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_TRACE] = {"qeth_trace",
  38                                 4, 1,   8, 3, &debug_hex_ascii_view, NULL},
  39         [QETH_DBF_MSG]   = {"qeth_msg",
  40                                 8, 1, 128, 3, &debug_sprintf_view,   NULL},
  41         [QETH_DBF_SENSE] = {"qeth_sense",
  42                                 2, 1,  64, 2, &debug_hex_ascii_view, NULL},
  43         [QETH_DBF_MISC]  = {"qeth_misc",
  44                                 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
  45         [QETH_DBF_CTRL]  = {"qeth_control",
  46                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  47 };
  48 EXPORT_SYMBOL_GPL(qeth_dbf);
  49
  50 struct qeth_card_list_struct qeth_core_card_list;
  51 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  52 struct kmem_cache *qeth_core_header_cache;
  53 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  54
  55 static struct device *qeth_core_root_dev;
  56 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
  57 static struct lock_class_key qdio_out_skb_queue_key;
  58
  59 static void qeth_send_control_data_cb(struct qeth_channel *,
  60                         struct qeth_cmd_buffer *);
  61 static int qeth_issue_next_read(struct qeth_card *);
  62 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  63 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  64 static void qeth_free_buffer_pool(struct qeth_card *);
  65 static int qeth_qdio_establish(struct qeth_card *);
  66
  67
  68 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
  69                 struct qdio_buffer *buffer, int is_tso,
  70                 int *next_element_to_fill)
  71 {
  72         struct skb_frag_struct *frag;
  73         int fragno;
  74         unsigned long addr;
  75         int element, cnt, dlen;
  76
  77         fragno = skb_shinfo(skb)->nr_frags;
  78         element = *next_element_to_fill;
  79         dlen = 0;
  80
  81         if (is_tso)
  82                 buffer->element[element].flags =
  83                         SBAL_FLAGS_MIDDLE_FRAG;
  84         else
  85                 buffer->element[element].flags =
  86                         SBAL_FLAGS_FIRST_FRAG;
  87         dlen = skb->len - skb->data_len;
  88         if (dlen) {
  89                 buffer->element[element].addr = skb->data;
  90                 buffer->element[element].length = dlen;
  91                 element++;
  92         }
  93         for (cnt = 0; cnt < fragno; cnt++) {
  94                 frag = &skb_shinfo(skb)->frags[cnt];
  95                 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
  96                         frag->page_offset;
  97                 buffer->element[element].addr = (char *)addr;
  98                 buffer->element[element].length = frag->size;
  99                 if (cnt < (fragno - 1))
 100                         buffer->element[element].flags =
 101                                 SBAL_FLAGS_MIDDLE_FRAG;
 102                 else
 103                         buffer->element[element].flags =
 104                                 SBAL_FLAGS_LAST_FRAG;
 105                 element++;
 106         }
 107         *next_element_to_fill = element;
 108 }
 109
 110 static inline const char *qeth_get_cardname(struct qeth_card *card)
 111 {
 112         if (card->info.guestlan) {
 113                 switch (card->info.type) {
 114                 case QETH_CARD_TYPE_OSAE:
 115                         return " Guest LAN QDIO";
 116                 case QETH_CARD_TYPE_IQD:
 117                         return " Guest LAN Hiper";
 118                 default:
 119                         return " unknown";
 120                 }
 121         } else {
 122                 switch (card->info.type) {
 123                 case QETH_CARD_TYPE_OSAE:
 124                         return " OSD Express";
 125                 case QETH_CARD_TYPE_IQD:
 126                         return " HiperSockets";
 127                 case QETH_CARD_TYPE_OSN:
 128                         return " OSN QDIO";
 129                 default:
 130                         return " unknown";
 131                 }
 132         }
 133         return " n/a";
 134 }
 135
 136 /* max length to be returned: 14 */
 137 const char *qeth_get_cardname_short(struct qeth_card *card)
 138 {
 139         if (card->info.guestlan) {
 140                 switch (card->info.type) {
 141                 case QETH_CARD_TYPE_OSAE:
 142                         return "GuestLAN QDIO";
 143                 case QETH_CARD_TYPE_IQD:
 144                         return "GuestLAN Hiper";
 145                 default:
 146                         return "unknown";
 147                 }
 148         } else {
 149                 switch (card->info.type) {
 150                 case QETH_CARD_TYPE_OSAE:
 151                         switch (card->info.link_type) {
 152                         case QETH_LINK_TYPE_FAST_ETH:
 153                                 return "OSD_100";
 154                         case QETH_LINK_TYPE_HSTR:
 155                                 return "HSTR";
 156                         case QETH_LINK_TYPE_GBIT_ETH:
 157                                 return "OSD_1000";
 158                         case QETH_LINK_TYPE_10GBIT_ETH:
 159                                 return "OSD_10GIG";
 160                         case QETH_LINK_TYPE_LANE_ETH100:
 161                                 return "OSD_FE_LANE";
 162                         case QETH_LINK_TYPE_LANE_TR:
 163                                 return "OSD_TR_LANE";
 164                         case QETH_LINK_TYPE_LANE_ETH1000:
 165                                 return "OSD_GbE_LANE";
 166                         case QETH_LINK_TYPE_LANE:
 167                                 return "OSD_ATM_LANE";
 168                         default:
 169                                 return "OSD_Express";
 170                         }
 171                 case QETH_CARD_TYPE_IQD:
 172                         return "HiperSockets";
 173                 case QETH_CARD_TYPE_OSN:
 174                         return "OSN";
 175                 default:
 176                         return "unknown";
 177                 }
 178         }
 179         return "n/a";
 180 }
 181
 182 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 183                          int clear_start_mask)
 184 {
 185         unsigned long flags;
 186
 187         spin_lock_irqsave(&card->thread_mask_lock, flags);
 188         card->thread_allowed_mask = threads;
 189         if (clear_start_mask)
 190                 card->thread_start_mask &= threads;
 191         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 192         wake_up(&card->wait_q);
 193 }
 194 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 195
 196 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 197 {
 198         unsigned long flags;
 199         int rc = 0;
 200
 201         spin_lock_irqsave(&card->thread_mask_lock, flags);
 202         rc = (card->thread_running_mask & threads);
 203         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 204         return rc;
 205 }
 206 EXPORT_SYMBOL_GPL(qeth_threads_running);
 207
 208 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 209 {
 210         return wait_event_interruptible(card->wait_q,
 211                         qeth_threads_running(card, threads) == 0);
 212 }
 213 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 214
 215 void qeth_clear_working_pool_list(struct qeth_card *card)
 216 {
 217         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 218
 219         QETH_DBF_TEXT(TRACE, 5, "clwrklst");
 220         list_for_each_entry_safe(pool_entry, tmp,
 221                             &card->qdio.in_buf_pool.entry_list, list){
 222                         list_del(&pool_entry->list);
 223         }
 224 }
 225 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 226
 227 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 228 {
 229         struct qeth_buffer_pool_entry *pool_entry;
 230         void *ptr;
 231         int i, j;
 232
 233         QETH_DBF_TEXT(TRACE, 5, "alocpool");
 234         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 235                 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
 236                 if (!pool_entry) {
 237                         qeth_free_buffer_pool(card);
 238                         return -ENOMEM;
 239                 }
 240                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 241                         ptr = (void *) __get_free_page(GFP_KERNEL);
 242                         if (!ptr) {
 243                                 while (j > 0)
 244                                         free_page((unsigned long)
 245                                                   pool_entry->elements[--j]);
 246                                 kfree(pool_entry);
 247                                 qeth_free_buffer_pool(card);
 248                                 return -ENOMEM;
 249                         }
 250                         pool_entry->elements[j] = ptr;
 251                 }
 252                 list_add(&pool_entry->init_list,
 253                          &card->qdio.init_pool.entry_list);
 254         }
 255         return 0;
 256 }
 257
 258 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 259 {
 260         QETH_DBF_TEXT(TRACE, 2, "realcbp");
 261
 262         if ((card->state != CARD_STATE_DOWN) &&
 263             (card->state != CARD_STATE_RECOVER))
 264                 return -EPERM;
 265
 266         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 267         qeth_clear_working_pool_list(card);
 268         qeth_free_buffer_pool(card);
 269         card->qdio.in_buf_pool.buf_count = bufcnt;
 270         card->qdio.init_pool.buf_count = bufcnt;
 271         return qeth_alloc_buffer_pool(card);
 272 }
 273 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 274
 275 static int qeth_issue_next_read(struct qeth_card *card)
 276 {
 277         int rc;
 278         struct qeth_cmd_buffer *iob;
 279
 280         QETH_DBF_TEXT(TRACE, 5, "issnxrd");
 281         if (card->read.state != CH_STATE_UP)
 282                 return -EIO;
 283         iob = qeth_get_buffer(&card->read);
 284         if (!iob) {
 285                 dev_warn(&card->gdev->dev, "The qeth device driver "
 286                         "failed to recover an error on the device\n");
 287                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 288                         "available\n", dev_name(&card->gdev->dev));
 289                 return -ENOMEM;
 290         }
 291         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 292         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
 293         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 294                               (addr_t) iob, 0, 0);
 295         if (rc) {
 296                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 297                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 298                 atomic_set(&card->read.irq_pending, 0);
 299                 qeth_schedule_recovery(card);
 300                 wake_up(&card->wait_q);
 301         }
 302         return rc;
 303 }
 304
 305 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 306 {
 307         struct qeth_reply *reply;
 308
 309         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 310         if (reply) {
 311                 atomic_set(&reply->refcnt, 1);
 312                 atomic_set(&reply->received, 0);
 313                 reply->card = card;
 314         };
 315         return reply;
 316 }
 317
 318 static void qeth_get_reply(struct qeth_reply *reply)
 319 {
 320         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 321         atomic_inc(&reply->refcnt);
 322 }
 323
 324 static void qeth_put_reply(struct qeth_reply *reply)
 325 {
 326         WARN_ON(atomic_read(&reply->refcnt) <= 0);
 327         if (atomic_dec_and_test(&reply->refcnt))
 328                 kfree(reply);
 329 }
 330
 331 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 332                 struct qeth_card *card)
 333 {
 334         char *ipa_name;
 335         int com = cmd->hdr.command;
 336         ipa_name = qeth_get_ipa_cmd_name(com);
 337         if (rc)
 338                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
 339                                 ipa_name, com, QETH_CARD_IFNAME(card),
 340                                         rc, qeth_get_ipa_msg(rc));
 341         else
 342                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
 343                                 ipa_name, com, QETH_CARD_IFNAME(card));
 344 }
 345
 346 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 347                 struct qeth_cmd_buffer *iob)
 348 {
 349         struct qeth_ipa_cmd *cmd = NULL;
 350
 351         QETH_DBF_TEXT(TRACE, 5, "chkipad");
 352         if (IS_IPA(iob->data)) {
 353                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 354                 if (IS_IPA_REPLY(cmd)) {
 355                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 356                             cmd->hdr.command != IPA_CMD_DELCCID &&
 357                             cmd->hdr.command != IPA_CMD_MODCCID &&
 358                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 359                                 qeth_issue_ipa_msg(cmd,
 360                                                 cmd->hdr.return_code, card);
 361                         return cmd;
 362                 } else {
 363                         switch (cmd->hdr.command) {
 364                         case IPA_CMD_STOPLAN:
 365                                 dev_warn(&card->gdev->dev,
 366                                            "The link for interface %s on CHPID"
 367                                            " 0x%X failed\n",
 368                                            QETH_CARD_IFNAME(card),
 369                                            card->info.chpid);
 370                                 card->lan_online = 0;
 371                                 if (card->dev && netif_carrier_ok(card->dev))
 372                                         netif_carrier_off(card->dev);
 373                                 return NULL;
 374                         case IPA_CMD_STARTLAN:
 375                                 dev_info(&card->gdev->dev,
 376                                            "The link for %s on CHPID 0x%X has"
 377                                            " been restored\n",
 378                                            QETH_CARD_IFNAME(card),
 379                                            card->info.chpid);
 380                                 netif_carrier_on(card->dev);
 381                                 card->lan_online = 1;
 382                                 qeth_schedule_recovery(card);
 383                                 return NULL;
 384                         case IPA_CMD_MODCCID:
 385                                 return cmd;
 386                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 387                                 QETH_DBF_TEXT(TRACE, 3, "irla");
 388                                 break;
 389                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 390                                 QETH_DBF_TEXT(TRACE, 3, "urla");
 391                                 break;
 392                         default:
 393                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 394                                            "but not a reply!\n");
 395                                 break;
 396                         }
 397                 }
 398         }
 399         return cmd;
 400 }
 401
 402 void qeth_clear_ipacmd_list(struct qeth_card *card)
 403 {
 404         struct qeth_reply *reply, *r;
 405         unsigned long flags;
 406
 407         QETH_DBF_TEXT(TRACE, 4, "clipalst");
 408
 409         spin_lock_irqsave(&card->lock, flags);
 410         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 411                 qeth_get_reply(reply);
 412                 reply->rc = -EIO;
 413                 atomic_inc(&reply->received);
 414                 list_del_init(&reply->list);
 415                 wake_up(&reply->wait_q);
 416                 qeth_put_reply(reply);
 417         }
 418         spin_unlock_irqrestore(&card->lock, flags);
 419 }
 420 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 421
 422 static int qeth_check_idx_response(unsigned char *buffer)
 423 {
 424         if (!buffer)
 425                 return 0;
 426
 427         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 428         if ((buffer[2] & 0xc0) == 0xc0) {
 429                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
 430                            "with cause code 0x%02x%s\n",
 431                            buffer[4],
 432                            ((buffer[4] == 0x22) ?
