drivers/s390/net/qeth_core_main.c

   1 /*
   2  *  drivers/s390/net/qeth_core_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/ip.h>
  20 #include <linux/tcp.h>
  21 #include <linux/mii.h>
  22 #include <linux/kthread.h>
  23 #include <linux/slab.h>
  24
  25 #include <asm/ebcdic.h>
  26 #include <asm/io.h>
  27
  28 #include "qeth_core.h"
  29
  30 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  31         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  32         /*                   N  P  A    M  L  V                      H  */
  33         [QETH_DBF_SETUP] = {"qeth_setup",
  34                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  35         [QETH_DBF_QERR]  = {"qeth_qerr",
  36                                 2, 1,   8, 2, &debug_hex_ascii_view, NULL},
  37         [QETH_DBF_MSG]   = {"qeth_msg",
  38                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  39         [QETH_DBF_MISC]  = {"qeth_misc",
  40                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  41         [QETH_DBF_CTRL]  = {"qeth_control",
  42                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  43 };
  44 EXPORT_SYMBOL_GPL(qeth_dbf);
  45
  46 struct qeth_card_list_struct qeth_core_card_list;
  47 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  48 struct kmem_cache *qeth_core_header_cache;
  49 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  50
  51 static struct device *qeth_core_root_dev;
  52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
  53 static struct lock_class_key qdio_out_skb_queue_key;
  54
  55 static void qeth_send_control_data_cb(struct qeth_channel *,
  56                         struct qeth_cmd_buffer *);
  57 static int qeth_issue_next_read(struct qeth_card *);
  58 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  59 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  60 static void qeth_free_buffer_pool(struct qeth_card *);
  61 static int qeth_qdio_establish(struct qeth_card *);
  62
  63
  64 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  65                 struct qdio_buffer *buffer, int is_tso,
  66                 int *next_element_to_fill)
  67 {
  68         struct skb_frag_struct *frag;
  69         int fragno;
  70         unsigned long addr;
  71         int element, cnt, dlen;
  72
  73         fragno = skb_shinfo(skb)->nr_frags;
  74         element = *next_element_to_fill;
  75         dlen = 0;
  76
  77         if (is_tso)
  78                 buffer->element[element].flags =
  79                         SBAL_FLAGS_MIDDLE_FRAG;
  80         else
  81                 buffer->element[element].flags =
  82                         SBAL_FLAGS_FIRST_FRAG;
  83         dlen = skb->len - skb->data_len;
  84         if (dlen) {
  85                 buffer->element[element].addr = skb->data;
  86                 buffer->element[element].length = dlen;
  87                 element++;
  88         }
  89         for (cnt = 0; cnt < fragno; cnt++) {
  90                 frag = &skb_shinfo(skb)->frags[cnt];
  91                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  92                         frag->page_offset;
  93                 buffer->element[element].addr = (char *)addr;
  94                 buffer->element[element].length = frag->size;
  95                 if (cnt < (fragno - 1))
  96                         buffer->element[element].flags =
  97                                 SBAL_FLAGS_MIDDLE_FRAG;
  98                 else
  99                         buffer->element[element].flags =
 100                                 SBAL_FLAGS_LAST_FRAG;
 101                 element++;
 102         }
 103         *next_element_to_fill = element;
 104 }
 105
 106 static inline const char *qeth_get_cardname(struct qeth_card *card)
 107 {
 108         if (card->info.guestlan) {
 109                 switch (card->info.type) {
 110                 case QETH_CARD_TYPE_OSD:
 111                         return " Guest LAN QDIO";
 112                 case QETH_CARD_TYPE_IQD:
 113                         return " Guest LAN Hiper";
 114                 case QETH_CARD_TYPE_OSM:
 115                         return " Guest LAN QDIO - OSM";
 116                 case QETH_CARD_TYPE_OSX:
 117                         return " Guest LAN QDIO - OSX";
 118                 default:
 119                         return " unknown";
 120                 }
 121         } else {
 122                 switch (card->info.type) {
 123                 case QETH_CARD_TYPE_OSD:
 124                         return " OSD Express";
 125                 case QETH_CARD_TYPE_IQD:
 126                         return " HiperSockets";
 127                 case QETH_CARD_TYPE_OSN:
 128                         return " OSN QDIO";
 129                 case QETH_CARD_TYPE_OSM:
 130                         return " OSM QDIO";
 131                 case QETH_CARD_TYPE_OSX:
 132                         return " OSX QDIO";
 133                 default:
 134                         return " unknown";
 135                 }
 136         }
 137         return " n/a";
 138 }
 139
 140 /* max length to be returned: 14 */
 141 const char *qeth_get_cardname_short(struct qeth_card *card)
 142 {
 143         if (card->info.guestlan) {
 144                 switch (card->info.type) {
 145                 case QETH_CARD_TYPE_OSD:
 146                         return "GuestLAN QDIO";
 147                 case QETH_CARD_TYPE_IQD:
 148                         return "GuestLAN Hiper";
 149                 case QETH_CARD_TYPE_OSM:
 150                         return "GuestLAN OSM";
 151                 case QETH_CARD_TYPE_OSX:
 152                         return "GuestLAN OSX";
 153                 default:
 154                         return "unknown";
 155                 }
 156         } else {
 157                 switch (card->info.type) {
 158                 case QETH_CARD_TYPE_OSD:
 159                         switch (card->info.link_type) {
 160                         case QETH_LINK_TYPE_FAST_ETH:
 161                                 return "OSD_100";
 162                         case QETH_LINK_TYPE_HSTR:
 163                                 return "HSTR";
 164                         case QETH_LINK_TYPE_GBIT_ETH:
 165                                 return "OSD_1000";
 166                         case QETH_LINK_TYPE_10GBIT_ETH:
 167                                 return "OSD_10GIG";
 168                         case QETH_LINK_TYPE_LANE_ETH100:
 169                                 return "OSD_FE_LANE";
 170                         case QETH_LINK_TYPE_LANE_TR:
 171                                 return "OSD_TR_LANE";
 172                         case QETH_LINK_TYPE_LANE_ETH1000:
 173                                 return "OSD_GbE_LANE";
 174                         case QETH_LINK_TYPE_LANE:
 175                                 return "OSD_ATM_LANE";
 176                         default:
 177                                 return "OSD_Express";
 178                         }
 179                 case QETH_CARD_TYPE_IQD:
 180                         return "HiperSockets";
 181                 case QETH_CARD_TYPE_OSN:
 182                         return "OSN";
 183                 case QETH_CARD_TYPE_OSM:
 184                         return "OSM_1000";
 185                 case QETH_CARD_TYPE_OSX:
 186                         return "OSX_10GIG";
 187                 default:
 188                         return "unknown";
 189                 }
 190         }
 191         return "n/a";
 192 }
 193
 194 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 195                          int clear_start_mask)
 196 {
 197         unsigned long flags;
 198
 199         spin_lock_irqsave(&card->thread_mask_lock, flags);
 200         card->thread_allowed_mask = threads;
 201         if (clear_start_mask)
 202                 card->thread_start_mask &= threads;
 203         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 204         wake_up(&card->wait_q);
 205 }
 206 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 207
 208 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 209 {
 210         unsigned long flags;
 211         int rc = 0;
 212
 213         spin_lock_irqsave(&card->thread_mask_lock, flags);
 214         rc = (card->thread_running_mask & threads);
 215         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 216         return rc;
 217 }
 218 EXPORT_SYMBOL_GPL(qeth_threads_running);
 219
 220 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 221 {
 222         return wait_event_interruptible(card->wait_q,
 223                         qeth_threads_running(card, threads) == 0);
 224 }
 225 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 226
 227 void qeth_clear_working_pool_list(struct qeth_card *card)
 228 {
 229         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 230
 231         QETH_CARD_TEXT(card, 5, "clwrklst");
 232         list_for_each_entry_safe(pool_entry, tmp,
 233                             &card->qdio.in_buf_pool.entry_list, list){
 234                         list_del(&pool_entry->list);
 235         }
 236 }
 237 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 238
 239 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 240 {
 241         struct qeth_buffer_pool_entry *pool_entry;
 242         void *ptr;
 243         int i, j;
 244
 245         QETH_CARD_TEXT(card, 5, "alocpool");
 246         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 247                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 248                 if (!pool_entry) {
 249                         qeth_free_buffer_pool(card);
 250                         return -ENOMEM;
 251                 }
 252                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 253                         ptr = (void *) __get_free_page(GFP_KERNEL);
 254                         if (!ptr) {
 255                                 while (j > 0)
 256                                         free_page((unsigned long)
 257                                                   pool_entry->elements[--j]);
 258                                 kfree(pool_entry);
 259                                 qeth_free_buffer_pool(card);
 260                                 return -ENOMEM;
 261                         }
 262                         pool_entry->elements[j] = ptr;
 263                 }
 264                 list_add(&pool_entry->init_list,
 265                          &card->qdio.init_pool.entry_list);
 266         }
 267         return 0;
 268 }
 269
 270 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 271 {
 272         QETH_CARD_TEXT(card, 2, "realcbp");
 273
 274         if ((card->state != CARD_STATE_DOWN) &&
 275             (card->state != CARD_STATE_RECOVER))
 276                 return -EPERM;
 277
 278         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 279         qeth_clear_working_pool_list(card);
 280         qeth_free_buffer_pool(card);
 281         card->qdio.in_buf_pool.buf_count = bufcnt;
 282         card->qdio.init_pool.buf_count = bufcnt;
 283         return qeth_alloc_buffer_pool(card);
 284 }
 285 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 286
 287 static int qeth_issue_next_read(struct qeth_card *card)
 288 {
 289         int rc;
 290         struct qeth_cmd_buffer *iob;
 291
 292         QETH_CARD_TEXT(card, 5, "issnxrd");
 293         if (card->read.state != CH_STATE_UP)
 294                 return -EIO;
 295         iob = qeth_get_buffer(&card->read);
 296         if (!iob) {
 297                 dev_warn(&card->gdev->dev, "The qeth device driver "
 298                         "failed to recover an error on the device\n");
 299                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 300                         "available\n", dev_name(&card->gdev->dev));
 301                 return -ENOMEM;
 302         }
 303         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 304         QETH_CARD_TEXT(card, 6, "noirqpnd");
 305         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 306                               (addr_t) iob, 0, 0);
 307         if (rc) {
 308                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 309                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 310                 atomic_set(&card->read.irq_pending, 0);
 311                 qeth_schedule_recovery(card);
 312                 wake_up(&card->wait_q);
 313         }
 314         return rc;
 315 }
 316
 317 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 318 {
 319         struct qeth_reply *reply;
 320
 321         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 322         if (reply) {
 323                 atomic_set(&reply->refcnt, 1);
 324                 atomic_set(&reply->received, 0);
 325                 reply->card = card;
 326         };
 327         return reply;
 328 }
 329
 330 static void qeth_get_reply(struct qeth_reply *reply)
 331 {
 332         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 333         atomic_inc(&reply->refcnt);
 334 }
 335
 336 static void qeth_put_reply(struct qeth_reply *reply)
 337 {
 338         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 339         if (atomic_dec_and_test(&reply->refcnt))
 340                 kfree(reply);
 341 }
 342
 343 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 344                 struct qeth_card *card)
 345 {
 346         char *ipa_name;
 347         int com = cmd->hdr.command;
 348         ipa_name = qeth_get_ipa_cmd_name(com);
 349         if (rc)
 350                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 351                                 ipa_name, com, QETH_CARD_IFNAME(card),
 352                                         rc, qeth_get_ipa_msg(rc));
 353         else
 354                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 355                                 ipa_name, com, QETH_CARD_IFNAME(card));
 356 }
 357
 358 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 359                 struct qeth_cmd_buffer *iob)
 360 {
 361         struct qeth_ipa_cmd *cmd = NULL;
 362
 363         QETH_CARD_TEXT(card, 5, "chkipad");
 364         if (IS_IPA(iob->data)) {
 365                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 366                 if (IS_IPA_REPLY(cmd)) {
 367                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 368                             cmd->hdr.command != IPA_CMD_DELCCID &&
 369                             cmd->hdr.command != IPA_CMD_MODCCID &&
 370                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 371                                 qeth_issue_ipa_msg(cmd,
 372                                                 cmd->hdr.return_code, card);
 373                         return cmd;
 374                 } else {
 375                         switch (cmd->hdr.command) {
 376                         case IPA_CMD_STOPLAN:
 377                                 dev_warn(&card->gdev->dev,
 378                                            "The link for interface %s on CHPID"
 379                                            " 0x%X failed\n",
 380                                            QETH_CARD_IFNAME(card),
 381                                            card->info.chpid);
 382                                 card->lan_online = 0;
 383                                 if (card->dev && netif_carrier_ok(card->dev))
 384                                         netif_carrier_off(card->dev);
 385                                 return NULL;
 386                         case IPA_CMD_STARTLAN:
 387                                 dev_info(&card->gdev->dev,
 388                                            "The link for %s on CHPID 0x%X has"
 389                                            " been restored\n",
 390                                            QETH_CARD_IFNAME(card),
 391                                            card->info.chpid);
 392                                 netif_carrier_on(card->dev);
 393                                 card->lan_online = 1;
 394                                 qeth_schedule_recovery(card);
 395                                 return NULL;
 396                         case IPA_CMD_MODCCID:
 397                                 return cmd;
 398                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 399                                 QETH_CARD_TEXT(card, 3, "irla");
 400                                 break;
 401                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 402                                 QETH_CARD_TEXT(card, 3, "urla");
 403                                 break;
 404                         default:
 405                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 406                                            "but not a reply!\n");
 407                                 break;
 408                         }
 409                 }
 410         }
 411         return cmd;
 412 }
 413
 414 void qeth_clear_ipacmd_list(struct qeth_card *card)
 415 {
 416         struct qeth_reply *reply, *r;
 417         unsigned long flags;
 418
 419         QETH_CARD_TEXT(card, 4, "clipalst");
 420
 421         spin_lock_irqsave(&card->lock, flags);
 422         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 423                 qeth_get_reply(reply);
 424                 reply->rc = -EIO;
 425                 atomic_inc(&reply->received);
 426                 list_del_init(&reply->list);
 427                 wake_up(&reply->wait_q);
 428                 qeth_put_reply(reply);
 429         }
 430         spin_unlock_irqrestore(&card->lock, flags);
 431 }
 432 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 433
 434 static int qeth_check_idx_response(struct qeth_card *card,
 435         unsigned char *buffer)
 436 {
 437         if (!buffer)
 438                 return 0;
 439
 440         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 441         if ((buffer[2] & 0xc0) == 0xc0) {
 442                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 443                            "with cause code 0x%02x%s\n",
 444                            buffer[4],
 445                            ((buffer[4] == 0x22) ?
