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_LANE_ETH100:
 171                                 return "OSD_FE_LANE";
 172                         case QETH_LINK_TYPE_LANE_TR:
 173                                 return "OSD_TR_LANE";
 174                         case QETH_LINK_TYPE_LANE_ETH1000:
 175                                 return "OSD_GbE_LANE";
 176                         case QETH_LINK_TYPE_LANE:
 177                                 return "OSD_ATM_LANE";
 178                         default:
 179                                 return "OSD_Express";
 180                         }
 181                 case QETH_CARD_TYPE_IQD:
 182                         return "HiperSockets";
 183                 case QETH_CARD_TYPE_OSN:
 184                         return "OSN";
 185                 case QETH_CARD_TYPE_OSM:
 186                         return "OSM_1000";
 187                 case QETH_CARD_TYPE_OSX:
 188                         return "OSX_10GIG";
 189                 default:
 190                         return "unknown";
 191                 }
 192         }
 193         return "n/a";
 194 }
 195
 196 void qeth_set_recovery_task(struct qeth_card *card)
 197 {
 198         card->recovery_task = current;
 199 }
 200 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 201
 202 void qeth_clear_recovery_task(struct qeth_card *card)
 203 {
 204         card->recovery_task = NULL;
 205 }
 206 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 207
 208 static bool qeth_is_recovery_task(const struct qeth_card *card)
 209 {
 210         return card->recovery_task == current;
 211 }
 212
 213 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 214                          int clear_start_mask)
 215 {
 216         unsigned long flags;
 217
 218         spin_lock_irqsave(&card->thread_mask_lock, flags);
 219         card->thread_allowed_mask = threads;
 220         if (clear_start_mask)
 221                 card->thread_start_mask &= threads;
 222         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 223         wake_up(&card->wait_q);
 224 }
 225 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 226
 227 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 228 {
 229         unsigned long flags;
 230         int rc = 0;
 231
 232         spin_lock_irqsave(&card->thread_mask_lock, flags);
 233         rc = (card->thread_running_mask & threads);
 234         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 235         return rc;
 236 }
 237 EXPORT_SYMBOL_GPL(qeth_threads_running);
 238
 239 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 240 {
 241         if (qeth_is_recovery_task(card))
 242                 return 0;
 243         return wait_event_interruptible(card->wait_q,
 244                         qeth_threads_running(card, threads) == 0);
 245 }
 246 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 247
 248 void qeth_clear_working_pool_list(struct qeth_card *card)
 249 {
 250         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 251
 252         QETH_CARD_TEXT(card, 5, "clwrklst");
 253         list_for_each_entry_safe(pool_entry, tmp,
 254                             &card->qdio.in_buf_pool.entry_list, list){
 255                         list_del(&pool_entry->list);
 256         }
 257 }
 258 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 259
 260 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 261 {
 262         struct qeth_buffer_pool_entry *pool_entry;
 263         void *ptr;
 264         int i, j;
 265
 266         QETH_CARD_TEXT(card, 5, "alocpool");
 267         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 268                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 269                 if (!pool_entry) {
 270                         qeth_free_buffer_pool(card);
 271                         return -ENOMEM;
 272                 }
 273                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 274                         ptr = (void *) __get_free_page(GFP_KERNEL);
 275                         if (!ptr) {
 276                                 while (j > 0)
 277                                         free_page((unsigned long)
 278                                                   pool_entry->elements[--j]);
 279                                 kfree(pool_entry);
 280                                 qeth_free_buffer_pool(card);
 281                                 return -ENOMEM;
 282                         }
 283                         pool_entry->elements[j] = ptr;
 284                 }
 285                 list_add(&pool_entry->init_list,
 286                          &card->qdio.init_pool.entry_list);
 287         }
 288         return 0;
 289 }
 290
 291 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 292 {
 293         QETH_CARD_TEXT(card, 2, "realcbp");
 294
 295         if ((card->state != CARD_STATE_DOWN) &&
 296             (card->state != CARD_STATE_RECOVER))
 297                 return -EPERM;
 298
 299         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 300         qeth_clear_working_pool_list(card);
 301         qeth_free_buffer_pool(card);
 302         card->qdio.in_buf_pool.buf_count = bufcnt;
 303         card->qdio.init_pool.buf_count = bufcnt;
 304         return qeth_alloc_buffer_pool(card);
 305 }
 306 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 307
 308 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 309 {
 310         if (!q)
 311                 return;
 312
 313         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 314         kfree(q);
 315 }
 316
 317 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 318 {
 319         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 320         int i;
 321
 322         if (!q)
 323                 return NULL;
 324
 325         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 326                 kfree(q);
 327                 return NULL;
 328         }
 329
 330         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 331                 q->bufs[i].buffer = q->qdio_bufs[i];
 332
 333         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 334         return q;
 335 }
 336
 337 static int qeth_cq_init(struct qeth_card *card)
 338 {
 339         int rc;
 340
 341         if (card->options.cq == QETH_CQ_ENABLED) {
 342                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 343                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 344                                    QDIO_MAX_BUFFERS_PER_Q);
 345                 card->qdio.c_q->next_buf_to_init = 127;
 346                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 347                              card->qdio.no_in_queues - 1, 0,
 348                              127);
 349                 if (rc) {
 350                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 351                         goto out;
 352                 }
 353         }
 354         rc = 0;
 355 out:
 356         return rc;
 357 }
 358
 359 static int qeth_alloc_cq(struct qeth_card *card)
 360 {
 361         int rc;
 362
 363         if (card->options.cq == QETH_CQ_ENABLED) {
 364                 int i;
 365                 struct qdio_outbuf_state *outbuf_states;
 366
 367                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 368                 card->qdio.c_q = qeth_alloc_qdio_queue();
 369                 if (!card->qdio.c_q) {
 370                         rc = -1;
 371                         goto kmsg_out;
 372                 }
 373                 card->qdio.no_in_queues = 2;
 374                 card->qdio.out_bufstates =
 375                         kcalloc(card->qdio.no_out_queues *
 376                                         QDIO_MAX_BUFFERS_PER_Q,
 377                                 sizeof(struct qdio_outbuf_state),
 378                                 GFP_KERNEL);
 379                 outbuf_states = card->qdio.out_bufstates;
 380                 if (outbuf_states == NULL) {
 381                         rc = -1;
 382                         goto free_cq_out;
 383                 }
 384                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 385                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 386                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 387                 }
 388         } else {
 389                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 390                 card->qdio.c_q = NULL;
 391                 card->qdio.no_in_queues = 1;
 392         }
 393         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 394         rc = 0;
 395 out:
 396         return rc;
 397 free_cq_out:
 398         qeth_free_qdio_queue(card->qdio.c_q);
 399         card->qdio.c_q = NULL;
 400 kmsg_out:
 401         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 402         goto out;
 403 }
 404
 405 static void qeth_free_cq(struct qeth_card *card)
 406 {
 407         if (card->qdio.c_q) {
 408                 --card->qdio.no_in_queues;
 409                 qeth_free_qdio_queue(card->qdio.c_q);
 410                 card->qdio.c_q = NULL;
 411         }
 412         kfree(card->qdio.out_bufstates);
 413         card->qdio.out_bufstates = NULL;
 414 }
 415
 416 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 417                                                         int delayed)
 418 {
 419         enum iucv_tx_notify n;
 420
 421         switch (sbalf15) {
 422         case 0:
 423                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 424                 break;
 425         case 4:
 426         case 16:
 427         case 17:
 428         case 18:
 429                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 430                         TX_NOTIFY_UNREACHABLE;
 431                 break;
 432         default:
 433                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 434                         TX_NOTIFY_GENERALERROR;
 435                 break;
 436         }
 437
 438         return n;
 439 }
 440
 441 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
 442                                          int forced_cleanup)
 443 {
 444         if (q->card->options.cq != QETH_CQ_ENABLED)
 445                 return;
 446
 447         if (q->bufs[bidx]->next_pending != NULL) {
 448                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 449                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 450
 451                 while (c) {
 452                         if (forced_cleanup ||
 453                             atomic_read(&c->state) ==
 454                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 455                                 struct qeth_qdio_out_buffer *f = c;
 456                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 457                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 458                                 /* release here to avoid interleaving between
 459                                    outbound tasklet and inbound tasklet
 460                                    regarding notifications and lifecycle */
 461                                 qeth_release_skbs(c);
 462
 463                                 c = f->next_pending;
 464                                 WARN_ON_ONCE(head->next_pending != f);
 465                                 head->next_pending = c;
 466                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 467                         } else {
 468                                 head = c;
 469                                 c = c->next_pending;
 470                         }
 471
 472                 }
 473         }
 474         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 475                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 476                 /* for recovery situations */
 477                 qeth_init_qdio_out_buf(q, bidx);
 478                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 479         }
 480 }
 481
 482
 483 static void qeth_qdio_handle_aob(struct qeth_card *card,
 484                                  unsigned long phys_aob_addr)
 485 {
 486         struct qaob *aob;
 487         struct qeth_qdio_out_buffer *buffer;
 488         enum iucv_tx_notify notification;
 489         unsigned int i;
 490
 491         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 492         QETH_CARD_TEXT(card, 5, "haob");
 493         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 494         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 495         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 496
 497         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 498                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 499                 notification = TX_NOTIFY_OK;
 500         } else {
 501                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 502                                                         QETH_QDIO_BUF_PENDING);
 503                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 504                 notification = TX_NOTIFY_DELAYED_OK;
 505         }
 506
 507         if (aob->aorc != 0)  {
 508                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 509                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 510         }
 511         qeth_notify_skbs(buffer->q, buffer, notification);
 512
 513         /* Free dangling allocations. The attached skbs are handled by
 514          * qeth_cleanup_handled_pending().
 515          */
 516         for (i = 0;
 517              i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
 518              i++) {
 519                 if (aob->sba[i] && buffer->is_header[i])
 520                         kmem_cache_free(qeth_core_header_cache,
 521                                         (void *) aob->sba[i]);
 522         }
 523         atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
 524
 525         qdio_release_aob(aob);
 526 }
 527
 528 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 529 {
 530         return card->options.cq == QETH_CQ_ENABLED &&
 531             card->qdio.c_q != NULL &&
 532             queue != 0 &&
 533             queue == card->qdio.no_in_queues - 1;
 534 }
 535
 536 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data)
 537 {
 538         ccw->cmd_code = cmd_code;
 539         ccw->flags = CCW_FLAG_SLI;
 540         ccw->count = len;
 541         ccw->cda = (__u32) __pa(data);
 542 }
 543
 544 static int __qeth_issue_next_read(struct qeth_card *card)
 545 {
 546         struct qeth_channel *channel = &card->read;
 547         struct qeth_cmd_buffer *iob;
 548         int rc;
 549
 550         QETH_CARD_TEXT(card, 5, "issnxrd");
 551         if (channel->state != CH_STATE_UP)
 552                 return -EIO;
 553         iob = qeth_get_buffer(channel);
 554         if (!iob) {
 555                 dev_warn(&card->gdev->dev, "The qeth device driver "
 556                         "failed to recover an error on the device\n");
 557                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 558                         "available\n", dev_name(&card->gdev->dev));
 559                 return -ENOMEM;
 560         }
 561         qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
 562         QETH_CARD_TEXT(card, 6, "noirqpnd");
 563         rc = ccw_device_start(channel->ccwdev, channel->ccw,
 564                               (addr_t) iob, 0, 0);
 565         if (rc) {
 566                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 567                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 568                 atomic_set(&channel->irq_pending, 0);
 569                 card->read_or_write_problem = 1;
 570                 qeth_schedule_recovery(card);
 571                 wake_up(&card->wait_q);
 572         }
 573         return rc;
 574 }
 575
 576 static int qeth_issue_next_read(struct qeth_card *card)
 577 {
 578         int ret;
 579
 580         spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 581         ret = __qeth_issue_next_read(card);
 582         spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 583
 584         return ret;
 585 }
 586
 587 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 588 {
 589         struct qeth_reply *reply;
 590
 591         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 592         if (reply) {
 593                 refcount_set(&reply->refcnt, 1);
 594                 atomic_set(&reply->received, 0);
 595         }
 596         return reply;
 597 }
 598
 599 static void qeth_get_reply(struct qeth_reply *reply)
 600 {
 601         refcount_inc(&reply->refcnt);
 602 }
 603
 604 static void qeth_put_reply(struct qeth_reply *reply)
 605 {
 606         if (refcount_dec_and_test(&reply->refcnt))
 607                 kfree(reply);
 608 }
 609
 610 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 611                 struct qeth_card *card)
 612 {
 613         const char *ipa_name;
 614         int com = cmd->hdr.command;
 615         ipa_name = qeth_get_ipa_cmd_name(com);
 616         if (rc)
 617                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 618                                 "x%X \"%s\"\n",
 619                                 ipa_name, com, dev_name(&card->gdev->dev),
 620                                 QETH_CARD_IFNAME(card), rc,
 621                                 qeth_get_ipa_msg(rc));
 622         else
 623                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 624                                 ipa_name, com, dev_name(&card->gdev->dev),
 625                                 QETH_CARD_IFNAME(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 %#02x\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, "%s check on device dstat=x%x, cstat=x%x\n",
 976                         dev_name(&cdev->dev), 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, "%s i/o-error on device\n",
1017                         dev_name(&cdev->dev));
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, "%s unknown error %ld on device\n",
1035                         dev_name(&cdev->dev), PTR_ERR(irb));
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, "%s sense data available. cstat "
1118                                 "0x%X dstat 0x%X\n",
1119                                 dev_name(&channel->ccwdev->dev), cstat, 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, "%s IDX activate timed out\n",
1894                         dev_name(&channel->ccwdev->dev));
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, "%s IDX_ACTIVATE on write channel:"
1930                                 " negative reply\n",
1931                                 dev_name(&channel->ccwdev->dev));
1932                 goto out;
1933         }
1934         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1935         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1936                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1937                         "function level mismatch (sent: 0x%x, received: "
1938                         "0x%x)\n", dev_name(&channel->ccwdev->dev),
1939                         card->info.func_level, temp);
1940                 goto out;
1941         }
1942         channel->state = CH_STATE_UP;
1943 out:
1944         qeth_release_buffer(channel, iob);
1945 }
1946
1947 static void qeth_idx_read_cb(struct qeth_card *card,
1948                              struct qeth_channel *channel,
1949                              struct qeth_cmd_buffer *iob)
1950 {
1951         __u16 temp;
1952
1953         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1954         if (channel->state == CH_STATE_DOWN) {
1955                 channel->state = CH_STATE_ACTIVATING;
1956                 goto out;
1957         }
1958
1959         if (qeth_check_idx_response(card, iob->data))
1960                         goto out;
1961
1962         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1963                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1964                 case QETH_IDX_ACT_ERR_EXCL:
1965                         dev_err(&channel->ccwdev->dev,
1966                                 "The adapter is used exclusively by another "
1967                                 "host\n");
1968                         break;
1969                 case QETH_IDX_ACT_ERR_AUTH:
1970                 case QETH_IDX_ACT_ERR_AUTH_USER:
1971                         dev_err(&channel->ccwdev->dev,
1972                                 "Setting the device online failed because of "
1973                                 "insufficient authorization\n");
1974                         break;
1975                 default:
1976                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1977                                 " negative reply\n",
1978                                 dev_name(&channel->ccwdev->dev));
1979                 }
1980                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1981                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1982                 goto out;
1983         }
1984
1985         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1986         if (temp != qeth_peer_func_level(card->info.func_level)) {
1987                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1988                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1989                         dev_name(&channel->ccwdev->dev),
1990                         card->info.func_level, temp);
1991                 goto out;
1992         }
1993         memcpy(&card->token.issuer_rm_r,
1994                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1995                QETH_MPC_TOKEN_LENGTH);
1996         memcpy(&card->info.mcl_level[0],
1997                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1998         channel->state = CH_STATE_UP;
1999 out:
2000         qeth_release_buffer(channel, iob);
2001 }
2002
2003 void qeth_prepare_control_data(struct qeth_card *card, int len,
2004                 struct qeth_cmd_buffer *iob)
2005 {
2006         qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data);
2007         iob->callback = qeth_release_buffer_cb;
2008
2009         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2010                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2011         card->seqno.trans_hdr++;
2012         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2013                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2014         card->seqno.pdu_hdr++;
2015         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2016                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2017         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2018 }
2019 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2020
2021 /**
2022  * qeth_send_control_data() -   send control command to the card
2023  * @card:                       qeth_card structure pointer
2024  * @len:                        size of the command buffer
2025  * @iob:                        qeth_cmd_buffer pointer
2026  * @reply_cb:                   callback function pointer
2027  * @cb_card:                    pointer to the qeth_card structure
2028  * @cb_reply:                   pointer to the qeth_reply structure
2029  * @cb_cmd:                     pointer to the original iob for non-IPA
2030  *                              commands, or to the qeth_ipa_cmd structure
2031  *                              for the IPA commands.
2032  * @reply_param:                private pointer passed to the callback
2033  *
2034  * Returns the value of the `return_code' field of the response
2035  * block returned from the hardware, or other error indication.
2036  * Value of zero indicates successful execution of the command.
2037  *
2038  * Callback function gets called one or more times, with cb_cmd
2039  * pointing to the response returned by the hardware. Callback
2040  * function must return non-zero if more reply blocks are expected,
2041  * and zero if the last or only reply block is received. Callback
2042  * function can get the value of the reply_param pointer from the
2043  * field 'param' of the structure qeth_reply.