 433                             " -- try another portname" : ""));
 434                 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
 435                 QETH_DBF_TEXT(TRACE, 2, " idxterm");
 436                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 437                 return -EIO;
 438         }
 439         return 0;
 440 }
 441
 442 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 443                 __u32 len)
 444 {
 445         struct qeth_card *card;
 446
 447         QETH_DBF_TEXT(TRACE, 4, "setupccw");
 448         card = CARD_FROM_CDEV(channel->ccwdev);
 449         if (channel == &card->read)
 450                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 451         else
 452                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 453         channel->ccw.count = len;
 454         channel->ccw.cda = (__u32) __pa(iob);
 455 }
 456
 457 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 458 {
 459         __u8 index;
 460
 461         QETH_DBF_TEXT(TRACE, 6, "getbuff");
 462         index = channel->io_buf_no;
 463         do {
 464                 if (channel->iob[index].state == BUF_STATE_FREE) {
 465                         channel->iob[index].state = BUF_STATE_LOCKED;
 466                         channel->io_buf_no = (channel->io_buf_no + 1) %
 467                                 QETH_CMD_BUFFER_NO;
 468                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 469                         return channel->iob + index;
 470                 }
 471                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 472         } while (index != channel->io_buf_no);
 473
 474         return NULL;
 475 }
 476
 477 void qeth_release_buffer(struct qeth_channel *channel,
 478                 struct qeth_cmd_buffer *iob)
 479 {
 480         unsigned long flags;
 481
 482         QETH_DBF_TEXT(TRACE, 6, "relbuff");
 483         spin_lock_irqsave(&channel->iob_lock, flags);
 484         memset(iob->data, 0, QETH_BUFSIZE);
 485         iob->state = BUF_STATE_FREE;
 486         iob->callback = qeth_send_control_data_cb;
 487         iob->rc = 0;
 488         spin_unlock_irqrestore(&channel->iob_lock, flags);
 489 }
 490 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 491
 492 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 493 {
 494         struct qeth_cmd_buffer *buffer = NULL;
 495         unsigned long flags;
 496
 497         spin_lock_irqsave(&channel->iob_lock, flags);
 498         buffer = __qeth_get_buffer(channel);
 499         spin_unlock_irqrestore(&channel->iob_lock, flags);
 500         return buffer;
 501 }
 502
 503 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 504 {
 505         struct qeth_cmd_buffer *buffer;
 506         wait_event(channel->wait_q,
 507                    ((buffer = qeth_get_buffer(channel)) != NULL));
 508         return buffer;
 509 }
 510 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 511
 512 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 513 {
 514         int cnt;
 515
 516         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 517                 qeth_release_buffer(channel, &channel->iob[cnt]);
 518         channel->buf_no = 0;
 519         channel->io_buf_no = 0;
 520 }
 521 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 522
 523 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 524                   struct qeth_cmd_buffer *iob)
 525 {
 526         struct qeth_card *card;
 527         struct qeth_reply *reply, *r;
 528         struct qeth_ipa_cmd *cmd;
 529         unsigned long flags;
 530         int keep_reply;
 531
 532         QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
 533
 534         card = CARD_FROM_CDEV(channel->ccwdev);
 535         if (qeth_check_idx_response(iob->data)) {
 536                 qeth_clear_ipacmd_list(card);
 537                 if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6)
 538                         dev_err(&card->gdev->dev,
 539                                 "The qeth device is not configured "
 540                                 "for the OSI layer required by z/VM\n");
 541                 else
 542                         qeth_schedule_recovery(card);
 543                 goto out;
 544         }
 545
 546         cmd = qeth_check_ipa_data(card, iob);
 547         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 548                 goto out;
 549         /*in case of OSN : check if cmd is set */
 550         if (card->info.type == QETH_CARD_TYPE_OSN &&
 551             cmd &&
 552             cmd->hdr.command != IPA_CMD_STARTLAN &&
 553             card->osn_info.assist_cb != NULL) {
 554                 card->osn_info.assist_cb(card->dev, cmd);
 555                 goto out;
 556         }
 557
 558         spin_lock_irqsave(&card->lock, flags);
 559         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 560                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 561                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 562                         qeth_get_reply(reply);
 563                         list_del_init(&reply->list);
 564                         spin_unlock_irqrestore(&card->lock, flags);
 565                         keep_reply = 0;
 566                         if (reply->callback != NULL) {
 567                                 if (cmd) {
 568                                         reply->offset = (__u16)((char *)cmd -
 569                                                         (char *)iob->data);
 570                                         keep_reply = reply->callback(card,
 571                                                         reply,
 572                                                         (unsigned long)cmd);
 573                                 } else
 574                                         keep_reply = reply->callback(card,
 575                                                         reply,
 576                                                         (unsigned long)iob);
 577                         }
 578                         if (cmd)
 579                                 reply->rc = (u16) cmd->hdr.return_code;
 580                         else if (iob->rc)
 581                                 reply->rc = iob->rc;
 582                         if (keep_reply) {
 583                                 spin_lock_irqsave(&card->lock, flags);
 584                                 list_add_tail(&reply->list,
 585                                               &card->cmd_waiter_list);
 586                                 spin_unlock_irqrestore(&card->lock, flags);
 587                         } else {
 588                                 atomic_inc(&reply->received);
 589                                 wake_up(&reply->wait_q);
 590                         }
 591                         qeth_put_reply(reply);
 592                         goto out;
 593                 }
 594         }
 595         spin_unlock_irqrestore(&card->lock, flags);
 596 out:
 597         memcpy(&card->seqno.pdu_hdr_ack,
 598                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 599                 QETH_SEQ_NO_LENGTH);
 600         qeth_release_buffer(channel, iob);
 601 }
 602
 603 static int qeth_setup_channel(struct qeth_channel *channel)
 604 {
 605         int cnt;
 606
 607         QETH_DBF_TEXT(SETUP, 2, "setupch");
 608         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 609                 channel->iob[cnt].data = (char *)
 610                         kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 611                 if (channel->iob[cnt].data == NULL)
 612                         break;
 613                 channel->iob[cnt].state = BUF_STATE_FREE;
 614                 channel->iob[cnt].channel = channel;
 615                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 616                 channel->iob[cnt].rc = 0;
 617         }
 618         if (cnt < QETH_CMD_BUFFER_NO) {
 619                 while (cnt-- > 0)
 620                         kfree(channel->iob[cnt].data);
 621                 return -ENOMEM;
 622         }
 623         channel->buf_no = 0;
 624         channel->io_buf_no = 0;
 625         atomic_set(&channel->irq_pending, 0);
 626         spin_lock_init(&channel->iob_lock);
 627
 628         init_waitqueue_head(&channel->wait_q);
 629         return 0;
 630 }
 631
 632 static int qeth_set_thread_start_bit(struct qeth_card *card,
 633                 unsigned long thread)
 634 {
 635         unsigned long flags;
 636
 637         spin_lock_irqsave(&card->thread_mask_lock, flags);
 638         if (!(card->thread_allowed_mask & thread) ||
 639               (card->thread_start_mask & thread)) {
 640                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 641                 return -EPERM;
 642         }
 643         card->thread_start_mask |= thread;
 644         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 645         return 0;
 646 }
 647
 648 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 649 {
 650         unsigned long flags;
 651
 652         spin_lock_irqsave(&card->thread_mask_lock, flags);
 653         card->thread_start_mask &= ~thread;
 654         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 655         wake_up(&card->wait_q);
 656 }
 657 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 658
 659 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 660 {
 661         unsigned long flags;
 662
 663         spin_lock_irqsave(&card->thread_mask_lock, flags);
 664         card->thread_running_mask &= ~thread;
 665         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 666         wake_up(&card->wait_q);
 667 }
 668 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 669
 670 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 671 {
 672         unsigned long flags;
 673         int rc = 0;
 674
 675         spin_lock_irqsave(&card->thread_mask_lock, flags);
 676         if (card->thread_start_mask & thread) {
 677                 if ((card->thread_allowed_mask & thread) &&
 678                     !(card->thread_running_mask & thread)) {
 679                         rc = 1;
 680                         card->thread_start_mask &= ~thread;
 681                         card->thread_running_mask |= thread;
 682                 } else
 683                         rc = -EPERM;
 684         }
 685         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 686         return rc;
 687 }
 688
 689 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 690 {
 691         int rc = 0;
 692
 693         wait_event(card->wait_q,
 694                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 695         return rc;
 696 }
 697 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
 698
 699 void qeth_schedule_recovery(struct qeth_card *card)
 700 {
 701         QETH_DBF_TEXT(TRACE, 2, "startrec");
 702         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
 703                 schedule_work(&card->kernel_thread_starter);
 704 }
 705 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
 706
 707 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
 708 {
 709         int dstat, cstat;
 710         char *sense;
 711
 712         sense = (char *) irb->ecw;
 713         cstat = irb->scsw.cmd.cstat;
 714         dstat = irb->scsw.cmd.dstat;
 715
 716         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
 717                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
 718                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
 719                 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
 720                 dev_warn(&cdev->dev, "The qeth device driver "
 721                         "failed to recover an error on the device\n");
 722                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
 723                         dev_name(&cdev->dev), dstat, cstat);
 724                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
 725                                 16, 1, irb, 64, 1);
 726                 return 1;
 727         }
 728
 729         if (dstat & DEV_STAT_UNIT_CHECK) {
 730                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
 731                     SENSE_RESETTING_EVENT_FLAG) {
 732                         QETH_DBF_TEXT(TRACE, 2, "REVIND");
 733                         return 1;
 734                 }
 735                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
 736                     SENSE_COMMAND_REJECT_FLAG) {
 737                         QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
 738                         return 1;
 739                 }
 740                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
 741                         QETH_DBF_TEXT(TRACE, 2, "AFFE");
 742                         return 1;
 743                 }
 744                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
 745                         QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
 746                         return 0;
 747                 }
 748                 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
 749                         return 1;
 750         }
 751         return 0;
 752 }
 753
 754 static long __qeth_check_irb_error(struct ccw_device *cdev,
 755                 unsigned long intparm, struct irb *irb)
 756 {
 757         if (!IS_ERR(irb))
 758                 return 0;
 759
 760         switch (PTR_ERR(irb)) {
 761         case -EIO:
 762                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
 763                         dev_name(&cdev->dev));
 764                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 765                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
 766                 break;
 767         case -ETIMEDOUT:
 768                 dev_warn(&cdev->dev, "A hardware operation timed out"
 769                         " on the device\n");
 770                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 771                 QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
 772                 if (intparm == QETH_RCD_PARM) {
 773                         struct qeth_card *card = CARD_FROM_CDEV(cdev);
 774
 775                         if (card && (card->data.ccwdev == cdev)) {
 776                                 card->data.state = CH_STATE_DOWN;
 777                                 wake_up(&card->wait_q);
 778                         }
 779                 }
 780                 break;
 781         default:
 782                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
 783                         dev_name(&cdev->dev), PTR_ERR(irb));
 784                 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
 785                 QETH_DBF_TEXT(TRACE, 2, "  rc???");
 786         }
 787         return PTR_ERR(irb);
 788 }
 789
 790 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 791                 struct irb *irb)
 792 {
 793         int rc;
 794         int cstat, dstat;
 795         struct qeth_cmd_buffer *buffer;
 796         struct qeth_channel *channel;
 797         struct qeth_card *card;
 798         struct qeth_cmd_buffer *iob;
 799         __u8 index;
 800
 801         QETH_DBF_TEXT(TRACE, 5, "irq");
 802
 803         if (__qeth_check_irb_error(cdev, intparm, irb))
 804                 return;
 805         cstat = irb->scsw.cmd.cstat;
 806         dstat = irb->scsw.cmd.dstat;
 807
 808         card = CARD_FROM_CDEV(cdev);
 809         if (!card)
 810                 return;
 811
 812         if (card->read.ccwdev == cdev) {
 813                 channel = &card->read;
 814                 QETH_DBF_TEXT(TRACE, 5, "read");
 815         } else if (card->write.ccwdev == cdev) {
 816                 channel = &card->write;
 817                 QETH_DBF_TEXT(TRACE, 5, "write");
 818         } else {
 819                 channel = &card->data;
 820                 QETH_DBF_TEXT(TRACE, 5, "data");
 821         }
 822         atomic_set(&channel->irq_pending, 0);
 823
 824         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
 825                 channel->state = CH_STATE_STOPPED;
 826
 827         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
 828                 channel->state = CH_STATE_HALTED;
 829
 830         /*let's wake up immediately on data channel*/
 831         if ((channel == &card->data) && (intparm != 0) &&
 832             (intparm != QETH_RCD_PARM))
 833                 goto out;
 834
 835         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
 836                 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
 837                 /* we don't have to handle this further */
 838                 intparm = 0;
 839         }
 840         if (intparm == QETH_HALT_CHANNEL_PARM) {
 841                 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
 842                 /* we don't have to handle this further */
 843                 intparm = 0;
 844         }
 845         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
 846             (dstat & DEV_STAT_UNIT_CHECK) ||
 847             (cstat)) {
 848                 if (irb->esw.esw0.erw.cons) {
 849                         dev_warn(&channel->ccwdev->dev,
 850                                 "The qeth device driver failed to recover "
 851                                 "an error on the device\n");
 852                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
 853                                 "0x%X dstat 0x%X\n",
 854                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
 855                         print_hex_dump(KERN_WARNING, "qeth: irb ",
 856                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
 857                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
 858                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
 859                 }
 860                 if (intparm == QETH_RCD_PARM) {
 861                         channel->state = CH_STATE_DOWN;
 862                         goto out;
 863                 }
 864                 rc = qeth_get_problem(cdev, irb);
 865                 if (rc) {
 866                         qeth_clear_ipacmd_list(card);
 867                         qeth_schedule_recovery(card);
 868                         goto out;
 869                 }
 870         }
 871
 872         if (intparm == QETH_RCD_PARM) {
 873                 channel->state = CH_STATE_RCD_DONE;
 874                 goto out;
 875         }
 876         if (intparm) {
 877                 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
 878                 buffer->state = BUF_STATE_PROCESSED;
 879         }
 880         if (channel == &card->data)
 881                 return;
 882         if (channel == &card->read &&
 883             channel->state == CH_STATE_UP)
 884                 qeth_issue_next_read(card);
 885
 886         iob = channel->iob;
 887         index = channel->buf_no;
 888         while (iob[index].state == BUF_STATE_PROCESSED) {
 889                 if (iob[index].callback != NULL)
 890                         iob[index].callback(channel, iob + index);
 891
 892                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 893         }
 894         channel->buf_no = index;
 895 out:
 896         wake_up(&card->wait_q);
 897         return;
 898 }
 899
 900 static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 901                  struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb)
 902 {
 903         int i;
 904         struct sk_buff *skb;
 905
 906         /* is PCI flag set on buffer? */
 907         if (buf->buffer->element[0].flags & 0x40)
 908                 atomic_dec(&queue->set_pci_flags_count);
 909
 910         if (!qeth_skip_skb) {
 911                 skb = skb_dequeue(&buf->skb_list);
 912                 while (skb) {
 913                         atomic_dec(&skb->users);
 914                         dev_kfree_skb_any(skb);
 915                         skb = skb_dequeue(&buf->skb_list);
 916                 }
 917         }
 918         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
 919                 if (buf->buffer->element[i].addr && buf->is_header[i])
 920                         kmem_cache_free(qeth_core_header_cache,
 921                                 buf->buffer->element[i].addr);
 922                 buf->is_header[i] = 0;
 923                 buf->buffer->element[i].length = 0;
 924                 buf->buffer->element[i].addr = NULL;
 925                 buf->buffer->element[i].flags = 0;
 926         }
 927         buf->buffer->element[15].flags = 0;
 928         buf->next_element_to_fill = 0;
 929         atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
 930 }
 931
 932 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 933                 struct qeth_qdio_out_buffer *buf)
 934 {
 935         __qeth_clear_output_buffer(queue, buf, 0);
 936 }
 937
 938 void qeth_clear_qdio_buffers(struct qeth_card *card)
 939 {
 940         int i, j;
 941
 942         QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
 943         /* clear outbound buffers to free skbs */
 944         for (i = 0; i < card->qdio.no_out_queues; ++i)
 945                 if (card->qdio.out_qs[i]) {
 946                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 947                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 948                                                 &card->qdio.out_qs[i]->bufs[j]);
 949                 }
 950 }
 951 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
 952
 953 static void qeth_free_buffer_pool(struct qeth_card *card)
 954 {
 955         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 956         int i = 0;
 957         QETH_DBF_TEXT(TRACE, 5, "freepool");
 958         list_for_each_entry_safe(pool_entry, tmp,
 959                                  &card->qdio.init_pool.entry_list, init_list){
 960                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
 961                         free_page((unsigned long)pool_entry->elements[i]);
 962                 list_del(&pool_entry->init_list);
 963                 kfree(pool_entry);
 964         }
 965 }
 966
 967 static void qeth_free_qdio_buffers(struct qeth_card *card)
 968 {
 969         int i, j;
 970
 971         QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
 972         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 973                 QETH_QDIO_UNINITIALIZED)
 974                 return;
 975         kfree(card->qdio.in_q);
 976         card->qdio.in_q = NULL;
 977         /* inbound buffer pool */
 978         qeth_free_buffer_pool(card);
 979         /* free outbound qdio_qs */
 980         if (card->qdio.out_qs) {
 981                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 982                         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
 983                                 qeth_clear_output_buffer(card->qdio.out_qs[i],
 984                                                 &card->qdio.out_qs[i]->bufs[j]);
 985                         kfree(card->qdio.out_qs[i]);
 986                 }
 987                 kfree(card->qdio.out_qs);
 988                 card->qdio.out_qs = NULL;
 989         }
 990 }
 991
 992 static void qeth_clean_channel(struct qeth_channel *channel)
 993 {
 994         int cnt;
 995
 996         QETH_DBF_TEXT(SETUP, 2, "freech");
 997         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 998                 kfree(channel->iob[cnt].data);
 999 }
1000
1001 static int qeth_is_1920_device(struct qeth_card *card)
1002 {
1003         int single_queue = 0;
1004         struct ccw_device *ccwdev;
1005         struct channelPath_dsc {
1006                 u8 flags;
1007                 u8 lsn;
1008                 u8 desc;
1009                 u8 chpid;
1010                 u8 swla;
1011                 u8 zeroes;
1012                 u8 chla;
1013                 u8 chpp;
1014         } *chp_dsc;
1015
1016         QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1017
1018         ccwdev = card->data.ccwdev;
1019         chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1020         if (chp_dsc != NULL) {
1021                 /* CHPP field bit 6 == 1 -> single queue */
1022                 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1023                 kfree(chp_dsc);
1024         }
1025         QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1026         return single_queue;
1027 }
1028
1029 static void qeth_init_qdio_info(struct qeth_card *card)
1030 {
1031         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1032         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1033         /* inbound */
1034         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1035         card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1036         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1037         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1038         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1039 }
1040
1041 static void qeth_set_intial_options(struct qeth_card *card)
1042 {
1043         card->options.route4.type = NO_ROUTER;
1044         card->options.route6.type = NO_ROUTER;
1045         card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1046         card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1047         card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1048         card->options.fake_broadcast = 0;
1049         card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1050         card->options.performance_stats = 0;
1051         card->options.rx_sg_cb = QETH_RX_SG_CB;
1052         card->options.isolation = ISOLATION_MODE_NONE;
1053 }
1054
1055 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1056 {
1057         unsigned long flags;
1058         int rc = 0;
1059
1060         spin_lock_irqsave(&card->thread_mask_lock, flags);
1061         QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
1062                         (u8) card->thread_start_mask,
1063                         (u8) card->thread_allowed_mask,
1064                         (u8) card->thread_running_mask);
1065         rc = (card->thread_start_mask & thread);
1066         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1067         return rc;
1068 }
1069
1070 static void qeth_start_kernel_thread(struct work_struct *work)
1071 {
1072         struct qeth_card *card = container_of(work, struct qeth_card,
1073                                         kernel_thread_starter);
1074         QETH_DBF_TEXT(TRACE , 2, "strthrd");
1075
1076         if (card->read.state != CH_STATE_UP &&
1077             card->write.state != CH_STATE_UP)
1078                 return;
1079         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1080                 kthread_run(card->discipline.recover, (void *) card,
1081                                 "qeth_recover");
1082 }
1083
1084 static int qeth_setup_card(struct qeth_card *card)
1085 {
1086
1087         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1088         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1089
1090         card->read.state  = CH_STATE_DOWN;
1091         card->write.state = CH_STATE_DOWN;
1092         card->data.state  = CH_STATE_DOWN;
1093         card->state = CARD_STATE_DOWN;
1094         card->lan_online = 0;
1095         card->use_hard_stop = 0;
1096         card->dev = NULL;
1097         spin_lock_init(&card->vlanlock);
1098         spin_lock_init(&card->mclock);
1099         card->vlangrp = NULL;
1100         spin_lock_init(&card->lock);
1101         spin_lock_init(&card->ip_lock);
1102         spin_lock_init(&card->thread_mask_lock);
1103         card->thread_start_mask = 0;
1104         card->thread_allowed_mask = 0;
1105         card->thread_running_mask = 0;
1106         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1107         INIT_LIST_HEAD(&card->ip_list);
1108         INIT_LIST_HEAD(card->ip_tbd_list);
1109         INIT_LIST_HEAD(&card->cmd_waiter_list);
1110         init_waitqueue_head(&card->wait_q);
1111         /* intial options */
1112         qeth_set_intial_options(card);
1113         /* IP address takeover */
1114         INIT_LIST_HEAD(&card->ipato.entries);
1115         card->ipato.enabled = 0;
1116         card->ipato.invert4 = 0;
1117         card->ipato.invert6 = 0;
1118         /* init QDIO stuff */
