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/compat.h>
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/log2.h>
  20 #include <linux/ip.h>
  21 #include <linux/tcp.h>
  22 #include <linux/mii.h>
  23 #include <linux/mm.h>
  24 #include <linux/kthread.h>
  25 #include <linux/slab.h>
  26 #include <linux/if_vlan.h>
  27 #include <linux/netdevice.h>
  28 #include <linux/netdev_features.h>
  29 #include <linux/skbuff.h>
  30 #include <linux/vmalloc.h>
  31
  32 #include <net/iucv/af_iucv.h>
  33 #include <net/dsfield.h>
  34
  35 #include <asm/ebcdic.h>
  36 #include <asm/chpid.h>
  37 #include <asm/io.h>
  38 #include <asm/sysinfo.h>
  39 #include <asm/diag.h>
  40 #include <asm/cio.h>
  41 #include <asm/ccwdev.h>
  42 #include <asm/cpcmd.h>
  43
  44 #include "qeth_core.h"
  45
  46 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  47         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  48         /*                   N  P  A    M  L  V                      H  */
  49         [QETH_DBF_SETUP] = {"qeth_setup",
  50                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  51         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  52                             &debug_sprintf_view, NULL},
  53         [QETH_DBF_CTRL]  = {"qeth_control",
  54                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  55 };
  56 EXPORT_SYMBOL_GPL(qeth_dbf);
  57
  58 struct kmem_cache *qeth_core_header_cache;
  59 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  60 static struct kmem_cache *qeth_qdio_outbuf_cache;
  61
  62 static struct device *qeth_core_root_dev;
  63 static struct lock_class_key qdio_out_skb_queue_key;
  64
  65 static void qeth_issue_next_read_cb(struct qeth_card *card,
  66                                     struct qeth_cmd_buffer *iob,
  67                                     unsigned int data_length);
  68 static void qeth_free_buffer_pool(struct qeth_card *);
  69 static int qeth_qdio_establish(struct qeth_card *);
  70 static void qeth_free_qdio_queues(struct qeth_card *card);
  71 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  72                 struct qeth_qdio_out_buffer *buf,
  73                 enum iucv_tx_notify notification);
  74 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
  75                                  int budget);
  76 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  77
  78 static void qeth_close_dev_handler(struct work_struct *work)
  79 {
  80         struct qeth_card *card;
  81
  82         card = container_of(work, struct qeth_card, close_dev_work);
  83         QETH_CARD_TEXT(card, 2, "cldevhdl");
  84         ccwgroup_set_offline(card->gdev);
  85 }
  86
  87 static const char *qeth_get_cardname(struct qeth_card *card)
  88 {
  89         if (IS_VM_NIC(card)) {
  90                 switch (card->info.type) {
  91                 case QETH_CARD_TYPE_OSD:
  92                         return " Virtual NIC QDIO";
  93                 case QETH_CARD_TYPE_IQD:
  94                         return " Virtual NIC Hiper";
  95                 case QETH_CARD_TYPE_OSM:
  96                         return " Virtual NIC QDIO - OSM";
  97                 case QETH_CARD_TYPE_OSX:
  98                         return " Virtual NIC QDIO - OSX";
  99                 default:
 100                         return " unknown";
 101                 }
 102         } else {
 103                 switch (card->info.type) {
 104                 case QETH_CARD_TYPE_OSD:
 105                         return " OSD Express";
 106                 case QETH_CARD_TYPE_IQD:
 107                         return " HiperSockets";
 108                 case QETH_CARD_TYPE_OSN:
 109                         return " OSN QDIO";
 110                 case QETH_CARD_TYPE_OSM:
 111                         return " OSM QDIO";
 112                 case QETH_CARD_TYPE_OSX:
 113                         return " OSX QDIO";
 114                 default:
 115                         return " unknown";
 116                 }
 117         }
 118         return " n/a";
 119 }
 120
 121 /* max length to be returned: 14 */
 122 const char *qeth_get_cardname_short(struct qeth_card *card)
 123 {
 124         if (IS_VM_NIC(card)) {
 125                 switch (card->info.type) {
 126                 case QETH_CARD_TYPE_OSD:
 127                         return "Virt.NIC QDIO";
 128                 case QETH_CARD_TYPE_IQD:
 129                         return "Virt.NIC Hiper";
 130                 case QETH_CARD_TYPE_OSM:
 131                         return "Virt.NIC OSM";
 132                 case QETH_CARD_TYPE_OSX:
 133                         return "Virt.NIC OSX";
 134                 default:
 135                         return "unknown";
 136                 }
 137         } else {
 138                 switch (card->info.type) {
 139                 case QETH_CARD_TYPE_OSD:
 140                         switch (card->info.link_type) {
 141                         case QETH_LINK_TYPE_FAST_ETH:
 142                                 return "OSD_100";
 143                         case QETH_LINK_TYPE_HSTR:
 144                                 return "HSTR";
 145                         case QETH_LINK_TYPE_GBIT_ETH:
 146                                 return "OSD_1000";
 147                         case QETH_LINK_TYPE_10GBIT_ETH:
 148                                 return "OSD_10GIG";
 149                         case QETH_LINK_TYPE_25GBIT_ETH:
 150                                 return "OSD_25GIG";
 151                         case QETH_LINK_TYPE_LANE_ETH100:
 152                                 return "OSD_FE_LANE";
 153                         case QETH_LINK_TYPE_LANE_TR:
 154                                 return "OSD_TR_LANE";
 155                         case QETH_LINK_TYPE_LANE_ETH1000:
 156                                 return "OSD_GbE_LANE";
 157                         case QETH_LINK_TYPE_LANE:
 158                                 return "OSD_ATM_LANE";
 159                         default:
 160                                 return "OSD_Express";
 161                         }
 162                 case QETH_CARD_TYPE_IQD:
 163                         return "HiperSockets";
 164                 case QETH_CARD_TYPE_OSN:
 165                         return "OSN";
 166                 case QETH_CARD_TYPE_OSM:
 167                         return "OSM_1000";
 168                 case QETH_CARD_TYPE_OSX:
 169                         return "OSX_10GIG";
 170                 default:
 171                         return "unknown";
 172                 }
 173         }
 174         return "n/a";
 175 }
 176
 177 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 178                          int clear_start_mask)
 179 {
 180         unsigned long flags;
 181
 182         spin_lock_irqsave(&card->thread_mask_lock, flags);
 183         card->thread_allowed_mask = threads;
 184         if (clear_start_mask)
 185                 card->thread_start_mask &= threads;
 186         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 187         wake_up(&card->wait_q);
 188 }
 189 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 190
 191 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 192 {
 193         unsigned long flags;
 194         int rc = 0;
 195
 196         spin_lock_irqsave(&card->thread_mask_lock, flags);
 197         rc = (card->thread_running_mask & threads);
 198         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 199         return rc;
 200 }
 201 EXPORT_SYMBOL_GPL(qeth_threads_running);
 202
 203 void qeth_clear_working_pool_list(struct qeth_card *card)
 204 {
 205         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 206
 207         QETH_CARD_TEXT(card, 5, "clwrklst");
 208         list_for_each_entry_safe(pool_entry, tmp,
 209                             &card->qdio.in_buf_pool.entry_list, list){
 210                         list_del(&pool_entry->list);
 211         }
 212 }
 213 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 214
 215 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 216 {
 217         struct qeth_buffer_pool_entry *pool_entry;
 218         void *ptr;
 219         int i, j;
 220
 221         QETH_CARD_TEXT(card, 5, "alocpool");
 222         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 223                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 224                 if (!pool_entry) {
 225                         qeth_free_buffer_pool(card);
 226                         return -ENOMEM;
 227                 }
 228                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 229                         ptr = (void *) __get_free_page(GFP_KERNEL);
 230                         if (!ptr) {
 231                                 while (j > 0)
 232                                         free_page((unsigned long)
 233                                                   pool_entry->elements[--j]);
 234                                 kfree(pool_entry);
 235                                 qeth_free_buffer_pool(card);
 236                                 return -ENOMEM;
 237                         }
 238                         pool_entry->elements[j] = ptr;
 239                 }
 240                 list_add(&pool_entry->init_list,
 241                          &card->qdio.init_pool.entry_list);
 242         }
 243         return 0;
 244 }
 245
 246 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 247 {
 248         QETH_CARD_TEXT(card, 2, "realcbp");
 249
 250         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 251         qeth_clear_working_pool_list(card);
 252         qeth_free_buffer_pool(card);
 253         card->qdio.in_buf_pool.buf_count = bufcnt;
 254         card->qdio.init_pool.buf_count = bufcnt;
 255         return qeth_alloc_buffer_pool(card);
 256 }
 257 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 258
 259 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 260 {
 261         if (!q)
 262                 return;
 263
 264         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 265         kfree(q);
 266 }
 267
 268 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 269 {
 270         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 271         int i;
 272
 273         if (!q)
 274                 return NULL;
 275
 276         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 277                 kfree(q);
 278                 return NULL;
 279         }
 280
 281         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 282                 q->bufs[i].buffer = q->qdio_bufs[i];
 283
 284         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 285         return q;
 286 }
 287
 288 static int qeth_cq_init(struct qeth_card *card)
 289 {
 290         int rc;
 291
 292         if (card->options.cq == QETH_CQ_ENABLED) {
 293                 QETH_CARD_TEXT(card, 2, "cqinit");
 294                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 295                                    QDIO_MAX_BUFFERS_PER_Q);
 296                 card->qdio.c_q->next_buf_to_init = 127;
 297                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 298                              card->qdio.no_in_queues - 1, 0,
 299                              127);
 300                 if (rc) {
 301                         QETH_CARD_TEXT_(card, 2, "1err%d", rc);
 302                         goto out;
 303                 }
 304         }
 305         rc = 0;
 306 out:
 307         return rc;
 308 }
 309
 310 static int qeth_alloc_cq(struct qeth_card *card)
 311 {
 312         int rc;
 313
 314         if (card->options.cq == QETH_CQ_ENABLED) {
 315                 int i;
 316                 struct qdio_outbuf_state *outbuf_states;
 317
 318                 QETH_CARD_TEXT(card, 2, "cqon");
 319                 card->qdio.c_q = qeth_alloc_qdio_queue();
 320                 if (!card->qdio.c_q) {
 321                         rc = -1;
 322                         goto kmsg_out;
 323                 }
 324                 card->qdio.no_in_queues = 2;
 325                 card->qdio.out_bufstates =
 326                         kcalloc(card->qdio.no_out_queues *
 327                                         QDIO_MAX_BUFFERS_PER_Q,
 328                                 sizeof(struct qdio_outbuf_state),
 329                                 GFP_KERNEL);
 330                 outbuf_states = card->qdio.out_bufstates;
 331                 if (outbuf_states == NULL) {
 332                         rc = -1;
 333                         goto free_cq_out;
 334                 }
 335                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 336                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 337                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 338                 }
 339         } else {
 340                 QETH_CARD_TEXT(card, 2, "nocq");
 341                 card->qdio.c_q = NULL;
 342                 card->qdio.no_in_queues = 1;
 343         }
 344         QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
 345         rc = 0;
 346 out:
 347         return rc;
 348 free_cq_out:
 349         qeth_free_qdio_queue(card->qdio.c_q);
 350         card->qdio.c_q = NULL;
 351 kmsg_out:
 352         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 353         goto out;
 354 }
 355
 356 static void qeth_free_cq(struct qeth_card *card)
 357 {
 358         if (card->qdio.c_q) {
 359                 --card->qdio.no_in_queues;
 360                 qeth_free_qdio_queue(card->qdio.c_q);
 361                 card->qdio.c_q = NULL;
 362         }
 363         kfree(card->qdio.out_bufstates);
 364         card->qdio.out_bufstates = NULL;
 365 }
 366
 367 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 368                                                         int delayed)
 369 {
 370         enum iucv_tx_notify n;
 371
 372         switch (sbalf15) {
 373         case 0:
 374                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 375                 break;
 376         case 4:
 377         case 16:
 378         case 17:
 379         case 18:
 380                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 381                         TX_NOTIFY_UNREACHABLE;
 382                 break;
 383         default:
 384                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 385                         TX_NOTIFY_GENERALERROR;
 386                 break;
 387         }
 388
 389         return n;
 390 }
 391
 392 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
 393                                          int forced_cleanup)
 394 {
 395         if (q->card->options.cq != QETH_CQ_ENABLED)
 396                 return;
 397
 398         if (q->bufs[bidx]->next_pending != NULL) {
 399                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 400                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 401
 402                 while (c) {
 403                         if (forced_cleanup ||
 404                             atomic_read(&c->state) ==
 405                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 406                                 struct qeth_qdio_out_buffer *f = c;
 407                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 408                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 409                                 /* release here to avoid interleaving between
 410                                    outbound tasklet and inbound tasklet
 411                                    regarding notifications and lifecycle */
 412                                 qeth_tx_complete_buf(c, forced_cleanup, 0);
 413
 414                                 c = f->next_pending;
 415                                 WARN_ON_ONCE(head->next_pending != f);
 416                                 head->next_pending = c;
 417                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 418                         } else {
 419                                 head = c;
 420                                 c = c->next_pending;
 421                         }
 422
 423                 }
 424         }
 425         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 426                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 427                 /* for recovery situations */
 428                 qeth_init_qdio_out_buf(q, bidx);
 429                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 430         }
 431 }
 432
 433
 434 static void qeth_qdio_handle_aob(struct qeth_card *card,
 435                                  unsigned long phys_aob_addr)
 436 {
 437         struct qaob *aob;
 438         struct qeth_qdio_out_buffer *buffer;
 439         enum iucv_tx_notify notification;
 440         unsigned int i;
 441
 442         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 443         QETH_CARD_TEXT(card, 5, "haob");
 444         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 445         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 446         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 447
 448         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 449                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 450                 notification = TX_NOTIFY_OK;
 451         } else {
 452                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 453                                                         QETH_QDIO_BUF_PENDING);
 454                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 455                 notification = TX_NOTIFY_DELAYED_OK;
 456         }
 457
 458         if (aob->aorc != 0)  {
 459                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 460                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 461         }
 462         qeth_notify_skbs(buffer->q, buffer, notification);
 463
 464         /* Free dangling allocations. The attached skbs are handled by
 465          * qeth_cleanup_handled_pending().
 466          */
 467         for (i = 0;
 468              i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
 469              i++) {
 470                 if (aob->sba[i] && buffer->is_header[i])
 471                         kmem_cache_free(qeth_core_header_cache,
 472                                         (void *) aob->sba[i]);
 473         }
 474         atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
 475
 476         qdio_release_aob(aob);
 477 }
 478
 479 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 480 {
 481         return card->options.cq == QETH_CQ_ENABLED &&
 482             card->qdio.c_q != NULL &&
 483             queue != 0 &&
 484             queue == card->qdio.no_in_queues - 1;
 485 }
 486
 487 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
 488                            void *data)
 489 {
 490         ccw->cmd_code = cmd_code;
 491         ccw->flags = flags | CCW_FLAG_SLI;
 492         ccw->count = len;
 493         ccw->cda = (__u32) __pa(data);
 494 }
 495
 496 static int __qeth_issue_next_read(struct qeth_card *card)
 497 {
 498         struct qeth_cmd_buffer *iob = card->read_cmd;
 499         struct qeth_channel *channel = iob->channel;
 500         struct ccw1 *ccw = __ccw_from_cmd(iob);
 501         int rc;
 502
 503         QETH_CARD_TEXT(card, 5, "issnxrd");
 504         if (channel->state != CH_STATE_UP)
 505                 return -EIO;
 506
 507         memset(iob->data, 0, iob->length);
 508         qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
 509         iob->callback = qeth_issue_next_read_cb;
 510         /* keep the cmd alive after completion: */
 511         qeth_get_cmd(iob);
 512
 513         QETH_CARD_TEXT(card, 6, "noirqpnd");
 514         rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
 515         if (!rc) {
 516                 channel->active_cmd = iob;
 517         } else {
 518                 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
 519                                  rc, CARD_DEVID(card));
 520                 qeth_unlock_channel(card, channel);
 521                 qeth_put_cmd(iob);
 522                 card->read_or_write_problem = 1;
 523                 qeth_schedule_recovery(card);
 524         }
 525         return rc;
 526 }
 527
 528 static int qeth_issue_next_read(struct qeth_card *card)
 529 {
 530         int ret;
 531
 532         spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 533         ret = __qeth_issue_next_read(card);
 534         spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 535
 536         return ret;
 537 }
 538
 539 static void qeth_enqueue_cmd(struct qeth_card *card,
 540                              struct qeth_cmd_buffer *iob)
 541 {
 542         spin_lock_irq(&card->lock);
 543         list_add_tail(&iob->list, &card->cmd_waiter_list);
 544         spin_unlock_irq(&card->lock);
 545 }
 546
 547 static void qeth_dequeue_cmd(struct qeth_card *card,
 548                              struct qeth_cmd_buffer *iob)
 549 {
 550         spin_lock_irq(&card->lock);
 551         list_del(&iob->list);
 552         spin_unlock_irq(&card->lock);
 553 }
 554
 555 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
 556 {
 557         iob->rc = reason;
 558         complete(&iob->done);
 559 }
 560 EXPORT_SYMBOL_GPL(qeth_notify_cmd);
 561
 562 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 563                 struct qeth_card *card)
 564 {
 565         const char *ipa_name;
 566         int com = cmd->hdr.command;
 567         ipa_name = qeth_get_ipa_cmd_name(com);
 568
 569         if (rc)
 570                 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
 571                                  ipa_name, com, CARD_DEVID(card), rc,
 572                                  qeth_get_ipa_msg(rc));
 573         else
 574                 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
 575                                  ipa_name, com, CARD_DEVID(card));
 576 }
 577
 578 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 579                                                 struct qeth_ipa_cmd *cmd)
 580 {
 581         QETH_CARD_TEXT(card, 5, "chkipad");
 582
 583         if (IS_IPA_REPLY(cmd)) {
 584                 if (cmd->hdr.command != IPA_CMD_SETCCID &&
 585                     cmd->hdr.command != IPA_CMD_DELCCID &&
 586                     cmd->hdr.command != IPA_CMD_MODCCID &&
 587                     cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 588                         qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
 589                 return cmd;
 590         }
 591
 592         /* handle unsolicited event: */
 593         switch (cmd->hdr.command) {
 594         case IPA_CMD_STOPLAN:
 595                 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
 596                         dev_err(&card->gdev->dev,
 597                                 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
 598                                 QETH_CARD_IFNAME(card));
 599                         schedule_work(&card->close_dev_work);
 600                 } else {
 601                         dev_warn(&card->gdev->dev,
 602                                  "The link for interface %s on CHPID 0x%X failed\n",
 603                                  QETH_CARD_IFNAME(card), card->info.chpid);
 604                         qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
 605                         netif_carrier_off(card->dev);
 606                 }
 607                 return NULL;
 608         case IPA_CMD_STARTLAN:
 609                 dev_info(&card->gdev->dev,
 610                          "The link for %s on CHPID 0x%X has been restored\n",
 611                          QETH_CARD_IFNAME(card), card->info.chpid);
 612                 if (card->info.hwtrap)
 613                         card->info.hwtrap = 2;
 614                 qeth_schedule_recovery(card);
 615                 return NULL;
 616         case IPA_CMD_SETBRIDGEPORT_IQD:
 617         case IPA_CMD_SETBRIDGEPORT_OSA:
 618         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 619                 if (card->discipline->control_event_handler(card, cmd))
 620                         return cmd;
 621                 return NULL;
 622         case IPA_CMD_MODCCID:
 623                 return cmd;
 624         case IPA_CMD_REGISTER_LOCAL_ADDR:
 625                 QETH_CARD_TEXT(card, 3, "irla");
 626                 return NULL;
 627         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 628                 QETH_CARD_TEXT(card, 3, "urla");
 629                 return NULL;
 630         default:
 631                 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
 632                 return cmd;
 633         }
 634 }
 635
 636 void qeth_clear_ipacmd_list(struct qeth_card *card)
 637 {
 638         struct qeth_cmd_buffer *iob;
 639         unsigned long flags;
 640
 641         QETH_CARD_TEXT(card, 4, "clipalst");
 642
 643         spin_lock_irqsave(&card->lock, flags);
 644         list_for_each_entry(iob, &card->cmd_waiter_list, list)
 645                 qeth_notify_cmd(iob, -EIO);
 646         spin_unlock_irqrestore(&card->lock, flags);
 647 }
 648 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 649
 650 static int qeth_check_idx_response(struct qeth_card *card,
 651         unsigned char *buffer)
 652 {
 653         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 654         if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
 655                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
 656                                  buffer[4]);
 657                 QETH_CARD_TEXT(card, 2, "ckidxres");
 658                 QETH_CARD_TEXT(card, 2, " idxterm");
 659                 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
 660                 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
 661                     buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
 662                         dev_err(&card->gdev->dev,
 663                                 "The device does not support the configured transport mode\n");
 664                         return -EPROTONOSUPPORT;
 665                 }
 666                 return -EIO;
 667         }
 668         return 0;
 669 }
 670
 671 void qeth_put_cmd(struct qeth_cmd_buffer *iob)
 672 {
 673         if (refcount_dec_and_test(&iob->ref_count)) {
 674                 kfree(iob->data);
 675                 kfree(iob);
 676         }
 677 }
 678 EXPORT_SYMBOL_GPL(qeth_put_cmd);
 679
 680 static void qeth_release_buffer_cb(struct qeth_card *card,
 681                                    struct qeth_cmd_buffer *iob,
 682                                    unsigned int data_length)
 683 {
 684         qeth_put_cmd(iob);
 685 }
 686
 687 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
 688 {
 689         qeth_notify_cmd(iob, rc);
 690         qeth_put_cmd(iob);
 691 }
 692
 693 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
 694                                        unsigned int length, unsigned int ccws,
 695                                        long timeout)
 696 {
 697         struct qeth_cmd_buffer *iob;
 698
 699         if (length > QETH_BUFSIZE)
 700                 return NULL;
 701
 702         iob = kzalloc(sizeof(*iob), GFP_KERNEL);
 703         if (!iob)
 704                 return NULL;
 705
 706         iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
 707                             GFP_KERNEL | GFP_DMA);
 708         if (!iob->data) {
 709                 kfree(iob);
 710                 return NULL;
 711         }
 712
 713         init_completion(&iob->done);
 714         spin_lock_init(&iob->lock);
 715         INIT_LIST_HEAD(&iob->list);
 716         refcount_set(&iob->ref_count, 1);
 717         iob->channel = channel;
 718         iob->timeout = timeout;
 719         iob->length = length;
 720         return iob;
 721 }
 722 EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
 723
 724 static void qeth_issue_next_read_cb(struct qeth_card *card,
 725                                     struct qeth_cmd_buffer *iob,
 726                                     unsigned int data_length)
 727 {
 728         struct qeth_cmd_buffer *request = NULL;
 729         struct qeth_ipa_cmd *cmd = NULL;
 730         struct qeth_reply *reply = NULL;
 731         struct qeth_cmd_buffer *tmp;
 732         unsigned long flags;
 733         int rc = 0;
 734
 735         QETH_CARD_TEXT(card, 4, "sndctlcb");
 736         rc = qeth_check_idx_response(card, iob->data);
 737         switch (rc) {
 738         case 0:
 739                 break;
 740         case -EIO:
 741                 qeth_schedule_recovery(card);
 742                 /* fall through */
 743         default:
 744                 qeth_clear_ipacmd_list(card);
 745                 goto out;
 746         }
 747
 748         cmd = __ipa_reply(iob);
 749         if (cmd) {
 750                 cmd = qeth_check_ipa_data(card, cmd);
 751                 if (!cmd)
 752                         goto out;
 753                 if (IS_OSN(card) && card->osn_info.assist_cb &&
 754                     cmd->hdr.command != IPA_CMD_STARTLAN) {
 755                         card->osn_info.assist_cb(card->dev, cmd);
 756                         goto out;
 757                 }
 758         }
 759
 760         /* match against pending cmd requests */
 761         spin_lock_irqsave(&card->lock, flags);
 762         list_for_each_entry(tmp, &card->cmd_waiter_list, list) {
 763                 if (tmp->match && tmp->match(tmp, iob)) {
 764                         request = tmp;
 765                         /* take the object outside the lock */
 766                         qeth_get_cmd(request);
 767                         break;
 768                 }
 769         }
 770         spin_unlock_irqrestore(&card->lock, flags);
 771
 772         if (!request)
 773                 goto out;
 774
 775         reply = &request->reply;
 776         if (!reply->callback) {
 777                 rc = 0;
 778                 goto no_callback;
 779         }
 780
 781         spin_lock_irqsave(&request->lock, flags);
 782         if (request->rc)
 783                 /* Bail out when the requestor has already left: */
 784                 rc = request->rc;
 785         else
 786                 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
 787                                                         (unsigned long)iob);
 788         spin_unlock_irqrestore(&request->lock, flags);
 789
 790 no_callback:
 791         if (rc <= 0)
 792                 qeth_notify_cmd(request, rc);
 793         qeth_put_cmd(request);
 794 out:
 795         memcpy(&card->seqno.pdu_hdr_ack,
 796                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 797                 QETH_SEQ_NO_LENGTH);
 798         qeth_put_cmd(iob);
 799         __qeth_issue_next_read(card);
 800 }
 801
 802 static int qeth_set_thread_start_bit(struct qeth_card *card,
 803                 unsigned long thread)
 804 {
 805         unsigned long flags;
 806
 807         spin_lock_irqsave(&card->thread_mask_lock, flags);
 808         if (!(card->thread_allowed_mask & thread) ||
 809               (card->thread_start_mask & thread)) {
 810                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 811                 return -EPERM;
 812         }
 813         card->thread_start_mask |= thread;
 814         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 815         return 0;
 816 }
 817
 818 static void qeth_clear_thread_start_bit(struct qeth_card *card,
 819                                         unsigned long thread)
 820 {
 821         unsigned long flags;
 822
 823         spin_lock_irqsave(&card->thread_mask_lock, flags);
 824         card->thread_start_mask &= ~thread;
 825         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 826         wake_up(&card->wait_q);
 827 }
 828
 829 static void qeth_clear_thread_running_bit(struct qeth_card *card,
 830                                           unsigned long thread)
 831 {
 832         unsigned long flags;
 833
 834         spin_lock_irqsave(&card->thread_mask_lock, flags);
 835         card->thread_running_mask &= ~thread;
 836         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 837         wake_up_all(&card->wait_q);
 838 }
 839
 840 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 841 {
 842         unsigned long flags;
 843         int rc = 0;
 844
 845         spin_lock_irqsave(&card->thread_mask_lock, flags);
 846         if (card->thread_start_mask & thread) {
 847                 if ((card->thread_allowed_mask & thread) &&
 848                     !(card->thread_running_mask & thread)) {
 849                         rc = 1;
 850                         card->thread_start_mask &= ~thread;
 851                         card->thread_running_mask |= thread;
 852                 } else
 853                         rc = -EPERM;
 854         }
 855         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 856         return rc;
 857 }
 858
 859 static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 860 {
 861         int rc = 0;
 862