2044  */
2045
2046 int qeth_send_control_data(struct qeth_card *card, int len,
2047                 struct qeth_cmd_buffer *iob,
2048                 int (*reply_cb)(struct qeth_card *cb_card,
2049                                 struct qeth_reply *cb_reply,
2050                                 unsigned long cb_cmd),
2051                 void *reply_param)
2052 {
2053         struct qeth_channel *channel = iob->channel;
2054         int rc;
2055         struct qeth_reply *reply = NULL;
2056         unsigned long timeout, event_timeout;
2057         struct qeth_ipa_cmd *cmd = NULL;
2058
2059         QETH_CARD_TEXT(card, 2, "sendctl");
2060
2061         if (card->read_or_write_problem) {
2062                 qeth_release_buffer(channel, iob);
2063                 return -EIO;
2064         }
2065         reply = qeth_alloc_reply(card);
2066         if (!reply) {
2067                 return -ENOMEM;
2068         }
2069         reply->callback = reply_cb;
2070         reply->param = reply_param;
2071
2072         init_waitqueue_head(&reply->wait_q);
2073
2074         while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ;
2075
2076         if (IS_IPA(iob->data)) {
2077                 cmd = __ipa_cmd(iob);
2078                 cmd->hdr.seqno = card->seqno.ipa++;
2079                 reply->seqno = cmd->hdr.seqno;
2080                 event_timeout = QETH_IPA_TIMEOUT;
2081         } else {
2082                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2083                 event_timeout = QETH_TIMEOUT;
2084         }
2085         qeth_prepare_control_data(card, len, iob);
2086
2087         spin_lock_irq(&card->lock);
2088         list_add_tail(&reply->list, &card->cmd_waiter_list);
2089         spin_unlock_irq(&card->lock);
2090
2091         timeout = jiffies + event_timeout;
2092
2093         QETH_CARD_TEXT(card, 6, "noirqpnd");
2094         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
2095         rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
2096                                       (addr_t) iob, 0, 0, event_timeout);
2097         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
2098         if (rc) {
2099                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2100                         "ccw_device_start rc = %i\n",
2101                         dev_name(&channel->ccwdev->dev), rc);
2102                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2103                 spin_lock_irq(&card->lock);
2104                 list_del_init(&reply->list);
2105                 qeth_put_reply(reply);
2106                 spin_unlock_irq(&card->lock);
2107                 qeth_release_buffer(channel, iob);
2108                 atomic_set(&channel->irq_pending, 0);
2109                 wake_up(&card->wait_q);
2110                 return rc;
2111         }
2112
2113         /* we have only one long running ipassist, since we can ensure
2114            process context of this command we can sleep */
2115         if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2116             cmd->hdr.prot_version == QETH_PROT_IPV4) {
2117                 if (!wait_event_timeout(reply->wait_q,
2118                     atomic_read(&reply->received), event_timeout))
2119                         goto time_err;
2120         } else {
2121                 while (!atomic_read(&reply->received)) {
2122                         if (time_after(jiffies, timeout))
2123                                 goto time_err;
2124                         cpu_relax();
2125                 }
2126         }
2127
2128         rc = reply->rc;
2129         qeth_put_reply(reply);
2130         return rc;
2131
2132 time_err:
2133         reply->rc = -ETIME;
2134         spin_lock_irq(&card->lock);
2135         list_del_init(&reply->list);
2136         spin_unlock_irq(&card->lock);
2137         atomic_inc(&reply->received);
2138         rc = reply->rc;
2139         qeth_put_reply(reply);
2140         return rc;
2141 }
2142 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2143
2144 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2145                 unsigned long data)
2146 {
2147         struct qeth_cmd_buffer *iob;
2148
2149         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2150
2151         iob = (struct qeth_cmd_buffer *) data;
2152         memcpy(&card->token.cm_filter_r,
2153                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2154                QETH_MPC_TOKEN_LENGTH);
2155         return 0;
2156 }
2157
2158 static int qeth_cm_enable(struct qeth_card *card)
2159 {
2160         int rc;
2161         struct qeth_cmd_buffer *iob;
2162
2163         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2164
2165         iob = qeth_wait_for_buffer(&card->write);
2166         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2167         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2168                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2169         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2170                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2171
2172         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2173                                     qeth_cm_enable_cb, NULL);
2174         return rc;
2175 }
2176
2177 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2178                 unsigned long data)
2179 {
2180         struct qeth_cmd_buffer *iob;
2181
2182         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2183
2184         iob = (struct qeth_cmd_buffer *) data;
2185         memcpy(&card->token.cm_connection_r,
2186                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2187                QETH_MPC_TOKEN_LENGTH);
2188         return 0;
2189 }
2190
2191 static int qeth_cm_setup(struct qeth_card *card)
2192 {
2193         int rc;
2194         struct qeth_cmd_buffer *iob;
2195
2196         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2197
2198         iob = qeth_wait_for_buffer(&card->write);
2199         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2200         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2201                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2202         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2203                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2204         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2205                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2206         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2207                                     qeth_cm_setup_cb, NULL);
2208         return rc;
2209 }
2210
2211 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2212 {
2213         struct net_device *dev = card->dev;
2214         unsigned int new_mtu;
2215
2216         if (!max_mtu) {
2217                 /* IQD needs accurate max MTU to set up its RX buffers: */
2218                 if (IS_IQD(card))
2219                         return -EINVAL;
2220                 /* tolerate quirky HW: */
2221                 max_mtu = ETH_MAX_MTU;
2222         }
2223
2224         rtnl_lock();
2225         if (IS_IQD(card)) {
2226                 /* move any device with default MTU to new max MTU: */
2227                 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2228
2229                 /* adjust RX buffer size to new max MTU: */
2230                 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2231                 if (dev->max_mtu && dev->max_mtu != max_mtu)
2232                         qeth_free_qdio_buffers(card);
2233         } else {
2234                 if (dev->mtu)
2235                         new_mtu = dev->mtu;
2236                 /* default MTUs for first setup: */
2237                 else if (IS_LAYER2(card))
2238                         new_mtu = ETH_DATA_LEN;
2239                 else
2240                         new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2241         }
2242
2243         dev->max_mtu = max_mtu;
2244         dev->mtu = min(new_mtu, max_mtu);
2245         rtnl_unlock();
2246         return 0;
2247 }
2248
2249 static int qeth_get_mtu_outof_framesize(int framesize)
2250 {
2251         switch (framesize) {
2252         case 0x4000:
2253                 return 8192;
2254         case 0x6000:
2255                 return 16384;
2256         case 0xa000:
2257                 return 32768;
2258         case 0xffff:
2259                 return 57344;
2260         default:
2261                 return 0;
2262         }
2263 }
2264
2265 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2266                 unsigned long data)
2267 {
2268         __u16 mtu, framesize;
2269         __u16 len;
2270         __u8 link_type;
2271         struct qeth_cmd_buffer *iob;
2272
2273         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2274
2275         iob = (struct qeth_cmd_buffer *) data;
2276         memcpy(&card->token.ulp_filter_r,
2277                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2278                QETH_MPC_TOKEN_LENGTH);
2279         if (card->info.type == QETH_CARD_TYPE_IQD) {
2280                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2281                 mtu = qeth_get_mtu_outof_framesize(framesize);
2282         } else {
2283                 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2284         }
2285         *(u16 *)reply->param = mtu;
2286
2287         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2288         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2289                 memcpy(&link_type,
2290                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2291                 card->info.link_type = link_type;
2292         } else
2293                 card->info.link_type = 0;
2294         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2295         return 0;
2296 }
2297
2298 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2299 {
2300         if (IS_OSN(card))
2301                 return QETH_PROT_OSN2;
2302         return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2303 }
2304
2305 static int qeth_ulp_enable(struct qeth_card *card)
2306 {
2307         u8 prot_type = qeth_mpc_select_prot_type(card);
2308         struct qeth_cmd_buffer *iob;
2309         u16 max_mtu;
2310         int rc;
2311
2312         /*FIXME: trace view callbacks*/
2313         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2314
2315         iob = qeth_wait_for_buffer(&card->write);
2316         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2317
2318         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2319         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2320         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2321                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2322         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2323                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2324         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2325                                     qeth_ulp_enable_cb, &max_mtu);
2326         if (rc)
2327                 return rc;
2328         return qeth_update_max_mtu(card, max_mtu);
2329 }
2330
2331 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2332                 unsigned long data)
2333 {
2334         struct qeth_cmd_buffer *iob;
2335
2336         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2337
2338         iob = (struct qeth_cmd_buffer *) data;
2339         memcpy(&card->token.ulp_connection_r,
2340                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2341                QETH_MPC_TOKEN_LENGTH);
2342         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2343                      3)) {
2344                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2345                 dev_err(&card->gdev->dev, "A connection could not be "
2346                         "established because of an OLM limit\n");
2347                 iob->rc = -EMLINK;
2348         }
2349         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2350         return 0;
2351 }
2352
2353 static int qeth_ulp_setup(struct qeth_card *card)
2354 {
2355         int rc;
2356         __u16 temp;
2357         struct qeth_cmd_buffer *iob;
2358         struct ccw_dev_id dev_id;
2359
2360         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2361
2362         iob = qeth_wait_for_buffer(&card->write);
2363         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2364
2365         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2366                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2367         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2368                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2369         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2370                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2371
2372         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2373         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2374         temp = (card->info.cula << 8) + card->info.unit_addr2;
2375         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2376         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2377                                     qeth_ulp_setup_cb, NULL);
2378         return rc;
2379 }
2380
2381 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2382 {
2383         struct qeth_qdio_out_buffer *newbuf;
2384
2385         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2386         if (!newbuf)
2387                 return -ENOMEM;
2388
2389         newbuf->buffer = q->qdio_bufs[bidx];
2390         skb_queue_head_init(&newbuf->skb_list);
2391         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2392         newbuf->q = q;
2393         newbuf->next_pending = q->bufs[bidx];
2394         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2395         q->bufs[bidx] = newbuf;
2396         return 0;
2397 }
2398
2399 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2400 {
2401         if (!q)
2402                 return;
2403
2404         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2405         kfree(q);
2406 }
2407
2408 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2409 {
2410         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2411
2412         if (!q)
2413                 return NULL;
2414
2415         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2416                 kfree(q);
2417                 return NULL;
2418         }
2419         return q;
2420 }
2421
2422 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2423 {
2424         int i, j;
2425
2426         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2427
2428         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2429                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2430                 return 0;
2431
2432         QETH_DBF_TEXT(SETUP, 2, "inq");
2433         card->qdio.in_q = qeth_alloc_qdio_queue();
2434         if (!card->qdio.in_q)
2435                 goto out_nomem;
2436
2437         /* inbound buffer pool */
2438         if (qeth_alloc_buffer_pool(card))
2439                 goto out_freeinq;
2440
2441         /* outbound */
2442         card->qdio.out_qs =
2443                 kcalloc(card->qdio.no_out_queues,
2444                         sizeof(struct qeth_qdio_out_q *),
2445                         GFP_KERNEL);
2446         if (!card->qdio.out_qs)
2447                 goto out_freepool;
2448         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2449                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2450                 if (!card->qdio.out_qs[i])
2451                         goto out_freeoutq;
2452                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2453                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2454                 card->qdio.out_qs[i]->queue_no = i;
2455                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2456                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2457                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2458                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2459                                 goto out_freeoutqbufs;
2460                 }
2461         }
2462
2463         /* completion */
2464         if (qeth_alloc_cq(card))
2465                 goto out_freeoutq;
2466
2467         return 0;
2468
2469 out_freeoutqbufs:
2470         while (j > 0) {
2471                 --j;
2472                 kmem_cache_free(qeth_qdio_outbuf_cache,
2473                                 card->qdio.out_qs[i]->bufs[j]);
2474                 card->qdio.out_qs[i]->bufs[j] = NULL;
2475         }
2476 out_freeoutq:
2477         while (i > 0) {
2478                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2479                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2480         }
2481         kfree(card->qdio.out_qs);
2482         card->qdio.out_qs = NULL;
2483 out_freepool:
2484         qeth_free_buffer_pool(card);
2485 out_freeinq:
2486         qeth_free_qdio_queue(card->qdio.in_q);
2487         card->qdio.in_q = NULL;
2488 out_nomem:
2489         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2490         return -ENOMEM;
2491 }
2492
2493 static void qeth_free_qdio_buffers(struct qeth_card *card)
2494 {
2495         int i, j;
2496
2497         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2498                 QETH_QDIO_UNINITIALIZED)
2499                 return;
2500
2501         qeth_free_cq(card);
2502         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2503         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2504                 if (card->qdio.in_q->bufs[j].rx_skb)
2505                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2506         }
2507         qeth_free_qdio_queue(card->qdio.in_q);
2508         card->qdio.in_q = NULL;
2509         /* inbound buffer pool */
2510         qeth_free_buffer_pool(card);
2511         /* free outbound qdio_qs */
2512         if (card->qdio.out_qs) {
2513                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2514                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2515                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2516                 }
2517                 kfree(card->qdio.out_qs);
2518                 card->qdio.out_qs = NULL;
2519         }
2520 }
2521
2522 static void qeth_create_qib_param_field(struct qeth_card *card,
2523                 char *param_field)
2524 {
2525
2526         param_field[0] = _ascebc['P'];
2527         param_field[1] = _ascebc['C'];
2528         param_field[2] = _ascebc['I'];
2529         param_field[3] = _ascebc['T'];
2530         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2531         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2532         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2533 }
2534
2535 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2536                 char *param_field)
2537 {
2538         param_field[16] = _ascebc['B'];
2539         param_field[17] = _ascebc['L'];
2540         param_field[18] = _ascebc['K'];
2541         param_field[19] = _ascebc['T'];
2542         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2543         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2544         *((unsigned int *) (&param_field[28])) =
2545                 card->info.blkt.inter_packet_jumbo;
2546 }
2547
2548 static int qeth_qdio_activate(struct qeth_card *card)
2549 {
2550         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2551         return qdio_activate(CARD_DDEV(card));
2552 }
2553
2554 static int qeth_dm_act(struct qeth_card *card)
2555 {
2556         int rc;
2557         struct qeth_cmd_buffer *iob;
2558
2559         QETH_DBF_TEXT(SETUP, 2, "dmact");
2560
2561         iob = qeth_wait_for_buffer(&card->write);
2562         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2563
2564         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2565                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2566         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2567                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2568         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2569         return rc;
2570 }
2571
2572 static int qeth_mpc_initialize(struct qeth_card *card)
2573 {
2574         int rc;
2575
2576         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2577
2578         rc = qeth_issue_next_read(card);
2579         if (rc) {
2580                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2581                 return rc;
2582         }
2583         rc = qeth_cm_enable(card);
2584         if (rc) {
2585                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2586                 goto out_qdio;
2587         }
2588         rc = qeth_cm_setup(card);
2589         if (rc) {
2590                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2591                 goto out_qdio;
2592         }
2593         rc = qeth_ulp_enable(card);
2594         if (rc) {
2595                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2596                 goto out_qdio;
2597         }
2598         rc = qeth_ulp_setup(card);
2599         if (rc) {
2600                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2601                 goto out_qdio;
2602         }
2603         rc = qeth_alloc_qdio_buffers(card);
2604         if (rc) {
2605                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2606                 goto out_qdio;
2607         }
2608         rc = qeth_qdio_establish(card);
2609         if (rc) {
2610                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2611                 qeth_free_qdio_buffers(card);
2612                 goto out_qdio;
2613         }
2614         rc = qeth_qdio_activate(card);
2615         if (rc) {
2616                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2617                 goto out_qdio;
2618         }
2619         rc = qeth_dm_act(card);
2620         if (rc) {
2621                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2622                 goto out_qdio;
2623         }
2624
2625         return 0;
2626 out_qdio:
2627         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2628         qdio_free(CARD_DDEV(card));
2629         return rc;
2630 }
2631
2632 void qeth_print_status_message(struct qeth_card *card)
2633 {
2634         switch (card->info.type) {
2635         case QETH_CARD_TYPE_OSD:
2636         case QETH_CARD_TYPE_OSM:
2637         case QETH_CARD_TYPE_OSX:
2638                 /* VM will use a non-zero first character
2639                  * to indicate a HiperSockets like reporting
2640                  * of the level OSA sets the first character to zero
2641                  * */
2642                 if (!card->info.mcl_level[0]) {
2643                         sprintf(card->info.mcl_level, "%02x%02x",
2644                                 card->info.mcl_level[2],
2645                                 card->info.mcl_level[3]);
2646                         break;
2647                 }
2648                 /* fallthrough */
2649         case QETH_CARD_TYPE_IQD:
2650                 if ((card->info.guestlan) ||
2651                     (card->info.mcl_level[0] & 0x80)) {
2652                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2653                                 card->info.mcl_level[0]];
2654                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2655                                 card->info.mcl_level[1]];
2656                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2657                                 card->info.mcl_level[2]];
2658                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2659                                 card->info.mcl_level[3]];
2660                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2661                 }
2662                 break;
2663         default:
2664                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2665         }
2666         dev_info(&card->gdev->dev,
2667                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2668                  qeth_get_cardname(card),
2669                  (card->info.mcl_level[0]) ? " (level: " : "",
2670                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2671                  (card->info.mcl_level[0]) ? ")" : "",
2672                  qeth_get_cardname_short(card));
2673 }
2674 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2675
2676 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2677 {
2678         struct qeth_buffer_pool_entry *entry;
2679
2680         QETH_CARD_TEXT(card, 5, "inwrklst");
2681
2682         list_for_each_entry(entry,
2683                             &card->qdio.init_pool.entry_list, init_list) {
2684                 qeth_put_buffer_pool_entry(card, entry);
2685         }
2686 }
2687
2688 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2689                                         struct qeth_card *card)
2690 {
2691         struct list_head *plh;
2692         struct qeth_buffer_pool_entry *entry;
2693         int i, free;
2694         struct page *page;
2695
2696         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2697                 return NULL;
2698
2699         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2700                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2701                 free = 1;
2702                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2703                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2704                                 free = 0;
2705                                 break;
2706                         }
2707                 }
2708                 if (free) {
2709                         list_del_init(&entry->list);
2710                         return entry;
2711                 }
2712         }
2713
2714         /* no free buffer in pool so take first one and swap pages */
2715         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2716                         struct qeth_buffer_pool_entry, list);
2717         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2718                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2719                         page = alloc_page(GFP_ATOMIC);
2720                         if (!page) {
2721                                 return NULL;
2722                         } else {
2723                                 free_page((unsigned long)entry->elements[i]);
2724                                 entry->elements[i] = page_address(page);
2725                                 if (card->options.performance_stats)
2726                                         card->perf_stats.sg_alloc_page_rx++;
2727                         }
2728                 }
2729         }
2730         list_del_init(&entry->list);
2731         return entry;
2732 }
2733
2734 static int qeth_init_input_buffer(struct qeth_card *card,
2735                 struct qeth_qdio_buffer *buf)
2736 {
2737         struct qeth_buffer_pool_entry *pool_entry;
2738         int i;
2739
2740         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2741                 buf->rx_skb = netdev_alloc_skb(card->dev,
2742                                                QETH_RX_PULL_LEN + ETH_HLEN);
2743                 if (!buf->rx_skb)
2744                         return 1;
2745         }
2746
2747         pool_entry = qeth_find_free_buffer_pool_entry(card);
2748         if (!pool_entry)
2749                 return 1;
2750
2751         /*
2752          * since the buffer is accessed only from the input_tasklet
2753          * there shouldn't be a need to synchronize; also, since we use
2754          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2755          * buffers
2756          */
2757
2758         buf->pool_entry = pool_entry;
2759         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2760                 buf->buffer->element[i].length = PAGE_SIZE;
2761                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2762                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2763                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2764                 else
2765                         buf->buffer->element[i].eflags = 0;
2766                 buf->buffer->element[i].sflags = 0;
2767         }
2768         return 0;
2769 }
2770
2771 int qeth_init_qdio_queues(struct qeth_card *card)
2772 {
2773         int i, j;
2774         int rc;
2775
2776         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2777
2778         /* inbound queue */
2779         qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2780         memset(&card->rx, 0, sizeof(struct qeth_rx));
2781         qeth_initialize_working_pool_list(card);
2782         /*give only as many buffers to hardware as we have buffer pool entries*/
2783         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2784                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2785         card->qdio.in_q->next_buf_to_init =
2786                 card->qdio.in_buf_pool.buf_count - 1;
2787         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2788                      card->qdio.in_buf_pool.buf_count - 1);
2789         if (rc) {
2790                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2791                 return rc;
2792         }
2793
2794         /* completion */
2795         rc = qeth_cq_init(card);
2796         if (rc) {
2797                 return rc;
2798         }
2799
2800         /* outbound queue */
2801         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2802                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2803                                    QDIO_MAX_BUFFERS_PER_Q);
2804                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2805                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2806                                                  card->qdio.out_qs[i]->bufs[j]);
2807                 }
2808                 card->qdio.out_qs[i]->card = card;
2809                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2810                 card->qdio.out_qs[i]->do_pack = 0;
2811                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2812                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2813                 atomic_set(&card->qdio.out_qs[i]->state,
2814                            QETH_OUT_Q_UNLOCKED);
2815         }
2816         return 0;
2817 }
2818 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2819
2820 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2821 {
2822         switch (link_type) {
2823         case QETH_LINK_TYPE_HSTR:
2824                 return 2;
2825         default:
2826                 return 1;
2827         }
2828 }
2829
2830 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2831                                     struct qeth_ipa_cmd *cmd,
2832                                     enum qeth_ipa_cmds command,
2833                                     enum qeth_prot_versions prot)
2834 {
2835         cmd->hdr.command = command;
2836         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2837         /* cmd->hdr.seqno is set by qeth_send_control_data() */
2838         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2839         cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port;
2840         cmd->hdr.prim_version_no = IS_LAYER2(card) ? 2 : 1;
2841         cmd->hdr.param_count = 1;
2842         cmd->hdr.prot_version = prot;
2843 }
2844
2845 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2846                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2847 {
2848         struct qeth_cmd_buffer *iob;
2849
2850         iob = qeth_get_buffer(&card->write);
2851         if (iob) {
2852                 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
2853         } else {
2854                 dev_warn(&card->gdev->dev,
2855                          "The qeth driver ran out of channel command buffers\n");
2856                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2857                                  dev_name(&card->gdev->dev));
2858         }
2859
2860         return iob;
2861 }
2862 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2863
2864 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob)
2865 {
2866         u8 prot_type = qeth_mpc_select_prot_type(card);
2867
2868         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2869         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2870         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2871                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2872 }
2873 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2874
2875 /**
2876  * qeth_send_ipa_cmd() - send an IPA command
2877  *
2878  * See qeth_send_control_data() for explanation of the arguments.
