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 <utz.bacher@de.ibm.com>,
   5  *               Frank Pavlic <fpavlic@de.ibm.com>,
   6  *               Thomas Spatzier <tspat@de.ibm.com>,
   7  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   8  */
   9
  10 #define KMSG_COMPONENT "qeth"
  11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/ip.h>
  19 #include <linux/tcp.h>
  20 #include <linux/mii.h>
  21 #include <linux/kthread.h>
  22 #include <linux/slab.h>
  23 #include <linux/if_vlan.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/netdev_features.h>
  26 #include <linux/skbuff.h>
  27
  28 #include <net/iucv/af_iucv.h>
  29 #include <net/dsfield.h>
  30
  31 #include <asm/ebcdic.h>
  32 #include <asm/chpid.h>
  33 #include <asm/io.h>
  34 #include <asm/sysinfo.h>
  35 #include <asm/compat.h>
  36 #include <asm/diag.h>
  37 #include <asm/cio.h>
  38 #include <asm/ccwdev.h>
  39 #include <asm/cpcmd.h>
  40
  41 #include "qeth_core.h"
  42
  43 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  44         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  45         /*                   N  P  A    M  L  V                      H  */
  46         [QETH_DBF_SETUP] = {"qeth_setup",
  47                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  48         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  49                             &debug_sprintf_view, NULL},
  50         [QETH_DBF_CTRL]  = {"qeth_control",
  51                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  52 };
  53 EXPORT_SYMBOL_GPL(qeth_dbf);
  54
  55 struct qeth_card_list_struct qeth_core_card_list;
  56 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  57 struct kmem_cache *qeth_core_header_cache;
  58 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  59 static struct kmem_cache *qeth_qdio_outbuf_cache;
  60
  61 static struct device *qeth_core_root_dev;
  62 static struct lock_class_key qdio_out_skb_queue_key;
  63 static struct mutex qeth_mod_mutex;
  64
  65 static void qeth_send_control_data_cb(struct qeth_channel *,
  66                         struct qeth_cmd_buffer *);
  67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  68 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  69 static void qeth_free_buffer_pool(struct qeth_card *);
  70 static int qeth_qdio_establish(struct qeth_card *);
  71 static void qeth_free_qdio_buffers(struct qeth_card *);
  72 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  73                 struct qeth_qdio_out_buffer *buf,
  74                 enum iucv_tx_notify notification);
  75 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  76 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  77                 struct qeth_qdio_out_buffer *buf,
  78                 enum qeth_qdio_buffer_states newbufstate);
  79 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  80
  81 struct workqueue_struct *qeth_wq;
  82 EXPORT_SYMBOL_GPL(qeth_wq);
  83
  84 int qeth_card_hw_is_reachable(struct qeth_card *card)
  85 {
  86         return (card->state == CARD_STATE_SOFTSETUP) ||
  87                 (card->state == CARD_STATE_UP);
  88 }
  89 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
  90
  91 static void qeth_close_dev_handler(struct work_struct *work)
  92 {
  93         struct qeth_card *card;
  94
  95         card = container_of(work, struct qeth_card, close_dev_work);
  96         QETH_CARD_TEXT(card, 2, "cldevhdl");
  97         rtnl_lock();
  98         dev_close(card->dev);
  99         rtnl_unlock();
 100         ccwgroup_set_offline(card->gdev);
 101 }
 102
 103 void qeth_close_dev(struct qeth_card *card)
 104 {
 105         QETH_CARD_TEXT(card, 2, "cldevsubm");
 106         queue_work(qeth_wq, &card->close_dev_work);
 107 }
 108 EXPORT_SYMBOL_GPL(qeth_close_dev);
 109
 110 static const char *qeth_get_cardname(struct qeth_card *card)
 111 {
 112         if (card->info.guestlan) {
 113                 switch (card->info.type) {
 114                 case QETH_CARD_TYPE_OSD:
 115                         return " Virtual NIC QDIO";
 116                 case QETH_CARD_TYPE_IQD:
 117                         return " Virtual NIC Hiper";
 118                 case QETH_CARD_TYPE_OSM:
 119                         return " Virtual NIC QDIO - OSM";
 120                 case QETH_CARD_TYPE_OSX:
 121                         return " Virtual NIC QDIO - OSX";
 122                 default:
 123                         return " unknown";
 124                 }
 125         } else {
 126                 switch (card->info.type) {
 127                 case QETH_CARD_TYPE_OSD:
 128                         return " OSD Express";
 129                 case QETH_CARD_TYPE_IQD:
 130                         return " HiperSockets";
 131                 case QETH_CARD_TYPE_OSN:
 132                         return " OSN QDIO";
 133                 case QETH_CARD_TYPE_OSM:
 134                         return " OSM QDIO";
 135                 case QETH_CARD_TYPE_OSX:
 136                         return " OSX QDIO";
 137                 default:
 138                         return " unknown";
 139                 }
 140         }
 141         return " n/a";
 142 }
 143
 144 /* max length to be returned: 14 */
 145 const char *qeth_get_cardname_short(struct qeth_card *card)
 146 {
 147         if (card->info.guestlan) {
 148                 switch (card->info.type) {
 149                 case QETH_CARD_TYPE_OSD:
 150                         return "Virt.NIC QDIO";
 151                 case QETH_CARD_TYPE_IQD:
 152                         return "Virt.NIC Hiper";
 153                 case QETH_CARD_TYPE_OSM:
 154                         return "Virt.NIC OSM";
 155                 case QETH_CARD_TYPE_OSX:
 156                         return "Virt.NIC OSX";
 157                 default:
 158                         return "unknown";
 159                 }
 160         } else {
 161                 switch (card->info.type) {
 162                 case QETH_CARD_TYPE_OSD:
 163                         switch (card->info.link_type) {
 164                         case QETH_LINK_TYPE_FAST_ETH:
 165                                 return "OSD_100";
 166                         case QETH_LINK_TYPE_HSTR:
 167                                 return "HSTR";
 168                         case QETH_LINK_TYPE_GBIT_ETH:
 169                                 return "OSD_1000";
 170                         case QETH_LINK_TYPE_10GBIT_ETH:
 171                                 return "OSD_10GIG";
 172                         case QETH_LINK_TYPE_LANE_ETH100:
 173                                 return "OSD_FE_LANE";
 174                         case QETH_LINK_TYPE_LANE_TR:
 175                                 return "OSD_TR_LANE";
 176                         case QETH_LINK_TYPE_LANE_ETH1000:
 177                                 return "OSD_GbE_LANE";
 178                         case QETH_LINK_TYPE_LANE:
 179                                 return "OSD_ATM_LANE";
 180                         default:
 181                                 return "OSD_Express";
 182                         }
 183                 case QETH_CARD_TYPE_IQD:
 184                         return "HiperSockets";
 185                 case QETH_CARD_TYPE_OSN:
 186                         return "OSN";
 187                 case QETH_CARD_TYPE_OSM:
 188                         return "OSM_1000";
 189                 case QETH_CARD_TYPE_OSX:
 190                         return "OSX_10GIG";
 191                 default:
 192                         return "unknown";
 193                 }
 194         }
 195         return "n/a";
 196 }
 197
 198 void qeth_set_recovery_task(struct qeth_card *card)
 199 {
 200         card->recovery_task = current;
 201 }
 202 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 203
 204 void qeth_clear_recovery_task(struct qeth_card *card)
 205 {
 206         card->recovery_task = NULL;
 207 }
 208 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 209
 210 static bool qeth_is_recovery_task(const struct qeth_card *card)
 211 {
 212         return card->recovery_task == current;
 213 }
 214
 215 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 216                          int clear_start_mask)
 217 {
 218         unsigned long flags;
 219
 220         spin_lock_irqsave(&card->thread_mask_lock, flags);
 221         card->thread_allowed_mask = threads;
 222         if (clear_start_mask)
 223                 card->thread_start_mask &= threads;
 224         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 225         wake_up(&card->wait_q);
 226 }
 227 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 228
 229 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 230 {
 231         unsigned long flags;
 232         int rc = 0;
 233
 234         spin_lock_irqsave(&card->thread_mask_lock, flags);
 235         rc = (card->thread_running_mask & threads);
 236         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 237         return rc;
 238 }
 239 EXPORT_SYMBOL_GPL(qeth_threads_running);
 240
 241 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 242 {
 243         if (qeth_is_recovery_task(card))
 244                 return 0;
 245         return wait_event_interruptible(card->wait_q,
 246                         qeth_threads_running(card, threads) == 0);
 247 }
 248 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 249
 250 void qeth_clear_working_pool_list(struct qeth_card *card)
 251 {
 252         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 253
 254         QETH_CARD_TEXT(card, 5, "clwrklst");
 255         list_for_each_entry_safe(pool_entry, tmp,
 256                             &card->qdio.in_buf_pool.entry_list, list){
 257                         list_del(&pool_entry->list);
 258         }
 259 }
 260 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 261
 262 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 263 {
 264         struct qeth_buffer_pool_entry *pool_entry;
 265         void *ptr;
 266         int i, j;
 267
 268         QETH_CARD_TEXT(card, 5, "alocpool");
 269         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 270                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 271                 if (!pool_entry) {
 272                         qeth_free_buffer_pool(card);
 273                         return -ENOMEM;
 274                 }
 275                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 276                         ptr = (void *) __get_free_page(GFP_KERNEL);
 277                         if (!ptr) {
 278                                 while (j > 0)
 279                                         free_page((unsigned long)
 280                                                   pool_entry->elements[--j]);
 281                                 kfree(pool_entry);
 282                                 qeth_free_buffer_pool(card);
 283                                 return -ENOMEM;
 284                         }
 285                         pool_entry->elements[j] = ptr;
 286                 }
 287                 list_add(&pool_entry->init_list,
 288                          &card->qdio.init_pool.entry_list);
 289         }
 290         return 0;
 291 }
 292
 293 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 294 {
 295         QETH_CARD_TEXT(card, 2, "realcbp");
 296
 297         if ((card->state != CARD_STATE_DOWN) &&
 298             (card->state != CARD_STATE_RECOVER))
 299                 return -EPERM;
 300
 301         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 302         qeth_clear_working_pool_list(card);
 303         qeth_free_buffer_pool(card);
 304         card->qdio.in_buf_pool.buf_count = bufcnt;
 305         card->qdio.init_pool.buf_count = bufcnt;
 306         return qeth_alloc_buffer_pool(card);
 307 }
 308 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 309
 310 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 311 {
 312         if (!q)
 313                 return;
 314
 315         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 316         kfree(q);
 317 }
 318
 319 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 320 {
 321         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 322         int i;
 323
 324         if (!q)
 325                 return NULL;
 326
 327         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 328                 kfree(q);
 329                 return NULL;
 330         }
 331
 332         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 333                 q->bufs[i].buffer = q->qdio_bufs[i];
 334
 335         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 336         return q;
 337 }
 338
 339 static int qeth_cq_init(struct qeth_card *card)
 340 {
 341         int rc;
 342
 343         if (card->options.cq == QETH_CQ_ENABLED) {
 344                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 345                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 346                                    QDIO_MAX_BUFFERS_PER_Q);
 347                 card->qdio.c_q->next_buf_to_init = 127;
 348                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 349                              card->qdio.no_in_queues - 1, 0,
 350                              127);
 351                 if (rc) {
 352                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 353                         goto out;
 354                 }
 355         }
 356         rc = 0;
 357 out:
 358         return rc;
 359 }
 360
 361 static int qeth_alloc_cq(struct qeth_card *card)
 362 {
 363         int rc;
 364
 365         if (card->options.cq == QETH_CQ_ENABLED) {
 366                 int i;
 367                 struct qdio_outbuf_state *outbuf_states;
 368
 369                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 370                 card->qdio.c_q = qeth_alloc_qdio_queue();
 371                 if (!card->qdio.c_q) {
 372                         rc = -1;
 373                         goto kmsg_out;
 374                 }
 375                 card->qdio.no_in_queues = 2;
 376                 card->qdio.out_bufstates =
 377                         kzalloc(card->qdio.no_out_queues *
 378                                 QDIO_MAX_BUFFERS_PER_Q *
 379                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 380                 outbuf_states = card->qdio.out_bufstates;
 381                 if (outbuf_states == NULL) {
 382                         rc = -1;
 383                         goto free_cq_out;
 384                 }
 385                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 386                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 387                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 388                 }
 389         } else {
 390                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 391                 card->qdio.c_q = NULL;
 392                 card->qdio.no_in_queues = 1;
 393         }
 394         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 395         rc = 0;
 396 out:
 397         return rc;
 398 free_cq_out:
 399         qeth_free_qdio_queue(card->qdio.c_q);
 400         card->qdio.c_q = NULL;
 401 kmsg_out:
 402         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 403         goto out;
 404 }
 405
 406 static void qeth_free_cq(struct qeth_card *card)
 407 {
 408         if (card->qdio.c_q) {
 409                 --card->qdio.no_in_queues;
 410                 qeth_free_qdio_queue(card->qdio.c_q);
 411                 card->qdio.c_q = NULL;
 412         }
 413         kfree(card->qdio.out_bufstates);
 414         card->qdio.out_bufstates = NULL;
 415 }
 416
 417 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 418                                                         int delayed)
 419 {
 420         enum iucv_tx_notify n;
 421
 422         switch (sbalf15) {
 423         case 0:
 424                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 425                 break;
 426         case 4:
 427         case 16:
 428         case 17:
 429         case 18:
 430                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 431                         TX_NOTIFY_UNREACHABLE;
 432                 break;
 433         default:
 434                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 435                         TX_NOTIFY_GENERALERROR;
 436                 break;
 437         }
 438
 439         return n;
 440 }
 441
 442 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
 443                                          int forced_cleanup)
 444 {
 445         if (q->card->options.cq != QETH_CQ_ENABLED)
 446                 return;
 447
 448         if (q->bufs[bidx]->next_pending != NULL) {
 449                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 450                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 451
 452                 while (c) {
 453                         if (forced_cleanup ||
 454                             atomic_read(&c->state) ==
 455                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 456                                 struct qeth_qdio_out_buffer *f = c;
 457                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 458                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 459                                 /* release here to avoid interleaving between
 460                                    outbound tasklet and inbound tasklet
 461                                    regarding notifications and lifecycle */
 462                                 qeth_release_skbs(c);
 463
 464                                 c = f->next_pending;
 465                                 WARN_ON_ONCE(head->next_pending != f);
 466                                 head->next_pending = c;
 467                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 468                         } else {
 469                                 head = c;
 470                                 c = c->next_pending;
 471                         }
 472
 473                 }
 474         }
 475         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 476                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 477                 /* for recovery situations */
 478                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 479                 qeth_init_qdio_out_buf(q, bidx);
 480                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 481         }
 482 }
 483
 484
 485 static void qeth_qdio_handle_aob(struct qeth_card *card,
 486                                  unsigned long phys_aob_addr)
 487 {
 488         struct qaob *aob;
 489         struct qeth_qdio_out_buffer *buffer;
 490         enum iucv_tx_notify notification;
 491
 492         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 493         QETH_CARD_TEXT(card, 5, "haob");
 494         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 495         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 496         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 497
 498         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 499                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 500                 notification = TX_NOTIFY_OK;
 501         } else {
 502                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 503                                                         QETH_QDIO_BUF_PENDING);
 504                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 505                 notification = TX_NOTIFY_DELAYED_OK;
 506         }
 507
 508         if (aob->aorc != 0)  {
 509                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 510                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 511         }
 512         qeth_notify_skbs(buffer->q, buffer, notification);
 513
 514         buffer->aob = NULL;
 515         qeth_clear_output_buffer(buffer->q, buffer,
 516                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 517
 518         /* from here on: do not touch buffer anymore */
 519         qdio_release_aob(aob);
 520 }
 521
 522 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 523 {
 524         return card->options.cq == QETH_CQ_ENABLED &&
 525             card->qdio.c_q != NULL &&
 526             queue != 0 &&
 527             queue == card->qdio.no_in_queues - 1;
 528 }
 529
 530
 531 static int qeth_issue_next_read(struct qeth_card *card)
 532 {
 533         int rc;
 534         struct qeth_cmd_buffer *iob;
 535
 536         QETH_CARD_TEXT(card, 5, "issnxrd");
 537         if (card->read.state != CH_STATE_UP)
 538                 return -EIO;
 539         iob = qeth_get_buffer(&card->read);
 540         if (!iob) {
 541                 dev_warn(&card->gdev->dev, "The qeth device driver "
 542                         "failed to recover an error on the device\n");
 543                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 544                         "available\n", dev_name(&card->gdev->dev));
 545                 return -ENOMEM;
 546         }
 547         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 548         QETH_CARD_TEXT(card, 6, "noirqpnd");
 549         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 550                               (addr_t) iob, 0, 0);
 551         if (rc) {
 552                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 553                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 554                 atomic_set(&card->read.irq_pending, 0);
 555                 card->read_or_write_problem = 1;
 556                 qeth_schedule_recovery(card);
 557                 wake_up(&card->wait_q);
 558         }
 559         return rc;
 560 }
 561
 562 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 563 {
 564         struct qeth_reply *reply;
 565
 566         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 567         if (reply) {
 568                 refcount_set(&reply->refcnt, 1);
 569                 atomic_set(&reply->received, 0);
 570                 reply->card = card;
 571         }
 572         return reply;
 573 }
 574
 575 static void qeth_get_reply(struct qeth_reply *reply)
 576 {
 577         refcount_inc(&reply->refcnt);
 578 }
 579
 580 static void qeth_put_reply(struct qeth_reply *reply)
 581 {
 582         if (refcount_dec_and_test(&reply->refcnt))
 583                 kfree(reply);
 584 }
 585
 586 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 587                 struct qeth_card *card)
 588 {
 589         char *ipa_name;
 590         int com = cmd->hdr.command;
 591         ipa_name = qeth_get_ipa_cmd_name(com);
 592         if (rc)
 593                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 594                                 "x%X \"%s\"\n",
 595                                 ipa_name, com, dev_name(&card->gdev->dev),
 596                                 QETH_CARD_IFNAME(card), rc,
 597                                 qeth_get_ipa_msg(rc));
 598         else
 599                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 600                                 ipa_name, com, dev_name(&card->gdev->dev),
 601                                 QETH_CARD_IFNAME(card));
 602 }
 603
 604 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 605                 struct qeth_cmd_buffer *iob)
 606 {
 607         struct qeth_ipa_cmd *cmd = NULL;
 608
 609         QETH_CARD_TEXT(card, 5, "chkipad");
 610         if (IS_IPA(iob->data)) {
 611                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 612                 if (IS_IPA_REPLY(cmd)) {
 613                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 614                             cmd->hdr.command != IPA_CMD_DELCCID &&
 615                             cmd->hdr.command != IPA_CMD_MODCCID &&
 616                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 617                                 qeth_issue_ipa_msg(cmd,
 618                                                 cmd->hdr.return_code, card);
 619                         return cmd;
 620                 } else {
 621                         switch (cmd->hdr.command) {
 622                         case IPA_CMD_STOPLAN:
 623                                 if (cmd->hdr.return_code ==
 624                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 625                                         dev_err(&card->gdev->dev,
 626                                            "Interface %s is down because the "
 627                                            "adjacent port is no longer in "
 628                                            "reflective relay mode\n",
 629                                            QETH_CARD_IFNAME(card));
 630                                         qeth_close_dev(card);
 631                                 } else {
 632                                         dev_warn(&card->gdev->dev,
 633                                            "The link for interface %s on CHPID"
 634                                            " 0x%X failed\n",
 635                                            QETH_CARD_IFNAME(card),
 636                                            card->info.chpid);
 637                                         qeth_issue_ipa_msg(cmd,
 638                                                 cmd->hdr.return_code, card);
 639                                 }
 640                                 card->lan_online = 0;
 641                                 if (card->dev && netif_carrier_ok(card->dev))
 642                                         netif_carrier_off(card->dev);
 643                                 return NULL;
 644                         case IPA_CMD_STARTLAN:
 645                                 dev_info(&card->gdev->dev,
 646                                            "The link for %s on CHPID 0x%X has"
 647                                            " been restored\n",
 648                                            QETH_CARD_IFNAME(card),
 649                                            card->info.chpid);
 650                                 netif_carrier_on(card->dev);
 651                                 card->lan_online = 1;
 652                                 if (card->info.hwtrap)
 653                                         card->info.hwtrap = 2;
 654                                 qeth_schedule_recovery(card);
 655                                 return NULL;
 656                         case IPA_CMD_SETBRIDGEPORT_IQD:
 657                         case IPA_CMD_SETBRIDGEPORT_OSA:
 658                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 659                                 if (card->discipline->control_event_handler
 660                                                                 (card, cmd))
 661                                         return cmd;
 662                                 else
 663                                         return NULL;
 664                         case IPA_CMD_MODCCID:
 665                                 return cmd;
 666                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 667                                 QETH_CARD_TEXT(card, 3, "irla");
 668                                 break;
 669                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 670                                 QETH_CARD_TEXT(card, 3, "urla");
 671                                 break;
 672                         default:
 673                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 674                                            "but not a reply!\n");
 675                                 break;
 676                         }
 677                 }
 678         }
 679         return cmd;
 680 }
 681
 682 void qeth_clear_ipacmd_list(struct qeth_card *card)
 683 {
 684         struct qeth_reply *reply, *r;
 685         unsigned long flags;
 686
 687         QETH_CARD_TEXT(card, 4, "clipalst");
 688
 689         spin_lock_irqsave(&card->lock, flags);
 690         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 691                 qeth_get_reply(reply);
 692                 reply->rc = -EIO;
 693                 atomic_inc(&reply->received);
 694                 list_del_init(&reply->list);
 695                 wake_up(&reply->wait_q);
 696                 qeth_put_reply(reply);
 697         }
 698         spin_unlock_irqrestore(&card->lock, flags);
 699         atomic_set(&card->write.irq_pending, 0);
 700 }
 701 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 702
 703 static int qeth_check_idx_response(struct qeth_card *card,
 704         unsigned char *buffer)
 705 {
 706         if (!buffer)
 707                 return 0;
 708
 709         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 710         if ((buffer[2] & 0xc0) == 0xc0) {
 711                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 712                            "with cause code 0x%02x%s\n",
 713                            buffer[4],
 714                            ((buffer[4] == 0x22) ?
