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   1 /*
   2  *  linux/drivers/net/ehea/ehea_main.c
   3  *
   4  *  eHEA ethernet device driver for IBM eServer System p
   5  *
   6  *  (C) Copyright IBM Corp. 2006
   7  *
   8  *  Authors:
   9  *       Christoph Raisch <raisch@de.ibm.com>
  10  *       Jan-Bernd Themann <themann@de.ibm.com>
  11  *       Thomas Klein <tklein@de.ibm.com>
  12  *
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2, or (at your option)
  17  * any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/in.h>
  30 #include <linux/ip.h>
  31 #include <linux/tcp.h>
  32 #include <linux/udp.h>
  33 #include <linux/if.h>
  34 #include <linux/list.h>
  35 #include <linux/if_ether.h>
  36 #include <net/ip.h>
  37
  38 #include "ehea.h"
  39 #include "ehea_qmr.h"
  40 #include "ehea_phyp.h"
  41
  42
  43 MODULE_LICENSE("GPL");
  44 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
  45 MODULE_DESCRIPTION("IBM eServer HEA Driver");
  46 MODULE_VERSION(DRV_VERSION);
  47
  48
  49 static int msg_level = -1;
  50 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
  51 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
  52 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
  53 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
  54
  55 module_param(msg_level, int, 0);
  56 module_param(rq1_entries, int, 0);
  57 module_param(rq2_entries, int, 0);
  58 module_param(rq3_entries, int, 0);
  59 module_param(sq_entries, int, 0);
  60
  61 MODULE_PARM_DESC(msg_level, "msg_level");
  62 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
  63                  "[2^x - 1], x = [6..14]. Default = "
  64                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
  65 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
  66                  "[2^x - 1], x = [6..14]. Default = "
  67                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
  68 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
  69                  "[2^x - 1], x = [6..14]. Default = "
  70                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
  71 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue  "
  72                  "[2^x - 1], x = [6..14]. Default = "
  73                  __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
  74
  75 void ehea_dump(void *adr, int len, char *msg) {
  76         int x;
  77         unsigned char *deb = adr;
  78         for (x = 0; x < len; x += 16) {
  79                 printk(DRV_NAME "%s adr=%p ofs=%04x %016lx %016lx\n", msg,
  80                           deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
  81                 deb += 16;
  82         }
  83 }
  84
  85 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
  86 {
  87         struct ehea_port *port = netdev_priv(dev);
  88         struct net_device_stats *stats = &port->stats;
  89         struct hcp_ehea_port_cb2 *cb2;
  90         u64 hret, rx_packets;
  91         int i;
  92
  93         memset(stats, 0, sizeof(*stats));
  94
  95         cb2 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
  96         if (!cb2) {
  97                 ehea_error("no mem for cb2");
  98                 goto out;
  99         }
 100
 101         hret = ehea_h_query_ehea_port(port->adapter->handle,
 102                                       port->logical_port_id,
 103                                       H_PORT_CB2, H_PORT_CB2_ALL, cb2);
 104         if (hret != H_SUCCESS) {
 105                 ehea_error("query_ehea_port failed");
 106                 goto out_herr;
 107         }
 108
 109         if (netif_msg_hw(port))
 110                 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
 111
 112         rx_packets = 0;
 113         for (i = 0; i < port->num_def_qps; i++)
 114                 rx_packets += port->port_res[i].rx_packets;
 115
 116         stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
 117         stats->multicast = cb2->rxmcp;
 118         stats->rx_errors = cb2->rxuerr;
 119         stats->rx_bytes = cb2->rxo;
 120         stats->tx_bytes = cb2->txo;
 121         stats->rx_packets = rx_packets;
 122
 123 out_herr:
 124         kfree(cb2);
 125 out:
 126         return stats;
 127 }
 128
 129 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 130 {
 131         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 132         struct net_device *dev = pr->port->netdev;
 133         int max_index_mask = pr->rq1_skba.len - 1;
 134         int i;
 135
 136         if (!nr_of_wqes)
 137                 return;
 138
 139         for (i = 0; i < nr_of_wqes; i++) {
 140                 if (!skb_arr_rq1[index]) {
 141                         skb_arr_rq1[index] = netdev_alloc_skb(dev,
 142                                                               EHEA_L_PKT_SIZE);
 143                         if (!skb_arr_rq1[index]) {
 144                                 ehea_error("%s: no mem for skb/%d wqes filled",
 145                                            dev->name, i);
 146                                 break;
 147                         }
 148                 }
 149                 index--;
 150                 index &= max_index_mask;
 151         }
 152         /* Ring doorbell */
 153         ehea_update_rq1a(pr->qp, i);
 154 }
 155
 156 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 157 {
 158         int ret = 0;
 159         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 160         struct net_device *dev = pr->port->netdev;
 161         int i;
 162
 163         for (i = 0; i < pr->rq1_skba.len; i++) {
 164                 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
 165                 if (!skb_arr_rq1[i]) {
 166                         ehea_error("%s: no mem for skb/%d wqes filled",
 167                                    dev->name, i);
 168                         ret = -ENOMEM;
 169                         goto out;
 170                 }
 171         }
 172         /* Ring doorbell */
 173         ehea_update_rq1a(pr->qp, nr_rq1a);
 174 out:
 175         return ret;
 176 }
 177
 178 static int ehea_refill_rq_def(struct ehea_port_res *pr,
 179                               struct ehea_q_skb_arr *q_skba, int rq_nr,
 180                               int num_wqes, int wqe_type, int packet_size)
 181 {
 182         struct net_device *dev = pr->port->netdev;
 183         struct ehea_qp *qp = pr->qp;
 184         struct sk_buff **skb_arr = q_skba->arr;
 185         struct ehea_rwqe *rwqe;
 186         int i, index, max_index_mask, fill_wqes;
 187         int ret = 0;
 188
 189         fill_wqes = q_skba->os_skbs + num_wqes;
 190
 191         if (!fill_wqes)
 192                 return ret;
 193
 194         index = q_skba->index;
 195         max_index_mask = q_skba->len - 1;
 196         for (i = 0; i < fill_wqes; i++) {
 197                 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
 198                 if (!skb) {
 199                         ehea_error("%s: no mem for skb/%d wqes filled",
 200                                    dev->name, i);
 201                         q_skba->os_skbs = fill_wqes - i;
 202                         ret = -ENOMEM;
 203                         break;
 204                 }
 205                 skb_reserve(skb, NET_IP_ALIGN);
 206
 207                 skb_arr[index] = skb;
 208
 209                 rwqe = ehea_get_next_rwqe(qp, rq_nr);
 210                 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
 211                             | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
 212                 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
 213                 rwqe->sg_list[0].vaddr = (u64)skb->data;
 214                 rwqe->sg_list[0].len = packet_size;
 215                 rwqe->data_segments = 1;
 216
 217                 index++;
 218                 index &= max_index_mask;
 219         }
 220         q_skba->index = index;
 221
 222         /* Ring doorbell */
 223         iosync();
 224         if (rq_nr == 2)
 225                 ehea_update_rq2a(pr->qp, i);
 226         else
 227                 ehea_update_rq3a(pr->qp, i);
 228
 229         return ret;
 230 }
 231
 232
 233 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
 234 {
 235         return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
 236                                   nr_of_wqes, EHEA_RWQE2_TYPE,
 237                                   EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
 238 }
 239
 240
 241 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
 242 {
 243         return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
 244                                   nr_of_wqes, EHEA_RWQE3_TYPE,
 245                                   EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
 246 }
 247
 248 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
 249 {
 250         *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
 251         if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
 252                 return 0;
 253         if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
 254             (cqe->header_length == 0))
 255                 return 0;
 256         return -EINVAL;
 257 }
 258
 259 static inline void ehea_fill_skb(struct net_device *dev,
 260                                  struct sk_buff *skb, struct ehea_cqe *cqe)
 261 {
 262         int length = cqe->num_bytes_transfered - 4;     /*remove CRC */
 263
 264         skb_put(skb, length);
 265         skb->ip_summed = CHECKSUM_UNNECESSARY;
 266         skb->protocol = eth_type_trans(skb, dev);
 267 }
 268
 269 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
 270                                                int arr_len,
 271                                                struct ehea_cqe *cqe)
 272 {
 273         int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 274         struct sk_buff *skb;
 275         void *pref;
 276         int x;
 277
 278         x = skb_index + 1;
 279         x &= (arr_len - 1);
 280
 281         pref = skb_array[x];
 282         prefetchw(pref);
 283         prefetchw(pref + EHEA_CACHE_LINE);
 284
 285         pref = (skb_array[x]->data);
 286         prefetch(pref);
 287         prefetch(pref + EHEA_CACHE_LINE);
 288         prefetch(pref + EHEA_CACHE_LINE * 2);
 289         prefetch(pref + EHEA_CACHE_LINE * 3);
 290         skb = skb_array[skb_index];
 291         skb_array[skb_index] = NULL;
 292         return skb;
 293 }
 294
 295 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
 296                                                   int arr_len, int wqe_index)
 297 {
 298         struct sk_buff *skb;
 299         void *pref;
 300         int x;
 301
 302         x = wqe_index + 1;
 303         x &= (arr_len - 1);
 304
 305         pref = skb_array[x];
 306         prefetchw(pref);
 307         prefetchw(pref + EHEA_CACHE_LINE);
 308
 309         pref = (skb_array[x]->data);
 310         prefetchw(pref);
 311         prefetchw(pref + EHEA_CACHE_LINE);
 312
 313         skb = skb_array[wqe_index];
 314         skb_array[wqe_index] = NULL;
 315         return skb;
 316 }
 317
 318 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
 319                                  struct ehea_cqe *cqe, int *processed_rq2,
 320                                  int *processed_rq3)
 321 {
 322         struct sk_buff *skb;
 323
 324         if (netif_msg_rx_err(pr->port)) {
 325                 ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
 326                 ehea_dump(cqe, sizeof(*cqe), "CQE");
 327         }
 328
 329         if (rq == 2) {
 330                 *processed_rq2 += 1;
 331                 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
 332                 dev_kfree_skb(skb);
 333         } else if (rq == 3) {
 334                 *processed_rq3 += 1;
 335                 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
 336                 dev_kfree_skb(skb);
 337         }
 338
 339         if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
 340                 ehea_error("Critical receive error. Resetting port.");
 341                 queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
 342                 return 1;
 343         }
 344
 345         return 0;
 346 }
 347
 348 static int ehea_poll(struct net_device *dev, int *budget)
 349 {
 350         struct ehea_port *port = netdev_priv(dev);
 351         struct ehea_port_res *pr = &port->port_res[0];
 352         struct ehea_qp *qp = pr->qp;
 353         struct ehea_cqe *cqe;
 354         struct sk_buff *skb;
 355         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 356         struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
 357         struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
 358         int skb_arr_rq1_len = pr->rq1_skba.len;
 359         int skb_arr_rq2_len = pr->rq2_skba.len;
 360         int skb_arr_rq3_len = pr->rq3_skba.len;
 361         int processed, processed_rq1, processed_rq2, processed_rq3;
