drivers/s390/net/qeth_core_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/ip.h>
  18 #include <linux/tcp.h>
  19 #include <linux/mii.h>
  20 #include <linux/kthread.h>
  21 #include <linux/slab.h>
  22 #include <net/iucv/af_iucv.h>
  23
  24 #include <asm/ebcdic.h>
  25 #include <asm/io.h>
  26 #include <asm/sysinfo.h>
  27 #include <asm/compat.h>
  28
  29 #include "qeth_core.h"
  30
  31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  32         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  33         /*                   N  P  A    M  L  V                      H  */
  34         [QETH_DBF_SETUP] = {"qeth_setup",
  35                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  36         [QETH_DBF_MSG]   = {"qeth_msg",
  37                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  38         [QETH_DBF_CTRL]  = {"qeth_control",
  39                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  40 };
  41 EXPORT_SYMBOL_GPL(qeth_dbf);
  42
  43 struct qeth_card_list_struct qeth_core_card_list;
  44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  45 struct kmem_cache *qeth_core_header_cache;
  46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  47 static struct kmem_cache *qeth_qdio_outbuf_cache;
  48
  49 static struct device *qeth_core_root_dev;
  50 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  51 static struct lock_class_key qdio_out_skb_queue_key;
  52 static struct mutex qeth_mod_mutex;
  53
  54 static void qeth_send_control_data_cb(struct qeth_channel *,
  55                         struct qeth_cmd_buffer *);
  56 static int qeth_issue_next_read(struct qeth_card *);
  57 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  58 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  59 static void qeth_free_buffer_pool(struct qeth_card *);
  60 static int qeth_qdio_establish(struct qeth_card *);
  61 static void qeth_free_qdio_buffers(struct qeth_card *);
  62 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  63                 struct qeth_qdio_out_buffer *buf,
  64                 enum iucv_tx_notify notification);
  65 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  66 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  67                 struct qeth_qdio_out_buffer *buf,
  68                 enum qeth_qdio_buffer_states newbufstate);
  69 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  70
  71 static inline const char *qeth_get_cardname(struct qeth_card *card)
  72 {
  73         if (card->info.guestlan) {
  74                 switch (card->info.type) {
  75                 case QETH_CARD_TYPE_OSD:
  76                         return " Virtual NIC QDIO";
  77                 case QETH_CARD_TYPE_IQD:
  78                         return " Virtual NIC Hiper";
  79                 case QETH_CARD_TYPE_OSM:
  80                         return " Virtual NIC QDIO - OSM";
  81                 case QETH_CARD_TYPE_OSX:
  82                         return " Virtual NIC QDIO - OSX";
  83                 default:
  84                         return " unknown";
  85                 }
  86         } else {
  87                 switch (card->info.type) {
  88                 case QETH_CARD_TYPE_OSD:
  89                         return " OSD Express";
  90                 case QETH_CARD_TYPE_IQD:
  91                         return " HiperSockets";
  92                 case QETH_CARD_TYPE_OSN:
  93                         return " OSN QDIO";
  94                 case QETH_CARD_TYPE_OSM:
  95                         return " OSM QDIO";
  96                 case QETH_CARD_TYPE_OSX:
  97                         return " OSX QDIO";
  98                 default:
  99                         return " unknown";
 100                 }
 101         }
 102         return " n/a";
 103 }
 104
 105 /* max length to be returned: 14 */
 106 const char *qeth_get_cardname_short(struct qeth_card *card)
 107 {
 108         if (card->info.guestlan) {
 109                 switch (card->info.type) {
 110                 case QETH_CARD_TYPE_OSD:
 111                         return "Virt.NIC QDIO";
 112                 case QETH_CARD_TYPE_IQD:
 113                         return "Virt.NIC Hiper";
 114                 case QETH_CARD_TYPE_OSM:
 115                         return "Virt.NIC OSM";
 116                 case QETH_CARD_TYPE_OSX:
 117                         return "Virt.NIC OSX";
 118                 default:
 119                         return "unknown";
 120                 }
 121         } else {
 122                 switch (card->info.type) {
 123                 case QETH_CARD_TYPE_OSD:
 124                         switch (card->info.link_type) {
 125                         case QETH_LINK_TYPE_FAST_ETH:
 126                                 return "OSD_100";
 127                         case QETH_LINK_TYPE_HSTR:
 128                                 return "HSTR";
 129                         case QETH_LINK_TYPE_GBIT_ETH:
 130                                 return "OSD_1000";
 131                         case QETH_LINK_TYPE_10GBIT_ETH:
 132                                 return "OSD_10GIG";
 133                         case QETH_LINK_TYPE_LANE_ETH100:
 134                                 return "OSD_FE_LANE";
 135                         case QETH_LINK_TYPE_LANE_TR:
 136                                 return "OSD_TR_LANE";
 137                         case QETH_LINK_TYPE_LANE_ETH1000:
 138                                 return "OSD_GbE_LANE";
 139                         case QETH_LINK_TYPE_LANE:
 140                                 return "OSD_ATM_LANE";
 141                         default:
 142                                 return "OSD_Express";
 143                         }
 144                 case QETH_CARD_TYPE_IQD:
 145                         return "HiperSockets";
 146                 case QETH_CARD_TYPE_OSN:
 147                         return "OSN";
 148                 case QETH_CARD_TYPE_OSM:
 149                         return "OSM_1000";
 150                 case QETH_CARD_TYPE_OSX:
 151                         return "OSX_10GIG";
 152                 default:
 153                         return "unknown";
 154                 }
 155         }
 156         return "n/a";
 157 }
 158
 159 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 160                          int clear_start_mask)
 161 {
 162         unsigned long flags;
 163
 164         spin_lock_irqsave(&card->thread_mask_lock, flags);
 165         card->thread_allowed_mask = threads;
 166         if (clear_start_mask)
 167                 card->thread_start_mask &= threads;
 168         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 169         wake_up(&card->wait_q);
 170 }
 171 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 172
 173 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 174 {
 175         unsigned long flags;
 176         int rc = 0;
 177
 178         spin_lock_irqsave(&card->thread_mask_lock, flags);
 179         rc = (card->thread_running_mask & threads);
 180         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 181         return rc;
 182 }
 183 EXPORT_SYMBOL_GPL(qeth_threads_running);
 184
 185 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 186 {
 187         return wait_event_interruptible(card->wait_q,
 188                         qeth_threads_running(card, threads) == 0);
 189 }
 190 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 191
 192 void qeth_clear_working_pool_list(struct qeth_card *card)
 193 {
 194         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 195
 196         QETH_CARD_TEXT(card, 5, "clwrklst");
 197         list_for_each_entry_safe(pool_entry, tmp,
 198                             &card->qdio.in_buf_pool.entry_list, list){
 199                         list_del(&pool_entry->list);
 200         }
 201 }
 202 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 203
 204 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 205 {
 206         struct qeth_buffer_pool_entry *pool_entry;
 207         void *ptr;
 208         int i, j;
 209
 210         QETH_CARD_TEXT(card, 5, "alocpool");
 211         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 212                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 213                 if (!pool_entry) {
 214                         qeth_free_buffer_pool(card);
 215                         return -ENOMEM;
 216                 }
 217                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 218                         ptr = (void *) __get_free_page(GFP_KERNEL);
 219                         if (!ptr) {
 220                                 while (j > 0)
 221                                         free_page((unsigned long)
 222                                                   pool_entry->elements[--j]);
 223                                 kfree(pool_entry);
 224                                 qeth_free_buffer_pool(card);
 225                                 return -ENOMEM;
 226                         }
 227                         pool_entry->elements[j] = ptr;
 228                 }
 229                 list_add(&pool_entry->init_list,
 230                          &card->qdio.init_pool.entry_list);
 231         }
 232         return 0;
 233 }
 234
 235 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 236 {
 237         QETH_CARD_TEXT(card, 2, "realcbp");
 238
 239         if ((card->state != CARD_STATE_DOWN) &&
 240             (card->state != CARD_STATE_RECOVER))
 241                 return -EPERM;
 242
 243         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 244         qeth_clear_working_pool_list(card);
 245         qeth_free_buffer_pool(card);
 246         card->qdio.in_buf_pool.buf_count = bufcnt;
 247         card->qdio.init_pool.buf_count = bufcnt;
 248         return qeth_alloc_buffer_pool(card);
 249 }
 250 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 251
 252 static inline int qeth_cq_init(struct qeth_card *card)
 253 {
 254         int rc;
 255
 256         if (card->options.cq == QETH_CQ_ENABLED) {
 257                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 258                 memset(card->qdio.c_q->qdio_bufs, 0,
 259                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
 260                 card->qdio.c_q->next_buf_to_init = 127;
 261                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 262                              card->qdio.no_in_queues - 1, 0,
 263                              127);
 264                 if (rc) {
 265                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 266                         goto out;
 267                 }
 268         }
 269         rc = 0;
 270 out:
 271         return rc;
 272 }
 273
 274 static inline int qeth_alloc_cq(struct qeth_card *card)
 275 {
 276         int rc;
 277
 278         if (card->options.cq == QETH_CQ_ENABLED) {
 279                 int i;
 280                 struct qdio_outbuf_state *outbuf_states;
 281
 282                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 283                 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
 284                                          GFP_KERNEL);
 285                 if (!card->qdio.c_q) {
 286                         rc = -1;
 287                         goto kmsg_out;
 288                 }
 289                 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
 290
 291                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
 292                         card->qdio.c_q->bufs[i].buffer =
 293                                 &card->qdio.c_q->qdio_bufs[i];
 294                 }
 295
 296                 card->qdio.no_in_queues = 2;
 297
 298                 card->qdio.out_bufstates = (struct qdio_outbuf_state *)
 299                         kzalloc(card->qdio.no_out_queues *
 300                                 QDIO_MAX_BUFFERS_PER_Q *
 301                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 302                 outbuf_states = card->qdio.out_bufstates;
 303                 if (outbuf_states == NULL) {
 304                         rc = -1;
 305                         goto free_cq_out;
 306                 }
 307                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 308                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 309                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 310                 }
 311         } else {
 312                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 313                 card->qdio.c_q = NULL;
 314                 card->qdio.no_in_queues = 1;
 315         }
 316         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 317         rc = 0;
 318 out:
 319         return rc;
 320 free_cq_out:
 321         kfree(card->qdio.c_q);
 322         card->qdio.c_q = NULL;
 323 kmsg_out:
 324         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 325         goto out;
 326 }
 327
 328 static inline void qeth_free_cq(struct qeth_card *card)
 329 {
 330         if (card->qdio.c_q) {
 331                 --card->qdio.no_in_queues;
 332                 kfree(card->qdio.c_q);
 333                 card->qdio.c_q = NULL;
 334         }
 335         kfree(card->qdio.out_bufstates);
 336         card->qdio.out_bufstates = NULL;
 337 }
 338
 339 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 340         int delayed) {
 341         enum iucv_tx_notify n;
 342
 343         switch (sbalf15) {
 344         case 0:
 345                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 346                 break;
 347         case 4:
 348         case 16:
 349         case 17:
 350         case 18:
 351                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 352                         TX_NOTIFY_UNREACHABLE;
 353                 break;
 354         default:
 355                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 356                         TX_NOTIFY_GENERALERROR;
 357                 break;
 358         }
 359
 360         return n;
 361 }
 362
 363 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
 364         int bidx, int forced_cleanup)
 365 {
 366         if (q->card->options.cq != QETH_CQ_ENABLED)
 367                 return;
 368
 369         if (q->bufs[bidx]->next_pending != NULL) {
 370                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 371                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 372
 373                 while (c) {
 374                         if (forced_cleanup ||
 375                             atomic_read(&c->state) ==
 376                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 377                                 struct qeth_qdio_out_buffer *f = c;
 378                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 379                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 380                                 /* release here to avoid interleaving between
 381                                    outbound tasklet and inbound tasklet
 382                                    regarding notifications and lifecycle */
 383                                 qeth_release_skbs(c);
 384
 385                                 c = f->next_pending;
 386                                 WARN_ON_ONCE(head->next_pending != f);
 387                                 head->next_pending = c;
 388                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 389                         } else {
 390                                 head = c;
 391                                 c = c->next_pending;
 392                         }
 393
 394                 }
 395         }
 396         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 397                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 398                 /* for recovery situations */
 399                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 400                 qeth_init_qdio_out_buf(q, bidx);
 401                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 402         }
 403 }
 404
 405
 406 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
 407                 unsigned long phys_aob_addr) {
 408         struct qaob *aob;
 409         struct qeth_qdio_out_buffer *buffer;
 410         enum iucv_tx_notify notification;
 411
 412         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 413         QETH_CARD_TEXT(card, 5, "haob");
 414         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 415         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 416         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 417
 418         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 419                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 420                 notification = TX_NOTIFY_OK;
 421         } else {
 422                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 423                                                         QETH_QDIO_BUF_PENDING);
 424                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 425                 notification = TX_NOTIFY_DELAYED_OK;
 426         }
 427
 428         if (aob->aorc != 0)  {
 429                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 430                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 431         }
 432         qeth_notify_skbs(buffer->q, buffer, notification);
 433
 434         buffer->aob = NULL;
 435         qeth_clear_output_buffer(buffer->q, buffer,
 436                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 437
 438         /* from here on: do not touch buffer anymore */
 439         qdio_release_aob(aob);
 440 }
 441
 442 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 443 {
 444         return card->options.cq == QETH_CQ_ENABLED &&
 445             card->qdio.c_q != NULL &&
 446             queue != 0 &&
 447             queue == card->qdio.no_in_queues - 1;
 448 }
 449
 450
 451 static int qeth_issue_next_read(struct qeth_card *card)
 452 {
 453         int rc;
 454         struct qeth_cmd_buffer *iob;
 455
 456         QETH_CARD_TEXT(card, 5, "issnxrd");
 457         if (card->read.state != CH_STATE_UP)
 458                 return -EIO;
 459         iob = qeth_get_buffer(&card->read);
 460         if (!iob) {
 461                 dev_warn(&card->gdev->dev, "The qeth device driver "
 462                         "failed to recover an error on the device\n");
 463                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 464                         "available\n", dev_name(&card->gdev->dev));
 465                 return -ENOMEM;
 466         }
 467         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 468         QETH_CARD_TEXT(card, 6, "noirqpnd");
 469         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 470                               (addr_t) iob, 0, 0);
 471         if (rc) {
 472                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 473                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 474                 atomic_set(&card->read.irq_pending, 0);
 475                 card->read_or_write_problem = 1;
 476                 qeth_schedule_recovery(card);
 477                 wake_up(&card->wait_q);
 478         }
 479         return rc;
 480 }
 481
 482 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 483 {
 484         struct qeth_reply *reply;
 485
 486         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 487         if (reply) {
 488                 atomic_set(&reply->refcnt, 1);
 489                 atomic_set(&reply->received, 0);
 490                 reply->card = card;
 491         }
 492         return reply;
 493 }
 494
 495 static void qeth_get_reply(struct qeth_reply *reply)
 496 {
 497         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 498         atomic_inc(&reply->refcnt);
 499 }
 500
 501 static void qeth_put_reply(struct qeth_reply *reply)
 502 {
 503         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 504         if (atomic_dec_and_test(&reply->refcnt))
 505                 kfree(reply);
 506 }
 507
 508 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 509                 struct qeth_card *card)
 510 {
 511         char *ipa_name;
 512         int com = cmd->hdr.command;
 513         ipa_name = qeth_get_ipa_cmd_name(com);
 514         if (rc)
 515                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 516                                 "x%X \"%s\"\n",
 517                                 ipa_name, com, dev_name(&card->gdev->dev),
 518                                 QETH_CARD_IFNAME(card), rc,
 519                                 qeth_get_ipa_msg(rc));
 520         else
 521                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 522                                 ipa_name, com, dev_name(&card->gdev->dev),
 523                                 QETH_CARD_IFNAME(card));
 524 }
 525
 526 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 527                 struct qeth_cmd_buffer *iob)
 528 {
 529         struct qeth_ipa_cmd *cmd = NULL;
 530
 531         QETH_CARD_TEXT(card, 5, "chkipad");
 532         if (IS_IPA(iob->data)) {
 533                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 534                 if (IS_IPA_REPLY(cmd)) {
 535                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 536                             cmd->hdr.command != IPA_CMD_DELCCID &&
 537                             cmd->hdr.command != IPA_CMD_MODCCID &&
 538                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 539                                 qeth_issue_ipa_msg(cmd,
 540                                                 cmd->hdr.return_code, card);
 541                         return cmd;
 542                 } else {
 543                         switch (cmd->hdr.command) {
 544                         case IPA_CMD_STOPLAN:
 545                                 dev_warn(&card->gdev->dev,
 546                                            "The link for interface %s on CHPID"
 547                                            " 0x%X failed\n",
 548                                            QETH_CARD_IFNAME(card),
 549                                            card->info.chpid);
 550                                 card->lan_online = 0;
 551                                 if (card->dev && netif_carrier_ok(card->dev))
 552                                         netif_carrier_off(card->dev);
 553                                 return NULL;
 554                         case IPA_CMD_STARTLAN:
 555                                 dev_info(&card->gdev->dev,
 556                                            "The link for %s on CHPID 0x%X has"
 557                                            " been restored\n",
 558                                            QETH_CARD_IFNAME(card),
 559                                            card->info.chpid);
 560                                 netif_carrier_on(card->dev);
 561                                 card->lan_online = 1;
 562                                 if (card->info.hwtrap)
 563                                         card->info.hwtrap = 2;
 564                                 qeth_schedule_recovery(card);
 565                                 return NULL;
 566                         case IPA_CMD_MODCCID:
 567                                 return cmd;
 568                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 569                                 QETH_CARD_TEXT(card, 3, "irla");
 570                                 break;
 571                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 572                                 QETH_CARD_TEXT(card, 3, "urla");
 573                                 break;
 574                         default:
 575                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 576                                            "but not a reply!\n");
 577                                 break;
 578                         }
 579                 }
 580         }
 581         return cmd;
 582 }
 583
 584 void qeth_clear_ipacmd_list(struct qeth_card *card)
 585 {
 586         struct qeth_reply *reply, *r;
 587         unsigned long flags;
 588
 589         QETH_CARD_TEXT(card, 4, "clipalst");
 590
 591         spin_lock_irqsave(&card->lock, flags);
 592         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 593                 qeth_get_reply(reply);
 594                 reply->rc = -EIO;
 595                 atomic_inc(&reply->received);
 596                 list_del_init(&reply->list);
 597                 wake_up(&reply->wait_q);
 598                 qeth_put_reply(reply);
 599         }
 600         spin_unlock_irqrestore(&card->lock, flags);
 601         atomic_set(&card->write.irq_pending, 0);
 602 }
 603 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 604
 605 static int qeth_check_idx_response(struct qeth_card *card,
 606         unsigned char *buffer)
 607 {
 608         if (!buffer)
 609                 return 0;
 610
 611         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 612         if ((buffer[2] & 0xc0) == 0xc0) {
 613                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 614                            "with cause code 0x%02x%s\n",
 615                            buffer[4],
 616                            ((buffer[4] == 0x22) ?