1119         qeth_init_qdio_info(card);
1120         return 0;
1121 }
1122
1123 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1124 {
1125         struct qeth_card *card = container_of(slr, struct qeth_card,
1126                                         qeth_service_level);
1127         if (card->info.mcl_level[0])
1128                 seq_printf(m, "qeth: %s firmware level %s\n",
1129                         CARD_BUS_ID(card), card->info.mcl_level);
1130 }
1131
1132 static struct qeth_card *qeth_alloc_card(void)
1133 {
1134         struct qeth_card *card;
1135
1136         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1137         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1138         if (!card)
1139                 goto out;
1140         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1141         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1142         if (!card->ip_tbd_list) {
1143                 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1144                 goto out_card;
1145         }
1146         if (qeth_setup_channel(&card->read))
1147                 goto out_ip;
1148         if (qeth_setup_channel(&card->write))
1149                 goto out_channel;
1150         card->options.layer2 = -1;
1151         card->qeth_service_level.seq_print = qeth_core_sl_print;
1152         register_service_level(&card->qeth_service_level);
1153         return card;
1154
1155 out_channel:
1156         qeth_clean_channel(&card->read);
1157 out_ip:
1158         kfree(card->ip_tbd_list);
1159 out_card:
1160         kfree(card);
1161 out:
1162         return NULL;
1163 }
1164
1165 static int qeth_determine_card_type(struct qeth_card *card)
1166 {
1167         int i = 0;
1168
1169         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1170
1171         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1172         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1173         while (known_devices[i][4]) {
1174                 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1175                     (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1176                         card->info.type = known_devices[i][4];
1177                         card->qdio.no_out_queues = known_devices[i][8];
1178                         card->info.is_multicast_different = known_devices[i][9];
1179                         if (qeth_is_1920_device(card)) {
1180                                 dev_info(&card->gdev->dev,
1181                                         "Priority Queueing not supported\n");
1182                                 card->qdio.no_out_queues = 1;
1183                                 card->qdio.default_out_queue = 0;
1184                         }
1185                         return 0;
1186                 }
1187                 i++;
1188         }
1189         card->info.type = QETH_CARD_TYPE_UNKNOWN;
1190         dev_err(&card->gdev->dev, "The adapter hardware is of an "
1191                 "unknown type\n");
1192         return -ENOENT;
1193 }
1194
1195 static int qeth_clear_channel(struct qeth_channel *channel)
1196 {
1197         unsigned long flags;
1198         struct qeth_card *card;
1199         int rc;
1200
1201         QETH_DBF_TEXT(TRACE, 3, "clearch");
1202         card = CARD_FROM_CDEV(channel->ccwdev);
1203         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1204         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1205         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1206
1207         if (rc)
1208                 return rc;
1209         rc = wait_event_interruptible_timeout(card->wait_q,
1210                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1211         if (rc == -ERESTARTSYS)
1212                 return rc;
1213         if (channel->state != CH_STATE_STOPPED)
1214                 return -ETIME;
1215         channel->state = CH_STATE_DOWN;
1216         return 0;
1217 }
1218
1219 static int qeth_halt_channel(struct qeth_channel *channel)
1220 {
1221         unsigned long flags;
1222         struct qeth_card *card;
1223         int rc;
1224
1225         QETH_DBF_TEXT(TRACE, 3, "haltch");
1226         card = CARD_FROM_CDEV(channel->ccwdev);
1227         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1228         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1229         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1230
1231         if (rc)
1232                 return rc;
1233         rc = wait_event_interruptible_timeout(card->wait_q,
1234                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1235         if (rc == -ERESTARTSYS)
1236                 return rc;
1237         if (channel->state != CH_STATE_HALTED)
1238                 return -ETIME;
1239         return 0;
1240 }
1241
1242 static int qeth_halt_channels(struct qeth_card *card)
1243 {
1244         int rc1 = 0, rc2 = 0, rc3 = 0;
1245
1246         QETH_DBF_TEXT(TRACE, 3, "haltchs");
1247         rc1 = qeth_halt_channel(&card->read);
1248         rc2 = qeth_halt_channel(&card->write);
1249         rc3 = qeth_halt_channel(&card->data);
1250         if (rc1)
1251                 return rc1;
1252         if (rc2)
1253                 return rc2;
1254         return rc3;
1255 }
1256
1257 static int qeth_clear_channels(struct qeth_card *card)
1258 {
1259         int rc1 = 0, rc2 = 0, rc3 = 0;
1260
1261         QETH_DBF_TEXT(TRACE, 3, "clearchs");
1262         rc1 = qeth_clear_channel(&card->read);
1263         rc2 = qeth_clear_channel(&card->write);
1264         rc3 = qeth_clear_channel(&card->data);
1265         if (rc1)
1266                 return rc1;
1267         if (rc2)
1268                 return rc2;
1269         return rc3;
1270 }
1271
1272 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1273 {
1274         int rc = 0;
1275
1276         QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1277         QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1278
1279         if (halt)
1280                 rc = qeth_halt_channels(card);
1281         if (rc)
1282                 return rc;
1283         return qeth_clear_channels(card);
1284 }
1285
1286 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1287 {
1288         int rc = 0;
1289
1290         QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1291         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1292                 QETH_QDIO_CLEANING)) {
1293         case QETH_QDIO_ESTABLISHED:
1294                 if (card->info.type == QETH_CARD_TYPE_IQD)
1295                         rc = qdio_shutdown(CARD_DDEV(card),
1296                                 QDIO_FLAG_CLEANUP_USING_HALT);
1297                 else
1298                         rc = qdio_shutdown(CARD_DDEV(card),
1299                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1300                 if (rc)
1301                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1302                 qdio_free(CARD_DDEV(card));
1303                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1304                 break;
1305         case QETH_QDIO_CLEANING:
1306                 return rc;
1307         default:
1308                 break;
1309         }
1310         rc = qeth_clear_halt_card(card, use_halt);
1311         if (rc)
1312                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1313         card->state = CARD_STATE_DOWN;
1314         return rc;
1315 }
1316 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1317
1318 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1319                                int *length)
1320 {
1321         struct ciw *ciw;
1322         char *rcd_buf;
1323         int ret;
1324         struct qeth_channel *channel = &card->data;
1325         unsigned long flags;
1326
1327         /*
1328          * scan for RCD command in extended SenseID data
1329          */
1330         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1331         if (!ciw || ciw->cmd == 0)
1332                 return -EOPNOTSUPP;
1333         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1334         if (!rcd_buf)
1335                 return -ENOMEM;
1336
1337         channel->ccw.cmd_code = ciw->cmd;
1338         channel->ccw.cda = (__u32) __pa(rcd_buf);
1339         channel->ccw.count = ciw->count;
1340         channel->ccw.flags = CCW_FLAG_SLI;
1341         channel->state = CH_STATE_RCD;
1342         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1343         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1344                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1345                                        QETH_RCD_TIMEOUT);
1346         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1347         if (!ret)
1348                 wait_event(card->wait_q,
1349                            (channel->state == CH_STATE_RCD_DONE ||
1350                             channel->state == CH_STATE_DOWN));
1351         if (channel->state == CH_STATE_DOWN)
1352                 ret = -EIO;
1353         else
1354                 channel->state = CH_STATE_DOWN;
1355         if (ret) {
1356                 kfree(rcd_buf);
1357                 *buffer = NULL;
1358                 *length = 0;
1359         } else {
1360                 *length = ciw->count;
1361                 *buffer = rcd_buf;
1362         }
1363         return ret;
1364 }
1365
1366 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1367 {
1368         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1369         card->info.chpid = prcd[30];
1370         card->info.unit_addr2 = prcd[31];
1371         card->info.cula = prcd[63];
1372         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1373                                (prcd[0x11] == _ascebc['M']));
1374 }
1375
1376 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1377 {
1378         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1379
1380         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1381                 card->info.blkt.time_total = 250;
1382                 card->info.blkt.inter_packet = 5;
1383                 card->info.blkt.inter_packet_jumbo = 15;
1384         } else {
1385                 card->info.blkt.time_total = 0;
1386                 card->info.blkt.inter_packet = 0;
1387                 card->info.blkt.inter_packet_jumbo = 0;
1388         }
1389 }
1390
1391 static void qeth_init_tokens(struct qeth_card *card)
1392 {
1393         card->token.issuer_rm_w = 0x00010103UL;
1394         card->token.cm_filter_w = 0x00010108UL;
1395         card->token.cm_connection_w = 0x0001010aUL;
1396         card->token.ulp_filter_w = 0x0001010bUL;
1397         card->token.ulp_connection_w = 0x0001010dUL;
1398 }
1399
1400 static void qeth_init_func_level(struct qeth_card *card)
1401 {
1402         if (card->ipato.enabled) {
1403                 if (card->info.type == QETH_CARD_TYPE_IQD)
1404                                 card->info.func_level =
1405                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1406                 else
1407                                 card->info.func_level =
1408                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1409         } else {
1410                 if (card->info.type == QETH_CARD_TYPE_IQD)
1411                 /*FIXME:why do we have same values for  dis and ena for
1412                   osae??? */
1413                         card->info.func_level =
1414                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1415                 else
1416                         card->info.func_level =
1417                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1418         }
1419 }
1420
1421 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1422                 void (*idx_reply_cb)(struct qeth_channel *,
1423                         struct qeth_cmd_buffer *))
1424 {
1425         struct qeth_cmd_buffer *iob;
1426         unsigned long flags;
1427         int rc;
1428         struct qeth_card *card;
1429
1430         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1431         card = CARD_FROM_CDEV(channel->ccwdev);
1432         iob = qeth_get_buffer(channel);
1433         iob->callback = idx_reply_cb;
1434         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1435         channel->ccw.count = QETH_BUFSIZE;
1436         channel->ccw.cda = (__u32) __pa(iob->data);
1437
1438         wait_event(card->wait_q,
1439                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1440         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1441         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1442         rc = ccw_device_start(channel->ccwdev,
1443                               &channel->ccw, (addr_t) iob, 0, 0);
1444         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1445
1446         if (rc) {
1447                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1448                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1449                 atomic_set(&channel->irq_pending, 0);
1450                 wake_up(&card->wait_q);
1451                 return rc;
1452         }
1453         rc = wait_event_interruptible_timeout(card->wait_q,
1454                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1455         if (rc == -ERESTARTSYS)
1456                 return rc;
1457         if (channel->state != CH_STATE_UP) {
1458                 rc = -ETIME;
1459                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1460                 qeth_clear_cmd_buffers(channel);
1461         } else
1462                 rc = 0;
1463         return rc;
1464 }
1465
1466 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1467                 void (*idx_reply_cb)(struct qeth_channel *,
1468                         struct qeth_cmd_buffer *))
1469 {
1470         struct qeth_card *card;
1471         struct qeth_cmd_buffer *iob;
1472         unsigned long flags;
1473         __u16 temp;
1474         __u8 tmp;
1475         int rc;
1476         struct ccw_dev_id temp_devid;
1477
1478         card = CARD_FROM_CDEV(channel->ccwdev);
1479
1480         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1481
1482         iob = qeth_get_buffer(channel);
1483         iob->callback = idx_reply_cb;
1484         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1485         channel->ccw.count = IDX_ACTIVATE_SIZE;
1486         channel->ccw.cda = (__u32) __pa(iob->data);
1487         if (channel == &card->write) {
1488                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1489                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1490                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1491                 card->seqno.trans_hdr++;
1492         } else {
1493                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1494                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1495                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1496         }
1497         tmp = ((__u8)card->info.portno) | 0x80;
1498         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1499         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1500                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1501         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1502                &card->info.func_level, sizeof(__u16));
1503         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1504         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1505         temp = (card->info.cula << 8) + card->info.unit_addr2;
1506         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1507
1508         wait_event(card->wait_q,
1509                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1510         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1511         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1512         rc = ccw_device_start(channel->ccwdev,
1513                               &channel->ccw, (addr_t) iob, 0, 0);
1514         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1515
1516         if (rc) {
1517                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1518                         rc);
1519                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1520                 atomic_set(&channel->irq_pending, 0);
1521                 wake_up(&card->wait_q);
1522                 return rc;
1523         }
1524         rc = wait_event_interruptible_timeout(card->wait_q,
1525                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1526         if (rc == -ERESTARTSYS)
1527                 return rc;
1528         if (channel->state != CH_STATE_ACTIVATING) {
1529                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1530                         " failed to recover an error on the device\n");
1531                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1532                         dev_name(&channel->ccwdev->dev));
1533                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1534                 qeth_clear_cmd_buffers(channel);
1535                 return -ETIME;
1536         }
1537         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1538 }
1539
1540 static int qeth_peer_func_level(int level)
1541 {
1542         if ((level & 0xff) == 8)
1543                 return (level & 0xff) + 0x400;
1544         if (((level >> 8) & 3) == 1)
1545                 return (level & 0xff) + 0x200;
1546         return level;
1547 }
1548
1549 static void qeth_idx_write_cb(struct qeth_channel *channel,
1550                 struct qeth_cmd_buffer *iob)
1551 {
1552         struct qeth_card *card;
1553         __u16 temp;
1554
1555         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1556
1557         if (channel->state == CH_STATE_DOWN) {
1558                 channel->state = CH_STATE_ACTIVATING;
1559                 goto out;
1560         }
1561         card = CARD_FROM_CDEV(channel->ccwdev);
1562
1563         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1564                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1565                         dev_err(&card->write.ccwdev->dev,
1566                                 "The adapter is used exclusively by another "
1567                                 "host\n");
1568                 else
1569                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1570                                 " negative reply\n",
1571                                 dev_name(&card->write.ccwdev->dev));
1572                 goto out;
1573         }
1574         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1575         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1576                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1577                         "function level mismatch (sent: 0x%x, received: "
1578                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1579                         card->info.func_level, temp);
1580                 goto out;
1581         }
1582         channel->state = CH_STATE_UP;
1583 out:
1584         qeth_release_buffer(channel, iob);
1585 }
1586
1587 static void qeth_idx_read_cb(struct qeth_channel *channel,
1588                 struct qeth_cmd_buffer *iob)
1589 {
1590         struct qeth_card *card;
1591         __u16 temp;
1592
1593         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1594         if (channel->state == CH_STATE_DOWN) {
1595                 channel->state = CH_STATE_ACTIVATING;
1596                 goto out;
1597         }
1598
1599         card = CARD_FROM_CDEV(channel->ccwdev);
1600         if (qeth_check_idx_response(iob->data))
1601                         goto out;
1602
1603         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1604                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1605                         dev_err(&card->write.ccwdev->dev,
1606                                 "The adapter is used exclusively by another "
1607                                 "host\n");
1608                 else
1609                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1610                                 " negative reply\n",
1611                                 dev_name(&card->read.ccwdev->dev));
1612                 goto out;
1613         }
1614
1615 /**
1616  * temporary fix for microcode bug
1617  * to revert it,replace OR by AND
1618  */
1619         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1620              (card->info.type == QETH_CARD_TYPE_OSAE))
1621                 card->info.portname_required = 1;
1622
1623         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1624         if (temp != qeth_peer_func_level(card->info.func_level)) {
1625                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1626                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1627                         dev_name(&card->read.ccwdev->dev),
1628                         card->info.func_level, temp);
1629                 goto out;
1630         }
1631         memcpy(&card->token.issuer_rm_r,
1632                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1633                QETH_MPC_TOKEN_LENGTH);
1634         memcpy(&card->info.mcl_level[0],
1635                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1636         channel->state = CH_STATE_UP;
1637 out:
1638         qeth_release_buffer(channel, iob);
1639 }
1640
1641 void qeth_prepare_control_data(struct qeth_card *card, int len,
1642                 struct qeth_cmd_buffer *iob)
1643 {
1644         qeth_setup_ccw(&card->write, iob->data, len);
1645         iob->callback = qeth_release_buffer;
1646
1647         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1648                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1649         card->seqno.trans_hdr++;
1650         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1651                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1652         card->seqno.pdu_hdr++;
1653         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1654                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1655         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1656 }
1657 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1658
1659 int qeth_send_control_data(struct qeth_card *card, int len,
1660                 struct qeth_cmd_buffer *iob,
1661                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1662                         unsigned long),
1663                 void *reply_param)
1664 {
1665         int rc;
1666         unsigned long flags;
1667         struct qeth_reply *reply = NULL;
1668         unsigned long timeout, event_timeout;
1669         struct qeth_ipa_cmd *cmd;
1670
1671         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1672
1673         reply = qeth_alloc_reply(card);
1674         if (!reply) {
1675                 return -ENOMEM;
1676         }
1677         reply->callback = reply_cb;
1678         reply->param = reply_param;
1679         if (card->state == CARD_STATE_DOWN)
1680                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1681         else
1682                 reply->seqno = card->seqno.ipa++;
1683         init_waitqueue_head(&reply->wait_q);
1684         spin_lock_irqsave(&card->lock, flags);
1685         list_add_tail(&reply->list, &card->cmd_waiter_list);
1686         spin_unlock_irqrestore(&card->lock, flags);
1687         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1688
1689         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1690         qeth_prepare_control_data(card, len, iob);
1691
1692         if (IS_IPA(iob->data))
1693                 event_timeout = QETH_IPA_TIMEOUT;
1694         else
1695                 event_timeout = QETH_TIMEOUT;
1696         timeout = jiffies + event_timeout;
1697
1698         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1699         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1700         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1701                               (addr_t) iob, 0, 0);
1702         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1703         if (rc) {
1704                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1705                         "ccw_device_start rc = %i\n",
1706                         dev_name(&card->write.ccwdev->dev), rc);
1707                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1708                 spin_lock_irqsave(&card->lock, flags);
1709                 list_del_init(&reply->list);
1710                 qeth_put_reply(reply);
1711                 spin_unlock_irqrestore(&card->lock, flags);
1712                 qeth_release_buffer(iob->channel, iob);
1713                 atomic_set(&card->write.irq_pending, 0);
1714                 wake_up(&card->wait_q);
1715                 return rc;
1716         }
1717
1718         /* we have only one long running ipassist, since we can ensure
1719            process context of this command we can sleep */
1720         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1721         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1722             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1723                 if (!wait_event_timeout(reply->wait_q,
1724                     atomic_read(&reply->received), event_timeout))
1725                         goto time_err;
1726         } else {
1727                 while (!atomic_read(&reply->received)) {
1728                         if (time_after(jiffies, timeout))
1729                                 goto time_err;
1730                         cpu_relax();
1731                 };
1732         }
1733
1734         rc = reply->rc;
1735         qeth_put_reply(reply);
1736         return rc;
1737
1738 time_err:
1739         spin_lock_irqsave(&reply->card->lock, flags);
1740         list_del_init(&reply->list);
1741         spin_unlock_irqrestore(&reply->card->lock, flags);
1742         reply->rc = -ETIME;
1743         atomic_inc(&reply->received);
1744         wake_up(&reply->wait_q);
1745         rc = reply->rc;
1746         qeth_put_reply(reply);
1747         return rc;
1748 }
1749 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1750
1751 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1752                 unsigned long data)
1753 {
1754         struct qeth_cmd_buffer *iob;
1755
1756         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1757
1758         iob = (struct qeth_cmd_buffer *) data;
1759         memcpy(&card->token.cm_filter_r,
1760                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1761                QETH_MPC_TOKEN_LENGTH);
1762         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1763         return 0;
1764 }
1765
1766 static int qeth_cm_enable(struct qeth_card *card)
1767 {
1768         int rc;
1769         struct qeth_cmd_buffer *iob;
1770
1771         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1772
1773         iob = qeth_wait_for_buffer(&card->write);
1774         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1775         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1776                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1777         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1778                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1779
1780         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1781                                     qeth_cm_enable_cb, NULL);
1782         return rc;
1783 }
1784
1785 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1786                 unsigned long data)
1787 {
1788
1789         struct qeth_cmd_buffer *iob;
1790
1791         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1792
1793         iob = (struct qeth_cmd_buffer *) data;
1794         memcpy(&card->token.cm_connection_r,
1795                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1796                QETH_MPC_TOKEN_LENGTH);
1797         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1798         return 0;
1799 }
1800
1801 static int qeth_cm_setup(struct qeth_card *card)
1802 {
1803         int rc;
1804         struct qeth_cmd_buffer *iob;
1805
1806         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1807
1808         iob = qeth_wait_for_buffer(&card->write);