 362         int wqe_index, last_wqe_index, rq, intreq, my_quota, port_reset;
 363
 364         processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
 365         last_wqe_index = 0;
 366         my_quota = min(*budget, dev->quota);
 367         my_quota = min(my_quota, EHEA_POLL_MAX_RWQE);
 368
 369         /* rq0 is low latency RQ */
 370         cqe = ehea_poll_rq1(qp, &wqe_index);
 371         while ((my_quota > 0) && cqe) {
 372                 ehea_inc_rq1(qp);
 373                 processed_rq1++;
 374                 processed++;
 375                 my_quota--;
 376                 if (netif_msg_rx_status(port))
 377                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 378
 379                 last_wqe_index = wqe_index;
 380                 rmb();
 381                 if (!ehea_check_cqe(cqe, &rq)) {
 382                         if (rq == 1) {  /* LL RQ1 */
 383                                 skb = get_skb_by_index_ll(skb_arr_rq1,
 384                                                           skb_arr_rq1_len,
 385                                                           wqe_index);
 386                                 if (unlikely(!skb)) {
 387                                         if (netif_msg_rx_err(port))
 388                                                 ehea_error("LL rq1: skb=NULL");
 389                                         skb = netdev_alloc_skb(dev,
 390                                                                EHEA_L_PKT_SIZE);
 391                                         if (!skb)
 392                                                 break;
 393                                 }
 394                                 memcpy(skb->data, ((char*)cqe) + 64,
 395                                        cqe->num_bytes_transfered - 4);
 396                                 ehea_fill_skb(dev, skb, cqe);
 397                         } else if (rq == 2) {  /* RQ2 */
 398                                 skb = get_skb_by_index(skb_arr_rq2,
 399                                                        skb_arr_rq2_len, cqe);
 400                                 if (unlikely(!skb)) {
 401                                         if (netif_msg_rx_err(port))
 402                                                 ehea_error("rq2: skb=NULL");
 403                                         break;
 404                                 }
 405                                 ehea_fill_skb(dev, skb, cqe);
 406                                 processed_rq2++;
 407                         } else {  /* RQ3 */
 408                                 skb = get_skb_by_index(skb_arr_rq3,
 409                                                        skb_arr_rq3_len, cqe);
 410                                 if (unlikely(!skb)) {
 411                                         if (netif_msg_rx_err(port))
 412                                                 ehea_error("rq3: skb=NULL");
 413                                         break;
 414                                 }
 415                                 ehea_fill_skb(dev, skb, cqe);
 416                                 processed_rq3++;
 417                         }
 418
 419                         if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
 420                                 vlan_hwaccel_receive_skb(skb, port->vgrp,
 421                                                          cqe->vlan_tag);
 422                         else
 423                                 netif_receive_skb(skb);
 424
 425                 } else { /* Error occured */
 426                         pr->p_state.poll_receive_errors++;
 427                         port_reset = ehea_treat_poll_error(pr, rq, cqe,
 428                                                            &processed_rq2,
 429                                                            &processed_rq3);
 430                         if (port_reset)
 431                                 break;
 432                 }
 433                 cqe = ehea_poll_rq1(qp, &wqe_index);
 434         }
 435
 436         dev->quota -= processed;
 437         *budget -= processed;
 438
 439         pr->p_state.ehea_poll += 1;
 440         pr->rx_packets += processed;
 441
 442         ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
 443         ehea_refill_rq2(pr, processed_rq2);
 444         ehea_refill_rq3(pr, processed_rq3);
 445
 446         intreq = ((pr->p_state.ehea_poll & 0xF) == 0xF);
 447
 448         if (!cqe || intreq) {
 449                 netif_rx_complete(dev);
 450                 ehea_reset_cq_ep(pr->recv_cq);
 451                 ehea_reset_cq_n1(pr->recv_cq);
 452                 cqe = hw_qeit_get_valid(&qp->hw_rqueue1);
 453                 if (!cqe || intreq)
 454                         return 0;
 455                 if (!netif_rx_reschedule(dev, my_quota))
 456                         return 0;
 457         }
 458         return 1;
 459 }
 460
 461 void free_sent_skbs(struct ehea_cqe *cqe, struct ehea_port_res *pr)
 462 {
 463         struct sk_buff *skb;
 464         int index, max_index_mask, i;
 465
 466         index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 467         max_index_mask = pr->sq_skba.len - 1;
 468         for (i = 0; i < EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); i++) {
 469                 skb = pr->sq_skba.arr[index];
 470                 if (likely(skb)) {
 471                         dev_kfree_skb(skb);
 472                         pr->sq_skba.arr[index] = NULL;
 473                 } else {
 474                         ehea_error("skb=NULL, wr_id=%lX, loop=%d, index=%d",
 475                                    cqe->wr_id, i, index);
 476                 }
 477                 index--;
 478                 index &= max_index_mask;
 479         }
 480 }
 481
 482 #define MAX_SENDCOMP_QUOTA 400
 483 void ehea_send_irq_tasklet(unsigned long data)
 484 {
 485         struct ehea_port_res *pr = (struct ehea_port_res*)data;
 486         struct ehea_cq *send_cq = pr->send_cq;
 487         struct ehea_cqe *cqe;
 488         int quota = MAX_SENDCOMP_QUOTA;
 489         int cqe_counter = 0;
 490         int swqe_av = 0;
 491         unsigned long flags;
 492
 493         do {
 494                 cqe = ehea_poll_cq(send_cq);
 495                 if (!cqe) {
 496                         ehea_reset_cq_ep(send_cq);
 497                         ehea_reset_cq_n1(send_cq);
 498                         cqe = ehea_poll_cq(send_cq);
 499                         if (!cqe)
 500                                 break;
 501                 }
 502                 cqe_counter++;
 503                 rmb();
 504                 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
 505                         ehea_error("Send Completion Error: Resetting port");
 506                         if (netif_msg_tx_err(pr->port))
 507                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
 508                         queue_work(pr->port->adapter->ehea_wq,
 509                                    &pr->port->reset_task);
 510                         break;
 511                 }
 512
 513                 if (netif_msg_tx_done(pr->port))
 514                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 515
 516                 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
 517                            == EHEA_SWQE2_TYPE))
 518                         free_sent_skbs(cqe, pr);
 519
 520                 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
 521                 quota--;
 522         } while (quota > 0);
 523
 524         ehea_update_feca(send_cq, cqe_counter);
 525         atomic_add(swqe_av, &pr->swqe_avail);
 526
 527         spin_lock_irqsave(&pr->netif_queue, flags);
 528         if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
 529                                   >= pr->swqe_refill_th)) {
 530                 netif_wake_queue(pr->port->netdev);
 531                 pr->queue_stopped = 0;
 532         }
 533         spin_unlock_irqrestore(&pr->netif_queue, flags);
 534
 535         if (unlikely(cqe))
 536                 tasklet_hi_schedule(&pr->send_comp_task);
 537 }
 538
 539 static irqreturn_t ehea_send_irq_handler(int irq, void *param,
 540                                          struct pt_regs *regs)
 541 {
 542         struct ehea_port_res *pr = param;
 543         tasklet_hi_schedule(&pr->send_comp_task);
 544         return IRQ_HANDLED;
 545 }
 546
 547 static irqreturn_t ehea_recv_irq_handler(int irq, void *param,
 548                                          struct pt_regs *regs)
 549 {
 550         struct ehea_port_res *pr = param;
 551         struct ehea_port *port = pr->port;
 552         netif_rx_schedule(port->netdev);
 553         return IRQ_HANDLED;
 554 }
 555
 556 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param,
 557                                            struct pt_regs *regs)
 558 {
 559         struct ehea_port *port = param;
 560         struct ehea_eqe *eqe;
 561         u32 qp_token;
 562
 563         eqe = ehea_poll_eq(port->qp_eq);
 564         ehea_debug("eqe=%p", eqe);
 565         while (eqe) {
 566                 ehea_debug("*eqe=%lx", *(u64*)eqe);
 567                 eqe = ehea_poll_eq(port->qp_eq);
 568                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 569                 ehea_debug("next eqe=%p", eqe);
 570         }
 571
 572         return IRQ_HANDLED;
 573 }
 574
 575 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 576                                        int logical_port)
 577 {
 578         int i;
 579
 580         for (i = 0; i < adapter->num_ports; i++)
 581                 if (adapter->port[i]->logical_port_id == logical_port)
 582                         return adapter->port[i];
 583         return NULL;
 584 }
 585
 586 int ehea_sense_port_attr(struct ehea_port *port)
 587 {
 588         int ret;
 589         u64 hret;
 590         struct hcp_ehea_port_cb0 *cb0;
 591
 592         cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 593         if (!cb0) {
 594                 ehea_error("no mem for cb0");
 595                 ret = -ENOMEM;
 596                 goto out;
 597         }
 598
 599         hret = ehea_h_query_ehea_port(port->adapter->handle,
 600                                       port->logical_port_id, H_PORT_CB0,
 601                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 602                                       cb0);
 603         if (hret != H_SUCCESS) {
 604                 ret = -EIO;
 605                 goto out_free;
 606         }
 607
 608         /* MAC address */
 609         port->mac_addr = cb0->port_mac_addr << 16;
 610
 611         if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
 612                 ret = -EADDRNOTAVAIL;
 613                 goto out_free;
 614         }
 615
 616         /* Port speed */
 617         switch (cb0->port_speed) {
 618         case H_SPEED_10M_H:
 619                 port->port_speed = EHEA_SPEED_10M;
 620                 port->full_duplex = 0;
 621                 break;
 622         case H_SPEED_10M_F:
 623                 port->port_speed = EHEA_SPEED_10M;
 624                 port->full_duplex = 1;
 625                 break;
 626         case H_SPEED_100M_H:
 627                 port->port_speed = EHEA_SPEED_100M;
 628                 port->full_duplex = 0;
 629                 break;
 630         case H_SPEED_100M_F:
 631                 port->port_speed = EHEA_SPEED_100M;
 632                 port->full_duplex = 1;
 633                 break;
 634         case H_SPEED_1G_F:
 635                 port->port_speed = EHEA_SPEED_1G;
 636                 port->full_duplex = 1;
 637                 break;
 638         case H_SPEED_10G_F:
 639                 port->port_speed = EHEA_SPEED_10G;
 640                 port->full_duplex = 1;
 641                 break;
 642         default:
 643                 port->port_speed = 0;
 644                 port->full_duplex = 0;
 645                 break;
 646         }
 647
 648         /* Number of default QPs */
 649         port->num_def_qps = cb0->num_default_qps;
 650
 651         if (!port->num_def_qps) {
 652                 ret = -EINVAL;
 653                 goto out_free;
 654         }
 655
 656         if (port->num_def_qps >= EHEA_NUM_TX_QP)
 657                 port->num_add_tx_qps = 0;
 658         else
 659                 port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
 660
 661         ret = 0;
 662 out_free:
 663         if (ret || netif_msg_probe(port))
 664                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
 665         kfree(cb0);
 666 out:
 667         return ret;
 668 }
 669
 670 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
 671 {
 672         struct hcp_ehea_port_cb4 *cb4;
 673         u64 hret;
 674         int ret = 0;
 675
 676         cb4 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 677         if (!cb4) {
 678                 ehea_error("no mem for cb4");
 679                 ret = -ENOMEM;
 680                 goto out;
 681         }
 682
