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_cleanup(CARD_DDEV(card),
1296                                 QDIO_FLAG_CLEANUP_USING_HALT);
1297                 else
1298                         rc = qdio_cleanup(CARD_DDEV(card),
1299                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1300                 if (rc)
1301                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1302                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1303                 break;
1304         case QETH_QDIO_CLEANING:
1305                 return rc;
1306         default:
1307                 break;
1308         }
1309         rc = qeth_clear_halt_card(card, use_halt);
1310         if (rc)
1311                 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1312         card->state = CARD_STATE_DOWN;
1313         return rc;
1314 }
1315 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1316
1317 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1318                                int *length)
1319 {
1320         struct ciw *ciw;
1321         char *rcd_buf;
1322         int ret;
1323         struct qeth_channel *channel = &card->data;
1324         unsigned long flags;
1325
1326         /*
1327          * scan for RCD command in extended SenseID data
1328          */
1329         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1330         if (!ciw || ciw->cmd == 0)
1331                 return -EOPNOTSUPP;
1332         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1333         if (!rcd_buf)
1334                 return -ENOMEM;
1335
1336         channel->ccw.cmd_code = ciw->cmd;
1337         channel->ccw.cda = (__u32) __pa(rcd_buf);
1338         channel->ccw.count = ciw->count;
1339         channel->ccw.flags = CCW_FLAG_SLI;
1340         channel->state = CH_STATE_RCD;
1341         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1342         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1343                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1344                                        QETH_RCD_TIMEOUT);
1345         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1346         if (!ret)
1347                 wait_event(card->wait_q,
1348                            (channel->state == CH_STATE_RCD_DONE ||
1349                             channel->state == CH_STATE_DOWN));
1350         if (channel->state == CH_STATE_DOWN)
1351                 ret = -EIO;
1352         else
1353                 channel->state = CH_STATE_DOWN;
1354         if (ret) {
1355                 kfree(rcd_buf);
1356                 *buffer = NULL;
1357                 *length = 0;
1358         } else {
1359                 *length = ciw->count;
1360                 *buffer = rcd_buf;
1361         }
1362         return ret;
1363 }
1364
1365 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1366 {
1367         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1368         card->info.chpid = prcd[30];
1369         card->info.unit_addr2 = prcd[31];
1370         card->info.cula = prcd[63];
1371         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1372                                (prcd[0x11] == _ascebc['M']));
1373 }
1374
1375 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1376 {
1377         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1378
1379         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1380                 card->info.blkt.time_total = 250;
1381                 card->info.blkt.inter_packet = 5;
1382                 card->info.blkt.inter_packet_jumbo = 15;
1383         } else {
1384                 card->info.blkt.time_total = 0;
1385                 card->info.blkt.inter_packet = 0;
1386                 card->info.blkt.inter_packet_jumbo = 0;
1387         }
1388 }
1389
1390 static void qeth_init_tokens(struct qeth_card *card)
1391 {
1392         card->token.issuer_rm_w = 0x00010103UL;
1393         card->token.cm_filter_w = 0x00010108UL;
1394         card->token.cm_connection_w = 0x0001010aUL;
1395         card->token.ulp_filter_w = 0x0001010bUL;
1396         card->token.ulp_connection_w = 0x0001010dUL;
1397 }
1398
1399 static void qeth_init_func_level(struct qeth_card *card)
1400 {
1401         if (card->ipato.enabled) {
1402                 if (card->info.type == QETH_CARD_TYPE_IQD)
1403                                 card->info.func_level =
1404                                         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1405                 else
1406                                 card->info.func_level =
1407                                         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1408         } else {
1409                 if (card->info.type == QETH_CARD_TYPE_IQD)
1410                 /*FIXME:why do we have same values for  dis and ena for
1411                   osae??? */
1412                         card->info.func_level =
1413                                 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1414                 else
1415                         card->info.func_level =
1416                                 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1417         }
1418 }
1419
1420 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1421                 void (*idx_reply_cb)(struct qeth_channel *,
1422                         struct qeth_cmd_buffer *))
1423 {
1424         struct qeth_cmd_buffer *iob;
1425         unsigned long flags;
1426         int rc;
1427         struct qeth_card *card;
1428
1429         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1430         card = CARD_FROM_CDEV(channel->ccwdev);
1431         iob = qeth_get_buffer(channel);
1432         iob->callback = idx_reply_cb;
1433         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1434         channel->ccw.count = QETH_BUFSIZE;
1435         channel->ccw.cda = (__u32) __pa(iob->data);
1436
1437         wait_event(card->wait_q,
1438                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1439         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1440         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1441         rc = ccw_device_start(channel->ccwdev,
1442                               &channel->ccw, (addr_t) iob, 0, 0);
1443         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1444
1445         if (rc) {
1446                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1447                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1448                 atomic_set(&channel->irq_pending, 0);
1449                 wake_up(&card->wait_q);
1450                 return rc;
1451         }
1452         rc = wait_event_interruptible_timeout(card->wait_q,
1453                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1454         if (rc == -ERESTARTSYS)
1455                 return rc;
1456         if (channel->state != CH_STATE_UP) {
1457                 rc = -ETIME;
1458                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1459                 qeth_clear_cmd_buffers(channel);
1460         } else
1461                 rc = 0;
1462         return rc;
1463 }
1464
1465 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1466                 void (*idx_reply_cb)(struct qeth_channel *,
1467                         struct qeth_cmd_buffer *))
1468 {
1469         struct qeth_card *card;
1470         struct qeth_cmd_buffer *iob;
1471         unsigned long flags;
1472         __u16 temp;
1473         __u8 tmp;
1474         int rc;
1475         struct ccw_dev_id temp_devid;
1476
1477         card = CARD_FROM_CDEV(channel->ccwdev);
1478
1479         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1480
1481         iob = qeth_get_buffer(channel);
1482         iob->callback = idx_reply_cb;
1483         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1484         channel->ccw.count = IDX_ACTIVATE_SIZE;
1485         channel->ccw.cda = (__u32) __pa(iob->data);
1486         if (channel == &card->write) {
1487                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1488                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1489                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1490                 card->seqno.trans_hdr++;
1491         } else {
1492                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1493                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1494                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1495         }
1496         tmp = ((__u8)card->info.portno) | 0x80;
1497         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1498         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1499                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1500         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1501                &card->info.func_level, sizeof(__u16));
1502         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1503         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1504         temp = (card->info.cula << 8) + card->info.unit_addr2;
1505         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1506
1507         wait_event(card->wait_q,
1508                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1509         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1510         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1511         rc = ccw_device_start(channel->ccwdev,
1512                               &channel->ccw, (addr_t) iob, 0, 0);
1513         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1514
1515         if (rc) {
1516                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1517                         rc);
1518                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1519                 atomic_set(&channel->irq_pending, 0);
1520                 wake_up(&card->wait_q);
1521                 return rc;
1522         }
1523         rc = wait_event_interruptible_timeout(card->wait_q,
1524                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1525         if (rc == -ERESTARTSYS)
1526                 return rc;
1527         if (channel->state != CH_STATE_ACTIVATING) {
1528                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1529                         " failed to recover an error on the device\n");
1530                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1531                         dev_name(&channel->ccwdev->dev));
1532                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1533                 qeth_clear_cmd_buffers(channel);
1534                 return -ETIME;
1535         }
1536         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1537 }
1538
1539 static int qeth_peer_func_level(int level)
1540 {
1541         if ((level & 0xff) == 8)
1542                 return (level & 0xff) + 0x400;
1543         if (((level >> 8) & 3) == 1)
1544                 return (level & 0xff) + 0x200;
1545         return level;
1546 }
1547
1548 static void qeth_idx_write_cb(struct qeth_channel *channel,
1549                 struct qeth_cmd_buffer *iob)
1550 {
1551         struct qeth_card *card;
1552         __u16 temp;
1553
1554         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1555
1556         if (channel->state == CH_STATE_DOWN) {
1557                 channel->state = CH_STATE_ACTIVATING;
1558                 goto out;
1559         }
1560         card = CARD_FROM_CDEV(channel->ccwdev);
1561
1562         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1563                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1564                         dev_err(&card->write.ccwdev->dev,
1565                                 "The adapter is used exclusively by another "
1566                                 "host\n");
1567                 else
1568                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1569                                 " negative reply\n",
1570                                 dev_name(&card->write.ccwdev->dev));
1571                 goto out;
1572         }
1573         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1574         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1575                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1576                         "function level mismatch (sent: 0x%x, received: "
1577                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1578                         card->info.func_level, temp);
1579                 goto out;
1580         }
1581         channel->state = CH_STATE_UP;
1582 out:
1583         qeth_release_buffer(channel, iob);
1584 }
1585
1586 static void qeth_idx_read_cb(struct qeth_channel *channel,
1587                 struct qeth_cmd_buffer *iob)
1588 {
1589         struct qeth_card *card;
1590         __u16 temp;
1591
1592         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1593         if (channel->state == CH_STATE_DOWN) {
1594                 channel->state = CH_STATE_ACTIVATING;
1595                 goto out;
1596         }
1597
1598         card = CARD_FROM_CDEV(channel->ccwdev);
1599         if (qeth_check_idx_response(iob->data))
1600                         goto out;
1601
1602         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1603                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1604                         dev_err(&card->write.ccwdev->dev,
1605                                 "The adapter is used exclusively by another "
1606                                 "host\n");
1607                 else
1608                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1609                                 " negative reply\n",
1610                                 dev_name(&card->read.ccwdev->dev));
1611                 goto out;
1612         }
1613
1614 /**
1615  * temporary fix for microcode bug
1616  * to revert it,replace OR by AND
1617  */
1618         if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1619              (card->info.type == QETH_CARD_TYPE_OSAE))
1620                 card->info.portname_required = 1;
1621
1622         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1623         if (temp != qeth_peer_func_level(card->info.func_level)) {
1624                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1625                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
1626                         dev_name(&card->read.ccwdev->dev),
1627                         card->info.func_level, temp);
1628                 goto out;
1629         }
1630         memcpy(&card->token.issuer_rm_r,
1631                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1632                QETH_MPC_TOKEN_LENGTH);
1633         memcpy(&card->info.mcl_level[0],
1634                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1635         channel->state = CH_STATE_UP;
1636 out:
1637         qeth_release_buffer(channel, iob);
1638 }
1639
1640 void qeth_prepare_control_data(struct qeth_card *card, int len,
1641                 struct qeth_cmd_buffer *iob)
1642 {
1643         qeth_setup_ccw(&card->write, iob->data, len);
1644         iob->callback = qeth_release_buffer;
1645
1646         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1647                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1648         card->seqno.trans_hdr++;
1649         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1650                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1651         card->seqno.pdu_hdr++;
1652         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1653                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1654         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1655 }
1656 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1657
1658 int qeth_send_control_data(struct qeth_card *card, int len,
1659                 struct qeth_cmd_buffer *iob,
1660                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1661                         unsigned long),
1662                 void *reply_param)
1663 {
1664         int rc;
1665         unsigned long flags;
1666         struct qeth_reply *reply = NULL;
1667         unsigned long timeout, event_timeout;
1668         struct qeth_ipa_cmd *cmd;
1669
1670         QETH_DBF_TEXT(TRACE, 2, "sendctl");
1671
1672         reply = qeth_alloc_reply(card);
1673         if (!reply) {
1674                 return -ENOMEM;
1675         }
1676         reply->callback = reply_cb;
1677         reply->param = reply_param;
1678         if (card->state == CARD_STATE_DOWN)
1679                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1680         else
1681                 reply->seqno = card->seqno.ipa++;
1682         init_waitqueue_head(&reply->wait_q);
1683         spin_lock_irqsave(&card->lock, flags);
1684         list_add_tail(&reply->list, &card->cmd_waiter_list);
1685         spin_unlock_irqrestore(&card->lock, flags);
1686         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1687
1688         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1689         qeth_prepare_control_data(card, len, iob);
1690
1691         if (IS_IPA(iob->data))
1692                 event_timeout = QETH_IPA_TIMEOUT;
1693         else
1694                 event_timeout = QETH_TIMEOUT;
1695         timeout = jiffies + event_timeout;
1696
1697         QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1698         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1699         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1700                               (addr_t) iob, 0, 0);
1701         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1702         if (rc) {
1703                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1704                         "ccw_device_start rc = %i\n",
1705                         dev_name(&card->write.ccwdev->dev), rc);
1706                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1707                 spin_lock_irqsave(&card->lock, flags);
1708                 list_del_init(&reply->list);
1709                 qeth_put_reply(reply);
1710                 spin_unlock_irqrestore(&card->lock, flags);
1711                 qeth_release_buffer(iob->channel, iob);
1712                 atomic_set(&card->write.irq_pending, 0);
1713                 wake_up(&card->wait_q);
1714                 return rc;
1715         }
1716
1717         /* we have only one long running ipassist, since we can ensure
1718            process context of this command we can sleep */
1719         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1720         if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1721             (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1722                 if (!wait_event_timeout(reply->wait_q,
1723                     atomic_read(&reply->received), event_timeout))
1724                         goto time_err;
1725         } else {
1726                 while (!atomic_read(&reply->received)) {
1727                         if (time_after(jiffies, timeout))
1728                                 goto time_err;
1729                         cpu_relax();
1730                 };
1731         }
1732
1733         rc = reply->rc;
1734         qeth_put_reply(reply);
1735         return rc;
1736
1737 time_err:
1738         spin_lock_irqsave(&reply->card->lock, flags);
1739         list_del_init(&reply->list);
1740         spin_unlock_irqrestore(&reply->card->lock, flags);