 715                             " -- try another portname" : ""));
 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_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 731 {
 732         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 733                 dev_get_drvdata(&cdev->dev))->dev);
 734         return card;
 735 }
 736
 737 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 738                 __u32 len)
 739 {
 740         struct qeth_card *card;
 741
 742         card = CARD_FROM_CDEV(channel->ccwdev);
 743         QETH_CARD_TEXT(card, 4, "setupccw");
 744         if (channel == &card->read)
 745                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 746         else
 747                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 748         channel->ccw.count = len;
 749         channel->ccw.cda = (__u32) __pa(iob);
 750 }
 751
 752 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 753 {
 754         __u8 index;
 755
 756         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 757         index = channel->io_buf_no;
 758         do {
 759                 if (channel->iob[index].state == BUF_STATE_FREE) {
 760                         channel->iob[index].state = BUF_STATE_LOCKED;
 761                         channel->io_buf_no = (channel->io_buf_no + 1) %
 762                                 QETH_CMD_BUFFER_NO;
 763                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 764                         return channel->iob + index;
 765                 }
 766                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 767         } while (index != channel->io_buf_no);
 768
 769         return NULL;
 770 }
 771
 772 void qeth_release_buffer(struct qeth_channel *channel,
 773                 struct qeth_cmd_buffer *iob)
 774 {
 775         unsigned long flags;
 776
 777         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 778         spin_lock_irqsave(&channel->iob_lock, flags);
 779         memset(iob->data, 0, QETH_BUFSIZE);
 780         iob->state = BUF_STATE_FREE;
 781         iob->callback = qeth_send_control_data_cb;
 782         iob->rc = 0;
 783         spin_unlock_irqrestore(&channel->iob_lock, flags);
 784         wake_up(&channel->wait_q);
 785 }
 786 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 787
 788 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 789 {
 790         struct qeth_cmd_buffer *buffer = NULL;
 791         unsigned long flags;
 792
 793         spin_lock_irqsave(&channel->iob_lock, flags);
 794         buffer = __qeth_get_buffer(channel);
 795         spin_unlock_irqrestore(&channel->iob_lock, flags);
 796         return buffer;
 797 }
 798
 799 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 800 {
 801         struct qeth_cmd_buffer *buffer;
 802         wait_event(channel->wait_q,
 803                    ((buffer = qeth_get_buffer(channel)) != NULL));
 804         return buffer;
 805 }
 806 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 807
 808 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 809 {
 810         int cnt;
 811
 812         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 813                 qeth_release_buffer(channel, &channel->iob[cnt]);
 814         channel->buf_no = 0;
 815         channel->io_buf_no = 0;
 816 }
 817 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 818
 819 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 820                   struct qeth_cmd_buffer *iob)
 821 {
 822         struct qeth_card *card;
 823         struct qeth_reply *reply, *r;
 824         struct qeth_ipa_cmd *cmd;
 825         unsigned long flags;
 826         int keep_reply;
 827         int rc = 0;
 828
 829         card = CARD_FROM_CDEV(channel->ccwdev);
 830         QETH_CARD_TEXT(card, 4, "sndctlcb");
 831         rc = qeth_check_idx_response(card, iob->data);
 832         switch (rc) {
 833         case 0:
 834                 break;
 835         case -EIO:
 836                 qeth_clear_ipacmd_list(card);
 837                 qeth_schedule_recovery(card);
 838                 /* fall through */
 839         default:
 840                 goto out;
 841         }
 842
 843         cmd = qeth_check_ipa_data(card, iob);
 844         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 845                 goto out;
 846         /*in case of OSN : check if cmd is set */
 847         if (card->info.type == QETH_CARD_TYPE_OSN &&
 848             cmd &&
 849             cmd->hdr.command != IPA_CMD_STARTLAN &&
 850             card->osn_info.assist_cb != NULL) {
 851                 card->osn_info.assist_cb(card->dev, cmd);
 852                 goto out;
 853         }
 854
 855         spin_lock_irqsave(&card->lock, flags);
 856         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 857                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 858                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 859                         qeth_get_reply(reply);
 860                         list_del_init(&reply->list);
 861                         spin_unlock_irqrestore(&card->lock, flags);
 862                         keep_reply = 0;
 863                         if (reply->callback != NULL) {
 864                                 if (cmd) {
 865                                         reply->offset = (__u16)((char *)cmd -
 866                                                         (char *)iob->data);
 867                                         keep_reply = reply->callback(card,
 868                                                         reply,
 869                                                         (unsigned long)cmd);
 870                                 } else
 871                                         keep_reply = reply->callback(card,
 872                                                         reply,
 873                                                         (unsigned long)iob);
 874                         }
 875                         if (cmd)
 876                                 reply->rc = (u16) cmd->hdr.return_code;
 877                         else if (iob->rc)
 878                                 reply->rc = iob->rc;
 879                         if (keep_reply) {
 880                                 spin_lock_irqsave(&card->lock, flags);
 881                                 list_add_tail(&reply->list,
 882                                               &card->cmd_waiter_list);
 883                                 spin_unlock_irqrestore(&card->lock, flags);
 884                         } else {
 885                                 atomic_inc(&reply->received);
 886                                 wake_up(&reply->wait_q);
 887                         }
 888                         qeth_put_reply(reply);
 889                         goto out;
 890                 }
 891         }
 892         spin_unlock_irqrestore(&card->lock, flags);
 893 out:
 894         memcpy(&card->seqno.pdu_hdr_ack,
 895                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 896                 QETH_SEQ_NO_LENGTH);
 897         qeth_release_buffer(channel, iob);
 898 }
 899
 900 static int qeth_setup_channel(struct qeth_channel *channel)
 901 {
 902         int cnt;
 903
 904         QETH_DBF_TEXT(SETUP, 2, "setupch");
 905         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 906                 channel->iob[cnt].data =
 907                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 908                 if (channel->iob[cnt].data == NULL)
 909                         break;
 910                 channel->iob[cnt].state = BUF_STATE_FREE;
 911                 channel->iob[cnt].channel = channel;
 912                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 913                 channel->iob[cnt].rc = 0;
 914         }
 915         if (cnt < QETH_CMD_BUFFER_NO) {
 916                 while (cnt-- > 0)
 917                         kfree(channel->iob[cnt].data);
 918                 return -ENOMEM;
 919         }
 920         channel->buf_no = 0;
 921         channel->io_buf_no = 0;
 922         atomic_set(&channel->irq_pending, 0);
 923         spin_lock_init(&channel->iob_lock);
 924
 925         init_waitqueue_head(&channel->wait_q);
 926         return 0;
 927 }
 928
 929 static int qeth_set_thread_start_bit(struct qeth_card *card,
 930                 unsigned long thread)
 931 {
 932         unsigned long flags;
 933
 934         spin_lock_irqsave(&card->thread_mask_lock, flags);
 935         if (!(card->thread_allowed_mask & thread) ||
 936               (card->thread_start_mask & thread)) {
 937                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 938                 return -EPERM;
 939         }
 940         card->thread_start_mask |= thread;
 941         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 942         return 0;
 943 }
 944
 945 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 946 {
 947         unsigned long flags;
 948
 949         spin_lock_irqsave(&card->thread_mask_lock, flags);
 950         card->thread_start_mask &= ~thread;
 951         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 952         wake_up(&card->wait_q);
 953 }
 954 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 955
 956 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 957 {
 958         unsigned long flags;
 959
 960         spin_lock_irqsave(&card->thread_mask_lock, flags);
 961         card->thread_running_mask &= ~thread;
 962         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 963         wake_up(&card->wait_q);
 964 }
 965 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 966
 967 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 968 {
 969         unsigned long flags;
 970         int rc = 0;
 971
 972         spin_lock_irqsave(&card->thread_mask_lock, flags);
 973         if (card->thread_start_mask & thread) {
 974                 if ((card->thread_allowed_mask & thread) &&
 975                     !(card->thread_running_mask & thread)) {
 976                         rc = 1;
 977                         card->thread_start_mask &= ~thread;
 978                         card->thread_running_mask |= thread;
 979                 } else
 980                         rc = -EPERM;
 981         }
 982         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 983         return rc;
 984 }
 985
 986 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 987 {
 988         int rc = 0;
 989
 990         wait_event(card->wait_q,
 991                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 992         return rc;
 993 }
 994 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 995
 996 void qeth_schedule_recovery(struct qeth_card *card)
 997 {
 998         QETH_CARD_TEXT(card, 2, "startrec");
 999         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1000                 schedule_work(&card->kernel_thread_starter);
1001 }
1002 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1003
1004 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1005 {
1006         int dstat, cstat;
1007         char *sense;
1008         struct qeth_card *card;
1009
1010         sense = (char *) irb->ecw;
1011         cstat = irb->scsw.cmd.cstat;
1012         dstat = irb->scsw.cmd.dstat;
1013         card = CARD_FROM_CDEV(cdev);
1014
1015         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1016                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1017                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1018                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1019                 dev_warn(&cdev->dev, "The qeth device driver "
1020                         "failed to recover an error on the device\n");
1021                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1022                         dev_name(&cdev->dev), dstat, cstat);
1023                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1024                                 16, 1, irb, 64, 1);
1025                 return 1;
1026         }
1027
1028         if (dstat & DEV_STAT_UNIT_CHECK) {
1029                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1030                     SENSE_RESETTING_EVENT_FLAG) {
1031                         QETH_CARD_TEXT(card, 2, "REVIND");
1032                         return 1;
1033                 }
1034                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1035                     SENSE_COMMAND_REJECT_FLAG) {
1036                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1037                         return 1;
1038                 }
1039                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1040                         QETH_CARD_TEXT(card, 2, "AFFE");
1041                         return 1;
1042                 }
1043                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1044                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1045                         return 0;
1046                 }
1047                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1048                         return 1;
1049         }
1050         return 0;
1051 }
1052
1053 static long __qeth_check_irb_error(struct ccw_device *cdev,
1054                 unsigned long intparm, struct irb *irb)
1055 {
1056         struct qeth_card *card;
1057
1058         card = CARD_FROM_CDEV(cdev);
1059
1060         if (!card || !IS_ERR(irb))
1061                 return 0;
1062
1063         switch (PTR_ERR(irb)) {
1064         case -EIO:
1065                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1066                         dev_name(&cdev->dev));
1067                 QETH_CARD_TEXT(card, 2, "ckirberr");
1068                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1069                 break;
1070         case -ETIMEDOUT:
1071                 dev_warn(&cdev->dev, "A hardware operation timed out"
1072                         " on the device\n");
1073                 QETH_CARD_TEXT(card, 2, "ckirberr");
1074                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1075                 if (intparm == QETH_RCD_PARM) {
1076                         if (card->data.ccwdev == cdev) {
1077                                 card->data.state = CH_STATE_DOWN;
1078                                 wake_up(&card->wait_q);
1079                         }
1080                 }
1081                 break;
1082         default:
1083                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1084                         dev_name(&cdev->dev), PTR_ERR(irb));
1085                 QETH_CARD_TEXT(card, 2, "ckirberr");
1086                 QETH_CARD_TEXT(card, 2, "  rc???");
1087         }
1088         return PTR_ERR(irb);
1089 }
1090
1091 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1092                 struct irb *irb)
1093 {
1094         int rc;
1095         int cstat, dstat;
1096         struct qeth_cmd_buffer *buffer;
1097         struct qeth_channel *channel;
1098         struct qeth_card *card;
1099         struct qeth_cmd_buffer *iob;
1100         __u8 index;
1101
1102         if (__qeth_check_irb_error(cdev, intparm, irb))
1103                 return;
1104         cstat = irb->scsw.cmd.cstat;
1105         dstat = irb->scsw.cmd.dstat;
1106
1107         card = CARD_FROM_CDEV(cdev);
1108         if (!card)
1109                 return;
1110
1111         QETH_CARD_TEXT(card, 5, "irq");
1112
1113         if (card->read.ccwdev == cdev) {
1114                 channel = &card->read;
1115                 QETH_CARD_TEXT(card, 5, "read");
1116         } else if (card->write.ccwdev == cdev) {
1117                 channel = &card->write;
1118                 QETH_CARD_TEXT(card, 5, "write");
1119         } else {
1120                 channel = &card->data;
1121                 QETH_CARD_TEXT(card, 5, "data");
1122         }
1123         atomic_set(&channel->irq_pending, 0);
1124
1125         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1126                 channel->state = CH_STATE_STOPPED;
1127
1128         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1129                 channel->state = CH_STATE_HALTED;
1130
1131         /*let's wake up immediately on data channel*/
1132         if ((channel == &card->data) && (intparm != 0) &&
1133             (intparm != QETH_RCD_PARM))
1134                 goto out;
1135
1136         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1137                 QETH_CARD_TEXT(card, 6, "clrchpar");
1138                 /* we don't have to handle this further */
1139                 intparm = 0;
1140         }
1141         if (intparm == QETH_HALT_CHANNEL_PARM) {
1142                 QETH_CARD_TEXT(card, 6, "hltchpar");
1143                 /* we don't have to handle this further */
1144                 intparm = 0;
1145         }
1146         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1147             (dstat & DEV_STAT_UNIT_CHECK) ||
1148             (cstat)) {
1149                 if (irb->esw.esw0.erw.cons) {
1150                         dev_warn(&channel->ccwdev->dev,
1151                                 "The qeth device driver failed to recover "
1152                                 "an error on the device\n");
1153                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1154                                 "0x%X dstat 0x%X\n",
1155                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1156                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1157                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1158                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1159                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1160                 }
1161                 if (intparm == QETH_RCD_PARM) {
1162                         channel->state = CH_STATE_DOWN;
1163                         goto out;
1164                 }
1165                 rc = qeth_get_problem(cdev, irb);
1166                 if (rc) {
1167                         qeth_clear_ipacmd_list(card);
1168                         qeth_schedule_recovery(card);
1169                         goto out;
1170                 }
1171         }
1172
1173         if (intparm == QETH_RCD_PARM) {
1174                 channel->state = CH_STATE_RCD_DONE;
1175                 goto out;
1176         }
1177         if (intparm) {
1178                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1179                 buffer->state = BUF_STATE_PROCESSED;
1180         }
1181         if (channel == &card->data)
1182                 return;
1183         if (channel == &card->read &&
1184             channel->state == CH_STATE_UP)
1185                 qeth_issue_next_read(card);
1186
1187         iob = channel->iob;
1188         index = channel->buf_no;
1189         while (iob[index].state == BUF_STATE_PROCESSED) {
1190                 if (iob[index].callback != NULL)
1191                         iob[index].callback(channel, iob + index);
1192
1193                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1194         }
1195         channel->buf_no = index;
1196 out:
1197         wake_up(&card->wait_q);
1198         return;
1199 }
1200
1201 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1202                 struct qeth_qdio_out_buffer *buf,
1203                 enum iucv_tx_notify notification)
1204 {
1205         struct sk_buff *skb;
1206
1207         if (skb_queue_empty(&buf->skb_list))
1208                 goto out;
1209         skb = skb_peek(&buf->skb_list);
1210         while (skb) {
1211                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1212                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1213                 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1214                         if (skb->sk) {
1215                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1216                                 iucv->sk_txnotify(skb, notification);
1217                         }
1218                 }
1219                 if (skb_queue_is_last(&buf->skb_list, skb))
1220                         skb = NULL;
1221                 else
1222                         skb = skb_queue_next(&buf->skb_list, skb);
1223         }
1224 out:
1225         return;
1226 }
1227
1228 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1229 {
1230         struct sk_buff *skb;
1231         struct iucv_sock *iucv;
1232         int notify_general_error = 0;
1233
1234         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1235                 notify_general_error = 1;
1236
1237         /* release may never happen from within CQ tasklet scope */
1238         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1239
1240         skb = skb_dequeue(&buf->skb_list);
1241         while (skb) {
1242                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1243                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1244                 if (notify_general_error &&
1245                     be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1246                         if (skb->sk) {
1247                                 iucv = iucv_sk(skb->sk);
1248                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1249                         }
1250                 }
1251                 refcount_dec(&skb->users);
1252                 dev_kfree_skb_any(skb);
1253                 skb = skb_dequeue(&buf->skb_list);
1254         }
1255 }
1256
1257 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1258                 struct qeth_qdio_out_buffer *buf,
1259                 enum qeth_qdio_buffer_states newbufstate)
1260 {
1261         int i;
1262
1263         /* is PCI flag set on buffer? */
1264         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1265                 atomic_dec(&queue->set_pci_flags_count);
1266
1267         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1268                 qeth_release_skbs(buf);
1269         }
1270         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1271                 if (buf->buffer->element[i].addr && buf->is_header[i])
1272                         kmem_cache_free(qeth_core_header_cache,
1273                                 buf->buffer->element[i].addr);
1274                 buf->is_header[i] = 0;
1275                 buf->buffer->element[i].length = 0;
1276                 buf->buffer->element[i].addr = NULL;
1277                 buf->buffer->element[i].eflags = 0;
1278                 buf->buffer->element[i].sflags = 0;
1279         }
1280         buf->buffer->element[15].eflags = 0;
1281         buf->buffer->element[15].sflags = 0;
1282         buf->next_element_to_fill = 0;
1283         atomic_set(&buf->state, newbufstate);
1284 }
1285
1286 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1287 {
1288         int j;
1289
1290         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1291                 if (!q->bufs[j])
1292                         continue;
1293                 qeth_cleanup_handled_pending(q, j, 1);
1294                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1295                 if (free) {
1296                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1297                         q->bufs[j] = NULL;
1298                 }
1299         }
1300 }
1301
1302 void qeth_clear_qdio_buffers(struct qeth_card *card)
1303 {
1304         int i;
1305
1306         QETH_CARD_TEXT(card, 2, "clearqdbf");
1307         /* clear outbound buffers to free skbs */
1308         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1309                 if (card->qdio.out_qs[i]) {
1310                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1311                 }
1312         }
1313 }
1314 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1315
1316 static void qeth_free_buffer_pool(struct qeth_card *card)
1317 {
1318         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1319         int i = 0;
1320         list_for_each_entry_safe(pool_entry, tmp,
1321                                  &card->qdio.init_pool.entry_list, init_list){
1322                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1323                         free_page((unsigned long)pool_entry->elements[i]);
1324                 list_del(&pool_entry->init_list);
1325                 kfree(pool_entry);
1326         }
1327 }
1328
1329 static void qeth_clean_channel(struct qeth_channel *channel)
1330 {
1331         int cnt;
1332
1333         QETH_DBF_TEXT(SETUP, 2, "freech");
1334         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1335                 kfree(channel->iob[cnt].data);
1336 }
1337
1338 static void qeth_set_single_write_queues(struct qeth_card *card)
1339 {
1340         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1341             (card->qdio.no_out_queues == 4))
1342                 qeth_free_qdio_buffers(card);
1343
1344         card->qdio.no_out_queues = 1;
1345         if (card->qdio.default_out_queue != 0)
1346                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1347
1348         card->qdio.default_out_queue = 0;
1349 }
1350
1351 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1352 {
1353         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1354             (card->qdio.no_out_queues == 1)) {
1355                 qeth_free_qdio_buffers(card);
1356                 card->qdio.default_out_queue = 2;
1357         }
1358         card->qdio.no_out_queues = 4;
1359 }
1360
1361 static void qeth_update_from_chp_desc(struct qeth_card *card)
1362 {
1363         struct ccw_device *ccwdev;
1364         struct channel_path_desc *chp_dsc;
1365
1366         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1367
1368         ccwdev = card->data.ccwdev;
1369         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1370         if (!chp_dsc)
1371                 goto out;
1372
1373         card->info.func_level = 0x4100 + chp_dsc->desc;
1374         if (card->info.type == QETH_CARD_TYPE_IQD)
1375                 goto out;
1376
1377         /* CHPP field bit 6 == 1 -> single queue */
1378         if ((chp_dsc->chpp & 0x02) == 0x02)
1379                 qeth_set_single_write_queues(card);
1380         else
1381                 qeth_set_multiple_write_queues(card);
1382 out:
1383         kfree(chp_dsc);
1384         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1385         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1386 }
1387
1388 static void qeth_init_qdio_info(struct qeth_card *card)
1389 {
1390         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1391         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1392         /* inbound */
1393         card->qdio.no_in_queues = 1;
1394         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1395         if (card->info.type == QETH_CARD_TYPE_IQD)
1396                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1397         else
1398                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1399         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1400         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1401         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1402 }
1403
1404 static void qeth_set_intial_options(struct qeth_card *card)
1405 {
1406         card->options.route4.type = NO_ROUTER;
1407         card->options.route6.type = NO_ROUTER;
1408         card->options.fake_broadcast = 0;
1409         card->options.performance_stats = 0;
1410         card->options.rx_sg_cb = QETH_RX_SG_CB;
1411         card->options.isolation = ISOLATION_MODE_NONE;
1412         card->options.cq = QETH_CQ_DISABLED;
1413 }
1414
1415 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1416 {
1417         unsigned long flags;
1418         int rc = 0;
1419
1420         spin_lock_irqsave(&card->thread_mask_lock, flags);
1421         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1422                         (u8) card->thread_start_mask,
1423                         (u8) card->thread_allowed_mask,
1424                         (u8) card->thread_running_mask);
1425         rc = (card->thread_start_mask & thread);
1426         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1427         return rc;
1428 }
1429
1430 static void qeth_start_kernel_thread(struct work_struct *work)
1431 {
1432         struct task_struct *ts;
1433         struct qeth_card *card = container_of(work, struct qeth_card,
1434                                         kernel_thread_starter);
1435         QETH_CARD_TEXT(card , 2, "strthrd");
1436
1437         if (card->read.state != CH_STATE_UP &&
1438             card->write.state != CH_STATE_UP)
1439                 return;
1440         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1441                 ts = kthread_run(card->discipline->recover, (void *)card,
1442                                 "qeth_recover");
1443                 if (IS_ERR(ts)) {
1444                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1445                         qeth_clear_thread_running_bit(card,
1446                                 QETH_RECOVER_THREAD);
1447                 }
1448         }
1449 }
1450
1451 static void qeth_buffer_reclaim_work(struct work_struct *);
1452 static int qeth_setup_card(struct qeth_card *card)
1453 {
1454
1455         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1456         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1457
1458         card->read.state  = CH_STATE_DOWN;
1459         card->write.state = CH_STATE_DOWN;
1460         card->data.state  = CH_STATE_DOWN;
1461         card->state = CARD_STATE_DOWN;
1462         card->lan_online = 0;
1463         card->read_or_write_problem = 0;
1464         card->dev = NULL;
1465         spin_lock_init(&card->vlanlock);
1466         spin_lock_init(&card->mclock);
1467         spin_lock_init(&card->lock);
1468         spin_lock_init(&card->ip_lock);
1469         spin_lock_init(&card->thread_mask_lock);
1470         mutex_init(&card->conf_mutex);
1471         mutex_init(&card->discipline_mutex);
1472         card->thread_start_mask = 0;
1473         card->thread_allowed_mask = 0;
1474         card->thread_running_mask = 0;
1475         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1476         INIT_LIST_HEAD(&card->cmd_waiter_list);
1477         init_waitqueue_head(&card->wait_q);
1478         /* initial options */
1479         qeth_set_intial_options(card);
1480         /* IP address takeover */
1481         INIT_LIST_HEAD(&card->ipato.entries);
1482         card->ipato.enabled = false;
1483         card->ipato.invert4 = false;
1484         card->ipato.invert6 = false;
1485         /* init QDIO stuff */
1486         qeth_init_qdio_info(card);
1487         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1488         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1489         return 0;
1490 }
1491
1492 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1493 {
1494         struct qeth_card *card = container_of(slr, struct qeth_card,
1495                                         qeth_service_level);
1496         if (card->info.mcl_level[0])
1497                 seq_printf(m, "qeth: %s firmware level %s\n",
1498                         CARD_BUS_ID(card), card->info.mcl_level);
1499 }
1500
1501 static struct qeth_card *qeth_alloc_card(void)
1502 {
1503         struct qeth_card *card;
1504
1505         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1506         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1507         if (!card)
1508                 goto out;
1509         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1510         if (qeth_setup_channel(&card->read))
1511                 goto out_ip;
1512         if (qeth_setup_channel(&card->write))
1513                 goto out_channel;
1514         card->options.layer2 = -1;
1515         card->qeth_service_level.seq_print = qeth_core_sl_print;
1516         register_service_level(&card->qeth_service_level);
1517         return card;
1518
1519 out_channel:
1520         qeth_clean_channel(&card->read);
1521 out_ip:
1522         kfree(card);
1523 out:
1524         return NULL;
1525 }
1526
1527 static void qeth_determine_card_type(struct qeth_card *card)
1528 {
1529         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1530
1531         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1532         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1533         card->info.type = CARD_RDEV(card)->id.driver_info;
1534         card->qdio.no_out_queues = QETH_MAX_QUEUES;
1535         if (card->info.type == QETH_CARD_TYPE_IQD)
1536                 card->info.is_multicast_different = 0x0103;
1537         qeth_update_from_chp_desc(card);
1538 }
1539
1540 static int qeth_clear_channel(struct qeth_channel *channel)
1541 {
1542         unsigned long flags;
1543         struct qeth_card *card;
1544         int rc;
1545
1546         card = CARD_FROM_CDEV(channel->ccwdev);
1547         QETH_CARD_TEXT(card, 3, "clearch");
1548         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1549         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1550         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1551
1552         if (rc)
1553                 return rc;
1554         rc = wait_event_interruptible_timeout(card->wait_q,
1555                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1556         if (rc == -ERESTARTSYS)
1557                 return rc;
1558         if (channel->state != CH_STATE_STOPPED)
1559                 return -ETIME;
1560         channel->state = CH_STATE_DOWN;
1561         return 0;
1562 }
1563
1564 static int qeth_halt_channel(struct qeth_channel *channel)
1565 {
1566         unsigned long flags;
1567         struct qeth_card *card;
1568         int rc;
1569
1570         card = CARD_FROM_CDEV(channel->ccwdev);
1571         QETH_CARD_TEXT(card, 3, "haltch");
1572         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1573         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1574         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1575
1576         if (rc)
1577                 return rc;
1578         rc = wait_event_interruptible_timeout(card->wait_q,
1579                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1580         if (rc == -ERESTARTSYS)
1581                 return rc;
1582         if (channel->state != CH_STATE_HALTED)
1583                 return -ETIME;
1584         return 0;
1585 }
1586
1587 static int qeth_halt_channels(struct qeth_card *card)
1588 {
1589         int rc1 = 0, rc2 = 0, rc3 = 0;
1590
1591         QETH_CARD_TEXT(card, 3, "haltchs");
1592         rc1 = qeth_halt_channel(&card->read);
1593         rc2 = qeth_halt_channel(&card->write);
1594         rc3 = qeth_halt_channel(&card->data);
1595         if (rc1)
1596                 return rc1;
1597         if (rc2)
1598                 return rc2;
1599         return rc3;
1600 }
1601
1602 static int qeth_clear_channels(struct qeth_card *card)
1603 {
1604         int rc1 = 0, rc2 = 0, rc3 = 0;
1605
1606         QETH_CARD_TEXT(card, 3, "clearchs");
1607         rc1 = qeth_clear_channel(&card->read);
1608         rc2 = qeth_clear_channel(&card->write);
1609         rc3 = qeth_clear_channel(&card->data);
1610         if (rc1)
1611                 return rc1;
1612         if (rc2)
1613                 return rc2;
1614         return rc3;
1615 }
1616
1617 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1618 {
1619         int rc = 0;
1620
1621         QETH_CARD_TEXT(card, 3, "clhacrd");
1622
1623         if (halt)
1624                 rc = qeth_halt_channels(card);
1625         if (rc)
1626                 return rc;
1627         return qeth_clear_channels(card);
1628 }
1629
1630 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1631 {
1632         int rc = 0;
1633
1634         QETH_CARD_TEXT(card, 3, "qdioclr");
1635         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1636                 QETH_QDIO_CLEANING)) {
1637         case QETH_QDIO_ESTABLISHED:
1638                 if (card->info.type == QETH_CARD_TYPE_IQD)
1639                         rc = qdio_shutdown(CARD_DDEV(card),
1640                                 QDIO_FLAG_CLEANUP_USING_HALT);
1641                 else
1642                         rc = qdio_shutdown(CARD_DDEV(card),
1643                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1644                 if (rc)
1645                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1646                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1647                 break;
1648         case QETH_QDIO_CLEANING:
1649                 return rc;
1650         default:
1651                 break;
1652         }
1653         rc = qeth_clear_halt_card(card, use_halt);
1654         if (rc)
1655                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1656         card->state = CARD_STATE_DOWN;
1657         return rc;
1658 }
1659 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1660
1661 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1662                                int *length)
1663 {
1664         struct ciw *ciw;
1665         char *rcd_buf;
1666         int ret;
1667         struct qeth_channel *channel = &card->data;
1668         unsigned long flags;
1669
1670         /*
1671          * scan for RCD command in extended SenseID data
1672          */
1673         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1674         if (!ciw || ciw->cmd == 0)
1675                 return -EOPNOTSUPP;
1676         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1677         if (!rcd_buf)
1678                 return -ENOMEM;
1679
1680         channel->ccw.cmd_code = ciw->cmd;
1681         channel->ccw.cda = (__u32) __pa(rcd_buf);
1682         channel->ccw.count = ciw->count;
1683         channel->ccw.flags = CCW_FLAG_SLI;
1684         channel->state = CH_STATE_RCD;
1685         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1686         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1687                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1688                                        QETH_RCD_TIMEOUT);
1689         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1690         if (!ret)
1691                 wait_event(card->wait_q,
1692                            (channel->state == CH_STATE_RCD_DONE ||
1693                             channel->state == CH_STATE_DOWN));
1694         if (channel->state == CH_STATE_DOWN)
1695                 ret = -EIO;
1696         else
1697                 channel->state = CH_STATE_DOWN;
1698         if (ret) {
1699                 kfree(rcd_buf);
1700                 *buffer = NULL;
1701                 *length = 0;
1702         } else {
1703                 *length = ciw->count;
1704                 *buffer = rcd_buf;
1705         }
1706         return ret;
1707 }
1708
1709 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1710 {
1711         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1712         card->info.chpid = prcd[30];
1713         card->info.unit_addr2 = prcd[31];
1714         card->info.cula = prcd[63];
1715         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1716                                (prcd[0x11] == _ascebc['M']));
1717 }
1718
1719 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1720 {
1721         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1722         struct diag26c_vnic_resp *response = NULL;
1723         struct diag26c_vnic_req *request = NULL;
1724         struct ccw_dev_id id;
1725         char userid[80];
1726         int rc = 0;
1727
1728         QETH_DBF_TEXT(SETUP, 2, "vmlayer");
1729
1730         cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1731         if (rc)
1732                 goto out;
1733
1734         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1735         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1736         if (!request || !response) {
1737                 rc = -ENOMEM;
1738                 goto out;
1739         }
1740
1741         ccw_device_get_id(CARD_RDEV(card), &id);
1742         request->resp_buf_len = sizeof(*response);
1743         request->resp_version = DIAG26C_VERSION6_VM65918;
1744         request->req_format = DIAG26C_VNIC_INFO;
1745         ASCEBC(userid, 8);
1746         memcpy(&request->sys_name, userid, 8);
1747         request->devno = id.devno;
1748
1749         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1750         rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1751         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1752         if (rc)
1753                 goto out;
1754         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1755
1756         if (request->resp_buf_len < sizeof(*response) ||
1757             response->version != request->resp_version) {
1758                 rc = -EIO;
1759                 goto out;
1760         }
1761
1762         if (response->protocol == VNIC_INFO_PROT_L2)
1763                 disc = QETH_DISCIPLINE_LAYER2;
1764         else if (response->protocol == VNIC_INFO_PROT_L3)
1765                 disc = QETH_DISCIPLINE_LAYER3;
1766
1767 out:
1768         kfree(response);
1769         kfree(request);
1770         if (rc)
1771                 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc);
1772         return disc;
1773 }
1774
1775 /* Determine whether the device requires a specific layer discipline */
1776 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1777 {
1778         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1779
1780         if (card->info.type == QETH_CARD_TYPE_OSM ||
1781             card->info.type == QETH_CARD_TYPE_OSN)
1782                 disc = QETH_DISCIPLINE_LAYER2;
1783         else if (card->info.guestlan)
1784                 disc = (card->info.type == QETH_CARD_TYPE_IQD) ?