 446                             " -- try another portname" : ""));
 447                 QETH_CARD_TEXT(card, 2, "ckidxres");
 448                 QETH_CARD_TEXT(card, 2, " idxterm");
 449                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 450                 if (buffer[4] == 0xf6) {
 451                         dev_err(&card->gdev->dev,
 452                         "The qeth device is not configured "
 453                         "for the OSI layer required by z/VM\n");
 454                         return -EPERM;
 455                 }
 456                 return -EIO;
 457         }
 458         return 0;
 459 }
 460
 461 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 462                 __u32 len)
 463 {
 464         struct qeth_card *card;
 465
 466         card = CARD_FROM_CDEV(channel->ccwdev);
 467         QETH_CARD_TEXT(card, 4, "setupccw");
 468         if (channel == &card->read)
 469                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 470         else
 471                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 472         channel->ccw.count = len;
 473         channel->ccw.cda = (__u32) __pa(iob);
 474 }
 475
 476 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 477 {
 478         __u8 index;
 479
 480         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 481         index = channel->io_buf_no;
 482         do {
 483                 if (channel->iob[index].state == BUF_STATE_FREE) {
 484                         channel->iob[index].state = BUF_STATE_LOCKED;
 485                         channel->io_buf_no = (channel->io_buf_no + 1) %
 486                                 QETH_CMD_BUFFER_NO;
 487                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 488                         return channel->iob + index;
 489                 }
 490                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 491         } while (index != channel->io_buf_no);
 492
 493         return NULL;
 494 }
 495
 496 void qeth_release_buffer(struct qeth_channel *channel,
 497                 struct qeth_cmd_buffer *iob)
 498 {
 499         unsigned long flags;
 500
 501         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 502         spin_lock_irqsave(&channel->iob_lock, flags);
 503         memset(iob->data, 0, QETH_BUFSIZE);
 504         iob->state = BUF_STATE_FREE;
 505         iob->callback = qeth_send_control_data_cb;
 506         iob->rc = 0;
 507         spin_unlock_irqrestore(&channel->iob_lock, flags);
 508 }
 509 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 510
 511 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 512 {
 513         struct qeth_cmd_buffer *buffer = NULL;
 514         unsigned long flags;
 515
 516         spin_lock_irqsave(&channel->iob_lock, flags);
 517         buffer = __qeth_get_buffer(channel);
 518         spin_unlock_irqrestore(&channel->iob_lock, flags);
 519         return buffer;
 520 }
 521
 522 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 523 {
 524         struct qeth_cmd_buffer *buffer;
 525         wait_event(channel->wait_q,
 526                    ((buffer = qeth_get_buffer(channel)) != NULL));
 527         return buffer;
 528 }
 529 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 530
 531 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 532 {
 533         int cnt;
 534
 535         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 536                 qeth_release_buffer(channel, &channel->iob[cnt]);
 537         channel->buf_no = 0;
 538         channel->io_buf_no = 0;
 539 }
 540 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 541
 542 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 543                   struct qeth_cmd_buffer *iob)
 544 {
 545         struct qeth_card *card;
 546         struct qeth_reply *reply, *r;
 547         struct qeth_ipa_cmd *cmd;
 548         unsigned long flags;
 549         int keep_reply;
 550         int rc = 0;
 551
 552         card = CARD_FROM_CDEV(channel->ccwdev);
 553         QETH_CARD_TEXT(card, 4, "sndctlcb");
 554         rc = qeth_check_idx_response(card, iob->data);
 555         switch (rc) {
 556         case 0:
 557                 break;
 558         case -EIO:
 559                 qeth_clear_ipacmd_list(card);
 560                 qeth_schedule_recovery(card);
 561         default:
 562                 goto out;
 563         }
 564
 565         cmd = qeth_check_ipa_data(card, iob);
 566         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 567                 goto out;
 568         /*in case of OSN : check if cmd is set */
 569         if (card->info.type == QETH_CARD_TYPE_OSN &&
 570             cmd &&
 571             cmd->hdr.command != IPA_CMD_STARTLAN &&
 572             card->osn_info.assist_cb != NULL) {
 573                 card->osn_info.assist_cb(card->dev, cmd);
 574                 goto out;
 575         }
 576
 577         spin_lock_irqsave(&card->lock, flags);
 578         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 579                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 580                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 581                         qeth_get_reply(reply);
 582                         list_del_init(&reply->list);
 583                         spin_unlock_irqrestore(&card->lock, flags);
 584                         keep_reply = 0;
 585                         if (reply->callback != NULL) {
 586                                 if (cmd) {
 587                                         reply->offset = (__u16)((char *)cmd -
 588                                                         (char *)iob->data);
 589                                         keep_reply = reply->callback(card,
 590                                                         reply,
 591                                                         (unsigned long)cmd);
 592                                 } else
 593                                         keep_reply = reply->callback(card,
 594                                                         reply,
 595                                                         (unsigned long)iob);
 596                         }
 597                         if (cmd)
 598                                 reply->rc = (u16) cmd->hdr.return_code;
 599                         else if (iob->rc)
 600                                 reply->rc = iob->rc;
 601                         if (keep_reply) {
 602                                 spin_lock_irqsave(&card->lock, flags);
 603                                 list_add_tail(&reply->list,
 604                                               &card->cmd_waiter_list);
 605                                 spin_unlock_irqrestore(&card->lock, flags);
 606                         } else {
 607                                 atomic_inc(&reply->received);
 608                                 wake_up(&reply->wait_q);
 609                         }
 610                         qeth_put_reply(reply);
 611                         goto out;
 612                 }
 613         }
 614         spin_unlock_irqrestore(&card->lock, flags);
 615 out:
 616         memcpy(&card->seqno.pdu_hdr_ack,
 617                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 618                 QETH_SEQ_NO_LENGTH);
 619         qeth_release_buffer(channel, iob);
 620 }
 621
 622 static int qeth_setup_channel(struct qeth_channel *channel)
 623 {
 624         int cnt;
 625
 626         QETH_DBF_TEXT(SETUP, 2, "setupch");
 627         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 628                 channel->iob[cnt].data =
 629                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 630                 if (channel->iob[cnt].data == NULL)
 631                         break;
 632                 channel->iob[cnt].state = BUF_STATE_FREE;
 633                 channel->iob[cnt].channel = channel;
 634                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 635                 channel->iob[cnt].rc = 0;
 636         }
 637         if (cnt < QETH_CMD_BUFFER_NO) {
 638                 while (cnt-- > 0)
 639                         kfree(channel->iob[cnt].data);
 640                 return -ENOMEM;
 641         }
 642         channel->buf_no = 0;
 643         channel->io_buf_no = 0;
 644         atomic_set(&channel->irq_pending, 0);
 645         spin_lock_init(&channel->iob_lock);
 646
 647         init_waitqueue_head(&channel->wait_q);
 648         return 0;
 649 }
 650
 651 static int qeth_set_thread_start_bit(struct qeth_card *card,
 652                 unsigned long thread)
 653 {
 654         unsigned long flags;
 655
 656         spin_lock_irqsave(&card->thread_mask_lock, flags);
 657         if (!(card->thread_allowed_mask & thread) ||
 658               (card->thread_start_mask & thread)) {
 659                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 660                 return -EPERM;
 661         }
 662         card->thread_start_mask |= thread;
 663         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 664         return 0;
 665 }
 666
 667 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 668 {
 669         unsigned long flags;
 670
 671         spin_lock_irqsave(&card->thread_mask_lock, flags);
 672         card->thread_start_mask &= ~thread;
 673         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 674         wake_up(&card->wait_q);
 675 }
 676 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 677
 678 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 679 {
 680         unsigned long flags;
 681
 682         spin_lock_irqsave(&card->thread_mask_lock, flags);
 683         card->thread_running_mask &= ~thread;
 684         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 685         wake_up(&card->wait_q);
 686 }
 687 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 688
 689 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 690 {
 691         unsigned long flags;
 692         int rc = 0;
 693
 694         spin_lock_irqsave(&card->thread_mask_lock, flags);
 695         if (card->thread_start_mask & thread) {
 696                 if ((card->thread_allowed_mask & thread) &&
 697                     !(card->thread_running_mask & thread)) {
 698                         rc = 1;
 699                         card->thread_start_mask &= ~thread;
 700                         card->thread_running_mask |= thread;
 701                 } else
 702                         rc = -EPERM;
 703         }
 704         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 705         return rc;
 706 }
 707
 708 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 709 {
 710         int rc = 0;
 711
 712         wait_event(card->wait_q,
 713                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 714         return rc;
 715 }
 716 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 717
 718 void qeth_schedule_recovery(struct qeth_card *card)
 719 {
 720         QETH_CARD_TEXT(card, 2, "startrec");
 721         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 722                 schedule_work(&card->kernel_thread_starter);
 723 }
 724 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 725
 726 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 727 {
 728         int dstat, cstat;
 729         char *sense;
 730         struct qeth_card *card;
 731
 732         sense = (char *) irb->ecw;
 733         cstat = irb->scsw.cmd.cstat;
 734         dstat = irb->scsw.cmd.dstat;
 735         card = CARD_FROM_CDEV(cdev);
 736
 737         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 738                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 739                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 740                 QETH_CARD_TEXT(card, 2, "CGENCHK");
 741                 dev_warn(&cdev->dev, "The qeth device driver "
 742                         "failed to recover an error on the device\n");
 743                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
 744                         dev_name(&cdev->dev), dstat, cstat);
 745                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 746                                 16, 1, irb, 64, 1);
 747                 return 1;
 748         }
 749
 750         if (dstat & DEV_STAT_UNIT_CHECK) {
 751                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 752                     SENSE_RESETTING_EVENT_FLAG) {
 753                         QETH_CARD_TEXT(card, 2, "REVIND");
 754                         return 1;
 755                 }
 756                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 757                     SENSE_COMMAND_REJECT_FLAG) {
 758                         QETH_CARD_TEXT(card, 2, "CMDREJi");
 759                         return 1;
 760                 }
 761                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 762                         QETH_CARD_TEXT(card, 2, "AFFE");
 763                         return 1;
 764                 }
 765                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 766                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
 767                         return 0;
 768                 }
 769                 QETH_CARD_TEXT(card, 2, "DGENCHK");
 770                         return 1;
 771         }
 772         return 0;
 773 }
 774
 775 static long __qeth_check_irb_error(struct ccw_device *cdev,
 776                 unsigned long intparm, struct irb *irb)
 777 {
 778         struct qeth_card *card;
 779
 780         card = CARD_FROM_CDEV(cdev);
 781
 782         if (!IS_ERR(irb))
 783                 return 0;
 784
 785         switch (PTR_ERR(irb)) {
 786         case -EIO:
 787                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 788                         dev_name(&cdev->dev));
 789                 QETH_CARD_TEXT(card, 2, "ckirberr");
 790                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 791                 break;
 792         case -ETIMEDOUT:
 793                 dev_warn(&cdev->dev, "A hardware operation timed out"
 794                         " on the device\n");
 795                 QETH_CARD_TEXT(card, 2, "ckirberr");
 796                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
 797                 if (intparm == QETH_RCD_PARM) {
 798                         if (card && (card->data.ccwdev == cdev)) {
 799                                 card->data.state = CH_STATE_DOWN;
 800                                 wake_up(&card->wait_q);
 801                         }
 802                 }
 803                 break;
 804         default:
 805                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 806                         dev_name(&cdev->dev), PTR_ERR(irb));
 807                 QETH_CARD_TEXT(card, 2, "ckirberr");
 808                 QETH_CARD_TEXT(card, 2, "  rc???");
 809         }
 810         return PTR_ERR(irb);
 811 }
 812
 813 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 814                 struct irb *irb)
 815 {
 816         int rc;
 817         int cstat, dstat;
 818         struct qeth_cmd_buffer *buffer;
 819         struct qeth_channel *channel;
 820         struct qeth_card *card;
 821         struct qeth_cmd_buffer *iob;
 822         __u8 index;
 823
 824         if (__qeth_check_irb_error(cdev, intparm, irb))
 825                 return;
 826         cstat = irb->scsw.cmd.cstat;
 827         dstat = irb->scsw.cmd.dstat;
 828
 829         card = CARD_FROM_CDEV(cdev);
 830         if (!card)
 831                 return;
 832
 833         QETH_CARD_TEXT(card, 5, "irq");
 834
 835         if (card->read.ccwdev == cdev) {
 836                 channel = &card->read;
 837                 QETH_CARD_TEXT(card, 5, "read");
 838         } else if (card->write.ccwdev == cdev) {
 839                 channel = &card->write;
 840                 QETH_CARD_TEXT(card, 5, "write");
 841         } else {
 842                 channel = &card->data;
 843                 QETH_CARD_TEXT(card, 5, "data");
 844         }
 845         atomic_set(&channel->irq_pending, 0);
 846
 847         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 848                 channel->state = CH_STATE_STOPPED;
 849
 850         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 851                 channel->state = CH_STATE_HALTED;
 852
 853         /*let's wake up immediately on data channel*/
 854         if ((channel == &card->data) && (intparm != 0) &&
 855             (intparm != QETH_RCD_PARM))
 856                 goto out;
 857
 858         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 859                 QETH_CARD_TEXT(card, 6, "clrchpar");
 860                 /* we don't have to handle this further */
 861                 intparm = 0;
 862         }
 863         if (intparm == QETH_HALT_CHANNEL_PARM) {
 864                 QETH_CARD_TEXT(card, 6, "hltchpar");
 865                 /* we don't have to handle this further */
 866                 intparm = 0;
 867         }
 868         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 869             (dstat & DEV_STAT_UNIT_CHECK) ||
 870             (cstat)) {
 871                 if (irb->esw.esw0.erw.cons) {
 872                         dev_warn(&channel->ccwdev->dev,
 873                                 "The qeth device driver failed to recover "
 874                                 "an error on the device\n");
 875                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 876                                 "0x%X dstat 0x%X\n",
 877                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 878                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 879                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 880                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 881                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 882                 }
 883                 if (intparm == QETH_RCD_PARM) {
 884                         channel->state = CH_STATE_DOWN;
 885                         goto out;
 886                 }
 887                 rc = qeth_get_problem(cdev, irb);
 888                 if (rc) {
 889                         qeth_clear_ipacmd_list(card);
 890                         qeth_schedule_recovery(card);
 891                         goto out;
 892                 }
 893         }
 894
 895         if (intparm == QETH_RCD_PARM) {
 896                 channel->state = CH_STATE_RCD_DONE;
 897                 goto out;
 898         }
 899         if (intparm) {
 900                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 901                 buffer->state = BUF_STATE_PROCESSED;
 902         }
 903         if (channel == &card->data)
 904                 return;
 905         if (channel == &card->read &&
 906             channel->state == CH_STATE_UP)
 907                 qeth_issue_next_read(card);
 908
 909         iob = channel->iob;
 910         index = channel->buf_no;
 911         while (iob[index].state == BUF_STATE_PROCESSED) {
 912                 if (iob[index].callback != NULL)
 913                         iob[index].callback(channel, iob + index);
 914
 915                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 916         }
 917         channel->buf_no = index;
 918 out:
 919         wake_up(&card->wait_q);
 920         return;
 921 }
 922
 923 static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 924                  struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb)
 925 {
 926         int i;
 927         struct sk_buff *skb;
 928
 929         /* is PCI flag set on buffer? */
 930         if (buf->buffer->element[0].flags & 0x40)
 931                 atomic_dec(&queue->set_pci_flags_count);
 932
 933         if (!qeth_skip_skb) {
 934                 skb = skb_dequeue(&buf->skb_list);
 935                 while (skb) {
 936                         atomic_dec(&skb->users);
 937                         dev_kfree_skb_any(skb);
 938                         skb = skb_dequeue(&buf->skb_list);
 939                 }
 940         }
 941         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 942                 if (buf->buffer->element[i].addr && buf->is_header[i])
 943                         kmem_cache_free(qeth_core_header_cache,
 944                                 buf->buffer->element[i].addr);
 945                 buf->is_header[i] = 0;
 946                 buf->buffer->element[i].length = 0;
 947                 buf->buffer->element[i].addr = NULL;
 948                 buf->buffer->element[i].flags = 0;
 949         }
 950         buf->buffer->element[15].flags = 0;
 951         buf->next_element_to_fill = 0;
 952         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 953 }
 954
 955 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 956                 struct qeth_qdio_out_buffer *buf)
 957 {
 958         __qeth_clear_output_buffer(queue, buf, 0);
 959 }
 960
 961 void qeth_clear_qdio_buffers(struct qeth_card *card)
 962 {
 963         int i, j;
 964
 965         QETH_CARD_TEXT(card, 2, "clearqdbf");
 966         /* clear outbound buffers to free skbs */
 967         for (i = 0; i < card->qdio.no_out_queues; ++i)
 968                 if (card->qdio.out_qs[i]) {
 969                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 970                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 971                                                 &card->qdio.out_qs[i]->bufs[j]);
 972                 }
 973 }
 974 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 975
 976 static void qeth_free_buffer_pool(struct qeth_card *card)
 977 {
 978         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 979         int i = 0;
 980         QETH_CARD_TEXT(card, 5, "freepool");
 981         list_for_each_entry_safe(pool_entry, tmp,
 982                                  &card->qdio.init_pool.entry_list, init_list){
 983                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 984                         free_page((unsigned long)pool_entry->elements[i]);
 985                 list_del(&pool_entry->init_list);
 986                 kfree(pool_entry);
 987         }
 988 }
 989
 990 static void qeth_free_qdio_buffers(struct qeth_card *card)
 991 {
 992         int i, j;
 993
 994         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 995                 QETH_QDIO_UNINITIALIZED)
 996                 return;
 997         kfree(card->qdio.in_q);
 998         card->qdio.in_q = NULL;
 999         /* inbound buffer pool */
1000         qeth_free_buffer_pool(card);
1001         /* free outbound qdio_qs */
1002         if (card->qdio.out_qs) {
1003                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1004                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1005                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
1006                                                 &card->qdio.out_qs[i]->bufs[j]);
1007                         kfree(card->qdio.out_qs[i]);
1008                 }
1009                 kfree(card->qdio.out_qs);
1010                 card->qdio.out_qs = NULL;
1011         }
1012 }
1013
1014 static void qeth_clean_channel(struct qeth_channel *channel)
1015 {
1016         int cnt;
1017
1018         QETH_DBF_TEXT(SETUP, 2, "freech");
1019         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1020                 kfree(channel->iob[cnt].data);
1021 }
1022
1023 static void qeth_get_channel_path_desc(struct qeth_card *card)
1024 {
1025         struct ccw_device *ccwdev;
1026         struct channelPath_dsc {
1027                 u8 flags;
1028                 u8 lsn;
1029                 u8 desc;
1030                 u8 chpid;
1031                 u8 swla;
1032                 u8 zeroes;
1033                 u8 chla;
1034                 u8 chpp;
1035         } *chp_dsc;
1036
1037         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1038
1039         ccwdev = card->data.ccwdev;
1040         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1041         if (chp_dsc != NULL) {
1042                 /* CHPP field bit 6 == 1 -> single queue */
1043                 if ((chp_dsc->chpp & 0x02) == 0x02)
1044                         card->qdio.no_out_queues = 1;
1045                 card->info.func_level = 0x4100 + chp_dsc->desc;
1046                 kfree(chp_dsc);
1047         }
1048         if (card->qdio.no_out_queues == 1) {
1049                 card->qdio.default_out_queue = 0;
1050                 dev_info(&card->gdev->dev,
1051                         "Priority Queueing not supported\n");
1052         }
1053         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1054         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1055         return;
1056 }
1057
1058 static void qeth_init_qdio_info(struct qeth_card *card)
1059 {
1060         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1061         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1062         /* inbound */
1063         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1064         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1065         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1066         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1067         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1068 }
1069
1070 static void qeth_set_intial_options(struct qeth_card *card)
1071 {
1072         card->options.route4.type = NO_ROUTER;
1073         card->options.route6.type = NO_ROUTER;
1074         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1075         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1076         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1077         card->options.fake_broadcast = 0;
1078         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1079         card->options.performance_stats = 0;
1080         card->options.rx_sg_cb = QETH_RX_SG_CB;
1081         card->options.isolation = ISOLATION_MODE_NONE;
1082 }
1083
1084 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1085 {
1086         unsigned long flags;
1087         int rc = 0;
1088
1089         spin_lock_irqsave(&card->thread_mask_lock, flags);
1090         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1091                         (u8) card->thread_start_mask,
1092                         (u8) card->thread_allowed_mask,
1093                         (u8) card->thread_running_mask);
1094         rc = (card->thread_start_mask & thread);
1095         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1096         return rc;
1097 }
1098
1099 static void qeth_start_kernel_thread(struct work_struct *work)
1100 {
1101         struct qeth_card *card = container_of(work, struct qeth_card,
1102                                         kernel_thread_starter);
1103         QETH_CARD_TEXT(card , 2, "strthrd");
1104
1105         if (card->read.state != CH_STATE_UP &&
1106             card->write.state != CH_STATE_UP)
1107                 return;
1108         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1109                 kthread_run(card->discipline.recover, (void *) card,
1110                                 "qeth_recover");
1111 }
1112
1113 static int qeth_setup_card(struct qeth_card *card)
1114 {
1115
1116         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1117         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1118
1119         card->read.state  = CH_STATE_DOWN;
1120         card->write.state = CH_STATE_DOWN;
1121         card->data.state  = CH_STATE_DOWN;
1122         card->state = CARD_STATE_DOWN;
1123         card->lan_online = 0;
1124         card->use_hard_stop = 0;
1125         card->dev = NULL;
1126         spin_lock_init(&card->vlanlock);
1127         spin_lock_init(&card->mclock);
1128         card->vlangrp = NULL;
1129         spin_lock_init(&card->lock);
1130         spin_lock_init(&card->ip_lock);
1131         spin_lock_init(&card->thread_mask_lock);
1132         mutex_init(&card->conf_mutex);
1133         card->thread_start_mask = 0;
1134         card->thread_allowed_mask = 0;
1135         card->thread_running_mask = 0;
1136         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1137         INIT_LIST_HEAD(&card->ip_list);
1138         INIT_LIST_HEAD(card->ip_tbd_list);
1139         INIT_LIST_HEAD(&card->cmd_waiter_list);
1140         init_waitqueue_head(&card->wait_q);
1141         /* intial options */
1142         qeth_set_intial_options(card);
1143         /* IP address takeover */
1144         INIT_LIST_HEAD(&card->ipato.entries);
1145         card->ipato.enabled = 0;
1146         card->ipato.invert4 = 0;
1147         card->ipato.invert6 = 0;
1148         /* init QDIO stuff */
1149         qeth_init_qdio_info(card);