1809         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1810         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1811                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1812         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1813                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1814         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1815                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1816         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1817                                     qeth_cm_setup_cb, NULL);
1818         return rc;
1819
1820 }
1821
1822 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1823 {
1824         switch (card->info.type) {
1825         case QETH_CARD_TYPE_UNKNOWN:
1826                 return 1500;
1827         case QETH_CARD_TYPE_IQD:
1828                 return card->info.max_mtu;
1829         case QETH_CARD_TYPE_OSAE:
1830                 switch (card->info.link_type) {
1831                 case QETH_LINK_TYPE_HSTR:
1832                 case QETH_LINK_TYPE_LANE_TR:
1833                         return 2000;
1834                 default:
1835                         return 1492;
1836                 }
1837         default:
1838                 return 1500;
1839         }
1840 }
1841
1842 static inline int qeth_get_max_mtu_for_card(int cardtype)
1843 {
1844         switch (cardtype) {
1845
1846         case QETH_CARD_TYPE_UNKNOWN:
1847         case QETH_CARD_TYPE_OSAE:
1848         case QETH_CARD_TYPE_OSN:
1849                 return 61440;
1850         case QETH_CARD_TYPE_IQD:
1851                 return 57344;
1852         default:
1853                 return 1500;
1854         }
1855 }
1856
1857 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1858 {
1859         switch (cardtype) {
1860         case QETH_CARD_TYPE_IQD:
1861                 return 1;
1862         default:
1863                 return 0;
1864         }
1865 }
1866
1867 static inline int qeth_get_mtu_outof_framesize(int framesize)
1868 {
1869         switch (framesize) {
1870         case 0x4000:
1871                 return 8192;
1872         case 0x6000:
1873                 return 16384;
1874         case 0xa000:
1875                 return 32768;
1876         case 0xffff:
1877                 return 57344;
1878         default:
1879                 return 0;
1880         }
1881 }
1882
1883 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1884 {
1885         switch (card->info.type) {
1886         case QETH_CARD_TYPE_OSAE:
1887                 return ((mtu >= 576) && (mtu <= 61440));
1888         case QETH_CARD_TYPE_IQD:
1889                 return ((mtu >= 576) &&
1890                         (mtu <= card->info.max_mtu + 4096 - 32));
1891         case QETH_CARD_TYPE_OSN:
1892         case QETH_CARD_TYPE_UNKNOWN:
1893         default:
1894                 return 1;
1895         }
1896 }
1897
1898 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1899                 unsigned long data)
1900 {
1901
1902         __u16 mtu, framesize;
1903         __u16 len;
1904         __u8 link_type;
1905         struct qeth_cmd_buffer *iob;
1906
1907         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1908
1909         iob = (struct qeth_cmd_buffer *) data;
1910         memcpy(&card->token.ulp_filter_r,
1911                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1912                QETH_MPC_TOKEN_LENGTH);
1913         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1914                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1915                 mtu = qeth_get_mtu_outof_framesize(framesize);
1916                 if (!mtu) {
1917                         iob->rc = -EINVAL;
1918                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1919                         return 0;
1920                 }
1921                 card->info.max_mtu = mtu;
1922                 card->info.initial_mtu = mtu;
1923                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1924         } else {
1925                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1926                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1927                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1928         }
1929
1930         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1931         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1932                 memcpy(&link_type,
1933                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1934                 card->info.link_type = link_type;
1935         } else
1936                 card->info.link_type = 0;
1937         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1938         return 0;
1939 }
1940
1941 static int qeth_ulp_enable(struct qeth_card *card)
1942 {
1943         int rc;
1944         char prot_type;
1945         struct qeth_cmd_buffer *iob;
1946
1947         /*FIXME: trace view callbacks*/
1948         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1949
1950         iob = qeth_wait_for_buffer(&card->write);
1951         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1952
1953         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1954                 (__u8) card->info.portno;
1955         if (card->options.layer2)
1956                 if (card->info.type == QETH_CARD_TYPE_OSN)
1957                         prot_type = QETH_PROT_OSN2;
1958                 else
1959                         prot_type = QETH_PROT_LAYER2;
1960         else
1961                 prot_type = QETH_PROT_TCPIP;
1962
1963         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1964         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1965                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1966         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1967                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1968         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1969                card->info.portname, 9);
1970         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1971                                     qeth_ulp_enable_cb, NULL);
1972         return rc;
1973
1974 }
1975
1976 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1977                 unsigned long data)
1978 {
1979         struct qeth_cmd_buffer *iob;
1980
1981         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1982
1983         iob = (struct qeth_cmd_buffer *) data;
1984         memcpy(&card->token.ulp_connection_r,
1985                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1986                QETH_MPC_TOKEN_LENGTH);
1987         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1988         return 0;
1989 }
1990
1991 static int qeth_ulp_setup(struct qeth_card *card)
1992 {
1993         int rc;
1994         __u16 temp;
1995         struct qeth_cmd_buffer *iob;
1996         struct ccw_dev_id dev_id;
1997
1998         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
1999
2000         iob = qeth_wait_for_buffer(&card->write);
2001         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2002
2003         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2004                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2005         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2006                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2007         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2008                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2009
2010         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2011         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2012         temp = (card->info.cula << 8) + card->info.unit_addr2;
2013         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2014         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2015                                     qeth_ulp_setup_cb, NULL);
2016         return rc;
2017 }
2018
2019 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2020 {
2021         int i, j;
2022
2023         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2024
2025         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2026                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2027                 return 0;
2028
2029         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2030                                   GFP_KERNEL);
2031         if (!card->qdio.in_q)
2032                 goto out_nomem;
2033         QETH_DBF_TEXT(SETUP, 2, "inq");
2034         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2035         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2036         /* give inbound qeth_qdio_buffers their qdio_buffers */
2037         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2038                 card->qdio.in_q->bufs[i].buffer =
2039                         &card->qdio.in_q->qdio_bufs[i];
2040         /* inbound buffer pool */
2041         if (qeth_alloc_buffer_pool(card))
2042                 goto out_freeinq;
2043         /* outbound */
2044         card->qdio.out_qs =
2045                 kmalloc(card->qdio.no_out_queues *
2046                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2047         if (!card->qdio.out_qs)
2048                 goto out_freepool;
2049         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2050                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2051                                                GFP_KERNEL);
2052                 if (!card->qdio.out_qs[i])
2053                         goto out_freeoutq;
2054                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2055                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2056                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2057                 card->qdio.out_qs[i]->queue_no = i;
2058                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2059                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2060                         card->qdio.out_qs[i]->bufs[j].buffer =
2061                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2062                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2063                                             skb_list);
2064                         lockdep_set_class(
2065                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2066                                 &qdio_out_skb_queue_key);
2067                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2068                 }
2069         }
2070         return 0;
2071
2072 out_freeoutq:
2073         while (i > 0)
2074                 kfree(card->qdio.out_qs[--i]);
2075         kfree(card->qdio.out_qs);
2076         card->qdio.out_qs = NULL;
2077 out_freepool:
2078         qeth_free_buffer_pool(card);
2079 out_freeinq:
2080         kfree(card->qdio.in_q);
2081         card->qdio.in_q = NULL;
2082 out_nomem:
2083         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2084         return -ENOMEM;
2085 }
2086
2087 static void qeth_create_qib_param_field(struct qeth_card *card,
2088                 char *param_field)
2089 {
2090
2091         param_field[0] = _ascebc['P'];
2092         param_field[1] = _ascebc['C'];
2093         param_field[2] = _ascebc['I'];
2094         param_field[3] = _ascebc['T'];
2095         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2096         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2097         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2098 }
2099
2100 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2101                 char *param_field)
2102 {
2103         param_field[16] = _ascebc['B'];
2104         param_field[17] = _ascebc['L'];
2105         param_field[18] = _ascebc['K'];
2106         param_field[19] = _ascebc['T'];
2107         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2108         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2109         *((unsigned int *) (&param_field[28])) =
2110                 card->info.blkt.inter_packet_jumbo;
2111 }
2112
2113 static int qeth_qdio_activate(struct qeth_card *card)
2114 {
2115         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2116         return qdio_activate(CARD_DDEV(card));
2117 }
2118
2119 static int qeth_dm_act(struct qeth_card *card)
2120 {
2121         int rc;
2122         struct qeth_cmd_buffer *iob;
2123
2124         QETH_DBF_TEXT(SETUP, 2, "dmact");
2125
2126         iob = qeth_wait_for_buffer(&card->write);
2127         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2128
2129         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2130                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2131         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2132                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2133         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2134         return rc;
2135 }
2136
2137 static int qeth_mpc_initialize(struct qeth_card *card)
2138 {
2139         int rc;
2140
2141         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2142
2143         rc = qeth_issue_next_read(card);
2144         if (rc) {
2145                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2146                 return rc;
2147         }
2148         rc = qeth_cm_enable(card);
2149         if (rc) {
2150                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2151                 goto out_qdio;
2152         }
2153         rc = qeth_cm_setup(card);
2154         if (rc) {
2155                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2156                 goto out_qdio;
2157         }
2158         rc = qeth_ulp_enable(card);
2159         if (rc) {
2160                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2161                 goto out_qdio;
2162         }
2163         rc = qeth_ulp_setup(card);
2164         if (rc) {
2165                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2166                 goto out_qdio;
2167         }
2168         rc = qeth_alloc_qdio_buffers(card);
2169         if (rc) {
2170                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2171                 goto out_qdio;
2172         }
2173         rc = qeth_qdio_establish(card);
2174         if (rc) {
2175                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2176                 qeth_free_qdio_buffers(card);
2177                 goto out_qdio;
2178         }
2179         rc = qeth_qdio_activate(card);
2180         if (rc) {
2181                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2182                 goto out_qdio;
2183         }
2184         rc = qeth_dm_act(card);
2185         if (rc) {
2186                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2187                 goto out_qdio;
2188         }
2189
2190         return 0;
2191 out_qdio:
2192         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2193         return rc;
2194 }
2195
2196 static void qeth_print_status_with_portname(struct qeth_card *card)
2197 {
2198         char dbf_text[15];
2199         int i;
2200
2201         sprintf(dbf_text, "%s", card->info.portname + 1);
2202         for (i = 0; i < 8; i++)
2203                 dbf_text[i] =
2204                         (char) _ebcasc[(__u8) dbf_text[i]];
2205         dbf_text[8] = 0;
2206         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2207                "with link type %s (portname: %s)\n",
2208                qeth_get_cardname(card),
2209                (card->info.mcl_level[0]) ? " (level: " : "",
2210                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2211                (card->info.mcl_level[0]) ? ")" : "",
2212                qeth_get_cardname_short(card),
2213                dbf_text);
2214
2215 }
2216
2217 static void qeth_print_status_no_portname(struct qeth_card *card)
2218 {
2219         if (card->info.portname[0])
2220                 dev_info(&card->gdev->dev, "Device is a%s "
2221                        "card%s%s%s\nwith link type %s "
2222                        "(no portname needed by interface).\n",
2223                        qeth_get_cardname(card),
2224                        (card->info.mcl_level[0]) ? " (level: " : "",
2225                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2226                        (card->info.mcl_level[0]) ? ")" : "",
2227                        qeth_get_cardname_short(card));
2228         else
2229                 dev_info(&card->gdev->dev, "Device is a%s "
2230                        "card%s%s%s\nwith link type %s.\n",
2231                        qeth_get_cardname(card),
2232                        (card->info.mcl_level[0]) ? " (level: " : "",
2233                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2234                        (card->info.mcl_level[0]) ? ")" : "",
2235                        qeth_get_cardname_short(card));
2236 }
2237
2238 void qeth_print_status_message(struct qeth_card *card)
2239 {
2240         switch (card->info.type) {
2241         case QETH_CARD_TYPE_OSAE:
2242                 /* VM will use a non-zero first character
2243                  * to indicate a HiperSockets like reporting
2244                  * of the level OSA sets the first character to zero
2245                  * */
2246                 if (!card->info.mcl_level[0]) {
2247                         sprintf(card->info.mcl_level, "%02x%02x",
2248                                 card->info.mcl_level[2],
2249                                 card->info.mcl_level[3]);
2250
2251                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2252                         break;
2253                 }
2254                 /* fallthrough */
2255         case QETH_CARD_TYPE_IQD:
2256                 if ((card->info.guestlan) ||
2257                     (card->info.mcl_level[0] & 0x80)) {
2258                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2259                                 card->info.mcl_level[0]];
2260                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2261                                 card->info.mcl_level[1]];
2262                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2263                                 card->info.mcl_level[2]];
2264                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2265                                 card->info.mcl_level[3]];
2266                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2267                 }
2268                 break;
2269         default:
2270                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2271         }
2272         if (card->info.portname_required)
2273                 qeth_print_status_with_portname(card);
2274         else
2275                 qeth_print_status_no_portname(card);
2276 }
2277 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2278
2279 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2280 {
2281         struct qeth_buffer_pool_entry *entry;
2282
2283         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2284
2285         list_for_each_entry(entry,
2286                             &card->qdio.init_pool.entry_list, init_list) {
2287                 qeth_put_buffer_pool_entry(card, entry);
2288         }
2289 }
2290
2291 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2292                 struct qeth_card *card)
2293 {
2294         struct list_head *plh;
2295         struct qeth_buffer_pool_entry *entry;
2296         int i, free;
2297         struct page *page;
2298
2299         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2300                 return NULL;
2301
2302         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2303                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2304                 free = 1;
2305                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2306                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2307                                 free = 0;
2308                                 break;
2309                         }
2310                 }
2311                 if (free) {
2312                         list_del_init(&entry->list);
2313                         return entry;
2314                 }
2315         }
2316
2317         /* no free buffer in pool so take first one and swap pages */
2318         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2319                         struct qeth_buffer_pool_entry, list);
2320         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2321                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2322                         page = alloc_page(GFP_ATOMIC);
2323                         if (!page) {
2324                                 return NULL;
2325                         } else {
2326                                 free_page((unsigned long)entry->elements[i]);
2327                                 entry->elements[i] = page_address(page);
2328                                 if (card->options.performance_stats)
2329                                         card->perf_stats.sg_alloc_page_rx++;
2330                         }
2331                 }
2332         }
2333         list_del_init(&entry->list);
2334         return entry;
2335 }
2336
2337 static int qeth_init_input_buffer(struct qeth_card *card,
2338                 struct qeth_qdio_buffer *buf)
2339 {
2340         struct qeth_buffer_pool_entry *pool_entry;
2341         int i;
2342
2343         pool_entry = qeth_find_free_buffer_pool_entry(card);
2344         if (!pool_entry)
2345                 return 1;
2346
2347         /*
2348          * since the buffer is accessed only from the input_tasklet
2349          * there shouldn't be a need to synchronize; also, since we use
2350          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2351          * buffers
2352          */
2353
2354         buf->pool_entry = pool_entry;
2355         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2356                 buf->buffer->element[i].length = PAGE_SIZE;
2357                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2358                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2359                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2360                 else
2361                         buf->buffer->element[i].flags = 0;
2362         }
2363         return 0;
2364 }
2365
2366 int qeth_init_qdio_queues(struct qeth_card *card)
2367 {
2368         int i, j;
2369         int rc;
2370
2371         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2372
2373         /* inbound queue */
2374         memset(card->qdio.in_q->qdio_bufs, 0,
2375                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2376         qeth_initialize_working_pool_list(card);
2377         /*give only as many buffers to hardware as we have buffer pool entries*/
2378         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2379                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2380         card->qdio.in_q->next_buf_to_init =
2381                 card->qdio.in_buf_pool.buf_count - 1;
2382         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2383                      card->qdio.in_buf_pool.buf_count - 1);
2384         if (rc) {
2385                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2386                 return rc;
2387         }
2388         /* outbound queue */
2389         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2390                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2391                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2392                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2393                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2394                                         &card->qdio.out_qs[i]->bufs[j]);
2395                 }
2396                 card->qdio.out_qs[i]->card = card;
2397                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2398                 card->qdio.out_qs[i]->do_pack = 0;
2399                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2400                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2401                 atomic_set(&card->qdio.out_qs[i]->state,
2402                            QETH_OUT_Q_UNLOCKED);
2403         }
2404         return 0;
2405 }
2406 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2407
2408 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2409 {
2410         switch (link_type) {
2411         case QETH_LINK_TYPE_HSTR:
2412                 return 2;
2413         default:
2414                 return 1;
2415         }
2416 }
2417
2418 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2419                 struct qeth_ipa_cmd *cmd, __u8 command,
2420                 enum qeth_prot_versions prot)
2421 {
2422         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2423         cmd->hdr.command = command;
2424         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2425         cmd->hdr.seqno = card->seqno.ipa;
2426         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2427         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2428         if (card->options.layer2)
2429                 cmd->hdr.prim_version_no = 2;
2430         else
2431                 cmd->hdr.prim_version_no = 1;
2432         cmd->hdr.param_count = 1;
2433         cmd->hdr.prot_version = prot;
2434         cmd->hdr.ipa_supported = 0;
2435         cmd->hdr.ipa_enabled = 0;
2436 }
2437
2438 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2439                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2440 {
2441         struct qeth_cmd_buffer *iob;
2442         struct qeth_ipa_cmd *cmd;
2443
2444         iob = qeth_wait_for_buffer(&card->write);
2445         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2446         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2447
2448         return iob;
2449 }
2450 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2451
2452 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2453                 char prot_type)
2454 {
2455         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2456         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2457         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2458                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2459 }
2460 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2461
2462 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2463                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2464                         unsigned long),
2465                 void *reply_param)
2466 {
2467         int rc;
2468         char prot_type;
2469
2470         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2471
2472         if (card->options.layer2)
2473                 if (card->info.type == QETH_CARD_TYPE_OSN)
2474                         prot_type = QETH_PROT_OSN2;
2475                 else
2476                         prot_type = QETH_PROT_LAYER2;
2477         else
2478                 prot_type = QETH_PROT_TCPIP;
2479         qeth_prepare_ipa_cmd(card, iob, prot_type);
2480         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2481                                                 iob, reply_cb, reply_param);
2482         return rc;
2483 }
2484 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2485
2486 static int qeth_send_startstoplan(struct qeth_card *card,
2487                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2488 {
2489         int rc;
2490         struct qeth_cmd_buffer *iob;
2491
2492         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2493         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2494
2495         return rc;
2496 }
2497
2498 int qeth_send_startlan(struct qeth_card *card)
2499 {
2500         int rc;
2501
2502         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2503
2504         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2505         return rc;
2506 }
2507 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2508
2509 int qeth_send_stoplan(struct qeth_card *card)
2510 {
2511         int rc = 0;
2512
2513         /*
2514          * TODO: according to the IPA format document page 14,
2515          * TCP/IP (we!) never issue a STOPLAN
2516          * is this right ?!?
