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qeth_core_main.c

/*
 *  drivers/s390/net/qeth_core_main.c
 *
 *    Copyright IBM Corp. 2007, 2009
 *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
 *           Frank Pavlic <fpavlic@de.ibm.com>,
 *           Thomas Spatzier <tspat@de.ibm.com>,
 *           Frank Blaschka <frank.blaschka@de.ibm.com>
 */

#define KMSG_COMPONENT "qeth"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/mii.h>
#include <linux/kthread.h>

#include <asm/ebcdic.h>
#include <asm/io.h>

#include "qeth_core.h"

struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
      /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
      /*                   N  P  A    M  L  V                      H  */
      [QETH_DBF_SETUP] = {"qeth_setup",
                        8, 1,   8, 5, &debug_hex_ascii_view, NULL},
      [QETH_DBF_QERR]  = {"qeth_qerr",
                        2, 1,   8, 2, &debug_hex_ascii_view, NULL},
      [QETH_DBF_TRACE] = {"qeth_trace",
                        4, 1,   8, 3, &debug_hex_ascii_view, NULL},
      [QETH_DBF_MSG]   = {"qeth_msg",
                        8, 1, 128, 3, &debug_sprintf_view,   NULL},
      [QETH_DBF_SENSE] = {"qeth_sense",
                        2, 1,  64, 2, &debug_hex_ascii_view, NULL},
      [QETH_DBF_MISC]    = {"qeth_misc",
                        2, 1, 256, 2, &debug_hex_ascii_view, NULL},
      [QETH_DBF_CTRL]  = {"qeth_control",
            8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
};
EXPORT_SYMBOL_GPL(qeth_dbf);

struct qeth_card_list_struct qeth_core_card_list;
EXPORT_SYMBOL_GPL(qeth_core_card_list);
struct kmem_cache *qeth_core_header_cache;
EXPORT_SYMBOL_GPL(qeth_core_header_cache);

static struct device *qeth_core_root_dev;
static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
static struct lock_class_key qdio_out_skb_queue_key;

static void qeth_send_control_data_cb(struct qeth_channel *,
                  struct qeth_cmd_buffer *);
static int qeth_issue_next_read(struct qeth_card *);
static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
static void qeth_free_buffer_pool(struct qeth_card *);
static int qeth_qdio_establish(struct qeth_card *);


static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
            struct qdio_buffer *buffer, int is_tso,
            int *next_element_to_fill)
{
      struct skb_frag_struct *frag;
      int fragno;
      unsigned long addr;
      int element, cnt, dlen;

      fragno = skb_shinfo(skb)->nr_frags;
      element = *next_element_to_fill;
      dlen = 0;

      if (is_tso)
            buffer->element[element].flags =
                  SBAL_FLAGS_MIDDLE_FRAG;
      else
            buffer->element[element].flags =
                  SBAL_FLAGS_FIRST_FRAG;
      dlen = skb->len - skb->data_len;
      if (dlen) {
            buffer->element[element].addr = skb->data;
            buffer->element[element].length = dlen;
            element++;
      }
      for (cnt = 0; cnt < fragno; cnt++) {
            frag = &skb_shinfo(skb)->frags[cnt];
            addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
                  frag->page_offset;
            buffer->element[element].addr = (char *)addr;
            buffer->element[element].length = frag->size;
            if (cnt < (fragno - 1))
                  buffer->element[element].flags =
                        SBAL_FLAGS_MIDDLE_FRAG;
            else
                  buffer->element[element].flags =
                        SBAL_FLAGS_LAST_FRAG;
            element++;
      }
      *next_element_to_fill = element;
}

static inline const char *qeth_get_cardname(struct qeth_card *card)
{
      if (card->info.guestlan) {
            switch (card->info.type) {
            case QETH_CARD_TYPE_OSAE:
                  return " Guest LAN QDIO";
            case QETH_CARD_TYPE_IQD:
                  return " Guest LAN Hiper";
            default:
                  return " unknown";
            }
      } else {
            switch (card->info.type) {
            case QETH_CARD_TYPE_OSAE:
                  return " OSD Express";
            case QETH_CARD_TYPE_IQD:
                  return " HiperSockets";
            case QETH_CARD_TYPE_OSN:
                  return " OSN QDIO";
            default:
                  return " unknown";
            }
      }
      return " n/a";
}

/* max length to be returned: 14 */
const char *qeth_get_cardname_short(struct qeth_card *card)
{
      if (card->info.guestlan) {
            switch (card->info.type) {
            case QETH_CARD_TYPE_OSAE:
                  return "GuestLAN QDIO";
            case QETH_CARD_TYPE_IQD:
                  return "GuestLAN Hiper";
            default:
                  return "unknown";
            }
      } else {
            switch (card->info.type) {
            case QETH_CARD_TYPE_OSAE:
                  switch (card->info.link_type) {
                  case QETH_LINK_TYPE_FAST_ETH:
                        return "OSD_100";
                  case QETH_LINK_TYPE_HSTR:
                        return "HSTR";
                  case QETH_LINK_TYPE_GBIT_ETH:
                        return "OSD_1000";
                  case QETH_LINK_TYPE_10GBIT_ETH:
                        return "OSD_10GIG";
                  case QETH_LINK_TYPE_LANE_ETH100:
                        return "OSD_FE_LANE";
                  case QETH_LINK_TYPE_LANE_TR:
                        return "OSD_TR_LANE";
                  case QETH_LINK_TYPE_LANE_ETH1000:
                        return "OSD_GbE_LANE";
                  case QETH_LINK_TYPE_LANE:
                        return "OSD_ATM_LANE";
                  default:
                        return "OSD_Express";
                  }
            case QETH_CARD_TYPE_IQD:
                  return "HiperSockets";
            case QETH_CARD_TYPE_OSN:
                  return "OSN";
            default:
                  return "unknown";
            }
      }
      return "n/a";
}

void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
                   int clear_start_mask)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      card->thread_allowed_mask = threads;
      if (clear_start_mask)
            card->thread_start_mask &= threads;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);

int qeth_threads_running(struct qeth_card *card, unsigned long threads)
{
      unsigned long flags;
      int rc = 0;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      rc = (card->thread_running_mask & threads);
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_threads_running);

int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
{
      return wait_event_interruptible(card->wait_q,
                  qeth_threads_running(card, threads) == 0);
}
EXPORT_SYMBOL_GPL(qeth_wait_for_threads);

void qeth_clear_working_pool_list(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *pool_entry, *tmp;

      QETH_DBF_TEXT(TRACE, 5, "clwrklst");
      list_for_each_entry_safe(pool_entry, tmp,
                      &card->qdio.in_buf_pool.entry_list, list){
                  list_del(&pool_entry->list);
      }
}
EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);

static int qeth_alloc_buffer_pool(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *pool_entry;
      void *ptr;
      int i, j;

      QETH_DBF_TEXT(TRACE, 5, "alocpool");
      for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
            pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
            if (!pool_entry) {
                  qeth_free_buffer_pool(card);
                  return -ENOMEM;
            }
            for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
                  ptr = (void *) __get_free_page(GFP_KERNEL);
                  if (!ptr) {
                        while (j > 0)
                              free_page((unsigned long)
                                      pool_entry->elements[--j]);
                        kfree(pool_entry);
                        qeth_free_buffer_pool(card);
                        return -ENOMEM;
                  }
                  pool_entry->elements[j] = ptr;
            }
            list_add(&pool_entry->init_list,
                   &card->qdio.init_pool.entry_list);
      }
      return 0;
}

int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
{
      QETH_DBF_TEXT(TRACE, 2, "realcbp");

      if ((card->state != CARD_STATE_DOWN) &&
          (card->state != CARD_STATE_RECOVER))
            return -EPERM;

      /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
      qeth_clear_working_pool_list(card);
      qeth_free_buffer_pool(card);
      card->qdio.in_buf_pool.buf_count = bufcnt;
      card->qdio.init_pool.buf_count = bufcnt;
      return qeth_alloc_buffer_pool(card);
}

int qeth_set_large_send(struct qeth_card *card,
            enum qeth_large_send_types type)
{
      int rc = 0;

      if (card->dev == NULL) {
            card->options.large_send = type;
            return 0;
      }
      if (card->state == CARD_STATE_UP)
            netif_tx_disable(card->dev);
      card->options.large_send = type;
      switch (card->options.large_send) {
      case QETH_LARGE_SEND_TSO:
            if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
                  card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
                                    NETIF_F_HW_CSUM;
            } else {
                  card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
                                    NETIF_F_HW_CSUM);
                  card->options.large_send = QETH_LARGE_SEND_NO;
                  rc = -EOPNOTSUPP;
            }
            break;
      default: /* includes QETH_LARGE_SEND_NO */
            card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
                              NETIF_F_HW_CSUM);
            break;
      }
      if (card->state == CARD_STATE_UP)
            netif_wake_queue(card->dev);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_set_large_send);

static int qeth_issue_next_read(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(TRACE, 5, "issnxrd");
      if (card->read.state != CH_STATE_UP)
            return -EIO;
      iob = qeth_get_buffer(&card->read);
      if (!iob) {
            dev_warn(&card->gdev->dev, "The qeth device driver "
                  "failed to recover an error on the device\n");
            QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
                  "available\n", dev_name(&card->gdev->dev));
            return -ENOMEM;
      }
      qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
      QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
      rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
                        (addr_t) iob, 0, 0);
      if (rc) {
            QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
                  "rc=%i\n", dev_name(&card->gdev->dev), rc);
            atomic_set(&card->read.irq_pending, 0);
            qeth_schedule_recovery(card);
            wake_up(&card->wait_q);
      }
      return rc;
}

static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
{
      struct qeth_reply *reply;

      reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
      if (reply) {
            atomic_set(&reply->refcnt, 1);
            atomic_set(&reply->received, 0);
            reply->card = card;
      };
      return reply;
}

static void qeth_get_reply(struct qeth_reply *reply)
{
      WARN_ON(atomic_read(&reply->refcnt) <= 0);
      atomic_inc(&reply->refcnt);
}

static void qeth_put_reply(struct qeth_reply *reply)
{
      WARN_ON(atomic_read(&reply->refcnt) <= 0);
      if (atomic_dec_and_test(&reply->refcnt))
            kfree(reply);
}

static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
            struct qeth_card *card)
{
      char *ipa_name;
      int com = cmd->hdr.command;
      ipa_name = qeth_get_ipa_cmd_name(com);
      if (rc)
            QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
                        ipa_name, com, QETH_CARD_IFNAME(card),
                              rc, qeth_get_ipa_msg(rc));
      else
            QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
                        ipa_name, com, QETH_CARD_IFNAME(card));
}

static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
            struct qeth_cmd_buffer *iob)
{
      struct qeth_ipa_cmd *cmd = NULL;

      QETH_DBF_TEXT(TRACE, 5, "chkipad");
      if (IS_IPA(iob->data)) {
            cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
            if (IS_IPA_REPLY(cmd)) {
                  if (cmd->hdr.command < IPA_CMD_SETCCID ||
                      cmd->hdr.command > IPA_CMD_MODCCID)
                        qeth_issue_ipa_msg(cmd,
                                    cmd->hdr.return_code, card);
                  return cmd;
            } else {
                  switch (cmd->hdr.command) {
                  case IPA_CMD_STOPLAN:
                        dev_warn(&card->gdev->dev,
                                 "The link for interface %s on CHPID"
                                 " 0x%X failed\n",
                                 QETH_CARD_IFNAME(card),
                                 card->info.chpid);
                        card->lan_online = 0;
                        if (card->dev && netif_carrier_ok(card->dev))
                              netif_carrier_off(card->dev);
                        return NULL;
                  case IPA_CMD_STARTLAN:
                        dev_info(&card->gdev->dev,
                                 "The link for %s on CHPID 0x%X has"
                                 " been restored\n",
                                 QETH_CARD_IFNAME(card),
                                 card->info.chpid);
                        netif_carrier_on(card->dev);
                        card->lan_online = 1;
                        qeth_schedule_recovery(card);
                        return NULL;
                  case IPA_CMD_MODCCID:
                        return cmd;
                  case IPA_CMD_REGISTER_LOCAL_ADDR:
                        QETH_DBF_TEXT(TRACE, 3, "irla");
                        break;
                  case IPA_CMD_UNREGISTER_LOCAL_ADDR:
                        QETH_DBF_TEXT(TRACE, 3, "urla");
                        break;
                  default:
                        QETH_DBF_MESSAGE(2, "Received data is IPA "
                                 "but not a reply!\n");
                        break;
                  }
            }
      }
      return cmd;
}

void qeth_clear_ipacmd_list(struct qeth_card *card)
{
      struct qeth_reply *reply, *r;
      unsigned long flags;

      QETH_DBF_TEXT(TRACE, 4, "clipalst");

      spin_lock_irqsave(&card->lock, flags);
      list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
            qeth_get_reply(reply);
            reply->rc = -EIO;
            atomic_inc(&reply->received);
            list_del_init(&reply->list);
            wake_up(&reply->wait_q);
            qeth_put_reply(reply);
      }
      spin_unlock_irqrestore(&card->lock, flags);
}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);

static int qeth_check_idx_response(unsigned char *buffer)
{
      if (!buffer)
            return 0;

      QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
      if ((buffer[2] & 0xc0) == 0xc0) {
            QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
                     "with cause code 0x%02x%s\n",
                     buffer[4],
                     ((buffer[4] == 0x22) ?
                      " -- try another portname" : ""));
            QETH_DBF_TEXT(TRACE, 2, "ckidxres");
            QETH_DBF_TEXT(TRACE, 2, " idxterm");
            QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
            return -EIO;
      }
      return 0;
}

static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
            __u32 len)
{
      struct qeth_card *card;

      QETH_DBF_TEXT(TRACE, 4, "setupccw");
      card = CARD_FROM_CDEV(channel->ccwdev);
      if (channel == &card->read)
            memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
      else
            memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
      channel->ccw.count = len;
      channel->ccw.cda = (__u32) __pa(iob);
}

static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
{
      __u8 index;

      QETH_DBF_TEXT(TRACE, 6, "getbuff");
      index = channel->io_buf_no;
      do {
            if (channel->iob[index].state == BUF_STATE_FREE) {
                  channel->iob[index].state = BUF_STATE_LOCKED;
                  channel->io_buf_no = (channel->io_buf_no + 1) %
                        QETH_CMD_BUFFER_NO;
                  memset(channel->iob[index].data, 0, QETH_BUFSIZE);
                  return channel->iob + index;
            }
            index = (index + 1) % QETH_CMD_BUFFER_NO;
      } while (index != channel->io_buf_no);

      return NULL;
}

void qeth_release_buffer(struct qeth_channel *channel,
            struct qeth_cmd_buffer *iob)
{
      unsigned long flags;

      QETH_DBF_TEXT(TRACE, 6, "relbuff");
      spin_lock_irqsave(&channel->iob_lock, flags);
      memset(iob->data, 0, QETH_BUFSIZE);
      iob->state = BUF_STATE_FREE;
      iob->callback = qeth_send_control_data_cb;
      iob->rc = 0;
      spin_unlock_irqrestore(&channel->iob_lock, flags);
}
EXPORT_SYMBOL_GPL(qeth_release_buffer);

static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
{
      struct qeth_cmd_buffer *buffer = NULL;
      unsigned long flags;

      spin_lock_irqsave(&channel->iob_lock, flags);
      buffer = __qeth_get_buffer(channel);
      spin_unlock_irqrestore(&channel->iob_lock, flags);
      return buffer;
}

struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
{
      struct qeth_cmd_buffer *buffer;
      wait_event(channel->wait_q,
               ((buffer = qeth_get_buffer(channel)) != NULL));
      return buffer;
}
EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);

void qeth_clear_cmd_buffers(struct qeth_channel *channel)
{
      int cnt;

      for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
            qeth_release_buffer(channel, &channel->iob[cnt]);
      channel->buf_no = 0;
      channel->io_buf_no = 0;
}
EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);

static void qeth_send_control_data_cb(struct qeth_channel *channel,
              struct qeth_cmd_buffer *iob)
{
      struct qeth_card *card;
      struct qeth_reply *reply, *r;
      struct qeth_ipa_cmd *cmd;
      unsigned long flags;
      int keep_reply;

