drivers/s390/net/qeth_core_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *    Copyright IBM Corp. 2007, 2009
   4  *    Author(s): Utz Bacher <[email protected]>,
   5  *               Frank Pavlic <[email protected]>,
   6  *               Thomas Spatzier <[email protected]>,
   7  *               Frank Blaschka <[email protected]>
   8  */
   9
  10 #define KMSG_COMPONENT "qeth"
  11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  13 #include <linux/compat.h>
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/log2.h>
  20 #include <linux/ip.h>
  21 #include <linux/tcp.h>
  22 #include <linux/mii.h>
  23 #include <linux/kthread.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/netdev_features.h>
  28 #include <linux/skbuff.h>
  29 #include <linux/vmalloc.h>
  30
  31 #include <net/iucv/af_iucv.h>
  32 #include <net/dsfield.h>
  33
  34 #include <asm/ebcdic.h>
  35 #include <asm/chpid.h>
  36 #include <asm/io.h>
  37 #include <asm/sysinfo.h>
  38 #include <asm/diag.h>
  39 #include <asm/cio.h>
  40 #include <asm/ccwdev.h>
  41 #include <asm/cpcmd.h>
  42
  43 #include "qeth_core.h"
  44
  45 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  46         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  47         /*                   N  P  A    M  L  V                      H  */
  48         [QETH_DBF_SETUP] = {"qeth_setup",
  49                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  50         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  51                             &debug_sprintf_view, NULL},
  52         [QETH_DBF_CTRL]  = {"qeth_control",
  53                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  54 };
  55 EXPORT_SYMBOL_GPL(qeth_dbf);
  56
  57 struct qeth_card_list_struct qeth_core_card_list;
  58 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  59 struct kmem_cache *qeth_core_header_cache;
  60 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  61 static struct kmem_cache *qeth_qdio_outbuf_cache;
  62
  63 static struct device *qeth_core_root_dev;
  64 static struct lock_class_key qdio_out_skb_queue_key;
  65
  66 static void qeth_send_control_data_cb(struct qeth_card *card,
  67                                       struct qeth_channel *channel,
  68                                       struct qeth_cmd_buffer *iob);
  69 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  70 static void qeth_free_buffer_pool(struct qeth_card *);
  71 static int qeth_qdio_establish(struct qeth_card *);
  72 static void qeth_free_qdio_buffers(struct qeth_card *);
  73 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  74                 struct qeth_qdio_out_buffer *buf,
  75                 enum iucv_tx_notify notification);
  76 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  77 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  78
  79 struct workqueue_struct *qeth_wq;
  80 EXPORT_SYMBOL_GPL(qeth_wq);
  81
  82 int qeth_card_hw_is_reachable(struct qeth_card *card)
  83 {
  84         return (card->state == CARD_STATE_SOFTSETUP) ||
  85                 (card->state == CARD_STATE_UP);
  86 }
  87 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
  88
  89 static void qeth_close_dev_handler(struct work_struct *work)
  90 {
  91         struct qeth_card *card;
  92
  93         card = container_of(work, struct qeth_card, close_dev_work);
  94         QETH_CARD_TEXT(card, 2, "cldevhdl");
  95         rtnl_lock();
  96         dev_close(card->dev);
  97         rtnl_unlock();
  98         ccwgroup_set_offline(card->gdev);
  99 }
 100
 101 void qeth_close_dev(struct qeth_card *card)
 102 {
 103         QETH_CARD_TEXT(card, 2, "cldevsubm");
 104         queue_work(qeth_wq, &card->close_dev_work);
 105 }
 106 EXPORT_SYMBOL_GPL(qeth_close_dev);
 107
 108 static const char *qeth_get_cardname(struct qeth_card *card)
 109 {
 110         if (card->info.guestlan) {
 111                 switch (card->info.type) {
 112                 case QETH_CARD_TYPE_OSD:
 113                         return " Virtual NIC QDIO";
 114                 case QETH_CARD_TYPE_IQD:
 115                         return " Virtual NIC Hiper";
 116                 case QETH_CARD_TYPE_OSM:
 117                         return " Virtual NIC QDIO - OSM";
 118                 case QETH_CARD_TYPE_OSX:
 119                         return " Virtual NIC QDIO - OSX";
 120                 default:
 121                         return " unknown";
 122                 }
 123         } else {
 124                 switch (card->info.type) {
 125                 case QETH_CARD_TYPE_OSD:
 126                         return " OSD Express";
 127                 case QETH_CARD_TYPE_IQD:
 128                         return " HiperSockets";
 129                 case QETH_CARD_TYPE_OSN:
 130                         return " OSN QDIO";
 131                 case QETH_CARD_TYPE_OSM:
 132                         return " OSM QDIO";
 133                 case QETH_CARD_TYPE_OSX:
 134                         return " OSX QDIO";
 135                 default:
 136                         return " unknown";
 137                 }
 138         }
 139         return " n/a";
 140 }
 141
 142 /* max length to be returned: 14 */
 143 const char *qeth_get_cardname_short(struct qeth_card *card)
 144 {
 145         if (card->info.guestlan) {
 146                 switch (card->info.type) {
 147                 case QETH_CARD_TYPE_OSD:
 148                         return "Virt.NIC QDIO";
 149                 case QETH_CARD_TYPE_IQD:
 150                         return "Virt.NIC Hiper";
 151                 case QETH_CARD_TYPE_OSM:
 152                         return "Virt.NIC OSM";
 153                 case QETH_CARD_TYPE_OSX:
 154                         return "Virt.NIC OSX";
 155                 default:
 156                         return "unknown";
 157                 }
 158         } else {
 159                 switch (card->info.type) {
 160                 case QETH_CARD_TYPE_OSD:
 161                         switch (card->info.link_type) {
 162                         case QETH_LINK_TYPE_FAST_ETH:
 163                                 return "OSD_100";
 164                         case QETH_LINK_TYPE_HSTR:
 165                                 return "HSTR";
 166                         case QETH_LINK_TYPE_GBIT_ETH:
 167                                 return "OSD_1000";
 168                         case QETH_LINK_TYPE_10GBIT_ETH:
 169                                 return "OSD_10GIG";
 170                         case QETH_LINK_TYPE_25GBIT_ETH:
 171                                 return "OSD_25GIG";
 172                         case QETH_LINK_TYPE_LANE_ETH100:
 173                                 return "OSD_FE_LANE";
 174                         case QETH_LINK_TYPE_LANE_TR:
 175                                 return "OSD_TR_LANE";
 176                         case QETH_LINK_TYPE_LANE_ETH1000:
 177                                 return "OSD_GbE_LANE";
 178                         case QETH_LINK_TYPE_LANE:
 179                                 return "OSD_ATM_LANE";
 180                         default:
 181                                 return "OSD_Express";
 182                         }
 183                 case QETH_CARD_TYPE_IQD:
 184                         return "HiperSockets";
 185                 case QETH_CARD_TYPE_OSN:
 186                         return "OSN";
 187                 case QETH_CARD_TYPE_OSM:
 188                         return "OSM_1000";
 189                 case QETH_CARD_TYPE_OSX:
 190                         return "OSX_10GIG";
 191                 default:
 192                         return "unknown";
 193                 }
 194         }
 195         return "n/a";
 196 }
 197
 198 void qeth_set_recovery_task(struct qeth_card *card)
 199 {
 200         card->recovery_task = current;
 201 }
 202 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 203
 204 void qeth_clear_recovery_task(struct qeth_card *card)
 205 {
 206         card->recovery_task = NULL;
 207 }
 208 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 209
 210 static bool qeth_is_recovery_task(const struct qeth_card *card)
 211 {
 212         return card->recovery_task == current;
 213 }
 214
 215 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 216                          int clear_start_mask)
 217 {
 218         unsigned long flags;
 219
 220         spin_lock_irqsave(&card->thread_mask_lock, flags);
 221         card->thread_allowed_mask = threads;
 222         if (clear_start_mask)
 223                 card->thread_start_mask &= threads;
 224         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 225         wake_up(&card->wait_q);
 226 }
 227 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 228
 229 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 230 {
 231         unsigned long flags;
 232         int rc = 0;
 233
 234         spin_lock_irqsave(&card->thread_mask_lock, flags);
 235         rc = (card->thread_running_mask & threads);
 236         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 237         return rc;
 238 }
 239 EXPORT_SYMBOL_GPL(qeth_threads_running);
 240
 241 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 242 {
 243         if (qeth_is_recovery_task(card))
 244                 return 0;
 245         return wait_event_interruptible(card->wait_q,
 246                         qeth_threads_running(card, threads) == 0);
 247 }
 248 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 249
 250 void qeth_clear_working_pool_list(struct qeth_card *card)
 251 {
 252         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 253
 254         QETH_CARD_TEXT(card, 5, "clwrklst");
 255         list_for_each_entry_safe(pool_entry, tmp,
 256                             &card->qdio.in_buf_pool.entry_list, list){
 257                         list_del(&pool_entry->list);
 258         }
 259 }
 260 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 261
 262 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 263 {
 264         struct qeth_buffer_pool_entry *pool_entry;
 265         void *ptr;
 266         int i, j;
 267
 268         QETH_CARD_TEXT(card, 5, "alocpool");
 269         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 270                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 271                 if (!pool_entry) {
 272                         qeth_free_buffer_pool(card);
 273                         return -ENOMEM;
 274                 }
 275                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 276                         ptr = (void *) __get_free_page(GFP_KERNEL);
 277                         if (!ptr) {
 278                                 while (j > 0)
 279                                         free_page((unsigned long)
 280                                                   pool_entry->elements[--j]);
 281                                 kfree(pool_entry);
 282                                 qeth_free_buffer_pool(card);
 283                                 return -ENOMEM;
 284                         }
 285                         pool_entry->elements[j] = ptr;
 286                 }
 287                 list_add(&pool_entry->init_list,
 288                          &card->qdio.init_pool.entry_list);
 289         }
 290         return 0;
 291 }
 292
 293 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 294 {
 295         QETH_CARD_TEXT(card, 2, "realcbp");
 296
 297         if ((card->state != CARD_STATE_DOWN) &&
 298             (card->state != CARD_STATE_RECOVER))
 299                 return -EPERM;
 300
 301         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 302         qeth_clear_working_pool_list(card);
 303         qeth_free_buffer_pool(card);
 304         card->qdio.in_buf_pool.buf_count = bufcnt;
 305         card->qdio.init_pool.buf_count = bufcnt;
 306         return qeth_alloc_buffer_pool(card);
 307 }
 308 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 309
 310 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 311 {
 312         if (!q)
 313                 return;
 314
 315         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 316         kfree(q);
 317 }
 318
 319 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 320 {
 321         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 322         int i;
 323
 324         if (!q)
 325                 return NULL;
 326
 327         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 328                 kfree(q);
 329                 return NULL;
 330         }
 331
 332         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 333                 q->bufs[i].buffer = q->qdio_bufs[i];
 334
 335         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 336         return q;
 337 }
 338
 339 static int qeth_cq_init(struct qeth_card *card)
 340 {
 341         int rc;
 342
 343         if (card->options.cq == QETH_CQ_ENABLED) {
 344                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 345                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 346                                    QDIO_MAX_BUFFERS_PER_Q);
 347                 card->qdio.c_q->next_buf_to_init = 127;
 348                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 349                              card->qdio.no_in_queues - 1, 0,
 350                              127);
 351                 if (rc) {
 352                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 353                         goto out;
 354                 }
 355         }
 356         rc = 0;
 357 out:
 358         return rc;
 359 }
 360
 361 static int qeth_alloc_cq(struct qeth_card *card)
 362 {
 363         int rc;
 364
 365         if (card->options.cq == QETH_CQ_ENABLED) {
 366                 int i;
 367                 struct qdio_outbuf_state *outbuf_states;
 368
 369                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 370                 card->qdio.c_q = qeth_alloc_qdio_queue();
 371                 if (!card->qdio.c_q) {
 372                         rc = -1;
 373                         goto kmsg_out;
 374                 }
 375                 card->qdio.no_in_queues = 2;
 376                 card->qdio.out_bufstates =
 377                         kcalloc(card->qdio.no_out_queues *
 378                                         QDIO_MAX_BUFFERS_PER_Q,
 379                                 sizeof(struct qdio_outbuf_state),
 380                                 GFP_KERNEL);
 381                 outbuf_states = card->qdio.out_bufstates;
 382                 if (outbuf_states == NULL) {
 383                         rc = -1;
 384                         goto free_cq_out;
 385                 }
 386                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 387                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 388                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 389                 }
 390         } else {
 391                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 392                 card->qdio.c_q = NULL;
 393                 card->qdio.no_in_queues = 1;
 394         }
 395         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 396         rc = 0;
 397 out:
 398         return rc;
 399 free_cq_out:
 400         qeth_free_qdio_queue(card->qdio.c_q);
 401         card->qdio.c_q = NULL;
 402 kmsg_out:
 403         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 404         goto out;
 405 }
 406
 407 static void qeth_free_cq(struct qeth_card *card)
 408 {
 409         if (card->qdio.c_q) {
 410                 --card->qdio.no_in_queues;
 411                 qeth_free_qdio_queue(card->qdio.c_q);
 412                 card->qdio.c_q = NULL;
 413         }
 414         kfree(card->qdio.out_bufstates);
 415         card->qdio.out_bufstates = NULL;
 416 }
 417
 418 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 419                                                         int delayed)
 420 {
 421         enum iucv_tx_notify n;
 422
 423         switch (sbalf15) {
 424         case 0:
 425                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 426                 break;
 427         case 4:
 428         case 16:
 429         case 17:
 430         case 18:
 431                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 432                         TX_NOTIFY_UNREACHABLE;
 433                 break;
 434         default:
 435                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 436                         TX_NOTIFY_GENERALERROR;
 437                 break;
 438         }
 439
 440         return n;
 441 }
 442
 443 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
 444                                          int forced_cleanup)
 445 {
 446         if (q->card->options.cq != QETH_CQ_ENABLED)
 447                 return;
 448
 449         if (q->bufs[bidx]->next_pending != NULL) {
 450                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 451                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 452
 453                 while (c) {
 454                         if (forced_cleanup ||
 455                             atomic_read(&c->state) ==
 456                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 457                                 struct qeth_qdio_out_buffer *f = c;
 458                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 459                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 460                                 /* release here to avoid interleaving between
 461                                    outbound tasklet and inbound tasklet
 462                                    regarding notifications and lifecycle */
 463                                 qeth_release_skbs(c);
 464
 465                                 c = f->next_pending;
 466                                 WARN_ON_ONCE(head->next_pending != f);
 467                                 head->next_pending = c;
 468                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 469                         } else {
 470                                 head = c;
 471                                 c = c->next_pending;
 472                         }
 473
 474                 }
 475         }
 476         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 477                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 478                 /* for recovery situations */
 479                 qeth_init_qdio_out_buf(q, bidx);
 480                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 481         }
 482 }
 483
 484
 485 static void qeth_qdio_handle_aob(struct qeth_card *card,
 486                                  unsigned long phys_aob_addr)
 487 {
 488         struct qaob *aob;
 489         struct qeth_qdio_out_buffer *buffer;
 490         enum iucv_tx_notify notification;
 491         unsigned int i;
 492
 493         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 494         QETH_CARD_TEXT(card, 5, "haob");
 495         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 496         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 497         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 498
 499         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 500                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 501                 notification = TX_NOTIFY_OK;
 502         } else {
 503                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 504                                                         QETH_QDIO_BUF_PENDING);
 505                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 506                 notification = TX_NOTIFY_DELAYED_OK;
 507         }
 508
 509         if (aob->aorc != 0)  {
 510                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 511                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 512         }
 513         qeth_notify_skbs(buffer->q, buffer, notification);
 514
 515         /* Free dangling allocations. The attached skbs are handled by
 516          * qeth_cleanup_handled_pending().
 517          */
 518         for (i = 0;
 519              i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
 520              i++) {
 521                 if (aob->sba[i] && buffer->is_header[i])
 522                         kmem_cache_free(qeth_core_header_cache,
 523                                         (void *) aob->sba[i]);
 524         }
 525         atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
 526
 527         qdio_release_aob(aob);
 528 }
 529
 530 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 531 {
 532         return card->options.cq == QETH_CQ_ENABLED &&
 533             card->qdio.c_q != NULL &&
 534             queue != 0 &&
 535             queue == card->qdio.no_in_queues - 1;
 536 }
 537
 538 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data)
 539 {
 540         ccw->cmd_code = cmd_code;
 541         ccw->flags = CCW_FLAG_SLI;
 542         ccw->count = len;
 543         ccw->cda = (__u32) __pa(data);
 544 }
 545
 546 static int __qeth_issue_next_read(struct qeth_card *card)
 547 {
 548         struct qeth_channel *channel = &card->read;
 549         struct qeth_cmd_buffer *iob;
 550         int rc;
 551
 552         QETH_CARD_TEXT(card, 5, "issnxrd");
 553         if (channel->state != CH_STATE_UP)
 554                 return -EIO;
 555         iob = qeth_get_buffer(channel);
 556         if (!iob) {
 557                 dev_warn(&card->gdev->dev, "The qeth device driver "
 558                         "failed to recover an error on the device\n");
 559                 QETH_DBF_MESSAGE(2, "issue_next_read on device %x failed: no iob available\n",
 560                                  CARD_DEVID(card));
 561                 return -ENOMEM;
 562         }
 563         qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
 564         QETH_CARD_TEXT(card, 6, "noirqpnd");
 565         rc = ccw_device_start(channel->ccwdev, channel->ccw,
 566                               (addr_t) iob, 0, 0);
 567         if (rc) {
 568                 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
 569                                  rc, CARD_DEVID(card));
 570                 atomic_set(&channel->irq_pending, 0);
 571                 card->read_or_write_problem = 1;
 572                 qeth_schedule_recovery(card);
 573                 wake_up(&card->wait_q);
 574         }
 575         return rc;
 576 }
 577
 578 static int qeth_issue_next_read(struct qeth_card *card)
 579 {
 580         int ret;
 581
 582         spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 583         ret = __qeth_issue_next_read(card);
 584         spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 585
 586         return ret;
 587 }
 588
 589 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 590 {
 591         struct qeth_reply *reply;
 592
 593         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 594         if (reply) {
 595                 refcount_set(&reply->refcnt, 1);
 596                 atomic_set(&reply->received, 0);
 597         }
 598         return reply;
 599 }
 600
 601 static void qeth_get_reply(struct qeth_reply *reply)
 602 {
 603         refcount_inc(&reply->refcnt);
 604 }
 605
 606 static void qeth_put_reply(struct qeth_reply *reply)
 607 {
 608         if (refcount_dec_and_test(&reply->refcnt))
 609                 kfree(reply);
 610 }
 611
 612 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 613                 struct qeth_card *card)
 614 {
 615         const char *ipa_name;
 616         int com = cmd->hdr.command;
 617         ipa_name = qeth_get_ipa_cmd_name(com);
 618
 619         if (rc)
 620                 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
 621                                  ipa_name, com, CARD_DEVID(card), rc,
 622                                  qeth_get_ipa_msg(rc));
 623         else
 624                 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
 625                                  ipa_name, com, CARD_DEVID(card));
 626 }
 627
 628 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 629                                                 struct qeth_ipa_cmd *cmd)
 630 {
 631         QETH_CARD_TEXT(card, 5, "chkipad");
 632
 633         if (IS_IPA_REPLY(cmd)) {
 634                 if (cmd->hdr.command != IPA_CMD_SETCCID &&
 635                     cmd->hdr.command != IPA_CMD_DELCCID &&
 636                     cmd->hdr.command != IPA_CMD_MODCCID &&
 637                     cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 638                         qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
 639                 return cmd;
 640         }
 641
 642         /* handle unsolicited event: */
 643         switch (cmd->hdr.command) {
 644         case IPA_CMD_STOPLAN:
 645                 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
 646                         dev_err(&card->gdev->dev,
 647                                 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
 648                                 QETH_CARD_IFNAME(card));
 649                         qeth_close_dev(card);
 650                 } else {
 651                         dev_warn(&card->gdev->dev,
 652                                  "The link for interface %s on CHPID 0x%X failed\n",
 653                                  QETH_CARD_IFNAME(card), card->info.chpid);
 654                         qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
 655                         netif_carrier_off(card->dev);
 656                 }
 657                 return NULL;
 658         case IPA_CMD_STARTLAN:
 659                 dev_info(&card->gdev->dev,
 660                          "The link for %s on CHPID 0x%X has been restored\n",
 661                          QETH_CARD_IFNAME(card), card->info.chpid);
 662                 if (card->info.hwtrap)
 663                         card->info.hwtrap = 2;
 664                 qeth_schedule_recovery(card);
 665                 return NULL;
 666         case IPA_CMD_SETBRIDGEPORT_IQD:
 667         case IPA_CMD_SETBRIDGEPORT_OSA:
 668         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 669                 if (card->discipline->control_event_handler(card, cmd))
 670                         return cmd;
 671                 return NULL;
 672         case IPA_CMD_MODCCID:
 673                 return cmd;
 674         case IPA_CMD_REGISTER_LOCAL_ADDR:
 675                 QETH_CARD_TEXT(card, 3, "irla");
 676                 return NULL;
 677         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 678                 QETH_CARD_TEXT(card, 3, "urla");
 679                 return NULL;
 680         default:
 681                 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
 682                 return cmd;
 683         }
 684 }
 685
 686 void qeth_clear_ipacmd_list(struct qeth_card *card)
 687 {
 688         struct qeth_reply *reply, *r;
 689         unsigned long flags;
 690
 691         QETH_CARD_TEXT(card, 4, "clipalst");
 692
 693         spin_lock_irqsave(&card->lock, flags);
 694         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 695                 qeth_get_reply(reply);
 696                 reply->rc = -EIO;
 697                 atomic_inc(&reply->received);
 698                 list_del_init(&reply->list);
 699                 wake_up(&reply->wait_q);
 700                 qeth_put_reply(reply);
 701         }
 702         spin_unlock_irqrestore(&card->lock, flags);
 703 }
 704 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 705
 706 static int qeth_check_idx_response(struct qeth_card *card,
 707         unsigned char *buffer)
 708 {
 709         if (!buffer)
 710                 return 0;
 711
 712         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 713         if ((buffer[2] & 0xc0) == 0xc0) {
 714                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
 715                                  buffer[4]);
 716                 QETH_CARD_TEXT(card, 2, "ckidxres");
 717                 QETH_CARD_TEXT(card, 2, " idxterm");
 718                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 719                 if (buffer[4] == 0xf6) {
 720                         dev_err(&card->gdev->dev,
 721                         "The qeth device is not configured "
 722                         "for the OSI layer required by z/VM\n");
 723                         return -EPERM;
 724                 }
 725                 return -EIO;
 726         }
 727         return 0;
 728 }
 729
 730 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 731 {
 732         __u8 index;
 733
 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         spin_lock_irqsave(&channel->iob_lock, flags);
 755         iob->state = BUF_STATE_FREE;
 756         iob->callback = qeth_send_control_data_cb;
 757         iob->rc = 0;
 758         spin_unlock_irqrestore(&channel->iob_lock, flags);
 759         wake_up(&channel->wait_q);
 760 }
 761 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 762
 763 static void qeth_release_buffer_cb(struct qeth_card *card,
 764                                    struct qeth_channel *channel,
 765                                    struct qeth_cmd_buffer *iob)
 766 {
 767         qeth_release_buffer(channel, iob);
 768 }
 769
 770 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 771 {
 772         struct qeth_cmd_buffer *buffer = NULL;
 773         unsigned long flags;
 774
 775         spin_lock_irqsave(&channel->iob_lock, flags);
 776         buffer = __qeth_get_buffer(channel);
 777         spin_unlock_irqrestore(&channel->iob_lock, flags);
 778         return buffer;
 779 }
 780
 781 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 782 {
 783         struct qeth_cmd_buffer *buffer;
 784         wait_event(channel->wait_q,
 785                    ((buffer = qeth_get_buffer(channel)) != NULL));
 786         return buffer;
 787 }
 788 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 789
 790 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 791 {
 792         int cnt;
 793
 794         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 795                 qeth_release_buffer(channel, &channel->iob[cnt]);
 796         channel->io_buf_no = 0;
 797 }
 798 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 799
 800 static void qeth_send_control_data_cb(struct qeth_card *card,
 801                                       struct qeth_channel *channel,
 802                                       struct qeth_cmd_buffer *iob)
 803 {
 804         struct qeth_ipa_cmd *cmd = NULL;
 805         struct qeth_reply *reply, *r;
 806         unsigned long flags;
 807         int keep_reply;
 808         int rc = 0;
 809
 810         QETH_CARD_TEXT(card, 4, "sndctlcb");
 811         rc = qeth_check_idx_response(card, iob->data);
 812         switch (rc) {
 813         case 0:
 814                 break;
 815         case -EIO:
 816                 qeth_clear_ipacmd_list(card);
 817                 qeth_schedule_recovery(card);
 818                 /* fall through */
 819         default:
 820                 goto out;
 821         }
 822
 823         if (IS_IPA(iob->data)) {
 824                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 825                 cmd = qeth_check_ipa_data(card, cmd);
 826                 if (!cmd)
 827                         goto out;
 828                 if (IS_OSN(card) && card->osn_info.assist_cb &&
 829                     cmd->hdr.command != IPA_CMD_STARTLAN) {
 830                         card->osn_info.assist_cb(card->dev, cmd);
 831                         goto out;
 832                 }
 833         } else {
 834                 /* non-IPA commands should only flow during initialization */
 835                 if (card->state != CARD_STATE_DOWN)
 836                         goto out;
 837         }
 838
 839         spin_lock_irqsave(&card->lock, flags);
 840         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 841                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 842                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 843                         qeth_get_reply(reply);
 844                         list_del_init(&reply->list);
 845                         spin_unlock_irqrestore(&card->lock, flags);
 846                         keep_reply = 0;
 847                         if (reply->callback != NULL) {
 848                                 if (cmd) {
 849                                         reply->offset = (__u16)((char *)cmd -
 850                                                         (char *)iob->data);
 851                                         keep_reply = reply->callback(card,
 852                                                         reply,
 853                                                         (unsigned long)cmd);
 854                                 } else
 855                                         keep_reply = reply->callback(card,
 856                                                         reply,
 857                                                         (unsigned long)iob);
 858                         }
 859                         if (cmd)
 860                                 reply->rc = (u16) cmd->hdr.return_code;
 861                         else if (iob->rc)
 862                                 reply->rc = iob->rc;
 863                         if (keep_reply) {
 864                                 spin_lock_irqsave(&card->lock, flags);
 865                                 list_add_tail(&reply->list,
 866                                               &card->cmd_waiter_list);
 867                                 spin_unlock_irqrestore(&card->lock, flags);