2517          */
2518         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2519
2520         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2521         return rc;
2522 }
2523 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2524
2525 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2526                 struct qeth_reply *reply, unsigned long data)
2527 {
2528         struct qeth_ipa_cmd *cmd;
2529
2530         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2531
2532         cmd = (struct qeth_ipa_cmd *) data;
2533         if (cmd->hdr.return_code == 0)
2534                 cmd->hdr.return_code =
2535                         cmd->data.setadapterparms.hdr.return_code;
2536         return 0;
2537 }
2538 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2539
2540 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2541                 struct qeth_reply *reply, unsigned long data)
2542 {
2543         struct qeth_ipa_cmd *cmd;
2544
2545         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2546
2547         cmd = (struct qeth_ipa_cmd *) data;
2548         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2549                 card->info.link_type =
2550                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2551         card->options.adp.supported_funcs =
2552                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2553         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2554 }
2555
2556 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2557                 __u32 command, __u32 cmdlen)
2558 {
2559         struct qeth_cmd_buffer *iob;
2560         struct qeth_ipa_cmd *cmd;
2561
2562         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2563                                      QETH_PROT_IPV4);
2564         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2565         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2566         cmd->data.setadapterparms.hdr.command_code = command;
2567         cmd->data.setadapterparms.hdr.used_total = 1;
2568         cmd->data.setadapterparms.hdr.seq_no = 1;
2569
2570         return iob;
2571 }
2572 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2573
2574 int qeth_query_setadapterparms(struct qeth_card *card)
2575 {
2576         int rc;
2577         struct qeth_cmd_buffer *iob;
2578
2579         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2580         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2581                                    sizeof(struct qeth_ipacmd_setadpparms));
2582         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2583         return rc;
2584 }
2585 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2586
2587 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2588                 unsigned int qdio_error, const char *dbftext)
2589 {
2590         if (qdio_error) {
2591                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2592                 QETH_DBF_TEXT(QERR, 2, dbftext);
2593                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2594                                buf->element[15].flags & 0xff);
2595                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2596                                buf->element[14].flags & 0xff);
2597                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2598                 if ((buf->element[15].flags & 0xff) == 0x12) {
2599                         card->stats.rx_dropped++;
2600                         return 0;
2601                 } else
2602                         return 1;
2603         }
2604         return 0;
2605 }
2606 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2607
2608 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2609 {
2610         struct qeth_qdio_q *queue = card->qdio.in_q;
2611         int count;
2612         int i;
2613         int rc;
2614         int newcount = 0;
2615
2616         count = (index < queue->next_buf_to_init)?
2617                 card->qdio.in_buf_pool.buf_count -
2618                 (queue->next_buf_to_init - index) :
2619                 card->qdio.in_buf_pool.buf_count -
2620                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2621         /* only requeue at a certain threshold to avoid SIGAs */
2622         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2623                 for (i = queue->next_buf_to_init;
2624                      i < queue->next_buf_to_init + count; ++i) {
2625                         if (qeth_init_input_buffer(card,
2626                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2627                                 break;
2628                         } else {
2629                                 newcount++;
2630                         }
2631                 }
2632
2633                 if (newcount < count) {
2634                         /* we are in memory shortage so we switch back to
2635                            traditional skb allocation and drop packages */
2636                         atomic_set(&card->force_alloc_skb, 3);
2637                         count = newcount;
2638                 } else {
2639                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2640                 }
2641
2642                 /*
2643                  * according to old code it should be avoided to requeue all
2644                  * 128 buffers in order to benefit from PCI avoidance.
2645                  * this function keeps at least one buffer (the buffer at
2646                  * 'index') un-requeued -> this buffer is the first buffer that
2647                  * will be requeued the next time
2648                  */
2649                 if (card->options.performance_stats) {
2650                         card->perf_stats.inbound_do_qdio_cnt++;
2651                         card->perf_stats.inbound_do_qdio_start_time =
2652                                 qeth_get_micros();
2653                 }
2654                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2655                              queue->next_buf_to_init, count);
2656                 if (card->options.performance_stats)
2657                         card->perf_stats.inbound_do_qdio_time +=
2658                                 qeth_get_micros() -
2659                                 card->perf_stats.inbound_do_qdio_start_time;
2660                 if (rc) {
2661                         dev_warn(&card->gdev->dev,
2662                                 "QDIO reported an error, rc=%i\n", rc);
2663                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2664                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2665                 }
2666                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2667                                           QDIO_MAX_BUFFERS_PER_Q;
2668         }
2669 }
2670 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2671
2672 static int qeth_handle_send_error(struct qeth_card *card,
2673                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2674 {
2675         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2676
2677         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2678         if (card->info.type == QETH_CARD_TYPE_IQD) {
2679                 if (sbalf15 == 0) {
2680                         qdio_err = 0;
2681                 } else {
2682                         qdio_err = 1;
2683                 }
2684         }
2685         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2686
2687         if (!qdio_err)
2688                 return QETH_SEND_ERROR_NONE;
2689
2690         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2691                 return QETH_SEND_ERROR_RETRY;
2692
2693         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2694         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2695         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2696                        (u16)qdio_err, (u8)sbalf15);
2697         return QETH_SEND_ERROR_LINK_FAILURE;
2698 }
2699
2700 /*
2701  * Switched to packing state if the number of used buffers on a queue
2702  * reaches a certain limit.
2703  */
2704 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2705 {
2706         if (!queue->do_pack) {
2707                 if (atomic_read(&queue->used_buffers)
2708                     >= QETH_HIGH_WATERMARK_PACK){
2709                         /* switch non-PACKING -> PACKING */
2710                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2711                         if (queue->card->options.performance_stats)
2712                                 queue->card->perf_stats.sc_dp_p++;
2713                         queue->do_pack = 1;
2714                 }
2715         }
2716 }
2717
2718 /*
2719  * Switches from packing to non-packing mode. If there is a packing
2720  * buffer on the queue this buffer will be prepared to be flushed.
2721  * In that case 1 is returned to inform the caller. If no buffer
2722  * has to be flushed, zero is returned.
2723  */
2724 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2725 {
2726         struct qeth_qdio_out_buffer *buffer;
2727         int flush_count = 0;
2728
2729         if (queue->do_pack) {
2730                 if (atomic_read(&queue->used_buffers)
2731                     <= QETH_LOW_WATERMARK_PACK) {
2732                         /* switch PACKING -> non-PACKING */
2733                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2734                         if (queue->card->options.performance_stats)
2735                                 queue->card->perf_stats.sc_p_dp++;
2736                         queue->do_pack = 0;
2737                         /* flush packing buffers */
2738                         buffer = &queue->bufs[queue->next_buf_to_fill];
2739                         if ((atomic_read(&buffer->state) ==
2740                                                 QETH_QDIO_BUF_EMPTY) &&
2741                             (buffer->next_element_to_fill > 0)) {
2742                                 atomic_set(&buffer->state,
2743                                                 QETH_QDIO_BUF_PRIMED);
2744                                 flush_count++;
2745                                 queue->next_buf_to_fill =
2746                                         (queue->next_buf_to_fill + 1) %
2747                                         QDIO_MAX_BUFFERS_PER_Q;
2748                         }
2749                 }
2750         }
2751         return flush_count;
2752 }
2753
2754 /*
2755  * Called to flush a packing buffer if no more pci flags are on the queue.
2756  * Checks if there is a packing buffer and prepares it to be flushed.
2757  * In that case returns 1, otherwise zero.
2758  */
2759 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2760 {
2761         struct qeth_qdio_out_buffer *buffer;
2762
2763         buffer = &queue->bufs[queue->next_buf_to_fill];
2764         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2765            (buffer->next_element_to_fill > 0)) {
2766                 /* it's a packing buffer */
2767                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2768                 queue->next_buf_to_fill =
2769                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2770                 return 1;
2771         }
2772         return 0;
2773 }
2774
2775 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2776                                int count)
2777 {
2778         struct qeth_qdio_out_buffer *buf;
2779         int rc;
2780         int i;
2781         unsigned int qdio_flags;
2782
2783         for (i = index; i < index + count; ++i) {
2784                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2785                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2786                                 SBAL_FLAGS_LAST_ENTRY;
2787
2788                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2789                         continue;
2790
2791                 if (!queue->do_pack) {
2792                         if ((atomic_read(&queue->used_buffers) >=
2793                                 (QETH_HIGH_WATERMARK_PACK -
2794                                  QETH_WATERMARK_PACK_FUZZ)) &&
2795                             !atomic_read(&queue->set_pci_flags_count)) {
2796                                 /* it's likely that we'll go to packing
2797                                  * mode soon */
2798                                 atomic_inc(&queue->set_pci_flags_count);
2799                                 buf->buffer->element[0].flags |= 0x40;
2800                         }
2801                 } else {
2802                         if (!atomic_read(&queue->set_pci_flags_count)) {
2803                                 /*
2804                                  * there's no outstanding PCI any more, so we
2805                                  * have to request a PCI to be sure the the PCI
2806                                  * will wake at some time in the future then we
2807                                  * can flush packed buffers that might still be
2808                                  * hanging around, which can happen if no
2809                                  * further send was requested by the stack
2810                                  */
2811                                 atomic_inc(&queue->set_pci_flags_count);
2812                                 buf->buffer->element[0].flags |= 0x40;
2813                         }
2814                 }
2815         }
2816
2817         queue->sync_iqdio_error = 0;
2818         queue->card->dev->trans_start = jiffies;
2819         if (queue->card->options.performance_stats) {
2820                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2821                 queue->card->perf_stats.outbound_do_qdio_start_time =
2822                         qeth_get_micros();
2823         }
2824         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2825         if (atomic_read(&queue->set_pci_flags_count))
2826                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2827         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2828                      queue->queue_no, index, count);
2829         if (queue->card->options.performance_stats)
2830                 queue->card->perf_stats.outbound_do_qdio_time +=
2831                         qeth_get_micros() -
2832                         queue->card->perf_stats.outbound_do_qdio_start_time;
2833         if (rc > 0) {
2834                 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2835                         queue->sync_iqdio_error = rc & 3;
2836         }
2837         if (rc) {
2838                 queue->card->stats.tx_errors += count;
2839                 /* ignore temporary SIGA errors without busy condition */
2840                 if (rc == QDIO_ERROR_SIGA_TARGET)
2841                         return;
2842                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2843                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2844                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2845
2846                 /* this must not happen under normal circumstances. if it
2847                  * happens something is really wrong -> recover */
2848                 qeth_schedule_recovery(queue->card);
2849                 return;
2850         }
2851         atomic_add(count, &queue->used_buffers);
2852         if (queue->card->options.performance_stats)
2853                 queue->card->perf_stats.bufs_sent += count;
2854 }
2855
2856 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2857 {
2858         int index;
2859         int flush_cnt = 0;
2860         int q_was_packing = 0;
2861
2862         /*
2863          * check if weed have to switch to non-packing mode or if
2864          * we have to get a pci flag out on the queue
2865          */
2866         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2867             !atomic_read(&queue->set_pci_flags_count)) {
2868                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2869                                 QETH_OUT_Q_UNLOCKED) {
2870                         /*
2871                          * If we get in here, there was no action in
2872                          * do_send_packet. So, we check if there is a
2873                          * packing buffer to be flushed here.