      QETH_DBF_TEXT(TRACE, 4, "sndctlcb");

      card = CARD_FROM_CDEV(channel->ccwdev);
      if (qeth_check_idx_response(iob->data)) {
            qeth_clear_ipacmd_list(card);
            if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6)
                  dev_err(&card->gdev->dev,
                        "The qeth device is not configured "
                        "for the OSI layer required by z/VM\n");
            qeth_schedule_recovery(card);
            goto out;
      }

      cmd = qeth_check_ipa_data(card, iob);
      if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
            goto out;
      /*in case of OSN : check if cmd is set */
      if (card->info.type == QETH_CARD_TYPE_OSN &&
          cmd &&
          cmd->hdr.command != IPA_CMD_STARTLAN &&
          card->osn_info.assist_cb != NULL) {
            card->osn_info.assist_cb(card->dev, cmd);
            goto out;
      }

      spin_lock_irqsave(&card->lock, flags);
      list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
            if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
                ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
                  qeth_get_reply(reply);
                  list_del_init(&reply->list);
                  spin_unlock_irqrestore(&card->lock, flags);
                  keep_reply = 0;
                  if (reply->callback != NULL) {
                        if (cmd) {
                              reply->offset = (__u16)((char *)cmd -
                                          (char *)iob->data);
                              keep_reply = reply->callback(card,
                                          reply,
                                          (unsigned long)cmd);
                        } else
                              keep_reply = reply->callback(card,
                                          reply,
                                          (unsigned long)iob);
                  }
                  if (cmd)
                        reply->rc = (u16) cmd->hdr.return_code;
                  else if (iob->rc)
                        reply->rc = iob->rc;
                  if (keep_reply) {
                        spin_lock_irqsave(&card->lock, flags);
                        list_add_tail(&reply->list,
                                    &card->cmd_waiter_list);
                        spin_unlock_irqrestore(&card->lock, flags);
                  } else {
                        atomic_inc(&reply->received);
                        wake_up(&reply->wait_q);
                  }
                  qeth_put_reply(reply);
                  goto out;
            }
      }
      spin_unlock_irqrestore(&card->lock, flags);
out:
      memcpy(&card->seqno.pdu_hdr_ack,
            QETH_PDU_HEADER_SEQ_NO(iob->data),
            QETH_SEQ_NO_LENGTH);
      qeth_release_buffer(channel, iob);
}

static int qeth_setup_channel(struct qeth_channel *channel)
{
      int cnt;

      QETH_DBF_TEXT(SETUP, 2, "setupch");
      for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
            channel->iob[cnt].data = (char *)
                  kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
            if (channel->iob[cnt].data == NULL)
                  break;
            channel->iob[cnt].state = BUF_STATE_FREE;
            channel->iob[cnt].channel = channel;
            channel->iob[cnt].callback = qeth_send_control_data_cb;
            channel->iob[cnt].rc = 0;
      }
      if (cnt < QETH_CMD_BUFFER_NO) {
            while (cnt-- > 0)
                  kfree(channel->iob[cnt].data);
            return -ENOMEM;
      }
      channel->buf_no = 0;
      channel->io_buf_no = 0;
      atomic_set(&channel->irq_pending, 0);
      spin_lock_init(&channel->iob_lock);

      init_waitqueue_head(&channel->wait_q);
      return 0;
}

static int qeth_set_thread_start_bit(struct qeth_card *card,
            unsigned long thread)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      if (!(card->thread_allowed_mask & thread) ||
            (card->thread_start_mask & thread)) {
            spin_unlock_irqrestore(&card->thread_mask_lock, flags);
            return -EPERM;
      }
      card->thread_start_mask |= thread;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return 0;
}

void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      card->thread_start_mask &= ~thread;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);

void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      card->thread_running_mask &= ~thread;
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);

static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;
      int rc = 0;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      if (card->thread_start_mask & thread) {
            if ((card->thread_allowed_mask & thread) &&
                !(card->thread_running_mask & thread)) {
                  rc = 1;
                  card->thread_start_mask &= ~thread;
                  card->thread_running_mask |= thread;
            } else
                  rc = -EPERM;
      }
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return rc;
}

int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
      int rc = 0;

      wait_event(card->wait_q,
               (rc = __qeth_do_run_thread(card, thread)) >= 0);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_do_run_thread);

void qeth_schedule_recovery(struct qeth_card *card)
{
      QETH_DBF_TEXT(TRACE, 2, "startrec");
      if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
            schedule_work(&card->kernel_thread_starter);
}
EXPORT_SYMBOL_GPL(qeth_schedule_recovery);

static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
{
      int dstat, cstat;
      char *sense;

      sense = (char *) irb->ecw;
      cstat = irb->scsw.cmd.cstat;
      dstat = irb->scsw.cmd.dstat;

      if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
                 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
                 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
            QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
            dev_warn(&cdev->dev, "The qeth device driver "
                  "failed to recover an error on the device\n");
            QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
                  dev_name(&cdev->dev), dstat, cstat);
            print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
                        16, 1, irb, 64, 1);
            return 1;
      }

      if (dstat & DEV_STAT_UNIT_CHECK) {
            if (sense[SENSE_RESETTING_EVENT_BYTE] &
                SENSE_RESETTING_EVENT_FLAG) {
                  QETH_DBF_TEXT(TRACE, 2, "REVIND");
                  return 1;
            }
            if (sense[SENSE_COMMAND_REJECT_BYTE] &
                SENSE_COMMAND_REJECT_FLAG) {
                  QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
                  return 1;
            }
            if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
                  QETH_DBF_TEXT(TRACE, 2, "AFFE");
                  return 1;
            }
            if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
                  QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
                  return 0;
            }
            QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
                  return 1;
      }
      return 0;
}

static long __qeth_check_irb_error(struct ccw_device *cdev,
            unsigned long intparm, struct irb *irb)
{
      if (!IS_ERR(irb))
            return 0;

      switch (PTR_ERR(irb)) {
      case -EIO:
            QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
                  dev_name(&cdev->dev));
            QETH_DBF_TEXT(TRACE, 2, "ckirberr");
            QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
            break;
      case -ETIMEDOUT:
            dev_warn(&cdev->dev, "A hardware operation timed out"
                  " on the device\n");
            QETH_DBF_TEXT(TRACE, 2, "ckirberr");
            QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
            if (intparm == QETH_RCD_PARM) {
                  struct qeth_card *card = CARD_FROM_CDEV(cdev);

                  if (card && (card->data.ccwdev == cdev)) {
                        card->data.state = CH_STATE_DOWN;
                        wake_up(&card->wait_q);
                  }
            }
            break;
      default:
            QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
                  dev_name(&cdev->dev), PTR_ERR(irb));
            QETH_DBF_TEXT(TRACE, 2, "ckirberr");
            QETH_DBF_TEXT(TRACE, 2, "  rc???");
      }
      return PTR_ERR(irb);
}

static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
            struct irb *irb)
{
      int rc;
      int cstat, dstat;
      struct qeth_cmd_buffer *buffer;
      struct qeth_channel *channel;
      struct qeth_card *card;
      struct qeth_cmd_buffer *iob;
      __u8 index;

      QETH_DBF_TEXT(TRACE, 5, "irq");

      if (__qeth_check_irb_error(cdev, intparm, irb))
            return;
      cstat = irb->scsw.cmd.cstat;
      dstat = irb->scsw.cmd.dstat;

      card = CARD_FROM_CDEV(cdev);
      if (!card)
            return;

      if (card->read.ccwdev == cdev) {
            channel = &card->read;
            QETH_DBF_TEXT(TRACE, 5, "read");
      } else if (card->write.ccwdev == cdev) {
            channel = &card->write;
            QETH_DBF_TEXT(TRACE, 5, "write");
      } else {
            channel = &card->data;
            QETH_DBF_TEXT(TRACE, 5, "data");
      }
      atomic_set(&channel->irq_pending, 0);

      if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
            channel->state = CH_STATE_STOPPED;

      if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
            channel->state = CH_STATE_HALTED;

      /*let's wake up immediately on data channel*/
      if ((channel == &card->data) && (intparm != 0) &&
          (intparm != QETH_RCD_PARM))
            goto out;

      if (intparm == QETH_CLEAR_CHANNEL_PARM) {
            QETH_DBF_TEXT(TRACE, 6, "clrchpar");
            /* we don't have to handle this further */
            intparm = 0;
      }
      if (intparm == QETH_HALT_CHANNEL_PARM) {
            QETH_DBF_TEXT(TRACE, 6, "hltchpar");
            /* we don't have to handle this further */
            intparm = 0;
      }
      if ((dstat & DEV_STAT_UNIT_EXCEP) ||
          (dstat & DEV_STAT_UNIT_CHECK) ||
          (cstat)) {
            if (irb->esw.esw0.erw.cons) {
                  dev_warn(&channel->ccwdev->dev,
                        "The qeth device driver failed to recover "
                        "an error on the device\n");
                  QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
                        "0x%X dstat 0x%X\n",
                        dev_name(&channel->ccwdev->dev), cstat, dstat);
                  print_hex_dump(KERN_WARNING, "qeth: irb ",
                        DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
                  print_hex_dump(KERN_WARNING, "qeth: sense data ",
                        DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
            }
            if (intparm == QETH_RCD_PARM) {
                  channel->state = CH_STATE_DOWN;
                  goto out;
            }
            rc = qeth_get_problem(cdev, irb);
            if (rc) {
                  qeth_clear_ipacmd_list(card);
                  qeth_schedule_recovery(card);
                  goto out;
            }
      }

      if (intparm == QETH_RCD_PARM) {
            channel->state = CH_STATE_RCD_DONE;
            goto out;
      }
      if (intparm) {
            buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
            buffer->state = BUF_STATE_PROCESSED;
      }
      if (channel == &card->data)
            return;
      if (channel == &card->read &&
          channel->state == CH_STATE_UP)
            qeth_issue_next_read(card);

      iob = channel->iob;
      index = channel->buf_no;
      while (iob[index].state == BUF_STATE_PROCESSED) {
            if (iob[index].callback != NULL)
                  iob[index].callback(channel, iob + index);

            index = (index + 1) % QETH_CMD_BUFFER_NO;
      }
      channel->buf_no = index;
out:
      wake_up(&card->wait_q);
      return;
}

static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
             struct qeth_qdio_out_buffer *buf)
{
      int i;
      struct sk_buff *skb;

      /* is PCI flag set on buffer? */
      if (buf->buffer->element[0].flags & 0x40)
            atomic_dec(&queue->set_pci_flags_count);

      skb = skb_dequeue(&buf->skb_list);
      while (skb) {
            atomic_dec(&skb->users);
            dev_kfree_skb_any(skb);
            skb = skb_dequeue(&buf->skb_list);
      }
      for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
            if (buf->buffer->element[i].addr && buf->is_header[i])
                  kmem_cache_free(qeth_core_header_cache,
                        buf->buffer->element[i].addr);
            buf->is_header[i] = 0;
            buf->buffer->element[i].length = 0;
            buf->buffer->element[i].addr = NULL;
            buf->buffer->element[i].flags = 0;
      }
      buf->buffer->element[15].flags = 0;
      buf->next_element_to_fill = 0;
      atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
}

void qeth_clear_qdio_buffers(struct qeth_card *card)
{
      int i, j;

      QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
      /* clear outbound buffers to free skbs */
      for (i = 0; i < card->qdio.no_out_queues; ++i)
            if (card->qdio.out_qs[i]) {
                  for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
                        qeth_clear_output_buffer(card->qdio.out_qs[i],
                                    &card->qdio.out_qs[i]->bufs[j]);
            }
}
EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);

static void qeth_free_buffer_pool(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *pool_entry, *tmp;
      int i = 0;
      QETH_DBF_TEXT(TRACE, 5, "freepool");
      list_for_each_entry_safe(pool_entry, tmp,
                         &card->qdio.init_pool.entry_list, init_list){
            for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
                  free_page((unsigned long)pool_entry->elements[i]);
            list_del(&pool_entry->init_list);
            kfree(pool_entry);
      }
}

static void qeth_free_qdio_buffers(struct qeth_card *card)
{
      int i, j;

      QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
      if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
            QETH_QDIO_UNINITIALIZED)
            return;
      kfree(card->qdio.in_q);
      card->qdio.in_q = NULL;
      /* inbound buffer pool */
      qeth_free_buffer_pool(card);
      /* free outbound qdio_qs */
      if (card->qdio.out_qs) {
            for (i = 0; i < card->qdio.no_out_queues; ++i) {
                  for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
                        qeth_clear_output_buffer(card->qdio.out_qs[i],
                                    &card->qdio.out_qs[i]->bufs[j]);
                  kfree(card->qdio.out_qs[i]);
            }
            kfree(card->qdio.out_qs);
            card->qdio.out_qs = NULL;
      }
}

static void qeth_clean_channel(struct qeth_channel *channel)
{
      int cnt;

      QETH_DBF_TEXT(SETUP, 2, "freech");
      for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
            kfree(channel->iob[cnt].data);
}

static int qeth_is_1920_device(struct qeth_card *card)
{
      int single_queue = 0;
      struct ccw_device *ccwdev;
      struct channelPath_dsc {
            u8 flags;
            u8 lsn;
            u8 desc;
            u8 chpid;
            u8 swla;
            u8 zeroes;
            u8 chla;
            u8 chpp;
      } *chp_dsc;