 868                         } else {
 869                                 atomic_inc(&reply->received);
 870                                 wake_up(&reply->wait_q);
 871                         }
 872                         qeth_put_reply(reply);
 873                         goto out;
 874                 }
 875         }
 876         spin_unlock_irqrestore(&card->lock, flags);
 877 out:
 878         memcpy(&card->seqno.pdu_hdr_ack,
 879                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 880                 QETH_SEQ_NO_LENGTH);
 881         qeth_release_buffer(channel, iob);
 882 }
 883
 884 static int qeth_set_thread_start_bit(struct qeth_card *card,
 885                 unsigned long thread)
 886 {
 887         unsigned long flags;
 888
 889         spin_lock_irqsave(&card->thread_mask_lock, flags);
 890         if (!(card->thread_allowed_mask & thread) ||
 891               (card->thread_start_mask & thread)) {
 892                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 893                 return -EPERM;
 894         }
 895         card->thread_start_mask |= thread;
 896         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 897         return 0;
 898 }
 899
 900 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 901 {
 902         unsigned long flags;
 903
 904         spin_lock_irqsave(&card->thread_mask_lock, flags);
 905         card->thread_start_mask &= ~thread;
 906         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 907         wake_up(&card->wait_q);
 908 }
 909 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 910
 911 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 912 {
 913         unsigned long flags;
 914
 915         spin_lock_irqsave(&card->thread_mask_lock, flags);
 916         card->thread_running_mask &= ~thread;
 917         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 918         wake_up_all(&card->wait_q);
 919 }
 920 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 921
 922 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 923 {
 924         unsigned long flags;
 925         int rc = 0;
 926
 927         spin_lock_irqsave(&card->thread_mask_lock, flags);
 928         if (card->thread_start_mask & thread) {
 929                 if ((card->thread_allowed_mask & thread) &&
 930                     !(card->thread_running_mask & thread)) {
 931                         rc = 1;
 932                         card->thread_start_mask &= ~thread;
 933                         card->thread_running_mask |= thread;
 934                 } else
 935                         rc = -EPERM;
 936         }
 937         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 938         return rc;
 939 }
 940
 941 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 942 {
 943         int rc = 0;
 944
 945         wait_event(card->wait_q,
 946                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 947         return rc;
 948 }
 949 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 950
 951 void qeth_schedule_recovery(struct qeth_card *card)
 952 {
 953         QETH_CARD_TEXT(card, 2, "startrec");
 954         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 955                 schedule_work(&card->kernel_thread_starter);
 956 }
 957 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 958
 959 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
 960                             struct irb *irb)
 961 {
 962         int dstat, cstat;
 963         char *sense;
 964
 965         sense = (char *) irb->ecw;
 966         cstat = irb->scsw.cmd.cstat;
 967         dstat = irb->scsw.cmd.dstat;
 968
 969         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 970                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 971                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 972                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 973                 dev_warn(&cdev->dev, "The qeth device driver "
 974                         "failed to recover an error on the device\n");
 975                 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
 976                                  CCW_DEVID(cdev), dstat, cstat);
 977                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 978                                 16, 1, irb, 64, 1);
 979                 return 1;
 980         }
 981
 982         if (dstat & DEV_STAT_UNIT_CHECK) {
 983                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 984                     SENSE_RESETTING_EVENT_FLAG) {
 985                         QETH_CARD_TEXT(card, 2, "REVIND");
 986                         return 1;
 987                 }
 988                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 989                     SENSE_COMMAND_REJECT_FLAG) {
 990                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 991                         return 1;
 992                 }
 993                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 994                         QETH_CARD_TEXT(card, 2, "AFFE");
 995                         return 1;
 996                 }
 997                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 998                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 999                         return 0;
1000                 }
1001                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1002                         return 1;
1003         }
1004         return 0;
1005 }
1006
1007 static long qeth_check_irb_error(struct qeth_card *card,
1008                                  struct ccw_device *cdev, unsigned long intparm,
1009                                  struct irb *irb)
1010 {
1011         if (!IS_ERR(irb))
1012                 return 0;
1013
1014         switch (PTR_ERR(irb)) {
1015         case -EIO:
1016                 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1017                                  CCW_DEVID(cdev));
1018                 QETH_CARD_TEXT(card, 2, "ckirberr");
1019                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1020                 break;
1021         case -ETIMEDOUT:
1022                 dev_warn(&cdev->dev, "A hardware operation timed out"
1023                         " on the device\n");
1024                 QETH_CARD_TEXT(card, 2, "ckirberr");
1025                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1026                 if (intparm == QETH_RCD_PARM) {
1027                         if (card->data.ccwdev == cdev) {
1028                                 card->data.state = CH_STATE_DOWN;
1029                                 wake_up(&card->wait_q);
1030                         }
1031                 }
1032                 break;
1033         default:
1034                 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1035                                  PTR_ERR(irb), CCW_DEVID(cdev));
1036                 QETH_CARD_TEXT(card, 2, "ckirberr");
1037                 QETH_CARD_TEXT(card, 2, "  rc???");
1038         }
1039         return PTR_ERR(irb);
1040 }
1041
1042 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1043                 struct irb *irb)
1044 {
1045         int rc;
1046         int cstat, dstat;
1047         struct qeth_cmd_buffer *iob = NULL;
1048         struct ccwgroup_device *gdev;
1049         struct qeth_channel *channel;
1050         struct qeth_card *card;
1051
1052         /* while we hold the ccwdev lock, this stays valid: */
1053         gdev = dev_get_drvdata(&cdev->dev);
1054         card = dev_get_drvdata(&gdev->dev);
1055         if (!card)
1056                 return;
1057
1058         QETH_CARD_TEXT(card, 5, "irq");
1059
1060         if (card->read.ccwdev == cdev) {
1061                 channel = &card->read;
1062                 QETH_CARD_TEXT(card, 5, "read");
1063         } else if (card->write.ccwdev == cdev) {
1064                 channel = &card->write;
1065                 QETH_CARD_TEXT(card, 5, "write");
1066         } else {
1067                 channel = &card->data;
1068                 QETH_CARD_TEXT(card, 5, "data");
1069         }
1070
1071         if (qeth_intparm_is_iob(intparm))
1072                 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1073
1074         if (qeth_check_irb_error(card, cdev, intparm, irb)) {
1075                 /* IO was terminated, free its resources. */
1076                 if (iob)
1077                         qeth_release_buffer(iob->channel, iob);
1078                 atomic_set(&channel->irq_pending, 0);
1079                 wake_up(&card->wait_q);
1080                 return;
1081         }
1082
1083         atomic_set(&channel->irq_pending, 0);
1084
1085         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1086                 channel->state = CH_STATE_STOPPED;
1087
1088         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1089                 channel->state = CH_STATE_HALTED;
1090
1091         /*let's wake up immediately on data channel*/
1092         if ((channel == &card->data) && (intparm != 0) &&
1093             (intparm != QETH_RCD_PARM))
1094                 goto out;
1095
1096         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1097                 QETH_CARD_TEXT(card, 6, "clrchpar");
1098                 /* we don't have to handle this further */
1099                 intparm = 0;
1100         }
1101         if (intparm == QETH_HALT_CHANNEL_PARM) {
1102                 QETH_CARD_TEXT(card, 6, "hltchpar");
1103                 /* we don't have to handle this further */
1104                 intparm = 0;
1105         }
1106
1107         cstat = irb->scsw.cmd.cstat;
1108         dstat = irb->scsw.cmd.dstat;
1109
1110         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1111             (dstat & DEV_STAT_UNIT_CHECK) ||
1112             (cstat)) {
1113                 if (irb->esw.esw0.erw.cons) {
1114                         dev_warn(&channel->ccwdev->dev,
1115                                 "The qeth device driver failed to recover "
1116                                 "an error on the device\n");
1117                         QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1118                                          CCW_DEVID(channel->ccwdev), cstat,
1119                                          dstat);
1120                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1121                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1122                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1123                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1124                 }
1125                 if (intparm == QETH_RCD_PARM) {
1126                         channel->state = CH_STATE_DOWN;
1127                         goto out;
1128                 }
1129                 rc = qeth_get_problem(card, cdev, irb);
1130                 if (rc) {
1131                         card->read_or_write_problem = 1;
1132                         qeth_clear_ipacmd_list(card);
1133                         qeth_schedule_recovery(card);
1134                         goto out;
1135                 }
1136         }
1137
1138         if (intparm == QETH_RCD_PARM) {
1139                 channel->state = CH_STATE_RCD_DONE;
1140                 goto out;
1141         }
1142         if (channel == &card->data)
1143                 return;
1144         if (channel == &card->read &&
1145             channel->state == CH_STATE_UP)
1146                 __qeth_issue_next_read(card);
1147
1148         if (iob && iob->callback)
1149                 iob->callback(card, iob->channel, iob);
1150
1151 out:
1152         wake_up(&card->wait_q);
1153         return;
1154 }
1155
1156 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1157                 struct qeth_qdio_out_buffer *buf,
1158                 enum iucv_tx_notify notification)
1159 {
1160         struct sk_buff *skb;
1161
1162         skb_queue_walk(&buf->skb_list, skb) {
1163                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1164                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1165                 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1166                         iucv_sk(skb->sk)->sk_txnotify(skb, notification);
1167         }
1168 }
1169
1170 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1171 {
1172         /* release may never happen from within CQ tasklet scope */
1173         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1174
1175         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1176                 qeth_notify_skbs(buf->q, buf, TX_NOTIFY_GENERALERROR);
1177
1178         __skb_queue_purge(&buf->skb_list);
1179 }
1180
1181 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1182                                      struct qeth_qdio_out_buffer *buf)
1183 {
1184         int i;
1185
1186         /* is PCI flag set on buffer? */
1187         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1188                 atomic_dec(&queue->set_pci_flags_count);
1189
1190         qeth_release_skbs(buf);
1191
1192         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1193                 if (buf->buffer->element[i].addr && buf->is_header[i])
1194                         kmem_cache_free(qeth_core_header_cache,
1195                                 buf->buffer->element[i].addr);
1196                 buf->is_header[i] = 0;
1197         }
1198
1199         qeth_scrub_qdio_buffer(buf->buffer,
1200                                QETH_MAX_BUFFER_ELEMENTS(queue->card));
1201         buf->next_element_to_fill = 0;
1202         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1203 }
1204
1205 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1206 {
1207         int j;
1208
1209         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1210                 if (!q->bufs[j])
1211                         continue;
1212                 qeth_cleanup_handled_pending(q, j, 1);
1213                 qeth_clear_output_buffer(q, q->bufs[j]);
1214                 if (free) {
1215                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1216                         q->bufs[j] = NULL;
1217                 }
1218         }
1219 }
1220
1221 void qeth_clear_qdio_buffers(struct qeth_card *card)
1222 {
1223         int i;
1224
1225         QETH_CARD_TEXT(card, 2, "clearqdbf");
1226         /* clear outbound buffers to free skbs */
1227         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1228                 if (card->qdio.out_qs[i]) {
1229                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1230                 }
1231         }
1232 }
1233 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1234
1235 static void qeth_free_buffer_pool(struct qeth_card *card)
1236 {
1237         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1238         int i = 0;
1239         list_for_each_entry_safe(pool_entry, tmp,
1240                                  &card->qdio.init_pool.entry_list, init_list){
1241                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1242                         free_page((unsigned long)pool_entry->elements[i]);
1243                 list_del(&pool_entry->init_list);
1244                 kfree(pool_entry);
1245         }
1246 }
1247
1248 static void qeth_clean_channel(struct qeth_channel *channel)
1249 {
1250         struct ccw_device *cdev = channel->ccwdev;
1251         int cnt;
1252
1253         QETH_DBF_TEXT(SETUP, 2, "freech");
1254
1255         spin_lock_irq(get_ccwdev_lock(cdev));
1256         cdev->handler = NULL;
1257         spin_unlock_irq(get_ccwdev_lock(cdev));
1258
1259         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1260                 kfree(channel->iob[cnt].data);
1261         kfree(channel->ccw);
1262 }
1263
1264 static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers)
1265 {
1266         struct ccw_device *cdev = channel->ccwdev;
1267         int cnt;
1268
1269         QETH_DBF_TEXT(SETUP, 2, "setupch");
1270
1271         channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
1272         if (!channel->ccw)
1273                 return -ENOMEM;
1274         channel->state = CH_STATE_DOWN;
1275         atomic_set(&channel->irq_pending, 0);
1276         init_waitqueue_head(&channel->wait_q);
1277
1278         spin_lock_irq(get_ccwdev_lock(cdev));
1279         cdev->handler = qeth_irq;
1280         spin_unlock_irq(get_ccwdev_lock(cdev));
1281
1282         if (!alloc_buffers)
1283                 return 0;
1284
1285         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
1286                 channel->iob[cnt].data = kmalloc(QETH_BUFSIZE,
1287                                                  GFP_KERNEL | GFP_DMA);
1288                 if (channel->iob[cnt].data == NULL)
1289                         break;
1290                 channel->iob[cnt].state = BUF_STATE_FREE;
1291                 channel->iob[cnt].channel = channel;
1292                 channel->iob[cnt].callback = qeth_send_control_data_cb;
1293                 channel->iob[cnt].rc = 0;
1294         }
1295         if (cnt < QETH_CMD_BUFFER_NO) {
1296                 qeth_clean_channel(channel);
1297                 return -ENOMEM;
1298         }
1299         channel->io_buf_no = 0;
1300         spin_lock_init(&channel->iob_lock);
1301
1302         return 0;
1303 }
1304
1305 static void qeth_set_single_write_queues(struct qeth_card *card)
1306 {
1307         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1308             (card->qdio.no_out_queues == 4))
1309                 qeth_free_qdio_buffers(card);
1310
1311         card->qdio.no_out_queues = 1;
1312         if (card->qdio.default_out_queue != 0)
1313                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1314
1315         card->qdio.default_out_queue = 0;
1316 }
1317
1318 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1319 {
1320         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1321             (card->qdio.no_out_queues == 1)) {
1322                 qeth_free_qdio_buffers(card);
1323                 card->qdio.default_out_queue = 2;
1324         }
1325         card->qdio.no_out_queues = 4;
1326 }
1327
1328 static void qeth_update_from_chp_desc(struct qeth_card *card)
1329 {
1330         struct ccw_device *ccwdev;
1331         struct channel_path_desc_fmt0 *chp_dsc;
1332
1333         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1334
1335         ccwdev = card->data.ccwdev;
1336         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1337         if (!chp_dsc)
1338                 goto out;
1339
1340         card->info.func_level = 0x4100 + chp_dsc->desc;
1341         if (card->info.type == QETH_CARD_TYPE_IQD)
1342                 goto out;
1343
1344         /* CHPP field bit 6 == 1 -> single queue */
1345         if ((chp_dsc->chpp & 0x02) == 0x02)
1346                 qeth_set_single_write_queues(card);
1347         else
1348                 qeth_set_multiple_write_queues(card);
1349 out:
1350         kfree(chp_dsc);
1351         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1352         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1353 }
1354
1355 static void qeth_init_qdio_info(struct qeth_card *card)
1356 {
1357         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1358         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1359         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1360         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1361         card->qdio.no_out_queues = QETH_MAX_QUEUES;
1362
1363         /* inbound */
1364         card->qdio.no_in_queues = 1;
1365         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1366         if (card->info.type == QETH_CARD_TYPE_IQD)
1367                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1368         else
1369                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1370         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1371         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1372         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1373 }
1374
1375 static void qeth_set_initial_options(struct qeth_card *card)
1376 {
1377         card->options.route4.type = NO_ROUTER;
1378         card->options.route6.type = NO_ROUTER;
1379         card->options.rx_sg_cb = QETH_RX_SG_CB;
1380         card->options.isolation = ISOLATION_MODE_NONE;
1381         card->options.cq = QETH_CQ_DISABLED;
1382         card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1383 }
1384
1385 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1386 {
1387         unsigned long flags;
1388         int rc = 0;
1389
1390         spin_lock_irqsave(&card->thread_mask_lock, flags);
1391         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1392                         (u8) card->thread_start_mask,
1393                         (u8) card->thread_allowed_mask,
1394                         (u8) card->thread_running_mask);
1395         rc = (card->thread_start_mask & thread);
1396         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1397         return rc;
1398 }
1399
1400 static void qeth_start_kernel_thread(struct work_struct *work)
1401 {
1402         struct task_struct *ts;
1403         struct qeth_card *card = container_of(work, struct qeth_card,
1404                                         kernel_thread_starter);
1405         QETH_CARD_TEXT(card , 2, "strthrd");
1406
1407         if (card->read.state != CH_STATE_UP &&
1408             card->write.state != CH_STATE_UP)
1409                 return;
1410         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1411                 ts = kthread_run(card->discipline->recover, (void *)card,
1412                                 "qeth_recover");
1413                 if (IS_ERR(ts)) {
1414                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1415                         qeth_clear_thread_running_bit(card,
1416                                 QETH_RECOVER_THREAD);
1417                 }
1418         }
1419 }
1420
1421 static void qeth_buffer_reclaim_work(struct work_struct *);
1422 static void qeth_setup_card(struct qeth_card *card)
1423 {
1424         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1425         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1426
1427         card->info.type = CARD_RDEV(card)->id.driver_info;
1428         card->state = CARD_STATE_DOWN;
1429         spin_lock_init(&card->mclock);
1430         spin_lock_init(&card->lock);
1431         spin_lock_init(&card->ip_lock);
1432         spin_lock_init(&card->thread_mask_lock);
1433         mutex_init(&card->conf_mutex);
1434         mutex_init(&card->discipline_mutex);
1435         mutex_init(&card->vid_list_mutex);
1436         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1437         INIT_LIST_HEAD(&card->cmd_waiter_list);
1438         init_waitqueue_head(&card->wait_q);
1439         qeth_set_initial_options(card);
1440         /* IP address takeover */
1441         INIT_LIST_HEAD(&card->ipato.entries);
1442         qeth_init_qdio_info(card);
1443         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1444         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1445 }
1446
1447 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1448 {
1449         struct qeth_card *card = container_of(slr, struct qeth_card,
1450                                         qeth_service_level);
1451         if (card->info.mcl_level[0])
1452                 seq_printf(m, "qeth: %s firmware level %s\n",
1453                         CARD_BUS_ID(card), card->info.mcl_level);
1454 }
1455
1456 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1457 {
1458         struct qeth_card *card;
1459
1460         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1461         card = kzalloc(sizeof(*card), GFP_KERNEL);
1462         if (!card)
1463                 goto out;
1464         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1465
1466         card->gdev = gdev;
1467         dev_set_drvdata(&gdev->dev, card);
1468         CARD_RDEV(card) = gdev->cdev[0];
1469         CARD_WDEV(card) = gdev->cdev[1];
1470         CARD_DDEV(card) = gdev->cdev[2];
1471         if (qeth_setup_channel(&card->read, true))
1472                 goto out_ip;
1473         if (qeth_setup_channel(&card->write, true))
1474                 goto out_channel;
1475         if (qeth_setup_channel(&card->data, false))
1476                 goto out_data;
1477         card->qeth_service_level.seq_print = qeth_core_sl_print;
1478         register_service_level(&card->qeth_service_level);
1479         return card;
1480
1481 out_data:
1482         qeth_clean_channel(&card->write);
1483 out_channel:
1484         qeth_clean_channel(&card->read);
1485 out_ip:
1486         dev_set_drvdata(&gdev->dev, NULL);
1487         kfree(card);
1488 out:
1489         return NULL;
1490 }
1491
1492 static int qeth_clear_channel(struct qeth_card *card,
1493                               struct qeth_channel *channel)
1494 {
1495         int rc;
1496
1497         QETH_CARD_TEXT(card, 3, "clearch");
1498         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1499         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1500         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1501
1502         if (rc)
1503                 return rc;
1504         rc = wait_event_interruptible_timeout(card->wait_q,
1505                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1506         if (rc == -ERESTARTSYS)
1507                 return rc;
1508         if (channel->state != CH_STATE_STOPPED)
1509                 return -ETIME;
1510         channel->state = CH_STATE_DOWN;
1511         return 0;
1512 }
1513
1514 static int qeth_halt_channel(struct qeth_card *card,
1515                              struct qeth_channel *channel)
1516 {
1517         int rc;
1518
1519         QETH_CARD_TEXT(card, 3, "haltch");
1520         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1521         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1522         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1523
1524         if (rc)
1525                 return rc;
1526         rc = wait_event_interruptible_timeout(card->wait_q,
1527                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1528         if (rc == -ERESTARTSYS)
1529                 return rc;
1530         if (channel->state != CH_STATE_HALTED)
1531                 return -ETIME;
1532         return 0;
1533 }
1534
1535 static int qeth_halt_channels(struct qeth_card *card)
1536 {
1537         int rc1 = 0, rc2 = 0, rc3 = 0;
1538
1539         QETH_CARD_TEXT(card, 3, "haltchs");
1540         rc1 = qeth_halt_channel(card, &card->read);
1541         rc2 = qeth_halt_channel(card, &card->write);
1542         rc3 = qeth_halt_channel(card, &card->data);
1543         if (rc1)
1544                 return rc1;
1545         if (rc2)
1546                 return rc2;
1547         return rc3;
1548 }
1549
1550 static int qeth_clear_channels(struct qeth_card *card)
1551 {
1552         int rc1 = 0, rc2 = 0, rc3 = 0;
1553
1554         QETH_CARD_TEXT(card, 3, "clearchs");
1555         rc1 = qeth_clear_channel(card, &card->read);
1556         rc2 = qeth_clear_channel(card, &card->write);
1557         rc3 = qeth_clear_channel(card, &card->data);
1558         if (rc1)
1559                 return rc1;
1560         if (rc2)
1561                 return rc2;
1562         return rc3;
1563 }
1564
1565 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1566 {
1567         int rc = 0;
1568
1569         QETH_CARD_TEXT(card, 3, "clhacrd");
1570
1571         if (halt)
1572                 rc = qeth_halt_channels(card);
1573         if (rc)
1574                 return rc;
1575         return qeth_clear_channels(card);
1576 }
1577
1578 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1579 {
1580         int rc = 0;
1581
1582         QETH_CARD_TEXT(card, 3, "qdioclr");
1583         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1584                 QETH_QDIO_CLEANING)) {
1585         case QETH_QDIO_ESTABLISHED:
1586                 if (card->info.type == QETH_CARD_TYPE_IQD)
1587                         rc = qdio_shutdown(CARD_DDEV(card),
1588                                 QDIO_FLAG_CLEANUP_USING_HALT);
1589                 else
1590                         rc = qdio_shutdown(CARD_DDEV(card),
1591                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1592                 if (rc)
1593                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1594                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1595                 break;
1596         case QETH_QDIO_CLEANING:
1597                 return rc;
1598         default:
1599                 break;
1600         }
1601         rc = qeth_clear_halt_card(card, use_halt);
1602         if (rc)
1603                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1604         card->state = CARD_STATE_DOWN;
1605         return rc;
1606 }
1607 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1608
1609 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1610                                int *length)
1611 {
1612         struct ciw *ciw;
1613         char *rcd_buf;
1614         int ret;
1615         struct qeth_channel *channel = &card->data;
1616
1617         /*
1618          * scan for RCD command in extended SenseID data
1619          */
1620         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1621         if (!ciw || ciw->cmd == 0)
1622                 return -EOPNOTSUPP;
1623         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1624         if (!rcd_buf)
1625                 return -ENOMEM;
1626
1627         qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf);
1628         channel->state = CH_STATE_RCD;
1629         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1630         ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1631                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1632                                        QETH_RCD_TIMEOUT);
1633         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1634         if (!ret)
1635                 wait_event(card->wait_q,
1636                            (channel->state == CH_STATE_RCD_DONE ||
1637                             channel->state == CH_STATE_DOWN));
1638         if (channel->state == CH_STATE_DOWN)
1639                 ret = -EIO;
1640         else
1641                 channel->state = CH_STATE_DOWN;
1642         if (ret) {
1643                 kfree(rcd_buf);
1644                 *buffer = NULL;
1645                 *length = 0;
1646         } else {
1647                 *length = ciw->count;
1648                 *buffer = rcd_buf;
1649         }
1650         return ret;
1651 }
1652
1653 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1654 {
1655         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1656         card->info.chpid = prcd[30];
1657         card->info.unit_addr2 = prcd[31];
1658         card->info.cula = prcd[63];
1659         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1660                                (prcd[0x11] == _ascebc['M']));
1661 }
1662
1663 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1664 {
1665         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1666         struct diag26c_vnic_resp *response = NULL;
1667         struct diag26c_vnic_req *request = NULL;
1668         struct ccw_dev_id id;
1669         char userid[80];
1670         int rc = 0;
1671
1672         QETH_DBF_TEXT(SETUP, 2, "vmlayer");
1673
1674         cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1675         if (rc)
1676                 goto out;
1677
1678         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1679         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1680         if (!request || !response) {
1681                 rc = -ENOMEM;
1682                 goto out;
1683         }
1684
1685         ccw_device_get_id(CARD_RDEV(card), &id);
1686         request->resp_buf_len = sizeof(*response);
1687         request->resp_version = DIAG26C_VERSION6_VM65918;
1688         request->req_format = DIAG26C_VNIC_INFO;
1689         ASCEBC(userid, 8);
1690         memcpy(&request->sys_name, userid, 8);
1691         request->devno = id.devno;
1692
1693         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1694         rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1695         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1696         if (rc)
1697                 goto out;
1698         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1699
1700         if (request->resp_buf_len < sizeof(*response) ||
1701             response->version != request->resp_version) {
1702                 rc = -EIO;
1703                 goto out;
1704         }
1705
1706         if (response->protocol == VNIC_INFO_PROT_L2)
1707                 disc = QETH_DISCIPLINE_LAYER2;
1708         else if (response->protocol == VNIC_INFO_PROT_L3)
1709                 disc = QETH_DISCIPLINE_LAYER3;
1710
1711 out:
1712         kfree(response);
1713         kfree(request);
1714         if (rc)
1715                 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc);
1716         return disc;
1717 }
1718
1719 /* Determine whether the device requires a specific layer discipline */
1720 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1721 {
1722         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1723
1724         if (card->info.type == QETH_CARD_TYPE_OSM ||
1725             card->info.type == QETH_CARD_TYPE_OSN)
1726                 disc = QETH_DISCIPLINE_LAYER2;
1727         else if (card->info.guestlan)
1728                 disc = (card->info.type == QETH_CARD_TYPE_IQD) ?