1150         return 0;
1151 }
1152
1153 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1154 {
1155         struct qeth_card *card = container_of(slr, struct qeth_card,
1156                                         qeth_service_level);
1157         if (card->info.mcl_level[0])
1158                 seq_printf(m, "qeth: %s firmware level %s\n",
1159                         CARD_BUS_ID(card), card->info.mcl_level);
1160 }
1161
1162 static struct qeth_card *qeth_alloc_card(void)
1163 {
1164         struct qeth_card *card;
1165
1166         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1167         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1168         if (!card)
1169                 goto out;
1170         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1171         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1172         if (!card->ip_tbd_list) {
1173                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1174                 goto out_card;
1175         }
1176         if (qeth_setup_channel(&card->read))
1177                 goto out_ip;
1178         if (qeth_setup_channel(&card->write))
1179                 goto out_channel;
1180         card->options.layer2 = -1;
1181         card->qeth_service_level.seq_print = qeth_core_sl_print;
1182         register_service_level(&card->qeth_service_level);
1183         return card;
1184
1185 out_channel:
1186         qeth_clean_channel(&card->read);
1187 out_ip:
1188         kfree(card->ip_tbd_list);
1189 out_card:
1190         kfree(card);
1191 out:
1192         return NULL;
1193 }
1194
1195 static int qeth_determine_card_type(struct qeth_card *card)
1196 {
1197         int i = 0;
1198
1199         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1200
1201         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1202         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1203         while (known_devices[i][QETH_DEV_MODEL_IND]) {
1204                 if ((CARD_RDEV(card)->id.dev_type ==
1205                                 known_devices[i][QETH_DEV_TYPE_IND]) &&
1206                     (CARD_RDEV(card)->id.dev_model ==
1207                                 known_devices[i][QETH_DEV_MODEL_IND])) {
1208                         card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1209                         card->qdio.no_out_queues =
1210                                 known_devices[i][QETH_QUEUE_NO_IND];
1211                         card->info.is_multicast_different =
1212                                 known_devices[i][QETH_MULTICAST_IND];
1213                         qeth_get_channel_path_desc(card);
1214                         return 0;
1215                 }
1216                 i++;
1217         }
1218         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1219         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1220                 "unknown type\n");
1221         return -ENOENT;
1222 }
1223
1224 static int qeth_clear_channel(struct qeth_channel *channel)
1225 {
1226         unsigned long flags;
1227         struct qeth_card *card;
1228         int rc;
1229
1230         card = CARD_FROM_CDEV(channel->ccwdev);
1231         QETH_CARD_TEXT(card, 3, "clearch");
1232         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1233         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1234         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1235
1236         if (rc)
1237                 return rc;
1238         rc = wait_event_interruptible_timeout(card->wait_q,
1239                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1240         if (rc == -ERESTARTSYS)
1241                 return rc;
1242         if (channel->state != CH_STATE_STOPPED)
1243                 return -ETIME;
1244         channel->state = CH_STATE_DOWN;
1245         return 0;
1246 }
1247
1248 static int qeth_halt_channel(struct qeth_channel *channel)
1249 {
1250         unsigned long flags;
1251         struct qeth_card *card;
1252         int rc;
1253
1254         card = CARD_FROM_CDEV(channel->ccwdev);
1255         QETH_CARD_TEXT(card, 3, "haltch");
1256         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1257         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1258         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1259
1260         if (rc)
1261                 return rc;
1262         rc = wait_event_interruptible_timeout(card->wait_q,
1263                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1264         if (rc == -ERESTARTSYS)
1265                 return rc;
1266         if (channel->state != CH_STATE_HALTED)
1267                 return -ETIME;
1268         return 0;
1269 }
1270
1271 static int qeth_halt_channels(struct qeth_card *card)
1272 {
1273         int rc1 = 0, rc2 = 0, rc3 = 0;
1274
1275         QETH_CARD_TEXT(card, 3, "haltchs");
1276         rc1 = qeth_halt_channel(&card->read);
1277         rc2 = qeth_halt_channel(&card->write);
1278         rc3 = qeth_halt_channel(&card->data);
1279         if (rc1)
1280                 return rc1;
1281         if (rc2)
1282                 return rc2;
1283         return rc3;
1284 }
1285
1286 static int qeth_clear_channels(struct qeth_card *card)
1287 {
1288         int rc1 = 0, rc2 = 0, rc3 = 0;
1289
1290         QETH_CARD_TEXT(card, 3, "clearchs");
1291         rc1 = qeth_clear_channel(&card->read);
1292         rc2 = qeth_clear_channel(&card->write);
1293         rc3 = qeth_clear_channel(&card->data);
1294         if (rc1)
1295                 return rc1;
1296         if (rc2)
1297                 return rc2;
1298         return rc3;
1299 }
1300
1301 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1302 {
1303         int rc = 0;
1304
1305         QETH_CARD_TEXT(card, 3, "clhacrd");
1306
1307         if (halt)
1308                 rc = qeth_halt_channels(card);
1309         if (rc)
1310                 return rc;
1311         return qeth_clear_channels(card);
1312 }
1313
1314 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1315 {
1316         int rc = 0;
1317
1318         QETH_CARD_TEXT(card, 3, "qdioclr");
1319         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1320                 QETH_QDIO_CLEANING)) {
1321         case QETH_QDIO_ESTABLISHED:
1322                 if (card->info.type == QETH_CARD_TYPE_IQD)
1323                         rc = qdio_shutdown(CARD_DDEV(card),
1324                                 QDIO_FLAG_CLEANUP_USING_HALT);
1325                 else
1326                         rc = qdio_shutdown(CARD_DDEV(card),
1327                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1328                 if (rc)
1329                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1330                 qdio_free(CARD_DDEV(card));
1331                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1332                 break;
1333         case QETH_QDIO_CLEANING:
1334                 return rc;
1335         default:
1336                 break;
1337         }
1338         rc = qeth_clear_halt_card(card, use_halt);
1339         if (rc)
1340                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1341         card->state = CARD_STATE_DOWN;
1342         return rc;
1343 }
1344 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1345
1346 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1347                                int *length)
1348 {
1349         struct ciw *ciw;
1350         char *rcd_buf;
1351         int ret;
1352         struct qeth_channel *channel = &card->data;
1353         unsigned long flags;
1354
1355         /*
1356          * scan for RCD command in extended SenseID data
1357          */
1358         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1359         if (!ciw || ciw->cmd == 0)
1360                 return -EOPNOTSUPP;
1361         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1362         if (!rcd_buf)
1363                 return -ENOMEM;
1364
1365         channel->ccw.cmd_code = ciw->cmd;
1366         channel->ccw.cda = (__u32) __pa(rcd_buf);
1367         channel->ccw.count = ciw->count;
1368         channel->ccw.flags = CCW_FLAG_SLI;
1369         channel->state = CH_STATE_RCD;
1370         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1371         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1372                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1373                                        QETH_RCD_TIMEOUT);
1374         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1375         if (!ret)
1376                 wait_event(card->wait_q,
1377                            (channel->state == CH_STATE_RCD_DONE ||
1378                             channel->state == CH_STATE_DOWN));
1379         if (channel->state == CH_STATE_DOWN)
1380                 ret = -EIO;
1381         else
1382                 channel->state = CH_STATE_DOWN;
1383         if (ret) {
1384                 kfree(rcd_buf);
1385                 *buffer = NULL;
1386                 *length = 0;
1387         } else {
1388                 *length = ciw->count;
1389                 *buffer = rcd_buf;
1390         }
1391         return ret;
1392 }
1393
1394 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1395 {
1396         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1397         card->info.chpid = prcd[30];
1398         card->info.unit_addr2 = prcd[31];
1399         card->info.cula = prcd[63];
1400         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1401                                (prcd[0x11] == _ascebc['M']));
1402 }
1403
1404 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1405 {
1406         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1407
1408         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1409                 card->info.blkt.time_total = 250;
1410                 card->info.blkt.inter_packet = 5;
1411                 card->info.blkt.inter_packet_jumbo = 15;
1412         } else {
1413                 card->info.blkt.time_total = 0;
1414                 card->info.blkt.inter_packet = 0;
1415                 card->info.blkt.inter_packet_jumbo = 0;
1416         }
1417 }
1418
1419 static void qeth_init_tokens(struct qeth_card *card)
1420 {
1421         card->token.issuer_rm_w = 0x00010103UL;
1422         card->token.cm_filter_w = 0x00010108UL;
1423         card->token.cm_connection_w = 0x0001010aUL;
1424         card->token.ulp_filter_w = 0x0001010bUL;
1425         card->token.ulp_connection_w = 0x0001010dUL;
1426 }
1427
1428 static void qeth_init_func_level(struct qeth_card *card)
1429 {
1430         switch (card->info.type) {
1431         case QETH_CARD_TYPE_IQD:
1432                 if (card->ipato.enabled)
1433                         card->info.func_level =
1434                                 QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1435                 else
1436                         card->info.func_level =
1437                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1438                 break;
1439         case QETH_CARD_TYPE_OSD:
1440                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1441                 break;
1442         default:
1443                 break;
1444         }
1445 }
1446
1447 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1448                 void (*idx_reply_cb)(struct qeth_channel *,
1449                         struct qeth_cmd_buffer *))
1450 {
1451         struct qeth_cmd_buffer *iob;
1452         unsigned long flags;
1453         int rc;
1454         struct qeth_card *card;
1455
1456         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1457         card = CARD_FROM_CDEV(channel->ccwdev);
1458         iob = qeth_get_buffer(channel);
1459         iob->callback = idx_reply_cb;
1460         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1461         channel->ccw.count = QETH_BUFSIZE;
1462         channel->ccw.cda = (__u32) __pa(iob->data);
1463
1464         wait_event(card->wait_q,
1465                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1466         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1467         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1468         rc = ccw_device_start(channel->ccwdev,
1469                               &channel->ccw, (addr_t) iob, 0, 0);
1470         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1471
1472         if (rc) {
1473                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1474                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1475                 atomic_set(&channel->irq_pending, 0);
1476                 wake_up(&card->wait_q);
1477                 return rc;
1478         }
1479         rc = wait_event_interruptible_timeout(card->wait_q,
1480                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1481         if (rc == -ERESTARTSYS)
1482                 return rc;
1483         if (channel->state != CH_STATE_UP) {
1484                 rc = -ETIME;
1485                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1486                 qeth_clear_cmd_buffers(channel);
1487         } else
1488                 rc = 0;
1489         return rc;
1490 }
1491
1492 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1493                 void (*idx_reply_cb)(struct qeth_channel *,
1494                         struct qeth_cmd_buffer *))
1495 {
1496         struct qeth_card *card;
1497         struct qeth_cmd_buffer *iob;
1498         unsigned long flags;
1499         __u16 temp;
1500         __u8 tmp;
1501         int rc;
1502         struct ccw_dev_id temp_devid;
1503
1504         card = CARD_FROM_CDEV(channel->ccwdev);
1505
1506         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1507
1508         iob = qeth_get_buffer(channel);
1509         iob->callback = idx_reply_cb;
1510         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1511         channel->ccw.count = IDX_ACTIVATE_SIZE;
1512         channel->ccw.cda = (__u32) __pa(iob->data);
1513         if (channel == &card->write) {
1514                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1515                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1516                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1517                 card->seqno.trans_hdr++;
1518         } else {
1519                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1520                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1521                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1522         }
1523         tmp = ((__u8)card->info.portno) | 0x80;
1524         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1525         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1526                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1527         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1528                &card->info.func_level, sizeof(__u16));
1529         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1530         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1531         temp = (card->info.cula << 8) + card->info.unit_addr2;
1532         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1533
1534         wait_event(card->wait_q,
1535                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1536         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1537         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1538         rc = ccw_device_start(channel->ccwdev,
1539                               &channel->ccw, (addr_t) iob, 0, 0);
1540         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1541
1542         if (rc) {
1543                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1544                         rc);
1545                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1546                 atomic_set(&channel->irq_pending, 0);
1547                 wake_up(&card->wait_q);
1548                 return rc;
1549         }
1550         rc = wait_event_interruptible_timeout(card->wait_q,
1551                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1552         if (rc == -ERESTARTSYS)
1553                 return rc;
1554         if (channel->state != CH_STATE_ACTIVATING) {
1555                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1556                         " failed to recover an error on the device\n");
1557                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1558                         dev_name(&channel->ccwdev->dev));
1559                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1560                 qeth_clear_cmd_buffers(channel);
1561                 return -ETIME;
1562         }
1563         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1564 }
1565
1566 static int qeth_peer_func_level(int level)
1567 {
1568         if ((level & 0xff) == 8)
1569                 return (level & 0xff) + 0x400;
1570         if (((level >> 8) & 3) == 1)
1571                 return (level & 0xff) + 0x200;
1572         return level;
1573 }
1574
1575 static void qeth_idx_write_cb(struct qeth_channel *channel,
1576                 struct qeth_cmd_buffer *iob)
1577 {
1578         struct qeth_card *card;
1579         __u16 temp;
1580
1581         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1582
1583         if (channel->state == CH_STATE_DOWN) {
1584                 channel->state = CH_STATE_ACTIVATING;
1585                 goto out;
1586         }
1587         card = CARD_FROM_CDEV(channel->ccwdev);
1588
1589         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1590                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1591                         dev_err(&card->write.ccwdev->dev,
1592                                 "The adapter is used exclusively by another "
1593                                 "host\n");
1594                 else
1595                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1596                                 " negative reply\n",
1597                                 dev_name(&card->write.ccwdev->dev));
1598                 goto out;
1599         }
1600         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1601         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1602                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1603                         "function level mismatch (sent: 0x%x, received: "
1604                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1605                         card->info.func_level, temp);
1606                 goto out;
1607         }
1608         channel->state = CH_STATE_UP;
1609 out:
1610         qeth_release_buffer(channel, iob);
1611 }
1612
1613 static void qeth_idx_read_cb(struct qeth_channel *channel,
1614                 struct qeth_cmd_buffer *iob)
1615 {
1616         struct qeth_card *card;
1617         __u16 temp;
1618
1619         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1620         if (channel->state == CH_STATE_DOWN) {
1621                 channel->state = CH_STATE_ACTIVATING;
1622                 goto out;
1623         }
1624
1625         card = CARD_FROM_CDEV(channel->ccwdev);
1626         if (qeth_check_idx_response(card, iob->data))
1627                         goto out;
1628
1629         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1630                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1631                 case QETH_IDX_ACT_ERR_EXCL:
1632                         dev_err(&card->write.ccwdev->dev,
1633                                 "The adapter is used exclusively by another "
1634                                 "host\n");
1635                         break;
1636                 case QETH_IDX_ACT_ERR_AUTH:
1637                         dev_err(&card->read.ccwdev->dev,
1638                                 "Setting the device online failed because of "
1639                                 "insufficient LPAR authorization\n");
1640                         break;
1641                 default:
1642                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1643                                 " negative reply\n",
1644                                 dev_name(&card->read.ccwdev->dev));
1645                 }
1646                 goto out;
1647         }
1648
1649 /**
1650  *  * temporary fix for microcode bug
1651  *   * to revert it,replace OR by AND
1652  *    */
1653         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1654              (card->info.type == QETH_CARD_TYPE_OSD))
1655                 card->info.portname_required = 1;
1656
1657         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1658         if (temp != qeth_peer_func_level(card->info.func_level)) {
1659                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1660                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1661                         dev_name(&card->read.ccwdev->dev),
1662                         card->info.func_level, temp);
1663                 goto out;
1664         }
1665         memcpy(&card->token.issuer_rm_r,
1666                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1667                QETH_MPC_TOKEN_LENGTH);
1668         memcpy(&card->info.mcl_level[0],
1669                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1670         channel->state = CH_STATE_UP;
1671 out:
1672         qeth_release_buffer(channel, iob);
1673 }
1674
1675 void qeth_prepare_control_data(struct qeth_card *card, int len,
1676                 struct qeth_cmd_buffer *iob)
1677 {
1678         qeth_setup_ccw(&card->write, iob->data, len);
1679         iob->callback = qeth_release_buffer;
1680
1681         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1682                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1683         card->seqno.trans_hdr++;
1684         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1685                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1686         card->seqno.pdu_hdr++;
1687         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1688                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1689         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1690 }
1691 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1692
1693 int qeth_send_control_data(struct qeth_card *card, int len,
1694                 struct qeth_cmd_buffer *iob,
1695                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1696                         unsigned long),
1697                 void *reply_param)
1698 {
1699         int rc;
1700         unsigned long flags;
1701         struct qeth_reply *reply = NULL;
1702         unsigned long timeout, event_timeout;
1703         struct qeth_ipa_cmd *cmd;
1704
1705         QETH_CARD_TEXT(card, 2, "sendctl");
1706
1707         reply = qeth_alloc_reply(card);
1708         if (!reply) {
1709                 return -ENOMEM;
1710         }
1711         reply->callback = reply_cb;
1712         reply->param = reply_param;
1713         if (card->state == CARD_STATE_DOWN)
1714                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1715         else
1716                 reply->seqno = card->seqno.ipa++;
1717         init_waitqueue_head(&reply->wait_q);
1718         spin_lock_irqsave(&card->lock, flags);
1719         list_add_tail(&reply->list, &card->cmd_waiter_list);
1720         spin_unlock_irqrestore(&card->lock, flags);
1721         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1722
1723         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1724         qeth_prepare_control_data(card, len, iob);
1725
1726         if (IS_IPA(iob->data))
1727                 event_timeout = QETH_IPA_TIMEOUT;
1728         else
1729                 event_timeout = QETH_TIMEOUT;
1730         timeout = jiffies + event_timeout;
1731
1732         QETH_CARD_TEXT(card, 6, "noirqpnd");
1733         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1734         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1735                               (addr_t) iob, 0, 0);
1736         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1737         if (rc) {
1738                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1739                         "ccw_device_start rc = %i\n",
1740                         dev_name(&card->write.ccwdev->dev), rc);
1741                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1742                 spin_lock_irqsave(&card->lock, flags);
1743                 list_del_init(&reply->list);
1744                 qeth_put_reply(reply);
1745                 spin_unlock_irqrestore(&card->lock, flags);
1746                 qeth_release_buffer(iob->channel, iob);
1747                 atomic_set(&card->write.irq_pending, 0);
1748                 wake_up(&card->wait_q);
1749                 return rc;
1750         }
1751
1752         /* we have only one long running ipassist, since we can ensure
1753            process context of this command we can sleep */
1754         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1755         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1756             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1757                 if (!wait_event_timeout(reply->wait_q,
1758                     atomic_read(&reply->received), event_timeout))
1759                         goto time_err;
1760         } else {
1761                 while (!atomic_read(&reply->received)) {
1762                         if (time_after(jiffies, timeout))
1763                                 goto time_err;
1764                         cpu_relax();
1765                 };
1766         }
1767
1768         rc = reply->rc;
1769         qeth_put_reply(reply);
1770         return rc;
1771
1772 time_err:
1773         spin_lock_irqsave(&reply->card->lock, flags);
1774         list_del_init(&reply->list);
1775         spin_unlock_irqrestore(&reply->card->lock, flags);
1776         reply->rc = -ETIME;
1777         atomic_inc(&reply->received);
1778         wake_up(&reply->wait_q);
1779         rc = reply->rc;
1780         qeth_put_reply(reply);
1781         return rc;
1782 }
1783 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1784
1785 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1786                 unsigned long data)
1787 {
1788         struct qeth_cmd_buffer *iob;
1789
1790         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1791
1792         iob = (struct qeth_cmd_buffer *) data;
1793         memcpy(&card->token.cm_filter_r,
1794                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1795                QETH_MPC_TOKEN_LENGTH);
1796         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1797         return 0;
1798 }
1799
1800 static int qeth_cm_enable(struct qeth_card *card)
1801 {
1802         int rc;
1803         struct qeth_cmd_buffer *iob;
1804
1805         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1806
1807         iob = qeth_wait_for_buffer(&card->write);
1808         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1809         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1810                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1811         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1812                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1813
1814         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1815                                     qeth_cm_enable_cb, NULL);
1816         return rc;
1817 }
1818
1819 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1820                 unsigned long data)
1821 {
1822
1823         struct qeth_cmd_buffer *iob;
1824
1825         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1826
1827         iob = (struct qeth_cmd_buffer *) data;
1828         memcpy(&card->token.cm_connection_r,
1829                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1830                QETH_MPC_TOKEN_LENGTH);
1831         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1832         return 0;
1833 }
1834
1835 static int qeth_cm_setup(struct qeth_card *card)
1836 {
1837         int rc;
1838         struct qeth_cmd_buffer *iob;
1839
1840         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1841
1842         iob = qeth_wait_for_buffer(&card->write);
1843         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1844         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1845                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1846         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1847                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1848         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1849                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1850         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1851                                     qeth_cm_setup_cb, NULL);