1741         reply->rc = -ETIME;
1742         atomic_inc(&reply->received);
1743         wake_up(&reply->wait_q);
1744         rc = reply->rc;
1745         qeth_put_reply(reply);
1746         return rc;
1747 }
1748 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1749
1750 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1751                 unsigned long data)
1752 {
1753         struct qeth_cmd_buffer *iob;
1754
1755         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1756
1757         iob = (struct qeth_cmd_buffer *) data;
1758         memcpy(&card->token.cm_filter_r,
1759                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1760                QETH_MPC_TOKEN_LENGTH);
1761         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1762         return 0;
1763 }
1764
1765 static int qeth_cm_enable(struct qeth_card *card)
1766 {
1767         int rc;
1768         struct qeth_cmd_buffer *iob;
1769
1770         QETH_DBF_TEXT(SETUP, 2, "cmenable");
1771
1772         iob = qeth_wait_for_buffer(&card->write);
1773         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1774         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1775                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1776         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1777                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1778
1779         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1780                                     qeth_cm_enable_cb, NULL);
1781         return rc;
1782 }
1783
1784 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1785                 unsigned long data)
1786 {
1787
1788         struct qeth_cmd_buffer *iob;
1789
1790         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1791
1792         iob = (struct qeth_cmd_buffer *) data;
1793         memcpy(&card->token.cm_connection_r,
1794                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1795                QETH_MPC_TOKEN_LENGTH);
1796         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1797         return 0;
1798 }
1799
1800 static int qeth_cm_setup(struct qeth_card *card)
1801 {
1802         int rc;
1803         struct qeth_cmd_buffer *iob;
1804
1805         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1806
1807         iob = qeth_wait_for_buffer(&card->write);
1808         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1809         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1810                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1811         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1812                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1813         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1814                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1815         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1816                                     qeth_cm_setup_cb, NULL);
1817         return rc;
1818
1819 }
1820
1821 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1822 {
1823         switch (card->info.type) {
1824         case QETH_CARD_TYPE_UNKNOWN:
1825                 return 1500;
1826         case QETH_CARD_TYPE_IQD:
1827                 return card->info.max_mtu;
1828         case QETH_CARD_TYPE_OSAE:
1829                 switch (card->info.link_type) {
1830                 case QETH_LINK_TYPE_HSTR:
1831                 case QETH_LINK_TYPE_LANE_TR:
1832                         return 2000;
1833                 default:
1834                         return 1492;
1835                 }
1836         default:
1837                 return 1500;
1838         }
1839 }
1840
1841 static inline int qeth_get_max_mtu_for_card(int cardtype)
1842 {
1843         switch (cardtype) {
1844
1845         case QETH_CARD_TYPE_UNKNOWN:
1846         case QETH_CARD_TYPE_OSAE:
1847         case QETH_CARD_TYPE_OSN:
1848                 return 61440;
1849         case QETH_CARD_TYPE_IQD:
1850                 return 57344;
1851         default:
1852                 return 1500;
1853         }
1854 }
1855
1856 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1857 {
1858         switch (cardtype) {
1859         case QETH_CARD_TYPE_IQD:
1860                 return 1;
1861         default:
1862                 return 0;
1863         }
1864 }
1865
1866 static inline int qeth_get_mtu_outof_framesize(int framesize)
1867 {
1868         switch (framesize) {
1869         case 0x4000:
1870                 return 8192;
1871         case 0x6000:
1872                 return 16384;
1873         case 0xa000:
1874                 return 32768;
1875         case 0xffff:
1876                 return 57344;
1877         default:
1878                 return 0;
1879         }
1880 }
1881
1882 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1883 {
1884         switch (card->info.type) {
1885         case QETH_CARD_TYPE_OSAE:
1886                 return ((mtu >= 576) && (mtu <= 61440));
1887         case QETH_CARD_TYPE_IQD:
1888                 return ((mtu >= 576) &&
1889                         (mtu <= card->info.max_mtu + 4096 - 32));
1890         case QETH_CARD_TYPE_OSN:
1891         case QETH_CARD_TYPE_UNKNOWN:
1892         default:
1893                 return 1;
1894         }
1895 }
1896
1897 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1898                 unsigned long data)
1899 {
1900
1901         __u16 mtu, framesize;
1902         __u16 len;
1903         __u8 link_type;
1904         struct qeth_cmd_buffer *iob;
1905
1906         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1907
1908         iob = (struct qeth_cmd_buffer *) data;
1909         memcpy(&card->token.ulp_filter_r,
1910                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1911                QETH_MPC_TOKEN_LENGTH);
1912         if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1913                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1914                 mtu = qeth_get_mtu_outof_framesize(framesize);
1915                 if (!mtu) {
1916                         iob->rc = -EINVAL;
1917                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1918                         return 0;
1919                 }
1920                 card->info.max_mtu = mtu;
1921                 card->info.initial_mtu = mtu;
1922                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1923         } else {
1924                 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1925                 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1926                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1927         }
1928
1929         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1930         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1931                 memcpy(&link_type,
1932                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1933                 card->info.link_type = link_type;
1934         } else
1935                 card->info.link_type = 0;
1936         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1937         return 0;
1938 }
1939
1940 static int qeth_ulp_enable(struct qeth_card *card)
1941 {
1942         int rc;
1943         char prot_type;
1944         struct qeth_cmd_buffer *iob;
1945
1946         /*FIXME: trace view callbacks*/
1947         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1948
1949         iob = qeth_wait_for_buffer(&card->write);
1950         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1951
1952         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1953                 (__u8) card->info.portno;
1954         if (card->options.layer2)
1955                 if (card->info.type == QETH_CARD_TYPE_OSN)
1956                         prot_type = QETH_PROT_OSN2;
1957                 else
1958                         prot_type = QETH_PROT_LAYER2;
1959         else
1960                 prot_type = QETH_PROT_TCPIP;
1961
1962         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1963         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1964                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1965         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1966                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1967         memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1968                card->info.portname, 9);
1969         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1970                                     qeth_ulp_enable_cb, NULL);
1971         return rc;
1972
1973 }
1974
1975 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1976                 unsigned long data)
1977 {
1978         struct qeth_cmd_buffer *iob;
1979
1980         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1981
1982         iob = (struct qeth_cmd_buffer *) data;
1983         memcpy(&card->token.ulp_connection_r,
1984                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1985                QETH_MPC_TOKEN_LENGTH);
1986         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
1987         return 0;
1988 }
1989
1990 static int qeth_ulp_setup(struct qeth_card *card)
1991 {
1992         int rc;
1993         __u16 temp;
1994         struct qeth_cmd_buffer *iob;
1995         struct ccw_dev_id dev_id;
1996
1997         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
1998
1999         iob = qeth_wait_for_buffer(&card->write);
2000         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2001
2002         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2003                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2004         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2005                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2006         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2007                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2008
2009         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2010         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2011         temp = (card->info.cula << 8) + card->info.unit_addr2;
2012         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2013         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2014                                     qeth_ulp_setup_cb, NULL);
2015         return rc;
2016 }
2017
2018 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2019 {
2020         int i, j;
2021
2022         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2023
2024         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2025                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2026                 return 0;
2027
2028         card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2029                                   GFP_KERNEL);
2030         if (!card->qdio.in_q)
2031                 goto out_nomem;
2032         QETH_DBF_TEXT(SETUP, 2, "inq");
2033         QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2034         memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2035         /* give inbound qeth_qdio_buffers their qdio_buffers */
2036         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2037                 card->qdio.in_q->bufs[i].buffer =
2038                         &card->qdio.in_q->qdio_bufs[i];
2039         /* inbound buffer pool */
2040         if (qeth_alloc_buffer_pool(card))
2041                 goto out_freeinq;
2042         /* outbound */
2043         card->qdio.out_qs =
2044                 kmalloc(card->qdio.no_out_queues *
2045                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2046         if (!card->qdio.out_qs)
2047                 goto out_freepool;
2048         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2049                 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2050                                                GFP_KERNEL);
2051                 if (!card->qdio.out_qs[i])
2052                         goto out_freeoutq;
2053                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2054                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2055                 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2056                 card->qdio.out_qs[i]->queue_no = i;
2057                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2058                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2059                         card->qdio.out_qs[i]->bufs[j].buffer =
2060                                 &card->qdio.out_qs[i]->qdio_bufs[j];
2061                         skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2062                                             skb_list);
2063                         lockdep_set_class(
2064                                 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2065                                 &qdio_out_skb_queue_key);
2066                         INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2067                 }
2068         }
2069         return 0;
2070
2071 out_freeoutq:
2072         while (i > 0)
2073                 kfree(card->qdio.out_qs[--i]);
2074         kfree(card->qdio.out_qs);
2075         card->qdio.out_qs = NULL;
2076 out_freepool:
2077         qeth_free_buffer_pool(card);
2078 out_freeinq:
2079         kfree(card->qdio.in_q);
2080         card->qdio.in_q = NULL;
2081 out_nomem:
2082         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2083         return -ENOMEM;
2084 }
2085
2086 static void qeth_create_qib_param_field(struct qeth_card *card,
2087                 char *param_field)
2088 {
2089
2090         param_field[0] = _ascebc['P'];
2091         param_field[1] = _ascebc['C'];
2092         param_field[2] = _ascebc['I'];
2093         param_field[3] = _ascebc['T'];
2094         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2095         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2096         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2097 }
2098
2099 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2100                 char *param_field)
2101 {
2102         param_field[16] = _ascebc['B'];
2103         param_field[17] = _ascebc['L'];
2104         param_field[18] = _ascebc['K'];
2105         param_field[19] = _ascebc['T'];
2106         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2107         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2108         *((unsigned int *) (&param_field[28])) =
2109                 card->info.blkt.inter_packet_jumbo;
2110 }
2111
2112 static int qeth_qdio_activate(struct qeth_card *card)
2113 {
2114         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2115         return qdio_activate(CARD_DDEV(card));
2116 }
2117
2118 static int qeth_dm_act(struct qeth_card *card)
2119 {
2120         int rc;
2121         struct qeth_cmd_buffer *iob;
2122
2123         QETH_DBF_TEXT(SETUP, 2, "dmact");
2124
2125         iob = qeth_wait_for_buffer(&card->write);
2126         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2127
2128         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2129                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2130         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2131                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2132         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2133         return rc;
2134 }
2135
2136 static int qeth_mpc_initialize(struct qeth_card *card)
2137 {
2138         int rc;
2139
2140         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2141
2142         rc = qeth_issue_next_read(card);
2143         if (rc) {
2144                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2145                 return rc;
2146         }
2147         rc = qeth_cm_enable(card);
2148         if (rc) {
2149                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2150                 goto out_qdio;
2151         }
2152         rc = qeth_cm_setup(card);
2153         if (rc) {
2154                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2155                 goto out_qdio;
2156         }
2157         rc = qeth_ulp_enable(card);
2158         if (rc) {
2159                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2160                 goto out_qdio;
2161         }
2162         rc = qeth_ulp_setup(card);
2163         if (rc) {
2164                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2165                 goto out_qdio;
2166         }
2167         rc = qeth_alloc_qdio_buffers(card);
2168         if (rc) {
2169                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2170                 goto out_qdio;
2171         }
2172         rc = qeth_qdio_establish(card);
2173         if (rc) {
2174                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2175                 qeth_free_qdio_buffers(card);
2176                 goto out_qdio;
2177         }
2178         rc = qeth_qdio_activate(card);
2179         if (rc) {
2180                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2181                 goto out_qdio;
2182         }
2183         rc = qeth_dm_act(card);
2184         if (rc) {
2185                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2186                 goto out_qdio;
2187         }
2188
2189         return 0;
2190 out_qdio:
2191         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2192         return rc;
2193 }
2194
2195 static void qeth_print_status_with_portname(struct qeth_card *card)
2196 {
2197         char dbf_text[15];
2198         int i;
2199
2200         sprintf(dbf_text, "%s", card->info.portname + 1);
2201         for (i = 0; i < 8; i++)
2202                 dbf_text[i] =
2203                         (char) _ebcasc[(__u8) dbf_text[i]];
2204         dbf_text[8] = 0;
2205         dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2206                "with link type %s (portname: %s)\n",
2207                qeth_get_cardname(card),
2208                (card->info.mcl_level[0]) ? " (level: " : "",
2209                (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2210                (card->info.mcl_level[0]) ? ")" : "",
2211                qeth_get_cardname_short(card),
2212                dbf_text);
2213
2214 }
2215
2216 static void qeth_print_status_no_portname(struct qeth_card *card)
2217 {
2218         if (card->info.portname[0])
2219                 dev_info(&card->gdev->dev, "Device is a%s "
2220                        "card%s%s%s\nwith link type %s "
2221                        "(no portname needed by interface).\n",
2222                        qeth_get_cardname(card),
2223                        (card->info.mcl_level[0]) ? " (level: " : "",
2224                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2225                        (card->info.mcl_level[0]) ? ")" : "",
2226                        qeth_get_cardname_short(card));
2227         else
2228                 dev_info(&card->gdev->dev, "Device is a%s "
2229                        "card%s%s%s\nwith link type %s.\n",
2230                        qeth_get_cardname(card),
2231                        (card->info.mcl_level[0]) ? " (level: " : "",
2232                        (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2233                        (card->info.mcl_level[0]) ? ")" : "",
2234                        qeth_get_cardname_short(card));
2235 }
2236
2237 void qeth_print_status_message(struct qeth_card *card)