1729                                 QETH_DISCIPLINE_LAYER3 :
1730                                 qeth_vm_detect_layer(card);
1731
1732         switch (disc) {
1733         case QETH_DISCIPLINE_LAYER2:
1734                 QETH_DBF_TEXT(SETUP, 3, "force l2");
1735                 break;
1736         case QETH_DISCIPLINE_LAYER3:
1737                 QETH_DBF_TEXT(SETUP, 3, "force l3");
1738                 break;
1739         default:
1740                 QETH_DBF_TEXT(SETUP, 3, "force no");
1741         }
1742
1743         return disc;
1744 }
1745
1746 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1747 {
1748         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1749
1750         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1751             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1752                 card->info.blkt.time_total = 0;
1753                 card->info.blkt.inter_packet = 0;
1754                 card->info.blkt.inter_packet_jumbo = 0;
1755         } else {
1756                 card->info.blkt.time_total = 250;
1757                 card->info.blkt.inter_packet = 5;
1758                 card->info.blkt.inter_packet_jumbo = 15;
1759         }
1760 }
1761
1762 static void qeth_init_tokens(struct qeth_card *card)
1763 {
1764         card->token.issuer_rm_w = 0x00010103UL;
1765         card->token.cm_filter_w = 0x00010108UL;
1766         card->token.cm_connection_w = 0x0001010aUL;
1767         card->token.ulp_filter_w = 0x0001010bUL;
1768         card->token.ulp_connection_w = 0x0001010dUL;
1769 }
1770
1771 static void qeth_init_func_level(struct qeth_card *card)
1772 {
1773         switch (card->info.type) {
1774         case QETH_CARD_TYPE_IQD:
1775                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1776                 break;
1777         case QETH_CARD_TYPE_OSD:
1778         case QETH_CARD_TYPE_OSN:
1779                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1780                 break;
1781         default:
1782                 break;
1783         }
1784 }
1785
1786 static int qeth_idx_activate_get_answer(struct qeth_card *card,
1787                                         struct qeth_channel *channel,
1788                                         void (*reply_cb)(struct qeth_card *,
1789                                                          struct qeth_channel *,
1790                                                          struct qeth_cmd_buffer *))
1791 {
1792         struct qeth_cmd_buffer *iob;
1793         int rc;
1794
1795         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1796         iob = qeth_get_buffer(channel);
1797         if (!iob)
1798                 return -ENOMEM;
1799         iob->callback = reply_cb;
1800         qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
1801
1802         wait_event(card->wait_q,
1803                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1804         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1805         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1806         rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1807                                       (addr_t) iob, 0, 0, QETH_TIMEOUT);
1808         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1809
1810         if (rc) {
1811                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1812                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1813                 atomic_set(&channel->irq_pending, 0);
1814                 wake_up(&card->wait_q);
1815                 return rc;
1816         }
1817         rc = wait_event_interruptible_timeout(card->wait_q,
1818                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1819         if (rc == -ERESTARTSYS)
1820                 return rc;
1821         if (channel->state != CH_STATE_UP) {
1822                 rc = -ETIME;
1823                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1824         } else
1825                 rc = 0;
1826         return rc;
1827 }
1828
1829 static int qeth_idx_activate_channel(struct qeth_card *card,
1830                                      struct qeth_channel *channel,
1831                                      void (*reply_cb)(struct qeth_card *,
1832                                                       struct qeth_channel *,
1833                                                       struct qeth_cmd_buffer *))
1834 {
1835         struct qeth_cmd_buffer *iob;
1836         __u16 temp;
1837         __u8 tmp;
1838         int rc;
1839         struct ccw_dev_id temp_devid;
1840
1841         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1842
1843         iob = qeth_get_buffer(channel);
1844         if (!iob)
1845                 return -ENOMEM;
1846         iob->callback = reply_cb;
1847         qeth_setup_ccw(channel->ccw, CCW_CMD_WRITE, IDX_ACTIVATE_SIZE,
1848                        iob->data);
1849         if (channel == &card->write) {
1850                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1851                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1852                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1853                 card->seqno.trans_hdr++;
1854         } else {
1855                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1856                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1857                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1858         }
1859         tmp = ((u8)card->dev->dev_port) | 0x80;
1860         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1861         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1862                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1863         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1864                &card->info.func_level, sizeof(__u16));
1865         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1866         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1867         temp = (card->info.cula << 8) + card->info.unit_addr2;
1868         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1869
1870         wait_event(card->wait_q,
1871                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1872         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1873         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1874         rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1875                                       (addr_t) iob, 0, 0, QETH_TIMEOUT);
1876         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1877
1878         if (rc) {
1879                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1880                         rc);
1881                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1882                 atomic_set(&channel->irq_pending, 0);
1883                 wake_up(&card->wait_q);
1884                 return rc;
1885         }
1886         rc = wait_event_interruptible_timeout(card->wait_q,
1887                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1888         if (rc == -ERESTARTSYS)
1889                 return rc;
1890         if (channel->state != CH_STATE_ACTIVATING) {
1891                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1892                         " failed to recover an error on the device\n");
1893                 QETH_DBF_MESSAGE(2, "IDX activate timed out on channel %x\n",
1894                                  CCW_DEVID(channel->ccwdev));
1895                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1896                 return -ETIME;
1897         }
1898         return qeth_idx_activate_get_answer(card, channel, reply_cb);
1899 }
1900
1901 static int qeth_peer_func_level(int level)
1902 {
1903         if ((level & 0xff) == 8)
1904                 return (level & 0xff) + 0x400;
1905         if (((level >> 8) & 3) == 1)
1906                 return (level & 0xff) + 0x200;
1907         return level;
1908 }
1909
1910 static void qeth_idx_write_cb(struct qeth_card *card,
1911                               struct qeth_channel *channel,
1912                               struct qeth_cmd_buffer *iob)
1913 {
1914         __u16 temp;
1915
1916         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1917
1918         if (channel->state == CH_STATE_DOWN) {
1919                 channel->state = CH_STATE_ACTIVATING;
1920                 goto out;
1921         }
1922
1923         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1924                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1925                         dev_err(&channel->ccwdev->dev,
1926                                 "The adapter is used exclusively by another "
1927                                 "host\n");
1928                 else
1929                         QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1930                                          CCW_DEVID(channel->ccwdev));
1931                 goto out;
1932         }
1933         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1934         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1935                 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1936                                  CCW_DEVID(channel->ccwdev),
1937                                  card->info.func_level, temp);
1938                 goto out;
1939         }
1940         channel->state = CH_STATE_UP;
1941 out:
1942         qeth_release_buffer(channel, iob);
1943 }
1944
1945 static void qeth_idx_read_cb(struct qeth_card *card,
1946                              struct qeth_channel *channel,
1947                              struct qeth_cmd_buffer *iob)
1948 {
1949         __u16 temp;
1950
1951         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1952         if (channel->state == CH_STATE_DOWN) {
1953                 channel->state = CH_STATE_ACTIVATING;
1954                 goto out;
1955         }
1956
1957         if (qeth_check_idx_response(card, iob->data))
1958                         goto out;
1959
1960         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1961                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1962                 case QETH_IDX_ACT_ERR_EXCL:
1963                         dev_err(&channel->ccwdev->dev,
1964                                 "The adapter is used exclusively by another "
1965                                 "host\n");
1966                         break;
1967                 case QETH_IDX_ACT_ERR_AUTH:
1968                 case QETH_IDX_ACT_ERR_AUTH_USER:
1969                         dev_err(&channel->ccwdev->dev,
1970                                 "Setting the device online failed because of "
1971                                 "insufficient authorization\n");
1972                         break;
1973                 default:
1974                         QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1975                                          CCW_DEVID(channel->ccwdev));
1976                 }
1977                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1978                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1979                 goto out;
1980         }
1981
1982         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1983         if (temp != qeth_peer_func_level(card->info.func_level)) {
1984                 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1985                                  CCW_DEVID(channel->ccwdev),
1986                                  card->info.func_level, temp);
1987                 goto out;
1988         }
1989         memcpy(&card->token.issuer_rm_r,
1990                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1991                QETH_MPC_TOKEN_LENGTH);
1992         memcpy(&card->info.mcl_level[0],
1993                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1994         channel->state = CH_STATE_UP;
1995 out:
1996         qeth_release_buffer(channel, iob);
1997 }
1998
1999 void qeth_prepare_control_data(struct qeth_card *card, int len,
2000                 struct qeth_cmd_buffer *iob)
2001 {
2002         qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data);
2003         iob->callback = qeth_release_buffer_cb;
2004
2005         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2006                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2007         card->seqno.trans_hdr++;
2008         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2009                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2010         card->seqno.pdu_hdr++;
2011         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2012                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2013         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2014 }
2015 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2016
2017 /**
2018  * qeth_send_control_data() -   send control command to the card
2019  * @card:                       qeth_card structure pointer
2020  * @len:                        size of the command buffer
2021  * @iob:                        qeth_cmd_buffer pointer
2022  * @reply_cb:                   callback function pointer
2023  * @cb_card:                    pointer to the qeth_card structure
2024  * @cb_reply:                   pointer to the qeth_reply structure
2025  * @cb_cmd:                     pointer to the original iob for non-IPA
2026  *                              commands, or to the qeth_ipa_cmd structure
2027  *                              for the IPA commands.
2028  * @reply_param:                private pointer passed to the callback
2029  *
2030  * Returns the value of the `return_code' field of the response
2031  * block returned from the hardware, or other error indication.
2032  * Value of zero indicates successful execution of the command.
2033  *
2034  * Callback function gets called one or more times, with cb_cmd
2035  * pointing to the response returned by the hardware. Callback
2036  * function must return non-zero if more reply blocks are expected,
2037  * and zero if the last or only reply block is received. Callback
2038  * function can get the value of the reply_param pointer from the
2039  * field 'param' of the structure qeth_reply.
2040  */
2041
2042 int qeth_send_control_data(struct qeth_card *card, int len,
2043                 struct qeth_cmd_buffer *iob,
2044                 int (*reply_cb)(struct qeth_card *cb_card,
2045                                 struct qeth_reply *cb_reply,
2046                                 unsigned long cb_cmd),
2047                 void *reply_param)
2048 {
2049         struct qeth_channel *channel = iob->channel;
2050         int rc;
2051         struct qeth_reply *reply = NULL;
2052         unsigned long timeout, event_timeout;
2053         struct qeth_ipa_cmd *cmd = NULL;
2054
2055         QETH_CARD_TEXT(card, 2, "sendctl");
2056
2057         if (card->read_or_write_problem) {
2058                 qeth_release_buffer(channel, iob);
2059                 return -EIO;
2060         }
2061         reply = qeth_alloc_reply(card);
2062         if (!reply) {
2063                 return -ENOMEM;
2064         }
2065         reply->callback = reply_cb;
2066         reply->param = reply_param;
2067
2068         init_waitqueue_head(&reply->wait_q);
2069
2070         while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ;
2071
2072         if (IS_IPA(iob->data)) {
2073                 cmd = __ipa_cmd(iob);
2074                 cmd->hdr.seqno = card->seqno.ipa++;
2075                 reply->seqno = cmd->hdr.seqno;
2076                 event_timeout = QETH_IPA_TIMEOUT;
2077         } else {
2078                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2079                 event_timeout = QETH_TIMEOUT;
2080         }
2081         qeth_prepare_control_data(card, len, iob);
2082
2083         spin_lock_irq(&card->lock);
2084         list_add_tail(&reply->list, &card->cmd_waiter_list);
2085         spin_unlock_irq(&card->lock);
2086
2087         timeout = jiffies + event_timeout;
2088
2089         QETH_CARD_TEXT(card, 6, "noirqpnd");
2090         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
2091         rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
2092                                       (addr_t) iob, 0, 0, event_timeout);
2093         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
2094         if (rc) {
2095                 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2096                                  CARD_DEVID(card), rc);
2097                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2098                 spin_lock_irq(&card->lock);
2099                 list_del_init(&reply->list);
2100                 qeth_put_reply(reply);
2101                 spin_unlock_irq(&card->lock);
2102                 qeth_release_buffer(channel, iob);
2103                 atomic_set(&channel->irq_pending, 0);
2104                 wake_up(&card->wait_q);
2105                 return rc;
2106         }
2107
2108         /* we have only one long running ipassist, since we can ensure
2109            process context of this command we can sleep */
2110         if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2111             cmd->hdr.prot_version == QETH_PROT_IPV4) {
2112                 if (!wait_event_timeout(reply->wait_q,
2113                     atomic_read(&reply->received), event_timeout))
2114                         goto time_err;
2115         } else {
2116                 while (!atomic_read(&reply->received)) {
2117                         if (time_after(jiffies, timeout))
2118                                 goto time_err;
2119                         cpu_relax();
2120                 }
2121         }
2122
2123         rc = reply->rc;
2124         qeth_put_reply(reply);
2125         return rc;
2126
2127 time_err:
2128         reply->rc = -ETIME;
2129         spin_lock_irq(&card->lock);
2130         list_del_init(&reply->list);
2131         spin_unlock_irq(&card->lock);
2132         atomic_inc(&reply->received);
2133         rc = reply->rc;
2134         qeth_put_reply(reply);
2135         return rc;
2136 }
2137 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2138
2139 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2140                 unsigned long data)
2141 {
2142         struct qeth_cmd_buffer *iob;
2143
2144         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2145
2146         iob = (struct qeth_cmd_buffer *) data;
2147         memcpy(&card->token.cm_filter_r,
2148                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2149                QETH_MPC_TOKEN_LENGTH);
2150         return 0;
2151 }
2152
2153 static int qeth_cm_enable(struct qeth_card *card)
2154 {
2155         int rc;
2156         struct qeth_cmd_buffer *iob;
2157
2158         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2159
2160         iob = qeth_wait_for_buffer(&card->write);
2161         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2162         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2163                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2164         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2165                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2166
2167         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2168                                     qeth_cm_enable_cb, NULL);
2169         return rc;
2170 }
2171
2172 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2173                 unsigned long data)
2174 {
2175         struct qeth_cmd_buffer *iob;
2176
2177         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2178
2179         iob = (struct qeth_cmd_buffer *) data;
2180         memcpy(&card->token.cm_connection_r,
2181                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2182                QETH_MPC_TOKEN_LENGTH);
2183         return 0;
2184 }
2185
2186 static int qeth_cm_setup(struct qeth_card *card)
2187 {
2188         int rc;
2189         struct qeth_cmd_buffer *iob;
2190
2191         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2192
2193         iob = qeth_wait_for_buffer(&card->write);
2194         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2195         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2196                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2197         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2198                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2199         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2200                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2201         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2202                                     qeth_cm_setup_cb, NULL);
2203         return rc;
2204 }
2205
2206 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2207 {
2208         struct net_device *dev = card->dev;
2209         unsigned int new_mtu;
2210
2211         if (!max_mtu) {
2212                 /* IQD needs accurate max MTU to set up its RX buffers: */
2213                 if (IS_IQD(card))
2214                         return -EINVAL;
2215                 /* tolerate quirky HW: */
2216                 max_mtu = ETH_MAX_MTU;
2217         }
2218
2219         rtnl_lock();
2220         if (IS_IQD(card)) {
2221                 /* move any device with default MTU to new max MTU: */
2222                 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2223
2224                 /* adjust RX buffer size to new max MTU: */
2225                 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2226                 if (dev->max_mtu && dev->max_mtu != max_mtu)
2227                         qeth_free_qdio_buffers(card);
2228         } else {
2229                 if (dev->mtu)
2230                         new_mtu = dev->mtu;
2231                 /* default MTUs for first setup: */
2232                 else if (IS_LAYER2(card))
2233                         new_mtu = ETH_DATA_LEN;
2234                 else
2235                         new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2236         }
2237
2238         dev->max_mtu = max_mtu;
2239         dev->mtu = min(new_mtu, max_mtu);
2240         rtnl_unlock();
2241         return 0;
2242 }
2243
2244 static int qeth_get_mtu_outof_framesize(int framesize)
2245 {
2246         switch (framesize) {
2247         case 0x4000:
2248                 return 8192;
2249         case 0x6000:
2250                 return 16384;
2251         case 0xa000:
2252                 return 32768;
2253         case 0xffff:
2254                 return 57344;
2255         default:
2256                 return 0;
2257         }
2258 }
2259
2260 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2261                 unsigned long data)
2262 {
2263         __u16 mtu, framesize;
2264         __u16 len;
2265         __u8 link_type;
2266         struct qeth_cmd_buffer *iob;
2267
2268         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2269
2270         iob = (struct qeth_cmd_buffer *) data;
2271         memcpy(&card->token.ulp_filter_r,
2272                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2273                QETH_MPC_TOKEN_LENGTH);
2274         if (card->info.type == QETH_CARD_TYPE_IQD) {
2275                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2276                 mtu = qeth_get_mtu_outof_framesize(framesize);
2277         } else {
2278                 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2279         }
2280         *(u16 *)reply->param = mtu;
2281
2282         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2283         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2284                 memcpy(&link_type,
2285                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2286                 card->info.link_type = link_type;
2287         } else
2288                 card->info.link_type = 0;
2289         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2290         return 0;
2291 }
2292
2293 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2294 {
2295         if (IS_OSN(card))
2296                 return QETH_PROT_OSN2;
2297         return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2298 }
2299
2300 static int qeth_ulp_enable(struct qeth_card *card)
2301 {
2302         u8 prot_type = qeth_mpc_select_prot_type(card);
2303         struct qeth_cmd_buffer *iob;
2304         u16 max_mtu;
2305         int rc;
2306
2307         /*FIXME: trace view callbacks*/
2308         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2309
2310         iob = qeth_wait_for_buffer(&card->write);
2311         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2312
2313         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2314         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2315         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2316                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2317         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2318                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2319         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2320                                     qeth_ulp_enable_cb, &max_mtu);
2321         if (rc)
2322                 return rc;
2323         return qeth_update_max_mtu(card, max_mtu);
2324 }
2325
2326 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2327                 unsigned long data)
2328 {
2329         struct qeth_cmd_buffer *iob;
2330
2331         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2332
2333         iob = (struct qeth_cmd_buffer *) data;
2334         memcpy(&card->token.ulp_connection_r,
2335                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2336                QETH_MPC_TOKEN_LENGTH);
2337         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2338                      3)) {
2339                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2340                 dev_err(&card->gdev->dev, "A connection could not be "
2341                         "established because of an OLM limit\n");
2342                 iob->rc = -EMLINK;
2343         }
2344         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2345         return 0;
2346 }
2347
2348 static int qeth_ulp_setup(struct qeth_card *card)
2349 {
2350         int rc;
2351         __u16 temp;
2352         struct qeth_cmd_buffer *iob;
2353         struct ccw_dev_id dev_id;
2354
2355         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2356
2357         iob = qeth_wait_for_buffer(&card->write);
2358         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2359
2360         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2361                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2362         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2363                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2364         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2365                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2366
2367         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2368         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2369         temp = (card->info.cula << 8) + card->info.unit_addr2;
2370         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2371         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2372                                     qeth_ulp_setup_cb, NULL);
2373         return rc;
2374 }
2375
2376 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2377 {
2378         struct qeth_qdio_out_buffer *newbuf;
2379
2380         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2381         if (!newbuf)
2382                 return -ENOMEM;
2383
2384         newbuf->buffer = q->qdio_bufs[bidx];
2385         skb_queue_head_init(&newbuf->skb_list);
2386         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2387         newbuf->q = q;
2388         newbuf->next_pending = q->bufs[bidx];
2389         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2390         q->bufs[bidx] = newbuf;
2391         return 0;
2392 }
2393
2394 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2395 {
2396         if (!q)
2397                 return;
2398
2399         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2400         kfree(q);
2401 }
2402
2403 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2404 {
2405         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2406
2407         if (!q)
2408                 return NULL;
2409
2410         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2411                 kfree(q);
2412                 return NULL;
2413         }
2414         return q;
2415 }
2416
2417 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2418 {
2419         int i, j;
2420
2421         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2422
2423         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2424                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2425                 return 0;
2426
2427         QETH_DBF_TEXT(SETUP, 2, "inq");
2428         card->qdio.in_q = qeth_alloc_qdio_queue();
2429         if (!card->qdio.in_q)
2430                 goto out_nomem;
2431
2432         /* inbound buffer pool */
2433         if (qeth_alloc_buffer_pool(card))
2434                 goto out_freeinq;
2435
2436         /* outbound */
2437         card->qdio.out_qs =
2438                 kcalloc(card->qdio.no_out_queues,
2439                         sizeof(struct qeth_qdio_out_q *),
2440                         GFP_KERNEL);
2441         if (!card->qdio.out_qs)
2442                 goto out_freepool;
2443         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2444                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2445                 if (!card->qdio.out_qs[i])
2446                         goto out_freeoutq;
2447                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2448                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2449                 card->qdio.out_qs[i]->queue_no = i;
2450                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2451                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2452                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2453                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2454                                 goto out_freeoutqbufs;
2455                 }
2456         }
2457
2458         /* completion */
2459         if (qeth_alloc_cq(card))
2460                 goto out_freeoutq;
2461
2462         return 0;
2463
2464 out_freeoutqbufs:
2465         while (j > 0) {
2466                 --j;
2467                 kmem_cache_free(qeth_qdio_outbuf_cache,
2468                                 card->qdio.out_qs[i]->bufs[j]);
2469                 card->qdio.out_qs[i]->bufs[j] = NULL;
2470         }
2471 out_freeoutq:
2472         while (i > 0) {
2473                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2474                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2475         }
2476         kfree(card->qdio.out_qs);
2477         card->qdio.out_qs = NULL;
2478 out_freepool:
2479         qeth_free_buffer_pool(card);
2480 out_freeinq:
2481         qeth_free_qdio_queue(card->qdio.in_q);
2482         card->qdio.in_q = NULL;
2483 out_nomem:
2484         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2485         return -ENOMEM;
2486 }
2487
2488 static void qeth_free_qdio_buffers(struct qeth_card *card)
2489 {
2490         int i, j;
2491
2492         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2493                 QETH_QDIO_UNINITIALIZED)
2494                 return;
2495
2496         qeth_free_cq(card);
2497         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2498         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2499                 if (card->qdio.in_q->bufs[j].rx_skb)
2500                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2501         }
2502         qeth_free_qdio_queue(card->qdio.in_q);
2503         card->qdio.in_q = NULL;
2504         /* inbound buffer pool */
2505         qeth_free_buffer_pool(card);
2506         /* free outbound qdio_qs */
2507         if (card->qdio.out_qs) {
2508                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2509                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2510                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2511                 }
2512                 kfree(card->qdio.out_qs);
2513                 card->qdio.out_qs = NULL;
2514         }
2515 }
2516
2517 static void qeth_create_qib_param_field(struct qeth_card *card,
2518                 char *param_field)
2519 {
2520
2521         param_field[0] = _ascebc['P'];
2522         param_field[1] = _ascebc['C'];
2523         param_field[2] = _ascebc['I'];
2524         param_field[3] = _ascebc['T'];
2525         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2526         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2527         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2528 }
2529
2530 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2531                 char *param_field)
2532 {
2533         param_field[16] = _ascebc['B'];
2534         param_field[17] = _ascebc['L'];
2535         param_field[18] = _ascebc['K'];
2536         param_field[19] = _ascebc['T'];
2537         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2538         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2539         *((unsigned int *) (&param_field[28])) =
2540                 card->info.blkt.inter_packet_jumbo;
2541 }
2542
2543 static int qeth_qdio_activate(struct qeth_card *card)
2544 {
2545         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2546         return qdio_activate(CARD_DDEV(card));
2547 }
2548
2549 static int qeth_dm_act(struct qeth_card *card)
2550 {
2551         int rc;
2552         struct qeth_cmd_buffer *iob;
2553
2554         QETH_DBF_TEXT(SETUP, 2, "dmact");
2555
2556         iob = qeth_wait_for_buffer(&card->write);
2557         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2558
2559         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2560                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2561         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2562                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2563         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2564         return rc;
2565 }
2566
2567 static int qeth_mpc_initialize(struct qeth_card *card)
2568 {
2569         int rc;
2570
2571         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2572
2573         rc = qeth_issue_next_read(card);
2574         if (rc) {
2575                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2576                 return rc;
2577         }
2578         rc = qeth_cm_enable(card);
2579         if (rc) {
2580                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2581                 goto out_qdio;
2582         }
2583         rc = qeth_cm_setup(card);
2584         if (rc) {
2585                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2586                 goto out_qdio;
2587         }
2588         rc = qeth_ulp_enable(card);
2589         if (rc) {
2590                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2591                 goto out_qdio;
2592         }
2593         rc = qeth_ulp_setup(card);
2594         if (rc) {
2595                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2596                 goto out_qdio;
2597         }
2598         rc = qeth_alloc_qdio_buffers(card);
2599         if (rc) {
2600                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2601                 goto out_qdio;
2602         }