1785                                 QETH_DISCIPLINE_LAYER3 :
1786                                 qeth_vm_detect_layer(card);
1787
1788         switch (disc) {
1789         case QETH_DISCIPLINE_LAYER2:
1790                 QETH_DBF_TEXT(SETUP, 3, "force l2");
1791                 break;
1792         case QETH_DISCIPLINE_LAYER3:
1793                 QETH_DBF_TEXT(SETUP, 3, "force l3");
1794                 break;
1795         default:
1796                 QETH_DBF_TEXT(SETUP, 3, "force no");
1797         }
1798
1799         return disc;
1800 }
1801
1802 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1803 {
1804         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1805
1806         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1807             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1808                 card->info.blkt.time_total = 0;
1809                 card->info.blkt.inter_packet = 0;
1810                 card->info.blkt.inter_packet_jumbo = 0;
1811         } else {
1812                 card->info.blkt.time_total = 250;
1813                 card->info.blkt.inter_packet = 5;
1814                 card->info.blkt.inter_packet_jumbo = 15;
1815         }
1816 }
1817
1818 static void qeth_init_tokens(struct qeth_card *card)
1819 {
1820         card->token.issuer_rm_w = 0x00010103UL;
1821         card->token.cm_filter_w = 0x00010108UL;
1822         card->token.cm_connection_w = 0x0001010aUL;
1823         card->token.ulp_filter_w = 0x0001010bUL;
1824         card->token.ulp_connection_w = 0x0001010dUL;
1825 }
1826
1827 static void qeth_init_func_level(struct qeth_card *card)
1828 {
1829         switch (card->info.type) {
1830         case QETH_CARD_TYPE_IQD:
1831                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1832                 break;
1833         case QETH_CARD_TYPE_OSD:
1834         case QETH_CARD_TYPE_OSN:
1835                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1836                 break;
1837         default:
1838                 break;
1839         }
1840 }
1841
1842 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1843                 void (*idx_reply_cb)(struct qeth_channel *,
1844                         struct qeth_cmd_buffer *))
1845 {
1846         struct qeth_cmd_buffer *iob;
1847         unsigned long flags;
1848         int rc;
1849         struct qeth_card *card;
1850
1851         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1852         card = CARD_FROM_CDEV(channel->ccwdev);
1853         iob = qeth_get_buffer(channel);
1854         if (!iob)
1855                 return -ENOMEM;
1856         iob->callback = idx_reply_cb;
1857         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1858         channel->ccw.count = QETH_BUFSIZE;
1859         channel->ccw.cda = (__u32) __pa(iob->data);
1860
1861         wait_event(card->wait_q,
1862                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1863         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1864         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1865         rc = ccw_device_start(channel->ccwdev,
1866                               &channel->ccw, (addr_t) iob, 0, 0);
1867         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1868
1869         if (rc) {
1870                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1871                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1872                 atomic_set(&channel->irq_pending, 0);
1873                 wake_up(&card->wait_q);
1874                 return rc;
1875         }
1876         rc = wait_event_interruptible_timeout(card->wait_q,
1877                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1878         if (rc == -ERESTARTSYS)
1879                 return rc;
1880         if (channel->state != CH_STATE_UP) {
1881                 rc = -ETIME;
1882                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1883                 qeth_clear_cmd_buffers(channel);
1884         } else
1885                 rc = 0;
1886         return rc;
1887 }
1888
1889 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1890                 void (*idx_reply_cb)(struct qeth_channel *,
1891                         struct qeth_cmd_buffer *))
1892 {
1893         struct qeth_card *card;
1894         struct qeth_cmd_buffer *iob;
1895         unsigned long flags;
1896         __u16 temp;
1897         __u8 tmp;
1898         int rc;
1899         struct ccw_dev_id temp_devid;
1900
1901         card = CARD_FROM_CDEV(channel->ccwdev);
1902
1903         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1904
1905         iob = qeth_get_buffer(channel);
1906         if (!iob)
1907                 return -ENOMEM;
1908         iob->callback = idx_reply_cb;
1909         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1910         channel->ccw.count = IDX_ACTIVATE_SIZE;
1911         channel->ccw.cda = (__u32) __pa(iob->data);
1912         if (channel == &card->write) {
1913                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1914                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1915                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1916                 card->seqno.trans_hdr++;
1917         } else {
1918                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1919                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1920                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1921         }
1922         tmp = ((__u8)card->info.portno) | 0x80;
1923         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1924         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1925                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1926         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1927                &card->info.func_level, sizeof(__u16));
1928         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1929         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1930         temp = (card->info.cula << 8) + card->info.unit_addr2;
1931         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1932
1933         wait_event(card->wait_q,
1934                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1935         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1936         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1937         rc = ccw_device_start(channel->ccwdev,
1938                               &channel->ccw, (addr_t) iob, 0, 0);
1939         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1940
1941         if (rc) {
1942                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1943                         rc);
1944                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1945                 atomic_set(&channel->irq_pending, 0);
1946                 wake_up(&card->wait_q);
1947                 return rc;
1948         }
1949         rc = wait_event_interruptible_timeout(card->wait_q,
1950                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1951         if (rc == -ERESTARTSYS)
1952                 return rc;
1953         if (channel->state != CH_STATE_ACTIVATING) {
1954                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1955                         " failed to recover an error on the device\n");
1956                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1957                         dev_name(&channel->ccwdev->dev));
1958                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1959                 qeth_clear_cmd_buffers(channel);
1960                 return -ETIME;
1961         }
1962         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1963 }
1964
1965 static int qeth_peer_func_level(int level)
1966 {
1967         if ((level & 0xff) == 8)
1968                 return (level & 0xff) + 0x400;
1969         if (((level >> 8) & 3) == 1)
1970                 return (level & 0xff) + 0x200;
1971         return level;
1972 }
1973
1974 static void qeth_idx_write_cb(struct qeth_channel *channel,
1975                 struct qeth_cmd_buffer *iob)
1976 {
1977         struct qeth_card *card;
1978         __u16 temp;
1979
1980         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1981
1982         if (channel->state == CH_STATE_DOWN) {
1983                 channel->state = CH_STATE_ACTIVATING;
1984                 goto out;
1985         }
1986         card = CARD_FROM_CDEV(channel->ccwdev);
1987
1988         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1989                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1990                         dev_err(&card->write.ccwdev->dev,
1991                                 "The adapter is used exclusively by another "
1992                                 "host\n");
1993                 else
1994                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1995                                 " negative reply\n",
1996                                 dev_name(&card->write.ccwdev->dev));
1997                 goto out;
1998         }
1999         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2000         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
2001                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
2002                         "function level mismatch (sent: 0x%x, received: "
2003                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
2004                         card->info.func_level, temp);
2005                 goto out;
2006         }
2007         channel->state = CH_STATE_UP;
2008 out:
2009         qeth_release_buffer(channel, iob);
2010 }
2011
2012 static void qeth_idx_read_cb(struct qeth_channel *channel,
2013                 struct qeth_cmd_buffer *iob)
2014 {
2015         struct qeth_card *card;
2016         __u16 temp;
2017
2018         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
2019         if (channel->state == CH_STATE_DOWN) {
2020                 channel->state = CH_STATE_ACTIVATING;
2021                 goto out;
2022         }
2023
2024         card = CARD_FROM_CDEV(channel->ccwdev);
2025         if (qeth_check_idx_response(card, iob->data))
2026                         goto out;
2027
2028         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
2029                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2030                 case QETH_IDX_ACT_ERR_EXCL:
2031                         dev_err(&card->write.ccwdev->dev,
2032                                 "The adapter is used exclusively by another "
2033                                 "host\n");
2034                         break;
2035                 case QETH_IDX_ACT_ERR_AUTH:
2036                 case QETH_IDX_ACT_ERR_AUTH_USER:
2037                         dev_err(&card->read.ccwdev->dev,
2038                                 "Setting the device online failed because of "
2039                                 "insufficient authorization\n");
2040                         break;
2041                 default:
2042                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
2043                                 " negative reply\n",
2044                                 dev_name(&card->read.ccwdev->dev));
2045                 }
2046                 QETH_CARD_TEXT_(card, 2, "idxread%c",
2047                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
2048                 goto out;
2049         }
2050
2051         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2052         if (temp != qeth_peer_func_level(card->info.func_level)) {
2053                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
2054                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
2055                         dev_name(&card->read.ccwdev->dev),
2056                         card->info.func_level, temp);
2057                 goto out;
2058         }
2059         memcpy(&card->token.issuer_rm_r,
2060                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2061                QETH_MPC_TOKEN_LENGTH);
2062         memcpy(&card->info.mcl_level[0],
2063                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2064         channel->state = CH_STATE_UP;
2065 out:
2066         qeth_release_buffer(channel, iob);
2067 }
2068
2069 void qeth_prepare_control_data(struct qeth_card *card, int len,
2070                 struct qeth_cmd_buffer *iob)
2071 {
2072         qeth_setup_ccw(&card->write, iob->data, len);
2073         iob->callback = qeth_release_buffer;
2074
2075         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2076                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2077         card->seqno.trans_hdr++;
2078         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2079                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2080         card->seqno.pdu_hdr++;
2081         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2082                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2083         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2084 }
2085 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2086
2087 /**
2088  * qeth_send_control_data() -   send control command to the card
2089  * @card:                       qeth_card structure pointer
2090  * @len:                        size of the command buffer
2091  * @iob:                        qeth_cmd_buffer pointer
2092  * @reply_cb:                   callback function pointer
2093  * @cb_card:                    pointer to the qeth_card structure
2094  * @cb_reply:                   pointer to the qeth_reply structure
2095  * @cb_cmd:                     pointer to the original iob for non-IPA
2096  *                              commands, or to the qeth_ipa_cmd structure
2097  *                              for the IPA commands.
2098  * @reply_param:                private pointer passed to the callback
2099  *
2100  * Returns the value of the `return_code' field of the response
2101  * block returned from the hardware, or other error indication.
2102  * Value of zero indicates successful execution of the command.
2103  *
2104  * Callback function gets called one or more times, with cb_cmd
2105  * pointing to the response returned by the hardware. Callback
2106  * function must return non-zero if more reply blocks are expected,
2107  * and zero if the last or only reply block is received. Callback
2108  * function can get the value of the reply_param pointer from the
2109  * field 'param' of the structure qeth_reply.
2110  */
2111
2112 int qeth_send_control_data(struct qeth_card *card, int len,
2113                 struct qeth_cmd_buffer *iob,
2114                 int (*reply_cb)(struct qeth_card *cb_card,
2115                                 struct qeth_reply *cb_reply,
2116                                 unsigned long cb_cmd),
2117                 void *reply_param)
2118 {
2119         int rc;
2120         unsigned long flags;
2121         struct qeth_reply *reply = NULL;
2122         unsigned long timeout, event_timeout;
2123         struct qeth_ipa_cmd *cmd = NULL;
2124
2125         QETH_CARD_TEXT(card, 2, "sendctl");
2126
2127         if (card->read_or_write_problem) {
2128                 qeth_release_buffer(iob->channel, iob);
2129                 return -EIO;
2130         }
2131         reply = qeth_alloc_reply(card);
2132         if (!reply) {
2133                 return -ENOMEM;
2134         }
2135         reply->callback = reply_cb;
2136         reply->param = reply_param;
2137         if (card->state == CARD_STATE_DOWN)
2138                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2139         else
2140                 reply->seqno = card->seqno.ipa++;
2141         init_waitqueue_head(&reply->wait_q);
2142         spin_lock_irqsave(&card->lock, flags);
2143         list_add_tail(&reply->list, &card->cmd_waiter_list);
2144         spin_unlock_irqrestore(&card->lock, flags);
2145
2146         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2147         qeth_prepare_control_data(card, len, iob);
2148
2149         if (IS_IPA(iob->data)) {
2150                 cmd = __ipa_cmd(iob);
2151                 event_timeout = QETH_IPA_TIMEOUT;
2152         } else {
2153                 event_timeout = QETH_TIMEOUT;
2154         }
2155
2156         timeout = jiffies + event_timeout;
2157
2158         QETH_CARD_TEXT(card, 6, "noirqpnd");
2159         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2160         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2161                               (addr_t) iob, 0, 0);
2162         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2163         if (rc) {
2164                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2165                         "ccw_device_start rc = %i\n",
2166                         dev_name(&card->write.ccwdev->dev), rc);
2167                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2168                 spin_lock_irqsave(&card->lock, flags);
2169                 list_del_init(&reply->list);
2170                 qeth_put_reply(reply);
2171                 spin_unlock_irqrestore(&card->lock, flags);
2172                 qeth_release_buffer(iob->channel, iob);
2173                 atomic_set(&card->write.irq_pending, 0);
2174                 wake_up(&card->wait_q);
2175                 return rc;
2176         }
2177
2178         /* we have only one long running ipassist, since we can ensure
2179            process context of this command we can sleep */
2180         if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2181             cmd->hdr.prot_version == QETH_PROT_IPV4) {
2182                 if (!wait_event_timeout(reply->wait_q,
2183                     atomic_read(&reply->received), event_timeout))
2184                         goto time_err;
2185         } else {
2186                 while (!atomic_read(&reply->received)) {
2187                         if (time_after(jiffies, timeout))
2188                                 goto time_err;
2189                         cpu_relax();
2190                 }
2191         }
2192
2193         if (reply->rc == -EIO)
2194                 goto error;
2195         rc = reply->rc;
2196         qeth_put_reply(reply);
2197         return rc;
2198
2199 time_err:
2200         reply->rc = -ETIME;
2201         spin_lock_irqsave(&reply->card->lock, flags);
2202         list_del_init(&reply->list);
2203         spin_unlock_irqrestore(&reply->card->lock, flags);
2204         atomic_inc(&reply->received);
2205 error:
2206         atomic_set(&card->write.irq_pending, 0);
2207         qeth_release_buffer(iob->channel, iob);
2208         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2209         rc = reply->rc;
2210         qeth_put_reply(reply);
2211         return rc;
2212 }
2213 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2214
2215 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2216                 unsigned long data)
2217 {
2218         struct qeth_cmd_buffer *iob;
2219
2220         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2221
2222         iob = (struct qeth_cmd_buffer *) data;
2223         memcpy(&card->token.cm_filter_r,
2224                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2225                QETH_MPC_TOKEN_LENGTH);
2226         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2227         return 0;
2228 }
2229
2230 static int qeth_cm_enable(struct qeth_card *card)
2231 {
2232         int rc;
2233         struct qeth_cmd_buffer *iob;
2234
2235         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2236
2237         iob = qeth_wait_for_buffer(&card->write);
2238         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2239         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2240                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2241         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2242                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2243
2244         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2245                                     qeth_cm_enable_cb, NULL);
2246         return rc;
2247 }
2248
2249 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2250                 unsigned long data)
2251 {
2252
2253         struct qeth_cmd_buffer *iob;
2254
2255         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2256
2257         iob = (struct qeth_cmd_buffer *) data;
2258         memcpy(&card->token.cm_connection_r,
2259                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2260                QETH_MPC_TOKEN_LENGTH);
2261         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2262         return 0;
2263 }
2264
2265 static int qeth_cm_setup(struct qeth_card *card)
2266 {
2267         int rc;
2268         struct qeth_cmd_buffer *iob;
2269
2270         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2271
2272         iob = qeth_wait_for_buffer(&card->write);
2273         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2274         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2275                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2276         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2277                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2278         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2279                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2280         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2281                                     qeth_cm_setup_cb, NULL);
2282         return rc;
2283
2284 }
2285
2286 static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2287 {
2288         switch (card->info.type) {
2289         case QETH_CARD_TYPE_IQD:
2290                 return card->info.max_mtu;
2291         case QETH_CARD_TYPE_OSD:
2292         case QETH_CARD_TYPE_OSX:
2293                 if (!card->options.layer2)
2294                         return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */
2295                 /* fall through */
2296         default:
2297                 return ETH_DATA_LEN;
2298         }
2299 }
2300
2301 static int qeth_get_mtu_outof_framesize(int framesize)
2302 {
2303         switch (framesize) {
2304         case 0x4000:
2305                 return 8192;
2306         case 0x6000:
2307                 return 16384;
2308         case 0xa000:
2309                 return 32768;
2310         case 0xffff:
2311                 return 57344;
2312         default:
2313                 return 0;
2314         }
2315 }
2316
2317 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2318 {
2319         switch (card->info.type) {
2320         case QETH_CARD_TYPE_OSD:
2321         case QETH_CARD_TYPE_OSM:
2322         case QETH_CARD_TYPE_OSX:
2323         case QETH_CARD_TYPE_IQD:
2324                 return ((mtu >= 576) &&
2325                         (mtu <= card->info.max_mtu));
2326         case QETH_CARD_TYPE_OSN:
2327         default:
2328                 return 1;
2329         }
2330 }
2331
2332 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2333                 unsigned long data)
2334 {
2335
2336         __u16 mtu, framesize;
2337         __u16 len;
2338         __u8 link_type;
2339         struct qeth_cmd_buffer *iob;
2340
2341         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2342
2343         iob = (struct qeth_cmd_buffer *) data;
2344         memcpy(&card->token.ulp_filter_r,
2345                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2346                QETH_MPC_TOKEN_LENGTH);
2347         if (card->info.type == QETH_CARD_TYPE_IQD) {
2348                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2349                 mtu = qeth_get_mtu_outof_framesize(framesize);
2350                 if (!mtu) {
2351                         iob->rc = -EINVAL;
2352                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2353                         return 0;
2354                 }
2355                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2356                         /* frame size has changed */
2357                         if (card->dev &&
2358                             ((card->dev->mtu == card->info.initial_mtu) ||
2359                              (card->dev->mtu > mtu)))
2360                                 card->dev->mtu = mtu;
2361                         qeth_free_qdio_buffers(card);
2362                 }
2363                 card->info.initial_mtu = mtu;
2364                 card->info.max_mtu = mtu;
2365                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2366         } else {
2367                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2368                         iob->data);
2369                 card->info.initial_mtu = min(card->info.max_mtu,
2370                                         qeth_get_initial_mtu_for_card(card));
2371                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2372         }
2373
2374         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2375         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2376                 memcpy(&link_type,
2377                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2378                 card->info.link_type = link_type;
2379         } else
2380                 card->info.link_type = 0;
2381         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2382         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2383         return 0;
2384 }
2385
2386 static int qeth_ulp_enable(struct qeth_card *card)
2387 {
2388         int rc;
2389         char prot_type;
2390         struct qeth_cmd_buffer *iob;
2391
2392         /*FIXME: trace view callbacks*/
2393         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2394
2395         iob = qeth_wait_for_buffer(&card->write);
2396         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2397
2398         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2399                 (__u8) card->info.portno;
2400         if (card->options.layer2)
2401                 if (card->info.type == QETH_CARD_TYPE_OSN)
2402                         prot_type = QETH_PROT_OSN2;
2403                 else
2404                         prot_type = QETH_PROT_LAYER2;
2405         else
2406                 prot_type = QETH_PROT_TCPIP;
2407
2408         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2409         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2410                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2411         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2412                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2413         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2414                                     qeth_ulp_enable_cb, NULL);
2415         return rc;
2416
2417 }
2418
2419 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2420                 unsigned long data)
2421 {
2422         struct qeth_cmd_buffer *iob;
2423
2424         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2425
2426         iob = (struct qeth_cmd_buffer *) data;
2427         memcpy(&card->token.ulp_connection_r,
2428                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2429                QETH_MPC_TOKEN_LENGTH);
2430         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2431                      3)) {
2432                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2433                 dev_err(&card->gdev->dev, "A connection could not be "
2434                         "established because of an OLM limit\n");
2435                 iob->rc = -EMLINK;
2436         }
2437         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2438         return 0;
2439 }
2440
2441 static int qeth_ulp_setup(struct qeth_card *card)
2442 {
2443         int rc;
2444         __u16 temp;
2445         struct qeth_cmd_buffer *iob;
2446         struct ccw_dev_id dev_id;
2447
2448         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2449
2450         iob = qeth_wait_for_buffer(&card->write);
2451         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2452
2453         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2454                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2455         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2456                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2457         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2458                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2459
2460         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2461         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2462         temp = (card->info.cula << 8) + card->info.unit_addr2;
2463         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2464         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2465                                     qeth_ulp_setup_cb, NULL);
2466         return rc;
2467 }
2468
2469 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2470 {
2471         int rc;
2472         struct qeth_qdio_out_buffer *newbuf;
2473
2474         rc = 0;
2475         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2476         if (!newbuf) {
2477                 rc = -ENOMEM;
2478                 goto out;
2479         }
2480         newbuf->buffer = q->qdio_bufs[bidx];
2481         skb_queue_head_init(&newbuf->skb_list);
2482         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2483         newbuf->q = q;
2484         newbuf->aob = NULL;
2485         newbuf->next_pending = q->bufs[bidx];
2486         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2487         q->bufs[bidx] = newbuf;
2488         if (q->bufstates) {
2489                 q->bufstates[bidx].user = newbuf;
2490                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2491                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2492                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2493                                 (long) newbuf->next_pending);
2494         }
2495 out:
2496         return rc;
2497 }
2498
2499 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2500 {
2501         if (!q)
2502                 return;
2503
2504         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2505         kfree(q);
2506 }
2507
2508 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2509 {
2510         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2511
2512         if (!q)
2513                 return NULL;
2514
2515         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2516                 kfree(q);
2517                 return NULL;
2518         }
2519         return q;
2520 }
2521
2522 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2523 {
2524         int i, j;
2525
2526         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2527
2528         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2529                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2530                 return 0;
2531
2532         QETH_DBF_TEXT(SETUP, 2, "inq");
2533         card->qdio.in_q = qeth_alloc_qdio_queue();
2534         if (!card->qdio.in_q)
2535                 goto out_nomem;
2536
2537         /* inbound buffer pool */
2538         if (qeth_alloc_buffer_pool(card))
2539                 goto out_freeinq;
2540
2541         /* outbound */
2542         card->qdio.out_qs =
2543                 kzalloc(card->qdio.no_out_queues *
2544                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2545         if (!card->qdio.out_qs)
2546                 goto out_freepool;
2547         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2548                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2549                 if (!card->qdio.out_qs[i])
2550                         goto out_freeoutq;
2551                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2552                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2553                 card->qdio.out_qs[i]->queue_no = i;
2554                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2555                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2556                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2557                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2558                                 goto out_freeoutqbufs;
2559                 }
2560         }
2561
2562         /* completion */
2563         if (qeth_alloc_cq(card))
2564                 goto out_freeoutq;
2565
2566         return 0;
2567
2568 out_freeoutqbufs:
2569         while (j > 0) {
2570                 --j;
2571                 kmem_cache_free(qeth_qdio_outbuf_cache,
2572                                 card->qdio.out_qs[i]->bufs[j]);
2573                 card->qdio.out_qs[i]->bufs[j] = NULL;
2574         }
2575 out_freeoutq:
2576         while (i > 0) {
2577                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2578                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2579         }
2580         kfree(card->qdio.out_qs);
2581         card->qdio.out_qs = NULL;
2582 out_freepool:
2583         qeth_free_buffer_pool(card);
2584 out_freeinq:
2585         qeth_free_qdio_queue(card->qdio.in_q);
2586         card->qdio.in_q = NULL;
2587 out_nomem:
2588         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2589         return -ENOMEM;
2590 }
2591
2592 static void qeth_free_qdio_buffers(struct qeth_card *card)
2593 {
2594         int i, j;
2595
2596         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2597                 QETH_QDIO_UNINITIALIZED)
2598                 return;
2599