 683         cb4->port_speed = port_speed;
 684
 685         netif_carrier_off(port->netdev);
 686
 687         hret = ehea_h_modify_ehea_port(port->adapter->handle,
 688                                        port->logical_port_id,
 689                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
 690         if (hret == H_SUCCESS) {
 691                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
 692
 693                 hret = ehea_h_query_ehea_port(port->adapter->handle,
 694                                               port->logical_port_id,
 695                                               H_PORT_CB4, H_PORT_CB4_SPEED,
 696                                               cb4);
 697                 if (hret == H_SUCCESS) {
 698                         switch (cb4->port_speed) {
 699                         case H_SPEED_10M_H:
 700                                 port->port_speed = EHEA_SPEED_10M;
 701                                 port->full_duplex = 0;
 702                                 break;
 703                         case H_SPEED_10M_F:
 704                                 port->port_speed = EHEA_SPEED_10M;
 705                                 port->full_duplex = 1;
 706                                 break;
 707                         case H_SPEED_100M_H:
 708                                 port->port_speed = EHEA_SPEED_100M;
 709                                 port->full_duplex = 0;
 710                                 break;
 711                         case H_SPEED_100M_F:
 712                                 port->port_speed = EHEA_SPEED_100M;
 713                                 port->full_duplex = 1;
 714                                 break;
 715                         case H_SPEED_1G_F:
 716                                 port->port_speed = EHEA_SPEED_1G;
 717                                 port->full_duplex = 1;
 718                                 break;
 719                         case H_SPEED_10G_F:
 720                                 port->port_speed = EHEA_SPEED_10G;
 721                                 port->full_duplex = 1;
 722                                 break;
 723                         default:
 724                                 port->port_speed = 0;
 725                                 port->full_duplex = 0;
 726                                 break;
 727                         }
 728                 } else {
 729                         ehea_error("Failed sensing port speed");
 730                         ret = -EIO;
 731                 }
 732         } else {
 733                 if (hret == H_AUTHORITY) {
 734                         ehea_info("Hypervisor denied setting port speed. Either"
 735                                   " this partition is not authorized to set "
 736                                   "port speed or another partition has modified"
 737                                   " port speed first.");
 738                         ret = -EPERM;
 739                 } else {
 740                         ret = -EIO;
 741                         ehea_error("Failed setting port speed");
 742                 }
 743         }
 744         netif_carrier_on(port->netdev);
 745         kfree(cb4);
 746 out:
 747         return ret;
 748 }
 749
 750 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
 751 {
 752         int ret;
 753         u8 ec;
 754         u8 portnum;
 755         struct ehea_port *port;
 756
 757         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
 758         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
 759         port = ehea_get_port(adapter, portnum);
 760
 761         switch (ec) {
 762         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
 763
 764                 if (!port) {
 765                         ehea_error("unknown portnum %x", portnum);
 766                         break;
 767                 }
 768
 769                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
 770                         if (!netif_carrier_ok(port->netdev)) {
 771                                 ret = ehea_sense_port_attr(
 772                                         adapter->port[portnum]);
 773                                 if (ret) {
 774                                         ehea_error("failed resensing port "
 775                                                    "attributes");
 776                                         break;
 777                                 }
 778
 779                                 if (netif_msg_link(port))
 780                                         ehea_info("%s: Logical port up: %dMbps "
 781                                                   "%s Duplex",
 782                                                   port->netdev->name,
 783                                                   port->port_speed,
 784                                                   port->full_duplex ==
 785                                                   1 ? "Full" : "Half");
 786
 787                                 netif_carrier_on(port->netdev);
 788                                 netif_wake_queue(port->netdev);
 789                         }
 790                 } else
 791                         if (netif_carrier_ok(port->netdev)) {
 792                                 if (netif_msg_link(port))
 793                                         ehea_info("%s: Logical port down",
 794                                                   port->netdev->name);
 795                                 netif_carrier_off(port->netdev);
 796                                 netif_stop_queue(port->netdev);
 797                         }
 798
 799                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
 800                         if (netif_msg_link(port))
 801                                 ehea_info("%s: Physical port up",
 802                                           port->netdev->name);
 803                 } else {
 804                         if (netif_msg_link(port))
 805                                 ehea_info("%s: Physical port down",
 806                                           port->netdev->name);
 807                 }
 808
 809                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
 810                         ehea_info("External switch port is primary port");
 811                 else
 812                         ehea_info("External switch port is backup port");
 813
 814                 break;
 815         case EHEA_EC_ADAPTER_MALFUNC:
 816                 ehea_error("Adapter malfunction");
 817                 break;
 818         case EHEA_EC_PORT_MALFUNC:
 819                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
 820                 netif_carrier_off(port->netdev);
 821                 netif_stop_queue(port->netdev);
 822                 break;
 823         default:
 824                 ehea_error("unknown event code %x", ec);
 825                 break;
 826         }
 827 }
 828
 829 static void ehea_neq_tasklet(unsigned long data)
 830 {
 831         struct ehea_adapter *adapter = (struct ehea_adapter*)data;
 832         struct ehea_eqe *eqe;
 833         u64 event_mask;
 834
 835         eqe = ehea_poll_eq(adapter->neq);
 836         ehea_debug("eqe=%p", eqe);
 837
 838         while (eqe) {
 839                 ehea_debug("*eqe=%lx", eqe->entry);
 840                 ehea_parse_eqe(adapter, eqe->entry);
 841                 eqe = ehea_poll_eq(adapter->neq);
 842                 ehea_debug("next eqe=%p", eqe);
 843         }
 844
 845         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
 846                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
 847                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
 848
 849         ehea_h_reset_events(adapter->handle,
 850                             adapter->neq->fw_handle, event_mask);
 851 }
 852
 853 static irqreturn_t ehea_interrupt_neq(int irq, void *param,
 854                                       struct pt_regs *regs)
 855 {
 856         struct ehea_adapter *adapter = param;
 857         tasklet_hi_schedule(&adapter->neq_tasklet);
 858         return IRQ_HANDLED;
 859 }
 860
 861
 862 static int ehea_fill_port_res(struct ehea_port_res *pr)
 863 {
 864         int ret;
 865         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
 866
 867         ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
 868                                      - init_attr->act_nr_rwqes_rq2
 869                                      - init_attr->act_nr_rwqes_rq3 - 1);
 870
 871         ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
 872
 873         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
 874
 875         return ret;
 876 }
 877
 878 static int ehea_reg_interrupts(struct net_device *dev)
 879 {
 880         struct ehea_port *port = netdev_priv(dev);
 881         struct ehea_port_res *pr;
 882         int i, ret;
 883
 884         for (i = 0; i < port->num_def_qps; i++) {
 885                 pr = &port->port_res[i];
 886                 snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
 887                          , "%s-recv%d", dev->name, i);
 888                 ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
 889                                           ehea_recv_irq_handler,
 890                                           SA_INTERRUPT, pr->int_recv_name, pr);
 891                 if (ret) {
 892                         ehea_error("failed registering irq for ehea_recv_int:"
 893                                    "port_res_nr:%d, ist=%X", i,
 894                                    pr->recv_eq->attr.ist1);
 895                         goto out_free_seq;
 896                 }
 897                 if (netif_msg_ifup(port))
 898                         ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
 899                                   "registered", pr->recv_eq->attr.ist1, i);
 900         }
 901
 902         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
 903                  dev->name);
 904
 905         ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
 906                                   ehea_qp_aff_irq_handler,
 907                                   SA_INTERRUPT, port->int_aff_name, port);
 908         if (ret) {
 909                 ehea_error("failed registering irq for qp_aff_irq_handler:"
 910                            "ist=%X", port->qp_eq->attr.ist1);
 911                 goto out_free_qpeq;
 912         }
 913
 914         if (netif_msg_ifup(port))
 915                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
 916                           "registered", port->qp_eq->attr.ist1);
 917
 918         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 919                 pr = &port->port_res[i];
 920                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
 921                          "%s-send%d", dev->name, i);
 922                 ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
 923                                           ehea_send_irq_handler,
 924                                           SA_INTERRUPT, pr->int_send_name,
 925                                           pr);
 926                 if (ret) {
 927                         ehea_error("failed registering irq for ehea_send "
 928                                    "port_res_nr:%d, ist=%X", i,
 929                                    pr->send_eq->attr.ist1);
 930                         goto out_free_req;
 931                 }
 932                 if (netif_msg_ifup(port))
 933                         ehea_info("irq_handle 0x%X for function ehea_send_int "
 934                                   "%d registered", pr->send_eq->attr.ist1, i);
 935         }
 936 out:
 937         return ret;
 938
 939 out_free_req:
 940         while (--i >= 0) {
 941                 u32 ist = port->port_res[i].send_eq->attr.ist1;
 942                 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
 943         }
 944 out_free_qpeq:
 945         ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
 946         i = port->num_def_qps;
 947 out_free_seq:
 948         while (--i >= 0) {
 949                 u32 ist = port->port_res[i].recv_eq->attr.ist1;
 950                 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
 951         }
 952         goto out;
 953 }
 954
 955 static void ehea_free_interrupts(struct net_device *dev)
 956 {
 957         struct ehea_port *port = netdev_priv(dev);
 958         struct ehea_port_res *pr;
 959         int i;
 960
 961         /* send */
 962         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 963                 pr = &port->port_res[i];
 964                 ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
 965                 if (netif_msg_intr(port))
 966                         ehea_info("free send irq for res %d with handle 0x%X",
 967                                   i, pr->send_eq->attr.ist1);
 968         }
 969
 970         /* receive */
 971         for (i = 0; i < port->num_def_qps; i++) {
 972                 pr = &port->port_res[i];