2879  */
2880
2881 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2882                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2883                         unsigned long),
2884                 void *reply_param)
2885 {
2886         int rc;
2887
2888         QETH_CARD_TEXT(card, 4, "sendipa");
2889         qeth_prepare_ipa_cmd(card, iob);
2890         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2891                                                 iob, reply_cb, reply_param);
2892         if (rc == -ETIME) {
2893                 qeth_clear_ipacmd_list(card);
2894                 qeth_schedule_recovery(card);
2895         }
2896         return rc;
2897 }
2898 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2899
2900 static int qeth_send_startlan(struct qeth_card *card)
2901 {
2902         int rc;
2903         struct qeth_cmd_buffer *iob;
2904
2905         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2906
2907         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2908         if (!iob)
2909                 return -ENOMEM;
2910         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2911         return rc;
2912 }
2913
2914 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2915 {
2916         if (!cmd->hdr.return_code)
2917                 cmd->hdr.return_code =
2918                         cmd->data.setadapterparms.hdr.return_code;
2919         return cmd->hdr.return_code;
2920 }
2921
2922 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2923                 struct qeth_reply *reply, unsigned long data)
2924 {
2925         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2926
2927         QETH_CARD_TEXT(card, 3, "quyadpcb");
2928         if (qeth_setadpparms_inspect_rc(cmd))
2929                 return 0;
2930
2931         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2932                 card->info.link_type =
2933                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2934                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2935         }
2936         card->options.adp.supported_funcs =
2937                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2938         return 0;
2939 }
2940
2941 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2942                 __u32 command, __u32 cmdlen)
2943 {
2944         struct qeth_cmd_buffer *iob;
2945         struct qeth_ipa_cmd *cmd;
2946
2947         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2948                                      QETH_PROT_IPV4);
2949         if (iob) {
2950                 cmd = __ipa_cmd(iob);
2951                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2952                 cmd->data.setadapterparms.hdr.command_code = command;
2953                 cmd->data.setadapterparms.hdr.used_total = 1;
2954                 cmd->data.setadapterparms.hdr.seq_no = 1;
2955         }
2956
2957         return iob;
2958 }
2959
2960 static int qeth_query_setadapterparms(struct qeth_card *card)
2961 {
2962         int rc;
2963         struct qeth_cmd_buffer *iob;
2964
2965         QETH_CARD_TEXT(card, 3, "queryadp");
2966         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2967                                    sizeof(struct qeth_ipacmd_setadpparms));
2968         if (!iob)
2969                 return -ENOMEM;
2970         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2971         return rc;
2972 }
2973
2974 static int qeth_query_ipassists_cb(struct qeth_card *card,
2975                 struct qeth_reply *reply, unsigned long data)
2976 {
2977         struct qeth_ipa_cmd *cmd;
2978
2979         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2980
2981         cmd = (struct qeth_ipa_cmd *) data;
2982
2983         switch (cmd->hdr.return_code) {
2984         case IPA_RC_NOTSUPP:
2985         case IPA_RC_L2_UNSUPPORTED_CMD:
2986                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
2987                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2988                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2989                 return 0;
2990         default:
2991                 if (cmd->hdr.return_code) {
2992                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
2993                                                 "rc=%d\n",
2994                                                 dev_name(&card->gdev->dev),
2995                                                 cmd->hdr.return_code);
2996                         return 0;
2997                 }
2998         }
2999
3000         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3001                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3002                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3003         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3004                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3005                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3006         } else
3007                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3008                                         "\n", dev_name(&card->gdev->dev));
3009         return 0;
3010 }
3011
3012 static int qeth_query_ipassists(struct qeth_card *card,
3013                                 enum qeth_prot_versions prot)
3014 {
3015         int rc;
3016         struct qeth_cmd_buffer *iob;
3017
3018         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3019         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3020         if (!iob)
3021                 return -ENOMEM;
3022         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3023         return rc;
3024 }
3025
3026 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3027                                 struct qeth_reply *reply, unsigned long data)
3028 {
3029         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3030         struct qeth_query_switch_attributes *attrs;
3031         struct qeth_switch_info *sw_info;
3032
3033         QETH_CARD_TEXT(card, 2, "qswiatcb");
3034         if (qeth_setadpparms_inspect_rc(cmd))
3035                 return 0;
3036
3037         sw_info = (struct qeth_switch_info *)reply->param;
3038         attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3039         sw_info->capabilities = attrs->capabilities;
3040         sw_info->settings = attrs->settings;
3041         QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3042                         sw_info->settings);
3043         return 0;
3044 }
3045
3046 int qeth_query_switch_attributes(struct qeth_card *card,
3047                                  struct qeth_switch_info *sw_info)
3048 {
3049         struct qeth_cmd_buffer *iob;
3050
3051         QETH_CARD_TEXT(card, 2, "qswiattr");
3052         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3053                 return -EOPNOTSUPP;
3054         if (!netif_carrier_ok(card->dev))
3055                 return -ENOMEDIUM;
3056         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3057                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3058         if (!iob)
3059                 return -ENOMEM;
3060         return qeth_send_ipa_cmd(card, iob,
3061                                 qeth_query_switch_attributes_cb, sw_info);
3062 }
3063
3064 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3065                 struct qeth_reply *reply, unsigned long data)
3066 {
3067         struct qeth_ipa_cmd *cmd;
3068         __u16 rc;
3069
3070         cmd = (struct qeth_ipa_cmd *)data;
3071         rc = cmd->hdr.return_code;
3072         if (rc)
3073                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3074         else
3075                 card->info.diagass_support = cmd->data.diagass.ext;
3076         return 0;
3077 }
3078
3079 static int qeth_query_setdiagass(struct qeth_card *card)
3080 {
3081         struct qeth_cmd_buffer *iob;
3082         struct qeth_ipa_cmd    *cmd;
3083
3084         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3085         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3086         if (!iob)
3087                 return -ENOMEM;
3088         cmd = __ipa_cmd(iob);
3089         cmd->data.diagass.subcmd_len = 16;
3090         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3091         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3092 }
3093
3094 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3095 {
3096         unsigned long info = get_zeroed_page(GFP_KERNEL);
3097         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3098         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3099         struct ccw_dev_id ccwid;
3100         int level;
3101
3102         tid->chpid = card->info.chpid;
3103         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3104         tid->ssid = ccwid.ssid;
3105         tid->devno = ccwid.devno;
3106         if (!info)
3107                 return;
3108         level = stsi(NULL, 0, 0, 0);
3109         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3110                 tid->lparnr = info222->lpar_number;
3111         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3112                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3113                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3114         }
3115         free_page(info);
3116         return;
3117 }
3118
3119 static int qeth_hw_trap_cb(struct qeth_card *card,
3120                 struct qeth_reply *reply, unsigned long data)
3121 {
3122         struct qeth_ipa_cmd *cmd;
3123         __u16 rc;
3124
3125         cmd = (struct qeth_ipa_cmd *)data;
3126         rc = cmd->hdr.return_code;
3127         if (rc)
3128                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3129         return 0;
3130 }
3131
3132 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3133 {
3134         struct qeth_cmd_buffer *iob;
3135         struct qeth_ipa_cmd *cmd;
3136
3137         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3138         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3139         if (!iob)
3140                 return -ENOMEM;
3141         cmd = __ipa_cmd(iob);
3142         cmd->data.diagass.subcmd_len = 80;
3143         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3144         cmd->data.diagass.type = 1;
3145         cmd->data.diagass.action = action;
3146         switch (action) {
3147         case QETH_DIAGS_TRAP_ARM:
3148                 cmd->data.diagass.options = 0x0003;
3149                 cmd->data.diagass.ext = 0x00010000 +
3150                         sizeof(struct qeth_trap_id);
3151                 qeth_get_trap_id(card,
3152                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3153                 break;
3154         case QETH_DIAGS_TRAP_DISARM:
3155                 cmd->data.diagass.options = 0x0001;
3156                 break;
3157         case QETH_DIAGS_TRAP_CAPTURE:
3158                 break;
3159         }
3160         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3161 }
3162 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3163
3164 static int qeth_check_qdio_errors(struct qeth_card *card,
3165                                   struct qdio_buffer *buf,
3166                                   unsigned int qdio_error,
3167                                   const char *dbftext)
3168 {
3169         if (qdio_error) {
3170                 QETH_CARD_TEXT(card, 2, dbftext);
3171                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3172                                buf->element[15].sflags);
3173                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3174                                buf->element[14].sflags);
3175                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3176                 if ((buf->element[15].sflags) == 0x12) {
3177                         card->stats.rx_dropped++;
3178                         return 0;
3179                 } else
3180                         return 1;
3181         }
3182         return 0;
3183 }
3184
3185 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3186 {
3187         struct qeth_qdio_q *queue = card->qdio.in_q;
3188         struct list_head *lh;
3189         int count;
3190         int i;
3191         int rc;
3192         int newcount = 0;
3193
3194         count = (index < queue->next_buf_to_init)?
3195                 card->qdio.in_buf_pool.buf_count -
3196                 (queue->next_buf_to_init - index) :
3197                 card->qdio.in_buf_pool.buf_count -
3198                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3199         /* only requeue at a certain threshold to avoid SIGAs */
3200         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3201                 for (i = queue->next_buf_to_init;
3202                      i < queue->next_buf_to_init + count; ++i) {
3203                         if (qeth_init_input_buffer(card,
3204                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3205                                 break;
3206                         } else {
3207                                 newcount++;
3208                         }
3209                 }
3210
3211                 if (newcount < count) {
3212                         /* we are in memory shortage so we switch back to
3213                            traditional skb allocation and drop packages */
3214                         atomic_set(&card->force_alloc_skb, 3);
3215                         count = newcount;
3216                 } else {
3217                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3218                 }
3219
3220                 if (!count) {
3221                         i = 0;
3222                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3223                                 i++;
3224                         if (i == card->qdio.in_buf_pool.buf_count) {
3225                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3226                                 card->reclaim_index = index;
3227                                 schedule_delayed_work(
3228                                         &card->buffer_reclaim_work,
3229                                         QETH_RECLAIM_WORK_TIME);
3230                         }
3231                         return;
3232                 }
3233
3234                 /*
3235                  * according to old code it should be avoided to requeue all
3236                  * 128 buffers in order to benefit from PCI avoidance.
3237                  * this function keeps at least one buffer (the buffer at
3238                  * 'index') un-requeued -> this buffer is the first buffer that
3239                  * will be requeued the next time
3240                  */
3241                 if (card->options.performance_stats) {
3242                         card->perf_stats.inbound_do_qdio_cnt++;
3243                         card->perf_stats.inbound_do_qdio_start_time =
3244                                 qeth_get_micros();
3245                 }
3246                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3247                              queue->next_buf_to_init, count);
3248                 if (card->options.performance_stats)
3249                         card->perf_stats.inbound_do_qdio_time +=
3250                                 qeth_get_micros() -
3251                                 card->perf_stats.inbound_do_qdio_start_time;
3252                 if (rc) {
3253                         QETH_CARD_TEXT(card, 2, "qinberr");
3254                 }
3255                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3256                                           QDIO_MAX_BUFFERS_PER_Q;
3257         }
3258 }
3259
3260 static void qeth_buffer_reclaim_work(struct work_struct *work)
3261 {
3262         struct qeth_card *card = container_of(work, struct qeth_card,
3263                 buffer_reclaim_work.work);
3264
3265         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3266         qeth_queue_input_buffer(card, card->reclaim_index);
3267 }
3268
3269 static void qeth_handle_send_error(struct qeth_card *card,
3270                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3271 {
3272         int sbalf15 = buffer->buffer->element[15].sflags;
3273
3274         QETH_CARD_TEXT(card, 6, "hdsnderr");
3275         if (card->info.type == QETH_CARD_TYPE_IQD) {
3276                 if (sbalf15 == 0) {
3277                         qdio_err = 0;
3278                 } else {
3279                         qdio_err = 1;
3280                 }
3281         }
3282         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3283
3284         if (!qdio_err)
3285                 return;
3286
3287         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3288                 return;
3289
3290         QETH_CARD_TEXT(card, 1, "lnkfail");
3291         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3292                        (u16)qdio_err, (u8)sbalf15);
3293 }
3294
3295 /**
3296  * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3297  * @queue: queue to check for packing buffer
3298  *
3299  * Returns number of buffers that were prepared for flush.
3300  */
3301 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3302 {
3303         struct qeth_qdio_out_buffer *buffer;
3304
3305         buffer = queue->bufs[queue->next_buf_to_fill];
3306         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3307             (buffer->next_element_to_fill > 0)) {
3308                 /* it's a packing buffer */
3309                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3310                 queue->next_buf_to_fill =
3311                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3312                 return 1;
3313         }
3314         return 0;
3315 }
3316
3317 /*
3318  * Switched to packing state if the number of used buffers on a queue
3319  * reaches a certain limit.
3320  */
3321 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3322 {
3323         if (!queue->do_pack) {
3324                 if (atomic_read(&queue->used_buffers)
3325                     >= QETH_HIGH_WATERMARK_PACK){
3326                         /* switch non-PACKING -> PACKING */
3327                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3328                         if (queue->card->options.performance_stats)
3329                                 queue->card->perf_stats.sc_dp_p++;
3330                         queue->do_pack = 1;
3331                 }
3332         }
3333 }
3334
3335 /*
3336  * Switches from packing to non-packing mode. If there is a packing
3337  * buffer on the queue this buffer will be prepared to be flushed.
3338  * In that case 1 is returned to inform the caller. If no buffer
3339  * has to be flushed, zero is returned.
3340  */
3341 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3342 {
3343         if (queue->do_pack) {
3344                 if (atomic_read(&queue->used_buffers)
3345                     <= QETH_LOW_WATERMARK_PACK) {
3346                         /* switch PACKING -> non-PACKING */
3347                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3348                         if (queue->card->options.performance_stats)
3349                                 queue->card->perf_stats.sc_p_dp++;
3350                         queue->do_pack = 0;
3351                         return qeth_prep_flush_pack_buffer(queue);
3352                 }
3353         }
3354         return 0;
3355 }
3356
3357 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3358                                int count)
3359 {
3360         struct qeth_qdio_out_buffer *buf;
3361         int rc;
3362         int i;
3363         unsigned int qdio_flags;
3364
3365         for (i = index; i < index + count; ++i) {
3366                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3367                 buf = queue->bufs[bidx];
3368                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3369                                 SBAL_EFLAGS_LAST_ENTRY;
3370
3371                 if (queue->bufstates)
3372                         queue->bufstates[bidx].user = buf;
3373
3374                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3375                         continue;
3376
3377                 if (!queue->do_pack) {
3378                         if ((atomic_read(&queue->used_buffers) >=
3379                                 (QETH_HIGH_WATERMARK_PACK -
3380                                  QETH_WATERMARK_PACK_FUZZ)) &&
3381                             !atomic_read(&queue->set_pci_flags_count)) {
3382                                 /* it's likely that we'll go to packing
3383                                  * mode soon */
3384                                 atomic_inc(&queue->set_pci_flags_count);
3385                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3386                         }
3387                 } else {
3388                         if (!atomic_read(&queue->set_pci_flags_count)) {
3389                                 /*
3390                                  * there's no outstanding PCI any more, so we
3391                                  * have to request a PCI to be sure the the PCI
3392                                  * will wake at some time in the future then we
3393                                  * can flush packed buffers that might still be
3394                                  * hanging around, which can happen if no
3395                                  * further send was requested by the stack
3396                                  */
3397                                 atomic_inc(&queue->set_pci_flags_count);
3398                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3399                         }
3400                 }
3401         }
3402
3403         netif_trans_update(queue->card->dev);
3404         if (queue->card->options.performance_stats) {
3405                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3406                 queue->card->perf_stats.outbound_do_qdio_start_time =
3407                         qeth_get_micros();
3408         }
3409         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3410         if (atomic_read(&queue->set_pci_flags_count))
3411                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3412         atomic_add(count, &queue->used_buffers);
3413
3414         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3415                      queue->queue_no, index, count);
3416         if (queue->card->options.performance_stats)
3417                 queue->card->perf_stats.outbound_do_qdio_time +=
3418                         qeth_get_micros() -
3419                         queue->card->perf_stats.outbound_do_qdio_start_time;
3420         if (rc) {
3421                 queue->card->stats.tx_errors += count;
3422                 /* ignore temporary SIGA errors without busy condition */
3423                 if (rc == -ENOBUFS)
3424                         return;
3425                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3426                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3427                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3428                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3429                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3430
3431                 /* this must not happen under normal circumstances. if it
3432                  * happens something is really wrong -> recover */
3433                 qeth_schedule_recovery(queue->card);
3434                 return;
3435         }
3436         if (queue->card->options.performance_stats)
3437                 queue->card->perf_stats.bufs_sent += count;
3438 }
3439
3440 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3441 {
3442         int index;
3443         int flush_cnt = 0;
3444         int q_was_packing = 0;
3445
3446         /*
3447          * check if weed have to switch to non-packing mode or if
3448          * we have to get a pci flag out on the queue
3449          */
3450         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3451             !atomic_read(&queue->set_pci_flags_count)) {
3452                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3453                                 QETH_OUT_Q_UNLOCKED) {
3454                         /*
3455                          * If we get in here, there was no action in
3456                          * do_send_packet. So, we check if there is a
3457                          * packing buffer to be flushed here.