      QETH_DBF_TEXT(SETUP, 2, "chk_1920");

      ccwdev = card->data.ccwdev;
      chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
      if (chp_dsc != NULL) {
            /* CHPP field bit 6 == 1 -> single queue */
            single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
            kfree(chp_dsc);
      }
      QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
      return single_queue;
}

static void qeth_init_qdio_info(struct qeth_card *card)
{
      QETH_DBF_TEXT(SETUP, 4, "intqdinf");
      atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
      /* inbound */
      card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
      card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
      card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
      INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
      INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
}

static void qeth_set_intial_options(struct qeth_card *card)
{
      card->options.route4.type = NO_ROUTER;
      card->options.route6.type = NO_ROUTER;
      card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
      card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
      card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
      card->options.fake_broadcast = 0;
      card->options.add_hhlen = DEFAULT_ADD_HHLEN;
      card->options.performance_stats = 0;
      card->options.rx_sg_cb = QETH_RX_SG_CB;
}

static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
{
      unsigned long flags;
      int rc = 0;

      spin_lock_irqsave(&card->thread_mask_lock, flags);
      QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
                  (u8) card->thread_start_mask,
                  (u8) card->thread_allowed_mask,
                  (u8) card->thread_running_mask);
      rc = (card->thread_start_mask & thread);
      spin_unlock_irqrestore(&card->thread_mask_lock, flags);
      return rc;
}

static void qeth_start_kernel_thread(struct work_struct *work)
{
      struct qeth_card *card = container_of(work, struct qeth_card,
                              kernel_thread_starter);
      QETH_DBF_TEXT(TRACE , 2, "strthrd");

      if (card->read.state != CH_STATE_UP &&
          card->write.state != CH_STATE_UP)
            return;
      if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
            kthread_run(card->discipline.recover, (void *) card,
                        "qeth_recover");
}

static int qeth_setup_card(struct qeth_card *card)
{

      QETH_DBF_TEXT(SETUP, 2, "setupcrd");
      QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));

      card->read.state  = CH_STATE_DOWN;
      card->write.state = CH_STATE_DOWN;
      card->data.state  = CH_STATE_DOWN;
      card->state = CARD_STATE_DOWN;
      card->lan_online = 0;
      card->use_hard_stop = 0;
      card->dev = NULL;
      spin_lock_init(&card->vlanlock);
      spin_lock_init(&card->mclock);
      card->vlangrp = NULL;
      spin_lock_init(&card->lock);
      spin_lock_init(&card->ip_lock);
      spin_lock_init(&card->thread_mask_lock);
      card->thread_start_mask = 0;
      card->thread_allowed_mask = 0;
      card->thread_running_mask = 0;
      INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
      INIT_LIST_HEAD(&card->ip_list);
      card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
      if (!card->ip_tbd_list) {
            QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
            return -ENOMEM;
      }
      INIT_LIST_HEAD(card->ip_tbd_list);
      INIT_LIST_HEAD(&card->cmd_waiter_list);
      init_waitqueue_head(&card->wait_q);
      /* intial options */
      qeth_set_intial_options(card);
      /* IP address takeover */
      INIT_LIST_HEAD(&card->ipato.entries);
      card->ipato.enabled = 0;
      card->ipato.invert4 = 0;
      card->ipato.invert6 = 0;
      if (card->info.type == QETH_CARD_TYPE_IQD)
            card->options.checksum_type = NO_CHECKSUMMING;
      /* init QDIO stuff */
      qeth_init_qdio_info(card);
      return 0;
}

static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
{
      struct qeth_card *card = container_of(slr, struct qeth_card,
                              qeth_service_level);
      seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card),
                  card->info.mcl_level);
}

static struct qeth_card *qeth_alloc_card(void)
{
      struct qeth_card *card;

      QETH_DBF_TEXT(SETUP, 2, "alloccrd");
      card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
      if (!card)
            return NULL;
      QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
      if (qeth_setup_channel(&card->read)) {
            kfree(card);
            return NULL;
      }
      if (qeth_setup_channel(&card->write)) {
            qeth_clean_channel(&card->read);
            kfree(card);
            return NULL;
      }
      card->options.layer2 = -1;
      card->qeth_service_level.seq_print = qeth_core_sl_print;
      register_service_level(&card->qeth_service_level);
      return card;
}

static int qeth_determine_card_type(struct qeth_card *card)
{
      int i = 0;

      QETH_DBF_TEXT(SETUP, 2, "detcdtyp");

      card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
      card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
      while (known_devices[i][4]) {
            if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
                (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
                  card->info.type = known_devices[i][4];
                  card->qdio.no_out_queues = known_devices[i][8];
                  card->info.is_multicast_different = known_devices[i][9];
                  if (qeth_is_1920_device(card)) {
                        dev_info(&card->gdev->dev,
                              "Priority Queueing not supported\n");
                        card->qdio.no_out_queues = 1;
                        card->qdio.default_out_queue = 0;
                  }
                  return 0;
            }
            i++;
      }
      card->info.type = QETH_CARD_TYPE_UNKNOWN;
      dev_err(&card->gdev->dev, "The adapter hardware is of an "
            "unknown type\n");
      return -ENOENT;
}

static int qeth_clear_channel(struct qeth_channel *channel)
{
      unsigned long flags;
      struct qeth_card *card;
      int rc;

      QETH_DBF_TEXT(TRACE, 3, "clearch");
      card = CARD_FROM_CDEV(channel->ccwdev);
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc)
            return rc;
      rc = wait_event_interruptible_timeout(card->wait_q,
                  channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_STOPPED)
            return -ETIME;
      channel->state = CH_STATE_DOWN;
      return 0;
}

static int qeth_halt_channel(struct qeth_channel *channel)
{
      unsigned long flags;
      struct qeth_card *card;
      int rc;

      QETH_DBF_TEXT(TRACE, 3, "haltch");
      card = CARD_FROM_CDEV(channel->ccwdev);
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc)
            return rc;
      rc = wait_event_interruptible_timeout(card->wait_q,
                  channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_HALTED)
            return -ETIME;
      return 0;
}

static int qeth_halt_channels(struct qeth_card *card)
{
      int rc1 = 0, rc2 = 0, rc3 = 0;

      QETH_DBF_TEXT(TRACE, 3, "haltchs");
      rc1 = qeth_halt_channel(&card->read);
      rc2 = qeth_halt_channel(&card->write);
      rc3 = qeth_halt_channel(&card->data);
      if (rc1)
            return rc1;
      if (rc2)
            return rc2;
      return rc3;
}

static int qeth_clear_channels(struct qeth_card *card)
{
      int rc1 = 0, rc2 = 0, rc3 = 0;

      QETH_DBF_TEXT(TRACE, 3, "clearchs");
      rc1 = qeth_clear_channel(&card->read);
      rc2 = qeth_clear_channel(&card->write);
      rc3 = qeth_clear_channel(&card->data);
      if (rc1)
            return rc1;
      if (rc2)
            return rc2;
      return rc3;
}

static int qeth_clear_halt_card(struct qeth_card *card, int halt)
{
      int rc = 0;

      QETH_DBF_TEXT(TRACE, 3, "clhacrd");
      QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));

      if (halt)
            rc = qeth_halt_channels(card);
      if (rc)
            return rc;
      return qeth_clear_channels(card);
}

int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
{
      int rc = 0;

      QETH_DBF_TEXT(TRACE, 3, "qdioclr");
      switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
            QETH_QDIO_CLEANING)) {
      case QETH_QDIO_ESTABLISHED:
            if (card->info.type == QETH_CARD_TYPE_IQD)
                  rc = qdio_cleanup(CARD_DDEV(card),
                        QDIO_FLAG_CLEANUP_USING_HALT);
            else
                  rc = qdio_cleanup(CARD_DDEV(card),
                        QDIO_FLAG_CLEANUP_USING_CLEAR);
            if (rc)
                  QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
            atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
            break;
      case QETH_QDIO_CLEANING:
            return rc;
      default:
            break;
      }
      rc = qeth_clear_halt_card(card, use_halt);
      if (rc)
            QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
      card->state = CARD_STATE_DOWN;
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);

static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
                         int *length)
{
      struct ciw *ciw;
      char *rcd_buf;
      int ret;
      struct qeth_channel *channel = &card->data;
      unsigned long flags;

      /*
       * scan for RCD command in extended SenseID data
       */
      ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
      if (!ciw || ciw->cmd == 0)
            return -EOPNOTSUPP;
      rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
      if (!rcd_buf)
            return -ENOMEM;

      channel->ccw.cmd_code = ciw->cmd;
      channel->ccw.cda = (__u32) __pa(rcd_buf);
      channel->ccw.count = ciw->count;
      channel->ccw.flags = CCW_FLAG_SLI;
      channel->state = CH_STATE_RCD;
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
                               QETH_RCD_PARM, LPM_ANYPATH, 0,
                               QETH_RCD_TIMEOUT);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
      if (!ret)
            wait_event(card->wait_q,
                     (channel->state == CH_STATE_RCD_DONE ||
                      channel->state == CH_STATE_DOWN));
      if (channel->state == CH_STATE_DOWN)
            ret = -EIO;
      else
            channel->state = CH_STATE_DOWN;
      if (ret) {
            kfree(rcd_buf);
            *buffer = NULL;
            *length = 0;
      } else {
            *length = ciw->count;
            *buffer = rcd_buf;
      }
      return ret;
}

static int qeth_get_unitaddr(struct qeth_card *card)
{
      int length;
      char *prcd;
      int rc;

      QETH_DBF_TEXT(SETUP, 2, "getunit");
      rc = qeth_read_conf_data(card, (void **) &prcd, &length);
      if (rc) {
            QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
                  dev_name(&card->gdev->dev), rc);
            return rc;
      }
      card->info.chpid = prcd[30];
      card->info.unit_addr2 = prcd[31];
      card->info.cula = prcd[63];
      card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
                         (prcd[0x11] == _ascebc['M']));
      kfree(prcd);
      return 0;
}

static void qeth_init_tokens(struct qeth_card *card)
{
      card->token.issuer_rm_w = 0x00010103UL;
      card->token.cm_filter_w = 0x00010108UL;
      card->token.cm_connection_w = 0x0001010aUL;
      card->token.ulp_filter_w = 0x0001010bUL;
      card->token.ulp_connection_w = 0x0001010dUL;
}

static void qeth_init_func_level(struct qeth_card *card)
{
      if (card->ipato.enabled) {
            if (card->info.type == QETH_CARD_TYPE_IQD)
                        card->info.func_level =
                              QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
            else
                        card->info.func_level =
                              QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
      } else {
            if (card->info.type == QETH_CARD_TYPE_IQD)
            /*FIXME:why do we have same values for  dis and ena for
              osae??? */
                  card->info.func_level =
                        QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
            else
                  card->info.func_level =
                        QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
      }
}

static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
            void (*idx_reply_cb)(struct qeth_channel *,
                  struct qeth_cmd_buffer *))
{
      struct qeth_cmd_buffer *iob;
      unsigned long flags;
      int rc;
      struct qeth_card *card;

      QETH_DBF_TEXT(SETUP, 2, "idxanswr");
      card = CARD_FROM_CDEV(channel->ccwdev);
      iob = qeth_get_buffer(channel);
      iob->callback = idx_reply_cb;
      memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
      channel->ccw.count = QETH_BUFSIZE;
      channel->ccw.cda = (__u32) __pa(iob->data);

      wait_event(card->wait_q,
               atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
      QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_start(channel->ccwdev,
                        &channel->ccw, (addr_t) iob, 0, 0);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc) {
            QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
            QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
            atomic_set(&channel->irq_pending, 0);
            wake_up(&card->wait_q);
            return rc;
      }
      rc = wait_event_interruptible_timeout(card->wait_q,
                   channel->state == CH_STATE_UP, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_UP) {
            rc = -ETIME;
            QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
            qeth_clear_cmd_buffers(channel);
      } else
            rc = 0;
      return rc;
}

static int qeth_idx_activate_channel(struct qeth_channel *channel,
            void (*idx_reply_cb)(struct qeth_channel *,
                  struct qeth_cmd_buffer *))
{
      struct qeth_card *card;
      struct qeth_cmd_buffer *iob;
      unsigned long flags;
      __u16 temp;
      __u8 tmp;
      int rc;
      struct ccw_dev_id temp_devid;

      card = CARD_FROM_CDEV(channel->ccwdev);

      QETH_DBF_TEXT(SETUP, 2, "idxactch");

      iob = qeth_get_buffer(channel);
      iob->callback = idx_reply_cb;
      memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
      channel->ccw.count = IDX_ACTIVATE_SIZE;
      channel->ccw.cda = (__u32) __pa(iob->data);
      if (channel == &card->write) {
            memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
            memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
                   &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
            card->seqno.trans_hdr++;
      } else {
            memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
            memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
                   &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
      }
      tmp = ((__u8)card->info.portno) | 0x80;
      memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
      memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
             &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
             &card->info.func_level, sizeof(__u16));
      ccw_device_get_id(CARD_DDEV(card), &temp_devid);
      memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
      temp = (card->info.cula << 8) + card->info.unit_addr2;
      memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);

      wait_event(card->wait_q,
               atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
      QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
      spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
      rc = ccw_device_start(channel->ccwdev,
                        &channel->ccw, (addr_t) iob, 0, 0);
      spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

      if (rc) {
            QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
                  rc);
            QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
            atomic_set(&channel->irq_pending, 0);
            wake_up(&card->wait_q);
            return rc;
      }
      rc = wait_event_interruptible_timeout(card->wait_q,
                  channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
      if (rc == -ERESTARTSYS)
            return rc;
      if (channel->state != CH_STATE_ACTIVATING) {
            dev_warn(&channel->ccwdev->dev, "The qeth device driver"
                  " failed to recover an error on the device\n");
            QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
                  dev_name(&channel->ccwdev->dev));
            QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
            qeth_clear_cmd_buffers(channel);
            return -ETIME;
      }
      return qeth_idx_activate_get_answer(channel, idx_reply_cb);
}

static int qeth_peer_func_level(int level)
{
      if ((level & 0xff) == 8)
            return (level & 0xff) + 0x400;
      if (((level >> 8) & 3) == 1)
            return (level & 0xff) + 0x200;
      return level;
}

static void qeth_idx_write_cb(struct qeth_channel *channel,
            struct qeth_cmd_buffer *iob)
{
      struct qeth_card *card;
      __u16 temp;

      QETH_DBF_TEXT(SETUP , 2, "idxwrcb");

      if (channel->state == CH_STATE_DOWN) {
            channel->state = CH_STATE_ACTIVATING;
            goto out;
      }
      card = CARD_FROM_CDEV(channel->ccwdev);

      if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
            if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
                  dev_err(&card->write.ccwdev->dev,
                        "The adapter is used exclusively by another "
                        "host\n");
            else
                  QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
                        " negative reply\n",
                        dev_name(&card->write.ccwdev->dev));
            goto out;
      }
      memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
      if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
            QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
                  "function level mismatch (sent: 0x%x, received: "
                  "0x%x)\n", dev_name(&card->write.ccwdev->dev),
                  card->info.func_level, temp);
            goto out;
      }
      channel->state = CH_STATE_UP;
out:
      qeth_release_buffer(channel, iob);
}

static void qeth_idx_read_cb(struct qeth_channel *channel,
            struct qeth_cmd_buffer *iob)
{
      struct qeth_card *card;
      __u16 temp;

      QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
      if (channel->state == CH_STATE_DOWN) {
            channel->state = CH_STATE_ACTIVATING;
            goto out;
      }

      card = CARD_FROM_CDEV(channel->ccwdev);
      if (qeth_check_idx_response(iob->data))
                  goto out;

      if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
            if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
                  dev_err(&card->write.ccwdev->dev,
                        "The adapter is used exclusively by another "
                        "host\n");
            else
                  QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
                        " negative reply\n",
                        dev_name(&card->read.ccwdev->dev));
            goto out;
      }

/**
 * temporary fix for microcode bug
 * to revert it,replace OR by AND
 */
      if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
           (card->info.type == QETH_CARD_TYPE_OSAE))
            card->info.portname_required = 1;

      memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
      if (temp != qeth_peer_func_level(card->info.func_level)) {
            QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
                  "level mismatch (sent: 0x%x, received: 0x%x)\n",
                  dev_name(&card->read.ccwdev->dev),
                  card->info.func_level, temp);
            goto out;
      }
      memcpy(&card->token.issuer_rm_r,
             QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      memcpy(&card->info.mcl_level[0],
             QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
      channel->state = CH_STATE_UP;
out:
      qeth_release_buffer(channel, iob);
}

void qeth_prepare_control_data(struct qeth_card *card, int len,
            struct qeth_cmd_buffer *iob)
{
      qeth_setup_ccw(&card->write, iob->data, len);
      iob->callback = qeth_release_buffer;

      memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
             &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
      card->seqno.trans_hdr++;
      memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
             &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
      card->seqno.pdu_hdr++;
      memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
             &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
      QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
}
EXPORT_SYMBOL_GPL(qeth_prepare_control_data);

int qeth_send_control_data(struct qeth_card *card, int len,
            struct qeth_cmd_buffer *iob,
            int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
                  unsigned long),
            void *reply_param)
{
      int rc;
      unsigned long flags;
      struct qeth_reply *reply = NULL;
      unsigned long timeout, event_timeout;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(TRACE, 2, "sendctl");

      reply = qeth_alloc_reply(card);
      if (!reply) {
            return -ENOMEM;
      }
      reply->callback = reply_cb;
      reply->param = reply_param;
      if (card->state == CARD_STATE_DOWN)
            reply->seqno = QETH_IDX_COMMAND_SEQNO;
      else
            reply->seqno = card->seqno.ipa++;
      init_waitqueue_head(&reply->wait_q);
      spin_lock_irqsave(&card->lock, flags);
      list_add_tail(&reply->list, &card->cmd_waiter_list);
      spin_unlock_irqrestore(&card->lock, flags);
      QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);

      while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
      qeth_prepare_control_data(card, len, iob);

      if (IS_IPA(iob->data))
            event_timeout = QETH_IPA_TIMEOUT;
      else
            event_timeout = QETH_TIMEOUT;
      timeout = jiffies + event_timeout;

      QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
      spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
      rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
                        (addr_t) iob, 0, 0);
      spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
      if (rc) {
            QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
                  "ccw_device_start rc = %i\n",
                  dev_name(&card->write.ccwdev->dev), rc);
            QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
            spin_lock_irqsave(&card->lock, flags);
            list_del_init(&reply->list);
            qeth_put_reply(reply);
            spin_unlock_irqrestore(&card->lock, flags);
            qeth_release_buffer(iob->channel, iob);
            atomic_set(&card->write.irq_pending, 0);
            wake_up(&card->wait_q);
            return rc;
      }

      /* we have only one long running ipassist, since we can ensure
         process context of this command we can sleep */
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      if ((cmd->hdr.command == IPA_CMD_SETIP) &&
          (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
            if (!wait_event_timeout(reply->wait_q,
                atomic_read(&reply->received), event_timeout))
                  goto time_err;
      } else {
            while (!atomic_read(&reply->received)) {
                  if (time_after(jiffies, timeout))
                        goto time_err;
                  cpu_relax();
            };
      }

      rc = reply->rc;
      qeth_put_reply(reply);
      return rc;

time_err:
      spin_lock_irqsave(&reply->card->lock, flags);
      list_del_init(&reply->list);
      spin_unlock_irqrestore(&reply->card->lock, flags);
      reply->rc = -ETIME;
      atomic_inc(&reply->received);
      wake_up(&reply->wait_q);
      rc = reply->rc;
      qeth_put_reply(reply);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_control_data);

static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
            unsigned long data)
{
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(SETUP, 2, "cmenblcb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.cm_filter_r,
             QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
      return 0;
}

static int qeth_cm_enable(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(SETUP, 2, "cmenable");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
      memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
             &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
             &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);

      rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
                            qeth_cm_enable_cb, NULL);
      return rc;
}

static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
            unsigned long data)
{

      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.cm_connection_r,
             QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
      return 0;
}

static int qeth_cm_setup(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(SETUP, 2, "cmsetup");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
      memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
             &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
             &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
             &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
      rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
                            qeth_cm_setup_cb, NULL);
      return rc;

}

static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_UNKNOWN:
            return 1500;
      case QETH_CARD_TYPE_IQD:
            return card->info.max_mtu;
      case QETH_CARD_TYPE_OSAE:
            switch (card->info.link_type) {
            case QETH_LINK_TYPE_HSTR:
            case QETH_LINK_TYPE_LANE_TR:
                  return 2000;
            default:
                  return 1492;
            }
      default:
            return 1500;
      }
}

static inline int qeth_get_max_mtu_for_card(int cardtype)
{
      switch (cardtype) {

      case QETH_CARD_TYPE_UNKNOWN:
      case QETH_CARD_TYPE_OSAE:
      case QETH_CARD_TYPE_OSN:
            return 61440;
      case QETH_CARD_TYPE_IQD:
            return 57344;
      default:
            return 1500;
      }
}

static inline int qeth_get_mtu_out_of_mpc(int cardtype)
{
      switch (cardtype) {
      case QETH_CARD_TYPE_IQD:
            return 1;
      default:
            return 0;
      }
}

static inline int qeth_get_mtu_outof_framesize(int framesize)
{
      switch (framesize) {
      case 0x4000:
            return 8192;
      case 0x6000:
            return 16384;
      case 0xa000:
            return 32768;
      case 0xffff:
            return 57344;
      default:
            return 0;
      }
}

static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_OSAE:
            return ((mtu >= 576) && (mtu <= 61440));
      case QETH_CARD_TYPE_IQD:
            return ((mtu >= 576) &&
                  (mtu <= card->info.max_mtu + 4096 - 32));
      case QETH_CARD_TYPE_OSN:
      case QETH_CARD_TYPE_UNKNOWN:
      default:
            return 1;
      }
}

static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
            unsigned long data)
{

      __u16 mtu, framesize;
      __u16 len;
      __u8 link_type;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(SETUP, 2, "ulpenacb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.ulp_filter_r,
             QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      if (qeth_get_mtu_out_of_mpc(card->info.type)) {
            memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
            mtu = qeth_get_mtu_outof_framesize(framesize);
            if (!mtu) {
                  iob->rc = -EINVAL;
                  QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
                  return 0;
            }
            card->info.max_mtu = mtu;
            card->info.initial_mtu = mtu;
            card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
      } else {
            card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
            card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
            card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
      }

      memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
      if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
            memcpy(&link_type,
                   QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
            card->info.link_type = link_type;
      } else
            card->info.link_type = 0;
      QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
      return 0;
}

static int qeth_ulp_enable(struct qeth_card *card)
{
      int rc;
      char prot_type;
      struct qeth_cmd_buffer *iob;

      /*FIXME: trace view callbacks*/
      QETH_DBF_TEXT(SETUP, 2, "ulpenabl");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);

      *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
            (__u8) card->info.portno;
      if (card->options.layer2)
            if (card->info.type == QETH_CARD_TYPE_OSN)
                  prot_type = QETH_PROT_OSN2;
            else
                  prot_type = QETH_PROT_LAYER2;
      else
            prot_type = QETH_PROT_TCPIP;

      memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
      memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
             &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
             &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
             card->info.portname, 9);
      rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
                            qeth_ulp_enable_cb, NULL);
      return rc;

}

static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
            unsigned long data)
{
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");

      iob = (struct qeth_cmd_buffer *) data;
      memcpy(&card->token.ulp_connection_r,
             QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
             QETH_MPC_TOKEN_LENGTH);
      QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
      return 0;
}

static int qeth_ulp_setup(struct qeth_card *card)
{
      int rc;
      __u16 temp;
      struct qeth_cmd_buffer *iob;
      struct ccw_dev_id dev_id;

      QETH_DBF_TEXT(SETUP, 2, "ulpsetup");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);

      memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
             &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
             &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
             &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);

      ccw_device_get_id(CARD_DDEV(card), &dev_id);
      memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
      temp = (card->info.cula << 8) + card->info.unit_addr2;
      memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
      rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
                            qeth_ulp_setup_cb, NULL);
      return rc;
}

static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
      int i, j;

      QETH_DBF_TEXT(SETUP, 2, "allcqdbf");

      if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
            QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
            return 0;

      card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
                          GFP_KERNEL);
      if (!card->qdio.in_q)
            goto out_nomem;
      QETH_DBF_TEXT(SETUP, 2, "inq");
      QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
      memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
      /* give inbound qeth_qdio_buffers their qdio_buffers */
      for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
            card->qdio.in_q->bufs[i].buffer =
                  &card->qdio.in_q->qdio_bufs[i];
      /* inbound buffer pool */
      if (qeth_alloc_buffer_pool(card))
            goto out_freeinq;
      /* outbound */
      card->qdio.out_qs =
            kmalloc(card->qdio.no_out_queues *
                  sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
      if (!card->qdio.out_qs)
            goto out_freepool;
      for (i = 0; i < card->qdio.no_out_queues; ++i) {
            card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
                                     GFP_KERNEL);
            if (!card->qdio.out_qs[i])
                  goto out_freeoutq;
            QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
            QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
            memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
            card->qdio.out_qs[i]->queue_no = i;
            /* give outbound qeth_qdio_buffers their qdio_buffers */
            for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
                  card->qdio.out_qs[i]->bufs[j].buffer =
                        &card->qdio.out_qs[i]->qdio_bufs[j];
                  skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
                                  skb_list);
                  lockdep_set_class(
                        &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
                        &qdio_out_skb_queue_key);
                  INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
            }
      }
      return 0;

out_freeoutq:
      while (i > 0)
            kfree(card->qdio.out_qs[--i]);
      kfree(card->qdio.out_qs);
      card->qdio.out_qs = NULL;
out_freepool:
      qeth_free_buffer_pool(card);
out_freeinq:
      kfree(card->qdio.in_q);
      card->qdio.in_q = NULL;
out_nomem:
      atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
      return -ENOMEM;
}

static void qeth_create_qib_param_field(struct qeth_card *card,
            char *param_field)
{

      param_field[0] = _ascebc['P'];
      param_field[1] = _ascebc['C'];
      param_field[2] = _ascebc['I'];
      param_field[3] = _ascebc['T'];
      *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
      *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
      *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
}

static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
            char *param_field)
{
      param_field[16] = _ascebc['B'];
      param_field[17] = _ascebc['L'];
      param_field[18] = _ascebc['K'];
      param_field[19] = _ascebc['T'];
      *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
      *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
      *((unsigned int *) (&param_field[28])) =
            card->info.blkt.inter_packet_jumbo;
}

static int qeth_qdio_activate(struct qeth_card *card)
{
      QETH_DBF_TEXT(SETUP, 3, "qdioact");
      return qdio_activate(CARD_DDEV(card));
}

static int qeth_dm_act(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(SETUP, 2, "dmact");

      iob = qeth_wait_for_buffer(&card->write);
      memcpy(iob->data, DM_ACT, DM_ACT_SIZE);

      memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
             &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
      memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
             &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
      rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
      return rc;
}

static int qeth_mpc_initialize(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(SETUP, 2, "mpcinit");

      rc = qeth_issue_next_read(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
            return rc;
      }
      rc = qeth_cm_enable(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
            goto out_qdio;
      }
      rc = qeth_cm_setup(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
            goto out_qdio;
      }
      rc = qeth_ulp_enable(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
            goto out_qdio;
      }
      rc = qeth_ulp_setup(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
            goto out_qdio;
      }
      rc = qeth_alloc_qdio_buffers(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
            goto out_qdio;
      }
      rc = qeth_qdio_establish(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
            qeth_free_qdio_buffers(card);
            goto out_qdio;
      }
      rc = qeth_qdio_activate(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
            goto out_qdio;
      }
      rc = qeth_dm_act(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
            goto out_qdio;
      }

      return 0;
out_qdio:
      qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
      return rc;
}

static void qeth_print_status_with_portname(struct qeth_card *card)
{
      char dbf_text[15];
      int i;

      sprintf(dbf_text, "%s", card->info.portname + 1);
      for (i = 0; i < 8; i++)
            dbf_text[i] =
                  (char) _ebcasc[(__u8) dbf_text[i]];
      dbf_text[8] = 0;
      dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
             "with link type %s (portname: %s)\n",
             qeth_get_cardname(card),
             (card->info.mcl_level[0]) ? " (level: " : "",
             (card->info.mcl_level[0]) ? card->info.mcl_level : "",
             (card->info.mcl_level[0]) ? ")" : "",
             qeth_get_cardname_short(card),
             dbf_text);

}

static void qeth_print_status_no_portname(struct qeth_card *card)
{
      if (card->info.portname[0])
            dev_info(&card->gdev->dev, "Device is a%s "
                   "card%s%s%s\nwith link type %s "
                   "(no portname needed by interface).\n",
                   qeth_get_cardname(card),
                   (card->info.mcl_level[0]) ? " (level: " : "",
                   (card->info.mcl_level[0]) ? card->info.mcl_level : "",
                   (card->info.mcl_level[0]) ? ")" : "",
                   qeth_get_cardname_short(card));
      else
            dev_info(&card->gdev->dev, "Device is a%s "
                   "card%s%s%s\nwith link type %s.\n",
                   qeth_get_cardname(card),
                   (card->info.mcl_level[0]) ? " (level: " : "",
                   (card->info.mcl_level[0]) ? card->info.mcl_level : "",
                   (card->info.mcl_level[0]) ? ")" : "",
                   qeth_get_cardname_short(card));
}

void qeth_print_status_message(struct qeth_card *card)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_OSAE:
            /* VM will use a non-zero first character
             * to indicate a HiperSockets like reporting
             * of the level OSA sets the first character to zero
             * */
            if (!card->info.mcl_level[0]) {
                  sprintf(card->info.mcl_level, "%02x%02x",
                        card->info.mcl_level[2],
                        card->info.mcl_level[3]);

                  card->info.mcl_level[QETH_MCL_LENGTH] = 0;
                  break;
            }
            /* fallthrough */
      case QETH_CARD_TYPE_IQD:
            if ((card->info.guestlan) ||
                (card->info.mcl_level[0] & 0x80)) {
                  card->info.mcl_level[0] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[0]];
                  card->info.mcl_level[1] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[1]];
                  card->info.mcl_level[2] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[2]];
                  card->info.mcl_level[3] = (char) _ebcasc[(__u8)
                        card->info.mcl_level[3]];
                  card->info.mcl_level[QETH_MCL_LENGTH] = 0;
            }
            break;
      default:
            memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
      }
      if (card->info.portname_required)
            qeth_print_status_with_portname(card);
      else
            qeth_print_status_no_portname(card);
}
EXPORT_SYMBOL_GPL(qeth_print_status_message);

static void qeth_initialize_working_pool_list(struct qeth_card *card)
{
      struct qeth_buffer_pool_entry *entry;

      QETH_DBF_TEXT(TRACE, 5, "inwrklst");

      list_for_each_entry(entry,
                      &card->qdio.init_pool.entry_list, init_list) {
            qeth_put_buffer_pool_entry(card, entry);
      }
}

static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
            struct qeth_card *card)
{
      struct list_head *plh;
      struct qeth_buffer_pool_entry *entry;
      int i, free;
      struct page *page;

      if (list_empty(&card->qdio.in_buf_pool.entry_list))
            return NULL;

      list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
            entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
            free = 1;
            for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
                  if (page_count(virt_to_page(entry->elements[i])) > 1) {
                        free = 0;
                        break;
                  }
            }
            if (free) {
                  list_del_init(&entry->list);
                  return entry;
            }
      }

      /* no free buffer in pool so take first one and swap pages */
      entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
                  struct qeth_buffer_pool_entry, list);
      for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
            if (page_count(virt_to_page(entry->elements[i])) > 1) {
                  page = alloc_page(GFP_ATOMIC);
                  if (!page) {
                        return NULL;
                  } else {
                        free_page((unsigned long)entry->elements[i]);
                        entry->elements[i] = page_address(page);
                        if (card->options.performance_stats)
                              card->perf_stats.sg_alloc_page_rx++;
                  }
            }
      }
      list_del_init(&entry->list);
      return entry;
}

static int qeth_init_input_buffer(struct qeth_card *card,
            struct qeth_qdio_buffer *buf)
{
      struct qeth_buffer_pool_entry *pool_entry;
      int i;

      pool_entry = qeth_find_free_buffer_pool_entry(card);
      if (!pool_entry)
            return 1;