2874                          */
2875                         netif_stop_queue(queue->card->dev);
2876                         index = queue->next_buf_to_fill;
2877                         q_was_packing = queue->do_pack;
2878                         /* queue->do_pack may change */
2879                         barrier();
2880                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2881                         if (!flush_cnt &&
2882                             !atomic_read(&queue->set_pci_flags_count))
2883                                 flush_cnt +=
2884                                         qeth_flush_buffers_on_no_pci(queue);
2885                         if (queue->card->options.performance_stats &&
2886                             q_was_packing)
2887                                 queue->card->perf_stats.bufs_sent_pack +=
2888                                         flush_cnt;
2889                         if (flush_cnt)
2890                                 qeth_flush_buffers(queue, index, flush_cnt);
2891                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2892                 }
2893         }
2894 }
2895
2896 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2897                 unsigned int qdio_error, int __queue, int first_element,
2898                 int count, unsigned long card_ptr)
2899 {
2900         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2901         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2902         struct qeth_qdio_out_buffer *buffer;
2903         int i;
2904         unsigned qeth_send_err;
2905
2906         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2907         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2908                 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2909                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2910                 netif_stop_queue(card->dev);
2911                 qeth_schedule_recovery(card);
2912                 return;
2913         }
2914         if (card->options.performance_stats) {
2915                 card->perf_stats.outbound_handler_cnt++;
2916                 card->perf_stats.outbound_handler_start_time =
2917                         qeth_get_micros();
2918         }
2919         for (i = first_element; i < (first_element + count); ++i) {
2920                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2921                 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
2922                 __qeth_clear_output_buffer(queue, buffer,
2923                         (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2924         }
2925         atomic_sub(count, &queue->used_buffers);
2926         /* check if we need to do something on this outbound queue */
2927         if (card->info.type != QETH_CARD_TYPE_IQD)
2928                 qeth_check_outbound_queue(queue);
2929
2930         netif_wake_queue(queue->card->dev);
2931         if (card->options.performance_stats)
2932                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2933                         card->perf_stats.outbound_handler_start_time;
2934 }
2935 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2936
2937 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2938                         int ipv, int cast_type)
2939 {
2940         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
2941                 return card->qdio.default_out_queue;
2942         switch (card->qdio.no_out_queues) {
2943         case 4:
2944                 if (cast_type && card->info.is_multicast_different)
2945                         return card->info.is_multicast_different &
2946                                 (card->qdio.no_out_queues - 1);
2947                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2948                         const u8 tos = ip_hdr(skb)->tos;
2949
2950                         if (card->qdio.do_prio_queueing ==
2951                                 QETH_PRIO_Q_ING_TOS) {
2952                                 if (tos & IP_TOS_NOTIMPORTANT)
2953                                         return 3;
2954                                 if (tos & IP_TOS_HIGHRELIABILITY)
2955                                         return 2;
2956                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
2957                                         return 1;
2958                                 if (tos & IP_TOS_LOWDELAY)
2959                                         return 0;
2960                         }
2961                         if (card->qdio.do_prio_queueing ==
2962                                 QETH_PRIO_Q_ING_PREC)
2963                                 return 3 - (tos >> 6);
2964                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
2965                         /* TODO: IPv6!!! */
2966                 }
2967                 return card->qdio.default_out_queue;
2968         case 1: /* fallthrough for single-out-queue 1920-device */
2969         default:
2970                 return card->qdio.default_out_queue;
2971         }
2972 }
2973 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
2974
2975 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
2976                      struct sk_buff *skb, int elems)
2977 {
2978         int elements_needed = 0;
2979
2980         if (skb_shinfo(skb)->nr_frags > 0)
2981                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
2982         if (elements_needed == 0)
2983                 elements_needed = 1 + (((((unsigned long) skb->data) %
2984                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
2985         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2986                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
2987                         "(Number=%d / Length=%d). Discarded.\n",
2988                         (elements_needed+elems), skb->len);
2989                 return 0;
2990         }
2991         return elements_needed;
2992 }
2993 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
2994
2995 static inline void __qeth_fill_buffer(struct sk_buff *skb,
2996         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
2997         int offset)
2998 {
2999         int length = skb->len;
3000         int length_here;
3001         int element;
3002         char *data;
3003         int first_lap ;
3004
3005         element = *next_element_to_fill;
3006         data = skb->data;
3007         first_lap = (is_tso == 0 ? 1 : 0);
3008
3009         if (offset >= 0) {
3010                 data = skb->data + offset;
3011                 length -= offset;
3012                 first_lap = 0;
3013         }
3014
3015         while (length > 0) {
3016                 /* length_here is the remaining amount of data in this page */
3017                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3018                 if (length < length_here)
3019                         length_here = length;
3020
3021                 buffer->element[element].addr = data;
3022                 buffer->element[element].length = length_here;
3023                 length -= length_here;
3024                 if (!length) {
3025                         if (first_lap)
3026                                 buffer->element[element].flags = 0;
3027                         else
3028                                 buffer->element[element].flags =
3029                                     SBAL_FLAGS_LAST_FRAG;
3030                 } else {
3031                         if (first_lap)
3032                                 buffer->element[element].flags =
3033                                     SBAL_FLAGS_FIRST_FRAG;
3034                         else
3035                                 buffer->element[element].flags =
3036                                     SBAL_FLAGS_MIDDLE_FRAG;
3037                 }
3038                 data += length_here;
3039                 element++;
3040                 first_lap = 0;
3041         }
3042         *next_element_to_fill = element;
3043 }
3044
3045 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3046                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3047                 struct qeth_hdr *hdr, int offset, int hd_len)
3048 {
3049         struct qdio_buffer *buffer;
3050         int flush_cnt = 0, hdr_len, large_send = 0;
3051
3052         buffer = buf->buffer;
3053         atomic_inc(&skb->users);
3054         skb_queue_tail(&buf->skb_list, skb);
3055
3056         /*check first on TSO ....*/
3057         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3058                 int element = buf->next_element_to_fill;
3059
3060                 hdr_len = sizeof(struct qeth_hdr_tso) +
3061                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3062                 /*fill first buffer entry only with header information */
3063                 buffer->element[element].addr = skb->data;
3064                 buffer->element[element].length = hdr_len;
3065                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3066                 buf->next_element_to_fill++;
3067                 skb->data += hdr_len;
3068                 skb->len  -= hdr_len;
3069                 large_send = 1;
3070         }
3071
3072         if (offset >= 0) {
3073                 int element = buf->next_element_to_fill;
3074                 buffer->element[element].addr = hdr;
3075                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3076                                                         hd_len;
3077                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3078                 buf->is_header[element] = 1;
3079                 buf->next_element_to_fill++;
3080         }
3081
3082         if (skb_shinfo(skb)->nr_frags == 0)
3083                 __qeth_fill_buffer(skb, buffer, large_send,
3084                                 (int *)&buf->next_element_to_fill, offset);
3085         else
3086                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3087                                         (int *)&buf->next_element_to_fill);
3088
3089         if (!queue->do_pack) {
3090                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3091                 /* set state to PRIMED -> will be flushed */
3092                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3093                 flush_cnt = 1;
3094         } else {
3095                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3096                 if (queue->card->options.performance_stats)
3097                         queue->card->perf_stats.skbs_sent_pack++;
3098                 if (buf->next_element_to_fill >=
3099                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3100                         /*
3101                          * packed buffer if full -> set state PRIMED
3102                          * -> will be flushed
3103                          */
3104                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3105                         flush_cnt = 1;
3106                 }
3107         }
3108         return flush_cnt;
3109 }
3110
3111 int qeth_do_send_packet_fast(struct qeth_card *card,
3112                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3113                 struct qeth_hdr *hdr, int elements_needed,
3114                 int offset, int hd_len)
3115 {
3116         struct qeth_qdio_out_buffer *buffer;
3117         struct sk_buff *skb1;
3118         struct qeth_skb_data *retry_ctrl;
3119         int index;
3120         int rc;
3121
3122         /* spin until we get the queue ... */
3123         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3124                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3125         /* ... now we've got the queue */
3126         index = queue->next_buf_to_fill;
3127         buffer = &queue->bufs[queue->next_buf_to_fill];
3128         /*
3129          * check if buffer is empty to make sure that we do not 'overtake'
3130          * ourselves and try to fill a buffer that is already primed
3131          */
3132         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3133                 goto out;
3134         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3135                                           QDIO_MAX_BUFFERS_PER_Q;
3136         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3137         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3138         qeth_flush_buffers(queue, index, 1);
3139         if (queue->sync_iqdio_error == 2) {
3140                 skb1 = skb_dequeue(&buffer->skb_list);
3141                 while (skb1) {
3142                         atomic_dec(&skb1->users);
3143                         skb1 = skb_dequeue(&buffer->skb_list);
3144                 }
3145                 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3146                 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3147                         retry_ctrl->magic = QETH_SKB_MAGIC;
3148                         retry_ctrl->count = 0;
3149                 }
3150                 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3151                         retry_ctrl->count++;
3152                         rc = dev_queue_xmit(skb);
3153                 } else {
3154                         dev_kfree_skb_any(skb);
3155                         QETH_DBF_TEXT(QERR, 2, "qrdrop");
3156                 }
3157         }
3158         return 0;
3159 out:
3160         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3161         return -EBUSY;
3162 }
3163 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3164
3165 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3166                 struct sk_buff *skb, struct qeth_hdr *hdr,
3167                 int elements_needed)
3168 {
3169         struct qeth_qdio_out_buffer *buffer;
3170         int start_index;
3171         int flush_count = 0;
3172         int do_pack = 0;
3173         int tmp;
3174         int rc = 0;
3175
3176         /* spin until we get the queue ... */
3177         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3178                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3179         start_index = queue->next_buf_to_fill;
3180         buffer = &queue->bufs[queue->next_buf_to_fill];
3181         /*
3182          * check if buffer is empty to make sure that we do not 'overtake'
3183          * ourselves and try to fill a buffer that is already primed
3184          */
3185         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3186                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3187                 return -EBUSY;
3188         }
3189         /* check if we need to switch packing state of this queue */
3190         qeth_switch_to_packing_if_needed(queue);
3191         if (queue->do_pack) {
3192                 do_pack = 1;
3193                 /* does packet fit in current buffer? */
3194                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3195                     buffer->next_element_to_fill) < elements_needed) {
3196                         /* ... no -> set state PRIMED */
3197                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3198                         flush_count++;
3199                         queue->next_buf_to_fill =
3200                                 (queue->next_buf_to_fill + 1) %
3201                                 QDIO_MAX_BUFFERS_PER_Q;
3202                         buffer = &queue->bufs[queue->next_buf_to_fill];
3203                         /* we did a step forward, so check buffer state
3204                          * again */
3205                         if (atomic_read(&buffer->state) !=
3206                             QETH_QDIO_BUF_EMPTY) {
3207                                 qeth_flush_buffers(queue, start_index,
3208                                                            flush_count);
3209                                 atomic_set(&queue->state,
3210                                                 QETH_OUT_Q_UNLOCKED);
3211                                 return -EBUSY;
3212                         }
3213                 }
3214         }
3215         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3216         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3217                                   QDIO_MAX_BUFFERS_PER_Q;
3218         flush_count += tmp;
3219         if (flush_count)
3220                 qeth_flush_buffers(queue, start_index, flush_count);
3221         else if (!atomic_read(&queue->set_pci_flags_count))
3222                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3223         /*
3224          * queue->state will go from LOCKED -> UNLOCKED or from
3225          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3226          * (switch packing state or flush buffer to get another pci flag out).
3227          * In that case we will enter this loop
3228          */
3229         while (atomic_dec_return(&queue->state)) {
3230                 flush_count = 0;
3231                 start_index = queue->next_buf_to_fill;
3232                 /* check if we can go back to non-packing state */
3233                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3234                 /*
3235                  * check if we need to flush a packing buffer to get a pci
3236                  * flag out on the queue
3237                  */
3238                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3239                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3240                 if (flush_count)
3241                         qeth_flush_buffers(queue, start_index, flush_count);
3242         }
3243         /* at this point the queue is UNLOCKED again */
3244         if (queue->card->options.performance_stats && do_pack)
3245                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3246
3247         return rc;
3248 }
3249 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3250
3251 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3252                 struct qeth_reply *reply, unsigned long data)
3253 {
3254         struct qeth_ipa_cmd *cmd;
3255         struct qeth_ipacmd_setadpparms *setparms;
3256
3257         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3258
3259         cmd = (struct qeth_ipa_cmd *) data;
3260         setparms = &(cmd->data.setadapterparms);
3261
3262         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3263         if (cmd->hdr.return_code) {
3264                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3265                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3266         }
3267         card->info.promisc_mode = setparms->data.mode;
3268         return 0;
3269 }
3270
3271 void qeth_setadp_promisc_mode(struct qeth_card *card)
3272 {
3273         enum qeth_ipa_promisc_modes mode;
3274         struct net_device *dev = card->dev;
3275         struct qeth_cmd_buffer *iob;
3276         struct qeth_ipa_cmd *cmd;
3277
3278         QETH_DBF_TEXT(TRACE, 4, "setprom");
3279
3280         if (((dev->flags & IFF_PROMISC) &&
3281              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3282             (!(dev->flags & IFF_PROMISC) &&
3283              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3284                 return;
3285         mode = SET_PROMISC_MODE_OFF;
3286         if (dev->flags & IFF_PROMISC)
3287                 mode = SET_PROMISC_MODE_ON;
3288         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3289
3290         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3291                         sizeof(struct qeth_ipacmd_setadpparms));
3292         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3293         cmd->data.setadapterparms.data.mode = mode;
3294         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3295 }
3296 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3297
3298 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3299 {
3300         struct qeth_card *card;
3301         char dbf_text[15];
3302
3303         card = dev->ml_priv;
3304
3305         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3306         sprintf(dbf_text, "%8x", new_mtu);
3307         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3308
3309         if (new_mtu < 64)
3310                 return -EINVAL;
3311         if (new_mtu > 65535)
3312                 return -EINVAL;
3313         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3314             (!qeth_mtu_is_valid(card, new_mtu)))
3315                 return -EINVAL;
3316         dev->mtu = new_mtu;
3317         return 0;
3318 }
3319 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3320
3321 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3322 {
3323         struct qeth_card *card;
3324
3325         card = dev->ml_priv;
3326
3327         QETH_DBF_TEXT(TRACE, 5, "getstat");
3328
3329         return &card->stats;
3330 }
3331 EXPORT_SYMBOL_GPL(qeth_get_stats);
3332
3333 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3334                 struct qeth_reply *reply, unsigned long data)
3335 {
3336         struct qeth_ipa_cmd *cmd;
3337
3338         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3339
3340         cmd = (struct qeth_ipa_cmd *) data;
3341         if (!card->options.layer2 ||
3342             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3343                 memcpy(card->dev->dev_addr,
3344                        &cmd->data.setadapterparms.data.change_addr.addr,
3345                        OSA_ADDR_LEN);
3346                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3347         }
3348         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3349         return 0;
3350 }
3351
3352 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3353 {
3354         int rc;
3355         struct qeth_cmd_buffer *iob;
3356         struct qeth_ipa_cmd *cmd;
3357
3358         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3359
3360         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3361                                    sizeof(struct qeth_ipacmd_setadpparms));
3362         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3363         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3364         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3365         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3366                card->dev->dev_addr, OSA_ADDR_LEN);
3367         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3368                                NULL);
3369         return rc;
3370 }
3371 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3372
3373 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3374                 struct qeth_reply *reply, unsigned long data)
3375 {
3376         struct qeth_ipa_cmd *cmd;
3377         struct qeth_set_access_ctrl *access_ctrl_req;
3378         int rc;
3379
3380         QETH_DBF_TEXT(TRACE, 4, "setaccb");
3381
3382         cmd = (struct qeth_ipa_cmd *) data;
3383         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3384         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3385         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3386         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3387                 cmd->data.setadapterparms.hdr.return_code);
3388         switch (cmd->data.setadapterparms.hdr.return_code) {
3389         case SET_ACCESS_CTRL_RC_SUCCESS:
3390         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3391         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3392         {
3393                 card->options.isolation = access_ctrl_req->subcmd_code;
3394                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3395                         dev_info(&card->gdev->dev,
3396                             "QDIO data connection isolation is deactivated\n");
3397                 } else {
3398                         dev_info(&card->gdev->dev,
3399                             "QDIO data connection isolation is activated\n");
3400                 }
3401                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3402                         card->gdev->dev.kobj.name,
3403                         access_ctrl_req->subcmd_code,
3404                         cmd->data.setadapterparms.hdr.return_code);
3405                 rc = 0;
3406                 break;
3407         }
3408         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3409         {
3410                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3411                         card->gdev->dev.kobj.name,
3412                         access_ctrl_req->subcmd_code,
3413                         cmd->data.setadapterparms.hdr.return_code);
3414                 dev_err(&card->gdev->dev, "Adapter does not "
3415                         "support QDIO data connection isolation\n");
3416
3417                 /* ensure isolation mode is "none" */
3418                 card->options.isolation = ISOLATION_MODE_NONE;
3419                 rc = -EOPNOTSUPP;
3420                 break;
3421         }
3422         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3423         {
3424                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3425                         card->gdev->dev.kobj.name,
3426                         access_ctrl_req->subcmd_code,
3427                         cmd->data.setadapterparms.hdr.return_code);
3428                 dev_err(&card->gdev->dev,
3429                         "Adapter is dedicated. "
3430                         "QDIO data connection isolation not supported\n");
3431
3432                 /* ensure isolation mode is "none" */
3433                 card->options.isolation = ISOLATION_MODE_NONE;
3434                 rc = -EOPNOTSUPP;
3435                 break;
3436         }
3437         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3438         {
3439                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3440                         card->gdev->dev.kobj.name,
3441                         access_ctrl_req->subcmd_code,
3442                         cmd->data.setadapterparms.hdr.return_code);