 973                 ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
 974                 if (netif_msg_intr(port))
 975                         ehea_info("free recv irq for res %d with handle 0x%X",
 976                                   i, pr->recv_eq->attr.ist1);
 977         }
 978
 979         /* associated events */
 980         ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
 981         if (netif_msg_intr(port))
 982                 ehea_info("associated event interrupt for handle 0x%X freed",
 983                           port->qp_eq->attr.ist1);
 984 }
 985
 986 static int ehea_configure_port(struct ehea_port *port)
 987 {
 988         int ret, i;
 989         u64 hret, mask;
 990         struct hcp_ehea_port_cb0 *cb0;
 991
 992         ret = -ENOMEM;
 993         cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
 994         if (!cb0)
 995                 goto out;
 996
 997         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
 998                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
 999                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1000                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1001                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1002                                       PXLY_RC_VLAN_FILTER)
1003                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1004
1005         for (i = 0; i < port->num_def_qps; i++)
1006                 cb0->default_qpn_arr[i] = port->port_res[i].qp->init_attr.qp_nr;
1007
1008         if (netif_msg_ifup(port))
1009                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1010
1011         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1012              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1013
1014         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1015                                        port->logical_port_id,
1016                                        H_PORT_CB0, mask, cb0);
1017         ret = -EIO;
1018         if (hret != H_SUCCESS)
1019                 goto out_free;
1020
1021         ret = 0;
1022
1023 out_free:
1024         kfree(cb0);
1025 out:
1026         return ret;
1027 }
1028
1029 static int ehea_gen_smrs(struct ehea_port_res *pr)
1030 {
1031         u64 hret;
1032         struct ehea_adapter *adapter = pr->port->adapter;
1033
1034         hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1035                                    adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1036                                    adapter->pd, &pr->send_mr);
1037         if (hret != H_SUCCESS)
1038                 goto out;
1039
1040         hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1041                                    adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1042                                    adapter->pd, &pr->recv_mr);
1043         if (hret != H_SUCCESS)
1044                 goto out_freeres;
1045
1046         return 0;
1047
1048 out_freeres:
1049         hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1050         if (hret != H_SUCCESS)
1051                 ehea_error("failed freeing SMR");
1052 out:
1053         return -EIO;
1054 }
1055
1056 static int ehea_rem_smrs(struct ehea_port_res *pr)
1057 {
1058         struct ehea_adapter *adapter = pr->port->adapter;
1059         int ret = 0;
1060         u64 hret;
1061
1062         hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1063         if (hret != H_SUCCESS) {
1064                 ret = -EIO;
1065                 ehea_error("failed freeing send SMR for pr=%p", pr);
1066         }
1067
1068         hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
1069         if (hret != H_SUCCESS) {
1070                 ret = -EIO;
1071                 ehea_error("failed freeing recv SMR for pr=%p", pr);
1072         }
1073
1074         return ret;
1075 }
1076
1077 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1078 {
1079         int arr_size = sizeof(void*) * max_q_entries;
1080
1081         q_skba->arr = vmalloc(arr_size);
1082         if (!q_skba->arr)
1083                 return -ENOMEM;
1084
1085         memset(q_skba->arr, 0, arr_size);
1086
1087         q_skba->len = max_q_entries;
1088         q_skba->index = 0;
1089         q_skba->os_skbs = 0;
1090
1091         return 0;
1092 }
1093
1094 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1095                               struct port_res_cfg *pr_cfg, int queue_token)
1096 {
1097         struct ehea_adapter *adapter = port->adapter;
1098         enum ehea_eq_type eq_type = EHEA_EQ;
1099         struct ehea_qp_init_attr *init_attr = NULL;
1100         int ret = -EIO;
1101
1102         memset(pr, 0, sizeof(struct ehea_port_res));
1103
1104         pr->port = port;
1105         spin_lock_init(&pr->send_lock);
1106         spin_lock_init(&pr->recv_lock);
1107         spin_lock_init(&pr->xmit_lock);
1108         spin_lock_init(&pr->netif_queue);
1109
1110         pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1111         if (!pr->recv_eq) {
1112                 ehea_error("create_eq failed (recv_eq)");
1113                 goto out_free;
1114         }
1115
1116         pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1117         if (!pr->send_eq) {
1118                 ehea_error("create_eq failed (send_eq)");
1119                 goto out_free;
1120         }
1121
1122         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1123                                      pr->recv_eq->fw_handle,
1124                                      port->logical_port_id);
1125         if (!pr->recv_cq) {
1126                 ehea_error("create_cq failed (cq_recv)");
1127                 goto out_free;
1128         }
1129
1130         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1131                                      pr->send_eq->fw_handle,
1132                                      port->logical_port_id);
1133         if (!pr->send_cq) {
1134                 ehea_error("create_cq failed (cq_send)");
1135                 goto out_free;
1136         }
1137
1138         if (netif_msg_ifup(port))
1139                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1140                           pr->send_cq->attr.act_nr_of_cqes,
1141                           pr->recv_cq->attr.act_nr_of_cqes);
1142
1143         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1144         if (!init_attr) {
1145                 ret = -ENOMEM;
1146                 ehea_error("no mem for ehea_qp_init_attr");
1147                 goto out_free;
1148         }
1149
1150         init_attr->low_lat_rq1 = 1;
1151         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1152         init_attr->rq_count = 3;
1153         init_attr->qp_token = queue_token;
1154         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1155         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1156         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1157         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1158         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1159         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1160         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1161         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1162         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1163         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1164         init_attr->port_nr = port->logical_port_id;
1165         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1166         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1167         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1168
1169         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1170         if (!pr->qp) {
1171                 ehea_error("create_qp failed");
1172                 ret = -EIO;
1173                 goto out_free;
1174         }
1175
1176         if (netif_msg_ifup(port))
1177                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1178                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1179                           init_attr->act_nr_send_wqes,
1180                           init_attr->act_nr_rwqes_rq1,
1181                           init_attr->act_nr_rwqes_rq2,
1182                           init_attr->act_nr_rwqes_rq3);
1183
1184         ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1185         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1186         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1187         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1188         if (ret)
1189                 goto out_free;
1190
1191         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1192         if (ehea_gen_smrs(pr) != 0) {
1193                 ret = -EIO;
1194                 goto out_free;
1195         }
1196         tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
1197                      (unsigned long)pr);
1198         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1199
1200         kfree(init_attr);
1201         ret = 0;
1202         goto out;
1203
1204 out_free:
1205         kfree(init_attr);
1206         vfree(pr->sq_skba.arr);
1207         vfree(pr->rq1_skba.arr);
1208         vfree(pr->rq2_skba.arr);
1209         vfree(pr->rq3_skba.arr);
1210         ehea_destroy_qp(pr->qp);
1211         ehea_destroy_cq(pr->send_cq);
1212         ehea_destroy_cq(pr->recv_cq);
1213         ehea_destroy_eq(pr->send_eq);
1214         ehea_destroy_eq(pr->recv_eq);
1215 out:
1216         return ret;
1217 }
1218
1219 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1220 {
1221         int ret, i;
1222
1223         ret = ehea_destroy_qp(pr->qp);
1224
1225         if (!ret) {
1226                 ehea_destroy_cq(pr->send_cq);
1227                 ehea_destroy_cq(pr->recv_cq);
1228                 ehea_destroy_eq(pr->send_eq);
1229                 ehea_destroy_eq(pr->recv_eq);
1230
1231                 for (i = 0; i < pr->rq1_skba.len; i++)
1232                         if (pr->rq1_skba.arr[i])
1233                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1234
1235                 for (i = 0; i < pr->rq2_skba.len; i++)
1236                         if (pr->rq2_skba.arr[i])
1237                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1238
1239                 for (i = 0; i < pr->rq3_skba.len; i++)
1240                         if (pr->rq3_skba.arr[i])
1241                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1242
1243                 for (i = 0; i < pr->sq_skba.len; i++)
1244                         if (pr->sq_skba.arr[i])
1245                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1246
1247                 vfree(pr->rq1_skba.arr);
1248                 vfree(pr->rq2_skba.arr);
1249                 vfree(pr->rq3_skba.arr);
1250                 vfree(pr->sq_skba.arr);
1251                 ret = ehea_rem_smrs(pr);
1252         }
1253         return ret;
1254 }
1255
1256 /*
1257  * The write_* functions store information in swqe which is used by
1258  * the hardware to calculate the ip/tcp/udp checksum
1259  */
1260
1261 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1262                                       const struct sk_buff *skb)
1263 {
1264         swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
1265         swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
1266 }
1267
1268 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1269                                         const struct sk_buff *skb)
1270 {
1271         swqe->tcp_offset =
1272                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1273
1274         swqe->tcp_end = (u16)skb->len - 1;
1275 }
1276
1277 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1278                                         const struct sk_buff *skb)
1279 {
1280         swqe->tcp_offset =
1281                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1282
1283         swqe->tcp_end = (u16)skb->len - 1;
1284 }
1285
1286
1287 static void write_swqe2_TSO(struct sk_buff *skb,
1288                             struct ehea_swqe *swqe, u32 lkey)
1289 {
1290         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1291         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1292         int skb_data_size = skb->len - skb->data_len;
1293         int headersize;
1294         u64 tmp_addr;
1295
1296         /* Packet is TCP with TSO enabled */
1297         swqe->tx_control |= EHEA_SWQE_TSO;
1298         swqe->mss = skb_shinfo(skb)->gso_size;
1299         /* copy only eth/ip/tcp headers to immediate data and
1300          * the rest of skb->data to sg1entry
1301          */
1302         headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
1303
1304         skb_data_size = skb->len - skb->data_len;
1305
1306         if (skb_data_size >= headersize) {
1307                 /* copy immediate data */
1308                 memcpy(imm_data, skb->data, headersize);
