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4888                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4889                 rc = qdio_allocate(&init_data);
4890                 if (rc) {
4891                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4892                         goto out;
4893                 }
4894                 rc = qdio_establish(&init_data);
4895                 if (rc) {
4896                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4897                         qdio_free(CARD_DDEV(card));
4898                 }
4899         }
4900
4901         switch (card->options.cq) {
4902         case QETH_CQ_ENABLED:
4903                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4904                 break;
4905         case QETH_CQ_DISABLED:
4906                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4907                 break;
4908         default:
4909                 break;
4910         }
4911 out:
4912         kfree(out_sbal_ptrs);
4913 out_free_queue_start_poll:
4914         kfree(queue_start_poll);
4915 out_free_in_sbals:
4916         kfree(in_sbal_ptrs);
4917 out_free_qib_param:
4918         kfree(qib_param_field);
4919 out_free_nothing:
4920         return rc;
4921 }
4922
4923 static void qeth_core_free_card(struct qeth_card *card)
4924 {
4925
4926         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4927         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4928         qeth_clean_channel(&card->read);
4929         qeth_clean_channel(&card->write);
4930         if (card->dev)
4931                 free_netdev(card->dev);
4932         kfree(card->ip_tbd_list);
4933         qeth_free_qdio_buffers(card);
4934         unregister_service_level(&card->qeth_service_level);
4935         kfree(card);
4936 }
4937
4938 void qeth_trace_features(struct qeth_card *card)
4939 {
4940         QETH_CARD_TEXT(card, 2, "features");
4941         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4942         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4943         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4944         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4945         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4946         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4947         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4948 }
4949 EXPORT_SYMBOL_GPL(qeth_trace_features);
4950
4951 static struct ccw_device_id qeth_ids[] = {
4952         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4953                                         .driver_info = QETH_CARD_TYPE_OSD},
4954         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4955                                         .driver_info = QETH_CARD_TYPE_IQD},
4956         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4957                                         .driver_info = QETH_CARD_TYPE_OSN},
4958         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4959                                         .driver_info = QETH_CARD_TYPE_OSM},
4960         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4961                                         .driver_info = QETH_CARD_TYPE_OSX},
4962         {},
4963 };
4964 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4965
4966 static struct ccw_driver qeth_ccw_driver = {
4967         .driver = {
4968                 .owner = THIS_MODULE,
4969                 .name = "qeth",
4970         },
4971         .ids = qeth_ids,
4972         .probe = ccwgroup_probe_ccwdev,
4973         .remove = ccwgroup_remove_ccwdev,
4974 };
4975
4976 int qeth_core_hardsetup_card(struct qeth_card *card)
4977 {
4978         int retries = 3;
4979         int rc;
4980
4981         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4982         atomic_set(&card->force_alloc_skb, 0);
4983         qeth_update_from_chp_desc(card);
4984 retry:
4985         if (retries < 3)
4986                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4987                         dev_name(&card->gdev->dev));
4988         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4989         ccw_device_set_offline(CARD_DDEV(card));
4990         ccw_device_set_offline(CARD_WDEV(card));
4991         ccw_device_set_offline(CARD_RDEV(card));
4992         qdio_free(CARD_DDEV(card));
4993         rc = ccw_device_set_online(CARD_RDEV(card));
4994         if (rc)
4995                 goto retriable;
4996         rc = ccw_device_set_online(CARD_WDEV(card));
4997         if (rc)
4998                 goto retriable;
4999         rc = ccw_device_set_online(CARD_DDEV(card));
5000         if (rc)
5001                 goto retriable;
5002 retriable:
5003         if (rc == -ERESTARTSYS) {
5004                 QETH_DBF_TEXT(SETUP, 2, "break1");
5005                 return rc;
5006         } else if (rc) {
5007                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5008                 if (--retries < 0)
5009                         goto out;
5010                 else
5011                         goto retry;
5012         }