2603         rc = qeth_qdio_establish(card);
2604         if (rc) {
2605                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2606                 qeth_free_qdio_buffers(card);
2607                 goto out_qdio;
2608         }
2609         rc = qeth_qdio_activate(card);
2610         if (rc) {
2611                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2612                 goto out_qdio;
2613         }
2614         rc = qeth_dm_act(card);
2615         if (rc) {
2616                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2617                 goto out_qdio;
2618         }
2619
2620         return 0;
2621 out_qdio:
2622         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2623         qdio_free(CARD_DDEV(card));
2624         return rc;
2625 }
2626
2627 void qeth_print_status_message(struct qeth_card *card)
2628 {
2629         switch (card->info.type) {
2630         case QETH_CARD_TYPE_OSD:
2631         case QETH_CARD_TYPE_OSM:
2632         case QETH_CARD_TYPE_OSX:
2633                 /* VM will use a non-zero first character
2634                  * to indicate a HiperSockets like reporting
2635                  * of the level OSA sets the first character to zero
2636                  * */
2637                 if (!card->info.mcl_level[0]) {
2638                         sprintf(card->info.mcl_level, "%02x%02x",
2639                                 card->info.mcl_level[2],
2640                                 card->info.mcl_level[3]);
2641                         break;
2642                 }
2643                 /* fallthrough */
2644         case QETH_CARD_TYPE_IQD:
2645                 if ((card->info.guestlan) ||
2646                     (card->info.mcl_level[0] & 0x80)) {
2647                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2648                                 card->info.mcl_level[0]];
2649                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2650                                 card->info.mcl_level[1]];
2651                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2652                                 card->info.mcl_level[2]];
2653                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2654                                 card->info.mcl_level[3]];
2655                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2656                 }
2657                 break;
2658         default:
2659                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2660         }
2661         dev_info(&card->gdev->dev,
2662                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2663                  qeth_get_cardname(card),
2664                  (card->info.mcl_level[0]) ? " (level: " : "",
2665                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2666                  (card->info.mcl_level[0]) ? ")" : "",
2667                  qeth_get_cardname_short(card));
2668 }
2669 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2670
2671 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2672 {
2673         struct qeth_buffer_pool_entry *entry;
2674
2675         QETH_CARD_TEXT(card, 5, "inwrklst");
2676
2677         list_for_each_entry(entry,
2678                             &card->qdio.init_pool.entry_list, init_list) {
2679                 qeth_put_buffer_pool_entry(card, entry);
2680         }
2681 }
2682
2683 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2684                                         struct qeth_card *card)
2685 {
2686         struct list_head *plh;
2687         struct qeth_buffer_pool_entry *entry;
2688         int i, free;
2689         struct page *page;
2690
2691         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2692                 return NULL;
2693
2694         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2695                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2696                 free = 1;
2697                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2698                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2699                                 free = 0;
2700                                 break;
2701                         }
2702                 }
2703                 if (free) {
2704                         list_del_init(&entry->list);
2705                         return entry;
2706                 }
2707         }
2708
2709         /* no free buffer in pool so take first one and swap pages */
2710         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2711                         struct qeth_buffer_pool_entry, list);
2712         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2713                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2714                         page = alloc_page(GFP_ATOMIC);
2715                         if (!page) {
2716                                 return NULL;
2717                         } else {
2718                                 free_page((unsigned long)entry->elements[i]);
2719                                 entry->elements[i] = page_address(page);
2720                                 if (card->options.performance_stats)
2721                                         card->perf_stats.sg_alloc_page_rx++;
2722                         }
2723                 }
2724         }
2725         list_del_init(&entry->list);
2726         return entry;
2727 }
2728
2729 static int qeth_init_input_buffer(struct qeth_card *card,
2730                 struct qeth_qdio_buffer *buf)
2731 {
2732         struct qeth_buffer_pool_entry *pool_entry;
2733         int i;
2734
2735         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2736                 buf->rx_skb = netdev_alloc_skb(card->dev,
2737                                                QETH_RX_PULL_LEN + ETH_HLEN);
2738                 if (!buf->rx_skb)
2739                         return 1;
2740         }
2741
2742         pool_entry = qeth_find_free_buffer_pool_entry(card);
2743         if (!pool_entry)
2744                 return 1;
2745
2746         /*
2747          * since the buffer is accessed only from the input_tasklet
2748          * there shouldn't be a need to synchronize; also, since we use
2749          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2750          * buffers
2751          */
2752
2753         buf->pool_entry = pool_entry;
2754         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2755                 buf->buffer->element[i].length = PAGE_SIZE;
2756                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2757                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2758                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2759                 else
2760                         buf->buffer->element[i].eflags = 0;
2761                 buf->buffer->element[i].sflags = 0;
2762         }
2763         return 0;
2764 }
2765
2766 int qeth_init_qdio_queues(struct qeth_card *card)
2767 {
2768         int i, j;
2769         int rc;
2770
2771         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2772
2773         /* inbound queue */
2774         qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2775         memset(&card->rx, 0, sizeof(struct qeth_rx));
2776         qeth_initialize_working_pool_list(card);
2777         /*give only as many buffers to hardware as we have buffer pool entries*/
2778         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2779                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2780         card->qdio.in_q->next_buf_to_init =
2781                 card->qdio.in_buf_pool.buf_count - 1;
2782         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2783                      card->qdio.in_buf_pool.buf_count - 1);
2784         if (rc) {
2785                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2786                 return rc;
2787         }
2788
2789         /* completion */
2790         rc = qeth_cq_init(card);
2791         if (rc) {
2792                 return rc;
2793         }
2794
2795         /* outbound queue */
2796         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2797                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2798                                    QDIO_MAX_BUFFERS_PER_Q);
2799                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2800                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2801                                                  card->qdio.out_qs[i]->bufs[j]);
2802                 }
2803                 card->qdio.out_qs[i]->card = card;
2804                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2805                 card->qdio.out_qs[i]->do_pack = 0;
2806                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2807                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2808                 atomic_set(&card->qdio.out_qs[i]->state,
2809                            QETH_OUT_Q_UNLOCKED);
2810         }
2811         return 0;
2812 }
2813 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2814
2815 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2816 {
2817         switch (link_type) {
2818         case QETH_LINK_TYPE_HSTR:
2819                 return 2;
2820         default:
2821                 return 1;
2822         }
2823 }
2824
2825 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2826                                     struct qeth_ipa_cmd *cmd,
2827                                     enum qeth_ipa_cmds command,
2828                                     enum qeth_prot_versions prot)
2829 {
2830         cmd->hdr.command = command;
2831         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2832         /* cmd->hdr.seqno is set by qeth_send_control_data() */
2833         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2834         cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port;
2835         cmd->hdr.prim_version_no = IS_LAYER2(card) ? 2 : 1;
2836         cmd->hdr.param_count = 1;
2837         cmd->hdr.prot_version = prot;
2838 }
2839
2840 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2841                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2842 {
2843         struct qeth_cmd_buffer *iob;
2844
2845         iob = qeth_get_buffer(&card->write);
2846         if (iob) {
2847                 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
2848         } else {
2849                 dev_warn(&card->gdev->dev,
2850                          "The qeth driver ran out of channel command buffers\n");
2851                 QETH_DBF_MESSAGE(1, "device %x ran out of channel command buffers",
2852                                  CARD_DEVID(card));
2853         }
2854
2855         return iob;
2856 }
2857 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2858
2859 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob)
2860 {
2861         u8 prot_type = qeth_mpc_select_prot_type(card);
2862
2863         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2864         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2865         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2866                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2867 }
2868 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2869
2870 /**
2871  * qeth_send_ipa_cmd() - send an IPA command
2872  *
2873  * See qeth_send_control_data() for explanation of the arguments.
2874  */
2875
2876 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2877                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2878                         unsigned long),
2879                 void *reply_param)
2880 {
2881         int rc;
2882
2883         QETH_CARD_TEXT(card, 4, "sendipa");
2884         qeth_prepare_ipa_cmd(card, iob);
2885         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2886                                                 iob, reply_cb, reply_param);
2887         if (rc == -ETIME) {
2888                 qeth_clear_ipacmd_list(card);
2889                 qeth_schedule_recovery(card);
2890         }
2891         return rc;
2892 }
2893 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2894
2895 static int qeth_send_startlan(struct qeth_card *card)
2896 {
2897         int rc;
2898         struct qeth_cmd_buffer *iob;
2899
2900         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2901
2902         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2903         if (!iob)
2904                 return -ENOMEM;
2905         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2906         return rc;
2907 }
2908
2909 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2910 {
2911         if (!cmd->hdr.return_code)
2912                 cmd->hdr.return_code =
2913                         cmd->data.setadapterparms.hdr.return_code;
2914         return cmd->hdr.return_code;
2915 }
2916
2917 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2918                 struct qeth_reply *reply, unsigned long data)
2919 {
2920         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2921
2922         QETH_CARD_TEXT(card, 3, "quyadpcb");
2923         if (qeth_setadpparms_inspect_rc(cmd))
2924                 return 0;
2925
2926         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2927                 card->info.link_type =
2928                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2929                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2930         }
2931         card->options.adp.supported_funcs =
2932                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2933         return 0;
2934 }
2935
2936 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2937                 __u32 command, __u32 cmdlen)
2938 {
2939         struct qeth_cmd_buffer *iob;
2940         struct qeth_ipa_cmd *cmd;
2941
2942         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2943                                      QETH_PROT_IPV4);
2944         if (iob) {
2945                 cmd = __ipa_cmd(iob);
2946                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2947                 cmd->data.setadapterparms.hdr.command_code = command;
2948                 cmd->data.setadapterparms.hdr.used_total = 1;
2949                 cmd->data.setadapterparms.hdr.seq_no = 1;
2950         }
2951
2952         return iob;
2953 }
2954
2955 static int qeth_query_setadapterparms(struct qeth_card *card)
2956 {
2957         int rc;
2958         struct qeth_cmd_buffer *iob;
2959
2960         QETH_CARD_TEXT(card, 3, "queryadp");
2961         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2962                                    sizeof(struct qeth_ipacmd_setadpparms));
2963         if (!iob)
2964                 return -ENOMEM;
2965         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2966         return rc;
2967 }
2968
2969 static int qeth_query_ipassists_cb(struct qeth_card *card,
2970                 struct qeth_reply *reply, unsigned long data)
2971 {
2972         struct qeth_ipa_cmd *cmd;
2973
2974         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2975
2976         cmd = (struct qeth_ipa_cmd *) data;
2977
2978         switch (cmd->hdr.return_code) {
2979         case IPA_RC_NOTSUPP:
2980         case IPA_RC_L2_UNSUPPORTED_CMD:
2981                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
2982                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2983                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2984                 return 0;
2985         default:
2986                 if (cmd->hdr.return_code) {
2987                         QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2988                                          CARD_DEVID(card),
2989                                          cmd->hdr.return_code);
2990                         return 0;
2991                 }
2992         }
2993
2994         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2995                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2996                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2997         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2998                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2999                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3000         } else
3001                 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3002                                  CARD_DEVID(card));
3003         return 0;
3004 }
3005
3006 static int qeth_query_ipassists(struct qeth_card *card,
3007                                 enum qeth_prot_versions prot)
3008 {
3009         int rc;
3010         struct qeth_cmd_buffer *iob;
3011
3012         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3013         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3014         if (!iob)
3015                 return -ENOMEM;
3016         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3017         return rc;
3018 }
3019
3020 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3021                                 struct qeth_reply *reply, unsigned long data)
3022 {
3023         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3024         struct qeth_query_switch_attributes *attrs;
3025         struct qeth_switch_info *sw_info;
3026
3027         QETH_CARD_TEXT(card, 2, "qswiatcb");
3028         if (qeth_setadpparms_inspect_rc(cmd))
3029                 return 0;
3030
3031         sw_info = (struct qeth_switch_info *)reply->param;
3032         attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3033         sw_info->capabilities = attrs->capabilities;
3034         sw_info->settings = attrs->settings;
3035         QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3036                         sw_info->settings);
3037         return 0;
3038 }
3039
3040 int qeth_query_switch_attributes(struct qeth_card *card,
3041                                  struct qeth_switch_info *sw_info)
3042 {
3043         struct qeth_cmd_buffer *iob;
3044
3045         QETH_CARD_TEXT(card, 2, "qswiattr");
3046         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3047                 return -EOPNOTSUPP;
3048         if (!netif_carrier_ok(card->dev))
3049                 return -ENOMEDIUM;
3050         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3051                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3052         if (!iob)
3053                 return -ENOMEM;
3054         return qeth_send_ipa_cmd(card, iob,
3055                                 qeth_query_switch_attributes_cb, sw_info);
3056 }
3057
3058 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3059                 struct qeth_reply *reply, unsigned long data)
3060 {
3061         struct qeth_ipa_cmd *cmd;
3062         __u16 rc;
3063
3064         cmd = (struct qeth_ipa_cmd *)data;
3065         rc = cmd->hdr.return_code;
3066         if (rc)
3067                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3068         else
3069                 card->info.diagass_support = cmd->data.diagass.ext;
3070         return 0;
3071 }
3072
3073 static int qeth_query_setdiagass(struct qeth_card *card)
3074 {
3075         struct qeth_cmd_buffer *iob;
3076         struct qeth_ipa_cmd    *cmd;
3077
3078         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3079         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3080         if (!iob)
3081                 return -ENOMEM;
3082         cmd = __ipa_cmd(iob);
3083         cmd->data.diagass.subcmd_len = 16;
3084         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3085         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3086 }
3087
3088 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3089 {
3090         unsigned long info = get_zeroed_page(GFP_KERNEL);
3091         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3092         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3093         struct ccw_dev_id ccwid;
3094         int level;
3095
3096         tid->chpid = card->info.chpid;
3097         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3098         tid->ssid = ccwid.ssid;
3099         tid->devno = ccwid.devno;
3100         if (!info)
3101                 return;
3102         level = stsi(NULL, 0, 0, 0);
3103         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3104                 tid->lparnr = info222->lpar_number;
3105         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3106                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3107                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3108         }
3109         free_page(info);
3110         return;
3111 }
3112
3113 static int qeth_hw_trap_cb(struct qeth_card *card,
3114                 struct qeth_reply *reply, unsigned long data)
3115 {
3116         struct qeth_ipa_cmd *cmd;
3117         __u16 rc;
3118
3119         cmd = (struct qeth_ipa_cmd *)data;
3120         rc = cmd->hdr.return_code;
3121         if (rc)
3122                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3123         return 0;
3124 }
3125
3126 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3127 {
3128         struct qeth_cmd_buffer *iob;
3129         struct qeth_ipa_cmd *cmd;
3130
3131         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3132         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3133         if (!iob)
3134                 return -ENOMEM;
3135         cmd = __ipa_cmd(iob);
3136         cmd->data.diagass.subcmd_len = 80;
3137         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3138         cmd->data.diagass.type = 1;
3139         cmd->data.diagass.action = action;
3140         switch (action) {
3141         case QETH_DIAGS_TRAP_ARM:
3142                 cmd->data.diagass.options = 0x0003;
3143                 cmd->data.diagass.ext = 0x00010000 +
3144                         sizeof(struct qeth_trap_id);
3145                 qeth_get_trap_id(card,
3146                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3147                 break;
3148         case QETH_DIAGS_TRAP_DISARM:
3149                 cmd->data.diagass.options = 0x0001;
3150                 break;
3151         case QETH_DIAGS_TRAP_CAPTURE:
3152                 break;
3153         }
3154         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3155 }
3156 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3157
3158 static int qeth_check_qdio_errors(struct qeth_card *card,
3159                                   struct qdio_buffer *buf,
3160                                   unsigned int qdio_error,
3161                                   const char *dbftext)
3162 {
3163         if (qdio_error) {
3164                 QETH_CARD_TEXT(card, 2, dbftext);
3165                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3166                                buf->element[15].sflags);
3167                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3168                                buf->element[14].sflags);
3169                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3170                 if ((buf->element[15].sflags) == 0x12) {
3171                         card->stats.rx_dropped++;
3172                         return 0;
3173                 } else
3174                         return 1;
3175         }
3176         return 0;
3177 }
3178
3179 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3180 {
3181         struct qeth_qdio_q *queue = card->qdio.in_q;
3182         struct list_head *lh;
3183         int count;
3184         int i;
3185         int rc;
3186         int newcount = 0;
3187
3188         count = (index < queue->next_buf_to_init)?
3189                 card->qdio.in_buf_pool.buf_count -
3190                 (queue->next_buf_to_init - index) :
3191                 card->qdio.in_buf_pool.buf_count -
3192                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3193         /* only requeue at a certain threshold to avoid SIGAs */
3194         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3195                 for (i = queue->next_buf_to_init;
3196                      i < queue->next_buf_to_init + count; ++i) {
3197                         if (qeth_init_input_buffer(card,
3198                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3199                                 break;
3200                         } else {
3201                                 newcount++;
3202                         }
3203                 }
3204
3205                 if (newcount < count) {
3206                         /* we are in memory shortage so we switch back to
3207                            traditional skb allocation and drop packages */
3208                         atomic_set(&card->force_alloc_skb, 3);
3209                         count = newcount;
3210                 } else {
3211                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3212                 }
3213
3214                 if (!count) {
3215                         i = 0;
3216                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3217                                 i++;
3218                         if (i == card->qdio.in_buf_pool.buf_count) {
3219                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3220                                 card->reclaim_index = index;
3221                                 schedule_delayed_work(
3222                                         &card->buffer_reclaim_work,
3223                                         QETH_RECLAIM_WORK_TIME);
3224                         }
3225                         return;
3226                 }
3227
3228                 /*
3229                  * according to old code it should be avoided to requeue all
3230                  * 128 buffers in order to benefit from PCI avoidance.
3231                  * this function keeps at least one buffer (the buffer at
3232                  * 'index') un-requeued -> this buffer is the first buffer that
3233                  * will be requeued the next time
3234                  */
3235                 if (card->options.performance_stats) {
3236                         card->perf_stats.inbound_do_qdio_cnt++;
3237                         card->perf_stats.inbound_do_qdio_start_time =
3238                                 qeth_get_micros();
3239                 }
3240                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3241                              queue->next_buf_to_init, count);
3242                 if (card->options.performance_stats)
3243                         card->perf_stats.inbound_do_qdio_time +=
3244                                 qeth_get_micros() -
3245                                 card->perf_stats.inbound_do_qdio_start_time;
3246                 if (rc) {
3247                         QETH_CARD_TEXT(card, 2, "qinberr");
3248                 }
3249                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3250                                           QDIO_MAX_BUFFERS_PER_Q;
3251         }
3252 }
3253
3254 static void qeth_buffer_reclaim_work(struct work_struct *work)
3255 {
3256         struct qeth_card *card = container_of(work, struct qeth_card,
3257                 buffer_reclaim_work.work);
3258
3259         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3260         qeth_queue_input_buffer(card, card->reclaim_index);
3261 }
3262
3263 static void qeth_handle_send_error(struct qeth_card *card,
3264                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3265 {
3266         int sbalf15 = buffer->buffer->element[15].sflags;
3267
3268         QETH_CARD_TEXT(card, 6, "hdsnderr");
3269         if (card->info.type == QETH_CARD_TYPE_IQD) {
3270                 if (sbalf15 == 0) {
3271                         qdio_err = 0;
3272                 } else {
3273                         qdio_err = 1;
3274                 }
3275         }
3276         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3277
3278         if (!qdio_err)
3279                 return;
3280
3281         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3282                 return;
3283
3284         QETH_CARD_TEXT(card, 1, "lnkfail");
3285         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3286                        (u16)qdio_err, (u8)sbalf15);
3287 }
3288
3289 /**
3290  * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3291  * @queue: queue to check for packing buffer
3292  *
3293  * Returns number of buffers that were prepared for flush.
3294  */
3295 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3296 {
3297         struct qeth_qdio_out_buffer *buffer;
3298
3299         buffer = queue->bufs[queue->next_buf_to_fill];
3300         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3301             (buffer->next_element_to_fill > 0)) {
3302                 /* it's a packing buffer */
3303                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3304                 queue->next_buf_to_fill =
3305                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3306                 return 1;
3307         }
3308         return 0;
3309 }
3310
3311 /*
3312  * Switched to packing state if the number of used buffers on a queue
3313  * reaches a certain limit.
3314  */
3315 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3316 {
3317         if (!queue->do_pack) {
3318                 if (atomic_read(&queue->used_buffers)
3319                     >= QETH_HIGH_WATERMARK_PACK){
3320                         /* switch non-PACKING -> PACKING */
3321                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3322                         if (queue->card->options.performance_stats)
3323                                 queue->card->perf_stats.sc_dp_p++;
3324                         queue->do_pack = 1;
3325                 }
3326         }
3327 }
3328
3329 /*
3330  * Switches from packing to non-packing mode. If there is a packing
3331  * buffer on the queue this buffer will be prepared to be flushed.
3332  * In that case 1 is returned to inform the caller. If no buffer
3333  * has to be flushed, zero is returned.
3334  */
3335 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3336 {
3337         if (queue->do_pack) {
3338                 if (atomic_read(&queue->used_buffers)
3339                     <= QETH_LOW_WATERMARK_PACK) {
3340                         /* switch PACKING -> non-PACKING */
3341                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3342                         if (queue->card->options.performance_stats)
3343                                 queue->card->perf_stats.sc_p_dp++;
3344                         queue->do_pack = 0;
3345                         return qeth_prep_flush_pack_buffer(queue);
3346                 }
3347         }
3348         return 0;
3349 }
3350
3351 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3352                                int count)
3353 {
3354         struct qeth_qdio_out_buffer *buf;
3355         int rc;
3356         int i;
3357         unsigned int qdio_flags;
3358
3359         for (i = index; i < index + count; ++i) {
3360                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3361                 buf = queue->bufs[bidx];
3362                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3363                                 SBAL_EFLAGS_LAST_ENTRY;
3364
3365                 if (queue->bufstates)
3366                         queue->bufstates[bidx].user = buf;
3367
3368                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3369                         continue;
3370
3371                 if (!queue->do_pack) {
3372                         if ((atomic_read(&queue->used_buffers) >=
3373                                 (QETH_HIGH_WATERMARK_PACK -
3374                                  QETH_WATERMARK_PACK_FUZZ)) &&
3375                             !atomic_read(&queue->set_pci_flags_count)) {
3376                                 /* it's likely that we'll go to packing
3377                                  * mode soon */
3378                                 atomic_inc(&queue->set_pci_flags_count);
3379                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3380                         }
3381                 } else {
3382                         if (!atomic_read(&queue->set_pci_flags_count)) {
3383                                 /*
3384                                  * there's no outstanding PCI any more, so we
3385                                  * have to request a PCI to be sure the the PCI
3386                                  * will wake at some time in the future then we
3387                                  * can flush packed buffers that might still be
3388                                  * hanging around, which can happen if no
3389                                  * further send was requested by the stack
3390                                  */
3391                                 atomic_inc(&queue->set_pci_flags_count);
3392                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3393                         }
3394                 }
3395         }
3396
3397         netif_trans_update(queue->card->dev);
3398         if (queue->card->options.performance_stats) {
3399                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3400                 queue->card->perf_stats.outbound_do_qdio_start_time =
3401                         qeth_get_micros();
3402         }
3403         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3404         if (atomic_read(&queue->set_pci_flags_count))
3405                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3406         atomic_add(count, &queue->used_buffers);
3407
3408         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3409                      queue->queue_no, index, count);
3410         if (queue->card->options.performance_stats)
3411                 queue->card->perf_stats.outbound_do_qdio_time +=
3412                         qeth_get_micros() -
3413                         queue->card->perf_stats.outbound_do_qdio_start_time;
3414         if (rc) {
3415                 queue->card->stats.tx_errors += count;
3416                 /* ignore temporary SIGA errors without busy condition */
3417                 if (rc == -ENOBUFS)
3418                         return;
3419                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3420                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3421                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3422                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3423                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3424
3425                 /* this must not happen under normal circumstances. if it
3426                  * happens something is really wrong -> recover */
3427                 qeth_schedule_recovery(queue->card);
3428                 return;
3429         }
3430         if (queue->card->options.performance_stats)
3431                 queue->card->perf_stats.bufs_sent += count;
3432 }
3433
3434 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3435 {
3436         int index;
3437         int flush_cnt = 0;
3438         int q_was_packing = 0;
3439
3440         /*
3441          * check if weed have to switch to non-packing mode or if
3442          * we have to get a pci flag out on the queue
3443          */
3444         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3445             !atomic_read(&queue->set_pci_flags_count)) {
3446                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3447                                 QETH_OUT_Q_UNLOCKED) {
3448                         /*
3449                          * If we get in here, there was no action in
3450                          * do_send_packet. So, we check if there is a
3451                          * packing buffer to be flushed here.