3458                          */
3459                         netif_stop_queue(queue->card->dev);
3460                         index = queue->next_buf_to_fill;
3461                         q_was_packing = queue->do_pack;
3462                         /* queue->do_pack may change */
3463                         barrier();
3464                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3465                         if (!flush_cnt &&
3466                             !atomic_read(&queue->set_pci_flags_count))
3467                                 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3468                         if (queue->card->options.performance_stats &&
3469                             q_was_packing)
3470                                 queue->card->perf_stats.bufs_sent_pack +=
3471                                         flush_cnt;
3472                         if (flush_cnt)
3473                                 qeth_flush_buffers(queue, index, flush_cnt);
3474                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3475                 }
3476         }
3477 }
3478
3479 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3480                                  unsigned long card_ptr)
3481 {
3482         struct qeth_card *card = (struct qeth_card *)card_ptr;
3483
3484         if (card->dev->flags & IFF_UP)
3485                 napi_schedule(&card->napi);
3486 }
3487
3488 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3489 {
3490         int rc;
3491
3492         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3493                 rc = -1;
3494                 goto out;
3495         } else {
3496                 if (card->options.cq == cq) {
3497                         rc = 0;
3498                         goto out;
3499                 }
3500
3501                 if (card->state != CARD_STATE_DOWN &&
3502                     card->state != CARD_STATE_RECOVER) {
3503                         rc = -1;
3504                         goto out;
3505                 }
3506
3507                 qeth_free_qdio_buffers(card);
3508                 card->options.cq = cq;
3509                 rc = 0;
3510         }
3511 out:
3512         return rc;
3513
3514 }
3515 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3516
3517 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3518                                  unsigned int queue, int first_element,
3519                                  int count)
3520 {
3521         struct qeth_qdio_q *cq = card->qdio.c_q;
3522         int i;
3523         int rc;
3524
3525         if (!qeth_is_cq(card, queue))
3526                 goto out;
3527
3528         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3529         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3530         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3531
3532         if (qdio_err) {
3533                 netif_stop_queue(card->dev);
3534                 qeth_schedule_recovery(card);
3535                 goto out;
3536         }
3537
3538         if (card->options.performance_stats) {
3539                 card->perf_stats.cq_cnt++;
3540                 card->perf_stats.cq_start_time = qeth_get_micros();
3541         }
3542
3543         for (i = first_element; i < first_element + count; ++i) {
3544                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3545                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3546                 int e = 0;
3547
3548                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3549                        buffer->element[e].addr) {
3550                         unsigned long phys_aob_addr;
3551
3552                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3553                         qeth_qdio_handle_aob(card, phys_aob_addr);
3554                         ++e;
3555                 }
3556                 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3557         }
3558         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3559                     card->qdio.c_q->next_buf_to_init,
3560                     count);
3561         if (rc) {
3562                 dev_warn(&card->gdev->dev,
3563                         "QDIO reported an error, rc=%i\n", rc);
3564                 QETH_CARD_TEXT(card, 2, "qcqherr");
3565         }
3566         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3567                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3568
3569         netif_wake_queue(card->dev);
3570
3571         if (card->options.performance_stats) {
3572                 int delta_t = qeth_get_micros();
3573                 delta_t -= card->perf_stats.cq_start_time;
3574                 card->perf_stats.cq_time += delta_t;
3575         }
3576 out:
3577         return;
3578 }
3579
3580 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3581                                     unsigned int qdio_err, int queue,
3582                                     int first_elem, int count,
3583                                     unsigned long card_ptr)
3584 {
3585         struct qeth_card *card = (struct qeth_card *)card_ptr;
3586
3587         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3588         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3589
3590         if (qeth_is_cq(card, queue))
3591                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3592         else if (qdio_err)
3593                 qeth_schedule_recovery(card);
3594 }
3595
3596 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3597                                      unsigned int qdio_error, int __queue,
3598                                      int first_element, int count,
3599                                      unsigned long card_ptr)
3600 {
3601         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3602         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3603         struct qeth_qdio_out_buffer *buffer;
3604         int i;
3605
3606         QETH_CARD_TEXT(card, 6, "qdouhdl");
3607         if (qdio_error & QDIO_ERROR_FATAL) {
3608                 QETH_CARD_TEXT(card, 2, "achkcond");
3609                 netif_stop_queue(card->dev);
3610                 qeth_schedule_recovery(card);
3611                 return;
3612         }
3613         if (card->options.performance_stats) {
3614                 card->perf_stats.outbound_handler_cnt++;
3615                 card->perf_stats.outbound_handler_start_time =
3616                         qeth_get_micros();
3617         }
3618         for (i = first_element; i < (first_element + count); ++i) {
3619                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3620                 buffer = queue->bufs[bidx];
3621                 qeth_handle_send_error(card, buffer, qdio_error);
3622
3623                 if (queue->bufstates &&
3624                     (queue->bufstates[bidx].flags &
3625                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3626                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3627
3628                         if (atomic_cmpxchg(&buffer->state,
3629                                            QETH_QDIO_BUF_PRIMED,
3630                                            QETH_QDIO_BUF_PENDING) ==
3631                                 QETH_QDIO_BUF_PRIMED) {
3632                                 qeth_notify_skbs(queue, buffer,
3633                                                  TX_NOTIFY_PENDING);
3634                         }
3635                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3636
3637                         /* prepare the queue slot for re-use: */
3638                         qeth_scrub_qdio_buffer(buffer->buffer,
3639                                                QETH_MAX_BUFFER_ELEMENTS(card));
3640                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3641                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3642                                 qeth_schedule_recovery(card);
3643                         }
3644                 } else {
3645                         if (card->options.cq == QETH_CQ_ENABLED) {
3646                                 enum iucv_tx_notify n;
3647
3648                                 n = qeth_compute_cq_notification(
3649                                         buffer->buffer->element[15].sflags, 0);
3650                                 qeth_notify_skbs(queue, buffer, n);
3651                         }
3652
3653                         qeth_clear_output_buffer(queue, buffer);
3654                 }
3655                 qeth_cleanup_handled_pending(queue, bidx, 0);
3656         }
3657         atomic_sub(count, &queue->used_buffers);
3658         /* check if we need to do something on this outbound queue */
3659         if (card->info.type != QETH_CARD_TYPE_IQD)
3660                 qeth_check_outbound_queue(queue);
3661
3662         netif_wake_queue(queue->card->dev);
3663         if (card->options.performance_stats)
3664                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3665                         card->perf_stats.outbound_handler_start_time;
3666 }
3667
3668 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3669 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3670 {
3671         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3672                 return 2;
3673         return queue_num;
3674 }
3675
3676 /**
3677  * Note: Function assumes that we have 4 outbound queues.
3678  */
3679 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3680                             int ipv)
3681 {
3682         __be16 *tci;
3683         u8 tos;
3684
3685         switch (card->qdio.do_prio_queueing) {
3686         case QETH_PRIO_Q_ING_TOS:
3687         case QETH_PRIO_Q_ING_PREC:
3688                 switch (ipv) {
3689                 case 4:
3690                         tos = ipv4_get_dsfield(ip_hdr(skb));
3691                         break;
3692                 case 6:
3693                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3694                         break;
3695                 default:
3696                         return card->qdio.default_out_queue;
3697                 }
3698                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3699                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3700                 if (tos & IPTOS_MINCOST)
3701                         return qeth_cut_iqd_prio(card, 3);
3702                 if (tos & IPTOS_RELIABILITY)
3703                         return 2;
3704                 if (tos & IPTOS_THROUGHPUT)
3705                         return 1;
3706                 if (tos & IPTOS_LOWDELAY)
3707                         return 0;
3708                 break;
3709         case QETH_PRIO_Q_ING_SKB:
3710                 if (skb->priority > 5)
3711                         return 0;
3712                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3713         case QETH_PRIO_Q_ING_VLAN:
3714                 tci = &((struct ethhdr *)skb->data)->h_proto;
3715                 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3716                         return qeth_cut_iqd_prio(card,
3717                         ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3718                 break;
3719         default:
3720                 break;
3721         }
3722         return card->qdio.default_out_queue;
3723 }
3724 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3725
3726 /**
3727  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3728  * @skb:                                SKB address
3729  *
3730  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3731  * fragmented part of the SKB. Returns zero for linear SKB.
3732  */
3733 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3734 {
3735         int cnt, elements = 0;
3736
3737         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3738                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3739
3740                 elements += qeth_get_elements_for_range(
3741                         (addr_t)skb_frag_address(frag),
3742                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3743         }
3744         return elements;
3745 }
3746
3747 /**
3748  * qeth_count_elements() -      Counts the number of QDIO buffer elements needed
3749  *                              to transmit an skb.
3750  * @skb:                        the skb to operate on.
3751  * @data_offset:                skip this part of the skb's linear data
3752  *
3753  * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3754  * skb's data (both its linear part and paged fragments).
3755  */
3756 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3757 {
3758         unsigned int elements = qeth_get_elements_for_frags(skb);
3759         addr_t end = (addr_t)skb->data + skb_headlen(skb);
3760         addr_t start = (addr_t)skb->data + data_offset;
3761
3762         if (start != end)
3763                 elements += qeth_get_elements_for_range(start, end);
3764         return elements;
3765 }
3766 EXPORT_SYMBOL_GPL(qeth_count_elements);
3767
3768 #define QETH_HDR_CACHE_OBJ_SIZE         (sizeof(struct qeth_hdr_tso) + \
3769                                          MAX_TCP_HEADER)
3770
3771 /**
3772  * qeth_add_hw_header() - add a HW header to an skb.
3773  * @skb: skb that the HW header should be added to.
3774  * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3775  *       it contains a valid pointer to a qeth_hdr.
3776  * @hdr_len: length of the HW header.
3777  * @proto_len: length of protocol headers that need to be in same page as the
3778  *             HW header.
3779  *
3780  * Returns the pushed length. If the header can't be pushed on
3781  * (eg. because it would cross a page boundary), it is allocated from
3782  * the cache instead and 0 is returned.
3783  * The number of needed buffer elements is returned in @elements.
3784  * Error to create the hdr is indicated by returning with < 0.
3785  */
3786 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb,
3787                        struct qeth_hdr **hdr, unsigned int hdr_len,
3788                        unsigned int proto_len, unsigned int *elements)
3789 {
3790         const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3791         const unsigned int contiguous = proto_len ? proto_len : 1;
3792         unsigned int __elements;
3793         addr_t start, end;
3794         bool push_ok;
3795         int rc;
3796
3797 check_layout:
3798         start = (addr_t)skb->data - hdr_len;
3799         end = (addr_t)skb->data;
3800
3801         if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3802                 /* Push HW header into same page as first protocol header. */
3803                 push_ok = true;
3804                 /* ... but TSO always needs a separate element for headers: */
3805                 if (skb_is_gso(skb))
3806                         __elements = 1 + qeth_count_elements(skb, proto_len);
3807                 else
3808                         __elements = qeth_count_elements(skb, 0);
3809         } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) {
3810                 /* Push HW header into a new page. */
3811                 push_ok = true;
3812                 __elements = 1 + qeth_count_elements(skb, 0);
3813         } else {
3814                 /* Use header cache, copy protocol headers up. */
3815                 push_ok = false;
3816                 __elements = 1 + qeth_count_elements(skb, proto_len);
3817         }
3818
3819         /* Compress skb to fit into one IO buffer: */
3820         if (__elements > max_elements) {
3821                 if (!skb_is_nonlinear(skb)) {
3822                         /* Drop it, no easy way of shrinking it further. */
3823                         QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3824                                          max_elements, __elements, skb->len);
3825                         return -E2BIG;
3826                 }
3827
3828                 rc = skb_linearize(skb);
3829                 if (card->options.performance_stats) {
3830                         if (rc)
3831                                 card->perf_stats.tx_linfail++;
3832                         else
3833                                 card->perf_stats.tx_lin++;
3834                 }
3835                 if (rc)
3836                         return rc;
3837
3838                 /* Linearization changed the layout, re-evaluate: */
3839                 goto check_layout;
3840         }
3841
3842         *elements = __elements;
3843         /* Add the header: */
3844         if (push_ok) {
3845                 *hdr = skb_push(skb, hdr_len);
3846                 return hdr_len;
3847         }
3848         /* fall back */
3849         if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3850                 return -E2BIG;
3851         *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3852         if (!*hdr)
3853                 return -ENOMEM;
3854         /* Copy protocol headers behind HW header: */
3855         skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3856         return 0;
3857 }
3858 EXPORT_SYMBOL_GPL(qeth_add_hw_header);
3859
3860 static void __qeth_fill_buffer(struct sk_buff *skb,
3861                                struct qeth_qdio_out_buffer *buf,
3862                                bool is_first_elem, unsigned int offset)
3863 {
3864         struct qdio_buffer *buffer = buf->buffer;
3865         int element = buf->next_element_to_fill;
3866         int length = skb_headlen(skb) - offset;
3867         char *data = skb->data + offset;
3868         int length_here, cnt;
3869
3870         /* map linear part into buffer element(s) */
3871         while (length > 0) {
3872                 /* length_here is the remaining amount of data in this page */
3873                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3874                 if (length < length_here)
3875                         length_here = length;
3876
3877                 buffer->element[element].addr = data;
3878                 buffer->element[element].length = length_here;
3879                 length -= length_here;
3880                 if (is_first_elem) {
3881                         is_first_elem = false;
3882                         if (length || skb_is_nonlinear(skb))
3883                                 /* skb needs additional elements */
3884                                 buffer->element[element].eflags =
3885                                         SBAL_EFLAGS_FIRST_FRAG;
3886                         else
3887                                 buffer->element[element].eflags = 0;
3888                 } else {
3889                         buffer->element[element].eflags =
3890                                 SBAL_EFLAGS_MIDDLE_FRAG;
3891                 }
3892                 data += length_here;
3893                 element++;
3894         }
3895
3896         /* map page frags into buffer element(s) */
3897         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3898                 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3899
3900                 data = skb_frag_address(frag);
3901                 length = skb_frag_size(frag);
3902                 while (length > 0) {
3903                         length_here = PAGE_SIZE -
3904                                 ((unsigned long) data % PAGE_SIZE);
3905                         if (length < length_here)
3906                                 length_here = length;
3907
3908                         buffer->element[element].addr = data;
3909                         buffer->element[element].length = length_here;
3910                         buffer->element[element].eflags =
3911                                 SBAL_EFLAGS_MIDDLE_FRAG;
3912                         length -= length_here;
3913                         data += length_here;
3914                         element++;
3915                 }
3916         }
3917
3918         if (buffer->element[element - 1].eflags)
3919                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3920         buf->next_element_to_fill = element;
3921 }
3922
3923 /**
3924  * qeth_fill_buffer() - map skb into an output buffer
3925  * @queue:      QDIO queue to submit the buffer on
3926  * @buf:        buffer to transport the skb
3927  * @skb:        skb to map into the buffer
3928  * @hdr:        qeth_hdr for this skb. Either at skb->data, or allocated
3929  *              from qeth_core_header_cache.
3930  * @offset:     when mapping the skb, start at skb->data + offset
3931  * @hd_len:     if > 0, build a dedicated header element of this size
3932  */
3933 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3934                             struct qeth_qdio_out_buffer *buf,
3935                             struct sk_buff *skb, struct qeth_hdr *hdr,
3936                             unsigned int offset, unsigned int hd_len)
3937 {
3938         struct qdio_buffer *buffer = buf->buffer;
3939         bool is_first_elem = true;
3940         int flush_cnt = 0;
3941
3942         __skb_queue_tail(&buf->skb_list, skb);
3943
3944         /* build dedicated header element */
3945         if (hd_len) {
3946                 int element = buf->next_element_to_fill;
3947                 is_first_elem = false;
3948
3949                 buffer->element[element].addr = hdr;
3950                 buffer->element[element].length = hd_len;
3951                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3952                 /* remember to free cache-allocated qeth_hdr: */
3953                 buf->is_header[element] = ((void *)hdr != skb->data);
3954                 buf->next_element_to_fill++;
3955         }
3956
3957         __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3958
3959         if (!queue->do_pack) {
3960                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3961                 /* set state to PRIMED -> will be flushed */
3962                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3963                 flush_cnt = 1;
3964         } else {
3965                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3966                 if (queue->card->options.performance_stats)
3967                         queue->card->perf_stats.skbs_sent_pack++;
3968                 if (buf->next_element_to_fill >=
3969                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3970                         /*
3971                          * packed buffer if full -> set state PRIMED
3972                          * -> will be flushed
3973                          */
3974                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3975                         flush_cnt = 1;
3976                 }
3977         }
3978         return flush_cnt;
3979 }
3980
3981 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3982                              struct qeth_hdr *hdr, unsigned int offset,
3983                              unsigned int hd_len)
3984 {
3985         int index = queue->next_buf_to_fill;
3986         struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
3987
3988         /*
3989          * check if buffer is empty to make sure that we do not 'overtake'
3990          * ourselves and try to fill a buffer that is already primed
3991          */
3992         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3993                 return -EBUSY;
3994         queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
3995         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3996         qeth_flush_buffers(queue, index, 1);
3997         return 0;
3998 }
3999 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4000
4001 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4002                         struct sk_buff *skb, struct qeth_hdr *hdr,
4003                         unsigned int offset, unsigned int hd_len,
4004                         int elements_needed)
4005 {
4006         struct qeth_qdio_out_buffer *buffer;
4007         int start_index;
4008         int flush_count = 0;
4009         int do_pack = 0;
4010         int tmp;
4011         int rc = 0;
4012
4013         /* spin until we get the queue ... */
4014         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4015                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4016         start_index = queue->next_buf_to_fill;
4017         buffer = queue->bufs[queue->next_buf_to_fill];
4018         /*
4019          * check if buffer is empty to make sure that we do not 'overtake'
4020          * ourselves and try to fill a buffer that is already primed
4021          */
4022         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4023                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4024                 return -EBUSY;
4025         }
4026         /* check if we need to switch packing state of this queue */
4027         qeth_switch_to_packing_if_needed(queue);
4028         if (queue->do_pack) {
4029                 do_pack = 1;
4030                 /* does packet fit in current buffer? */
4031                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4032                     buffer->next_element_to_fill) < elements_needed) {
4033                         /* ... no -> set state PRIMED */
4034                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4035                         flush_count++;
4036                         queue->next_buf_to_fill =
4037                                 (queue->next_buf_to_fill + 1) %
4038                                 QDIO_MAX_BUFFERS_PER_Q;
4039                         buffer = queue->bufs[queue->next_buf_to_fill];
4040                         /* we did a step forward, so check buffer state
4041                          * again */
4042                         if (atomic_read(&buffer->state) !=
4043                             QETH_QDIO_BUF_EMPTY) {
4044                                 qeth_flush_buffers(queue, start_index,
4045                                                            flush_count);
4046                                 atomic_set(&queue->state,
4047                                                 QETH_OUT_Q_UNLOCKED);
4048                                 rc = -EBUSY;
4049                                 goto out;
4050                         }
4051                 }
4052         }
4053         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4054         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4055                                   QDIO_MAX_BUFFERS_PER_Q;
4056         flush_count += tmp;
4057         if (flush_count)
4058                 qeth_flush_buffers(queue, start_index, flush_count);
4059         else if (!atomic_read(&queue->set_pci_flags_count))
4060                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4061         /*
4062          * queue->state will go from LOCKED -> UNLOCKED or from
4063          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4064          * (switch packing state or flush buffer to get another pci flag out).