5013         qeth_determine_capabilities(card);
5014         qeth_init_tokens(card);
5015         qeth_init_func_level(card);
5016         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5017         if (rc == -ERESTARTSYS) {
5018                 QETH_DBF_TEXT(SETUP, 2, "break2");
5019                 return rc;
5020         } else if (rc) {
5021                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5022                 if (--retries < 0)
5023                         goto out;
5024                 else
5025                         goto retry;
5026         }
5027         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5028         if (rc == -ERESTARTSYS) {
5029                 QETH_DBF_TEXT(SETUP, 2, "break3");
5030                 return rc;
5031         } else if (rc) {
5032                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5033                 if (--retries < 0)
5034                         goto out;
5035                 else
5036                         goto retry;
5037         }
5038         card->read_or_write_problem = 0;
5039         rc = qeth_mpc_initialize(card);
5040         if (rc) {
5041                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5042                 goto out;
5043         }
5044
5045         card->options.ipa4.supported_funcs = 0;
5046         card->options.adp.supported_funcs = 0;
5047         card->options.sbp.supported_funcs = 0;
5048         card->info.diagass_support = 0;
5049         qeth_query_ipassists(card, QETH_PROT_IPV4);
5050         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
5051                 qeth_query_setadapterparms(card);
5052         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
5053                 qeth_query_setdiagass(card);
5054         return 0;
5055 out:
5056         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5057                 "an error on the device\n");
5058         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5059                 dev_name(&card->gdev->dev), rc);
5060         return rc;
5061 }
5062 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5063
5064 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5065                 struct qdio_buffer_element *element,
5066                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5067 {
5068         struct page *page = virt_to_page(element->addr);
5069         if (*pskb == NULL) {
5070                 if (qethbuffer->rx_skb) {
5071                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5072                         *pskb = qethbuffer->rx_skb;
5073                         qethbuffer->rx_skb = NULL;
5074                 } else {
5075                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5076                         if (!(*pskb))
5077                                 return -ENOMEM;
5078                 }
5079
5080                 skb_reserve(*pskb, ETH_HLEN);
5081                 if (data_len <= QETH_RX_PULL_LEN) {
5082                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
5083                                 data_len);
5084                 } else {
5085                         get_page(page);
5086                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5087                                element->addr + offset, QETH_RX_PULL_LEN);
5088                         skb_fill_page_desc(*pskb, *pfrag, page,
5089                                 offset + QETH_RX_PULL_LEN,
5090                                 data_len - QETH_RX_PULL_LEN);
5091                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5092                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
5093                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5094                         (*pfrag)++;
5095                 }
5096         } else {
5097                 get_page(page);
5098                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5099                 (*pskb)->data_len += data_len;
5100                 (*pskb)->len      += data_len;
5101                 (*pskb)->truesize += data_len;
5102                 (*pfrag)++;
5103         }
5104
5105
5106         return 0;
5107 }
5108
5109 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5110                 struct qeth_qdio_buffer *qethbuffer,
5111                 struct qdio_buffer_element **__element, int *__offset,
5112                 struct qeth_hdr **hdr)
5113 {
5114         struct qdio_buffer_element *element = *__element;
5115         struct qdio_buffer *buffer = qethbuffer->buffer;
5116         int offset = *__offset;
5117         struct sk_buff *skb = NULL;
5118         int skb_len = 0;
5119         void *data_ptr;
5120         int data_len;
5121         int headroom = 0;
5122         int use_rx_sg = 0;
5123         int frag = 0;
5124
5125         /* qeth_hdr must not cross element boundaries */
5126         if (element->length < offset + sizeof(struct qeth_hdr)) {
5127                 if (qeth_is_last_sbale(element))
5128                         return NULL;
5129                 element++;
5130                 offset = 0;