3443                 dev_err(&card->gdev->dev,
3444                         "TSO does not permit QDIO data connection isolation\n");
3445
3446                 /* ensure isolation mode is "none" */
3447                 card->options.isolation = ISOLATION_MODE_NONE;
3448                 rc = -EPERM;
3449                 break;
3450         }
3451         default:
3452         {
3453                 /* this should never happen */
3454                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3455                         "==UNKNOWN\n",
3456                         card->gdev->dev.kobj.name,
3457                         access_ctrl_req->subcmd_code,
3458                         cmd->data.setadapterparms.hdr.return_code);
3459
3460                 /* ensure isolation mode is "none" */
3461                 card->options.isolation = ISOLATION_MODE_NONE;
3462                 rc = 0;
3463                 break;
3464         }
3465         }
3466         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3467         return rc;
3468 }
3469
3470 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3471                 enum qeth_ipa_isolation_modes isolation)
3472 {
3473         int rc;
3474         struct qeth_cmd_buffer *iob;
3475         struct qeth_ipa_cmd *cmd;
3476         struct qeth_set_access_ctrl *access_ctrl_req;
3477
3478         QETH_DBF_TEXT(TRACE, 4, "setacctl");
3479
3480         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3481         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3482
3483         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3484                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3485                                    sizeof(struct qeth_set_access_ctrl));
3486         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3487         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3488         access_ctrl_req->subcmd_code = isolation;
3489
3490         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3491                                NULL);
3492         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3493         return rc;
3494 }
3495
3496 int qeth_set_access_ctrl_online(struct qeth_card *card)
3497 {
3498         int rc = 0;
3499
3500         QETH_DBF_TEXT(TRACE, 4, "setactlo");
3501
3502         if (card->info.type == QETH_CARD_TYPE_OSAE &&
3503             qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3504                 rc = qeth_setadpparms_set_access_ctrl(card,
3505                         card->options.isolation);
3506                 if (rc) {
3507                         QETH_DBF_MESSAGE(3,
3508                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed",
3509                                 card->gdev->dev.kobj.name,
3510                                 rc);
3511                 }
3512         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3513                 card->options.isolation = ISOLATION_MODE_NONE;
3514
3515                 dev_err(&card->gdev->dev, "Adapter does not "
3516                         "support QDIO data connection isolation\n");
3517                 rc = -EOPNOTSUPP;
3518         }
3519         return rc;
3520 }
3521 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3522
3523 void qeth_tx_timeout(struct net_device *dev)
3524 {
3525         struct qeth_card *card;
3526
3527         QETH_DBF_TEXT(TRACE, 4, "txtimeo");
3528         card = dev->ml_priv;
3529         card->stats.tx_errors++;
3530         qeth_schedule_recovery(card);
3531 }
3532 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3533
3534 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3535 {
3536         struct qeth_card *card = dev->ml_priv;
3537         int rc = 0;
3538
3539         switch (regnum) {
3540         case MII_BMCR: /* Basic mode control register */
3541                 rc = BMCR_FULLDPLX;
3542                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3543                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3544                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3545                         rc |= BMCR_SPEED100;
3546                 break;
3547         case MII_BMSR: /* Basic mode status register */
3548                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3549                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3550                      BMSR_100BASE4;
3551                 break;
3552         case MII_PHYSID1: /* PHYS ID 1 */
3553                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3554                      dev->dev_addr[2];
3555                 rc = (rc >> 5) & 0xFFFF;
3556                 break;
3557         case MII_PHYSID2: /* PHYS ID 2 */
3558                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3559                 break;
3560         case MII_ADVERTISE: /* Advertisement control reg */
3561                 rc = ADVERTISE_ALL;
3562                 break;
3563         case MII_LPA: /* Link partner ability reg */
3564                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3565                      LPA_100BASE4 | LPA_LPACK;
3566                 break;
3567         case MII_EXPANSION: /* Expansion register */
3568                 break;
3569         case MII_DCOUNTER: /* disconnect counter */
3570                 break;
3571         case MII_FCSCOUNTER: /* false carrier counter */
3572                 break;
3573         case MII_NWAYTEST: /* N-way auto-neg test register */
3574                 break;
3575         case MII_RERRCOUNTER: /* rx error counter */
3576                 rc = card->stats.rx_errors;
3577                 break;
3578         case MII_SREVISION: /* silicon revision */
3579                 break;
3580         case MII_RESV1: /* reserved 1 */
3581                 break;
3582         case MII_LBRERROR: /* loopback, rx, bypass error */
3583                 break;
3584         case MII_PHYADDR: /* physical address */
3585                 break;
3586         case MII_RESV2: /* reserved 2 */
3587                 break;
3588         case MII_TPISTATUS: /* TPI status for 10mbps */
3589                 break;
3590         case MII_NCONFIG: /* network interface config */
3591                 break;
3592         default:
3593                 break;
3594         }
3595         return rc;
3596 }
3597 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3598
3599 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3600                 struct qeth_cmd_buffer *iob, int len,
3601                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3602                         unsigned long),
3603                 void *reply_param)
3604 {
3605         u16 s1, s2;
3606
3607         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3608
3609         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3610         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3611                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3612         /* adjust PDU length fields in IPA_PDU_HEADER */
3613         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3614         s2 = (u32) len;
3615         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3616         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3617         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3618         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3619         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3620                                       reply_cb, reply_param);
3621 }
3622
3623 static int qeth_snmp_command_cb(struct qeth_card *card,
3624                 struct qeth_reply *reply, unsigned long sdata)
3625 {
3626         struct qeth_ipa_cmd *cmd;
3627         struct qeth_arp_query_info *qinfo;
3628         struct qeth_snmp_cmd *snmp;
3629         unsigned char *data;
3630         __u16 data_len;
3631
3632         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3633
3634         cmd = (struct qeth_ipa_cmd *) sdata;
3635         data = (unsigned char *)((char *)cmd - reply->offset);
3636         qinfo = (struct qeth_arp_query_info *) reply->param;
3637         snmp = &cmd->data.setadapterparms.data.snmp;
3638
3639         if (cmd->hdr.return_code) {
3640                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3641                 return 0;
3642         }
3643         if (cmd->data.setadapterparms.hdr.return_code) {
3644                 cmd->hdr.return_code =
3645                         cmd->data.setadapterparms.hdr.return_code;
3646                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3647                 return 0;
3648         }
3649         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3650         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3651                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3652         else
3653                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3654
3655         /* check if there is enough room in userspace */
3656         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3657                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3658                 cmd->hdr.return_code = -ENOMEM;
3659                 return 0;
3660         }
3661         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3662                        cmd->data.setadapterparms.hdr.used_total);
3663         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3664                 cmd->data.setadapterparms.hdr.seq_no);
3665         /*copy entries to user buffer*/
3666         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3667                 memcpy(qinfo->udata + qinfo->udata_offset,
3668                        (char *)snmp,
3669                        data_len + offsetof(struct qeth_snmp_cmd, data));
3670                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3671         } else {
3672                 memcpy(qinfo->udata + qinfo->udata_offset,
3673                        (char *)&snmp->request, data_len);
3674         }
3675         qinfo->udata_offset += data_len;
3676         /* check if all replies received ... */
3677                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3678                                cmd->data.setadapterparms.hdr.used_total);
3679                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3680                                cmd->data.setadapterparms.hdr.seq_no);
3681         if (cmd->data.setadapterparms.hdr.seq_no <
3682             cmd->data.setadapterparms.hdr.used_total)
3683                 return 1;
3684         return 0;
3685 }
3686
3687 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3688 {
3689         struct qeth_cmd_buffer *iob;
3690         struct qeth_ipa_cmd *cmd;
3691         struct qeth_snmp_ureq *ureq;
3692         int req_len;
3693         struct qeth_arp_query_info qinfo = {0, };
3694         int rc = 0;
3695
3696         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3697
3698         if (card->info.guestlan)
3699                 return -EOPNOTSUPP;
3700
3701         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3702             (!card->options.layer2)) {
3703                 return -EOPNOTSUPP;
3704         }
3705         /* skip 4 bytes (data_len struct member) to get req_len */
3706         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3707                 return -EFAULT;
3708         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3709         if (!ureq) {
3710                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3711                 return -ENOMEM;
3712         }
3713         if (copy_from_user(ureq, udata,
3714                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3715                 kfree(ureq);
3716                 return -EFAULT;
3717         }
3718         qinfo.udata_len = ureq->hdr.data_len;
3719         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3720         if (!qinfo.udata) {
3721                 kfree(ureq);
3722                 return -ENOMEM;
3723         }
3724         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3725
3726         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3727                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3728         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3729         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3730         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3731                                     qeth_snmp_command_cb, (void *)&qinfo);
3732         if (rc)
3733                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3734                            QETH_CARD_IFNAME(card), rc);
3735         else {
3736                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3737                         rc = -EFAULT;
3738         }
3739
3740         kfree(ureq);
3741         kfree(qinfo.udata);
3742         return rc;
3743 }
3744 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3745
3746 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3747 {
3748         switch (card->info.type) {
3749         case QETH_CARD_TYPE_IQD:
3750                 return 2;
3751         default:
3752                 return 0;
3753         }
3754 }
3755
3756 static int qeth_qdio_establish(struct qeth_card *card)
3757 {
3758         struct qdio_initialize init_data;
3759         char *qib_param_field;
3760         struct qdio_buffer **in_sbal_ptrs;
3761         struct qdio_buffer **out_sbal_ptrs;
3762         int i, j, k;
3763         int rc = 0;
3764
3765         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3766
3767         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3768                               GFP_KERNEL);
3769         if (!qib_param_field)
3770                 return -ENOMEM;
3771
3772         qeth_create_qib_param_field(card, qib_param_field);
3773         qeth_create_qib_param_field_blkt(card, qib_param_field);
3774
3775         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3776                                GFP_KERNEL);
3777         if (!in_sbal_ptrs) {
3778                 kfree(qib_param_field);
3779                 return -ENOMEM;
3780         }
3781         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3782                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3783                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3784
3785         out_sbal_ptrs =
3786                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3787                         sizeof(void *), GFP_KERNEL);
3788         if (!out_sbal_ptrs) {
3789                 kfree(in_sbal_ptrs);
3790                 kfree(qib_param_field);
3791                 return -ENOMEM;
3792         }
3793         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3794                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3795                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3796                                 card->qdio.out_qs[i]->bufs[j].buffer);
3797                 }
3798
3799         memset(&init_data, 0, sizeof(struct qdio_initialize));
3800         init_data.cdev                   = CARD_DDEV(card);
3801         init_data.q_format               = qeth_get_qdio_q_format(card);
3802         init_data.qib_param_field_format = 0;
3803         init_data.qib_param_field        = qib_param_field;
3804         init_data.no_input_qs            = 1;
3805         init_data.no_output_qs           = card->qdio.no_out_queues;
3806         init_data.input_handler          = card->discipline.input_handler;
3807         init_data.output_handler         = card->discipline.output_handler;
3808         init_data.int_parm               = (unsigned long) card;
3809         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3810         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3811
3812         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3813                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3814                 rc = qdio_allocate(&init_data);
3815                 if (rc) {
3816                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3817                         goto out;
3818                 }
3819                 rc = qdio_establish(&init_data);
3820                 if (rc) {
3821                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3822                         qdio_free(CARD_DDEV(card));
3823                 }
3824         }
3825 out:
3826         kfree(out_sbal_ptrs);
3827         kfree(in_sbal_ptrs);
3828         kfree(qib_param_field);
3829         return rc;
3830 }
3831
3832 static void qeth_core_free_card(struct qeth_card *card)
3833 {
3834
3835         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3836         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3837         qeth_clean_channel(&card->read);
3838         qeth_clean_channel(&card->write);
3839         if (card->dev)
3840                 free_netdev(card->dev);
3841         kfree(card->ip_tbd_list);
3842         qeth_free_qdio_buffers(card);
3843         unregister_service_level(&card->qeth_service_level);
3844         kfree(card);
3845 }
3846
3847 static struct ccw_device_id qeth_ids[] = {
3848         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3849         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3850         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3851         {},
3852 };
3853 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3854
3855 static struct ccw_driver qeth_ccw_driver = {
3856         .name = "qeth",
3857         .ids = qeth_ids,
3858         .probe = ccwgroup_probe_ccwdev,
3859         .remove = ccwgroup_remove_ccwdev,
3860 };
3861
3862 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3863                                 unsigned long driver_id)
3864 {
3865         return ccwgroup_create_from_string(root_dev, driver_id,
3866                                            &qeth_ccw_driver, 3, buf);
3867 }
3868
3869 int qeth_core_hardsetup_card(struct qeth_card *card)
3870 {
3871         int retries = 0;
3872         int rc;
3873
3874         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3875         atomic_set(&card->force_alloc_skb, 0);
3876 retry:
3877         if (retries)
3878                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3879                         dev_name(&card->gdev->dev));
3880         ccw_device_set_offline(CARD_DDEV(card));
3881         ccw_device_set_offline(CARD_WDEV(card));
3882         ccw_device_set_offline(CARD_RDEV(card));
3883         rc = ccw_device_set_online(CARD_RDEV(card));
3884         if (rc)
3885                 goto retriable;
3886         rc = ccw_device_set_online(CARD_WDEV(card));
3887         if (rc)
3888                 goto retriable;
3889         rc = ccw_device_set_online(CARD_DDEV(card));
3890         if (rc)
3891                 goto retriable;
3892         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3893 retriable:
3894         if (rc == -ERESTARTSYS) {
3895                 QETH_DBF_TEXT(SETUP, 2, "break1");
3896                 return rc;
3897         } else if (rc) {
3898                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3899                 if (++retries > 3)
3900                         goto out;
3901                 else
3902                         goto retry;
3903         }
3904         qeth_init_tokens(card);
3905         qeth_init_func_level(card);
3906         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3907         if (rc == -ERESTARTSYS) {
3908                 QETH_DBF_TEXT(SETUP, 2, "break2");
3909                 return rc;
3910         } else if (rc) {
3911                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3912                 if (--retries < 0)
3913                         goto out;
3914                 else
3915                         goto retry;
3916         }
3917         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3918         if (rc == -ERESTARTSYS) {
3919                 QETH_DBF_TEXT(SETUP, 2, "break3");
3920                 return rc;
3921         } else if (rc) {
3922                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3923                 if (--retries < 0)
3924                         goto out;
3925                 else
3926                         goto retry;
3927         }
3928         rc = qeth_mpc_initialize(card);
3929         if (rc) {
3930                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3931                 goto out;
3932         }
3933         return 0;
3934 out:
3935         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3936                 "an error on the device\n");
3937         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3938                 dev_name(&card->gdev->dev), rc);
3939         return rc;
3940 }
3941 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3942
3943 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3944                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3945 {
3946         struct page *page = virt_to_page(element->addr);
3947         if (*pskb == NULL) {
3948                 /* the upper protocol layers assume that there is data in the
3949                  * skb itself. Copy a small amount (64 bytes) to make them
3950                  * happy. */
3951                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3952                 if (!(*pskb))
3953                         return -ENOMEM;
3954                 skb_reserve(*pskb, ETH_HLEN);
3955                 if (data_len <= 64) {
3956                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3957                                 data_len);
3958                 } else {
3959                         get_page(page);
3960                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3961                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3962                                 data_len - 64);
3963                         (*pskb)->data_len += data_len - 64;
3964                         (*pskb)->len      += data_len - 64;
3965                         (*pskb)->truesize += data_len - 64;
3966                         (*pfrag)++;
3967                 }
3968         } else {
3969                 get_page(page);
3970                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3971                 (*pskb)->data_len += data_len;
3972                 (*pskb)->len      += data_len;
3973                 (*pskb)->truesize += data_len;
3974                 (*pfrag)++;
3975         }
3976         return 0;
3977 }
3978
3979 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3980                 struct qdio_buffer *buffer,
3981                 struct qdio_buffer_element **__element, int *__offset,
3982                 struct qeth_hdr **hdr)
3983 {
3984         struct qdio_buffer_element *element = *__element;
3985         int offset = *__offset;
3986         struct sk_buff *skb = NULL;
3987         int skb_len = 0;
3988         void *data_ptr;
3989         int data_len;
3990         int headroom = 0;
3991         int use_rx_sg = 0;
3992         int frag = 0;
3993
3994         /* qeth_hdr must not cross element boundaries */
3995         if (element->length < offset + sizeof(struct qeth_hdr)) {
3996                 if (qeth_is_last_sbale(element))
3997                         return NULL;
3998                 element++;
3999                 offset = 0;
4000                 if (element->length < sizeof(struct qeth_hdr))
4001                         return NULL;
4002         }
4003         *hdr = element->addr + offset;
4004
4005         offset += sizeof(struct qeth_hdr);
4006         switch ((*hdr)->hdr.l2.id) {
4007         case QETH_HEADER_TYPE_LAYER2:
4008                 skb_len = (*hdr)->hdr.l2.pkt_length;
4009                 break;
4010         case QETH_HEADER_TYPE_LAYER3:
4011                 skb_len = (*hdr)->hdr.l3.length;
4012                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4013                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4014                         headroom = TR_HLEN;
4015                 else
4016                         headroom = ETH_HLEN;
4017                 break;
4018         case QETH_HEADER_TYPE_OSN:
4019                 skb_len = (*hdr)->hdr.osn.pdu_length;
4020                 headroom = sizeof(struct qeth_hdr);
4021                 break;
4022         default:
4023                 break;
4024         }
4025
4026         if (!skb_len)
4027                 return NULL;
4028
4029         if ((skb_len >= card->options.rx_sg_cb) &&
4030             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4031             (!atomic_read(&card->force_alloc_skb))) {
4032                 use_rx_sg = 1;
4033         } else {
4034                 skb = dev_alloc_skb(skb_len + headroom);
4035                 if (!skb)
4036                         goto no_mem;
4037                 if (headroom)
4038                         skb_reserve(skb, headroom);
4039         }
4040
4041         data_ptr = element->addr + offset;
4042         while (skb_len) {
4043                 data_len = min(skb_len, (int)(element->length - offset));
4044                 if (data_len) {
4045                         if (use_rx_sg) {
4046                                 if (qeth_create_skb_frag(element, &skb, offset,
4047                                     &frag, data_len))
4048                                         goto no_mem;
4049                         } else {
4050                                 memcpy(skb_put(skb, data_len), data_ptr,
4051                                         data_len);
4052                         }
4053                 }
4054                 skb_len -= data_len;
4055                 if (skb_len) {
4056                         if (qeth_is_last_sbale(element)) {
4057                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4058                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4059                                         CARD_BUS_ID(card));