1309                 swqe->immediate_data_length = headersize;
1310
1311                 if (skb_data_size > headersize) {
1312                         /* set sg1entry data */
1313                         sg1entry->l_key = lkey;
1314                         sg1entry->len = skb_data_size - headersize;
1315
1316                         tmp_addr = (u64)(skb->data + headersize);
1317                         sg1entry->vaddr = tmp_addr;
1318                         swqe->descriptors++;
1319                 }
1320         } else
1321                 ehea_error("cannot handle fragmented headers");
1322 }
1323
1324 static void write_swqe2_nonTSO(struct sk_buff *skb,
1325                                struct ehea_swqe *swqe, u32 lkey)
1326 {
1327         int skb_data_size = skb->len - skb->data_len;
1328         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1329         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1330         u64 tmp_addr;
1331
1332         /* Packet is any nonTSO type
1333          *
1334          * Copy as much as possible skb->data to immediate data and
1335          * the rest to sg1entry
1336          */
1337         if (skb_data_size >= SWQE2_MAX_IMM) {
1338                 /* copy immediate data */
1339                 memcpy(imm_data, skb->data, SWQE2_MAX_IMM);
1340
1341                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1342
1343                 if (skb_data_size > SWQE2_MAX_IMM) {
1344                         /* copy sg1entry data */
1345                         sg1entry->l_key = lkey;
1346                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1347                         tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1348                         sg1entry->vaddr = tmp_addr;
1349                         swqe->descriptors++;
1350                 }
1351         } else {
1352                 memcpy(imm_data, skb->data, skb_data_size);
1353                 swqe->immediate_data_length = skb_data_size;
1354         }
1355 }
1356
1357 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1358                                     struct ehea_swqe *swqe, u32 lkey)
1359 {
1360         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1361         skb_frag_t *frag;
1362         int nfrags, sg1entry_contains_frag_data, i;
1363         u64 tmp_addr;
1364
1365         nfrags = skb_shinfo(skb)->nr_frags;
1366         sg1entry = &swqe->u.immdata_desc.sg_entry;
1367         sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1368         swqe->descriptors = 0;
1369         sg1entry_contains_frag_data = 0;
1370
1371         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1372                 write_swqe2_TSO(skb, swqe, lkey);
1373         else
1374                 write_swqe2_nonTSO(skb, swqe, lkey);
1375
1376         /* write descriptors */
1377         if (nfrags > 0) {
1378                 if (swqe->descriptors == 0) {
1379                         /* sg1entry not yet used */
1380                         frag = &skb_shinfo(skb)->frags[0];
1381
1382                         /* copy sg1entry data */
1383                         sg1entry->l_key = lkey;
1384                         sg1entry->len = frag->size;
1385                         tmp_addr =  (u64)(page_address(frag->page)
1386                                           + frag->page_offset);
1387                         sg1entry->vaddr = tmp_addr;
1388                         swqe->descriptors++;
1389                         sg1entry_contains_frag_data = 1;
1390                 }
1391
1392                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1393
1394                         frag = &skb_shinfo(skb)->frags[i];
1395                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1396
1397                         sgentry->l_key = lkey;
1398                         sgentry->len = frag->size;
1399
1400                         tmp_addr = (u64)(page_address(frag->page)
1401                                          + frag->page_offset);
1402                         sgentry->vaddr = tmp_addr;
1403                         swqe->descriptors++;
1404                 }
1405         }
1406 }
1407
1408 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1409 {
1410         int ret = 0;
1411         u64 hret;
1412         u8 reg_type;
1413
1414         /* De/Register untagged packets */
1415         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1416         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1417                                      port->logical_port_id,
1418                                      reg_type, port->mac_addr, 0, hcallid);
1419         if (hret != H_SUCCESS) {
1420                 ehea_error("reg_dereg_bcmc failed (tagged)");
1421                 ret = -EIO;
1422                 goto out_herr;
1423         }
1424
1425         /* De/Register VLAN packets */
1426         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1427         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1428                                      port->logical_port_id,
1429                                      reg_type, port->mac_addr, 0, hcallid);
1430         if (hret != H_SUCCESS) {
1431                 ehea_error("reg_dereg_bcmc failed (vlan)");
1432                 ret = -EIO;
1433         }
1434 out_herr:
1435         return ret;
1436 }
1437
1438 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1439 {
1440         struct ehea_port *port = netdev_priv(dev);
1441         struct sockaddr *mac_addr = sa;
1442         struct hcp_ehea_port_cb0 *cb0;
1443         int ret;
1444         u64 hret;
1445
1446         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1447                 ret = -EADDRNOTAVAIL;
1448                 goto out;
1449         }
1450
1451         cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1452         if (!cb0) {
1453                 ehea_error("no mem for cb0");
1454                 ret = -ENOMEM;
1455                 goto out;
1456         }
1457
1458         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1459
1460         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1461
1462         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1463                                        port->logical_port_id, H_PORT_CB0,
1464                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1465         if (hret != H_SUCCESS) {
1466                 ret = -EIO;
1467                 goto out_free;
1468         }
1469
1470         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1471
1472         /* Deregister old MAC in pHYP */
1473         ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1474         if (ret)
1475                 goto out_free;
1476
1477         port->mac_addr = cb0->port_mac_addr << 16;
1478
1479         /* Register new MAC in pHYP */
1480         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1481         if (ret)
1482                 goto out_free;
1483
1484         ret = 0;
1485 out_free:
1486         kfree(cb0);
1487 out:
1488         return ret;
1489 }
1490
1491 static void ehea_promiscuous_error(u64 hret, int enable)
1492 {
1493         ehea_info("Hypervisor denied %sabling promiscuous mode.%s",
1494                   enable == 1 ? "en" : "dis",
1495                   hret != H_AUTHORITY ? "" : " Another partition owning a "
1496                   "logical port on the same physical port might have altered "
1497                   "promiscuous mode first.");
1498 }
1499
1500 static void ehea_promiscuous(struct net_device *dev, int enable)
1501 {
1502         struct ehea_port *port = netdev_priv(dev);
1503         struct hcp_ehea_port_cb7 *cb7;
1504         u64 hret;
1505
1506         if ((enable && port->promisc) || (!enable && !port->promisc))
1507                 return;
1508
1509         cb7 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1510         if (!cb7) {
1511                 ehea_error("no mem for cb7");
1512                 goto out;
1513         }
1514
1515         /* Modify Pxs_DUCQPN in CB7 */
1516         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1517
1518         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1519                                        port->logical_port_id,
1520                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1521         if (hret) {
1522                 ehea_promiscuous_error(hret, enable);
1523                 goto out;
1524         }
1525
1526         port->promisc = enable;
1527 out:
1528         kfree(cb7);
1529         return;
1530 }
1531
1532 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1533                                      u32 hcallid)
1534 {
1535         u64 hret;
1536         u8 reg_type;
1537
1538         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1539                  | EHEA_BCMC_UNTAGGED;
1540
1541         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1542                                      port->logical_port_id,
1543                                      reg_type, mc_mac_addr, 0, hcallid);
1544         if (hret)
1545                 goto out;
1546
1547         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1548                  | EHEA_BCMC_VLANID_ALL;
1549
1550         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1551                                      port->logical_port_id,
1552                                      reg_type, mc_mac_addr, 0, hcallid);
1553 out:
1554         return hret;
1555 }
1556
1557 static int ehea_drop_multicast_list(struct net_device *dev)
1558 {
1559         struct ehea_port *port = netdev_priv(dev);
1560         struct ehea_mc_list *mc_entry = port->mc_list;
1561         struct list_head *pos;
1562         struct list_head *temp;
1563         int ret = 0;
1564         u64 hret;
1565
1566         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1567                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1568
1569                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1570                                                  H_DEREG_BCMC);
1571                 if (hret) {
1572                         ehea_error("failed deregistering mcast MAC");
1573                         ret = -EIO;
1574                 }
1575
1576                 list_del(pos);
1577                 kfree(mc_entry);
1578         }
1579         return ret;
1580 }
1581
1582 static void ehea_allmulti(struct net_device *dev, int enable)
1583 {
1584         struct ehea_port *port = netdev_priv(dev);
1585         u64 hret;
1586
1587         if (!port->allmulti) {
1588                 if (enable) {
1589                         /* Enable ALLMULTI */
1590                         ehea_drop_multicast_list(dev);
1591                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1592                         if (!hret)
1593                                 port->allmulti = 1;
1594                         else
1595                                 ehea_error("failed enabling IFF_ALLMULTI");
1596                 }
1597         } else
1598                 if (!enable) {
1599                         /* Disable ALLMULTI */
1600                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1601                         if (!hret)
1602                                 port->allmulti = 0;
1603                         else
1604                                 ehea_error("failed disabling IFF_ALLMULTI");
1605                 }
1606 }
1607
1608 static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1609 {
1610         struct ehea_mc_list *ehea_mcl_entry;
1611         u64 hret;
1612
1613         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_KERNEL);
1614         if (!ehea_mcl_entry) {
1615                 ehea_error("no mem for mcl_entry");
1616                 return;
1617         }
1618
1619         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1620
1621         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1622
1623         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1624                                          H_REG_BCMC);
1625         if (!hret)
1626                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1627         else {
1628                 ehea_error("failed registering mcast MAC");
1629                 kfree(ehea_mcl_entry);
1630         }
1631 }
1632
1633 static void ehea_set_multicast_list(struct net_device *dev)
1634 {
1635         struct ehea_port *port = netdev_priv(dev);
1636         struct dev_mc_list *k_mcl_entry;
1637         int ret, i;
1638
1639         if (dev->flags & IFF_PROMISC) {
1640                 ehea_promiscuous(dev, 1);
1641                 return;
1642         }
1643         ehea_promiscuous(dev, 0);
1644
1645         if (dev->flags & IFF_ALLMULTI) {
1646                 ehea_allmulti(dev, 1);
1647                 return;
1648         }
1649         ehea_allmulti(dev, 0);
1650
1651         if (dev->mc_count) {
1652                 ret = ehea_drop_multicast_list(dev);
1653                 if (ret) {
1654                         /* Dropping the current multicast list failed.