5131                 if (element->length < sizeof(struct qeth_hdr))
5132                         return NULL;
5133         }
5134         *hdr = element->addr + offset;
5135
5136         offset += sizeof(struct qeth_hdr);
5137         switch ((*hdr)->hdr.l2.id) {
5138         case QETH_HEADER_TYPE_LAYER2:
5139                 skb_len = (*hdr)->hdr.l2.pkt_length;
5140                 break;
5141         case QETH_HEADER_TYPE_LAYER3:
5142                 skb_len = (*hdr)->hdr.l3.length;
5143                 headroom = ETH_HLEN;
5144                 break;
5145         case QETH_HEADER_TYPE_OSN:
5146                 skb_len = (*hdr)->hdr.osn.pdu_length;
5147                 headroom = sizeof(struct qeth_hdr);
5148                 break;
5149         default:
5150                 break;
5151         }
5152
5153         if (!skb_len)
5154                 return NULL;
5155
5156         if (((skb_len >= card->options.rx_sg_cb) &&
5157              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5158              (!atomic_read(&card->force_alloc_skb))) ||
5159             (card->options.cq == QETH_CQ_ENABLED)) {
5160                 use_rx_sg = 1;
5161         } else {
5162                 skb = dev_alloc_skb(skb_len + headroom);
5163                 if (!skb)
5164                         goto no_mem;
5165                 if (headroom)
5166                         skb_reserve(skb, headroom);
5167         }
5168
5169         data_ptr = element->addr + offset;
5170         while (skb_len) {
5171                 data_len = min(skb_len, (int)(element->length - offset));
5172                 if (data_len) {
5173                         if (use_rx_sg) {
5174                                 if (qeth_create_skb_frag(qethbuffer, element,
5175                                     &skb, offset, &frag, data_len))
5176                                         goto no_mem;
5177                         } else {
5178                                 memcpy(skb_put(skb, data_len), data_ptr,
5179                                         data_len);
5180                         }
5181                 }
5182                 skb_len -= data_len;
5183                 if (skb_len) {
5184                         if (qeth_is_last_sbale(element)) {
5185                                 QETH_CARD_TEXT(card, 4, "unexeob");
5186                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5187                                 dev_kfree_skb_any(skb);
5188                                 card->stats.rx_errors++;
5189                                 return NULL;
5190                         }
5191                         element++;
5192                         offset = 0;
5193                         data_ptr = element->addr;
5194                 } else {
5195                         offset += data_len;
5196                 }
5197         }
5198         *__element = element;
5199         *__offset = offset;
5200         if (use_rx_sg && card->options.performance_stats) {
5201                 card->perf_stats.sg_skbs_rx++;
5202                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5203         }
5204         return skb;
5205 no_mem:
5206         if (net_ratelimit()) {
5207                 QETH_CARD_TEXT(card, 2, "noskbmem");
5208         }
5209         card->stats.rx_dropped++;
5210         return NULL;
5211 }
5212 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5213
5214 static void qeth_unregister_dbf_views(void)
5215 {
5216         int x;
5217         for (x = 0; x < QETH_DBF_INFOS; x++) {
5218                 debug_unregister(qeth_dbf[x].id);
5219                 qeth_dbf[x].id = NULL;
5220         }
5221 }
5222
5223 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5224 {
5225         char dbf_txt_buf[32];
5226         va_list args;
5227
5228         if (!debug_level_enabled(id, level))
5229                 return;
5230         va_start(args, fmt);
5231         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5232         va_end(args);
5233         debug_text_event(id, level, dbf_txt_buf);
5234 }
5235 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5236
5237 static int qeth_register_dbf_views(void)
5238 {
5239         int ret;
5240         int x;
5241
5242         for (x = 0; x < QETH_DBF_INFOS; x++) {
5243                 /* register the areas */
5244                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5245                                                 qeth_dbf[x].pages,
5246                                                 qeth_dbf[x].areas,
5247                                                 qeth_dbf[x].len);
5248                 if (qeth_dbf[x].id == NULL) {
5249                         qeth_unregister_dbf_views();
5250                         return -ENOMEM;
5251                 }
5252
5253                 /* register a view */
5254                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5255                 if (ret) {
5256                         qeth_unregister_dbf_views();
5257                         return ret;
5258                 }
5259
5260                 /* set a passing level */