 617                             " -- try another portname" : ""));
 618                 QETH_CARD_TEXT(card, 2, "ckidxres");
 619                 QETH_CARD_TEXT(card, 2, " idxterm");
 620                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 621                 if (buffer[4] == 0xf6) {
 622                         dev_err(&card->gdev->dev,
 623                         "The qeth device is not configured "
 624                         "for the OSI layer required by z/VM\n");
 625                         return -EPERM;
 626                 }
 627                 return -EIO;
 628         }
 629         return 0;
 630 }
 631
 632 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 633                 __u32 len)
 634 {
 635         struct qeth_card *card;
 636
 637         card = CARD_FROM_CDEV(channel->ccwdev);
 638         QETH_CARD_TEXT(card, 4, "setupccw");
 639         if (channel == &card->read)
 640                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 641         else
 642                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 643         channel->ccw.count = len;
 644         channel->ccw.cda = (__u32) __pa(iob);
 645 }
 646
 647 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 648 {
 649         __u8 index;
 650
 651         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 652         index = channel->io_buf_no;
 653         do {
 654                 if (channel->iob[index].state == BUF_STATE_FREE) {
 655                         channel->iob[index].state = BUF_STATE_LOCKED;
 656                         channel->io_buf_no = (channel->io_buf_no + 1) %
 657                                 QETH_CMD_BUFFER_NO;
 658                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 659                         return channel->iob + index;
 660                 }
 661                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 662         } while (index != channel->io_buf_no);
 663
 664         return NULL;
 665 }
 666
 667 void qeth_release_buffer(struct qeth_channel *channel,
 668                 struct qeth_cmd_buffer *iob)
 669 {
 670         unsigned long flags;
 671
 672         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 673         spin_lock_irqsave(&channel->iob_lock, flags);
 674         memset(iob->data, 0, QETH_BUFSIZE);
 675         iob->state = BUF_STATE_FREE;
 676         iob->callback = qeth_send_control_data_cb;
 677         iob->rc = 0;
 678         spin_unlock_irqrestore(&channel->iob_lock, flags);
 679         wake_up(&channel->wait_q);
 680 }
 681 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 682
 683 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 684 {
 685         struct qeth_cmd_buffer *buffer = NULL;
 686         unsigned long flags;
 687
 688         spin_lock_irqsave(&channel->iob_lock, flags);
 689         buffer = __qeth_get_buffer(channel);
 690         spin_unlock_irqrestore(&channel->iob_lock, flags);
 691         return buffer;
 692 }
 693
 694 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 695 {
 696         struct qeth_cmd_buffer *buffer;
 697         wait_event(channel->wait_q,
 698                    ((buffer = qeth_get_buffer(channel)) != NULL));
 699         return buffer;
 700 }
 701 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 702
 703 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 704 {
 705         int cnt;
 706
 707         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 708                 qeth_release_buffer(channel, &channel->iob[cnt]);
 709         channel->buf_no = 0;
 710         channel->io_buf_no = 0;
 711 }
 712 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 713
 714 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 715                   struct qeth_cmd_buffer *iob)
 716 {
 717         struct qeth_card *card;
 718         struct qeth_reply *reply, *r;
 719         struct qeth_ipa_cmd *cmd;
 720         unsigned long flags;
 721         int keep_reply;
 722         int rc = 0;
 723
 724         card = CARD_FROM_CDEV(channel->ccwdev);
 725         QETH_CARD_TEXT(card, 4, "sndctlcb");
 726         rc = qeth_check_idx_response(card, iob->data);
 727         switch (rc) {
 728         case 0:
 729                 break;
 730         case -EIO:
 731                 qeth_clear_ipacmd_list(card);
 732                 qeth_schedule_recovery(card);
 733                 /* fall through */
 734         default:
 735                 goto out;
 736         }
 737
 738         cmd = qeth_check_ipa_data(card, iob);
 739         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 740                 goto out;
 741         /*in case of OSN : check if cmd is set */
 742         if (card->info.type == QETH_CARD_TYPE_OSN &&
 743             cmd &&
 744             cmd->hdr.command != IPA_CMD_STARTLAN &&
 745             card->osn_info.assist_cb != NULL) {
 746                 card->osn_info.assist_cb(card->dev, cmd);
 747                 goto out;
 748         }
 749
 750         spin_lock_irqsave(&card->lock, flags);
 751         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 752                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 753                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 754                         qeth_get_reply(reply);
 755                         list_del_init(&reply->list);
 756                         spin_unlock_irqrestore(&card->lock, flags);
 757                         keep_reply = 0;
 758                         if (reply->callback != NULL) {
 759                                 if (cmd) {
 760                                         reply->offset = (__u16)((char *)cmd -
 761                                                         (char *)iob->data);
 762                                         keep_reply = reply->callback(card,
 763                                                         reply,
 764                                                         (unsigned long)cmd);
 765                                 } else
 766                                         keep_reply = reply->callback(card,
 767                                                         reply,
 768                                                         (unsigned long)iob);
 769                         }
 770                         if (cmd)
 771                                 reply->rc = (u16) cmd->hdr.return_code;
 772                         else if (iob->rc)
 773                                 reply->rc = iob->rc;
 774                         if (keep_reply) {
 775                                 spin_lock_irqsave(&card->lock, flags);
 776                                 list_add_tail(&reply->list,
 777                                               &card->cmd_waiter_list);
 778                                 spin_unlock_irqrestore(&card->lock, flags);
 779                         } else {
 780                                 atomic_inc(&reply->received);
 781                                 wake_up(&reply->wait_q);
 782                         }
 783                         qeth_put_reply(reply);
 784                         goto out;
 785                 }
 786         }
 787         spin_unlock_irqrestore(&card->lock, flags);
 788 out:
 789         memcpy(&card->seqno.pdu_hdr_ack,
 790                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 791                 QETH_SEQ_NO_LENGTH);
 792         qeth_release_buffer(channel, iob);
 793 }
 794
 795 static int qeth_setup_channel(struct qeth_channel *channel)
 796 {
 797         int cnt;
 798
 799         QETH_DBF_TEXT(SETUP, 2, "setupch");
 800         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 801                 channel->iob[cnt].data =
 802                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 803                 if (channel->iob[cnt].data == NULL)
 804                         break;
 805                 channel->iob[cnt].state = BUF_STATE_FREE;
 806                 channel->iob[cnt].channel = channel;
 807                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 808                 channel->iob[cnt].rc = 0;
 809         }
 810         if (cnt < QETH_CMD_BUFFER_NO) {
 811                 while (cnt-- > 0)
 812                         kfree(channel->iob[cnt].data);
 813                 return -ENOMEM;
 814         }
 815         channel->buf_no = 0;
 816         channel->io_buf_no = 0;
 817         atomic_set(&channel->irq_pending, 0);
 818         spin_lock_init(&channel->iob_lock);
 819
 820         init_waitqueue_head(&channel->wait_q);
 821         return 0;
 822 }
 823
 824 static int qeth_set_thread_start_bit(struct qeth_card *card,
 825                 unsigned long thread)
 826 {
 827         unsigned long flags;
 828
 829         spin_lock_irqsave(&card->thread_mask_lock, flags);
 830         if (!(card->thread_allowed_mask & thread) ||
 831               (card->thread_start_mask & thread)) {
 832                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 833                 return -EPERM;
 834         }
 835         card->thread_start_mask |= thread;
 836         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 837         return 0;
 838 }
 839
 840 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 841 {
 842         unsigned long flags;
 843
 844         spin_lock_irqsave(&card->thread_mask_lock, flags);
 845         card->thread_start_mask &= ~thread;
 846         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 847         wake_up(&card->wait_q);
 848 }
 849 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 850
 851 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 852 {
 853         unsigned long flags;
 854
 855         spin_lock_irqsave(&card->thread_mask_lock, flags);
 856         card->thread_running_mask &= ~thread;
 857         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 858         wake_up(&card->wait_q);
 859 }
 860 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 861
 862 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 863 {
 864         unsigned long flags;
 865         int rc = 0;
 866
 867         spin_lock_irqsave(&card->thread_mask_lock, flags);
 868         if (card->thread_start_mask & thread) {
 869                 if ((card->thread_allowed_mask & thread) &&
 870                     !(card->thread_running_mask & thread)) {
 871                         rc = 1;
 872                         card->thread_start_mask &= ~thread;
 873                         card->thread_running_mask |= thread;
 874                 } else
 875                         rc = -EPERM;
 876         }
 877         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 878         return rc;
 879 }
 880
 881 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 882 {
 883         int rc = 0;
 884
 885         wait_event(card->wait_q,
 886                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 887         return rc;
 888 }
 889 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 890
 891 void qeth_schedule_recovery(struct qeth_card *card)
 892 {
 893         QETH_CARD_TEXT(card, 2, "startrec");
 894         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 895                 schedule_work(&card->kernel_thread_starter);
 896 }
 897 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 898
 899 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 900 {
 901         int dstat, cstat;
 902         char *sense;
 903         struct qeth_card *card;
 904
 905         sense = (char *) irb->ecw;
 906         cstat = irb->scsw.cmd.cstat;
 907         dstat = irb->scsw.cmd.dstat;
 908         card = CARD_FROM_CDEV(cdev);
 909
 910         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 911                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 912                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 913                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 914                 dev_warn(&cdev->dev, "The qeth device driver "
 915                         "failed to recover an error on the device\n");
 916                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 917                         dev_name(&cdev->dev), dstat, cstat);
 918                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 919                                 16, 1, irb, 64, 1);
 920                 return 1;
 921         }
 922
 923         if (dstat & DEV_STAT_UNIT_CHECK) {
 924                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 925                     SENSE_RESETTING_EVENT_FLAG) {
 926                         QETH_CARD_TEXT(card, 2, "REVIND");
 927                         return 1;
 928                 }
 929                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 930                     SENSE_COMMAND_REJECT_FLAG) {
 931                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 932                         return 1;
 933                 }
 934                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 935                         QETH_CARD_TEXT(card, 2, "AFFE");
 936                         return 1;
 937                 }
 938                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 939                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 940                         return 0;
 941                 }
 942                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 943                         return 1;
 944         }
 945         return 0;
 946 }
 947
 948 static long __qeth_check_irb_error(struct ccw_device *cdev,
 949                 unsigned long intparm, struct irb *irb)
 950 {
 951         struct qeth_card *card;
 952
 953         card = CARD_FROM_CDEV(cdev);
 954
 955         if (!IS_ERR(irb))
 956                 return 0;
 957
 958         switch (PTR_ERR(irb)) {
 959         case -EIO:
 960                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 961                         dev_name(&cdev->dev));
 962                 QETH_CARD_TEXT(card, 2, "ckirberr");
 963                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 964                 break;
 965         case -ETIMEDOUT:
 966                 dev_warn(&cdev->dev, "A hardware operation timed out"
 967                         " on the device\n");
 968                 QETH_CARD_TEXT(card, 2, "ckirberr");
 969                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 970                 if (intparm == QETH_RCD_PARM) {
 971                         if (card && (card->data.ccwdev == cdev)) {
 972                                 card->data.state = CH_STATE_DOWN;
 973                                 wake_up(&card->wait_q);
 974                         }
 975                 }
 976                 break;
 977         default:
 978                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 979                         dev_name(&cdev->dev), PTR_ERR(irb));
 980                 QETH_CARD_TEXT(card, 2, "ckirberr");
 981                 QETH_CARD_TEXT(card, 2, "  rc???");
 982         }
 983         return PTR_ERR(irb);
 984 }
 985
 986 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 987                 struct irb *irb)
 988 {
 989         int rc;
 990         int cstat, dstat;
 991         struct qeth_cmd_buffer *buffer;
 992         struct qeth_channel *channel;
 993         struct qeth_card *card;
 994         struct qeth_cmd_buffer *iob;
 995         __u8 index;
 996
 997         if (__qeth_check_irb_error(cdev, intparm, irb))
 998                 return;
 999         cstat = irb->scsw.cmd.cstat;
1000         dstat = irb->scsw.cmd.dstat;
1001
1002         card = CARD_FROM_CDEV(cdev);
1003         if (!card)
1004                 return;
1005
1006         QETH_CARD_TEXT(card, 5, "irq");
1007
1008         if (card->read.ccwdev == cdev) {
1009                 channel = &card->read;
1010                 QETH_CARD_TEXT(card, 5, "read");
1011         } else if (card->write.ccwdev == cdev) {
1012                 channel = &card->write;
1013                 QETH_CARD_TEXT(card, 5, "write");
1014         } else {
1015                 channel = &card->data;
1016                 QETH_CARD_TEXT(card, 5, "data");
1017         }
1018         atomic_set(&channel->irq_pending, 0);
1019
1020         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1021                 channel->state = CH_STATE_STOPPED;
1022
1023         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1024                 channel->state = CH_STATE_HALTED;
1025
1026         /*let's wake up immediately on data channel*/
1027         if ((channel == &card->data) && (intparm != 0) &&
1028             (intparm != QETH_RCD_PARM))
1029                 goto out;
1030
1031         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1032                 QETH_CARD_TEXT(card, 6, "clrchpar");
1033                 /* we don't have to handle this further */
1034                 intparm = 0;
1035         }
1036         if (intparm == QETH_HALT_CHANNEL_PARM) {
1037                 QETH_CARD_TEXT(card, 6, "hltchpar");
1038                 /* we don't have to handle this further */
1039                 intparm = 0;
1040         }
1041         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1042             (dstat & DEV_STAT_UNIT_CHECK) ||
1043             (cstat)) {
1044                 if (irb->esw.esw0.erw.cons) {
1045                         dev_warn(&channel->ccwdev->dev,
1046                                 "The qeth device driver failed to recover "
1047                                 "an error on the device\n");
1048                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1049                                 "0x%X dstat 0x%X\n",
1050                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1051                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1052                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1053                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1054                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1055                 }
1056                 if (intparm == QETH_RCD_PARM) {
1057                         channel->state = CH_STATE_DOWN;
1058                         goto out;
1059                 }
1060                 rc = qeth_get_problem(cdev, irb);
1061                 if (rc) {
1062                         qeth_clear_ipacmd_list(card);
1063                         qeth_schedule_recovery(card);
1064                         goto out;
1065                 }
1066         }
1067
1068         if (intparm == QETH_RCD_PARM) {
1069                 channel->state = CH_STATE_RCD_DONE;
1070                 goto out;
1071         }
1072         if (intparm) {
1073                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1074                 buffer->state = BUF_STATE_PROCESSED;
1075         }
1076         if (channel == &card->data)
1077                 return;
1078         if (channel == &card->read &&
1079             channel->state == CH_STATE_UP)
1080                 qeth_issue_next_read(card);
1081
1082         iob = channel->iob;
1083         index = channel->buf_no;
1084         while (iob[index].state == BUF_STATE_PROCESSED) {
1085                 if (iob[index].callback != NULL)
1086                         iob[index].callback(channel, iob + index);
1087
1088                 index = (index + 1) % QETH_CMD_BUFFER_NO;
1089         }
1090         channel->buf_no = index;
1091 out:
1092         wake_up(&card->wait_q);
1093         return;
1094 }
1095
1096 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1097                 struct qeth_qdio_out_buffer *buf,
1098                 enum iucv_tx_notify notification)
1099 {
1100         struct sk_buff *skb;
1101
1102         if (skb_queue_empty(&buf->skb_list))
1103                 goto out;
1104         skb = skb_peek(&buf->skb_list);
1105         while (skb) {
1106                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1107                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1108                 if (skb->protocol == ETH_P_AF_IUCV) {
1109                         if (skb->sk) {
1110                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1111                                 iucv->sk_txnotify(skb, notification);
1112                         }
1113                 }
1114                 if (skb_queue_is_last(&buf->skb_list, skb))
1115                         skb = NULL;
1116                 else
1117                         skb = skb_queue_next(&buf->skb_list, skb);
1118         }
1119 out:
1120         return;
1121 }
1122
1123 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1124 {
1125         struct sk_buff *skb;
1126         struct iucv_sock *iucv;
1127         int notify_general_error = 0;
1128
1129         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1130                 notify_general_error = 1;
1131
1132         /* release may never happen from within CQ tasklet scope */
1133         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1134
1135         skb = skb_dequeue(&buf->skb_list);
1136         while (skb) {
1137                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1138                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1139                 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1140                         if (skb->sk) {
1141                                 iucv = iucv_sk(skb->sk);
1142                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1143                         }
1144                 }
1145                 atomic_dec(&skb->users);
1146                 dev_kfree_skb_any(skb);
1147                 skb = skb_dequeue(&buf->skb_list);
1148         }
1149 }
1150
1151 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1152                 struct qeth_qdio_out_buffer *buf,
1153                 enum qeth_qdio_buffer_states newbufstate)
1154 {
1155         int i;
1156
1157         /* is PCI flag set on buffer? */
1158         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1159                 atomic_dec(&queue->set_pci_flags_count);
1160
1161         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1162                 qeth_release_skbs(buf);
1163         }
1164         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1165                 if (buf->buffer->element[i].addr && buf->is_header[i])
1166                         kmem_cache_free(qeth_core_header_cache,
1167                                 buf->buffer->element[i].addr);
1168                 buf->is_header[i] = 0;
1169                 buf->buffer->element[i].length = 0;
1170                 buf->buffer->element[i].addr = NULL;
1171                 buf->buffer->element[i].eflags = 0;
1172                 buf->buffer->element[i].sflags = 0;
1173         }
1174         buf->buffer->element[15].eflags = 0;
1175         buf->buffer->element[15].sflags = 0;
1176         buf->next_element_to_fill = 0;
1177         atomic_set(&buf->state, newbufstate);
1178 }
1179
1180 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1181 {
1182         int j;
1183
1184         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1185                 if (!q->bufs[j])
1186                         continue;
1187                 qeth_cleanup_handled_pending(q, j, 1);
1188                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1189                 if (free) {
1190                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1191                         q->bufs[j] = NULL;
1192                 }
1193         }
1194 }
1195
1196 void qeth_clear_qdio_buffers(struct qeth_card *card)
1197 {
1198         int i;
1199
1200         QETH_CARD_TEXT(card, 2, "clearqdbf");
1201         /* clear outbound buffers to free skbs */
1202         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1203                 if (card->qdio.out_qs[i]) {
1204                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1205                 }
1206         }
1207 }
1208 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1209
1210 static void qeth_free_buffer_pool(struct qeth_card *card)
1211 {
1212         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1213         int i = 0;
1214         list_for_each_entry_safe(pool_entry, tmp,
1215                                  &card->qdio.init_pool.entry_list, init_list){
1216                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1217                         free_page((unsigned long)pool_entry->elements[i]);
1218                 list_del(&pool_entry->init_list);
1219                 kfree(pool_entry);
1220         }
1221 }
1222
1223 static void qeth_free_qdio_buffers(struct qeth_card *card)
1224 {
1225         int i, j;
1226
1227         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1228                 QETH_QDIO_UNINITIALIZED)
1229                 return;
1230
1231         qeth_free_cq(card);
1232         cancel_delayed_work_sync(&card->buffer_reclaim_work);
1233         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1234                 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1235         kfree(card->qdio.in_q);
1236         card->qdio.in_q = NULL;
1237         /* inbound buffer pool */
1238         qeth_free_buffer_pool(card);
1239         /* free outbound qdio_qs */
1240         if (card->qdio.out_qs) {
1241                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1242                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1243                         kfree(card->qdio.out_qs[i]);
1244                 }
1245                 kfree(card->qdio.out_qs);
1246                 card->qdio.out_qs = NULL;
1247         }
1248 }
1249
1250 static void qeth_clean_channel(struct qeth_channel *channel)
1251 {
1252         int cnt;
1253
1254         QETH_DBF_TEXT(SETUP, 2, "freech");
1255         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1256                 kfree(channel->iob[cnt].data);
1257 }
1258
1259 static void qeth_set_single_write_queues(struct qeth_card *card)
1260 {
1261         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1262             (card->qdio.no_out_queues == 4))
1263                 qeth_free_qdio_buffers(card);
1264
1265         card->qdio.no_out_queues = 1;
1266         if (card->qdio.default_out_queue != 0)
1267                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1268
1269         card->qdio.default_out_queue = 0;
1270 }
1271
1272 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1273 {
1274         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1275             (card->qdio.no_out_queues == 1)) {
1276                 qeth_free_qdio_buffers(card);
1277                 card->qdio.default_out_queue = 2;
1278         }
1279         card->qdio.no_out_queues = 4;
1280 }
1281
1282 static void qeth_update_from_chp_desc(struct qeth_card *card)
1283 {
1284         struct ccw_device *ccwdev;
1285         struct channelPath_dsc {
1286                 u8 flags;
1287                 u8 lsn;
1288                 u8 desc;
1289                 u8 chpid;
1290                 u8 swla;
1291                 u8 zeroes;
1292                 u8 chla;
1293                 u8 chpp;
1294         } *chp_dsc;
1295
1296         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1297
1298         ccwdev = card->data.ccwdev;
1299         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1300         if (!chp_dsc)
1301                 goto out;
1302
1303         card->info.func_level = 0x4100 + chp_dsc->desc;
1304         if (card->info.type == QETH_CARD_TYPE_IQD)
1305                 goto out;
1306
1307         /* CHPP field bit 6 == 1 -> single queue */
1308         if ((chp_dsc->chpp & 0x02) == 0x02)
1309                 qeth_set_single_write_queues(card);
1310         else
1311                 qeth_set_multiple_write_queues(card);
1312 out:
1313         kfree(chp_dsc);
1314         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1315         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1316 }
1317
1318 static void qeth_init_qdio_info(struct qeth_card *card)
1319 {
1320         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1321         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1322         /* inbound */
1323         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1324         if (card->info.type == QETH_CARD_TYPE_IQD)
1325                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1326         else
1327                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1328         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1329         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1330         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1331 }
1332
1333 static void qeth_set_intial_options(struct qeth_card *card)
1334 {
1335         card->options.route4.type = NO_ROUTER;
1336         card->options.route6.type = NO_ROUTER;
1337         card->options.fake_broadcast = 0;
1338         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1339         card->options.performance_stats = 0;
1340         card->options.rx_sg_cb = QETH_RX_SG_CB;
1341         card->options.isolation = ISOLATION_MODE_NONE;
1342         card->options.cq = QETH_CQ_DISABLED;
1343 }
1344
1345 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1346 {
1347         unsigned long flags;
1348         int rc = 0;
1349
1350         spin_lock_irqsave(&card->thread_mask_lock, flags);
1351         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1352                         (u8) card->thread_start_mask,
1353                         (u8) card->thread_allowed_mask,
1354                         (u8) card->thread_running_mask);
1355         rc = (card->thread_start_mask & thread);
1356         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1357         return rc;
1358 }
1359
1360 static void qeth_start_kernel_thread(struct work_struct *work)
1361 {
1362         struct task_struct *ts;
1363         struct qeth_card *card = container_of(work, struct qeth_card,
1364                                         kernel_thread_starter);
1365         QETH_CARD_TEXT(card , 2, "strthrd");
1366
1367         if (card->read.state != CH_STATE_UP &&
1368             card->write.state != CH_STATE_UP)
1369                 return;
1370         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1371                 ts = kthread_run(card->discipline->recover, (void *)card,
1372                                 "qeth_recover");
1373                 if (IS_ERR(ts)) {
1374                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1375                         qeth_clear_thread_running_bit(card,
1376                                 QETH_RECOVER_THREAD);
1377                 }
1378         }
1379 }
1380
1381 static int qeth_setup_card(struct qeth_card *card)
1382 {
1383
1384         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1385         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1386
1387         card->read.state  = CH_STATE_DOWN;
1388         card->write.state = CH_STATE_DOWN;
1389         card->data.state  = CH_STATE_DOWN;
1390         card->state = CARD_STATE_DOWN;
1391         card->lan_online = 0;
1392         card->read_or_write_problem = 0;
1393         card->dev = NULL;
1394         spin_lock_init(&card->vlanlock);
1395         spin_lock_init(&card->mclock);
1396         spin_lock_init(&card->lock);
1397         spin_lock_init(&card->ip_lock);
1398         spin_lock_init(&card->thread_mask_lock);
1399         mutex_init(&card->conf_mutex);
1400         mutex_init(&card->discipline_mutex);
1401         card->thread_start_mask = 0;
1402         card->thread_allowed_mask = 0;
1403         card->thread_running_mask = 0;
1404         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1405         INIT_LIST_HEAD(&card->ip_list);
1406         INIT_LIST_HEAD(card->ip_tbd_list);
1407         INIT_LIST_HEAD(&card->cmd_waiter_list);
1408         init_waitqueue_head(&card->wait_q);
1409         /* initial options */
1410         qeth_set_intial_options(card);
1411         /* IP address takeover */
1412         INIT_LIST_HEAD(&card->ipato.entries);
1413         card->ipato.enabled = 0;
1414         card->ipato.invert4 = 0;
1415         card->ipato.invert6 = 0;
1416         /* init QDIO stuff */
1417         qeth_init_qdio_info(card);
1418         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1419         return 0;
1420 }
1421
1422 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1423 {
1424         struct qeth_card *card = container_of(slr, struct qeth_card,
1425                                         qeth_service_level);
1426         if (card->info.mcl_level[0])
1427                 seq_printf(m, "qeth: %s firmware level %s\n",
1428                         CARD_BUS_ID(card), card->info.mcl_level);
1429 }
1430
1431 static struct qeth_card *qeth_alloc_card(void)
1432 {
1433         struct qeth_card *card;
1434
1435         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1436         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1437         if (!card)
1438                 goto out;
1439         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1440         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1441         if (!card->ip_tbd_list) {
1442                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1443                 goto out_card;
1444         }
1445         if (qeth_setup_channel(&card->read))
1446                 goto out_ip;
1447         if (qeth_setup_channel(&card->write))
1448                 goto out_channel;
1449         card->options.layer2 = -1;
1450         card->qeth_service_level.seq_print = qeth_core_sl_print;
1451         register_service_level(&card->qeth_service_level);
1452         return card;
1453
1454 out_channel:
1455         qeth_clean_channel(&card->read);
1456 out_ip:
1457         kfree(card->ip_tbd_list);
1458 out_card:
1459         kfree(card);
1460 out:
1461         return NULL;
1462 }
1463
1464 static int qeth_determine_card_type(struct qeth_card *card)
1465 {
1466         int i = 0;
1467
1468         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1469
1470         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1471         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1472         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1473                 if ((CARD_RDEV(card)->id.dev_type ==
1474                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1475                     (CARD_RDEV(card)->id.dev_model ==
1476                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1477                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1478                         card->qdio.no_out_queues =
1479                                 known_devices[i][QETH_QUEUE_NO_IND];
1480                         card->qdio.no_in_queues = 1;
1481                         card->info.is_multicast_different =
1482                                 known_devices[i][QETH_MULTICAST_IND];
1483                         qeth_update_from_chp_desc(card);
1484                         return 0;
1485                 }
1486                 i++;
1487         }
1488         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1489         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1490                 "unknown type\n");
1491         return -ENOENT;
1492 }
1493
1494 static int qeth_clear_channel(struct qeth_channel *channel)
1495 {
1496         unsigned long flags;
1497         struct qeth_card *card;
1498         int rc;
1499
1500         card = CARD_FROM_CDEV(channel->ccwdev);
1501         QETH_CARD_TEXT(card, 3, "clearch");
1502         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1503         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1504         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1505
1506         if (rc)
1507                 return rc;
1508         rc = wait_event_interruptible_timeout(card->wait_q,
1509                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1510         if (rc == -ERESTARTSYS)
1511                 return rc;
1512         if (channel->state != CH_STATE_STOPPED)
1513                 return -ETIME;
1514         channel->state = CH_STATE_DOWN;
1515         return 0;
1516 }
1517
1518 static int qeth_halt_channel(struct qeth_channel *channel)
1519 {
1520         unsigned long flags;
1521         struct qeth_card *card;
1522         int rc;
1523
1524         card = CARD_FROM_CDEV(channel->ccwdev);
1525         QETH_CARD_TEXT(card, 3, "haltch");
1526         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1527         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1528         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1529
1530         if (rc)
1531                 return rc;
1532         rc = wait_event_interruptible_timeout(card->wait_q,
1533                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1534         if (rc == -ERESTARTSYS)
1535                 return rc;
1536         if (channel->state != CH_STATE_HALTED)
1537                 return -ETIME;
1538         return 0;
1539 }
1540
1541 static int qeth_halt_channels(struct qeth_card *card)
1542 {
1543         int rc1 = 0, rc2 = 0, rc3 = 0;
1544
1545         QETH_CARD_TEXT(card, 3, "haltchs");
1546         rc1 = qeth_halt_channel(&card->read);
1547         rc2 = qeth_halt_channel(&card->write);
1548         rc3 = qeth_halt_channel(&card->data);
1549         if (rc1)
1550                 return rc1;
1551         if (rc2)
1552                 return rc2;
1553         return rc3;
1554 }
1555
1556 static int qeth_clear_channels(struct qeth_card *card)
1557 {
1558         int rc1 = 0, rc2 = 0, rc3 = 0;
1559
1560         QETH_CARD_TEXT(card, 3, "clearchs");
1561         rc1 = qeth_clear_channel(&card->read);
1562         rc2 = qeth_clear_channel(&card->write);
1563         rc3 = qeth_clear_channel(&card->data);
1564         if (rc1)
1565                 return rc1;
1566         if (rc2)
1567                 return rc2;
1568         return rc3;
1569 }
1570
1571 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1572 {
1573         int rc = 0;
1574
1575         QETH_CARD_TEXT(card, 3, "clhacrd");
1576
1577         if (halt)
1578                 rc = qeth_halt_channels(card);
1579         if (rc)
1580                 return rc;
1581         return qeth_clear_channels(card);
1582 }
1583
1584 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1585 {
1586         int rc = 0;
1587
1588         QETH_CARD_TEXT(card, 3, "qdioclr");
1589         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1590                 QETH_QDIO_CLEANING)) {
1591         case QETH_QDIO_ESTABLISHED:
1592                 if (card->info.type == QETH_CARD_TYPE_IQD)
1593                         rc = qdio_shutdown(CARD_DDEV(card),
1594                                 QDIO_FLAG_CLEANUP_USING_HALT);
1595                 else
1596                         rc = qdio_shutdown(CARD_DDEV(card),
1597                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1598                 if (rc)
1599                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1600                 qdio_free(CARD_DDEV(card));
1601                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1602                 break;
1603         case QETH_QDIO_CLEANING:
1604                 return rc;
1605         default:
1606                 break;
1607         }
1608         rc = qeth_clear_halt_card(card, use_halt);
1609         if (rc)
1610                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1611         card->state = CARD_STATE_DOWN;
1612         return rc;
1613 }
1614 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1615
1616 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1617                                int *length)
1618 {
1619         struct ciw *ciw;
1620         char *rcd_buf;
1621         int ret;
1622         struct qeth_channel *channel = &card->data;
1623         unsigned long flags;
1624
1625         /*
1626          * scan for RCD command in extended SenseID data
1627          */
1628         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1629         if (!ciw || ciw->cmd == 0)
1630                 return -EOPNOTSUPP;
1631         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1632         if (!rcd_buf)
1633                 return -ENOMEM;
1634
1635         channel->ccw.cmd_code = ciw->cmd;
1636         channel->ccw.cda = (__u32) __pa(rcd_buf);
1637         channel->ccw.count = ciw->count;
1638         channel->ccw.flags = CCW_FLAG_SLI;
1639         channel->state = CH_STATE_RCD;
1640         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1641         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1642                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1643                                        QETH_RCD_TIMEOUT);
1644         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1645         if (!ret)
1646                 wait_event(card->wait_q,
1647                            (channel->state == CH_STATE_RCD_DONE ||
1648                             channel->state == CH_STATE_DOWN));
1649         if (channel->state == CH_STATE_DOWN)
1650                 ret = -EIO;
1651         else
1652                 channel->state = CH_STATE_DOWN;
1653         if (ret) {
1654                 kfree(rcd_buf);
1655                 *buffer = NULL;
1656                 *length = 0;
1657         } else {
1658                 *length = ciw->count;
1659                 *buffer = rcd_buf;
1660         }
1661         return ret;
1662 }
1663
1664 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1665 {
1666         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1667         card->info.chpid = prcd[30];
1668         card->info.unit_addr2 = prcd[31];
1669         card->info.cula = prcd[63];
1670         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1671                                (prcd[0x11] == _ascebc['M']));
1672 }
1673
1674 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1675 {
1676         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1677
1678         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1679             (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1680                 card->info.blkt.time_total = 250;
1681                 card->info.blkt.inter_packet = 5;
1682                 card->info.blkt.inter_packet_jumbo = 15;
1683         } else {
1684                 card->info.blkt.time_total = 0;
1685                 card->info.blkt.inter_packet = 0;
1686                 card->info.blkt.inter_packet_jumbo = 0;
1687         }
1688 }
1689
1690 static void qeth_init_tokens(struct qeth_card *card)
1691 {
1692         card->token.issuer_rm_w = 0x00010103UL;
1693         card->token.cm_filter_w = 0x00010108UL;
1694         card->token.cm_connection_w = 0x0001010aUL;
1695         card->token.ulp_filter_w = 0x0001010bUL;
1696         card->token.ulp_connection_w = 0x0001010dUL;
1697 }
1698
1699 static void qeth_init_func_level(struct qeth_card *card)
1700 {
1701         switch (card->info.type) {
1702         case QETH_CARD_TYPE_IQD:
1703                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1704                 break;
1705         case QETH_CARD_TYPE_OSD:
1706         case QETH_CARD_TYPE_OSN:
1707                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1708                 break;
1709         default:
1710                 break;
1711         }
1712 }
1713
1714 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1715                 void (*idx_reply_cb)(struct qeth_channel *,
1716                         struct qeth_cmd_buffer *))
1717 {
1718         struct qeth_cmd_buffer *iob;
1719         unsigned long flags;
1720         int rc;
1721         struct qeth_card *card;
1722
1723         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1724         card = CARD_FROM_CDEV(channel->ccwdev);
1725         iob = qeth_get_buffer(channel);
1726         iob->callback = idx_reply_cb;
1727         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1728         channel->ccw.count = QETH_BUFSIZE;
1729         channel->ccw.cda = (__u32) __pa(iob->data);
1730
1731         wait_event(card->wait_q,
1732                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1733         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1734         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1735         rc = ccw_device_start(channel->ccwdev,
1736                               &channel->ccw, (addr_t) iob, 0, 0);
1737         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1738
1739         if (rc) {
1740                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1741                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1742                 atomic_set(&channel->irq_pending, 0);
1743                 wake_up(&card->wait_q);
1744                 return rc;
1745         }
1746         rc = wait_event_interruptible_timeout(card->wait_q,
1747                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1748         if (rc == -ERESTARTSYS)
1749                 return rc;
1750         if (channel->state != CH_STATE_UP) {
1751                 rc = -ETIME;
1752                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1753                 qeth_clear_cmd_buffers(channel);
1754         } else
1755                 rc = 0;
1756         return rc;
1757 }
1758
1759 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1760                 void (*idx_reply_cb)(struct qeth_channel *,
1761                         struct qeth_cmd_buffer *))
1762 {
1763         struct qeth_card *card;
1764         struct qeth_cmd_buffer *iob;
1765         unsigned long flags;
1766         __u16 temp;
1767         __u8 tmp;
1768         int rc;
1769         struct ccw_dev_id temp_devid;
1770
1771         card = CARD_FROM_CDEV(channel->ccwdev);
1772
1773         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1774
1775         iob = qeth_get_buffer(channel);
1776         iob->callback = idx_reply_cb;
1777         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1778         channel->ccw.count = IDX_ACTIVATE_SIZE;
1779         channel->ccw.cda = (__u32) __pa(iob->data);
1780         if (channel == &card->write) {
1781                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1782                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1783                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1784                 card->seqno.trans_hdr++;
1785         } else {
1786                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1787                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1788                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1789         }
1790         tmp = ((__u8)card->info.portno) | 0x80;
1791         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1792         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1793                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1794         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1795                &card->info.func_level, sizeof(__u16));
1796         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1797         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1798         temp = (card->info.cula << 8) + card->info.unit_addr2;
1799         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1800
1801         wait_event(card->wait_q,
1802                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1803         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1804         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1805         rc = ccw_device_start(channel->ccwdev,
1806                               &channel->ccw, (addr_t) iob, 0, 0);
1807         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1808
1809         if (rc) {
1810                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1811                         rc);
1812                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1813                 atomic_set(&channel->irq_pending, 0);
1814                 wake_up(&card->wait_q);
1815                 return rc;
1816         }
1817         rc = wait_event_interruptible_timeout(card->wait_q,
1818                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1819         if (rc == -ERESTARTSYS)
1820                 return rc;
1821         if (channel->state != CH_STATE_ACTIVATING) {
1822                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1823                         " failed to recover an error on the device\n");
1824                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1825                         dev_name(&channel->ccwdev->dev));
1826                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1827                 qeth_clear_cmd_buffers(channel);
1828                 return -ETIME;
1829         }
1830         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1831 }
1832
1833 static int qeth_peer_func_level(int level)
1834 {
1835         if ((level & 0xff) == 8)
1836                 return (level & 0xff) + 0x400;
1837         if (((level >> 8) & 3) == 1)
1838                 return (level & 0xff) + 0x200;
1839         return level;
1840 }
1841
1842 static void qeth_idx_write_cb(struct qeth_channel *channel,
1843                 struct qeth_cmd_buffer *iob)
1844 {
1845         struct qeth_card *card;
1846         __u16 temp;
1847
1848         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1849
1850         if (channel->state == CH_STATE_DOWN) {
1851                 channel->state = CH_STATE_ACTIVATING;
1852                 goto out;
1853         }
1854         card = CARD_FROM_CDEV(channel->ccwdev);
1855
1856         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1857                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1858                         dev_err(&card->write.ccwdev->dev,
1859                                 "The adapter is used exclusively by another "
1860                                 "host\n");
1861                 else
1862                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1863                                 " negative reply\n",
1864                                 dev_name(&card->write.ccwdev->dev));
1865                 goto out;
1866         }
1867         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1868         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1869                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1870                         "function level mismatch (sent: 0x%x, received: "
1871                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1872                         card->info.func_level, temp);
1873                 goto out;
1874         }
1875         channel->state = CH_STATE_UP;
1876 out:
1877         qeth_release_buffer(channel, iob);
1878 }
1879
1880 static void qeth_idx_read_cb(struct qeth_channel *channel,
1881                 struct qeth_cmd_buffer *iob)
1882 {
1883         struct qeth_card *card;
1884         __u16 temp;
1885
1886         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1887         if (channel->state == CH_STATE_DOWN) {
1888                 channel->state = CH_STATE_ACTIVATING;
1889                 goto out;
1890         }
1891
1892         card = CARD_FROM_CDEV(channel->ccwdev);
1893         if (qeth_check_idx_response(card, iob->data))
1894                         goto out;
1895
1896         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1897                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1898                 case QETH_IDX_ACT_ERR_EXCL:
1899                         dev_err(&card->write.ccwdev->dev,
1900                                 "The adapter is used exclusively by another "
1901                                 "host\n");
1902                         break;
1903                 case QETH_IDX_ACT_ERR_AUTH:
1904                 case QETH_IDX_ACT_ERR_AUTH_USER:
1905                         dev_err(&card->read.ccwdev->dev,
1906                                 "Setting the device online failed because of "
1907                                 "insufficient authorization\n");
1908                         break;
1909                 default:
1910                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1911                                 " negative reply\n",
1912                                 dev_name(&card->read.ccwdev->dev));
1913                 }
1914                 QETH_CARD_TEXT_(card, 2, "idxread%c",
1915                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
1916                 goto out;
1917         }
1918
1919 /**
1920  *  * temporary fix for microcode bug
1921  *   * to revert it,replace OR by AND
1922  *    */
1923         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1924              (card->info.type == QETH_CARD_TYPE_OSD))
1925                 card->info.portname_required = 1;
1926
1927         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1928         if (temp != qeth_peer_func_level(card->info.func_level)) {
1929                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1930                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1931                         dev_name(&card->read.ccwdev->dev),
1932                         card->info.func_level, temp);
1933                 goto out;
1934         }
1935         memcpy(&card->token.issuer_rm_r,
1936                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1937                QETH_MPC_TOKEN_LENGTH);
1938         memcpy(&card->info.mcl_level[0],
1939                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1940         channel->state = CH_STATE_UP;
1941 out:
1942         qeth_release_buffer(channel, iob);
1943 }
1944
1945 void qeth_prepare_control_data(struct qeth_card *card, int len,
1946                 struct qeth_cmd_buffer *iob)
1947 {
1948         qeth_setup_ccw(&card->write, iob->data, len);
1949         iob->callback = qeth_release_buffer;
1950
1951         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1952                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1953         card->seqno.trans_hdr++;
1954         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1955                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1956         card->seqno.pdu_hdr++;
1957         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1958                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1959         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1960 }
1961 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1962
1963 int qeth_send_control_data(struct qeth_card *card, int len,
1964                 struct qeth_cmd_buffer *iob,
1965                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1966                         unsigned long),
1967                 void *reply_param)
1968 {
1969         int rc;
1970         unsigned long flags;
1971         struct qeth_reply *reply = NULL;
1972         unsigned long timeout, event_timeout;
1973         struct qeth_ipa_cmd *cmd;
1974
1975         QETH_CARD_TEXT(card, 2, "sendctl");
1976
1977         if (card->read_or_write_problem) {
1978                 qeth_release_buffer(iob->channel, iob);
1979                 return -EIO;
1980         }
1981         reply = qeth_alloc_reply(card);
1982         if (!reply) {
1983                 return -ENOMEM;
1984         }
1985         reply->callback = reply_cb;
1986         reply->param = reply_param;
1987         if (card->state == CARD_STATE_DOWN)
1988                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1989         else
1990                 reply->seqno = card->seqno.ipa++;
1991         init_waitqueue_head(&reply->wait_q);
1992         spin_lock_irqsave(&card->lock, flags);
1993         list_add_tail(&reply->list, &card->cmd_waiter_list);
1994         spin_unlock_irqrestore(&card->lock, flags);
1995         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1996
1997         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1998         qeth_prepare_control_data(card, len, iob);
1999
2000         if (IS_IPA(iob->data))
2001                 event_timeout = QETH_IPA_TIMEOUT;
2002         else
2003                 event_timeout = QETH_TIMEOUT;
2004         timeout = jiffies + event_timeout;
2005
2006         QETH_CARD_TEXT(card, 6, "noirqpnd");
2007         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2008         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2009                               (addr_t) iob, 0, 0);
2010         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2011         if (rc) {
2012                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2013                         "ccw_device_start rc = %i\n",
2014                         dev_name(&card->write.ccwdev->dev), rc);
2015                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2016                 spin_lock_irqsave(&card->lock, flags);
2017                 list_del_init(&reply->list);
2018                 qeth_put_reply(reply);
2019                 spin_unlock_irqrestore(&card->lock, flags);
2020                 qeth_release_buffer(iob->channel, iob);
2021                 atomic_set(&card->write.irq_pending, 0);
2022                 wake_up(&card->wait_q);
2023                 return rc;
2024         }
2025
2026         /* we have only one long running ipassist, since we can ensure
2027            process context of this command we can sleep */
2028         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2029         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2030             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2031                 if (!wait_event_timeout(reply->wait_q,
2032                     atomic_read(&reply->received), event_timeout))
2033                         goto time_err;
2034         } else {
2035                 while (!atomic_read(&reply->received)) {
2036                         if (time_after(jiffies, timeout))
2037                                 goto time_err;
2038                         cpu_relax();
2039                 }
2040         }
2041
2042         if (reply->rc == -EIO)
2043                 goto error;
2044         rc = reply->rc;
2045         qeth_put_reply(reply);
2046         return rc;
2047
2048 time_err:
2049         reply->rc = -ETIME;
2050         spin_lock_irqsave(&reply->card->lock, flags);
2051         list_del_init(&reply->list);
2052         spin_unlock_irqrestore(&reply->card->lock, flags);
2053         atomic_inc(&reply->received);
2054 error:
2055         atomic_set(&card->write.irq_pending, 0);
2056         qeth_release_buffer(iob->channel, iob);
2057         card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2058         rc = reply->rc;
2059         qeth_put_reply(reply);
2060         return rc;
2061 }
2062 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2063
2064 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2065                 unsigned long data)
2066 {
2067         struct qeth_cmd_buffer *iob;
2068
2069         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2070
2071         iob = (struct qeth_cmd_buffer *) data;
2072         memcpy(&card->token.cm_filter_r,
2073                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2074                QETH_MPC_TOKEN_LENGTH);
2075         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2076         return 0;
2077 }
2078
2079 static int qeth_cm_enable(struct qeth_card *card)
2080 {
2081         int rc;
2082         struct qeth_cmd_buffer *iob;
2083
2084         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2085
2086         iob = qeth_wait_for_buffer(&card->write);
2087         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2088         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2089                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2090         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2091                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2092
2093         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2094                                     qeth_cm_enable_cb, NULL);
2095         return rc;
2096 }
2097
2098 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2099                 unsigned long data)
2100 {
2101
2102         struct qeth_cmd_buffer *iob;
2103
2104         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2105
2106         iob = (struct qeth_cmd_buffer *) data;
2107         memcpy(&card->token.cm_connection_r,
2108                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2109                QETH_MPC_TOKEN_LENGTH);
2110         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2111         return 0;
2112 }
2113
2114 static int qeth_cm_setup(struct qeth_card *card)
2115 {
2116         int rc;
2117         struct qeth_cmd_buffer *iob;
2118
2119         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2120
2121         iob = qeth_wait_for_buffer(&card->write);
2122         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2123         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2124                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2125         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2126                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2127         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2128                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2129         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2130                                     qeth_cm_setup_cb, NULL);
2131         return rc;
2132
2133 }
2134
2135 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2136 {
2137         switch (card->info.type) {
2138         case QETH_CARD_TYPE_UNKNOWN:
2139                 return 1500;
2140         case QETH_CARD_TYPE_IQD:
2141                 return card->info.max_mtu;
2142         case QETH_CARD_TYPE_OSD:
2143                 switch (card->info.link_type) {
2144                 case QETH_LINK_TYPE_HSTR:
2145                 case QETH_LINK_TYPE_LANE_TR:
2146                         return 2000;
2147                 default:
2148                         return 1492;
2149                 }
2150         case QETH_CARD_TYPE_OSM:
2151         case QETH_CARD_TYPE_OSX:
2152                 return 1492;
2153         default:
2154                 return 1500;
2155         }
2156 }
2157
2158 static inline int qeth_get_mtu_outof_framesize(int framesize)
2159 {
2160         switch (framesize) {
2161         case 0x4000:
2162                 return 8192;
2163         case 0x6000:
2164                 return 16384;
2165         case 0xa000:
2166                 return 32768;
2167         case 0xffff:
2168                 return 57344;
2169         default:
2170                 return 0;
2171         }
2172 }
2173
2174 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2175 {
2176         switch (card->info.type) {
2177         case QETH_CARD_TYPE_OSD:
2178         case QETH_CARD_TYPE_OSM:
2179         case QETH_CARD_TYPE_OSX:
2180         case QETH_CARD_TYPE_IQD:
2181                 return ((mtu >= 576) &&
2182                         (mtu <= card->info.max_mtu));
2183         case QETH_CARD_TYPE_OSN:
2184         case QETH_CARD_TYPE_UNKNOWN:
2185         default:
2186                 return 1;
2187         }
2188 }
2189
2190 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2191                 unsigned long data)
2192 {
2193
2194         __u16 mtu, framesize;
2195         __u16 len;
2196         __u8 link_type;
2197         struct qeth_cmd_buffer *iob;
2198
2199         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2200
2201         iob = (struct qeth_cmd_buffer *) data;
2202         memcpy(&card->token.ulp_filter_r,
2203                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2204                QETH_MPC_TOKEN_LENGTH);
2205         if (card->info.type == QETH_CARD_TYPE_IQD) {
2206                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2207                 mtu = qeth_get_mtu_outof_framesize(framesize);
2208                 if (!mtu) {
2209                         iob->rc = -EINVAL;
2210                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2211                         return 0;
2212                 }
2213                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2214                         /* frame size has changed */
2215                         if (card->dev &&
2216                             ((card->dev->mtu == card->info.initial_mtu) ||
2217                              (card->dev->mtu > mtu)))
2218                                 card->dev->mtu = mtu;
2219                         qeth_free_qdio_buffers(card);
2220                 }
2221                 card->info.initial_mtu = mtu;
2222                 card->info.max_mtu = mtu;
2223                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2224         } else {
2225                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2226                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2227                         iob->data);
2228                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2229         }
2230
2231         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2232         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2233                 memcpy(&link_type,
2234                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2235                 card->info.link_type = link_type;
2236         } else
2237                 card->info.link_type = 0;
2238         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2239         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2240         return 0;
2241 }
2242
2243 static int qeth_ulp_enable(struct qeth_card *card)
2244 {
2245         int rc;
2246         char prot_type;
2247         struct qeth_cmd_buffer *iob;
2248
2249         /*FIXME: trace view callbacks*/
2250         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2251
2252         iob = qeth_wait_for_buffer(&card->write);
2253         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2254
2255         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2256                 (__u8) card->info.portno;
2257         if (card->options.layer2)
2258                 if (card->info.type == QETH_CARD_TYPE_OSN)
2259                         prot_type = QETH_PROT_OSN2;
2260                 else
2261                         prot_type = QETH_PROT_LAYER2;
2262         else
2263                 prot_type = QETH_PROT_TCPIP;
2264
2265         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2266         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2267                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2268         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2269                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2270         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2271                card->info.portname, 9);
2272         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2273                                     qeth_ulp_enable_cb, NULL);
2274         return rc;
2275
2276 }
2277
2278 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2279                 unsigned long data)
2280 {
2281         struct qeth_cmd_buffer *iob;
2282
2283         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2284
2285         iob = (struct qeth_cmd_buffer *) data;