2238 {
2239         switch (card->info.type) {
2240         case QETH_CARD_TYPE_OSAE:
2241                 /* VM will use a non-zero first character
2242                  * to indicate a HiperSockets like reporting
2243                  * of the level OSA sets the first character to zero
2244                  * */
2245                 if (!card->info.mcl_level[0]) {
2246                         sprintf(card->info.mcl_level, "%02x%02x",
2247                                 card->info.mcl_level[2],
2248                                 card->info.mcl_level[3]);
2249
2250                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2251                         break;
2252                 }
2253                 /* fallthrough */
2254         case QETH_CARD_TYPE_IQD:
2255                 if ((card->info.guestlan) ||
2256                     (card->info.mcl_level[0] & 0x80)) {
2257                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2258                                 card->info.mcl_level[0]];
2259                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2260                                 card->info.mcl_level[1]];
2261                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2262                                 card->info.mcl_level[2]];
2263                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2264                                 card->info.mcl_level[3]];
2265                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2266                 }
2267                 break;
2268         default:
2269                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2270         }
2271         if (card->info.portname_required)
2272                 qeth_print_status_with_portname(card);
2273         else
2274                 qeth_print_status_no_portname(card);
2275 }
2276 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2277
2278 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2279 {
2280         struct qeth_buffer_pool_entry *entry;
2281
2282         QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2283
2284         list_for_each_entry(entry,
2285                             &card->qdio.init_pool.entry_list, init_list) {
2286                 qeth_put_buffer_pool_entry(card, entry);
2287         }
2288 }
2289
2290 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2291                 struct qeth_card *card)
2292 {
2293         struct list_head *plh;
2294         struct qeth_buffer_pool_entry *entry;
2295         int i, free;
2296         struct page *page;
2297
2298         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2299                 return NULL;
2300
2301         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2302                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2303                 free = 1;
2304                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2305                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2306                                 free = 0;
2307                                 break;
2308                         }
2309                 }
2310                 if (free) {
2311                         list_del_init(&entry->list);
2312                         return entry;
2313                 }
2314         }
2315
2316         /* no free buffer in pool so take first one and swap pages */
2317         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2318                         struct qeth_buffer_pool_entry, list);
2319         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2320                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2321                         page = alloc_page(GFP_ATOMIC);
2322                         if (!page) {
2323                                 return NULL;
2324                         } else {
2325                                 free_page((unsigned long)entry->elements[i]);
2326                                 entry->elements[i] = page_address(page);
2327                                 if (card->options.performance_stats)
2328                                         card->perf_stats.sg_alloc_page_rx++;
2329                         }
2330                 }
2331         }
2332         list_del_init(&entry->list);
2333         return entry;
2334 }
2335
2336 static int qeth_init_input_buffer(struct qeth_card *card,
2337                 struct qeth_qdio_buffer *buf)
2338 {
2339         struct qeth_buffer_pool_entry *pool_entry;
2340         int i;
2341
2342         pool_entry = qeth_find_free_buffer_pool_entry(card);
2343         if (!pool_entry)
2344                 return 1;
2345
2346         /*
2347          * since the buffer is accessed only from the input_tasklet
2348          * there shouldn't be a need to synchronize; also, since we use
2349          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2350          * buffers
2351          */
2352
2353         buf->pool_entry = pool_entry;
2354         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2355                 buf->buffer->element[i].length = PAGE_SIZE;
2356                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2357                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2358                         buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2359                 else
2360                         buf->buffer->element[i].flags = 0;
2361         }
2362         return 0;
2363 }
2364
2365 int qeth_init_qdio_queues(struct qeth_card *card)
2366 {
2367         int i, j;
2368         int rc;
2369
2370         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2371
2372         /* inbound queue */
2373         memset(card->qdio.in_q->qdio_bufs, 0,
2374                QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2375         qeth_initialize_working_pool_list(card);
2376         /*give only as many buffers to hardware as we have buffer pool entries*/
2377         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2378                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2379         card->qdio.in_q->next_buf_to_init =
2380                 card->qdio.in_buf_pool.buf_count - 1;
2381         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2382                      card->qdio.in_buf_pool.buf_count - 1);
2383         if (rc) {
2384                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2385                 return rc;
2386         }
2387         /* outbound queue */
2388         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2389                 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2390                        QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2391                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2392                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2393                                         &card->qdio.out_qs[i]->bufs[j]);
2394                 }
2395                 card->qdio.out_qs[i]->card = card;
2396                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2397                 card->qdio.out_qs[i]->do_pack = 0;
2398                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2399                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2400                 atomic_set(&card->qdio.out_qs[i]->state,
2401                            QETH_OUT_Q_UNLOCKED);
2402         }
2403         return 0;
2404 }
2405 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2406
2407 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2408 {
2409         switch (link_type) {
2410         case QETH_LINK_TYPE_HSTR:
2411                 return 2;
2412         default:
2413                 return 1;
2414         }
2415 }
2416
2417 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2418                 struct qeth_ipa_cmd *cmd, __u8 command,
2419                 enum qeth_prot_versions prot)
2420 {
2421         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2422         cmd->hdr.command = command;
2423         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2424         cmd->hdr.seqno = card->seqno.ipa;
2425         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2426         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2427         if (card->options.layer2)
2428                 cmd->hdr.prim_version_no = 2;
2429         else
2430                 cmd->hdr.prim_version_no = 1;
2431         cmd->hdr.param_count = 1;
2432         cmd->hdr.prot_version = prot;
2433         cmd->hdr.ipa_supported = 0;
2434         cmd->hdr.ipa_enabled = 0;
2435 }
2436
2437 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2438                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2439 {
2440         struct qeth_cmd_buffer *iob;
2441         struct qeth_ipa_cmd *cmd;
2442
2443         iob = qeth_wait_for_buffer(&card->write);
2444         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2445         qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2446
2447         return iob;
2448 }
2449 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2450
2451 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2452                 char prot_type)
2453 {
2454         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2455         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2456         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2457                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2458 }
2459 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2460
2461 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2462                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2463                         unsigned long),
2464                 void *reply_param)
2465 {
2466         int rc;
2467         char prot_type;
2468
2469         QETH_DBF_TEXT(TRACE, 4, "sendipa");
2470
2471         if (card->options.layer2)
2472                 if (card->info.type == QETH_CARD_TYPE_OSN)
2473                         prot_type = QETH_PROT_OSN2;
2474                 else
2475                         prot_type = QETH_PROT_LAYER2;
2476         else
2477                 prot_type = QETH_PROT_TCPIP;
2478         qeth_prepare_ipa_cmd(card, iob, prot_type);
2479         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2480                                                 iob, reply_cb, reply_param);
2481         return rc;
2482 }
2483 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2484
2485 static int qeth_send_startstoplan(struct qeth_card *card,
2486                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2487 {
2488         int rc;
2489         struct qeth_cmd_buffer *iob;
2490
2491         iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2492         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2493
2494         return rc;
2495 }
2496
2497 int qeth_send_startlan(struct qeth_card *card)
2498 {
2499         int rc;
2500
2501         QETH_DBF_TEXT(SETUP, 2, "strtlan");
2502
2503         rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2504         return rc;
2505 }
2506 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2507
2508 int qeth_send_stoplan(struct qeth_card *card)
2509 {
2510         int rc = 0;
2511
2512         /*
2513          * TODO: according to the IPA format document page 14,
2514          * TCP/IP (we!) never issue a STOPLAN
2515          * is this right ?!?
2516          */
2517         QETH_DBF_TEXT(SETUP, 2, "stoplan");
2518
2519         rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2520         return rc;
2521 }
2522 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2523
2524 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2525                 struct qeth_reply *reply, unsigned long data)
2526 {
2527         struct qeth_ipa_cmd *cmd;
2528
2529         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2530
2531         cmd = (struct qeth_ipa_cmd *) data;
2532         if (cmd->hdr.return_code == 0)
2533                 cmd->hdr.return_code =
2534                         cmd->data.setadapterparms.hdr.return_code;
2535         return 0;
2536 }
2537 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2538
2539 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2540                 struct qeth_reply *reply, unsigned long data)
2541 {
2542         struct qeth_ipa_cmd *cmd;
2543
2544         QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2545
2546         cmd = (struct qeth_ipa_cmd *) data;
2547         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2548                 card->info.link_type =
2549                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2550         card->options.adp.supported_funcs =
2551                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2552         return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2553 }
2554
2555 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2556                 __u32 command, __u32 cmdlen)
2557 {
2558         struct qeth_cmd_buffer *iob;
2559         struct qeth_ipa_cmd *cmd;
2560
2561         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2562                                      QETH_PROT_IPV4);
2563         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2564         cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2565         cmd->data.setadapterparms.hdr.command_code = command;
2566         cmd->data.setadapterparms.hdr.used_total = 1;
2567         cmd->data.setadapterparms.hdr.seq_no = 1;
2568
2569         return iob;
2570 }
2571 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2572
2573 int qeth_query_setadapterparms(struct qeth_card *card)
2574 {
2575         int rc;
2576         struct qeth_cmd_buffer *iob;
2577
2578         QETH_DBF_TEXT(TRACE, 3, "queryadp");
2579         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2580                                    sizeof(struct qeth_ipacmd_setadpparms));
2581         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2582         return rc;
2583 }
2584 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2585
2586 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2587                 unsigned int qdio_error, const char *dbftext)
2588 {
2589         if (qdio_error) {
2590                 QETH_DBF_TEXT(TRACE, 2, dbftext);
2591                 QETH_DBF_TEXT(QERR, 2, dbftext);
2592                 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2593                                buf->element[15].flags & 0xff);
2594                 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2595                                buf->element[14].flags & 0xff);
2596                 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2597                 if ((buf->element[15].flags & 0xff) == 0x12) {
2598                         card->stats.rx_dropped++;
2599                         return 0;
2600                 } else
2601                         return 1;
2602         }
2603         return 0;
2604 }
2605 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2606
2607 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2608 {
2609         struct qeth_qdio_q *queue = card->qdio.in_q;
2610         int count;
2611         int i;
2612         int rc;
2613         int newcount = 0;
2614
2615         count = (index < queue->next_buf_to_init)?
2616                 card->qdio.in_buf_pool.buf_count -
2617                 (queue->next_buf_to_init - index) :
2618                 card->qdio.in_buf_pool.buf_count -
2619                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2620         /* only requeue at a certain threshold to avoid SIGAs */
2621         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2622                 for (i = queue->next_buf_to_init;
2623                      i < queue->next_buf_to_init + count; ++i) {
2624                         if (qeth_init_input_buffer(card,
2625                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2626                                 break;
2627                         } else {
2628                                 newcount++;
2629                         }
2630                 }
2631
2632                 if (newcount < count) {
2633                         /* we are in memory shortage so we switch back to
2634                            traditional skb allocation and drop packages */
2635                         atomic_set(&card->force_alloc_skb, 3);
2636                         count = newcount;
2637                 } else {
2638                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
2639                 }
2640
2641                 /*
2642                  * according to old code it should be avoided to requeue all
2643                  * 128 buffers in order to benefit from PCI avoidance.
2644                  * this function keeps at least one buffer (the buffer at
2645                  * 'index') un-requeued -> this buffer is the first buffer that
2646                  * will be requeued the next time
2647                  */
2648                 if (card->options.performance_stats) {
2649                         card->perf_stats.inbound_do_qdio_cnt++;
2650                         card->perf_stats.inbound_do_qdio_start_time =
2651                                 qeth_get_micros();
2652                 }
2653                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2654                              queue->next_buf_to_init, count);
2655                 if (card->options.performance_stats)
2656                         card->perf_stats.inbound_do_qdio_time +=
2657                                 qeth_get_micros() -
2658                                 card->perf_stats.inbound_do_qdio_start_time;
2659                 if (rc) {
2660                         dev_warn(&card->gdev->dev,
2661                                 "QDIO reported an error, rc=%i\n", rc);
2662                         QETH_DBF_TEXT(TRACE, 2, "qinberr");
2663                         QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2664                 }
2665                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2666                                           QDIO_MAX_BUFFERS_PER_Q;
2667         }
2668 }
2669 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2670
2671 static int qeth_handle_send_error(struct qeth_card *card,
2672                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2673 {
2674         int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2675
2676         QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2677         if (card->info.type == QETH_CARD_TYPE_IQD) {
2678                 if (sbalf15 == 0) {
2679                         qdio_err = 0;
2680                 } else {
2681                         qdio_err = 1;
2682                 }
2683         }
2684         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2685
2686         if (!qdio_err)
2687                 return QETH_SEND_ERROR_NONE;
2688
2689         if ((sbalf15 >= 15) && (sbalf15 <= 31))
2690                 return QETH_SEND_ERROR_RETRY;
2691
2692         QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2693         QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2694         QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2695                        (u16)qdio_err, (u8)sbalf15);
2696         return QETH_SEND_ERROR_LINK_FAILURE;
2697 }
2698
2699 /*
2700  * Switched to packing state if the number of used buffers on a queue
2701  * reaches a certain limit.