 863         wait_event(card->wait_q,
 864                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 865         return rc;
 866 }
 867
 868 void qeth_schedule_recovery(struct qeth_card *card)
 869 {
 870         QETH_CARD_TEXT(card, 2, "startrec");
 871         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 872                 schedule_work(&card->kernel_thread_starter);
 873 }
 874
 875 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
 876                             struct irb *irb)
 877 {
 878         int dstat, cstat;
 879         char *sense;
 880
 881         sense = (char *) irb->ecw;
 882         cstat = irb->scsw.cmd.cstat;
 883         dstat = irb->scsw.cmd.dstat;
 884
 885         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 886                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 887                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 888                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 889                 dev_warn(&cdev->dev, "The qeth device driver "
 890                         "failed to recover an error on the device\n");
 891                 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
 892                                  CCW_DEVID(cdev), dstat, cstat);
 893                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 894                                 16, 1, irb, 64, 1);
 895                 return -EIO;
 896         }
 897
 898         if (dstat & DEV_STAT_UNIT_CHECK) {
 899                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 900                     SENSE_RESETTING_EVENT_FLAG) {
 901                         QETH_CARD_TEXT(card, 2, "REVIND");
 902                         return -EIO;
 903                 }
 904                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 905                     SENSE_COMMAND_REJECT_FLAG) {
 906                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 907                         return -EIO;
 908                 }
 909                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 910                         QETH_CARD_TEXT(card, 2, "AFFE");
 911                         return -EIO;
 912                 }
 913                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 914                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 915                         return 0;
 916                 }
 917                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 918                         return -EIO;
 919         }
 920         return 0;
 921 }
 922
 923 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
 924                                 struct irb *irb)
 925 {
 926         if (!IS_ERR(irb))
 927                 return 0;
 928
 929         switch (PTR_ERR(irb)) {
 930         case -EIO:
 931                 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
 932                                  CCW_DEVID(cdev));
 933                 QETH_CARD_TEXT(card, 2, "ckirberr");
 934                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 935                 return -EIO;
 936         case -ETIMEDOUT:
 937                 dev_warn(&cdev->dev, "A hardware operation timed out"
 938                         " on the device\n");
 939                 QETH_CARD_TEXT(card, 2, "ckirberr");
 940                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 941                 return -ETIMEDOUT;
 942         default:
 943                 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
 944                                  PTR_ERR(irb), CCW_DEVID(cdev));
 945                 QETH_CARD_TEXT(card, 2, "ckirberr");
 946                 QETH_CARD_TEXT(card, 2, "  rc???");
 947                 return PTR_ERR(irb);
 948         }
 949 }
 950
 951 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 952                 struct irb *irb)
 953 {
 954         int rc;
 955         int cstat, dstat;
 956         struct qeth_cmd_buffer *iob = NULL;
 957         struct ccwgroup_device *gdev;
 958         struct qeth_channel *channel;
 959         struct qeth_card *card;
 960
 961         /* while we hold the ccwdev lock, this stays valid: */
 962         gdev = dev_get_drvdata(&cdev->dev);
 963         card = dev_get_drvdata(&gdev->dev);
 964
 965         QETH_CARD_TEXT(card, 5, "irq");
 966
 967         if (card->read.ccwdev == cdev) {
 968                 channel = &card->read;
 969                 QETH_CARD_TEXT(card, 5, "read");
 970         } else if (card->write.ccwdev == cdev) {
 971                 channel = &card->write;
 972                 QETH_CARD_TEXT(card, 5, "write");
 973         } else {
 974                 channel = &card->data;
 975                 QETH_CARD_TEXT(card, 5, "data");
 976         }
 977
 978         if (intparm == 0) {
 979                 QETH_CARD_TEXT(card, 5, "irqunsol");
 980         } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
 981                 QETH_CARD_TEXT(card, 5, "irqunexp");
 982
 983                 dev_err(&cdev->dev,
 984                         "Received IRQ with intparm %lx, expected %px\n",
 985                         intparm, channel->active_cmd);
 986                 if (channel->active_cmd)
 987                         qeth_cancel_cmd(channel->active_cmd, -EIO);
 988         } else {
 989                 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
 990         }
 991
 992         channel->active_cmd = NULL;
 993         qeth_unlock_channel(card, channel);
 994
 995         rc = qeth_check_irb_error(card, cdev, irb);
 996         if (rc) {
 997                 /* IO was terminated, free its resources. */
 998                 if (iob)
 999                         qeth_cancel_cmd(iob, rc);
1000                 return;
1001         }
1002
1003         if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1004                 channel->state = CH_STATE_STOPPED;
1005                 wake_up(&card->wait_q);
1006         }
1007
1008         if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1009                 channel->state = CH_STATE_HALTED;
1010                 wake_up(&card->wait_q);
1011         }
1012
1013         if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1014                                           SCSW_FCTL_HALT_FUNC))) {
1015                 qeth_cancel_cmd(iob, -ECANCELED);
1016                 iob = NULL;
1017         }
1018
1019         cstat = irb->scsw.cmd.cstat;
1020         dstat = irb->scsw.cmd.dstat;
1021
1022         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1023             (dstat & DEV_STAT_UNIT_CHECK) ||
1024             (cstat)) {
1025                 if (irb->esw.esw0.erw.cons) {
1026                         dev_warn(&channel->ccwdev->dev,
1027                                 "The qeth device driver failed to recover "
1028                                 "an error on the device\n");
1029                         QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1030                                          CCW_DEVID(channel->ccwdev), cstat,
1031                                          dstat);
1032                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1033                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1034                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1035                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1036                 }
1037
1038                 rc = qeth_get_problem(card, cdev, irb);
1039                 if (rc) {
1040                         card->read_or_write_problem = 1;
1041                         if (iob)
1042                                 qeth_cancel_cmd(iob, rc);
1043                         qeth_clear_ipacmd_list(card);
1044                         qeth_schedule_recovery(card);
1045                         return;
1046                 }
1047         }
1048
1049         if (iob) {
1050                 /* sanity check: */
1051                 if (irb->scsw.cmd.count > iob->length) {
1052                         qeth_cancel_cmd(iob, -EIO);
1053                         return;
1054                 }
1055                 if (iob->callback)
1056                         iob->callback(card, iob,
1057                                       iob->length - irb->scsw.cmd.count);
1058         }
1059 }
1060
1061 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1062                 struct qeth_qdio_out_buffer *buf,
1063                 enum iucv_tx_notify notification)
1064 {
1065         struct sk_buff *skb;
1066
1067         skb_queue_walk(&buf->skb_list, skb) {
1068                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1069                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1070                 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1071                         iucv_sk(skb->sk)->sk_txnotify(skb, notification);
1072         }
1073 }
1074
1075 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
1076                                  int budget)
1077 {
1078         struct qeth_qdio_out_q *queue = buf->q;
1079         struct sk_buff *skb;
1080
1081         /* release may never happen from within CQ tasklet scope */
1082         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1083
1084         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1085                 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR);
1086
1087         /* Empty buffer? */
1088         if (buf->next_element_to_fill == 0)
1089                 return;
1090
1091         QETH_TXQ_STAT_INC(queue, bufs);
1092         QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1093         while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1094                 unsigned int bytes = qdisc_pkt_len(skb);
1095                 bool is_tso = skb_is_gso(skb);
1096                 unsigned int packets;
1097
1098                 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1099                 if (error) {
1100                         QETH_TXQ_STAT_ADD(queue, tx_errors, packets);
1101                 } else {
1102                         QETH_TXQ_STAT_ADD(queue, tx_packets, packets);
1103                         QETH_TXQ_STAT_ADD(queue, tx_bytes, bytes);
1104                         if (skb->ip_summed == CHECKSUM_PARTIAL)
1105                                 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1106                         if (skb_is_nonlinear(skb))
1107                                 QETH_TXQ_STAT_INC(queue, skbs_sg);
1108                         if (is_tso) {
1109                                 QETH_TXQ_STAT_INC(queue, skbs_tso);
1110                                 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1111                         }
1112                 }
1113
1114                 napi_consume_skb(skb, budget);
1115         }
1116 }
1117
1118 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1119                                      struct qeth_qdio_out_buffer *buf,
1120                                      bool error, int budget)
1121 {
1122         int i;
1123
1124         /* is PCI flag set on buffer? */
1125         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1126                 atomic_dec(&queue->set_pci_flags_count);
1127
1128         qeth_tx_complete_buf(buf, error, budget);
1129
1130         for (i = 0; i < queue->max_elements; ++i) {
1131                 if (buf->buffer->element[i].addr && buf->is_header[i])
1132                         kmem_cache_free(qeth_core_header_cache,
1133                                 buf->buffer->element[i].addr);
1134                 buf->is_header[i] = 0;
1135         }
1136
1137         qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1138         buf->next_element_to_fill = 0;
1139         buf->bytes = 0;
1140         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1141 }
1142
1143 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1144 {
1145         int j;
1146
1147         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1148                 if (!q->bufs[j])
1149                         continue;
1150                 qeth_cleanup_handled_pending(q, j, 1);
1151                 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1152                 if (free) {
1153                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1154                         q->bufs[j] = NULL;
1155                 }
1156         }
1157 }
1158
1159 void qeth_drain_output_queues(struct qeth_card *card)
1160 {
1161         int i;
1162
1163         QETH_CARD_TEXT(card, 2, "clearqdbf");
1164         /* clear outbound buffers to free skbs */
1165         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1166                 if (card->qdio.out_qs[i])
1167                         qeth_drain_output_queue(card->qdio.out_qs[i], false);
1168         }
1169 }
1170 EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
1171
1172 static void qeth_free_buffer_pool(struct qeth_card *card)
1173 {
1174         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1175         int i = 0;
1176         list_for_each_entry_safe(pool_entry, tmp,
1177                                  &card->qdio.init_pool.entry_list, init_list){
1178                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1179                         free_page((unsigned long)pool_entry->elements[i]);
1180                 list_del(&pool_entry->init_list);
1181                 kfree(pool_entry);
1182         }
1183 }
1184
1185 static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1186 {
1187         unsigned int count = single ? 1 : card->dev->num_tx_queues;
1188         int rc;
1189
1190         rtnl_lock();
1191         rc = netif_set_real_num_tx_queues(card->dev, count);
1192         rtnl_unlock();
1193
1194         if (rc)
1195                 return rc;
1196
1197         if (card->qdio.no_out_queues == count)
1198                 return 0;
1199
1200         if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1201                 qeth_free_qdio_queues(card);
1202
1203         if (count == 1)
1204                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1205
1206         card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE;
1207         card->qdio.no_out_queues = count;
1208         return 0;
1209 }
1210
1211 static int qeth_update_from_chp_desc(struct qeth_card *card)
1212 {
1213         struct ccw_device *ccwdev;
1214         struct channel_path_desc_fmt0 *chp_dsc;
1215         int rc = 0;
1216
1217         QETH_CARD_TEXT(card, 2, "chp_desc");
1218
1219         ccwdev = card->data.ccwdev;
1220         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1221         if (!chp_dsc)
1222                 return -ENOMEM;
1223
1224         card->info.func_level = 0x4100 + chp_dsc->desc;
1225
1226         if (IS_OSD(card) || IS_OSX(card))
1227                 /* CHPP field bit 6 == 1 -> single queue */
1228                 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1229
1230         kfree(chp_dsc);
1231         QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1232         QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1233         return rc;
1234 }
1235
1236 static void qeth_init_qdio_info(struct qeth_card *card)
1237 {
1238         QETH_CARD_TEXT(card, 4, "intqdinf");
1239         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1240         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1241         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1242
1243         /* inbound */
1244         card->qdio.no_in_queues = 1;
1245         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1246         if (IS_IQD(card))
1247                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1248         else
1249                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1250         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1251         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1252         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1253 }
1254
1255 static void qeth_set_initial_options(struct qeth_card *card)
1256 {
1257         card->options.route4.type = NO_ROUTER;
1258         card->options.route6.type = NO_ROUTER;
1259         card->options.rx_sg_cb = QETH_RX_SG_CB;
1260         card->options.isolation = ISOLATION_MODE_NONE;
1261         card->options.cq = QETH_CQ_DISABLED;
1262         card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1263 }
1264
1265 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1266 {
1267         unsigned long flags;
1268         int rc = 0;
1269
1270         spin_lock_irqsave(&card->thread_mask_lock, flags);
1271         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1272                         (u8) card->thread_start_mask,
1273                         (u8) card->thread_allowed_mask,
1274                         (u8) card->thread_running_mask);
1275         rc = (card->thread_start_mask & thread);
1276         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1277         return rc;
1278 }
1279
1280 static int qeth_do_reset(void *data);
1281 static void qeth_start_kernel_thread(struct work_struct *work)
1282 {
1283         struct task_struct *ts;
1284         struct qeth_card *card = container_of(work, struct qeth_card,
1285                                         kernel_thread_starter);
1286         QETH_CARD_TEXT(card , 2, "strthrd");
1287
1288         if (card->read.state != CH_STATE_UP &&
1289             card->write.state != CH_STATE_UP)
1290                 return;
1291         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1292                 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1293                 if (IS_ERR(ts)) {
1294                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1295                         qeth_clear_thread_running_bit(card,
1296                                 QETH_RECOVER_THREAD);
1297                 }
1298         }
1299 }
1300
1301 static void qeth_buffer_reclaim_work(struct work_struct *);
1302 static void qeth_setup_card(struct qeth_card *card)
1303 {
1304         QETH_CARD_TEXT(card, 2, "setupcrd");
1305
1306         card->info.type = CARD_RDEV(card)->id.driver_info;
1307         card->state = CARD_STATE_DOWN;
1308         spin_lock_init(&card->lock);
1309         spin_lock_init(&card->thread_mask_lock);
1310         mutex_init(&card->conf_mutex);
1311         mutex_init(&card->discipline_mutex);
1312         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1313         INIT_LIST_HEAD(&card->cmd_waiter_list);
1314         init_waitqueue_head(&card->wait_q);
1315         qeth_set_initial_options(card);
1316         /* IP address takeover */
1317         INIT_LIST_HEAD(&card->ipato.entries);
1318         qeth_init_qdio_info(card);
1319         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1320         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1321 }
1322
1323 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1324 {
1325         struct qeth_card *card = container_of(slr, struct qeth_card,
1326                                         qeth_service_level);
1327         if (card->info.mcl_level[0])
1328                 seq_printf(m, "qeth: %s firmware level %s\n",
1329                         CARD_BUS_ID(card), card->info.mcl_level);
1330 }
1331
1332 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1333 {
1334         struct qeth_card *card;
1335
1336         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1337         card = kzalloc(sizeof(*card), GFP_KERNEL);
1338         if (!card)
1339                 goto out;
1340         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1341
1342         card->gdev = gdev;
1343         dev_set_drvdata(&gdev->dev, card);
1344         CARD_RDEV(card) = gdev->cdev[0];
1345         CARD_WDEV(card) = gdev->cdev[1];
1346         CARD_DDEV(card) = gdev->cdev[2];
1347
1348         card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1349                                                  dev_name(&gdev->dev));
1350         if (!card->event_wq)
1351                 goto out_wq;
1352
1353         card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1354         if (!card->read_cmd)
1355                 goto out_read_cmd;
1356
1357         card->qeth_service_level.seq_print = qeth_core_sl_print;
1358         register_service_level(&card->qeth_service_level);
1359         return card;
1360
1361 out_read_cmd:
1362         destroy_workqueue(card->event_wq);
1363 out_wq:
1364         dev_set_drvdata(&gdev->dev, NULL);
1365         kfree(card);
1366 out:
1367         return NULL;
1368 }
1369
1370 static int qeth_clear_channel(struct qeth_card *card,
1371                               struct qeth_channel *channel)
1372 {
1373         int rc;
1374
1375         QETH_CARD_TEXT(card, 3, "clearch");
1376         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1377         rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1378         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1379
1380         if (rc)
1381                 return rc;
1382         rc = wait_event_interruptible_timeout(card->wait_q,
1383                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1384         if (rc == -ERESTARTSYS)
1385                 return rc;
1386         if (channel->state != CH_STATE_STOPPED)
1387                 return -ETIME;
1388         channel->state = CH_STATE_DOWN;
1389         return 0;
1390 }
1391
1392 static int qeth_halt_channel(struct qeth_card *card,
1393                              struct qeth_channel *channel)
1394 {
1395         int rc;
1396
1397         QETH_CARD_TEXT(card, 3, "haltch");
1398         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1399         rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1400         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1401
1402         if (rc)
1403                 return rc;
1404         rc = wait_event_interruptible_timeout(card->wait_q,
1405                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1406         if (rc == -ERESTARTSYS)
1407                 return rc;
1408         if (channel->state != CH_STATE_HALTED)
1409                 return -ETIME;
1410         return 0;
1411 }
1412
1413 int qeth_stop_channel(struct qeth_channel *channel)
1414 {
1415         struct ccw_device *cdev = channel->ccwdev;
1416         int rc;
1417
1418         rc = ccw_device_set_offline(cdev);
1419
1420         spin_lock_irq(get_ccwdev_lock(cdev));
1421         if (channel->active_cmd) {
1422                 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1423                         channel->active_cmd);
1424                 channel->active_cmd = NULL;
1425         }
1426         cdev->handler = NULL;
1427         spin_unlock_irq(get_ccwdev_lock(cdev));
1428
1429         return rc;
1430 }
1431 EXPORT_SYMBOL_GPL(qeth_stop_channel);
1432
1433 static int qeth_start_channel(struct qeth_channel *channel)
1434 {
1435         struct ccw_device *cdev = channel->ccwdev;
1436         int rc;
1437
1438         channel->state = CH_STATE_DOWN;
1439         atomic_set(&channel->irq_pending, 0);
1440
1441         spin_lock_irq(get_ccwdev_lock(cdev));
1442         cdev->handler = qeth_irq;
1443         spin_unlock_irq(get_ccwdev_lock(cdev));
1444
1445         rc = ccw_device_set_online(cdev);
1446         if (rc)
1447                 goto err;
1448
1449         return 0;
1450
1451 err:
1452         spin_lock_irq(get_ccwdev_lock(cdev));
1453         cdev->handler = NULL;
1454         spin_unlock_irq(get_ccwdev_lock(cdev));
1455         return rc;
1456 }
1457
1458 static int qeth_halt_channels(struct qeth_card *card)
1459 {
1460         int rc1 = 0, rc2 = 0, rc3 = 0;
1461
1462         QETH_CARD_TEXT(card, 3, "haltchs");
1463         rc1 = qeth_halt_channel(card, &card->read);
1464         rc2 = qeth_halt_channel(card, &card->write);
1465         rc3 = qeth_halt_channel(card, &card->data);
1466         if (rc1)
1467                 return rc1;
1468         if (rc2)
1469                 return rc2;
1470         return rc3;
1471 }
1472
1473 static int qeth_clear_channels(struct qeth_card *card)
1474 {
1475         int rc1 = 0, rc2 = 0, rc3 = 0;
1476
1477         QETH_CARD_TEXT(card, 3, "clearchs");
1478         rc1 = qeth_clear_channel(card, &card->read);
1479         rc2 = qeth_clear_channel(card, &card->write);
1480         rc3 = qeth_clear_channel(card, &card->data);
1481         if (rc1)
1482                 return rc1;
1483         if (rc2)
1484                 return rc2;
1485         return rc3;
1486 }
1487
1488 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1489 {
1490         int rc = 0;
1491
1492         QETH_CARD_TEXT(card, 3, "clhacrd");
1493
1494         if (halt)
1495                 rc = qeth_halt_channels(card);
1496         if (rc)
1497                 return rc;
1498         return qeth_clear_channels(card);
1499 }
1500
1501 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1502 {
1503         int rc = 0;
1504
1505         QETH_CARD_TEXT(card, 3, "qdioclr");
1506         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1507                 QETH_QDIO_CLEANING)) {
1508         case QETH_QDIO_ESTABLISHED:
1509                 if (IS_IQD(card))
1510                         rc = qdio_shutdown(CARD_DDEV(card),
1511                                 QDIO_FLAG_CLEANUP_USING_HALT);
1512                 else
1513                         rc = qdio_shutdown(CARD_DDEV(card),
1514                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1515                 if (rc)
1516                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1517                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1518                 break;
1519         case QETH_QDIO_CLEANING:
1520                 return rc;
1521         default:
1522                 break;
1523         }
1524         rc = qeth_clear_halt_card(card, use_halt);
1525         if (rc)
1526                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1527         return rc;
1528 }
1529 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1530
1531 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1532 {
1533         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1534         struct diag26c_vnic_resp *response = NULL;
1535         struct diag26c_vnic_req *request = NULL;
1536         struct ccw_dev_id id;
1537         char userid[80];
1538         int rc = 0;
1539
1540         QETH_CARD_TEXT(card, 2, "vmlayer");
1541
1542         cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1543         if (rc)
1544                 goto out;
1545
1546         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1547         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1548         if (!request || !response) {
1549                 rc = -ENOMEM;
1550                 goto out;
1551         }
1552
1553         ccw_device_get_id(CARD_RDEV(card), &id);
1554         request->resp_buf_len = sizeof(*response);
1555         request->resp_version = DIAG26C_VERSION6_VM65918;
1556         request->req_format = DIAG26C_VNIC_INFO;
1557         ASCEBC(userid, 8);
1558         memcpy(&request->sys_name, userid, 8);
1559         request->devno = id.devno;
1560
1561         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1562         rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1563         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1564         if (rc)
1565                 goto out;
1566         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1567
1568         if (request->resp_buf_len < sizeof(*response) ||
1569             response->version != request->resp_version) {
1570                 rc = -EIO;
1571                 goto out;
1572         }
1573
1574         if (response->protocol == VNIC_INFO_PROT_L2)
1575                 disc = QETH_DISCIPLINE_LAYER2;
1576         else if (response->protocol == VNIC_INFO_PROT_L3)
1577                 disc = QETH_DISCIPLINE_LAYER3;
1578
1579 out:
1580         kfree(response);
1581         kfree(request);
1582         if (rc)
1583                 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1584         return disc;
1585 }
1586
1587 /* Determine whether the device requires a specific layer discipline */
1588 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1589 {
1590         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1591
1592         if (IS_OSM(card) || IS_OSN(card))
1593                 disc = QETH_DISCIPLINE_LAYER2;
1594         else if (IS_VM_NIC(card))
1595                 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1596                                       qeth_vm_detect_layer(card);
1597
1598         switch (disc) {
1599         case QETH_DISCIPLINE_LAYER2:
1600                 QETH_CARD_TEXT(card, 3, "force l2");
1601                 break;
1602         case QETH_DISCIPLINE_LAYER3:
1603                 QETH_CARD_TEXT(card, 3, "force l3");
1604                 break;
1605         default:
1606                 QETH_CARD_TEXT(card, 3, "force no");
1607         }
1608
1609         return disc;
1610 }
1611
1612 static void qeth_set_blkt_defaults(struct qeth_card *card)
1613 {
1614         QETH_CARD_TEXT(card, 2, "cfgblkt");
1615
1616         if (card->info.use_v1_blkt) {
1617                 card->info.blkt.time_total = 0;
1618                 card->info.blkt.inter_packet = 0;
1619                 card->info.blkt.inter_packet_jumbo = 0;
1620         } else {
1621                 card->info.blkt.time_total = 250;
1622                 card->info.blkt.inter_packet = 5;
1623                 card->info.blkt.inter_packet_jumbo = 15;
1624         }
1625 }
1626
1627 static void qeth_init_tokens(struct qeth_card *card)
1628 {
1629         card->token.issuer_rm_w = 0x00010103UL;
1630         card->token.cm_filter_w = 0x00010108UL;
1631         card->token.cm_connection_w = 0x0001010aUL;
1632         card->token.ulp_filter_w = 0x0001010bUL;
1633         card->token.ulp_connection_w = 0x0001010dUL;
1634 }
1635
1636 static void qeth_init_func_level(struct qeth_card *card)
1637 {
1638         switch (card->info.type) {
1639         case QETH_CARD_TYPE_IQD:
1640                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1641                 break;
1642         case QETH_CARD_TYPE_OSD:
1643         case QETH_CARD_TYPE_OSN:
1644                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1645                 break;
1646         default:
1647                 break;
1648         }
1649 }
1650
1651 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1652                                   struct qeth_cmd_buffer *iob)
1653 {
1654         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1655                QETH_SEQ_NO_LENGTH);
1656         if (iob->channel == &card->write)
1657                 card->seqno.trans_hdr++;
1658 }
1659
1660 static int qeth_peer_func_level(int level)
1661 {
1662         if ((level & 0xff) == 8)
1663                 return (level & 0xff) + 0x400;
1664         if (((level >> 8) & 3) == 1)
1665                 return (level & 0xff) + 0x200;
1666         return level;
1667 }
1668
1669 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1670                                   struct qeth_cmd_buffer *iob)
1671 {
1672         qeth_idx_finalize_cmd(card, iob);
1673
1674         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1675                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1676         card->seqno.pdu_hdr++;
1677         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1678                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1679
1680         iob->callback = qeth_release_buffer_cb;
1681 }
1682
1683 static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1684                                  struct qeth_cmd_buffer *reply)
1685 {
1686         /* MPC cmds are issued strictly in sequence. */
1687         return !IS_IPA(reply->data);
1688 }
1689
1690 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1691                                                   void *data,
1692                                                   unsigned int data_length)
1693 {
1694         struct qeth_cmd_buffer *iob;
1695
1696         iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1697         if (!iob)
1698                 return NULL;
1699
1700         memcpy(iob->data, data, data_length);
1701         qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1702                        iob->data);
1703         iob->finalize = qeth_mpc_finalize_cmd;
1704         iob->match = qeth_mpc_match_reply;
1705         return iob;
1706 }
1707
1708 /**
1709  * qeth_send_control_data() -   send control command to the card
1710  * @card:                       qeth_card structure pointer
1711  * @iob:                        qeth_cmd_buffer pointer
1712  * @reply_cb:                   callback function pointer
1713  * @cb_card:                    pointer to the qeth_card structure
1714  * @cb_reply:                   pointer to the qeth_reply structure
1715  * @cb_cmd:                     pointer to the original iob for non-IPA
1716  *                              commands, or to the qeth_ipa_cmd structure
1717  *                              for the IPA commands.