3452                          */
3453                         netif_stop_queue(queue->card->dev);
3454                         index = queue->next_buf_to_fill;
3455                         q_was_packing = queue->do_pack;
3456                         /* queue->do_pack may change */
3457                         barrier();
3458                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3459                         if (!flush_cnt &&
3460                             !atomic_read(&queue->set_pci_flags_count))
3461                                 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3462                         if (queue->card->options.performance_stats &&
3463                             q_was_packing)
3464                                 queue->card->perf_stats.bufs_sent_pack +=
3465                                         flush_cnt;
3466                         if (flush_cnt)
3467                                 qeth_flush_buffers(queue, index, flush_cnt);
3468                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3469                 }
3470         }
3471 }
3472
3473 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3474                                  unsigned long card_ptr)
3475 {
3476         struct qeth_card *card = (struct qeth_card *)card_ptr;
3477
3478         if (card->dev->flags & IFF_UP)
3479                 napi_schedule(&card->napi);
3480 }
3481
3482 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3483 {
3484         int rc;
3485
3486         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3487                 rc = -1;
3488                 goto out;
3489         } else {
3490                 if (card->options.cq == cq) {
3491                         rc = 0;
3492                         goto out;
3493                 }
3494
3495                 if (card->state != CARD_STATE_DOWN &&
3496                     card->state != CARD_STATE_RECOVER) {
3497                         rc = -1;
3498                         goto out;
3499                 }
3500
3501                 qeth_free_qdio_buffers(card);
3502                 card->options.cq = cq;
3503                 rc = 0;
3504         }
3505 out:
3506         return rc;
3507
3508 }
3509 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3510
3511 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3512                                  unsigned int queue, int first_element,
3513                                  int count)
3514 {
3515         struct qeth_qdio_q *cq = card->qdio.c_q;
3516         int i;
3517         int rc;
3518
3519         if (!qeth_is_cq(card, queue))
3520                 goto out;
3521
3522         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3523         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3524         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3525
3526         if (qdio_err) {
3527                 netif_stop_queue(card->dev);
3528                 qeth_schedule_recovery(card);
3529                 goto out;
3530         }
3531
3532         if (card->options.performance_stats) {
3533                 card->perf_stats.cq_cnt++;
3534                 card->perf_stats.cq_start_time = qeth_get_micros();
3535         }
3536
3537         for (i = first_element; i < first_element + count; ++i) {
3538                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3539                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3540                 int e = 0;
3541
3542                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3543                        buffer->element[e].addr) {
3544                         unsigned long phys_aob_addr;
3545
3546                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3547                         qeth_qdio_handle_aob(card, phys_aob_addr);
3548                         ++e;
3549                 }
3550                 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3551         }
3552         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3553                     card->qdio.c_q->next_buf_to_init,
3554                     count);
3555         if (rc) {
3556                 dev_warn(&card->gdev->dev,
3557                         "QDIO reported an error, rc=%i\n", rc);
3558                 QETH_CARD_TEXT(card, 2, "qcqherr");
3559         }
3560         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3561                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3562
3563         netif_wake_queue(card->dev);
3564
3565         if (card->options.performance_stats) {
3566                 int delta_t = qeth_get_micros();
3567                 delta_t -= card->perf_stats.cq_start_time;
3568                 card->perf_stats.cq_time += delta_t;
3569         }
3570 out:
3571         return;
3572 }
3573
3574 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3575                                     unsigned int qdio_err, int queue,
3576                                     int first_elem, int count,
3577                                     unsigned long card_ptr)
3578 {
3579         struct qeth_card *card = (struct qeth_card *)card_ptr;
3580
3581         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3582         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3583
3584         if (qeth_is_cq(card, queue))
3585                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3586         else if (qdio_err)
3587                 qeth_schedule_recovery(card);
3588 }
3589
3590 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3591                                      unsigned int qdio_error, int __queue,
3592                                      int first_element, int count,
3593                                      unsigned long card_ptr)
3594 {
3595         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3596         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3597         struct qeth_qdio_out_buffer *buffer;
3598         int i;
3599
3600         QETH_CARD_TEXT(card, 6, "qdouhdl");
3601         if (qdio_error & QDIO_ERROR_FATAL) {
3602                 QETH_CARD_TEXT(card, 2, "achkcond");
3603                 netif_stop_queue(card->dev);
3604                 qeth_schedule_recovery(card);
3605                 return;
3606         }
3607         if (card->options.performance_stats) {
3608                 card->perf_stats.outbound_handler_cnt++;
3609                 card->perf_stats.outbound_handler_start_time =
3610                         qeth_get_micros();
3611         }
3612         for (i = first_element; i < (first_element + count); ++i) {
3613                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3614                 buffer = queue->bufs[bidx];
3615                 qeth_handle_send_error(card, buffer, qdio_error);
3616
3617                 if (queue->bufstates &&
3618                     (queue->bufstates[bidx].flags &
3619                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3620                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3621
3622                         if (atomic_cmpxchg(&buffer->state,
3623                                            QETH_QDIO_BUF_PRIMED,
3624                                            QETH_QDIO_BUF_PENDING) ==
3625                                 QETH_QDIO_BUF_PRIMED) {
3626                                 qeth_notify_skbs(queue, buffer,
3627                                                  TX_NOTIFY_PENDING);
3628                         }
3629                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3630
3631                         /* prepare the queue slot for re-use: */
3632                         qeth_scrub_qdio_buffer(buffer->buffer,
3633                                                QETH_MAX_BUFFER_ELEMENTS(card));
3634                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3635                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3636                                 qeth_schedule_recovery(card);
3637                         }
3638                 } else {
3639                         if (card->options.cq == QETH_CQ_ENABLED) {
3640                                 enum iucv_tx_notify n;
3641
3642                                 n = qeth_compute_cq_notification(
3643                                         buffer->buffer->element[15].sflags, 0);
3644                                 qeth_notify_skbs(queue, buffer, n);
3645                         }
3646
3647                         qeth_clear_output_buffer(queue, buffer);
3648                 }
3649                 qeth_cleanup_handled_pending(queue, bidx, 0);
3650         }
3651         atomic_sub(count, &queue->used_buffers);
3652         /* check if we need to do something on this outbound queue */
3653         if (card->info.type != QETH_CARD_TYPE_IQD)
3654                 qeth_check_outbound_queue(queue);
3655
3656         netif_wake_queue(queue->card->dev);
3657         if (card->options.performance_stats)
3658                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3659                         card->perf_stats.outbound_handler_start_time;
3660 }
3661
3662 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3663 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3664 {
3665         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3666                 return 2;
3667         return queue_num;
3668 }
3669
3670 /**
3671  * Note: Function assumes that we have 4 outbound queues.
3672  */
3673 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3674                             int ipv)
3675 {
3676         __be16 *tci;
3677         u8 tos;
3678
3679         switch (card->qdio.do_prio_queueing) {
3680         case QETH_PRIO_Q_ING_TOS:
3681         case QETH_PRIO_Q_ING_PREC:
3682                 switch (ipv) {
3683                 case 4:
3684                         tos = ipv4_get_dsfield(ip_hdr(skb));
3685                         break;
3686                 case 6:
3687                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3688                         break;
3689                 default:
3690                         return card->qdio.default_out_queue;
3691                 }
3692                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3693                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3694                 if (tos & IPTOS_MINCOST)
3695                         return qeth_cut_iqd_prio(card, 3);
3696                 if (tos & IPTOS_RELIABILITY)
3697                         return 2;
3698                 if (tos & IPTOS_THROUGHPUT)
3699                         return 1;
3700                 if (tos & IPTOS_LOWDELAY)
3701                         return 0;
3702                 break;
3703         case QETH_PRIO_Q_ING_SKB:
3704                 if (skb->priority > 5)
3705                         return 0;
3706                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3707         case QETH_PRIO_Q_ING_VLAN:
3708                 tci = &((struct ethhdr *)skb->data)->h_proto;
3709                 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3710                         return qeth_cut_iqd_prio(card,
3711                         ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3712                 break;
3713         default:
3714                 break;
3715         }
3716         return card->qdio.default_out_queue;
3717 }
3718 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3719
3720 /**
3721  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3722  * @skb:                                SKB address
3723  *
3724  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3725  * fragmented part of the SKB. Returns zero for linear SKB.
3726  */
3727 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3728 {
3729         int cnt, elements = 0;
3730
3731         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3732                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3733
3734                 elements += qeth_get_elements_for_range(
3735                         (addr_t)skb_frag_address(frag),
3736                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3737         }
3738         return elements;
3739 }
3740
3741 /**
3742  * qeth_count_elements() -      Counts the number of QDIO buffer elements needed
3743  *                              to transmit an skb.
3744  * @skb:                        the skb to operate on.
3745  * @data_offset:                skip this part of the skb's linear data
3746  *
3747  * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3748  * skb's data (both its linear part and paged fragments).
3749  */
3750 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3751 {
3752         unsigned int elements = qeth_get_elements_for_frags(skb);
3753         addr_t end = (addr_t)skb->data + skb_headlen(skb);
3754         addr_t start = (addr_t)skb->data + data_offset;
3755
3756         if (start != end)
3757                 elements += qeth_get_elements_for_range(start, end);
3758         return elements;
3759 }
3760 EXPORT_SYMBOL_GPL(qeth_count_elements);
3761
3762 #define QETH_HDR_CACHE_OBJ_SIZE         (sizeof(struct qeth_hdr_tso) + \
3763                                          MAX_TCP_HEADER)
3764
3765 /**
3766  * qeth_add_hw_header() - add a HW header to an skb.
3767  * @skb: skb that the HW header should be added to.
3768  * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3769  *       it contains a valid pointer to a qeth_hdr.
3770  * @hdr_len: length of the HW header.
3771  * @proto_len: length of protocol headers that need to be in same page as the
3772  *             HW header.
3773  *
3774  * Returns the pushed length. If the header can't be pushed on
3775  * (eg. because it would cross a page boundary), it is allocated from
3776  * the cache instead and 0 is returned.
3777  * The number of needed buffer elements is returned in @elements.
3778  * Error to create the hdr is indicated by returning with < 0.
3779  */
3780 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb,
3781                        struct qeth_hdr **hdr, unsigned int hdr_len,
3782                        unsigned int proto_len, unsigned int *elements)
3783 {
3784         const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3785         const unsigned int contiguous = proto_len ? proto_len : 1;
3786         unsigned int __elements;
3787         addr_t start, end;
3788         bool push_ok;
3789         int rc;
3790
3791 check_layout:
3792         start = (addr_t)skb->data - hdr_len;
3793         end = (addr_t)skb->data;
3794
3795         if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3796                 /* Push HW header into same page as first protocol header. */
3797                 push_ok = true;
3798                 /* ... but TSO always needs a separate element for headers: */
3799                 if (skb_is_gso(skb))
3800                         __elements = 1 + qeth_count_elements(skb, proto_len);
3801                 else
3802                         __elements = qeth_count_elements(skb, 0);
3803         } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) {
3804                 /* Push HW header into a new page. */
3805                 push_ok = true;
3806                 __elements = 1 + qeth_count_elements(skb, 0);
3807         } else {
3808                 /* Use header cache, copy protocol headers up. */
3809                 push_ok = false;
3810                 __elements = 1 + qeth_count_elements(skb, proto_len);
3811         }
3812
3813         /* Compress skb to fit into one IO buffer: */
3814         if (__elements > max_elements) {
3815                 if (!skb_is_nonlinear(skb)) {
3816                         /* Drop it, no easy way of shrinking it further. */
3817                         QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3818                                          max_elements, __elements, skb->len);
3819                         return -E2BIG;
3820                 }
3821
3822                 rc = skb_linearize(skb);
3823                 if (card->options.performance_stats) {
3824                         if (rc)
3825                                 card->perf_stats.tx_linfail++;
3826                         else
3827                                 card->perf_stats.tx_lin++;
3828                 }
3829                 if (rc)
3830                         return rc;
3831
3832                 /* Linearization changed the layout, re-evaluate: */
3833                 goto check_layout;
3834         }
3835
3836         *elements = __elements;
3837         /* Add the header: */
3838         if (push_ok) {
3839                 *hdr = skb_push(skb, hdr_len);
3840                 return hdr_len;
3841         }
3842         /* fall back */
3843         if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3844                 return -E2BIG;
3845         *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3846         if (!*hdr)
3847                 return -ENOMEM;
3848         /* Copy protocol headers behind HW header: */
3849         skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3850         return 0;
3851 }
3852 EXPORT_SYMBOL_GPL(qeth_add_hw_header);
3853
3854 static void __qeth_fill_buffer(struct sk_buff *skb,
3855                                struct qeth_qdio_out_buffer *buf,
3856                                bool is_first_elem, unsigned int offset)
3857 {
3858         struct qdio_buffer *buffer = buf->buffer;
3859         int element = buf->next_element_to_fill;
3860         int length = skb_headlen(skb) - offset;
3861         char *data = skb->data + offset;
3862         int length_here, cnt;
3863
3864         /* map linear part into buffer element(s) */
3865         while (length > 0) {
3866                 /* length_here is the remaining amount of data in this page */
3867                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3868                 if (length < length_here)
3869                         length_here = length;
3870
3871                 buffer->element[element].addr = data;
3872                 buffer->element[element].length = length_here;
3873                 length -= length_here;
3874                 if (is_first_elem) {
3875                         is_first_elem = false;
3876                         if (length || skb_is_nonlinear(skb))
3877                                 /* skb needs additional elements */
3878                                 buffer->element[element].eflags =
3879                                         SBAL_EFLAGS_FIRST_FRAG;
3880                         else
3881                                 buffer->element[element].eflags = 0;
3882                 } else {
3883                         buffer->element[element].eflags =
3884                                 SBAL_EFLAGS_MIDDLE_FRAG;
3885                 }
3886                 data += length_here;
3887                 element++;
3888         }
3889
3890         /* map page frags into buffer element(s) */
3891         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3892                 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3893
3894                 data = skb_frag_address(frag);
3895                 length = skb_frag_size(frag);
3896                 while (length > 0) {
3897                         length_here = PAGE_SIZE -
3898                                 ((unsigned long) data % PAGE_SIZE);
3899                         if (length < length_here)
3900                                 length_here = length;
3901
3902                         buffer->element[element].addr = data;
3903                         buffer->element[element].length = length_here;
3904                         buffer->element[element].eflags =
3905                                 SBAL_EFLAGS_MIDDLE_FRAG;
3906                         length -= length_here;
3907                         data += length_here;
3908                         element++;
3909                 }
3910         }
3911
3912         if (buffer->element[element - 1].eflags)
3913                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3914         buf->next_element_to_fill = element;
3915 }
3916
3917 /**
3918  * qeth_fill_buffer() - map skb into an output buffer
3919  * @queue:      QDIO queue to submit the buffer on
3920  * @buf:        buffer to transport the skb
3921  * @skb:        skb to map into the buffer
3922  * @hdr:        qeth_hdr for this skb. Either at skb->data, or allocated
3923  *              from qeth_core_header_cache.
3924  * @offset:     when mapping the skb, start at skb->data + offset
3925  * @hd_len:     if > 0, build a dedicated header element of this size
3926  */
3927 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3928                             struct qeth_qdio_out_buffer *buf,
3929                             struct sk_buff *skb, struct qeth_hdr *hdr,
3930                             unsigned int offset, unsigned int hd_len)
3931 {
3932         struct qdio_buffer *buffer = buf->buffer;
3933         bool is_first_elem = true;
3934         int flush_cnt = 0;
3935
3936         __skb_queue_tail(&buf->skb_list, skb);
3937
3938         /* build dedicated header element */
3939         if (hd_len) {
3940                 int element = buf->next_element_to_fill;
3941                 is_first_elem = false;
3942
3943                 buffer->element[element].addr = hdr;
3944                 buffer->element[element].length = hd_len;
3945                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3946                 /* remember to free cache-allocated qeth_hdr: */
3947                 buf->is_header[element] = ((void *)hdr != skb->data);
3948                 buf->next_element_to_fill++;
3949         }
3950
3951         __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3952
3953         if (!queue->do_pack) {
3954                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3955                 /* set state to PRIMED -> will be flushed */
3956                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3957                 flush_cnt = 1;
3958         } else {
3959                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3960                 if (queue->card->options.performance_stats)
3961                         queue->card->perf_stats.skbs_sent_pack++;
3962                 if (buf->next_element_to_fill >=
3963                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3964                         /*
3965                          * packed buffer if full -> set state PRIMED
3966                          * -> will be flushed
3967                          */
3968                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3969                         flush_cnt = 1;
3970                 }
3971         }
3972         return flush_cnt;
3973 }
3974
3975 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3976                              struct qeth_hdr *hdr, unsigned int offset,
3977                              unsigned int hd_len)
3978 {
3979         int index = queue->next_buf_to_fill;
3980         struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
3981
3982         /*
3983          * check if buffer is empty to make sure that we do not 'overtake'
3984          * ourselves and try to fill a buffer that is already primed
3985          */
3986         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3987                 return -EBUSY;
3988         queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
3989         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3990         qeth_flush_buffers(queue, index, 1);
3991         return 0;
3992 }
3993 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3994
3995 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3996                         struct sk_buff *skb, struct qeth_hdr *hdr,
3997                         unsigned int offset, unsigned int hd_len,
3998                         int elements_needed)
3999 {
4000         struct qeth_qdio_out_buffer *buffer;
4001         int start_index;
4002         int flush_count = 0;
4003         int do_pack = 0;
4004         int tmp;
4005         int rc = 0;
4006
4007         /* spin until we get the queue ... */
4008         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4009                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4010         start_index = queue->next_buf_to_fill;
4011         buffer = queue->bufs[queue->next_buf_to_fill];
4012         /*
4013          * check if buffer is empty to make sure that we do not 'overtake'
4014          * ourselves and try to fill a buffer that is already primed
4015          */
4016         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4017                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4018                 return -EBUSY;
4019         }
4020         /* check if we need to switch packing state of this queue */
4021         qeth_switch_to_packing_if_needed(queue);
4022         if (queue->do_pack) {
4023                 do_pack = 1;
4024                 /* does packet fit in current buffer? */
4025                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4026                     buffer->next_element_to_fill) < elements_needed) {
4027                         /* ... no -> set state PRIMED */
4028                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4029                         flush_count++;
4030                         queue->next_buf_to_fill =
4031                                 (queue->next_buf_to_fill + 1) %
4032                                 QDIO_MAX_BUFFERS_PER_Q;
4033                         buffer = queue->bufs[queue->next_buf_to_fill];
4034                         /* we did a step forward, so check buffer state
4035                          * again */
4036                         if (atomic_read(&buffer->state) !=
4037                             QETH_QDIO_BUF_EMPTY) {
4038                                 qeth_flush_buffers(queue, start_index,
4039                                                            flush_count);
4040                                 atomic_set(&queue->state,
4041                                                 QETH_OUT_Q_UNLOCKED);
4042                                 rc = -EBUSY;
4043                                 goto out;
4044                         }
4045                 }
4046         }
4047         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4048         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4049                                   QDIO_MAX_BUFFERS_PER_Q;
4050         flush_count += tmp;
4051         if (flush_count)
4052                 qeth_flush_buffers(queue, start_index, flush_count);
4053         else if (!atomic_read(&queue->set_pci_flags_count))
4054                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4055         /*
4056          * queue->state will go from LOCKED -> UNLOCKED or from
4057          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4058          * (switch packing state or flush buffer to get another pci flag out).