2702  */
2703 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2704 {
2705         if (!queue->do_pack) {
2706                 if (atomic_read(&queue->used_buffers)
2707                     >= QETH_HIGH_WATERMARK_PACK){
2708                         /* switch non-PACKING -> PACKING */
2709                         QETH_DBF_TEXT(TRACE, 6, "np->pack");
2710                         if (queue->card->options.performance_stats)
2711                                 queue->card->perf_stats.sc_dp_p++;
2712                         queue->do_pack = 1;
2713                 }
2714         }
2715 }
2716
2717 /*
2718  * Switches from packing to non-packing mode. If there is a packing
2719  * buffer on the queue this buffer will be prepared to be flushed.
2720  * In that case 1 is returned to inform the caller. If no buffer
2721  * has to be flushed, zero is returned.
2722  */
2723 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2724 {
2725         struct qeth_qdio_out_buffer *buffer;
2726         int flush_count = 0;
2727
2728         if (queue->do_pack) {
2729                 if (atomic_read(&queue->used_buffers)
2730                     <= QETH_LOW_WATERMARK_PACK) {
2731                         /* switch PACKING -> non-PACKING */
2732                         QETH_DBF_TEXT(TRACE, 6, "pack->np");
2733                         if (queue->card->options.performance_stats)
2734                                 queue->card->perf_stats.sc_p_dp++;
2735                         queue->do_pack = 0;
2736                         /* flush packing buffers */
2737                         buffer = &queue->bufs[queue->next_buf_to_fill];
2738                         if ((atomic_read(&buffer->state) ==
2739                                                 QETH_QDIO_BUF_EMPTY) &&
2740                             (buffer->next_element_to_fill > 0)) {
2741                                 atomic_set(&buffer->state,
2742                                                 QETH_QDIO_BUF_PRIMED);
2743                                 flush_count++;
2744                                 queue->next_buf_to_fill =
2745                                         (queue->next_buf_to_fill + 1) %
2746                                         QDIO_MAX_BUFFERS_PER_Q;
2747                         }
2748                 }
2749         }
2750         return flush_count;
2751 }
2752
2753 /*
2754  * Called to flush a packing buffer if no more pci flags are on the queue.
2755  * Checks if there is a packing buffer and prepares it to be flushed.
2756  * In that case returns 1, otherwise zero.
2757  */
2758 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2759 {
2760         struct qeth_qdio_out_buffer *buffer;
2761
2762         buffer = &queue->bufs[queue->next_buf_to_fill];
2763         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2764            (buffer->next_element_to_fill > 0)) {
2765                 /* it's a packing buffer */
2766                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2767                 queue->next_buf_to_fill =
2768                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2769                 return 1;
2770         }
2771         return 0;
2772 }
2773
2774 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2775                                int count)
2776 {
2777         struct qeth_qdio_out_buffer *buf;
2778         int rc;
2779         int i;
2780         unsigned int qdio_flags;
2781
2782         for (i = index; i < index + count; ++i) {
2783                 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2784                 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2785                                 SBAL_FLAGS_LAST_ENTRY;
2786
2787                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2788                         continue;
2789
2790                 if (!queue->do_pack) {
2791                         if ((atomic_read(&queue->used_buffers) >=
2792                                 (QETH_HIGH_WATERMARK_PACK -
2793                                  QETH_WATERMARK_PACK_FUZZ)) &&
2794                             !atomic_read(&queue->set_pci_flags_count)) {
2795                                 /* it's likely that we'll go to packing
2796                                  * mode soon */
2797                                 atomic_inc(&queue->set_pci_flags_count);
2798                                 buf->buffer->element[0].flags |= 0x40;
2799                         }
2800                 } else {
2801                         if (!atomic_read(&queue->set_pci_flags_count)) {
2802                                 /*
2803                                  * there's no outstanding PCI any more, so we
2804                                  * have to request a PCI to be sure the the PCI
2805                                  * will wake at some time in the future then we
2806                                  * can flush packed buffers that might still be
2807                                  * hanging around, which can happen if no
2808                                  * further send was requested by the stack
2809                                  */
2810                                 atomic_inc(&queue->set_pci_flags_count);
2811                                 buf->buffer->element[0].flags |= 0x40;
2812                         }
2813                 }
2814         }
2815
2816         queue->sync_iqdio_error = 0;
2817         queue->card->dev->trans_start = jiffies;
2818         if (queue->card->options.performance_stats) {
2819                 queue->card->perf_stats.outbound_do_qdio_cnt++;
2820                 queue->card->perf_stats.outbound_do_qdio_start_time =
2821                         qeth_get_micros();
2822         }
2823         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2824         if (atomic_read(&queue->set_pci_flags_count))
2825                 qdio_flags |= QDIO_FLAG_PCI_OUT;
2826         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2827                      queue->queue_no, index, count);
2828         if (queue->card->options.performance_stats)
2829                 queue->card->perf_stats.outbound_do_qdio_time +=
2830                         qeth_get_micros() -
2831                         queue->card->perf_stats.outbound_do_qdio_start_time;
2832         if (rc > 0) {
2833                 if (!(rc & QDIO_ERROR_SIGA_BUSY))
2834                         queue->sync_iqdio_error = rc & 3;
2835         }
2836         if (rc) {
2837                 queue->card->stats.tx_errors += count;
2838                 /* ignore temporary SIGA errors without busy condition */
2839                 if (rc == QDIO_ERROR_SIGA_TARGET)
2840                         return;
2841                 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2842                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2843                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2844
2845                 /* this must not happen under normal circumstances. if it
2846                  * happens something is really wrong -> recover */
2847                 qeth_schedule_recovery(queue->card);
2848                 return;
2849         }
2850         atomic_add(count, &queue->used_buffers);
2851         if (queue->card->options.performance_stats)
2852                 queue->card->perf_stats.bufs_sent += count;
2853 }
2854
2855 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2856 {
2857         int index;
2858         int flush_cnt = 0;
2859         int q_was_packing = 0;
2860
2861         /*
2862          * check if weed have to switch to non-packing mode or if
2863          * we have to get a pci flag out on the queue
2864          */
2865         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2866             !atomic_read(&queue->set_pci_flags_count)) {
2867                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2868                                 QETH_OUT_Q_UNLOCKED) {
2869                         /*
2870                          * If we get in here, there was no action in
2871                          * do_send_packet. So, we check if there is a
2872                          * packing buffer to be flushed here.
2873                          */
2874                         netif_stop_queue(queue->card->dev);
2875                         index = queue->next_buf_to_fill;
2876                         q_was_packing = queue->do_pack;
2877                         /* queue->do_pack may change */
2878                         barrier();
2879                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2880                         if (!flush_cnt &&
2881                             !atomic_read(&queue->set_pci_flags_count))
2882                                 flush_cnt +=
2883                                         qeth_flush_buffers_on_no_pci(queue);
2884                         if (queue->card->options.performance_stats &&
2885                             q_was_packing)
2886                                 queue->card->perf_stats.bufs_sent_pack +=
2887                                         flush_cnt;
2888                         if (flush_cnt)
2889                                 qeth_flush_buffers(queue, index, flush_cnt);
2890                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2891                 }
2892         }
2893 }
2894
2895 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2896                 unsigned int qdio_error, int __queue, int first_element,
2897                 int count, unsigned long card_ptr)
2898 {
2899         struct qeth_card *card        = (struct qeth_card *) card_ptr;
2900         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2901         struct qeth_qdio_out_buffer *buffer;
2902         int i;
2903         unsigned qeth_send_err;
2904
2905         QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2906         if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2907                 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2908                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2909                 netif_stop_queue(card->dev);
2910                 qeth_schedule_recovery(card);
2911                 return;
2912         }
2913         if (card->options.performance_stats) {
2914                 card->perf_stats.outbound_handler_cnt++;
2915                 card->perf_stats.outbound_handler_start_time =
2916                         qeth_get_micros();
2917         }
2918         for (i = first_element; i < (first_element + count); ++i) {
2919                 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2920                 qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
2921                 __qeth_clear_output_buffer(queue, buffer,
2922                         (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
2923         }
2924         atomic_sub(count, &queue->used_buffers);
2925         /* check if we need to do something on this outbound queue */
2926         if (card->info.type != QETH_CARD_TYPE_IQD)
2927                 qeth_check_outbound_queue(queue);
2928
2929         netif_wake_queue(queue->card->dev);
2930         if (card->options.performance_stats)
2931                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2932                         card->perf_stats.outbound_handler_start_time;
2933 }
2934 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2935
2936 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2937                         int ipv, int cast_type)
2938 {
2939         if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
2940                 return card->qdio.default_out_queue;
2941         switch (card->qdio.no_out_queues) {
2942         case 4:
2943                 if (cast_type && card->info.is_multicast_different)
2944                         return card->info.is_multicast_different &
2945                                 (card->qdio.no_out_queues - 1);
2946                 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2947                         const u8 tos = ip_hdr(skb)->tos;
2948
2949                         if (card->qdio.do_prio_queueing ==
2950                                 QETH_PRIO_Q_ING_TOS) {
2951                                 if (tos & IP_TOS_NOTIMPORTANT)
2952                                         return 3;
2953                                 if (tos & IP_TOS_HIGHRELIABILITY)
2954                                         return 2;
2955                                 if (tos & IP_TOS_HIGHTHROUGHPUT)
2956                                         return 1;
2957                                 if (tos & IP_TOS_LOWDELAY)
2958                                         return 0;
2959                         }
2960                         if (card->qdio.do_prio_queueing ==
2961                                 QETH_PRIO_Q_ING_PREC)
2962                                 return 3 - (tos >> 6);
2963                 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
2964                         /* TODO: IPv6!!! */
2965                 }
2966                 return card->qdio.default_out_queue;
2967         case 1: /* fallthrough for single-out-queue 1920-device */
2968         default:
2969                 return card->qdio.default_out_queue;
2970         }
2971 }
2972 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
2973
2974 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
2975                      struct sk_buff *skb, int elems)
2976 {
2977         int elements_needed = 0;
2978
2979         if (skb_shinfo(skb)->nr_frags > 0)
2980                 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
2981         if (elements_needed == 0)
2982                 elements_needed = 1 + (((((unsigned long) skb->data) %
2983                                 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
2984         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2985                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
2986                         "(Number=%d / Length=%d). Discarded.\n",
2987                         (elements_needed+elems), skb->len);
2988                 return 0;
2989         }
2990         return elements_needed;
2991 }
2992 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
2993
2994 static inline void __qeth_fill_buffer(struct sk_buff *skb,
2995         struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
2996         int offset)
2997 {
2998         int length = skb->len;
2999         int length_here;
3000         int element;
3001         char *data;
3002         int first_lap ;
3003
3004         element = *next_element_to_fill;
3005         data = skb->data;
3006         first_lap = (is_tso == 0 ? 1 : 0);
3007
3008         if (offset >= 0) {
3009                 data = skb->data + offset;
3010                 length -= offset;
3011                 first_lap = 0;
3012         }
3013
3014         while (length > 0) {
3015                 /* length_here is the remaining amount of data in this page */
3016                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3017                 if (length < length_here)
3018                         length_here = length;
3019
3020                 buffer->element[element].addr = data;
3021                 buffer->element[element].length = length_here;
3022                 length -= length_here;
3023                 if (!length) {
3024                         if (first_lap)
3025                                 buffer->element[element].flags = 0;
3026                         else
3027                                 buffer->element[element].flags =
3028                                     SBAL_FLAGS_LAST_FRAG;
3029                 } else {
3030                         if (first_lap)
3031                                 buffer->element[element].flags =
3032                                     SBAL_FLAGS_FIRST_FRAG;
3033                         else
3034                                 buffer->element[element].flags =
3035                                     SBAL_FLAGS_MIDDLE_FRAG;
3036                 }
3037                 data += length_here;
3038                 element++;
3039                 first_lap = 0;
3040         }
3041         *next_element_to_fill = element;
3042 }
3043
3044 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3045                 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3046                 struct qeth_hdr *hdr, int offset, int hd_len)
3047 {
3048         struct qdio_buffer *buffer;
3049         int flush_cnt = 0, hdr_len, large_send = 0;
3050
3051         buffer = buf->buffer;
3052         atomic_inc(&skb->users);
3053         skb_queue_tail(&buf->skb_list, skb);
3054
3055         /*check first on TSO ....*/
3056         if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3057                 int element = buf->next_element_to_fill;
3058
3059                 hdr_len = sizeof(struct qeth_hdr_tso) +
3060                         ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3061                 /*fill first buffer entry only with header information */
3062                 buffer->element[element].addr = skb->data;
3063                 buffer->element[element].length = hdr_len;
3064                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3065                 buf->next_element_to_fill++;