1852         return rc;
1853
1854 }
1855
1856 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1857 {
1858         switch (card->info.type) {
1859         case QETH_CARD_TYPE_UNKNOWN:
1860                 return 1500;
1861         case QETH_CARD_TYPE_IQD:
1862                 return card->info.max_mtu;
1863         case QETH_CARD_TYPE_OSD:
1864                 switch (card->info.link_type) {
1865                 case QETH_LINK_TYPE_HSTR:
1866                 case QETH_LINK_TYPE_LANE_TR:
1867                         return 2000;
1868                 default:
1869                         return 1492;
1870                 }
1871         case QETH_CARD_TYPE_OSM:
1872         case QETH_CARD_TYPE_OSX:
1873                 return 1492;
1874         default:
1875                 return 1500;
1876         }
1877 }
1878
1879 static inline int qeth_get_max_mtu_for_card(int cardtype)
1880 {
1881         switch (cardtype) {
1882
1883         case QETH_CARD_TYPE_UNKNOWN:
1884         case QETH_CARD_TYPE_OSD:
1885         case QETH_CARD_TYPE_OSN:
1886         case QETH_CARD_TYPE_OSM:
1887         case QETH_CARD_TYPE_OSX:
1888                 return 61440;
1889         case QETH_CARD_TYPE_IQD:
1890                 return 57344;
1891         default:
1892                 return 1500;
1893         }
1894 }
1895
1896 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1897 {
1898         switch (cardtype) {
1899         case QETH_CARD_TYPE_IQD:
1900                 return 1;
1901         default:
1902                 return 0;
1903         }
1904 }
1905
1906 static inline int qeth_get_mtu_outof_framesize(int framesize)
1907 {
1908         switch (framesize) {
1909         case 0x4000:
1910                 return 8192;
1911         case 0x6000:
1912                 return 16384;
1913         case 0xa000:
1914                 return 32768;
1915         case 0xffff:
1916                 return 57344;
1917         default:
1918                 return 0;
1919         }
1920 }
1921
1922 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1923 {
1924         switch (card->info.type) {
1925         case QETH_CARD_TYPE_OSD:
1926         case QETH_CARD_TYPE_OSM:
1927         case QETH_CARD_TYPE_OSX:
1928                 return ((mtu >= 576) && (mtu <= 61440));
1929         case QETH_CARD_TYPE_IQD:
1930                 return ((mtu >= 576) &&
1931                         (mtu <= card->info.max_mtu + 4096 - 32));
1932         case QETH_CARD_TYPE_OSN:
1933         case QETH_CARD_TYPE_UNKNOWN:
1934         default:
1935                 return 1;
1936         }
1937 }
1938
1939 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1940                 unsigned long data)
1941 {
1942
1943         __u16 mtu, framesize;
1944         __u16 len;
1945         __u8 link_type;
1946         struct qeth_cmd_buffer *iob;
1947
1948         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1949
1950         iob = (struct qeth_cmd_buffer *) data;
1951         memcpy(&card->token.ulp_filter_r,
1952                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1953                QETH_MPC_TOKEN_LENGTH);
1954         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1955                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1956                 mtu = qeth_get_mtu_outof_framesize(framesize);
1957                 if (!mtu) {
1958                         iob->rc = -EINVAL;
1959                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1960                         return 0;
1961                 }
1962                 card->info.max_mtu = mtu;
1963                 card->info.initial_mtu = mtu;
1964                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1965         } else {
1966                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1967                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1968                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1969         }
1970
1971         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1972         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1973                 memcpy(&link_type,
1974                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1975                 card->info.link_type = link_type;
1976         } else
1977                 card->info.link_type = 0;
1978         QETH_DBF_TEXT_(SETUP, 2, "link%d", link_type);
1979         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1980         return 0;
1981 }
1982
1983 static int qeth_ulp_enable(struct qeth_card *card)
1984 {
1985         int rc;
1986         char prot_type;
1987         struct qeth_cmd_buffer *iob;
1988
1989         /*FIXME: trace view callbacks*/
1990         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1991
1992         iob = qeth_wait_for_buffer(&card->write);
1993         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1994
1995         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1996                 (__u8) card->info.portno;
1997         if (card->options.layer2)
1998                 if (card->info.type == QETH_CARD_TYPE_OSN)
1999                         prot_type = QETH_PROT_OSN2;
2000                 else
2001                         prot_type = QETH_PROT_LAYER2;
2002         else
2003                 prot_type = QETH_PROT_TCPIP;
2004
2005         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2006         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2007                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2008         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2009                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2010         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2011                card->info.portname, 9);
2012         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2013                                     qeth_ulp_enable_cb, NULL);
2014         return rc;
2015
2016 }
2017
2018 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2019                 unsigned long data)
2020 {
2021         struct qeth_cmd_buffer *iob;
2022         int rc = 0;
2023
2024         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2025
2026         iob = (struct qeth_cmd_buffer *) data;
2027         memcpy(&card->token.ulp_connection_r,
2028                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2029                QETH_MPC_TOKEN_LENGTH);
2030         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2031                      3)) {
2032                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2033                 dev_err(&card->gdev->dev, "A connection could not be "
2034                         "established because of an OLM limit\n");
2035                 rc = -EMLINK;
2036         }
2037         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2038         return rc;
2039 }
2040
2041 static int qeth_ulp_setup(struct qeth_card *card)
2042 {
2043         int rc;
2044         __u16 temp;
2045         struct qeth_cmd_buffer *iob;
2046         struct ccw_dev_id dev_id;
2047
2048         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2049
2050         iob = qeth_wait_for_buffer(&card->write);
2051         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2052
2053         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2054                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2055         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2056                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2057         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2058                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2059
2060         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2061         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2062         temp = (card->info.cula << 8) + card->info.unit_addr2;
2063         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2064         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2065                                     qeth_ulp_setup_cb, NULL);
2066         return rc;
2067 }
2068
2069 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2070 {
2071         int i, j;
2072
2073         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2074
2075         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2076                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2077                 return 0;
2078
2079         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2080                                   GFP_KERNEL);
2081         if (!card->qdio.in_q)
2082                 goto out_nomem;
2083         QETH_DBF_TEXT(SETUP, 2, "inq");
2084         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2085         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2086         /* give inbound qeth_qdio_buffers their qdio_buffers */
2087         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2088                 card->qdio.in_q->bufs[i].buffer =
2089                         &card->qdio.in_q->qdio_bufs[i];
2090         /* inbound buffer pool */
2091         if (qeth_alloc_buffer_pool(card))
2092                 goto out_freeinq;
2093         /* outbound */
2094         card->qdio.out_qs =
2095                 kmalloc(card->qdio.no_out_queues *
2096                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2097         if (!card->qdio.out_qs)
2098                 goto out_freepool;
2099         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2100                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2101                                                GFP_KERNEL);
2102                 if (!card->qdio.out_qs[i])
2103                         goto out_freeoutq;
2104                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2105                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2106                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2107                 card->qdio.out_qs[i]->queue_no = i;
2108                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2109                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2110                         card->qdio.out_qs[i]->bufs[j].buffer =
2111                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2112                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2113                                             skb_list);
2114                         lockdep_set_class(
2115                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2116                                 &qdio_out_skb_queue_key);
2117                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2118                 }
2119         }
2120         return 0;
2121
2122 out_freeoutq:
2123         while (i > 0)
2124                 kfree(card->qdio.out_qs[--i]);
2125         kfree(card->qdio.out_qs);
2126         card->qdio.out_qs = NULL;
2127 out_freepool:
2128         qeth_free_buffer_pool(card);
2129 out_freeinq:
2130         kfree(card->qdio.in_q);
2131         card->qdio.in_q = NULL;
2132 out_nomem:
2133         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2134         return -ENOMEM;
2135 }
2136
2137 static void qeth_create_qib_param_field(struct qeth_card *card,
2138                 char *param_field)
2139 {
2140
2141         param_field[0] = _ascebc['P'];
2142         param_field[1] = _ascebc['C'];
2143         param_field[2] = _ascebc['I'];
2144         param_field[3] = _ascebc['T'];
2145         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2146         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2147         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2148 }
2149
2150 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2151                 char *param_field)
2152 {
2153         param_field[16] = _ascebc['B'];
2154         param_field[17] = _ascebc['L'];
2155         param_field[18] = _ascebc['K'];
2156         param_field[19] = _ascebc['T'];
2157         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2158         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2159         *((unsigned int *) (&param_field[28])) =
2160                 card->info.blkt.inter_packet_jumbo;
2161 }
2162
2163 static int qeth_qdio_activate(struct qeth_card *card)
2164 {
2165         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2166         return qdio_activate(CARD_DDEV(card));
2167 }
2168
2169 static int qeth_dm_act(struct qeth_card *card)
2170 {
2171         int rc;
2172         struct qeth_cmd_buffer *iob;
2173
2174         QETH_DBF_TEXT(SETUP, 2, "dmact");
2175
2176         iob = qeth_wait_for_buffer(&card->write);
2177         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2178
2179         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2180                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2181         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2182                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2183         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2184         return rc;
2185 }
2186
2187 static int qeth_mpc_initialize(struct qeth_card *card)
2188 {
2189         int rc;
2190
2191         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2192
2193         rc = qeth_issue_next_read(card);
2194         if (rc) {
2195                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2196                 return rc;
2197         }
2198         rc = qeth_cm_enable(card);
2199         if (rc) {
2200                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2201                 goto out_qdio;
2202         }
2203         rc = qeth_cm_setup(card);
2204         if (rc) {
2205                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2206                 goto out_qdio;
2207         }
2208         rc = qeth_ulp_enable(card);
2209         if (rc) {
2210                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2211                 goto out_qdio;
2212         }
2213         rc = qeth_ulp_setup(card);
2214         if (rc) {
2215                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2216                 goto out_qdio;
2217         }
2218         rc = qeth_alloc_qdio_buffers(card);
2219         if (rc) {
2220                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2221                 goto out_qdio;
2222         }
2223         rc = qeth_qdio_establish(card);
2224         if (rc) {
2225                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2226                 qeth_free_qdio_buffers(card);
2227                 goto out_qdio;
2228         }
2229         rc = qeth_qdio_activate(card);
2230         if (rc) {
2231                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2232                 goto out_qdio;
2233         }
2234         rc = qeth_dm_act(card);
2235         if (rc) {
2236                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2237                 goto out_qdio;
2238         }
2239
2240         return 0;
2241 out_qdio:
2242         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2243         return rc;
2244 }
2245
2246 static void qeth_print_status_with_portname(struct qeth_card *card)
2247 {
2248         char dbf_text[15];
2249         int i;
2250
2251         sprintf(dbf_text, "%s", card->info.portname + 1);
2252         for (i = 0; i < 8; i++)
2253                 dbf_text[i] =
2254                         (char) _ebcasc[(__u8) dbf_text[i]];
2255         dbf_text[8] = 0;
2256         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2257                "with link type %s (portname: %s)\n",
2258                qeth_get_cardname(card),
2259                (card->info.mcl_level[0]) ? " (level: " : "",
2260                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2261                (card->info.mcl_level[0]) ? ")" : "",
2262                qeth_get_cardname_short(card),
2263                dbf_text);
2264
2265 }
2266
2267 static void qeth_print_status_no_portname(struct qeth_card *card)
2268 {
2269         if (card->info.portname[0])
2270                 dev_info(&card->gdev->dev, "Device is a%s "
2271                        "card%s%s%s\nwith link type %s "
2272                        "(no portname needed by interface).\n",
2273                        qeth_get_cardname(card),
2274                        (card->info.mcl_level[0]) ? " (level: " : "",
2275                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2276                        (card->info.mcl_level[0]) ? ")" : "",
2277                        qeth_get_cardname_short(card));
2278         else
2279                 dev_info(&card->gdev->dev, "Device is a%s "
2280                        "card%s%s%s\nwith link type %s.\n",
2281                        qeth_get_cardname(card),
2282                        (card->info.mcl_level[0]) ? " (level: " : "",
2283                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2284                        (card->info.mcl_level[0]) ? ")" : "",
2285                        qeth_get_cardname_short(card));
2286 }
2287
2288 void qeth_print_status_message(struct qeth_card *card)
2289 {
2290         switch (card->info.type) {
2291         case QETH_CARD_TYPE_OSD:
2292         case QETH_CARD_TYPE_OSM:
2293         case QETH_CARD_TYPE_OSX:
2294                 /* VM will use a non-zero first character
2295                  * to indicate a HiperSockets like reporting
2296                  * of the level OSA sets the first character to zero
2297                  * */
2298                 if (!card->info.mcl_level[0]) {
2299                         sprintf(card->info.mcl_level, "%02x%02x",
2300                                 card->info.mcl_level[2],
2301                                 card->info.mcl_level[3]);
2302
2303                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2304                         break;
2305                 }
2306                 /* fallthrough */
2307         case QETH_CARD_TYPE_IQD:
2308                 if ((card->info.guestlan) ||
2309                     (card->info.mcl_level[0] & 0x80)) {
2310                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2311                                 card->info.mcl_level[0]];
2312                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2313                                 card->info.mcl_level[1]];
2314                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2315                                 card->info.mcl_level[2]];
2316                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2317                                 card->info.mcl_level[3]];
2318                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2319                 }
2320                 break;
2321         default:
2322                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2323         }
2324         if (card->info.portname_required)
2325                 qeth_print_status_with_portname(card);
2326         else
2327                 qeth_print_status_no_portname(card);
2328 }
2329 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2330
2331 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2332 {
2333         struct qeth_buffer_pool_entry *entry;
2334
2335         QETH_CARD_TEXT(card, 5, "inwrklst");
2336
2337         list_for_each_entry(entry,
2338                             &card->qdio.init_pool.entry_list, init_list) {
2339                 qeth_put_buffer_pool_entry(card, entry);
2340         }
2341 }
2342
2343 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2344                 struct qeth_card *card)
2345 {
2346         struct list_head *plh;
2347         struct qeth_buffer_pool_entry *entry;
2348         int i, free;
2349         struct page *page;
2350
2351         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2352                 return NULL;
2353
2354         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2355                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2356                 free = 1;
2357                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2358                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2359                                 free = 0;
2360                                 break;
2361                         }
2362                 }
2363                 if (free) {
2364                         list_del_init(&entry->list);
2365                         return entry;
2366                 }
2367         }
2368
2369         /* no free buffer in pool so take first one and swap pages */
2370         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2371                         struct qeth_buffer_pool_entry, list);
2372         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2373                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2374                         page = alloc_page(GFP_ATOMIC);
2375                         if (!page) {
2376                                 return NULL;
2377                         } else {
2378                                 free_page((unsigned long)entry->elements[i]);
2379                                 entry->elements[i] = page_address(page);
2380                                 if (card->options.performance_stats)
2381                                         card->perf_stats.sg_alloc_page_rx++;
2382                         }
2383                 }
2384         }
2385         list_del_init(&entry->list);
2386         return entry;
2387 }
2388
2389 static int qeth_init_input_buffer(struct qeth_card *card,
2390                 struct qeth_qdio_buffer *buf)
2391 {
2392         struct qeth_buffer_pool_entry *pool_entry;
2393         int i;
2394
2395         pool_entry = qeth_find_free_buffer_pool_entry(card);
2396         if (!pool_entry)
2397                 return 1;
2398
2399         /*
2400          * since the buffer is accessed only from the input_tasklet
2401          * there shouldn't be a need to synchronize; also, since we use
2402          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2403          * buffers
2404          */
2405
2406         buf->pool_entry = pool_entry;
2407         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2408                 buf->buffer->element[i].length = PAGE_SIZE;
2409                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2410                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2411                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2412                 else
2413                         buf->buffer->element[i].flags = 0;
2414         }
2415         return 0;
2416 }
2417
2418 int qeth_init_qdio_queues(struct qeth_card *card)
2419 {
2420         int i, j;
2421         int rc;
2422
2423         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2424
2425         /* inbound queue */
2426         memset(card->qdio.in_q->qdio_bufs, 0,
2427                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2428         qeth_initialize_working_pool_list(card);
2429         /*give only as many buffers to hardware as we have buffer pool entries*/
2430         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2431                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2432         card->qdio.in_q->next_buf_to_init =
2433                 card->qdio.in_buf_pool.buf_count - 1;
2434         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2435                      card->qdio.in_buf_pool.buf_count - 1);
2436         if (rc) {
2437                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2438                 return rc;
2439         }
2440         /* outbound queue */
2441         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2442                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2443                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2444                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2445                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2446                                         &card->qdio.out_qs[i]->bufs[j]);
2447                 }
2448                 card->qdio.out_qs[i]->card = card;
2449                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2450                 card->qdio.out_qs[i]->do_pack = 0;
2451                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2452                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2453                 atomic_set(&card->qdio.out_qs[i]->state,
2454                            QETH_OUT_Q_UNLOCKED);
2455         }
2456         return 0;
2457 }
2458 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2459
2460 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2461 {
2462         switch (link_type) {
2463         case QETH_LINK_TYPE_HSTR:
2464                 return 2;
2465         default:
2466                 return 1;
2467         }
2468 }
2469
2470 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2471                 struct qeth_ipa_cmd *cmd, __u8 command,
2472                 enum qeth_prot_versions prot)
2473 {
2474         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2475         cmd->hdr.command = command;
2476         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2477         cmd->hdr.seqno = card->seqno.ipa;
2478         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2479         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2480         if (card->options.layer2)
2481                 cmd->hdr.prim_version_no = 2;
2482         else
2483                 cmd->hdr.prim_version_no = 1;
2484         cmd->hdr.param_count = 1;
2485         cmd->hdr.prot_version = prot;
2486         cmd->hdr.ipa_supported = 0;
2487         cmd->hdr.ipa_enabled = 0;
2488 }
2489
2490 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2491                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2492 {
2493         struct qeth_cmd_buffer *iob;
2494         struct qeth_ipa_cmd *cmd;
2495
2496         iob = qeth_wait_for_buffer(&card->write);
2497         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2498         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2499
2500         return iob;
2501 }
2502 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2503
2504 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2505                 char prot_type)
2506 {
2507         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2508         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2509         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2510                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2511 }
2512 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2513
2514 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2515                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2516                         unsigned long),
2517                 void *reply_param)
2518 {
2519         int rc;
2520         char prot_type;
2521
2522         QETH_CARD_TEXT(card, 4, "sendipa");
2523
2524         if (card->options.layer2)
2525                 if (card->info.type == QETH_CARD_TYPE_OSN)
2526                         prot_type = QETH_PROT_OSN2;
2527                 else
2528                         prot_type = QETH_PROT_LAYER2;
2529         else
2530                 prot_type = QETH_PROT_TCPIP;
2531         qeth_prepare_ipa_cmd(card, iob, prot_type);
2532         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2533                                                 iob, reply_cb, reply_param);
2534         return rc;
2535 }
2536 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2537
2538 static int qeth_send_startstoplan(struct qeth_card *card,
2539                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2540 {
2541         int rc;
2542         struct qeth_cmd_buffer *iob;
2543
2544         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2545         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2546
2547         return rc;
2548 }
2549
2550 int qeth_send_startlan(struct qeth_card *card)
2551 {
2552         int rc;
2553
2554         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2555
2556         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2557         return rc;
2558 }
2559 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2560
2561 int qeth_send_stoplan(struct qeth_card *card)
2562 {
2563         int rc = 0;
2564
2565         /*
2566          * TODO: according to the IPA format document page 14,
2567          * TCP/IP (we!) never issue a STOPLAN
2568          * is this right ?!?