1718  * @reply_param:                private pointer passed to the callback
1719  *
1720  * Callback function gets called one or more times, with cb_cmd
1721  * pointing to the response returned by the hardware. Callback
1722  * function must return
1723  *   > 0 if more reply blocks are expected,
1724  *     0 if the last or only reply block is received, and
1725  *   < 0 on error.
1726  * Callback function can get the value of the reply_param pointer from the
1727  * field 'param' of the structure qeth_reply.
1728  */
1729
1730 static int qeth_send_control_data(struct qeth_card *card,
1731                                   struct qeth_cmd_buffer *iob,
1732                                   int (*reply_cb)(struct qeth_card *cb_card,
1733                                                   struct qeth_reply *cb_reply,
1734                                                   unsigned long cb_cmd),
1735                                   void *reply_param)
1736 {
1737         struct qeth_channel *channel = iob->channel;
1738         struct qeth_reply *reply = &iob->reply;
1739         long timeout = iob->timeout;
1740         int rc;
1741
1742         QETH_CARD_TEXT(card, 2, "sendctl");
1743
1744         reply->callback = reply_cb;
1745         reply->param = reply_param;
1746
1747         timeout = wait_event_interruptible_timeout(card->wait_q,
1748                                                    qeth_trylock_channel(channel),
1749                                                    timeout);
1750         if (timeout <= 0) {
1751                 qeth_put_cmd(iob);
1752                 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1753         }
1754
1755         if (iob->finalize)
1756                 iob->finalize(card, iob);
1757         QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1758
1759         qeth_enqueue_cmd(card, iob);
1760
1761         /* This pairs with iob->callback, and keeps the iob alive after IO: */
1762         qeth_get_cmd(iob);
1763
1764         QETH_CARD_TEXT(card, 6, "noirqpnd");
1765         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1766         rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1767                                       (addr_t) iob, 0, 0, timeout);
1768         if (!rc)
1769                 channel->active_cmd = iob;
1770         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1771         if (rc) {
1772                 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1773                                  CARD_DEVID(card), rc);
1774                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1775                 qeth_dequeue_cmd(card, iob);
1776                 qeth_put_cmd(iob);
1777                 qeth_unlock_channel(card, channel);
1778                 goto out;
1779         }
1780
1781         timeout = wait_for_completion_interruptible_timeout(&iob->done,
1782                                                             timeout);
1783         if (timeout <= 0)
1784                 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1785
1786         qeth_dequeue_cmd(card, iob);
1787
1788         if (reply_cb) {
1789                 /* Wait until the callback for a late reply has completed: */
1790                 spin_lock_irq(&iob->lock);
1791                 if (rc)
1792                         /* Zap any callback that's still pending: */
1793                         iob->rc = rc;
1794                 spin_unlock_irq(&iob->lock);
1795         }
1796
1797         if (!rc)
1798                 rc = iob->rc;
1799
1800 out:
1801         qeth_put_cmd(iob);
1802         return rc;
1803 }
1804
1805 struct qeth_node_desc {
1806         struct node_descriptor nd1;
1807         struct node_descriptor nd2;
1808         struct node_descriptor nd3;
1809 };
1810
1811 static void qeth_read_conf_data_cb(struct qeth_card *card,
1812                                    struct qeth_cmd_buffer *iob,
1813                                    unsigned int data_length)
1814 {
1815         struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
1816         int rc = 0;
1817         u8 *tag;
1818
1819         QETH_CARD_TEXT(card, 2, "cfgunit");
1820
1821         if (data_length < sizeof(*nd)) {
1822                 rc = -EINVAL;
1823                 goto out;
1824         }
1825
1826         card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
1827                                nd->nd1.plant[1] == _ascebc['M'];
1828         tag = (u8 *)&nd->nd1.tag;
1829         card->info.chpid = tag[0];
1830         card->info.unit_addr2 = tag[1];
1831
1832         tag = (u8 *)&nd->nd2.tag;
1833         card->info.cula = tag[1];
1834
1835         card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
1836                                  nd->nd3.model[1] == 0xF0 &&
1837                                  nd->nd3.model[2] >= 0xF1 &&
1838                                  nd->nd3.model[2] <= 0xF4;
1839
1840 out:
1841         qeth_notify_cmd(iob, rc);
1842         qeth_put_cmd(iob);
1843 }
1844
1845 static int qeth_read_conf_data(struct qeth_card *card)
1846 {
1847         struct qeth_channel *channel = &card->data;
1848         struct qeth_cmd_buffer *iob;
1849         struct ciw *ciw;
1850
1851         /* scan for RCD command in extended SenseID data */
1852         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1853         if (!ciw || ciw->cmd == 0)
1854                 return -EOPNOTSUPP;
1855         if (ciw->count < sizeof(struct qeth_node_desc))
1856                 return -EINVAL;
1857
1858         iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1859         if (!iob)
1860                 return -ENOMEM;
1861
1862         iob->callback = qeth_read_conf_data_cb;
1863         qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1864                        iob->data);
1865
1866         return qeth_send_control_data(card, iob, NULL, NULL);
1867 }
1868
1869 static int qeth_idx_check_activate_response(struct qeth_card *card,
1870                                             struct qeth_channel *channel,
1871                                             struct qeth_cmd_buffer *iob)
1872 {
1873         int rc;
1874
1875         rc = qeth_check_idx_response(card, iob->data);
1876         if (rc)
1877                 return rc;
1878
1879         if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1880                 return 0;
1881
1882         /* negative reply: */
1883         QETH_CARD_TEXT_(card, 2, "idxneg%c",
1884                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1885
1886         switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1887         case QETH_IDX_ACT_ERR_EXCL:
1888                 dev_err(&channel->ccwdev->dev,
1889                         "The adapter is used exclusively by another host\n");
1890                 return -EBUSY;
1891         case QETH_IDX_ACT_ERR_AUTH:
1892         case QETH_IDX_ACT_ERR_AUTH_USER:
1893                 dev_err(&channel->ccwdev->dev,
1894                         "Setting the device online failed because of insufficient authorization\n");
1895                 return -EPERM;
1896         default:
1897                 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1898                                  CCW_DEVID(channel->ccwdev));
1899                 return -EIO;
1900         }
1901 }
1902
1903 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
1904                                               struct qeth_cmd_buffer *iob,
1905                                               unsigned int data_length)
1906 {
1907         struct qeth_channel *channel = iob->channel;
1908         u16 peer_level;
1909         int rc;
1910
1911         QETH_CARD_TEXT(card, 2, "idxrdcb");
1912
1913         rc = qeth_idx_check_activate_response(card, channel, iob);
1914         if (rc)
1915                 goto out;
1916
1917         memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1918         if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1919                 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1920                                  CCW_DEVID(channel->ccwdev),
1921                                  card->info.func_level, peer_level);
1922                 rc = -EINVAL;
1923                 goto out;
1924         }
1925
1926         memcpy(&card->token.issuer_rm_r,
1927                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1928                QETH_MPC_TOKEN_LENGTH);
1929         memcpy(&card->info.mcl_level[0],
1930                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1931
1932 out:
1933         qeth_notify_cmd(iob, rc);
1934         qeth_put_cmd(iob);
1935 }
1936
1937 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
1938                                                struct qeth_cmd_buffer *iob,
1939                                                unsigned int data_length)
1940 {
1941         struct qeth_channel *channel = iob->channel;
1942         u16 peer_level;
1943         int rc;
1944
1945         QETH_CARD_TEXT(card, 2, "idxwrcb");
1946
1947         rc = qeth_idx_check_activate_response(card, channel, iob);
1948         if (rc)
1949                 goto out;
1950
1951         memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1952         if ((peer_level & ~0x0100) !=
1953             qeth_peer_func_level(card->info.func_level)) {
1954                 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1955                                  CCW_DEVID(channel->ccwdev),
1956                                  card->info.func_level, peer_level);
1957                 rc = -EINVAL;
1958         }
1959
1960 out:
1961         qeth_notify_cmd(iob, rc);
1962         qeth_put_cmd(iob);
1963 }
1964
1965 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
1966                                         struct qeth_cmd_buffer *iob)
1967 {
1968         u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
1969         u8 port = ((u8)card->dev->dev_port) | 0x80;
1970         struct ccw1 *ccw = __ccw_from_cmd(iob);
1971         struct ccw_dev_id dev_id;
1972
1973         qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
1974                        iob->data);
1975         qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
1976         ccw_device_get_id(CARD_DDEV(card), &dev_id);
1977         iob->finalize = qeth_idx_finalize_cmd;
1978
1979         port |= QETH_IDX_ACT_INVAL_FRAME;
1980         memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
1981         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1982                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1983         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1984                &card->info.func_level, 2);
1985         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
1986         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
1987 }
1988
1989 static int qeth_idx_activate_read_channel(struct qeth_card *card)
1990 {
1991         struct qeth_channel *channel = &card->read;
1992         struct qeth_cmd_buffer *iob;
1993         int rc;
1994
1995         QETH_CARD_TEXT(card, 2, "idxread");
1996
1997         iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
1998         if (!iob)
1999                 return -ENOMEM;
2000
2001         memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2002         qeth_idx_setup_activate_cmd(card, iob);
2003         iob->callback = qeth_idx_activate_read_channel_cb;
2004
2005         rc = qeth_send_control_data(card, iob, NULL, NULL);
2006         if (rc)
2007                 return rc;
2008
2009         channel->state = CH_STATE_UP;
2010         return 0;
2011 }
2012
2013 static int qeth_idx_activate_write_channel(struct qeth_card *card)
2014 {
2015         struct qeth_channel *channel = &card->write;
2016         struct qeth_cmd_buffer *iob;
2017         int rc;
2018
2019         QETH_CARD_TEXT(card, 2, "idxwrite");
2020
2021         iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2022         if (!iob)
2023                 return -ENOMEM;
2024
2025         memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2026         qeth_idx_setup_activate_cmd(card, iob);
2027         iob->callback = qeth_idx_activate_write_channel_cb;
2028
2029         rc = qeth_send_control_data(card, iob, NULL, NULL);
2030         if (rc)
2031                 return rc;
2032
2033         channel->state = CH_STATE_UP;
2034         return 0;
2035 }
2036
2037 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2038                 unsigned long data)
2039 {
2040         struct qeth_cmd_buffer *iob;
2041
2042         QETH_CARD_TEXT(card, 2, "cmenblcb");
2043
2044         iob = (struct qeth_cmd_buffer *) data;
2045         memcpy(&card->token.cm_filter_r,
2046                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2047                QETH_MPC_TOKEN_LENGTH);
2048         return 0;
2049 }
2050
2051 static int qeth_cm_enable(struct qeth_card *card)
2052 {
2053         struct qeth_cmd_buffer *iob;
2054
2055         QETH_CARD_TEXT(card, 2, "cmenable");
2056
2057         iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2058         if (!iob)
2059                 return -ENOMEM;
2060
2061         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2062                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2063         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2064                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2065
2066         return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2067 }
2068
2069 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2070                 unsigned long data)
2071 {
2072         struct qeth_cmd_buffer *iob;
2073
2074         QETH_CARD_TEXT(card, 2, "cmsetpcb");
2075
2076         iob = (struct qeth_cmd_buffer *) data;
2077         memcpy(&card->token.cm_connection_r,
2078                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2079                QETH_MPC_TOKEN_LENGTH);
2080         return 0;
2081 }
2082
2083 static int qeth_cm_setup(struct qeth_card *card)
2084 {
2085         struct qeth_cmd_buffer *iob;
2086
2087         QETH_CARD_TEXT(card, 2, "cmsetup");
2088
2089         iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2090         if (!iob)
2091                 return -ENOMEM;
2092
2093         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2094                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2095         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2096                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2097         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2098                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2099         return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2100 }
2101
2102 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2103 {
2104         struct net_device *dev = card->dev;
2105         unsigned int new_mtu;
2106
2107         if (!max_mtu) {
2108                 /* IQD needs accurate max MTU to set up its RX buffers: */
2109                 if (IS_IQD(card))
2110                         return -EINVAL;
2111                 /* tolerate quirky HW: */
2112                 max_mtu = ETH_MAX_MTU;
2113         }
2114
2115         rtnl_lock();
2116         if (IS_IQD(card)) {
2117                 /* move any device with default MTU to new max MTU: */
2118                 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2119
2120                 /* adjust RX buffer size to new max MTU: */
2121                 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2122                 if (dev->max_mtu && dev->max_mtu != max_mtu)
2123                         qeth_free_qdio_queues(card);
2124         } else {
2125                 if (dev->mtu)
2126                         new_mtu = dev->mtu;
2127                 /* default MTUs for first setup: */
2128                 else if (IS_LAYER2(card))
2129                         new_mtu = ETH_DATA_LEN;
2130                 else
2131                         new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2132         }
2133
2134         dev->max_mtu = max_mtu;
2135         dev->mtu = min(new_mtu, max_mtu);
2136         rtnl_unlock();
2137         return 0;
2138 }
2139
2140 static int qeth_get_mtu_outof_framesize(int framesize)
2141 {
2142         switch (framesize) {
2143         case 0x4000:
2144                 return 8192;
2145         case 0x6000:
2146                 return 16384;
2147         case 0xa000:
2148                 return 32768;
2149         case 0xffff:
2150                 return 57344;
2151         default:
2152                 return 0;
2153         }
2154 }
2155
2156 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2157                 unsigned long data)
2158 {
2159         __u16 mtu, framesize;
2160         __u16 len;
2161         __u8 link_type;
2162         struct qeth_cmd_buffer *iob;
2163
2164         QETH_CARD_TEXT(card, 2, "ulpenacb");
2165
2166         iob = (struct qeth_cmd_buffer *) data;
2167         memcpy(&card->token.ulp_filter_r,
2168                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2169                QETH_MPC_TOKEN_LENGTH);
2170         if (IS_IQD(card)) {
2171                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2172                 mtu = qeth_get_mtu_outof_framesize(framesize);
2173         } else {
2174                 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2175         }
2176         *(u16 *)reply->param = mtu;
2177
2178         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2179         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2180                 memcpy(&link_type,
2181                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2182                 card->info.link_type = link_type;
2183         } else
2184                 card->info.link_type = 0;
2185         QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2186         return 0;
2187 }
2188
2189 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2190 {
2191         if (IS_OSN(card))
2192                 return QETH_PROT_OSN2;
2193         return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2194 }
2195
2196 static int qeth_ulp_enable(struct qeth_card *card)
2197 {
2198         u8 prot_type = qeth_mpc_select_prot_type(card);
2199         struct qeth_cmd_buffer *iob;
2200         u16 max_mtu;
2201         int rc;
2202
2203         QETH_CARD_TEXT(card, 2, "ulpenabl");
2204
2205         iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2206         if (!iob)
2207                 return -ENOMEM;
2208
2209         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2210         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2211         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2212                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2213         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2214                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2215         rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2216         if (rc)
2217                 return rc;
2218         return qeth_update_max_mtu(card, max_mtu);
2219 }
2220
2221 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2222                 unsigned long data)
2223 {
2224         struct qeth_cmd_buffer *iob;
2225
2226         QETH_CARD_TEXT(card, 2, "ulpstpcb");
2227
2228         iob = (struct qeth_cmd_buffer *) data;
2229         memcpy(&card->token.ulp_connection_r,
2230                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2231                QETH_MPC_TOKEN_LENGTH);
2232         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2233                      3)) {
2234                 QETH_CARD_TEXT(card, 2, "olmlimit");
2235                 dev_err(&card->gdev->dev, "A connection could not be "
2236                         "established because of an OLM limit\n");
2237                 return -EMLINK;
2238         }
2239         return 0;
2240 }
2241
2242 static int qeth_ulp_setup(struct qeth_card *card)
2243 {
2244         __u16 temp;
2245         struct qeth_cmd_buffer *iob;
2246         struct ccw_dev_id dev_id;
2247
2248         QETH_CARD_TEXT(card, 2, "ulpsetup");
2249
2250         iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2251         if (!iob)
2252                 return -ENOMEM;
2253
2254         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2255                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2256         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2257                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2258         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2259                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2260
2261         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2262         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2263         temp = (card->info.cula << 8) + card->info.unit_addr2;
2264         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2265         return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2266 }
2267
2268 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2269 {
2270         struct qeth_qdio_out_buffer *newbuf;
2271
2272         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2273         if (!newbuf)
2274                 return -ENOMEM;
2275
2276         newbuf->buffer = q->qdio_bufs[bidx];
2277         skb_queue_head_init(&newbuf->skb_list);
2278         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2279         newbuf->q = q;
2280         newbuf->next_pending = q->bufs[bidx];
2281         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2282         q->bufs[bidx] = newbuf;
2283         return 0;
2284 }
2285
2286 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2287 {
2288         if (!q)
2289                 return;
2290
2291         qeth_drain_output_queue(q, true);
2292         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2293         kfree(q);
2294 }
2295
2296 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2297 {
2298         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2299
2300         if (!q)
2301                 return NULL;
2302
2303         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2304                 kfree(q);
2305                 return NULL;
2306         }
2307         return q;
2308 }
2309
2310 static void qeth_tx_completion_timer(struct timer_list *timer)
2311 {
2312         struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2313
2314         napi_schedule(&queue->napi);
2315         QETH_TXQ_STAT_INC(queue, completion_timer);
2316 }
2317
2318 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2319 {
2320         int i, j;
2321
2322         QETH_CARD_TEXT(card, 2, "allcqdbf");
2323
2324         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2325                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2326                 return 0;
2327
2328         QETH_CARD_TEXT(card, 2, "inq");
2329         card->qdio.in_q = qeth_alloc_qdio_queue();
2330         if (!card->qdio.in_q)
2331                 goto out_nomem;
2332
2333         /* inbound buffer pool */
2334         if (qeth_alloc_buffer_pool(card))
2335                 goto out_freeinq;
2336
2337         /* outbound */
2338         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2339                 struct qeth_qdio_out_q *queue;
2340
2341                 queue = qeth_alloc_output_queue();
2342                 if (!queue)
2343                         goto out_freeoutq;
2344                 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2345                 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2346                 card->qdio.out_qs[i] = queue;
2347                 queue->card = card;
2348                 queue->queue_no = i;
2349                 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2350
2351                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2352                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2353                         WARN_ON(queue->bufs[j]);
2354                         if (qeth_init_qdio_out_buf(queue, j))
2355                                 goto out_freeoutqbufs;
2356                 }
2357         }
2358
2359         /* completion */
2360         if (qeth_alloc_cq(card))
2361                 goto out_freeoutq;
2362
2363         return 0;
2364
2365 out_freeoutqbufs:
2366         while (j > 0) {
2367                 --j;
2368                 kmem_cache_free(qeth_qdio_outbuf_cache,
2369                                 card->qdio.out_qs[i]->bufs[j]);
2370                 card->qdio.out_qs[i]->bufs[j] = NULL;
2371         }
2372 out_freeoutq:
2373         while (i > 0) {
2374                 qeth_free_output_queue(card->qdio.out_qs[--i]);
2375                 card->qdio.out_qs[i] = NULL;
2376         }
2377         qeth_free_buffer_pool(card);
2378 out_freeinq:
2379         qeth_free_qdio_queue(card->qdio.in_q);
2380         card->qdio.in_q = NULL;
2381 out_nomem:
2382         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2383         return -ENOMEM;
2384 }
2385
2386 static void qeth_free_qdio_queues(struct qeth_card *card)
2387 {
2388         int i, j;
2389
2390         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2391                 QETH_QDIO_UNINITIALIZED)
2392                 return;
2393
2394         qeth_free_cq(card);
2395         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2396         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2397                 if (card->qdio.in_q->bufs[j].rx_skb)
2398                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2399         }
2400         qeth_free_qdio_queue(card->qdio.in_q);
2401         card->qdio.in_q = NULL;
2402         /* inbound buffer pool */
2403         qeth_free_buffer_pool(card);
2404         /* free outbound qdio_qs */
2405         for (i = 0; i < card->qdio.no_out_queues; i++) {
2406                 qeth_free_output_queue(card->qdio.out_qs[i]);
2407                 card->qdio.out_qs[i] = NULL;
2408         }
2409 }
2410
2411 static void qeth_create_qib_param_field(struct qeth_card *card,
2412                 char *param_field)
2413 {
2414
2415         param_field[0] = _ascebc['P'];
2416         param_field[1] = _ascebc['C'];
2417         param_field[2] = _ascebc['I'];
2418         param_field[3] = _ascebc['T'];
2419         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2420         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2421         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2422 }
2423
2424 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2425                 char *param_field)
2426 {
2427         param_field[16] = _ascebc['B'];
2428         param_field[17] = _ascebc['L'];
2429         param_field[18] = _ascebc['K'];
2430         param_field[19] = _ascebc['T'];
2431         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2432         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2433         *((unsigned int *) (&param_field[28])) =
2434                 card->info.blkt.inter_packet_jumbo;
2435 }
2436
2437 static int qeth_qdio_activate(struct qeth_card *card)
2438 {
2439         QETH_CARD_TEXT(card, 3, "qdioact");
2440         return qdio_activate(CARD_DDEV(card));
2441 }
2442
2443 static int qeth_dm_act(struct qeth_card *card)
2444 {
2445         struct qeth_cmd_buffer *iob;
2446
2447         QETH_CARD_TEXT(card, 2, "dmact");
2448
2449         iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2450         if (!iob)
2451                 return -ENOMEM;
2452
2453         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2454                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2455         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2456                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2457         return qeth_send_control_data(card, iob, NULL, NULL);
2458 }
2459
2460 static int qeth_mpc_initialize(struct qeth_card *card)
2461 {
2462         int rc;
2463
2464         QETH_CARD_TEXT(card, 2, "mpcinit");
2465
2466         rc = qeth_issue_next_read(card);
2467         if (rc) {
2468                 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2469                 return rc;
2470         }
2471         rc = qeth_cm_enable(card);
2472         if (rc) {
2473                 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2474                 return rc;
2475         }
2476         rc = qeth_cm_setup(card);
2477         if (rc) {
2478                 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2479                 return rc;
2480         }
2481         rc = qeth_ulp_enable(card);
2482         if (rc) {
2483                 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2484                 return rc;
2485         }
2486         rc = qeth_ulp_setup(card);
2487         if (rc) {
2488                 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2489                 return rc;
2490         }
2491         rc = qeth_alloc_qdio_queues(card);
2492         if (rc) {
2493                 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2494                 return rc;
2495         }
2496         rc = qeth_qdio_establish(card);
2497         if (rc) {
2498                 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2499                 qeth_free_qdio_queues(card);
2500                 return rc;
2501         }
2502         rc = qeth_qdio_activate(card);
2503         if (rc) {
2504                 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2505                 return rc;
2506         }
2507         rc = qeth_dm_act(card);
2508         if (rc) {
2509                 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2510                 return rc;
2511         }
2512
2513         return 0;
2514 }
2515
2516 void qeth_print_status_message(struct qeth_card *card)
2517 {
2518         switch (card->info.type) {
2519         case QETH_CARD_TYPE_OSD:
2520         case QETH_CARD_TYPE_OSM:
2521         case QETH_CARD_TYPE_OSX:
2522                 /* VM will use a non-zero first character
2523                  * to indicate a HiperSockets like reporting
2524                  * of the level OSA sets the first character to zero
2525                  * */
2526                 if (!card->info.mcl_level[0]) {
2527                         sprintf(card->info.mcl_level, "%02x%02x",
2528                                 card->info.mcl_level[2],
2529                                 card->info.mcl_level[3]);
2530                         break;
2531                 }
2532                 /* fallthrough */
2533         case QETH_CARD_TYPE_IQD:
2534                 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2535                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2536                                 card->info.mcl_level[0]];
2537                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2538                                 card->info.mcl_level[1]];
2539                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2540                                 card->info.mcl_level[2]];
2541                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2542                                 card->info.mcl_level[3]];
2543                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2544                 }
2545                 break;
2546         default:
2547                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2548         }
2549         dev_info(&card->gdev->dev,
2550                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2551                  qeth_get_cardname(card),
2552                  (card->info.mcl_level[0]) ? " (level: " : "",
2553                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2554                  (card->info.mcl_level[0]) ? ")" : "",
2555                  qeth_get_cardname_short(card));
2556 }
2557 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2558
2559 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2560 {
2561         struct qeth_buffer_pool_entry *entry;
2562
2563         QETH_CARD_TEXT(card, 5, "inwrklst");
2564
2565         list_for_each_entry(entry,
2566                             &card->qdio.init_pool.entry_list, init_list) {
2567                 qeth_put_buffer_pool_entry(card, entry);
2568         }
2569 }
2570
2571 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2572                                         struct qeth_card *card)
2573 {
2574         struct list_head *plh;
2575         struct qeth_buffer_pool_entry *entry;
2576         int i, free;
2577         struct page *page;
2578
2579         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2580                 return NULL;
2581
2582         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2583                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2584                 free = 1;