3066                 skb->data += hdr_len;
3067                 skb->len  -= hdr_len;
3068                 large_send = 1;
3069         }
3070
3071         if (offset >= 0) {
3072                 int element = buf->next_element_to_fill;
3073                 buffer->element[element].addr = hdr;
3074                 buffer->element[element].length = sizeof(struct qeth_hdr) +
3075                                                         hd_len;
3076                 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3077                 buf->is_header[element] = 1;
3078                 buf->next_element_to_fill++;
3079         }
3080
3081         if (skb_shinfo(skb)->nr_frags == 0)
3082                 __qeth_fill_buffer(skb, buffer, large_send,
3083                                 (int *)&buf->next_element_to_fill, offset);
3084         else
3085                 __qeth_fill_buffer_frag(skb, buffer, large_send,
3086                                         (int *)&buf->next_element_to_fill);
3087
3088         if (!queue->do_pack) {
3089                 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3090                 /* set state to PRIMED -> will be flushed */
3091                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3092                 flush_cnt = 1;
3093         } else {
3094                 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3095                 if (queue->card->options.performance_stats)
3096                         queue->card->perf_stats.skbs_sent_pack++;
3097                 if (buf->next_element_to_fill >=
3098                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3099                         /*
3100                          * packed buffer if full -> set state PRIMED
3101                          * -> will be flushed
3102                          */
3103                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3104                         flush_cnt = 1;
3105                 }
3106         }
3107         return flush_cnt;
3108 }
3109
3110 int qeth_do_send_packet_fast(struct qeth_card *card,
3111                 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3112                 struct qeth_hdr *hdr, int elements_needed,
3113                 int offset, int hd_len)
3114 {
3115         struct qeth_qdio_out_buffer *buffer;
3116         struct sk_buff *skb1;
3117         struct qeth_skb_data *retry_ctrl;
3118         int index;
3119         int rc;
3120
3121         /* spin until we get the queue ... */
3122         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3123                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3124         /* ... now we've got the queue */
3125         index = queue->next_buf_to_fill;
3126         buffer = &queue->bufs[queue->next_buf_to_fill];
3127         /*
3128          * check if buffer is empty to make sure that we do not 'overtake'
3129          * ourselves and try to fill a buffer that is already primed
3130          */
3131         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3132                 goto out;
3133         queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3134                                           QDIO_MAX_BUFFERS_PER_Q;
3135         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3136         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3137         qeth_flush_buffers(queue, index, 1);
3138         if (queue->sync_iqdio_error == 2) {
3139                 skb1 = skb_dequeue(&buffer->skb_list);
3140                 while (skb1) {
3141                         atomic_dec(&skb1->users);
3142                         skb1 = skb_dequeue(&buffer->skb_list);
3143                 }
3144                 retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
3145                 if (retry_ctrl->magic != QETH_SKB_MAGIC) {
3146                         retry_ctrl->magic = QETH_SKB_MAGIC;
3147                         retry_ctrl->count = 0;
3148                 }
3149                 if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
3150                         retry_ctrl->count++;
3151                         rc = dev_queue_xmit(skb);
3152                 } else {
3153                         dev_kfree_skb_any(skb);
3154                         QETH_DBF_TEXT(QERR, 2, "qrdrop");
3155                 }
3156         }
3157         return 0;
3158 out:
3159         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3160         return -EBUSY;
3161 }
3162 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3163
3164 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3165                 struct sk_buff *skb, struct qeth_hdr *hdr,
3166                 int elements_needed)
3167 {
3168         struct qeth_qdio_out_buffer *buffer;
3169         int start_index;
3170         int flush_count = 0;
3171         int do_pack = 0;
3172         int tmp;
3173         int rc = 0;
3174
3175         /* spin until we get the queue ... */
3176         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3177                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3178         start_index = queue->next_buf_to_fill;
3179         buffer = &queue->bufs[queue->next_buf_to_fill];
3180         /*
3181          * check if buffer is empty to make sure that we do not 'overtake'
3182          * ourselves and try to fill a buffer that is already primed
3183          */
3184         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3185                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3186                 return -EBUSY;
3187         }
3188         /* check if we need to switch packing state of this queue */
3189         qeth_switch_to_packing_if_needed(queue);
3190         if (queue->do_pack) {
3191                 do_pack = 1;
3192                 /* does packet fit in current buffer? */
3193                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3194                     buffer->next_element_to_fill) < elements_needed) {
3195                         /* ... no -> set state PRIMED */
3196                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3197                         flush_count++;
3198                         queue->next_buf_to_fill =
3199                                 (queue->next_buf_to_fill + 1) %
3200                                 QDIO_MAX_BUFFERS_PER_Q;
3201                         buffer = &queue->bufs[queue->next_buf_to_fill];
3202                         /* we did a step forward, so check buffer state
3203                          * again */
3204                         if (atomic_read(&buffer->state) !=
3205                             QETH_QDIO_BUF_EMPTY) {
3206                                 qeth_flush_buffers(queue, start_index,
3207                                                            flush_count);
3208                                 atomic_set(&queue->state,
3209                                                 QETH_OUT_Q_UNLOCKED);
3210                                 return -EBUSY;
3211                         }
3212                 }
3213         }
3214         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3215         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3216                                   QDIO_MAX_BUFFERS_PER_Q;
3217         flush_count += tmp;
3218         if (flush_count)
3219                 qeth_flush_buffers(queue, start_index, flush_count);
3220         else if (!atomic_read(&queue->set_pci_flags_count))
3221                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3222         /*
3223          * queue->state will go from LOCKED -> UNLOCKED or from
3224          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3225          * (switch packing state or flush buffer to get another pci flag out).
3226          * In that case we will enter this loop
3227          */
3228         while (atomic_dec_return(&queue->state)) {
3229                 flush_count = 0;
3230                 start_index = queue->next_buf_to_fill;
3231                 /* check if we can go back to non-packing state */
3232                 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3233                 /*
3234                  * check if we need to flush a packing buffer to get a pci
3235                  * flag out on the queue
3236                  */
3237                 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3238                         flush_count += qeth_flush_buffers_on_no_pci(queue);
3239                 if (flush_count)
3240                         qeth_flush_buffers(queue, start_index, flush_count);
3241         }
3242         /* at this point the queue is UNLOCKED again */
3243         if (queue->card->options.performance_stats && do_pack)
3244                 queue->card->perf_stats.bufs_sent_pack += flush_count;
3245
3246         return rc;
3247 }
3248 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3249
3250 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3251                 struct qeth_reply *reply, unsigned long data)
3252 {
3253         struct qeth_ipa_cmd *cmd;
3254         struct qeth_ipacmd_setadpparms *setparms;
3255
3256         QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3257
3258         cmd = (struct qeth_ipa_cmd *) data;
3259         setparms = &(cmd->data.setadapterparms);
3260
3261         qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3262         if (cmd->hdr.return_code) {
3263                 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3264                 setparms->data.mode = SET_PROMISC_MODE_OFF;
3265         }
3266         card->info.promisc_mode = setparms->data.mode;
3267         return 0;
3268 }
3269
3270 void qeth_setadp_promisc_mode(struct qeth_card *card)
3271 {
3272         enum qeth_ipa_promisc_modes mode;
3273         struct net_device *dev = card->dev;
3274         struct qeth_cmd_buffer *iob;
3275         struct qeth_ipa_cmd *cmd;
3276
3277         QETH_DBF_TEXT(TRACE, 4, "setprom");
3278
3279         if (((dev->flags & IFF_PROMISC) &&
3280              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3281             (!(dev->flags & IFF_PROMISC) &&
3282              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3283                 return;
3284         mode = SET_PROMISC_MODE_OFF;
3285         if (dev->flags & IFF_PROMISC)
3286                 mode = SET_PROMISC_MODE_ON;
3287         QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3288
3289         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3290                         sizeof(struct qeth_ipacmd_setadpparms));
3291         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3292         cmd->data.setadapterparms.data.mode = mode;
3293         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3294 }
3295 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3296
3297 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3298 {
3299         struct qeth_card *card;
3300         char dbf_text[15];
3301
3302         card = dev->ml_priv;
3303
3304         QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3305         sprintf(dbf_text, "%8x", new_mtu);
3306         QETH_DBF_TEXT(TRACE, 4, dbf_text);
3307
3308         if (new_mtu < 64)
3309                 return -EINVAL;
3310         if (new_mtu > 65535)
3311                 return -EINVAL;
3312         if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3313             (!qeth_mtu_is_valid(card, new_mtu)))
3314                 return -EINVAL;
3315         dev->mtu = new_mtu;
3316         return 0;
3317 }
3318 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3319
3320 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3321 {
3322         struct qeth_card *card;
3323
3324         card = dev->ml_priv;
3325
3326         QETH_DBF_TEXT(TRACE, 5, "getstat");
3327
3328         return &card->stats;
3329 }
3330 EXPORT_SYMBOL_GPL(qeth_get_stats);
3331
3332 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3333                 struct qeth_reply *reply, unsigned long data)
3334 {
3335         struct qeth_ipa_cmd *cmd;
3336
3337         QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3338
3339         cmd = (struct qeth_ipa_cmd *) data;
3340         if (!card->options.layer2 ||
3341             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3342                 memcpy(card->dev->dev_addr,
3343                        &cmd->data.setadapterparms.data.change_addr.addr,
3344                        OSA_ADDR_LEN);
3345                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3346         }
3347         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3348         return 0;
3349 }
3350
3351 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3352 {
3353         int rc;
3354         struct qeth_cmd_buffer *iob;
3355         struct qeth_ipa_cmd *cmd;
3356
3357         QETH_DBF_TEXT(TRACE, 4, "chgmac");
3358
3359         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3360                                    sizeof(struct qeth_ipacmd_setadpparms));
3361         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3362         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3363         cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3364         memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3365                card->dev->dev_addr, OSA_ADDR_LEN);
3366         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3367                                NULL);
3368         return rc;
3369 }
3370 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3371
3372 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3373                 struct qeth_reply *reply, unsigned long data)
3374 {
3375         struct qeth_ipa_cmd *cmd;
3376         struct qeth_set_access_ctrl *access_ctrl_req;
3377         int rc;
3378
3379         QETH_DBF_TEXT(TRACE, 4, "setaccb");
3380
3381         cmd = (struct qeth_ipa_cmd *) data;
3382         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3383         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3384         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3385         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3386                 cmd->data.setadapterparms.hdr.return_code);
3387         switch (cmd->data.setadapterparms.hdr.return_code) {
3388         case SET_ACCESS_CTRL_RC_SUCCESS:
3389         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3390         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3391         {
3392                 card->options.isolation = access_ctrl_req->subcmd_code;
3393                 if (card->options.isolation == ISOLATION_MODE_NONE) {
3394                         dev_info(&card->gdev->dev,
3395                             "QDIO data connection isolation is deactivated\n");
3396                 } else {
3397                         dev_info(&card->gdev->dev,
3398                             "QDIO data connection isolation is activated\n");
3399                 }
3400                 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3401                         card->gdev->dev.kobj.name,
3402                         access_ctrl_req->subcmd_code,
3403                         cmd->data.setadapterparms.hdr.return_code);
3404                 rc = 0;
3405                 break;
3406         }
3407         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3408         {
3409                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3410                         card->gdev->dev.kobj.name,
3411                         access_ctrl_req->subcmd_code,
3412                         cmd->data.setadapterparms.hdr.return_code);
3413                 dev_err(&card->gdev->dev, "Adapter does not "
3414                         "support QDIO data connection isolation\n");
3415
3416                 /* ensure isolation mode is "none" */
3417                 card->options.isolation = ISOLATION_MODE_NONE;
3418                 rc = -EOPNOTSUPP;
3419                 break;
3420         }
3421         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3422         {
3423                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3424                         card->gdev->dev.kobj.name,
3425                         access_ctrl_req->subcmd_code,
3426                         cmd->data.setadapterparms.hdr.return_code);
3427                 dev_err(&card->gdev->dev,
3428                         "Adapter is dedicated. "
3429                         "QDIO data connection isolation not supported\n");
3430
3431                 /* ensure isolation mode is "none" */
3432                 card->options.isolation = ISOLATION_MODE_NONE;
3433                 rc = -EOPNOTSUPP;
3434                 break;
3435         }
3436         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3437         {
3438                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3439                         card->gdev->dev.kobj.name,
3440                         access_ctrl_req->subcmd_code,
3441                         cmd->data.setadapterparms.hdr.return_code);
3442                 dev_err(&card->gdev->dev,
3443                         "TSO does not permit QDIO data connection isolation\n");
3444
3445                 /* ensure isolation mode is "none" */