4065          * In that case we will enter this loop
4066          */
4067         while (atomic_dec_return(&queue->state)) {
4068                 start_index = queue->next_buf_to_fill;
4069                 /* check if we can go back to non-packing state */
4070                 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4071                 /*
4072                  * check if we need to flush a packing buffer to get a pci
4073                  * flag out on the queue
4074                  */
4075                 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4076                         tmp = qeth_prep_flush_pack_buffer(queue);
4077                 if (tmp) {
4078                         qeth_flush_buffers(queue, start_index, tmp);
4079                         flush_count += tmp;
4080                 }
4081         }
4082 out:
4083         /* at this point the queue is UNLOCKED again */
4084         if (queue->card->options.performance_stats && do_pack)
4085                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4086
4087         return rc;
4088 }
4089 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4090
4091 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4092               struct qeth_qdio_out_q *queue, int ipv, int cast_type,
4093               void (*fill_header)(struct qeth_card *card, struct qeth_hdr *hdr,
4094                                   struct sk_buff *skb, int ipv, int cast_type,
4095                                   unsigned int data_len))
4096 {
4097         const unsigned int proto_len = IS_IQD(card) ? ETH_HLEN : 0;
4098         const unsigned int hw_hdr_len = sizeof(struct qeth_hdr);
4099         unsigned int frame_len = skb->len;
4100         unsigned int data_offset = 0;
4101         struct qeth_hdr *hdr = NULL;
4102         unsigned int hd_len = 0;
4103         unsigned int elements;
4104         int push_len, rc;
4105         bool is_sg;
4106
4107         rc = skb_cow_head(skb, hw_hdr_len);
4108         if (rc)
4109                 return rc;
4110
4111         push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len,
4112                                       &elements);
4113         if (push_len < 0)
4114                 return push_len;
4115         if (!push_len) {
4116                 /* HW header needs its own buffer element. */
4117                 hd_len = hw_hdr_len + proto_len;
4118                 data_offset = proto_len;
4119         }
4120         memset(hdr, 0, hw_hdr_len);
4121         fill_header(card, hdr, skb, ipv, cast_type, frame_len);
4122
4123         is_sg = skb_is_nonlinear(skb);
4124         if (IS_IQD(card)) {
4125                 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
4126                                               hd_len);
4127         } else {
4128                 /* TODO: drop skb_orphan() once TX completion is fast enough */
4129                 skb_orphan(skb);
4130                 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4131                                          hd_len, elements);
4132         }
4133
4134         if (!rc) {
4135                 if (card->options.performance_stats) {
4136                         card->perf_stats.buf_elements_sent += elements;
4137                         if (is_sg)
4138                                 card->perf_stats.sg_skbs_sent++;
4139                 }
4140         } else {
4141                 if (!push_len)
4142                         kmem_cache_free(qeth_core_header_cache, hdr);
4143                 if (rc == -EBUSY)
4144                         /* roll back to ETH header */
4145                         skb_pull(skb, push_len);
4146         }
4147         return rc;
4148 }
4149 EXPORT_SYMBOL_GPL(qeth_xmit);
4150
4151 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4152                 struct qeth_reply *reply, unsigned long data)
4153 {
4154         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4155         struct qeth_ipacmd_setadpparms *setparms;
4156
4157         QETH_CARD_TEXT(card, 4, "prmadpcb");
4158
4159         setparms = &(cmd->data.setadapterparms);
4160         if (qeth_setadpparms_inspect_rc(cmd)) {
4161                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4162                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4163         }
4164         card->info.promisc_mode = setparms->data.mode;
4165         return 0;
4166 }
4167
4168 void qeth_setadp_promisc_mode(struct qeth_card *card)
4169 {
4170         enum qeth_ipa_promisc_modes mode;
4171         struct net_device *dev = card->dev;
4172         struct qeth_cmd_buffer *iob;
4173         struct qeth_ipa_cmd *cmd;
4174
4175         QETH_CARD_TEXT(card, 4, "setprom");
4176
4177         if (((dev->flags & IFF_PROMISC) &&
4178              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4179             (!(dev->flags & IFF_PROMISC) &&
4180              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4181                 return;
4182         mode = SET_PROMISC_MODE_OFF;
4183         if (dev->flags & IFF_PROMISC)
4184                 mode = SET_PROMISC_MODE_ON;
4185         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4186
4187         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4188                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4189         if (!iob)
4190                 return;
4191         cmd = __ipa_cmd(iob);
4192         cmd->data.setadapterparms.data.mode = mode;
4193         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4194 }
4195 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4196
4197 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4198 {
4199         struct qeth_card *card;
4200
4201         card = dev->ml_priv;
4202
4203         QETH_CARD_TEXT(card, 5, "getstat");
4204
4205         return &card->stats;
4206 }
4207 EXPORT_SYMBOL_GPL(qeth_get_stats);
4208
4209 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4210                 struct qeth_reply *reply, unsigned long data)
4211 {
4212         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4213
4214         QETH_CARD_TEXT(card, 4, "chgmaccb");
4215         if (qeth_setadpparms_inspect_rc(cmd))
4216                 return 0;
4217
4218         if (IS_LAYER3(card) || !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4219                 ether_addr_copy(card->dev->dev_addr,
4220                                 cmd->data.setadapterparms.data.change_addr.addr);
4221                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4222         }
4223         return 0;
4224 }
4225
4226 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4227 {
4228         int rc;
4229         struct qeth_cmd_buffer *iob;
4230         struct qeth_ipa_cmd *cmd;
4231
4232         QETH_CARD_TEXT(card, 4, "chgmac");
4233
4234         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4235                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4236                                    sizeof(struct qeth_change_addr));
4237         if (!iob)
4238                 return -ENOMEM;
4239         cmd = __ipa_cmd(iob);
4240         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4241         cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4242         ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4243                         card->dev->dev_addr);
4244         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4245                                NULL);
4246         return rc;
4247 }
4248 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4249
4250 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4251                 struct qeth_reply *reply, unsigned long data)
4252 {
4253         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4254         struct qeth_set_access_ctrl *access_ctrl_req;
4255         int fallback = *(int *)reply->param;
4256
4257         QETH_CARD_TEXT(card, 4, "setaccb");
4258         if (cmd->hdr.return_code)
4259                 return 0;
4260         qeth_setadpparms_inspect_rc(cmd);
4261
4262         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4263         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4264         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4265         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4266                 cmd->data.setadapterparms.hdr.return_code);
4267         if (cmd->data.setadapterparms.hdr.return_code !=
4268                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4269                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4270                                 card->gdev->dev.kobj.name,
4271                                 access_ctrl_req->subcmd_code,
4272                                 cmd->data.setadapterparms.hdr.return_code);
4273         switch (cmd->data.setadapterparms.hdr.return_code) {
4274         case SET_ACCESS_CTRL_RC_SUCCESS:
4275                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4276                         dev_info(&card->gdev->dev,
4277                             "QDIO data connection isolation is deactivated\n");
4278                 } else {
4279                         dev_info(&card->gdev->dev,
4280                             "QDIO data connection isolation is activated\n");
4281                 }
4282                 break;
4283         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4284                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4285                                 "deactivated\n", dev_name(&card->gdev->dev));
4286                 if (fallback)
4287                         card->options.isolation = card->options.prev_isolation;
4288                 break;
4289         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4290                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4291                                 " activated\n", dev_name(&card->gdev->dev));
4292                 if (fallback)
4293                         card->options.isolation = card->options.prev_isolation;
4294                 break;
4295         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4296                 dev_err(&card->gdev->dev, "Adapter does not "
4297                         "support QDIO data connection isolation\n");
4298                 break;
4299         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4300                 dev_err(&card->gdev->dev,
4301                         "Adapter is dedicated. "
4302                         "QDIO data connection isolation not supported\n");
4303                 if (fallback)
4304                         card->options.isolation = card->options.prev_isolation;
4305                 break;
4306         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4307                 dev_err(&card->gdev->dev,
4308                         "TSO does not permit QDIO data connection isolation\n");
4309                 if (fallback)
4310                         card->options.isolation = card->options.prev_isolation;
4311                 break;
4312         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4313                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4314                         "support reflective relay mode\n");
4315                 if (fallback)
4316                         card->options.isolation = card->options.prev_isolation;
4317                 break;
4318         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4319                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4320                                         "enabled at the adjacent switch port");
4321                 if (fallback)
4322                         card->options.isolation = card->options.prev_isolation;
4323                 break;
4324         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4325                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4326                                         "at the adjacent switch failed\n");
4327                 break;
4328         default:
4329                 /* this should never happen */
4330                 if (fallback)
4331                         card->options.isolation = card->options.prev_isolation;
4332                 break;
4333         }
4334         return 0;
4335 }
4336
4337 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4338                 enum qeth_ipa_isolation_modes isolation, int fallback)
4339 {
4340         int rc;
4341         struct qeth_cmd_buffer *iob;
4342         struct qeth_ipa_cmd *cmd;
4343         struct qeth_set_access_ctrl *access_ctrl_req;
4344
4345         QETH_CARD_TEXT(card, 4, "setacctl");
4346
4347         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4348         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4349
4350         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4351                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4352                                    sizeof(struct qeth_set_access_ctrl));
4353         if (!iob)
4354                 return -ENOMEM;
4355         cmd = __ipa_cmd(iob);
4356         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4357         access_ctrl_req->subcmd_code = isolation;
4358
4359         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4360                                &fallback);
4361         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4362         return rc;
4363 }
4364
4365 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4366 {
4367         int rc = 0;
4368
4369         QETH_CARD_TEXT(card, 4, "setactlo");
4370
4371         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4372              card->info.type == QETH_CARD_TYPE_OSX) &&
4373              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4374                 rc = qeth_setadpparms_set_access_ctrl(card,
4375                         card->options.isolation, fallback);
4376                 if (rc) {
4377                         QETH_DBF_MESSAGE(3,
4378                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4379                                 card->gdev->dev.kobj.name,
4380                                 rc);
4381                         rc = -EOPNOTSUPP;
4382                 }
4383         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4384                 card->options.isolation = ISOLATION_MODE_NONE;
4385
4386                 dev_err(&card->gdev->dev, "Adapter does not "
4387                         "support QDIO data connection isolation\n");
4388                 rc = -EOPNOTSUPP;
4389         }
4390         return rc;
4391 }
4392 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4393
4394 void qeth_tx_timeout(struct net_device *dev)
4395 {
4396         struct qeth_card *card;
4397
4398         card = dev->ml_priv;
4399         QETH_CARD_TEXT(card, 4, "txtimeo");
4400         card->stats.tx_errors++;
4401         qeth_schedule_recovery(card);
4402 }
4403 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4404
4405 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4406 {
4407         struct qeth_card *card = dev->ml_priv;
4408         int rc = 0;
4409
4410         switch (regnum) {
4411         case MII_BMCR: /* Basic mode control register */
4412                 rc = BMCR_FULLDPLX;
4413                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4414                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4415                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4416                         rc |= BMCR_SPEED100;
4417                 break;
4418         case MII_BMSR: /* Basic mode status register */
4419                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4420                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4421                      BMSR_100BASE4;
4422                 break;
4423         case MII_PHYSID1: /* PHYS ID 1 */
4424                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4425                      dev->dev_addr[2];
4426                 rc = (rc >> 5) & 0xFFFF;
4427                 break;
4428         case MII_PHYSID2: /* PHYS ID 2 */
4429                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4430                 break;
4431         case MII_ADVERTISE: /* Advertisement control reg */
4432                 rc = ADVERTISE_ALL;
4433                 break;
4434         case MII_LPA: /* Link partner ability reg */
4435                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4436                      LPA_100BASE4 | LPA_LPACK;
4437                 break;
4438         case MII_EXPANSION: /* Expansion register */
4439                 break;
4440         case MII_DCOUNTER: /* disconnect counter */
4441                 break;
4442         case MII_FCSCOUNTER: /* false carrier counter */
4443                 break;
4444         case MII_NWAYTEST: /* N-way auto-neg test register */
4445                 break;
4446         case MII_RERRCOUNTER: /* rx error counter */
4447                 rc = card->stats.rx_errors;
4448                 break;
4449         case MII_SREVISION: /* silicon revision */
4450                 break;
4451         case MII_RESV1: /* reserved 1 */
4452                 break;
4453         case MII_LBRERROR: /* loopback, rx, bypass error */
4454                 break;
4455         case MII_PHYADDR: /* physical address */
4456                 break;
4457         case MII_RESV2: /* reserved 2 */
4458                 break;
4459         case MII_TPISTATUS: /* TPI status for 10mbps */
4460                 break;
4461         case MII_NCONFIG: /* network interface config */
4462                 break;
4463         default:
4464                 break;
4465         }
4466         return rc;
4467 }
4468
4469 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4470                 struct qeth_cmd_buffer *iob, int len,
4471                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4472                         unsigned long),
4473                 void *reply_param)
4474 {
4475         u16 s1, s2;
4476
4477         QETH_CARD_TEXT(card, 4, "sendsnmp");
4478
4479         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4480         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4481                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4482         /* adjust PDU length fields in IPA_PDU_HEADER */
4483         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4484         s2 = (u32) len;
4485         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4486         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4487         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4488         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4489         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4490                                       reply_cb, reply_param);
4491 }
4492
4493 static int qeth_snmp_command_cb(struct qeth_card *card,
4494                 struct qeth_reply *reply, unsigned long sdata)
4495 {
4496         struct qeth_ipa_cmd *cmd;
4497         struct qeth_arp_query_info *qinfo;
4498         struct qeth_snmp_cmd *snmp;
4499         unsigned char *data;
4500         __u16 data_len;
4501
4502         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4503
4504         cmd = (struct qeth_ipa_cmd *) sdata;
4505         data = (unsigned char *)((char *)cmd - reply->offset);
4506         qinfo = (struct qeth_arp_query_info *) reply->param;
4507         snmp = &cmd->data.setadapterparms.data.snmp;
4508
4509         if (cmd->hdr.return_code) {
4510                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4511                 return 0;
4512         }
4513         if (cmd->data.setadapterparms.hdr.return_code) {
4514                 cmd->hdr.return_code =
4515                         cmd->data.setadapterparms.hdr.return_code;
4516                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4517                 return 0;
4518         }
4519         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4520         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4521                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4522         else
4523                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4524
4525         /* check if there is enough room in userspace */
4526         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4527                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4528                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4529                 return 0;
4530         }
4531         QETH_CARD_TEXT_(card, 4, "snore%i",
4532                        cmd->data.setadapterparms.hdr.used_total);
4533         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4534                 cmd->data.setadapterparms.hdr.seq_no);
4535         /*copy entries to user buffer*/
4536         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4537                 memcpy(qinfo->udata + qinfo->udata_offset,
4538                        (char *)snmp,
4539                        data_len + offsetof(struct qeth_snmp_cmd, data));
4540                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4541         } else {
4542                 memcpy(qinfo->udata + qinfo->udata_offset,
4543                        (char *)&snmp->request, data_len);
4544         }
4545         qinfo->udata_offset += data_len;
4546         /* check if all replies received ... */
4547                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4548                                cmd->data.setadapterparms.hdr.used_total);
4549                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4550                                cmd->data.setadapterparms.hdr.seq_no);
4551         if (cmd->data.setadapterparms.hdr.seq_no <
4552             cmd->data.setadapterparms.hdr.used_total)
4553                 return 1;
4554         return 0;
4555 }
4556
4557 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4558 {
4559         struct qeth_cmd_buffer *iob;
4560         struct qeth_ipa_cmd *cmd;
4561         struct qeth_snmp_ureq *ureq;
4562         unsigned int req_len;
4563         struct qeth_arp_query_info qinfo = {0, };
4564         int rc = 0;
4565
4566         QETH_CARD_TEXT(card, 3, "snmpcmd");
4567
4568         if (card->info.guestlan)
4569                 return -EOPNOTSUPP;
4570
4571         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4572             IS_LAYER3(card))
4573                 return -EOPNOTSUPP;
4574
4575         /* skip 4 bytes (data_len struct member) to get req_len */
4576         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4577                 return -EFAULT;
4578         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4579                        sizeof(struct qeth_ipacmd_hdr) -
4580                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4581                 return -EINVAL;
4582         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4583         if (IS_ERR(ureq)) {
4584                 QETH_CARD_TEXT(card, 2, "snmpnome");
4585                 return PTR_ERR(ureq);
4586         }
4587         qinfo.udata_len = ureq->hdr.data_len;
4588         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4589         if (!qinfo.udata) {
4590                 kfree(ureq);
4591                 return -ENOMEM;
4592         }
4593         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4594
4595         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4596                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4597         if (!iob) {
4598                 rc = -ENOMEM;
4599                 goto out;
4600         }
4601         cmd = __ipa_cmd(iob);
4602         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4603         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4604                                     qeth_snmp_command_cb, (void *)&qinfo);
4605         if (rc)
4606                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4607                            QETH_CARD_IFNAME(card), rc);
4608         else {
4609                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4610                         rc = -EFAULT;
4611         }
4612 out:
4613         kfree(ureq);
4614         kfree(qinfo.udata);
4615         return rc;
4616 }
4617
4618 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4619                 struct qeth_reply *reply, unsigned long data)
4620 {
4621         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4622         struct qeth_qoat_priv *priv;
4623         char *resdata;
4624         int resdatalen;
4625
4626         QETH_CARD_TEXT(card, 3, "qoatcb");
4627         if (qeth_setadpparms_inspect_rc(cmd))
4628                 return 0;
4629
4630         priv = (struct qeth_qoat_priv *)reply->param;
4631         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4632         resdata = (char *)data + 28;
4633
4634         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4635                 cmd->hdr.return_code = IPA_RC_FFFF;
4636                 return 0;
4637         }
4638
4639         memcpy((priv->buffer + priv->response_len), resdata,
4640                 resdatalen);
4641         priv->response_len += resdatalen;
4642
4643         if (cmd->data.setadapterparms.hdr.seq_no <
4644             cmd->data.setadapterparms.hdr.used_total)
4645                 return 1;
4646         return 0;
4647 }
4648
4649 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4650 {
4651         int rc = 0;
4652         struct qeth_cmd_buffer *iob;
4653         struct qeth_ipa_cmd *cmd;
4654         struct qeth_query_oat *oat_req;
4655         struct qeth_query_oat_data oat_data;
4656         struct qeth_qoat_priv priv;
4657         void __user *tmp;
4658
4659         QETH_CARD_TEXT(card, 3, "qoatcmd");
4660
4661         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4662                 rc = -EOPNOTSUPP;
4663                 goto out;
4664         }
4665
4666         if (copy_from_user(&oat_data, udata,
4667             sizeof(struct qeth_query_oat_data))) {
4668                         rc = -EFAULT;
4669                         goto out;
4670         }
4671
4672         priv.buffer_len = oat_data.buffer_len;
4673         priv.response_len = 0;
4674         priv.buffer = vzalloc(oat_data.buffer_len);
4675         if (!priv.buffer) {
4676                 rc = -ENOMEM;
4677                 goto out;
4678         }
4679
4680         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4681                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4682                                    sizeof(struct qeth_query_oat));