2600         qeth_free_cq(card);
2601         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2602         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2603                 if (card->qdio.in_q->bufs[j].rx_skb)
2604                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2605         }
2606         qeth_free_qdio_queue(card->qdio.in_q);
2607         card->qdio.in_q = NULL;
2608         /* inbound buffer pool */
2609         qeth_free_buffer_pool(card);
2610         /* free outbound qdio_qs */
2611         if (card->qdio.out_qs) {
2612                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2613                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2614                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2615                 }
2616                 kfree(card->qdio.out_qs);
2617                 card->qdio.out_qs = NULL;
2618         }
2619 }
2620
2621 static void qeth_create_qib_param_field(struct qeth_card *card,
2622                 char *param_field)
2623 {
2624
2625         param_field[0] = _ascebc['P'];
2626         param_field[1] = _ascebc['C'];
2627         param_field[2] = _ascebc['I'];
2628         param_field[3] = _ascebc['T'];
2629         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2630         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2631         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2632 }
2633
2634 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2635                 char *param_field)
2636 {
2637         param_field[16] = _ascebc['B'];
2638         param_field[17] = _ascebc['L'];
2639         param_field[18] = _ascebc['K'];
2640         param_field[19] = _ascebc['T'];
2641         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2642         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2643         *((unsigned int *) (&param_field[28])) =
2644                 card->info.blkt.inter_packet_jumbo;
2645 }
2646
2647 static int qeth_qdio_activate(struct qeth_card *card)
2648 {
2649         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2650         return qdio_activate(CARD_DDEV(card));
2651 }
2652
2653 static int qeth_dm_act(struct qeth_card *card)
2654 {
2655         int rc;
2656         struct qeth_cmd_buffer *iob;
2657
2658         QETH_DBF_TEXT(SETUP, 2, "dmact");
2659
2660         iob = qeth_wait_for_buffer(&card->write);
2661         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2662
2663         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2664                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2665         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2666                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2667         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2668         return rc;
2669 }
2670
2671 static int qeth_mpc_initialize(struct qeth_card *card)
2672 {
2673         int rc;
2674
2675         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2676
2677         rc = qeth_issue_next_read(card);
2678         if (rc) {
2679                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2680                 return rc;
2681         }
2682         rc = qeth_cm_enable(card);
2683         if (rc) {
2684                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2685                 goto out_qdio;
2686         }
2687         rc = qeth_cm_setup(card);
2688         if (rc) {
2689                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2690                 goto out_qdio;
2691         }
2692         rc = qeth_ulp_enable(card);
2693         if (rc) {
2694                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2695                 goto out_qdio;
2696         }
2697         rc = qeth_ulp_setup(card);
2698         if (rc) {
2699                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2700                 goto out_qdio;
2701         }
2702         rc = qeth_alloc_qdio_buffers(card);
2703         if (rc) {
2704                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2705                 goto out_qdio;
2706         }
2707         rc = qeth_qdio_establish(card);
2708         if (rc) {
2709                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2710                 qeth_free_qdio_buffers(card);
2711                 goto out_qdio;
2712         }
2713         rc = qeth_qdio_activate(card);
2714         if (rc) {
2715                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2716                 goto out_qdio;
2717         }
2718         rc = qeth_dm_act(card);
2719         if (rc) {
2720                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2721                 goto out_qdio;
2722         }
2723
2724         return 0;
2725 out_qdio:
2726         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2727         qdio_free(CARD_DDEV(card));
2728         return rc;
2729 }
2730
2731 void qeth_print_status_message(struct qeth_card *card)
2732 {
2733         switch (card->info.type) {
2734         case QETH_CARD_TYPE_OSD:
2735         case QETH_CARD_TYPE_OSM:
2736         case QETH_CARD_TYPE_OSX:
2737                 /* VM will use a non-zero first character
2738                  * to indicate a HiperSockets like reporting
2739                  * of the level OSA sets the first character to zero
2740                  * */
2741                 if (!card->info.mcl_level[0]) {
2742                         sprintf(card->info.mcl_level, "%02x%02x",
2743                                 card->info.mcl_level[2],
2744                                 card->info.mcl_level[3]);
2745                         break;
2746                 }
2747                 /* fallthrough */
2748         case QETH_CARD_TYPE_IQD:
2749                 if ((card->info.guestlan) ||
2750                     (card->info.mcl_level[0] & 0x80)) {
2751                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2752                                 card->info.mcl_level[0]];
2753                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2754                                 card->info.mcl_level[1]];
2755                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2756                                 card->info.mcl_level[2]];
2757                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2758                                 card->info.mcl_level[3]];
2759                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2760                 }
2761                 break;
2762         default:
2763                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2764         }
2765         dev_info(&card->gdev->dev,
2766                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2767                  qeth_get_cardname(card),
2768                  (card->info.mcl_level[0]) ? " (level: " : "",
2769                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2770                  (card->info.mcl_level[0]) ? ")" : "",
2771                  qeth_get_cardname_short(card));
2772 }
2773 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2774
2775 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2776 {
2777         struct qeth_buffer_pool_entry *entry;
2778
2779         QETH_CARD_TEXT(card, 5, "inwrklst");
2780
2781         list_for_each_entry(entry,
2782                             &card->qdio.init_pool.entry_list, init_list) {
2783                 qeth_put_buffer_pool_entry(card, entry);
2784         }
2785 }
2786
2787 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2788                                         struct qeth_card *card)
2789 {
2790         struct list_head *plh;
2791         struct qeth_buffer_pool_entry *entry;
2792         int i, free;
2793         struct page *page;
2794
2795         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2796                 return NULL;
2797
2798         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2799                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2800                 free = 1;
2801                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2802                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2803                                 free = 0;
2804                                 break;
2805                         }
2806                 }
2807                 if (free) {
2808                         list_del_init(&entry->list);
2809                         return entry;
2810                 }
2811         }
2812
2813         /* no free buffer in pool so take first one and swap pages */
2814         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2815                         struct qeth_buffer_pool_entry, list);
2816         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2817                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2818                         page = alloc_page(GFP_ATOMIC);
2819                         if (!page) {
2820                                 return NULL;
2821                         } else {
2822                                 free_page((unsigned long)entry->elements[i]);
2823                                 entry->elements[i] = page_address(page);
2824                                 if (card->options.performance_stats)
2825                                         card->perf_stats.sg_alloc_page_rx++;
2826                         }
2827                 }
2828         }
2829         list_del_init(&entry->list);
2830         return entry;
2831 }
2832
2833 static int qeth_init_input_buffer(struct qeth_card *card,
2834                 struct qeth_qdio_buffer *buf)
2835 {
2836         struct qeth_buffer_pool_entry *pool_entry;
2837         int i;
2838
2839         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2840                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2841                 if (!buf->rx_skb)
2842                         return 1;
2843         }
2844
2845         pool_entry = qeth_find_free_buffer_pool_entry(card);
2846         if (!pool_entry)
2847                 return 1;
2848
2849         /*
2850          * since the buffer is accessed only from the input_tasklet
2851          * there shouldn't be a need to synchronize; also, since we use
2852          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2853          * buffers
2854          */
2855
2856         buf->pool_entry = pool_entry;
2857         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2858                 buf->buffer->element[i].length = PAGE_SIZE;
2859                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2860                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2861                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2862                 else
2863                         buf->buffer->element[i].eflags = 0;
2864                 buf->buffer->element[i].sflags = 0;
2865         }
2866         return 0;
2867 }
2868
2869 int qeth_init_qdio_queues(struct qeth_card *card)
2870 {
2871         int i, j;
2872         int rc;
2873
2874         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2875
2876         /* inbound queue */
2877         qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2878                            QDIO_MAX_BUFFERS_PER_Q);
2879         qeth_initialize_working_pool_list(card);
2880         /*give only as many buffers to hardware as we have buffer pool entries*/
2881         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2882                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2883         card->qdio.in_q->next_buf_to_init =
2884                 card->qdio.in_buf_pool.buf_count - 1;
2885         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2886                      card->qdio.in_buf_pool.buf_count - 1);
2887         if (rc) {
2888                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2889                 return rc;
2890         }
2891
2892         /* completion */
2893         rc = qeth_cq_init(card);
2894         if (rc) {
2895                 return rc;
2896         }
2897
2898         /* outbound queue */
2899         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2900                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2901                                    QDIO_MAX_BUFFERS_PER_Q);
2902                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2903                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2904                                         card->qdio.out_qs[i]->bufs[j],
2905                                         QETH_QDIO_BUF_EMPTY);
2906                 }
2907                 card->qdio.out_qs[i]->card = card;
2908                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2909                 card->qdio.out_qs[i]->do_pack = 0;
2910                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2911                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2912                 atomic_set(&card->qdio.out_qs[i]->state,
2913                            QETH_OUT_Q_UNLOCKED);
2914         }
2915         return 0;
2916 }
2917 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2918
2919 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2920 {
2921         switch (link_type) {
2922         case QETH_LINK_TYPE_HSTR:
2923                 return 2;
2924         default:
2925                 return 1;
2926         }
2927 }
2928
2929 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2930                 struct qeth_ipa_cmd *cmd, __u8 command,
2931                 enum qeth_prot_versions prot)
2932 {
2933         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2934         cmd->hdr.command = command;
2935         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2936         cmd->hdr.seqno = card->seqno.ipa;
2937         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2938         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2939         if (card->options.layer2)
2940                 cmd->hdr.prim_version_no = 2;
2941         else
2942                 cmd->hdr.prim_version_no = 1;
2943         cmd->hdr.param_count = 1;
2944         cmd->hdr.prot_version = prot;
2945         cmd->hdr.ipa_supported = 0;
2946         cmd->hdr.ipa_enabled = 0;
2947 }
2948
2949 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2950                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2951 {
2952         struct qeth_cmd_buffer *iob;
2953         struct qeth_ipa_cmd *cmd;
2954
2955         iob = qeth_get_buffer(&card->write);
2956         if (iob) {
2957                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2958                 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2959         } else {
2960                 dev_warn(&card->gdev->dev,
2961                          "The qeth driver ran out of channel command buffers\n");
2962                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2963                                  dev_name(&card->gdev->dev));
2964         }
2965
2966         return iob;
2967 }
2968 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2969
2970 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2971                 char prot_type)
2972 {
2973         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2974         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2975         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2976                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2977 }
2978 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2979
2980 /**
2981  * qeth_send_ipa_cmd() - send an IPA command
2982  *
2983  * See qeth_send_control_data() for explanation of the arguments.
2984  */
2985
2986 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2987                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2988                         unsigned long),
2989                 void *reply_param)
2990 {
2991         int rc;
2992         char prot_type;
2993
2994         QETH_CARD_TEXT(card, 4, "sendipa");
2995
2996         if (card->options.layer2)
2997                 if (card->info.type == QETH_CARD_TYPE_OSN)
2998                         prot_type = QETH_PROT_OSN2;
2999                 else
3000                         prot_type = QETH_PROT_LAYER2;
3001         else
3002                 prot_type = QETH_PROT_TCPIP;
3003         qeth_prepare_ipa_cmd(card, iob, prot_type);
3004         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
3005                                                 iob, reply_cb, reply_param);
3006         if (rc == -ETIME) {
3007                 qeth_clear_ipacmd_list(card);
3008                 qeth_schedule_recovery(card);
3009         }
3010         return rc;
3011 }
3012 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3013
3014 static int qeth_send_startlan(struct qeth_card *card)
3015 {
3016         int rc;
3017         struct qeth_cmd_buffer *iob;
3018
3019         QETH_DBF_TEXT(SETUP, 2, "strtlan");
3020
3021         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
3022         if (!iob)
3023                 return -ENOMEM;
3024         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
3025         return rc;
3026 }
3027
3028 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
3029                 struct qeth_reply *reply, unsigned long data)
3030 {
3031         struct qeth_ipa_cmd *cmd;
3032
3033         QETH_CARD_TEXT(card, 4, "defadpcb");
3034
3035         cmd = (struct qeth_ipa_cmd *) data;
3036         if (cmd->hdr.return_code == 0)
3037                 cmd->hdr.return_code =
3038                         cmd->data.setadapterparms.hdr.return_code;
3039         return 0;
3040 }
3041
3042 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3043                 struct qeth_reply *reply, unsigned long data)
3044 {
3045         struct qeth_ipa_cmd *cmd;
3046
3047         QETH_CARD_TEXT(card, 3, "quyadpcb");
3048
3049         cmd = (struct qeth_ipa_cmd *) data;
3050         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3051                 card->info.link_type =
3052                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3053                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3054         }
3055         card->options.adp.supported_funcs =
3056                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3057         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3058 }
3059
3060 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3061                 __u32 command, __u32 cmdlen)
3062 {
3063         struct qeth_cmd_buffer *iob;
3064         struct qeth_ipa_cmd *cmd;
3065
3066         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3067                                      QETH_PROT_IPV4);
3068         if (iob) {
3069                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3070                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3071                 cmd->data.setadapterparms.hdr.command_code = command;
3072                 cmd->data.setadapterparms.hdr.used_total = 1;
3073                 cmd->data.setadapterparms.hdr.seq_no = 1;
3074         }
3075
3076         return iob;
3077 }
3078
3079 int qeth_query_setadapterparms(struct qeth_card *card)
3080 {
3081         int rc;
3082         struct qeth_cmd_buffer *iob;
3083
3084         QETH_CARD_TEXT(card, 3, "queryadp");
3085         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3086                                    sizeof(struct qeth_ipacmd_setadpparms));
3087         if (!iob)
3088                 return -ENOMEM;
3089         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3090         return rc;
3091 }
3092 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3093
3094 static int qeth_query_ipassists_cb(struct qeth_card *card,
3095                 struct qeth_reply *reply, unsigned long data)
3096 {
3097         struct qeth_ipa_cmd *cmd;
3098
3099         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3100
3101         cmd = (struct qeth_ipa_cmd *) data;
3102
3103         switch (cmd->hdr.return_code) {
3104         case IPA_RC_NOTSUPP:
3105         case IPA_RC_L2_UNSUPPORTED_CMD:
3106                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3107                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3108                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3109                 return -0;
3110         default:
3111                 if (cmd->hdr.return_code) {
3112                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3113                                                 "rc=%d\n",
3114                                                 dev_name(&card->gdev->dev),
3115                                                 cmd->hdr.return_code);
3116                         return 0;
3117                 }
3118         }
3119
3120         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3121                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3122                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3123         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3124                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3125                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3126         } else
3127                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3128                                         "\n", dev_name(&card->gdev->dev));
3129         return 0;
3130 }
3131
3132 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3133 {
3134         int rc;
3135         struct qeth_cmd_buffer *iob;
3136
3137         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3138         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3139         if (!iob)
3140                 return -ENOMEM;
3141         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3142         return rc;
3143 }
3144 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3145
3146 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3147                                 struct qeth_reply *reply, unsigned long data)
3148 {
3149         struct qeth_ipa_cmd *cmd;
3150         struct qeth_switch_info *sw_info;
3151         struct qeth_query_switch_attributes *attrs;
3152
3153         QETH_CARD_TEXT(card, 2, "qswiatcb");
3154         cmd = (struct qeth_ipa_cmd *) data;
3155         sw_info = (struct qeth_switch_info *)reply->param;
3156         if (cmd->data.setadapterparms.hdr.return_code == 0) {
3157                 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3158                 sw_info->capabilities = attrs->capabilities;
3159                 sw_info->settings = attrs->settings;
3160                 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3161                                                         sw_info->settings);
3162         }
3163         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3164
3165         return 0;
3166 }
3167
3168 int qeth_query_switch_attributes(struct qeth_card *card,
3169                                  struct qeth_switch_info *sw_info)
3170 {
3171         struct qeth_cmd_buffer *iob;
3172
3173         QETH_CARD_TEXT(card, 2, "qswiattr");
3174         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3175                 return -EOPNOTSUPP;
3176         if (!netif_carrier_ok(card->dev))
3177                 return -ENOMEDIUM;
3178         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3179                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3180         if (!iob)
3181                 return -ENOMEM;
3182         return qeth_send_ipa_cmd(card, iob,
3183                                 qeth_query_switch_attributes_cb, sw_info);
3184 }
3185 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3186
3187 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3188                 struct qeth_reply *reply, unsigned long data)
3189 {
3190         struct qeth_ipa_cmd *cmd;
3191         __u16 rc;
3192
3193         cmd = (struct qeth_ipa_cmd *)data;
3194         rc = cmd->hdr.return_code;
3195         if (rc)
3196                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3197         else
3198                 card->info.diagass_support = cmd->data.diagass.ext;
3199         return 0;
3200 }
3201
3202 static int qeth_query_setdiagass(struct qeth_card *card)
3203 {
3204         struct qeth_cmd_buffer *iob;
3205         struct qeth_ipa_cmd    *cmd;
3206
3207         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3208         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3209         if (!iob)
3210                 return -ENOMEM;
3211         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3212         cmd->data.diagass.subcmd_len = 16;
3213         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3214         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3215 }
3216
3217 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3218 {
3219         unsigned long info = get_zeroed_page(GFP_KERNEL);
3220         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3221         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3222         struct ccw_dev_id ccwid;
3223         int level;
3224
3225         tid->chpid = card->info.chpid;
3226         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3227         tid->ssid = ccwid.ssid;
3228         tid->devno = ccwid.devno;
3229         if (!info)
3230                 return;
3231         level = stsi(NULL, 0, 0, 0);
3232         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3233                 tid->lparnr = info222->lpar_number;
3234         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3235                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3236                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3237         }
3238         free_page(info);
3239         return;
3240 }
3241
3242 static int qeth_hw_trap_cb(struct qeth_card *card,
3243                 struct qeth_reply *reply, unsigned long data)
3244 {
3245         struct qeth_ipa_cmd *cmd;
3246         __u16 rc;
3247
3248         cmd = (struct qeth_ipa_cmd *)data;
3249         rc = cmd->hdr.return_code;
3250         if (rc)
3251                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3252         return 0;
3253 }
3254
3255 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3256 {
3257         struct qeth_cmd_buffer *iob;
3258         struct qeth_ipa_cmd *cmd;
3259
3260         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3261         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3262         if (!iob)
3263                 return -ENOMEM;
3264         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3265         cmd->data.diagass.subcmd_len = 80;
3266         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3267         cmd->data.diagass.type = 1;
3268         cmd->data.diagass.action = action;
3269         switch (action) {
3270         case QETH_DIAGS_TRAP_ARM:
3271                 cmd->data.diagass.options = 0x0003;
3272                 cmd->data.diagass.ext = 0x00010000 +
3273                         sizeof(struct qeth_trap_id);
3274                 qeth_get_trap_id(card,
3275                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3276                 break;
3277         case QETH_DIAGS_TRAP_DISARM:
3278                 cmd->data.diagass.options = 0x0001;
3279                 break;
3280         case QETH_DIAGS_TRAP_CAPTURE:
3281                 break;
3282         }
3283         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3284 }
3285 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3286
3287 static int qeth_check_qdio_errors(struct qeth_card *card,
3288                                   struct qdio_buffer *buf,
3289                                   unsigned int qdio_error,
3290                                   const char *dbftext)
3291 {
3292         if (qdio_error) {
3293                 QETH_CARD_TEXT(card, 2, dbftext);
3294                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3295                                buf->element[15].sflags);
3296                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3297                                buf->element[14].sflags);
3298                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3299                 if ((buf->element[15].sflags) == 0x12) {
3300                         card->stats.rx_dropped++;
3301                         return 0;
3302                 } else
3303                         return 1;
3304         }
3305         return 0;
3306 }
3307
3308 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3309 {
3310         struct qeth_qdio_q *queue = card->qdio.in_q;
3311         struct list_head *lh;
3312         int count;
3313         int i;
3314         int rc;
3315         int newcount = 0;
3316
3317         count = (index < queue->next_buf_to_init)?
3318                 card->qdio.in_buf_pool.buf_count -
3319                 (queue->next_buf_to_init - index) :
3320                 card->qdio.in_buf_pool.buf_count -
3321                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3322         /* only requeue at a certain threshold to avoid SIGAs */
3323         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3324                 for (i = queue->next_buf_to_init;
3325                      i < queue->next_buf_to_init + count; ++i) {
3326                         if (qeth_init_input_buffer(card,
3327                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3328                                 break;
3329                         } else {
3330                                 newcount++;
3331                         }
3332                 }
3333
3334                 if (newcount < count) {
3335                         /* we are in memory shortage so we switch back to
3336                            traditional skb allocation and drop packages */
3337                         atomic_set(&card->force_alloc_skb, 3);
3338                         count = newcount;
3339                 } else {
3340                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3341                 }
3342
3343                 if (!count) {
3344                         i = 0;
3345                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3346                                 i++;
3347                         if (i == card->qdio.in_buf_pool.buf_count) {
3348                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3349                                 card->reclaim_index = index;
3350                                 schedule_delayed_work(
3351                                         &card->buffer_reclaim_work,
3352                                         QETH_RECLAIM_WORK_TIME);
3353                         }
3354                         return;
3355                 }
3356
3357                 /*
3358                  * according to old code it should be avoided to requeue all
3359                  * 128 buffers in order to benefit from PCI avoidance.
3360                  * this function keeps at least one buffer (the buffer at
3361                  * 'index') un-requeued -> this buffer is the first buffer that
3362                  * will be requeued the next time
3363                  */
3364                 if (card->options.performance_stats) {
3365                         card->perf_stats.inbound_do_qdio_cnt++;
3366                         card->perf_stats.inbound_do_qdio_start_time =
3367                                 qeth_get_micros();
3368                 }
3369                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3370                              queue->next_buf_to_init, count);
3371                 if (card->options.performance_stats)
3372                         card->perf_stats.inbound_do_qdio_time +=
3373                                 qeth_get_micros() -
3374                                 card->perf_stats.inbound_do_qdio_start_time;
3375                 if (rc) {
3376                         QETH_CARD_TEXT(card, 2, "qinberr");
3377                 }
3378                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3379                                           QDIO_MAX_BUFFERS_PER_Q;
3380         }
3381 }
3382
3383 static void qeth_buffer_reclaim_work(struct work_struct *work)
3384 {
3385         struct qeth_card *card = container_of(work, struct qeth_card,
3386                 buffer_reclaim_work.work);
3387
3388         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3389         qeth_queue_input_buffer(card, card->reclaim_index);
3390 }
3391
3392 static void qeth_handle_send_error(struct qeth_card *card,
3393                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3394 {
3395         int sbalf15 = buffer->buffer->element[15].sflags;
3396
3397         QETH_CARD_TEXT(card, 6, "hdsnderr");
3398         if (card->info.type == QETH_CARD_TYPE_IQD) {
3399                 if (sbalf15 == 0) {
3400                         qdio_err = 0;
3401                 } else {
3402                         qdio_err = 1;
3403                 }
3404         }
3405         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3406
3407         if (!qdio_err)
3408                 return;
3409
3410         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3411                 return;
3412
3413         QETH_CARD_TEXT(card, 1, "lnkfail");
3414         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3415                        (u16)qdio_err, (u8)sbalf15);
3416 }
3417
3418 /**
3419  * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3420  * @queue: queue to check for packing buffer
3421  *
3422  * Returns number of buffers that were prepared for flush.