3446                 card->options.isolation = ISOLATION_MODE_NONE;
3447                 rc = -EPERM;
3448                 break;
3449         }
3450         default:
3451         {
3452                 /* this should never happen */
3453                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3454                         "==UNKNOWN\n",
3455                         card->gdev->dev.kobj.name,
3456                         access_ctrl_req->subcmd_code,
3457                         cmd->data.setadapterparms.hdr.return_code);
3458
3459                 /* ensure isolation mode is "none" */
3460                 card->options.isolation = ISOLATION_MODE_NONE;
3461                 rc = 0;
3462                 break;
3463         }
3464         }
3465         qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3466         return rc;
3467 }
3468
3469 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3470                 enum qeth_ipa_isolation_modes isolation)
3471 {
3472         int rc;
3473         struct qeth_cmd_buffer *iob;
3474         struct qeth_ipa_cmd *cmd;
3475         struct qeth_set_access_ctrl *access_ctrl_req;
3476
3477         QETH_DBF_TEXT(TRACE, 4, "setacctl");
3478
3479         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3480         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3481
3482         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3483                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3484                                    sizeof(struct qeth_set_access_ctrl));
3485         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3486         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3487         access_ctrl_req->subcmd_code = isolation;
3488
3489         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3490                                NULL);
3491         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3492         return rc;
3493 }
3494
3495 int qeth_set_access_ctrl_online(struct qeth_card *card)
3496 {
3497         int rc = 0;
3498
3499         QETH_DBF_TEXT(TRACE, 4, "setactlo");
3500
3501         if (card->info.type == QETH_CARD_TYPE_OSAE &&
3502             qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3503                 rc = qeth_setadpparms_set_access_ctrl(card,
3504                         card->options.isolation);
3505                 if (rc) {
3506                         QETH_DBF_MESSAGE(3,
3507                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed",
3508                                 card->gdev->dev.kobj.name,
3509                                 rc);
3510                 }
3511         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3512                 card->options.isolation = ISOLATION_MODE_NONE;
3513
3514                 dev_err(&card->gdev->dev, "Adapter does not "
3515                         "support QDIO data connection isolation\n");
3516                 rc = -EOPNOTSUPP;
3517         }
3518         return rc;
3519 }
3520 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3521
3522 void qeth_tx_timeout(struct net_device *dev)
3523 {
3524         struct qeth_card *card;
3525
3526         QETH_DBF_TEXT(TRACE, 4, "txtimeo");
3527         card = dev->ml_priv;
3528         card->stats.tx_errors++;
3529         qeth_schedule_recovery(card);
3530 }
3531 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3532
3533 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3534 {
3535         struct qeth_card *card = dev->ml_priv;
3536         int rc = 0;
3537
3538         switch (regnum) {
3539         case MII_BMCR: /* Basic mode control register */
3540                 rc = BMCR_FULLDPLX;
3541                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3542                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3543                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3544                         rc |= BMCR_SPEED100;
3545                 break;
3546         case MII_BMSR: /* Basic mode status register */
3547                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3548                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3549                      BMSR_100BASE4;
3550                 break;
3551         case MII_PHYSID1: /* PHYS ID 1 */
3552                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3553                      dev->dev_addr[2];
3554                 rc = (rc >> 5) & 0xFFFF;
3555                 break;
3556         case MII_PHYSID2: /* PHYS ID 2 */
3557                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3558                 break;
3559         case MII_ADVERTISE: /* Advertisement control reg */
3560                 rc = ADVERTISE_ALL;
3561                 break;
3562         case MII_LPA: /* Link partner ability reg */
3563                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3564                      LPA_100BASE4 | LPA_LPACK;
3565                 break;
3566         case MII_EXPANSION: /* Expansion register */
3567                 break;
3568         case MII_DCOUNTER: /* disconnect counter */
3569                 break;
3570         case MII_FCSCOUNTER: /* false carrier counter */
3571                 break;
3572         case MII_NWAYTEST: /* N-way auto-neg test register */
3573                 break;
3574         case MII_RERRCOUNTER: /* rx error counter */
3575                 rc = card->stats.rx_errors;
3576                 break;
3577         case MII_SREVISION: /* silicon revision */
3578                 break;
3579         case MII_RESV1: /* reserved 1 */
3580                 break;
3581         case MII_LBRERROR: /* loopback, rx, bypass error */
3582                 break;
3583         case MII_PHYADDR: /* physical address */
3584                 break;
3585         case MII_RESV2: /* reserved 2 */
3586                 break;
3587         case MII_TPISTATUS: /* TPI status for 10mbps */
3588                 break;
3589         case MII_NCONFIG: /* network interface config */
3590                 break;
3591         default:
3592                 break;
3593         }
3594         return rc;
3595 }
3596 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3597
3598 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3599                 struct qeth_cmd_buffer *iob, int len,
3600                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3601                         unsigned long),
3602                 void *reply_param)
3603 {
3604         u16 s1, s2;
3605
3606         QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3607
3608         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3609         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3610                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3611         /* adjust PDU length fields in IPA_PDU_HEADER */
3612         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3613         s2 = (u32) len;
3614         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3615         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3616         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3617         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3618         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3619                                       reply_cb, reply_param);
3620 }
3621
3622 static int qeth_snmp_command_cb(struct qeth_card *card,
3623                 struct qeth_reply *reply, unsigned long sdata)
3624 {
3625         struct qeth_ipa_cmd *cmd;
3626         struct qeth_arp_query_info *qinfo;
3627         struct qeth_snmp_cmd *snmp;
3628         unsigned char *data;
3629         __u16 data_len;
3630
3631         QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3632
3633         cmd = (struct qeth_ipa_cmd *) sdata;
3634         data = (unsigned char *)((char *)cmd - reply->offset);
3635         qinfo = (struct qeth_arp_query_info *) reply->param;
3636         snmp = &cmd->data.setadapterparms.data.snmp;
3637
3638         if (cmd->hdr.return_code) {
3639                 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3640                 return 0;
3641         }
3642         if (cmd->data.setadapterparms.hdr.return_code) {
3643                 cmd->hdr.return_code =
3644                         cmd->data.setadapterparms.hdr.return_code;
3645                 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3646                 return 0;
3647         }
3648         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3649         if (cmd->data.setadapterparms.hdr.seq_no == 1)
3650                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3651         else
3652                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3653
3654         /* check if there is enough room in userspace */
3655         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3656                 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3657                 cmd->hdr.return_code = -ENOMEM;
3658                 return 0;
3659         }
3660         QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3661                        cmd->data.setadapterparms.hdr.used_total);
3662         QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3663                 cmd->data.setadapterparms.hdr.seq_no);
3664         /*copy entries to user buffer*/
3665         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3666                 memcpy(qinfo->udata + qinfo->udata_offset,
3667                        (char *)snmp,
3668                        data_len + offsetof(struct qeth_snmp_cmd, data));
3669                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3670         } else {
3671                 memcpy(qinfo->udata + qinfo->udata_offset,
3672                        (char *)&snmp->request, data_len);
3673         }
3674         qinfo->udata_offset += data_len;
3675         /* check if all replies received ... */
3676                 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3677                                cmd->data.setadapterparms.hdr.used_total);
3678                 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3679                                cmd->data.setadapterparms.hdr.seq_no);
3680         if (cmd->data.setadapterparms.hdr.seq_no <
3681             cmd->data.setadapterparms.hdr.used_total)
3682                 return 1;
3683         return 0;
3684 }
3685
3686 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3687 {
3688         struct qeth_cmd_buffer *iob;
3689         struct qeth_ipa_cmd *cmd;
3690         struct qeth_snmp_ureq *ureq;
3691         int req_len;
3692         struct qeth_arp_query_info qinfo = {0, };
3693         int rc = 0;
3694
3695         QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3696
3697         if (card->info.guestlan)
3698                 return -EOPNOTSUPP;
3699
3700         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3701             (!card->options.layer2)) {
3702                 return -EOPNOTSUPP;
3703         }
3704         /* skip 4 bytes (data_len struct member) to get req_len */
3705         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3706                 return -EFAULT;
3707         ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3708         if (!ureq) {
3709                 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3710                 return -ENOMEM;
3711         }
3712         if (copy_from_user(ureq, udata,
3713                         req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3714                 kfree(ureq);
3715                 return -EFAULT;
3716         }
3717         qinfo.udata_len = ureq->hdr.data_len;
3718         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3719         if (!qinfo.udata) {
3720                 kfree(ureq);
3721                 return -ENOMEM;
3722         }
3723         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3724
3725         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3726                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
3727         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3728         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3729         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3730                                     qeth_snmp_command_cb, (void *)&qinfo);
3731         if (rc)
3732                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3733                            QETH_CARD_IFNAME(card), rc);
3734         else {
3735                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3736                         rc = -EFAULT;
3737         }
3738
3739         kfree(ureq);
3740         kfree(qinfo.udata);
3741         return rc;
3742 }
3743 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3744
3745 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3746 {
3747         switch (card->info.type) {
3748         case QETH_CARD_TYPE_IQD:
3749                 return 2;
3750         default:
3751                 return 0;
3752         }
3753 }
3754
3755 static int qeth_qdio_establish(struct qeth_card *card)
3756 {
3757         struct qdio_initialize init_data;
3758         char *qib_param_field;
3759         struct qdio_buffer **in_sbal_ptrs;
3760         struct qdio_buffer **out_sbal_ptrs;
3761         int i, j, k;
3762         int rc = 0;
3763
3764         QETH_DBF_TEXT(SETUP, 2, "qdioest");
3765
3766         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3767                               GFP_KERNEL);
3768         if (!qib_param_field)
3769                 return -ENOMEM;
3770
3771         qeth_create_qib_param_field(card, qib_param_field);
3772         qeth_create_qib_param_field_blkt(card, qib_param_field);
3773
3774         in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3775                                GFP_KERNEL);
3776         if (!in_sbal_ptrs) {
3777                 kfree(qib_param_field);
3778                 return -ENOMEM;
3779         }
3780         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3781                 in_sbal_ptrs[i] = (struct qdio_buffer *)
3782                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3783
3784         out_sbal_ptrs =
3785                 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3786                         sizeof(void *), GFP_KERNEL);
3787         if (!out_sbal_ptrs) {
3788                 kfree(in_sbal_ptrs);
3789                 kfree(qib_param_field);
3790                 return -ENOMEM;
3791         }
3792         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3793                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3794                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3795                                 card->qdio.out_qs[i]->bufs[j].buffer);
3796                 }
3797
3798         memset(&init_data, 0, sizeof(struct qdio_initialize));
3799         init_data.cdev                   = CARD_DDEV(card);
3800         init_data.q_format               = qeth_get_qdio_q_format(card);
3801         init_data.qib_param_field_format = 0;
3802         init_data.qib_param_field        = qib_param_field;
3803         init_data.no_input_qs            = 1;
3804         init_data.no_output_qs           = card->qdio.no_out_queues;
3805         init_data.input_handler          = card->discipline.input_handler;
3806         init_data.output_handler         = card->discipline.output_handler;
3807         init_data.int_parm               = (unsigned long) card;
3808         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
3809         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3810
3811         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3812                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3813                 rc = qdio_initialize(&init_data);
3814                 if (rc)
3815                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3816         }
3817         kfree(out_sbal_ptrs);
3818         kfree(in_sbal_ptrs);
3819         kfree(qib_param_field);
3820         return rc;
3821 }
3822
3823 static void qeth_core_free_card(struct qeth_card *card)
3824 {
3825
3826         QETH_DBF_TEXT(SETUP, 2, "freecrd");
3827         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3828         qeth_clean_channel(&card->read);
3829         qeth_clean_channel(&card->write);
3830         if (card->dev)
3831                 free_netdev(card->dev);
3832         kfree(card->ip_tbd_list);
3833         qeth_free_qdio_buffers(card);
3834         unregister_service_level(&card->qeth_service_level);
3835         kfree(card);
3836 }
3837
3838 static struct ccw_device_id qeth_ids[] = {
3839         {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3840         {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3841         {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3842         {},
3843 };
3844 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3845
3846 static struct ccw_driver qeth_ccw_driver = {
3847         .name = "qeth",
3848         .ids = qeth_ids,
3849         .probe = ccwgroup_probe_ccwdev,
3850         .remove = ccwgroup_remove_ccwdev,
3851 };
3852
3853 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3854                                 unsigned long driver_id)