1655                          * Enabling ALL_MULTI is the best we can do.
1656                          */
1657                         ehea_allmulti(dev, 1);
1658                 }
1659
1660                 if (dev->mc_count > port->adapter->max_mc_mac) {
1661                         ehea_info("Mcast registration limit reached (0x%lx). "
1662                                   "Use ALLMULTI!",
1663                                   port->adapter->max_mc_mac);
1664                         goto out;
1665                 }
1666
1667                 for (i = 0, k_mcl_entry = dev->mc_list;
1668                      i < dev->mc_count;
1669                      i++, k_mcl_entry = k_mcl_entry->next) {
1670                         ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1671                 }
1672         }
1673 out:
1674         return;
1675 }
1676
1677 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1678 {
1679         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1680                 return -EINVAL;
1681         dev->mtu = new_mtu;
1682         return 0;
1683 }
1684
1685 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1686                        struct ehea_swqe *swqe, u32 lkey)
1687 {
1688         if (skb->protocol == htons(ETH_P_IP)) {
1689                 /* IPv4 */
1690                 swqe->tx_control |= EHEA_SWQE_CRC
1691                                  | EHEA_SWQE_IP_CHECKSUM
1692                                  | EHEA_SWQE_TCP_CHECKSUM
1693                                  | EHEA_SWQE_IMM_DATA_PRESENT
1694                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
1695
1696                 write_ip_start_end(swqe, skb);
1697
1698                 if (skb->nh.iph->protocol == IPPROTO_UDP) {
1699                         if ((skb->nh.iph->frag_off & IP_MF) ||
1700                             (skb->nh.iph->frag_off & IP_OFFSET))
1701                                 /* IP fragment, so don't change cs */
1702                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1703                         else
1704                                 write_udp_offset_end(swqe, skb);
1705
1706                 } else if (skb->nh.iph->protocol == IPPROTO_TCP) {
1707                         write_tcp_offset_end(swqe, skb);
1708                 }
1709
1710                 /* icmp (big data) and ip segmentation packets (all other ip
1711                    packets) do not require any special handling */
1712
1713         } else {
1714                 /* Other Ethernet Protocol */
1715                 swqe->tx_control |= EHEA_SWQE_CRC
1716                                  | EHEA_SWQE_IMM_DATA_PRESENT
1717                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
1718         }
1719
1720         write_swqe2_data(skb, dev, swqe, lkey);
1721 }
1722
1723 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1724                        struct ehea_swqe *swqe)
1725 {
1726         int nfrags = skb_shinfo(skb)->nr_frags;
1727         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1728         skb_frag_t *frag;
1729         int i;
1730
1731         if (skb->protocol == htons(ETH_P_IP)) {
1732                 /* IPv4 */
1733                 write_ip_start_end(swqe, skb);
1734
1735                 if (skb->nh.iph->protocol == IPPROTO_TCP) {
1736                         swqe->tx_control |= EHEA_SWQE_CRC
1737                                          | EHEA_SWQE_IP_CHECKSUM
1738                                          | EHEA_SWQE_TCP_CHECKSUM
1739                                          | EHEA_SWQE_IMM_DATA_PRESENT;
1740
1741                         write_tcp_offset_end(swqe, skb);
1742
1743                 } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
1744                         if ((skb->nh.iph->frag_off & IP_MF) ||
1745                             (skb->nh.iph->frag_off & IP_OFFSET))
1746                                 /* IP fragment, so don't change cs */
1747                                 swqe->tx_control |= EHEA_SWQE_CRC
1748                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
1749                         else {
1750                                 swqe->tx_control |= EHEA_SWQE_CRC
1751                                                  | EHEA_SWQE_IP_CHECKSUM
1752                                                  | EHEA_SWQE_TCP_CHECKSUM
1753                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
1754
1755                                 write_udp_offset_end(swqe, skb);
1756                         }
1757                 } else {
1758                         /* icmp (big data) and
1759                            ip segmentation packets (all other ip packets) */
1760                         swqe->tx_control |= EHEA_SWQE_CRC
1761                                          | EHEA_SWQE_IP_CHECKSUM
1762                                          | EHEA_SWQE_IMM_DATA_PRESENT;
1763                 }
1764         } else {
1765                 /* Other Ethernet Protocol */
1766                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1767         }
1768         /* copy (immediate) data */
1769         if (nfrags == 0) {
1770                 /* data is in a single piece */
1771                 memcpy(imm_data, skb->data, skb->len);
1772         } else {
1773                 /* first copy data from the skb->data buffer ... */
1774                 memcpy(imm_data, skb->data, skb->len - skb->data_len);
1775                 imm_data += skb->len - skb->data_len;
1776
1777                 /* ... then copy data from the fragments */
1778                 for (i = 0; i < nfrags; i++) {
1779                         frag = &skb_shinfo(skb)->frags[i];
1780                         memcpy(imm_data,
1781                                page_address(frag->page) + frag->page_offset,
1782                                frag->size);
1783                         imm_data += frag->size;
1784                 }
1785         }
1786         swqe->immediate_data_length = skb->len;
1787         dev_kfree_skb(skb);
1788 }
1789
1790 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1791 {
1792         struct ehea_port *port = netdev_priv(dev);
1793         struct ehea_swqe *swqe;
1794         unsigned long flags;
1795         u32 lkey;
1796         int swqe_index;
1797         struct ehea_port_res *pr = &port->port_res[0];
1798
1799         spin_lock(&pr->xmit_lock);
1800
1801         swqe = ehea_get_swqe(pr->qp, &swqe_index);
1802         memset(swqe, 0, SWQE_HEADER_SIZE);
1803         atomic_dec(&pr->swqe_avail);
1804
1805         if (skb->len <= SWQE3_MAX_IMM) {
1806                 u32 sig_iv = port->sig_comp_iv;
1807                 u32 swqe_num = pr->swqe_id_counter;
1808                 ehea_xmit3(skb, dev, swqe);
1809                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1810                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1811                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1812                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1813                                                       sig_iv);
1814                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1815                         pr->swqe_ll_count = 0;
1816                 } else
1817                         pr->swqe_ll_count += 1;
1818         } else {
1819                 swqe->wr_id =
1820                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1821                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1822                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1823                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1824
1825                 pr->sq_skba.index++;
1826                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1827
1828                 lkey = pr->send_mr.lkey;
1829                 ehea_xmit2(skb, dev, swqe, lkey);
1830
1831                 if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
1832                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1833                                                       EHEA_SIG_IV_LONG);
1834                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1835                         pr->swqe_count = 0;
1836                 } else
1837                         pr->swqe_count += 1;
1838         }
1839         pr->swqe_id_counter += 1;
1840
1841         if (port->vgrp && vlan_tx_tag_present(skb)) {
1842                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1843                 swqe->vlan_tag = vlan_tx_tag_get(skb);
1844         }
1845
1846         if (netif_msg_tx_queued(port)) {
1847                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
1848                 ehea_dump(swqe, sizeof(*swqe), "swqe");
1849         }
1850
1851         ehea_post_swqe(pr->qp, swqe);
1852         pr->tx_packets++;
1853
1854         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1855                 spin_lock_irqsave(&pr->netif_queue, flags);
1856                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1857                         netif_stop_queue(dev);
1858                         pr->queue_stopped = 1;
1859                 }
1860                 spin_unlock_irqrestore(&pr->netif_queue, flags);
1861         }
1862         dev->trans_start = jiffies;
1863         spin_unlock(&pr->xmit_lock);
1864
1865         return NETDEV_TX_OK;
1866 }
1867
1868 static void ehea_vlan_rx_register(struct net_device *dev,
1869                                   struct vlan_group *grp)
1870 {
1871         struct ehea_port *port = netdev_priv(dev);
1872         struct ehea_adapter *adapter = port->adapter;
1873         struct hcp_ehea_port_cb1 *cb1;
1874         u64 hret;
1875
1876         port->vgrp = grp;
1877
1878         cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1879         if (!cb1) {
1880                 ehea_error("no mem for cb1");
1881                 goto out;
1882         }
1883
1884         if (grp)
1885                 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1886         else
1887                 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
1888
1889         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1890                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1891         if (hret != H_SUCCESS)
1892                 ehea_error("modify_ehea_port failed");
1893
1894         kfree(cb1);
1895 out:
1896         return;
1897 }
1898
1899 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1900 {
1901         struct ehea_port *port = netdev_priv(dev);
1902         struct ehea_adapter *adapter = port->adapter;
1903         struct hcp_ehea_port_cb1 *cb1;
1904         int index;
1905         u64 hret;
1906
1907         cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1908         if (!cb1) {
1909                 ehea_error("no mem for cb1");
1910                 goto out;
1911         }
1912
1913         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1914                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1915         if (hret != H_SUCCESS) {
1916                 ehea_error("query_ehea_port failed");
1917                 goto out;
1918         }
1919
1920         index = (vid / 64);
1921         cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1922
1923         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1924                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1925         if (hret != H_SUCCESS)
1926                 ehea_error("modify_ehea_port failed");
1927 out:
1928         kfree(cb1);
1929         return;
1930 }
1931
1932 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1933 {
1934         struct ehea_port *port = netdev_priv(dev);
1935         struct ehea_adapter *adapter = port->adapter;
1936         struct hcp_ehea_port_cb1 *cb1;
1937         int index;
1938         u64 hret;
1939
1940         if (port->vgrp)
1941                 port->vgrp->vlan_devices[vid] = NULL;