3423  */
3424 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3425 {
3426         struct qeth_qdio_out_buffer *buffer;
3427
3428         buffer = queue->bufs[queue->next_buf_to_fill];
3429         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3430             (buffer->next_element_to_fill > 0)) {
3431                 /* it's a packing buffer */
3432                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3433                 queue->next_buf_to_fill =
3434                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3435                 return 1;
3436         }
3437         return 0;
3438 }
3439
3440 /*
3441  * Switched to packing state if the number of used buffers on a queue
3442  * reaches a certain limit.
3443  */
3444 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3445 {
3446         if (!queue->do_pack) {
3447                 if (atomic_read(&queue->used_buffers)
3448                     >= QETH_HIGH_WATERMARK_PACK){
3449                         /* switch non-PACKING -> PACKING */
3450                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3451                         if (queue->card->options.performance_stats)
3452                                 queue->card->perf_stats.sc_dp_p++;
3453                         queue->do_pack = 1;
3454                 }
3455         }
3456 }
3457
3458 /*
3459  * Switches from packing to non-packing mode. If there is a packing
3460  * buffer on the queue this buffer will be prepared to be flushed.
3461  * In that case 1 is returned to inform the caller. If no buffer
3462  * has to be flushed, zero is returned.
3463  */
3464 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3465 {
3466         if (queue->do_pack) {
3467                 if (atomic_read(&queue->used_buffers)
3468                     <= QETH_LOW_WATERMARK_PACK) {
3469                         /* switch PACKING -> non-PACKING */
3470                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3471                         if (queue->card->options.performance_stats)
3472                                 queue->card->perf_stats.sc_p_dp++;
3473                         queue->do_pack = 0;
3474                         return qeth_prep_flush_pack_buffer(queue);
3475                 }
3476         }
3477         return 0;
3478 }
3479
3480 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3481                                int count)
3482 {
3483         struct qeth_qdio_out_buffer *buf;
3484         int rc;
3485         int i;
3486         unsigned int qdio_flags;
3487
3488         for (i = index; i < index + count; ++i) {
3489                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3490                 buf = queue->bufs[bidx];
3491                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3492                                 SBAL_EFLAGS_LAST_ENTRY;
3493
3494                 if (queue->bufstates)
3495                         queue->bufstates[bidx].user = buf;
3496
3497                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3498                         continue;
3499
3500                 if (!queue->do_pack) {
3501                         if ((atomic_read(&queue->used_buffers) >=
3502                                 (QETH_HIGH_WATERMARK_PACK -
3503                                  QETH_WATERMARK_PACK_FUZZ)) &&
3504                             !atomic_read(&queue->set_pci_flags_count)) {
3505                                 /* it's likely that we'll go to packing
3506                                  * mode soon */
3507                                 atomic_inc(&queue->set_pci_flags_count);
3508                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3509                         }
3510                 } else {
3511                         if (!atomic_read(&queue->set_pci_flags_count)) {
3512                                 /*
3513                                  * there's no outstanding PCI any more, so we
3514                                  * have to request a PCI to be sure the the PCI
3515                                  * will wake at some time in the future then we
3516                                  * can flush packed buffers that might still be
3517                                  * hanging around, which can happen if no
3518                                  * further send was requested by the stack
3519                                  */
3520                                 atomic_inc(&queue->set_pci_flags_count);
3521                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3522                         }
3523                 }
3524         }
3525
3526         netif_trans_update(queue->card->dev);
3527         if (queue->card->options.performance_stats) {
3528                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3529                 queue->card->perf_stats.outbound_do_qdio_start_time =
3530                         qeth_get_micros();
3531         }
3532         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3533         if (atomic_read(&queue->set_pci_flags_count))
3534                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3535         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3536                      queue->queue_no, index, count);
3537         if (queue->card->options.performance_stats)
3538                 queue->card->perf_stats.outbound_do_qdio_time +=
3539                         qeth_get_micros() -
3540                         queue->card->perf_stats.outbound_do_qdio_start_time;
3541         atomic_add(count, &queue->used_buffers);
3542         if (rc) {
3543                 queue->card->stats.tx_errors += count;
3544                 /* ignore temporary SIGA errors without busy condition */
3545                 if (rc == -ENOBUFS)
3546                         return;
3547                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3548                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3549                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3550                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3551                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3552
3553                 /* this must not happen under normal circumstances. if it
3554                  * happens something is really wrong -> recover */
3555                 qeth_schedule_recovery(queue->card);
3556                 return;
3557         }
3558         if (queue->card->options.performance_stats)
3559                 queue->card->perf_stats.bufs_sent += count;
3560 }
3561
3562 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3563 {
3564         int index;
3565         int flush_cnt = 0;
3566         int q_was_packing = 0;
3567
3568         /*
3569          * check if weed have to switch to non-packing mode or if
3570          * we have to get a pci flag out on the queue
3571          */
3572         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3573             !atomic_read(&queue->set_pci_flags_count)) {
3574                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3575                                 QETH_OUT_Q_UNLOCKED) {
3576                         /*
3577                          * If we get in here, there was no action in
3578                          * do_send_packet. So, we check if there is a
3579                          * packing buffer to be flushed here.
3580                          */
3581                         netif_stop_queue(queue->card->dev);
3582                         index = queue->next_buf_to_fill;
3583                         q_was_packing = queue->do_pack;
3584                         /* queue->do_pack may change */
3585                         barrier();
3586                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3587                         if (!flush_cnt &&
3588                             !atomic_read(&queue->set_pci_flags_count))
3589                                 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3590                         if (queue->card->options.performance_stats &&
3591                             q_was_packing)
3592                                 queue->card->perf_stats.bufs_sent_pack +=
3593                                         flush_cnt;
3594                         if (flush_cnt)
3595                                 qeth_flush_buffers(queue, index, flush_cnt);
3596                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3597                 }
3598         }
3599 }
3600
3601 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3602                 unsigned long card_ptr)
3603 {
3604         struct qeth_card *card = (struct qeth_card *)card_ptr;
3605
3606         if (card->dev && (card->dev->flags & IFF_UP))
3607                 napi_schedule(&card->napi);
3608 }
3609 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3610
3611 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3612 {
3613         int rc;
3614
3615         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3616                 rc = -1;
3617                 goto out;
3618         } else {
3619                 if (card->options.cq == cq) {
3620                         rc = 0;
3621                         goto out;
3622                 }
3623
3624                 if (card->state != CARD_STATE_DOWN &&
3625                     card->state != CARD_STATE_RECOVER) {
3626                         rc = -1;
3627                         goto out;
3628                 }
3629
3630                 qeth_free_qdio_buffers(card);
3631                 card->options.cq = cq;
3632                 rc = 0;
3633         }
3634 out:
3635         return rc;
3636
3637 }
3638 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3639
3640
3641 static void qeth_qdio_cq_handler(struct qeth_card *card,
3642                 unsigned int qdio_err,
3643                 unsigned int queue, int first_element, int count) {
3644         struct qeth_qdio_q *cq = card->qdio.c_q;
3645         int i;
3646         int rc;
3647
3648         if (!qeth_is_cq(card, queue))
3649                 goto out;
3650
3651         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3652         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3653         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3654
3655         if (qdio_err) {
3656                 netif_stop_queue(card->dev);
3657                 qeth_schedule_recovery(card);
3658                 goto out;
3659         }
3660
3661         if (card->options.performance_stats) {
3662                 card->perf_stats.cq_cnt++;
3663                 card->perf_stats.cq_start_time = qeth_get_micros();
3664         }
3665
3666         for (i = first_element; i < first_element + count; ++i) {
3667                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3668                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3669                 int e;
3670
3671                 e = 0;
3672                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3673                        buffer->element[e].addr) {
3674                         unsigned long phys_aob_addr;
3675
3676                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3677                         qeth_qdio_handle_aob(card, phys_aob_addr);
3678                         buffer->element[e].addr = NULL;
3679                         buffer->element[e].eflags = 0;
3680                         buffer->element[e].sflags = 0;
3681                         buffer->element[e].length = 0;
3682
3683                         ++e;
3684                 }
3685
3686                 buffer->element[15].eflags = 0;
3687                 buffer->element[15].sflags = 0;
3688         }
3689         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3690                     card->qdio.c_q->next_buf_to_init,
3691                     count);
3692         if (rc) {
3693                 dev_warn(&card->gdev->dev,
3694                         "QDIO reported an error, rc=%i\n", rc);
3695                 QETH_CARD_TEXT(card, 2, "qcqherr");
3696         }
3697         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3698                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3699
3700         netif_wake_queue(card->dev);
3701
3702         if (card->options.performance_stats) {
3703                 int delta_t = qeth_get_micros();
3704                 delta_t -= card->perf_stats.cq_start_time;
3705                 card->perf_stats.cq_time += delta_t;
3706         }
3707 out:
3708         return;
3709 }
3710
3711 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3712                 unsigned int queue, int first_elem, int count,
3713                 unsigned long card_ptr)
3714 {
3715         struct qeth_card *card = (struct qeth_card *)card_ptr;
3716
3717         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3718         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3719
3720         if (qeth_is_cq(card, queue))
3721                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3722         else if (qdio_err)
3723                 qeth_schedule_recovery(card);
3724
3725
3726 }
3727 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3728
3729 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3730                 unsigned int qdio_error, int __queue, int first_element,
3731                 int count, unsigned long card_ptr)
3732 {
3733         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3734         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3735         struct qeth_qdio_out_buffer *buffer;
3736         int i;
3737
3738         QETH_CARD_TEXT(card, 6, "qdouhdl");
3739         if (qdio_error & QDIO_ERROR_FATAL) {
3740                 QETH_CARD_TEXT(card, 2, "achkcond");
3741                 netif_stop_queue(card->dev);
3742                 qeth_schedule_recovery(card);
3743                 return;
3744         }
3745         if (card->options.performance_stats) {
3746                 card->perf_stats.outbound_handler_cnt++;
3747                 card->perf_stats.outbound_handler_start_time =
3748                         qeth_get_micros();
3749         }
3750         for (i = first_element; i < (first_element + count); ++i) {
3751                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3752                 buffer = queue->bufs[bidx];
3753                 qeth_handle_send_error(card, buffer, qdio_error);
3754
3755                 if (queue->bufstates &&
3756                     (queue->bufstates[bidx].flags &
3757                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3758                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3759
3760                         if (atomic_cmpxchg(&buffer->state,
3761                                            QETH_QDIO_BUF_PRIMED,
3762                                            QETH_QDIO_BUF_PENDING) ==
3763                                 QETH_QDIO_BUF_PRIMED) {
3764                                 qeth_notify_skbs(queue, buffer,
3765                                                  TX_NOTIFY_PENDING);
3766                         }
3767                         buffer->aob = queue->bufstates[bidx].aob;
3768                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3769                         QETH_CARD_TEXT(queue->card, 5, "aob");
3770                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3771                                         virt_to_phys(buffer->aob));
3772                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3773                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3774                                 qeth_schedule_recovery(card);
3775                         }
3776                 } else {
3777                         if (card->options.cq == QETH_CQ_ENABLED) {
3778                                 enum iucv_tx_notify n;
3779
3780                                 n = qeth_compute_cq_notification(
3781                                         buffer->buffer->element[15].sflags, 0);
3782                                 qeth_notify_skbs(queue, buffer, n);
3783                         }
3784
3785                         qeth_clear_output_buffer(queue, buffer,
3786                                                 QETH_QDIO_BUF_EMPTY);
3787                 }
3788                 qeth_cleanup_handled_pending(queue, bidx, 0);
3789         }
3790         atomic_sub(count, &queue->used_buffers);
3791         /* check if we need to do something on this outbound queue */
3792         if (card->info.type != QETH_CARD_TYPE_IQD)
3793                 qeth_check_outbound_queue(queue);
3794
3795         netif_wake_queue(queue->card->dev);
3796         if (card->options.performance_stats)
3797                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3798                         card->perf_stats.outbound_handler_start_time;
3799 }
3800 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3801
3802 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3803 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3804 {
3805         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3806                 return 2;
3807         return queue_num;
3808 }
3809
3810 /**
3811  * Note: Function assumes that we have 4 outbound queues.
3812  */
3813 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3814                         int ipv, int cast_type)
3815 {
3816         __be16 *tci;
3817         u8 tos;
3818
3819         if (cast_type && card->info.is_multicast_different)
3820                 return card->info.is_multicast_different &
3821                         (card->qdio.no_out_queues - 1);
3822
3823         switch (card->qdio.do_prio_queueing) {
3824         case QETH_PRIO_Q_ING_TOS:
3825         case QETH_PRIO_Q_ING_PREC:
3826                 switch (ipv) {
3827                 case 4:
3828                         tos = ipv4_get_dsfield(ip_hdr(skb));
3829                         break;
3830                 case 6:
3831                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3832                         break;
3833                 default:
3834                         return card->qdio.default_out_queue;
3835                 }
3836                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3837                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3838                 if (tos & IPTOS_MINCOST)
3839                         return qeth_cut_iqd_prio(card, 3);
3840                 if (tos & IPTOS_RELIABILITY)
3841                         return 2;
3842                 if (tos & IPTOS_THROUGHPUT)
3843                         return 1;
3844                 if (tos & IPTOS_LOWDELAY)
3845                         return 0;
3846                 break;
3847         case QETH_PRIO_Q_ING_SKB:
3848                 if (skb->priority > 5)
3849                         return 0;
3850                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3851         case QETH_PRIO_Q_ING_VLAN:
3852                 tci = &((struct ethhdr *)skb->data)->h_proto;
3853                 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3854                         return qeth_cut_iqd_prio(card,
3855                         ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3856                 break;
3857         default:
3858                 break;
3859         }
3860         return card->qdio.default_out_queue;
3861 }
3862 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3863
3864 /**
3865  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3866  * @skb:                                SKB address
3867  *
3868  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3869  * fragmented part of the SKB. Returns zero for linear SKB.
3870  */
3871 int qeth_get_elements_for_frags(struct sk_buff *skb)
3872 {
3873         int cnt, elements = 0;
3874
3875         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3876                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3877
3878                 elements += qeth_get_elements_for_range(
3879                         (addr_t)skb_frag_address(frag),
3880                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3881         }
3882         return elements;
3883 }
3884 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3885
3886 /**
3887  * qeth_get_elements_no() -     find number of SBALEs for skb data, inc. frags.
3888  * @card:                       qeth card structure, to check max. elems.
3889  * @skb:                        SKB address
3890  * @extra_elems:                extra elems needed, to check against max.
3891  * @data_offset:                range starts at skb->data + data_offset
3892  *
3893  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3894  * skb data, including linear part and fragments. Checks if the result plus
3895  * extra_elems fits under the limit for the card. Returns 0 if it does not.
3896  * Note: extra_elems is not included in the returned result.
3897  */
3898 int qeth_get_elements_no(struct qeth_card *card,
3899                      struct sk_buff *skb, int extra_elems, int data_offset)
3900 {
3901         int elements = qeth_get_elements_for_range(
3902                                 (addr_t)skb->data + data_offset,
3903                                 (addr_t)skb->data + skb_headlen(skb)) +
3904                         qeth_get_elements_for_frags(skb);
3905
3906         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3907                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3908                         "(Number=%d / Length=%d). Discarded.\n",
3909                         elements + extra_elems, skb->len);
3910                 return 0;
3911         }
3912         return elements;
3913 }
3914 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3915
3916 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3917 {
3918         int hroom, inpage, rest;
3919
3920         if (((unsigned long)skb->data & PAGE_MASK) !=
3921             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3922                 hroom = skb_headroom(skb);
3923                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3924                 rest = len - inpage;
3925                 if (rest > hroom)
3926                         return 1;
3927                 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3928                 skb->data -= rest;
3929                 skb->tail -= rest;
3930                 *hdr = (struct qeth_hdr *)skb->data;
3931                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3932         }
3933         return 0;
3934 }
3935 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3936
3937 /**
3938  * qeth_push_hdr() - push a qeth_hdr onto an skb.
3939  * @skb: skb that the qeth_hdr should be pushed onto.
3940  * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3941  *       it contains a valid pointer to a qeth_hdr.
3942  * @len: length of the hdr that needs to be pushed on.
3943  *
3944  * Returns the pushed length. If the header can't be pushed on
3945  * (eg. because it would cross a page boundary), it is allocated from
3946  * the cache instead and 0 is returned.
3947  * Error to create the hdr is indicated by returning with < 0.
3948  */
3949 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len)
3950 {
3951         if (skb_headroom(skb) >= len &&
3952             qeth_get_elements_for_range((addr_t)skb->data - len,
3953                                         (addr_t)skb->data) == 1) {
3954                 *hdr = skb_push(skb, len);
3955                 return len;
3956         }
3957         /* fall back */
3958         *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3959         if (!*hdr)
3960                 return -ENOMEM;
3961         return 0;
3962 }
3963 EXPORT_SYMBOL_GPL(qeth_push_hdr);
3964
3965 static void __qeth_fill_buffer(struct sk_buff *skb,
3966                                struct qeth_qdio_out_buffer *buf,
3967                                bool is_first_elem, unsigned int offset)
3968 {
3969         struct qdio_buffer *buffer = buf->buffer;
3970         int element = buf->next_element_to_fill;
3971         int length = skb_headlen(skb) - offset;
3972         char *data = skb->data + offset;
3973         int length_here, cnt;
3974
3975         /* map linear part into buffer element(s) */
3976         while (length > 0) {
3977                 /* length_here is the remaining amount of data in this page */
3978                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3979                 if (length < length_here)
3980                         length_here = length;
3981
3982                 buffer->element[element].addr = data;
3983                 buffer->element[element].length = length_here;
3984                 length -= length_here;
3985                 if (is_first_elem) {
3986                         is_first_elem = false;
3987                         if (length || skb_is_nonlinear(skb))
3988                                 /* skb needs additional elements */
3989                                 buffer->element[element].eflags =
3990                                         SBAL_EFLAGS_FIRST_FRAG;
3991                         else
3992                                 buffer->element[element].eflags = 0;
3993                 } else {
3994                         buffer->element[element].eflags =
3995                                 SBAL_EFLAGS_MIDDLE_FRAG;
3996                 }
3997                 data += length_here;
3998                 element++;
3999         }
4000
4001         /* map page frags into buffer element(s) */
4002         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4003                 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4004
4005                 data = skb_frag_address(frag);
4006                 length = skb_frag_size(frag);
4007                 while (length > 0) {
4008                         length_here = PAGE_SIZE -
4009                                 ((unsigned long) data % PAGE_SIZE);
4010                         if (length < length_here)
4011                                 length_here = length;
4012
4013                         buffer->element[element].addr = data;
4014                         buffer->element[element].length = length_here;
4015                         buffer->element[element].eflags =
4016                                 SBAL_EFLAGS_MIDDLE_FRAG;
4017                         length -= length_here;
4018                         data += length_here;
4019                         element++;
4020                 }
4021         }
4022
4023         if (buffer->element[element - 1].eflags)
4024                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4025         buf->next_element_to_fill = element;
4026 }
4027
4028 /**
4029  * qeth_fill_buffer() - map skb into an output buffer
4030  * @queue:      QDIO queue to submit the buffer on
4031  * @buf:        buffer to transport the skb
4032  * @skb:        skb to map into the buffer
4033  * @hdr:        qeth_hdr for this skb. Either at skb->data, or allocated
4034  *              from qeth_core_header_cache.
4035  * @offset:     when mapping the skb, start at skb->data + offset
4036  * @hd_len:     if > 0, build a dedicated header element of this size
4037  */
4038 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4039                             struct qeth_qdio_out_buffer *buf,
4040                             struct sk_buff *skb, struct qeth_hdr *hdr,
4041                             unsigned int offset, unsigned int hd_len)
4042 {
4043         struct qdio_buffer *buffer = buf->buffer;
4044         bool is_first_elem = true;
4045         int flush_cnt = 0;
4046
4047         refcount_inc(&skb->users);
4048         skb_queue_tail(&buf->skb_list, skb);
4049
4050         /* build dedicated header element */
4051         if (hd_len) {
4052                 int element = buf->next_element_to_fill;
4053                 is_first_elem = false;
4054
4055                 buffer->element[element].addr = hdr;
4056                 buffer->element[element].length = hd_len;
4057                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4058                 /* remember to free cache-allocated qeth_hdr: */
4059                 buf->is_header[element] = ((void *)hdr != skb->data);
4060                 buf->next_element_to_fill++;
4061         }
4062
4063         __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4064
4065         if (!queue->do_pack) {
4066                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4067                 /* set state to PRIMED -> will be flushed */
4068                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4069                 flush_cnt = 1;
4070         } else {
4071                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4072                 if (queue->card->options.performance_stats)
4073                         queue->card->perf_stats.skbs_sent_pack++;
4074                 if (buf->next_element_to_fill >=
4075                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4076                         /*
4077                          * packed buffer if full -> set state PRIMED
4078                          * -> will be flushed
4079                          */
4080                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4081                         flush_cnt = 1;
4082                 }
4083         }
4084         return flush_cnt;
4085 }
4086
4087 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4088                              struct qeth_hdr *hdr, unsigned int offset,
4089                              unsigned int hd_len)
4090 {
4091         int index = queue->next_buf_to_fill;
4092         struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4093
4094         /*
4095          * check if buffer is empty to make sure that we do not 'overtake'
4096          * ourselves and try to fill a buffer that is already primed
4097          */
4098         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4099                 return -EBUSY;
4100         queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4101         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4102         qeth_flush_buffers(queue, index, 1);
4103         return 0;
4104 }
4105 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4106
4107 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4108                         struct sk_buff *skb, struct qeth_hdr *hdr,
4109                         unsigned int offset, unsigned int hd_len,
4110                         int elements_needed)
4111 {
4112         struct qeth_qdio_out_buffer *buffer;
4113         int start_index;
4114         int flush_count = 0;
4115         int do_pack = 0;
4116         int tmp;
4117         int rc = 0;
4118
4119         /* spin until we get the queue ... */
4120         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4121                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4122         start_index = queue->next_buf_to_fill;
4123         buffer = queue->bufs[queue->next_buf_to_fill];
4124         /*
4125          * check if buffer is empty to make sure that we do not 'overtake'
4126          * ourselves and try to fill a buffer that is already primed
4127          */
4128         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4129                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4130                 return -EBUSY;
4131         }
4132         /* check if we need to switch packing state of this queue */
4133         qeth_switch_to_packing_if_needed(queue);
4134         if (queue->do_pack) {
4135                 do_pack = 1;
4136                 /* does packet fit in current buffer? */
4137                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4138                     buffer->next_element_to_fill) < elements_needed) {
4139                         /* ... no -> set state PRIMED */
4140                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4141                         flush_count++;
4142                         queue->next_buf_to_fill =
4143                                 (queue->next_buf_to_fill + 1) %
4144                                 QDIO_MAX_BUFFERS_PER_Q;
4145                         buffer = queue->bufs[queue->next_buf_to_fill];
4146                         /* we did a step forward, so check buffer state
4147                          * again */
4148                         if (atomic_read(&buffer->state) !=
4149                             QETH_QDIO_BUF_EMPTY) {
4150                                 qeth_flush_buffers(queue, start_index,
4151                                                            flush_count);
4152                                 atomic_set(&queue->state,
4153                                                 QETH_OUT_Q_UNLOCKED);
4154                                 rc = -EBUSY;
4155                                 goto out;
4156                         }
4157                 }
4158         }
4159         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4160         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4161                                   QDIO_MAX_BUFFERS_PER_Q;
4162         flush_count += tmp;
4163         if (flush_count)
4164                 qeth_flush_buffers(queue, start_index, flush_count);
4165         else if (!atomic_read(&queue->set_pci_flags_count))
4166                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4167         /*
4168          * queue->state will go from LOCKED -> UNLOCKED or from
4169          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4170          * (switch packing state or flush buffer to get another pci flag out).