2286         memcpy(&card->token.ulp_connection_r,
2287                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2288                QETH_MPC_TOKEN_LENGTH);
2289         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2290                      3)) {
2291                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2292                 dev_err(&card->gdev->dev, "A connection could not be "
2293                         "established because of an OLM limit\n");
2294                 iob->rc = -EMLINK;
2295         }
2296         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2297         return 0;
2298 }
2299
2300 static int qeth_ulp_setup(struct qeth_card *card)
2301 {
2302         int rc;
2303         __u16 temp;
2304         struct qeth_cmd_buffer *iob;
2305         struct ccw_dev_id dev_id;
2306
2307         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2308
2309         iob = qeth_wait_for_buffer(&card->write);
2310         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2311
2312         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2313                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2314         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2315                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2316         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2317                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2318
2319         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2320         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2321         temp = (card->info.cula << 8) + card->info.unit_addr2;
2322         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2323         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2324                                     qeth_ulp_setup_cb, NULL);
2325         return rc;
2326 }
2327
2328 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2329 {
2330         int rc;
2331         struct qeth_qdio_out_buffer *newbuf;
2332
2333         rc = 0;
2334         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2335         if (!newbuf) {
2336                 rc = -ENOMEM;
2337                 goto out;
2338         }
2339         newbuf->buffer = &q->qdio_bufs[bidx];
2340         skb_queue_head_init(&newbuf->skb_list);
2341         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2342         newbuf->q = q;
2343         newbuf->aob = NULL;
2344         newbuf->next_pending = q->bufs[bidx];
2345         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2346         q->bufs[bidx] = newbuf;
2347         if (q->bufstates) {
2348                 q->bufstates[bidx].user = newbuf;
2349                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2350                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2351                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2352                                 (long) newbuf->next_pending);
2353         }
2354 out:
2355         return rc;
2356 }
2357
2358
2359 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2360 {
2361         int i, j;
2362
2363         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2364
2365         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2366                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2367                 return 0;
2368
2369         card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2370                                    GFP_KERNEL);
2371         if (!card->qdio.in_q)
2372                 goto out_nomem;
2373         QETH_DBF_TEXT(SETUP, 2, "inq");
2374         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2375         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2376         /* give inbound qeth_qdio_buffers their qdio_buffers */
2377         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2378                 card->qdio.in_q->bufs[i].buffer =
2379                         &card->qdio.in_q->qdio_bufs[i];
2380                 card->qdio.in_q->bufs[i].rx_skb = NULL;
2381         }
2382         /* inbound buffer pool */
2383         if (qeth_alloc_buffer_pool(card))
2384                 goto out_freeinq;
2385
2386         /* outbound */
2387         card->qdio.out_qs =
2388                 kzalloc(card->qdio.no_out_queues *
2389                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2390         if (!card->qdio.out_qs)
2391                 goto out_freepool;
2392         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2393                 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2394                                                GFP_KERNEL);
2395                 if (!card->qdio.out_qs[i])
2396                         goto out_freeoutq;
2397                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2398                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2399                 card->qdio.out_qs[i]->queue_no = i;
2400                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2401                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2402                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2403                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2404                                 goto out_freeoutqbufs;
2405                 }
2406         }
2407
2408         /* completion */
2409         if (qeth_alloc_cq(card))
2410                 goto out_freeoutq;
2411
2412         return 0;
2413
2414 out_freeoutqbufs:
2415         while (j > 0) {
2416                 --j;
2417                 kmem_cache_free(qeth_qdio_outbuf_cache,
2418                                 card->qdio.out_qs[i]->bufs[j]);
2419                 card->qdio.out_qs[i]->bufs[j] = NULL;
2420         }
2421 out_freeoutq:
2422         while (i > 0) {
2423                 kfree(card->qdio.out_qs[--i]);
2424                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2425         }
2426         kfree(card->qdio.out_qs);
2427         card->qdio.out_qs = NULL;
2428 out_freepool:
2429         qeth_free_buffer_pool(card);
2430 out_freeinq:
2431         kfree(card->qdio.in_q);
2432         card->qdio.in_q = NULL;
2433 out_nomem:
2434         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2435         return -ENOMEM;
2436 }
2437
2438 static void qeth_create_qib_param_field(struct qeth_card *card,
2439                 char *param_field)
2440 {
2441
2442         param_field[0] = _ascebc['P'];
2443         param_field[1] = _ascebc['C'];
2444         param_field[2] = _ascebc['I'];
2445         param_field[3] = _ascebc['T'];
2446         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2447         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2448         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2449 }
2450
2451 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2452                 char *param_field)
2453 {
2454         param_field[16] = _ascebc['B'];
2455         param_field[17] = _ascebc['L'];
2456         param_field[18] = _ascebc['K'];
2457         param_field[19] = _ascebc['T'];
2458         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2459         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2460         *((unsigned int *) (&param_field[28])) =
2461                 card->info.blkt.inter_packet_jumbo;
2462 }
2463
2464 static int qeth_qdio_activate(struct qeth_card *card)
2465 {
2466         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2467         return qdio_activate(CARD_DDEV(card));
2468 }
2469
2470 static int qeth_dm_act(struct qeth_card *card)
2471 {
2472         int rc;
2473         struct qeth_cmd_buffer *iob;
2474
2475         QETH_DBF_TEXT(SETUP, 2, "dmact");
2476
2477         iob = qeth_wait_for_buffer(&card->write);
2478         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2479
2480         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2481                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2482         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2483                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2484         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2485         return rc;
2486 }
2487
2488 static int qeth_mpc_initialize(struct qeth_card *card)
2489 {
2490         int rc;
2491
2492         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2493
2494         rc = qeth_issue_next_read(card);
2495         if (rc) {
2496                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2497                 return rc;
2498         }
2499         rc = qeth_cm_enable(card);
2500         if (rc) {
2501                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2502                 goto out_qdio;
2503         }
2504         rc = qeth_cm_setup(card);
2505         if (rc) {
2506                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2507                 goto out_qdio;
2508         }
2509         rc = qeth_ulp_enable(card);
2510         if (rc) {
2511                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2512                 goto out_qdio;
2513         }
2514         rc = qeth_ulp_setup(card);
2515         if (rc) {
2516                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2517                 goto out_qdio;
2518         }
2519         rc = qeth_alloc_qdio_buffers(card);
2520         if (rc) {
2521                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2522                 goto out_qdio;
2523         }
2524         rc = qeth_qdio_establish(card);
2525         if (rc) {
2526                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2527                 qeth_free_qdio_buffers(card);
2528                 goto out_qdio;
2529         }
2530         rc = qeth_qdio_activate(card);
2531         if (rc) {
2532                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2533                 goto out_qdio;
2534         }
2535         rc = qeth_dm_act(card);
2536         if (rc) {
2537                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2538                 goto out_qdio;
2539         }
2540
2541         return 0;
2542 out_qdio:
2543         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2544         return rc;
2545 }
2546
2547 static void qeth_print_status_with_portname(struct qeth_card *card)
2548 {
2549         char dbf_text[15];
2550         int i;
2551
2552         sprintf(dbf_text, "%s", card->info.portname + 1);
2553         for (i = 0; i < 8; i++)
2554                 dbf_text[i] =
2555                         (char) _ebcasc[(__u8) dbf_text[i]];
2556         dbf_text[8] = 0;
2557         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2558                "with link type %s (portname: %s)\n",
2559                qeth_get_cardname(card),
2560                (card->info.mcl_level[0]) ? " (level: " : "",
2561                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2562                (card->info.mcl_level[0]) ? ")" : "",
2563                qeth_get_cardname_short(card),
2564                dbf_text);
2565
2566 }
2567
2568 static void qeth_print_status_no_portname(struct qeth_card *card)
2569 {
2570         if (card->info.portname[0])
2571                 dev_info(&card->gdev->dev, "Device is a%s "
2572                        "card%s%s%s\nwith link type %s "
2573                        "(no portname needed by interface).\n",
2574                        qeth_get_cardname(card),
2575                        (card->info.mcl_level[0]) ? " (level: " : "",
2576                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2577                        (card->info.mcl_level[0]) ? ")" : "",
2578                        qeth_get_cardname_short(card));
2579         else
2580                 dev_info(&card->gdev->dev, "Device is a%s "
2581                        "card%s%s%s\nwith link type %s.\n",
2582                        qeth_get_cardname(card),
2583                        (card->info.mcl_level[0]) ? " (level: " : "",
2584                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2585                        (card->info.mcl_level[0]) ? ")" : "",
2586                        qeth_get_cardname_short(card));
2587 }
2588
2589 void qeth_print_status_message(struct qeth_card *card)
2590 {
2591         switch (card->info.type) {
2592         case QETH_CARD_TYPE_OSD:
2593         case QETH_CARD_TYPE_OSM:
2594         case QETH_CARD_TYPE_OSX:
2595                 /* VM will use a non-zero first character
2596                  * to indicate a HiperSockets like reporting
2597                  * of the level OSA sets the first character to zero
2598                  * */
2599                 if (!card->info.mcl_level[0]) {
2600                         sprintf(card->info.mcl_level, "%02x%02x",
2601                                 card->info.mcl_level[2],
2602                                 card->info.mcl_level[3]);
2603
2604                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2605                         break;
2606                 }
2607                 /* fallthrough */
2608         case QETH_CARD_TYPE_IQD:
2609                 if ((card->info.guestlan) ||
2610                     (card->info.mcl_level[0] & 0x80)) {
2611                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2612                                 card->info.mcl_level[0]];
2613                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2614                                 card->info.mcl_level[1]];
2615                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2616                                 card->info.mcl_level[2]];
2617                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2618                                 card->info.mcl_level[3]];
2619                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2620                 }
2621                 break;
2622         default:
2623                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2624         }
2625         if (card->info.portname_required)
2626                 qeth_print_status_with_portname(card);
2627         else
2628                 qeth_print_status_no_portname(card);
2629 }
2630 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2631
2632 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2633 {
2634         struct qeth_buffer_pool_entry *entry;
2635
2636         QETH_CARD_TEXT(card, 5, "inwrklst");
2637
2638         list_for_each_entry(entry,
2639                             &card->qdio.init_pool.entry_list, init_list) {
2640                 qeth_put_buffer_pool_entry(card, entry);
2641         }
2642 }
2643
2644 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2645                 struct qeth_card *card)
2646 {
2647         struct list_head *plh;
2648         struct qeth_buffer_pool_entry *entry;
2649         int i, free;
2650         struct page *page;
2651
2652         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2653                 return NULL;
2654
2655         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2656                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2657                 free = 1;
2658                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2659                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2660                                 free = 0;
2661                                 break;
2662                         }
2663                 }
2664                 if (free) {
2665                         list_del_init(&entry->list);
2666                         return entry;
2667                 }
2668         }
2669
2670         /* no free buffer in pool so take first one and swap pages */
2671         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2672                         struct qeth_buffer_pool_entry, list);
2673         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2674                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2675                         page = alloc_page(GFP_ATOMIC);
2676                         if (!page) {
2677                                 return NULL;
2678                         } else {
2679                                 free_page((unsigned long)entry->elements[i]);
2680                                 entry->elements[i] = page_address(page);
2681                                 if (card->options.performance_stats)
2682                                         card->perf_stats.sg_alloc_page_rx++;
2683                         }
2684                 }
2685         }
2686         list_del_init(&entry->list);
2687         return entry;
2688 }
2689
2690 static int qeth_init_input_buffer(struct qeth_card *card,
2691                 struct qeth_qdio_buffer *buf)
2692 {
2693         struct qeth_buffer_pool_entry *pool_entry;
2694         int i;
2695
2696         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2697                 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2698                 if (!buf->rx_skb)
2699                         return 1;
2700         }
2701
2702         pool_entry = qeth_find_free_buffer_pool_entry(card);
2703         if (!pool_entry)
2704                 return 1;
2705
2706         /*
2707          * since the buffer is accessed only from the input_tasklet
2708          * there shouldn't be a need to synchronize; also, since we use
2709          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2710          * buffers
2711          */
2712
2713         buf->pool_entry = pool_entry;
2714         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2715                 buf->buffer->element[i].length = PAGE_SIZE;
2716                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2717                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2718                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2719                 else
2720                         buf->buffer->element[i].eflags = 0;
2721                 buf->buffer->element[i].sflags = 0;
2722         }
2723         return 0;
2724 }
2725
2726 int qeth_init_qdio_queues(struct qeth_card *card)
2727 {
2728         int i, j;
2729         int rc;
2730
2731         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2732
2733         /* inbound queue */
2734         memset(card->qdio.in_q->qdio_bufs, 0,
2735                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2736         qeth_initialize_working_pool_list(card);
2737         /*give only as many buffers to hardware as we have buffer pool entries*/
2738         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2739                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2740         card->qdio.in_q->next_buf_to_init =
2741                 card->qdio.in_buf_pool.buf_count - 1;
2742         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2743                      card->qdio.in_buf_pool.buf_count - 1);
2744         if (rc) {
2745                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2746                 return rc;
2747         }
2748
2749         /* completion */
2750         rc = qeth_cq_init(card);
2751         if (rc) {
2752                 return rc;
2753         }
2754
2755         /* outbound queue */
2756         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2757                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2758                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2759                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2760                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2761                                         card->qdio.out_qs[i]->bufs[j],
2762                                         QETH_QDIO_BUF_EMPTY);
2763                 }
2764                 card->qdio.out_qs[i]->card = card;
2765                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2766                 card->qdio.out_qs[i]->do_pack = 0;
2767                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2768                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2769                 atomic_set(&card->qdio.out_qs[i]->state,
2770                            QETH_OUT_Q_UNLOCKED);
2771         }
2772         return 0;
2773 }
2774 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2775
2776 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2777 {
2778         switch (link_type) {
2779         case QETH_LINK_TYPE_HSTR:
2780                 return 2;
2781         default:
2782                 return 1;
2783         }
2784 }
2785
2786 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2787                 struct qeth_ipa_cmd *cmd, __u8 command,
2788                 enum qeth_prot_versions prot)
2789 {
2790         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2791         cmd->hdr.command = command;
2792         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2793         cmd->hdr.seqno = card->seqno.ipa;
2794         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2795         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2796         if (card->options.layer2)
2797                 cmd->hdr.prim_version_no = 2;
2798         else
2799                 cmd->hdr.prim_version_no = 1;
2800         cmd->hdr.param_count = 1;
2801         cmd->hdr.prot_version = prot;
2802         cmd->hdr.ipa_supported = 0;
2803         cmd->hdr.ipa_enabled = 0;
2804 }
2805
2806 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2807                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2808 {
2809         struct qeth_cmd_buffer *iob;
2810         struct qeth_ipa_cmd *cmd;
2811
2812         iob = qeth_wait_for_buffer(&card->write);
2813         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2814         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2815
2816         return iob;
2817 }
2818 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2819
2820 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2821                 char prot_type)
2822 {
2823         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2824         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2825         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2826                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2827 }
2828 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2829
2830 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2831                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2832                         unsigned long),
2833                 void *reply_param)
2834 {
2835         int rc;
2836         char prot_type;
2837
2838         QETH_CARD_TEXT(card, 4, "sendipa");
2839
2840         if (card->options.layer2)
2841                 if (card->info.type == QETH_CARD_TYPE_OSN)
2842                         prot_type = QETH_PROT_OSN2;
2843                 else
2844                         prot_type = QETH_PROT_LAYER2;
2845         else
2846                 prot_type = QETH_PROT_TCPIP;
2847         qeth_prepare_ipa_cmd(card, iob, prot_type);
2848         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2849                                                 iob, reply_cb, reply_param);
2850         if (rc == -ETIME) {
2851                 qeth_clear_ipacmd_list(card);
2852                 qeth_schedule_recovery(card);
2853         }
2854         return rc;
2855 }
2856 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2857
2858 int qeth_send_startlan(struct qeth_card *card)
2859 {
2860         int rc;
2861         struct qeth_cmd_buffer *iob;
2862
2863         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2864
2865         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2866         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2867         return rc;
2868 }
2869 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2870
2871 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2872                 struct qeth_reply *reply, unsigned long data)
2873 {
2874         struct qeth_ipa_cmd *cmd;
2875
2876         QETH_CARD_TEXT(card, 4, "defadpcb");
2877
2878         cmd = (struct qeth_ipa_cmd *) data;
2879         if (cmd->hdr.return_code == 0)
2880                 cmd->hdr.return_code =
2881                         cmd->data.setadapterparms.hdr.return_code;
2882         return 0;
2883 }
2884 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2885
2886 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2887                 struct qeth_reply *reply, unsigned long data)
2888 {
2889         struct qeth_ipa_cmd *cmd;
2890
2891         QETH_CARD_TEXT(card, 3, "quyadpcb");
2892
2893         cmd = (struct qeth_ipa_cmd *) data;
2894         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2895                 card->info.link_type =
2896                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2897                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2898         }
2899         card->options.adp.supported_funcs =
2900                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2901         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2902 }
2903
2904 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2905                 __u32 command, __u32 cmdlen)
2906 {
2907         struct qeth_cmd_buffer *iob;
2908         struct qeth_ipa_cmd *cmd;
2909
2910         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2911                                      QETH_PROT_IPV4);
2912         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2913         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2914         cmd->data.setadapterparms.hdr.command_code = command;
2915         cmd->data.setadapterparms.hdr.used_total = 1;
2916         cmd->data.setadapterparms.hdr.seq_no = 1;
2917
2918         return iob;
2919 }
2920 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2921
2922 int qeth_query_setadapterparms(struct qeth_card *card)
2923 {
2924         int rc;
2925         struct qeth_cmd_buffer *iob;
2926
2927         QETH_CARD_TEXT(card, 3, "queryadp");
2928         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2929                                    sizeof(struct qeth_ipacmd_setadpparms));
2930         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2931         return rc;
2932 }
2933 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2934
2935 static int qeth_query_ipassists_cb(struct qeth_card *card,
2936                 struct qeth_reply *reply, unsigned long data)
2937 {
2938         struct qeth_ipa_cmd *cmd;
2939
2940         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2941
2942         cmd = (struct qeth_ipa_cmd *) data;
2943
2944         switch (cmd->hdr.return_code) {
2945         case IPA_RC_NOTSUPP:
2946         case IPA_RC_L2_UNSUPPORTED_CMD:
2947                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
2948                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2949                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2950                 return -0;
2951         default:
2952                 if (cmd->hdr.return_code) {
2953                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
2954                                                 "rc=%d\n",
2955                                                 dev_name(&card->gdev->dev),
2956                                                 cmd->hdr.return_code);
2957                         return 0;
2958                 }
2959         }
2960
2961         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2962                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2963                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2964         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2965                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2966                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2967         } else
2968                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
2969                                         "\n", dev_name(&card->gdev->dev));
2970         return 0;
2971 }
2972
2973 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2974 {
2975         int rc;
2976         struct qeth_cmd_buffer *iob;
2977
2978         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2979         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2980         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2981         return rc;
2982 }
2983 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2984
2985 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2986                 struct qeth_reply *reply, unsigned long data)
2987 {
2988         struct qeth_ipa_cmd *cmd;
2989         __u16 rc;
2990
2991         cmd = (struct qeth_ipa_cmd *)data;
2992         rc = cmd->hdr.return_code;
2993         if (rc)
2994                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2995         else
2996                 card->info.diagass_support = cmd->data.diagass.ext;
2997         return 0;
2998 }
2999
3000 static int qeth_query_setdiagass(struct qeth_card *card)
3001 {
3002         struct qeth_cmd_buffer *iob;
3003         struct qeth_ipa_cmd    *cmd;
3004
3005         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3006         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3007         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3008         cmd->data.diagass.subcmd_len = 16;
3009         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3010         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3011 }
3012
3013 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3014 {
3015         unsigned long info = get_zeroed_page(GFP_KERNEL);
3016         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3017         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3018         struct ccw_dev_id ccwid;
3019         int level;
3020
3021         tid->chpid = card->info.chpid;
3022         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3023         tid->ssid = ccwid.ssid;
3024         tid->devno = ccwid.devno;
3025         if (!info)
3026                 return;
3027         level = stsi(NULL, 0, 0, 0);
3028         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3029                 tid->lparnr = info222->lpar_number;
3030         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3031                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3032                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3033         }
3034         free_page(info);
3035         return;
3036 }
3037
3038 static int qeth_hw_trap_cb(struct qeth_card *card,
3039                 struct qeth_reply *reply, unsigned long data)
3040 {
3041         struct qeth_ipa_cmd *cmd;
3042         __u16 rc;
3043
3044         cmd = (struct qeth_ipa_cmd *)data;
3045         rc = cmd->hdr.return_code;
3046         if (rc)
3047                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3048         return 0;
3049 }
3050
3051 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3052 {
3053         struct qeth_cmd_buffer *iob;
3054         struct qeth_ipa_cmd *cmd;
3055
3056         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3057         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3058         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3059         cmd->data.diagass.subcmd_len = 80;
3060         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3061         cmd->data.diagass.type = 1;
3062         cmd->data.diagass.action = action;
3063         switch (action) {
3064         case QETH_DIAGS_TRAP_ARM:
3065                 cmd->data.diagass.options = 0x0003;
3066                 cmd->data.diagass.ext = 0x00010000 +
3067                         sizeof(struct qeth_trap_id);
3068                 qeth_get_trap_id(card,
3069                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3070                 break;
3071         case QETH_DIAGS_TRAP_DISARM:
3072                 cmd->data.diagass.options = 0x0001;
3073                 break;
3074         case QETH_DIAGS_TRAP_CAPTURE:
3075                 break;
3076         }
3077         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3078 }
3079 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3080
3081 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3082                 unsigned int qdio_error, const char *dbftext)
3083 {
3084         if (qdio_error) {
3085                 QETH_CARD_TEXT(card, 2, dbftext);
3086                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3087                                buf->element[15].sflags);
3088                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3089                                buf->element[14].sflags);
3090                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3091                 if ((buf->element[15].sflags) == 0x12) {
3092                         card->stats.rx_dropped++;
3093                         return 0;
3094                 } else
3095                         return 1;
3096         }
3097         return 0;
3098 }
3099 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3100
3101 void qeth_buffer_reclaim_work(struct work_struct *work)
3102 {
3103         struct qeth_card *card = container_of(work, struct qeth_card,
3104                 buffer_reclaim_work.work);
3105
3106         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3107         qeth_queue_input_buffer(card, card->reclaim_index);
3108 }
3109
3110 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3111 {
3112         struct qeth_qdio_q *queue = card->qdio.in_q;
3113         struct list_head *lh;
3114         int count;
3115         int i;
3116         int rc;
3117         int newcount = 0;
3118
3119         count = (index < queue->next_buf_to_init)?