3855 {
3856         return ccwgroup_create_from_string(root_dev, driver_id,
3857                                            &qeth_ccw_driver, 3, buf);
3858 }
3859
3860 int qeth_core_hardsetup_card(struct qeth_card *card)
3861 {
3862         int retries = 0;
3863         int rc;
3864
3865         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3866         atomic_set(&card->force_alloc_skb, 0);
3867 retry:
3868         if (retries)
3869                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3870                         dev_name(&card->gdev->dev));
3871         ccw_device_set_offline(CARD_DDEV(card));
3872         ccw_device_set_offline(CARD_WDEV(card));
3873         ccw_device_set_offline(CARD_RDEV(card));
3874         rc = ccw_device_set_online(CARD_RDEV(card));
3875         if (rc)
3876                 goto retriable;
3877         rc = ccw_device_set_online(CARD_WDEV(card));
3878         if (rc)
3879                 goto retriable;
3880         rc = ccw_device_set_online(CARD_DDEV(card));
3881         if (rc)
3882                 goto retriable;
3883         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3884 retriable:
3885         if (rc == -ERESTARTSYS) {
3886                 QETH_DBF_TEXT(SETUP, 2, "break1");
3887                 return rc;
3888         } else if (rc) {
3889                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3890                 if (++retries > 3)
3891                         goto out;
3892                 else
3893                         goto retry;
3894         }
3895         qeth_init_tokens(card);
3896         qeth_init_func_level(card);
3897         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3898         if (rc == -ERESTARTSYS) {
3899                 QETH_DBF_TEXT(SETUP, 2, "break2");
3900                 return rc;
3901         } else if (rc) {
3902                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3903                 if (--retries < 0)
3904                         goto out;
3905                 else
3906                         goto retry;
3907         }
3908         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3909         if (rc == -ERESTARTSYS) {
3910                 QETH_DBF_TEXT(SETUP, 2, "break3");
3911                 return rc;
3912         } else if (rc) {
3913                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3914                 if (--retries < 0)
3915                         goto out;
3916                 else
3917                         goto retry;
3918         }
3919         rc = qeth_mpc_initialize(card);
3920         if (rc) {
3921                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3922                 goto out;
3923         }
3924         return 0;
3925 out:
3926         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3927                 "an error on the device\n");
3928         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3929                 dev_name(&card->gdev->dev), rc);
3930         return rc;
3931 }
3932 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3933
3934 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3935                 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3936 {
3937         struct page *page = virt_to_page(element->addr);
3938         if (*pskb == NULL) {
3939                 /* the upper protocol layers assume that there is data in the
3940                  * skb itself. Copy a small amount (64 bytes) to make them
3941                  * happy. */
3942                 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3943                 if (!(*pskb))
3944                         return -ENOMEM;
3945                 skb_reserve(*pskb, ETH_HLEN);
3946                 if (data_len <= 64) {
3947                         memcpy(skb_put(*pskb, data_len), element->addr + offset,
3948                                 data_len);
3949                 } else {
3950                         get_page(page);
3951                         memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3952                         skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3953                                 data_len - 64);
3954                         (*pskb)->data_len += data_len - 64;
3955                         (*pskb)->len      += data_len - 64;
3956                         (*pskb)->truesize += data_len - 64;
3957                         (*pfrag)++;
3958                 }
3959         } else {
3960                 get_page(page);
3961                 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3962                 (*pskb)->data_len += data_len;
3963                 (*pskb)->len      += data_len;
3964                 (*pskb)->truesize += data_len;
3965                 (*pfrag)++;
3966         }
3967         return 0;
3968 }
3969
3970 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3971                 struct qdio_buffer *buffer,
3972                 struct qdio_buffer_element **__element, int *__offset,
3973                 struct qeth_hdr **hdr)
3974 {
3975         struct qdio_buffer_element *element = *__element;
3976         int offset = *__offset;
3977         struct sk_buff *skb = NULL;
3978         int skb_len = 0;
3979         void *data_ptr;
3980         int data_len;
3981         int headroom = 0;
3982         int use_rx_sg = 0;
3983         int frag = 0;
3984
3985         /* qeth_hdr must not cross element boundaries */
3986         if (element->length < offset + sizeof(struct qeth_hdr)) {
3987                 if (qeth_is_last_sbale(element))
3988                         return NULL;
3989                 element++;
3990                 offset = 0;
3991                 if (element->length < sizeof(struct qeth_hdr))
3992                         return NULL;
3993         }
3994         *hdr = element->addr + offset;
3995
3996         offset += sizeof(struct qeth_hdr);
3997         switch ((*hdr)->hdr.l2.id) {
3998         case QETH_HEADER_TYPE_LAYER2:
3999                 skb_len = (*hdr)->hdr.l2.pkt_length;
4000                 break;
4001         case QETH_HEADER_TYPE_LAYER3:
4002                 skb_len = (*hdr)->hdr.l3.length;
4003                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4004                     (card->info.link_type == QETH_LINK_TYPE_HSTR))
4005                         headroom = TR_HLEN;
4006                 else
4007                         headroom = ETH_HLEN;
4008                 break;
4009         case QETH_HEADER_TYPE_OSN:
4010                 skb_len = (*hdr)->hdr.osn.pdu_length;
4011                 headroom = sizeof(struct qeth_hdr);
4012                 break;
4013         default:
4014                 break;
4015         }
4016
4017         if (!skb_len)
4018                 return NULL;
4019
4020         if ((skb_len >= card->options.rx_sg_cb) &&
4021             (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4022             (!atomic_read(&card->force_alloc_skb))) {
4023                 use_rx_sg = 1;
4024         } else {
4025                 skb = dev_alloc_skb(skb_len + headroom);
4026                 if (!skb)
4027                         goto no_mem;
4028                 if (headroom)
4029                         skb_reserve(skb, headroom);
4030         }
4031
4032         data_ptr = element->addr + offset;
4033         while (skb_len) {
4034                 data_len = min(skb_len, (int)(element->length - offset));
4035                 if (data_len) {
4036                         if (use_rx_sg) {
4037                                 if (qeth_create_skb_frag(element, &skb, offset,
4038                                     &frag, data_len))
4039                                         goto no_mem;
4040                         } else {
4041                                 memcpy(skb_put(skb, data_len), data_ptr,
4042                                         data_len);
4043                         }
4044                 }
4045                 skb_len -= data_len;
4046                 if (skb_len) {
4047                         if (qeth_is_last_sbale(element)) {
4048                                 QETH_DBF_TEXT(TRACE, 4, "unexeob");
4049                                 QETH_DBF_TEXT_(TRACE, 4, "%s",
4050                                         CARD_BUS_ID(card));
4051                                 QETH_DBF_TEXT(QERR, 2, "unexeob");
4052                                 QETH_DBF_TEXT_(QERR, 2, "%s",
4053                                         CARD_BUS_ID(card));
4054                                 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
4055                                 dev_kfree_skb_any(skb);
4056                                 card->stats.rx_errors++;
4057                                 return NULL;
4058                         }
4059                         element++;
4060                         offset = 0;
4061                         data_ptr = element->addr;
4062                 } else {
4063                         offset += data_len;
4064                 }
4065         }
4066         *__element = element;
4067         *__offset = offset;
4068         if (use_rx_sg && card->options.performance_stats) {
4069                 card->perf_stats.sg_skbs_rx++;
4070                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4071         }
4072         return skb;
4073 no_mem:
4074         if (net_ratelimit()) {
4075                 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
4076                 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
4077         }
4078         card->stats.rx_dropped++;
4079         return NULL;
4080 }
4081 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4082
4083 static void qeth_unregister_dbf_views(void)
4084 {
4085         int x;
4086         for (x = 0; x < QETH_DBF_INFOS; x++) {
4087                 debug_unregister(qeth_dbf[x].id);
4088                 qeth_dbf[x].id = NULL;
4089         }
4090 }
4091
4092 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
4093 {
4094         char dbf_txt_buf[32];
4095         va_list args;
4096
4097         if (level > (qeth_dbf[dbf_nix].id)->level)
4098                 return;
4099         va_start(args, fmt);
4100         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4101         va_end(args);
4102         debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
4103 }
4104 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4105
4106 static int qeth_register_dbf_views(void)
4107 {
4108         int ret;
4109         int x;
4110
4111         for (x = 0; x < QETH_DBF_INFOS; x++) {
4112                 /* register the areas */
4113                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4114                                                 qeth_dbf[x].pages,
4115                                                 qeth_dbf[x].areas,
4116                                                 qeth_dbf[x].len);
4117                 if (qeth_dbf[x].id == NULL) {
4118                         qeth_unregister_dbf_views();
4119                         return -ENOMEM;
4120                 }
4121
4122                 /* register a view */
4123                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4124                 if (ret) {
4125                         qeth_unregister_dbf_views();
4126                         return ret;
4127                 }
4128
4129                 /* set a passing level */
4130                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4131         }
4132
4133         return 0;
4134 }
4135
4136 int qeth_core_load_discipline(struct qeth_card *card,
4137                 enum qeth_discipline_id discipline)
4138 {
4139         int rc = 0;
4140         switch (discipline) {
4141         case QETH_DISCIPLINE_LAYER3:
4142                 card->discipline.ccwgdriver = try_then_request_module(
4143                         symbol_get(qeth_l3_ccwgroup_driver),
4144                         "qeth_l3");
4145                 break;
4146         case QETH_DISCIPLINE_LAYER2:
4147                 card->discipline.ccwgdriver = try_then_request_module(
4148                         symbol_get(qeth_l2_ccwgroup_driver),
4149                         "qeth_l2");
4150                 break;
4151         }
4152         if (!card->discipline.ccwgdriver) {
4153                 dev_err(&card->gdev->dev, "There is no kernel module to "
4154                         "support discipline %d\n", discipline);
4155                 rc = -EINVAL;
4156         }
4157         return rc;
4158 }
4159
4160 void qeth_core_free_discipline(struct qeth_card *card)
4161 {
4162         if (card->options.layer2)
4163                 symbol_put(qeth_l2_ccwgroup_driver);
4164         else
4165                 symbol_put(qeth_l3_ccwgroup_driver);
4166         card->discipline.ccwgdriver = NULL;
4167 }
4168
4169 static void qeth_determine_capabilities(struct qeth_card *card)
4170 {
4171         int rc;
4172         int length;
4173         char *prcd;
4174
4175         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4176         rc = ccw_device_set_online(CARD_DDEV(card));
4177         if (rc) {
4178                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4179                 goto out;
4180         }
4181
4182
4183         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4184         if (rc) {
4185                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4186                         dev_name(&card->gdev->dev), rc);
4187                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4188                 goto out_offline;
4189         }
4190         qeth_configure_unitaddr(card, prcd);
4191         qeth_configure_blkt_default(card, prcd);
4192         kfree(prcd);
4193
4194         rc = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
4195         if (rc)
4196                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4197
4198 out_offline:
4199         ccw_device_set_offline(CARD_DDEV(card));
4200 out:
4201         return;
4202 }
4203
4204 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4205 {
4206         struct qeth_card *card;
4207         struct device *dev;
4208         int rc;
4209         unsigned long flags;
4210
4211         QETH_DBF_TEXT(SETUP, 2, "probedev");
4212
4213         dev = &gdev->dev;
4214         if (!get_device(dev))
4215                 return -ENODEV;
4216
4217         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4218
4219         card = qeth_alloc_card();
4220         if (!card) {
4221                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4222                 rc = -ENOMEM;
4223                 goto err_dev;
4224         }
4225         card->read.ccwdev  = gdev->cdev[0];
4226         card->write.ccwdev = gdev->cdev[1];
4227         card->data.ccwdev  = gdev->cdev[2];
4228         dev_set_drvdata(&gdev->dev, card);
4229         card->gdev = gdev;
4230         gdev->cdev[0]->handler = qeth_irq;
4231         gdev->cdev[1]->handler = qeth_irq;
4232         gdev->cdev[2]->handler = qeth_irq;
4233
4234         rc = qeth_determine_card_type(card);
4235         if (rc) {
4236                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4237                 goto err_card;
4238         }
4239         rc = qeth_setup_card(card);
4240         if (rc) {
4241                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4242                 goto err_card;
4243         }
4244
4245         if (card->info.type == QETH_CARD_TYPE_OSN) {
4246                 rc = qeth_core_create_osn_attributes(dev);
4247                 if (rc)
4248                         goto err_card;
4249                 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4250                 if (rc) {
4251                         qeth_core_remove_osn_attributes(dev);
4252                         goto err_card;
4253                 }
4254                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4255                 if (rc) {
4256                         qeth_core_free_discipline(card);
4257                         qeth_core_remove_osn_attributes(dev);
4258                         goto err_card;
4259                 }
4260         } else {
4261                 rc = qeth_core_create_device_attributes(dev);
4262                 if (rc)
4263                         goto err_card;
4264         }
4265
4266         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4267         list_add_tail(&card->list, &qeth_core_card_list.list);
4268         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4269
4270         qeth_determine_capabilities(card);
4271         return 0;
4272
4273 err_card:
4274         qeth_core_free_card(card);
4275 err_dev:
4276         put_device(dev);
4277         return rc;
4278 }
4279
4280 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4281 {
4282         unsigned long flags;
4283         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4284
4285         QETH_DBF_TEXT(SETUP, 2, "removedv");
4286         if (card->discipline.ccwgdriver) {
4287                 card->discipline.ccwgdriver->remove(gdev);
4288                 qeth_core_free_discipline(card);
4289         }
4290
4291         if (card->info.type == QETH_CARD_TYPE_OSN) {
4292                 qeth_core_remove_osn_attributes(&gdev->dev);
4293         } else {