2585                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2586                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2587                                 free = 0;
2588                                 break;
2589                         }
2590                 }
2591                 if (free) {
2592                         list_del_init(&entry->list);
2593                         return entry;
2594                 }
2595         }
2596
2597         /* no free buffer in pool so take first one and swap pages */
2598         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2599                         struct qeth_buffer_pool_entry, list);
2600         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2601                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2602                         page = alloc_page(GFP_ATOMIC);
2603                         if (!page) {
2604                                 return NULL;
2605                         } else {
2606                                 free_page((unsigned long)entry->elements[i]);
2607                                 entry->elements[i] = page_address(page);
2608                                 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2609                         }
2610                 }
2611         }
2612         list_del_init(&entry->list);
2613         return entry;
2614 }
2615
2616 static int qeth_init_input_buffer(struct qeth_card *card,
2617                 struct qeth_qdio_buffer *buf)
2618 {
2619         struct qeth_buffer_pool_entry *pool_entry;
2620         int i;
2621
2622         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2623                 buf->rx_skb = netdev_alloc_skb(card->dev,
2624                                                ETH_HLEN +
2625                                                sizeof(struct ipv6hdr));
2626                 if (!buf->rx_skb)
2627                         return 1;
2628         }
2629
2630         pool_entry = qeth_find_free_buffer_pool_entry(card);
2631         if (!pool_entry)
2632                 return 1;
2633
2634         /*
2635          * since the buffer is accessed only from the input_tasklet
2636          * there shouldn't be a need to synchronize; also, since we use
2637          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2638          * buffers
2639          */
2640
2641         buf->pool_entry = pool_entry;
2642         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2643                 buf->buffer->element[i].length = PAGE_SIZE;
2644                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2645                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2646                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2647                 else
2648                         buf->buffer->element[i].eflags = 0;
2649                 buf->buffer->element[i].sflags = 0;
2650         }
2651         return 0;
2652 }
2653
2654 static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2655                                             struct qeth_qdio_out_q *queue)
2656 {
2657         if (!IS_IQD(card) ||
2658             qeth_iqd_is_mcast_queue(card, queue) ||
2659             card->options.cq == QETH_CQ_ENABLED ||
2660             qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2661                 return 1;
2662
2663         return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2664 }
2665
2666 static int qeth_init_qdio_queues(struct qeth_card *card)
2667 {
2668         unsigned int i;
2669         int rc;
2670
2671         QETH_CARD_TEXT(card, 2, "initqdqs");
2672
2673         /* inbound queue */
2674         qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2675         memset(&card->rx, 0, sizeof(struct qeth_rx));
2676         qeth_initialize_working_pool_list(card);
2677         /*give only as many buffers to hardware as we have buffer pool entries*/
2678         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2679                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2680         card->qdio.in_q->next_buf_to_init =
2681                 card->qdio.in_buf_pool.buf_count - 1;
2682         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2683                      card->qdio.in_buf_pool.buf_count - 1);
2684         if (rc) {
2685                 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2686                 return rc;
2687         }
2688
2689         /* completion */
2690         rc = qeth_cq_init(card);
2691         if (rc) {
2692                 return rc;
2693         }
2694
2695         /* outbound queue */
2696         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2697                 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2698
2699                 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2700                 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2701                 queue->next_buf_to_fill = 0;
2702                 queue->do_pack = 0;
2703                 queue->prev_hdr = NULL;
2704                 queue->bulk_start = 0;
2705                 queue->bulk_count = 0;
2706                 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
2707                 atomic_set(&queue->used_buffers, 0);
2708                 atomic_set(&queue->set_pci_flags_count, 0);
2709                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2710                 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
2711         }
2712         return 0;
2713 }
2714
2715 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2716                                   struct qeth_cmd_buffer *iob)
2717 {
2718         qeth_mpc_finalize_cmd(card, iob);
2719
2720         /* override with IPA-specific values: */
2721         __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
2722 }
2723
2724 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2725                           u16 cmd_length,
2726                           bool (*match)(struct qeth_cmd_buffer *iob,
2727                                         struct qeth_cmd_buffer *reply))
2728 {
2729         u8 prot_type = qeth_mpc_select_prot_type(card);
2730         u16 total_length = iob->length;
2731
2732         qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2733                        iob->data);
2734         iob->finalize = qeth_ipa_finalize_cmd;
2735         iob->match = match;
2736
2737         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2738         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2739         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2740         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2741         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2742         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2743                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2744         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2745 }
2746 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2747
2748 static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
2749                                  struct qeth_cmd_buffer *reply)
2750 {
2751         struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
2752
2753         return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
2754 }
2755
2756 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2757                                            enum qeth_ipa_cmds cmd_code,
2758                                            enum qeth_prot_versions prot,
2759                                            unsigned int data_length)
2760 {
2761         enum qeth_link_types link_type = card->info.link_type;
2762         struct qeth_cmd_buffer *iob;
2763         struct qeth_ipacmd_hdr *hdr;
2764
2765         data_length += offsetof(struct qeth_ipa_cmd, data);
2766         iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2767                              QETH_IPA_TIMEOUT);
2768         if (!iob)
2769                 return NULL;
2770
2771         qeth_prepare_ipa_cmd(card, iob, data_length, qeth_ipa_match_reply);
2772
2773         hdr = &__ipa_cmd(iob)->hdr;
2774         hdr->command = cmd_code;
2775         hdr->initiator = IPA_CMD_INITIATOR_HOST;
2776         /* hdr->seqno is set by qeth_send_control_data() */
2777         hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1;
2778         hdr->rel_adapter_no = (u8) card->dev->dev_port;
2779         hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
2780         hdr->param_count = 1;
2781         hdr->prot_version = prot;
2782         return iob;
2783 }
2784 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2785
2786 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2787                                 struct qeth_reply *reply, unsigned long data)
2788 {
2789         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2790
2791         return (cmd->hdr.return_code) ? -EIO : 0;
2792 }
2793
2794 /**
2795  * qeth_send_ipa_cmd() - send an IPA command
2796  *
2797  * See qeth_send_control_data() for explanation of the arguments.
2798  */
2799
2800 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2801                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2802                         unsigned long),
2803                 void *reply_param)
2804 {
2805         int rc;
2806
2807         QETH_CARD_TEXT(card, 4, "sendipa");
2808
2809         if (card->read_or_write_problem) {
2810                 qeth_put_cmd(iob);
2811                 return -EIO;
2812         }
2813
2814         if (reply_cb == NULL)
2815                 reply_cb = qeth_send_ipa_cmd_cb;
2816         rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
2817         if (rc == -ETIME) {
2818                 qeth_clear_ipacmd_list(card);
2819                 qeth_schedule_recovery(card);
2820         }
2821         return rc;
2822 }
2823 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2824
2825 static int qeth_send_startlan_cb(struct qeth_card *card,
2826                                  struct qeth_reply *reply, unsigned long data)
2827 {
2828         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2829
2830         if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2831                 return -ENETDOWN;
2832
2833         return (cmd->hdr.return_code) ? -EIO : 0;
2834 }
2835
2836 static int qeth_send_startlan(struct qeth_card *card)
2837 {
2838         struct qeth_cmd_buffer *iob;
2839
2840         QETH_CARD_TEXT(card, 2, "strtlan");
2841
2842         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
2843         if (!iob)
2844                 return -ENOMEM;
2845         return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
2846 }
2847
2848 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2849 {
2850         if (!cmd->hdr.return_code)
2851                 cmd->hdr.return_code =
2852                         cmd->data.setadapterparms.hdr.return_code;
2853         return cmd->hdr.return_code;
2854 }
2855
2856 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2857                 struct qeth_reply *reply, unsigned long data)
2858 {
2859         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2860
2861         QETH_CARD_TEXT(card, 3, "quyadpcb");
2862         if (qeth_setadpparms_inspect_rc(cmd))
2863                 return -EIO;
2864
2865         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2866                 card->info.link_type =
2867                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2868                 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
2869         }
2870         card->options.adp.supported =
2871                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2872         return 0;
2873 }
2874
2875 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2876                                                     enum qeth_ipa_setadp_cmd adp_cmd,
2877                                                     unsigned int data_length)
2878 {
2879         struct qeth_ipacmd_setadpparms_hdr *hdr;
2880         struct qeth_cmd_buffer *iob;
2881
2882         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2883                                  data_length +
2884                                  offsetof(struct qeth_ipacmd_setadpparms,
2885                                           data));
2886         if (!iob)
2887                 return NULL;
2888
2889         hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2890         hdr->cmdlength = sizeof(*hdr) + data_length;
2891         hdr->command_code = adp_cmd;
2892         hdr->used_total = 1;
2893         hdr->seq_no = 1;
2894         return iob;
2895 }
2896
2897 static int qeth_query_setadapterparms(struct qeth_card *card)
2898 {
2899         int rc;
2900         struct qeth_cmd_buffer *iob;
2901
2902         QETH_CARD_TEXT(card, 3, "queryadp");
2903         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2904                                    SETADP_DATA_SIZEOF(query_cmds_supp));
2905         if (!iob)
2906                 return -ENOMEM;
2907         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2908         return rc;
2909 }
2910
2911 static int qeth_query_ipassists_cb(struct qeth_card *card,
2912                 struct qeth_reply *reply, unsigned long data)
2913 {
2914         struct qeth_ipa_cmd *cmd;
2915
2916         QETH_CARD_TEXT(card, 2, "qipasscb");
2917
2918         cmd = (struct qeth_ipa_cmd *) data;
2919
2920         switch (cmd->hdr.return_code) {
2921         case IPA_RC_SUCCESS:
2922                 break;
2923         case IPA_RC_NOTSUPP:
2924         case IPA_RC_L2_UNSUPPORTED_CMD:
2925                 QETH_CARD_TEXT(card, 2, "ipaunsup");
2926                 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
2927                 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
2928                 return -EOPNOTSUPP;
2929         default:
2930                 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2931                                  CARD_DEVID(card), cmd->hdr.return_code);
2932                 return -EIO;
2933         }
2934
2935         if (cmd->hdr.prot_version == QETH_PROT_IPV4)
2936                 card->options.ipa4 = cmd->hdr.assists;
2937         else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
2938                 card->options.ipa6 = cmd->hdr.assists;
2939         else
2940                 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
2941                                  CARD_DEVID(card));
2942         return 0;
2943 }
2944
2945 static int qeth_query_ipassists(struct qeth_card *card,
2946                                 enum qeth_prot_versions prot)
2947 {
2948         int rc;
2949         struct qeth_cmd_buffer *iob;
2950
2951         QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
2952         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
2953         if (!iob)
2954                 return -ENOMEM;
2955         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2956         return rc;
2957 }
2958
2959 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
2960                                 struct qeth_reply *reply, unsigned long data)
2961 {
2962         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2963         struct qeth_query_switch_attributes *attrs;
2964         struct qeth_switch_info *sw_info;
2965
2966         QETH_CARD_TEXT(card, 2, "qswiatcb");
2967         if (qeth_setadpparms_inspect_rc(cmd))
2968                 return -EIO;
2969
2970         sw_info = (struct qeth_switch_info *)reply->param;
2971         attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
2972         sw_info->capabilities = attrs->capabilities;
2973         sw_info->settings = attrs->settings;
2974         QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
2975                         sw_info->settings);
2976         return 0;
2977 }
2978
2979 int qeth_query_switch_attributes(struct qeth_card *card,
2980                                  struct qeth_switch_info *sw_info)
2981 {
2982         struct qeth_cmd_buffer *iob;
2983
2984         QETH_CARD_TEXT(card, 2, "qswiattr");
2985         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
2986                 return -EOPNOTSUPP;
2987         if (!netif_carrier_ok(card->dev))
2988                 return -ENOMEDIUM;
2989         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
2990         if (!iob)
2991                 return -ENOMEM;
2992         return qeth_send_ipa_cmd(card, iob,
2993                                 qeth_query_switch_attributes_cb, sw_info);
2994 }
2995
2996 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
2997                                           enum qeth_diags_cmds sub_cmd,
2998                                           unsigned int data_length)
2999 {
3000         struct qeth_ipacmd_diagass *cmd;
3001         struct qeth_cmd_buffer *iob;
3002
3003         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3004                                  DIAG_HDR_LEN + data_length);
3005         if (!iob)
3006                 return NULL;
3007
3008         cmd = &__ipa_cmd(iob)->data.diagass;
3009         cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3010         cmd->subcmd = sub_cmd;
3011         return iob;
3012 }
3013 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3014
3015 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3016                 struct qeth_reply *reply, unsigned long data)
3017 {
3018         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3019         u16 rc = cmd->hdr.return_code;
3020
3021         if (rc) {
3022                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3023                 return -EIO;
3024         }
3025
3026         card->info.diagass_support = cmd->data.diagass.ext;
3027         return 0;
3028 }
3029
3030 static int qeth_query_setdiagass(struct qeth_card *card)
3031 {
3032         struct qeth_cmd_buffer *iob;
3033
3034         QETH_CARD_TEXT(card, 2, "qdiagass");
3035         iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3036         if (!iob)
3037                 return -ENOMEM;
3038         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3039 }
3040
3041 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3042 {
3043         unsigned long info = get_zeroed_page(GFP_KERNEL);
3044         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3045         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3046         struct ccw_dev_id ccwid;
3047         int level;
3048
3049         tid->chpid = card->info.chpid;
3050         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3051         tid->ssid = ccwid.ssid;
3052         tid->devno = ccwid.devno;
3053         if (!info)
3054                 return;
3055         level = stsi(NULL, 0, 0, 0);
3056         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3057                 tid->lparnr = info222->lpar_number;
3058         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3059                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3060                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3061         }
3062         free_page(info);
3063         return;
3064 }
3065
3066 static int qeth_hw_trap_cb(struct qeth_card *card,
3067                 struct qeth_reply *reply, unsigned long data)
3068 {
3069         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3070         u16 rc = cmd->hdr.return_code;
3071
3072         if (rc) {
3073                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3074                 return -EIO;
3075         }
3076         return 0;
3077 }
3078
3079 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3080 {
3081         struct qeth_cmd_buffer *iob;
3082         struct qeth_ipa_cmd *cmd;
3083
3084         QETH_CARD_TEXT(card, 2, "diagtrap");
3085         iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3086         if (!iob)
3087                 return -ENOMEM;
3088         cmd = __ipa_cmd(iob);
3089         cmd->data.diagass.type = 1;
3090         cmd->data.diagass.action = action;
3091         switch (action) {
3092         case QETH_DIAGS_TRAP_ARM:
3093                 cmd->data.diagass.options = 0x0003;
3094                 cmd->data.diagass.ext = 0x00010000 +
3095                         sizeof(struct qeth_trap_id);
3096                 qeth_get_trap_id(card,
3097                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3098                 break;
3099         case QETH_DIAGS_TRAP_DISARM:
3100                 cmd->data.diagass.options = 0x0001;
3101                 break;
3102         case QETH_DIAGS_TRAP_CAPTURE:
3103                 break;
3104         }
3105         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3106 }
3107
3108 static int qeth_check_qdio_errors(struct qeth_card *card,
3109                                   struct qdio_buffer *buf,
3110                                   unsigned int qdio_error,
3111                                   const char *dbftext)
3112 {
3113         if (qdio_error) {
3114                 QETH_CARD_TEXT(card, 2, dbftext);
3115                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3116                                buf->element[15].sflags);
3117                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3118                                buf->element[14].sflags);
3119                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3120                 if ((buf->element[15].sflags) == 0x12) {
3121                         QETH_CARD_STAT_INC(card, rx_fifo_errors);
3122                         return 0;
3123                 } else
3124                         return 1;
3125         }
3126         return 0;
3127 }
3128
3129 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3130 {
3131         struct qeth_qdio_q *queue = card->qdio.in_q;
3132         struct list_head *lh;
3133         int count;
3134         int i;
3135         int rc;
3136         int newcount = 0;
3137
3138         count = (index < queue->next_buf_to_init)?
3139                 card->qdio.in_buf_pool.buf_count -
3140                 (queue->next_buf_to_init - index) :
3141                 card->qdio.in_buf_pool.buf_count -
3142                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3143         /* only requeue at a certain threshold to avoid SIGAs */
3144         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3145                 for (i = queue->next_buf_to_init;
3146                      i < queue->next_buf_to_init + count; ++i) {
3147                         if (qeth_init_input_buffer(card,
3148                                 &queue->bufs[QDIO_BUFNR(i)])) {
3149                                 break;
3150                         } else {
3151                                 newcount++;
3152                         }
3153                 }
3154
3155                 if (newcount < count) {
3156                         /* we are in memory shortage so we switch back to
3157                            traditional skb allocation and drop packages */
3158                         atomic_set(&card->force_alloc_skb, 3);
3159                         count = newcount;
3160                 } else {
3161                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3162                 }
3163
3164                 if (!count) {
3165                         i = 0;
3166                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3167                                 i++;
3168                         if (i == card->qdio.in_buf_pool.buf_count) {
3169                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3170                                 card->reclaim_index = index;
3171                                 schedule_delayed_work(
3172                                         &card->buffer_reclaim_work,
3173                                         QETH_RECLAIM_WORK_TIME);
3174                         }
3175                         return;
3176                 }
3177
3178                 /*
3179                  * according to old code it should be avoided to requeue all
3180                  * 128 buffers in order to benefit from PCI avoidance.
3181                  * this function keeps at least one buffer (the buffer at
3182                  * 'index') un-requeued -> this buffer is the first buffer that
3183                  * will be requeued the next time
3184                  */
3185                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3186                              queue->next_buf_to_init, count);
3187                 if (rc) {
3188                         QETH_CARD_TEXT(card, 2, "qinberr");
3189                 }
3190                 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3191                                                      count);
3192         }
3193 }
3194
3195 static void qeth_buffer_reclaim_work(struct work_struct *work)
3196 {
3197         struct qeth_card *card = container_of(work, struct qeth_card,
3198                 buffer_reclaim_work.work);
3199
3200         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3201         qeth_queue_input_buffer(card, card->reclaim_index);
3202 }
3203
3204 static void qeth_handle_send_error(struct qeth_card *card,
3205                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3206 {
3207         int sbalf15 = buffer->buffer->element[15].sflags;
3208
3209         QETH_CARD_TEXT(card, 6, "hdsnderr");
3210         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3211
3212         if (!qdio_err)
3213                 return;
3214
3215         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3216                 return;
3217
3218         QETH_CARD_TEXT(card, 1, "lnkfail");
3219         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3220                        (u16)qdio_err, (u8)sbalf15);
3221 }
3222
3223 /**
3224  * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3225  * @queue: queue to check for packing buffer
3226  *
3227  * Returns number of buffers that were prepared for flush.
3228  */
3229 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3230 {
3231         struct qeth_qdio_out_buffer *buffer;
3232
3233         buffer = queue->bufs[queue->next_buf_to_fill];
3234         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3235             (buffer->next_element_to_fill > 0)) {
3236                 /* it's a packing buffer */
3237                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3238                 queue->next_buf_to_fill =
3239                         QDIO_BUFNR(queue->next_buf_to_fill + 1);
3240                 return 1;
3241         }
3242         return 0;
3243 }
3244
3245 /*
3246  * Switched to packing state if the number of used buffers on a queue
3247  * reaches a certain limit.
3248  */
3249 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3250 {
3251         if (!queue->do_pack) {
3252                 if (atomic_read(&queue->used_buffers)
3253                     >= QETH_HIGH_WATERMARK_PACK){
3254                         /* switch non-PACKING -> PACKING */
3255                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3256                         QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3257                         queue->do_pack = 1;
3258                 }
3259         }
3260 }
3261
3262 /*
3263  * Switches from packing to non-packing mode. If there is a packing
3264  * buffer on the queue this buffer will be prepared to be flushed.
3265  * In that case 1 is returned to inform the caller. If no buffer
3266  * has to be flushed, zero is returned.
3267  */
3268 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3269 {
3270         if (queue->do_pack) {
3271                 if (atomic_read(&queue->used_buffers)
3272                     <= QETH_LOW_WATERMARK_PACK) {
3273                         /* switch PACKING -> non-PACKING */
3274                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3275                         QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3276                         queue->do_pack = 0;
3277                         return qeth_prep_flush_pack_buffer(queue);
3278                 }
3279         }
3280         return 0;
3281 }
3282
3283 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3284                                int count)
3285 {
3286         struct qeth_card *card = queue->card;
3287         struct qeth_qdio_out_buffer *buf;
3288         int rc;
3289         int i;
3290         unsigned int qdio_flags;
3291
3292         for (i = index; i < index + count; ++i) {
3293                 unsigned int bidx = QDIO_BUFNR(i);
3294
3295                 buf = queue->bufs[bidx];
3296                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3297                                 SBAL_EFLAGS_LAST_ENTRY;
3298
3299                 if (queue->bufstates)
3300                         queue->bufstates[bidx].user = buf;
3301
3302                 if (IS_IQD(queue->card))
3303                         continue;
3304
3305                 if (!queue->do_pack) {
3306                         if ((atomic_read(&queue->used_buffers) >=
3307                                 (QETH_HIGH_WATERMARK_PACK -
3308                                  QETH_WATERMARK_PACK_FUZZ)) &&
3309                             !atomic_read(&queue->set_pci_flags_count)) {
3310                                 /* it's likely that we'll go to packing
3311                                  * mode soon */
3312                                 atomic_inc(&queue->set_pci_flags_count);
3313                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3314                         }
3315                 } else {
3316                         if (!atomic_read(&queue->set_pci_flags_count)) {
3317                                 /*
3318                                  * there's no outstanding PCI any more, so we
3319                                  * have to request a PCI to be sure the the PCI
3320                                  * will wake at some time in the future then we
3321                                  * can flush packed buffers that might still be
3322                                  * hanging around, which can happen if no
3323                                  * further send was requested by the stack
3324                                  */
3325                                 atomic_inc(&queue->set_pci_flags_count);
3326                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3327                         }
3328                 }
3329         }
3330
3331         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3332         if (atomic_read(&queue->set_pci_flags_count))
3333                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3334         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3335                      queue->queue_no, index, count);
3336
3337         /* Fake the TX completion interrupt: */
3338         if (IS_IQD(card))
3339                 napi_schedule(&queue->napi);
3340
3341         if (rc) {
3342                 /* ignore temporary SIGA errors without busy condition */
3343                 if (rc == -ENOBUFS)
3344                         return;
3345                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3346                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3347                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3348                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3349                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3350
3351                 /* this must not happen under normal circumstances. if it
3352                  * happens something is really wrong -> recover */
3353                 qeth_schedule_recovery(queue->card);
3354                 return;
3355         }
3356 }
3357
3358 static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3359 {
3360         qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3361
3362         queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3363         queue->prev_hdr = NULL;
3364         queue->bulk_count = 0;
3365 }
3366
3367 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3368 {
3369         int index;
3370         int flush_cnt = 0;
3371         int q_was_packing = 0;
3372
3373         /*
3374          * check if weed have to switch to non-packing mode or if
3375          * we have to get a pci flag out on the queue
3376          */
3377         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3378             !atomic_read(&queue->set_pci_flags_count)) {
3379                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3380                                 QETH_OUT_Q_UNLOCKED) {
3381                         /*
3382                          * If we get in here, there was no action in
3383                          * do_send_packet. So, we check if there is a
3384                          * packing buffer to be flushed here.