5261                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5262         }
5263
5264         return 0;
5265 }
5266
5267 int qeth_core_load_discipline(struct qeth_card *card,
5268                 enum qeth_discipline_id discipline)
5269 {
5270         int rc = 0;
5271         mutex_lock(&qeth_mod_mutex);
5272         switch (discipline) {
5273         case QETH_DISCIPLINE_LAYER3:
5274                 card->discipline = try_then_request_module(
5275                         symbol_get(qeth_l3_discipline), "qeth_l3");
5276                 break;
5277         case QETH_DISCIPLINE_LAYER2:
5278                 card->discipline = try_then_request_module(
5279                         symbol_get(qeth_l2_discipline), "qeth_l2");
5280                 break;
5281         }
5282         if (!card->discipline) {
5283                 dev_err(&card->gdev->dev, "There is no kernel module to "
5284                         "support discipline %d\n", discipline);
5285                 rc = -EINVAL;
5286         }
5287         mutex_unlock(&qeth_mod_mutex);
5288         return rc;
5289 }
5290
5291 void qeth_core_free_discipline(struct qeth_card *card)
5292 {
5293         if (card->options.layer2)
5294                 symbol_put(qeth_l2_discipline);
5295         else
5296                 symbol_put(qeth_l3_discipline);
5297         card->discipline = NULL;
5298 }
5299
5300 static const struct device_type qeth_generic_devtype = {
5301         .name = "qeth_generic",
5302         .groups = qeth_generic_attr_groups,
5303 };
5304 static const struct device_type qeth_osn_devtype = {
5305         .name = "qeth_osn",
5306         .groups = qeth_osn_attr_groups,
5307 };
5308
5309 #define DBF_NAME_LEN    20
5310
5311 struct qeth_dbf_entry {
5312         char dbf_name[DBF_NAME_LEN];
5313         debug_info_t *dbf_info;
5314         struct list_head dbf_list;
5315 };
5316
5317 static LIST_HEAD(qeth_dbf_list);
5318 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5319
5320 static debug_info_t *qeth_get_dbf_entry(char *name)
5321 {
5322         struct qeth_dbf_entry *entry;
5323         debug_info_t *rc = NULL;
5324
5325         mutex_lock(&qeth_dbf_list_mutex);
5326         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5327                 if (strcmp(entry->dbf_name, name) == 0) {
5328                         rc = entry->dbf_info;
5329                         break;
5330                 }
5331         }
5332         mutex_unlock(&qeth_dbf_list_mutex);
5333         return rc;
5334 }
5335
5336 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5337 {
5338         struct qeth_dbf_entry *new_entry;
5339
5340         card->debug = debug_register(name, 2, 1, 8);
5341         if (!card->debug) {
5342                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5343                 goto err;
5344         }
5345         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5346                 goto err_dbg;
5347         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5348         if (!new_entry)
5349                 goto err_dbg;
5350         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5351         new_entry->dbf_info = card->debug;
5352         mutex_lock(&qeth_dbf_list_mutex);
5353         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5354         mutex_unlock(&qeth_dbf_list_mutex);
5355
5356         return 0;
5357
5358 err_dbg:
5359         debug_unregister(card->debug);
5360 err:
5361         return -ENOMEM;
5362 }
5363
5364 static void qeth_clear_dbf_list(void)
5365 {
5366         struct qeth_dbf_entry *entry, *tmp;
5367
5368         mutex_lock(&qeth_dbf_list_mutex);
5369         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5370                 list_del(&entry->dbf_list);
5371                 debug_unregister(entry->dbf_info);
5372                 kfree(entry);
5373         }
5374         mutex_unlock(&qeth_dbf_list_mutex);
5375 }
5376
5377 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5378 {
5379         struct qeth_card *card;
5380         struct device *dev;
5381         int rc;
5382         unsigned long flags;
5383         char dbf_name[DBF_NAME_LEN];
5384
5385         QETH_DBF_TEXT(SETUP, 2, "probedev");
5386
5387         dev = &gdev->dev;
5388         if (!get_device(dev))
5389                 return -ENODEV;
5390
5391         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5392
5393         card = qeth_alloc_card();
5394         if (!card) {
5395                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5396                 rc = -ENOMEM;
5397                 goto err_dev;
5398         }
5399
5400         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5401                 dev_name(&gdev->dev));
5402         card->debug = qeth_get_dbf_entry(dbf_name);
5403         if (!card->debug) {
5404                 rc = qeth_add_dbf_entry(card, dbf_name);
5405                 if (rc)
5406                         goto err_card;
5407         }
5408
5409         card->read.ccwdev  = gdev->cdev[0];
5410         card->write.ccwdev = gdev->cdev[1];
5411         card->data.ccwdev  = gdev->cdev[2];