4171          * In that case we will enter this loop
4172          */
4173         while (atomic_dec_return(&queue->state)) {
4174                 start_index = queue->next_buf_to_fill;
4175                 /* check if we can go back to non-packing state */
4176                 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4177                 /*
4178                  * check if we need to flush a packing buffer to get a pci
4179                  * flag out on the queue
4180                  */
4181                 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4182                         tmp = qeth_prep_flush_pack_buffer(queue);
4183                 if (tmp) {
4184                         qeth_flush_buffers(queue, start_index, tmp);
4185                         flush_count += tmp;
4186                 }
4187         }
4188 out:
4189         /* at this point the queue is UNLOCKED again */
4190         if (queue->card->options.performance_stats && do_pack)
4191                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4192
4193         return rc;
4194 }
4195 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4196
4197 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4198                 struct qeth_reply *reply, unsigned long data)
4199 {
4200         struct qeth_ipa_cmd *cmd;
4201         struct qeth_ipacmd_setadpparms *setparms;
4202
4203         QETH_CARD_TEXT(card, 4, "prmadpcb");
4204
4205         cmd = (struct qeth_ipa_cmd *) data;
4206         setparms = &(cmd->data.setadapterparms);
4207
4208         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4209         if (cmd->hdr.return_code) {
4210                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4211                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4212         }
4213         card->info.promisc_mode = setparms->data.mode;
4214         return 0;
4215 }
4216
4217 void qeth_setadp_promisc_mode(struct qeth_card *card)
4218 {
4219         enum qeth_ipa_promisc_modes mode;
4220         struct net_device *dev = card->dev;
4221         struct qeth_cmd_buffer *iob;
4222         struct qeth_ipa_cmd *cmd;
4223
4224         QETH_CARD_TEXT(card, 4, "setprom");
4225
4226         if (((dev->flags & IFF_PROMISC) &&
4227              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4228             (!(dev->flags & IFF_PROMISC) &&
4229              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4230                 return;
4231         mode = SET_PROMISC_MODE_OFF;
4232         if (dev->flags & IFF_PROMISC)
4233                 mode = SET_PROMISC_MODE_ON;
4234         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4235
4236         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4237                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4238         if (!iob)
4239                 return;
4240         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4241         cmd->data.setadapterparms.data.mode = mode;
4242         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4243 }
4244 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4245
4246 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4247 {
4248         struct qeth_card *card;
4249         char dbf_text[15];
4250
4251         card = dev->ml_priv;
4252
4253         QETH_CARD_TEXT(card, 4, "chgmtu");
4254         sprintf(dbf_text, "%8x", new_mtu);
4255         QETH_CARD_TEXT(card, 4, dbf_text);
4256
4257         if (!qeth_mtu_is_valid(card, new_mtu))
4258                 return -EINVAL;
4259         dev->mtu = new_mtu;
4260         return 0;
4261 }
4262 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4263
4264 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4265 {
4266         struct qeth_card *card;
4267
4268         card = dev->ml_priv;
4269
4270         QETH_CARD_TEXT(card, 5, "getstat");
4271
4272         return &card->stats;
4273 }
4274 EXPORT_SYMBOL_GPL(qeth_get_stats);
4275
4276 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4277                 struct qeth_reply *reply, unsigned long data)
4278 {
4279         struct qeth_ipa_cmd *cmd;
4280
4281         QETH_CARD_TEXT(card, 4, "chgmaccb");
4282
4283         cmd = (struct qeth_ipa_cmd *) data;
4284         if (!card->options.layer2 ||
4285             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4286                 ether_addr_copy(card->dev->dev_addr,
4287                                 cmd->data.setadapterparms.data.change_addr.addr);
4288                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4289         }
4290         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4291         return 0;
4292 }
4293
4294 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4295 {
4296         int rc;
4297         struct qeth_cmd_buffer *iob;
4298         struct qeth_ipa_cmd *cmd;
4299
4300         QETH_CARD_TEXT(card, 4, "chgmac");
4301
4302         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4303                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4304                                    sizeof(struct qeth_change_addr));
4305         if (!iob)
4306                 return -ENOMEM;
4307         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4308         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4309         cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4310         ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4311                         card->dev->dev_addr);
4312         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4313                                NULL);
4314         return rc;
4315 }
4316 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4317
4318 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4319                 struct qeth_reply *reply, unsigned long data)
4320 {
4321         struct qeth_ipa_cmd *cmd;
4322         struct qeth_set_access_ctrl *access_ctrl_req;
4323         int fallback = *(int *)reply->param;
4324
4325         QETH_CARD_TEXT(card, 4, "setaccb");
4326
4327         cmd = (struct qeth_ipa_cmd *) data;
4328         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4329         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4330         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4331         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4332                 cmd->data.setadapterparms.hdr.return_code);
4333         if (cmd->data.setadapterparms.hdr.return_code !=
4334                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4335                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4336                                 card->gdev->dev.kobj.name,
4337                                 access_ctrl_req->subcmd_code,
4338                                 cmd->data.setadapterparms.hdr.return_code);
4339         switch (cmd->data.setadapterparms.hdr.return_code) {
4340         case SET_ACCESS_CTRL_RC_SUCCESS:
4341                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4342                         dev_info(&card->gdev->dev,
4343                             "QDIO data connection isolation is deactivated\n");
4344                 } else {
4345                         dev_info(&card->gdev->dev,
4346                             "QDIO data connection isolation is activated\n");
4347                 }
4348                 break;
4349         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4350                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4351                                 "deactivated\n", dev_name(&card->gdev->dev));
4352                 if (fallback)
4353                         card->options.isolation = card->options.prev_isolation;
4354                 break;
4355         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4356                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4357                                 " activated\n", dev_name(&card->gdev->dev));
4358                 if (fallback)
4359                         card->options.isolation = card->options.prev_isolation;
4360                 break;
4361         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4362                 dev_err(&card->gdev->dev, "Adapter does not "
4363                         "support QDIO data connection isolation\n");
4364                 break;
4365         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4366                 dev_err(&card->gdev->dev,
4367                         "Adapter is dedicated. "
4368                         "QDIO data connection isolation not supported\n");
4369                 if (fallback)
4370                         card->options.isolation = card->options.prev_isolation;
4371                 break;
4372         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4373                 dev_err(&card->gdev->dev,
4374                         "TSO does not permit QDIO data connection isolation\n");
4375                 if (fallback)
4376                         card->options.isolation = card->options.prev_isolation;
4377                 break;
4378         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4379                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4380                         "support reflective relay mode\n");
4381                 if (fallback)
4382                         card->options.isolation = card->options.prev_isolation;
4383                 break;
4384         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4385                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4386                                         "enabled at the adjacent switch port");
4387                 if (fallback)
4388                         card->options.isolation = card->options.prev_isolation;
4389                 break;
4390         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4391                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4392                                         "at the adjacent switch failed\n");
4393                 break;
4394         default:
4395                 /* this should never happen */
4396                 if (fallback)
4397                         card->options.isolation = card->options.prev_isolation;
4398                 break;
4399         }
4400         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4401         return 0;
4402 }
4403
4404 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4405                 enum qeth_ipa_isolation_modes isolation, int fallback)
4406 {
4407         int rc;
4408         struct qeth_cmd_buffer *iob;
4409         struct qeth_ipa_cmd *cmd;
4410         struct qeth_set_access_ctrl *access_ctrl_req;
4411
4412         QETH_CARD_TEXT(card, 4, "setacctl");
4413
4414         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4415         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4416
4417         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4418                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4419                                    sizeof(struct qeth_set_access_ctrl));
4420         if (!iob)
4421                 return -ENOMEM;
4422         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4423         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4424         access_ctrl_req->subcmd_code = isolation;
4425
4426         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4427                                &fallback);
4428         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4429         return rc;
4430 }
4431
4432 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4433 {
4434         int rc = 0;
4435
4436         QETH_CARD_TEXT(card, 4, "setactlo");
4437
4438         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4439              card->info.type == QETH_CARD_TYPE_OSX) &&
4440              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4441                 rc = qeth_setadpparms_set_access_ctrl(card,
4442                         card->options.isolation, fallback);
4443                 if (rc) {
4444                         QETH_DBF_MESSAGE(3,
4445                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4446                                 card->gdev->dev.kobj.name,
4447                                 rc);
4448                         rc = -EOPNOTSUPP;
4449                 }
4450         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4451                 card->options.isolation = ISOLATION_MODE_NONE;
4452
4453                 dev_err(&card->gdev->dev, "Adapter does not "
4454                         "support QDIO data connection isolation\n");
4455                 rc = -EOPNOTSUPP;
4456         }
4457         return rc;
4458 }
4459 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4460
4461 void qeth_tx_timeout(struct net_device *dev)
4462 {
4463         struct qeth_card *card;
4464
4465         card = dev->ml_priv;
4466         QETH_CARD_TEXT(card, 4, "txtimeo");
4467         card->stats.tx_errors++;
4468         qeth_schedule_recovery(card);
4469 }
4470 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4471
4472 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4473 {
4474         struct qeth_card *card = dev->ml_priv;
4475         int rc = 0;
4476
4477         switch (regnum) {
4478         case MII_BMCR: /* Basic mode control register */
4479                 rc = BMCR_FULLDPLX;
4480                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4481                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4482                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4483                         rc |= BMCR_SPEED100;
4484                 break;
4485         case MII_BMSR: /* Basic mode status register */
4486                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4487                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4488                      BMSR_100BASE4;
4489                 break;
4490         case MII_PHYSID1: /* PHYS ID 1 */
4491                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4492                      dev->dev_addr[2];
4493                 rc = (rc >> 5) & 0xFFFF;
4494                 break;
4495         case MII_PHYSID2: /* PHYS ID 2 */
4496                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4497                 break;
4498         case MII_ADVERTISE: /* Advertisement control reg */
4499                 rc = ADVERTISE_ALL;
4500                 break;
4501         case MII_LPA: /* Link partner ability reg */
4502                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4503                      LPA_100BASE4 | LPA_LPACK;
4504                 break;
4505         case MII_EXPANSION: /* Expansion register */
4506                 break;
4507         case MII_DCOUNTER: /* disconnect counter */
4508                 break;
4509         case MII_FCSCOUNTER: /* false carrier counter */
4510                 break;
4511         case MII_NWAYTEST: /* N-way auto-neg test register */
4512                 break;
4513         case MII_RERRCOUNTER: /* rx error counter */
4514                 rc = card->stats.rx_errors;
4515                 break;
4516         case MII_SREVISION: /* silicon revision */
4517                 break;
4518         case MII_RESV1: /* reserved 1 */
4519                 break;
4520         case MII_LBRERROR: /* loopback, rx, bypass error */
4521                 break;
4522         case MII_PHYADDR: /* physical address */
4523                 break;
4524         case MII_RESV2: /* reserved 2 */
4525                 break;
4526         case MII_TPISTATUS: /* TPI status for 10mbps */
4527                 break;
4528         case MII_NCONFIG: /* network interface config */
4529                 break;
4530         default:
4531                 break;
4532         }
4533         return rc;
4534 }
4535
4536 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4537                 struct qeth_cmd_buffer *iob, int len,
4538                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4539                         unsigned long),
4540                 void *reply_param)
4541 {
4542         u16 s1, s2;
4543
4544         QETH_CARD_TEXT(card, 4, "sendsnmp");
4545
4546         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4547         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4548                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4549         /* adjust PDU length fields in IPA_PDU_HEADER */
4550         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4551         s2 = (u32) len;
4552         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4553         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4554         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4555         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4556         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4557                                       reply_cb, reply_param);
4558 }
4559
4560 static int qeth_snmp_command_cb(struct qeth_card *card,
4561                 struct qeth_reply *reply, unsigned long sdata)
4562 {
4563         struct qeth_ipa_cmd *cmd;
4564         struct qeth_arp_query_info *qinfo;
4565         struct qeth_snmp_cmd *snmp;
4566         unsigned char *data;
4567         __u16 data_len;
4568
4569         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4570
4571         cmd = (struct qeth_ipa_cmd *) sdata;
4572         data = (unsigned char *)((char *)cmd - reply->offset);
4573         qinfo = (struct qeth_arp_query_info *) reply->param;
4574         snmp = &cmd->data.setadapterparms.data.snmp;
4575
4576         if (cmd->hdr.return_code) {
4577                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4578                 return 0;
4579         }
4580         if (cmd->data.setadapterparms.hdr.return_code) {
4581                 cmd->hdr.return_code =
4582                         cmd->data.setadapterparms.hdr.return_code;
4583                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4584                 return 0;
4585         }
4586         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4587         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4588                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4589         else
4590                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4591
4592         /* check if there is enough room in userspace */
4593         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4594                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4595                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4596                 return 0;
4597         }
4598         QETH_CARD_TEXT_(card, 4, "snore%i",
4599                        cmd->data.setadapterparms.hdr.used_total);
4600         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4601                 cmd->data.setadapterparms.hdr.seq_no);
4602         /*copy entries to user buffer*/
4603         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4604                 memcpy(qinfo->udata + qinfo->udata_offset,
4605                        (char *)snmp,
4606                        data_len + offsetof(struct qeth_snmp_cmd, data));
4607                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4608         } else {
4609                 memcpy(qinfo->udata + qinfo->udata_offset,
4610                        (char *)&snmp->request, data_len);
4611         }
4612         qinfo->udata_offset += data_len;
4613         /* check if all replies received ... */
4614                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4615                                cmd->data.setadapterparms.hdr.used_total);
4616                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4617                                cmd->data.setadapterparms.hdr.seq_no);
4618         if (cmd->data.setadapterparms.hdr.seq_no <
4619             cmd->data.setadapterparms.hdr.used_total)
4620                 return 1;
4621         return 0;
4622 }
4623
4624 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4625 {
4626         struct qeth_cmd_buffer *iob;
4627         struct qeth_ipa_cmd *cmd;
4628         struct qeth_snmp_ureq *ureq;
4629         unsigned int req_len;
4630         struct qeth_arp_query_info qinfo = {0, };
4631         int rc = 0;
4632
4633         QETH_CARD_TEXT(card, 3, "snmpcmd");
4634
4635         if (card->info.guestlan)
4636                 return -EOPNOTSUPP;
4637
4638         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4639             (!card->options.layer2)) {
4640                 return -EOPNOTSUPP;
4641         }
4642         /* skip 4 bytes (data_len struct member) to get req_len */
4643         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4644                 return -EFAULT;
4645         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4646                        sizeof(struct qeth_ipacmd_hdr) -
4647                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4648                 return -EINVAL;
4649         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4650         if (IS_ERR(ureq)) {
4651                 QETH_CARD_TEXT(card, 2, "snmpnome");
4652                 return PTR_ERR(ureq);
4653         }
4654         qinfo.udata_len = ureq->hdr.data_len;
4655         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4656         if (!qinfo.udata) {
4657                 kfree(ureq);
4658                 return -ENOMEM;
4659         }
4660         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4661
4662         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4663                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4664         if (!iob) {
4665                 rc = -ENOMEM;
4666                 goto out;
4667         }
4668         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4669         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4670         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4671                                     qeth_snmp_command_cb, (void *)&qinfo);
4672         if (rc)
4673                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4674                            QETH_CARD_IFNAME(card), rc);
4675         else {
4676                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4677                         rc = -EFAULT;
4678         }
4679 out:
4680         kfree(ureq);
4681         kfree(qinfo.udata);
4682         return rc;
4683 }
4684
4685 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4686                 struct qeth_reply *reply, unsigned long data)
4687 {
4688         struct qeth_ipa_cmd *cmd;
4689         struct qeth_qoat_priv *priv;
4690         char *resdata;
4691         int resdatalen;
4692
4693         QETH_CARD_TEXT(card, 3, "qoatcb");
4694
4695         cmd = (struct qeth_ipa_cmd *)data;
4696         priv = (struct qeth_qoat_priv *)reply->param;
4697         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4698         resdata = (char *)data + 28;
4699
4700         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4701                 cmd->hdr.return_code = IPA_RC_FFFF;
4702                 return 0;
4703         }
4704
4705         memcpy((priv->buffer + priv->response_len), resdata,
4706                 resdatalen);
4707         priv->response_len += resdatalen;
4708
4709         if (cmd->data.setadapterparms.hdr.seq_no <
4710             cmd->data.setadapterparms.hdr.used_total)
4711                 return 1;
4712         return 0;
4713 }
4714
4715 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4716 {
4717         int rc = 0;
4718         struct qeth_cmd_buffer *iob;
4719         struct qeth_ipa_cmd *cmd;
4720         struct qeth_query_oat *oat_req;
4721         struct qeth_query_oat_data oat_data;
4722         struct qeth_qoat_priv priv;
4723         void __user *tmp;
4724
4725         QETH_CARD_TEXT(card, 3, "qoatcmd");
4726
4727         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4728                 rc = -EOPNOTSUPP;
4729                 goto out;
4730         }
4731
4732         if (copy_from_user(&oat_data, udata,
4733             sizeof(struct qeth_query_oat_data))) {
4734                         rc = -EFAULT;
4735                         goto out;
4736         }
4737
4738         priv.buffer_len = oat_data.buffer_len;
4739         priv.response_len = 0;
4740         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4741         if (!priv.buffer) {
4742                 rc = -ENOMEM;
4743                 goto out;
4744         }
4745
4746         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4747                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4748                                    sizeof(struct qeth_query_oat));
4749         if (!iob) {
4750                 rc = -ENOMEM;
4751                 goto out_free;
4752         }
4753         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4754         oat_req = &cmd->data.setadapterparms.data.query_oat;
4755         oat_req->subcmd_code = oat_data.command;
4756
4757         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4758                                &priv);
4759         if (!rc) {
4760                 if (is_compat_task())
4761                         tmp = compat_ptr(oat_data.ptr);
4762                 else
4763                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4764
4765                 if (copy_to_user(tmp, priv.buffer,
4766                     priv.response_len)) {
4767                         rc = -EFAULT;
4768                         goto out_free;
4769                 }
4770
4771                 oat_data.response_len = priv.response_len;
4772
4773                 if (copy_to_user(udata, &oat_data,
4774                     sizeof(struct qeth_query_oat_data)))
4775                         rc = -EFAULT;
4776         } else
4777                 if (rc == IPA_RC_FFFF)
4778                         rc = -EFAULT;
4779
4780 out_free:
4781         kfree(priv.buffer);
4782 out:
4783         return rc;
4784 }
4785
4786 static int qeth_query_card_info_cb(struct qeth_card *card,
4787                                    struct qeth_reply *reply, unsigned long data)
4788 {
4789         struct qeth_ipa_cmd *cmd;
4790         struct qeth_query_card_info *card_info;
4791         struct carrier_info *carrier_info;
4792
4793         QETH_CARD_TEXT(card, 2, "qcrdincb");
4794         carrier_info = (struct carrier_info *)reply->param;
4795         cmd = (struct qeth_ipa_cmd *)data;
4796         card_info = &cmd->data.setadapterparms.data.card_info;
4797         if (cmd->data.setadapterparms.hdr.return_code == 0) {
4798                 carrier_info->card_type = card_info->card_type;
4799                 carrier_info->port_mode = card_info->port_mode;
4800                 carrier_info->port_speed = card_info->port_speed;
4801         }
4802
4803         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4804         return 0;
4805 }
4806
4807 static int qeth_query_card_info(struct qeth_card *card,
4808                                 struct carrier_info *carrier_info)
4809 {
4810         struct qeth_cmd_buffer *iob;
4811
4812         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4813         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4814                 return -EOPNOTSUPP;
4815         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4816                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4817         if (!iob)
4818                 return -ENOMEM;
4819         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4820                                         (void *)carrier_info);
4821 }
4822
4823 /**
4824  * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4825  * @card: pointer to a qeth_card
4826  *
4827  * Returns
4828  *      0, if a MAC address has been set for the card's netdevice
4829  *      a return code, for various error conditions
4830  */
4831 int qeth_vm_request_mac(struct qeth_card *card)
4832 {
4833         struct diag26c_mac_resp *response;
4834         struct diag26c_mac_req *request;
4835         struct ccw_dev_id id;
4836         int rc;
4837
4838         QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4839
4840         if (!card->dev)
4841                 return -ENODEV;
4842
4843         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4844         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4845         if (!request || !response) {
4846                 rc = -ENOMEM;
4847                 goto out;
4848         }
4849
4850         ccw_device_get_id(CARD_DDEV(card), &id);
4851         request->resp_buf_len = sizeof(*response);
4852         request->resp_version = DIAG26C_VERSION2;
4853         request->op_code = DIAG26C_GET_MAC;
4854         request->devno = id.devno;
4855
4856         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4857         rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4858         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4859         if (rc)
4860                 goto out;
4861         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4862
4863         if (request->resp_buf_len < sizeof(*response) ||
4864             response->version != request->resp_version) {
4865                 rc = -EIO;
4866                 QETH_DBF_TEXT(SETUP, 2, "badresp");
4867                 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4868                              sizeof(request->resp_buf_len));
4869         } else if (!is_valid_ether_addr(response->mac)) {
4870                 rc = -EINVAL;
4871                 QETH_DBF_TEXT(SETUP, 2, "badmac");
4872                 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4873         } else {
4874                 ether_addr_copy(card->dev->dev_addr, response->mac);
4875         }
4876
4877 out:
4878         kfree(response);
4879         kfree(request);
4880         return rc;
4881 }
4882 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4883
4884 static int qeth_get_qdio_q_format(struct qeth_card *card)
4885 {
4886         if (card->info.type == QETH_CARD_TYPE_IQD)
4887                 return QDIO_IQDIO_QFMT;
4888         else
4889                 return QDIO_QETH_QFMT;
4890 }
4891
4892 static void qeth_determine_capabilities(struct qeth_card *card)
4893 {
4894         int rc;
4895         int length;
4896         char *prcd;
4897         struct ccw_device *ddev;
4898         int ddev_offline = 0;
4899
4900         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4901         ddev = CARD_DDEV(card);
4902         if (!ddev->online) {
4903                 ddev_offline = 1;
4904                 rc = ccw_device_set_online(ddev);
4905                 if (rc) {
4906                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4907                         goto out;
4908                 }
4909         }
4910
4911         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4912         if (rc) {
4913                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4914                         dev_name(&card->gdev->dev), rc);
4915                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4916                 goto out_offline;
4917         }
4918         qeth_configure_unitaddr(card, prcd);
4919         if (ddev_offline)
4920                 qeth_configure_blkt_default(card, prcd);
4921         kfree(prcd);
4922
4923         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4924         if (rc)
4925                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4926
4927         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4928         QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4929         QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4930         QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4931         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4932         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4933             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4934             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4935                 dev_info(&card->gdev->dev,
4936                         "Completion Queueing supported\n");
4937         } else {
4938                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4939         }
4940
4941
4942 out_offline:
4943         if (ddev_offline == 1)
4944                 ccw_device_set_offline(ddev);
4945 out:
4946         return;
4947 }
4948
4949 static void qeth_qdio_establish_cq(struct qeth_card *card,
4950                                    struct qdio_buffer **in_sbal_ptrs,
4951                                    void (**queue_start_poll)
4952                                         (struct ccw_device *, int,
4953                                          unsigned long))
4954 {
4955         int i;
4956
4957         if (card->options.cq == QETH_CQ_ENABLED) {
4958                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4959                              (card->qdio.no_in_queues - 1);
4960                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4961                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4962                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4963                 }
4964
4965                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4966         }
4967 }
4968
4969 static int qeth_qdio_establish(struct qeth_card *card)
4970 {
4971         struct qdio_initialize init_data;
4972         char *qib_param_field;
4973         struct qdio_buffer **in_sbal_ptrs;
4974         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4975         struct qdio_buffer **out_sbal_ptrs;
4976         int i, j, k;
4977         int rc = 0;
4978
4979         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4980
4981         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4982                               GFP_KERNEL);
4983         if (!qib_param_field) {
4984                 rc =  -ENOMEM;
4985                 goto out_free_nothing;
4986         }
4987
4988         qeth_create_qib_param_field(card, qib_param_field);
4989         qeth_create_qib_param_field_blkt(card, qib_param_field);
4990
4991         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4992                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4993                                GFP_KERNEL);
4994         if (!in_sbal_ptrs) {
4995                 rc = -ENOMEM;
4996                 goto out_free_qib_param;
4997         }
4998         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4999                 in_sbal_ptrs[i] = (struct qdio_buffer *)
5000                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
5001         }
5002
5003         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
5004                                    GFP_KERNEL);
5005         if (!queue_start_poll) {
5006                 rc = -ENOMEM;
5007                 goto out_free_in_sbals;
5008         }
5009         for (i = 0; i < card->qdio.no_in_queues; ++i)
5010                 queue_start_poll[i] = card->discipline->start_poll;
5011
5012         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
5013
5014         out_sbal_ptrs =
5015                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
5016                         sizeof(void *), GFP_KERNEL);
5017         if (!out_sbal_ptrs) {
5018                 rc = -ENOMEM;
5019                 goto out_free_queue_start_poll;
5020         }
5021         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
5022                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
5023                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
5024                                 card->qdio.out_qs[i]->bufs[j]->buffer);
5025                 }
5026
5027         memset(&init_data, 0, sizeof(struct qdio_initialize));
5028         init_data.cdev                   = CARD_DDEV(card);
5029         init_data.q_format               = qeth_get_qdio_q_format(card);
5030         init_data.qib_param_field_format = 0;
5031         init_data.qib_param_field        = qib_param_field;
5032         init_data.no_input_qs            = card->qdio.no_in_queues;
5033         init_data.no_output_qs           = card->qdio.no_out_queues;
5034         init_data.input_handler          = card->discipline->input_handler;
5035         init_data.output_handler         = card->discipline->output_handler;
5036         init_data.queue_start_poll_array = queue_start_poll;
5037         init_data.int_parm               = (unsigned long) card;
5038         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
5039         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
5040         init_data.output_sbal_state_array = card->qdio.out_bufstates;
5041         init_data.scan_threshold =
5042                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
5043
5044         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5045                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5046                 rc = qdio_allocate(&init_data);
5047                 if (rc) {
5048                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5049                         goto out;
5050                 }
5051                 rc = qdio_establish(&init_data);
5052                 if (rc) {
5053                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5054                         qdio_free(CARD_DDEV(card));
5055                 }
5056         }
5057
5058         switch (card->options.cq) {
5059         case QETH_CQ_ENABLED:
5060                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5061                 break;
5062         case QETH_CQ_DISABLED:
5063                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5064                 break;
5065         default:
5066                 break;
5067         }
5068 out:
5069         kfree(out_sbal_ptrs);
5070 out_free_queue_start_poll:
5071         kfree(queue_start_poll);
5072 out_free_in_sbals:
5073         kfree(in_sbal_ptrs);
5074 out_free_qib_param:
5075         kfree(qib_param_field);
5076 out_free_nothing:
5077         return rc;
5078 }
5079
5080 static void qeth_core_free_card(struct qeth_card *card)