3385                          */
3386                         index = queue->next_buf_to_fill;
3387                         q_was_packing = queue->do_pack;
3388                         /* queue->do_pack may change */
3389                         barrier();
3390                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3391                         if (!flush_cnt &&
3392                             !atomic_read(&queue->set_pci_flags_count))
3393                                 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3394                         if (q_was_packing)
3395                                 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3396                         if (flush_cnt)
3397                                 qeth_flush_buffers(queue, index, flush_cnt);
3398                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3399                 }
3400         }
3401 }
3402
3403 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3404                                  unsigned long card_ptr)
3405 {
3406         struct qeth_card *card = (struct qeth_card *)card_ptr;
3407
3408         if (card->dev->flags & IFF_UP)
3409                 napi_schedule_irqoff(&card->napi);
3410 }
3411
3412 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3413 {
3414         int rc;
3415
3416         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3417                 rc = -1;
3418                 goto out;
3419         } else {
3420                 if (card->options.cq == cq) {
3421                         rc = 0;
3422                         goto out;
3423                 }
3424
3425                 qeth_free_qdio_queues(card);
3426                 card->options.cq = cq;
3427                 rc = 0;
3428         }
3429 out:
3430         return rc;
3431
3432 }
3433 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3434
3435 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3436                                  unsigned int queue, int first_element,
3437                                  int count)
3438 {
3439         struct qeth_qdio_q *cq = card->qdio.c_q;
3440         int i;
3441         int rc;
3442
3443         if (!qeth_is_cq(card, queue))
3444                 return;
3445
3446         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3447         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3448         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3449
3450         if (qdio_err) {
3451                 netif_tx_stop_all_queues(card->dev);
3452                 qeth_schedule_recovery(card);
3453                 return;
3454         }
3455
3456         for (i = first_element; i < first_element + count; ++i) {
3457                 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3458                 int e = 0;
3459
3460                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3461                        buffer->element[e].addr) {
3462                         unsigned long phys_aob_addr;
3463
3464                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3465                         qeth_qdio_handle_aob(card, phys_aob_addr);
3466                         ++e;
3467                 }
3468                 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3469         }
3470         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3471                     card->qdio.c_q->next_buf_to_init,
3472                     count);
3473         if (rc) {
3474                 dev_warn(&card->gdev->dev,
3475                         "QDIO reported an error, rc=%i\n", rc);
3476                 QETH_CARD_TEXT(card, 2, "qcqherr");
3477         }
3478
3479         cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3480 }
3481
3482 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3483                                     unsigned int qdio_err, int queue,
3484                                     int first_elem, int count,
3485                                     unsigned long card_ptr)
3486 {
3487         struct qeth_card *card = (struct qeth_card *)card_ptr;
3488
3489         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3490         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3491
3492         if (qeth_is_cq(card, queue))
3493                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3494         else if (qdio_err)
3495                 qeth_schedule_recovery(card);
3496 }
3497
3498 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3499                                      unsigned int qdio_error, int __queue,
3500                                      int first_element, int count,
3501                                      unsigned long card_ptr)
3502 {
3503         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3504         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3505         struct net_device *dev = card->dev;
3506         struct netdev_queue *txq;
3507         int i;
3508
3509         QETH_CARD_TEXT(card, 6, "qdouhdl");
3510         if (qdio_error & QDIO_ERROR_FATAL) {
3511                 QETH_CARD_TEXT(card, 2, "achkcond");
3512                 netif_tx_stop_all_queues(dev);
3513                 qeth_schedule_recovery(card);
3514                 return;
3515         }
3516
3517         for (i = first_element; i < (first_element + count); ++i) {
3518                 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)];
3519
3520                 qeth_handle_send_error(card, buf, qdio_error);
3521                 qeth_clear_output_buffer(queue, buf, qdio_error, 0);
3522         }
3523
3524         atomic_sub(count, &queue->used_buffers);
3525         qeth_check_outbound_queue(queue);
3526
3527         txq = netdev_get_tx_queue(dev, __queue);
3528         /* xmit may have observed the full-condition, but not yet stopped the
3529          * txq. In which case the code below won't trigger. So before returning,
3530          * xmit will re-check the txq's fill level and wake it up if needed.
3531          */
3532         if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3533                 netif_tx_wake_queue(txq);
3534 }
3535
3536 /**
3537  * Note: Function assumes that we have 4 outbound queues.
3538  */
3539 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3540 {
3541         struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3542         u8 tos;
3543
3544         switch (card->qdio.do_prio_queueing) {
3545         case QETH_PRIO_Q_ING_TOS:
3546         case QETH_PRIO_Q_ING_PREC:
3547                 switch (qeth_get_ip_version(skb)) {
3548                 case 4:
3549                         tos = ipv4_get_dsfield(ip_hdr(skb));
3550                         break;
3551                 case 6:
3552                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3553                         break;
3554                 default:
3555                         return card->qdio.default_out_queue;
3556                 }
3557                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3558                         return ~tos >> 6 & 3;
3559                 if (tos & IPTOS_MINCOST)
3560                         return 3;
3561                 if (tos & IPTOS_RELIABILITY)
3562                         return 2;
3563                 if (tos & IPTOS_THROUGHPUT)
3564                         return 1;
3565                 if (tos & IPTOS_LOWDELAY)
3566                         return 0;
3567                 break;
3568         case QETH_PRIO_Q_ING_SKB:
3569                 if (skb->priority > 5)
3570                         return 0;
3571                 return ~skb->priority >> 1 & 3;
3572         case QETH_PRIO_Q_ING_VLAN:
3573                 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3574                         return ~ntohs(veth->h_vlan_TCI) >>
3575                                (VLAN_PRIO_SHIFT + 1) & 3;
3576                 break;
3577         default:
3578                 break;
3579         }
3580         return card->qdio.default_out_queue;
3581 }
3582 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3583
3584 /**
3585  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3586  * @skb:                                SKB address
3587  *
3588  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3589  * fragmented part of the SKB. Returns zero for linear SKB.
3590  */
3591 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3592 {
3593         int cnt, elements = 0;
3594
3595         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3596                 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3597
3598                 elements += qeth_get_elements_for_range(
3599                         (addr_t)skb_frag_address(frag),
3600                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3601         }
3602         return elements;
3603 }
3604
3605 /**
3606  * qeth_count_elements() -      Counts the number of QDIO buffer elements needed
3607  *                              to transmit an skb.
3608  * @skb:                        the skb to operate on.
3609  * @data_offset:                skip this part of the skb's linear data
3610  *
3611  * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3612  * skb's data (both its linear part and paged fragments).
3613  */
3614 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3615 {
3616         unsigned int elements = qeth_get_elements_for_frags(skb);
3617         addr_t end = (addr_t)skb->data + skb_headlen(skb);
3618         addr_t start = (addr_t)skb->data + data_offset;
3619
3620         if (start != end)
3621                 elements += qeth_get_elements_for_range(start, end);
3622         return elements;
3623 }
3624 EXPORT_SYMBOL_GPL(qeth_count_elements);
3625
3626 #define QETH_HDR_CACHE_OBJ_SIZE         (sizeof(struct qeth_hdr_tso) + \
3627                                          MAX_TCP_HEADER)
3628
3629 /**
3630  * qeth_add_hw_header() - add a HW header to an skb.
3631  * @skb: skb that the HW header should be added to.
3632  * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3633  *       it contains a valid pointer to a qeth_hdr.
3634  * @hdr_len: length of the HW header.
3635  * @proto_len: length of protocol headers that need to be in same page as the
3636  *             HW header.
3637  *
3638  * Returns the pushed length. If the header can't be pushed on
3639  * (eg. because it would cross a page boundary), it is allocated from
3640  * the cache instead and 0 is returned.
3641  * The number of needed buffer elements is returned in @elements.
3642  * Error to create the hdr is indicated by returning with < 0.
3643  */
3644 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3645                               struct sk_buff *skb, struct qeth_hdr **hdr,
3646                               unsigned int hdr_len, unsigned int proto_len,
3647                               unsigned int *elements)
3648 {
3649         const unsigned int contiguous = proto_len ? proto_len : 1;
3650         const unsigned int max_elements = queue->max_elements;
3651         unsigned int __elements;
3652         addr_t start, end;
3653         bool push_ok;
3654         int rc;
3655
3656 check_layout:
3657         start = (addr_t)skb->data - hdr_len;
3658         end = (addr_t)skb->data;
3659
3660         if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3661                 /* Push HW header into same page as first protocol header. */
3662                 push_ok = true;
3663                 /* ... but TSO always needs a separate element for headers: */
3664                 if (skb_is_gso(skb))
3665                         __elements = 1 + qeth_count_elements(skb, proto_len);
3666                 else
3667                         __elements = qeth_count_elements(skb, 0);
3668         } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3669                 /* Push HW header into preceding page, flush with skb->data. */
3670                 push_ok = true;
3671                 __elements = 1 + qeth_count_elements(skb, 0);
3672         } else {
3673                 /* Use header cache, copy protocol headers up. */
3674                 push_ok = false;
3675                 __elements = 1 + qeth_count_elements(skb, proto_len);
3676         }
3677
3678         /* Compress skb to fit into one IO buffer: */
3679         if (__elements > max_elements) {
3680                 if (!skb_is_nonlinear(skb)) {
3681                         /* Drop it, no easy way of shrinking it further. */
3682                         QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3683                                          max_elements, __elements, skb->len);
3684                         return -E2BIG;
3685                 }
3686
3687                 rc = skb_linearize(skb);
3688                 if (rc) {
3689                         QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3690                         return rc;
3691                 }
3692
3693                 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3694                 /* Linearization changed the layout, re-evaluate: */
3695                 goto check_layout;
3696         }
3697
3698         *elements = __elements;
3699         /* Add the header: */
3700         if (push_ok) {
3701                 *hdr = skb_push(skb, hdr_len);
3702                 return hdr_len;
3703         }
3704         /* fall back */
3705         if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3706                 return -E2BIG;
3707         *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3708         if (!*hdr)
3709                 return -ENOMEM;
3710         /* Copy protocol headers behind HW header: */
3711         skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3712         return 0;
3713 }
3714
3715 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
3716                               struct sk_buff *curr_skb,
3717                               struct qeth_hdr *curr_hdr)
3718 {
3719         struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
3720         struct qeth_hdr *prev_hdr = queue->prev_hdr;
3721
3722         if (!prev_hdr)
3723                 return true;
3724
3725         /* All packets must have the same target: */
3726         if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3727                 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3728
3729                 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3730                                         eth_hdr(curr_skb)->h_dest) &&
3731                        qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3732         }
3733
3734         return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3735                qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3736 }
3737
3738 static unsigned int __qeth_fill_buffer(struct sk_buff *skb,
3739                                        struct qeth_qdio_out_buffer *buf,
3740                                        bool is_first_elem, unsigned int offset)
3741 {
3742         struct qdio_buffer *buffer = buf->buffer;
3743         int element = buf->next_element_to_fill;
3744         int length = skb_headlen(skb) - offset;
3745         char *data = skb->data + offset;
3746         unsigned int elem_length, cnt;
3747
3748         /* map linear part into buffer element(s) */
3749         while (length > 0) {
3750                 elem_length = min_t(unsigned int, length,
3751                                     PAGE_SIZE - offset_in_page(data));
3752
3753                 buffer->element[element].addr = data;
3754                 buffer->element[element].length = elem_length;
3755                 length -= elem_length;
3756                 if (is_first_elem) {
3757                         is_first_elem = false;
3758                         if (length || skb_is_nonlinear(skb))
3759                                 /* skb needs additional elements */
3760                                 buffer->element[element].eflags =
3761                                         SBAL_EFLAGS_FIRST_FRAG;
3762                         else
3763                                 buffer->element[element].eflags = 0;
3764                 } else {
3765                         buffer->element[element].eflags =
3766                                 SBAL_EFLAGS_MIDDLE_FRAG;
3767                 }
3768
3769                 data += elem_length;
3770                 element++;
3771         }
3772
3773         /* map page frags into buffer element(s) */
3774         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3775                 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3776
3777                 data = skb_frag_address(frag);
3778                 length = skb_frag_size(frag);
3779                 while (length > 0) {
3780                         elem_length = min_t(unsigned int, length,
3781                                             PAGE_SIZE - offset_in_page(data));
3782
3783                         buffer->element[element].addr = data;
3784                         buffer->element[element].length = elem_length;
3785                         buffer->element[element].eflags =
3786                                 SBAL_EFLAGS_MIDDLE_FRAG;
3787
3788                         length -= elem_length;
3789                         data += elem_length;
3790                         element++;
3791                 }
3792         }
3793
3794         if (buffer->element[element - 1].eflags)
3795                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3796         buf->next_element_to_fill = element;
3797         return element;
3798 }
3799
3800 /**
3801  * qeth_fill_buffer() - map skb into an output buffer
3802  * @buf:        buffer to transport the skb
3803  * @skb:        skb to map into the buffer
3804  * @hdr:        qeth_hdr for this skb. Either at skb->data, or allocated
3805  *              from qeth_core_header_cache.
3806  * @offset:     when mapping the skb, start at skb->data + offset
3807  * @hd_len:     if > 0, build a dedicated header element of this size
3808  */
3809 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3810                                      struct sk_buff *skb, struct qeth_hdr *hdr,
3811                                      unsigned int offset, unsigned int hd_len)
3812 {
3813         struct qdio_buffer *buffer = buf->buffer;
3814         bool is_first_elem = true;
3815
3816         __skb_queue_tail(&buf->skb_list, skb);
3817
3818         /* build dedicated header element */
3819         if (hd_len) {
3820                 int element = buf->next_element_to_fill;
3821                 is_first_elem = false;
3822
3823                 buffer->element[element].addr = hdr;
3824                 buffer->element[element].length = hd_len;
3825                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3826                 /* remember to free cache-allocated qeth_hdr: */
3827                 buf->is_header[element] = ((void *)hdr != skb->data);
3828                 buf->next_element_to_fill++;
3829         }
3830
3831         return __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3832 }
3833
3834 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3835                        struct sk_buff *skb, unsigned int elements,
3836                        struct qeth_hdr *hdr, unsigned int offset,
3837                        unsigned int hd_len)
3838 {
3839         unsigned int bytes = qdisc_pkt_len(skb);
3840         struct qeth_qdio_out_buffer *buffer;
3841         unsigned int next_element;
3842         struct netdev_queue *txq;
3843         bool stopped = false;
3844         bool flush;
3845
3846         buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
3847         txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3848
3849         /* Just a sanity check, the wake/stop logic should ensure that we always
3850          * get a free buffer.
3851          */
3852         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3853                 return -EBUSY;
3854
3855         flush = !qeth_iqd_may_bulk(queue, skb, hdr);
3856
3857         if (flush ||
3858             (buffer->next_element_to_fill + elements > queue->max_elements)) {
3859                 if (buffer->next_element_to_fill > 0) {
3860                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3861                         queue->bulk_count++;
3862                 }
3863
3864                 if (queue->bulk_count >= queue->bulk_max)
3865                         flush = true;
3866
3867                 if (flush)
3868                         qeth_flush_queue(queue);
3869
3870                 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
3871                                                 queue->bulk_count)];
3872
3873                 /* Sanity-check again: */
3874                 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3875                         return -EBUSY;
3876         }
3877
3878         if (buffer->next_element_to_fill == 0 &&
3879             atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3880                 /* If a TX completion happens right _here_ and misses to wake
3881                  * the txq, then our re-check below will catch the race.
3882                  */
3883                 QETH_TXQ_STAT_INC(queue, stopped);
3884                 netif_tx_stop_queue(txq);
3885                 stopped = true;
3886         }
3887
3888         next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
3889         buffer->bytes += bytes;
3890         queue->prev_hdr = hdr;
3891
3892         flush = __netdev_tx_sent_queue(txq, bytes,
3893                                        !stopped && netdev_xmit_more());
3894
3895         if (flush || next_element >= queue->max_elements) {
3896                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3897                 queue->bulk_count++;
3898
3899                 if (queue->bulk_count >= queue->bulk_max)
3900                         flush = true;
3901
3902                 if (flush)
3903                         qeth_flush_queue(queue);
3904         }
3905
3906         if (stopped && !qeth_out_queue_is_full(queue))
3907                 netif_tx_start_queue(txq);
3908         return 0;
3909 }
3910
3911 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3912                         struct sk_buff *skb, struct qeth_hdr *hdr,
3913                         unsigned int offset, unsigned int hd_len,
3914                         int elements_needed)
3915 {
3916         struct qeth_qdio_out_buffer *buffer;
3917         unsigned int next_element;
3918         struct netdev_queue *txq;
3919         bool stopped = false;
3920         int start_index;
3921         int flush_count = 0;
3922         int do_pack = 0;
3923         int tmp;
3924         int rc = 0;
3925
3926         /* spin until we get the queue ... */
3927         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3928                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3929         start_index = queue->next_buf_to_fill;
3930         buffer = queue->bufs[queue->next_buf_to_fill];
3931
3932         /* Just a sanity check, the wake/stop logic should ensure that we always
3933          * get a free buffer.
3934          */
3935         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3936                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3937                 return -EBUSY;
3938         }
3939
3940         txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3941
3942         /* check if we need to switch packing state of this queue */
3943         qeth_switch_to_packing_if_needed(queue);
3944         if (queue->do_pack) {
3945                 do_pack = 1;
3946                 /* does packet fit in current buffer? */
3947                 if (buffer->next_element_to_fill + elements_needed >
3948                     queue->max_elements) {
3949                         /* ... no -> set state PRIMED */
3950                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3951                         flush_count++;
3952                         queue->next_buf_to_fill =
3953                                 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3954                         buffer = queue->bufs[queue->next_buf_to_fill];
3955
3956                         /* We stepped forward, so sanity-check again: */
3957                         if (atomic_read(&buffer->state) !=
3958                             QETH_QDIO_BUF_EMPTY) {
3959                                 qeth_flush_buffers(queue, start_index,
3960                                                            flush_count);
3961                                 atomic_set(&queue->state,
3962                                                 QETH_OUT_Q_UNLOCKED);
3963                                 rc = -EBUSY;
3964                                 goto out;
3965                         }
3966                 }
3967         }
3968
3969         if (buffer->next_element_to_fill == 0 &&
3970             atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3971                 /* If a TX completion happens right _here_ and misses to wake
3972                  * the txq, then our re-check below will catch the race.
3973                  */
3974                 QETH_TXQ_STAT_INC(queue, stopped);
3975                 netif_tx_stop_queue(txq);
3976                 stopped = true;
3977         }
3978
3979         next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
3980
3981         if (queue->do_pack)
3982                 QETH_TXQ_STAT_INC(queue, skbs_pack);
3983         if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
3984                 flush_count++;
3985                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3986                 queue->next_buf_to_fill =
3987                                 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3988         }
3989
3990         if (flush_count)
3991                 qeth_flush_buffers(queue, start_index, flush_count);
3992         else if (!atomic_read(&queue->set_pci_flags_count))
3993                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3994         /*
3995          * queue->state will go from LOCKED -> UNLOCKED or from
3996          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3997          * (switch packing state or flush buffer to get another pci flag out).