1942
1943         cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1944         if (!cb1) {
1945                 ehea_error("no mem for cb1");
1946                 goto out;
1947         }
1948
1949         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1950                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1951         if (hret != H_SUCCESS) {
1952                 ehea_error("query_ehea_port failed");
1953                 goto out;
1954         }
1955
1956         index = (vid / 64);
1957         cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1958
1959         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1960                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1961         if (hret != H_SUCCESS)
1962                 ehea_error("modify_ehea_port failed");
1963 out:
1964         kfree(cb1);
1965         return;
1966 }
1967
1968 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1969 {
1970         int ret = -EIO;
1971         u64 hret;
1972         u16 dummy16 = 0;
1973         u64 dummy64 = 0;
1974         struct hcp_modify_qp_cb0* cb0;
1975
1976         cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1977         if (!cb0) {
1978                 ret = -ENOMEM;
1979                 goto out;
1980         }
1981
1982         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1983                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1984         if (hret != H_SUCCESS) {
1985                 ehea_error("query_ehea_qp failed (1)");
1986                 goto out;
1987         }
1988
1989         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
1990         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
1991                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
1992                                      &dummy64, &dummy64, &dummy16, &dummy16);
1993         if (hret != H_SUCCESS) {
1994                 ehea_error("modify_ehea_qp failed (1)");
1995                 goto out;
1996         }
1997
1998         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1999                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2000         if (hret != H_SUCCESS) {
2001                 ehea_error("query_ehea_qp failed (2)");
2002                 goto out;
2003         }
2004
2005         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2006         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2007                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2008                                      &dummy64, &dummy64, &dummy16, &dummy16);
2009         if (hret != H_SUCCESS) {
2010                 ehea_error("modify_ehea_qp failed (2)");
2011                 goto out;
2012         }
2013
2014         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2015                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2016         if (hret != H_SUCCESS) {
2017                 ehea_error("query_ehea_qp failed (3)");
2018                 goto out;
2019         }
2020
2021         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2022         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2023                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2024                                      &dummy64, &dummy64, &dummy16, &dummy16);
2025         if (hret != H_SUCCESS) {
2026                 ehea_error("modify_ehea_qp failed (3)");
2027                 goto out;
2028         }
2029
2030         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2031                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2032         if (hret != H_SUCCESS) {
2033                 ehea_error("query_ehea_qp failed (4)");
2034                 goto out;
2035         }
2036
2037         ret = 0;
2038 out:
2039         kfree(cb0);
2040         return ret;
2041 }
2042
2043 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2044                                int add_tx_qps)
2045 {
2046         int ret, i;
2047         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2048         enum ehea_eq_type eq_type = EHEA_EQ;
2049
2050         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2051                                    EHEA_MAX_ENTRIES_EQ, 1);
2052         if (!port->qp_eq) {
2053                 ret = -EINVAL;
2054                 ehea_error("ehea_create_eq failed (qp_eq)");
2055                 goto out_kill_eq;
2056         }
2057
2058         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2059         pr_cfg.max_entries_scq = sq_entries;
2060         pr_cfg.max_entries_sq = sq_entries;
2061         pr_cfg.max_entries_rq1 = rq1_entries;
2062         pr_cfg.max_entries_rq2 = rq2_entries;
2063         pr_cfg.max_entries_rq3 = rq3_entries;
2064
2065         pr_cfg_small_rx.max_entries_rcq = 1;
2066         pr_cfg_small_rx.max_entries_scq = sq_entries;
2067         pr_cfg_small_rx.max_entries_sq = sq_entries;
2068         pr_cfg_small_rx.max_entries_rq1 = 1;
2069         pr_cfg_small_rx.max_entries_rq2 = 1;
2070         pr_cfg_small_rx.max_entries_rq3 = 1;
2071
2072         for (i = 0; i < def_qps; i++) {
2073                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2074                 if (ret)
2075                         goto out_clean_pr;
2076         }
2077         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2078                 ret = ehea_init_port_res(port, &port->port_res[i],
2079                                          &pr_cfg_small_rx, i);
2080                 if (ret)
2081                         goto out_clean_pr;
2082         }
2083
2084         return 0;
2085
2086 out_clean_pr:
2087         while (--i >= 0)
2088                 ehea_clean_portres(port, &port->port_res[i]);
2089
2090 out_kill_eq:
2091         ehea_destroy_eq(port->qp_eq);
2092         return ret;
2093 }
2094
2095 static int ehea_clean_all_portres(struct ehea_port *port)
2096 {
2097         int ret = 0;
2098         int i;
2099
2100         for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2101                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2102
2103         ret |= ehea_destroy_eq(port->qp_eq);
2104
2105         return ret;
2106 }
2107
2108 static int ehea_up(struct net_device *dev)
2109 {
2110         int ret, i;
2111         struct ehea_port *port = netdev_priv(dev);
2112         u64 mac_addr = 0;
2113
2114         if (port->state == EHEA_PORT_UP)
2115                 return 0;
2116
2117         ret = ehea_port_res_setup(port, port->num_def_qps,
2118                                   port->num_add_tx_qps);
2119         if (ret) {
2120                 ehea_error("port_res_failed");
2121                 goto out;
2122         }
2123
2124         /* Set default QP for this port */
2125         ret = ehea_configure_port(port);
2126         if (ret) {
2127                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2128                 goto out_clean_pr;
2129         }
2130
2131         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2132         if (ret) {
2133                 ret = -EIO;
2134                 ehea_error("out_clean_pr");
2135                 goto out_clean_pr;
2136         }
2137         mac_addr = (*(u64*)dev->dev_addr) >> 16;
2138
2139         ret = ehea_reg_interrupts(dev);
2140         if (ret) {
2141                 ehea_error("out_dereg_bc");
2142                 goto out_dereg_bc;
2143         }
2144
2145         for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2146                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2147                 if (ret) {
2148                         ehea_error("activate_qp failed");
2149                         goto out_free_irqs;
2150                 }
2151         }
2152
2153         for(i = 0; i < port->num_def_qps; i++) {
2154                 ret = ehea_fill_port_res(&port->port_res[i]);
2155                 if (ret) {
2156                         ehea_error("out_free_irqs");
2157                         goto out_free_irqs;
2158                 }
2159         }
2160
2161         ret = 0;
2162         port->state = EHEA_PORT_UP;
2163         goto out;
2164
2165 out_free_irqs:
2166         ehea_free_interrupts(dev);
2167
2168 out_dereg_bc:
2169         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2170
2171 out_clean_pr:
2172         ehea_clean_all_portres(port);
2173 out:
2174         return ret;
2175 }
2176
2177 static int ehea_open(struct net_device *dev)
2178 {
2179         int ret;
2180         struct ehea_port *port = netdev_priv(dev);
2181
2182         down(&port->port_lock);
2183
2184         if (netif_msg_ifup(port))
2185                 ehea_info("enabling port %s", dev->name);
2186
2187         ret = ehea_up(dev);
2188         if (!ret)
2189                 netif_start_queue(dev);
2190
2191         up(&port->port_lock);
2192
2193         return ret;
2194 }
2195
2196 static int ehea_down(struct net_device *dev)
2197 {
2198         int ret, i;
2199         struct ehea_port *port = netdev_priv(dev);
2200
2201         if (port->state == EHEA_PORT_DOWN)
2202                 return 0;
2203
2204         ehea_drop_multicast_list(dev);
2205         ehea_free_interrupts(dev);
2206
2207         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2208                 tasklet_kill(&port->port_res[i].send_comp_task);
2209
2210         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2211         ret = ehea_clean_all_portres(port);
2212         port->state = EHEA_PORT_DOWN;
2213         return ret;
2214 }
2215
2216 static int ehea_stop(struct net_device *dev)
2217 {
2218         int ret;
2219         struct ehea_port *port = netdev_priv(dev);
2220
2221         if (netif_msg_ifdown(port))
2222                 ehea_info("disabling port %s", dev->name);
2223
2224         flush_workqueue(port->adapter->ehea_wq);
2225         down(&port->port_lock);
2226         netif_stop_queue(dev);
2227         ret = ehea_down(dev);
2228         up(&port->port_lock);
2229         return ret;
2230 }
2231
2232 static void ehea_reset_port(void *data)
2233 {
2234         int ret;
2235         struct net_device *dev = data;
2236         struct ehea_port *port = netdev_priv(dev);
2237
2238         port->resets++;
2239         down(&port->port_lock);
2240         netif_stop_queue(dev);
2241         netif_poll_disable(dev);
2242
2243         ret = ehea_down(dev);
2244         if (ret)
2245                 ehea_error("ehea_down failed. not all resources are freed");
2246
2247         ret = ehea_up(dev);
2248         if (ret) {
2249                 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2250                 goto out;
2251         }
2252
2253         if (netif_msg_timer(port))
2254                 ehea_info("Device %s resetted successfully", dev->name);
2255
2256         netif_poll_enable(dev);
2257         netif_wake_queue(dev);
2258 out:
2259         up(&port->port_lock);
2260         return;
2261 }
2262
2263 static void ehea_tx_watchdog(struct net_device *dev)
2264 {
2265         struct ehea_port *port = netdev_priv(dev);
2266
2267         if (netif_carrier_ok(dev))
2268                 queue_work(port->adapter->ehea_wq, &port->reset_task);
2269 }
2270
2271 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2272 {
2273         struct hcp_query_ehea *cb;
2274         u64 hret;
2275         int ret;
2276
2277         cb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
2278         if (!cb) {
2279                 ret = -ENOMEM;
2280                 goto out;
2281         }
2282
2283         hret = ehea_h_query_ehea(adapter->handle, cb);
2284
2285         if (hret != H_SUCCESS) {
2286                 ret = -EIO;
2287                 goto out_herr;
2288         }
2289
2290         adapter->num_ports = cb->num_ports;
2291         adapter->max_mc_mac = cb->max_mc_mac - 1;
2292         ret = 0;
2293
2294 out_herr:
2295         kfree(cb);
2296 out:
2297         return ret;
2298 }
2299
2300 static int ehea_setup_single_port(struct ehea_port *port,