5412         dev_set_drvdata(&gdev->dev, card);
5413         card->gdev = gdev;
5414         gdev->cdev[0]->handler = qeth_irq;
5415         gdev->cdev[1]->handler = qeth_irq;
5416         gdev->cdev[2]->handler = qeth_irq;
5417
5418         rc = qeth_determine_card_type(card);
5419         if (rc) {
5420                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5421                 goto err_card;
5422         }
5423         rc = qeth_setup_card(card);
5424         if (rc) {
5425                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5426                 goto err_card;
5427         }
5428
5429         if (card->info.type == QETH_CARD_TYPE_OSN)
5430                 gdev->dev.type = &qeth_osn_devtype;
5431         else
5432                 gdev->dev.type = &qeth_generic_devtype;
5433
5434         switch (card->info.type) {
5435         case QETH_CARD_TYPE_OSN:
5436         case QETH_CARD_TYPE_OSM:
5437                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5438                 if (rc)
5439                         goto err_card;
5440                 rc = card->discipline->setup(card->gdev);
5441                 if (rc)
5442                         goto err_disc;
5443         case QETH_CARD_TYPE_OSD:
5444         case QETH_CARD_TYPE_OSX:
5445         default:
5446                 break;
5447         }
5448
5449         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5450         list_add_tail(&card->list, &qeth_core_card_list.list);
5451         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5452
5453         qeth_determine_capabilities(card);
5454         return 0;
5455
5456 err_disc:
5457         qeth_core_free_discipline(card);
5458 err_card:
5459         qeth_core_free_card(card);
5460 err_dev:
5461         put_device(dev);
5462         return rc;
5463 }
5464
5465 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5466 {
5467         unsigned long flags;
5468         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5469
5470         QETH_DBF_TEXT(SETUP, 2, "removedv");
5471
5472         if (card->discipline) {
5473                 card->discipline->remove(gdev);
5474                 qeth_core_free_discipline(card);
5475         }
5476
5477         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5478         list_del(&card->list);
5479         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5480         qeth_core_free_card(card);
5481         dev_set_drvdata(&gdev->dev, NULL);
5482         put_device(&gdev->dev);
5483         return;
5484 }
5485
5486 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5487 {
5488         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5489         int rc = 0;
5490         int def_discipline;
5491
5492         if (!card->discipline) {
5493                 if (card->info.type == QETH_CARD_TYPE_IQD)
5494                         def_discipline = QETH_DISCIPLINE_LAYER3;
5495                 else
5496                         def_discipline = QETH_DISCIPLINE_LAYER2;
5497                 rc = qeth_core_load_discipline(card, def_discipline);
5498                 if (rc)
5499                         goto err;
5500                 rc = card->discipline->setup(card->gdev);
5501                 if (rc)
5502                         goto err;
5503         }
5504         rc = card->discipline->set_online(gdev);
5505 err:
5506         return rc;
5507 }
5508
5509 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5510 {
5511         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5512         return card->discipline->set_offline(gdev);
5513 }
5514
5515 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5516 {
5517         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5518         if (card->discipline && card->discipline->shutdown)
5519                 card->discipline->shutdown(gdev);
5520 }
5521
5522 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5523 {
5524         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5525         if (card->discipline && card->discipline->prepare)
5526                 return card->discipline->prepare(gdev);
5527         return 0;
5528 }
5529
5530 static void qeth_core_complete(struct ccwgroup_device *gdev)
5531 {
5532         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5533         if (card->discipline && card->discipline->complete)
5534                 card->discipline->complete(gdev);
5535 }
5536
5537 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5538 {
5539         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5540         if (card->discipline && card->discipline->freeze)
5541                 return card->discipline->freeze(gdev);
5542         return 0;
5543 }
5544
5545 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5546 {
5547         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5548         if (card->discipline && card->discipline->thaw)
5549                 return card->discipline->thaw(gdev);
5550         return 0;
5551 }
5552
5553 static int qeth_core_restore(struct ccwgroup_device *gdev)
5554 {