3998          * In that case we will enter this loop
3999          */
4000         while (atomic_dec_return(&queue->state)) {
4001                 start_index = queue->next_buf_to_fill;
4002                 /* check if we can go back to non-packing state */
4003                 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4004                 /*
4005                  * check if we need to flush a packing buffer to get a pci
4006                  * flag out on the queue
4007                  */
4008                 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4009                         tmp = qeth_prep_flush_pack_buffer(queue);
4010                 if (tmp) {
4011                         qeth_flush_buffers(queue, start_index, tmp);
4012                         flush_count += tmp;
4013                 }
4014         }
4015 out:
4016         /* at this point the queue is UNLOCKED again */
4017         if (do_pack)
4018                 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4019
4020         if (stopped && !qeth_out_queue_is_full(queue))
4021                 netif_tx_start_queue(txq);
4022         return rc;
4023 }
4024 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4025
4026 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4027                               unsigned int payload_len, struct sk_buff *skb,
4028                               unsigned int proto_len)
4029 {
4030         struct qeth_hdr_ext_tso *ext = &hdr->ext;
4031
4032         ext->hdr_tot_len = sizeof(*ext);
4033         ext->imb_hdr_no = 1;
4034         ext->hdr_type = 1;
4035         ext->hdr_version = 1;
4036         ext->hdr_len = 28;
4037         ext->payload_len = payload_len;
4038         ext->mss = skb_shinfo(skb)->gso_size;
4039         ext->dg_hdr_len = proto_len;
4040 }
4041
4042 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4043               struct qeth_qdio_out_q *queue, int ipv,
4044               void (*fill_header)(struct qeth_qdio_out_q *queue,
4045                                   struct qeth_hdr *hdr, struct sk_buff *skb,
4046                                   int ipv, unsigned int data_len))
4047 {
4048         unsigned int proto_len, hw_hdr_len;
4049         unsigned int frame_len = skb->len;
4050         bool is_tso = skb_is_gso(skb);
4051         unsigned int data_offset = 0;
4052         struct qeth_hdr *hdr = NULL;
4053         unsigned int hd_len = 0;
4054         unsigned int elements;
4055         int push_len, rc;
4056
4057         if (is_tso) {
4058                 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4059                 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4060         } else {
4061                 hw_hdr_len = sizeof(struct qeth_hdr);
4062                 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4063         }
4064
4065         rc = skb_cow_head(skb, hw_hdr_len);
4066         if (rc)
4067                 return rc;
4068
4069         push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4070                                       &elements);
4071         if (push_len < 0)
4072                 return push_len;
4073         if (is_tso || !push_len) {
4074                 /* HW header needs its own buffer element. */
4075                 hd_len = hw_hdr_len + proto_len;
4076                 data_offset = push_len + proto_len;
4077         }
4078         memset(hdr, 0, hw_hdr_len);
4079         fill_header(queue, hdr, skb, ipv, frame_len);
4080         if (is_tso)
4081                 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4082                                   frame_len - proto_len, skb, proto_len);
4083
4084         if (IS_IQD(card)) {
4085                 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4086                                  hd_len);
4087         } else {
4088                 /* TODO: drop skb_orphan() once TX completion is fast enough */
4089                 skb_orphan(skb);
4090                 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4091                                          hd_len, elements);
4092         }
4093
4094         if (rc && !push_len)
4095                 kmem_cache_free(qeth_core_header_cache, hdr);
4096
4097         return rc;
4098 }
4099 EXPORT_SYMBOL_GPL(qeth_xmit);
4100
4101 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4102                 struct qeth_reply *reply, unsigned long data)
4103 {
4104         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4105         struct qeth_ipacmd_setadpparms *setparms;
4106
4107         QETH_CARD_TEXT(card, 4, "prmadpcb");
4108
4109         setparms = &(cmd->data.setadapterparms);
4110         if (qeth_setadpparms_inspect_rc(cmd)) {
4111                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4112                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4113         }
4114         card->info.promisc_mode = setparms->data.mode;
4115         return (cmd->hdr.return_code) ? -EIO : 0;
4116 }
4117
4118 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4119 {
4120         enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4121                                                     SET_PROMISC_MODE_OFF;
4122         struct qeth_cmd_buffer *iob;
4123         struct qeth_ipa_cmd *cmd;
4124
4125         QETH_CARD_TEXT(card, 4, "setprom");
4126         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4127
4128         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4129                                    SETADP_DATA_SIZEOF(mode));
4130         if (!iob)
4131                 return;
4132         cmd = __ipa_cmd(iob);
4133         cmd->data.setadapterparms.data.mode = mode;
4134         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4135 }
4136 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4137
4138 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4139                 struct qeth_reply *reply, unsigned long data)
4140 {
4141         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4142         struct qeth_ipacmd_setadpparms *adp_cmd;
4143
4144         QETH_CARD_TEXT(card, 4, "chgmaccb");
4145         if (qeth_setadpparms_inspect_rc(cmd))
4146                 return -EIO;
4147
4148         adp_cmd = &cmd->data.setadapterparms;
4149         if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4150                 return -EADDRNOTAVAIL;
4151
4152         if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4153             !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4154                 return -EADDRNOTAVAIL;
4155
4156         ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4157         return 0;
4158 }
4159
4160 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4161 {
4162         int rc;
4163         struct qeth_cmd_buffer *iob;
4164         struct qeth_ipa_cmd *cmd;
4165
4166         QETH_CARD_TEXT(card, 4, "chgmac");
4167
4168         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4169                                    SETADP_DATA_SIZEOF(change_addr));
4170         if (!iob)
4171                 return -ENOMEM;
4172         cmd = __ipa_cmd(iob);
4173         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4174         cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4175         ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4176                         card->dev->dev_addr);
4177         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4178                                NULL);
4179         return rc;
4180 }
4181 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4182
4183 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4184                 struct qeth_reply *reply, unsigned long data)
4185 {
4186         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4187         struct qeth_set_access_ctrl *access_ctrl_req;
4188         int fallback = *(int *)reply->param;
4189
4190         QETH_CARD_TEXT(card, 4, "setaccb");
4191         if (cmd->hdr.return_code)
4192                 return -EIO;
4193         qeth_setadpparms_inspect_rc(cmd);
4194
4195         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4196         QETH_CARD_TEXT_(card, 2, "rc=%d",
4197                         cmd->data.setadapterparms.hdr.return_code);
4198         if (cmd->data.setadapterparms.hdr.return_code !=
4199                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4200                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4201                                  access_ctrl_req->subcmd_code, CARD_DEVID(card),
4202                                  cmd->data.setadapterparms.hdr.return_code);
4203         switch (cmd->data.setadapterparms.hdr.return_code) {
4204         case SET_ACCESS_CTRL_RC_SUCCESS:
4205                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4206                         dev_info(&card->gdev->dev,
4207                             "QDIO data connection isolation is deactivated\n");
4208                 } else {
4209                         dev_info(&card->gdev->dev,
4210                             "QDIO data connection isolation is activated\n");
4211                 }
4212                 break;
4213         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4214                 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4215                                  CARD_DEVID(card));
4216                 if (fallback)
4217                         card->options.isolation = card->options.prev_isolation;
4218                 break;
4219         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4220                 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4221                                  CARD_DEVID(card));
4222                 if (fallback)
4223                         card->options.isolation = card->options.prev_isolation;
4224                 break;
4225         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4226                 dev_err(&card->gdev->dev, "Adapter does not "
4227                         "support QDIO data connection isolation\n");
4228                 break;
4229         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4230                 dev_err(&card->gdev->dev,
4231                         "Adapter is dedicated. "
4232                         "QDIO data connection isolation not supported\n");
4233                 if (fallback)
4234                         card->options.isolation = card->options.prev_isolation;
4235                 break;
4236         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4237                 dev_err(&card->gdev->dev,
4238                         "TSO does not permit QDIO data connection isolation\n");
4239                 if (fallback)
4240                         card->options.isolation = card->options.prev_isolation;
4241                 break;
4242         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4243                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4244                         "support reflective relay mode\n");
4245                 if (fallback)
4246                         card->options.isolation = card->options.prev_isolation;
4247                 break;
4248         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4249                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4250                                         "enabled at the adjacent switch port");
4251                 if (fallback)
4252                         card->options.isolation = card->options.prev_isolation;
4253                 break;
4254         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4255                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4256                                         "at the adjacent switch failed\n");
4257                 break;
4258         default:
4259                 /* this should never happen */
4260                 if (fallback)
4261                         card->options.isolation = card->options.prev_isolation;
4262                 break;
4263         }
4264         return (cmd->hdr.return_code) ? -EIO : 0;
4265 }
4266
4267 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4268                 enum qeth_ipa_isolation_modes isolation, int fallback)
4269 {
4270         int rc;
4271         struct qeth_cmd_buffer *iob;
4272         struct qeth_ipa_cmd *cmd;
4273         struct qeth_set_access_ctrl *access_ctrl_req;
4274
4275         QETH_CARD_TEXT(card, 4, "setacctl");
4276
4277         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4278                                    SETADP_DATA_SIZEOF(set_access_ctrl));
4279         if (!iob)
4280                 return -ENOMEM;
4281         cmd = __ipa_cmd(iob);
4282         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4283         access_ctrl_req->subcmd_code = isolation;
4284
4285         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4286                                &fallback);
4287         QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4288         return rc;
4289 }
4290
4291 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4292 {
4293         int rc = 0;
4294
4295         QETH_CARD_TEXT(card, 4, "setactlo");
4296
4297         if ((IS_OSD(card) || IS_OSX(card)) &&
4298             qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4299                 rc = qeth_setadpparms_set_access_ctrl(card,
4300                         card->options.isolation, fallback);
4301                 if (rc) {
4302                         QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4303                                          rc, CARD_DEVID(card));
4304                         rc = -EOPNOTSUPP;
4305                 }
4306         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4307                 card->options.isolation = ISOLATION_MODE_NONE;
4308
4309                 dev_err(&card->gdev->dev, "Adapter does not "
4310                         "support QDIO data connection isolation\n");
4311                 rc = -EOPNOTSUPP;
4312         }
4313         return rc;
4314 }
4315
4316 void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4317 {
4318         struct qeth_card *card;
4319
4320         card = dev->ml_priv;
4321         QETH_CARD_TEXT(card, 4, "txtimeo");
4322         qeth_schedule_recovery(card);
4323 }
4324 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4325
4326 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4327 {
4328         struct qeth_card *card = dev->ml_priv;
4329         int rc = 0;
4330
4331         switch (regnum) {
4332         case MII_BMCR: /* Basic mode control register */
4333                 rc = BMCR_FULLDPLX;
4334                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4335                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4336                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4337                     (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4338                         rc |= BMCR_SPEED100;
4339                 break;
4340         case MII_BMSR: /* Basic mode status register */
4341                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4342                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4343                      BMSR_100BASE4;
4344                 break;
4345         case MII_PHYSID1: /* PHYS ID 1 */
4346                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4347                      dev->dev_addr[2];
4348                 rc = (rc >> 5) & 0xFFFF;
4349                 break;
4350         case MII_PHYSID2: /* PHYS ID 2 */
4351                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4352                 break;
4353         case MII_ADVERTISE: /* Advertisement control reg */
4354                 rc = ADVERTISE_ALL;
4355                 break;
4356         case MII_LPA: /* Link partner ability reg */
4357                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4358                      LPA_100BASE4 | LPA_LPACK;
4359                 break;
4360         case MII_EXPANSION: /* Expansion register */
4361                 break;
4362         case MII_DCOUNTER: /* disconnect counter */
4363                 break;
4364         case MII_FCSCOUNTER: /* false carrier counter */
4365                 break;
4366         case MII_NWAYTEST: /* N-way auto-neg test register */
4367                 break;
4368         case MII_RERRCOUNTER: /* rx error counter */
4369                 rc = card->stats.rx_length_errors +
4370                      card->stats.rx_frame_errors +
4371                      card->stats.rx_fifo_errors;
4372                 break;
4373         case MII_SREVISION: /* silicon revision */
4374                 break;
4375         case MII_RESV1: /* reserved 1 */
4376                 break;
4377         case MII_LBRERROR: /* loopback, rx, bypass error */
4378                 break;
4379         case MII_PHYADDR: /* physical address */
4380                 break;
4381         case MII_RESV2: /* reserved 2 */
4382                 break;
4383         case MII_TPISTATUS: /* TPI status for 10mbps */
4384                 break;
4385         case MII_NCONFIG: /* network interface config */
4386                 break;
4387         default:
4388                 break;
4389         }
4390         return rc;
4391 }
4392
4393 static int qeth_snmp_command_cb(struct qeth_card *card,
4394                                 struct qeth_reply *reply, unsigned long data)
4395 {
4396         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4397         struct qeth_arp_query_info *qinfo = reply->param;
4398         struct qeth_ipacmd_setadpparms *adp_cmd;
4399         unsigned int data_len;
4400         void *snmp_data;
4401
4402         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4403
4404         if (cmd->hdr.return_code) {
4405                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4406                 return -EIO;
4407         }
4408         if (cmd->data.setadapterparms.hdr.return_code) {
4409                 cmd->hdr.return_code =
4410                         cmd->data.setadapterparms.hdr.return_code;
4411                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4412                 return -EIO;
4413         }
4414
4415         adp_cmd = &cmd->data.setadapterparms;
4416         data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4417         if (adp_cmd->hdr.seq_no == 1) {
4418                 snmp_data = &adp_cmd->data.snmp;
4419         } else {
4420                 snmp_data = &adp_cmd->data.snmp.request;
4421                 data_len -= offsetof(struct qeth_snmp_cmd, request);
4422         }
4423
4424         /* check if there is enough room in userspace */
4425         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4426                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4427                 return -ENOSPC;
4428         }
4429         QETH_CARD_TEXT_(card, 4, "snore%i",
4430                         cmd->data.setadapterparms.hdr.used_total);
4431         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4432                         cmd->data.setadapterparms.hdr.seq_no);
4433         /*copy entries to user buffer*/
4434         memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4435         qinfo->udata_offset += data_len;
4436
4437         if (cmd->data.setadapterparms.hdr.seq_no <
4438             cmd->data.setadapterparms.hdr.used_total)
4439                 return 1;
4440         return 0;
4441 }
4442
4443 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4444 {
4445         struct qeth_snmp_ureq __user *ureq;
4446         struct qeth_cmd_buffer *iob;
4447         unsigned int req_len;
4448         struct qeth_arp_query_info qinfo = {0, };
4449         int rc = 0;
4450
4451         QETH_CARD_TEXT(card, 3, "snmpcmd");
4452
4453         if (IS_VM_NIC(card))
4454                 return -EOPNOTSUPP;
4455
4456         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4457             IS_LAYER3(card))
4458                 return -EOPNOTSUPP;
4459
4460         ureq = (struct qeth_snmp_ureq __user *) udata;
4461         if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4462             get_user(req_len, &ureq->hdr.req_len))
4463                 return -EFAULT;
4464
4465         /* Sanitize user input, to avoid overflows in iob size calculation: */
4466         if (req_len > QETH_BUFSIZE)
4467                 return -EINVAL;
4468
4469         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4470         if (!iob)
4471                 return -ENOMEM;
4472
4473         if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4474                            &ureq->cmd, req_len)) {
4475                 qeth_put_cmd(iob);
4476                 return -EFAULT;
4477         }
4478
4479         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4480         if (!qinfo.udata) {
4481                 qeth_put_cmd(iob);
4482                 return -ENOMEM;
4483         }
4484         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4485
4486         rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4487         if (rc)
4488                 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4489                                  CARD_DEVID(card), rc);
4490         else {
4491                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4492                         rc = -EFAULT;
4493         }
4494
4495         kfree(qinfo.udata);
4496         return rc;
4497 }
4498
4499 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4500                 struct qeth_reply *reply, unsigned long data)
4501 {
4502         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4503         struct qeth_qoat_priv *priv;
4504         char *resdata;
4505         int resdatalen;
4506
4507         QETH_CARD_TEXT(card, 3, "qoatcb");
4508         if (qeth_setadpparms_inspect_rc(cmd))
4509                 return -EIO;
4510
4511         priv = (struct qeth_qoat_priv *)reply->param;
4512         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4513         resdata = (char *)data + 28;
4514
4515         if (resdatalen > (priv->buffer_len - priv->response_len))
4516                 return -ENOSPC;
4517
4518         memcpy((priv->buffer + priv->response_len), resdata,
4519                 resdatalen);
4520         priv->response_len += resdatalen;
4521
4522         if (cmd->data.setadapterparms.hdr.seq_no <
4523             cmd->data.setadapterparms.hdr.used_total)
4524                 return 1;
4525         return 0;
4526 }
4527
4528 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4529 {
4530         int rc = 0;
4531         struct qeth_cmd_buffer *iob;
4532         struct qeth_ipa_cmd *cmd;
4533         struct qeth_query_oat *oat_req;
4534         struct qeth_query_oat_data oat_data;
4535         struct qeth_qoat_priv priv;
4536         void __user *tmp;
4537
4538         QETH_CARD_TEXT(card, 3, "qoatcmd");
4539
4540         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4541                 rc = -EOPNOTSUPP;
4542                 goto out;
4543         }
4544
4545         if (copy_from_user(&oat_data, udata,
4546             sizeof(struct qeth_query_oat_data))) {
4547                         rc = -EFAULT;
4548                         goto out;
4549         }
4550
4551         priv.buffer_len = oat_data.buffer_len;
4552         priv.response_len = 0;
4553         priv.buffer = vzalloc(oat_data.buffer_len);
4554         if (!priv.buffer) {
4555                 rc = -ENOMEM;
4556                 goto out;
4557         }
4558
4559         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4560                                    SETADP_DATA_SIZEOF(query_oat));
4561         if (!iob) {
4562                 rc = -ENOMEM;
4563                 goto out_free;
4564         }
4565         cmd = __ipa_cmd(iob);
4566         oat_req = &cmd->data.setadapterparms.data.query_oat;
4567         oat_req->subcmd_code = oat_data.command;
4568
4569         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4570                                &priv);
4571         if (!rc) {
4572                 if (is_compat_task())
4573                         tmp = compat_ptr(oat_data.ptr);
4574                 else
4575                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4576
4577                 if (copy_to_user(tmp, priv.buffer,
4578                     priv.response_len)) {
4579                         rc = -EFAULT;
4580                         goto out_free;
4581                 }
4582
4583                 oat_data.response_len = priv.response_len;
4584
4585                 if (copy_to_user(udata, &oat_data,
4586                     sizeof(struct qeth_query_oat_data)))
4587                         rc = -EFAULT;
4588         }
4589
4590 out_free:
4591         vfree(priv.buffer);
4592 out:
4593         return rc;
4594 }
4595
4596 static int qeth_query_card_info_cb(struct qeth_card *card,
4597                                    struct qeth_reply *reply, unsigned long data)
4598 {
4599         struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4600         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4601         struct qeth_query_card_info *card_info;
4602
4603         QETH_CARD_TEXT(card, 2, "qcrdincb");
4604         if (qeth_setadpparms_inspect_rc(cmd))
4605                 return -EIO;
4606
4607         card_info = &cmd->data.setadapterparms.data.card_info;
4608         carrier_info->card_type = card_info->card_type;
4609         carrier_info->port_mode = card_info->port_mode;
4610         carrier_info->port_speed = card_info->port_speed;
4611         return 0;
4612 }
4613
4614 int qeth_query_card_info(struct qeth_card *card,
4615                          struct carrier_info *carrier_info)
4616 {
4617         struct qeth_cmd_buffer *iob;
4618
4619         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4620         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4621                 return -EOPNOTSUPP;
4622         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4623         if (!iob)
4624                 return -ENOMEM;
4625         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4626                                         (void *)carrier_info);
4627 }
4628
4629 /**
4630  * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4631  * @card: pointer to a qeth_card
4632  *
4633  * Returns
4634  *      0, if a MAC address has been set for the card's netdevice
4635  *      a return code, for various error conditions
4636  */
4637 int qeth_vm_request_mac(struct qeth_card *card)
4638 {
4639         struct diag26c_mac_resp *response;
4640         struct diag26c_mac_req *request;
4641         struct ccw_dev_id id;
4642         int rc;
4643
4644         QETH_CARD_TEXT(card, 2, "vmreqmac");
4645
4646         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4647         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4648         if (!request || !response) {
4649                 rc = -ENOMEM;
4650                 goto out;
4651         }
4652
4653         ccw_device_get_id(CARD_DDEV(card), &id);
4654         request->resp_buf_len = sizeof(*response);
4655         request->resp_version = DIAG26C_VERSION2;
4656         request->op_code = DIAG26C_GET_MAC;
4657         request->devno = id.devno;
4658
4659         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4660         rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4661         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4662         if (rc)
4663                 goto out;
4664         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4665
4666         if (request->resp_buf_len < sizeof(*response) ||
4667             response->version != request->resp_version) {
4668                 rc = -EIO;
4669                 QETH_CARD_TEXT(card, 2, "badresp");
4670                 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4671                               sizeof(request->resp_buf_len));
4672         } else if (!is_valid_ether_addr(response->mac)) {
4673                 rc = -EINVAL;
4674                 QETH_CARD_TEXT(card, 2, "badmac");
4675                 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
4676         } else {
4677                 ether_addr_copy(card->dev->dev_addr, response->mac);
4678         }
4679
4680 out:
4681         kfree(response);
4682         kfree(request);
4683         return rc;
4684 }
4685 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4686
4687 static void qeth_determine_capabilities(struct qeth_card *card)
4688 {
4689         struct qeth_channel *channel = &card->data;
4690         struct ccw_device *ddev = channel->ccwdev;
4691         int rc;
4692         int ddev_offline = 0;
4693
4694         QETH_CARD_TEXT(card, 2, "detcapab");
4695         if (!ddev->online) {
4696                 ddev_offline = 1;
4697                 rc = qeth_start_channel(channel);
4698                 if (rc) {
4699                         QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4700                         goto out;
4701                 }
4702         }
4703
4704         rc = qeth_read_conf_data(card);
4705         if (rc) {
4706                 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4707                                  CARD_DEVID(card), rc);
4708                 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4709                 goto out_offline;
4710         }
4711
4712         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4713         if (rc)
4714                 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4715
4716         QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4717         QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4718         QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4719         QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4720         QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
4721         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4722             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4723             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4724                 dev_info(&card->gdev->dev,
4725                         "Completion Queueing supported\n");
4726         } else {
4727                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4728         }
4729
4730
4731 out_offline:
4732         if (ddev_offline == 1)
4733                 qeth_stop_channel(channel);
4734 out:
4735         return;
4736 }
4737
4738 static void qeth_qdio_establish_cq(struct qeth_card *card,
4739                                    struct qdio_buffer **in_sbal_ptrs,
4740                                    void (**queue_start_poll)
4741                                         (struct ccw_device *, int,
4742                                          unsigned long))
4743 {
4744         int i;
4745
4746         if (card->options.cq == QETH_CQ_ENABLED) {
4747                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4748                              (card->qdio.no_in_queues - 1);
4749                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4750                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4751                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4752                 }
4753
4754                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4755         }
4756 }
4757
4758 static int qeth_qdio_establish(struct qeth_card *card)
4759 {
4760         struct qdio_initialize init_data;
4761         char *qib_param_field;
4762         struct qdio_buffer **in_sbal_ptrs;
4763         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4764         struct qdio_buffer **out_sbal_ptrs;
4765         int i, j, k;
4766         int rc = 0;
4767
4768         QETH_CARD_TEXT(card, 2, "qdioest");
4769
4770         qib_param_field = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
4771         if (!qib_param_field) {
4772                 rc =  -ENOMEM;
4773                 goto out_free_nothing;
4774         }
4775
4776         qeth_create_qib_param_field(card, qib_param_field);
4777         qeth_create_qib_param_field_blkt(card, qib_param_field);
4778
4779         in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4780                                sizeof(void *),
4781                                GFP_KERNEL);
4782         if (!in_sbal_ptrs) {
4783                 rc = -ENOMEM;
4784                 goto out_free_qib_param;
4785         }
4786         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4787                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4788                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4789         }
4790
4791         queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4792                                    GFP_KERNEL);
4793         if (!queue_start_poll) {
4794                 rc = -ENOMEM;
4795                 goto out_free_in_sbals;
4796         }
4797         for (i = 0; i < card->qdio.no_in_queues; ++i)
4798                 queue_start_poll[i] = qeth_qdio_start_poll;
4799
4800         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4801
4802         out_sbal_ptrs =
4803                 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4804                         sizeof(void *),
4805                         GFP_KERNEL);
4806         if (!out_sbal_ptrs) {
4807                 rc = -ENOMEM;
4808                 goto out_free_queue_start_poll;
4809         }
4810         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4811                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4812                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4813                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4814                 }