4059          * In that case we will enter this loop
4060          */
4061         while (atomic_dec_return(&queue->state)) {
4062                 start_index = queue->next_buf_to_fill;
4063                 /* check if we can go back to non-packing state */
4064                 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4065                 /*
4066                  * check if we need to flush a packing buffer to get a pci
4067                  * flag out on the queue
4068                  */
4069                 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4070                         tmp = qeth_prep_flush_pack_buffer(queue);
4071                 if (tmp) {
4072                         qeth_flush_buffers(queue, start_index, tmp);
4073                         flush_count += tmp;
4074                 }
4075         }
4076 out:
4077         /* at this point the queue is UNLOCKED again */
4078         if (queue->card->options.performance_stats && do_pack)
4079                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4080
4081         return rc;
4082 }
4083 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4084
4085 void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr, unsigned int payload_len,
4086                        struct sk_buff *skb, unsigned int proto_len)
4087 {
4088         struct qeth_hdr_ext_tso *ext = &hdr->ext;
4089
4090         ext->hdr_tot_len = sizeof(*ext);
4091         ext->imb_hdr_no = 1;
4092         ext->hdr_type = 1;
4093         ext->hdr_version = 1;
4094         ext->hdr_len = 28;
4095         ext->payload_len = payload_len;
4096         ext->mss = skb_shinfo(skb)->gso_size;
4097         ext->dg_hdr_len = proto_len;
4098 }
4099 EXPORT_SYMBOL_GPL(qeth_fill_tso_ext);
4100
4101 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4102               struct qeth_qdio_out_q *queue, int ipv, int cast_type,
4103               void (*fill_header)(struct qeth_card *card, struct qeth_hdr *hdr,
4104                                   struct sk_buff *skb, int ipv, int cast_type,
4105                                   unsigned int data_len))
4106 {
4107         unsigned int proto_len, hw_hdr_len;
4108         unsigned int frame_len = skb->len;
4109         bool is_tso = skb_is_gso(skb);
4110         unsigned int data_offset = 0;
4111         struct qeth_hdr *hdr = NULL;
4112         unsigned int hd_len = 0;
4113         unsigned int elements;
4114         int push_len, rc;
4115         bool is_sg;
4116
4117         if (is_tso) {
4118                 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4119                 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4120         } else {
4121                 hw_hdr_len = sizeof(struct qeth_hdr);
4122                 proto_len = IS_IQD(card) ? ETH_HLEN : 0;
4123         }
4124
4125         rc = skb_cow_head(skb, hw_hdr_len);
4126         if (rc)
4127                 return rc;
4128
4129         push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len,
4130                                       &elements);
4131         if (push_len < 0)
4132                 return push_len;
4133         if (is_tso || !push_len) {
4134                 /* HW header needs its own buffer element. */
4135                 hd_len = hw_hdr_len + proto_len;
4136                 data_offset = push_len + proto_len;
4137         }
4138         memset(hdr, 0, hw_hdr_len);
4139         fill_header(card, hdr, skb, ipv, cast_type, frame_len);
4140         if (is_tso)
4141                 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4142                                   frame_len - proto_len, skb, proto_len);
4143
4144         is_sg = skb_is_nonlinear(skb);
4145         if (IS_IQD(card)) {
4146                 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
4147                                               hd_len);
4148         } else {
4149                 /* TODO: drop skb_orphan() once TX completion is fast enough */
4150                 skb_orphan(skb);
4151                 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4152                                          hd_len, elements);
4153         }
4154
4155         if (!rc) {
4156                 if (card->options.performance_stats) {
4157                         card->perf_stats.buf_elements_sent += elements;
4158                         if (is_sg)
4159                                 card->perf_stats.sg_skbs_sent++;
4160                         if (is_tso) {
4161                                 card->perf_stats.large_send_bytes += frame_len;
4162                                 card->perf_stats.large_send_cnt++;
4163                         }
4164                 }
4165         } else {
4166                 if (!push_len)
4167                         kmem_cache_free(qeth_core_header_cache, hdr);
4168                 if (rc == -EBUSY)
4169                         /* roll back to ETH header */
4170                         skb_pull(skb, push_len);
4171         }
4172         return rc;
4173 }
4174 EXPORT_SYMBOL_GPL(qeth_xmit);
4175
4176 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4177                 struct qeth_reply *reply, unsigned long data)
4178 {
4179         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4180         struct qeth_ipacmd_setadpparms *setparms;
4181
4182         QETH_CARD_TEXT(card, 4, "prmadpcb");
4183
4184         setparms = &(cmd->data.setadapterparms);
4185         if (qeth_setadpparms_inspect_rc(cmd)) {
4186                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4187                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4188         }
4189         card->info.promisc_mode = setparms->data.mode;
4190         return 0;
4191 }
4192
4193 void qeth_setadp_promisc_mode(struct qeth_card *card)
4194 {
4195         enum qeth_ipa_promisc_modes mode;
4196         struct net_device *dev = card->dev;
4197         struct qeth_cmd_buffer *iob;
4198         struct qeth_ipa_cmd *cmd;
4199
4200         QETH_CARD_TEXT(card, 4, "setprom");
4201
4202         if (((dev->flags & IFF_PROMISC) &&
4203              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4204             (!(dev->flags & IFF_PROMISC) &&
4205              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4206                 return;
4207         mode = SET_PROMISC_MODE_OFF;
4208         if (dev->flags & IFF_PROMISC)
4209                 mode = SET_PROMISC_MODE_ON;
4210         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4211
4212         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4213                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4214         if (!iob)
4215                 return;
4216         cmd = __ipa_cmd(iob);
4217         cmd->data.setadapterparms.data.mode = mode;
4218         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4219 }
4220 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4221
4222 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4223 {
4224         struct qeth_card *card;
4225
4226         card = dev->ml_priv;
4227
4228         QETH_CARD_TEXT(card, 5, "getstat");
4229
4230         return &card->stats;
4231 }
4232 EXPORT_SYMBOL_GPL(qeth_get_stats);
4233
4234 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4235                 struct qeth_reply *reply, unsigned long data)
4236 {
4237         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4238
4239         QETH_CARD_TEXT(card, 4, "chgmaccb");
4240         if (qeth_setadpparms_inspect_rc(cmd))
4241                 return 0;
4242
4243         if (IS_LAYER3(card) || !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4244                 ether_addr_copy(card->dev->dev_addr,
4245                                 cmd->data.setadapterparms.data.change_addr.addr);
4246                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4247         }
4248         return 0;
4249 }
4250
4251 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4252 {
4253         int rc;
4254         struct qeth_cmd_buffer *iob;
4255         struct qeth_ipa_cmd *cmd;
4256
4257         QETH_CARD_TEXT(card, 4, "chgmac");
4258
4259         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4260                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4261                                    sizeof(struct qeth_change_addr));
4262         if (!iob)
4263                 return -ENOMEM;
4264         cmd = __ipa_cmd(iob);
4265         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4266         cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4267         ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4268                         card->dev->dev_addr);
4269         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4270                                NULL);
4271         return rc;
4272 }
4273 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4274
4275 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4276                 struct qeth_reply *reply, unsigned long data)
4277 {
4278         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4279         struct qeth_set_access_ctrl *access_ctrl_req;
4280         int fallback = *(int *)reply->param;
4281
4282         QETH_CARD_TEXT(card, 4, "setaccb");
4283         if (cmd->hdr.return_code)
4284                 return 0;
4285         qeth_setadpparms_inspect_rc(cmd);
4286
4287         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4288         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4289         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4290         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4291                 cmd->data.setadapterparms.hdr.return_code);
4292         if (cmd->data.setadapterparms.hdr.return_code !=
4293                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4294                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4295                                  access_ctrl_req->subcmd_code, CARD_DEVID(card),
4296                                  cmd->data.setadapterparms.hdr.return_code);
4297         switch (cmd->data.setadapterparms.hdr.return_code) {
4298         case SET_ACCESS_CTRL_RC_SUCCESS:
4299                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4300                         dev_info(&card->gdev->dev,
4301                             "QDIO data connection isolation is deactivated\n");
4302                 } else {
4303                         dev_info(&card->gdev->dev,
4304                             "QDIO data connection isolation is activated\n");
4305                 }
4306                 break;
4307         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4308                 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4309                                  CARD_DEVID(card));
4310                 if (fallback)
4311                         card->options.isolation = card->options.prev_isolation;
4312                 break;
4313         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4314                 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4315                                  CARD_DEVID(card));
4316                 if (fallback)
4317                         card->options.isolation = card->options.prev_isolation;
4318                 break;
4319         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4320                 dev_err(&card->gdev->dev, "Adapter does not "
4321                         "support QDIO data connection isolation\n");
4322                 break;
4323         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4324                 dev_err(&card->gdev->dev,
4325                         "Adapter is dedicated. "
4326                         "QDIO data connection isolation not supported\n");
4327                 if (fallback)
4328                         card->options.isolation = card->options.prev_isolation;
4329                 break;
4330         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4331                 dev_err(&card->gdev->dev,
4332                         "TSO does not permit QDIO data connection isolation\n");
4333                 if (fallback)
4334                         card->options.isolation = card->options.prev_isolation;
4335                 break;
4336         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4337                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4338                         "support reflective relay mode\n");
4339                 if (fallback)
4340                         card->options.isolation = card->options.prev_isolation;
4341                 break;
4342         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4343                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4344                                         "enabled at the adjacent switch port");
4345                 if (fallback)
4346                         card->options.isolation = card->options.prev_isolation;
4347                 break;
4348         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4349                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4350                                         "at the adjacent switch failed\n");
4351                 break;
4352         default:
4353                 /* this should never happen */
4354                 if (fallback)
4355                         card->options.isolation = card->options.prev_isolation;
4356                 break;
4357         }
4358         return 0;
4359 }
4360
4361 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4362                 enum qeth_ipa_isolation_modes isolation, int fallback)
4363 {
4364         int rc;
4365         struct qeth_cmd_buffer *iob;
4366         struct qeth_ipa_cmd *cmd;
4367         struct qeth_set_access_ctrl *access_ctrl_req;
4368
4369         QETH_CARD_TEXT(card, 4, "setacctl");
4370
4371         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4372         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4373
4374         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4375                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4376                                    sizeof(struct qeth_set_access_ctrl));
4377         if (!iob)
4378                 return -ENOMEM;
4379         cmd = __ipa_cmd(iob);
4380         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4381         access_ctrl_req->subcmd_code = isolation;
4382
4383         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4384                                &fallback);
4385         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4386         return rc;
4387 }
4388
4389 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4390 {
4391         int rc = 0;
4392
4393         QETH_CARD_TEXT(card, 4, "setactlo");
4394
4395         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4396              card->info.type == QETH_CARD_TYPE_OSX) &&
4397              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4398                 rc = qeth_setadpparms_set_access_ctrl(card,
4399                         card->options.isolation, fallback);
4400                 if (rc) {
4401                         QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4402                                          rc, CARD_DEVID(card));
4403                         rc = -EOPNOTSUPP;
4404                 }
4405         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4406                 card->options.isolation = ISOLATION_MODE_NONE;
4407
4408                 dev_err(&card->gdev->dev, "Adapter does not "
4409                         "support QDIO data connection isolation\n");
4410                 rc = -EOPNOTSUPP;
4411         }
4412         return rc;
4413 }
4414 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4415
4416 void qeth_tx_timeout(struct net_device *dev)
4417 {
4418         struct qeth_card *card;
4419
4420         card = dev->ml_priv;
4421         QETH_CARD_TEXT(card, 4, "txtimeo");
4422         card->stats.tx_errors++;
4423         qeth_schedule_recovery(card);
4424 }
4425 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4426
4427 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4428 {
4429         struct qeth_card *card = dev->ml_priv;
4430         int rc = 0;
4431
4432         switch (regnum) {
4433         case MII_BMCR: /* Basic mode control register */
4434                 rc = BMCR_FULLDPLX;
4435                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4436                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4437                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4438                     (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4439                         rc |= BMCR_SPEED100;
4440                 break;
4441         case MII_BMSR: /* Basic mode status register */
4442                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4443                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4444                      BMSR_100BASE4;
4445                 break;
4446         case MII_PHYSID1: /* PHYS ID 1 */
4447                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4448                      dev->dev_addr[2];
4449                 rc = (rc >> 5) & 0xFFFF;
4450                 break;
4451         case MII_PHYSID2: /* PHYS ID 2 */
4452                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4453                 break;
4454         case MII_ADVERTISE: /* Advertisement control reg */
4455                 rc = ADVERTISE_ALL;
4456                 break;
4457         case MII_LPA: /* Link partner ability reg */
4458                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4459                      LPA_100BASE4 | LPA_LPACK;
4460                 break;
4461         case MII_EXPANSION: /* Expansion register */
4462                 break;
4463         case MII_DCOUNTER: /* disconnect counter */
4464                 break;
4465         case MII_FCSCOUNTER: /* false carrier counter */
4466                 break;
4467         case MII_NWAYTEST: /* N-way auto-neg test register */
4468                 break;
4469         case MII_RERRCOUNTER: /* rx error counter */
4470                 rc = card->stats.rx_errors;
4471                 break;
4472         case MII_SREVISION: /* silicon revision */
4473                 break;
4474         case MII_RESV1: /* reserved 1 */
4475                 break;
4476         case MII_LBRERROR: /* loopback, rx, bypass error */
4477                 break;
4478         case MII_PHYADDR: /* physical address */
4479                 break;
4480         case MII_RESV2: /* reserved 2 */
4481                 break;
4482         case MII_TPISTATUS: /* TPI status for 10mbps */
4483                 break;
4484         case MII_NCONFIG: /* network interface config */
4485                 break;
4486         default:
4487                 break;
4488         }
4489         return rc;
4490 }
4491
4492 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4493                 struct qeth_cmd_buffer *iob, int len,
4494                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4495                         unsigned long),
4496                 void *reply_param)
4497 {
4498         u16 s1, s2;
4499
4500         QETH_CARD_TEXT(card, 4, "sendsnmp");
4501
4502         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4503         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4504                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4505         /* adjust PDU length fields in IPA_PDU_HEADER */
4506         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4507         s2 = (u32) len;
4508         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4509         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4510         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4511         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4512         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4513                                       reply_cb, reply_param);
4514 }
4515
4516 static int qeth_snmp_command_cb(struct qeth_card *card,
4517                 struct qeth_reply *reply, unsigned long sdata)
4518 {
4519         struct qeth_ipa_cmd *cmd;
4520         struct qeth_arp_query_info *qinfo;
4521         unsigned char *data;
4522         void *snmp_data;
4523         __u16 data_len;
4524
4525         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4526
4527         cmd = (struct qeth_ipa_cmd *) sdata;
4528         data = (unsigned char *)((char *)cmd - reply->offset);
4529         qinfo = (struct qeth_arp_query_info *) reply->param;
4530
4531         if (cmd->hdr.return_code) {
4532                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4533                 return 0;
4534         }
4535         if (cmd->data.setadapterparms.hdr.return_code) {
4536                 cmd->hdr.return_code =
4537                         cmd->data.setadapterparms.hdr.return_code;
4538                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4539                 return 0;
4540         }
4541         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4542         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4543                 snmp_data = &cmd->data.setadapterparms.data.snmp;
4544                 data_len -= offsetof(struct qeth_ipa_cmd,
4545                                      data.setadapterparms.data.snmp);
4546         } else {
4547                 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4548                 data_len -= offsetof(struct qeth_ipa_cmd,
4549                                      data.setadapterparms.data.snmp.request);
4550         }
4551
4552         /* check if there is enough room in userspace */
4553         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4554                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4555                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4556                 return 0;
4557         }
4558         QETH_CARD_TEXT_(card, 4, "snore%i",
4559                        cmd->data.setadapterparms.hdr.used_total);
4560         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4561                 cmd->data.setadapterparms.hdr.seq_no);
4562         /*copy entries to user buffer*/
4563         memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4564         qinfo->udata_offset += data_len;
4565
4566         /* check if all replies received ... */
4567                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4568                                cmd->data.setadapterparms.hdr.used_total);
4569                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4570                                cmd->data.setadapterparms.hdr.seq_no);
4571         if (cmd->data.setadapterparms.hdr.seq_no <
4572             cmd->data.setadapterparms.hdr.used_total)
4573                 return 1;
4574         return 0;
4575 }
4576
4577 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4578 {
4579         struct qeth_cmd_buffer *iob;
4580         struct qeth_ipa_cmd *cmd;
4581         struct qeth_snmp_ureq *ureq;
4582         unsigned int req_len;
4583         struct qeth_arp_query_info qinfo = {0, };
4584         int rc = 0;
4585
4586         QETH_CARD_TEXT(card, 3, "snmpcmd");
4587
4588         if (card->info.guestlan)
4589                 return -EOPNOTSUPP;
4590
4591         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4592             IS_LAYER3(card))
4593                 return -EOPNOTSUPP;
4594
4595         /* skip 4 bytes (data_len struct member) to get req_len */
4596         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4597                 return -EFAULT;
4598         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4599                        sizeof(struct qeth_ipacmd_hdr) -
4600                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4601                 return -EINVAL;
4602         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4603         if (IS_ERR(ureq)) {
4604                 QETH_CARD_TEXT(card, 2, "snmpnome");
4605                 return PTR_ERR(ureq);
4606         }
4607         qinfo.udata_len = ureq->hdr.data_len;
4608         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4609         if (!qinfo.udata) {
4610                 kfree(ureq);
4611                 return -ENOMEM;
4612         }
4613         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4614
4615         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4616                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4617         if (!iob) {
4618                 rc = -ENOMEM;
4619                 goto out;
4620         }
4621         cmd = __ipa_cmd(iob);
4622         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4623         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4624                                     qeth_snmp_command_cb, (void *)&qinfo);
4625         if (rc)
4626                 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4627                                  CARD_DEVID(card), rc);
4628         else {
4629                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4630                         rc = -EFAULT;
4631         }
4632 out:
4633         kfree(ureq);
4634         kfree(qinfo.udata);
4635         return rc;
4636 }
4637
4638 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4639                 struct qeth_reply *reply, unsigned long data)
4640 {
4641         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4642         struct qeth_qoat_priv *priv;
4643         char *resdata;
4644         int resdatalen;
4645
4646         QETH_CARD_TEXT(card, 3, "qoatcb");
4647         if (qeth_setadpparms_inspect_rc(cmd))
4648                 return 0;
4649
4650         priv = (struct qeth_qoat_priv *)reply->param;
4651         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4652         resdata = (char *)data + 28;
4653
4654         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4655                 cmd->hdr.return_code = IPA_RC_FFFF;
4656                 return 0;
4657         }
4658
4659         memcpy((priv->buffer + priv->response_len), resdata,
4660                 resdatalen);
4661         priv->response_len += resdatalen;
4662
4663         if (cmd->data.setadapterparms.hdr.seq_no <
4664             cmd->data.setadapterparms.hdr.used_total)
4665                 return 1;
4666         return 0;
4667 }
4668
4669 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4670 {
4671         int rc = 0;
4672         struct qeth_cmd_buffer *iob;
4673         struct qeth_ipa_cmd *cmd;
4674         struct qeth_query_oat *oat_req;
4675         struct qeth_query_oat_data oat_data;
4676         struct qeth_qoat_priv priv;
4677         void __user *tmp;
4678
4679         QETH_CARD_TEXT(card, 3, "qoatcmd");
4680
4681         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4682                 rc = -EOPNOTSUPP;
4683                 goto out;
4684         }
4685
4686         if (copy_from_user(&oat_data, udata,
4687             sizeof(struct qeth_query_oat_data))) {
4688                         rc = -EFAULT;
4689                         goto out;
4690         }
4691
4692         priv.buffer_len = oat_data.buffer_len;
4693         priv.response_len = 0;
4694         priv.buffer = vzalloc(oat_data.buffer_len);
4695         if (!priv.buffer) {
4696                 rc = -ENOMEM;
4697                 goto out;
4698         }
4699
4700         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4701                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4702                                    sizeof(struct qeth_query_oat));
4703         if (!iob) {
4704                 rc = -ENOMEM;
4705                 goto out_free;
4706         }
4707         cmd = __ipa_cmd(iob);
4708         oat_req = &cmd->data.setadapterparms.data.query_oat;
4709         oat_req->subcmd_code = oat_data.command;
4710
4711         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4712                                &priv);
4713         if (!rc) {
4714                 if (is_compat_task())
4715                         tmp = compat_ptr(oat_data.ptr);
4716                 else
4717                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4718
4719                 if (copy_to_user(tmp, priv.buffer,
4720                     priv.response_len)) {
4721                         rc = -EFAULT;
4722                         goto out_free;
4723                 }
4724
4725                 oat_data.response_len = priv.response_len;
4726
4727                 if (copy_to_user(udata, &oat_data,
4728                     sizeof(struct qeth_query_oat_data)))
4729                         rc = -EFAULT;
4730         } else
4731                 if (rc == IPA_RC_FFFF)
4732                         rc = -EFAULT;
4733
4734 out_free:
4735         vfree(priv.buffer);
4736 out:
4737         return rc;
4738 }
4739
4740 static int qeth_query_card_info_cb(struct qeth_card *card,
4741                                    struct qeth_reply *reply, unsigned long data)
4742 {
4743         struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4744         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4745         struct qeth_query_card_info *card_info;
4746
4747         QETH_CARD_TEXT(card, 2, "qcrdincb");
4748         if (qeth_setadpparms_inspect_rc(cmd))
4749                 return 0;
4750
4751         card_info = &cmd->data.setadapterparms.data.card_info;
4752         carrier_info->card_type = card_info->card_type;
4753         carrier_info->port_mode = card_info->port_mode;
4754         carrier_info->port_speed = card_info->port_speed;
4755         return 0;
4756 }
4757
4758 static int qeth_query_card_info(struct qeth_card *card,
4759                                 struct carrier_info *carrier_info)
4760 {
4761         struct qeth_cmd_buffer *iob;
4762
4763         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4764         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4765                 return -EOPNOTSUPP;
4766         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4767                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4768         if (!iob)
4769                 return -ENOMEM;
4770         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4771                                         (void *)carrier_info);
4772 }
4773
4774 /**
4775  * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4776  * @card: pointer to a qeth_card
4777  *
4778  * Returns
4779  *      0, if a MAC address has been set for the card's netdevice
4780  *      a return code, for various error conditions
4781  */
4782 int qeth_vm_request_mac(struct qeth_card *card)
4783 {
4784         struct diag26c_mac_resp *response;
4785         struct diag26c_mac_req *request;
4786         struct ccw_dev_id id;
4787         int rc;
4788
4789         QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4790
4791         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4792         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4793         if (!request || !response) {
4794                 rc = -ENOMEM;
4795                 goto out;
4796         }
4797
4798         ccw_device_get_id(CARD_DDEV(card), &id);
4799         request->resp_buf_len = sizeof(*response);
4800         request->resp_version = DIAG26C_VERSION2;
4801         request->op_code = DIAG26C_GET_MAC;
4802         request->devno = id.devno;
4803
4804         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4805         rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4806         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4807         if (rc)
4808                 goto out;
4809         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4810
4811         if (request->resp_buf_len < sizeof(*response) ||
4812             response->version != request->resp_version) {
4813                 rc = -EIO;
4814                 QETH_DBF_TEXT(SETUP, 2, "badresp");
4815                 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4816                              sizeof(request->resp_buf_len));
4817         } else if (!is_valid_ether_addr(response->mac)) {
4818                 rc = -EINVAL;
4819                 QETH_DBF_TEXT(SETUP, 2, "badmac");
4820                 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4821         } else {
4822                 ether_addr_copy(card->dev->dev_addr, response->mac);
4823         }
4824
4825 out:
4826         kfree(response);
4827         kfree(request);
4828         return rc;
4829 }
4830 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4831
4832 static int qeth_get_qdio_q_format(struct qeth_card *card)
4833 {
4834         if (card->info.type == QETH_CARD_TYPE_IQD)
4835                 return QDIO_IQDIO_QFMT;
4836         else
4837                 return QDIO_QETH_QFMT;
4838 }
4839
4840 static void qeth_determine_capabilities(struct qeth_card *card)
4841 {
4842         int rc;
4843         int length;
4844         char *prcd;
4845         struct ccw_device *ddev;
4846         int ddev_offline = 0;
4847
4848         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4849         ddev = CARD_DDEV(card);
4850         if (!ddev->online) {
4851                 ddev_offline = 1;
4852                 rc = ccw_device_set_online(ddev);
4853                 if (rc) {
4854                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4855                         goto out;
4856                 }
4857         }
4858
4859         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4860         if (rc) {
4861                 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4862                                  CARD_DEVID(card), rc);
4863                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4864                 goto out_offline;
4865         }
4866         qeth_configure_unitaddr(card, prcd);
4867         if (ddev_offline)
4868                 qeth_configure_blkt_default(card, prcd);
4869         kfree(prcd);
4870
4871         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4872         if (rc)
4873                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4874
4875         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4876         QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4877         QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4878         QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4879         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4880         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4881             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4882             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4883                 dev_info(&card->gdev->dev,
4884                         "Completion Queueing supported\n");
4885         } else {
4886                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4887         }
4888
4889
4890 out_offline:
4891         if (ddev_offline == 1)
4892                 ccw_device_set_offline(ddev);
4893 out:
4894         return;
4895 }
4896
4897 static void qeth_qdio_establish_cq(struct qeth_card *card,
4898                                    struct qdio_buffer **in_sbal_ptrs,
4899                                    void (**queue_start_poll)
4900                                         (struct ccw_device *, int,
4901                                          unsigned long))
4902 {
4903         int i;
4904
4905         if (card->options.cq == QETH_CQ_ENABLED) {
4906                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4907                              (card->qdio.no_in_queues - 1);
4908                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4909                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4910                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4911                 }
4912
4913                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4914         }
4915 }
4916
4917 static int qeth_qdio_establish(struct qeth_card *card)
4918 {
4919         struct qdio_initialize init_data;
4920         char *qib_param_field;
4921         struct qdio_buffer **in_sbal_ptrs;
4922         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4923         struct qdio_buffer **out_sbal_ptrs;
4924         int i, j, k;
4925         int rc = 0;
4926
4927         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4928
4929         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4930                                   GFP_KERNEL);
4931         if (!qib_param_field) {
4932                 rc =  -ENOMEM;
4933                 goto out_free_nothing;
4934         }
4935
4936         qeth_create_qib_param_field(card, qib_param_field);
4937         qeth_create_qib_param_field_blkt(card, qib_param_field);
4938
4939         in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4940                                sizeof(void *),
4941                                GFP_KERNEL);
4942         if (!in_sbal_ptrs) {
4943                 rc = -ENOMEM;
4944                 goto out_free_qib_param;
4945         }
4946         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4947                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4948                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4949         }
4950
4951         queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4952                                    GFP_KERNEL);
4953         if (!queue_start_poll) {
4954                 rc = -ENOMEM;
4955                 goto out_free_in_sbals;
4956         }
4957         for (i = 0; i < card->qdio.no_in_queues; ++i)
4958                 queue_start_poll[i] = qeth_qdio_start_poll;
4959
4960         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4961
4962         out_sbal_ptrs =
4963                 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4964                         sizeof(void *),
4965                         GFP_KERNEL);
4966         if (!out_sbal_ptrs) {
4967                 rc = -ENOMEM;
4968                 goto out_free_queue_start_poll;
4969         }
4970         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4971                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4972                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4973                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4974                 }
4975
4976         memset(&init_data, 0, sizeof(struct qdio_initialize));
4977         init_data.cdev                   = CARD_DDEV(card);
4978         init_data.q_format               = qeth_get_qdio_q_format(card);
4979         init_data.qib_param_field_format = 0;
4980         init_data.qib_param_field        = qib_param_field;
4981         init_data.no_input_qs            = card->qdio.no_in_queues;
4982         init_data.no_output_qs           = card->qdio.no_out_queues;
4983         init_data.input_handler          = qeth_qdio_input_handler;
4984         init_data.output_handler         = qeth_qdio_output_handler;
4985         init_data.queue_start_poll_array = queue_start_poll;
4986         init_data.int_parm               = (unsigned long) card;
4987         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4988         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4989         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4990         init_data.scan_threshold =
4991                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4992
4993         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4994                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4995                 rc = qdio_allocate(&init_data);
4996                 if (rc) {
4997                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4998                         goto out;
4999                 }
5000                 rc = qdio_establish(&init_data);
5001                 if (rc) {
5002                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5003                         qdio_free(CARD_DDEV(card));
5004                 }
5005         }
5006
5007         switch (card->options.cq) {
5008         case QETH_CQ_ENABLED:
5009                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5010                 break;
5011         case QETH_CQ_DISABLED:
5012                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5013                 break;
5014         default:
5015                 break;
5016         }
5017 out:
5018         kfree(out_sbal_ptrs);
5019 out_free_queue_start_poll:
5020         kfree(queue_start_poll);
5021 out_free_in_sbals:
5022         kfree(in_sbal_ptrs);
5023 out_free_qib_param:
5024         kfree(qib_param_field);
5025 out_free_nothing:
5026         return rc;
5027 }
5028
5029 static void qeth_core_free_card(struct qeth_card *card)
5030 {
5031         QETH_DBF_TEXT(SETUP, 2, "freecrd");
5032         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5033         qeth_clean_channel(&card->read);
5034         qeth_clean_channel(&card->write);
5035         qeth_clean_channel(&card->data);
5036         qeth_free_qdio_buffers(card);
5037         unregister_service_level(&card->qeth_service_level);
5038         dev_set_drvdata(&card->gdev->dev, NULL);
5039         kfree(card);
5040 }
5041
5042 void qeth_trace_features(struct qeth_card *card)
5043 {
5044         QETH_CARD_TEXT(card, 2, "features");
5045         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5046         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5047         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5048         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5049                       sizeof(card->info.diagass_support));
5050 }
5051 EXPORT_SYMBOL_GPL(qeth_trace_features);
5052
5053 static struct ccw_device_id qeth_ids[] = {
5054         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5055                                         .driver_info = QETH_CARD_TYPE_OSD},
5056         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5057                                         .driver_info = QETH_CARD_TYPE_IQD},
5058         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5059                                         .driver_info = QETH_CARD_TYPE_OSN},
5060         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5061                                         .driver_info = QETH_CARD_TYPE_OSM},
5062         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5063                                         .driver_info = QETH_CARD_TYPE_OSX},
5064         {},
5065 };
5066 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5067
5068 static struct ccw_driver qeth_ccw_driver = {
5069         .driver = {
5070                 .owner = THIS_MODULE,
5071                 .name = "qeth",
5072         },
5073         .ids = qeth_ids,
5074         .probe = ccwgroup_probe_ccwdev,
5075         .remove = ccwgroup_remove_ccwdev,
5076 };
5077
5078 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5079 {
5080         int retries = 3;
5081         int rc;
5082
5083         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5084         atomic_set(&card->force_alloc_skb, 0);
5085         qeth_update_from_chp_desc(card);
5086 retry:
5087         if (retries < 3)
5088                 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5089                                  CARD_DEVID(card));
5090         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5091         ccw_device_set_offline(CARD_DDEV(card));
5092         ccw_device_set_offline(CARD_WDEV(card));
5093         ccw_device_set_offline(CARD_RDEV(card));
5094         qdio_free(CARD_DDEV(card));
5095         rc = ccw_device_set_online(CARD_RDEV(card));
5096         if (rc)
5097                 goto retriable;
5098         rc = ccw_device_set_online(CARD_WDEV(card));
5099         if (rc)
5100                 goto retriable;
5101         rc = ccw_device_set_online(CARD_DDEV(card));
5102         if (rc)
5103                 goto retriable;
5104 retriable:
5105         if (rc == -ERESTARTSYS) {
5106                 QETH_DBF_TEXT(SETUP, 2, "break1");
5107                 return rc;
5108         } else if (rc) {
5109                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5110                 if (--retries < 0)
5111                         goto out;
5112                 else
5113                         goto retry;
5114         }
5115         qeth_determine_capabilities(card);
5116         qeth_init_tokens(card);
5117         qeth_init_func_level(card);
5118         rc = qeth_idx_activate_channel(card, &card->read, qeth_idx_read_cb);
5119         if (rc == -ERESTARTSYS) {
5120                 QETH_DBF_TEXT(SETUP, 2, "break2");
5121                 return rc;
5122         } else if (rc) {
5123                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5124                 if (--retries < 0)
5125                         goto out;
5126                 else
5127                         goto retry;
5128         }
5129         rc = qeth_idx_activate_channel(card, &card->write, qeth_idx_write_cb);
5130         if (rc == -ERESTARTSYS) {
5131                 QETH_DBF_TEXT(SETUP, 2, "break3");
5132                 return rc;
5133         } else if (rc) {
5134                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5135                 if (--retries < 0)
5136                         goto out;
5137                 else
5138                         goto retry;
5139         }
5140         card->read_or_write_problem = 0;
5141         rc = qeth_mpc_initialize(card);
5142         if (rc) {
5143                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5144                 goto out;
5145         }
5146
5147         rc = qeth_send_startlan(card);
5148         if (rc) {
5149                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5150                 if (rc == IPA_RC_LAN_OFFLINE) {
5151                         dev_warn(&card->gdev->dev,
5152                                 "The LAN is offline\n");
5153                         *carrier_ok = false;
5154                 } else {
5155                         rc = -ENODEV;
5156                         goto out;
5157                 }
5158         } else {
5159                 *carrier_ok = true;
5160         }
5161
5162         if (qeth_netdev_is_registered(card->dev)) {
5163                 if (*carrier_ok)
5164                         netif_carrier_on(card->dev);
5165                 else
5166                         netif_carrier_off(card->dev);
5167         }
5168
5169         card->options.ipa4.supported_funcs = 0;
5170         card->options.ipa6.supported_funcs = 0;
5171         card->options.adp.supported_funcs = 0;
5172         card->options.sbp.supported_funcs = 0;
5173         card->info.diagass_support = 0;
5174         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5175         if (rc == -ENOMEM)
5176                 goto out;
5177         if (qeth_is_supported(card, IPA_IPV6)) {
5178                 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5179                 if (rc == -ENOMEM)
5180                         goto out;
5181         }
5182         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5183                 rc = qeth_query_setadapterparms(card);
5184                 if (rc < 0) {
5185                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5186                         goto out;
5187                 }
5188         }
5189         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5190                 rc = qeth_query_setdiagass(card);
5191                 if (rc < 0) {
5192                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5193                         goto out;
5194                 }
5195         }
5196         return 0;
5197 out:
5198         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5199                 "an error on the device\n");
5200         QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5201                          CARD_DEVID(card), rc);
5202         return rc;
5203 }
5204 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5205
5206 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5207                                  struct sk_buff *skb, int offset, int data_len)
5208 {
5209         struct page *page = virt_to_page(element->addr);
5210         unsigned int next_frag;
5211
5212         /* first fill the linear space */
5213         if (!skb->len) {
5214                 unsigned int linear = min(data_len, skb_tailroom(skb));
5215
5216                 skb_put_data(skb, element->addr + offset, linear);
5217                 data_len -= linear;
5218                 if (!data_len)
5219                         return;
5220                 offset += linear;
5221                 /* fall through to add page frag for remaining data */
5222         }
5223
5224         next_frag = skb_shinfo(skb)->nr_frags;
5225         get_page(page);
5226         skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5227 }
5228
5229 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5230 {
5231         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5232 }
5233
5234 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5235                 struct qeth_qdio_buffer *qethbuffer,
5236                 struct qdio_buffer_element **__element, int *__offset,
5237                 struct qeth_hdr **hdr)
5238 {
5239         struct qdio_buffer_element *element = *__element;
5240         struct qdio_buffer *buffer = qethbuffer->buffer;
5241         int offset = *__offset;
5242         struct sk_buff *skb;
5243         int skb_len = 0;
5244         void *data_ptr;
5245         int data_len;
5246         int headroom = 0;
5247         int use_rx_sg = 0;
5248
5249         /* qeth_hdr must not cross element boundaries */
5250         while (element->length < offset + sizeof(struct qeth_hdr)) {
5251                 if (qeth_is_last_sbale(element))
5252                         return NULL;
5253                 element++;
5254                 offset = 0;
5255         }
5256         *hdr = element->addr + offset;
5257
5258         offset += sizeof(struct qeth_hdr);
5259         switch ((*hdr)->hdr.l2.id) {
5260         case QETH_HEADER_TYPE_LAYER2:
5261                 skb_len = (*hdr)->hdr.l2.pkt_length;
5262                 break;
5263         case QETH_HEADER_TYPE_LAYER3:
5264                 skb_len = (*hdr)->hdr.l3.length;
5265                 headroom = ETH_HLEN;
5266                 break;
5267         case QETH_HEADER_TYPE_OSN:
5268                 skb_len = (*hdr)->hdr.osn.pdu_length;
5269                 headroom = sizeof(struct qeth_hdr);
5270                 break;
5271         default:
5272                 break;
5273         }
5274
5275         if (!skb_len)
5276                 return NULL;
5277
5278         if (((skb_len >= card->options.rx_sg_cb) &&
5279              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5280              (!atomic_read(&card->force_alloc_skb))) ||
5281             (card->options.cq == QETH_CQ_ENABLED))
5282                 use_rx_sg = 1;
5283
5284         if (use_rx_sg && qethbuffer->rx_skb) {
5285                 /* QETH_CQ_ENABLED only: */
5286                 skb = qethbuffer->rx_skb;
5287                 qethbuffer->rx_skb = NULL;
5288         } else {
5289                 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5290
5291                 skb = napi_alloc_skb(&card->napi, linear + headroom);
5292         }
5293         if (!skb)
5294                 goto no_mem;
5295         if (headroom)
5296                 skb_reserve(skb, headroom);
5297
5298         data_ptr = element->addr + offset;
5299         while (skb_len) {
5300                 data_len = min(skb_len, (int)(element->length - offset));
5301                 if (data_len) {
5302                         if (use_rx_sg)
5303                                 qeth_create_skb_frag(element, skb, offset,
5304                                                      data_len);
5305                         else
5306                                 skb_put_data(skb, data_ptr, data_len);
5307                 }
5308                 skb_len -= data_len;
5309                 if (skb_len) {
5310                         if (qeth_is_last_sbale(element)) {
5311                                 QETH_CARD_TEXT(card, 4, "unexeob");
5312                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5313                                 dev_kfree_skb_any(skb);
5314                                 card->stats.rx_errors++;
5315                                 return NULL;
5316                         }
5317                         element++;
5318                         offset = 0;
5319                         data_ptr = element->addr;
5320                 } else {
5321                         offset += data_len;
5322                 }
5323         }
5324         *__element = element;
5325         *__offset = offset;
5326         if (use_rx_sg && card->options.performance_stats) {
5327                 card->perf_stats.sg_skbs_rx++;
5328                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5329         }
5330         return skb;
5331 no_mem:
5332         if (net_ratelimit()) {
5333                 QETH_CARD_TEXT(card, 2, "noskbmem");
5334         }
5335         card->stats.rx_dropped++;
5336         return NULL;
5337 }
5338 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5339
5340 int qeth_poll(struct napi_struct *napi, int budget)
5341 {
5342         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5343         int work_done = 0;
5344         struct qeth_qdio_buffer *buffer;
5345         int done;
5346         int new_budget = budget;
5347
5348         if (card->options.performance_stats) {
5349                 card->perf_stats.inbound_cnt++;
5350                 card->perf_stats.inbound_start_time = qeth_get_micros();
5351         }
5352
5353         while (1) {
5354                 if (!card->rx.b_count) {
5355                         card->rx.qdio_err = 0;
5356                         card->rx.b_count = qdio_get_next_buffers(
5357                                 card->data.ccwdev, 0, &card->rx.b_index,
5358                                 &card->rx.qdio_err);
5359                         if (card->rx.b_count <= 0) {
5360                                 card->rx.b_count = 0;
5361                                 break;
5362                         }
5363                         card->rx.b_element =
5364                                 &card->qdio.in_q->bufs[card->rx.b_index]
5365                                 .buffer->element[0];
5366                         card->rx.e_offset = 0;
5367                 }
5368
5369                 while (card->rx.b_count) {
5370                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5371                         if (!(card->rx.qdio_err &&
5372                             qeth_check_qdio_errors(card, buffer->buffer,
5373                             card->rx.qdio_err, "qinerr")))
5374                                 work_done +=
5375                                         card->discipline->process_rx_buffer(
5376                                                 card, new_budget, &done);
5377                         else
5378                                 done = 1;
5379
5380                         if (done) {
5381                                 if (card->options.performance_stats)
5382                                         card->perf_stats.bufs_rec++;
5383                                 qeth_put_buffer_pool_entry(card,
5384                                         buffer->pool_entry);
5385                                 qeth_queue_input_buffer(card, card->rx.b_index);
5386                                 card->rx.b_count--;
5387                                 if (card->rx.b_count) {
5388                                         card->rx.b_index =
5389                                                 (card->rx.b_index + 1) %
5390                                                 QDIO_MAX_BUFFERS_PER_Q;
5391                                         card->rx.b_element =
5392                                                 &card->qdio.in_q
5393                                                 ->bufs[card->rx.b_index]
5394                                                 .buffer->element[0];
5395                                         card->rx.e_offset = 0;
5396                                 }
5397                         }
5398
5399                         if (work_done >= budget)
5400                                 goto out;
5401                         else
5402                                 new_budget = budget - work_done;
5403                 }
5404         }
5405
5406         napi_complete_done(napi, work_done);
5407         if (qdio_start_irq(card->data.ccwdev, 0))
5408                 napi_schedule(&card->napi);
5409 out:
5410         if (card->options.performance_stats)
5411                 card->perf_stats.inbound_time += qeth_get_micros() -
5412                         card->perf_stats.inbound_start_time;
5413         return work_done;
5414 }
5415 EXPORT_SYMBOL_GPL(qeth_poll);
5416
5417 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5418 {
5419         if (!cmd->hdr.return_code)
5420                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5421         return cmd->hdr.return_code;
5422 }
5423
5424 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5425                                         struct qeth_reply *reply,
5426                                         unsigned long data)
5427 {
5428         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5429         struct qeth_ipa_caps *caps = reply->param;
5430
5431         if (qeth_setassparms_inspect_rc(cmd))
5432                 return 0;
5433
5434         caps->supported = cmd->data.setassparms.data.caps.supported;
5435         caps->enabled = cmd->data.setassparms.data.caps.enabled;
5436         return 0;
5437 }
5438
5439 int qeth_setassparms_cb(struct qeth_card *card,
5440                         struct qeth_reply *reply, unsigned long data)
5441 {
5442         struct qeth_ipa_cmd *cmd;
5443
5444         QETH_CARD_TEXT(card, 4, "defadpcb");
5445
5446         cmd = (struct qeth_ipa_cmd *) data;
5447         if (cmd->hdr.return_code == 0) {
5448                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5449                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5450                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5451                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5452                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5453         }
5454         return 0;
5455 }
5456 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5457
5458 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5459                                                  enum qeth_ipa_funcs ipa_func,
5460                                                  __u16 cmd_code, __u16 len,
5461                                                  enum qeth_prot_versions prot)
5462 {
5463         struct qeth_cmd_buffer *iob;
5464         struct qeth_ipa_cmd *cmd;
5465
5466         QETH_CARD_TEXT(card, 4, "getasscm");
5467         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5468
5469         if (iob) {
5470                 cmd = __ipa_cmd(iob);
5471                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5472                 cmd->data.setassparms.hdr.length = 8 + len;
5473                 cmd->data.setassparms.hdr.command_code = cmd_code;
5474         }
5475
5476         return iob;
5477 }
5478 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5479
5480 static int qeth_send_setassparms(struct qeth_card *card,
5481                                  struct qeth_cmd_buffer *iob, u16 len,
5482                                  long data, int (*reply_cb)(struct qeth_card *,
5483                                                             struct qeth_reply *,
5484                                                             unsigned long),
5485                                  void *reply_param)
5486 {
5487         int rc;
5488         struct qeth_ipa_cmd *cmd;
5489
5490         QETH_CARD_TEXT(card, 4, "sendassp");
5491
5492         cmd = __ipa_cmd(iob);
5493         if (len <= sizeof(__u32))
5494                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5495         else   /* (len > sizeof(__u32)) */
5496                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5497
5498         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5499         return rc;
5500 }
5501
5502 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5503                                       enum qeth_ipa_funcs ipa_func,
5504                                       u16 cmd_code, long data,
5505                                       enum qeth_prot_versions prot)
5506 {
5507         int rc;
5508         int length = 0;
5509         struct qeth_cmd_buffer *iob;
5510
5511         QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5512         if (data)
5513                 length = sizeof(__u32);
5514         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5515         if (!iob)
5516                 return -ENOMEM;
5517         rc = qeth_send_setassparms(card, iob, length, data,
5518                                    qeth_setassparms_cb, NULL);
5519         return rc;
5520 }
5521 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5522
5523 static void qeth_unregister_dbf_views(void)
5524 {
5525         int x;
5526         for (x = 0; x < QETH_DBF_INFOS; x++) {
5527                 debug_unregister(qeth_dbf[x].id);
5528                 qeth_dbf[x].id = NULL;
5529         }
5530 }
5531
5532 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5533 {
5534         char dbf_txt_buf[32];
5535         va_list args;
5536
5537         if (!debug_level_enabled(id, level))
5538                 return;
5539         va_start(args, fmt);
5540         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5541         va_end(args);
5542         debug_text_event(id, level, dbf_txt_buf);
5543 }
5544 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5545
5546 static int qeth_register_dbf_views(void)
5547 {
5548         int ret;
5549         int x;
5550
5551         for (x = 0; x < QETH_DBF_INFOS; x++) {
5552                 /* register the areas */
5553                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5554                                                 qeth_dbf[x].pages,
5555                                                 qeth_dbf[x].areas,
5556                                                 qeth_dbf[x].len);
5557                 if (qeth_dbf[x].id == NULL) {
5558                         qeth_unregister_dbf_views();
5559                         return -ENOMEM;
5560                 }
5561
5562                 /* register a view */
5563                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5564                 if (ret) {
5565                         qeth_unregister_dbf_views();
5566                         return ret;
5567                 }
5568
5569                 /* set a passing level */
5570                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5571         }
5572
5573         return 0;
5574 }
5575
5576 static DEFINE_MUTEX(qeth_mod_mutex);    /* for synchronized module loading */
5577
5578 int qeth_core_load_discipline(struct qeth_card *card,
5579                 enum qeth_discipline_id discipline)
5580 {
5581         mutex_lock(&qeth_mod_mutex);
5582         switch (discipline) {
5583         case QETH_DISCIPLINE_LAYER3:
5584                 card->discipline = try_then_request_module(
5585                         symbol_get(qeth_l3_discipline), "qeth_l3");
5586                 break;
5587         case QETH_DISCIPLINE_LAYER2:
5588                 card->discipline = try_then_request_module(
5589                         symbol_get(qeth_l2_discipline), "qeth_l2");
5590                 break;
5591         default:
5592                 break;
5593         }
5594         mutex_unlock(&qeth_mod_mutex);
5595
5596         if (!card->discipline) {
5597                 dev_err(&card->gdev->dev, "There is no kernel module to "
5598                         "support discipline %d\n", discipline);
5599                 return -EINVAL;
5600         }
5601
5602         card->options.layer = discipline;
5603         return 0;
5604 }
5605
5606 void qeth_core_free_discipline(struct qeth_card *card)
5607 {
5608         if (IS_LAYER2(card))
5609                 symbol_put(qeth_l2_discipline);
5610         else
5611                 symbol_put(qeth_l3_discipline);
5612         card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
5613         card->discipline = NULL;
5614 }
5615
5616 const struct device_type qeth_generic_devtype = {
5617         .name = "qeth_generic",
5618         .groups = qeth_generic_attr_groups,
5619 };
5620 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5621
5622 static const struct device_type qeth_osn_devtype = {
5623         .name = "qeth_osn",
5624         .groups = qeth_osn_attr_groups,
5625 };
5626
5627 #define DBF_NAME_LEN    20
5628
5629 struct qeth_dbf_entry {
5630         char dbf_name[DBF_NAME_LEN];
5631         debug_info_t *dbf_info;
5632         struct list_head dbf_list;
5633 };
5634
5635 static LIST_HEAD(qeth_dbf_list);
5636 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5637
5638 static debug_info_t *qeth_get_dbf_entry(char *name)
5639 {
5640         struct qeth_dbf_entry *entry;
5641         debug_info_t *rc = NULL;
5642
5643         mutex_lock(&qeth_dbf_list_mutex);
5644         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5645                 if (strcmp(entry->dbf_name, name) == 0) {
5646                         rc = entry->dbf_info;
5647                         break;
5648                 }
5649         }
5650         mutex_unlock(&qeth_dbf_list_mutex);
5651         return rc;
5652 }
5653
5654 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5655 {
5656         struct qeth_dbf_entry *new_entry;
5657
5658         card->debug = debug_register(name, 2, 1, 8);
5659         if (!card->debug) {
5660                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5661                 goto err;
5662         }
5663         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5664                 goto err_dbg;
5665         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5666         if (!new_entry)
5667                 goto err_dbg;
5668         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5669         new_entry->dbf_info = card->debug;
5670         mutex_lock(&qeth_dbf_list_mutex);
5671         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5672         mutex_unlock(&qeth_dbf_list_mutex);
5673
5674         return 0;
5675
5676 err_dbg:
5677         debug_unregister(card->debug);
5678 err:
5679         return -ENOMEM;
5680 }
5681
5682 static void qeth_clear_dbf_list(void)
5683 {
5684         struct qeth_dbf_entry *entry, *tmp;
5685
5686         mutex_lock(&qeth_dbf_list_mutex);
5687         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5688                 list_del(&entry->dbf_list);
5689                 debug_unregister(entry->dbf_info);
5690                 kfree(entry);
5691         }
5692         mutex_unlock(&qeth_dbf_list_mutex);
5693 }
5694
5695 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5696 {
5697         struct net_device *dev;
5698
5699         switch (card->info.type) {
5700         case QETH_CARD_TYPE_IQD:
5701                 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup);
5702                 break;
5703         case QETH_CARD_TYPE_OSN:
5704                 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5705                 break;
5706         default:
5707                 dev = alloc_etherdev(0);
5708         }
5709
5710         if (!dev)
5711                 return NULL;
5712
5713         dev->ml_priv = card;
5714         dev->watchdog_timeo = QETH_TX_TIMEOUT;
5715         dev->min_mtu = IS_OSN(card) ? 64 : 576;
5716          /* initialized when device first goes online: */
5717         dev->max_mtu = 0;
5718         dev->mtu = 0;
5719         SET_NETDEV_DEV(dev, &card->gdev->dev);
5720         netif_carrier_off(dev);
5721
5722         if (!IS_OSN(card)) {
5723                 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5724                 dev->hw_features |= NETIF_F_SG;
5725                 dev->vlan_features |= NETIF_F_SG;
5726                 if (IS_IQD(card))
5727                         dev->features |= NETIF_F_SG;
5728         }
5729
5730         return dev;
5731 }
5732
5733 struct net_device *qeth_clone_netdev(struct net_device *orig)
5734 {
5735         struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5736
5737         if (!clone)
5738                 return NULL;
5739
5740         clone->dev_port = orig->dev_port;
5741         return clone;
5742 }
5743
5744 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5745 {
5746         struct qeth_card *card;
5747         struct device *dev;
5748         int rc;
5749         enum qeth_discipline_id enforced_disc;
5750         char dbf_name[DBF_NAME_LEN];
5751
5752         QETH_DBF_TEXT(SETUP, 2, "probedev");
5753
5754         dev = &gdev->dev;
5755         if (!get_device(dev))
5756                 return -ENODEV;
5757
5758         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5759
5760         card = qeth_alloc_card(gdev);
5761         if (!card) {
5762                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5763                 rc = -ENOMEM;
5764                 goto err_dev;
5765         }
5766
5767         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5768                 dev_name(&gdev->dev));
5769         card->debug = qeth_get_dbf_entry(dbf_name);
5770         if (!card->debug) {
5771                 rc = qeth_add_dbf_entry(card, dbf_name);
5772                 if (rc)
5773                         goto err_card;
5774         }
5775
5776         qeth_setup_card(card);
5777         qeth_update_from_chp_desc(card);
5778
5779         card->dev = qeth_alloc_netdev(card);
5780         if (!card->dev) {
5781                 rc = -ENOMEM;
5782                 goto err_card;
5783         }
5784
5785         qeth_determine_capabilities(card);
5786         enforced_disc = qeth_enforce_discipline(card);
5787         switch (enforced_disc) {
5788         case QETH_DISCIPLINE_UNDETERMINED:
5789                 gdev->dev.type = &qeth_generic_devtype;
5790                 break;
5791         default:
5792                 card->info.layer_enforced = true;
5793                 rc = qeth_core_load_discipline(card, enforced_disc);
5794                 if (rc)
5795                         goto err_load;
5796
5797                 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5798                                         ? card->discipline->devtype
5799                                         : &qeth_osn_devtype;
5800                 rc = card->discipline->setup(card->gdev);
5801                 if (rc)
5802                         goto err_disc;
5803                 break;
5804         }
5805
5806         write_lock_irq(&qeth_core_card_list.rwlock);
5807         list_add_tail(&card->list, &qeth_core_card_list.list);
5808         write_unlock_irq(&qeth_core_card_list.rwlock);
5809         return 0;
5810
5811 err_disc:
5812         qeth_core_free_discipline(card);
5813 err_load:
5814         free_netdev(card->dev);
5815 err_card:
5816         qeth_core_free_card(card);
5817 err_dev:
5818         put_device(dev);
5819         return rc;
5820 }
5821
5822 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5823 {
5824         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5825
5826         QETH_DBF_TEXT(SETUP, 2, "removedv");
5827
5828         if (card->discipline) {
5829                 card->discipline->remove(gdev);
5830                 qeth_core_free_discipline(card);
5831         }
5832
5833         write_lock_irq(&qeth_core_card_list.rwlock);
5834         list_del(&card->list);
5835         write_unlock_irq(&qeth_core_card_list.rwlock);
5836         free_netdev(card->dev);
5837         qeth_core_free_card(card);
5838         put_device(&gdev->dev);
5839 }
5840
5841 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5842 {
5843         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5844         int rc = 0;
5845         enum qeth_discipline_id def_discipline;
5846
5847         if (!card->discipline) {
5848                 if (card->info.type == QETH_CARD_TYPE_IQD)
5849                         def_discipline = QETH_DISCIPLINE_LAYER3;
5850                 else
5851                         def_discipline = QETH_DISCIPLINE_LAYER2;
5852                 rc = qeth_core_load_discipline(card, def_discipline);
5853                 if (rc)
5854                         goto err;
5855                 rc = card->discipline->setup(card->gdev);
5856                 if (rc) {
5857                         qeth_core_free_discipline(card);
5858                         goto err;
5859                 }
5860         }
5861         rc = card->discipline->set_online(gdev);
5862 err:
5863         return rc;
5864 }
5865
5866 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5867 {
5868         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5869         return card->discipline->set_offline(gdev);
5870 }
5871
5872 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5873 {
5874         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5875         qeth_set_allowed_threads(card, 0, 1);
5876         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5877                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5878         qeth_qdio_clear_card(card, 0);
5879         qeth_clear_qdio_buffers(card);
5880         qdio_free(CARD_DDEV(card));
5881 }
5882
5883 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5884 {
5885         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5886         if (card->discipline && card->discipline->freeze)
5887                 return card->discipline->freeze(gdev);
5888         return 0;
5889 }
5890
5891 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5892 {
5893         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5894         if (card->discipline && card->discipline->thaw)
5895                 return card->discipline->thaw(gdev);
5896         return 0;
5897 }
5898
5899 static int qeth_core_restore(struct ccwgroup_device *gdev)
5900 {
5901         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5902         if (card->discipline && card->discipline->restore)
5903                 return card->discipline->restore(gdev);
5904         return 0;
5905 }
5906
5907 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5908                            size_t count)
5909 {
5910         int err;
5911
5912         err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5913                                   buf);
5914
5915         return err ? err : count;
5916 }
5917 static DRIVER_ATTR_WO(group);
5918
5919 static struct attribute *qeth_drv_attrs[] = {
5920         &driver_attr_group.attr,
5921         NULL,
5922 };
5923 static struct attribute_group qeth_drv_attr_group = {
5924         .attrs = qeth_drv_attrs,
5925 };
5926 static const struct attribute_group *qeth_drv_attr_groups[] = {
5927         &qeth_drv_attr_group,
5928         NULL,
5929 };
5930
5931 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5932         .driver = {
5933                 .groups = qeth_drv_attr_groups,
5934                 .owner = THIS_MODULE,
5935                 .name = "qeth",
5936         },
5937         .ccw_driver = &qeth_ccw_driver,
5938         .setup = qeth_core_probe_device,
5939         .remove = qeth_core_remove_device,
5940         .set_online = qeth_core_set_online,
5941         .set_offline = qeth_core_set_offline,
5942         .shutdown = qeth_core_shutdown,
5943         .prepare = NULL,
5944         .complete = NULL,
5945         .freeze = qeth_core_freeze,
5946         .thaw = qeth_core_thaw,
5947         .restore = qeth_core_restore,
5948 };
5949
5950 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5951 {
5952         struct qeth_card *card = dev->ml_priv;
5953         struct mii_ioctl_data *mii_data;
5954         int rc = 0;
5955
5956         if (!card)
5957                 return -ENODEV;
5958
5959         if (!qeth_card_hw_is_reachable(card))
5960                 return -ENODEV;
5961
5962         if (card->info.type == QETH_CARD_TYPE_OSN)
5963                 return -EPERM;
5964
5965         switch (cmd) {
5966         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5967                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5968                 break;
5969         case SIOC_QETH_GET_CARD_TYPE:
5970                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5971                      card->info.type == QETH_CARD_TYPE_OSM ||
5972                      card->info.type == QETH_CARD_TYPE_OSX) &&
5973                     !card->info.guestlan)
5974                         return 1;
5975                 else
5976                         return 0;
5977         case SIOCGMIIPHY:
5978                 mii_data = if_mii(rq);
5979                 mii_data->phy_id = 0;
5980                 break;
5981         case SIOCGMIIREG:
5982                 mii_data = if_mii(rq);
5983                 if (mii_data->phy_id != 0)
5984                         rc = -EINVAL;
5985                 else
5986                         mii_data->val_out = qeth_mdio_read(dev,
5987                                 mii_data->phy_id, mii_data->reg_num);
5988                 break;
5989         case SIOC_QETH_QUERY_OAT:
5990                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5991                 break;
5992         default:
5993                 if (card->discipline->do_ioctl)
5994                         rc = card->discipline->do_ioctl(dev, rq, cmd);
5995                 else
5996                         rc = -EOPNOTSUPP;
5997         }
5998         if (rc)
5999                 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6000         return rc;
6001 }
6002 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6003
6004 static struct {
6005         const char str[ETH_GSTRING_LEN];
6006 } qeth_ethtool_stats_keys[] = {
6007 /*  0 */{"rx skbs"},
6008         {"rx buffers"},
6009         {"tx skbs"},
6010         {"tx buffers"},
6011         {"tx skbs no packing"},
6012         {"tx buffers no packing"},
6013         {"tx skbs packing"},
6014         {"tx buffers packing"},
6015         {"tx sg skbs"},
6016         {"tx buffer elements"},
6017 /* 10 */{"rx sg skbs"},
6018         {"rx sg frags"},
6019         {"rx sg page allocs"},
6020         {"tx large kbytes"},
6021         {"tx large count"},
6022         {"tx pk state ch n->p"},
6023         {"tx pk state ch p->n"},
6024         {"tx pk watermark low"},
6025         {"tx pk watermark high"},
6026         {"queue 0 buffer usage"},
6027 /* 20 */{"queue 1 buffer usage"},
6028         {"queue 2 buffer usage"},
6029         {"queue 3 buffer usage"},
6030         {"rx poll time"},
6031         {"rx poll count"},
6032         {"rx do_QDIO time"},
6033         {"rx do_QDIO count"},
6034         {"tx handler time"},
6035         {"tx handler count"},
6036         {"tx time"},
6037 /* 30 */{"tx count"},
6038         {"tx do_QDIO time"},
6039         {"tx do_QDIO count"},
6040         {"tx csum"},
6041         {"tx lin"},
6042         {"tx linfail"},
6043         {"cq handler count"},
6044         {"cq handler time"},
6045         {"rx csum"}
6046 };
6047
6048 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6049 {
6050         switch (stringset) {
6051         case ETH_SS_STATS:
6052                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6053         default:
6054                 return -EINVAL;
6055         }
6056 }
6057 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6058
6059 void qeth_core_get_ethtool_stats(struct net_device *dev,
6060                 struct ethtool_stats *stats, u64 *data)
6061 {
6062         struct qeth_card *card = dev->ml_priv;
6063         data[0] = card->stats.rx_packets -
6064                                 card->perf_stats.initial_rx_packets;
6065         data[1] = card->perf_stats.bufs_rec;
6066         data[2] = card->stats.tx_packets -
6067                                 card->perf_stats.initial_tx_packets;
6068         data[3] = card->perf_stats.bufs_sent;
6069         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6070                         - card->perf_stats.skbs_sent_pack;
6071         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6072         data[6] = card->perf_stats.skbs_sent_pack;
6073         data[7] = card->perf_stats.bufs_sent_pack;
6074         data[8] = card->perf_stats.sg_skbs_sent;
6075         data[9] = card->perf_stats.buf_elements_sent;
6076         data[10] = card->perf_stats.sg_skbs_rx;
6077         data[11] = card->perf_stats.sg_frags_rx;
6078         data[12] = card->perf_stats.sg_alloc_page_rx;
6079         data[13] = (card->perf_stats.large_send_bytes >> 10);
6080         data[14] = card->perf_stats.large_send_cnt;
6081         data[15] = card->perf_stats.sc_dp_p;
6082         data[16] = card->perf_stats.sc_p_dp;
6083         data[17] = QETH_LOW_WATERMARK_PACK;
6084         data[18] = QETH_HIGH_WATERMARK_PACK;
6085         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6086         data[20] = (card->qdio.no_out_queues > 1) ?