4683         if (!iob) {
4684                 rc = -ENOMEM;
4685                 goto out_free;
4686         }
4687         cmd = __ipa_cmd(iob);
4688         oat_req = &cmd->data.setadapterparms.data.query_oat;
4689         oat_req->subcmd_code = oat_data.command;
4690
4691         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4692                                &priv);
4693         if (!rc) {
4694                 if (is_compat_task())
4695                         tmp = compat_ptr(oat_data.ptr);
4696                 else
4697                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4698
4699                 if (copy_to_user(tmp, priv.buffer,
4700                     priv.response_len)) {
4701                         rc = -EFAULT;
4702                         goto out_free;
4703                 }
4704
4705                 oat_data.response_len = priv.response_len;
4706
4707                 if (copy_to_user(udata, &oat_data,
4708                     sizeof(struct qeth_query_oat_data)))
4709                         rc = -EFAULT;
4710         } else
4711                 if (rc == IPA_RC_FFFF)
4712                         rc = -EFAULT;
4713
4714 out_free:
4715         vfree(priv.buffer);
4716 out:
4717         return rc;
4718 }
4719
4720 static int qeth_query_card_info_cb(struct qeth_card *card,
4721                                    struct qeth_reply *reply, unsigned long data)
4722 {
4723         struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4724         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4725         struct qeth_query_card_info *card_info;
4726
4727         QETH_CARD_TEXT(card, 2, "qcrdincb");
4728         if (qeth_setadpparms_inspect_rc(cmd))
4729                 return 0;
4730
4731         card_info = &cmd->data.setadapterparms.data.card_info;
4732         carrier_info->card_type = card_info->card_type;
4733         carrier_info->port_mode = card_info->port_mode;
4734         carrier_info->port_speed = card_info->port_speed;
4735         return 0;
4736 }
4737
4738 static int qeth_query_card_info(struct qeth_card *card,
4739                                 struct carrier_info *carrier_info)
4740 {
4741         struct qeth_cmd_buffer *iob;
4742
4743         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4744         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4745                 return -EOPNOTSUPP;
4746         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4747                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4748         if (!iob)
4749                 return -ENOMEM;
4750         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4751                                         (void *)carrier_info);
4752 }
4753
4754 /**
4755  * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4756  * @card: pointer to a qeth_card
4757  *
4758  * Returns
4759  *      0, if a MAC address has been set for the card's netdevice
4760  *      a return code, for various error conditions
4761  */
4762 int qeth_vm_request_mac(struct qeth_card *card)
4763 {
4764         struct diag26c_mac_resp *response;
4765         struct diag26c_mac_req *request;
4766         struct ccw_dev_id id;
4767         int rc;
4768
4769         QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4770
4771         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4772         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4773         if (!request || !response) {
4774                 rc = -ENOMEM;
4775                 goto out;
4776         }
4777
4778         ccw_device_get_id(CARD_DDEV(card), &id);
4779         request->resp_buf_len = sizeof(*response);
4780         request->resp_version = DIAG26C_VERSION2;
4781         request->op_code = DIAG26C_GET_MAC;
4782         request->devno = id.devno;
4783
4784         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4785         rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4786         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4787         if (rc)
4788                 goto out;
4789         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4790
4791         if (request->resp_buf_len < sizeof(*response) ||
4792             response->version != request->resp_version) {
4793                 rc = -EIO;
4794                 QETH_DBF_TEXT(SETUP, 2, "badresp");
4795                 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4796                              sizeof(request->resp_buf_len));
4797         } else if (!is_valid_ether_addr(response->mac)) {
4798                 rc = -EINVAL;
4799                 QETH_DBF_TEXT(SETUP, 2, "badmac");
4800                 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4801         } else {
4802                 ether_addr_copy(card->dev->dev_addr, response->mac);
4803         }
4804
4805 out:
4806         kfree(response);
4807         kfree(request);
4808         return rc;
4809 }
4810 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4811
4812 static int qeth_get_qdio_q_format(struct qeth_card *card)
4813 {
4814         if (card->info.type == QETH_CARD_TYPE_IQD)
4815                 return QDIO_IQDIO_QFMT;
4816         else
4817                 return QDIO_QETH_QFMT;
4818 }
4819
4820 static void qeth_determine_capabilities(struct qeth_card *card)
4821 {
4822         int rc;
4823         int length;
4824         char *prcd;
4825         struct ccw_device *ddev;
4826         int ddev_offline = 0;
4827
4828         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4829         ddev = CARD_DDEV(card);
4830         if (!ddev->online) {
4831                 ddev_offline = 1;
4832                 rc = ccw_device_set_online(ddev);
4833                 if (rc) {
4834                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4835                         goto out;
4836                 }
4837         }
4838
4839         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4840         if (rc) {
4841                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4842                         dev_name(&card->gdev->dev), rc);
4843                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4844                 goto out_offline;
4845         }
4846         qeth_configure_unitaddr(card, prcd);
4847         if (ddev_offline)
4848                 qeth_configure_blkt_default(card, prcd);
4849         kfree(prcd);
4850
4851         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4852         if (rc)
4853                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4854
4855         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4856         QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4857         QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4858         QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4859         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4860         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4861             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4862             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4863                 dev_info(&card->gdev->dev,
4864                         "Completion Queueing supported\n");
4865         } else {
4866                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4867         }
4868
4869
4870 out_offline:
4871         if (ddev_offline == 1)
4872                 ccw_device_set_offline(ddev);
4873 out:
4874         return;
4875 }
4876
4877 static void qeth_qdio_establish_cq(struct qeth_card *card,
4878                                    struct qdio_buffer **in_sbal_ptrs,
4879                                    void (**queue_start_poll)
4880                                         (struct ccw_device *, int,
4881                                          unsigned long))
4882 {
4883         int i;
4884
4885         if (card->options.cq == QETH_CQ_ENABLED) {
4886                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4887                              (card->qdio.no_in_queues - 1);
4888                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4889                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4890                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4891                 }
4892
4893                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4894         }
4895 }
4896
4897 static int qeth_qdio_establish(struct qeth_card *card)
4898 {
4899         struct qdio_initialize init_data;
4900         char *qib_param_field;
4901         struct qdio_buffer **in_sbal_ptrs;
4902         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4903         struct qdio_buffer **out_sbal_ptrs;
4904         int i, j, k;
4905         int rc = 0;
4906
4907         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4908
4909         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4910                                   GFP_KERNEL);
4911         if (!qib_param_field) {
4912                 rc =  -ENOMEM;
4913                 goto out_free_nothing;
4914         }
4915
4916         qeth_create_qib_param_field(card, qib_param_field);
4917         qeth_create_qib_param_field_blkt(card, qib_param_field);
4918
4919         in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4920                                sizeof(void *),
4921                                GFP_KERNEL);
4922         if (!in_sbal_ptrs) {
4923                 rc = -ENOMEM;
4924                 goto out_free_qib_param;
4925         }
4926         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4927                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4928                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4929         }
4930
4931         queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4932                                    GFP_KERNEL);
4933         if (!queue_start_poll) {
4934                 rc = -ENOMEM;
4935                 goto out_free_in_sbals;
4936         }
4937         for (i = 0; i < card->qdio.no_in_queues; ++i)
4938                 queue_start_poll[i] = qeth_qdio_start_poll;
4939
4940         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4941
4942         out_sbal_ptrs =
4943                 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4944                         sizeof(void *),
4945                         GFP_KERNEL);
4946         if (!out_sbal_ptrs) {
4947                 rc = -ENOMEM;
4948                 goto out_free_queue_start_poll;
4949         }
4950         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4951                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4952                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4953                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4954                 }
4955
4956         memset(&init_data, 0, sizeof(struct qdio_initialize));
4957         init_data.cdev                   = CARD_DDEV(card);
4958         init_data.q_format               = qeth_get_qdio_q_format(card);
4959         init_data.qib_param_field_format = 0;
4960         init_data.qib_param_field        = qib_param_field;
4961         init_data.no_input_qs            = card->qdio.no_in_queues;
4962         init_data.no_output_qs           = card->qdio.no_out_queues;
4963         init_data.input_handler          = qeth_qdio_input_handler;
4964         init_data.output_handler         = qeth_qdio_output_handler;
4965         init_data.queue_start_poll_array = queue_start_poll;
4966         init_data.int_parm               = (unsigned long) card;
4967         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4968         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4969         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4970         init_data.scan_threshold =
4971                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4972
4973         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4974                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4975                 rc = qdio_allocate(&init_data);
4976                 if (rc) {
4977                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4978                         goto out;
4979                 }
4980                 rc = qdio_establish(&init_data);
4981                 if (rc) {
4982                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4983                         qdio_free(CARD_DDEV(card));
4984                 }
4985         }
4986
4987         switch (card->options.cq) {
4988         case QETH_CQ_ENABLED:
4989                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4990                 break;
4991         case QETH_CQ_DISABLED:
4992                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4993                 break;
4994         default:
4995                 break;
4996         }
4997 out:
4998         kfree(out_sbal_ptrs);
4999 out_free_queue_start_poll:
5000         kfree(queue_start_poll);
5001 out_free_in_sbals:
5002         kfree(in_sbal_ptrs);
5003 out_free_qib_param:
5004         kfree(qib_param_field);
5005 out_free_nothing:
5006         return rc;
5007 }
5008
5009 static void qeth_core_free_card(struct qeth_card *card)
5010 {
5011         QETH_DBF_TEXT(SETUP, 2, "freecrd");
5012         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5013         qeth_clean_channel(&card->read);
5014         qeth_clean_channel(&card->write);
5015         qeth_clean_channel(&card->data);
5016         qeth_free_qdio_buffers(card);
5017         unregister_service_level(&card->qeth_service_level);
5018         dev_set_drvdata(&card->gdev->dev, NULL);
5019         kfree(card);
5020 }
5021
5022 void qeth_trace_features(struct qeth_card *card)
5023 {
5024         QETH_CARD_TEXT(card, 2, "features");
5025         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5026         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5027         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5028         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5029                       sizeof(card->info.diagass_support));
5030 }
5031 EXPORT_SYMBOL_GPL(qeth_trace_features);
5032
5033 static struct ccw_device_id qeth_ids[] = {
5034         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5035                                         .driver_info = QETH_CARD_TYPE_OSD},
5036         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5037                                         .driver_info = QETH_CARD_TYPE_IQD},
5038         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5039                                         .driver_info = QETH_CARD_TYPE_OSN},
5040         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5041                                         .driver_info = QETH_CARD_TYPE_OSM},
5042         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5043                                         .driver_info = QETH_CARD_TYPE_OSX},
5044         {},
5045 };
5046 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5047
5048 static struct ccw_driver qeth_ccw_driver = {
5049         .driver = {
5050                 .owner = THIS_MODULE,
5051                 .name = "qeth",
5052         },
5053         .ids = qeth_ids,
5054         .probe = ccwgroup_probe_ccwdev,
5055         .remove = ccwgroup_remove_ccwdev,
5056 };
5057
5058 int qeth_core_hardsetup_card(struct qeth_card *card)
5059 {
5060         int retries = 3;
5061         int rc;
5062
5063         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5064         atomic_set(&card->force_alloc_skb, 0);
5065         qeth_update_from_chp_desc(card);
5066 retry:
5067         if (retries < 3)
5068                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5069                         dev_name(&card->gdev->dev));
5070         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5071         ccw_device_set_offline(CARD_DDEV(card));
5072         ccw_device_set_offline(CARD_WDEV(card));
5073         ccw_device_set_offline(CARD_RDEV(card));
5074         qdio_free(CARD_DDEV(card));
5075         rc = ccw_device_set_online(CARD_RDEV(card));
5076         if (rc)
5077                 goto retriable;
5078         rc = ccw_device_set_online(CARD_WDEV(card));
5079         if (rc)
5080                 goto retriable;
5081         rc = ccw_device_set_online(CARD_DDEV(card));
5082         if (rc)
5083                 goto retriable;
5084 retriable:
5085         if (rc == -ERESTARTSYS) {
5086                 QETH_DBF_TEXT(SETUP, 2, "break1");
5087                 return rc;
5088         } else if (rc) {
5089                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5090                 if (--retries < 0)
5091                         goto out;
5092                 else
5093                         goto retry;
5094         }
5095         qeth_determine_capabilities(card);
5096         qeth_init_tokens(card);
5097         qeth_init_func_level(card);
5098         rc = qeth_idx_activate_channel(card, &card->read, qeth_idx_read_cb);
5099         if (rc == -ERESTARTSYS) {
5100                 QETH_DBF_TEXT(SETUP, 2, "break2");
5101                 return rc;
5102         } else if (rc) {
5103                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5104                 if (--retries < 0)
5105                         goto out;
5106                 else
5107                         goto retry;
5108         }
5109         rc = qeth_idx_activate_channel(card, &card->write, qeth_idx_write_cb);
5110         if (rc == -ERESTARTSYS) {
5111                 QETH_DBF_TEXT(SETUP, 2, "break3");
5112                 return rc;
5113         } else if (rc) {
5114                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5115                 if (--retries < 0)
5116                         goto out;
5117                 else
5118                         goto retry;
5119         }
5120         card->read_or_write_problem = 0;
5121         rc = qeth_mpc_initialize(card);
5122         if (rc) {
5123                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5124                 goto out;
5125         }
5126
5127         rc = qeth_send_startlan(card);
5128         if (rc) {
5129                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5130                 if (rc == IPA_RC_LAN_OFFLINE) {
5131                         dev_warn(&card->gdev->dev,
5132                                 "The LAN is offline\n");
5133                         netif_carrier_off(card->dev);
5134                 } else {
5135                         rc = -ENODEV;
5136                         goto out;
5137                 }
5138         } else {
5139                 netif_carrier_on(card->dev);
5140         }
5141
5142         card->options.ipa4.supported_funcs = 0;
5143         card->options.ipa6.supported_funcs = 0;
5144         card->options.adp.supported_funcs = 0;
5145         card->options.sbp.supported_funcs = 0;
5146         card->info.diagass_support = 0;
5147         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5148         if (rc == -ENOMEM)
5149                 goto out;
5150         if (qeth_is_supported(card, IPA_IPV6)) {
5151                 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5152                 if (rc == -ENOMEM)
5153                         goto out;
5154         }
5155         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5156                 rc = qeth_query_setadapterparms(card);
5157                 if (rc < 0) {
5158                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5159                         goto out;
5160                 }
5161         }
5162         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5163                 rc = qeth_query_setdiagass(card);
5164                 if (rc < 0) {
5165                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5166                         goto out;
5167                 }
5168         }
5169         return 0;
5170 out:
5171         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5172                 "an error on the device\n");
5173         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5174                 dev_name(&card->gdev->dev), rc);
5175         return rc;
5176 }
5177 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5178
5179 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5180                                  struct sk_buff *skb, int offset, int data_len)
5181 {
5182         struct page *page = virt_to_page(element->addr);
5183         unsigned int next_frag;
5184
5185         /* first fill the linear space */
5186         if (!skb->len) {
5187                 unsigned int linear = min(data_len, skb_tailroom(skb));
5188
5189                 skb_put_data(skb, element->addr + offset, linear);
5190                 data_len -= linear;
5191                 if (!data_len)
5192                         return;
5193                 offset += linear;
5194                 /* fall through to add page frag for remaining data */
5195         }
5196
5197         next_frag = skb_shinfo(skb)->nr_frags;
5198         get_page(page);
5199         skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5200 }
5201
5202 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5203 {
5204         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5205 }
5206
5207 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5208                 struct qeth_qdio_buffer *qethbuffer,
5209                 struct qdio_buffer_element **__element, int *__offset,
5210                 struct qeth_hdr **hdr)
5211 {
5212         struct qdio_buffer_element *element = *__element;
5213         struct qdio_buffer *buffer = qethbuffer->buffer;
5214         int offset = *__offset;
5215         struct sk_buff *skb;
5216         int skb_len = 0;
5217         void *data_ptr;
5218         int data_len;
5219         int headroom = 0;
5220         int use_rx_sg = 0;
5221
5222         /* qeth_hdr must not cross element boundaries */
5223         while (element->length < offset + sizeof(struct qeth_hdr)) {
5224                 if (qeth_is_last_sbale(element))
5225                         return NULL;
5226                 element++;
5227                 offset = 0;
5228         }
5229         *hdr = element->addr + offset;
5230
5231         offset += sizeof(struct qeth_hdr);
5232         switch ((*hdr)->hdr.l2.id) {
5233         case QETH_HEADER_TYPE_LAYER2:
5234                 skb_len = (*hdr)->hdr.l2.pkt_length;
5235                 break;
5236         case QETH_HEADER_TYPE_LAYER3:
5237                 skb_len = (*hdr)->hdr.l3.length;
5238                 headroom = ETH_HLEN;
5239                 break;
5240         case QETH_HEADER_TYPE_OSN:
5241                 skb_len = (*hdr)->hdr.osn.pdu_length;
5242                 headroom = sizeof(struct qeth_hdr);
5243                 break;
5244         default:
5245                 break;
5246         }
5247
5248         if (!skb_len)
5249                 return NULL;
5250
5251         if (((skb_len >= card->options.rx_sg_cb) &&
5252              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5253              (!atomic_read(&card->force_alloc_skb))) ||
5254             (card->options.cq == QETH_CQ_ENABLED))
5255                 use_rx_sg = 1;
5256
5257         if (use_rx_sg && qethbuffer->rx_skb) {
5258                 /* QETH_CQ_ENABLED only: */
5259                 skb = qethbuffer->rx_skb;
5260                 qethbuffer->rx_skb = NULL;
5261         } else {
5262                 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5263
5264                 skb = napi_alloc_skb(&card->napi, linear + headroom);
5265         }
5266         if (!skb)
5267                 goto no_mem;
5268         if (headroom)
5269                 skb_reserve(skb, headroom);
5270
5271         data_ptr = element->addr + offset;
5272         while (skb_len) {
5273                 data_len = min(skb_len, (int)(element->length - offset));
5274                 if (data_len) {
5275                         if (use_rx_sg)
5276                                 qeth_create_skb_frag(element, skb, offset,
5277                                                      data_len);
5278                         else
5279                                 skb_put_data(skb, data_ptr, data_len);
5280                 }
5281                 skb_len -= data_len;
5282                 if (skb_len) {
5283                         if (qeth_is_last_sbale(element)) {
5284                                 QETH_CARD_TEXT(card, 4, "unexeob");
5285                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5286                                 dev_kfree_skb_any(skb);
5287                                 card->stats.rx_errors++;
5288                                 return NULL;
5289                         }
5290                         element++;
5291                         offset = 0;
5292                         data_ptr = element->addr;
5293                 } else {
5294                         offset += data_len;
5295                 }
5296         }
5297         *__element = element;
5298         *__offset = offset;
5299         if (use_rx_sg && card->options.performance_stats) {
5300                 card->perf_stats.sg_skbs_rx++;
5301                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5302         }
5303         return skb;
5304 no_mem:
5305         if (net_ratelimit()) {
5306                 QETH_CARD_TEXT(card, 2, "noskbmem");
5307         }
5308         card->stats.rx_dropped++;
5309         return NULL;
5310 }
5311 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5312
5313 int qeth_poll(struct napi_struct *napi, int budget)
5314 {
5315         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5316         int work_done = 0;
5317         struct qeth_qdio_buffer *buffer;
5318         int done;
5319         int new_budget = budget;
5320
5321         if (card->options.performance_stats) {
5322                 card->perf_stats.inbound_cnt++;
5323                 card->perf_stats.inbound_start_time = qeth_get_micros();
5324         }
5325
5326         while (1) {
5327                 if (!card->rx.b_count) {
5328                         card->rx.qdio_err = 0;
5329                         card->rx.b_count = qdio_get_next_buffers(
5330                                 card->data.ccwdev, 0, &card->rx.b_index,
5331                                 &card->rx.qdio_err);
5332                         if (card->rx.b_count <= 0) {
5333                                 card->rx.b_count = 0;