4815
4816         memset(&init_data, 0, sizeof(struct qdio_initialize));
4817         init_data.cdev                   = CARD_DDEV(card);
4818         init_data.q_format               = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4819                                                           QDIO_QETH_QFMT;
4820         init_data.qib_param_field_format = 0;
4821         init_data.qib_param_field        = qib_param_field;
4822         init_data.no_input_qs            = card->qdio.no_in_queues;
4823         init_data.no_output_qs           = card->qdio.no_out_queues;
4824         init_data.input_handler          = qeth_qdio_input_handler;
4825         init_data.output_handler         = qeth_qdio_output_handler;
4826         init_data.queue_start_poll_array = queue_start_poll;
4827         init_data.int_parm               = (unsigned long) card;
4828         init_data.input_sbal_addr_array  = in_sbal_ptrs;
4829         init_data.output_sbal_addr_array = out_sbal_ptrs;
4830         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4831         init_data.scan_threshold         = IS_IQD(card) ? 0 : 32;
4832
4833         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4834                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4835                 rc = qdio_allocate(&init_data);
4836                 if (rc) {
4837                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4838                         goto out;
4839                 }
4840                 rc = qdio_establish(&init_data);
4841                 if (rc) {
4842                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4843                         qdio_free(CARD_DDEV(card));
4844                 }
4845         }
4846
4847         switch (card->options.cq) {
4848         case QETH_CQ_ENABLED:
4849                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4850                 break;
4851         case QETH_CQ_DISABLED:
4852                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4853                 break;
4854         default:
4855                 break;
4856         }
4857 out:
4858         kfree(out_sbal_ptrs);
4859 out_free_queue_start_poll:
4860         kfree(queue_start_poll);
4861 out_free_in_sbals:
4862         kfree(in_sbal_ptrs);
4863 out_free_qib_param:
4864         kfree(qib_param_field);
4865 out_free_nothing:
4866         return rc;
4867 }
4868
4869 static void qeth_core_free_card(struct qeth_card *card)
4870 {
4871         QETH_CARD_TEXT(card, 2, "freecrd");
4872         qeth_put_cmd(card->read_cmd);
4873         destroy_workqueue(card->event_wq);
4874         unregister_service_level(&card->qeth_service_level);
4875         dev_set_drvdata(&card->gdev->dev, NULL);
4876         kfree(card);
4877 }
4878
4879 void qeth_trace_features(struct qeth_card *card)
4880 {
4881         QETH_CARD_TEXT(card, 2, "features");
4882         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4883         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4884         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4885         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4886                       sizeof(card->info.diagass_support));
4887 }
4888 EXPORT_SYMBOL_GPL(qeth_trace_features);
4889
4890 static struct ccw_device_id qeth_ids[] = {
4891         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4892                                         .driver_info = QETH_CARD_TYPE_OSD},
4893         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4894                                         .driver_info = QETH_CARD_TYPE_IQD},
4895         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4896                                         .driver_info = QETH_CARD_TYPE_OSN},
4897         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4898                                         .driver_info = QETH_CARD_TYPE_OSM},
4899         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4900                                         .driver_info = QETH_CARD_TYPE_OSX},
4901         {},
4902 };
4903 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4904
4905 static struct ccw_driver qeth_ccw_driver = {
4906         .driver = {
4907                 .owner = THIS_MODULE,
4908                 .name = "qeth",
4909         },
4910         .ids = qeth_ids,
4911         .probe = ccwgroup_probe_ccwdev,
4912         .remove = ccwgroup_remove_ccwdev,
4913 };
4914
4915 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4916 {
4917         int retries = 3;
4918         int rc;
4919
4920         QETH_CARD_TEXT(card, 2, "hrdsetup");
4921         atomic_set(&card->force_alloc_skb, 0);
4922         rc = qeth_update_from_chp_desc(card);
4923         if (rc)
4924                 return rc;
4925 retry:
4926         if (retries < 3)
4927                 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4928                                  CARD_DEVID(card));
4929         rc = qeth_qdio_clear_card(card, !IS_IQD(card));
4930         qeth_stop_channel(&card->data);
4931         qeth_stop_channel(&card->write);
4932         qeth_stop_channel(&card->read);
4933         qdio_free(CARD_DDEV(card));
4934
4935         rc = qeth_start_channel(&card->read);
4936         if (rc)
4937                 goto retriable;
4938         rc = qeth_start_channel(&card->write);
4939         if (rc)
4940                 goto retriable;
4941         rc = qeth_start_channel(&card->data);
4942         if (rc)
4943                 goto retriable;
4944 retriable:
4945         if (rc == -ERESTARTSYS) {
4946                 QETH_CARD_TEXT(card, 2, "break1");
4947                 return rc;
4948         } else if (rc) {
4949                 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4950                 if (--retries < 0)
4951                         goto out;
4952                 else
4953                         goto retry;
4954         }
4955         qeth_determine_capabilities(card);
4956         qeth_init_tokens(card);
4957         qeth_init_func_level(card);
4958
4959         rc = qeth_idx_activate_read_channel(card);
4960         if (rc == -EINTR) {
4961                 QETH_CARD_TEXT(card, 2, "break2");
4962                 return rc;
4963         } else if (rc) {
4964                 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4965                 if (--retries < 0)
4966                         goto out;
4967                 else
4968                         goto retry;
4969         }
4970
4971         rc = qeth_idx_activate_write_channel(card);
4972         if (rc == -EINTR) {
4973                 QETH_CARD_TEXT(card, 2, "break3");
4974                 return rc;
4975         } else if (rc) {
4976                 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4977                 if (--retries < 0)
4978                         goto out;
4979                 else
4980                         goto retry;
4981         }
4982         card->read_or_write_problem = 0;
4983         rc = qeth_mpc_initialize(card);
4984         if (rc) {
4985                 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4986                 goto out;
4987         }
4988
4989         rc = qeth_send_startlan(card);
4990         if (rc) {
4991                 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4992                 if (rc == -ENETDOWN) {
4993                         dev_warn(&card->gdev->dev, "The LAN is offline\n");
4994                         *carrier_ok = false;
4995                 } else {
4996                         goto out;
4997                 }
4998         } else {
4999                 *carrier_ok = true;
5000         }
5001
5002         card->options.ipa4.supported = 0;
5003         card->options.ipa6.supported = 0;
5004         card->options.adp.supported = 0;
5005         card->options.sbp.supported_funcs = 0;
5006         card->info.diagass_support = 0;
5007         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5008         if (rc == -ENOMEM)
5009                 goto out;
5010         if (qeth_is_supported(card, IPA_IPV6)) {
5011                 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5012                 if (rc == -ENOMEM)
5013                         goto out;
5014         }
5015         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5016                 rc = qeth_query_setadapterparms(card);
5017                 if (rc < 0) {
5018                         QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5019                         goto out;
5020                 }
5021         }
5022         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5023                 rc = qeth_query_setdiagass(card);
5024                 if (rc)
5025                         QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5026         }
5027
5028         if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5029             (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5030                 card->info.hwtrap = 0;
5031
5032         rc = qeth_set_access_ctrl_online(card, 0);
5033         if (rc)
5034                 goto out;
5035
5036         rc = qeth_init_qdio_queues(card);
5037         if (rc) {
5038                 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5039                 goto out;
5040         }
5041
5042         return 0;
5043 out:
5044         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5045                 "an error on the device\n");
5046         QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5047                          CARD_DEVID(card), rc);
5048         return rc;
5049 }
5050 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5051
5052 static int qeth_set_online(struct qeth_card *card)
5053 {
5054         int rc;
5055
5056         mutex_lock(&card->discipline_mutex);
5057         mutex_lock(&card->conf_mutex);
5058         QETH_CARD_TEXT(card, 2, "setonlin");
5059
5060         rc = card->discipline->set_online(card);
5061
5062         mutex_unlock(&card->conf_mutex);
5063         mutex_unlock(&card->discipline_mutex);
5064
5065         return rc;
5066 }
5067
5068 int qeth_set_offline(struct qeth_card *card, bool resetting)
5069 {
5070         int rc, rc2, rc3;
5071
5072         mutex_lock(&card->discipline_mutex);
5073         mutex_lock(&card->conf_mutex);
5074         QETH_CARD_TEXT(card, 3, "setoffl");
5075
5076         if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5077                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5078                 card->info.hwtrap = 1;
5079         }
5080
5081         rtnl_lock();
5082         card->info.open_when_online = card->dev->flags & IFF_UP;
5083         dev_close(card->dev);
5084         netif_device_detach(card->dev);
5085         netif_carrier_off(card->dev);
5086         rtnl_unlock();
5087
5088         card->discipline->set_offline(card);
5089
5090         rc  = qeth_stop_channel(&card->data);
5091         rc2 = qeth_stop_channel(&card->write);
5092         rc3 = qeth_stop_channel(&card->read);
5093         if (!rc)
5094                 rc = (rc2) ? rc2 : rc3;
5095         if (rc)
5096                 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5097         qdio_free(CARD_DDEV(card));
5098
5099         /* let user_space know that device is offline */
5100         kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5101
5102         mutex_unlock(&card->conf_mutex);
5103         mutex_unlock(&card->discipline_mutex);
5104         return 0;
5105 }
5106 EXPORT_SYMBOL_GPL(qeth_set_offline);
5107
5108 static int qeth_do_reset(void *data)
5109 {
5110         struct qeth_card *card = data;
5111         int rc;
5112
5113         QETH_CARD_TEXT(card, 2, "recover1");
5114         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5115                 return 0;
5116         QETH_CARD_TEXT(card, 2, "recover2");
5117         dev_warn(&card->gdev->dev,
5118                  "A recovery process has been started for the device\n");
5119
5120         qeth_set_offline(card, true);
5121         rc = qeth_set_online(card);
5122         if (!rc) {
5123                 dev_info(&card->gdev->dev,
5124                          "Device successfully recovered!\n");
5125         } else {
5126                 ccwgroup_set_offline(card->gdev);
5127                 dev_warn(&card->gdev->dev,
5128                          "The qeth device driver failed to recover an error on the device\n");
5129         }
5130         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5131         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5132         return 0;
5133 }
5134
5135 #if IS_ENABLED(CONFIG_QETH_L3)
5136 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5137                                 struct qeth_hdr *hdr)
5138 {
5139         struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5140         struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5141         struct net_device *dev = skb->dev;
5142
5143         if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5144                 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5145                                 "FAKELL", skb->len);
5146                 return;
5147         }
5148
5149         if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5150                 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5151                                                              ETH_P_IP;
5152                 unsigned char tg_addr[ETH_ALEN];
5153
5154                 skb_reset_network_header(skb);
5155                 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5156                 case QETH_CAST_MULTICAST:
5157                         if (prot == ETH_P_IP)
5158                                 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5159                         else
5160                                 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5161                         QETH_CARD_STAT_INC(card, rx_multicast);
5162                         break;
5163                 case QETH_CAST_BROADCAST:
5164                         ether_addr_copy(tg_addr, dev->broadcast);
5165                         QETH_CARD_STAT_INC(card, rx_multicast);
5166                         break;
5167                 default:
5168                         if (card->options.sniffer)
5169                                 skb->pkt_type = PACKET_OTHERHOST;
5170                         ether_addr_copy(tg_addr, dev->dev_addr);
5171                 }
5172
5173                 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5174                         dev_hard_header(skb, dev, prot, tg_addr,
5175                                         &l3_hdr->next_hop.rx.src_mac, skb->len);
5176                 else
5177                         dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5178                                         skb->len);
5179         }
5180
5181         /* copy VLAN tag from hdr into skb */
5182         if (!card->options.sniffer &&
5183             (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5184                                   QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5185                 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5186                                 l3_hdr->vlan_id :
5187                                 l3_hdr->next_hop.rx.vlan_id;
5188
5189                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5190         }
5191 }
5192 #endif
5193
5194 static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5195                              struct qeth_hdr *hdr, bool uses_frags)
5196 {
5197         struct napi_struct *napi = &card->napi;
5198         bool is_cso;
5199
5200         switch (hdr->hdr.l2.id) {
5201         case QETH_HEADER_TYPE_OSN:
5202                 skb_push(skb, sizeof(*hdr));
5203                 skb_copy_to_linear_data(skb, hdr, sizeof(*hdr));
5204                 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5205                 QETH_CARD_STAT_INC(card, rx_packets);
5206
5207                 card->osn_info.data_cb(skb);
5208                 return;
5209 #if IS_ENABLED(CONFIG_QETH_L3)
5210         case QETH_HEADER_TYPE_LAYER3:
5211                 qeth_l3_rebuild_skb(card, skb, hdr);
5212                 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5213                 break;
5214 #endif
5215         case QETH_HEADER_TYPE_LAYER2:
5216                 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5217                 break;
5218         default:
5219                 /* never happens */
5220                 if (uses_frags)
5221                         napi_free_frags(napi);
5222                 else
5223                         dev_kfree_skb_any(skb);
5224                 return;
5225         }
5226
5227         if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5228                 skb->ip_summed = CHECKSUM_UNNECESSARY;
5229                 QETH_CARD_STAT_INC(card, rx_skb_csum);
5230         } else {
5231                 skb->ip_summed = CHECKSUM_NONE;
5232         }
5233
5234         QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5235         QETH_CARD_STAT_INC(card, rx_packets);
5236         if (skb_is_nonlinear(skb)) {
5237                 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5238                 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5239                                    skb_shinfo(skb)->nr_frags);
5240         }
5241
5242         if (uses_frags) {
5243                 napi_gro_frags(napi);
5244         } else {
5245                 skb->protocol = eth_type_trans(skb, skb->dev);
5246                 napi_gro_receive(napi, skb);
5247         }
5248 }
5249
5250 static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5251 {
5252         struct page *page = virt_to_page(data);
5253         unsigned int next_frag;
5254
5255         next_frag = skb_shinfo(skb)->nr_frags;
5256         get_page(page);
5257         skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5258                         data_len);
5259 }
5260
5261 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5262 {
5263         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5264 }
5265
5266 static int qeth_extract_skb(struct qeth_card *card,
5267                             struct qeth_qdio_buffer *qethbuffer,
5268                             struct qdio_buffer_element **__element,
5269                             int *__offset)
5270 {
5271         struct qdio_buffer_element *element = *__element;
5272         struct qdio_buffer *buffer = qethbuffer->buffer;
5273         struct napi_struct *napi = &card->napi;
5274         unsigned int linear_len = 0;
5275         bool uses_frags = false;
5276         int offset = *__offset;
5277         bool use_rx_sg = false;
5278         unsigned int headroom;
5279         struct qeth_hdr *hdr;
5280         struct sk_buff *skb;
5281         int skb_len = 0;
5282
5283 next_packet:
5284         /* qeth_hdr must not cross element boundaries */
5285         while (element->length < offset + sizeof(struct qeth_hdr)) {
5286                 if (qeth_is_last_sbale(element))
5287                         return -ENODATA;
5288                 element++;
5289                 offset = 0;
5290         }
5291
5292         hdr = element->addr + offset;
5293         offset += sizeof(*hdr);
5294         skb = NULL;
5295
5296         switch (hdr->hdr.l2.id) {
5297         case QETH_HEADER_TYPE_LAYER2:
5298                 skb_len = hdr->hdr.l2.pkt_length;
5299                 linear_len = ETH_HLEN;
5300                 headroom = 0;
5301                 break;
5302         case QETH_HEADER_TYPE_LAYER3:
5303                 skb_len = hdr->hdr.l3.length;
5304                 if (!IS_LAYER3(card)) {
5305                         QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5306                         goto walk_packet;
5307                 }
5308
5309                 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5310                         linear_len = ETH_HLEN;
5311                         headroom = 0;
5312                         break;
5313                 }
5314
5315                 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5316                         linear_len = sizeof(struct ipv6hdr);
5317                 else
5318                         linear_len = sizeof(struct iphdr);
5319                 headroom = ETH_HLEN;
5320                 break;
5321         case QETH_HEADER_TYPE_OSN:
5322                 skb_len = hdr->hdr.osn.pdu_length;
5323                 if (!IS_OSN(card)) {
5324                         QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5325                         goto walk_packet;
5326                 }
5327
5328                 linear_len = skb_len;
5329                 headroom = sizeof(struct qeth_hdr);
5330                 break;
5331         default:
5332                 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5333                         QETH_CARD_STAT_INC(card, rx_frame_errors);
5334                 else
5335                         QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5336
5337                 /* Can't determine packet length, drop the whole buffer. */
5338                 return -EPROTONOSUPPORT;
5339         }
5340
5341         if (skb_len < linear_len) {
5342                 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5343                 goto walk_packet;
5344         }
5345
5346         use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5347                     (skb_len > card->options.rx_sg_cb &&
5348                      !atomic_read(&card->force_alloc_skb) &&
5349                      !IS_OSN(card));
5350
5351         if (use_rx_sg) {
5352                 /* QETH_CQ_ENABLED only: */
5353                 if (qethbuffer->rx_skb &&
5354                     skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5355                         skb = qethbuffer->rx_skb;
5356                         qethbuffer->rx_skb = NULL;
5357                         goto use_skb;
5358                 }
5359
5360                 skb = napi_get_frags(napi);
5361                 if (!skb) {
5362                         /* -ENOMEM, no point in falling back further. */
5363                         QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5364                         goto walk_packet;
5365                 }
5366
5367                 if (skb_tailroom(skb) >= linear_len + headroom) {
5368                         uses_frags = true;
5369                         goto use_skb;
5370                 }
5371
5372                 netdev_info_once(card->dev,
5373                                  "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5374                                  linear_len + headroom, skb_tailroom(skb));
5375                 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
5376         }
5377
5378         linear_len = skb_len;
5379         skb = napi_alloc_skb(napi, linear_len + headroom);
5380         if (!skb) {
5381                 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5382                 goto walk_packet;
5383         }
5384
5385 use_skb:
5386         if (headroom)
5387                 skb_reserve(skb, headroom);
5388 walk_packet:
5389         while (skb_len) {
5390                 int data_len = min(skb_len, (int)(element->length - offset));
5391                 char *data = element->addr + offset;
5392
5393                 skb_len -= data_len;
5394                 offset += data_len;
5395
5396                 /* Extract data from current element: */
5397                 if (skb && data_len) {
5398                         if (linear_len) {
5399                                 unsigned int copy_len;
5400
5401                                 copy_len = min_t(unsigned int, linear_len,
5402                                                  data_len);
5403
5404                                 skb_put_data(skb, data, copy_len);
5405                                 linear_len -= copy_len;
5406                                 data_len -= copy_len;
5407                                 data += copy_len;
5408                         }
5409
5410                         if (data_len)
5411                                 qeth_create_skb_frag(skb, data, data_len);
5412                 }
5413
5414                 /* Step forward to next element: */
5415                 if (skb_len) {
5416                         if (qeth_is_last_sbale(element)) {
5417                                 QETH_CARD_TEXT(card, 4, "unexeob");
5418                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5419                                 if (skb) {
5420                                         if (uses_frags)
5421                                                 napi_free_frags(napi);
5422                                         else
5423                                                 dev_kfree_skb_any(skb);
5424                                         QETH_CARD_STAT_INC(card,
5425                                                            rx_length_errors);
5426                                 }
5427                                 return -EMSGSIZE;
5428                         }
5429                         element++;
5430                         offset = 0;
5431                 }
5432         }
5433
5434         /* This packet was skipped, go get another one: */
5435         if (!skb)
5436                 goto next_packet;
5437
5438         *__element = element;
5439         *__offset = offset;
5440
5441         qeth_receive_skb(card, skb, hdr, uses_frags);
5442         return 0;
5443 }
5444
5445 static int qeth_extract_skbs(struct qeth_card *card, int budget,
5446                              struct qeth_qdio_buffer *buf, bool *done)
5447 {
5448         int work_done = 0;
5449
5450         *done = false;
5451
5452         while (budget) {
5453                 if (qeth_extract_skb(card, buf, &card->rx.b_element,
5454                                      &card->rx.e_offset)) {
5455                         *done = true;
5456                         break;
5457                 }
5458
5459                 work_done++;
5460                 budget--;
5461         }
5462
5463         return work_done;
5464 }
5465
5466 int qeth_poll(struct napi_struct *napi, int budget)
5467 {
5468         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5469         int work_done = 0;
5470         struct qeth_qdio_buffer *buffer;
5471         int new_budget = budget;
5472         bool done;
5473
5474         while (1) {
5475                 if (!card->rx.b_count) {
5476                         card->rx.qdio_err = 0;
5477                         card->rx.b_count = qdio_get_next_buffers(
5478                                 card->data.ccwdev, 0, &card->rx.b_index,
5479                                 &card->rx.qdio_err);
5480                         if (card->rx.b_count <= 0) {
5481                                 card->rx.b_count = 0;
5482                                 break;
5483                         }
5484                         card->rx.b_element =
5485                                 &card->qdio.in_q->bufs[card->rx.b_index]
5486                                 .buffer->element[0];
5487                         card->rx.e_offset = 0;
5488                 }
5489
5490                 while (card->rx.b_count) {
5491                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5492                         if (!(card->rx.qdio_err &&
5493                             qeth_check_qdio_errors(card, buffer->buffer,
5494                             card->rx.qdio_err, "qinerr")))
5495                                 work_done += qeth_extract_skbs(card, new_budget,
5496                                                                buffer, &done);
5497                         else
5498                                 done = true;
5499
5500                         if (done) {
5501                                 QETH_CARD_STAT_INC(card, rx_bufs);
5502                                 qeth_put_buffer_pool_entry(card,
5503                                         buffer->pool_entry);
5504                                 qeth_queue_input_buffer(card, card->rx.b_index);
5505                                 card->rx.b_count--;
5506                                 if (card->rx.b_count) {
5507                                         card->rx.b_index =
5508                                                 QDIO_BUFNR(card->rx.b_index + 1);
5509                                         card->rx.b_element =
5510                                                 &card->qdio.in_q
5511                                                 ->bufs[card->rx.b_index]
5512                                                 .buffer->element[0];
5513                                         card->rx.e_offset = 0;
5514                                 }
5515                         }
5516
5517                         if (work_done >= budget)
5518                                 goto out;
5519                         else
5520                                 new_budget = budget - work_done;
5521                 }
5522         }
5523
5524         if (napi_complete_done(napi, work_done) &&
5525             qdio_start_irq(CARD_DDEV(card), 0))
5526                 napi_schedule(napi);
5527 out:
5528         return work_done;
5529 }
5530 EXPORT_SYMBOL_GPL(qeth_poll);
5531
5532 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
5533                                  unsigned int bidx, bool error, int budget)
5534 {
5535         struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5536         u8 sflags = buffer->buffer->element[15].sflags;
5537         struct qeth_card *card = queue->card;
5538
5539         if (queue->bufstates && (queue->bufstates[bidx].flags &
5540                                  QDIO_OUTBUF_STATE_FLAG_PENDING)) {
5541                 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
5542
5543                 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
5544                                                    QETH_QDIO_BUF_PENDING) ==
5545                     QETH_QDIO_BUF_PRIMED)
5546                         qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5547
5548                 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5549
5550                 /* prepare the queue slot for re-use: */
5551                 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5552                 if (qeth_init_qdio_out_buf(queue, bidx)) {
5553                         QETH_CARD_TEXT(card, 2, "outofbuf");
5554                         qeth_schedule_recovery(card);
5555                 }
5556
5557                 return;
5558         }
5559
5560         if (card->options.cq == QETH_CQ_ENABLED)
5561                 qeth_notify_skbs(queue, buffer,
5562                                  qeth_compute_cq_notification(sflags, 0));
5563         qeth_clear_output_buffer(queue, buffer, error, budget);
5564 }
5565
5566 static int qeth_tx_poll(struct napi_struct *napi, int budget)
5567 {
5568         struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5569         unsigned int queue_no = queue->queue_no;
5570         struct qeth_card *card = queue->card;
5571         struct net_device *dev = card->dev;
5572         unsigned int work_done = 0;
5573         struct netdev_queue *txq;
5574
5575         txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5576
5577         while (1) {
5578                 unsigned int start, error, i;
5579                 unsigned int packets = 0;
5580                 unsigned int bytes = 0;
5581                 int completed;
5582
5583                 if (qeth_out_queue_is_empty(queue)) {
5584                         napi_complete(napi);
5585                         return 0;
5586                 }
5587
5588                 /* Give the CPU a breather: */
5589                 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5590                         QETH_TXQ_STAT_INC(queue, completion_yield);
5591                         if (napi_complete_done(napi, 0))
5592                                 napi_schedule(napi);
5593                         return 0;
5594                 }
5595
5596                 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
5597                                                &start, &error);
5598                 if (completed <= 0) {
5599                         /* Ensure we see TX completion for pending work: */
5600                         if (napi_complete_done(napi, 0))
5601                                 qeth_tx_arm_timer(queue);
5602                         return 0;
5603                 }
5604
5605                 for (i = start; i < start + completed; i++) {
5606                         struct qeth_qdio_out_buffer *buffer;
5607                         unsigned int bidx = QDIO_BUFNR(i);
5608
5609                         buffer = queue->bufs[bidx];
5610                         packets += skb_queue_len(&buffer->skb_list);
5611                         bytes += buffer->bytes;
5612
5613                         qeth_handle_send_error(card, buffer, error);
5614                         qeth_iqd_tx_complete(queue, bidx, error, budget);
5615                         qeth_cleanup_handled_pending(queue, bidx, false);
5616                 }
5617
5618                 netdev_tx_completed_queue(txq, packets, bytes);
5619                 atomic_sub(completed, &queue->used_buffers);
5620                 work_done += completed;
5621
5622                 /* xmit may have observed the full-condition, but not yet
5623                  * stopped the txq. In which case the code below won't trigger.
5624                  * So before returning, xmit will re-check the txq's fill level
5625                  * and wake it up if needed.