4294                 qeth_core_remove_device_attributes(&gdev->dev);
4295         }
4296         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4297         list_del(&card->list);
4298         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4299         qeth_core_free_card(card);
4300         dev_set_drvdata(&gdev->dev, NULL);
4301         put_device(&gdev->dev);
4302         return;
4303 }
4304
4305 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4306 {
4307         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4308         int rc = 0;
4309         int def_discipline;
4310
4311         if (!card->discipline.ccwgdriver) {
4312                 if (card->info.type == QETH_CARD_TYPE_IQD)
4313                         def_discipline = QETH_DISCIPLINE_LAYER3;
4314                 else
4315                         def_discipline = QETH_DISCIPLINE_LAYER2;
4316                 rc = qeth_core_load_discipline(card, def_discipline);
4317                 if (rc)
4318                         goto err;
4319                 rc = card->discipline.ccwgdriver->probe(card->gdev);
4320                 if (rc)
4321                         goto err;
4322         }
4323         rc = card->discipline.ccwgdriver->set_online(gdev);
4324 err:
4325         return rc;
4326 }
4327
4328 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4329 {
4330         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4331         return card->discipline.ccwgdriver->set_offline(gdev);
4332 }
4333
4334 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4335 {
4336         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4337         if (card->discipline.ccwgdriver &&
4338             card->discipline.ccwgdriver->shutdown)
4339                 card->discipline.ccwgdriver->shutdown(gdev);
4340 }
4341
4342 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4343 {
4344         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4345         if (card->discipline.ccwgdriver &&
4346             card->discipline.ccwgdriver->prepare)
4347                 return card->discipline.ccwgdriver->prepare(gdev);
4348         return 0;
4349 }
4350
4351 static void qeth_core_complete(struct ccwgroup_device *gdev)
4352 {
4353         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4354         if (card->discipline.ccwgdriver &&
4355             card->discipline.ccwgdriver->complete)
4356                 card->discipline.ccwgdriver->complete(gdev);
4357 }
4358
4359 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4360 {
4361         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4362         if (card->discipline.ccwgdriver &&
4363             card->discipline.ccwgdriver->freeze)
4364                 return card->discipline.ccwgdriver->freeze(gdev);
4365         return 0;
4366 }
4367
4368 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4369 {
4370         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4371         if (card->discipline.ccwgdriver &&
4372             card->discipline.ccwgdriver->thaw)
4373                 return card->discipline.ccwgdriver->thaw(gdev);
4374         return 0;
4375 }
4376
4377 static int qeth_core_restore(struct ccwgroup_device *gdev)
4378 {
4379         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4380         if (card->discipline.ccwgdriver &&
4381             card->discipline.ccwgdriver->restore)
4382                 return card->discipline.ccwgdriver->restore(gdev);
4383         return 0;
4384 }
4385
4386 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4387         .owner = THIS_MODULE,
4388         .name = "qeth",
4389         .driver_id = 0xD8C5E3C8,
4390         .probe = qeth_core_probe_device,
4391         .remove = qeth_core_remove_device,
4392         .set_online = qeth_core_set_online,
4393         .set_offline = qeth_core_set_offline,
4394         .shutdown = qeth_core_shutdown,
4395         .prepare = qeth_core_prepare,
4396         .complete = qeth_core_complete,
4397         .freeze = qeth_core_freeze,
4398         .thaw = qeth_core_thaw,
4399         .restore = qeth_core_restore,
4400 };
4401
4402 static ssize_t
4403 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4404                            size_t count)
4405 {
4406         int err;
4407         err = qeth_core_driver_group(buf, qeth_core_root_dev,
4408                                         qeth_core_ccwgroup_driver.driver_id);
4409         if (err)
4410                 return err;
4411         else
4412                 return count;
4413 }
4414
4415 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4416
4417 static struct {
4418         const char str[ETH_GSTRING_LEN];
4419 } qeth_ethtool_stats_keys[] = {
4420 /*  0 */{"rx skbs"},
4421         {"rx buffers"},
4422         {"tx skbs"},
4423         {"tx buffers"},
4424         {"tx skbs no packing"},
4425         {"tx buffers no packing"},
4426         {"tx skbs packing"},
4427         {"tx buffers packing"},
4428         {"tx sg skbs"},
4429         {"tx sg frags"},
4430 /* 10 */{"rx sg skbs"},
4431         {"rx sg frags"},
4432         {"rx sg page allocs"},
4433         {"tx large kbytes"},
4434         {"tx large count"},
4435         {"tx pk state ch n->p"},
4436         {"tx pk state ch p->n"},
4437         {"tx pk watermark low"},
4438         {"tx pk watermark high"},
4439         {"queue 0 buffer usage"},
4440 /* 20 */{"queue 1 buffer usage"},
4441         {"queue 2 buffer usage"},
4442         {"queue 3 buffer usage"},
4443         {"rx handler time"},
4444         {"rx handler count"},
4445         {"rx do_QDIO time"},
4446         {"rx do_QDIO count"},
4447         {"tx handler time"},
4448         {"tx handler count"},
4449         {"tx time"},
4450 /* 30 */{"tx count"},
4451         {"tx do_QDIO time"},
4452         {"tx do_QDIO count"},
4453         {"tx csum"},
4454         {"tx lin"},
4455 };
4456
4457 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4458 {
4459         switch (stringset) {
4460         case ETH_SS_STATS:
4461                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4462         default:
4463                 return -EINVAL;
4464         }
4465 }
4466 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4467
4468 void qeth_core_get_ethtool_stats(struct net_device *dev,
4469                 struct ethtool_stats *stats, u64 *data)
4470 {
4471         struct qeth_card *card = dev->ml_priv;
4472         data[0] = card->stats.rx_packets -
4473                                 card->perf_stats.initial_rx_packets;
4474         data[1] = card->perf_stats.bufs_rec;
4475         data[2] = card->stats.tx_packets -
4476                                 card->perf_stats.initial_tx_packets;
4477         data[3] = card->perf_stats.bufs_sent;
4478         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4479                         - card->perf_stats.skbs_sent_pack;
4480         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4481         data[6] = card->perf_stats.skbs_sent_pack;
4482         data[7] = card->perf_stats.bufs_sent_pack;
4483         data[8] = card->perf_stats.sg_skbs_sent;
4484         data[9] = card->perf_stats.sg_frags_sent;
4485         data[10] = card->perf_stats.sg_skbs_rx;
4486         data[11] = card->perf_stats.sg_frags_rx;
4487         data[12] = card->perf_stats.sg_alloc_page_rx;
4488         data[13] = (card->perf_stats.large_send_bytes >> 10);
4489         data[14] = card->perf_stats.large_send_cnt;
4490         data[15] = card->perf_stats.sc_dp_p;
4491         data[16] = card->perf_stats.sc_p_dp;
4492         data[17] = QETH_LOW_WATERMARK_PACK;
4493         data[18] = QETH_HIGH_WATERMARK_PACK;
4494         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4495         data[20] = (card->qdio.no_out_queues > 1) ?
4496                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4497         data[21] = (card->qdio.no_out_queues > 2) ?
4498                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4499         data[22] = (card->qdio.no_out_queues > 3) ?
4500                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4501         data[23] = card->perf_stats.inbound_time;
4502         data[24] = card->perf_stats.inbound_cnt;
4503         data[25] = card->perf_stats.inbound_do_qdio_time;
4504         data[26] = card->perf_stats.inbound_do_qdio_cnt;
4505         data[27] = card->perf_stats.outbound_handler_time;
4506         data[28] = card->perf_stats.outbound_handler_cnt;
4507         data[29] = card->perf_stats.outbound_time;
4508         data[30] = card->perf_stats.outbound_cnt;
4509         data[31] = card->perf_stats.outbound_do_qdio_time;
4510         data[32] = card->perf_stats.outbound_do_qdio_cnt;
4511         data[33] = card->perf_stats.tx_csum;
4512         data[34] = card->perf_stats.tx_lin;
4513 }
4514 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4515
4516 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4517 {
4518         switch (stringset) {
4519         case ETH_SS_STATS:
4520                 memcpy(data, &qeth_ethtool_stats_keys,
4521                         sizeof(qeth_ethtool_stats_keys));
4522                 break;
4523         default:
4524                 WARN_ON(1);
4525                 break;
4526         }
4527 }
4528 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4529
4530 void qeth_core_get_drvinfo(struct net_device *dev,
4531                 struct ethtool_drvinfo *info)
4532 {
4533         struct qeth_card *card = dev->ml_priv;
4534         if (card->options.layer2)
4535                 strcpy(info->driver, "qeth_l2");
4536         else
4537                 strcpy(info->driver, "qeth_l3");
4538
4539         strcpy(info->version, "1.0");
4540         strcpy(info->fw_version, card->info.mcl_level);
4541         sprintf(info->bus_info, "%s/%s/%s",
4542                         CARD_RDEV_ID(card),
4543                         CARD_WDEV_ID(card),
4544                         CARD_DDEV_ID(card));
4545 }
4546 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4547
4548 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4549                                         struct ethtool_cmd *ecmd)
4550 {
4551         struct qeth_card *card = netdev->ml_priv;
4552         enum qeth_link_types link_type;
4553
4554         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4555                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4556         else
4557                 link_type = card->info.link_type;
4558
4559         ecmd->transceiver = XCVR_INTERNAL;
4560         ecmd->supported = SUPPORTED_Autoneg;
4561         ecmd->advertising = ADVERTISED_Autoneg;
4562         ecmd->duplex = DUPLEX_FULL;
4563         ecmd->autoneg = AUTONEG_ENABLE;
4564
4565         switch (link_type) {
4566         case QETH_LINK_TYPE_FAST_ETH:
4567         case QETH_LINK_TYPE_LANE_ETH100:
4568                 ecmd->supported |= SUPPORTED_10baseT_Half |
4569                                         SUPPORTED_10baseT_Full |
4570                                         SUPPORTED_100baseT_Half |
4571                                         SUPPORTED_100baseT_Full |
4572                                         SUPPORTED_TP;
4573                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4574                                         ADVERTISED_10baseT_Full |
4575                                         ADVERTISED_100baseT_Half |
4576                                         ADVERTISED_100baseT_Full |
4577                                         ADVERTISED_TP;
4578                 ecmd->speed = SPEED_100;
4579                 ecmd->port = PORT_TP;
4580                 break;
4581
4582         case QETH_LINK_TYPE_GBIT_ETH:
4583         case QETH_LINK_TYPE_LANE_ETH1000:
4584                 ecmd->supported |= SUPPORTED_10baseT_Half |
4585                                         SUPPORTED_10baseT_Full |
4586                                         SUPPORTED_100baseT_Half |
4587                                         SUPPORTED_100baseT_Full |
4588                                         SUPPORTED_1000baseT_Half |
4589                                         SUPPORTED_1000baseT_Full |
4590                                         SUPPORTED_FIBRE;
4591                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4592                                         ADVERTISED_10baseT_Full |
4593                                         ADVERTISED_100baseT_Half |
4594                                         ADVERTISED_100baseT_Full |
4595                                         ADVERTISED_1000baseT_Half |
4596                                         ADVERTISED_1000baseT_Full |
4597                                         ADVERTISED_FIBRE;
4598                 ecmd->speed = SPEED_1000;
4599                 ecmd->port = PORT_FIBRE;
4600                 break;
4601
4602         case QETH_LINK_TYPE_10GBIT_ETH:
4603                 ecmd->supported |= SUPPORTED_10baseT_Half |
4604                                         SUPPORTED_10baseT_Full |
4605                                         SUPPORTED_100baseT_Half |
4606                                         SUPPORTED_100baseT_Full |
4607                                         SUPPORTED_1000baseT_Half |
4608                                         SUPPORTED_1000baseT_Full |
4609                                         SUPPORTED_10000baseT_Full |
4610                                         SUPPORTED_FIBRE;
4611                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4612                                         ADVERTISED_10baseT_Full |
4613                                         ADVERTISED_100baseT_Half |
4614                                         ADVERTISED_100baseT_Full |
4615                                         ADVERTISED_1000baseT_Half |
4616                                         ADVERTISED_1000baseT_Full |
4617                                         ADVERTISED_10000baseT_Full |
4618                                         ADVERTISED_FIBRE;
4619                 ecmd->speed = SPEED_10000;
4620                 ecmd->port = PORT_FIBRE;
4621                 break;
4622
4623         default:
4624                 ecmd->supported |= SUPPORTED_10baseT_Half |
4625                                         SUPPORTED_10baseT_Full |
4626                                         SUPPORTED_TP;
4627                 ecmd->advertising |= ADVERTISED_10baseT_Half |
4628                                         ADVERTISED_10baseT_Full |
4629                                         ADVERTISED_TP;
4630                 ecmd->speed = SPEED_10;
4631                 ecmd->port = PORT_TP;
4632         }
4633
4634         return 0;
4635 }
4636 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4637
4638 static int __init qeth_core_init(void)
4639 {
4640         int rc;
4641
4642         pr_info("loading core functions\n");
4643         INIT_LIST_HEAD(&qeth_core_card_list.list);
4644         rwlock_init(&qeth_core_card_list.rwlock);
4645
4646         rc = qeth_register_dbf_views();
4647         if (rc)
4648                 goto out_err;
4649         rc = ccw_driver_register(&qeth_ccw_driver);
4650         if (rc)
4651                 goto ccw_err;
4652         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4653         if (rc)
4654                 goto ccwgroup_err;
4655         rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4656                                 &driver_attr_group);
4657         if (rc)
4658                 goto driver_err;
4659         qeth_core_root_dev = root_device_register("qeth");
4660         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4661         if (rc)
4662                 goto register_err;
4663
4664         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4665                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4666         if (!qeth_core_header_cache) {
4667                 rc = -ENOMEM;
4668                 goto slab_err;
4669         }
4670
4671         return 0;
4672 slab_err:
4673         root_device_unregister(qeth_core_root_dev);
4674 register_err:
4675         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4676                            &driver_attr_group);
4677 driver_err:
4678         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4679 ccwgroup_err:
4680         ccw_driver_unregister(&qeth_ccw_driver);
4681 ccw_err:
4682         QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4683         qeth_unregister_dbf_views();
4684 out_err:
4685         pr_err("Initializing the qeth device driver failed\n");
4686         return rc;
4687 }
4688
4689 static void __exit qeth_core_exit(void)
4690 {
4691         root_device_unregister(qeth_core_root_dev);
4692         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4693                            &driver_attr_group);
4694         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4695         ccw_driver_unregister(&qeth_ccw_driver);
4696         kmem_cache_destroy(qeth_core_header_cache);
4697         qeth_unregister_dbf_views();
4698         pr_info("core functions removed\n");
4699 }
4700
4701 module_init(qeth_core_init);
4702 module_exit(qeth_core_exit);
4703 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4704 MODULE_DESCRIPTION("qeth core functions");
4705 MODULE_LICENSE("GPL");