5081 {
5082
5083         QETH_DBF_TEXT(SETUP, 2, "freecrd");
5084         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5085         qeth_clean_channel(&card->read);
5086         qeth_clean_channel(&card->write);
5087         if (card->dev)
5088                 free_netdev(card->dev);
5089         qeth_free_qdio_buffers(card);
5090         unregister_service_level(&card->qeth_service_level);
5091         kfree(card);
5092 }
5093
5094 void qeth_trace_features(struct qeth_card *card)
5095 {
5096         QETH_CARD_TEXT(card, 2, "features");
5097         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5098         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5099         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5100         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5101                       sizeof(card->info.diagass_support));
5102 }
5103 EXPORT_SYMBOL_GPL(qeth_trace_features);
5104
5105 static struct ccw_device_id qeth_ids[] = {
5106         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5107                                         .driver_info = QETH_CARD_TYPE_OSD},
5108         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5109                                         .driver_info = QETH_CARD_TYPE_IQD},
5110         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5111                                         .driver_info = QETH_CARD_TYPE_OSN},
5112         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5113                                         .driver_info = QETH_CARD_TYPE_OSM},
5114         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5115                                         .driver_info = QETH_CARD_TYPE_OSX},
5116         {},
5117 };
5118 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5119
5120 static struct ccw_driver qeth_ccw_driver = {
5121         .driver = {
5122                 .owner = THIS_MODULE,
5123                 .name = "qeth",
5124         },
5125         .ids = qeth_ids,
5126         .probe = ccwgroup_probe_ccwdev,
5127         .remove = ccwgroup_remove_ccwdev,
5128 };
5129
5130 int qeth_core_hardsetup_card(struct qeth_card *card)
5131 {
5132         int retries = 3;
5133         int rc;
5134
5135         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5136         atomic_set(&card->force_alloc_skb, 0);
5137         qeth_update_from_chp_desc(card);
5138 retry:
5139         if (retries < 3)
5140                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5141                         dev_name(&card->gdev->dev));
5142         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5143         ccw_device_set_offline(CARD_DDEV(card));
5144         ccw_device_set_offline(CARD_WDEV(card));
5145         ccw_device_set_offline(CARD_RDEV(card));
5146         qdio_free(CARD_DDEV(card));
5147         rc = ccw_device_set_online(CARD_RDEV(card));
5148         if (rc)
5149                 goto retriable;
5150         rc = ccw_device_set_online(CARD_WDEV(card));
5151         if (rc)
5152                 goto retriable;
5153         rc = ccw_device_set_online(CARD_DDEV(card));
5154         if (rc)
5155                 goto retriable;
5156 retriable:
5157         if (rc == -ERESTARTSYS) {
5158                 QETH_DBF_TEXT(SETUP, 2, "break1");
5159                 return rc;
5160         } else if (rc) {
5161                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5162                 if (--retries < 0)
5163                         goto out;
5164                 else
5165                         goto retry;
5166         }
5167         qeth_determine_capabilities(card);
5168         qeth_init_tokens(card);
5169         qeth_init_func_level(card);
5170         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5171         if (rc == -ERESTARTSYS) {
5172                 QETH_DBF_TEXT(SETUP, 2, "break2");
5173                 return rc;
5174         } else if (rc) {
5175                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5176                 if (--retries < 0)
5177                         goto out;
5178                 else
5179                         goto retry;
5180         }
5181         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5182         if (rc == -ERESTARTSYS) {
5183                 QETH_DBF_TEXT(SETUP, 2, "break3");
5184                 return rc;
5185         } else if (rc) {
5186                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5187                 if (--retries < 0)
5188                         goto out;
5189                 else
5190                         goto retry;
5191         }
5192         card->read_or_write_problem = 0;
5193         rc = qeth_mpc_initialize(card);
5194         if (rc) {
5195                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5196                 goto out;
5197         }
5198
5199         rc = qeth_send_startlan(card);
5200         if (rc) {
5201                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5202                 if (rc == IPA_RC_LAN_OFFLINE) {
5203                         dev_warn(&card->gdev->dev,
5204                                 "The LAN is offline\n");
5205                         card->lan_online = 0;
5206                 } else {
5207                         rc = -ENODEV;
5208                         goto out;
5209                 }
5210         } else
5211                 card->lan_online = 1;
5212
5213         card->options.ipa4.supported_funcs = 0;
5214         card->options.ipa6.supported_funcs = 0;
5215         card->options.adp.supported_funcs = 0;
5216         card->options.sbp.supported_funcs = 0;
5217         card->info.diagass_support = 0;
5218         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5219         if (rc == -ENOMEM)
5220                 goto out;
5221         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5222                 rc = qeth_query_setadapterparms(card);
5223                 if (rc < 0) {
5224                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5225                         goto out;
5226                 }
5227         }
5228         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5229                 rc = qeth_query_setdiagass(card);
5230                 if (rc < 0) {
5231                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5232                         goto out;
5233                 }
5234         }
5235         return 0;
5236 out:
5237         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5238                 "an error on the device\n");
5239         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5240                 dev_name(&card->gdev->dev), rc);
5241         return rc;
5242 }
5243 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5244
5245 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5246                                  struct sk_buff *skb, int offset, int data_len)
5247 {
5248         struct page *page = virt_to_page(element->addr);
5249         unsigned int next_frag;
5250
5251         /* first fill the linear space */
5252         if (!skb->len) {
5253                 unsigned int linear = min(data_len, skb_tailroom(skb));
5254
5255                 skb_put_data(skb, element->addr + offset, linear);
5256                 data_len -= linear;
5257                 if (!data_len)
5258                         return;
5259                 offset += linear;
5260                 /* fall through to add page frag for remaining data */
5261         }
5262
5263         next_frag = skb_shinfo(skb)->nr_frags;
5264         get_page(page);
5265         skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5266 }
5267
5268 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5269 {
5270         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5271 }
5272
5273 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5274                 struct qeth_qdio_buffer *qethbuffer,
5275                 struct qdio_buffer_element **__element, int *__offset,
5276                 struct qeth_hdr **hdr)
5277 {
5278         struct qdio_buffer_element *element = *__element;
5279         struct qdio_buffer *buffer = qethbuffer->buffer;
5280         int offset = *__offset;
5281         struct sk_buff *skb;
5282         int skb_len = 0;
5283         void *data_ptr;
5284         int data_len;
5285         int headroom = 0;
5286         int use_rx_sg = 0;
5287
5288         /* qeth_hdr must not cross element boundaries */
5289         while (element->length < offset + sizeof(struct qeth_hdr)) {
5290                 if (qeth_is_last_sbale(element))
5291                         return NULL;
5292                 element++;
5293                 offset = 0;
5294         }
5295         *hdr = element->addr + offset;
5296
5297         offset += sizeof(struct qeth_hdr);
5298         switch ((*hdr)->hdr.l2.id) {
5299         case QETH_HEADER_TYPE_LAYER2:
5300                 skb_len = (*hdr)->hdr.l2.pkt_length;
5301                 break;
5302         case QETH_HEADER_TYPE_LAYER3:
5303                 skb_len = (*hdr)->hdr.l3.length;
5304                 headroom = ETH_HLEN;
5305                 break;
5306         case QETH_HEADER_TYPE_OSN:
5307                 skb_len = (*hdr)->hdr.osn.pdu_length;
5308                 headroom = sizeof(struct qeth_hdr);
5309                 break;
5310         default:
5311                 break;
5312         }
5313
5314         if (!skb_len)
5315                 return NULL;
5316
5317         if (((skb_len >= card->options.rx_sg_cb) &&
5318              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5319              (!atomic_read(&card->force_alloc_skb))) ||
5320             (card->options.cq == QETH_CQ_ENABLED))
5321                 use_rx_sg = 1;
5322
5323         if (use_rx_sg && qethbuffer->rx_skb) {
5324                 /* QETH_CQ_ENABLED only: */
5325                 skb = qethbuffer->rx_skb;
5326                 qethbuffer->rx_skb = NULL;
5327         } else {
5328                 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5329
5330                 skb = dev_alloc_skb(linear + headroom);
5331         }
5332         if (!skb)
5333                 goto no_mem;
5334         if (headroom)
5335                 skb_reserve(skb, headroom);
5336
5337         data_ptr = element->addr + offset;
5338         while (skb_len) {
5339                 data_len = min(skb_len, (int)(element->length - offset));
5340                 if (data_len) {
5341                         if (use_rx_sg)
5342                                 qeth_create_skb_frag(element, skb, offset,
5343                                                      data_len);
5344                         else
5345                                 skb_put_data(skb, data_ptr, data_len);
5346                 }
5347                 skb_len -= data_len;
5348                 if (skb_len) {
5349                         if (qeth_is_last_sbale(element)) {
5350                                 QETH_CARD_TEXT(card, 4, "unexeob");
5351                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5352                                 dev_kfree_skb_any(skb);
5353                                 card->stats.rx_errors++;
5354                                 return NULL;
5355                         }
5356                         element++;
5357                         offset = 0;
5358                         data_ptr = element->addr;
5359                 } else {
5360                         offset += data_len;
5361                 }
5362         }
5363         *__element = element;
5364         *__offset = offset;
5365         if (use_rx_sg && card->options.performance_stats) {
5366                 card->perf_stats.sg_skbs_rx++;
5367                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5368         }
5369         return skb;
5370 no_mem:
5371         if (net_ratelimit()) {
5372                 QETH_CARD_TEXT(card, 2, "noskbmem");
5373         }
5374         card->stats.rx_dropped++;
5375         return NULL;
5376 }
5377 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5378
5379 int qeth_poll(struct napi_struct *napi, int budget)
5380 {
5381         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5382         int work_done = 0;
5383         struct qeth_qdio_buffer *buffer;
5384         int done;
5385         int new_budget = budget;
5386
5387         if (card->options.performance_stats) {
5388                 card->perf_stats.inbound_cnt++;
5389                 card->perf_stats.inbound_start_time = qeth_get_micros();
5390         }
5391
5392         while (1) {
5393                 if (!card->rx.b_count) {
5394                         card->rx.qdio_err = 0;
5395                         card->rx.b_count = qdio_get_next_buffers(
5396                                 card->data.ccwdev, 0, &card->rx.b_index,
5397                                 &card->rx.qdio_err);
5398                         if (card->rx.b_count <= 0) {
5399                                 card->rx.b_count = 0;
5400                                 break;
5401                         }
5402                         card->rx.b_element =
5403                                 &card->qdio.in_q->bufs[card->rx.b_index]
5404                                 .buffer->element[0];
5405                         card->rx.e_offset = 0;
5406                 }
5407
5408                 while (card->rx.b_count) {
5409                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5410                         if (!(card->rx.qdio_err &&
5411                             qeth_check_qdio_errors(card, buffer->buffer,
5412                             card->rx.qdio_err, "qinerr")))
5413                                 work_done +=
5414                                         card->discipline->process_rx_buffer(
5415                                                 card, new_budget, &done);
5416                         else
5417                                 done = 1;
5418
5419                         if (done) {
5420                                 if (card->options.performance_stats)
5421                                         card->perf_stats.bufs_rec++;
5422                                 qeth_put_buffer_pool_entry(card,
5423                                         buffer->pool_entry);
5424                                 qeth_queue_input_buffer(card, card->rx.b_index);
5425                                 card->rx.b_count--;
5426                                 if (card->rx.b_count) {
5427                                         card->rx.b_index =
5428                                                 (card->rx.b_index + 1) %
5429                                                 QDIO_MAX_BUFFERS_PER_Q;
5430                                         card->rx.b_element =
5431                                                 &card->qdio.in_q
5432                                                 ->bufs[card->rx.b_index]
5433                                                 .buffer->element[0];
5434                                         card->rx.e_offset = 0;
5435                                 }
5436                         }
5437
5438                         if (work_done >= budget)
5439                                 goto out;
5440                         else
5441                                 new_budget = budget - work_done;
5442                 }
5443         }
5444
5445         napi_complete_done(napi, work_done);
5446         if (qdio_start_irq(card->data.ccwdev, 0))
5447                 napi_schedule(&card->napi);
5448 out:
5449         if (card->options.performance_stats)
5450                 card->perf_stats.inbound_time += qeth_get_micros() -
5451                         card->perf_stats.inbound_start_time;
5452         return work_done;
5453 }
5454 EXPORT_SYMBOL_GPL(qeth_poll);
5455
5456 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5457 {
5458         if (!cmd->hdr.return_code)
5459                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5460         return cmd->hdr.return_code;
5461 }
5462
5463 int qeth_setassparms_cb(struct qeth_card *card,
5464                         struct qeth_reply *reply, unsigned long data)
5465 {
5466         struct qeth_ipa_cmd *cmd;
5467
5468         QETH_CARD_TEXT(card, 4, "defadpcb");
5469
5470         cmd = (struct qeth_ipa_cmd *) data;
5471         if (cmd->hdr.return_code == 0) {
5472                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5473                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5474                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5475                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5476                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5477         }
5478         return 0;
5479 }
5480 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5481
5482 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5483                                                  enum qeth_ipa_funcs ipa_func,
5484                                                  __u16 cmd_code, __u16 len,
5485                                                  enum qeth_prot_versions prot)
5486 {
5487         struct qeth_cmd_buffer *iob;
5488         struct qeth_ipa_cmd *cmd;
5489
5490         QETH_CARD_TEXT(card, 4, "getasscm");
5491         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5492
5493         if (iob) {
5494                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5495                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5496                 cmd->data.setassparms.hdr.length = 8 + len;
5497                 cmd->data.setassparms.hdr.command_code = cmd_code;
5498                 cmd->data.setassparms.hdr.return_code = 0;
5499                 cmd->data.setassparms.hdr.seq_no = 0;
5500         }
5501
5502         return iob;
5503 }
5504 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5505
5506 int qeth_send_setassparms(struct qeth_card *card,
5507                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5508                           int (*reply_cb)(struct qeth_card *,
5509                                           struct qeth_reply *, unsigned long),
5510                           void *reply_param)
5511 {
5512         int rc;
5513         struct qeth_ipa_cmd *cmd;
5514
5515         QETH_CARD_TEXT(card, 4, "sendassp");
5516
5517         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5518         if (len <= sizeof(__u32))
5519                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5520         else   /* (len > sizeof(__u32)) */
5521                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5522
5523         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5524         return rc;
5525 }
5526 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5527
5528 int qeth_send_simple_setassparms(struct qeth_card *card,
5529                                  enum qeth_ipa_funcs ipa_func,
5530                                  __u16 cmd_code, long data)
5531 {
5532         int rc;
5533         int length = 0;
5534         struct qeth_cmd_buffer *iob;
5535
5536         QETH_CARD_TEXT(card, 4, "simassp4");
5537         if (data)
5538                 length = sizeof(__u32);
5539         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5540                                        length, QETH_PROT_IPV4);
5541         if (!iob)
5542                 return -ENOMEM;
5543         rc = qeth_send_setassparms(card, iob, length, data,
5544                                    qeth_setassparms_cb, NULL);
5545         return rc;
5546 }
5547 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5548
5549 static void qeth_unregister_dbf_views(void)
5550 {
5551         int x;
5552         for (x = 0; x < QETH_DBF_INFOS; x++) {
5553                 debug_unregister(qeth_dbf[x].id);
5554                 qeth_dbf[x].id = NULL;
5555         }
5556 }
5557
5558 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5559 {
5560         char dbf_txt_buf[32];
5561         va_list args;
5562
5563         if (!debug_level_enabled(id, level))
5564                 return;
5565         va_start(args, fmt);
5566         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5567         va_end(args);
5568         debug_text_event(id, level, dbf_txt_buf);
5569 }
5570 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5571
5572 static int qeth_register_dbf_views(void)
5573 {
5574         int ret;
5575         int x;
5576
5577         for (x = 0; x < QETH_DBF_INFOS; x++) {
5578                 /* register the areas */
5579                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5580                                                 qeth_dbf[x].pages,
5581                                                 qeth_dbf[x].areas,
5582                                                 qeth_dbf[x].len);
5583                 if (qeth_dbf[x].id == NULL) {
5584                         qeth_unregister_dbf_views();
5585                         return -ENOMEM;
5586                 }
5587
5588                 /* register a view */
5589                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5590                 if (ret) {
5591                         qeth_unregister_dbf_views();
5592                         return ret;
5593                 }
5594
5595                 /* set a passing level */
5596                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5597         }
5598
5599         return 0;
5600 }
5601
5602 int qeth_core_load_discipline(struct qeth_card *card,
5603                 enum qeth_discipline_id discipline)
5604 {
5605         int rc = 0;
5606
5607         mutex_lock(&qeth_mod_mutex);
5608         switch (discipline) {
5609         case QETH_DISCIPLINE_LAYER3:
5610                 card->discipline = try_then_request_module(
5611                         symbol_get(qeth_l3_discipline), "qeth_l3");
5612                 break;
5613         case QETH_DISCIPLINE_LAYER2:
5614                 card->discipline = try_then_request_module(
5615                         symbol_get(qeth_l2_discipline), "qeth_l2");
5616                 break;
5617         default:
5618                 break;
5619         }
5620
5621         if (!card->discipline) {
5622                 dev_err(&card->gdev->dev, "There is no kernel module to "
5623                         "support discipline %d\n", discipline);
5624                 rc = -EINVAL;
5625         }
5626         mutex_unlock(&qeth_mod_mutex);
5627         return rc;
5628 }
5629
5630 void qeth_core_free_discipline(struct qeth_card *card)
5631 {
5632         if (card->options.layer2)
5633                 symbol_put(qeth_l2_discipline);
5634         else
5635                 symbol_put(qeth_l3_discipline);
5636         card->discipline = NULL;
5637 }
5638
5639 const struct device_type qeth_generic_devtype = {
5640         .name = "qeth_generic",
5641         .groups = qeth_generic_attr_groups,
5642 };
5643 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5644
5645 static const struct device_type qeth_osn_devtype = {
5646         .name = "qeth_osn",
5647         .groups = qeth_osn_attr_groups,
5648 };
5649
5650 #define DBF_NAME_LEN    20
5651
5652 struct qeth_dbf_entry {
5653         char dbf_name[DBF_NAME_LEN];
5654         debug_info_t *dbf_info;
5655         struct list_head dbf_list;
5656 };
5657
5658 static LIST_HEAD(qeth_dbf_list);
5659 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5660
5661 static debug_info_t *qeth_get_dbf_entry(char *name)
5662 {
5663         struct qeth_dbf_entry *entry;
5664         debug_info_t *rc = NULL;
5665
5666         mutex_lock(&qeth_dbf_list_mutex);
5667         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5668                 if (strcmp(entry->dbf_name, name) == 0) {
5669                         rc = entry->dbf_info;
5670                         break;
5671                 }
5672         }
5673         mutex_unlock(&qeth_dbf_list_mutex);
5674         return rc;
5675 }
5676
5677 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5678 {
5679         struct qeth_dbf_entry *new_entry;
5680
5681         card->debug = debug_register(name, 2, 1, 8);
5682         if (!card->debug) {
5683                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5684                 goto err;
5685         }
5686         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5687                 goto err_dbg;
5688         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5689         if (!new_entry)
5690                 goto err_dbg;
5691         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5692         new_entry->dbf_info = card->debug;
5693         mutex_lock(&qeth_dbf_list_mutex);
5694         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5695         mutex_unlock(&qeth_dbf_list_mutex);
5696
5697         return 0;
5698
5699 err_dbg:
5700         debug_unregister(card->debug);
5701 err:
5702         return -ENOMEM;
5703 }
5704
5705 static void qeth_clear_dbf_list(void)
5706 {
5707         struct qeth_dbf_entry *entry, *tmp;
5708
5709         mutex_lock(&qeth_dbf_list_mutex);
5710         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5711                 list_del(&entry->dbf_list);
5712                 debug_unregister(entry->dbf_info);
5713                 kfree(entry);
5714         }
5715         mutex_unlock(&qeth_dbf_list_mutex);
5716 }
5717
5718 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5719 {
5720         struct qeth_card *card;
5721         struct device *dev;
5722         int rc;
5723         enum qeth_discipline_id enforced_disc;
5724         unsigned long flags;
5725         char dbf_name[DBF_NAME_LEN];
5726
5727         QETH_DBF_TEXT(SETUP, 2, "probedev");
5728
5729         dev = &gdev->dev;
5730         if (!get_device(dev))
5731                 return -ENODEV;
5732
5733         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5734
5735         card = qeth_alloc_card();
5736         if (!card) {
5737                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5738                 rc = -ENOMEM;
5739                 goto err_dev;
5740         }
5741
5742         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5743                 dev_name(&gdev->dev));
5744         card->debug = qeth_get_dbf_entry(dbf_name);
5745         if (!card->debug) {
5746                 rc = qeth_add_dbf_entry(card, dbf_name);
5747                 if (rc)
5748                         goto err_card;
5749         }
5750
5751         card->read.ccwdev  = gdev->cdev[0];
5752         card->write.ccwdev = gdev->cdev[1];
5753         card->data.ccwdev  = gdev->cdev[2];
5754         dev_set_drvdata(&gdev->dev, card);
5755         card->gdev = gdev;
5756         gdev->cdev[0]->handler = qeth_irq;
5757         gdev->cdev[1]->handler = qeth_irq;
5758         gdev->cdev[2]->handler = qeth_irq;
5759
5760         qeth_determine_card_type(card);
5761         rc = qeth_setup_card(card);
5762         if (rc) {
5763                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5764                 goto err_card;
5765         }
5766
5767         qeth_determine_capabilities(card);
5768         enforced_disc = qeth_enforce_discipline(card);
5769         switch (enforced_disc) {
5770         case QETH_DISCIPLINE_UNDETERMINED:
5771                 gdev->dev.type = &qeth_generic_devtype;
5772                 break;
5773         default:
5774                 card->info.layer_enforced = true;
5775                 rc = qeth_core_load_discipline(card, enforced_disc);
5776                 if (rc)
5777                         goto err_card;
5778
5779                 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5780                                         ? card->discipline->devtype
5781                                         : &qeth_osn_devtype;
5782                 rc = card->discipline->setup(card->gdev);
5783                 if (rc)
5784                         goto err_disc;
5785                 break;
5786         }
5787
5788         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5789         list_add_tail(&card->list, &qeth_core_card_list.list);
5790         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5791         return 0;
5792
5793 err_disc:
5794         qeth_core_free_discipline(card);
5795 err_card:
5796         qeth_core_free_card(card);
5797 err_dev:
5798         put_device(dev);
5799         return rc;
5800 }
5801
5802 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5803 {
5804         unsigned long flags;
5805         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5806
5807         QETH_DBF_TEXT(SETUP, 2, "removedv");
5808
5809         if (card->discipline) {
5810                 card->discipline->remove(gdev);
5811                 qeth_core_free_discipline(card);
5812         }
5813
5814         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5815         list_del(&card->list);
5816         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5817         qeth_core_free_card(card);
5818         dev_set_drvdata(&gdev->dev, NULL);
5819         put_device(&gdev->dev);
5820         return;
5821 }
5822
5823 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5824 {
5825         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5826         int rc = 0;
5827         enum qeth_discipline_id def_discipline;
5828
5829         if (!card->discipline) {
5830                 if (card->info.type == QETH_CARD_TYPE_IQD)
5831                         def_discipline = QETH_DISCIPLINE_LAYER3;
5832                 else
5833                         def_discipline = QETH_DISCIPLINE_LAYER2;
5834                 rc = qeth_core_load_discipline(card, def_discipline);
5835                 if (rc)
5836                         goto err;
5837                 rc = card->discipline->setup(card->gdev);
5838                 if (rc) {
5839                         qeth_core_free_discipline(card);
5840                         goto err;
5841                 }
5842         }
5843         rc = card->discipline->set_online(gdev);
5844 err:
5845         return rc;
5846 }
5847
5848 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5849 {
5850         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5851         return card->discipline->set_offline(gdev);
5852 }
5853
5854 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5855 {
5856         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5857         qeth_set_allowed_threads(card, 0, 1);
5858         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5859                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5860         qeth_qdio_clear_card(card, 0);
5861         qeth_clear_qdio_buffers(card);
5862         qdio_free(CARD_DDEV(card));
5863 }
5864
5865 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5866 {
5867         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5868         if (card->discipline && card->discipline->freeze)
5869                 return card->discipline->freeze(gdev);
5870         return 0;
5871 }
5872
5873 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5874 {
5875         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5876         if (card->discipline && card->discipline->thaw)
5877                 return card->discipline->thaw(gdev);
5878         return 0;
5879 }
5880
5881 static int qeth_core_restore(struct ccwgroup_device *gdev)
5882 {
5883         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5884         if (card->discipline && card->discipline->restore)
5885                 return card->discipline->restore(gdev);
5886         return 0;
5887 }
5888
5889 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5890         .driver = {
5891                 .owner = THIS_MODULE,
5892                 .name = "qeth",
5893         },
5894         .ccw_driver = &qeth_ccw_driver,
5895         .setup = qeth_core_probe_device,
5896         .remove = qeth_core_remove_device,
5897         .set_online = qeth_core_set_online,
5898         .set_offline = qeth_core_set_offline,
5899         .shutdown = qeth_core_shutdown,
5900         .prepare = NULL,
5901         .complete = NULL,
5902         .freeze = qeth_core_freeze,
5903         .thaw = qeth_core_thaw,
5904         .restore = qeth_core_restore,
5905 };
5906
5907 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5908                            size_t count)
5909 {
5910         int err;
5911
5912         err = ccwgroup_create_dev(qeth_core_root_dev,
5913                                   &qeth_core_ccwgroup_driver, 3, buf);
5914
5915         return err ? err : count;
5916 }
5917 static DRIVER_ATTR_WO(group);
5918
5919 static struct attribute *qeth_drv_attrs[] = {
5920         &driver_attr_group.attr,
5921         NULL,
5922 };
5923 static struct attribute_group qeth_drv_attr_group = {
5924         .attrs = qeth_drv_attrs,
5925 };
5926 static const struct attribute_group *qeth_drv_attr_groups[] = {
5927         &qeth_drv_attr_group,
5928         NULL,
5929 };
5930
5931 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5932 {
5933         struct qeth_card *card = dev->ml_priv;
5934         struct mii_ioctl_data *mii_data;
5935         int rc = 0;
5936
5937         if (!card)
5938                 return -ENODEV;
5939
5940         if (!qeth_card_hw_is_reachable(card))
5941                 return -ENODEV;
5942
5943         if (card->info.type == QETH_CARD_TYPE_OSN)
5944                 return -EPERM;
5945
5946         switch (cmd) {
5947         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5948                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5949                 break;
5950         case SIOC_QETH_GET_CARD_TYPE:
5951                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5952                      card->info.type == QETH_CARD_TYPE_OSM ||
5953                      card->info.type == QETH_CARD_TYPE_OSX) &&
5954                     !card->info.guestlan)
5955                         return 1;
5956                 else
5957                         return 0;
5958         case SIOCGMIIPHY:
5959                 mii_data = if_mii(rq);
5960                 mii_data->phy_id = 0;
5961                 break;
5962         case SIOCGMIIREG:
5963                 mii_data = if_mii(rq);
5964                 if (mii_data->phy_id != 0)
5965                         rc = -EINVAL;
5966                 else
5967                         mii_data->val_out = qeth_mdio_read(dev,
5968                                 mii_data->phy_id, mii_data->reg_num);
5969                 break;
5970         case SIOC_QETH_QUERY_OAT:
5971                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5972                 break;
5973         default:
5974                 if (card->discipline->do_ioctl)
5975                         rc = card->discipline->do_ioctl(dev, rq, cmd);
5976                 else
5977                         rc = -EOPNOTSUPP;
5978         }
5979         if (rc)
5980                 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5981         return rc;
5982 }
5983 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5984
5985 static struct {
5986         const char str[ETH_GSTRING_LEN];
5987 } qeth_ethtool_stats_keys[] = {
5988 /*  0 */{"rx skbs"},
5989         {"rx buffers"},
5990         {"tx skbs"},
5991         {"tx buffers"},
5992         {"tx skbs no packing"},
5993         {"tx buffers no packing"},
5994         {"tx skbs packing"},
5995         {"tx buffers packing"},
5996         {"tx sg skbs"},
5997         {"tx sg frags"},
5998 /* 10 */{"rx sg skbs"},
5999         {"rx sg frags"},
6000         {"rx sg page allocs"},
6001         {"tx large kbytes"},
6002         {"tx large count"},
6003         {"tx pk state ch n->p"},
6004         {"tx pk state ch p->n"},
6005         {"tx pk watermark low"},
6006         {"tx pk watermark high"},
6007         {"queue 0 buffer usage"},
6008 /* 20 */{"queue 1 buffer usage"},
6009         {"queue 2 buffer usage"},
6010         {"queue 3 buffer usage"},
6011         {"rx poll time"},
6012         {"rx poll count"},
6013         {"rx do_QDIO time"},
6014         {"rx do_QDIO count"},
6015         {"tx handler time"},
6016         {"tx handler count"},
6017         {"tx time"},
6018 /* 30 */{"tx count"},
6019         {"tx do_QDIO time"},
6020         {"tx do_QDIO count"},
6021         {"tx csum"},
6022         {"tx lin"},
6023         {"tx linfail"},
6024         {"cq handler count"},
6025         {"cq handler time"}
6026 };
6027
6028 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6029 {
6030         switch (stringset) {
6031         case ETH_SS_STATS:
6032                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6033         default:
6034                 return -EINVAL;
6035         }
6036 }
6037 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6038
6039 void qeth_core_get_ethtool_stats(struct net_device *dev,
6040                 struct ethtool_stats *stats, u64 *data)
6041 {
6042         struct qeth_card *card = dev->ml_priv;
6043         data[0] = card->stats.rx_packets -
6044                                 card->perf_stats.initial_rx_packets;
6045         data[1] = card->perf_stats.bufs_rec;
6046         data[2] = card->stats.tx_packets -
6047                                 card->perf_stats.initial_tx_packets;
6048         data[3] = card->perf_stats.bufs_sent;
6049         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6050                         - card->perf_stats.skbs_sent_pack;
6051         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6052         data[6] = card->perf_stats.skbs_sent_pack;
6053         data[7] = card->perf_stats.bufs_sent_pack;
6054         data[8] = card->perf_stats.sg_skbs_sent;
6055         data[9] = card->perf_stats.sg_frags_sent;
6056         data[10] = card->perf_stats.sg_skbs_rx;
6057         data[11] = card->perf_stats.sg_frags_rx;
6058         data[12] = card->perf_stats.sg_alloc_page_rx;
6059         data[13] = (card->perf_stats.large_send_bytes >> 10);
6060         data[14] = card->perf_stats.large_send_cnt;
6061         data[15] = card->perf_stats.sc_dp_p;
6062         data[16] = card->perf_stats.sc_p_dp;
6063         data[17] = QETH_LOW_WATERMARK_PACK;
6064         data[18] = QETH_HIGH_WATERMARK_PACK;
6065         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6066         data[20] = (card->qdio.no_out_queues > 1) ?