2569          */
2570         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2571
2572         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2573         return rc;
2574 }
2575 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2576
2577 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2578                 struct qeth_reply *reply, unsigned long data)
2579 {
2580         struct qeth_ipa_cmd *cmd;
2581
2582         QETH_CARD_TEXT(card, 4, "defadpcb");
2583
2584         cmd = (struct qeth_ipa_cmd *) data;
2585         if (cmd->hdr.return_code == 0)
2586                 cmd->hdr.return_code =
2587                         cmd->data.setadapterparms.hdr.return_code;
2588         return 0;
2589 }
2590 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2591
2592 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2593                 struct qeth_reply *reply, unsigned long data)
2594 {
2595         struct qeth_ipa_cmd *cmd;
2596
2597         QETH_CARD_TEXT(card, 3, "quyadpcb");
2598
2599         cmd = (struct qeth_ipa_cmd *) data;
2600         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2601                 card->info.link_type =
2602                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2603                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2604         }
2605         card->options.adp.supported_funcs =
2606                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2607         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2608 }
2609
2610 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2611                 __u32 command, __u32 cmdlen)
2612 {
2613         struct qeth_cmd_buffer *iob;
2614         struct qeth_ipa_cmd *cmd;
2615
2616         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2617                                      QETH_PROT_IPV4);
2618         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2619         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2620         cmd->data.setadapterparms.hdr.command_code = command;
2621         cmd->data.setadapterparms.hdr.used_total = 1;
2622         cmd->data.setadapterparms.hdr.seq_no = 1;
2623
2624         return iob;
2625 }
2626 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2627
2628 int qeth_query_setadapterparms(struct qeth_card *card)
2629 {
2630         int rc;
2631         struct qeth_cmd_buffer *iob;
2632
2633         QETH_CARD_TEXT(card, 3, "queryadp");
2634         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2635                                    sizeof(struct qeth_ipacmd_setadpparms));
2636         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2637         return rc;
2638 }
2639 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2640
2641 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2642                 unsigned int qdio_error, const char *dbftext)
2643 {
2644         if (qdio_error) {
2645                 QETH_CARD_TEXT(card, 2, dbftext);
2646                 QETH_DBF_TEXT(QERR, 2, dbftext);
2647                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2648                                buf->element[15].flags & 0xff);
2649                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2650                                buf->element[14].flags & 0xff);
2651                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2652                 if ((buf->element[15].flags & 0xff) == 0x12) {
2653                         card->stats.rx_dropped++;
2654                         return 0;
2655                 } else
2656                         return 1;
2657         }
2658         return 0;
2659 }
2660 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2661
2662 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2663 {
2664         struct qeth_qdio_q *queue = card->qdio.in_q;
2665         int count;
2666         int i;
2667         int rc;
2668         int newcount = 0;
2669
2670         count = (index < queue->next_buf_to_init)?
2671                 card->qdio.in_buf_pool.buf_count -
2672                 (queue->next_buf_to_init - index) :
2673                 card->qdio.in_buf_pool.buf_count -
2674                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2675         /* only requeue at a certain threshold to avoid SIGAs */
2676         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2677                 for (i = queue->next_buf_to_init;
2678                      i < queue->next_buf_to_init + count; ++i) {
2679                         if (qeth_init_input_buffer(card,
2680                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2681                                 break;
2682                         } else {
2683                                 newcount++;
2684                         }
2685                 }
2686
2687                 if (newcount < count) {
2688                         /* we are in memory shortage so we switch back to
2689                            traditional skb allocation and drop packages */
2690                         atomic_set(&card->force_alloc_skb, 3);
2691                         count = newcount;
2692                 } else {
2693                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2694                 }
2695
2696                 /*
2697                  * according to old code it should be avoided to requeue all
2698                  * 128 buffers in order to benefit from PCI avoidance.
2699                  * this function keeps at least one buffer (the buffer at
2700                  * 'index') un-requeued -> this buffer is the first buffer that
2701                  * will be requeued the next time
2702                  */
2703                 if (card->options.performance_stats) {
2704                         card->perf_stats.inbound_do_qdio_cnt++;
2705                         card->perf_stats.inbound_do_qdio_start_time =
2706                                 qeth_get_micros();
2707                 }
2708                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2709                              queue->next_buf_to_init, count);
2710                 if (card->options.performance_stats)
2711                         card->perf_stats.inbound_do_qdio_time +=
2712                                 qeth_get_micros() -
2713                                 card->perf_stats.inbound_do_qdio_start_time;
2714                 if (rc) {
2715                         dev_warn(&card->gdev->dev,
2716                                 "QDIO reported an error, rc=%i\n", rc);
2717                         QETH_CARD_TEXT(card, 2, "qinberr");
2718                 }
2719                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2720                                           QDIO_MAX_BUFFERS_PER_Q;
2721         }
2722 }
2723 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2724
2725 static int qeth_handle_send_error(struct qeth_card *card,
2726                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2727 {
2728         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2729
2730         QETH_CARD_TEXT(card, 6, "hdsnderr");
2731         if (card->info.type == QETH_CARD_TYPE_IQD) {
2732                 if (sbalf15 == 0) {
2733                         qdio_err = 0;
2734                 } else {
2735                         qdio_err = 1;
2736                 }
2737         }
2738         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2739
2740         if (!qdio_err)
2741                 return QETH_SEND_ERROR_NONE;
2742
2743         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2744                 return QETH_SEND_ERROR_RETRY;
2745
2746         QETH_CARD_TEXT(card, 1, "lnkfail");
2747         QETH_CARD_TEXT_(card, 1, "%04x %02x",
2748                        (u16)qdio_err, (u8)sbalf15);
2749         return QETH_SEND_ERROR_LINK_FAILURE;
2750 }
2751
2752 /*
2753  * Switched to packing state if the number of used buffers on a queue
2754  * reaches a certain limit.
2755  */
2756 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2757 {
2758         if (!queue->do_pack) {
2759                 if (atomic_read(&queue->used_buffers)
2760                     >= QETH_HIGH_WATERMARK_PACK){
2761                         /* switch non-PACKING -> PACKING */
2762                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
2763                         if (queue->card->options.performance_stats)
2764                                 queue->card->perf_stats.sc_dp_p++;
2765                         queue->do_pack = 1;
2766                 }
2767         }
2768 }
2769
2770 /*
2771  * Switches from packing to non-packing mode. If there is a packing
2772  * buffer on the queue this buffer will be prepared to be flushed.
2773  * In that case 1 is returned to inform the caller. If no buffer
2774  * has to be flushed, zero is returned.
2775  */
2776 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2777 {
2778         struct qeth_qdio_out_buffer *buffer;
2779         int flush_count = 0;
2780
2781         if (queue->do_pack) {
2782                 if (atomic_read(&queue->used_buffers)
2783                     <= QETH_LOW_WATERMARK_PACK) {
2784                         /* switch PACKING -> non-PACKING */
2785                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
2786                         if (queue->card->options.performance_stats)
2787                                 queue->card->perf_stats.sc_p_dp++;
2788                         queue->do_pack = 0;
2789                         /* flush packing buffers */
2790                         buffer = &queue->bufs[queue->next_buf_to_fill];
2791                         if ((atomic_read(&buffer->state) ==
2792                                                 QETH_QDIO_BUF_EMPTY) &&
2793                             (buffer->next_element_to_fill > 0)) {
2794                                 atomic_set(&buffer->state,
2795                                                 QETH_QDIO_BUF_PRIMED);
2796                                 flush_count++;
2797                                 queue->next_buf_to_fill =
2798                                         (queue->next_buf_to_fill + 1) %
2799                                         QDIO_MAX_BUFFERS_PER_Q;
2800                         }
2801                 }
2802         }
2803         return flush_count;
2804 }
2805
2806 /*
2807  * Called to flush a packing buffer if no more pci flags are on the queue.
2808  * Checks if there is a packing buffer and prepares it to be flushed.
2809  * In that case returns 1, otherwise zero.
2810  */
2811 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2812 {
2813         struct qeth_qdio_out_buffer *buffer;
2814
2815         buffer = &queue->bufs[queue->next_buf_to_fill];
2816         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2817            (buffer->next_element_to_fill > 0)) {
2818                 /* it's a packing buffer */
2819                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2820                 queue->next_buf_to_fill =
2821                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2822                 return 1;
2823         }
2824         return 0;
2825 }
2826
2827 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2828                                int count)
2829 {
2830         struct qeth_qdio_out_buffer *buf;
2831         int rc;
2832         int i;
2833         unsigned int qdio_flags;
2834
2835         for (i = index; i < index + count; ++i) {
2836                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2837                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2838                                 SBAL_FLAGS_LAST_ENTRY;
2839
2840                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2841                         continue;
2842
2843                 if (!queue->do_pack) {
2844                         if ((atomic_read(&queue->used_buffers) >=
2845                                 (QETH_HIGH_WATERMARK_PACK -
2846                                  QETH_WATERMARK_PACK_FUZZ)) &&
2847                             !atomic_read(&queue->set_pci_flags_count)) {
2848                                 /* it's likely that we'll go to packing
2849                                  * mode soon */
2850                                 atomic_inc(&queue->set_pci_flags_count);
2851                                 buf->buffer->element[0].flags |= 0x40;
2852                         }
2853                 } else {
2854                         if (!atomic_read(&queue->set_pci_flags_count)) {
2855                                 /*
2856                                  * there's no outstanding PCI any more, so we
2857                                  * have to request a PCI to be sure the the PCI
2858                                  * will wake at some time in the future then we
2859                                  * can flush packed buffers that might still be
2860                                  * hanging around, which can happen if no
2861                                  * further send was requested by the stack
2862                                  */
2863                                 atomic_inc(&queue->set_pci_flags_count);
2864                                 buf->buffer->element[0].flags |= 0x40;
2865                         }
2866                 }
2867         }
2868
2869         queue->sync_iqdio_error = 0;
2870         queue->card->dev->trans_start = jiffies;
2871         if (queue->card->options.performance_stats) {
2872                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2873                 queue->card->perf_stats.outbound_do_qdio_start_time =
2874                         qeth_get_micros();
2875         }
2876         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2877         if (atomic_read(&queue->set_pci_flags_count))
2878                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2879         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2880                      queue->queue_no, index, count);
2881         if (queue->card->options.performance_stats)
2882                 queue->card->perf_stats.outbound_do_qdio_time +=
2883                         qeth_get_micros() -
2884                         queue->card->perf_stats.outbound_do_qdio_start_time;
2885         if (rc > 0) {
2886                 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2887                         queue->sync_iqdio_error = rc & 3;
2888         }
2889         if (rc) {
2890                 queue->card->stats.tx_errors += count;
2891                 /* ignore temporary SIGA errors without busy condition */
2892                 if (rc == QDIO_ERROR_SIGA_TARGET)
2893                         return;
2894                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2895                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2896
2897                 /* this must not happen under normal circumstances. if it
2898                  * happens something is really wrong -> recover */
2899                 qeth_schedule_recovery(queue->card);
2900                 return;
2901         }
2902         atomic_add(count, &queue->used_buffers);
2903         if (queue->card->options.performance_stats)
2904                 queue->card->perf_stats.bufs_sent += count;
2905 }
2906
2907 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2908 {
2909         int index;
2910         int flush_cnt = 0;
2911         int q_was_packing = 0;
2912
2913         /*
2914          * check if weed have to switch to non-packing mode or if
2915          * we have to get a pci flag out on the queue
2916          */
2917         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2918             !atomic_read(&queue->set_pci_flags_count)) {
2919                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2920                                 QETH_OUT_Q_UNLOCKED) {
2921                         /*
2922                          * If we get in here, there was no action in
2923                          * do_send_packet. So, we check if there is a
2924                          * packing buffer to be flushed here.