5626                  */
5627                 if (netif_tx_queue_stopped(txq) &&
5628                     !qeth_out_queue_is_full(queue))
5629                         netif_tx_wake_queue(txq);
5630         }
5631 }
5632
5633 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5634 {
5635         if (!cmd->hdr.return_code)
5636                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5637         return cmd->hdr.return_code;
5638 }
5639
5640 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5641                                         struct qeth_reply *reply,
5642                                         unsigned long data)
5643 {
5644         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5645         struct qeth_ipa_caps *caps = reply->param;
5646
5647         if (qeth_setassparms_inspect_rc(cmd))
5648                 return -EIO;
5649
5650         caps->supported = cmd->data.setassparms.data.caps.supported;
5651         caps->enabled = cmd->data.setassparms.data.caps.enabled;
5652         return 0;
5653 }
5654
5655 int qeth_setassparms_cb(struct qeth_card *card,
5656                         struct qeth_reply *reply, unsigned long data)
5657 {
5658         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5659
5660         QETH_CARD_TEXT(card, 4, "defadpcb");
5661
5662         if (cmd->hdr.return_code)
5663                 return -EIO;
5664
5665         cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5666         if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5667                 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
5668         if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5669                 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
5670         return 0;
5671 }
5672 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5673
5674 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5675                                                  enum qeth_ipa_funcs ipa_func,
5676                                                  u16 cmd_code,
5677                                                  unsigned int data_length,
5678                                                  enum qeth_prot_versions prot)
5679 {
5680         struct qeth_ipacmd_setassparms *setassparms;
5681         struct qeth_ipacmd_setassparms_hdr *hdr;
5682         struct qeth_cmd_buffer *iob;
5683
5684         QETH_CARD_TEXT(card, 4, "getasscm");
5685         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5686                                  data_length +
5687                                  offsetof(struct qeth_ipacmd_setassparms,
5688                                           data));
5689         if (!iob)
5690                 return NULL;
5691
5692         setassparms = &__ipa_cmd(iob)->data.setassparms;
5693         setassparms->assist_no = ipa_func;
5694
5695         hdr = &setassparms->hdr;
5696         hdr->length = sizeof(*hdr) + data_length;
5697         hdr->command_code = cmd_code;
5698         return iob;
5699 }
5700 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5701
5702 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5703                                       enum qeth_ipa_funcs ipa_func,
5704                                       u16 cmd_code, u32 *data,
5705                                       enum qeth_prot_versions prot)
5706 {
5707         unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
5708         struct qeth_cmd_buffer *iob;
5709
5710         QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5711         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5712         if (!iob)
5713                 return -ENOMEM;
5714
5715         if (data)
5716                 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
5717         return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
5718 }
5719 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5720
5721 static void qeth_unregister_dbf_views(void)
5722 {
5723         int x;
5724         for (x = 0; x < QETH_DBF_INFOS; x++) {
5725                 debug_unregister(qeth_dbf[x].id);
5726                 qeth_dbf[x].id = NULL;
5727         }
5728 }
5729
5730 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5731 {
5732         char dbf_txt_buf[32];
5733         va_list args;
5734
5735         if (!debug_level_enabled(id, level))
5736                 return;
5737         va_start(args, fmt);
5738         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5739         va_end(args);
5740         debug_text_event(id, level, dbf_txt_buf);
5741 }
5742 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5743
5744 static int qeth_register_dbf_views(void)
5745 {
5746         int ret;
5747         int x;
5748
5749         for (x = 0; x < QETH_DBF_INFOS; x++) {
5750                 /* register the areas */
5751                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5752                                                 qeth_dbf[x].pages,
5753                                                 qeth_dbf[x].areas,
5754                                                 qeth_dbf[x].len);
5755                 if (qeth_dbf[x].id == NULL) {
5756                         qeth_unregister_dbf_views();
5757                         return -ENOMEM;
5758                 }
5759
5760                 /* register a view */
5761                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5762                 if (ret) {
5763                         qeth_unregister_dbf_views();
5764                         return ret;
5765                 }
5766
5767                 /* set a passing level */
5768                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5769         }
5770
5771         return 0;
5772 }
5773
5774 static DEFINE_MUTEX(qeth_mod_mutex);    /* for synchronized module loading */
5775
5776 int qeth_core_load_discipline(struct qeth_card *card,
5777                 enum qeth_discipline_id discipline)
5778 {
5779         mutex_lock(&qeth_mod_mutex);
5780         switch (discipline) {
5781         case QETH_DISCIPLINE_LAYER3:
5782                 card->discipline = try_then_request_module(
5783                         symbol_get(qeth_l3_discipline), "qeth_l3");
5784                 break;
5785         case QETH_DISCIPLINE_LAYER2:
5786                 card->discipline = try_then_request_module(
5787                         symbol_get(qeth_l2_discipline), "qeth_l2");
5788                 break;
5789         default:
5790                 break;
5791         }
5792         mutex_unlock(&qeth_mod_mutex);
5793
5794         if (!card->discipline) {
5795                 dev_err(&card->gdev->dev, "There is no kernel module to "
5796                         "support discipline %d\n", discipline);
5797                 return -EINVAL;
5798         }
5799
5800         card->options.layer = discipline;
5801         return 0;
5802 }
5803
5804 void qeth_core_free_discipline(struct qeth_card *card)
5805 {
5806         if (IS_LAYER2(card))
5807                 symbol_put(qeth_l2_discipline);
5808         else
5809                 symbol_put(qeth_l3_discipline);
5810         card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
5811         card->discipline = NULL;
5812 }
5813
5814 const struct device_type qeth_generic_devtype = {
5815         .name = "qeth_generic",
5816         .groups = qeth_generic_attr_groups,
5817 };
5818 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5819
5820 static const struct device_type qeth_osn_devtype = {
5821         .name = "qeth_osn",
5822         .groups = qeth_osn_attr_groups,
5823 };
5824
5825 #define DBF_NAME_LEN    20
5826
5827 struct qeth_dbf_entry {
5828         char dbf_name[DBF_NAME_LEN];
5829         debug_info_t *dbf_info;
5830         struct list_head dbf_list;
5831 };
5832
5833 static LIST_HEAD(qeth_dbf_list);
5834 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5835
5836 static debug_info_t *qeth_get_dbf_entry(char *name)
5837 {
5838         struct qeth_dbf_entry *entry;
5839         debug_info_t *rc = NULL;
5840
5841         mutex_lock(&qeth_dbf_list_mutex);
5842         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5843                 if (strcmp(entry->dbf_name, name) == 0) {
5844                         rc = entry->dbf_info;
5845                         break;
5846                 }
5847         }
5848         mutex_unlock(&qeth_dbf_list_mutex);
5849         return rc;
5850 }
5851
5852 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5853 {
5854         struct qeth_dbf_entry *new_entry;
5855
5856         card->debug = debug_register(name, 2, 1, 8);
5857         if (!card->debug) {
5858                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5859                 goto err;
5860         }
5861         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5862                 goto err_dbg;
5863         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5864         if (!new_entry)
5865                 goto err_dbg;
5866         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5867         new_entry->dbf_info = card->debug;
5868         mutex_lock(&qeth_dbf_list_mutex);
5869         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5870         mutex_unlock(&qeth_dbf_list_mutex);
5871
5872         return 0;
5873
5874 err_dbg:
5875         debug_unregister(card->debug);
5876 err:
5877         return -ENOMEM;
5878 }
5879
5880 static void qeth_clear_dbf_list(void)
5881 {
5882         struct qeth_dbf_entry *entry, *tmp;
5883
5884         mutex_lock(&qeth_dbf_list_mutex);
5885         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5886                 list_del(&entry->dbf_list);
5887                 debug_unregister(entry->dbf_info);
5888                 kfree(entry);
5889         }
5890         mutex_unlock(&qeth_dbf_list_mutex);
5891 }
5892
5893 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5894 {
5895         struct net_device *dev;
5896
5897         switch (card->info.type) {
5898         case QETH_CARD_TYPE_IQD:
5899                 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5900                                        ether_setup, QETH_MAX_QUEUES, 1);
5901                 break;
5902         case QETH_CARD_TYPE_OSM:
5903                 dev = alloc_etherdev(0);
5904                 break;
5905         case QETH_CARD_TYPE_OSN:
5906                 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5907                 break;
5908         default:
5909                 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
5910         }
5911
5912         if (!dev)
5913                 return NULL;
5914
5915         dev->ml_priv = card;
5916         dev->watchdog_timeo = QETH_TX_TIMEOUT;
5917         dev->min_mtu = IS_OSN(card) ? 64 : 576;
5918          /* initialized when device first goes online: */
5919         dev->max_mtu = 0;
5920         dev->mtu = 0;
5921         SET_NETDEV_DEV(dev, &card->gdev->dev);
5922         netif_carrier_off(dev);
5923
5924         if (IS_OSN(card)) {
5925                 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5926         } else {
5927                 dev->ethtool_ops = &qeth_ethtool_ops;
5928                 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5929                 dev->hw_features |= NETIF_F_SG;
5930                 dev->vlan_features |= NETIF_F_SG;
5931                 if (IS_IQD(card)) {
5932                         dev->features |= NETIF_F_SG;
5933                         if (netif_set_real_num_tx_queues(dev,
5934                                                          QETH_IQD_MIN_TXQ)) {
5935                                 free_netdev(dev);
5936                                 return NULL;
5937                         }
5938                 }
5939         }
5940
5941         return dev;
5942 }
5943
5944 struct net_device *qeth_clone_netdev(struct net_device *orig)
5945 {
5946         struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5947
5948         if (!clone)
5949                 return NULL;
5950
5951         clone->dev_port = orig->dev_port;
5952         return clone;
5953 }
5954
5955 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5956 {
5957         struct qeth_card *card;
5958         struct device *dev;
5959         int rc;
5960         enum qeth_discipline_id enforced_disc;
5961         char dbf_name[DBF_NAME_LEN];
5962
5963         QETH_DBF_TEXT(SETUP, 2, "probedev");
5964
5965         dev = &gdev->dev;
5966         if (!get_device(dev))
5967                 return -ENODEV;
5968
5969         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5970
5971         card = qeth_alloc_card(gdev);
5972         if (!card) {
5973                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5974                 rc = -ENOMEM;
5975                 goto err_dev;
5976         }
5977
5978         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5979                 dev_name(&gdev->dev));
5980         card->debug = qeth_get_dbf_entry(dbf_name);
5981         if (!card->debug) {
5982                 rc = qeth_add_dbf_entry(card, dbf_name);
5983                 if (rc)
5984                         goto err_card;
5985         }
5986
5987         qeth_setup_card(card);
5988         card->dev = qeth_alloc_netdev(card);
5989         if (!card->dev) {
5990                 rc = -ENOMEM;
5991                 goto err_card;
5992         }
5993
5994         card->qdio.no_out_queues = card->dev->num_tx_queues;
5995         rc = qeth_update_from_chp_desc(card);
5996         if (rc)
5997                 goto err_chp_desc;
5998         qeth_determine_capabilities(card);
5999         qeth_set_blkt_defaults(card);
6000
6001         enforced_disc = qeth_enforce_discipline(card);
6002         switch (enforced_disc) {
6003         case QETH_DISCIPLINE_UNDETERMINED:
6004                 gdev->dev.type = &qeth_generic_devtype;
6005                 break;
6006         default:
6007                 card->info.layer_enforced = true;
6008                 rc = qeth_core_load_discipline(card, enforced_disc);
6009                 if (rc)
6010                         goto err_load;
6011
6012                 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
6013                                                 card->discipline->devtype;
6014                 rc = card->discipline->setup(card->gdev);
6015                 if (rc)
6016                         goto err_disc;
6017                 break;
6018         }
6019
6020         return 0;
6021
6022 err_disc:
6023         qeth_core_free_discipline(card);
6024 err_load:
6025 err_chp_desc:
6026         free_netdev(card->dev);
6027 err_card:
6028         qeth_core_free_card(card);
6029 err_dev:
6030         put_device(dev);
6031         return rc;
6032 }
6033
6034 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6035 {
6036         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6037
6038         QETH_CARD_TEXT(card, 2, "removedv");
6039
6040         if (card->discipline) {
6041                 card->discipline->remove(gdev);
6042                 qeth_core_free_discipline(card);
6043         }
6044
6045         qeth_free_qdio_queues(card);
6046
6047         free_netdev(card->dev);
6048         qeth_core_free_card(card);
6049         put_device(&gdev->dev);
6050 }
6051
6052 static int qeth_core_set_online(struct ccwgroup_device *gdev)
6053 {
6054         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6055         int rc = 0;
6056         enum qeth_discipline_id def_discipline;
6057
6058         if (!card->discipline) {
6059                 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6060                                                 QETH_DISCIPLINE_LAYER2;
6061                 rc = qeth_core_load_discipline(card, def_discipline);
6062                 if (rc)
6063                         goto err;
6064                 rc = card->discipline->setup(card->gdev);
6065                 if (rc) {
6066                         qeth_core_free_discipline(card);
6067                         goto err;
6068                 }
6069         }
6070
6071         rc = qeth_set_online(card);
6072 err:
6073         return rc;
6074 }
6075
6076 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6077 {
6078         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6079
6080         return qeth_set_offline(card, false);
6081 }
6082
6083 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6084 {
6085         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6086         qeth_set_allowed_threads(card, 0, 1);
6087         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6088                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6089         qeth_qdio_clear_card(card, 0);
6090         qeth_drain_output_queues(card);
6091         qdio_free(CARD_DDEV(card));
6092 }
6093
6094 static int qeth_suspend(struct ccwgroup_device *gdev)
6095 {
6096         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6097
6098         qeth_set_allowed_threads(card, 0, 1);
6099         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
6100         if (gdev->state == CCWGROUP_OFFLINE)
6101                 return 0;
6102
6103         qeth_set_offline(card, false);
6104         return 0;
6105 }
6106
6107 static int qeth_resume(struct ccwgroup_device *gdev)
6108 {
6109         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6110         int rc;
6111
6112         rc = qeth_set_online(card);
6113
6114         qeth_set_allowed_threads(card, 0xffffffff, 0);
6115         if (rc)
6116                 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
6117         return rc;
6118 }
6119
6120 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6121                            size_t count)
6122 {
6123         int err;
6124
6125         err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6126                                   buf);
6127
6128         return err ? err : count;
6129 }
6130 static DRIVER_ATTR_WO(group);
6131
6132 static struct attribute *qeth_drv_attrs[] = {
6133         &driver_attr_group.attr,
6134         NULL,
6135 };
6136 static struct attribute_group qeth_drv_attr_group = {
6137         .attrs = qeth_drv_attrs,
6138 };
6139 static const struct attribute_group *qeth_drv_attr_groups[] = {
6140         &qeth_drv_attr_group,
6141         NULL,
6142 };
6143
6144 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6145         .driver = {
6146                 .groups = qeth_drv_attr_groups,
6147                 .owner = THIS_MODULE,
6148                 .name = "qeth",
6149         },
6150         .ccw_driver = &qeth_ccw_driver,
6151         .setup = qeth_core_probe_device,
6152         .remove = qeth_core_remove_device,
6153         .set_online = qeth_core_set_online,
6154         .set_offline = qeth_core_set_offline,
6155         .shutdown = qeth_core_shutdown,
6156         .prepare = NULL,
6157         .complete = NULL,
6158         .freeze = qeth_suspend,
6159         .thaw = qeth_resume,
6160         .restore = qeth_resume,
6161 };
6162
6163 struct qeth_card *qeth_get_card_by_busid(char *bus_id)
6164 {
6165         struct ccwgroup_device *gdev;
6166         struct qeth_card *card;
6167
6168         gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
6169         if (!gdev)
6170                 return NULL;
6171
6172         card = dev_get_drvdata(&gdev->dev);
6173         put_device(&gdev->dev);
6174         return card;
6175 }
6176 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
6177
6178 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6179 {
6180         struct qeth_card *card = dev->ml_priv;
6181         struct mii_ioctl_data *mii_data;
6182         int rc = 0;
6183
6184         if (!card)
6185                 return -ENODEV;
6186
6187         switch (cmd) {
6188         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6189                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
6190                 break;
6191         case SIOC_QETH_GET_CARD_TYPE:
6192                 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6193                     !IS_VM_NIC(card))
6194                         return 1;
6195                 return 0;
6196         case SIOCGMIIPHY:
6197                 mii_data = if_mii(rq);
6198                 mii_data->phy_id = 0;
6199                 break;
6200         case SIOCGMIIREG:
6201                 mii_data = if_mii(rq);
6202                 if (mii_data->phy_id != 0)
6203                         rc = -EINVAL;
6204                 else
6205                         mii_data->val_out = qeth_mdio_read(dev,
6206                                 mii_data->phy_id, mii_data->reg_num);
6207                 break;
6208         case SIOC_QETH_QUERY_OAT:
6209                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
6210                 break;
6211         default:
6212                 if (card->discipline->do_ioctl)
6213                         rc = card->discipline->do_ioctl(dev, rq, cmd);
6214                 else
6215                         rc = -EOPNOTSUPP;
6216         }
6217         if (rc)
6218                 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6219         return rc;
6220 }
6221 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6222
6223 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6224                               unsigned long data)
6225 {
6226         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6227         u32 *features = reply->param;
6228
6229         if (qeth_setassparms_inspect_rc(cmd))
6230                 return -EIO;
6231
6232         *features = cmd->data.setassparms.data.flags_32bit;
6233         return 0;
6234 }
6235
6236 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6237                              enum qeth_prot_versions prot)
6238 {
6239         return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6240                                                  NULL, prot);
6241 }
6242
6243 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6244                             enum qeth_prot_versions prot)
6245 {
6246         u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6247         struct qeth_cmd_buffer *iob;
6248         struct qeth_ipa_caps caps;
6249         u32 features;
6250         int rc;
6251
6252         /* some L3 HW requires combined L3+L4 csum offload: */
6253         if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6254             cstype == IPA_OUTBOUND_CHECKSUM)
6255                 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6256
6257         iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6258                                        prot);
6259         if (!iob)
6260                 return -ENOMEM;
6261
6262         rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6263         if (rc)
6264                 return rc;
6265
6266         if ((required_features & features) != required_features) {
6267                 qeth_set_csum_off(card, cstype, prot);
6268                 return -EOPNOTSUPP;
6269         }
6270
6271         iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6272                                        SETASS_DATA_SIZEOF(flags_32bit),
6273                                        prot);
6274         if (!iob) {
6275                 qeth_set_csum_off(card, cstype, prot);
6276                 return -ENOMEM;
6277         }
6278
6279         if (features & QETH_IPA_CHECKSUM_LP2LP)
6280                 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6281         __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6282         rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6283         if (rc) {
6284                 qeth_set_csum_off(card, cstype, prot);
6285                 return rc;
6286         }
6287
6288         if (!qeth_ipa_caps_supported(&caps, required_features) ||
6289             !qeth_ipa_caps_enabled(&caps, required_features)) {
6290                 qeth_set_csum_off(card, cstype, prot);
6291                 return -EOPNOTSUPP;
6292         }
6293
6294         dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6295                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6296         if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
6297             cstype == IPA_OUTBOUND_CHECKSUM)
6298                 dev_warn(&card->gdev->dev,
6299                          "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6300                          QETH_CARD_IFNAME(card));
6301         return 0;
6302 }
6303
6304 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6305                              enum qeth_prot_versions prot)
6306 {
6307         return on ? qeth_set_csum_on(card, cstype, prot) :
6308                     qeth_set_csum_off(card, cstype, prot);
6309 }
6310
6311 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6312                              unsigned long data)
6313 {
6314         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6315         struct qeth_tso_start_data *tso_data = reply->param;
6316
6317         if (qeth_setassparms_inspect_rc(cmd))
6318                 return -EIO;
6319
6320         tso_data->mss = cmd->data.setassparms.data.tso.mss;
6321         tso_data->supported = cmd->data.setassparms.data.tso.supported;
6322         return 0;
6323 }
6324
6325 static int qeth_set_tso_off(struct qeth_card *card,
6326                             enum qeth_prot_versions prot)
6327 {
6328         return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6329                                                  IPA_CMD_ASS_STOP, NULL, prot);
6330 }
6331
6332 static int qeth_set_tso_on(struct qeth_card *card,
6333                            enum qeth_prot_versions prot)
6334 {
6335         struct qeth_tso_start_data tso_data;
6336         struct qeth_cmd_buffer *iob;
6337         struct qeth_ipa_caps caps;
6338         int rc;
6339
6340         iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6341                                        IPA_CMD_ASS_START, 0, prot);
6342         if (!iob)
6343                 return -ENOMEM;
6344
6345         rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6346         if (rc)
6347                 return rc;
6348
6349         if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6350                 qeth_set_tso_off(card, prot);
6351                 return -EOPNOTSUPP;
6352         }
6353
6354         iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6355                                        IPA_CMD_ASS_ENABLE,
6356                                        SETASS_DATA_SIZEOF(caps), prot);
6357         if (!iob) {
6358                 qeth_set_tso_off(card, prot);
6359                 return -ENOMEM;
6360         }
6361
6362         /* enable TSO capability */
6363         __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6364                 QETH_IPA_LARGE_SEND_TCP;
6365         rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6366         if (rc) {
6367                 qeth_set_tso_off(card, prot);
6368                 return rc;
6369         }
6370
6371         if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6372             !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6373                 qeth_set_tso_off(card, prot);
6374                 return -EOPNOTSUPP;
6375         }
6376
6377         dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6378                  tso_data.mss);
6379         return 0;
6380 }
6381
6382 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6383                             enum qeth_prot_versions prot)
6384 {
6385         return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6386 }
6387
6388 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6389 {
6390         int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6391         int rc_ipv6;
6392
6393         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6394                 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6395                                             QETH_PROT_IPV4);
6396         if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6397                 /* no/one Offload Assist available, so the rc is trivial */
6398                 return rc_ipv4;
6399
6400         rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6401                                     QETH_PROT_IPV6);
6402
6403         if (on)
6404                 /* enable: success if any Assist is active */
6405                 return (rc_ipv6) ? rc_ipv4 : 0;
6406
6407         /* disable: failure if any Assist is still active */
6408         return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6409 }
6410
6411 /**
6412  * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6413  * @dev:        a net_device
6414  */
6415 void qeth_enable_hw_features(struct net_device *dev)
6416 {
6417         struct qeth_card *card = dev->ml_priv;
6418         netdev_features_t features;
6419
6420         features = dev->features;
6421         /* force-off any feature that might need an IPA sequence.
6422          * netdev_update_features() will restart them.
6423          */
6424         dev->features &= ~dev->hw_features;
6425         /* toggle VLAN filter, so that VIDs are re-programmed: */
6426         if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6427                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6428                 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6429         }
6430         netdev_update_features(dev);
6431         if (features != dev->features)
6432                 dev_warn(&card->gdev->dev,
6433                          "Device recovery failed to restore all offload features\n");
6434 }
6435 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6436
6437 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6438 {
6439         struct qeth_card *card = dev->ml_priv;
6440         netdev_features_t changed = dev->features ^ features;
6441         int rc = 0;
6442
6443         QETH_CARD_TEXT(card, 2, "setfeat");
6444         QETH_CARD_HEX(card, 2, &features, sizeof(features));
6445
6446         if ((changed & NETIF_F_IP_CSUM)) {
6447                 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6448                                        IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6449                 if (rc)
6450                         changed ^= NETIF_F_IP_CSUM;
6451         }
6452         if (changed & NETIF_F_IPV6_CSUM) {
6453                 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6454                                        IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6455                 if (rc)
6456                         changed ^= NETIF_F_IPV6_CSUM;
6457         }
6458         if (changed & NETIF_F_RXCSUM) {
6459                 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6460                 if (rc)
6461                         changed ^= NETIF_F_RXCSUM;
6462         }
6463         if (changed & NETIF_F_TSO) {
6464                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6465                                       QETH_PROT_IPV4);
6466                 if (rc)
6467                         changed ^= NETIF_F_TSO;
6468         }
6469         if (changed & NETIF_F_TSO6) {
6470                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6471                                       QETH_PROT_IPV6);
6472                 if (rc)
6473                         changed ^= NETIF_F_TSO6;
6474         }
6475
6476         /* everything changed successfully? */
6477         if ((dev->features ^ features) == changed)
6478                 return 0;
6479         /* something went wrong. save changed features and return error */
6480         dev->features ^= changed;
6481         return -EIO;
6482 }
6483 EXPORT_SYMBOL_GPL(qeth_set_features);
6484
6485 netdev_features_t qeth_fix_features(struct net_device *dev,
6486                                     netdev_features_t features)
6487 {
6488         struct qeth_card *card = dev->ml_priv;
6489
6490         QETH_CARD_TEXT(card, 2, "fixfeat");
6491         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6492                 features &= ~NETIF_F_IP_CSUM;
6493         if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6494                 features &= ~NETIF_F_IPV6_CSUM;
6495         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6496             !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6497                 features &= ~NETIF_F_RXCSUM;
6498         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6499                 features &= ~NETIF_F_TSO;
6500         if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6501                 features &= ~NETIF_F_TSO6;
6502
6503         QETH_CARD_HEX(card, 2, &features, sizeof(features));
6504         return features;
6505 }
6506 EXPORT_SYMBOL_GPL(qeth_fix_features);
6507
6508 netdev_features_t qeth_features_check(struct sk_buff *skb,
6509                                       struct net_device *dev,
6510                                       netdev_features_t features)
6511 {
6512         /* GSO segmentation builds skbs with
6513          *      a (small) linear part for the headers, and
6514          *      page frags for the data.
6515          * Compared to a linear skb, the header-only part consumes an
6516          * additional buffer element. This reduces buffer utilization, and
6517          * hurts throughput. So compress small segments into one element.
6518          */
6519         if (netif_needs_gso(skb, features)) {
6520                 /* match skb_segment(): */
6521                 unsigned int doffset = skb->data - skb_mac_header(skb);
6522                 unsigned int hsize = skb_shinfo(skb)->gso_size;
6523                 unsigned int hroom = skb_headroom(skb);
6524
6525                 /* linearize only if resulting skb allocations are order-0: */
6526                 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6527                         features &= ~NETIF_F_SG;
6528         }
6529
6530         return vlan_features_check(skb, features);
6531 }
6532 EXPORT_SYMBOL_GPL(qeth_features_check);
6533
6534 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6535 {
6536         struct qeth_card *card = dev->ml_priv;
6537         struct qeth_qdio_out_q *queue;
6538         unsigned int i;
6539
6540         QETH_CARD_TEXT(card, 5, "getstat");
6541
6542         stats->rx_packets = card->stats.rx_packets;
6543         stats->rx_bytes = card->stats.rx_bytes;
6544         stats->rx_errors = card->stats.rx_length_errors +
6545                            card->stats.rx_frame_errors +
6546                            card->stats.rx_fifo_errors;
6547         stats->rx_dropped = card->stats.rx_dropped_nomem +
6548                             card->stats.rx_dropped_notsupp +
6549                             card->stats.rx_dropped_runt;
6550         stats->multicast = card->stats.rx_multicast;
6551         stats->rx_length_errors = card->stats.rx_length_errors;
6552         stats->rx_frame_errors = card->stats.rx_frame_errors;
6553         stats->rx_fifo_errors = card->stats.rx_fifo_errors;
6554
6555         for (i = 0; i < card->qdio.no_out_queues; i++) {
6556                 queue = card->qdio.out_qs[i];
6557
6558                 stats->tx_packets += queue->stats.tx_packets;
6559                 stats->tx_bytes += queue->stats.tx_bytes;
6560                 stats->tx_errors += queue->stats.tx_errors;
6561                 stats->tx_dropped += queue->stats.tx_dropped;
6562         }
6563 }
6564 EXPORT_SYMBOL_GPL(qeth_get_stats64);
6565
6566 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6567                           u8 cast_type, struct net_device *sb_dev)
6568 {
6569         if (cast_type != RTN_UNICAST)
6570                 return QETH_IQD_MCAST_TXQ;
6571         return QETH_IQD_MIN_UCAST_TXQ;
6572 }
6573 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6574
6575 int qeth_open(struct net_device *dev)
6576 {
6577         struct qeth_card *card = dev->ml_priv;
6578
6579         QETH_CARD_TEXT(card, 4, "qethopen");
6580
6581         if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6582                 return -EIO;
6583
6584         card->data.state = CH_STATE_UP;
6585         netif_tx_start_all_queues(dev);
6586
6587         napi_enable(&card->napi);
6588         local_bh_disable();
6589         napi_schedule(&card->napi);
6590         if (IS_IQD(card)) {
6591                 struct qeth_qdio_out_q *queue;
6592                 unsigned int i;
6593
6594                 qeth_for_each_output_queue(card, queue, i) {
6595                         netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
6596                                           QETH_NAPI_WEIGHT);
6597                         napi_enable(&queue->napi);
6598                         napi_schedule(&queue->napi);
6599                 }
6600         }
6601         /* kick-start the NAPI softirq: */
6602         local_bh_enable();
6603         return 0;
6604 }
6605 EXPORT_SYMBOL_GPL(qeth_open);
6606
6607 int qeth_stop(struct net_device *dev)
6608 {
6609         struct qeth_card *card = dev->ml_priv;
6610
6611         QETH_CARD_TEXT(card, 4, "qethstop");
6612         if (IS_IQD(card)) {
6613                 struct qeth_qdio_out_q *queue;
6614                 unsigned int i;
6615
6616                 /* Quiesce the NAPI instances: */
6617                 qeth_for_each_output_queue(card, queue, i) {
6618                         napi_disable(&queue->napi);
6619                         del_timer_sync(&queue->timer);
6620                 }
6621
6622                 /* Stop .ndo_start_xmit, might still access queue->napi. */
6623                 netif_tx_disable(dev);
6624
6625                 /* Queues may get re-allocated, so remove the NAPIs here. */
6626                 qeth_for_each_output_queue(card, queue, i)
6627                         netif_napi_del(&queue->napi);
6628         } else {
6629                 netif_tx_disable(dev);
6630         }
6631
6632         napi_disable(&card->napi);
6633         return 0;
6634 }
6635 EXPORT_SYMBOL_GPL(qeth_stop);
6636
6637 static int __init qeth_core_init(void)
6638 {
6639         int rc;
6640
6641         pr_info("loading core functions\n");
6642
6643         rc = qeth_register_dbf_views();
6644         if (rc)
6645                 goto dbf_err;
6646         qeth_core_root_dev = root_device_register("qeth");
6647         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6648         if (rc)
6649                 goto register_err;
6650         qeth_core_header_cache =
6651                 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6652                                   roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6653                                   0, NULL);
6654         if (!qeth_core_header_cache) {
6655                 rc = -ENOMEM;
6656                 goto slab_err;
6657         }
6658         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6659                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6660         if (!qeth_qdio_outbuf_cache) {
6661                 rc = -ENOMEM;
6662                 goto cqslab_err;
6663         }
6664         rc = ccw_driver_register(&qeth_ccw_driver);
6665         if (rc)
6666                 goto ccw_err;
6667         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6668         if (rc)
6669                 goto ccwgroup_err;
6670
6671         return 0;
6672
6673 ccwgroup_err:
6674         ccw_driver_unregister(&qeth_ccw_driver);
6675 ccw_err:
6676         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6677 cqslab_err:
6678         kmem_cache_destroy(qeth_core_header_cache);
6679 slab_err:
6680         root_device_unregister(qeth_core_root_dev);
6681 register_err:
6682         qeth_unregister_dbf_views();
6683 dbf_err:
6684         pr_err("Initializing the qeth device driver failed\n");
6685         return rc;
6686 }
6687
6688 static void __exit qeth_core_exit(void)
6689 {
6690         qeth_clear_dbf_list();
6691         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6692         ccw_driver_unregister(&qeth_ccw_driver);
6693         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6694         kmem_cache_destroy(qeth_core_header_cache);
6695         root_device_unregister(qeth_core_root_dev);
6696         qeth_unregister_dbf_views();
6697         pr_info("core functions removed\n");
6698 }
6699
6700 module_init(qeth_core_init);
6701 module_exit(qeth_core_exit);
6702 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6703 MODULE_DESCRIPTION("qeth core functions");
6704 MODULE_LICENSE("GPL");