3120                 card->qdio.in_buf_pool.buf_count -
3121                 (queue->next_buf_to_init - index) :
3122                 card->qdio.in_buf_pool.buf_count -
3123                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3124         /* only requeue at a certain threshold to avoid SIGAs */
3125         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3126                 for (i = queue->next_buf_to_init;
3127                      i < queue->next_buf_to_init + count; ++i) {
3128                         if (qeth_init_input_buffer(card,
3129                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3130                                 break;
3131                         } else {
3132                                 newcount++;
3133                         }
3134                 }
3135
3136                 if (newcount < count) {
3137                         /* we are in memory shortage so we switch back to
3138                            traditional skb allocation and drop packages */
3139                         atomic_set(&card->force_alloc_skb, 3);
3140                         count = newcount;
3141                 } else {
3142                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3143                 }
3144
3145                 if (!count) {
3146                         i = 0;
3147                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3148                                 i++;
3149                         if (i == card->qdio.in_buf_pool.buf_count) {
3150                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3151                                 card->reclaim_index = index;
3152                                 schedule_delayed_work(
3153                                         &card->buffer_reclaim_work,
3154                                         QETH_RECLAIM_WORK_TIME);
3155                         }
3156                         return;
3157                 }
3158
3159                 /*
3160                  * according to old code it should be avoided to requeue all
3161                  * 128 buffers in order to benefit from PCI avoidance.
3162                  * this function keeps at least one buffer (the buffer at
3163                  * 'index') un-requeued -> this buffer is the first buffer that
3164                  * will be requeued the next time
3165                  */
3166                 if (card->options.performance_stats) {
3167                         card->perf_stats.inbound_do_qdio_cnt++;
3168                         card->perf_stats.inbound_do_qdio_start_time =
3169                                 qeth_get_micros();
3170                 }
3171                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3172                              queue->next_buf_to_init, count);
3173                 if (card->options.performance_stats)
3174                         card->perf_stats.inbound_do_qdio_time +=
3175                                 qeth_get_micros() -
3176                                 card->perf_stats.inbound_do_qdio_start_time;
3177                 if (rc) {
3178                         QETH_CARD_TEXT(card, 2, "qinberr");
3179                 }
3180                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3181                                           QDIO_MAX_BUFFERS_PER_Q;
3182         }
3183 }
3184 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3185
3186 static int qeth_handle_send_error(struct qeth_card *card,
3187                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3188 {
3189         int sbalf15 = buffer->buffer->element[15].sflags;
3190
3191         QETH_CARD_TEXT(card, 6, "hdsnderr");
3192         if (card->info.type == QETH_CARD_TYPE_IQD) {
3193                 if (sbalf15 == 0) {
3194                         qdio_err = 0;
3195                 } else {
3196                         qdio_err = 1;
3197                 }
3198         }
3199         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3200
3201         if (!qdio_err)
3202                 return QETH_SEND_ERROR_NONE;
3203
3204         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3205                 return QETH_SEND_ERROR_RETRY;
3206
3207         QETH_CARD_TEXT(card, 1, "lnkfail");
3208         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3209                        (u16)qdio_err, (u8)sbalf15);
3210         return QETH_SEND_ERROR_LINK_FAILURE;
3211 }
3212
3213 /*
3214  * Switched to packing state if the number of used buffers on a queue
3215  * reaches a certain limit.
3216  */
3217 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3218 {
3219         if (!queue->do_pack) {
3220                 if (atomic_read(&queue->used_buffers)
3221                     >= QETH_HIGH_WATERMARK_PACK){
3222                         /* switch non-PACKING -> PACKING */
3223                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3224                         if (queue->card->options.performance_stats)
3225                                 queue->card->perf_stats.sc_dp_p++;
3226                         queue->do_pack = 1;
3227                 }
3228         }
3229 }
3230
3231 /*
3232  * Switches from packing to non-packing mode. If there is a packing
3233  * buffer on the queue this buffer will be prepared to be flushed.
3234  * In that case 1 is returned to inform the caller. If no buffer
3235  * has to be flushed, zero is returned.
3236  */
3237 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3238 {
3239         struct qeth_qdio_out_buffer *buffer;
3240         int flush_count = 0;
3241
3242         if (queue->do_pack) {
3243                 if (atomic_read(&queue->used_buffers)
3244                     <= QETH_LOW_WATERMARK_PACK) {
3245                         /* switch PACKING -> non-PACKING */
3246                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3247                         if (queue->card->options.performance_stats)
3248                                 queue->card->perf_stats.sc_p_dp++;
3249                         queue->do_pack = 0;
3250                         /* flush packing buffers */
3251                         buffer = queue->bufs[queue->next_buf_to_fill];
3252                         if ((atomic_read(&buffer->state) ==
3253                                                 QETH_QDIO_BUF_EMPTY) &&
3254                             (buffer->next_element_to_fill > 0)) {
3255                                 atomic_set(&buffer->state,
3256                                            QETH_QDIO_BUF_PRIMED);
3257                                 flush_count++;
3258                                 queue->next_buf_to_fill =
3259                                         (queue->next_buf_to_fill + 1) %
3260                                         QDIO_MAX_BUFFERS_PER_Q;
3261                         }
3262                 }
3263         }
3264         return flush_count;
3265 }
3266
3267
3268 /*
3269  * Called to flush a packing buffer if no more pci flags are on the queue.
3270  * Checks if there is a packing buffer and prepares it to be flushed.
3271  * In that case returns 1, otherwise zero.
3272  */
3273 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3274 {
3275         struct qeth_qdio_out_buffer *buffer;
3276
3277         buffer = queue->bufs[queue->next_buf_to_fill];
3278         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3279            (buffer->next_element_to_fill > 0)) {
3280                 /* it's a packing buffer */
3281                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3282                 queue->next_buf_to_fill =
3283                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3284                 return 1;
3285         }
3286         return 0;
3287 }
3288
3289 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3290                                int count)
3291 {
3292         struct qeth_qdio_out_buffer *buf;
3293         int rc;
3294         int i;
3295         unsigned int qdio_flags;
3296
3297         for (i = index; i < index + count; ++i) {
3298                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3299                 buf = queue->bufs[bidx];
3300                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3301                                 SBAL_EFLAGS_LAST_ENTRY;
3302
3303                 if (queue->bufstates)
3304                         queue->bufstates[bidx].user = buf;
3305
3306                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3307                         continue;
3308
3309                 if (!queue->do_pack) {
3310                         if ((atomic_read(&queue->used_buffers) >=
3311                                 (QETH_HIGH_WATERMARK_PACK -
3312                                  QETH_WATERMARK_PACK_FUZZ)) &&
3313                             !atomic_read(&queue->set_pci_flags_count)) {
3314                                 /* it's likely that we'll go to packing
3315                                  * mode soon */
3316                                 atomic_inc(&queue->set_pci_flags_count);
3317                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3318                         }
3319                 } else {
3320                         if (!atomic_read(&queue->set_pci_flags_count)) {
3321                                 /*
3322                                  * there's no outstanding PCI any more, so we
3323                                  * have to request a PCI to be sure the the PCI
3324                                  * will wake at some time in the future then we
3325                                  * can flush packed buffers that might still be
3326                                  * hanging around, which can happen if no
3327                                  * further send was requested by the stack
3328                                  */
3329                                 atomic_inc(&queue->set_pci_flags_count);
3330                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3331                         }
3332                 }
3333         }
3334
3335         queue->card->dev->trans_start = jiffies;
3336         if (queue->card->options.performance_stats) {
3337                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3338                 queue->card->perf_stats.outbound_do_qdio_start_time =
3339                         qeth_get_micros();
3340         }
3341         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3342         if (atomic_read(&queue->set_pci_flags_count))
3343                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3344         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3345                      queue->queue_no, index, count);
3346         if (queue->card->options.performance_stats)
3347                 queue->card->perf_stats.outbound_do_qdio_time +=
3348                         qeth_get_micros() -
3349                         queue->card->perf_stats.outbound_do_qdio_start_time;
3350         atomic_add(count, &queue->used_buffers);
3351         if (rc) {
3352                 queue->card->stats.tx_errors += count;
3353                 /* ignore temporary SIGA errors without busy condition */
3354                 if (rc == -ENOBUFS)
3355                         return;
3356                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3357                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3358                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3359                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3360                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3361
3362                 /* this must not happen under normal circumstances. if it
3363                  * happens something is really wrong -> recover */
3364                 qeth_schedule_recovery(queue->card);
3365                 return;
3366         }
3367         if (queue->card->options.performance_stats)
3368                 queue->card->perf_stats.bufs_sent += count;
3369 }
3370
3371 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3372 {
3373         int index;
3374         int flush_cnt = 0;
3375         int q_was_packing = 0;
3376
3377         /*
3378          * check if weed have to switch to non-packing mode or if
3379          * we have to get a pci flag out on the queue
3380          */
3381         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3382             !atomic_read(&queue->set_pci_flags_count)) {
3383                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3384                                 QETH_OUT_Q_UNLOCKED) {
3385                         /*
3386                          * If we get in here, there was no action in
3387                          * do_send_packet. So, we check if there is a
3388                          * packing buffer to be flushed here.