2925                          */
2926                         netif_stop_queue(queue->card->dev);
2927                         index = queue->next_buf_to_fill;
2928                         q_was_packing = queue->do_pack;
2929                         /* queue->do_pack may change */
2930                         barrier();
2931                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2932                         if (!flush_cnt &&
2933                             !atomic_read(&queue->set_pci_flags_count))
2934                                 flush_cnt +=
2935                                         qeth_flush_buffers_on_no_pci(queue);
2936                         if (queue->card->options.performance_stats &&
2937                             q_was_packing)
2938                                 queue->card->perf_stats.bufs_sent_pack +=
2939                                         flush_cnt;
2940                         if (flush_cnt)
2941                                 qeth_flush_buffers(queue, index, flush_cnt);
2942                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2943                 }
2944         }
2945 }
2946
2947 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2948                 unsigned int qdio_error, int __queue, int first_element,
2949                 int count, unsigned long card_ptr)
2950 {
2951         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2952         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2953         struct qeth_qdio_out_buffer *buffer;
2954         int i;
2955         unsigned qeth_send_err;
2956
2957         QETH_CARD_TEXT(card, 6, "qdouhdl");
2958         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2959                 QETH_CARD_TEXT(card, 2, "achkcond");
2960                 netif_stop_queue(card->dev);
2961                 qeth_schedule_recovery(card);
2962                 return;
2963         }
2964         if (card->options.performance_stats) {
2965                 card->perf_stats.outbound_handler_cnt++;
2966                 card->perf_stats.outbound_handler_start_time =
2967                         qeth_get_micros();
2968         }
2969         for (i = first_element; i < (first_element + count); ++i) {
2970                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2971                 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
2972                 __qeth_clear_output_buffer(queue, buffer,
2973                         (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2974         }
2975         atomic_sub(count, &queue->used_buffers);
2976         /* check if we need to do something on this outbound queue */
2977         if (card->info.type != QETH_CARD_TYPE_IQD)
2978                 qeth_check_outbound_queue(queue);
2979
2980         netif_wake_queue(queue->card->dev);
2981         if (card->options.performance_stats)
2982                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2983                         card->perf_stats.outbound_handler_start_time;
2984 }
2985 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2986
2987 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2988                         int ipv, int cast_type)
2989 {
2990         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
2991                      card->info.type == QETH_CARD_TYPE_OSX))
2992                 return card->qdio.default_out_queue;
2993         switch (card->qdio.no_out_queues) {
2994         case 4:
2995                 if (cast_type && card->info.is_multicast_different)
2996                         return card->info.is_multicast_different &
2997                                 (card->qdio.no_out_queues - 1);
2998                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2999                         const u8 tos = ip_hdr(skb)->tos;
3000
3001                         if (card->qdio.do_prio_queueing ==
3002                                 QETH_PRIO_Q_ING_TOS) {
3003                                 if (tos & IP_TOS_NOTIMPORTANT)
3004                                         return 3;
3005                                 if (tos & IP_TOS_HIGHRELIABILITY)
3006                                         return 2;
3007                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
3008                                         return 1;
3009                                 if (tos & IP_TOS_LOWDELAY)
3010                                         return 0;
3011                         }
3012                         if (card->qdio.do_prio_queueing ==
3013                                 QETH_PRIO_Q_ING_PREC)
3014                                 return 3 - (tos >> 6);
3015                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3016                         /* TODO: IPv6!!! */
3017                 }
3018                 return card->qdio.default_out_queue;
3019         case 1: /* fallthrough for single-out-queue 1920-device */
3020         default:
3021                 return card->qdio.default_out_queue;
3022         }
3023 }
3024 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3025
3026 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3027                      struct sk_buff *skb, int elems)
3028 {
3029         int elements_needed = 0;
3030
3031         if (skb_shinfo(skb)->nr_frags > 0)
3032                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3033         if (elements_needed == 0)
3034                 elements_needed = 1 + (((((unsigned long) skb->data) %
3035                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
3036         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3037                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3038                         "(Number=%d / Length=%d). Discarded.\n",
3039                         (elements_needed+elems), skb->len);
3040                 return 0;
3041         }
3042         return elements_needed;
3043 }
3044 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3045
3046 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3047         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3048         int offset)
3049 {
3050         int length = skb->len;
3051         int length_here;
3052         int element;
3053         char *data;
3054         int first_lap ;
3055
3056         element = *next_element_to_fill;
3057         data = skb->data;
3058         first_lap = (is_tso == 0 ? 1 : 0);
3059
3060         if (offset >= 0) {
3061                 data = skb->data + offset;
3062                 length -= offset;
3063                 first_lap = 0;
3064         }
3065
3066         while (length > 0) {
3067                 /* length_here is the remaining amount of data in this page */
3068                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3069                 if (length < length_here)
3070                         length_here = length;
3071
3072                 buffer->element[element].addr = data;
3073                 buffer->element[element].length = length_here;
3074                 length -= length_here;
3075                 if (!length) {
3076                         if (first_lap)
3077                                 buffer->element[element].flags = 0;
3078                         else
3079                                 buffer->element[element].flags =
3080                                     SBAL_FLAGS_LAST_FRAG;
3081                 } else {
3082                         if (first_lap)
3083                                 buffer->element[element].flags =
3084                                     SBAL_FLAGS_FIRST_FRAG;
3085                         else
3086                                 buffer->element[element].flags =
3087                                     SBAL_FLAGS_MIDDLE_FRAG;
3088                 }
3089                 data += length_here;
3090                 element++;
3091                 first_lap = 0;
3092         }
3093         *next_element_to_fill = element;
3094 }
3095
3096 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3097                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3098                 struct qeth_hdr *hdr, int offset, int hd_len)
3099 {
3100         struct qdio_buffer *buffer;
3101         int flush_cnt = 0, hdr_len, large_send = 0;
3102
3103         buffer = buf->buffer;
3104         atomic_inc(&skb->users);
3105         skb_queue_tail(&buf->skb_list, skb);
3106
3107         /*check first on TSO ....*/
3108         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3109                 int element = buf->next_element_to_fill;
3110
3111                 hdr_len = sizeof(struct qeth_hdr_tso) +
3112                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3113                 /*fill first buffer entry only with header information */
3114                 buffer->element[element].addr = skb->data;
3115                 buffer->element[element].length = hdr_len;
3116                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3117                 buf->next_element_to_fill++;
3118                 skb->data += hdr_len;
3119                 skb->len  -= hdr_len;
3120                 large_send = 1;
3121         }
3122
3123         if (offset >= 0) {
3124                 int element = buf->next_element_to_fill;
3125                 buffer->element[element].addr = hdr;
3126                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3127                                                         hd_len;
3128                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3129                 buf->is_header[element] = 1;
3130                 buf->next_element_to_fill++;
3131         }
3132
3133         if (skb_shinfo(skb)->nr_frags == 0)
3134                 __qeth_fill_buffer(skb, buffer, large_send,
3135                                 (int *)&buf->next_element_to_fill, offset);
3136         else
3137                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3138                                         (int *)&buf->next_element_to_fill);
3139
3140         if (!queue->do_pack) {
3141                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3142                 /* set state to PRIMED -> will be flushed */
3143                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3144                 flush_cnt = 1;
3145         } else {
3146                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3147                 if (queue->card->options.performance_stats)
3148                         queue->card->perf_stats.skbs_sent_pack++;
3149                 if (buf->next_element_to_fill >=
3150                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3151                         /*
3152                          * packed buffer if full -> set state PRIMED
3153                          * -> will be flushed
3154                          */
3155                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3156                         flush_cnt = 1;
3157                 }
3158         }
3159         return flush_cnt;
3160 }
3161
3162 int qeth_do_send_packet_fast(struct qeth_card *card,
3163                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3164                 struct qeth_hdr *hdr, int elements_needed,
3165                 int offset, int hd_len)
3166 {
3167         struct qeth_qdio_out_buffer *buffer;
3168         struct sk_buff *skb1;
3169         struct qeth_skb_data *retry_ctrl;
3170         int index;
3171         int rc;
3172
3173         /* spin until we get the queue ... */
3174         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3175                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3176         /* ... now we've got the queue */
3177         index = queue->next_buf_to_fill;
3178         buffer = &queue->bufs[queue->next_buf_to_fill];
3179         /*
3180          * check if buffer is empty to make sure that we do not 'overtake'
3181          * ourselves and try to fill a buffer that is already primed
3182          */
3183         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3184                 goto out;
3185         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3186                                           QDIO_MAX_BUFFERS_PER_Q;
3187         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3188         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3189         qeth_flush_buffers(queue, index, 1);
3190         if (queue->sync_iqdio_error == 2) {
3191                 skb1 = skb_dequeue(&buffer->skb_list);
3192                 while (skb1) {
3193                         atomic_dec(&skb1->users);
3194                         skb1 = skb_dequeue(&buffer->skb_list);
3195                 }
3196                 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3197                 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3198                         retry_ctrl->magic = QETH_SKB_MAGIC;
3199                         retry_ctrl->count = 0;
3200                 }
3201                 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3202                         retry_ctrl->count++;
3203                         rc = dev_queue_xmit(skb);
3204                 } else {
3205                         dev_kfree_skb_any(skb);
3206                         QETH_DBF_TEXT(QERR, 2, "qrdrop");
3207                 }
3208         }
3209         return 0;
3210 out:
3211         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3212         return -EBUSY;
3213 }
3214 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3215
3216 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3217                 struct sk_buff *skb, struct qeth_hdr *hdr,
3218                 int elements_needed)
3219 {
3220         struct qeth_qdio_out_buffer *buffer;
3221         int start_index;
3222         int flush_count = 0;
3223         int do_pack = 0;
3224         int tmp;
3225         int rc = 0;
3226
3227         /* spin until we get the queue ... */
3228         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3229                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3230         start_index = queue->next_buf_to_fill;
3231         buffer = &queue->bufs[queue->next_buf_to_fill];
3232         /*
3233          * check if buffer is empty to make sure that we do not 'overtake'
3234          * ourselves and try to fill a buffer that is already primed
3235          */
3236         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3237                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3238                 return -EBUSY;
3239         }
3240         /* check if we need to switch packing state of this queue */
3241         qeth_switch_to_packing_if_needed(queue);
3242         if (queue->do_pack) {
3243                 do_pack = 1;
3244                 /* does packet fit in current buffer? */
3245                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3246                     buffer->next_element_to_fill) < elements_needed) {
3247                         /* ... no -> set state PRIMED */
3248                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3249                         flush_count++;
3250                         queue->next_buf_to_fill =
3251                                 (queue->next_buf_to_fill + 1) %
3252                                 QDIO_MAX_BUFFERS_PER_Q;
3253                         buffer = &queue->bufs[queue->next_buf_to_fill];
3254                         /* we did a step forward, so check buffer state
3255                          * again */
3256                         if (atomic_read(&buffer->state) !=
3257                             QETH_QDIO_BUF_EMPTY) {
3258                                 qeth_flush_buffers(queue, start_index,
3259                                                            flush_count);
3260                                 atomic_set(&queue->state,
3261                                                 QETH_OUT_Q_UNLOCKED);
3262                                 return -EBUSY;
3263                         }
3264                 }
3265         }
3266         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3267         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3268                                   QDIO_MAX_BUFFERS_PER_Q;
3269         flush_count += tmp;
3270         if (flush_count)
3271                 qeth_flush_buffers(queue, start_index, flush_count);
3272         else if (!atomic_read(&queue->set_pci_flags_count))
3273                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3274         /*
3275          * queue->state will go from LOCKED -> UNLOCKED or from
3276          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3277          * (switch packing state or flush buffer to get another pci flag out).
3278          * In that case we will enter this loop
3279          */
3280         while (atomic_dec_return(&queue->state)) {
3281                 flush_count = 0;
3282                 start_index = queue->next_buf_to_fill;
3283                 /* check if we can go back to non-packing state */
3284                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3285                 /*
3286                  * check if we need to flush a packing buffer to get a pci
3287                  * flag out on the queue
3288                  */
3289                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3290                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3291                 if (flush_count)
3292                         qeth_flush_buffers(queue, start_index, flush_count);
3293         }
3294         /* at this point the queue is UNLOCKED again */
3295         if (queue->card->options.performance_stats && do_pack)
3296                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3297
3298         return rc;
3299 }
3300 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3301
3302 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3303                 struct qeth_reply *reply, unsigned long data)
3304 {
3305         struct qeth_ipa_cmd *cmd;
3306         struct qeth_ipacmd_setadpparms *setparms;
3307
3308         QETH_CARD_TEXT(card, 4, "prmadpcb");
3309
3310         cmd = (struct qeth_ipa_cmd *) data;
3311         setparms = &(cmd->data.setadapterparms);
3312
3313         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3314         if (cmd->hdr.return_code) {
3315                 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3316                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3317         }
3318         card->info.promisc_mode = setparms->data.mode;
3319         return 0;
3320 }
3321
3322 void qeth_setadp_promisc_mode(struct qeth_card *card)
3323 {
3324         enum qeth_ipa_promisc_modes mode;
3325         struct net_device *dev = card->dev;
3326         struct qeth_cmd_buffer *iob;
3327         struct qeth_ipa_cmd *cmd;
3328
3329         QETH_CARD_TEXT(card, 4, "setprom");
3330
3331         if (((dev->flags & IFF_PROMISC) &&
3332              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3333             (!(dev->flags & IFF_PROMISC) &&
3334              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3335                 return;
3336         mode = SET_PROMISC_MODE_OFF;
3337         if (dev->flags & IFF_PROMISC)
3338                 mode = SET_PROMISC_MODE_ON;
3339         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3340
3341         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3342                         sizeof(struct qeth_ipacmd_setadpparms));
3343         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3344         cmd->data.setadapterparms.data.mode = mode;
3345         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3346 }
3347 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3348
3349 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3350 {
3351         struct qeth_card *card;
3352         char dbf_text[15];
3353
3354         card = dev->ml_priv;
3355
3356         QETH_CARD_TEXT(card, 4, "chgmtu");
3357         sprintf(dbf_text, "%8x", new_mtu);
3358         QETH_CARD_TEXT(card, 4, dbf_text);
3359
3360         if (new_mtu < 64)
3361                 return -EINVAL;
3362         if (new_mtu > 65535)
3363                 return -EINVAL;
3364         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3365             (!qeth_mtu_is_valid(card, new_mtu)))
3366                 return -EINVAL;
3367         dev->mtu = new_mtu;
3368         return 0;
3369 }
3370 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3371
3372 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3373 {
3374         struct qeth_card *card;
3375
3376         card = dev->ml_priv;
3377
3378         QETH_CARD_TEXT(card, 5, "getstat");
3379
3380         return &card->stats;
3381 }
3382 EXPORT_SYMBOL_GPL(qeth_get_stats);
3383
3384 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3385                 struct qeth_reply *reply, unsigned long data)
3386 {
3387         struct qeth_ipa_cmd *cmd;
3388
3389         QETH_CARD_TEXT(card, 4, "chgmaccb");
3390
3391         cmd = (struct qeth_ipa_cmd *) data;
3392         if (!card->options.layer2 ||
3393             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3394                 memcpy(card->dev->dev_addr,
3395                        &cmd->data.setadapterparms.data.change_addr.addr,
3396                        OSA_ADDR_LEN);
3397                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3398         }
3399         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3400         return 0;
3401 }
3402
3403 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3404 {
3405         int rc;
3406         struct qeth_cmd_buffer *iob;
3407         struct qeth_ipa_cmd *cmd;
3408
3409         QETH_CARD_TEXT(card, 4, "chgmac");
3410
3411         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3412                                    sizeof(struct qeth_ipacmd_setadpparms));
3413         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3414         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3415         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3416         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3417                card->dev->dev_addr, OSA_ADDR_LEN);
3418         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3419                                NULL);
3420         return rc;
3421 }
3422 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3423
3424 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3425                 struct qeth_reply *reply, unsigned long data)
3426 {
3427         struct qeth_ipa_cmd *cmd;
3428         struct qeth_set_access_ctrl *access_ctrl_req;
3429         int rc;
3430
3431         QETH_CARD_TEXT(card, 4, "setaccb");
3432
3433         cmd = (struct qeth_ipa_cmd *) data;
3434         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3435         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3436         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3437         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3438                 cmd->data.setadapterparms.hdr.return_code);
3439         switch (cmd->data.setadapterparms.hdr.return_code) {
3440         case SET_ACCESS_CTRL_RC_SUCCESS:
3441         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3442         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3443         {
3444                 card->options.isolation = access_ctrl_req->subcmd_code;
3445                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3446                         dev_info(&card->gdev->dev,
3447                             "QDIO data connection isolation is deactivated\n");
3448                 } else {
3449                         dev_info(&card->gdev->dev,
3450                             "QDIO data connection isolation is activated\n");
3451                 }
3452                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3453                         card->gdev->dev.kobj.name,
3454                         access_ctrl_req->subcmd_code,
3455                         cmd->data.setadapterparms.hdr.return_code);
3456                 rc = 0;
3457                 break;
3458         }
3459         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3460         {
3461                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3462                         card->gdev->dev.kobj.name,
3463                         access_ctrl_req->subcmd_code,
3464                         cmd->data.setadapterparms.hdr.return_code);
3465                 dev_err(&card->gdev->dev, "Adapter does not "
3466                         "support QDIO data connection isolation\n");
3467
3468                 /* ensure isolation mode is "none" */
3469                 card->options.isolation = ISOLATION_MODE_NONE;
3470                 rc = -EOPNOTSUPP;
3471                 break;
3472         }
3473         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3474         {
3475                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3476                         card->gdev->dev.kobj.name,
3477                         access_ctrl_req->subcmd_code,
3478                         cmd->data.setadapterparms.hdr.return_code);
3479                 dev_err(&card->gdev->dev,
3480                         "Adapter is dedicated. "
3481                         "QDIO data connection isolation not supported\n");
3482
3483                 /* ensure isolation mode is "none" */
3484                 card->options.isolation = ISOLATION_MODE_NONE;
3485                 rc = -EOPNOTSUPP;
3486                 break;
3487         }
3488         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3489         {
3490                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3491                         card->gdev->dev.kobj.name,
3492                         access_ctrl_req->subcmd_code,
3493                         cmd->data.setadapterparms.hdr.return_code);
3494                 dev_err(&card->gdev->dev,
3495                         "TSO does not permit QDIO data connection isolation\n");
3496
3497                 /* ensure isolation mode is "none" */
3498                 card->options.isolation = ISOLATION_MODE_NONE;
3499                 rc = -EPERM;
3500                 break;
3501         }
3502         default:
3503         {
3504                 /* this should never happen */