6067                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6068         data[21] = (card->qdio.no_out_queues > 2) ?
6069                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6070         data[22] = (card->qdio.no_out_queues > 3) ?
6071                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6072         data[23] = card->perf_stats.inbound_time;
6073         data[24] = card->perf_stats.inbound_cnt;
6074         data[25] = card->perf_stats.inbound_do_qdio_time;
6075         data[26] = card->perf_stats.inbound_do_qdio_cnt;
6076         data[27] = card->perf_stats.outbound_handler_time;
6077         data[28] = card->perf_stats.outbound_handler_cnt;
6078         data[29] = card->perf_stats.outbound_time;
6079         data[30] = card->perf_stats.outbound_cnt;
6080         data[31] = card->perf_stats.outbound_do_qdio_time;
6081         data[32] = card->perf_stats.outbound_do_qdio_cnt;
6082         data[33] = card->perf_stats.tx_csum;
6083         data[34] = card->perf_stats.tx_lin;
6084         data[35] = card->perf_stats.tx_linfail;
6085         data[36] = card->perf_stats.cq_cnt;
6086         data[37] = card->perf_stats.cq_time;
6087 }
6088 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6089
6090 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6091 {
6092         switch (stringset) {
6093         case ETH_SS_STATS:
6094                 memcpy(data, &qeth_ethtool_stats_keys,
6095                         sizeof(qeth_ethtool_stats_keys));
6096                 break;
6097         default:
6098                 WARN_ON(1);
6099                 break;
6100         }
6101 }
6102 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6103
6104 void qeth_core_get_drvinfo(struct net_device *dev,
6105                 struct ethtool_drvinfo *info)
6106 {
6107         struct qeth_card *card = dev->ml_priv;
6108
6109         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6110                 sizeof(info->driver));
6111         strlcpy(info->version, "1.0", sizeof(info->version));
6112         strlcpy(info->fw_version, card->info.mcl_level,
6113                 sizeof(info->fw_version));
6114         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6115                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6116 }
6117 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6118
6119 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6120 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
6121 /* Always advertise and support all speeds up to specified, and only one     */
6122 /* specified port type.                                                      */
6123 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6124                                 int maxspeed, int porttype)
6125 {
6126         ethtool_link_ksettings_zero_link_mode(cmd, supported);
6127         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6128         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6129
6130         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6131         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6132
6133         switch (porttype) {
6134         case PORT_TP:
6135                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6136                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6137                 break;
6138         case PORT_FIBRE:
6139                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6140                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6141                 break;
6142         default:
6143                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6144                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6145                 WARN_ON_ONCE(1);
6146         }
6147
6148         /* fallthrough from high to low, to select all legal speeds: */
6149         switch (maxspeed) {
6150         case SPEED_10000:
6151                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6152                                                      10000baseT_Full);
6153                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6154                                                      10000baseT_Full);
6155         case SPEED_1000:
6156                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6157                                                      1000baseT_Full);
6158                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6159                                                      1000baseT_Full);
6160                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6161                                                      1000baseT_Half);
6162                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6163                                                      1000baseT_Half);
6164         case SPEED_100:
6165                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6166                                                      100baseT_Full);
6167                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6168                                                      100baseT_Full);
6169                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6170                                                      100baseT_Half);
6171                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6172                                                      100baseT_Half);
6173         case SPEED_10:
6174                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6175                                                      10baseT_Full);
6176                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6177                                                      10baseT_Full);
6178                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6179                                                      10baseT_Half);
6180                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6181                                                      10baseT_Half);
6182                 /* end fallthrough */
6183                 break;
6184         default:
6185                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6186                                                      10baseT_Full);
6187                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6188                                                      10baseT_Full);
6189                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6190                                                      10baseT_Half);
6191                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6192                                                      10baseT_Half);
6193                 WARN_ON_ONCE(1);
6194         }
6195 }
6196
6197 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6198                 struct ethtool_link_ksettings *cmd)
6199 {
6200         struct qeth_card *card = netdev->ml_priv;
6201         enum qeth_link_types link_type;
6202         struct carrier_info carrier_info;
6203         int rc;
6204
6205         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6206                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6207         else
6208                 link_type = card->info.link_type;
6209
6210         cmd->base.duplex = DUPLEX_FULL;
6211         cmd->base.autoneg = AUTONEG_ENABLE;
6212         cmd->base.phy_address = 0;
6213         cmd->base.mdio_support = 0;
6214         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6215         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6216
6217         switch (link_type) {
6218         case QETH_LINK_TYPE_FAST_ETH:
6219         case QETH_LINK_TYPE_LANE_ETH100:
6220                 cmd->base.speed = SPEED_100;
6221                 cmd->base.port = PORT_TP;
6222                 break;
6223         case QETH_LINK_TYPE_GBIT_ETH:
6224         case QETH_LINK_TYPE_LANE_ETH1000:
6225                 cmd->base.speed = SPEED_1000;
6226                 cmd->base.port = PORT_FIBRE;
6227                 break;
6228         case QETH_LINK_TYPE_10GBIT_ETH:
6229                 cmd->base.speed = SPEED_10000;
6230                 cmd->base.port = PORT_FIBRE;
6231                 break;
6232         default:
6233                 cmd->base.speed = SPEED_10;
6234                 cmd->base.port = PORT_TP;
6235         }
6236         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6237
6238         /* Check if we can obtain more accurate information.     */
6239         /* If QUERY_CARD_INFO command is not supported or fails, */
6240         /* just return the heuristics that was filled above.     */
6241         if (!qeth_card_hw_is_reachable(card))
6242                 return -ENODEV;
6243         rc = qeth_query_card_info(card, &carrier_info);
6244         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6245                 return 0;
6246         if (rc) /* report error from the hardware operation */
6247                 return rc;
6248         /* on success, fill in the information got from the hardware */
6249
6250         netdev_dbg(netdev,
6251         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6252                         carrier_info.card_type,
6253                         carrier_info.port_mode,
6254                         carrier_info.port_speed);
6255
6256         /* Update attributes for which we've obtained more authoritative */
6257         /* information, leave the rest the way they where filled above.  */
6258         switch (carrier_info.card_type) {
6259         case CARD_INFO_TYPE_1G_COPPER_A:
6260         case CARD_INFO_TYPE_1G_COPPER_B:
6261                 cmd->base.port = PORT_TP;
6262                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6263                 break;
6264         case CARD_INFO_TYPE_1G_FIBRE_A:
6265         case CARD_INFO_TYPE_1G_FIBRE_B:
6266                 cmd->base.port = PORT_FIBRE;
6267                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6268                 break;
6269         case CARD_INFO_TYPE_10G_FIBRE_A:
6270         case CARD_INFO_TYPE_10G_FIBRE_B:
6271                 cmd->base.port = PORT_FIBRE;
6272                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6273                 break;
6274         }
6275
6276         switch (carrier_info.port_mode) {
6277         case CARD_INFO_PORTM_FULLDUPLEX:
6278                 cmd->base.duplex = DUPLEX_FULL;
6279                 break;
6280         case CARD_INFO_PORTM_HALFDUPLEX:
6281                 cmd->base.duplex = DUPLEX_HALF;
6282                 break;
6283         }
6284
6285         switch (carrier_info.port_speed) {
6286         case CARD_INFO_PORTS_10M:
6287                 cmd->base.speed = SPEED_10;
6288                 break;
6289         case CARD_INFO_PORTS_100M:
6290                 cmd->base.speed = SPEED_100;
6291                 break;
6292         case CARD_INFO_PORTS_1G:
6293                 cmd->base.speed = SPEED_1000;
6294                 break;
6295         case CARD_INFO_PORTS_10G:
6296                 cmd->base.speed = SPEED_10000;
6297                 break;
6298         }
6299
6300         return 0;
6301 }
6302 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6303
6304 /* Callback to handle checksum offload command reply from OSA card.
6305  * Verify that required features have been enabled on the card.
6306  * Return error in hdr->return_code as this value is checked by caller.
6307  *
6308  * Always returns zero to indicate no further messages from the OSA card.
6309  */
6310 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6311                                         struct qeth_reply *reply,
6312                                         unsigned long data)
6313 {
6314         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6315         struct qeth_checksum_cmd *chksum_cb =
6316                                 (struct qeth_checksum_cmd *)reply->param;
6317
6318         QETH_CARD_TEXT(card, 4, "chkdoccb");
6319         if (qeth_setassparms_inspect_rc(cmd))
6320                 return 0;
6321
6322         memset(chksum_cb, 0, sizeof(*chksum_cb));
6323         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6324                 chksum_cb->supported =
6325                                 cmd->data.setassparms.data.chksum.supported;
6326                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6327         }
6328         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6329                 chksum_cb->supported =
6330                                 cmd->data.setassparms.data.chksum.supported;
6331                 chksum_cb->enabled =
6332                                 cmd->data.setassparms.data.chksum.enabled;
6333                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6334                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6335         }
6336         return 0;
6337 }
6338
6339 /* Send command to OSA card and check results. */
6340 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6341                                      enum qeth_ipa_funcs ipa_func,
6342                                      __u16 cmd_code, long data,
6343                                      struct qeth_checksum_cmd *chksum_cb)
6344 {
6345         struct qeth_cmd_buffer *iob;
6346         int rc = -ENOMEM;
6347
6348         QETH_CARD_TEXT(card, 4, "chkdocmd");
6349         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6350                                        sizeof(__u32), QETH_PROT_IPV4);
6351         if (iob)
6352                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6353                                            qeth_ipa_checksum_run_cmd_cb,
6354                                            chksum_cb);
6355         return rc;
6356 }
6357
6358 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6359 {
6360         const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6361                                         QETH_IPA_CHECKSUM_UDP |
6362                                         QETH_IPA_CHECKSUM_TCP;
6363         struct qeth_checksum_cmd chksum_cb;
6364         int rc;
6365
6366         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6367                                        &chksum_cb);
6368         if (!rc) {
6369                 if ((required_features & chksum_cb.supported) !=
6370                     required_features)
6371                         rc = -EIO;
6372                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6373                          cstype == IPA_INBOUND_CHECKSUM)
6374                         dev_warn(&card->gdev->dev,
6375                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6376                                  QETH_CARD_IFNAME(card));
6377         }
6378         if (rc) {
6379                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6380                 dev_warn(&card->gdev->dev,
6381                          "Starting HW checksumming for %s failed, using SW checksumming\n",
6382                          QETH_CARD_IFNAME(card));
6383                 return rc;
6384         }
6385         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6386                                        chksum_cb.supported, &chksum_cb);
6387         if (!rc) {
6388                 if ((required_features & chksum_cb.enabled) !=
6389                     required_features)
6390                         rc = -EIO;
6391         }
6392         if (rc) {
6393                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6394                 dev_warn(&card->gdev->dev,
6395                          "Enabling HW checksumming for %s failed, using SW checksumming\n",
6396                          QETH_CARD_IFNAME(card));
6397                 return rc;
6398         }
6399
6400         dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6401                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6402         return 0;
6403 }
6404
6405 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6406 {
6407         int rc = (on) ? qeth_send_checksum_on(card, cstype)
6408                       : qeth_send_simple_setassparms(card, cstype,
6409                                                      IPA_CMD_ASS_STOP, 0);
6410         return rc ? -EIO : 0;
6411 }
6412
6413 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6414 {
6415         int rc;
6416
6417         QETH_CARD_TEXT(card, 3, "sttso");
6418
6419         if (on) {
6420                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6421                                                   IPA_CMD_ASS_START, 0);
6422                 if (rc) {
6423                         dev_warn(&card->gdev->dev,
6424                                  "Starting outbound TCP segmentation offload for %s failed\n",
6425                                  QETH_CARD_IFNAME(card));
6426                         return -EIO;
6427                 }
6428                 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6429         } else {
6430                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6431                                                   IPA_CMD_ASS_STOP, 0);
6432         }
6433         return rc;
6434 }
6435
6436 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO)
6437
6438 /**
6439  * qeth_recover_features() - Restore device features after recovery
6440  * @dev:        the recovering net_device
6441  *
6442  * Caller must hold rtnl lock.
6443  */
6444 void qeth_recover_features(struct net_device *dev)
6445 {
6446         netdev_features_t features = dev->features;
6447         struct qeth_card *card = dev->ml_priv;
6448
6449         /* force-off any feature that needs an IPA sequence.
6450          * netdev_update_features() will restart them.
6451          */
6452         dev->features &= ~QETH_HW_FEATURES;
6453         netdev_update_features(dev);
6454
6455         if (features == dev->features)
6456                 return;
6457         dev_warn(&card->gdev->dev,
6458                  "Device recovery failed to restore all offload features\n");
6459 }
6460 EXPORT_SYMBOL_GPL(qeth_recover_features);
6461
6462 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6463 {
6464         struct qeth_card *card = dev->ml_priv;
6465         netdev_features_t changed = dev->features ^ features;
6466         int rc = 0;
6467
6468         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6469         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6470
6471         if ((changed & NETIF_F_IP_CSUM)) {
6472                 rc = qeth_set_ipa_csum(card,
6473                                        features & NETIF_F_IP_CSUM ? 1 : 0,
6474                                        IPA_OUTBOUND_CHECKSUM);
6475                 if (rc)
6476                         changed ^= NETIF_F_IP_CSUM;
6477         }
6478         if ((changed & NETIF_F_RXCSUM)) {
6479                 rc = qeth_set_ipa_csum(card,
6480                                         features & NETIF_F_RXCSUM ? 1 : 0,
6481                                         IPA_INBOUND_CHECKSUM);
6482                 if (rc)
6483                         changed ^= NETIF_F_RXCSUM;
6484         }
6485         if ((changed & NETIF_F_TSO)) {
6486                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6487                 if (rc)
6488                         changed ^= NETIF_F_TSO;
6489         }
6490
6491         /* everything changed successfully? */
6492         if ((dev->features ^ features) == changed)
6493                 return 0;
6494         /* something went wrong. save changed features and return error */
6495         dev->features ^= changed;
6496         return -EIO;
6497 }
6498 EXPORT_SYMBOL_GPL(qeth_set_features);
6499
6500 netdev_features_t qeth_fix_features(struct net_device *dev,
6501                                     netdev_features_t features)
6502 {
6503         struct qeth_card *card = dev->ml_priv;
6504
6505         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6506         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6507                 features &= ~NETIF_F_IP_CSUM;
6508         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6509                 features &= ~NETIF_F_RXCSUM;
6510         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6511                 features &= ~NETIF_F_TSO;
6512         /* if the card isn't up, remove features that require hw changes */
6513         if (card->state == CARD_STATE_DOWN ||
6514             card->state == CARD_STATE_RECOVER)
6515                 features &= ~QETH_HW_FEATURES;
6516         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6517         return features;
6518 }
6519 EXPORT_SYMBOL_GPL(qeth_fix_features);
6520
6521 netdev_features_t qeth_features_check(struct sk_buff *skb,
6522                                       struct net_device *dev,
6523                                       netdev_features_t features)
6524 {
6525         /* GSO segmentation builds skbs with
6526          *      a (small) linear part for the headers, and
6527          *      page frags for the data.
6528          * Compared to a linear skb, the header-only part consumes an
6529          * additional buffer element. This reduces buffer utilization, and
6530          * hurts throughput. So compress small segments into one element.
6531          */
6532         if (netif_needs_gso(skb, features)) {
6533                 /* match skb_segment(): */
6534                 unsigned int doffset = skb->data - skb_mac_header(skb);
6535                 unsigned int hsize = skb_shinfo(skb)->gso_size;
6536                 unsigned int hroom = skb_headroom(skb);
6537
6538                 /* linearize only if resulting skb allocations are order-0: */
6539                 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6540                         features &= ~NETIF_F_SG;
6541         }
6542
6543         return vlan_features_check(skb, features);
6544 }
6545 EXPORT_SYMBOL_GPL(qeth_features_check);
6546
6547 static int __init qeth_core_init(void)
6548 {
6549         int rc;
6550
6551         pr_info("loading core functions\n");
6552         INIT_LIST_HEAD(&qeth_core_card_list.list);
6553         INIT_LIST_HEAD(&qeth_dbf_list);
6554         rwlock_init(&qeth_core_card_list.rwlock);
6555         mutex_init(&qeth_mod_mutex);
6556
6557         qeth_wq = create_singlethread_workqueue("qeth_wq");
6558
6559         rc = qeth_register_dbf_views();
6560         if (rc)
6561                 goto out_err;
6562         qeth_core_root_dev = root_device_register("qeth");
6563         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6564         if (rc)
6565                 goto register_err;
6566         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6567                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6568         if (!qeth_core_header_cache) {
6569                 rc = -ENOMEM;
6570                 goto slab_err;
6571         }
6572         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6573                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6574         if (!qeth_qdio_outbuf_cache) {
6575                 rc = -ENOMEM;
6576                 goto cqslab_err;
6577         }
6578         rc = ccw_driver_register(&qeth_ccw_driver);
6579         if (rc)
6580                 goto ccw_err;
6581         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6582         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6583         if (rc)
6584                 goto ccwgroup_err;
6585
6586         return 0;
6587
6588 ccwgroup_err:
6589         ccw_driver_unregister(&qeth_ccw_driver);
6590 ccw_err:
6591         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6592 cqslab_err:
6593         kmem_cache_destroy(qeth_core_header_cache);
6594 slab_err:
6595         root_device_unregister(qeth_core_root_dev);
6596 register_err:
6597         qeth_unregister_dbf_views();
6598 out_err:
6599         pr_err("Initializing the qeth device driver failed\n");
6600         return rc;
6601 }
6602
6603 static void __exit qeth_core_exit(void)
6604 {
6605         qeth_clear_dbf_list();
6606         destroy_workqueue(qeth_wq);
6607         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6608         ccw_driver_unregister(&qeth_ccw_driver);
6609         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6610         kmem_cache_destroy(qeth_core_header_cache);
6611         root_device_unregister(qeth_core_root_dev);
6612         qeth_unregister_dbf_views();
6613         pr_info("core functions removed\n");
6614 }
6615
6616 module_init(qeth_core_init);
6617 module_exit(qeth_core_exit);
6618 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6619 MODULE_DESCRIPTION("qeth core functions");
6620 MODULE_LICENSE("GPL");