4060                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4061                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4062                                         CARD_BUS_ID(card));
4063                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4064                                 dev_kfree_skb_any(skb);
4065                                 card->stats.rx_errors++;
4066                                 return NULL;
4067                         }
4068                         element++;
4069                         offset = 0;
4070                         data_ptr = element->addr;
4071                 } else {
4072                         offset += data_len;
4073                 }
4074         }
4075         *__element = element;
4076         *__offset = offset;
4077         if (use_rx_sg && card->options.performance_stats) {
4078                 card->perf_stats.sg_skbs_rx++;
4079                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4080         }
4081         return skb;
4082 no_mem:
4083         if (net_ratelimit()) {
4084                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4085                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4086         }
4087         card->stats.rx_dropped++;
4088         return NULL;
4089 }
4090 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4091
4092 static void qeth_unregister_dbf_views(void)
4093 {
4094         int x;
4095         for (x = 0; x < QETH_DBF_INFOS; x++) {
4096                 debug_unregister(qeth_dbf[x].id);
4097                 qeth_dbf[x].id = NULL;
4098         }
4099 }
4100
4101 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
4102 {
4103         char dbf_txt_buf[32];
4104         va_list args;
4105
4106         if (level > (qeth_dbf[dbf_nix].id)->level)
4107                 return;
4108         va_start(args, fmt);
4109         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4110         va_end(args);
4111         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4112 }
4113 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4114
4115 static int qeth_register_dbf_views(void)
4116 {
4117         int ret;
4118         int x;
4119
4120         for (x = 0; x < QETH_DBF_INFOS; x++) {
4121                 /* register the areas */
4122                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4123                                                 qeth_dbf[x].pages,
4124                                                 qeth_dbf[x].areas,
4125                                                 qeth_dbf[x].len);
4126                 if (qeth_dbf[x].id == NULL) {
4127                         qeth_unregister_dbf_views();
4128                         return -ENOMEM;
4129                 }
4130
4131                 /* register a view */
4132                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4133                 if (ret) {
4134                         qeth_unregister_dbf_views();
4135                         return ret;
4136                 }
4137
4138                 /* set a passing level */
4139                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4140         }
4141
4142         return 0;
4143 }
4144
4145 int qeth_core_load_discipline(struct qeth_card *card,
4146                 enum qeth_discipline_id discipline)
4147 {
4148         int rc = 0;
4149         switch (discipline) {
4150         case QETH_DISCIPLINE_LAYER3:
4151                 card->discipline.ccwgdriver = try_then_request_module(
4152                         symbol_get(qeth_l3_ccwgroup_driver),
4153                         "qeth_l3");
4154                 break;
4155         case QETH_DISCIPLINE_LAYER2:
4156                 card->discipline.ccwgdriver = try_then_request_module(
4157                         symbol_get(qeth_l2_ccwgroup_driver),
4158                         "qeth_l2");
4159                 break;
4160         }
4161         if (!card->discipline.ccwgdriver) {
4162                 dev_err(&card->gdev->dev, "There is no kernel module to "
4163                         "support discipline %d\n", discipline);
4164                 rc = -EINVAL;
4165         }
4166         return rc;
4167 }
4168
4169 void qeth_core_free_discipline(struct qeth_card *card)
4170 {
4171         if (card->options.layer2)
4172                 symbol_put(qeth_l2_ccwgroup_driver);
4173         else
4174                 symbol_put(qeth_l3_ccwgroup_driver);
4175         card->discipline.ccwgdriver = NULL;
4176 }
4177
4178 static void qeth_determine_capabilities(struct qeth_card *card)
4179 {
4180         int rc;
4181         int length;
4182         char *prcd;
4183
4184         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4185         rc = ccw_device_set_online(CARD_DDEV(card));
4186         if (rc) {
4187                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4188                 goto out;
4189         }
4190
4191
4192         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4193         if (rc) {
4194                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4195                         dev_name(&card->gdev->dev), rc);
4196                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4197                 goto out_offline;
4198         }
4199         qeth_configure_unitaddr(card, prcd);
4200         qeth_configure_blkt_default(card, prcd);
4201         kfree(prcd);
4202
4203         rc = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
4204         if (rc)
4205                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4206
4207 out_offline:
4208         ccw_device_set_offline(CARD_DDEV(card));
4209 out:
4210         return;
4211 }
4212
4213 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4214 {
4215         struct qeth_card *card;
4216         struct device *dev;
4217         int rc;
4218         unsigned long flags;
4219
4220         QETH_DBF_TEXT(SETUP, 2, "probedev");
4221
4222         dev = &gdev->dev;
4223         if (!get_device(dev))
4224                 return -ENODEV;
4225
4226         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4227
4228         card = qeth_alloc_card();
4229         if (!card) {
4230                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4231                 rc = -ENOMEM;
4232                 goto err_dev;
4233         }
4234         card->read.ccwdev  = gdev->cdev[0];
4235         card->write.ccwdev = gdev->cdev[1];
4236         card->data.ccwdev  = gdev->cdev[2];
4237         dev_set_drvdata(&gdev->dev, card);
4238         card->gdev = gdev;
4239         gdev->cdev[0]->handler = qeth_irq;
4240         gdev->cdev[1]->handler = qeth_irq;
4241         gdev->cdev[2]->handler = qeth_irq;
4242
4243         rc = qeth_determine_card_type(card);
4244         if (rc) {
4245                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4246                 goto err_card;
4247         }
4248         rc = qeth_setup_card(card);
4249         if (rc) {
4250                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4251                 goto err_card;
4252         }
4253
4254         if (card->info.type == QETH_CARD_TYPE_OSN) {
4255                 rc = qeth_core_create_osn_attributes(dev);
4256                 if (rc)
4257                         goto err_card;
4258                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4259                 if (rc) {
4260                         qeth_core_remove_osn_attributes(dev);
4261                         goto err_card;
4262                 }
4263                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4264                 if (rc) {
4265                         qeth_core_free_discipline(card);
4266                         qeth_core_remove_osn_attributes(dev);
4267                         goto err_card;
4268                 }
4269         } else {
4270                 rc = qeth_core_create_device_attributes(dev);
4271                 if (rc)
4272                         goto err_card;
4273         }
4274
4275         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4276         list_add_tail(&card->list, &qeth_core_card_list.list);
4277         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4278
4279         qeth_determine_capabilities(card);
4280         return 0;
4281
4282 err_card:
4283         qeth_core_free_card(card);
4284 err_dev:
4285         put_device(dev);
4286         return rc;
4287 }
4288
4289 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4290 {
4291         unsigned long flags;
4292         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4293
4294         QETH_DBF_TEXT(SETUP, 2, "removedv");
4295         if (card->discipline.ccwgdriver) {
4296                 card->discipline.ccwgdriver->remove(gdev);
4297                 qeth_core_free_discipline(card);
4298         }
4299
4300         if (card->info.type == QETH_CARD_TYPE_OSN) {
4301                 qeth_core_remove_osn_attributes(&gdev->dev);
4302         } else {
4303                 qeth_core_remove_device_attributes(&gdev->dev);
4304         }
4305         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4306         list_del(&card->list);
4307         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4308         qeth_core_free_card(card);
4309         dev_set_drvdata(&gdev->dev, NULL);
4310         put_device(&gdev->dev);
4311         return;
4312 }
4313
4314 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4315 {
4316         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4317         int rc = 0;
4318         int def_discipline;
4319
4320         if (!card->discipline.ccwgdriver) {
4321                 if (card->info.type == QETH_CARD_TYPE_IQD)
4322                         def_discipline = QETH_DISCIPLINE_LAYER3;
4323                 else
4324                         def_discipline = QETH_DISCIPLINE_LAYER2;
4325                 rc = qeth_core_load_discipline(card, def_discipline);
4326                 if (rc)
4327                         goto err;
4328                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4329                 if (rc)
4330                         goto err;
4331         }
4332         rc = card->discipline.ccwgdriver->set_online(gdev);
4333 err:
4334         return rc;
4335 }
4336
4337 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4338 {
4339         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4340         return card->discipline.ccwgdriver->set_offline(gdev);
4341 }
4342
4343 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4344 {
4345         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4346         if (card->discipline.ccwgdriver &&
4347             card->discipline.ccwgdriver->shutdown)
4348                 card->discipline.ccwgdriver->shutdown(gdev);
4349 }
4350
4351 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4352 {
4353         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4354         if (card->discipline.ccwgdriver &&
4355             card->discipline.ccwgdriver->prepare)
4356                 return card->discipline.ccwgdriver->prepare(gdev);
4357         return 0;
4358 }
4359
4360 static void qeth_core_complete(struct ccwgroup_device *gdev)
4361 {
4362         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4363         if (card->discipline.ccwgdriver &&
4364             card->discipline.ccwgdriver->complete)
4365                 card->discipline.ccwgdriver->complete(gdev);
4366 }
4367
4368 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4369 {
4370         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4371         if (card->discipline.ccwgdriver &&
4372             card->discipline.ccwgdriver->freeze)
4373                 return card->discipline.ccwgdriver->freeze(gdev);
4374         return 0;
4375 }
4376
4377 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4378 {
4379         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4380         if (card->discipline.ccwgdriver &&
4381             card->discipline.ccwgdriver->thaw)
4382                 return card->discipline.ccwgdriver->thaw(gdev);
4383         return 0;
4384 }
4385
4386 static int qeth_core_restore(struct ccwgroup_device *gdev)
4387 {
4388         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4389         if (card->discipline.ccwgdriver &&
4390             card->discipline.ccwgdriver->restore)
4391                 return card->discipline.ccwgdriver->restore(gdev);
4392         return 0;
4393 }
4394
4395 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4396         .owner = THIS_MODULE,
4397         .name = "qeth",
4398         .driver_id = 0xD8C5E3C8,
4399         .probe = qeth_core_probe_device,
4400         .remove = qeth_core_remove_device,
4401         .set_online = qeth_core_set_online,
4402         .set_offline = qeth_core_set_offline,
4403         .shutdown = qeth_core_shutdown,
4404         .prepare = qeth_core_prepare,
4405         .complete = qeth_core_complete,
4406         .freeze = qeth_core_freeze,
4407         .thaw = qeth_core_thaw,
4408         .restore = qeth_core_restore,
4409 };
4410
4411 static ssize_t
4412 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4413                            size_t count)
4414 {
4415         int err;
4416         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4417                                         qeth_core_ccwgroup_driver.driver_id);
4418         if (err)
4419                 return err;
4420         else
4421                 return count;
4422 }
4423
4424 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4425
4426 static struct {
4427         const char str[ETH_GSTRING_LEN];
4428 } qeth_ethtool_stats_keys[] = {
4429 /*  0 */{"rx skbs"},
4430         {"rx buffers"},
4431         {"tx skbs"},
4432         {"tx buffers"},
4433         {"tx skbs no packing"},
4434         {"tx buffers no packing"},
4435         {"tx skbs packing"},
4436         {"tx buffers packing"},
4437         {"tx sg skbs"},
4438         {"tx sg frags"},
4439 /* 10 */{"rx sg skbs"},
4440         {"rx sg frags"},
4441         {"rx sg page allocs"},
4442         {"tx large kbytes"},
4443         {"tx large count"},
4444         {"tx pk state ch n->p"},
4445         {"tx pk state ch p->n"},
4446         {"tx pk watermark low"},
4447         {"tx pk watermark high"},
4448         {"queue 0 buffer usage"},
4449 /* 20 */{"queue 1 buffer usage"},
4450         {"queue 2 buffer usage"},
4451         {"queue 3 buffer usage"},
4452         {"rx handler time"},
4453         {"rx handler count"},
4454         {"rx do_QDIO time"},
4455         {"rx do_QDIO count"},
4456         {"tx handler time"},
4457         {"tx handler count"},
4458         {"tx time"},
4459 /* 30 */{"tx count"},
4460         {"tx do_QDIO time"},
4461         {"tx do_QDIO count"},
4462         {"tx csum"},
4463         {"tx lin"},
4464 };
4465
4466 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4467 {
4468         switch (stringset) {
4469         case ETH_SS_STATS:
4470                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4471         default:
4472                 return -EINVAL;
4473         }
4474 }
4475 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4476
4477 void qeth_core_get_ethtool_stats(struct net_device *dev,
4478                 struct ethtool_stats *stats, u64 *data)
4479 {
4480         struct qeth_card *card = dev->ml_priv;
4481         data[0] = card->stats.rx_packets -
4482                                 card->perf_stats.initial_rx_packets;
4483         data[1] = card->perf_stats.bufs_rec;
4484         data[2] = card->stats.tx_packets -
4485                                 card->perf_stats.initial_tx_packets;
4486         data[3] = card->perf_stats.bufs_sent;
4487         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4488                         - card->perf_stats.skbs_sent_pack;
4489         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4490         data[6] = card->perf_stats.skbs_sent_pack;
4491         data[7] = card->perf_stats.bufs_sent_pack;
4492         data[8] = card->perf_stats.sg_skbs_sent;
4493         data[9] = card->perf_stats.sg_frags_sent;
4494         data[10] = card->perf_stats.sg_skbs_rx;
4495         data[11] = card->perf_stats.sg_frags_rx;
4496         data[12] = card->perf_stats.sg_alloc_page_rx;
4497         data[13] = (card->perf_stats.large_send_bytes >> 10);
4498         data[14] = card->perf_stats.large_send_cnt;
4499         data[15] = card->perf_stats.sc_dp_p;
4500         data[16] = card->perf_stats.sc_p_dp;
4501         data[17] = QETH_LOW_WATERMARK_PACK;
4502         data[18] = QETH_HIGH_WATERMARK_PACK;
4503         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4504         data[20] = (card->qdio.no_out_queues > 1) ?
4505                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4506         data[21] = (card->qdio.no_out_queues > 2) ?
4507                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4508         data[22] = (card->qdio.no_out_queues > 3) ?
4509                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4510         data[23] = card->perf_stats.inbound_time;
4511         data[24] = card->perf_stats.inbound_cnt;
4512         data[25] = card->perf_stats.inbound_do_qdio_time;
4513         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4514         data[27] = card->perf_stats.outbound_handler_time;
4515         data[28] = card->perf_stats.outbound_handler_cnt;
4516         data[29] = card->perf_stats.outbound_time;
4517         data[30] = card->perf_stats.outbound_cnt;
4518         data[31] = card->perf_stats.outbound_do_qdio_time;
4519         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4520         data[33] = card->perf_stats.tx_csum;
4521         data[34] = card->perf_stats.tx_lin;
4522 }
4523 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4524
4525 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4526 {
4527         switch (stringset) {
4528         case ETH_SS_STATS:
4529                 memcpy(data, &qeth_ethtool_stats_keys,
4530                         sizeof(qeth_ethtool_stats_keys));
4531                 break;
4532         default:
4533                 WARN_ON(1);
4534                 break;
4535         }
4536 }
4537 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4538
4539 void qeth_core_get_drvinfo(struct net_device *dev,
4540                 struct ethtool_drvinfo *info)
4541 {
4542         struct qeth_card *card = dev->ml_priv;
4543         if (card->options.layer2)
4544                 strcpy(info->driver, "qeth_l2");
4545         else
4546                 strcpy(info->driver, "qeth_l3");
4547
4548         strcpy(info->version, "1.0");
4549         strcpy(info->fw_version, card->info.mcl_level);
4550         sprintf(info->bus_info, "%s/%s/%s",
4551                         CARD_RDEV_ID(card),
4552                         CARD_WDEV_ID(card),
4553                         CARD_DDEV_ID(card));
4554 }
4555 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4556
4557 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4558                                         struct ethtool_cmd *ecmd)
4559 {
4560         struct qeth_card *card = netdev->ml_priv;
4561         enum qeth_link_types link_type;
4562
4563         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4564                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4565         else
4566                 link_type = card->info.link_type;
4567
4568         ecmd->transceiver = XCVR_INTERNAL;
4569         ecmd->supported = SUPPORTED_Autoneg;
4570         ecmd->advertising = ADVERTISED_Autoneg;
4571         ecmd->duplex = DUPLEX_FULL;
4572         ecmd->autoneg = AUTONEG_ENABLE;
4573
4574         switch (link_type) {
4575         case QETH_LINK_TYPE_FAST_ETH:
4576         case QETH_LINK_TYPE_LANE_ETH100:
4577                 ecmd->supported |= SUPPORTED_10baseT_Half |
4578                                         SUPPORTED_10baseT_Full |
4579                                         SUPPORTED_100baseT_Half |
4580                                         SUPPORTED_100baseT_Full |
4581                                         SUPPORTED_TP;
4582                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4583                                         ADVERTISED_10baseT_Full |
4584                                         ADVERTISED_100baseT_Half |
4585                                         ADVERTISED_100baseT_Full |
4586                                         ADVERTISED_TP;
4587                 ecmd->speed = SPEED_100;
4588                 ecmd->port = PORT_TP;
4589                 break;
4590
4591         case QETH_LINK_TYPE_GBIT_ETH:
4592         case QETH_LINK_TYPE_LANE_ETH1000:
4593                 ecmd->supported |= SUPPORTED_10baseT_Half |
4594                                         SUPPORTED_10baseT_Full |
4595                                         SUPPORTED_100baseT_Half |
4596                                         SUPPORTED_100baseT_Full |
4597                                         SUPPORTED_1000baseT_Half |
4598                                         SUPPORTED_1000baseT_Full |
4599                                         SUPPORTED_FIBRE;
4600                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4601                                         ADVERTISED_10baseT_Full |
4602                                         ADVERTISED_100baseT_Half |
4603                                         ADVERTISED_100baseT_Full |
4604                                         ADVERTISED_1000baseT_Half |
4605                                         ADVERTISED_1000baseT_Full |
4606                                         ADVERTISED_FIBRE;
4607                 ecmd->speed = SPEED_1000;
4608                 ecmd->port = PORT_FIBRE;
4609                 break;
4610
4611         case QETH_LINK_TYPE_10GBIT_ETH:
4612                 ecmd->supported |= SUPPORTED_10baseT_Half |
4613                                         SUPPORTED_10baseT_Full |
4614                                         SUPPORTED_100baseT_Half |
4615                                         SUPPORTED_100baseT_Full |
4616                                         SUPPORTED_1000baseT_Half |
4617                                         SUPPORTED_1000baseT_Full |
4618                                         SUPPORTED_10000baseT_Full |
4619                                         SUPPORTED_FIBRE;
4620                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4621                                         ADVERTISED_10baseT_Full |
4622                                         ADVERTISED_100baseT_Half |
4623                                         ADVERTISED_100baseT_Full |
4624                                         ADVERTISED_1000baseT_Half |
4625                                         ADVERTISED_1000baseT_Full |
4626                                         ADVERTISED_10000baseT_Full |
4627                                         ADVERTISED_FIBRE;
4628                 ecmd->speed = SPEED_10000;
4629                 ecmd->port = PORT_FIBRE;
4630                 break;
4631
4632         default:
4633                 ecmd->supported |= SUPPORTED_10baseT_Half |
4634                                         SUPPORTED_10baseT_Full |
4635                                         SUPPORTED_TP;
4636                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4637                                         ADVERTISED_10baseT_Full |
4638                                         ADVERTISED_TP;
4639                 ecmd->speed = SPEED_10;
4640                 ecmd->port = PORT_TP;
4641         }
4642
4643         return 0;
4644 }
4645 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4646
4647 static int __init qeth_core_init(void)
4648 {
4649         int rc;
4650
4651         pr_info("loading core functions\n");
4652         INIT_LIST_HEAD(&qeth_core_card_list.list);
4653         rwlock_init(&qeth_core_card_list.rwlock);
4654
4655         rc = qeth_register_dbf_views();
4656         if (rc)
4657                 goto out_err;
4658         rc = ccw_driver_register(&qeth_ccw_driver);
4659         if (rc)
4660                 goto ccw_err;
4661         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4662         if (rc)
4663                 goto ccwgroup_err;
4664         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4665                                 &driver_attr_group);
4666         if (rc)
4667                 goto driver_err;
4668         qeth_core_root_dev = root_device_register("qeth");
4669         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4670         if (rc)
4671                 goto register_err;
4672
4673         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4674                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4675         if (!qeth_core_header_cache) {
4676                 rc = -ENOMEM;
4677                 goto slab_err;
4678         }
4679
4680         return 0;
4681 slab_err:
4682         root_device_unregister(qeth_core_root_dev);
4683 register_err:
4684         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4685                            &driver_attr_group);
4686 driver_err:
4687         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4688 ccwgroup_err:
4689         ccw_driver_unregister(&qeth_ccw_driver);
4690 ccw_err:
4691         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4692         qeth_unregister_dbf_views();
4693 out_err:
4694         pr_err("Initializing the qeth device driver failed\n");
4695         return rc;
4696 }
4697
4698 static void __exit qeth_core_exit(void)
4699 {
4700         root_device_unregister(qeth_core_root_dev);
4701         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4702                            &driver_attr_group);
4703         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4704         ccw_driver_unregister(&qeth_ccw_driver);
4705         kmem_cache_destroy(qeth_core_header_cache);
4706         qeth_unregister_dbf_views();
4707         pr_info("core functions removed\n");
4708 }
4709
4710 module_init(qeth_core_init);
4711 module_exit(qeth_core_exit);
4712 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4713 MODULE_DESCRIPTION("qeth core functions");
4714 MODULE_LICENSE("GPL");