3389                          */
3390                         netif_stop_queue(queue->card->dev);
3391                         index = queue->next_buf_to_fill;
3392                         q_was_packing = queue->do_pack;
3393                         /* queue->do_pack may change */
3394                         barrier();
3395                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3396                         if (!flush_cnt &&
3397                             !atomic_read(&queue->set_pci_flags_count))
3398                                 flush_cnt +=
3399                                         qeth_flush_buffers_on_no_pci(queue);
3400                         if (queue->card->options.performance_stats &&
3401                             q_was_packing)
3402                                 queue->card->perf_stats.bufs_sent_pack +=
3403                                         flush_cnt;
3404                         if (flush_cnt)
3405                                 qeth_flush_buffers(queue, index, flush_cnt);
3406                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3407                 }
3408         }
3409 }
3410
3411 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3412                 unsigned long card_ptr)
3413 {
3414         struct qeth_card *card = (struct qeth_card *)card_ptr;
3415
3416         if (card->dev && (card->dev->flags & IFF_UP))
3417                 napi_schedule(&card->napi);
3418 }
3419 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3420
3421 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3422 {
3423         int rc;
3424
3425         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3426                 rc = -1;
3427                 goto out;
3428         } else {
3429                 if (card->options.cq == cq) {
3430                         rc = 0;
3431                         goto out;
3432                 }
3433
3434                 if (card->state != CARD_STATE_DOWN &&
3435                     card->state != CARD_STATE_RECOVER) {
3436                         rc = -1;
3437                         goto out;
3438                 }
3439
3440                 qeth_free_qdio_buffers(card);
3441                 card->options.cq = cq;
3442                 rc = 0;
3443         }
3444 out:
3445         return rc;
3446
3447 }
3448 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3449
3450
3451 static void qeth_qdio_cq_handler(struct qeth_card *card,
3452                 unsigned int qdio_err,
3453                 unsigned int queue, int first_element, int count) {
3454         struct qeth_qdio_q *cq = card->qdio.c_q;
3455         int i;
3456         int rc;
3457
3458         if (!qeth_is_cq(card, queue))
3459                 goto out;
3460
3461         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3462         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3463         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3464
3465         if (qdio_err) {
3466                 netif_stop_queue(card->dev);
3467                 qeth_schedule_recovery(card);
3468                 goto out;
3469         }
3470
3471         if (card->options.performance_stats) {
3472                 card->perf_stats.cq_cnt++;
3473                 card->perf_stats.cq_start_time = qeth_get_micros();
3474         }
3475
3476         for (i = first_element; i < first_element + count; ++i) {
3477                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3478                 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3479                 int e;
3480
3481                 e = 0;
3482                 while (buffer->element[e].addr) {
3483                         unsigned long phys_aob_addr;
3484
3485                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3486                         qeth_qdio_handle_aob(card, phys_aob_addr);
3487                         buffer->element[e].addr = NULL;
3488                         buffer->element[e].eflags = 0;
3489                         buffer->element[e].sflags = 0;
3490                         buffer->element[e].length = 0;
3491
3492                         ++e;
3493                 }
3494
3495                 buffer->element[15].eflags = 0;
3496                 buffer->element[15].sflags = 0;
3497         }
3498         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3499                     card->qdio.c_q->next_buf_to_init,
3500                     count);
3501         if (rc) {
3502                 dev_warn(&card->gdev->dev,
3503                         "QDIO reported an error, rc=%i\n", rc);
3504                 QETH_CARD_TEXT(card, 2, "qcqherr");
3505         }
3506         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3507                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3508
3509         netif_wake_queue(card->dev);
3510
3511         if (card->options.performance_stats) {
3512                 int delta_t = qeth_get_micros();
3513                 delta_t -= card->perf_stats.cq_start_time;
3514                 card->perf_stats.cq_time += delta_t;
3515         }
3516 out:
3517         return;
3518 }
3519
3520 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3521                 unsigned int queue, int first_elem, int count,
3522                 unsigned long card_ptr)
3523 {
3524         struct qeth_card *card = (struct qeth_card *)card_ptr;
3525
3526         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3527         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3528
3529         if (qeth_is_cq(card, queue))
3530                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3531         else if (qdio_err)
3532                 qeth_schedule_recovery(card);
3533
3534
3535 }
3536 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3537
3538 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3539                 unsigned int qdio_error, int __queue, int first_element,
3540                 int count, unsigned long card_ptr)
3541 {
3542         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3543         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3544         struct qeth_qdio_out_buffer *buffer;
3545         int i;
3546
3547         QETH_CARD_TEXT(card, 6, "qdouhdl");
3548         if (qdio_error & QDIO_ERROR_FATAL) {
3549                 QETH_CARD_TEXT(card, 2, "achkcond");
3550                 netif_stop_queue(card->dev);
3551                 qeth_schedule_recovery(card);
3552                 return;
3553         }
3554         if (card->options.performance_stats) {
3555                 card->perf_stats.outbound_handler_cnt++;
3556                 card->perf_stats.outbound_handler_start_time =
3557                         qeth_get_micros();
3558         }
3559         for (i = first_element; i < (first_element + count); ++i) {
3560                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3561                 buffer = queue->bufs[bidx];
3562                 qeth_handle_send_error(card, buffer, qdio_error);
3563
3564                 if (queue->bufstates &&
3565                     (queue->bufstates[bidx].flags &
3566                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3567                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3568
3569                         if (atomic_cmpxchg(&buffer->state,
3570                                            QETH_QDIO_BUF_PRIMED,
3571                                            QETH_QDIO_BUF_PENDING) ==
3572                                 QETH_QDIO_BUF_PRIMED) {
3573                                 qeth_notify_skbs(queue, buffer,
3574                                                  TX_NOTIFY_PENDING);
3575                         }
3576                         buffer->aob = queue->bufstates[bidx].aob;
3577                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3578                         QETH_CARD_TEXT(queue->card, 5, "aob");
3579                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3580                                         virt_to_phys(buffer->aob));
3581                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3582                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3583                                 qeth_schedule_recovery(card);
3584                         }
3585                 } else {
3586                         if (card->options.cq == QETH_CQ_ENABLED) {
3587                                 enum iucv_tx_notify n;
3588
3589                                 n = qeth_compute_cq_notification(
3590                                         buffer->buffer->element[15].sflags, 0);
3591                                 qeth_notify_skbs(queue, buffer, n);
3592                         }
3593
3594                         qeth_clear_output_buffer(queue, buffer,
3595                                                 QETH_QDIO_BUF_EMPTY);
3596                 }
3597                 qeth_cleanup_handled_pending(queue, bidx, 0);
3598         }
3599         atomic_sub(count, &queue->used_buffers);
3600         /* check if we need to do something on this outbound queue */
3601         if (card->info.type != QETH_CARD_TYPE_IQD)
3602                 qeth_check_outbound_queue(queue);
3603
3604         netif_wake_queue(queue->card->dev);
3605         if (card->options.performance_stats)
3606                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3607                         card->perf_stats.outbound_handler_start_time;
3608 }
3609 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3610
3611 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3612                         int ipv, int cast_type)
3613 {
3614         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3615                      card->info.type == QETH_CARD_TYPE_OSX))
3616                 return card->qdio.default_out_queue;
3617         switch (card->qdio.no_out_queues) {
3618         case 4:
3619                 if (cast_type && card->info.is_multicast_different)
3620                         return card->info.is_multicast_different &
3621                                 (card->qdio.no_out_queues - 1);
3622                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3623                         const u8 tos = ip_hdr(skb)->tos;
3624
3625                         if (card->qdio.do_prio_queueing ==
3626                                 QETH_PRIO_Q_ING_TOS) {
3627                                 if (tos & IP_TOS_NOTIMPORTANT)
3628                                         return 3;
3629                                 if (tos & IP_TOS_HIGHRELIABILITY)
3630                                         return 2;
3631                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3632                                         return 1;
3633                                 if (tos & IP_TOS_LOWDELAY)
3634                                         return 0;
3635                         }
3636                         if (card->qdio.do_prio_queueing ==
3637                                 QETH_PRIO_Q_ING_PREC)
3638                                 return 3 - (tos >> 6);
3639                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3640                         /* TODO: IPv6!!! */
3641                 }
3642                 return card->qdio.default_out_queue;
3643         case 1: /* fallthrough for single-out-queue 1920-device */
3644         default:
3645                 return card->qdio.default_out_queue;
3646         }
3647 }
3648 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3649
3650 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3651                      struct sk_buff *skb, int elems)
3652 {
3653         int dlen = skb->len - skb->data_len;
3654         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3655                 PFN_DOWN((unsigned long)skb->data);
3656
3657         elements_needed += skb_shinfo(skb)->nr_frags;
3658         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3659                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3660                         "(Number=%d / Length=%d). Discarded.\n",
3661                         (elements_needed+elems), skb->len);
3662                 return 0;
3663         }
3664         return elements_needed;
3665 }
3666 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3667
3668 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3669 {
3670         int hroom, inpage, rest;
3671
3672         if (((unsigned long)skb->data & PAGE_MASK) !=
3673             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3674                 hroom = skb_headroom(skb);
3675                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3676                 rest = len - inpage;
3677                 if (rest > hroom)
3678                         return 1;
3679                 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3680                 skb->data -= rest;
3681                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3682         }
3683         return 0;
3684 }
3685 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3686
3687 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3688         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3689         int offset)
3690 {
3691         int length = skb->len - skb->data_len;
3692         int length_here;
3693         int element;
3694         char *data;
3695         int first_lap, cnt;
3696         struct skb_frag_struct *frag;
3697
3698         element = *next_element_to_fill;
3699         data = skb->data;
3700         first_lap = (is_tso == 0 ? 1 : 0);
3701
3702         if (offset >= 0) {
3703                 data = skb->data + offset;
3704                 length -= offset;
3705                 first_lap = 0;
3706         }
3707
3708         while (length > 0) {
3709                 /* length_here is the remaining amount of data in this page */
3710                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3711                 if (length < length_here)
3712                         length_here = length;
3713
3714                 buffer->element[element].addr = data;
3715                 buffer->element[element].length = length_here;
3716                 length -= length_here;
3717                 if (!length) {
3718                         if (first_lap)
3719                                 if (skb_shinfo(skb)->nr_frags)
3720                                         buffer->element[element].eflags =
3721                                                 SBAL_EFLAGS_FIRST_FRAG;
3722                                 else
3723                                         buffer->element[element].eflags = 0;
3724                         else
3725                                 buffer->element[element].eflags =
3726                                     SBAL_EFLAGS_MIDDLE_FRAG;
3727                 } else {
3728                         if (first_lap)
3729                                 buffer->element[element].eflags =
3730                                     SBAL_EFLAGS_FIRST_FRAG;
3731                         else
3732                                 buffer->element[element].eflags =
3733                                     SBAL_EFLAGS_MIDDLE_FRAG;
3734                 }
3735                 data += length_here;
3736                 element++;
3737                 first_lap = 0;
3738         }
3739
3740         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3741                 frag = &skb_shinfo(skb)->frags[cnt];
3742                 buffer->element[element].addr = (char *)
3743                         page_to_phys(skb_frag_page(frag))
3744                         + frag->page_offset;
3745                 buffer->element[element].length = frag->size;
3746                 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3747                 element++;
3748         }
3749
3750         if (buffer->element[element - 1].eflags)
3751                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3752         *next_element_to_fill = element;
3753 }
3754
3755 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3756                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3757                 struct qeth_hdr *hdr, int offset, int hd_len)
3758 {
3759         struct qdio_buffer *buffer;
3760         int flush_cnt = 0, hdr_len, large_send = 0;
3761
3762         buffer = buf->buffer;
3763         atomic_inc(&skb->users);
3764         skb_queue_tail(&buf->skb_list, skb);
3765
3766         /*check first on TSO ....*/
3767         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3768                 int element = buf->next_element_to_fill;
3769
3770                 hdr_len = sizeof(struct qeth_hdr_tso) +
3771                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3772                 /*fill first buffer entry only with header information */
3773                 buffer->element[element].addr = skb->data;
3774                 buffer->element[element].length = hdr_len;
3775                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3776                 buf->next_element_to_fill++;
3777                 skb->data += hdr_len;
3778                 skb->len  -= hdr_len;
3779                 large_send = 1;
3780         }
3781
3782         if (offset >= 0) {
3783                 int element = buf->next_element_to_fill;
3784                 buffer->element[element].addr = hdr;
3785                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3786                                                         hd_len;
3787                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3788                 buf->is_header[element] = 1;
3789                 buf->next_element_to_fill++;
3790         }
3791
3792         __qeth_fill_buffer(skb, buffer, large_send,
3793                 (int *)&buf->next_element_to_fill, offset);
3794
3795         if (!queue->do_pack) {
3796                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3797                 /* set state to PRIMED -> will be flushed */
3798                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3799                 flush_cnt = 1;
3800         } else {
3801                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3802                 if (queue->card->options.performance_stats)
3803                         queue->card->perf_stats.skbs_sent_pack++;
3804                 if (buf->next_element_to_fill >=
3805                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3806                         /*
3807                          * packed buffer if full -> set state PRIMED
3808                          * -> will be flushed
3809                          */
3810                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3811                         flush_cnt = 1;
3812                 }
3813         }
3814         return flush_cnt;
3815 }
3816
3817 int qeth_do_send_packet_fast(struct qeth_card *card,
3818                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3819                 struct qeth_hdr *hdr, int elements_needed,
3820                 int offset, int hd_len)
3821 {
3822         struct qeth_qdio_out_buffer *buffer;
3823         int index;
3824
3825         /* spin until we get the queue ... */
3826         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3827                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3828         /* ... now we've got the queue */
3829         index = queue->next_buf_to_fill;
3830         buffer = queue->bufs[queue->next_buf_to_fill];
3831         /*
3832          * check if buffer is empty to make sure that we do not 'overtake'
3833          * ourselves and try to fill a buffer that is already primed
3834          */
3835         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3836                 goto out;
3837         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3838                                           QDIO_MAX_BUFFERS_PER_Q;
3839         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3840         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3841         qeth_flush_buffers(queue, index, 1);
3842         return 0;
3843 out:
3844         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3845         return -EBUSY;
3846 }
3847 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3848
3849 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3850                 struct sk_buff *skb, struct qeth_hdr *hdr,
3851                 int elements_needed)
3852 {
3853         struct qeth_qdio_out_buffer *buffer;
3854         int start_index;
3855         int flush_count = 0;
3856         int do_pack = 0;
3857         int tmp;
3858         int rc = 0;
3859
3860         /* spin until we get the queue ... */
3861         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3862                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3863         start_index = queue->next_buf_to_fill;
3864         buffer = queue->bufs[queue->next_buf_to_fill];
3865         /*
3866          * check if buffer is empty to make sure that we do not 'overtake'
3867          * ourselves and try to fill a buffer that is already primed
3868          */
3869         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3870                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3871                 return -EBUSY;
3872         }
3873         /* check if we need to switch packing state of this queue */
3874         qeth_switch_to_packing_if_needed(queue);
3875         if (queue->do_pack) {
3876                 do_pack = 1;
3877                 /* does packet fit in current buffer? */
3878                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3879                     buffer->next_element_to_fill) < elements_needed) {
3880                         /* ... no -> set state PRIMED */
3881                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3882                         flush_count++;
3883                         queue->next_buf_to_fill =
3884                                 (queue->next_buf_to_fill + 1) %
3885                                 QDIO_MAX_BUFFERS_PER_Q;
3886                         buffer = queue->bufs[queue->next_buf_to_fill];
3887                         /* we did a step forward, so check buffer state
3888                          * again */
3889                         if (atomic_read(&buffer->state) !=
3890                             QETH_QDIO_BUF_EMPTY) {
3891                                 qeth_flush_buffers(queue, start_index,
3892                                                            flush_count);
3893                                 atomic_set(&queue->state,
3894                                                 QETH_OUT_Q_UNLOCKED);
3895                                 return -EBUSY;
3896                         }
3897                 }
3898         }
3899         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3900         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3901                                   QDIO_MAX_BUFFERS_PER_Q;
3902         flush_count += tmp;
3903         if (flush_count)
3904                 qeth_flush_buffers(queue, start_index, flush_count);
3905         else if (!atomic_read(&queue->set_pci_flags_count))
3906                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3907         /*
3908          * queue->state will go from LOCKED -> UNLOCKED or from
3909          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3910          * (switch packing state or flush buffer to get another pci flag out).
3911          * In that case we will enter this loop
3912          */
3913         while (atomic_dec_return(&queue->state)) {
3914                 flush_count = 0;
3915                 start_index = queue->next_buf_to_fill;
3916                 /* check if we can go back to non-packing state */
3917                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3918                 /*
3919                  * check if we need to flush a packing buffer to get a pci
3920                  * flag out on the queue
3921                  */
3922                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3923                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3924                 if (flush_count)
3925                         qeth_flush_buffers(queue, start_index, flush_count);
3926         }
3927         /* at this point the queue is UNLOCKED again */
3928         if (queue->card->options.performance_stats && do_pack)
3929                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3930
3931         return rc;
3932 }
3933 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3934
3935 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3936                 struct qeth_reply *reply, unsigned long data)
3937 {
3938         struct qeth_ipa_cmd *cmd;
3939         struct qeth_ipacmd_setadpparms *setparms;
3940
3941         QETH_CARD_TEXT(card, 4, "prmadpcb");
3942
3943         cmd = (struct qeth_ipa_cmd *) data;
3944         setparms = &(cmd->data.setadapterparms);
3945
3946         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3947         if (cmd->hdr.return_code) {
3948                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3949                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3950         }
3951         card->info.promisc_mode = setparms->data.mode;
3952         return 0;
3953 }
3954
3955 void qeth_setadp_promisc_mode(struct qeth_card *card)
3956 {
3957         enum qeth_ipa_promisc_modes mode;
3958         struct net_device *dev = card->dev;
3959         struct qeth_cmd_buffer *iob;
3960         struct qeth_ipa_cmd *cmd;
3961
3962         QETH_CARD_TEXT(card, 4, "setprom");
3963
3964         if (((dev->flags & IFF_PROMISC) &&
3965              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3966             (!(dev->flags & IFF_PROMISC) &&
3967              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3968                 return;
3969         mode = SET_PROMISC_MODE_OFF;
3970         if (dev->flags & IFF_PROMISC)
3971                 mode = SET_PROMISC_MODE_ON;
3972         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3973
3974         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3975                         sizeof(struct qeth_ipacmd_setadpparms));
3976         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3977         cmd->data.setadapterparms.data.mode = mode;
3978         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3979 }
3980 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3981
3982 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3983 {
3984         struct qeth_card *card;
3985         char dbf_text[15];
3986
3987         card = dev->ml_priv;
3988
3989         QETH_CARD_TEXT(card, 4, "chgmtu");
3990         sprintf(dbf_text, "%8x", new_mtu);
3991         QETH_CARD_TEXT(card, 4, dbf_text);
3992
3993         if (new_mtu < 64)
3994                 return -EINVAL;
3995         if (new_mtu > 65535)
3996                 return -EINVAL;
3997         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3998             (!qeth_mtu_is_valid(card, new_mtu)))
3999                 return -EINVAL;
4000         dev->mtu = new_mtu;
4001         return 0;
4002 }
4003 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4004
4005 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4006 {
4007         struct qeth_card *card;
4008
4009         card = dev->ml_priv;
4010
4011         QETH_CARD_TEXT(card, 5, "getstat");
4012
4013         return &card->stats;
4014 }
4015 EXPORT_SYMBOL_GPL(qeth_get_stats);
4016
4017 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4018                 struct qeth_reply *reply, unsigned long data)
4019 {
4020         struct qeth_ipa_cmd *cmd;
4021
4022         QETH_CARD_TEXT(card, 4, "chgmaccb");
4023
4024         cmd = (struct qeth_ipa_cmd *) data;
4025         if (!card->options.layer2 ||
4026             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4027                 memcpy(card->dev->dev_addr,
4028                        &cmd->data.setadapterparms.data.change_addr.addr,
4029                        OSA_ADDR_LEN);
4030                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4031         }
4032         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4033         return 0;
4034 }
4035
4036 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4037 {
4038         int rc;
4039         struct qeth_cmd_buffer *iob;
4040         struct qeth_ipa_cmd *cmd;
4041
4042         QETH_CARD_TEXT(card, 4, "chgmac");
4043
4044         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4045                                    sizeof(struct qeth_ipacmd_setadpparms));
4046         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4047         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4048         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4049         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4050                card->dev->dev_addr, OSA_ADDR_LEN);
4051         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4052                                NULL);
4053         return rc;
4054 }
4055 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4056
4057 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4058                 struct qeth_reply *reply, unsigned long data)
4059 {
4060         struct qeth_ipa_cmd *cmd;
4061         struct qeth_set_access_ctrl *access_ctrl_req;
4062
4063         QETH_CARD_TEXT(card, 4, "setaccb");
4064
4065         cmd = (struct qeth_ipa_cmd *) data;
4066         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4067         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4068         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4069         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4070                 cmd->data.setadapterparms.hdr.return_code);
4071         switch (cmd->data.setadapterparms.hdr.return_code) {
4072         case SET_ACCESS_CTRL_RC_SUCCESS:
4073         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4074         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4075         {
4076                 card->options.isolation = access_ctrl_req->subcmd_code;
4077                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4078                         dev_info(&card->gdev->dev,
4079                             "QDIO data connection isolation is deactivated\n");
4080                 } else {
4081                         dev_info(&card->gdev->dev,
4082                             "QDIO data connection isolation is activated\n");
4083                 }
4084                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
4085                         card->gdev->dev.kobj.name,
4086                         access_ctrl_req->subcmd_code,
4087                         cmd->data.setadapterparms.hdr.return_code);
4088                 break;
4089         }
4090         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4091         {
4092                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4093                         card->gdev->dev.kobj.name,