5555         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5556         if (card->discipline && card->discipline->restore)
5557                 return card->discipline->restore(gdev);
5558         return 0;
5559 }
5560
5561 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5562         .driver = {
5563                 .owner = THIS_MODULE,
5564                 .name = "qeth",
5565         },
5566         .setup = qeth_core_probe_device,
5567         .remove = qeth_core_remove_device,
5568         .set_online = qeth_core_set_online,
5569         .set_offline = qeth_core_set_offline,
5570         .shutdown = qeth_core_shutdown,
5571         .prepare = qeth_core_prepare,
5572         .complete = qeth_core_complete,
5573         .freeze = qeth_core_freeze,
5574         .thaw = qeth_core_thaw,
5575         .restore = qeth_core_restore,
5576 };
5577
5578 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5579                                             const char *buf, size_t count)
5580 {
5581         int err;
5582
5583         err = ccwgroup_create_dev(qeth_core_root_dev,
5584                                   &qeth_core_ccwgroup_driver, 3, buf);
5585
5586         return err ? err : count;
5587 }
5588 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5589
5590 static struct attribute *qeth_drv_attrs[] = {
5591         &driver_attr_group.attr,
5592         NULL,
5593 };
5594 static struct attribute_group qeth_drv_attr_group = {
5595         .attrs = qeth_drv_attrs,
5596 };
5597 static const struct attribute_group *qeth_drv_attr_groups[] = {
5598         &qeth_drv_attr_group,
5599         NULL,
5600 };
5601
5602 static struct {
5603         const char str[ETH_GSTRING_LEN];
5604 } qeth_ethtool_stats_keys[] = {
5605 /*  0 */{"rx skbs"},
5606         {"rx buffers"},
5607         {"tx skbs"},
5608         {"tx buffers"},
5609         {"tx skbs no packing"},
5610         {"tx buffers no packing"},
5611         {"tx skbs packing"},
5612         {"tx buffers packing"},
5613         {"tx sg skbs"},
5614         {"tx sg frags"},
5615 /* 10 */{"rx sg skbs"},
5616         {"rx sg frags"},
5617         {"rx sg page allocs"},
5618         {"tx large kbytes"},
5619         {"tx large count"},
5620         {"tx pk state ch n->p"},
5621         {"tx pk state ch p->n"},
5622         {"tx pk watermark low"},
5623         {"tx pk watermark high"},
5624         {"queue 0 buffer usage"},
5625 /* 20 */{"queue 1 buffer usage"},
5626         {"queue 2 buffer usage"},
5627         {"queue 3 buffer usage"},
5628         {"rx poll time"},
5629         {"rx poll count"},
5630         {"rx do_QDIO time"},
5631         {"rx do_QDIO count"},
5632         {"tx handler time"},
5633         {"tx handler count"},
5634         {"tx time"},
5635 /* 30 */{"tx count"},
5636         {"tx do_QDIO time"},
5637         {"tx do_QDIO count"},
5638         {"tx csum"},
5639         {"tx lin"},
5640         {"cq handler count"},
5641         {"cq handler time"}
5642 };
5643
5644 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5645 {
5646         switch (stringset) {
5647         case ETH_SS_STATS:
5648                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5649         default:
5650                 return -EINVAL;
5651         }
5652 }
5653 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5654
5655 void qeth_core_get_ethtool_stats(struct net_device *dev,
5656                 struct ethtool_stats *stats, u64 *data)
5657 {
5658         struct qeth_card *card = dev->ml_priv;
5659         data[0] = card->stats.rx_packets -
5660                                 card->perf_stats.initial_rx_packets;
5661         data[1] = card->perf_stats.bufs_rec;
5662         data[2] = card->stats.tx_packets -
5663                                 card->perf_stats.initial_tx_packets;
5664         data[3] = card->perf_stats.bufs_sent;
5665         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5666                         - card->perf_stats.skbs_sent_pack;
5667         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5668         data[6] = card->perf_stats.skbs_sent_pack;
5669         data[7] = card->perf_stats.bufs_sent_pack;
5670         data[8] = card->perf_stats.sg_skbs_sent;
5671         data[9] = card->perf_stats.sg_frags_sent;
5672         data[10] = card->perf_stats.sg_skbs_rx;
5673         data[11] = card->perf_stats.sg_frags_rx;
5674         data[12] = card->perf_stats.sg_alloc_page_rx;
5675         data[13] = (card->perf_stats.large_send_bytes >> 10);
5676         data[14] = card->perf_stats.large_send_cnt;
5677         data[15] = card->perf_stats.sc_dp_p;
5678         data[16] = card->perf_stats.sc_p_dp;
5679         data[17] = QETH_LOW_WATERMARK_PACK;
5680         data[18] = QETH_HIGH_WATERMARK_PACK;
5681         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5682         data[20] = (card->qdio.no_out_queues > 1) ?
5683                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5684         data[21] = (card->qdio.no_out_queues > 2) ?
5685                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5686         data[22] = (card->qdio.no_out_queues > 3) ?