3505                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3506                         "==UNKNOWN\n",
3507                         card->gdev->dev.kobj.name,
3508                         access_ctrl_req->subcmd_code,
3509                         cmd->data.setadapterparms.hdr.return_code);
3510
3511                 /* ensure isolation mode is "none" */
3512                 card->options.isolation = ISOLATION_MODE_NONE;
3513                 rc = 0;
3514                 break;
3515         }
3516         }
3517         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3518         return rc;
3519 }
3520
3521 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3522                 enum qeth_ipa_isolation_modes isolation)
3523 {
3524         int rc;
3525         struct qeth_cmd_buffer *iob;
3526         struct qeth_ipa_cmd *cmd;
3527         struct qeth_set_access_ctrl *access_ctrl_req;
3528
3529         QETH_CARD_TEXT(card, 4, "setacctl");
3530
3531         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3532         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3533
3534         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3535                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3536                                    sizeof(struct qeth_set_access_ctrl));
3537         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3538         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3539         access_ctrl_req->subcmd_code = isolation;
3540
3541         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3542                                NULL);
3543         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3544         return rc;
3545 }
3546
3547 int qeth_set_access_ctrl_online(struct qeth_card *card)
3548 {
3549         int rc = 0;
3550
3551         QETH_CARD_TEXT(card, 4, "setactlo");
3552
3553         if ((card->info.type == QETH_CARD_TYPE_OSD ||
3554              card->info.type == QETH_CARD_TYPE_OSX) &&
3555              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3556                 rc = qeth_setadpparms_set_access_ctrl(card,
3557                         card->options.isolation);
3558                 if (rc) {
3559                         QETH_DBF_MESSAGE(3,
3560                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3561                                 card->gdev->dev.kobj.name,
3562                                 rc);
3563                 }
3564         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3565                 card->options.isolation = ISOLATION_MODE_NONE;
3566
3567                 dev_err(&card->gdev->dev, "Adapter does not "
3568                         "support QDIO data connection isolation\n");
3569                 rc = -EOPNOTSUPP;
3570         }
3571         return rc;
3572 }
3573 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3574
3575 void qeth_tx_timeout(struct net_device *dev)
3576 {
3577         struct qeth_card *card;
3578
3579         card = dev->ml_priv;
3580         QETH_CARD_TEXT(card, 4, "txtimeo");
3581         card->stats.tx_errors++;
3582         qeth_schedule_recovery(card);
3583 }
3584 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3585
3586 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3587 {
3588         struct qeth_card *card = dev->ml_priv;
3589         int rc = 0;
3590
3591         switch (regnum) {
3592         case MII_BMCR: /* Basic mode control register */
3593                 rc = BMCR_FULLDPLX;
3594                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3595                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3596                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3597                         rc |= BMCR_SPEED100;
3598                 break;
3599         case MII_BMSR: /* Basic mode status register */
3600                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3601                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3602                      BMSR_100BASE4;
3603                 break;
3604         case MII_PHYSID1: /* PHYS ID 1 */
3605                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3606                      dev->dev_addr[2];
3607                 rc = (rc >> 5) & 0xFFFF;
3608                 break;
3609         case MII_PHYSID2: /* PHYS ID 2 */
3610                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3611                 break;
3612         case MII_ADVERTISE: /* Advertisement control reg */
3613                 rc = ADVERTISE_ALL;
3614                 break;
3615         case MII_LPA: /* Link partner ability reg */
3616                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3617                      LPA_100BASE4 | LPA_LPACK;
3618                 break;
3619         case MII_EXPANSION: /* Expansion register */
3620                 break;
3621         case MII_DCOUNTER: /* disconnect counter */
3622                 break;
3623         case MII_FCSCOUNTER: /* false carrier counter */
3624                 break;
3625         case MII_NWAYTEST: /* N-way auto-neg test register */
3626                 break;
3627         case MII_RERRCOUNTER: /* rx error counter */
3628                 rc = card->stats.rx_errors;
3629                 break;
3630         case MII_SREVISION: /* silicon revision */
3631                 break;
3632         case MII_RESV1: /* reserved 1 */
3633                 break;
3634         case MII_LBRERROR: /* loopback, rx, bypass error */
3635                 break;
3636         case MII_PHYADDR: /* physical address */
3637                 break;
3638         case MII_RESV2: /* reserved 2 */
3639                 break;
3640         case MII_TPISTATUS: /* TPI status for 10mbps */
3641                 break;
3642         case MII_NCONFIG: /* network interface config */
3643                 break;
3644         default:
3645                 break;
3646         }
3647         return rc;
3648 }
3649 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3650
3651 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3652                 struct qeth_cmd_buffer *iob, int len,
3653                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3654                         unsigned long),
3655                 void *reply_param)
3656 {
3657         u16 s1, s2;
3658
3659         QETH_CARD_TEXT(card, 4, "sendsnmp");
3660
3661         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3662         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3663                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3664         /* adjust PDU length fields in IPA_PDU_HEADER */
3665         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3666         s2 = (u32) len;
3667         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3668         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3669         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3670         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3671         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3672                                       reply_cb, reply_param);
3673 }
3674
3675 static int qeth_snmp_command_cb(struct qeth_card *card,
3676                 struct qeth_reply *reply, unsigned long sdata)
3677 {
3678         struct qeth_ipa_cmd *cmd;
3679         struct qeth_arp_query_info *qinfo;
3680         struct qeth_snmp_cmd *snmp;
3681         unsigned char *data;
3682         __u16 data_len;
3683
3684         QETH_CARD_TEXT(card, 3, "snpcmdcb");
3685
3686         cmd = (struct qeth_ipa_cmd *) sdata;
3687         data = (unsigned char *)((char *)cmd - reply->offset);
3688         qinfo = (struct qeth_arp_query_info *) reply->param;
3689         snmp = &cmd->data.setadapterparms.data.snmp;
3690
3691         if (cmd->hdr.return_code) {
3692                 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3693                 return 0;
3694         }
3695         if (cmd->data.setadapterparms.hdr.return_code) {
3696                 cmd->hdr.return_code =
3697                         cmd->data.setadapterparms.hdr.return_code;
3698                 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3699                 return 0;
3700         }
3701         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3702         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3703                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3704         else
3705                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3706
3707         /* check if there is enough room in userspace */
3708         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3709                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3710                 cmd->hdr.return_code = -ENOMEM;
3711                 return 0;
3712         }
3713         QETH_CARD_TEXT_(card, 4, "snore%i",
3714                        cmd->data.setadapterparms.hdr.used_total);
3715         QETH_CARD_TEXT_(card, 4, "sseqn%i",
3716                 cmd->data.setadapterparms.hdr.seq_no);
3717         /*copy entries to user buffer*/
3718         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3719                 memcpy(qinfo->udata + qinfo->udata_offset,
3720                        (char *)snmp,
3721                        data_len + offsetof(struct qeth_snmp_cmd, data));
3722                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3723         } else {
3724                 memcpy(qinfo->udata + qinfo->udata_offset,
3725                        (char *)&snmp->request, data_len);
3726         }
3727         qinfo->udata_offset += data_len;
3728         /* check if all replies received ... */
3729                 QETH_CARD_TEXT_(card, 4, "srtot%i",
3730                                cmd->data.setadapterparms.hdr.used_total);
3731                 QETH_CARD_TEXT_(card, 4, "srseq%i",
3732                                cmd->data.setadapterparms.hdr.seq_no);
3733         if (cmd->data.setadapterparms.hdr.seq_no <
3734             cmd->data.setadapterparms.hdr.used_total)
3735                 return 1;
3736         return 0;
3737 }
3738
3739 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3740 {
3741         struct qeth_cmd_buffer *iob;
3742         struct qeth_ipa_cmd *cmd;
3743         struct qeth_snmp_ureq *ureq;
3744         int req_len;
3745         struct qeth_arp_query_info qinfo = {0, };
3746         int rc = 0;
3747
3748         QETH_CARD_TEXT(card, 3, "snmpcmd");
3749
3750         if (card->info.guestlan)
3751                 return -EOPNOTSUPP;
3752
3753         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3754             (!card->options.layer2)) {
3755                 return -EOPNOTSUPP;
3756         }
3757         /* skip 4 bytes (data_len struct member) to get req_len */
3758         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3759                 return -EFAULT;
3760         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3761         if (!ureq) {
3762                 QETH_CARD_TEXT(card, 2, "snmpnome");
3763                 return -ENOMEM;
3764         }
3765         if (copy_from_user(ureq, udata,
3766                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3767                 kfree(ureq);
3768                 return -EFAULT;
3769         }
3770         qinfo.udata_len = ureq->hdr.data_len;
3771         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3772         if (!qinfo.udata) {
3773                 kfree(ureq);
3774                 return -ENOMEM;
3775         }
3776         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3777
3778         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3779                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3780         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3781         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3782         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3783                                     qeth_snmp_command_cb, (void *)&qinfo);
3784         if (rc)
3785                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3786                            QETH_CARD_IFNAME(card), rc);
3787         else {
3788                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3789                         rc = -EFAULT;
3790         }
3791
3792         kfree(ureq);
3793         kfree(qinfo.udata);
3794         return rc;
3795 }
3796 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3797
3798 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3799 {
3800         switch (card->info.type) {
3801         case QETH_CARD_TYPE_IQD:
3802                 return 2;
3803         default:
3804                 return 0;
3805         }
3806 }
3807
3808 static int qeth_qdio_establish(struct qeth_card *card)
3809 {
3810         struct qdio_initialize init_data;
3811         char *qib_param_field;
3812         struct qdio_buffer **in_sbal_ptrs;
3813         struct qdio_buffer **out_sbal_ptrs;
3814         int i, j, k;
3815         int rc = 0;
3816
3817         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3818
3819         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3820                               GFP_KERNEL);
3821         if (!qib_param_field)
3822                 return -ENOMEM;
3823
3824         qeth_create_qib_param_field(card, qib_param_field);
3825         qeth_create_qib_param_field_blkt(card, qib_param_field);
3826
3827         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3828                                GFP_KERNEL);
3829         if (!in_sbal_ptrs) {
3830                 kfree(qib_param_field);
3831                 return -ENOMEM;
3832         }
3833         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3834                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3835                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3836
3837         out_sbal_ptrs =
3838                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3839                         sizeof(void *), GFP_KERNEL);
3840         if (!out_sbal_ptrs) {
3841                 kfree(in_sbal_ptrs);
3842                 kfree(qib_param_field);
3843                 return -ENOMEM;
3844         }
3845         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3846                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3847                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3848                                 card->qdio.out_qs[i]->bufs[j].buffer);
3849                 }
3850
3851         memset(&init_data, 0, sizeof(struct qdio_initialize));
3852         init_data.cdev                   = CARD_DDEV(card);
3853         init_data.q_format               = qeth_get_qdio_q_format(card);
3854         init_data.qib_param_field_format = 0;
3855         init_data.qib_param_field        = qib_param_field;
3856         init_data.no_input_qs            = 1;
3857         init_data.no_output_qs           = card->qdio.no_out_queues;
3858         init_data.input_handler          = card->discipline.input_handler;
3859         init_data.output_handler         = card->discipline.output_handler;
3860         init_data.int_parm               = (unsigned long) card;
3861         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3862         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3863
3864         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3865                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3866                 rc = qdio_allocate(&init_data);
3867                 if (rc) {
3868                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3869                         goto out;
3870                 }
3871                 rc = qdio_establish(&init_data);
3872                 if (rc) {
3873                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3874                         qdio_free(CARD_DDEV(card));
3875                 }
3876         }
3877 out:
3878         kfree(out_sbal_ptrs);
3879         kfree(in_sbal_ptrs);
3880         kfree(qib_param_field);
3881         return rc;
3882 }
3883
3884 static void qeth_core_free_card(struct qeth_card *card)
3885 {
3886
3887         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3888         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3889         qeth_clean_channel(&card->read);
3890         qeth_clean_channel(&card->write);
3891         if (card->dev)
3892                 free_netdev(card->dev);
3893         kfree(card->ip_tbd_list);
3894         qeth_free_qdio_buffers(card);
3895         unregister_service_level(&card->qeth_service_level);
3896         kfree(card);
3897 }
3898
3899 static struct ccw_device_id qeth_ids[] = {
3900         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
3901                                         .driver_info = QETH_CARD_TYPE_OSD},
3902         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
3903                                         .driver_info = QETH_CARD_TYPE_IQD},
3904         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
3905                                         .driver_info = QETH_CARD_TYPE_OSN},
3906         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
3907                                         .driver_info = QETH_CARD_TYPE_OSM},
3908         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
3909                                         .driver_info = QETH_CARD_TYPE_OSX},
3910         {},
3911 };
3912 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3913
3914 static struct ccw_driver qeth_ccw_driver = {
3915         .name = "qeth",
3916         .ids = qeth_ids,
3917         .probe = ccwgroup_probe_ccwdev,
3918         .remove = ccwgroup_remove_ccwdev,
3919 };
3920
3921 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3922                                 unsigned long driver_id)
3923 {
3924         return ccwgroup_create_from_string(root_dev, driver_id,
3925                                            &qeth_ccw_driver, 3, buf);
3926 }
3927
3928 int qeth_core_hardsetup_card(struct qeth_card *card)
3929 {
3930         int retries = 0;
3931         int rc;
3932
3933         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3934         atomic_set(&card->force_alloc_skb, 0);
3935 retry:
3936         if (retries)
3937                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3938                         dev_name(&card->gdev->dev));
3939         ccw_device_set_offline(CARD_DDEV(card));
3940         ccw_device_set_offline(CARD_WDEV(card));
3941         ccw_device_set_offline(CARD_RDEV(card));
3942         rc = ccw_device_set_online(CARD_RDEV(card));
3943         if (rc)
3944                 goto retriable;
3945         rc = ccw_device_set_online(CARD_WDEV(card));
3946         if (rc)
3947                 goto retriable;
3948         rc = ccw_device_set_online(CARD_DDEV(card));
3949         if (rc)
3950                 goto retriable;
3951         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3952 retriable:
3953         if (rc == -ERESTARTSYS) {
3954                 QETH_DBF_TEXT(SETUP, 2, "break1");
3955                 return rc;
3956         } else if (rc) {
3957                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3958                 if (++retries > 3)
3959                         goto out;
3960                 else
3961                         goto retry;
3962         }
3963         qeth_init_tokens(card);
3964         qeth_init_func_level(card);
3965         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3966         if (rc == -ERESTARTSYS) {
3967                 QETH_DBF_TEXT(SETUP, 2, "break2");
3968                 return rc;
3969         } else if (rc) {
3970                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3971                 if (--retries < 0)
3972                         goto out;
3973                 else
3974                         goto retry;
3975         }
3976         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3977         if (rc == -ERESTARTSYS) {
3978                 QETH_DBF_TEXT(SETUP, 2, "break3");
3979                 return rc;
3980         } else if (rc) {
3981                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3982                 if (--retries < 0)
3983                         goto out;
3984                 else
3985                         goto retry;
3986         }
3987         rc = qeth_mpc_initialize(card);
3988         if (rc) {
3989                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3990                 goto out;
3991         }
3992         return 0;
3993 out:
3994         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3995                 "an error on the device\n");
3996         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3997                 dev_name(&card->gdev->dev), rc);
3998         return rc;
3999 }
4000 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4001
4002 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4003                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4004 {
4005         struct page *page = virt_to_page(element->addr);
4006         if (*pskb == NULL) {
4007                 /* the upper protocol layers assume that there is data in the
4008                  * skb itself. Copy a small amount (64 bytes) to make them
4009                  * happy. */
4010                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4011                 if (!(*pskb))
4012                         return -ENOMEM;
4013                 skb_reserve(*pskb, ETH_HLEN);
4014                 if (data_len <= 64) {
4015                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
4016                                 data_len);
4017                 } else {
4018                         get_page(page);
4019                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4020                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4021                                 data_len - 64);
4022                         (*pskb)->data_len += data_len - 64;
4023                         (*pskb)->len      += data_len - 64;
4024                         (*pskb)->truesize += data_len - 64;
4025                         (*pfrag)++;
4026                 }
4027         } else {
4028                 get_page(page);
4029                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4030                 (*pskb)->data_len += data_len;
4031                 (*pskb)->len      += data_len;
4032                 (*pskb)->truesize += data_len;
4033                 (*pfrag)++;
4034         }
4035         return 0;
4036 }
4037
4038 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4039                 struct qdio_buffer *buffer,
4040                 struct qdio_buffer_element **__element, int *__offset,
4041                 struct qeth_hdr **hdr)
4042 {
4043         struct qdio_buffer_element *element = *__element;
4044         int offset = *__offset;
4045         struct sk_buff *skb = NULL;
4046         int skb_len = 0;
4047         void *data_ptr;
4048         int data_len;
4049         int headroom = 0;
4050         int use_rx_sg = 0;
4051         int frag = 0;
4052
4053         /* qeth_hdr must not cross element boundaries */
4054         if (element->length < offset + sizeof(struct qeth_hdr)) {
4055                 if (qeth_is_last_sbale(element))
4056                         return NULL;
4057                 element++;
4058                 offset = 0;
4059                 if (element->length < sizeof(struct qeth_hdr))
4060                         return NULL;
4061         }
4062         *hdr = element->addr + offset;
4063
4064         offset += sizeof(struct qeth_hdr);
4065         switch ((*hdr)->hdr.l2.id) {
4066         case QETH_HEADER_TYPE_LAYER2:
4067                 skb_len = (*hdr)->hdr.l2.pkt_length;
4068                 break;
4069         case QETH_HEADER_TYPE_LAYER3:
4070                 skb_len = (*hdr)->hdr.l3.length;
4071                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4072                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4073                         headroom = TR_HLEN;
4074                 else
4075                         headroom = ETH_HLEN;
4076                 break;
4077         case QETH_HEADER_TYPE_OSN:
4078                 skb_len = (*hdr)->hdr.osn.pdu_length;
4079                 headroom = sizeof(struct qeth_hdr);
4080                 break;
4081         default:
4082                 break;
4083         }
4084
4085         if (!skb_len)
4086                 return NULL;
4087
4088         if ((skb_len >= card->options.rx_sg_cb) &&
4089             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4090             (!atomic_read(&card->force_alloc_skb))) {
4091                 use_rx_sg = 1;
4092         } else {
4093                 skb = dev_alloc_skb(skb_len + headroom);
4094                 if (!skb)
4095                         goto no_mem;
4096                 if (headroom)
4097                         skb_reserve(skb, headroom);
4098         }
4099
4100         data_ptr = element->addr + offset;
4101         while (skb_len) {
4102                 data_len = min(skb_len, (int)(element->length - offset));
4103                 if (data_len) {
4104                         if (use_rx_sg) {
4105                                 if (qeth_create_skb_frag(element, &skb, offset,
4106                                     &frag, data_len))
4107                                         goto no_mem;
4108                         } else {
4109                                 memcpy(skb_put(skb, data_len), data_ptr,
4110                                         data_len);
4111                         }
4112                 }
4113                 skb_len -= data_len;
4114                 if (skb_len) {
4115                         if (qeth_is_last_sbale(element)) {
4116                                 QETH_CARD_TEXT(card, 4, "unexeob");
4117                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4118                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4119                                         CARD_BUS_ID(card));
4120                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4121                                 dev_kfree_skb_any(skb);
4122                                 card->stats.rx_errors++;
4123                                 return NULL;