      /*
       * since the buffer is accessed only from the input_tasklet
       * there shouldn't be a need to synchronize; also, since we use
       * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
       * buffers
       */

      buf->pool_entry = pool_entry;
      for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
            buf->buffer->element[i].length = PAGE_SIZE;
            buf->buffer->element[i].addr =  pool_entry->elements[i];
            if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
                  buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
            else
                  buf->buffer->element[i].flags = 0;
      }
      return 0;
}

int qeth_init_qdio_queues(struct qeth_card *card)
{
      int i, j;
      int rc;

      QETH_DBF_TEXT(SETUP, 2, "initqdqs");

      /* inbound queue */
      memset(card->qdio.in_q->qdio_bufs, 0,
             QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
      qeth_initialize_working_pool_list(card);
      /*give only as many buffers to hardware as we have buffer pool entries*/
      for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
            qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
      card->qdio.in_q->next_buf_to_init =
            card->qdio.in_buf_pool.buf_count - 1;
      rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
                 card->qdio.in_buf_pool.buf_count - 1);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
            return rc;
      }
      /* outbound queue */
      for (i = 0; i < card->qdio.no_out_queues; ++i) {
            memset(card->qdio.out_qs[i]->qdio_bufs, 0,
                   QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
            for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
                  qeth_clear_output_buffer(card->qdio.out_qs[i],
                              &card->qdio.out_qs[i]->bufs[j]);
            }
            card->qdio.out_qs[i]->card = card;
            card->qdio.out_qs[i]->next_buf_to_fill = 0;
            card->qdio.out_qs[i]->do_pack = 0;
            atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
            atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
            atomic_set(&card->qdio.out_qs[i]->state,
                     QETH_OUT_Q_UNLOCKED);
      }
      return 0;
}
EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);

static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
{
      switch (link_type) {
      case QETH_LINK_TYPE_HSTR:
            return 2;
      default:
            return 1;
      }
}

static void qeth_fill_ipacmd_header(struct qeth_card *card,
            struct qeth_ipa_cmd *cmd, __u8 command,
            enum qeth_prot_versions prot)
{
      memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
      cmd->hdr.command = command;
      cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
      cmd->hdr.seqno = card->seqno.ipa;
      cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
      cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
      if (card->options.layer2)
            cmd->hdr.prim_version_no = 2;
      else
            cmd->hdr.prim_version_no = 1;
      cmd->hdr.param_count = 1;
      cmd->hdr.prot_version = prot;
      cmd->hdr.ipa_supported = 0;
      cmd->hdr.ipa_enabled = 0;
}

struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
            enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      iob = qeth_wait_for_buffer(&card->write);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);

      return iob;
}
EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);

void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
            char prot_type)
{
      memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
      memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
      memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
             &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
}
EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);

int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
            int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
                  unsigned long),
            void *reply_param)
{
      int rc;
      char prot_type;

      QETH_DBF_TEXT(TRACE, 4, "sendipa");

      if (card->options.layer2)
            if (card->info.type == QETH_CARD_TYPE_OSN)
                  prot_type = QETH_PROT_OSN2;
            else
                  prot_type = QETH_PROT_LAYER2;
      else
            prot_type = QETH_PROT_TCPIP;
      qeth_prepare_ipa_cmd(card, iob, prot_type);
      rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
                                    iob, reply_cb, reply_param);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);

static int qeth_send_startstoplan(struct qeth_card *card,
            enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
      rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

      return rc;
}

int qeth_send_startlan(struct qeth_card *card)
{
      int rc;

      QETH_DBF_TEXT(SETUP, 2, "strtlan");

      rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_startlan);

int qeth_send_stoplan(struct qeth_card *card)
{
      int rc = 0;

      /*
       * TODO: according to the IPA format document page 14,
       * TCP/IP (we!) never issue a STOPLAN
       * is this right ?!?
       */
      QETH_DBF_TEXT(SETUP, 2, "stoplan");

      rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_stoplan);

int qeth_default_setadapterparms_cb(struct qeth_card *card,
            struct qeth_reply *reply, unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(TRACE, 4, "defadpcb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->hdr.return_code == 0)
            cmd->hdr.return_code =
                  cmd->data.setadapterparms.hdr.return_code;
      return 0;
}
EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);

static int qeth_query_setadapterparms_cb(struct qeth_card *card,
            struct qeth_reply *reply, unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(TRACE, 3, "quyadpcb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
            card->info.link_type =
                  cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
      card->options.adp.supported_funcs =
            cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
      return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
}

struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
            __u32 command, __u32 cmdlen)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
                             QETH_PROT_IPV4);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
      cmd->data.setadapterparms.hdr.command_code = command;
      cmd->data.setadapterparms.hdr.used_total = 1;
      cmd->data.setadapterparms.hdr.seq_no = 1;

      return iob;
}
EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);

int qeth_query_setadapterparms(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;

      QETH_DBF_TEXT(TRACE, 3, "queryadp");
      iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
                           sizeof(struct qeth_ipacmd_setadpparms));
      rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);

int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
            const char *dbftext)
{
      if (qdio_error) {
            QETH_DBF_TEXT(TRACE, 2, dbftext);
            QETH_DBF_TEXT(QERR, 2, dbftext);
            QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
                         buf->element[15].flags & 0xff);
            QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
                         buf->element[14].flags & 0xff);
            QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
            return 1;
      }
      return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);

void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
      struct qeth_qdio_q *queue = card->qdio.in_q;
      int count;
      int i;
      int rc;
      int newcount = 0;

      count = (index < queue->next_buf_to_init)?
            card->qdio.in_buf_pool.buf_count -
            (queue->next_buf_to_init - index) :
            card->qdio.in_buf_pool.buf_count -
            (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
      /* only requeue at a certain threshold to avoid SIGAs */
      if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
            for (i = queue->next_buf_to_init;
                 i < queue->next_buf_to_init + count; ++i) {
                  if (qeth_init_input_buffer(card,
                        &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
                        break;
                  } else {
                        newcount++;
                  }
            }

            if (newcount < count) {
                  /* we are in memory shortage so we switch back to
                     traditional skb allocation and drop packages */
                  atomic_set(&card->force_alloc_skb, 3);
                  count = newcount;
            } else {
                  atomic_add_unless(&card->force_alloc_skb, -1, 0);
            }

            /*
             * according to old code it should be avoided to requeue all
             * 128 buffers in order to benefit from PCI avoidance.
             * this function keeps at least one buffer (the buffer at
             * 'index') un-requeued -> this buffer is the first buffer that
             * will be requeued the next time
             */
            if (card->options.performance_stats) {
                  card->perf_stats.inbound_do_qdio_cnt++;
                  card->perf_stats.inbound_do_qdio_start_time =
                        qeth_get_micros();
            }
            rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
                       queue->next_buf_to_init, count);
            if (card->options.performance_stats)
                  card->perf_stats.inbound_do_qdio_time +=
                        qeth_get_micros() -
                        card->perf_stats.inbound_do_qdio_start_time;
            if (rc) {
                  dev_warn(&card->gdev->dev,
                        "QDIO reported an error, rc=%i\n", rc);
                  QETH_DBF_TEXT(TRACE, 2, "qinberr");
                  QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
            }
            queue->next_buf_to_init = (queue->next_buf_to_init + count) %
                                QDIO_MAX_BUFFERS_PER_Q;
      }
}
EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);

static int qeth_handle_send_error(struct qeth_card *card,
            struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
{
      int sbalf15 = buffer->buffer->element[15].flags & 0xff;

      QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
      qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");

      if (!qdio_err)
            return QETH_SEND_ERROR_NONE;

      if ((sbalf15 >= 15) && (sbalf15 <= 31))
            return QETH_SEND_ERROR_RETRY;

      QETH_DBF_TEXT(TRACE, 1, "lnkfail");
      QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
      QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
                   (u16)qdio_err, (u8)sbalf15);
      return QETH_SEND_ERROR_LINK_FAILURE;
}

/*
 * Switched to packing state if the number of used buffers on a queue
 * reaches a certain limit.
 */
static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
{
      if (!queue->do_pack) {
            if (atomic_read(&queue->used_buffers)
                >= QETH_HIGH_WATERMARK_PACK){
                  /* switch non-PACKING -> PACKING */
                  QETH_DBF_TEXT(TRACE, 6, "np->pack");
                  if (queue->card->options.performance_stats)
                        queue->card->perf_stats.sc_dp_p++;
                  queue->do_pack = 1;
            }
      }
}

/*
 * Switches from packing to non-packing mode. If there is a packing
 * buffer on the queue this buffer will be prepared to be flushed.
 * In that case 1 is returned to inform the caller. If no buffer
 * has to be flushed, zero is returned.
 */
static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
{
      struct qeth_qdio_out_buffer *buffer;
      int flush_count = 0;

      if (queue->do_pack) {
            if (atomic_read(&queue->used_buffers)
                <= QETH_LOW_WATERMARK_PACK) {
                  /* switch PACKING -> non-PACKING */
                  QETH_DBF_TEXT(TRACE, 6, "pack->np");
                  if (queue->card->options.performance_stats)
                        queue->card->perf_stats.sc_p_dp++;
                  queue->do_pack = 0;
                  /* flush packing buffers */
                  buffer = &queue->bufs[queue->next_buf_to_fill];
                  if ((atomic_read(&buffer->state) ==
                                    QETH_QDIO_BUF_EMPTY) &&
                      (buffer->next_element_to_fill > 0)) {
                        atomic_set(&buffer->state,
                                    QETH_QDIO_BUF_PRIMED);
                        flush_count++;
                        queue->next_buf_to_fill =
                              (queue->next_buf_to_fill + 1) %
                              QDIO_MAX_BUFFERS_PER_Q;
                  }
            }
      }
      return flush_count;
}

/*
 * Called to flush a packing buffer if no more pci flags are on the queue.
 * Checks if there is a packing buffer and prepares it to be flushed.
 * In that case returns 1, otherwise zero.
 */
static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
{
      struct qeth_qdio_out_buffer *buffer;

      buffer = &queue->bufs[queue->next_buf_to_fill];
      if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
         (buffer->next_element_to_fill > 0)) {
            /* it's a packing buffer */
            atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
            queue->next_buf_to_fill =
                  (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
            return 1;
      }
      return 0;
}

static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
                         int count)
{
      struct qeth_qdio_out_buffer *buf;
      int rc;
      int i;
      unsigned int qdio_flags;

      for (i = index; i < index + count; ++i) {
            buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
            buf->buffer->element[buf->next_element_to_fill - 1].flags |=
                        SBAL_FLAGS_LAST_ENTRY;

            if (queue->card->info.type == QETH_CARD_TYPE_IQD)
                  continue;

            if (!queue->do_pack) {
                  if ((atomic_read(&queue->used_buffers) >=
                        (QETH_HIGH_WATERMARK_PACK -
                         QETH_WATERMARK_PACK_FUZZ)) &&
                      !atomic_read(&queue->set_pci_flags_count)) {
                        /* it's likely that we'll go to packing
                         * mode soon */
                        atomic_inc(&queue->set_pci_flags_count);
                        buf->buffer->element[0].flags |= 0x40;
                  }
            } else {
                  if (!atomic_read(&queue->set_pci_flags_count)) {
                        /*
                         * there's no outstanding PCI any more, so we
                         * have to request a PCI to be sure the the PCI
                         * will wake at some time in the future then we
                         * can flush packed buffers that might still be
                         * hanging around, which can happen if no
                         * further send was requested by the stack
                         */
                        atomic_inc(&queue->set_pci_flags_count);
                        buf->buffer->element[0].flags |= 0x40;
                  }
            }
      }

      queue->card->dev->trans_start = jiffies;
      if (queue->card->options.performance_stats) {
            queue->card->perf_stats.outbound_do_qdio_cnt++;
            queue->card->perf_stats.outbound_do_qdio_start_time =
                  qeth_get_micros();
      }
      qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
      if (atomic_read(&queue->set_pci_flags_count))
            qdio_flags |= QDIO_FLAG_PCI_OUT;
      rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
                 queue->queue_no, index, count);
      if (queue->card->options.performance_stats)
            queue->card->perf_stats.outbound_do_qdio_time +=
                  qeth_get_micros() -
                  queue->card->perf_stats.outbound_do_qdio_start_time;
      if (rc) {
            queue->card->stats.tx_errors += count;
            /* ignore temporary SIGA errors without busy condition */
            if (rc == QDIO_ERROR_SIGA_TARGET)
                  return;
            QETH_DBF_TEXT(TRACE, 2, "flushbuf");
            QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
            QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));

            /* this must not happen under normal circumstances. if it
             * happens something is really wrong -> recover */
            qeth_schedule_recovery(queue->card);
            return;
      }
      atomic_add(count, &queue->used_buffers);
      if (queue->card->options.performance_stats)
            queue->card->perf_stats.bufs_sent += count;
}

static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
{
      int index;
      int flush_cnt = 0;
      int q_was_packing = 0;

      /*
       * check if weed have to switch to non-packing mode or if
       * we have to get a pci flag out on the queue
       */
      if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
          !atomic_read(&queue->set_pci_flags_count)) {
            if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
                        QETH_OUT_Q_UNLOCKED) {
                  /*
                   * If we get in here, there was no action in
                   * do_send_packet. So, we check if there is a
                   * packing buffer to be flushed here.
                   */
                  netif_stop_queue(queue->card->dev);
                  index = queue->next_buf_to_fill;
                  q_was_packing = queue->do_pack;
                  /* queue->do_pack may change */
                  barrier();
                  flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
                  if (!flush_cnt &&
                      !atomic_read(&queue->set_pci_flags_count))
                        flush_cnt +=
                              qeth_flush_buffers_on_no_pci(queue);
                  if (queue->card->options.performance_stats &&
                      q_was_packing)
                        queue->card->perf_stats.bufs_sent_pack +=
                              flush_cnt;
                  if (flush_cnt)
                        qeth_flush_buffers(queue, index, flush_cnt);
                  atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
            }
      }
}

void qeth_qdio_output_handler(struct ccw_device *ccwdev,
            unsigned int qdio_error, int __queue, int first_element,
            int count, unsigned long card_ptr)
{
      struct qeth_card *card        = (struct qeth_card *) card_ptr;
      struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
      struct qeth_qdio_out_buffer *buffer;
      int i;

      QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
      if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
            QETH_DBF_TEXT(TRACE, 2, "achkcond");
            QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
            netif_stop_queue(card->dev);
            qeth_schedule_recovery(card);
            return;
      }
      if (card->options.performance_stats) {
            card->perf_stats.outbound_handler_cnt++;
            card->perf_stats.outbound_handler_start_time =
                  qeth_get_micros();
      }
      for (i = first_element; i < (first_element + count); ++i) {
            buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
            qeth_handle_send_error(card, buffer, qdio_error);
            qeth_clear_output_buffer(queue, buffer);
      }
      atomic_sub(count, &queue->used_buffers);
      /* check if we need to do something on this outbound queue */
      if (card->info.type != QETH_CARD_TYPE_IQD)
            qeth_check_outbound_queue(queue);

      netif_wake_queue(queue->card->dev);
      if (card->options.performance_stats)
            card->perf_stats.outbound_handler_time += qeth_get_micros() -
                  card->perf_stats.outbound_handler_start_time;
}
EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);

int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
{
      int cast_type = RTN_UNSPEC;

      if (card->info.type == QETH_CARD_TYPE_OSN)
            return cast_type;

      if (skb_dst(skb) && skb_dst(skb)->neighbour) {
            cast_type = skb_dst(skb)->neighbour->type;
            if ((cast_type == RTN_BROADCAST) ||
                (cast_type == RTN_MULTICAST) ||
                (cast_type == RTN_ANYCAST))
                  return cast_type;
            else
                  return RTN_UNSPEC;
      }
      /* try something else */
      if (skb->protocol == ETH_P_IPV6)
            return (skb_network_header(skb)[24] == 0xff) ?
                        RTN_MULTICAST : 0;
      else if (skb->protocol == ETH_P_IP)
            return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
                        RTN_MULTICAST : 0;
      /* ... */
      if (!memcmp(skb->data, skb->dev->broadcast, 6))
            return RTN_BROADCAST;
      else {
            u16 hdr_mac;

            hdr_mac = *((u16 *)skb->data);
            /* tr multicast? */
            switch (card->info.link_type) {
            case QETH_LINK_TYPE_HSTR:
            case QETH_LINK_TYPE_LANE_TR:
                  if ((hdr_mac == QETH_TR_MAC_NC) ||
                      (hdr_mac == QETH_TR_MAC_C))
                        return RTN_MULTICAST;
                  break;
            /* eth or so multicast? */
            default:
            if ((hdr_mac == QETH_ETH_MAC_V4) ||
                      (hdr_mac == QETH_ETH_MAC_V6))
                        return RTN_MULTICAST;
            }
      }
      return cast_type;
}
EXPORT_SYMBOL_GPL(qeth_get_cast_type);

int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
                  int ipv, int cast_type)
{
      if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
            return card->qdio.default_out_queue;
      switch (card->qdio.no_out_queues) {
      case 4:
            if (cast_type && card->info.is_multicast_different)
                  return card->info.is_multicast_different &
                        (card->qdio.no_out_queues - 1);
            if (card->qdio.do_prio_queueing && (ipv == 4)) {
                  const u8 tos = ip_hdr(skb)->tos;

                  if (card->qdio.do_prio_queueing ==
                        QETH_PRIO_Q_ING_TOS) {
                        if (tos & IP_TOS_NOTIMPORTANT)
                              return 3;
                        if (tos & IP_TOS_HIGHRELIABILITY)
                              return 2;
                        if (tos & IP_TOS_HIGHTHROUGHPUT)
                              return 1;
                        if (tos & IP_TOS_LOWDELAY)
                              return 0;
                  }
                  if (card->qdio.do_prio_queueing ==
                        QETH_PRIO_Q_ING_PREC)
                        return 3 - (tos >> 6);
            } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
                  /* TODO: IPv6!!! */
            }
            return card->qdio.default_out_queue;
      case 1: /* fallthrough for single-out-queue 1920-device */
      default:
            return card->qdio.default_out_queue;
      }
}
EXPORT_SYMBOL_GPL(qeth_get_priority_queue);

int qeth_get_elements_no(struct qeth_card *card, void *hdr,
                 struct sk_buff *skb, int elems)
{
      int elements_needed = 0;

      if (skb_shinfo(skb)->nr_frags > 0)
            elements_needed = (skb_shinfo(skb)->nr_frags + 1);
      if (elements_needed == 0)
            elements_needed = 1 + (((((unsigned long) skb->data) %
                        PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
      if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
            QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
                  "(Number=%d / Length=%d). Discarded.\n",
                  (elements_needed+elems), skb->len);
            return 0;
      }
      return elements_needed;
}
EXPORT_SYMBOL_GPL(qeth_get_elements_no);

static inline void __qeth_fill_buffer(struct sk_buff *skb,
      struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
      int offset)
{
      int length = skb->len;
      int length_here;
      int element;
      char *data;
      int first_lap ;

      element = *next_element_to_fill;
      data = skb->data;
      first_lap = (is_tso == 0 ? 1 : 0);

      if (offset >= 0) {
            data = skb->data + offset;
            length -= offset;
            first_lap = 0;
      }

      while (length > 0) {
            /* length_here is the remaining amount of data in this page */
            length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
            if (length < length_here)
                  length_here = length;

            buffer->element[element].addr = data;
            buffer->element[element].length = length_here;
            length -= length_here;
            if (!length) {
                  if (first_lap)
                        buffer->element[element].flags = 0;
                  else
                        buffer->element[element].flags =
                            SBAL_FLAGS_LAST_FRAG;
            } else {
                  if (first_lap)
                        buffer->element[element].flags =
                            SBAL_FLAGS_FIRST_FRAG;
                  else
                        buffer->element[element].flags =
                            SBAL_FLAGS_MIDDLE_FRAG;
            }
            data += length_here;
            element++;
            first_lap = 0;
      }
      *next_element_to_fill = element;
}

static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
            struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
            struct qeth_hdr *hdr, int offset, int hd_len)
{
      struct qdio_buffer *buffer;
      int flush_cnt = 0, hdr_len, large_send = 0;

      buffer = buf->buffer;
      atomic_inc(&skb->users);
      skb_queue_tail(&buf->skb_list, skb);

      /*check first on TSO ....*/
      if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
            int element = buf->next_element_to_fill;

            hdr_len = sizeof(struct qeth_hdr_tso) +
                  ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
            /*fill first buffer entry only with header information */
            buffer->element[element].addr = skb->data;
            buffer->element[element].length = hdr_len;
            buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
            buf->next_element_to_fill++;
            skb->data += hdr_len;
            skb->len  -= hdr_len;
            large_send = 1;
      }

      if (offset >= 0) {
            int element = buf->next_element_to_fill;
            buffer->element[element].addr = hdr;
            buffer->element[element].length = sizeof(struct qeth_hdr) +
                                          hd_len;
            buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
            buf->is_header[element] = 1;
            buf->next_element_to_fill++;
      }

      if (skb_shinfo(skb)->nr_frags == 0)
            __qeth_fill_buffer(skb, buffer, large_send,
                        (int *)&buf->next_element_to_fill, offset);
      else
            __qeth_fill_buffer_frag(skb, buffer, large_send,
                              (int *)&buf->next_element_to_fill);

      if (!queue->do_pack) {
            QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
            /* set state to PRIMED -> will be flushed */
            atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
            flush_cnt = 1;
      } else {
            QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
            if (queue->card->options.performance_stats)
                  queue->card->perf_stats.skbs_sent_pack++;
            if (buf->next_element_to_fill >=
                        QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
                  /*
                   * packed buffer if full -> set state PRIMED
                   * -> will be flushed
                   */
                  atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
                  flush_cnt = 1;
            }
      }
      return flush_cnt;
}

int qeth_do_send_packet_fast(struct qeth_card *card,
            struct qeth_qdio_out_q *queue, struct sk_buff *skb,
            struct qeth_hdr *hdr, int elements_needed,
            int offset, int hd_len)
{
      struct qeth_qdio_out_buffer *buffer;
      int index;

      /* spin until we get the queue ... */
      while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
                        QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
      /* ... now we've got the queue */
      index = queue->next_buf_to_fill;
      buffer = &queue->bufs[queue->next_buf_to_fill];
      /*
       * check if buffer is empty to make sure that we do not 'overtake'
       * ourselves and try to fill a buffer that is already primed
       */
      if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
            goto out;
      queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
                                QDIO_MAX_BUFFERS_PER_Q;
      atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
      qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
      qeth_flush_buffers(queue, index, 1);
      return 0;
out:
      atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
      return -EBUSY;
}
EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);

int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
            struct sk_buff *skb, struct qeth_hdr *hdr,
            int elements_needed)
{
      struct qeth_qdio_out_buffer *buffer;
      int start_index;
      int flush_count = 0;
      int do_pack = 0;
      int tmp;
      int rc = 0;

      /* spin until we get the queue ... */
      while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
                        QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
      start_index = queue->next_buf_to_fill;
      buffer = &queue->bufs[queue->next_buf_to_fill];
      /*
       * check if buffer is empty to make sure that we do not 'overtake'
       * ourselves and try to fill a buffer that is already primed
       */
      if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
            atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
            return -EBUSY;
      }
      /* check if we need to switch packing state of this queue */
      qeth_switch_to_packing_if_needed(queue);
      if (queue->do_pack) {
            do_pack = 1;
            /* does packet fit in current buffer? */
            if ((QETH_MAX_BUFFER_ELEMENTS(card) -
                buffer->next_element_to_fill) < elements_needed) {
                  /* ... no -> set state PRIMED */
                  atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
                  flush_count++;
                  queue->next_buf_to_fill =
                        (queue->next_buf_to_fill + 1) %
                        QDIO_MAX_BUFFERS_PER_Q;
                  buffer = &queue->bufs[queue->next_buf_to_fill];
                  /* we did a step forward, so check buffer state
                   * again */
                  if (atomic_read(&buffer->state) !=
                      QETH_QDIO_BUF_EMPTY) {
                        qeth_flush_buffers(queue, start_index,
                                             flush_count);
                        atomic_set(&queue->state,
                                    QETH_OUT_Q_UNLOCKED);
                        return -EBUSY;
                  }
            }
      }
      tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
      queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
                          QDIO_MAX_BUFFERS_PER_Q;
      flush_count += tmp;
      if (flush_count)
            qeth_flush_buffers(queue, start_index, flush_count);
      else if (!atomic_read(&queue->set_pci_flags_count))
            atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
      /*
       * queue->state will go from LOCKED -> UNLOCKED or from
       * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
       * (switch packing state or flush buffer to get another pci flag out).
       * In that case we will enter this loop
       */
      while (atomic_dec_return(&queue->state)) {
            flush_count = 0;
            start_index = queue->next_buf_to_fill;
            /* check if we can go back to non-packing state */
            flush_count += qeth_switch_to_nonpacking_if_needed(queue);
            /*
             * check if we need to flush a packing buffer to get a pci
             * flag out on the queue
             */
            if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
                  flush_count += qeth_flush_buffers_on_no_pci(queue);
            if (flush_count)
                  qeth_flush_buffers(queue, start_index, flush_count);
      }
      /* at this point the queue is UNLOCKED again */
      if (queue->card->options.performance_stats && do_pack)
            queue->card->perf_stats.bufs_sent_pack += flush_count;

      return rc;
}
EXPORT_SYMBOL_GPL(qeth_do_send_packet);

static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
            struct qeth_reply *reply, unsigned long data)
{
      struct qeth_ipa_cmd *cmd;
      struct qeth_ipacmd_setadpparms *setparms;

      QETH_DBF_TEXT(TRACE, 4, "prmadpcb");

      cmd = (struct qeth_ipa_cmd *) data;
      setparms = &(cmd->data.setadapterparms);

      qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
      if (cmd->hdr.return_code) {
            QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
            setparms->data.mode = SET_PROMISC_MODE_OFF;
      }
      card->info.promisc_mode = setparms->data.mode;
      return 0;
}

void qeth_setadp_promisc_mode(struct qeth_card *card)
{
      enum qeth_ipa_promisc_modes mode;
      struct net_device *dev = card->dev;
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(TRACE, 4, "setprom");

      if (((dev->flags & IFF_PROMISC) &&
           (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
          (!(dev->flags & IFF_PROMISC) &&
           (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
            return;
      mode = SET_PROMISC_MODE_OFF;
      if (dev->flags & IFF_PROMISC)
            mode = SET_PROMISC_MODE_ON;
      QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);

      iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
                  sizeof(struct qeth_ipacmd_setadpparms));
      cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
      cmd->data.setadapterparms.data.mode = mode;
      qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
}
EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);

int qeth_change_mtu(struct net_device *dev, int new_mtu)
{
      struct qeth_card *card;
      char dbf_text[15];

      card = dev->ml_priv;

      QETH_DBF_TEXT(TRACE, 4, "chgmtu");
      sprintf(dbf_text, "%8x", new_mtu);
      QETH_DBF_TEXT(TRACE, 4, dbf_text);

      if (new_mtu < 64)
            return -EINVAL;
      if (new_mtu > 65535)
            return -EINVAL;
      if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
          (!qeth_mtu_is_valid(card, new_mtu)))
            return -EINVAL;
      dev->mtu = new_mtu;
      return 0;
}
EXPORT_SYMBOL_GPL(qeth_change_mtu);

struct net_device_stats *qeth_get_stats(struct net_device *dev)
{
      struct qeth_card *card;

      card = dev->ml_priv;

      QETH_DBF_TEXT(TRACE, 5, "getstat");

      return &card->stats;
}
EXPORT_SYMBOL_GPL(qeth_get_stats);

static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
            struct qeth_reply *reply, unsigned long data)
{
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(TRACE, 4, "chgmaccb");

      cmd = (struct qeth_ipa_cmd *) data;
      if (!card->options.layer2 ||
          !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
            memcpy(card->dev->dev_addr,
                   &cmd->data.setadapterparms.data.change_addr.addr,
                   OSA_ADDR_LEN);
            card->info.mac_bits |= QETH_LAYER2_MAC_READ;
      }
      qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
      return 0;
}

int qeth_setadpparms_change_macaddr(struct qeth_card *card)
{
      int rc;
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;

      QETH_DBF_TEXT(TRACE, 4, "chgmac");

      iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
                           sizeof(struct qeth_ipacmd_setadpparms));
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
      cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
      memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
             card->dev->dev_addr, OSA_ADDR_LEN);
      rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
                         NULL);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);

void qeth_tx_timeout(struct net_device *dev)
{
      struct qeth_card *card;

      card = dev->ml_priv;
      card->stats.tx_errors++;
      qeth_schedule_recovery(card);
}
EXPORT_SYMBOL_GPL(qeth_tx_timeout);

int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
{
      struct qeth_card *card = dev->ml_priv;
      int rc = 0;

      switch (regnum) {
      case MII_BMCR: /* Basic mode control register */
            rc = BMCR_FULLDPLX;
            if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
                (card->info.link_type != QETH_LINK_TYPE_OSN) &&
                (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
                  rc |= BMCR_SPEED100;
            break;
      case MII_BMSR: /* Basic mode status register */
            rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
                 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
                 BMSR_100BASE4;
            break;
      case MII_PHYSID1: /* PHYS ID 1 */
            rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
                 dev->dev_addr[2];
            rc = (rc >> 5) & 0xFFFF;
            break;
      case MII_PHYSID2: /* PHYS ID 2 */
            rc = (dev->dev_addr[2] << 10) & 0xFFFF;
            break;
      case MII_ADVERTISE: /* Advertisement control reg */
            rc = ADVERTISE_ALL;
            break;
      case MII_LPA: /* Link partner ability reg */
            rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
                 LPA_100BASE4 | LPA_LPACK;
            break;
      case MII_EXPANSION: /* Expansion register */
            break;
      case MII_DCOUNTER: /* disconnect counter */
            break;
      case MII_FCSCOUNTER: /* false carrier counter */
            break;
      case MII_NWAYTEST: /* N-way auto-neg test register */
            break;
      case MII_RERRCOUNTER: /* rx error counter */
            rc = card->stats.rx_errors;
            break;
      case MII_SREVISION: /* silicon revision */
            break;
      case MII_RESV1: /* reserved 1 */
            break;
      case MII_LBRERROR: /* loopback, rx, bypass error */
            break;
      case MII_PHYADDR: /* physical address */
            break;
      case MII_RESV2: /* reserved 2 */
            break;
      case MII_TPISTATUS: /* TPI status for 10mbps */
            break;
      case MII_NCONFIG: /* network interface config */
            break;
      default:
            break;
      }
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_mdio_read);

static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
            struct qeth_cmd_buffer *iob, int len,
            int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
                  unsigned long),
            void *reply_param)
{
      u16 s1, s2;