4094                         access_ctrl_req->subcmd_code,
4095                         cmd->data.setadapterparms.hdr.return_code);
4096                 dev_err(&card->gdev->dev, "Adapter does not "
4097                         "support QDIO data connection isolation\n");
4098
4099                 /* ensure isolation mode is "none" */
4100                 card->options.isolation = ISOLATION_MODE_NONE;
4101                 break;
4102         }
4103         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4104         {
4105                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4106                         card->gdev->dev.kobj.name,
4107                         access_ctrl_req->subcmd_code,
4108                         cmd->data.setadapterparms.hdr.return_code);
4109                 dev_err(&card->gdev->dev,
4110                         "Adapter is dedicated. "
4111                         "QDIO data connection isolation not supported\n");
4112
4113                 /* ensure isolation mode is "none" */
4114                 card->options.isolation = ISOLATION_MODE_NONE;
4115                 break;
4116         }
4117         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4118         {
4119                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
4120                         card->gdev->dev.kobj.name,
4121                         access_ctrl_req->subcmd_code,
4122                         cmd->data.setadapterparms.hdr.return_code);
4123                 dev_err(&card->gdev->dev,
4124                         "TSO does not permit QDIO data connection isolation\n");
4125
4126                 /* ensure isolation mode is "none" */
4127                 card->options.isolation = ISOLATION_MODE_NONE;
4128                 break;
4129         }
4130         default:
4131         {
4132                 /* this should never happen */
4133                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
4134                         "==UNKNOWN\n",
4135                         card->gdev->dev.kobj.name,
4136                         access_ctrl_req->subcmd_code,
4137                         cmd->data.setadapterparms.hdr.return_code);
4138
4139                 /* ensure isolation mode is "none" */
4140                 card->options.isolation = ISOLATION_MODE_NONE;
4141                 break;
4142         }
4143         }
4144         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4145         return 0;
4146 }
4147
4148 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4149                 enum qeth_ipa_isolation_modes isolation)
4150 {
4151         int rc;
4152         struct qeth_cmd_buffer *iob;
4153         struct qeth_ipa_cmd *cmd;
4154         struct qeth_set_access_ctrl *access_ctrl_req;
4155
4156         QETH_CARD_TEXT(card, 4, "setacctl");
4157
4158         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4159         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4160
4161         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4162                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4163                                    sizeof(struct qeth_set_access_ctrl));
4164         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4165         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4166         access_ctrl_req->subcmd_code = isolation;
4167
4168         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4169                                NULL);
4170         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4171         return rc;
4172 }
4173
4174 int qeth_set_access_ctrl_online(struct qeth_card *card)
4175 {
4176         int rc = 0;
4177
4178         QETH_CARD_TEXT(card, 4, "setactlo");
4179
4180         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4181              card->info.type == QETH_CARD_TYPE_OSX) &&
4182              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4183                 rc = qeth_setadpparms_set_access_ctrl(card,
4184                         card->options.isolation);
4185                 if (rc) {
4186                         QETH_DBF_MESSAGE(3,
4187                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4188                                 card->gdev->dev.kobj.name,
4189                                 rc);
4190                 }
4191         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4192                 card->options.isolation = ISOLATION_MODE_NONE;
4193
4194                 dev_err(&card->gdev->dev, "Adapter does not "
4195                         "support QDIO data connection isolation\n");
4196                 rc = -EOPNOTSUPP;
4197         }
4198         return rc;
4199 }
4200 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4201
4202 void qeth_tx_timeout(struct net_device *dev)
4203 {
4204         struct qeth_card *card;
4205
4206         card = dev->ml_priv;
4207         QETH_CARD_TEXT(card, 4, "txtimeo");
4208         card->stats.tx_errors++;
4209         qeth_schedule_recovery(card);
4210 }
4211 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4212
4213 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4214 {
4215         struct qeth_card *card = dev->ml_priv;
4216         int rc = 0;
4217
4218         switch (regnum) {
4219         case MII_BMCR: /* Basic mode control register */
4220                 rc = BMCR_FULLDPLX;
4221                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4222                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4223                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4224                         rc |= BMCR_SPEED100;
4225                 break;
4226         case MII_BMSR: /* Basic mode status register */
4227                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4228                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4229                      BMSR_100BASE4;
4230                 break;
4231         case MII_PHYSID1: /* PHYS ID 1 */
4232                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4233                      dev->dev_addr[2];
4234                 rc = (rc >> 5) & 0xFFFF;
4235                 break;
4236         case MII_PHYSID2: /* PHYS ID 2 */
4237                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4238                 break;
4239         case MII_ADVERTISE: /* Advertisement control reg */
4240                 rc = ADVERTISE_ALL;
4241                 break;
4242         case MII_LPA: /* Link partner ability reg */
4243                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4244                      LPA_100BASE4 | LPA_LPACK;
4245                 break;
4246         case MII_EXPANSION: /* Expansion register */
4247                 break;
4248         case MII_DCOUNTER: /* disconnect counter */
4249                 break;
4250         case MII_FCSCOUNTER: /* false carrier counter */
4251                 break;
4252         case MII_NWAYTEST: /* N-way auto-neg test register */
4253                 break;
4254         case MII_RERRCOUNTER: /* rx error counter */
4255                 rc = card->stats.rx_errors;
4256                 break;
4257         case MII_SREVISION: /* silicon revision */
4258                 break;
4259         case MII_RESV1: /* reserved 1 */
4260                 break;
4261         case MII_LBRERROR: /* loopback, rx, bypass error */
4262                 break;
4263         case MII_PHYADDR: /* physical address */
4264                 break;
4265         case MII_RESV2: /* reserved 2 */
4266                 break;
4267         case MII_TPISTATUS: /* TPI status for 10mbps */
4268                 break;
4269         case MII_NCONFIG: /* network interface config */
4270                 break;
4271         default:
4272                 break;
4273         }
4274         return rc;
4275 }
4276 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4277
4278 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4279                 struct qeth_cmd_buffer *iob, int len,
4280                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4281                         unsigned long),
4282                 void *reply_param)
4283 {
4284         u16 s1, s2;
4285
4286         QETH_CARD_TEXT(card, 4, "sendsnmp");
4287
4288         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4289         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4290                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4291         /* adjust PDU length fields in IPA_PDU_HEADER */
4292         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4293         s2 = (u32) len;
4294         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4295         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4296         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4297         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4298         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4299                                       reply_cb, reply_param);
4300 }
4301
4302 static int qeth_snmp_command_cb(struct qeth_card *card,
4303                 struct qeth_reply *reply, unsigned long sdata)
4304 {
4305         struct qeth_ipa_cmd *cmd;
4306         struct qeth_arp_query_info *qinfo;
4307         struct qeth_snmp_cmd *snmp;
4308         unsigned char *data;
4309         __u16 data_len;
4310
4311         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4312
4313         cmd = (struct qeth_ipa_cmd *) sdata;
4314         data = (unsigned char *)((char *)cmd - reply->offset);
4315         qinfo = (struct qeth_arp_query_info *) reply->param;
4316         snmp = &cmd->data.setadapterparms.data.snmp;
4317
4318         if (cmd->hdr.return_code) {
4319                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4320                 return 0;
4321         }
4322         if (cmd->data.setadapterparms.hdr.return_code) {
4323                 cmd->hdr.return_code =
4324                         cmd->data.setadapterparms.hdr.return_code;
4325                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4326                 return 0;
4327         }
4328         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4329         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4330                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4331         else
4332                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4333
4334         /* check if there is enough room in userspace */
4335         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4336                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4337                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4338                 return 0;
4339         }
4340         QETH_CARD_TEXT_(card, 4, "snore%i",
4341                        cmd->data.setadapterparms.hdr.used_total);
4342         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4343                 cmd->data.setadapterparms.hdr.seq_no);
4344         /*copy entries to user buffer*/
4345         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4346                 memcpy(qinfo->udata + qinfo->udata_offset,
4347                        (char *)snmp,
4348                        data_len + offsetof(struct qeth_snmp_cmd, data));
4349                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4350         } else {
4351                 memcpy(qinfo->udata + qinfo->udata_offset,
4352                        (char *)&snmp->request, data_len);
4353         }
4354         qinfo->udata_offset += data_len;
4355         /* check if all replies received ... */
4356                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4357                                cmd->data.setadapterparms.hdr.used_total);
4358                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4359                                cmd->data.setadapterparms.hdr.seq_no);
4360         if (cmd->data.setadapterparms.hdr.seq_no <
4361             cmd->data.setadapterparms.hdr.used_total)
4362                 return 1;
4363         return 0;
4364 }
4365
4366 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4367 {
4368         struct qeth_cmd_buffer *iob;
4369         struct qeth_ipa_cmd *cmd;
4370         struct qeth_snmp_ureq *ureq;
4371         int req_len;
4372         struct qeth_arp_query_info qinfo = {0, };
4373         int rc = 0;
4374
4375         QETH_CARD_TEXT(card, 3, "snmpcmd");
4376
4377         if (card->info.guestlan)
4378                 return -EOPNOTSUPP;
4379
4380         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4381             (!card->options.layer2)) {
4382                 return -EOPNOTSUPP;
4383         }
4384         /* skip 4 bytes (data_len struct member) to get req_len */
4385         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4386                 return -EFAULT;
4387         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4388         if (IS_ERR(ureq)) {
4389                 QETH_CARD_TEXT(card, 2, "snmpnome");
4390                 return PTR_ERR(ureq);
4391         }
4392         qinfo.udata_len = ureq->hdr.data_len;
4393         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4394         if (!qinfo.udata) {
4395                 kfree(ureq);
4396                 return -ENOMEM;
4397         }
4398         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4399
4400         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4401                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4402         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4403         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4404         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4405                                     qeth_snmp_command_cb, (void *)&qinfo);
4406         if (rc)
4407                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4408                            QETH_CARD_IFNAME(card), rc);
4409         else {
4410                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4411                         rc = -EFAULT;
4412         }
4413
4414         kfree(ureq);
4415         kfree(qinfo.udata);
4416         return rc;
4417 }
4418 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4419
4420 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4421                 struct qeth_reply *reply, unsigned long data)
4422 {
4423         struct qeth_ipa_cmd *cmd;
4424         struct qeth_qoat_priv *priv;
4425         char *resdata;
4426         int resdatalen;
4427
4428         QETH_CARD_TEXT(card, 3, "qoatcb");
4429
4430         cmd = (struct qeth_ipa_cmd *)data;
4431         priv = (struct qeth_qoat_priv *)reply->param;
4432         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4433         resdata = (char *)data + 28;
4434
4435         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4436                 cmd->hdr.return_code = IPA_RC_FFFF;
4437                 return 0;
4438         }
4439
4440         memcpy((priv->buffer + priv->response_len), resdata,
4441                 resdatalen);
4442         priv->response_len += resdatalen;
4443
4444         if (cmd->data.setadapterparms.hdr.seq_no <
4445             cmd->data.setadapterparms.hdr.used_total)
4446                 return 1;
4447         return 0;
4448 }
4449
4450 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4451 {
4452         int rc = 0;
4453         struct qeth_cmd_buffer *iob;
4454         struct qeth_ipa_cmd *cmd;
4455         struct qeth_query_oat *oat_req;
4456         struct qeth_query_oat_data oat_data;
4457         struct qeth_qoat_priv priv;
4458         void __user *tmp;
4459
4460         QETH_CARD_TEXT(card, 3, "qoatcmd");
4461
4462         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4463                 rc = -EOPNOTSUPP;
4464                 goto out;
4465         }
4466
4467         if (copy_from_user(&oat_data, udata,
4468             sizeof(struct qeth_query_oat_data))) {
4469                         rc = -EFAULT;
4470                         goto out;
4471         }
4472
4473         priv.buffer_len = oat_data.buffer_len;
4474         priv.response_len = 0;
4475         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4476         if (!priv.buffer) {
4477                 rc = -ENOMEM;
4478                 goto out;
4479         }
4480
4481         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4482                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4483                                    sizeof(struct qeth_query_oat));
4484         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4485         oat_req = &cmd->data.setadapterparms.data.query_oat;
4486         oat_req->subcmd_code = oat_data.command;
4487
4488         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4489                                &priv);
4490         if (!rc) {
4491                 if (is_compat_task())
4492                         tmp = compat_ptr(oat_data.ptr);
4493                 else
4494                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4495
4496                 if (copy_to_user(tmp, priv.buffer,
4497                     priv.response_len)) {
4498                         rc = -EFAULT;
4499                         goto out_free;
4500                 }
4501
4502                 oat_data.response_len = priv.response_len;
4503
4504                 if (copy_to_user(udata, &oat_data,
4505                     sizeof(struct qeth_query_oat_data)))
4506                         rc = -EFAULT;
4507         } else
4508                 if (rc == IPA_RC_FFFF)
4509                         rc = -EFAULT;
4510
4511 out_free:
4512         kfree(priv.buffer);
4513 out:
4514         return rc;
4515 }
4516 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4517
4518 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4519 {
4520         switch (card->info.type) {
4521         case QETH_CARD_TYPE_IQD:
4522                 return 2;
4523         default:
4524                 return 0;
4525         }
4526 }
4527
4528 static void qeth_determine_capabilities(struct qeth_card *card)
4529 {
4530         int rc;
4531         int length;
4532         char *prcd;
4533         struct ccw_device *ddev;
4534         int ddev_offline = 0;
4535
4536         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4537         ddev = CARD_DDEV(card);
4538         if (!ddev->online) {
4539                 ddev_offline = 1;
4540                 rc = ccw_device_set_online(ddev);
4541                 if (rc) {
4542                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4543                         goto out;
4544                 }
4545         }
4546
4547         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4548         if (rc) {
4549                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4550                         dev_name(&card->gdev->dev), rc);
4551                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4552                 goto out_offline;
4553         }
4554         qeth_configure_unitaddr(card, prcd);
4555         if (ddev_offline)
4556                 qeth_configure_blkt_default(card, prcd);
4557         kfree(prcd);
4558
4559         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4560         if (rc)
4561                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4562
4563         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4564         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4565         QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4566         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4567         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4568             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4569             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4570                 dev_info(&card->gdev->dev,
4571                         "Completion Queueing supported\n");
4572         } else {
4573                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4574         }
4575
4576
4577 out_offline:
4578         if (ddev_offline == 1)
4579                 ccw_device_set_offline(ddev);
4580 out:
4581         return;
4582 }
4583
4584 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4585         struct qdio_buffer **in_sbal_ptrs,
4586         void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4587         int i;
4588
4589         if (card->options.cq == QETH_CQ_ENABLED) {
4590                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4591                              (card->qdio.no_in_queues - 1);
4592                 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4593                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4594                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4595                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4596                 }
4597
4598                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4599         }
4600 }
4601
4602 static int qeth_qdio_establish(struct qeth_card *card)
4603 {
4604         struct qdio_initialize init_data;
4605         char *qib_param_field;
4606         struct qdio_buffer **in_sbal_ptrs;
4607         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4608         struct qdio_buffer **out_sbal_ptrs;
4609         int i, j, k;
4610         int rc = 0;
4611
4612         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4613
4614         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4615                               GFP_KERNEL);
4616         if (!qib_param_field) {
4617                 rc =  -ENOMEM;
4618                 goto out_free_nothing;
4619         }
4620
4621         qeth_create_qib_param_field(card, qib_param_field);
4622         qeth_create_qib_param_field_blkt(card, qib_param_field);
4623
4624         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4625                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4626                                GFP_KERNEL);
4627         if (!in_sbal_ptrs) {
4628                 rc = -ENOMEM;
4629                 goto out_free_qib_param;
4630         }
4631         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4632                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4633                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4634         }
4635
4636         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4637                                    GFP_KERNEL);
4638         if (!queue_start_poll) {
4639                 rc = -ENOMEM;
4640                 goto out_free_in_sbals;
4641         }
4642         for (i = 0; i < card->qdio.no_in_queues; ++i)
4643                 queue_start_poll[i] = card->discipline->start_poll;
4644
4645         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4646
4647         out_sbal_ptrs =
4648                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4649                         sizeof(void *), GFP_KERNEL);
4650         if (!out_sbal_ptrs) {
4651                 rc = -ENOMEM;
4652                 goto out_free_queue_start_poll;
4653         }
4654         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4655                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4656                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4657                                 card->qdio.out_qs[i]->bufs[j]->buffer);
4658                 }
4659
4660         memset(&init_data, 0, sizeof(struct qdio_initialize));
4661         init_data.cdev                   = CARD_DDEV(card);
4662         init_data.q_format               = qeth_get_qdio_q_format(card);
4663         init_data.qib_param_field_format = 0;
4664         init_data.qib_param_field        = qib_param_field;
4665         init_data.no_input_qs            = card->qdio.no_in_queues;
4666         init_data.no_output_qs           = card->qdio.no_out_queues;
4667         init_data.input_handler          = card->discipline->input_handler;
4668         init_data.output_handler         = card->discipline->output_handler;
4669         init_data.queue_start_poll_array = queue_start_poll;
4670         init_data.int_parm               = (unsigned long) card;
4671         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
4672         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4673         init_data.output_sbal_state_array = card->qdio.out_bufstates;
4674         init_data.scan_threshold =
4675                 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
4676
4677         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4678                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4679                 rc = qdio_allocate(&init_data);
4680                 if (rc) {
4681                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4682                         goto out;
4683                 }
4684                 rc = qdio_establish(&init_data);
4685                 if (rc) {
4686                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4687                         qdio_free(CARD_DDEV(card));
4688                 }
4689         }
4690
4691         switch (card->options.cq) {
4692         case QETH_CQ_ENABLED:
4693                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4694                 break;
4695         case QETH_CQ_DISABLED:
4696                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4697                 break;
4698         default:
4699                 break;
4700         }
4701 out:
4702         kfree(out_sbal_ptrs);
4703 out_free_queue_start_poll:
4704         kfree(queue_start_poll);
4705 out_free_in_sbals:
4706         kfree(in_sbal_ptrs);
4707 out_free_qib_param:
4708         kfree(qib_param_field);
4709 out_free_nothing:
4710         return rc;
4711 }
4712
4713 static void qeth_core_free_card(struct qeth_card *card)
4714 {
4715
4716         QETH_DBF_TEXT(SETUP, 2, "freecrd");
4717         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4718         qeth_clean_channel(&card->read);
4719         qeth_clean_channel(&card->write);
4720         if (card->dev)
4721                 free_netdev(card->dev);
4722         kfree(card->ip_tbd_list);
4723         qeth_free_qdio_buffers(card);
4724         unregister_service_level(&card->qeth_service_level);
4725         kfree(card);
4726 }
4727
4728 void qeth_trace_features(struct qeth_card *card)
4729 {
4730         QETH_CARD_TEXT(card, 2, "features");
4731         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4732         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4733         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4734         QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4735         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4736         QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4737         QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4738 }
4739 EXPORT_SYMBOL_GPL(qeth_trace_features);
4740
4741 static struct ccw_device_id qeth_ids[] = {
4742         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4743                                         .driver_info = QETH_CARD_TYPE_OSD},
4744         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4745                                         .driver_info = QETH_CARD_TYPE_IQD},
4746         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4747                                         .driver_info = QETH_CARD_TYPE_OSN},
4748         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4749                                         .driver_info = QETH_CARD_TYPE_OSM},
4750         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4751                                         .driver_info = QETH_CARD_TYPE_OSX},
4752         {},
4753 };
4754 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4755
4756 static struct ccw_driver qeth_ccw_driver = {
4757         .driver = {
4758                 .owner = THIS_MODULE,
4759                 .name = "qeth",
4760         },
4761         .ids = qeth_ids,
4762         .probe = ccwgroup_probe_ccwdev,
4763         .remove = ccwgroup_remove_ccwdev,
4764 };
4765
4766 int qeth_core_hardsetup_card(struct qeth_card *card)
4767 {
4768         int retries = 0;
4769         int rc;
4770
4771         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4772         atomic_set(&card->force_alloc_skb, 0);
4773         qeth_update_from_chp_desc(card);
4774 retry:
4775         if (retries)
4776                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4777                         dev_name(&card->gdev->dev));
4778         ccw_device_set_offline(CARD_DDEV(card));
4779         ccw_device_set_offline(CARD_WDEV(card));
4780         ccw_device_set_offline(CARD_RDEV(card));
4781         rc = ccw_device_set_online(CARD_RDEV(card));
4782         if (rc)
4783                 goto retriable;
4784         rc = ccw_device_set_online(CARD_WDEV(card));
4785         if (rc)
4786                 goto retriable;
4787         rc = ccw_device_set_online(CARD_DDEV(card));
4788         if (rc)
4789                 goto retriable;
4790         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4791 retriable:
4792         if (rc == -ERESTARTSYS) {
4793                 QETH_DBF_TEXT(SETUP, 2, "break1");
4794                 return rc;
4795         } else if (rc) {
4796                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4797                 if (++retries > 3)
4798                         goto out;
4799                 else
4800                         goto retry;
4801         }
4802         qeth_determine_capabilities(card);
4803         qeth_init_tokens(card);
4804         qeth_init_func_level(card);
4805         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4806         if (rc == -ERESTARTSYS) {
4807                 QETH_DBF_TEXT(SETUP, 2, "break2");
4808                 return rc;
4809         } else if (rc) {
4810                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4811                 if (--retries < 0)
4812                         goto out;
4813                 else
4814                         goto retry;
4815         }
4816         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4817         if (rc == -ERESTARTSYS) {
4818                 QETH_DBF_TEXT(SETUP, 2, "break3");
4819                 return rc;
4820         } else if (rc) {
4821                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4822                 if (--retries < 0)
4823                         goto out;
4824                 else
4825                         goto retry;
4826         }
4827         card->read_or_write_problem = 0;
4828         rc = qeth_mpc_initialize(card);
4829         if (rc) {
4830                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4831                 goto out;
4832         }
4833
4834         card->options.ipa4.supported_funcs = 0;
4835         card->options.adp.supported_funcs = 0;
4836         card->info.diagass_support = 0;
4837         qeth_query_ipassists(card, QETH_PROT_IPV4);
4838         if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4839                 qeth_query_setadapterparms(card);