5334                                 break;
5335                         }
5336                         card->rx.b_element =
5337                                 &card->qdio.in_q->bufs[card->rx.b_index]
5338                                 .buffer->element[0];
5339                         card->rx.e_offset = 0;
5340                 }
5341
5342                 while (card->rx.b_count) {
5343                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5344                         if (!(card->rx.qdio_err &&
5345                             qeth_check_qdio_errors(card, buffer->buffer,
5346                             card->rx.qdio_err, "qinerr")))
5347                                 work_done +=
5348                                         card->discipline->process_rx_buffer(
5349                                                 card, new_budget, &done);
5350                         else
5351                                 done = 1;
5352
5353                         if (done) {
5354                                 if (card->options.performance_stats)
5355                                         card->perf_stats.bufs_rec++;
5356                                 qeth_put_buffer_pool_entry(card,
5357                                         buffer->pool_entry);
5358                                 qeth_queue_input_buffer(card, card->rx.b_index);
5359                                 card->rx.b_count--;
5360                                 if (card->rx.b_count) {
5361                                         card->rx.b_index =
5362                                                 (card->rx.b_index + 1) %
5363                                                 QDIO_MAX_BUFFERS_PER_Q;
5364                                         card->rx.b_element =
5365                                                 &card->qdio.in_q
5366                                                 ->bufs[card->rx.b_index]
5367                                                 .buffer->element[0];
5368                                         card->rx.e_offset = 0;
5369                                 }
5370                         }
5371
5372                         if (work_done >= budget)
5373                                 goto out;
5374                         else
5375                                 new_budget = budget - work_done;
5376                 }
5377         }
5378
5379         napi_complete_done(napi, work_done);
5380         if (qdio_start_irq(card->data.ccwdev, 0))
5381                 napi_schedule(&card->napi);
5382 out:
5383         if (card->options.performance_stats)
5384                 card->perf_stats.inbound_time += qeth_get_micros() -
5385                         card->perf_stats.inbound_start_time;
5386         return work_done;
5387 }
5388 EXPORT_SYMBOL_GPL(qeth_poll);
5389
5390 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5391 {
5392         if (!cmd->hdr.return_code)
5393                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5394         return cmd->hdr.return_code;
5395 }
5396
5397 int qeth_setassparms_cb(struct qeth_card *card,
5398                         struct qeth_reply *reply, unsigned long data)
5399 {
5400         struct qeth_ipa_cmd *cmd;
5401
5402         QETH_CARD_TEXT(card, 4, "defadpcb");
5403
5404         cmd = (struct qeth_ipa_cmd *) data;
5405         if (cmd->hdr.return_code == 0) {
5406                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5407                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5408                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5409                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5410                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5411         }
5412         return 0;
5413 }
5414 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5415
5416 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5417                                                  enum qeth_ipa_funcs ipa_func,
5418                                                  __u16 cmd_code, __u16 len,
5419                                                  enum qeth_prot_versions prot)
5420 {
5421         struct qeth_cmd_buffer *iob;
5422         struct qeth_ipa_cmd *cmd;
5423
5424         QETH_CARD_TEXT(card, 4, "getasscm");
5425         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5426
5427         if (iob) {
5428                 cmd = __ipa_cmd(iob);
5429                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5430                 cmd->data.setassparms.hdr.length = 8 + len;
5431                 cmd->data.setassparms.hdr.command_code = cmd_code;
5432         }
5433
5434         return iob;
5435 }
5436 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5437
5438 int qeth_send_setassparms(struct qeth_card *card,
5439                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5440                           int (*reply_cb)(struct qeth_card *,
5441                                           struct qeth_reply *, unsigned long),
5442                           void *reply_param)
5443 {
5444         int rc;
5445         struct qeth_ipa_cmd *cmd;
5446
5447         QETH_CARD_TEXT(card, 4, "sendassp");
5448
5449         cmd = __ipa_cmd(iob);
5450         if (len <= sizeof(__u32))
5451                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5452         else   /* (len > sizeof(__u32)) */
5453                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5454
5455         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5456         return rc;
5457 }
5458 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5459
5460 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5461                                       enum qeth_ipa_funcs ipa_func,
5462                                       u16 cmd_code, long data,
5463                                       enum qeth_prot_versions prot)
5464 {
5465         int rc;
5466         int length = 0;
5467         struct qeth_cmd_buffer *iob;
5468
5469         QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5470         if (data)
5471                 length = sizeof(__u32);
5472         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5473         if (!iob)
5474                 return -ENOMEM;
5475         rc = qeth_send_setassparms(card, iob, length, data,
5476                                    qeth_setassparms_cb, NULL);
5477         return rc;
5478 }
5479 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5480
5481 static void qeth_unregister_dbf_views(void)
5482 {
5483         int x;
5484         for (x = 0; x < QETH_DBF_INFOS; x++) {
5485                 debug_unregister(qeth_dbf[x].id);
5486                 qeth_dbf[x].id = NULL;
5487         }
5488 }
5489
5490 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5491 {
5492         char dbf_txt_buf[32];
5493         va_list args;
5494
5495         if (!debug_level_enabled(id, level))
5496                 return;
5497         va_start(args, fmt);
5498         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5499         va_end(args);
5500         debug_text_event(id, level, dbf_txt_buf);
5501 }
5502 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5503
5504 static int qeth_register_dbf_views(void)
5505 {
5506         int ret;
5507         int x;
5508
5509         for (x = 0; x < QETH_DBF_INFOS; x++) {
5510                 /* register the areas */
5511                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5512                                                 qeth_dbf[x].pages,
5513                                                 qeth_dbf[x].areas,
5514                                                 qeth_dbf[x].len);
5515                 if (qeth_dbf[x].id == NULL) {
5516                         qeth_unregister_dbf_views();
5517                         return -ENOMEM;
5518                 }
5519
5520                 /* register a view */
5521                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5522                 if (ret) {
5523                         qeth_unregister_dbf_views();
5524                         return ret;
5525                 }
5526
5527                 /* set a passing level */
5528                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5529         }
5530
5531         return 0;
5532 }
5533
5534 static DEFINE_MUTEX(qeth_mod_mutex);    /* for synchronized module loading */
5535
5536 int qeth_core_load_discipline(struct qeth_card *card,
5537                 enum qeth_discipline_id discipline)
5538 {
5539         mutex_lock(&qeth_mod_mutex);
5540         switch (discipline) {
5541         case QETH_DISCIPLINE_LAYER3:
5542                 card->discipline = try_then_request_module(
5543                         symbol_get(qeth_l3_discipline), "qeth_l3");
5544                 break;
5545         case QETH_DISCIPLINE_LAYER2:
5546                 card->discipline = try_then_request_module(
5547                         symbol_get(qeth_l2_discipline), "qeth_l2");
5548                 break;
5549         default:
5550                 break;
5551         }
5552         mutex_unlock(&qeth_mod_mutex);
5553
5554         if (!card->discipline) {
5555                 dev_err(&card->gdev->dev, "There is no kernel module to "
5556                         "support discipline %d\n", discipline);
5557                 return -EINVAL;
5558         }
5559
5560         card->options.layer = discipline;
5561         return 0;
5562 }
5563
5564 void qeth_core_free_discipline(struct qeth_card *card)
5565 {
5566         if (IS_LAYER2(card))
5567                 symbol_put(qeth_l2_discipline);
5568         else
5569                 symbol_put(qeth_l3_discipline);
5570         card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
5571         card->discipline = NULL;
5572 }
5573
5574 const struct device_type qeth_generic_devtype = {
5575         .name = "qeth_generic",
5576         .groups = qeth_generic_attr_groups,
5577 };
5578 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5579
5580 static const struct device_type qeth_osn_devtype = {
5581         .name = "qeth_osn",
5582         .groups = qeth_osn_attr_groups,
5583 };
5584
5585 #define DBF_NAME_LEN    20
5586
5587 struct qeth_dbf_entry {
5588         char dbf_name[DBF_NAME_LEN];
5589         debug_info_t *dbf_info;
5590         struct list_head dbf_list;
5591 };
5592
5593 static LIST_HEAD(qeth_dbf_list);
5594 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5595
5596 static debug_info_t *qeth_get_dbf_entry(char *name)
5597 {
5598         struct qeth_dbf_entry *entry;
5599         debug_info_t *rc = NULL;
5600
5601         mutex_lock(&qeth_dbf_list_mutex);
5602         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5603                 if (strcmp(entry->dbf_name, name) == 0) {
5604                         rc = entry->dbf_info;
5605                         break;
5606                 }
5607         }
5608         mutex_unlock(&qeth_dbf_list_mutex);
5609         return rc;
5610 }
5611
5612 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5613 {
5614         struct qeth_dbf_entry *new_entry;
5615
5616         card->debug = debug_register(name, 2, 1, 8);
5617         if (!card->debug) {
5618                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5619                 goto err;
5620         }
5621         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5622                 goto err_dbg;
5623         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5624         if (!new_entry)
5625                 goto err_dbg;
5626         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5627         new_entry->dbf_info = card->debug;
5628         mutex_lock(&qeth_dbf_list_mutex);
5629         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5630         mutex_unlock(&qeth_dbf_list_mutex);
5631
5632         return 0;
5633
5634 err_dbg:
5635         debug_unregister(card->debug);
5636 err:
5637         return -ENOMEM;
5638 }
5639
5640 static void qeth_clear_dbf_list(void)
5641 {
5642         struct qeth_dbf_entry *entry, *tmp;
5643
5644         mutex_lock(&qeth_dbf_list_mutex);
5645         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5646                 list_del(&entry->dbf_list);
5647                 debug_unregister(entry->dbf_info);
5648                 kfree(entry);
5649         }
5650         mutex_unlock(&qeth_dbf_list_mutex);
5651 }
5652
5653 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5654 {
5655         struct net_device *dev;
5656
5657         switch (card->info.type) {
5658         case QETH_CARD_TYPE_IQD:
5659                 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup);
5660                 break;
5661         case QETH_CARD_TYPE_OSN:
5662                 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5663                 break;
5664         default:
5665                 dev = alloc_etherdev(0);
5666         }
5667
5668         if (!dev)
5669                 return NULL;
5670
5671         dev->ml_priv = card;
5672         dev->watchdog_timeo = QETH_TX_TIMEOUT;
5673         dev->min_mtu = IS_OSN(card) ? 64 : 576;
5674          /* initialized when device first goes online: */
5675         dev->max_mtu = 0;
5676         dev->mtu = 0;
5677         SET_NETDEV_DEV(dev, &card->gdev->dev);
5678         netif_carrier_off(dev);
5679
5680         if (!IS_OSN(card)) {
5681                 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5682                 dev->hw_features |= NETIF_F_SG;
5683                 dev->vlan_features |= NETIF_F_SG;
5684                 if (IS_IQD(card))
5685                         dev->features |= NETIF_F_SG;
5686         }
5687
5688         return dev;
5689 }
5690
5691 struct net_device *qeth_clone_netdev(struct net_device *orig)
5692 {
5693         struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5694
5695         if (!clone)
5696                 return NULL;
5697
5698         clone->dev_port = orig->dev_port;
5699         return clone;
5700 }
5701
5702 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5703 {
5704         struct qeth_card *card;
5705         struct device *dev;
5706         int rc;
5707         enum qeth_discipline_id enforced_disc;
5708         char dbf_name[DBF_NAME_LEN];
5709
5710         QETH_DBF_TEXT(SETUP, 2, "probedev");
5711
5712         dev = &gdev->dev;
5713         if (!get_device(dev))
5714                 return -ENODEV;
5715
5716         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5717
5718         card = qeth_alloc_card(gdev);
5719         if (!card) {
5720                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5721                 rc = -ENOMEM;
5722                 goto err_dev;
5723         }
5724
5725         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5726                 dev_name(&gdev->dev));
5727         card->debug = qeth_get_dbf_entry(dbf_name);
5728         if (!card->debug) {
5729                 rc = qeth_add_dbf_entry(card, dbf_name);
5730                 if (rc)
5731                         goto err_card;
5732         }
5733
5734         qeth_setup_card(card);
5735         qeth_update_from_chp_desc(card);
5736
5737         card->dev = qeth_alloc_netdev(card);
5738         if (!card->dev) {
5739                 rc = -ENOMEM;
5740                 goto err_card;
5741         }
5742
5743         qeth_determine_capabilities(card);
5744         enforced_disc = qeth_enforce_discipline(card);
5745         switch (enforced_disc) {
5746         case QETH_DISCIPLINE_UNDETERMINED:
5747                 gdev->dev.type = &qeth_generic_devtype;
5748                 break;
5749         default:
5750                 card->info.layer_enforced = true;
5751                 rc = qeth_core_load_discipline(card, enforced_disc);
5752                 if (rc)
5753                         goto err_load;
5754
5755                 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5756                                         ? card->discipline->devtype
5757                                         : &qeth_osn_devtype;
5758                 rc = card->discipline->setup(card->gdev);
5759                 if (rc)
5760                         goto err_disc;
5761                 break;
5762         }
5763
5764         write_lock_irq(&qeth_core_card_list.rwlock);
5765         list_add_tail(&card->list, &qeth_core_card_list.list);
5766         write_unlock_irq(&qeth_core_card_list.rwlock);
5767         return 0;
5768
5769 err_disc:
5770         qeth_core_free_discipline(card);
5771 err_load:
5772         free_netdev(card->dev);
5773 err_card:
5774         qeth_core_free_card(card);
5775 err_dev:
5776         put_device(dev);
5777         return rc;
5778 }
5779
5780 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5781 {
5782         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5783
5784         QETH_DBF_TEXT(SETUP, 2, "removedv");
5785
5786         if (card->discipline) {
5787                 card->discipline->remove(gdev);
5788                 qeth_core_free_discipline(card);
5789         }
5790
5791         write_lock_irq(&qeth_core_card_list.rwlock);
5792         list_del(&card->list);
5793         write_unlock_irq(&qeth_core_card_list.rwlock);
5794         free_netdev(card->dev);
5795         qeth_core_free_card(card);
5796         put_device(&gdev->dev);
5797 }
5798
5799 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5800 {
5801         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5802         int rc = 0;
5803         enum qeth_discipline_id def_discipline;
5804
5805         if (!card->discipline) {
5806                 if (card->info.type == QETH_CARD_TYPE_IQD)
5807                         def_discipline = QETH_DISCIPLINE_LAYER3;
5808                 else
5809                         def_discipline = QETH_DISCIPLINE_LAYER2;
5810                 rc = qeth_core_load_discipline(card, def_discipline);
5811                 if (rc)
5812                         goto err;
5813                 rc = card->discipline->setup(card->gdev);
5814                 if (rc) {
5815                         qeth_core_free_discipline(card);
5816                         goto err;
5817                 }
5818         }
5819         rc = card->discipline->set_online(gdev);
5820 err:
5821         return rc;
5822 }
5823
5824 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5825 {
5826         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5827         return card->discipline->set_offline(gdev);
5828 }
5829
5830 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5831 {
5832         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5833         qeth_set_allowed_threads(card, 0, 1);
5834         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5835                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5836         qeth_qdio_clear_card(card, 0);
5837         qeth_clear_qdio_buffers(card);
5838         qdio_free(CARD_DDEV(card));
5839 }
5840
5841 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5842 {
5843         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5844         if (card->discipline && card->discipline->freeze)
5845                 return card->discipline->freeze(gdev);
5846         return 0;
5847 }
5848
5849 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5850 {
5851         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5852         if (card->discipline && card->discipline->thaw)
5853                 return card->discipline->thaw(gdev);
5854         return 0;
5855 }
5856
5857 static int qeth_core_restore(struct ccwgroup_device *gdev)
5858 {
5859         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5860         if (card->discipline && card->discipline->restore)
5861                 return card->discipline->restore(gdev);
5862         return 0;
5863 }
5864
5865 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5866                            size_t count)
5867 {
5868         int err;
5869
5870         err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5871                                   buf);
5872
5873         return err ? err : count;
5874 }
5875 static DRIVER_ATTR_WO(group);
5876
5877 static struct attribute *qeth_drv_attrs[] = {
5878         &driver_attr_group.attr,
5879         NULL,
5880 };
5881 static struct attribute_group qeth_drv_attr_group = {
5882         .attrs = qeth_drv_attrs,
5883 };
5884 static const struct attribute_group *qeth_drv_attr_groups[] = {
5885         &qeth_drv_attr_group,
5886         NULL,
5887 };
5888
5889 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5890         .driver = {
5891                 .groups = qeth_drv_attr_groups,
5892                 .owner = THIS_MODULE,
5893                 .name = "qeth",
5894         },
5895         .ccw_driver = &qeth_ccw_driver,
5896         .setup = qeth_core_probe_device,
5897         .remove = qeth_core_remove_device,
5898         .set_online = qeth_core_set_online,
5899         .set_offline = qeth_core_set_offline,
5900         .shutdown = qeth_core_shutdown,
5901         .prepare = NULL,
5902         .complete = NULL,
5903         .freeze = qeth_core_freeze,
5904         .thaw = qeth_core_thaw,
5905         .restore = qeth_core_restore,
5906 };
5907
5908 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5909 {
5910         struct qeth_card *card = dev->ml_priv;
5911         struct mii_ioctl_data *mii_data;
5912         int rc = 0;
5913
5914         if (!card)
5915                 return -ENODEV;
5916
5917         if (!qeth_card_hw_is_reachable(card))
5918                 return -ENODEV;
5919
5920         if (card->info.type == QETH_CARD_TYPE_OSN)
5921                 return -EPERM;
5922
5923         switch (cmd) {
5924         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5925                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5926                 break;
5927         case SIOC_QETH_GET_CARD_TYPE:
5928                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5929                      card->info.type == QETH_CARD_TYPE_OSM ||
5930                      card->info.type == QETH_CARD_TYPE_OSX) &&
5931                     !card->info.guestlan)
5932                         return 1;
5933                 else
5934                         return 0;
5935         case SIOCGMIIPHY:
5936                 mii_data = if_mii(rq);
5937                 mii_data->phy_id = 0;
5938                 break;
5939         case SIOCGMIIREG:
5940                 mii_data = if_mii(rq);
5941                 if (mii_data->phy_id != 0)
5942                         rc = -EINVAL;
5943                 else
5944                         mii_data->val_out = qeth_mdio_read(dev,
5945                                 mii_data->phy_id, mii_data->reg_num);
5946                 break;
5947         case SIOC_QETH_QUERY_OAT:
5948                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5949                 break;
5950         default:
5951                 if (card->discipline->do_ioctl)
5952                         rc = card->discipline->do_ioctl(dev, rq, cmd);
5953                 else
5954                         rc = -EOPNOTSUPP;
5955         }
5956         if (rc)
5957                 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5958         return rc;
5959 }
5960 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5961
5962 static struct {
5963         const char str[ETH_GSTRING_LEN];
5964 } qeth_ethtool_stats_keys[] = {
5965 /*  0 */{"rx skbs"},
5966         {"rx buffers"},
5967         {"tx skbs"},
5968         {"tx buffers"},
5969         {"tx skbs no packing"},
5970         {"tx buffers no packing"},
5971         {"tx skbs packing"},
5972         {"tx buffers packing"},
5973         {"tx sg skbs"},
5974         {"tx buffer elements"},
5975 /* 10 */{"rx sg skbs"},
5976         {"rx sg frags"},
5977         {"rx sg page allocs"},
5978         {"tx large kbytes"},
5979         {"tx large count"},
5980         {"tx pk state ch n->p"},
5981         {"tx pk state ch p->n"},
5982         {"tx pk watermark low"},
5983         {"tx pk watermark high"},
5984         {"queue 0 buffer usage"},
5985 /* 20 */{"queue 1 buffer usage"},
5986         {"queue 2 buffer usage"},
5987         {"queue 3 buffer usage"},
5988         {"rx poll time"},
5989         {"rx poll count"},
5990         {"rx do_QDIO time"},
5991         {"rx do_QDIO count"},
5992         {"tx handler time"},
5993         {"tx handler count"},
5994         {"tx time"},
5995 /* 30 */{"tx count"},
5996         {"tx do_QDIO time"},
5997         {"tx do_QDIO count"},
5998         {"tx csum"},
5999         {"tx lin"},
6000         {"tx linfail"},
6001         {"cq handler count"},
6002         {"cq handler time"},
6003         {"rx csum"}
6004 };
6005
6006 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6007 {
6008         switch (stringset) {
6009         case ETH_SS_STATS:
6010                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6011         default:
6012                 return -EINVAL;
6013         }
6014 }
6015 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6016
6017 void qeth_core_get_ethtool_stats(struct net_device *dev,
6018                 struct ethtool_stats *stats, u64 *data)
6019 {
6020         struct qeth_card *card = dev->ml_priv;
6021         data[0] = card->stats.rx_packets -
6022                                 card->perf_stats.initial_rx_packets;
6023         data[1] = card->perf_stats.bufs_rec;
6024         data[2] = card->stats.tx_packets -
6025                                 card->perf_stats.initial_tx_packets;
6026         data[3] = card->perf_stats.bufs_sent;
6027         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6028                         - card->perf_stats.skbs_sent_pack;
6029         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6030         data[6] = card->perf_stats.skbs_sent_pack;
6031         data[7] = card->perf_stats.bufs_sent_pack;
6032         data[8] = card->perf_stats.sg_skbs_sent;
6033         data[9] = card->perf_stats.buf_elements_sent;
6034         data[10] = card->perf_stats.sg_skbs_rx;
6035         data[11] = card->perf_stats.sg_frags_rx;
6036         data[12] = card->perf_stats.sg_alloc_page_rx;
6037         data[13] = (card->perf_stats.large_send_bytes >> 10);
6038         data[14] = card->perf_stats.large_send_cnt;
6039         data[15] = card->perf_stats.sc_dp_p;
6040         data[16] = card->perf_stats.sc_p_dp;
6041         data[17] = QETH_LOW_WATERMARK_PACK;
6042         data[18] = QETH_HIGH_WATERMARK_PACK;
6043         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6044         data[20] = (card->qdio.no_out_queues > 1) ?