5687                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5688         data[23] = card->perf_stats.inbound_time;
5689         data[24] = card->perf_stats.inbound_cnt;
5690         data[25] = card->perf_stats.inbound_do_qdio_time;
5691         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5692         data[27] = card->perf_stats.outbound_handler_time;
5693         data[28] = card->perf_stats.outbound_handler_cnt;
5694         data[29] = card->perf_stats.outbound_time;
5695         data[30] = card->perf_stats.outbound_cnt;
5696         data[31] = card->perf_stats.outbound_do_qdio_time;
5697         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5698         data[33] = card->perf_stats.tx_csum;
5699         data[34] = card->perf_stats.tx_lin;
5700         data[35] = card->perf_stats.cq_cnt;
5701         data[36] = card->perf_stats.cq_time;
5702 }
5703 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5704
5705 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5706 {
5707         switch (stringset) {
5708         case ETH_SS_STATS:
5709                 memcpy(data, &qeth_ethtool_stats_keys,
5710                         sizeof(qeth_ethtool_stats_keys));
5711                 break;
5712         default:
5713                 WARN_ON(1);
5714                 break;
5715         }
5716 }
5717 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5718
5719 void qeth_core_get_drvinfo(struct net_device *dev,
5720                 struct ethtool_drvinfo *info)
5721 {
5722         struct qeth_card *card = dev->ml_priv;
5723
5724         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5725                 sizeof(info->driver));
5726         strlcpy(info->version, "1.0", sizeof(info->version));
5727         strlcpy(info->fw_version, card->info.mcl_level,
5728                 sizeof(info->fw_version));
5729         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5730                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5731 }
5732 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5733
5734 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5735 /* Autoneg and full-duplex are supported and advertized uncondionally.       */
5736 /* Always advertize and support all speeds up to specified, and only one     */
5737 /* specified port type.                                                      */
5738 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5739                                 int maxspeed, int porttype)
5740 {
5741         int port_sup, port_adv, spd_sup, spd_adv;
5742
5743         switch (porttype) {
5744         case PORT_TP:
5745                 port_sup = SUPPORTED_TP;
5746                 port_adv = ADVERTISED_TP;
5747                 break;
5748         case PORT_FIBRE:
5749                 port_sup = SUPPORTED_FIBRE;
5750                 port_adv = ADVERTISED_FIBRE;
5751                 break;
5752         default:
5753                 port_sup = SUPPORTED_TP;
5754                 port_adv = ADVERTISED_TP;
5755                 WARN_ON_ONCE(1);
5756         }
5757
5758         /* "Fallthrough" case'es ordered from high to low result in setting  */
5759         /* flags cumulatively, starting from the specified speed and down to */
5760         /* the lowest possible.                                              */
5761         spd_sup = 0;
5762         spd_adv = 0;
5763         switch (maxspeed) {
5764         case SPEED_10000:
5765                 spd_sup |= SUPPORTED_10000baseT_Full;
5766                 spd_adv |= ADVERTISED_10000baseT_Full;
5767         case SPEED_1000:
5768                 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5769                 spd_adv |= ADVERTISED_1000baseT_Half |
5770                                                 ADVERTISED_1000baseT_Full;
5771         case SPEED_100:
5772                 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5773                 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5774         case SPEED_10:
5775                 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5776                 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5777         break;
5778         default:
5779                 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5780                 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5781                 WARN_ON_ONCE(1);
5782         }
5783         ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5784         ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5785 }
5786
5787 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5788                                         struct ethtool_cmd *ecmd)
5789 {
5790         struct qeth_card *card = netdev->ml_priv;
5791         enum qeth_link_types link_type;
5792         struct carrier_info carrier_info;
5793         u32 speed;
5794
5795         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5796                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5797         else
5798                 link_type = card->info.link_type;
5799
5800         ecmd->transceiver = XCVR_INTERNAL;
5801         ecmd->duplex = DUPLEX_FULL;
5802         ecmd->autoneg = AUTONEG_ENABLE;
5803
5804         switch (link_type) {
5805         case QETH_LINK_TYPE_FAST_ETH:
5806         case QETH_LINK_TYPE_LANE_ETH100:
5807                 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5808                 speed = SPEED_100;
5809                 ecmd->port = PORT_TP;
5810                 break;
5811
5812         case QETH_LINK_TYPE_GBIT_ETH:
5813         case QETH_LINK_TYPE_LANE_ETH1000:
5814                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5815                 speed = SPEED_1000;
5816                 ecmd->port = PORT_FIBRE;