4840         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4841                 qeth_query_setdiagass(card);
4842         return 0;
4843 out:
4844         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4845                 "an error on the device\n");
4846         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4847                 dev_name(&card->gdev->dev), rc);
4848         return rc;
4849 }
4850 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4851
4852 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4853                 struct qdio_buffer_element *element,
4854                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4855 {
4856         struct page *page = virt_to_page(element->addr);
4857         if (*pskb == NULL) {
4858                 if (qethbuffer->rx_skb) {
4859                         /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4860                         *pskb = qethbuffer->rx_skb;
4861                         qethbuffer->rx_skb = NULL;
4862                 } else {
4863                         *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4864                         if (!(*pskb))
4865                                 return -ENOMEM;
4866                 }
4867
4868                 skb_reserve(*pskb, ETH_HLEN);
4869                 if (data_len <= QETH_RX_PULL_LEN) {
4870                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4871                                 data_len);
4872                 } else {
4873                         get_page(page);
4874                         memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4875                                element->addr + offset, QETH_RX_PULL_LEN);
4876                         skb_fill_page_desc(*pskb, *pfrag, page,
4877                                 offset + QETH_RX_PULL_LEN,
4878                                 data_len - QETH_RX_PULL_LEN);
4879                         (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4880                         (*pskb)->len      += data_len - QETH_RX_PULL_LEN;
4881                         (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4882                         (*pfrag)++;
4883                 }
4884         } else {
4885                 get_page(page);
4886                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4887                 (*pskb)->data_len += data_len;
4888                 (*pskb)->len      += data_len;
4889                 (*pskb)->truesize += data_len;
4890                 (*pfrag)++;
4891         }
4892
4893
4894         return 0;
4895 }
4896
4897 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4898                 struct qeth_qdio_buffer *qethbuffer,
4899                 struct qdio_buffer_element **__element, int *__offset,
4900                 struct qeth_hdr **hdr)
4901 {
4902         struct qdio_buffer_element *element = *__element;
4903         struct qdio_buffer *buffer = qethbuffer->buffer;
4904         int offset = *__offset;
4905         struct sk_buff *skb = NULL;
4906         int skb_len = 0;
4907         void *data_ptr;
4908         int data_len;
4909         int headroom = 0;
4910         int use_rx_sg = 0;
4911         int frag = 0;
4912
4913         /* qeth_hdr must not cross element boundaries */
4914         if (element->length < offset + sizeof(struct qeth_hdr)) {
4915                 if (qeth_is_last_sbale(element))
4916                         return NULL;
4917                 element++;
4918                 offset = 0;
4919                 if (element->length < sizeof(struct qeth_hdr))
4920                         return NULL;
4921         }
4922         *hdr = element->addr + offset;
4923
4924         offset += sizeof(struct qeth_hdr);
4925         switch ((*hdr)->hdr.l2.id) {
4926         case QETH_HEADER_TYPE_LAYER2:
4927                 skb_len = (*hdr)->hdr.l2.pkt_length;
4928                 break;
4929         case QETH_HEADER_TYPE_LAYER3:
4930                 skb_len = (*hdr)->hdr.l3.length;
4931                 headroom = ETH_HLEN;
4932                 break;
4933         case QETH_HEADER_TYPE_OSN:
4934                 skb_len = (*hdr)->hdr.osn.pdu_length;
4935                 headroom = sizeof(struct qeth_hdr);
4936                 break;
4937         default:
4938                 break;
4939         }
4940
4941         if (!skb_len)
4942                 return NULL;
4943
4944         if (((skb_len >= card->options.rx_sg_cb) &&
4945              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4946              (!atomic_read(&card->force_alloc_skb))) ||
4947             (card->options.cq == QETH_CQ_ENABLED)) {
4948                 use_rx_sg = 1;
4949         } else {
4950                 skb = dev_alloc_skb(skb_len + headroom);
4951                 if (!skb)
4952                         goto no_mem;
4953                 if (headroom)
4954                         skb_reserve(skb, headroom);
4955         }
4956
4957         data_ptr = element->addr + offset;
4958         while (skb_len) {
4959                 data_len = min(skb_len, (int)(element->length - offset));
4960                 if (data_len) {
4961                         if (use_rx_sg) {
4962                                 if (qeth_create_skb_frag(qethbuffer, element,
4963                                     &skb, offset, &frag, data_len))
4964                                         goto no_mem;
4965                         } else {
4966                                 memcpy(skb_put(skb, data_len), data_ptr,
4967                                         data_len);
4968                         }
4969                 }
4970                 skb_len -= data_len;
4971                 if (skb_len) {
4972                         if (qeth_is_last_sbale(element)) {
4973                                 QETH_CARD_TEXT(card, 4, "unexeob");
4974                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4975                                 dev_kfree_skb_any(skb);
4976                                 card->stats.rx_errors++;
4977                                 return NULL;
4978                         }
4979                         element++;
4980                         offset = 0;
4981                         data_ptr = element->addr;
4982                 } else {
4983                         offset += data_len;
4984                 }
4985         }
4986         *__element = element;
4987         *__offset = offset;
4988         if (use_rx_sg && card->options.performance_stats) {
4989                 card->perf_stats.sg_skbs_rx++;
4990                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4991         }
4992         return skb;
4993 no_mem:
4994         if (net_ratelimit()) {
4995                 QETH_CARD_TEXT(card, 2, "noskbmem");
4996         }
4997         card->stats.rx_dropped++;
4998         return NULL;
4999 }
5000 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5001
5002 static void qeth_unregister_dbf_views(void)
5003 {
5004         int x;
5005         for (x = 0; x < QETH_DBF_INFOS; x++) {
5006                 debug_unregister(qeth_dbf[x].id);
5007                 qeth_dbf[x].id = NULL;
5008         }
5009 }
5010
5011 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5012 {
5013         char dbf_txt_buf[32];
5014         va_list args;
5015
5016         if (level > id->level)
5017                 return;
5018         va_start(args, fmt);
5019         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5020         va_end(args);
5021         debug_text_event(id, level, dbf_txt_buf);
5022 }
5023 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5024
5025 static int qeth_register_dbf_views(void)
5026 {
5027         int ret;
5028         int x;
5029
5030         for (x = 0; x < QETH_DBF_INFOS; x++) {
5031                 /* register the areas */
5032                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5033                                                 qeth_dbf[x].pages,
5034                                                 qeth_dbf[x].areas,
5035                                                 qeth_dbf[x].len);
5036                 if (qeth_dbf[x].id == NULL) {
5037                         qeth_unregister_dbf_views();
5038                         return -ENOMEM;
5039                 }
5040
5041                 /* register a view */
5042                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5043                 if (ret) {
5044                         qeth_unregister_dbf_views();
5045                         return ret;
5046                 }
5047
5048                 /* set a passing level */
5049                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5050         }
5051
5052         return 0;
5053 }
5054
5055 int qeth_core_load_discipline(struct qeth_card *card,
5056                 enum qeth_discipline_id discipline)
5057 {
5058         int rc = 0;
5059         mutex_lock(&qeth_mod_mutex);
5060         switch (discipline) {
5061         case QETH_DISCIPLINE_LAYER3:
5062                 card->discipline = try_then_request_module(
5063                         symbol_get(qeth_l3_discipline), "qeth_l3");
5064                 break;
5065         case QETH_DISCIPLINE_LAYER2:
5066                 card->discipline = try_then_request_module(
5067                         symbol_get(qeth_l2_discipline), "qeth_l2");
5068                 break;
5069         }
5070         if (!card->discipline) {
5071                 dev_err(&card->gdev->dev, "There is no kernel module to "
5072                         "support discipline %d\n", discipline);
5073                 rc = -EINVAL;
5074         }
5075         mutex_unlock(&qeth_mod_mutex);
5076         return rc;
5077 }
5078
5079 void qeth_core_free_discipline(struct qeth_card *card)
5080 {
5081         if (card->options.layer2)
5082                 symbol_put(qeth_l2_discipline);
5083         else
5084                 symbol_put(qeth_l3_discipline);
5085         card->discipline = NULL;
5086 }
5087
5088 static const struct device_type qeth_generic_devtype = {
5089         .name = "qeth_generic",
5090         .groups = qeth_generic_attr_groups,
5091 };
5092 static const struct device_type qeth_osn_devtype = {
5093         .name = "qeth_osn",
5094         .groups = qeth_osn_attr_groups,
5095 };
5096
5097 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5098 {
5099         struct qeth_card *card;
5100         struct device *dev;
5101         int rc;
5102         unsigned long flags;
5103         char dbf_name[20];
5104
5105         QETH_DBF_TEXT(SETUP, 2, "probedev");
5106
5107         dev = &gdev->dev;
5108         if (!get_device(dev))
5109                 return -ENODEV;
5110
5111         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5112
5113         card = qeth_alloc_card();
5114         if (!card) {
5115                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5116                 rc = -ENOMEM;
5117                 goto err_dev;
5118         }
5119
5120         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5121                 dev_name(&gdev->dev));
5122         card->debug = debug_register(dbf_name, 2, 1, 8);
5123         if (!card->debug) {
5124                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5125                 rc = -ENOMEM;
5126                 goto err_card;
5127         }
5128         debug_register_view(card->debug, &debug_hex_ascii_view);
5129
5130         card->read.ccwdev  = gdev->cdev[0];
5131         card->write.ccwdev = gdev->cdev[1];
5132         card->data.ccwdev  = gdev->cdev[2];
5133         dev_set_drvdata(&gdev->dev, card);
5134         card->gdev = gdev;
5135         gdev->cdev[0]->handler = qeth_irq;
5136         gdev->cdev[1]->handler = qeth_irq;
5137         gdev->cdev[2]->handler = qeth_irq;
5138
5139         rc = qeth_determine_card_type(card);
5140         if (rc) {
5141                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5142                 goto err_dbf;
5143         }
5144         rc = qeth_setup_card(card);
5145         if (rc) {
5146                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5147                 goto err_dbf;
5148         }
5149
5150         if (card->info.type == QETH_CARD_TYPE_OSN)
5151                 gdev->dev.type = &qeth_osn_devtype;
5152         else
5153                 gdev->dev.type = &qeth_generic_devtype;
5154
5155         switch (card->info.type) {
5156         case QETH_CARD_TYPE_OSN:
5157         case QETH_CARD_TYPE_OSM:
5158                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5159                 if (rc)
5160                         goto err_dbf;
5161                 rc = card->discipline->setup(card->gdev);
5162                 if (rc)
5163                         goto err_disc;
5164         case QETH_CARD_TYPE_OSD:
5165         case QETH_CARD_TYPE_OSX:
5166         default:
5167                 break;
5168         }
5169
5170         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5171         list_add_tail(&card->list, &qeth_core_card_list.list);
5172         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5173
5174         qeth_determine_capabilities(card);
5175         return 0;
5176
5177 err_disc:
5178         qeth_core_free_discipline(card);
5179 err_dbf:
5180         debug_unregister(card->debug);
5181 err_card:
5182         qeth_core_free_card(card);
5183 err_dev:
5184         put_device(dev);
5185         return rc;
5186 }
5187
5188 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5189 {
5190         unsigned long flags;
5191         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5192
5193         QETH_DBF_TEXT(SETUP, 2, "removedv");
5194
5195         if (card->discipline) {
5196                 card->discipline->remove(gdev);
5197                 qeth_core_free_discipline(card);
5198         }
5199
5200         debug_unregister(card->debug);
5201         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5202         list_del(&card->list);
5203         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5204         qeth_core_free_card(card);
5205         dev_set_drvdata(&gdev->dev, NULL);
5206         put_device(&gdev->dev);
5207         return;
5208 }
5209
5210 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5211 {
5212         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5213         int rc = 0;
5214         int def_discipline;
5215
5216         if (!card->discipline) {
5217                 if (card->info.type == QETH_CARD_TYPE_IQD)
5218                         def_discipline = QETH_DISCIPLINE_LAYER3;
5219                 else
5220                         def_discipline = QETH_DISCIPLINE_LAYER2;
5221                 rc = qeth_core_load_discipline(card, def_discipline);
5222                 if (rc)
5223                         goto err;
5224                 rc = card->discipline->setup(card->gdev);
5225                 if (rc)
5226                         goto err;
5227         }
5228         rc = card->discipline->set_online(gdev);
5229 err:
5230         return rc;
5231 }
5232
5233 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5234 {
5235         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5236         return card->discipline->set_offline(gdev);
5237 }
5238
5239 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5240 {
5241         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5242         if (card->discipline && card->discipline->shutdown)
5243                 card->discipline->shutdown(gdev);
5244 }
5245
5246 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5247 {
5248         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5249         if (card->discipline && card->discipline->prepare)
5250                 return card->discipline->prepare(gdev);
5251         return 0;
5252 }
5253
5254 static void qeth_core_complete(struct ccwgroup_device *gdev)
5255 {
5256         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5257         if (card->discipline && card->discipline->complete)
5258                 card->discipline->complete(gdev);
5259 }
5260
5261 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5262 {
5263         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5264         if (card->discipline && card->discipline->freeze)
5265                 return card->discipline->freeze(gdev);
5266         return 0;
5267 }
5268
5269 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5270 {
5271         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5272         if (card->discipline && card->discipline->thaw)
5273                 return card->discipline->thaw(gdev);
5274         return 0;
5275 }
5276
5277 static int qeth_core_restore(struct ccwgroup_device *gdev)
5278 {
5279         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5280         if (card->discipline && card->discipline->restore)
5281                 return card->discipline->restore(gdev);
5282         return 0;
5283 }
5284
5285 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5286         .driver = {
5287                 .owner = THIS_MODULE,
5288                 .name = "qeth",
5289         },
5290         .setup = qeth_core_probe_device,
5291         .remove = qeth_core_remove_device,
5292         .set_online = qeth_core_set_online,
5293         .set_offline = qeth_core_set_offline,
5294         .shutdown = qeth_core_shutdown,
5295         .prepare = qeth_core_prepare,
5296         .complete = qeth_core_complete,
5297         .freeze = qeth_core_freeze,
5298         .thaw = qeth_core_thaw,
5299         .restore = qeth_core_restore,
5300 };
5301
5302 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5303                                             const char *buf, size_t count)
5304 {
5305         int err;
5306
5307         err = ccwgroup_create_dev(qeth_core_root_dev,
5308                                   &qeth_core_ccwgroup_driver, 3, buf);
5309
5310         return err ? err : count;
5311 }
5312 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5313
5314 static struct attribute *qeth_drv_attrs[] = {
5315         &driver_attr_group.attr,
5316         NULL,
5317 };
5318 static struct attribute_group qeth_drv_attr_group = {
5319         .attrs = qeth_drv_attrs,
5320 };
5321 static const struct attribute_group *qeth_drv_attr_groups[] = {
5322         &qeth_drv_attr_group,
5323         NULL,
5324 };
5325
5326 static struct {
5327         const char str[ETH_GSTRING_LEN];
5328 } qeth_ethtool_stats_keys[] = {
5329 /*  0 */{"rx skbs"},
5330         {"rx buffers"},
5331         {"tx skbs"},
5332         {"tx buffers"},
5333         {"tx skbs no packing"},
5334         {"tx buffers no packing"},
5335         {"tx skbs packing"},
5336         {"tx buffers packing"},
5337         {"tx sg skbs"},
5338         {"tx sg frags"},
5339 /* 10 */{"rx sg skbs"},
5340         {"rx sg frags"},
5341         {"rx sg page allocs"},
5342         {"tx large kbytes"},
5343         {"tx large count"},
5344         {"tx pk state ch n->p"},
5345         {"tx pk state ch p->n"},
5346         {"tx pk watermark low"},
5347         {"tx pk watermark high"},
5348         {"queue 0 buffer usage"},
5349 /* 20 */{"queue 1 buffer usage"},
5350         {"queue 2 buffer usage"},
5351         {"queue 3 buffer usage"},
5352         {"rx poll time"},
5353         {"rx poll count"},
5354         {"rx do_QDIO time"},
5355         {"rx do_QDIO count"},
5356         {"tx handler time"},
5357         {"tx handler count"},
5358         {"tx time"},
5359 /* 30 */{"tx count"},
5360         {"tx do_QDIO time"},
5361         {"tx do_QDIO count"},
5362         {"tx csum"},
5363         {"tx lin"},
5364         {"cq handler count"},
5365         {"cq handler time"}
5366 };
5367
5368 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5369 {
5370         switch (stringset) {
5371         case ETH_SS_STATS:
5372                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5373         default:
5374                 return -EINVAL;
5375         }
5376 }
5377 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5378
5379 void qeth_core_get_ethtool_stats(struct net_device *dev,
5380                 struct ethtool_stats *stats, u64 *data)
5381 {
5382         struct qeth_card *card = dev->ml_priv;
5383         data[0] = card->stats.rx_packets -
5384                                 card->perf_stats.initial_rx_packets;
5385         data[1] = card->perf_stats.bufs_rec;
5386         data[2] = card->stats.tx_packets -
5387                                 card->perf_stats.initial_tx_packets;
5388         data[3] = card->perf_stats.bufs_sent;
5389         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5390                         - card->perf_stats.skbs_sent_pack;
5391         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5392         data[6] = card->perf_stats.skbs_sent_pack;
5393         data[7] = card->perf_stats.bufs_sent_pack;
5394         data[8] = card->perf_stats.sg_skbs_sent;
5395         data[9] = card->perf_stats.sg_frags_sent;
5396         data[10] = card->perf_stats.sg_skbs_rx;
5397         data[11] = card->perf_stats.sg_frags_rx;
5398         data[12] = card->perf_stats.sg_alloc_page_rx;
5399         data[13] = (card->perf_stats.large_send_bytes >> 10);
5400         data[14] = card->perf_stats.large_send_cnt;
5401         data[15] = card->perf_stats.sc_dp_p;
5402         data[16] = card->perf_stats.sc_p_dp;
5403         data[17] = QETH_LOW_WATERMARK_PACK;
5404         data[18] = QETH_HIGH_WATERMARK_PACK;
5405         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5406         data[20] = (card->qdio.no_out_queues > 1) ?
5407                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5408         data[21] = (card->qdio.no_out_queues > 2) ?
5409                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5410         data[22] = (card->qdio.no_out_queues > 3) ?
5411                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5412         data[23] = card->perf_stats.inbound_time;
5413         data[24] = card->perf_stats.inbound_cnt;
5414         data[25] = card->perf_stats.inbound_do_qdio_time;
5415         data[26] = card->perf_stats.inbound_do_qdio_cnt;
5416         data[27] = card->perf_stats.outbound_handler_time;
5417         data[28] = card->perf_stats.outbound_handler_cnt;
5418         data[29] = card->perf_stats.outbound_time;
5419         data[30] = card->perf_stats.outbound_cnt;
5420         data[31] = card->perf_stats.outbound_do_qdio_time;
5421         data[32] = card->perf_stats.outbound_do_qdio_cnt;
5422         data[33] = card->perf_stats.tx_csum;
5423         data[34] = card->perf_stats.tx_lin;
5424         data[35] = card->perf_stats.cq_cnt;
5425         data[36] = card->perf_stats.cq_time;
5426 }
5427 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5428
5429 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5430 {
5431         switch (stringset) {
5432         case ETH_SS_STATS:
5433                 memcpy(data, &qeth_ethtool_stats_keys,
5434                         sizeof(qeth_ethtool_stats_keys));
5435                 break;
5436         default:
5437                 WARN_ON(1);
5438                 break;
5439         }
5440 }
5441 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5442
5443 void qeth_core_get_drvinfo(struct net_device *dev,
5444                 struct ethtool_drvinfo *info)
5445 {
5446         struct qeth_card *card = dev->ml_priv;
5447         if (card->options.layer2)
5448                 strcpy(info->driver, "qeth_l2");
5449         else
5450                 strcpy(info->driver, "qeth_l3");
5451
5452         strcpy(info->version, "1.0");
5453         strcpy(info->fw_version, card->info.mcl_level);
5454         sprintf(info->bus_info, "%s/%s/%s",
5455                         CARD_RDEV_ID(card),
5456                         CARD_WDEV_ID(card),
5457                         CARD_DDEV_ID(card));
5458 }
5459 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5460
5461 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5462                                         struct ethtool_cmd *ecmd)
5463 {
5464         struct qeth_card *card = netdev->ml_priv;
5465         enum qeth_link_types link_type;
5466
5467         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5468                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5469         else
5470                 link_type = card->info.link_type;
5471
5472         ecmd->transceiver = XCVR_INTERNAL;
5473         ecmd->supported = SUPPORTED_Autoneg;
5474         ecmd->advertising = ADVERTISED_Autoneg;
5475         ecmd->duplex = DUPLEX_FULL;
5476         ecmd->autoneg = AUTONEG_ENABLE;
5477
5478         switch (link_type) {
5479         case QETH_LINK_TYPE_FAST_ETH:
5480         case QETH_LINK_TYPE_LANE_ETH100:
5481                 ecmd->supported |= SUPPORTED_10baseT_Half |
5482                                         SUPPORTED_10baseT_Full |
5483                                         SUPPORTED_100baseT_Half |
5484                                         SUPPORTED_100baseT_Full |
5485                                         SUPPORTED_TP;
5486                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5487                                         ADVERTISED_10baseT_Full |
5488                                         ADVERTISED_100baseT_Half |
5489                                         ADVERTISED_100baseT_Full |
5490                                         ADVERTISED_TP;
5491                 ecmd->speed = SPEED_100;
5492                 ecmd->port = PORT_TP;
5493                 break;
5494
5495         case QETH_LINK_TYPE_GBIT_ETH:
5496         case QETH_LINK_TYPE_LANE_ETH1000:
5497                 ecmd->supported |= SUPPORTED_10baseT_Half |
5498                                         SUPPORTED_10baseT_Full |
5499                                         SUPPORTED_100baseT_Half |
5500                                         SUPPORTED_100baseT_Full |
5501                                         SUPPORTED_1000baseT_Half |
5502                                         SUPPORTED_1000baseT_Full |
5503                                         SUPPORTED_FIBRE;
5504                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5505                                         ADVERTISED_10baseT_Full |
5506                                         ADVERTISED_100baseT_Half |
5507                                         ADVERTISED_100baseT_Full |
5508                                         ADVERTISED_1000baseT_Half |
5509                                         ADVERTISED_1000baseT_Full |
5510                                         ADVERTISED_FIBRE;
5511                 ecmd->speed = SPEED_1000;
5512                 ecmd->port = PORT_FIBRE;
5513                 break;
5514
5515         case QETH_LINK_TYPE_10GBIT_ETH:
5516                 ecmd->supported |= SUPPORTED_10baseT_Half |
5517                                         SUPPORTED_10baseT_Full |
5518                                         SUPPORTED_100baseT_Half |
5519                                         SUPPORTED_100baseT_Full |
5520                                         SUPPORTED_1000baseT_Half |
5521                                         SUPPORTED_1000baseT_Full |
5522                                         SUPPORTED_10000baseT_Full |
5523                                         SUPPORTED_FIBRE;
5524                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5525                                         ADVERTISED_10baseT_Full |
5526                                         ADVERTISED_100baseT_Half |
5527                                         ADVERTISED_100baseT_Full |
5528                                         ADVERTISED_1000baseT_Half |
5529                                         ADVERTISED_1000baseT_Full |
5530                                         ADVERTISED_10000baseT_Full |
5531                                         ADVERTISED_FIBRE;
5532                 ecmd->speed = SPEED_10000;
5533                 ecmd->port = PORT_FIBRE;
5534                 break;
5535
5536         default:
5537                 ecmd->supported |= SUPPORTED_10baseT_Half |
5538                                         SUPPORTED_10baseT_Full |
5539                                         SUPPORTED_TP;
5540                 ecmd->advertising |= ADVERTISED_10baseT_Half |
5541                                         ADVERTISED_10baseT_Full |
5542                                         ADVERTISED_TP;
5543                 ecmd->speed = SPEED_10;
5544                 ecmd->port = PORT_TP;
5545         }
5546
5547         return 0;
5548 }
5549 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5550
5551 static int __init qeth_core_init(void)
5552 {
5553         int rc;
5554
5555         pr_info("loading core functions\n");
5556         INIT_LIST_HEAD(&qeth_core_card_list.list);
5557         rwlock_init(&qeth_core_card_list.rwlock);
5558         mutex_init(&qeth_mod_mutex);
5559
5560         rc = qeth_register_dbf_views();
5561         if (rc)
5562                 goto out_err;
5563         qeth_core_root_dev = root_device_register("qeth");
5564         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5565         if (rc)
5566                 goto register_err;
5567         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5568                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5569         if (!qeth_core_header_cache) {
5570                 rc = -ENOMEM;
5571                 goto slab_err;
5572         }
5573         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5574                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5575         if (!qeth_qdio_outbuf_cache) {
5576                 rc = -ENOMEM;
5577                 goto cqslab_err;
5578         }
5579         rc = ccw_driver_register(&qeth_ccw_driver);
5580         if (rc)
5581                 goto ccw_err;
5582         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5583         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5584         if (rc)
5585                 goto ccwgroup_err;
5586
5587         return 0;
5588
5589 ccwgroup_err:
5590         ccw_driver_unregister(&qeth_ccw_driver);
5591 ccw_err:
5592         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5593 cqslab_err:
5594         kmem_cache_destroy(qeth_core_header_cache);
5595 slab_err:
5596         root_device_unregister(qeth_core_root_dev);
5597 register_err:
5598         qeth_unregister_dbf_views();
5599 out_err:
5600         pr_err("Initializing the qeth device driver failed\n");
5601         return rc;
5602 }
5603
5604 static void __exit qeth_core_exit(void)
5605 {
5606         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5607         ccw_driver_unregister(&qeth_ccw_driver);
5608         kmem_cache_destroy(qeth_qdio_outbuf_cache);
5609         kmem_cache_destroy(qeth_core_header_cache);
5610         root_device_unregister(qeth_core_root_dev);
5611         qeth_unregister_dbf_views();
5612         pr_info("core functions removed\n");
5613 }
5614
5615 module_init(qeth_core_init);
5616 module_exit(qeth_core_exit);
5617 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5618 MODULE_DESCRIPTION("qeth core functions");
5619 MODULE_LICENSE("GPL");