6045                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6046         data[21] = (card->qdio.no_out_queues > 2) ?
6047                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6048         data[22] = (card->qdio.no_out_queues > 3) ?
6049                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6050         data[23] = card->perf_stats.inbound_time;
6051         data[24] = card->perf_stats.inbound_cnt;
6052         data[25] = card->perf_stats.inbound_do_qdio_time;
6053         data[26] = card->perf_stats.inbound_do_qdio_cnt;
6054         data[27] = card->perf_stats.outbound_handler_time;
6055         data[28] = card->perf_stats.outbound_handler_cnt;
6056         data[29] = card->perf_stats.outbound_time;
6057         data[30] = card->perf_stats.outbound_cnt;
6058         data[31] = card->perf_stats.outbound_do_qdio_time;
6059         data[32] = card->perf_stats.outbound_do_qdio_cnt;
6060         data[33] = card->perf_stats.tx_csum;
6061         data[34] = card->perf_stats.tx_lin;
6062         data[35] = card->perf_stats.tx_linfail;
6063         data[36] = card->perf_stats.cq_cnt;
6064         data[37] = card->perf_stats.cq_time;
6065         data[38] = card->perf_stats.rx_csum;
6066 }
6067 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6068
6069 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6070 {
6071         switch (stringset) {
6072         case ETH_SS_STATS:
6073                 memcpy(data, &qeth_ethtool_stats_keys,
6074                         sizeof(qeth_ethtool_stats_keys));
6075                 break;
6076         default:
6077                 WARN_ON(1);
6078                 break;
6079         }
6080 }
6081 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6082
6083 void qeth_core_get_drvinfo(struct net_device *dev,
6084                 struct ethtool_drvinfo *info)
6085 {
6086         struct qeth_card *card = dev->ml_priv;
6087
6088         strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
6089                 sizeof(info->driver));
6090         strlcpy(info->version, "1.0", sizeof(info->version));
6091         strlcpy(info->fw_version, card->info.mcl_level,
6092                 sizeof(info->fw_version));
6093         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6094                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6095 }
6096 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6097
6098 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6099 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
6100 /* Always advertise and support all speeds up to specified, and only one     */
6101 /* specified port type.                                                      */
6102 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6103                                 int maxspeed, int porttype)
6104 {
6105         ethtool_link_ksettings_zero_link_mode(cmd, supported);
6106         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6107         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6108
6109         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6110         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6111
6112         switch (porttype) {
6113         case PORT_TP:
6114                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6115                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6116                 break;
6117         case PORT_FIBRE:
6118                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6119                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6120                 break;
6121         default:
6122                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6123                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6124                 WARN_ON_ONCE(1);
6125         }
6126
6127         /* fallthrough from high to low, to select all legal speeds: */
6128         switch (maxspeed) {
6129         case SPEED_10000:
6130                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6131                                                      10000baseT_Full);
6132                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6133                                                      10000baseT_Full);
6134         case SPEED_1000:
6135                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6136                                                      1000baseT_Full);
6137                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6138                                                      1000baseT_Full);
6139                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6140                                                      1000baseT_Half);
6141                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6142                                                      1000baseT_Half);
6143         case SPEED_100:
6144                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6145                                                      100baseT_Full);
6146                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6147                                                      100baseT_Full);
6148                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6149                                                      100baseT_Half);
6150                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6151                                                      100baseT_Half);
6152         case SPEED_10:
6153                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6154                                                      10baseT_Full);
6155                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6156                                                      10baseT_Full);
6157                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6158                                                      10baseT_Half);
6159                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6160                                                      10baseT_Half);
6161                 /* end fallthrough */
6162                 break;
6163         default:
6164                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6165                                                      10baseT_Full);
6166                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6167                                                      10baseT_Full);
6168                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6169                                                      10baseT_Half);
6170                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6171                                                      10baseT_Half);
6172                 WARN_ON_ONCE(1);
6173         }
6174 }
6175
6176 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6177                 struct ethtool_link_ksettings *cmd)
6178 {
6179         struct qeth_card *card = netdev->ml_priv;
6180         enum qeth_link_types link_type;
6181         struct carrier_info carrier_info;
6182         int rc;
6183
6184         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6185                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6186         else
6187                 link_type = card->info.link_type;
6188
6189         cmd->base.duplex = DUPLEX_FULL;
6190         cmd->base.autoneg = AUTONEG_ENABLE;
6191         cmd->base.phy_address = 0;
6192         cmd->base.mdio_support = 0;
6193         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6194         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6195
6196         switch (link_type) {
6197         case QETH_LINK_TYPE_FAST_ETH:
6198         case QETH_LINK_TYPE_LANE_ETH100:
6199                 cmd->base.speed = SPEED_100;
6200                 cmd->base.port = PORT_TP;
6201                 break;
6202         case QETH_LINK_TYPE_GBIT_ETH:
6203         case QETH_LINK_TYPE_LANE_ETH1000:
6204                 cmd->base.speed = SPEED_1000;
6205                 cmd->base.port = PORT_FIBRE;
6206                 break;
6207         case QETH_LINK_TYPE_10GBIT_ETH:
6208                 cmd->base.speed = SPEED_10000;
6209                 cmd->base.port = PORT_FIBRE;
6210                 break;
6211         default:
6212                 cmd->base.speed = SPEED_10;
6213                 cmd->base.port = PORT_TP;
6214         }
6215         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6216
6217         /* Check if we can obtain more accurate information.     */
6218         /* If QUERY_CARD_INFO command is not supported or fails, */
6219         /* just return the heuristics that was filled above.     */
6220         if (!qeth_card_hw_is_reachable(card))
6221                 return -ENODEV;
6222         rc = qeth_query_card_info(card, &carrier_info);
6223         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6224                 return 0;
6225         if (rc) /* report error from the hardware operation */
6226                 return rc;
6227         /* on success, fill in the information got from the hardware */
6228
6229         netdev_dbg(netdev,
6230         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6231                         carrier_info.card_type,
6232                         carrier_info.port_mode,
6233                         carrier_info.port_speed);
6234
6235         /* Update attributes for which we've obtained more authoritative */
6236         /* information, leave the rest the way they where filled above.  */
6237         switch (carrier_info.card_type) {
6238         case CARD_INFO_TYPE_1G_COPPER_A:
6239         case CARD_INFO_TYPE_1G_COPPER_B:
6240                 cmd->base.port = PORT_TP;
6241                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6242                 break;
6243         case CARD_INFO_TYPE_1G_FIBRE_A:
6244         case CARD_INFO_TYPE_1G_FIBRE_B:
6245                 cmd->base.port = PORT_FIBRE;
6246                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6247                 break;
6248         case CARD_INFO_TYPE_10G_FIBRE_A:
6249         case CARD_INFO_TYPE_10G_FIBRE_B:
6250                 cmd->base.port = PORT_FIBRE;
6251                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6252                 break;
6253         }
6254
6255         switch (carrier_info.port_mode) {
6256         case CARD_INFO_PORTM_FULLDUPLEX:
6257                 cmd->base.duplex = DUPLEX_FULL;
6258                 break;
6259         case CARD_INFO_PORTM_HALFDUPLEX:
6260                 cmd->base.duplex = DUPLEX_HALF;
6261                 break;
6262         }
6263
6264         switch (carrier_info.port_speed) {
6265         case CARD_INFO_PORTS_10M:
6266                 cmd->base.speed = SPEED_10;
6267                 break;
6268         case CARD_INFO_PORTS_100M:
6269                 cmd->base.speed = SPEED_100;
6270                 break;
6271         case CARD_INFO_PORTS_1G:
6272                 cmd->base.speed = SPEED_1000;
6273                 break;
6274         case CARD_INFO_PORTS_10G:
6275                 cmd->base.speed = SPEED_10000;
6276                 break;
6277         }
6278
6279         return 0;
6280 }
6281 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6282
6283 /* Callback to handle checksum offload command reply from OSA card.
6284  * Verify that required features have been enabled on the card.
6285  * Return error in hdr->return_code as this value is checked by caller.
6286  *
6287  * Always returns zero to indicate no further messages from the OSA card.
6288  */
6289 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6290                                         struct qeth_reply *reply,
6291                                         unsigned long data)
6292 {
6293         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6294         struct qeth_checksum_cmd *chksum_cb =
6295                                 (struct qeth_checksum_cmd *)reply->param;
6296
6297         QETH_CARD_TEXT(card, 4, "chkdoccb");
6298         if (qeth_setassparms_inspect_rc(cmd))
6299                 return 0;
6300
6301         memset(chksum_cb, 0, sizeof(*chksum_cb));
6302         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6303                 chksum_cb->supported =
6304                                 cmd->data.setassparms.data.chksum.supported;
6305                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6306         }
6307         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6308                 chksum_cb->supported =
6309                                 cmd->data.setassparms.data.chksum.supported;
6310                 chksum_cb->enabled =
6311                                 cmd->data.setassparms.data.chksum.enabled;
6312                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6313                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6314         }
6315         return 0;
6316 }
6317
6318 /* Send command to OSA card and check results. */
6319 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6320                                      enum qeth_ipa_funcs ipa_func,
6321                                      __u16 cmd_code, long data,
6322                                      struct qeth_checksum_cmd *chksum_cb,
6323                                      enum qeth_prot_versions prot)
6324 {
6325         struct qeth_cmd_buffer *iob;
6326         int rc = -ENOMEM;
6327
6328         QETH_CARD_TEXT(card, 4, "chkdocmd");
6329         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6330                                        sizeof(__u32), prot);
6331         if (iob)
6332                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6333                                            qeth_ipa_checksum_run_cmd_cb,
6334                                            chksum_cb);
6335         return rc;
6336 }
6337
6338 static int qeth_send_checksum_on(struct qeth_card *card, int cstype,
6339                                  enum qeth_prot_versions prot)
6340 {
6341         u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6342         struct qeth_checksum_cmd chksum_cb;
6343         int rc;
6344
6345         if (prot == QETH_PROT_IPV4)
6346                 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6347         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6348                                        &chksum_cb, prot);
6349         if (!rc) {
6350                 if ((required_features & chksum_cb.supported) !=
6351                     required_features)
6352                         rc = -EIO;
6353                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6354                          cstype == IPA_INBOUND_CHECKSUM)
6355                         dev_warn(&card->gdev->dev,
6356                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6357                                  QETH_CARD_IFNAME(card));
6358         }
6359         if (rc) {
6360                 qeth_send_simple_setassparms_prot(card, cstype,
6361                                                   IPA_CMD_ASS_STOP, 0, prot);
6362                 dev_warn(&card->gdev->dev,
6363                          "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n",
6364                          prot, QETH_CARD_IFNAME(card));
6365                 return rc;
6366         }
6367         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6368                                        chksum_cb.supported, &chksum_cb,
6369                                        prot);
6370         if (!rc) {
6371                 if ((required_features & chksum_cb.enabled) !=
6372                     required_features)
6373                         rc = -EIO;
6374         }
6375         if (rc) {
6376                 qeth_send_simple_setassparms_prot(card, cstype,
6377                                                   IPA_CMD_ASS_STOP, 0, prot);
6378                 dev_warn(&card->gdev->dev,
6379                          "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n",
6380                          prot, QETH_CARD_IFNAME(card));
6381                 return rc;
6382         }
6383
6384         dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6385                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6386         return 0;
6387 }
6388
6389 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6390                              enum qeth_prot_versions prot)
6391 {
6392         int rc = (on) ? qeth_send_checksum_on(card, cstype, prot)
6393                       : qeth_send_simple_setassparms_prot(card, cstype,
6394                                                           IPA_CMD_ASS_STOP, 0,
6395                                                           prot);
6396         return rc ? -EIO : 0;
6397 }
6398
6399 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6400 {
6401         int rc;
6402
6403         QETH_CARD_TEXT(card, 3, "sttso");
6404
6405         if (on) {
6406                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6407                                                   IPA_CMD_ASS_START, 0);
6408                 if (rc) {
6409                         dev_warn(&card->gdev->dev,
6410                                  "Starting outbound TCP segmentation offload for %s failed\n",
6411                                  QETH_CARD_IFNAME(card));
6412                         return -EIO;
6413                 }
6414                 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6415         } else {
6416                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6417                                                   IPA_CMD_ASS_STOP, 0);
6418         }
6419         return rc;
6420 }
6421
6422 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6423 {
6424         int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6425         int rc_ipv6;
6426
6427         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6428                 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6429                                             QETH_PROT_IPV4);
6430         if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6431                 /* no/one Offload Assist available, so the rc is trivial */
6432                 return rc_ipv4;
6433
6434         rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6435                                     QETH_PROT_IPV6);
6436
6437         if (on)
6438                 /* enable: success if any Assist is active */
6439                 return (rc_ipv6) ? rc_ipv4 : 0;
6440
6441         /* disable: failure if any Assist is still active */
6442         return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6443 }
6444
6445 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \
6446                           NETIF_F_IPV6_CSUM)
6447 /**
6448  * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6449  * @dev:        a net_device
6450  */
6451 void qeth_enable_hw_features(struct net_device *dev)
6452 {
6453         struct qeth_card *card = dev->ml_priv;
6454         netdev_features_t features;
6455
6456         rtnl_lock();
6457         features = dev->features;
6458         /* force-off any feature that needs an IPA sequence.
6459          * netdev_update_features() will restart them.
6460          */
6461         dev->features &= ~QETH_HW_FEATURES;
6462         netdev_update_features(dev);
6463         if (features != dev->features)
6464                 dev_warn(&card->gdev->dev,
6465                          "Device recovery failed to restore all offload features\n");
6466         rtnl_unlock();
6467 }
6468 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6469
6470 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6471 {
6472         struct qeth_card *card = dev->ml_priv;
6473         netdev_features_t changed = dev->features ^ features;
6474         int rc = 0;
6475
6476         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6477         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6478
6479         if ((changed & NETIF_F_IP_CSUM)) {
6480                 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6481                                        IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6482                 if (rc)
6483                         changed ^= NETIF_F_IP_CSUM;
6484         }
6485         if (changed & NETIF_F_IPV6_CSUM) {
6486                 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6487                                        IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6488                 if (rc)
6489                         changed ^= NETIF_F_IPV6_CSUM;
6490         }
6491         if (changed & NETIF_F_RXCSUM) {
6492                 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6493                 if (rc)
6494                         changed ^= NETIF_F_RXCSUM;
6495         }
6496         if ((changed & NETIF_F_TSO)) {
6497                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6498                 if (rc)
6499                         changed ^= NETIF_F_TSO;
6500         }
6501
6502         /* everything changed successfully? */
6503         if ((dev->features ^ features) == changed)
6504                 return 0;
6505         /* something went wrong. save changed features and return error */
6506         dev->features ^= changed;
6507         return -EIO;
6508 }
6509 EXPORT_SYMBOL_GPL(qeth_set_features);
6510
6511 netdev_features_t qeth_fix_features(struct net_device *dev,
6512                                     netdev_features_t features)
6513 {
6514         struct qeth_card *card = dev->ml_priv;
6515
6516         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6517         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6518                 features &= ~NETIF_F_IP_CSUM;
6519         if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6520                 features &= ~NETIF_F_IPV6_CSUM;
6521         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6522             !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6523                 features &= ~NETIF_F_RXCSUM;
6524         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6525                 features &= ~NETIF_F_TSO;
6526         /* if the card isn't up, remove features that require hw changes */
6527         if (card->state == CARD_STATE_DOWN ||
6528             card->state == CARD_STATE_RECOVER)
6529                 features &= ~QETH_HW_FEATURES;
6530         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6531         return features;
6532 }
6533 EXPORT_SYMBOL_GPL(qeth_fix_features);
6534
6535 netdev_features_t qeth_features_check(struct sk_buff *skb,
6536                                       struct net_device *dev,
6537                                       netdev_features_t features)
6538 {
6539         /* GSO segmentation builds skbs with
6540          *      a (small) linear part for the headers, and
6541          *      page frags for the data.
6542          * Compared to a linear skb, the header-only part consumes an
6543          * additional buffer element. This reduces buffer utilization, and
6544          * hurts throughput. So compress small segments into one element.
6545          */
6546         if (netif_needs_gso(skb, features)) {
6547                 /* match skb_segment(): */
6548                 unsigned int doffset = skb->data - skb_mac_header(skb);
6549                 unsigned int hsize = skb_shinfo(skb)->gso_size;
6550                 unsigned int hroom = skb_headroom(skb);
6551
6552                 /* linearize only if resulting skb allocations are order-0: */
6553                 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6554                         features &= ~NETIF_F_SG;
6555         }
6556
6557         return vlan_features_check(skb, features);
6558 }
6559 EXPORT_SYMBOL_GPL(qeth_features_check);
6560
6561 static int __init qeth_core_init(void)
6562 {
6563         int rc;
6564
6565         pr_info("loading core functions\n");
6566         INIT_LIST_HEAD(&qeth_core_card_list.list);
6567         rwlock_init(&qeth_core_card_list.rwlock);
6568
6569         qeth_wq = create_singlethread_workqueue("qeth_wq");
6570         if (!qeth_wq) {
6571                 rc = -ENOMEM;
6572                 goto out_err;
6573         }
6574
6575         rc = qeth_register_dbf_views();
6576         if (rc)
6577                 goto dbf_err;
6578         qeth_core_root_dev = root_device_register("qeth");
6579         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6580         if (rc)
6581                 goto register_err;
6582         qeth_core_header_cache =
6583                 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6584                                   roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6585                                   0, NULL);
6586         if (!qeth_core_header_cache) {
6587                 rc = -ENOMEM;
6588                 goto slab_err;
6589         }
6590         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6591                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6592         if (!qeth_qdio_outbuf_cache) {
6593                 rc = -ENOMEM;
6594                 goto cqslab_err;
6595         }
6596         rc = ccw_driver_register(&qeth_ccw_driver);
6597         if (rc)
6598                 goto ccw_err;
6599         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6600         if (rc)
6601                 goto ccwgroup_err;
6602
6603         return 0;
6604
6605 ccwgroup_err:
6606         ccw_driver_unregister(&qeth_ccw_driver);
6607 ccw_err:
6608         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6609 cqslab_err:
6610         kmem_cache_destroy(qeth_core_header_cache);
6611 slab_err:
6612         root_device_unregister(qeth_core_root_dev);
6613 register_err:
6614         qeth_unregister_dbf_views();
6615 dbf_err:
6616         destroy_workqueue(qeth_wq);
6617 out_err:
6618         pr_err("Initializing the qeth device driver failed\n");
6619         return rc;
6620 }
6621
6622 static void __exit qeth_core_exit(void)
6623 {
6624         qeth_clear_dbf_list();
6625         destroy_workqueue(qeth_wq);
6626         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6627         ccw_driver_unregister(&qeth_ccw_driver);
6628         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6629         kmem_cache_destroy(qeth_core_header_cache);
6630         root_device_unregister(qeth_core_root_dev);
6631         qeth_unregister_dbf_views();
6632         pr_info("core functions removed\n");
6633 }
6634
6635 module_init(qeth_core_init);
6636 module_exit(qeth_core_exit);
6637 MODULE_AUTHOR("Frank Blaschka <[email protected]>");
6638 MODULE_DESCRIPTION("qeth core functions");
6639 MODULE_LICENSE("GPL");