5817                 break;
5818
5819         case QETH_LINK_TYPE_10GBIT_ETH:
5820                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5821                 speed = SPEED_10000;
5822                 ecmd->port = PORT_FIBRE;
5823                 break;
5824
5825         default:
5826                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5827                 speed = SPEED_10;
5828                 ecmd->port = PORT_TP;
5829         }
5830         ethtool_cmd_speed_set(ecmd, speed);
5831
5832         /* Check if we can obtain more accurate information.     */
5833         /* If QUERY_CARD_INFO command is not supported or fails, */
5834         /* just return the heuristics that was filled above.     */
5835         if (qeth_query_card_info(card, &carrier_info) != 0)
5836                 return 0;
5837
5838         netdev_dbg(netdev,
5839         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5840                         carrier_info.card_type,
5841                         carrier_info.port_mode,
5842                         carrier_info.port_speed);
5843
5844         /* Update attributes for which we've obtained more authoritative */
5845         /* information, leave the rest the way they where filled above.  */
5846         switch (carrier_info.card_type) {
5847         case CARD_INFO_TYPE_1G_COPPER_A:
5848         case CARD_INFO_TYPE_1G_COPPER_B:
5849                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5850                 ecmd->port = PORT_TP;
5851                 break;
5852         case CARD_INFO_TYPE_1G_FIBRE_A:
5853         case CARD_INFO_TYPE_1G_FIBRE_B:
5854                 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5855                 ecmd->port = PORT_FIBRE;
5856                 break;
5857         case CARD_INFO_TYPE_10G_FIBRE_A:
5858         case CARD_INFO_TYPE_10G_FIBRE_B:
5859                 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5860                 ecmd->port = PORT_FIBRE;
5861                 break;
5862         }
5863
5864         switch (carrier_info.port_mode) {
5865         case CARD_INFO_PORTM_FULLDUPLEX:
5866                 ecmd->duplex = DUPLEX_FULL;
5867                 break;
5868         case CARD_INFO_PORTM_HALFDUPLEX:
5869                 ecmd->duplex = DUPLEX_HALF;
5870                 break;
5871         }
5872
5873         switch (carrier_info.port_speed) {
5874         case CARD_INFO_PORTS_10M:
5875                 speed = SPEED_10;
5876                 break;
5877         case CARD_INFO_PORTS_100M:
5878                 speed = SPEED_100;
5879                 break;
5880         case CARD_INFO_PORTS_1G:
5881                 speed = SPEED_1000;
5882                 break;
5883         case CARD_INFO_PORTS_10G:
5884                 speed = SPEED_10000;
5885                 break;
5886         }
5887         ethtool_cmd_speed_set(ecmd, speed);
5888
5889         return 0;
5890 }
5891 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5892
5893 static int __init qeth_core_init(void)
5894 {
5895         int rc;
5896
5897         pr_info("loading core functions\n");
5898         INIT_LIST_HEAD(&qeth_core_card_list.list);
5899         INIT_LIST_HEAD(&qeth_dbf_list);
5900         rwlock_init(&qeth_core_card_list.rwlock);
5901         mutex_init(&qeth_mod_mutex);
5902
5903         qeth_wq = create_singlethread_workqueue("qeth_wq");
5904
5905         rc = qeth_register_dbf_views();
5906         if (rc)
5907                 goto out_err;
5908         qeth_core_root_dev = root_device_register("qeth");
5909         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
5910         if (rc)
5911                 goto register_err;
5912         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5913                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5914         if (!qeth_core_header_cache) {
5915                 rc = -ENOMEM;
5916                 goto slab_err;
5917         }
5918         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5919                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5920         if (!qeth_qdio_outbuf_cache) {
5921                 rc = -ENOMEM;
5922                 goto cqslab_err;
5923         }
5924         rc = ccw_driver_register(&qeth_ccw_driver);
5925         if (rc)
5926                 goto ccw_err;
5927         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5928         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5929         if (rc)
5930                 goto ccwgroup_err;
5931
5932         return 0;
5933
5934 ccwgroup_err:
5935         ccw_driver_unregister(&qeth_ccw_driver);
5936 ccw_err:
5937         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5938 cqslab_err:
5939         kmem_cache_destroy(qeth_core_header_cache);
5940 slab_err:
5941         root_device_unregister(qeth_core_root_dev);
5942 register_err:
5943         qeth_unregister_dbf_views();
5944 out_err:
5945         pr_err("Initializing the qeth device driver failed\n");
5946         return rc;
5947 }
5948
5949 static void __exit qeth_core_exit(void)
5950 {
5951         qeth_clear_dbf_list();
5952         destroy_workqueue(qeth_wq);
5953         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5954         ccw_driver_unregister(&qeth_ccw_driver);
5955         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5956         kmem_cache_destroy(qeth_core_header_cache);
5957         root_device_unregister(qeth_core_root_dev);
5958         qeth_unregister_dbf_views();
5959         pr_info("core functions removed\n");
5960 }
5961
5962 module_init(qeth_core_init);
5963 module_exit(qeth_core_exit);
5964 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5965 MODULE_DESCRIPTION("qeth core functions");
5966 MODULE_LICENSE("GPL");