      QETH_DBF_TEXT(TRACE, 4, "sendsnmp");

      memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
      memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
             &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
      /* adjust PDU length fields in IPA_PDU_HEADER */
      s1 = (u32) IPA_PDU_HEADER_SIZE + len;
      s2 = (u32) len;
      memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
      memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
      return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
                              reply_cb, reply_param);
}

static int qeth_snmp_command_cb(struct qeth_card *card,
            struct qeth_reply *reply, unsigned long sdata)
{
      struct qeth_ipa_cmd *cmd;
      struct qeth_arp_query_info *qinfo;
      struct qeth_snmp_cmd *snmp;
      unsigned char *data;
      __u16 data_len;

      QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");

      cmd = (struct qeth_ipa_cmd *) sdata;
      data = (unsigned char *)((char *)cmd - reply->offset);
      qinfo = (struct qeth_arp_query_info *) reply->param;
      snmp = &cmd->data.setadapterparms.data.snmp;

      if (cmd->hdr.return_code) {
            QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
            return 0;
      }
      if (cmd->data.setadapterparms.hdr.return_code) {
            cmd->hdr.return_code =
                  cmd->data.setadapterparms.hdr.return_code;
            QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
            return 0;
      }
      data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
      if (cmd->data.setadapterparms.hdr.seq_no == 1)
            data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
      else
            data_len -= (__u16)((char *)&snmp->request - (char *)cmd);

      /* check if there is enough room in userspace */
      if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
            QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
            cmd->hdr.return_code = -ENOMEM;
            return 0;
      }
      QETH_DBF_TEXT_(TRACE, 4, "snore%i",
                   cmd->data.setadapterparms.hdr.used_total);
      QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
            cmd->data.setadapterparms.hdr.seq_no);
      /*copy entries to user buffer*/
      if (cmd->data.setadapterparms.hdr.seq_no == 1) {
            memcpy(qinfo->udata + qinfo->udata_offset,
                   (char *)snmp,
                   data_len + offsetof(struct qeth_snmp_cmd, data));
            qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
      } else {
            memcpy(qinfo->udata + qinfo->udata_offset,
                   (char *)&snmp->request, data_len);
      }
      qinfo->udata_offset += data_len;
      /* check if all replies received ... */
            QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
                         cmd->data.setadapterparms.hdr.used_total);
            QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
                         cmd->data.setadapterparms.hdr.seq_no);
      if (cmd->data.setadapterparms.hdr.seq_no <
          cmd->data.setadapterparms.hdr.used_total)
            return 1;
      return 0;
}

int qeth_snmp_command(struct qeth_card *card, char __user *udata)
{
      struct qeth_cmd_buffer *iob;
      struct qeth_ipa_cmd *cmd;
      struct qeth_snmp_ureq *ureq;
      int req_len;
      struct qeth_arp_query_info qinfo = {0, };
      int rc = 0;

      QETH_DBF_TEXT(TRACE, 3, "snmpcmd");

      if (card->info.guestlan)
            return -EOPNOTSUPP;

      if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
          (!card->options.layer2)) {
            return -EOPNOTSUPP;
      }
      /* skip 4 bytes (data_len struct member) to get req_len */
      if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
            return -EFAULT;
      ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
      if (!ureq) {
            QETH_DBF_TEXT(TRACE, 2, "snmpnome");
            return -ENOMEM;
      }
      if (copy_from_user(ureq, udata,
                  req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
            kfree(ureq);
            return -EFAULT;
      }
      qinfo.udata_len = ureq->hdr.data_len;
      qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
      if (!qinfo.udata) {
            kfree(ureq);
            return -ENOMEM;
      }
      qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);

      iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
                           QETH_SNMP_SETADP_CMDLENGTH + req_len);
      cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
      memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
      rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
                            qeth_snmp_command_cb, (void *)&qinfo);
      if (rc)
            QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
                     QETH_CARD_IFNAME(card), rc);
      else {
            if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
                  rc = -EFAULT;
      }

      kfree(ureq);
      kfree(qinfo.udata);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_snmp_command);

static inline int qeth_get_qdio_q_format(struct qeth_card *card)
{
      switch (card->info.type) {
      case QETH_CARD_TYPE_IQD:
            return 2;
      default:
            return 0;
      }
}

static int qeth_qdio_establish(struct qeth_card *card)
{
      struct qdio_initialize init_data;
      char *qib_param_field;
      struct qdio_buffer **in_sbal_ptrs;
      struct qdio_buffer **out_sbal_ptrs;
      int i, j, k;
      int rc = 0;

      QETH_DBF_TEXT(SETUP, 2, "qdioest");

      qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
                        GFP_KERNEL);
      if (!qib_param_field)
            return -ENOMEM;

      qeth_create_qib_param_field(card, qib_param_field);
      qeth_create_qib_param_field_blkt(card, qib_param_field);

      in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
                         GFP_KERNEL);
      if (!in_sbal_ptrs) {
            kfree(qib_param_field);
            return -ENOMEM;
      }
      for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
            in_sbal_ptrs[i] = (struct qdio_buffer *)
                  virt_to_phys(card->qdio.in_q->bufs[i].buffer);

      out_sbal_ptrs =
            kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
                  sizeof(void *), GFP_KERNEL);
      if (!out_sbal_ptrs) {
            kfree(in_sbal_ptrs);
            kfree(qib_param_field);
            return -ENOMEM;
      }
      for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
            for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
                  out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
                        card->qdio.out_qs[i]->bufs[j].buffer);
            }

      memset(&init_data, 0, sizeof(struct qdio_initialize));
      init_data.cdev                   = CARD_DDEV(card);
      init_data.q_format               = qeth_get_qdio_q_format(card);
      init_data.qib_param_field_format = 0;
      init_data.qib_param_field        = qib_param_field;
      init_data.no_input_qs            = 1;
      init_data.no_output_qs           = card->qdio.no_out_queues;
      init_data.input_handler          = card->discipline.input_handler;
      init_data.output_handler         = card->discipline.output_handler;
      init_data.int_parm               = (unsigned long) card;
      init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
                                 QDIO_OUTBOUND_0COPY_SBALS |
                                 QDIO_USE_OUTBOUND_PCIS;
      init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
      init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;

      if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
            QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
            rc = qdio_initialize(&init_data);
            if (rc)
                  atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
      }
      kfree(out_sbal_ptrs);
      kfree(in_sbal_ptrs);
      kfree(qib_param_field);
      return rc;
}

static void qeth_core_free_card(struct qeth_card *card)
{

      QETH_DBF_TEXT(SETUP, 2, "freecrd");
      QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
      qeth_clean_channel(&card->read);
      qeth_clean_channel(&card->write);
      if (card->dev)
            free_netdev(card->dev);
      kfree(card->ip_tbd_list);
      qeth_free_qdio_buffers(card);
      unregister_service_level(&card->qeth_service_level);
      kfree(card);
}

static struct ccw_device_id qeth_ids[] = {
      {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
      {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
      {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
      {},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);

static struct ccw_driver qeth_ccw_driver = {
      .name = "qeth",
      .ids = qeth_ids,
      .probe = ccwgroup_probe_ccwdev,
      .remove = ccwgroup_remove_ccwdev,
};

static int qeth_core_driver_group(const char *buf, struct device *root_dev,
                        unsigned long driver_id)
{
      return ccwgroup_create_from_string(root_dev, driver_id,
                                 &qeth_ccw_driver, 3, buf);
}

int qeth_core_hardsetup_card(struct qeth_card *card)
{
      struct qdio_ssqd_desc *ssqd;
      int retries = 3;
      int mpno = 0;
      int rc;

      QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
      atomic_set(&card->force_alloc_skb, 0);
retry:
      if (retries < 3) {
            QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
                  dev_name(&card->gdev->dev));
            ccw_device_set_offline(CARD_DDEV(card));
            ccw_device_set_offline(CARD_WDEV(card));
            ccw_device_set_offline(CARD_RDEV(card));
            ccw_device_set_online(CARD_RDEV(card));
            ccw_device_set_online(CARD_WDEV(card));
            ccw_device_set_online(CARD_DDEV(card));
      }
      rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
      if (rc == -ERESTARTSYS) {
            QETH_DBF_TEXT(SETUP, 2, "break1");
            return rc;
      } else if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
            if (--retries < 0)
                  goto out;
            else
                  goto retry;
      }

      rc = qeth_get_unitaddr(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
            return rc;
      }

      ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL);
      if (!ssqd) {
            rc = -ENOMEM;
            goto out;
      }
      rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd);
      if (rc == 0)
            mpno = ssqd->pcnt;
      kfree(ssqd);

      if (mpno)
            mpno = min(mpno - 1, QETH_MAX_PORTNO);
      if (card->info.portno > mpno) {
            QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d"
                  "\n.", CARD_BUS_ID(card), card->info.portno);
            rc = -ENODEV;
            goto out;
      }
      qeth_init_tokens(card);
      qeth_init_func_level(card);
      rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
      if (rc == -ERESTARTSYS) {
            QETH_DBF_TEXT(SETUP, 2, "break2");
            return rc;
      } else if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
            if (--retries < 0)
                  goto out;
            else
                  goto retry;
      }
      rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
      if (rc == -ERESTARTSYS) {
            QETH_DBF_TEXT(SETUP, 2, "break3");
            return rc;
      } else if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
            if (--retries < 0)
                  goto out;
            else
                  goto retry;
      }
      rc = qeth_mpc_initialize(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
            goto out;
      }
      return 0;
out:
      dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
            "an error on the device\n");
      QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
            dev_name(&card->gdev->dev), rc);
      return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);

static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
            struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
      struct page *page = virt_to_page(element->addr);
      if (*pskb == NULL) {
            /* the upper protocol layers assume that there is data in the
             * skb itself. Copy a small amount (64 bytes) to make them
             * happy. */
            *pskb = dev_alloc_skb(64 + ETH_HLEN);
            if (!(*pskb))
                  return -ENOMEM;
            skb_reserve(*pskb, ETH_HLEN);
            if (data_len <= 64) {
                  memcpy(skb_put(*pskb, data_len), element->addr + offset,
                        data_len);
            } else {
                  get_page(page);
                  memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
                  skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
                        data_len - 64);
                  (*pskb)->data_len += data_len - 64;
                  (*pskb)->len      += data_len - 64;
                  (*pskb)->truesize += data_len - 64;
                  (*pfrag)++;
            }
      } else {
            get_page(page);
            skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
            (*pskb)->data_len += data_len;
            (*pskb)->len      += data_len;
            (*pskb)->truesize += data_len;
            (*pfrag)++;
      }
      return 0;
}

struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
            struct qdio_buffer *buffer,
            struct qdio_buffer_element **__element, int *__offset,
            struct qeth_hdr **hdr)
{
      struct qdio_buffer_element *element = *__element;
      int offset = *__offset;
      struct sk_buff *skb = NULL;
      int skb_len;
      void *data_ptr;
      int data_len;
      int headroom = 0;
      int use_rx_sg = 0;
      int frag = 0;

      /* qeth_hdr must not cross element boundaries */
      if (element->length < offset + sizeof(struct qeth_hdr)) {
            if (qeth_is_last_sbale(element))
                  return NULL;
            element++;
            offset = 0;
            if (element->length < sizeof(struct qeth_hdr))
                  return NULL;
      }
      *hdr = element->addr + offset;

      offset += sizeof(struct qeth_hdr);
      if (card->options.layer2) {
            if (card->info.type == QETH_CARD_TYPE_OSN) {
                  skb_len = (*hdr)->hdr.osn.pdu_length;
                  headroom = sizeof(struct qeth_hdr);
            } else {
                  skb_len = (*hdr)->hdr.l2.pkt_length;
            }
      } else {
            skb_len = (*hdr)->hdr.l3.length;
            if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
                (card->info.link_type == QETH_LINK_TYPE_HSTR))
                  headroom = TR_HLEN;
            else
                  headroom = ETH_HLEN;
      }

      if (!skb_len)
            return NULL;

      if ((skb_len >= card->options.rx_sg_cb) &&
          (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
          (!atomic_read(&card->force_alloc_skb))) {
            use_rx_sg = 1;
      } else {
            skb = dev_alloc_skb(skb_len + headroom);
            if (!skb)
                  goto no_mem;
            if (headroom)
                  skb_reserve(skb, headroom);
      }

      data_ptr = element->addr + offset;
      while (skb_len) {
            data_len = min(skb_len, (int)(element->length - offset));
            if (data_len) {
                  if (use_rx_sg) {
                        if (qeth_create_skb_frag(element, &skb, offset,
                            &frag, data_len))
                              goto no_mem;
                  } else {
                        memcpy(skb_put(skb, data_len), data_ptr,
                              data_len);
                  }
            }
            skb_len -= data_len;
            if (skb_len) {
                  if (qeth_is_last_sbale(element)) {
                        QETH_DBF_TEXT(TRACE, 4, "unexeob");
                        QETH_DBF_TEXT_(TRACE, 4, "%s",
                              CARD_BUS_ID(card));
                        QETH_DBF_TEXT(QERR, 2, "unexeob");
                        QETH_DBF_TEXT_(QERR, 2, "%s",
                              CARD_BUS_ID(card));
                        QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
                        dev_kfree_skb_any(skb);
                        card->stats.rx_errors++;
                        return NULL;
                  }
                  element++;
                  offset = 0;
                  data_ptr = element->addr;
            } else {
                  offset += data_len;
            }
      }
      *__element = element;
      *__offset = offset;
      if (use_rx_sg && card->options.performance_stats) {
            card->perf_stats.sg_skbs_rx++;
            card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
      }
      return skb;
no_mem:
      if (net_ratelimit()) {
            QETH_DBF_TEXT(TRACE, 2, "noskbmem");
            QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
      }
      card->stats.rx_dropped++;
      return NULL;
}
EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);

static void qeth_unregister_dbf_views(void)
{
      int x;
      for (x = 0; x < QETH_DBF_INFOS; x++) {
            debug_unregister(qeth_dbf[x].id);
            qeth_dbf[x].id = NULL;
      }
}

void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
{
      char dbf_txt_buf[32];
      va_list args;

      if (level > (qeth_dbf[dbf_nix].id)->level)
            return;
      va_start(args, fmt);
      vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
      va_end(args);
      debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
}
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);

static int qeth_register_dbf_views(void)
{
      int ret;
      int x;

      for (x = 0; x < QETH_DBF_INFOS; x++) {
            /* register the areas */
            qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
                                    qeth_dbf[x].pages,
                                    qeth_dbf[x].areas,
                                    qeth_dbf[x].len);
            if (qeth_dbf[x].id == NULL) {
                  qeth_unregister_dbf_views();
                  return -ENOMEM;
            }

            /* register a view */
            ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
            if (ret) {
                  qeth_unregister_dbf_views();
                  return ret;
            }

            /* set a passing level */
            debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
      }

      return 0;
}

int qeth_core_load_discipline(struct qeth_card *card,
            enum qeth_discipline_id discipline)
{
      int rc = 0;
      switch (discipline) {
      case QETH_DISCIPLINE_LAYER3:
            card->discipline.ccwgdriver = try_then_request_module(
                  symbol_get(qeth_l3_ccwgroup_driver),
                  "qeth_l3");
            break;
      case QETH_DISCIPLINE_LAYER2:
            card->discipline.ccwgdriver = try_then_request_module(
                  symbol_get(qeth_l2_ccwgroup_driver),
                  "qeth_l2");
            break;
      }
      if (!card->discipline.ccwgdriver) {
            dev_err(&card->gdev->dev, "There is no kernel module to "
                  "support discipline %d\n", discipline);
            rc = -EINVAL;
      }
      return rc;
}

void qeth_core_free_discipline(struct qeth_card *card)
{
      if (card->options.layer2)
            symbol_put(qeth_l2_ccwgroup_driver);
      else
            symbol_put(qeth_l3_ccwgroup_driver);
      card->discipline.ccwgdriver = NULL;
}

static int qeth_core_probe_device(struct ccwgroup_device *gdev)
{
      struct qeth_card *card;
      struct device *dev;
      int rc;
      unsigned long flags;