6087                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6088         data[21] = (card->qdio.no_out_queues > 2) ?
6089                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6090         data[22] = (card->qdio.no_out_queues > 3) ?
6091                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6092         data[23] = card->perf_stats.inbound_time;
6093         data[24] = card->perf_stats.inbound_cnt;
6094         data[25] = card->perf_stats.inbound_do_qdio_time;
6095         data[26] = card->perf_stats.inbound_do_qdio_cnt;
6096         data[27] = card->perf_stats.outbound_handler_time;
6097         data[28] = card->perf_stats.outbound_handler_cnt;
6098         data[29] = card->perf_stats.outbound_time;
6099         data[30] = card->perf_stats.outbound_cnt;
6100         data[31] = card->perf_stats.outbound_do_qdio_time;
6101         data[32] = card->perf_stats.outbound_do_qdio_cnt;
6102         data[33] = card->perf_stats.tx_csum;
6103         data[34] = card->perf_stats.tx_lin;
6104         data[35] = card->perf_stats.tx_linfail;
6105         data[36] = card->perf_stats.cq_cnt;
6106         data[37] = card->perf_stats.cq_time;
6107         data[38] = card->perf_stats.rx_csum;
6108 }
6109 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6110
6111 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6112 {
6113         switch (stringset) {
6114         case ETH_SS_STATS:
6115                 memcpy(data, &qeth_ethtool_stats_keys,
6116                         sizeof(qeth_ethtool_stats_keys));
6117                 break;
6118         default:
6119                 WARN_ON(1);
6120                 break;
6121         }
6122 }
6123 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6124
6125 void qeth_core_get_drvinfo(struct net_device *dev,
6126                 struct ethtool_drvinfo *info)
6127 {
6128         struct qeth_card *card = dev->ml_priv;
6129
6130         strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
6131                 sizeof(info->driver));
6132         strlcpy(info->version, "1.0", sizeof(info->version));
6133         strlcpy(info->fw_version, card->info.mcl_level,
6134                 sizeof(info->fw_version));
6135         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6136                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6137 }
6138 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6139
6140 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6141 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
6142 /* Always advertise and support all speeds up to specified, and only one     */
6143 /* specified port type.                                                      */
6144 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6145                                 int maxspeed, int porttype)
6146 {
6147         ethtool_link_ksettings_zero_link_mode(cmd, supported);
6148         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6149         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6150
6151         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6152         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6153
6154         switch (porttype) {
6155         case PORT_TP:
6156                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6157                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6158                 break;
6159         case PORT_FIBRE:
6160                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6161                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6162                 break;
6163         default:
6164                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6165                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6166                 WARN_ON_ONCE(1);
6167         }
6168
6169         /* partially does fall through, to also select lower speeds */
6170         switch (maxspeed) {
6171         case SPEED_25000:
6172                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6173                                                      25000baseSR_Full);
6174                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6175                                                      25000baseSR_Full);
6176                 break;
6177         case SPEED_10000:
6178                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6179                                                      10000baseT_Full);
6180                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6181                                                      10000baseT_Full);
6182         case SPEED_1000:
6183                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6184                                                      1000baseT_Full);
6185                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6186                                                      1000baseT_Full);
6187                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6188                                                      1000baseT_Half);
6189                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6190                                                      1000baseT_Half);
6191         case SPEED_100:
6192                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6193                                                      100baseT_Full);
6194                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6195                                                      100baseT_Full);
6196                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6197                                                      100baseT_Half);
6198                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6199                                                      100baseT_Half);
6200         case SPEED_10:
6201                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6202                                                      10baseT_Full);
6203                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6204                                                      10baseT_Full);
6205                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6206                                                      10baseT_Half);
6207                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6208                                                      10baseT_Half);
6209                 /* end fallthrough */
6210                 break;
6211         default:
6212                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6213                                                      10baseT_Full);
6214                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6215                                                      10baseT_Full);
6216                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6217                                                      10baseT_Half);
6218                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6219                                                      10baseT_Half);
6220                 WARN_ON_ONCE(1);
6221         }
6222 }
6223
6224 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6225                 struct ethtool_link_ksettings *cmd)
6226 {
6227         struct qeth_card *card = netdev->ml_priv;
6228         enum qeth_link_types link_type;
6229         struct carrier_info carrier_info;
6230         int rc;
6231
6232         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6233                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6234         else
6235                 link_type = card->info.link_type;
6236
6237         cmd->base.duplex = DUPLEX_FULL;
6238         cmd->base.autoneg = AUTONEG_ENABLE;
6239         cmd->base.phy_address = 0;
6240         cmd->base.mdio_support = 0;
6241         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6242         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6243
6244         switch (link_type) {
6245         case QETH_LINK_TYPE_FAST_ETH:
6246         case QETH_LINK_TYPE_LANE_ETH100:
6247                 cmd->base.speed = SPEED_100;
6248                 cmd->base.port = PORT_TP;
6249                 break;
6250         case QETH_LINK_TYPE_GBIT_ETH:
6251         case QETH_LINK_TYPE_LANE_ETH1000:
6252                 cmd->base.speed = SPEED_1000;
6253                 cmd->base.port = PORT_FIBRE;
6254                 break;
6255         case QETH_LINK_TYPE_10GBIT_ETH:
6256                 cmd->base.speed = SPEED_10000;
6257                 cmd->base.port = PORT_FIBRE;
6258                 break;
6259         case QETH_LINK_TYPE_25GBIT_ETH:
6260                 cmd->base.speed = SPEED_25000;
6261                 cmd->base.port = PORT_FIBRE;
6262                 break;
6263         default:
6264                 cmd->base.speed = SPEED_10;
6265                 cmd->base.port = PORT_TP;
6266         }
6267         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6268
6269         /* Check if we can obtain more accurate information.     */
6270         /* If QUERY_CARD_INFO command is not supported or fails, */
6271         /* just return the heuristics that was filled above.     */
6272         if (!qeth_card_hw_is_reachable(card))
6273                 return -ENODEV;
6274         rc = qeth_query_card_info(card, &carrier_info);
6275         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6276                 return 0;
6277         if (rc) /* report error from the hardware operation */
6278                 return rc;
6279         /* on success, fill in the information got from the hardware */
6280
6281         netdev_dbg(netdev,
6282         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6283                         carrier_info.card_type,
6284                         carrier_info.port_mode,
6285                         carrier_info.port_speed);
6286
6287         /* Update attributes for which we've obtained more authoritative */
6288         /* information, leave the rest the way they where filled above.  */
6289         switch (carrier_info.card_type) {
6290         case CARD_INFO_TYPE_1G_COPPER_A:
6291         case CARD_INFO_TYPE_1G_COPPER_B:
6292                 cmd->base.port = PORT_TP;
6293                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6294                 break;
6295         case CARD_INFO_TYPE_1G_FIBRE_A:
6296         case CARD_INFO_TYPE_1G_FIBRE_B:
6297                 cmd->base.port = PORT_FIBRE;
6298                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6299                 break;
6300         case CARD_INFO_TYPE_10G_FIBRE_A:
6301         case CARD_INFO_TYPE_10G_FIBRE_B:
6302                 cmd->base.port = PORT_FIBRE;
6303                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6304                 break;
6305         }
6306
6307         switch (carrier_info.port_mode) {
6308         case CARD_INFO_PORTM_FULLDUPLEX:
6309                 cmd->base.duplex = DUPLEX_FULL;
6310                 break;
6311         case CARD_INFO_PORTM_HALFDUPLEX:
6312                 cmd->base.duplex = DUPLEX_HALF;
6313                 break;
6314         }
6315
6316         switch (carrier_info.port_speed) {
6317         case CARD_INFO_PORTS_10M:
6318                 cmd->base.speed = SPEED_10;
6319                 break;
6320         case CARD_INFO_PORTS_100M:
6321                 cmd->base.speed = SPEED_100;
6322                 break;
6323         case CARD_INFO_PORTS_1G:
6324                 cmd->base.speed = SPEED_1000;
6325                 break;
6326         case CARD_INFO_PORTS_10G:
6327                 cmd->base.speed = SPEED_10000;
6328                 break;
6329         case CARD_INFO_PORTS_25G:
6330                 cmd->base.speed = SPEED_25000;
6331                 break;
6332         }
6333
6334         return 0;
6335 }
6336 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6337
6338 /* Callback to handle checksum offload command reply from OSA card.
6339  * Verify that required features have been enabled on the card.
6340  * Return error in hdr->return_code as this value is checked by caller.
6341  *
6342  * Always returns zero to indicate no further messages from the OSA card.
6343  */
6344 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6345                                         struct qeth_reply *reply,
6346                                         unsigned long data)
6347 {
6348         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6349         struct qeth_checksum_cmd *chksum_cb =
6350                                 (struct qeth_checksum_cmd *)reply->param;
6351
6352         QETH_CARD_TEXT(card, 4, "chkdoccb");
6353         if (qeth_setassparms_inspect_rc(cmd))
6354                 return 0;
6355
6356         memset(chksum_cb, 0, sizeof(*chksum_cb));
6357         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6358                 chksum_cb->supported =
6359                                 cmd->data.setassparms.data.chksum.supported;
6360                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6361         }
6362         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6363                 chksum_cb->supported =
6364                                 cmd->data.setassparms.data.chksum.supported;
6365                 chksum_cb->enabled =
6366                                 cmd->data.setassparms.data.chksum.enabled;
6367                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6368                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6369         }
6370         return 0;
6371 }
6372
6373 /* Send command to OSA card and check results. */
6374 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6375                                      enum qeth_ipa_funcs ipa_func,
6376                                      __u16 cmd_code, long data,
6377                                      struct qeth_checksum_cmd *chksum_cb,
6378                                      enum qeth_prot_versions prot)
6379 {
6380         struct qeth_cmd_buffer *iob;
6381         int rc = -ENOMEM;
6382
6383         QETH_CARD_TEXT(card, 4, "chkdocmd");
6384         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6385                                        sizeof(__u32), prot);
6386         if (iob)
6387                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6388                                            qeth_ipa_checksum_run_cmd_cb,
6389                                            chksum_cb);
6390         return rc;
6391 }
6392
6393 static int qeth_send_checksum_on(struct qeth_card *card, int cstype,
6394                                  enum qeth_prot_versions prot)
6395 {
6396         u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6397         struct qeth_checksum_cmd chksum_cb;
6398         int rc;
6399
6400         if (prot == QETH_PROT_IPV4)
6401                 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6402         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6403                                        &chksum_cb, prot);
6404         if (!rc) {
6405                 if ((required_features & chksum_cb.supported) !=
6406                     required_features)
6407                         rc = -EIO;
6408                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6409                          cstype == IPA_INBOUND_CHECKSUM)
6410                         dev_warn(&card->gdev->dev,
6411                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6412                                  QETH_CARD_IFNAME(card));
6413         }
6414         if (rc) {
6415                 qeth_send_simple_setassparms_prot(card, cstype,
6416                                                   IPA_CMD_ASS_STOP, 0, prot);
6417                 dev_warn(&card->gdev->dev,
6418                          "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n",
6419                          prot, QETH_CARD_IFNAME(card));
6420                 return rc;
6421         }
6422         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6423                                        chksum_cb.supported, &chksum_cb,
6424                                        prot);
6425         if (!rc) {
6426                 if ((required_features & chksum_cb.enabled) !=
6427                     required_features)
6428                         rc = -EIO;
6429         }
6430         if (rc) {
6431                 qeth_send_simple_setassparms_prot(card, cstype,
6432                                                   IPA_CMD_ASS_STOP, 0, prot);
6433                 dev_warn(&card->gdev->dev,
6434                          "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n",
6435                          prot, QETH_CARD_IFNAME(card));
6436                 return rc;
6437         }
6438
6439         dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6440                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6441         return 0;
6442 }
6443
6444 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6445                              enum qeth_prot_versions prot)
6446 {
6447         int rc = (on) ? qeth_send_checksum_on(card, cstype, prot)
6448                       : qeth_send_simple_setassparms_prot(card, cstype,
6449                                                           IPA_CMD_ASS_STOP, 0,
6450                                                           prot);
6451         return rc ? -EIO : 0;
6452 }
6453
6454 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6455                              unsigned long data)
6456 {
6457         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6458         struct qeth_tso_start_data *tso_data = reply->param;
6459
6460         if (qeth_setassparms_inspect_rc(cmd))
6461                 return 0;
6462
6463         tso_data->mss = cmd->data.setassparms.data.tso.mss;
6464         tso_data->supported = cmd->data.setassparms.data.tso.supported;
6465         return 0;
6466 }
6467
6468 static int qeth_set_tso_off(struct qeth_card *card,
6469                             enum qeth_prot_versions prot)
6470 {
6471         return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6472                                                  IPA_CMD_ASS_STOP, 0, prot);
6473 }
6474
6475 static int qeth_set_tso_on(struct qeth_card *card,
6476                            enum qeth_prot_versions prot)
6477 {
6478         struct qeth_tso_start_data tso_data;
6479         struct qeth_cmd_buffer *iob;
6480         struct qeth_ipa_caps caps;
6481         int rc;
6482
6483         iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6484                                        IPA_CMD_ASS_START, 0, prot);
6485         if (!iob)
6486                 return -ENOMEM;
6487
6488         rc = qeth_send_setassparms(card, iob, 0, 0 /* unused */,
6489                                    qeth_start_tso_cb, &tso_data);
6490         if (rc)
6491                 return rc;
6492
6493         if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6494                 qeth_set_tso_off(card, prot);
6495                 return -EOPNOTSUPP;
6496         }
6497
6498         iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6499                                        IPA_CMD_ASS_ENABLE, sizeof(caps), prot);
6500         if (!iob) {
6501                 qeth_set_tso_off(card, prot);
6502                 return -ENOMEM;
6503         }
6504
6505         /* enable TSO capability */
6506         caps.supported = 0;
6507         caps.enabled = QETH_IPA_LARGE_SEND_TCP;
6508         rc = qeth_send_setassparms(card, iob, sizeof(caps), (long) &caps,
6509                                    qeth_setassparms_get_caps_cb, &caps);
6510         if (rc) {
6511                 qeth_set_tso_off(card, prot);
6512                 return rc;
6513         }
6514
6515         if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6516             !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6517                 qeth_set_tso_off(card, prot);
6518                 return -EOPNOTSUPP;
6519         }
6520
6521         dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6522                  tso_data.mss);
6523         return 0;
6524 }
6525
6526 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6527                             enum qeth_prot_versions prot)
6528 {
6529         int rc = on ? qeth_set_tso_on(card, prot) :
6530                       qeth_set_tso_off(card, prot);
6531
6532         return rc ? -EIO : 0;
6533 }
6534
6535 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6536 {
6537         int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6538         int rc_ipv6;
6539
6540         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6541                 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6542                                             QETH_PROT_IPV4);
6543         if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6544                 /* no/one Offload Assist available, so the rc is trivial */
6545                 return rc_ipv4;
6546
6547         rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6548                                     QETH_PROT_IPV6);
6549
6550         if (on)
6551                 /* enable: success if any Assist is active */
6552                 return (rc_ipv6) ? rc_ipv4 : 0;
6553
6554         /* disable: failure if any Assist is still active */
6555         return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6556 }
6557
6558 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \
6559                           NETIF_F_IPV6_CSUM | NETIF_F_TSO6)
6560 /**
6561  * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6562  * @dev:        a net_device
6563  */
6564 void qeth_enable_hw_features(struct net_device *dev)
6565 {
6566         struct qeth_card *card = dev->ml_priv;
6567         netdev_features_t features;
6568
6569         rtnl_lock();
6570         features = dev->features;
6571         /* force-off any feature that needs an IPA sequence.
6572          * netdev_update_features() will restart them.
6573          */
6574         dev->features &= ~QETH_HW_FEATURES;
6575         netdev_update_features(dev);
6576         if (features != dev->features)
6577                 dev_warn(&card->gdev->dev,
6578                          "Device recovery failed to restore all offload features\n");
6579         rtnl_unlock();
6580 }
6581 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6582
6583 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6584 {
6585         struct qeth_card *card = dev->ml_priv;
6586         netdev_features_t changed = dev->features ^ features;
6587         int rc = 0;
6588
6589         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6590         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6591
6592         if ((changed & NETIF_F_IP_CSUM)) {
6593                 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6594                                        IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6595                 if (rc)
6596                         changed ^= NETIF_F_IP_CSUM;
6597         }
6598         if (changed & NETIF_F_IPV6_CSUM) {
6599                 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6600                                        IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6601                 if (rc)
6602                         changed ^= NETIF_F_IPV6_CSUM;
6603         }
6604         if (changed & NETIF_F_RXCSUM) {
6605                 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6606                 if (rc)
6607                         changed ^= NETIF_F_RXCSUM;
6608         }
6609         if (changed & NETIF_F_TSO) {
6610                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6611                                       QETH_PROT_IPV4);
6612                 if (rc)
6613                         changed ^= NETIF_F_TSO;
6614         }
6615         if (changed & NETIF_F_TSO6) {
6616                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6617                                       QETH_PROT_IPV6);
6618                 if (rc)
6619                         changed ^= NETIF_F_TSO6;
6620         }
6621
6622         /* everything changed successfully? */
6623         if ((dev->features ^ features) == changed)
6624                 return 0;
6625         /* something went wrong. save changed features and return error */
6626         dev->features ^= changed;
6627         return -EIO;
6628 }
6629 EXPORT_SYMBOL_GPL(qeth_set_features);
6630
6631 netdev_features_t qeth_fix_features(struct net_device *dev,
6632                                     netdev_features_t features)
6633 {
6634         struct qeth_card *card = dev->ml_priv;
6635
6636         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6637         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6638                 features &= ~NETIF_F_IP_CSUM;
6639         if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6640                 features &= ~NETIF_F_IPV6_CSUM;
6641         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6642             !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6643                 features &= ~NETIF_F_RXCSUM;
6644         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6645                 features &= ~NETIF_F_TSO;
6646         if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6647                 features &= ~NETIF_F_TSO6;
6648         /* if the card isn't up, remove features that require hw changes */
6649         if (card->state == CARD_STATE_DOWN ||
6650             card->state == CARD_STATE_RECOVER)
6651                 features &= ~QETH_HW_FEATURES;
6652         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6653         return features;
6654 }
6655 EXPORT_SYMBOL_GPL(qeth_fix_features);
6656
6657 netdev_features_t qeth_features_check(struct sk_buff *skb,
6658                                       struct net_device *dev,
6659                                       netdev_features_t features)
6660 {
6661         /* GSO segmentation builds skbs with
6662          *      a (small) linear part for the headers, and
6663          *      page frags for the data.
6664          * Compared to a linear skb, the header-only part consumes an
6665          * additional buffer element. This reduces buffer utilization, and
6666          * hurts throughput. So compress small segments into one element.
6667          */
6668         if (netif_needs_gso(skb, features)) {
6669                 /* match skb_segment(): */
6670                 unsigned int doffset = skb->data - skb_mac_header(skb);
6671                 unsigned int hsize = skb_shinfo(skb)->gso_size;
6672                 unsigned int hroom = skb_headroom(skb);
6673
6674                 /* linearize only if resulting skb allocations are order-0: */
6675                 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6676                         features &= ~NETIF_F_SG;
6677         }
6678
6679         return vlan_features_check(skb, features);
6680 }
6681 EXPORT_SYMBOL_GPL(qeth_features_check);
6682
6683 static int __init qeth_core_init(void)
6684 {
6685         int rc;
6686
6687         pr_info("loading core functions\n");
6688         INIT_LIST_HEAD(&qeth_core_card_list.list);
6689         rwlock_init(&qeth_core_card_list.rwlock);
6690
6691         qeth_wq = create_singlethread_workqueue("qeth_wq");
6692         if (!qeth_wq) {
6693                 rc = -ENOMEM;
6694                 goto out_err;
6695         }
6696
6697         rc = qeth_register_dbf_views();
6698         if (rc)
6699                 goto dbf_err;
6700         qeth_core_root_dev = root_device_register("qeth");
6701         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6702         if (rc)
6703                 goto register_err;
6704         qeth_core_header_cache =
6705                 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6706                                   roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6707                                   0, NULL);
6708         if (!qeth_core_header_cache) {
6709                 rc = -ENOMEM;
6710                 goto slab_err;
6711         }
6712         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6713                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6714         if (!qeth_qdio_outbuf_cache) {
6715                 rc = -ENOMEM;
6716                 goto cqslab_err;
6717         }
6718         rc = ccw_driver_register(&qeth_ccw_driver);
6719         if (rc)
6720                 goto ccw_err;
6721         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6722         if (rc)
6723                 goto ccwgroup_err;
6724
6725         return 0;
6726
6727 ccwgroup_err:
6728         ccw_driver_unregister(&qeth_ccw_driver);
6729 ccw_err:
6730         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6731 cqslab_err:
6732         kmem_cache_destroy(qeth_core_header_cache);
6733 slab_err:
6734         root_device_unregister(qeth_core_root_dev);
6735 register_err:
6736         qeth_unregister_dbf_views();
6737 dbf_err:
6738         destroy_workqueue(qeth_wq);
6739 out_err:
6740         pr_err("Initializing the qeth device driver failed\n");
6741         return rc;
6742 }
6743
6744 static void __exit qeth_core_exit(void)
6745 {
6746         qeth_clear_dbf_list();
6747         destroy_workqueue(qeth_wq);
6748         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6749         ccw_driver_unregister(&qeth_ccw_driver);
6750         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6751         kmem_cache_destroy(qeth_core_header_cache);
6752         root_device_unregister(qeth_core_root_dev);
6753         qeth_unregister_dbf_views();
6754         pr_info("core functions removed\n");
6755 }
6756
6757 module_init(qeth_core_init);
6758 module_exit(qeth_core_exit);
6759 MODULE_AUTHOR("Frank Blaschka <[email protected]>");
6760 MODULE_DESCRIPTION("qeth core functions");
6761 MODULE_LICENSE("GPL");