4124                         }
4125                         element++;
4126                         offset = 0;
4127                         data_ptr = element->addr;
4128                 } else {
4129                         offset += data_len;
4130                 }
4131         }
4132         *__element = element;
4133         *__offset = offset;
4134         if (use_rx_sg && card->options.performance_stats) {
4135                 card->perf_stats.sg_skbs_rx++;
4136                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4137         }
4138         return skb;
4139 no_mem:
4140         if (net_ratelimit()) {
4141                 QETH_CARD_TEXT(card, 2, "noskbmem");
4142         }
4143         card->stats.rx_dropped++;
4144         return NULL;
4145 }
4146 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4147
4148 static void qeth_unregister_dbf_views(void)
4149 {
4150         int x;
4151         for (x = 0; x < QETH_DBF_INFOS; x++) {
4152                 debug_unregister(qeth_dbf[x].id);
4153                 qeth_dbf[x].id = NULL;
4154         }
4155 }
4156
4157 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4158 {
4159         char dbf_txt_buf[32];
4160         va_list args;
4161
4162         if (level > id->level)
4163                 return;
4164         va_start(args, fmt);
4165         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4166         va_end(args);
4167         debug_text_event(id, level, dbf_txt_buf);
4168 }
4169 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4170
4171 static int qeth_register_dbf_views(void)
4172 {
4173         int ret;
4174         int x;
4175
4176         for (x = 0; x < QETH_DBF_INFOS; x++) {
4177                 /* register the areas */
4178                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4179                                                 qeth_dbf[x].pages,
4180                                                 qeth_dbf[x].areas,
4181                                                 qeth_dbf[x].len);
4182                 if (qeth_dbf[x].id == NULL) {
4183                         qeth_unregister_dbf_views();
4184                         return -ENOMEM;
4185                 }
4186
4187                 /* register a view */
4188                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4189                 if (ret) {
4190                         qeth_unregister_dbf_views();
4191                         return ret;
4192                 }
4193
4194                 /* set a passing level */
4195                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4196         }
4197
4198         return 0;
4199 }
4200
4201 int qeth_core_load_discipline(struct qeth_card *card,
4202                 enum qeth_discipline_id discipline)
4203 {
4204         int rc = 0;
4205         switch (discipline) {
4206         case QETH_DISCIPLINE_LAYER3:
4207                 card->discipline.ccwgdriver = try_then_request_module(
4208                         symbol_get(qeth_l3_ccwgroup_driver),
4209                         "qeth_l3");
4210                 break;
4211         case QETH_DISCIPLINE_LAYER2:
4212                 card->discipline.ccwgdriver = try_then_request_module(
4213                         symbol_get(qeth_l2_ccwgroup_driver),
4214                         "qeth_l2");
4215                 break;
4216         }
4217         if (!card->discipline.ccwgdriver) {
4218                 dev_err(&card->gdev->dev, "There is no kernel module to "
4219                         "support discipline %d\n", discipline);
4220                 rc = -EINVAL;
4221         }
4222         return rc;
4223 }
4224
4225 void qeth_core_free_discipline(struct qeth_card *card)
4226 {
4227         if (card->options.layer2)
4228                 symbol_put(qeth_l2_ccwgroup_driver);
4229         else
4230                 symbol_put(qeth_l3_ccwgroup_driver);
4231         card->discipline.ccwgdriver = NULL;
4232 }
4233
4234 static void qeth_determine_capabilities(struct qeth_card *card)
4235 {
4236         int rc;
4237         int length;
4238         char *prcd;
4239
4240         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4241         rc = ccw_device_set_online(CARD_DDEV(card));
4242         if (rc) {
4243                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4244                 goto out;
4245         }
4246
4247
4248         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4249         if (rc) {
4250                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4251                         dev_name(&card->gdev->dev), rc);
4252                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4253                 goto out_offline;
4254         }
4255         qeth_configure_unitaddr(card, prcd);
4256         qeth_configure_blkt_default(card, prcd);
4257         kfree(prcd);
4258
4259         rc = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
4260         if (rc)
4261                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4262
4263 out_offline:
4264         ccw_device_set_offline(CARD_DDEV(card));
4265 out:
4266         return;
4267 }
4268
4269 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4270 {
4271         struct qeth_card *card;
4272         struct device *dev;
4273         int rc;
4274         unsigned long flags;
4275         char dbf_name[20];
4276
4277         QETH_DBF_TEXT(SETUP, 2, "probedev");
4278
4279         dev = &gdev->dev;
4280         if (!get_device(dev))
4281                 return -ENODEV;
4282
4283         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4284
4285         card = qeth_alloc_card();
4286         if (!card) {
4287                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4288                 rc = -ENOMEM;
4289                 goto err_dev;
4290         }
4291
4292         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4293                 dev_name(&gdev->dev));
4294         card->debug = debug_register(dbf_name, 2, 1, 8);
4295         if (!card->debug) {
4296                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4297                 rc = -ENOMEM;
4298                 goto err_card;
4299         }
4300         debug_register_view(card->debug, &debug_hex_ascii_view);
4301
4302         card->read.ccwdev  = gdev->cdev[0];
4303         card->write.ccwdev = gdev->cdev[1];
4304         card->data.ccwdev  = gdev->cdev[2];
4305         dev_set_drvdata(&gdev->dev, card);
4306         card->gdev = gdev;
4307         gdev->cdev[0]->handler = qeth_irq;
4308         gdev->cdev[1]->handler = qeth_irq;
4309         gdev->cdev[2]->handler = qeth_irq;
4310
4311         rc = qeth_determine_card_type(card);
4312         if (rc) {
4313                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4314                 goto err_dbf;
4315         }
4316         rc = qeth_setup_card(card);
4317         if (rc) {
4318                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4319                 goto err_dbf;
4320         }
4321
4322         if (card->info.type == QETH_CARD_TYPE_OSN)
4323                 rc = qeth_core_create_osn_attributes(dev);
4324         else
4325                 rc = qeth_core_create_device_attributes(dev);
4326         if (rc)
4327                 goto err_dbf;
4328         switch (card->info.type) {
4329         case QETH_CARD_TYPE_OSN:
4330         case QETH_CARD_TYPE_OSM:
4331                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4332                 if (rc)
4333                         goto err_attr;
4334                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4335                 if (rc)
4336                         goto err_disc;
4337         case QETH_CARD_TYPE_OSD:
4338         case QETH_CARD_TYPE_OSX:
4339         default:
4340                 break;
4341         }
4342
4343         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4344         list_add_tail(&card->list, &qeth_core_card_list.list);
4345         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4346
4347         qeth_determine_capabilities(card);
4348         return 0;
4349
4350 err_disc:
4351         qeth_core_free_discipline(card);
4352 err_attr:
4353         if (card->info.type == QETH_CARD_TYPE_OSN)
4354                 qeth_core_remove_osn_attributes(dev);
4355         else
4356                 qeth_core_remove_device_attributes(dev);
4357 err_dbf:
4358         debug_unregister(card->debug);
4359 err_card:
4360         qeth_core_free_card(card);
4361 err_dev:
4362         put_device(dev);
4363         return rc;
4364 }
4365
4366 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4367 {
4368         unsigned long flags;
4369         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4370
4371         QETH_DBF_TEXT(SETUP, 2, "removedv");
4372         if (card->discipline.ccwgdriver) {
4373                 card->discipline.ccwgdriver->remove(gdev);
4374                 qeth_core_free_discipline(card);
4375         }
4376
4377         if (card->info.type == QETH_CARD_TYPE_OSN) {
4378                 qeth_core_remove_osn_attributes(&gdev->dev);
4379         } else {
4380                 qeth_core_remove_device_attributes(&gdev->dev);
4381         }
4382         debug_unregister(card->debug);
4383         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4384         list_del(&card->list);
4385         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4386         qeth_core_free_card(card);
4387         dev_set_drvdata(&gdev->dev, NULL);
4388         put_device(&gdev->dev);
4389         return;
4390 }
4391
4392 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4393 {
4394         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4395         int rc = 0;
4396         int def_discipline;
4397
4398         if (!card->discipline.ccwgdriver) {
4399                 if (card->info.type == QETH_CARD_TYPE_IQD)
4400                         def_discipline = QETH_DISCIPLINE_LAYER3;
4401                 else
4402                         def_discipline = QETH_DISCIPLINE_LAYER2;
4403                 rc = qeth_core_load_discipline(card, def_discipline);
4404                 if (rc)
4405                         goto err;
4406                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4407                 if (rc)
4408                         goto err;
4409         }
4410         rc = card->discipline.ccwgdriver->set_online(gdev);
4411 err:
4412         return rc;
4413 }
4414
4415 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4416 {
4417         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4418         return card->discipline.ccwgdriver->set_offline(gdev);
4419 }
4420
4421 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4422 {
4423         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4424         if (card->discipline.ccwgdriver &&
4425             card->discipline.ccwgdriver->shutdown)
4426                 card->discipline.ccwgdriver->shutdown(gdev);
4427 }
4428
4429 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4430 {
4431         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4432         if (card->discipline.ccwgdriver &&
4433             card->discipline.ccwgdriver->prepare)
4434                 return card->discipline.ccwgdriver->prepare(gdev);
4435         return 0;
4436 }
4437
4438 static void qeth_core_complete(struct ccwgroup_device *gdev)
4439 {
4440         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4441         if (card->discipline.ccwgdriver &&
4442             card->discipline.ccwgdriver->complete)
4443                 card->discipline.ccwgdriver->complete(gdev);
4444 }
4445
4446 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4447 {
4448         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4449         if (card->discipline.ccwgdriver &&
4450             card->discipline.ccwgdriver->freeze)
4451                 return card->discipline.ccwgdriver->freeze(gdev);
4452         return 0;
4453 }
4454
4455 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4456 {
4457         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4458         if (card->discipline.ccwgdriver &&
4459             card->discipline.ccwgdriver->thaw)
4460                 return card->discipline.ccwgdriver->thaw(gdev);
4461         return 0;
4462 }
4463
4464 static int qeth_core_restore(struct ccwgroup_device *gdev)
4465 {
4466         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4467         if (card->discipline.ccwgdriver &&
4468             card->discipline.ccwgdriver->restore)
4469                 return card->discipline.ccwgdriver->restore(gdev);
4470         return 0;
4471 }
4472
4473 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4474         .owner = THIS_MODULE,
4475         .name = "qeth",
4476         .driver_id = 0xD8C5E3C8,
4477         .probe = qeth_core_probe_device,
4478         .remove = qeth_core_remove_device,
4479         .set_online = qeth_core_set_online,
4480         .set_offline = qeth_core_set_offline,
4481         .shutdown = qeth_core_shutdown,
4482         .prepare = qeth_core_prepare,
4483         .complete = qeth_core_complete,
4484         .freeze = qeth_core_freeze,
4485         .thaw = qeth_core_thaw,
4486         .restore = qeth_core_restore,
4487 };
4488
4489 static ssize_t
4490 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4491                            size_t count)
4492 {
4493         int err;
4494         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4495                                         qeth_core_ccwgroup_driver.driver_id);
4496         if (err)
4497                 return err;
4498         else
4499                 return count;
4500 }
4501
4502 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4503
4504 static struct {
4505         const char str[ETH_GSTRING_LEN];
4506 } qeth_ethtool_stats_keys[] = {
4507 /*  0 */{"rx skbs"},
4508         {"rx buffers"},
4509         {"tx skbs"},
4510         {"tx buffers"},
4511         {"tx skbs no packing"},
4512         {"tx buffers no packing"},
4513         {"tx skbs packing"},
4514         {"tx buffers packing"},
4515         {"tx sg skbs"},
4516         {"tx sg frags"},
4517 /* 10 */{"rx sg skbs"},
4518         {"rx sg frags"},
4519         {"rx sg page allocs"},
4520         {"tx large kbytes"},
4521         {"tx large count"},
4522         {"tx pk state ch n->p"},
4523         {"tx pk state ch p->n"},
4524         {"tx pk watermark low"},
4525         {"tx pk watermark high"},
4526         {"queue 0 buffer usage"},
4527 /* 20 */{"queue 1 buffer usage"},
4528         {"queue 2 buffer usage"},
4529         {"queue 3 buffer usage"},
4530         {"rx handler time"},
4531         {"rx handler count"},
4532         {"rx do_QDIO time"},
4533         {"rx do_QDIO count"},
4534         {"tx handler time"},
4535         {"tx handler count"},
4536         {"tx time"},
4537 /* 30 */{"tx count"},
4538         {"tx do_QDIO time"},
4539         {"tx do_QDIO count"},
4540         {"tx csum"},
4541         {"tx lin"},
4542 };
4543
4544 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4545 {
4546         switch (stringset) {
4547         case ETH_SS_STATS:
4548                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4549         default:
4550                 return -EINVAL;
4551         }
4552 }
4553 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4554
4555 void qeth_core_get_ethtool_stats(struct net_device *dev,
4556                 struct ethtool_stats *stats, u64 *data)
4557 {
4558         struct qeth_card *card = dev->ml_priv;
4559         data[0] = card->stats.rx_packets -
4560                                 card->perf_stats.initial_rx_packets;
4561         data[1] = card->perf_stats.bufs_rec;
4562         data[2] = card->stats.tx_packets -
4563                                 card->perf_stats.initial_tx_packets;
4564         data[3] = card->perf_stats.bufs_sent;
4565         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4566                         - card->perf_stats.skbs_sent_pack;
4567         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4568         data[6] = card->perf_stats.skbs_sent_pack;
4569         data[7] = card->perf_stats.bufs_sent_pack;
4570         data[8] = card->perf_stats.sg_skbs_sent;
4571         data[9] = card->perf_stats.sg_frags_sent;
4572         data[10] = card->perf_stats.sg_skbs_rx;
4573         data[11] = card->perf_stats.sg_frags_rx;
4574         data[12] = card->perf_stats.sg_alloc_page_rx;
4575         data[13] = (card->perf_stats.large_send_bytes >> 10);
4576         data[14] = card->perf_stats.large_send_cnt;
4577         data[15] = card->perf_stats.sc_dp_p;
4578         data[16] = card->perf_stats.sc_p_dp;
4579         data[17] = QETH_LOW_WATERMARK_PACK;
4580         data[18] = QETH_HIGH_WATERMARK_PACK;
4581         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4582         data[20] = (card->qdio.no_out_queues > 1) ?
4583                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4584         data[21] = (card->qdio.no_out_queues > 2) ?
4585                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4586         data[22] = (card->qdio.no_out_queues > 3) ?
4587                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4588         data[23] = card->perf_stats.inbound_time;
4589         data[24] = card->perf_stats.inbound_cnt;
4590         data[25] = card->perf_stats.inbound_do_qdio_time;
4591         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4592         data[27] = card->perf_stats.outbound_handler_time;
4593         data[28] = card->perf_stats.outbound_handler_cnt;
4594         data[29] = card->perf_stats.outbound_time;
4595         data[30] = card->perf_stats.outbound_cnt;
4596         data[31] = card->perf_stats.outbound_do_qdio_time;
4597         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4598         data[33] = card->perf_stats.tx_csum;
4599         data[34] = card->perf_stats.tx_lin;
4600 }
4601 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4602
4603 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4604 {
4605         switch (stringset) {
4606         case ETH_SS_STATS:
4607                 memcpy(data, &qeth_ethtool_stats_keys,
4608                         sizeof(qeth_ethtool_stats_keys));
4609                 break;
4610         default:
4611                 WARN_ON(1);
4612                 break;
4613         }
4614 }
4615 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4616
4617 void qeth_core_get_drvinfo(struct net_device *dev,
4618                 struct ethtool_drvinfo *info)
4619 {
4620         struct qeth_card *card = dev->ml_priv;
4621         if (card->options.layer2)
4622                 strcpy(info->driver, "qeth_l2");
4623         else
4624                 strcpy(info->driver, "qeth_l3");
4625
4626         strcpy(info->version, "1.0");
4627         strcpy(info->fw_version, card->info.mcl_level);
4628         sprintf(info->bus_info, "%s/%s/%s",
4629                         CARD_RDEV_ID(card),
4630                         CARD_WDEV_ID(card),
4631                         CARD_DDEV_ID(card));
4632 }
4633 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4634
4635 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4636                                         struct ethtool_cmd *ecmd)
4637 {
4638         struct qeth_card *card = netdev->ml_priv;
4639         enum qeth_link_types link_type;
4640
4641         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4642                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4643         else
4644                 link_type = card->info.link_type;
4645
4646         ecmd->transceiver = XCVR_INTERNAL;
4647         ecmd->supported = SUPPORTED_Autoneg;
4648         ecmd->advertising = ADVERTISED_Autoneg;
4649         ecmd->duplex = DUPLEX_FULL;
4650         ecmd->autoneg = AUTONEG_ENABLE;
4651
4652         switch (link_type) {
4653         case QETH_LINK_TYPE_FAST_ETH:
4654         case QETH_LINK_TYPE_LANE_ETH100:
4655                 ecmd->supported |= SUPPORTED_10baseT_Half |
4656                                         SUPPORTED_10baseT_Full |
4657                                         SUPPORTED_100baseT_Half |
4658                                         SUPPORTED_100baseT_Full |
4659                                         SUPPORTED_TP;
4660                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4661                                         ADVERTISED_10baseT_Full |
4662                                         ADVERTISED_100baseT_Half |
4663                                         ADVERTISED_100baseT_Full |
4664                                         ADVERTISED_TP;
4665                 ecmd->speed = SPEED_100;
4666                 ecmd->port = PORT_TP;
4667                 break;
4668
4669         case QETH_LINK_TYPE_GBIT_ETH:
4670         case QETH_LINK_TYPE_LANE_ETH1000:
4671                 ecmd->supported |= SUPPORTED_10baseT_Half |
4672                                         SUPPORTED_10baseT_Full |
4673                                         SUPPORTED_100baseT_Half |
4674                                         SUPPORTED_100baseT_Full |
4675                                         SUPPORTED_1000baseT_Half |
4676                                         SUPPORTED_1000baseT_Full |
4677                                         SUPPORTED_FIBRE;
4678                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4679                                         ADVERTISED_10baseT_Full |
4680                                         ADVERTISED_100baseT_Half |
4681                                         ADVERTISED_100baseT_Full |
4682                                         ADVERTISED_1000baseT_Half |
4683                                         ADVERTISED_1000baseT_Full |
4684                                         ADVERTISED_FIBRE;
4685                 ecmd->speed = SPEED_1000;
4686                 ecmd->port = PORT_FIBRE;
4687                 break;
4688
4689         case QETH_LINK_TYPE_10GBIT_ETH:
4690                 ecmd->supported |= SUPPORTED_10baseT_Half |
4691                                         SUPPORTED_10baseT_Full |
4692                                         SUPPORTED_100baseT_Half |
4693                                         SUPPORTED_100baseT_Full |
4694                                         SUPPORTED_1000baseT_Half |
4695                                         SUPPORTED_1000baseT_Full |
4696                                         SUPPORTED_10000baseT_Full |
4697                                         SUPPORTED_FIBRE;
4698                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4699                                         ADVERTISED_10baseT_Full |
4700                                         ADVERTISED_100baseT_Half |
4701                                         ADVERTISED_100baseT_Full |
4702                                         ADVERTISED_1000baseT_Half |
4703                                         ADVERTISED_1000baseT_Full |
4704                                         ADVERTISED_10000baseT_Full |
4705                                         ADVERTISED_FIBRE;
4706                 ecmd->speed = SPEED_10000;
4707                 ecmd->port = PORT_FIBRE;
4708                 break;
4709
4710         default:
4711                 ecmd->supported |= SUPPORTED_10baseT_Half |
4712                                         SUPPORTED_10baseT_Full |
4713                                         SUPPORTED_TP;
4714                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4715                                         ADVERTISED_10baseT_Full |
4716                                         ADVERTISED_TP;
4717                 ecmd->speed = SPEED_10;
4718                 ecmd->port = PORT_TP;
4719         }
4720
4721         return 0;
4722 }
4723 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4724
4725 static int __init qeth_core_init(void)
4726 {
4727         int rc;
4728
4729         pr_info("loading core functions\n");
4730         INIT_LIST_HEAD(&qeth_core_card_list.list);
4731         rwlock_init(&qeth_core_card_list.rwlock);
4732
4733         rc = qeth_register_dbf_views();
4734         if (rc)
4735                 goto out_err;
4736         rc = ccw_driver_register(&qeth_ccw_driver);
4737         if (rc)
4738                 goto ccw_err;
4739         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4740         if (rc)
4741                 goto ccwgroup_err;
4742         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4743                                 &driver_attr_group);
4744         if (rc)
4745                 goto driver_err;
4746         qeth_core_root_dev = root_device_register("qeth");
4747         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4748         if (rc)
4749                 goto register_err;
4750
4751         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4752                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4753         if (!qeth_core_header_cache) {
4754                 rc = -ENOMEM;
4755                 goto slab_err;
4756         }
4757
4758         return 0;
4759 slab_err:
4760         root_device_unregister(qeth_core_root_dev);
4761 register_err:
4762         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4763                            &driver_attr_group);
4764 driver_err:
4765         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4766 ccwgroup_err:
4767         ccw_driver_unregister(&qeth_ccw_driver);
4768 ccw_err:
4769         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4770         qeth_unregister_dbf_views();
4771 out_err:
4772         pr_err("Initializing the qeth device driver failed\n");
4773         return rc;
4774 }
4775
4776 static void __exit qeth_core_exit(void)
4777 {
4778         root_device_unregister(qeth_core_root_dev);
4779         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4780                            &driver_attr_group);
4781         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4782         ccw_driver_unregister(&qeth_ccw_driver);
4783         kmem_cache_destroy(qeth_core_header_cache);
4784         qeth_unregister_dbf_views();
4785         pr_info("core functions removed\n");
4786 }
4787
4788 module_init(qeth_core_init);
4789 module_exit(qeth_core_exit);
4790 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4791 MODULE_DESCRIPTION("qeth core functions");
4792 MODULE_LICENSE("GPL");