      QETH_DBF_TEXT(SETUP, 2, "probedev");

      dev = &gdev->dev;
      if (!get_device(dev))
            return -ENODEV;

      QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));

      card = qeth_alloc_card();
      if (!card) {
            QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
            rc = -ENOMEM;
            goto err_dev;
      }
      card->read.ccwdev  = gdev->cdev[0];
      card->write.ccwdev = gdev->cdev[1];
      card->data.ccwdev  = gdev->cdev[2];
      dev_set_drvdata(&gdev->dev, card);
      card->gdev = gdev;
      gdev->cdev[0]->handler = qeth_irq;
      gdev->cdev[1]->handler = qeth_irq;
      gdev->cdev[2]->handler = qeth_irq;

      rc = qeth_determine_card_type(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
            goto err_card;
      }
      rc = qeth_setup_card(card);
      if (rc) {
            QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
            goto err_card;
      }

      if (card->info.type == QETH_CARD_TYPE_OSN) {
            rc = qeth_core_create_osn_attributes(dev);
            if (rc)
                  goto err_card;
            rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
            if (rc) {
                  qeth_core_remove_osn_attributes(dev);
                  goto err_card;
            }
            rc = card->discipline.ccwgdriver->probe(card->gdev);
            if (rc) {
                  qeth_core_free_discipline(card);
                  qeth_core_remove_osn_attributes(dev);
                  goto err_card;
            }
      } else {
            rc = qeth_core_create_device_attributes(dev);
            if (rc)
                  goto err_card;
      }

      write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
      list_add_tail(&card->list, &qeth_core_card_list.list);
      write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
      return 0;

err_card:
      qeth_core_free_card(card);
err_dev:
      put_device(dev);
      return rc;
}

static void qeth_core_remove_device(struct ccwgroup_device *gdev)
{
      unsigned long flags;
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);

      QETH_DBF_TEXT(SETUP, 2, "removedv");
      if (card->discipline.ccwgdriver) {
            card->discipline.ccwgdriver->remove(gdev);
            qeth_core_free_discipline(card);
      }

      if (card->info.type == QETH_CARD_TYPE_OSN) {
            qeth_core_remove_osn_attributes(&gdev->dev);
      } else {
            qeth_core_remove_device_attributes(&gdev->dev);
      }
      write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
      list_del(&card->list);
      write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
      qeth_core_free_card(card);
      dev_set_drvdata(&gdev->dev, NULL);
      put_device(&gdev->dev);
      return;
}

static int qeth_core_set_online(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      int rc = 0;
      int def_discipline;

      if (!card->discipline.ccwgdriver) {
            if (card->info.type == QETH_CARD_TYPE_IQD)
                  def_discipline = QETH_DISCIPLINE_LAYER3;
            else
                  def_discipline = QETH_DISCIPLINE_LAYER2;
            rc = qeth_core_load_discipline(card, def_discipline);
            if (rc)
                  goto err;
            rc = card->discipline.ccwgdriver->probe(card->gdev);
            if (rc)
                  goto err;
      }
      rc = card->discipline.ccwgdriver->set_online(gdev);
err:
      return rc;
}

static int qeth_core_set_offline(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      return card->discipline.ccwgdriver->set_offline(gdev);
}

static void qeth_core_shutdown(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      if (card->discipline.ccwgdriver &&
          card->discipline.ccwgdriver->shutdown)
            card->discipline.ccwgdriver->shutdown(gdev);
}

static int qeth_core_prepare(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      if (card->discipline.ccwgdriver &&
          card->discipline.ccwgdriver->prepare)
            return card->discipline.ccwgdriver->prepare(gdev);
      return 0;
}

static void qeth_core_complete(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      if (card->discipline.ccwgdriver &&
          card->discipline.ccwgdriver->complete)
            card->discipline.ccwgdriver->complete(gdev);
}

static int qeth_core_freeze(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      if (card->discipline.ccwgdriver &&
          card->discipline.ccwgdriver->freeze)
            return card->discipline.ccwgdriver->freeze(gdev);
      return 0;
}

static int qeth_core_thaw(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      if (card->discipline.ccwgdriver &&
          card->discipline.ccwgdriver->thaw)
            return card->discipline.ccwgdriver->thaw(gdev);
      return 0;
}

static int qeth_core_restore(struct ccwgroup_device *gdev)
{
      struct qeth_card *card = dev_get_drvdata(&gdev->dev);
      if (card->discipline.ccwgdriver &&
          card->discipline.ccwgdriver->restore)
            return card->discipline.ccwgdriver->restore(gdev);
      return 0;
}

static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
      .owner = THIS_MODULE,
      .name = "qeth",
      .driver_id = 0xD8C5E3C8,
      .probe = qeth_core_probe_device,
      .remove = qeth_core_remove_device,
      .set_online = qeth_core_set_online,
      .set_offline = qeth_core_set_offline,
      .shutdown = qeth_core_shutdown,
      .prepare = qeth_core_prepare,
      .complete = qeth_core_complete,
      .freeze = qeth_core_freeze,
      .thaw = qeth_core_thaw,
      .restore = qeth_core_restore,
};

static ssize_t
qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
                     size_t count)
{
      int err;
      err = qeth_core_driver_group(buf, qeth_core_root_dev,
                              qeth_core_ccwgroup_driver.driver_id);
      if (err)
            return err;
      else
            return count;
}

static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);

static struct {
      const char str[ETH_GSTRING_LEN];
} qeth_ethtool_stats_keys[] = {
/*  0 */{"rx skbs"},
      {"rx buffers"},
      {"tx skbs"},
      {"tx buffers"},
      {"tx skbs no packing"},
      {"tx buffers no packing"},
      {"tx skbs packing"},
      {"tx buffers packing"},
      {"tx sg skbs"},
      {"tx sg frags"},
/* 10 */{"rx sg skbs"},
      {"rx sg frags"},
      {"rx sg page allocs"},
      {"tx large kbytes"},
      {"tx large count"},
      {"tx pk state ch n->p"},
      {"tx pk state ch p->n"},
      {"tx pk watermark low"},
      {"tx pk watermark high"},
      {"queue 0 buffer usage"},
/* 20 */{"queue 1 buffer usage"},
      {"queue 2 buffer usage"},
      {"queue 3 buffer usage"},
      {"rx handler time"},
      {"rx handler count"},
      {"rx do_QDIO time"},
      {"rx do_QDIO count"},
      {"tx handler time"},
      {"tx handler count"},
      {"tx time"},
/* 30 */{"tx count"},
      {"tx do_QDIO time"},
      {"tx do_QDIO count"},
      {"tx csum"},
};

int qeth_core_get_stats_count(struct net_device *dev)
{
      return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
}
EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);

void qeth_core_get_ethtool_stats(struct net_device *dev,
            struct ethtool_stats *stats, u64 *data)
{
      struct qeth_card *card = dev->ml_priv;
      data[0] = card->stats.rx_packets -
                        card->perf_stats.initial_rx_packets;
      data[1] = card->perf_stats.bufs_rec;
      data[2] = card->stats.tx_packets -
                        card->perf_stats.initial_tx_packets;
      data[3] = card->perf_stats.bufs_sent;
      data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
                  - card->perf_stats.skbs_sent_pack;
      data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
      data[6] = card->perf_stats.skbs_sent_pack;
      data[7] = card->perf_stats.bufs_sent_pack;
      data[8] = card->perf_stats.sg_skbs_sent;
      data[9] = card->perf_stats.sg_frags_sent;
      data[10] = card->perf_stats.sg_skbs_rx;
      data[11] = card->perf_stats.sg_frags_rx;
      data[12] = card->perf_stats.sg_alloc_page_rx;
      data[13] = (card->perf_stats.large_send_bytes >> 10);
      data[14] = card->perf_stats.large_send_cnt;
      data[15] = card->perf_stats.sc_dp_p;
      data[16] = card->perf_stats.sc_p_dp;
      data[17] = QETH_LOW_WATERMARK_PACK;
      data[18] = QETH_HIGH_WATERMARK_PACK;
      data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
      data[20] = (card->qdio.no_out_queues > 1) ?
                  atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
      data[21] = (card->qdio.no_out_queues > 2) ?
                  atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
      data[22] = (card->qdio.no_out_queues > 3) ?
                  atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
      data[23] = card->perf_stats.inbound_time;
      data[24] = card->perf_stats.inbound_cnt;
      data[25] = card->perf_stats.inbound_do_qdio_time;
      data[26] = card->perf_stats.inbound_do_qdio_cnt;
      data[27] = card->perf_stats.outbound_handler_time;
      data[28] = card->perf_stats.outbound_handler_cnt;
      data[29] = card->perf_stats.outbound_time;
      data[30] = card->perf_stats.outbound_cnt;
      data[31] = card->perf_stats.outbound_do_qdio_time;
      data[32] = card->perf_stats.outbound_do_qdio_cnt;
      data[33] = card->perf_stats.tx_csum;
}
EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);

void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
      switch (stringset) {
      case ETH_SS_STATS:
            memcpy(data, &qeth_ethtool_stats_keys,
                  sizeof(qeth_ethtool_stats_keys));
            break;
      default:
            WARN_ON(1);
            break;
      }
}
EXPORT_SYMBOL_GPL(qeth_core_get_strings);

void qeth_core_get_drvinfo(struct net_device *dev,
            struct ethtool_drvinfo *info)
{
      struct qeth_card *card = dev->ml_priv;
      if (card->options.layer2)
            strcpy(info->driver, "qeth_l2");
      else
            strcpy(info->driver, "qeth_l3");

      strcpy(info->version, "1.0");
      strcpy(info->fw_version, card->info.mcl_level);
      sprintf(info->bus_info, "%s/%s/%s",
                  CARD_RDEV_ID(card),
                  CARD_WDEV_ID(card),
                  CARD_DDEV_ID(card));
}
EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);

int qeth_core_ethtool_get_settings(struct net_device *netdev,
                              struct ethtool_cmd *ecmd)
{
      struct qeth_card *card = netdev->ml_priv;
      enum qeth_link_types link_type;

      if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
            link_type = QETH_LINK_TYPE_10GBIT_ETH;
      else
            link_type = card->info.link_type;

      ecmd->transceiver = XCVR_INTERNAL;
      ecmd->supported = SUPPORTED_Autoneg;
      ecmd->advertising = ADVERTISED_Autoneg;
      ecmd->duplex = DUPLEX_FULL;
      ecmd->autoneg = AUTONEG_ENABLE;

      switch (link_type) {
      case QETH_LINK_TYPE_FAST_ETH:
      case QETH_LINK_TYPE_LANE_ETH100:
            ecmd->supported |= SUPPORTED_10baseT_Half |
                              SUPPORTED_10baseT_Full |
                              SUPPORTED_100baseT_Half |
                              SUPPORTED_100baseT_Full |
                              SUPPORTED_TP;
            ecmd->advertising |= ADVERTISED_10baseT_Half |
                              ADVERTISED_10baseT_Full |
                              ADVERTISED_100baseT_Half |
                              ADVERTISED_100baseT_Full |
                              ADVERTISED_TP;
            ecmd->speed = SPEED_100;
            ecmd->port = PORT_TP;
            break;

      case QETH_LINK_TYPE_GBIT_ETH:
      case QETH_LINK_TYPE_LANE_ETH1000:
            ecmd->supported |= SUPPORTED_10baseT_Half |
                              SUPPORTED_10baseT_Full |
                              SUPPORTED_100baseT_Half |
                              SUPPORTED_100baseT_Full |
                              SUPPORTED_1000baseT_Half |
                              SUPPORTED_1000baseT_Full |
                              SUPPORTED_FIBRE;
            ecmd->advertising |= ADVERTISED_10baseT_Half |
                              ADVERTISED_10baseT_Full |
                              ADVERTISED_100baseT_Half |
                              ADVERTISED_100baseT_Full |
                              ADVERTISED_1000baseT_Half |
                              ADVERTISED_1000baseT_Full |
                              ADVERTISED_FIBRE;
            ecmd->speed = SPEED_1000;
            ecmd->port = PORT_FIBRE;
            break;

      case QETH_LINK_TYPE_10GBIT_ETH:
            ecmd->supported |= SUPPORTED_10baseT_Half |
                              SUPPORTED_10baseT_Full |
                              SUPPORTED_100baseT_Half |
                              SUPPORTED_100baseT_Full |
                              SUPPORTED_1000baseT_Half |
                              SUPPORTED_1000baseT_Full |
                              SUPPORTED_10000baseT_Full |
                              SUPPORTED_FIBRE;
            ecmd->advertising |= ADVERTISED_10baseT_Half |
                              ADVERTISED_10baseT_Full |
                              ADVERTISED_100baseT_Half |
                              ADVERTISED_100baseT_Full |
                              ADVERTISED_1000baseT_Half |
                              ADVERTISED_1000baseT_Full |
                              ADVERTISED_10000baseT_Full |
                              ADVERTISED_FIBRE;
            ecmd->speed = SPEED_10000;
            ecmd->port = PORT_FIBRE;
            break;

      default:
            ecmd->supported |= SUPPORTED_10baseT_Half |
                              SUPPORTED_10baseT_Full |
                              SUPPORTED_TP;
            ecmd->advertising |= ADVERTISED_10baseT_Half |
                              ADVERTISED_10baseT_Full |
                              ADVERTISED_TP;
            ecmd->speed = SPEED_10;
            ecmd->port = PORT_TP;
      }

      return 0;
}
EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);

static int __init qeth_core_init(void)
{
      int rc;

      pr_info("loading core functions\n");
      INIT_LIST_HEAD(&qeth_core_card_list.list);
      rwlock_init(&qeth_core_card_list.rwlock);

      rc = qeth_register_dbf_views();
      if (rc)
            goto out_err;
      rc = ccw_driver_register(&qeth_ccw_driver);
      if (rc)
            goto ccw_err;
      rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
      if (rc)
            goto ccwgroup_err;
      rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
                        &driver_attr_group);
      if (rc)
            goto driver_err;
      qeth_core_root_dev = root_device_register("qeth");
      rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
      if (rc)
            goto register_err;

      qeth_core_header_cache = kmem_cache_create("qeth_hdr",
                  sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
      if (!qeth_core_header_cache) {
            rc = -ENOMEM;
            goto slab_err;
      }

      return 0;
slab_err:
      root_device_unregister(qeth_core_root_dev);
register_err:
      driver_remove_file(&qeth_core_ccwgroup_driver.driver,
                     &driver_attr_group);
driver_err:
      ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
ccwgroup_err:
      ccw_driver_unregister(&qeth_ccw_driver);
ccw_err:
      QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
      qeth_unregister_dbf_views();
out_err:
      pr_err("Initializing the qeth device driver failed\n");
      return rc;
}

static void __exit qeth_core_exit(void)
{
      root_device_unregister(qeth_core_root_dev);
      driver_remove_file(&qeth_core_ccwgroup_driver.driver,
                     &driver_attr_group);
      ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
      ccw_driver_unregister(&qeth_ccw_driver);
      kmem_cache_destroy(qeth_core_header_cache);
      qeth_unregister_dbf_views();
      pr_info("core functions removed\n");
}

module_init(qeth_core_init);
module_exit(qeth_core_exit);
MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
MODULE_DESCRIPTION("qeth core functions");
MODULE_LICENSE("GPL");

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