2301                                   struct device_node *dn)
2302 {
2303         int ret;
2304         u64 hret;
2305         struct net_device *dev = port->netdev;
2306         struct ehea_adapter *adapter = port->adapter;
2307         struct hcp_ehea_port_cb4 *cb4;
2308         u32 *dn_log_port_id;
2309
2310         sema_init(&port->port_lock, 1);
2311         port->state = EHEA_PORT_DOWN;
2312         port->sig_comp_iv = sq_entries / 10;
2313
2314         if (!dn) {
2315                 ehea_error("bad device node: dn=%p", dn);
2316                 ret = -EINVAL;
2317                 goto out;
2318         }
2319
2320         port->of_dev_node = dn;
2321
2322         /* Determine logical port id */
2323         dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL);
2324
2325         if (!dn_log_port_id) {
2326                 ehea_error("bad device node: dn_log_port_id=%p",
2327                            dn_log_port_id);
2328                 ret = -EINVAL;
2329                 goto out;
2330         }
2331         port->logical_port_id = *dn_log_port_id;
2332
2333         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2334         if (!port->mc_list) {
2335                 ret = -ENOMEM;
2336                 goto out;
2337         }
2338
2339         INIT_LIST_HEAD(&port->mc_list->list);
2340
2341         ehea_set_portspeed(port, EHEA_SPEED_AUTONEG);
2342
2343         ret = ehea_sense_port_attr(port);
2344         if (ret)
2345                 goto out;
2346
2347         /* Enable Jumbo frames */
2348         cb4 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
2349         if (!cb4) {
2350                 ehea_error("no mem for cb4");
2351         } else {
2352                 cb4->jumbo_frame = 1;
2353                 hret = ehea_h_modify_ehea_port(adapter->handle,
2354                                                port->logical_port_id,
2355                                                H_PORT_CB4, H_PORT_CB4_JUMBO,
2356                                                cb4);
2357                 if (hret != H_SUCCESS) {
2358                         ehea_info("Jumbo frames not activated");
2359                 }
2360                 kfree(cb4);
2361         }
2362
2363         /* initialize net_device structure */
2364         SET_MODULE_OWNER(dev);
2365
2366         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2367
2368         dev->open = ehea_open;
2369         dev->poll = ehea_poll;
2370         dev->weight = 64;
2371         dev->stop = ehea_stop;
2372         dev->hard_start_xmit = ehea_start_xmit;
2373         dev->get_stats = ehea_get_stats;
2374         dev->set_multicast_list = ehea_set_multicast_list;
2375         dev->set_mac_address = ehea_set_mac_addr;
2376         dev->change_mtu = ehea_change_mtu;
2377         dev->vlan_rx_register = ehea_vlan_rx_register;
2378         dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2379         dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2380         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2381                       | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2382                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2383                       | NETIF_F_LLTX;
2384         dev->tx_timeout = &ehea_tx_watchdog;
2385         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2386
2387         INIT_WORK(&port->reset_task, ehea_reset_port, dev);
2388
2389         ehea_set_ethtool_ops(dev);
2390
2391         ret = register_netdev(dev);
2392         if (ret) {
2393                 ehea_error("register_netdev failed. ret=%d", ret);
2394                 goto out_free;
2395         }
2396
2397         port->netdev = dev;
2398         ret = 0;
2399         goto out;
2400
2401 out_free:
2402         kfree(port->mc_list);
2403 out:
2404         return ret;
2405 }
2406
2407 static int ehea_setup_ports(struct ehea_adapter *adapter)
2408 {
2409         int ret;
2410         int port_setup_ok = 0;
2411         struct ehea_port *port;
2412         struct device_node *dn = NULL;
2413         struct net_device *dev;
2414         int i;
2415
2416         /* get port properties for all ports */
2417         for (i = 0; i < adapter->num_ports; i++) {
2418
2419                 if (adapter->port[i])
2420                         continue;       /* port already up and running */
2421
2422                 /* allocate memory for the port structures */
2423                 dev = alloc_etherdev(sizeof(struct ehea_port));
2424
2425                 if (!dev) {
2426                         ehea_error("no mem for net_device");
2427                         break;
2428                 }
2429
2430                 port = netdev_priv(dev);
2431                 port->adapter = adapter;
2432                 port->netdev = dev;
2433                 adapter->port[i] = port;
2434                 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2435
2436                 dn = of_find_node_by_name(dn, "ethernet");
2437                 ret = ehea_setup_single_port(port, dn);
2438                 if (ret) {
2439                         /* Free mem for this port struct. The others will be
2440                            processed on rollback */
2441                         free_netdev(dev);
2442                         adapter->port[i] = NULL;
2443                         ehea_error("eHEA port %d setup failed, ret=%d", i, ret);
2444                 }
2445         }
2446
2447         of_node_put(dn);
2448
2449         /* Check for succesfully set up ports */
2450         for (i = 0; i < adapter->num_ports; i++)
2451                 if (adapter->port[i])
2452                         port_setup_ok++;
2453
2454         if (port_setup_ok)
2455                 ret = 0;        /* At least some ports are setup correctly */
2456         else
2457                 ret = -EINVAL;
2458
2459         return ret;
2460 }
2461
2462 static int __devinit ehea_probe(struct ibmebus_dev *dev,
2463                                 const struct of_device_id *id)
2464 {
2465         struct ehea_adapter *adapter;
2466         u64 *adapter_handle;
2467         int ret;
2468
2469         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2470         if (!adapter) {
2471                 ret = -ENOMEM;
2472                 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2473                 goto out;
2474         }
2475
2476         adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
2477                                             NULL);
2478         if (!adapter_handle) {
2479                 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2480                         " '%s'\n", dev->ofdev.node->full_name);
2481                 ret = -ENODEV;
2482                 goto out_free_ad;
2483         }
2484
2485         adapter->handle = *adapter_handle;
2486         adapter->pd = EHEA_PD_ID;
2487
2488         dev->ofdev.dev.driver_data = adapter;
2489
2490         ret = ehea_reg_mr_adapter(adapter);
2491         if (ret) {
2492                 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2493                 goto out_free_ad;
2494         }
2495
2496         /* initialize adapter and ports */
2497         /* get adapter properties */
2498         ret = ehea_sense_adapter_attr(adapter);
2499         if (ret) {
2500                 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2501                 goto out_free_res;
2502         }
2503         dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports);
2504
2505         adapter->neq = ehea_create_eq(adapter,
2506                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2507         if (!adapter->neq) {
2508                 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2509                 goto out_free_res;
2510         }
2511
2512         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2513                      (unsigned long)adapter);
2514
2515         ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
2516                                   ehea_interrupt_neq, SA_INTERRUPT,
2517                                   "ehea_neq", adapter);
2518         if (ret) {
2519                 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2520                 goto out_kill_eq;
2521         }
2522
2523         adapter->ehea_wq = create_workqueue("ehea_wq");
2524         if (!adapter->ehea_wq)
2525                 goto out_free_irq;
2526
2527         ret = ehea_setup_ports(adapter);
2528         if (ret) {
2529                 dev_err(&dev->ofdev.dev, "setup_ports failed");
2530                 goto out_kill_wq;
2531         }
2532
2533         ret = 0;
2534         goto out;
2535
2536 out_kill_wq:
2537         destroy_workqueue(adapter->ehea_wq);
2538
2539 out_free_irq:
2540         ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2541
2542 out_kill_eq:
2543         ehea_destroy_eq(adapter->neq);
2544
2545 out_free_res:
2546         ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2547
2548 out_free_ad:
2549         kfree(adapter);
2550 out:
2551         return ret;
2552 }
2553
2554 static void ehea_shutdown_single_port(struct ehea_port *port)
2555 {
2556         unregister_netdev(port->netdev);
2557         kfree(port->mc_list);
2558         free_netdev(port->netdev);
2559 }
2560
2561 static int __devexit ehea_remove(struct ibmebus_dev *dev)
2562 {
2563         struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2564         u64 hret;
2565         int i;
2566
2567         for (i = 0; i < adapter->num_ports; i++)
2568                 if (adapter->port[i]) {
2569                         ehea_shutdown_single_port(adapter->port[i]);
2570                         adapter->port[i] = NULL;
2571                 }
2572         destroy_workqueue(adapter->ehea_wq);
2573
2574         ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2575
2576         ehea_destroy_eq(adapter->neq);
2577
2578         hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2579         if (hret) {
2580                 dev_err(&dev->ofdev.dev, "free_resource_mr failed");
2581                 return -EIO;
2582         }
2583         kfree(adapter);
2584         return 0;
2585 }
2586
2587 static int check_module_parm(void)
2588 {
2589         int ret = 0;
2590
2591         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2592             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2593                 ehea_info("Bad parameter: rq1_entries");
2594                 ret = -EINVAL;
2595         }
2596         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2597             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2598                 ehea_info("Bad parameter: rq2_entries");
2599                 ret = -EINVAL;
2600         }
2601         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2602             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2603                 ehea_info("Bad parameter: rq3_entries");
2604                 ret = -EINVAL;
2605         }
2606         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2607             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2608                 ehea_info("Bad parameter: sq_entries");
2609                 ret = -EINVAL;
2610         }
2611
2612         return ret;
2613 }
2614
2615 static struct of_device_id ehea_device_table[] = {
2616         {
2617                 .name = "lhea",
2618                 .compatible = "IBM,lhea",
2619         },
2620         {},
2621 };
2622
2623 static struct ibmebus_driver ehea_driver = {
2624         .name = "ehea",
2625         .id_table = ehea_device_table,
2626         .probe = ehea_probe,
2627         .remove = ehea_remove,
2628 };
2629
2630 int __init ehea_module_init(void)
2631 {
2632         int ret;
2633
2634         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2635                DRV_VERSION);
2636
2637         ret = check_module_parm();
2638         if (ret)
2639                 goto out;
2640         ret = ibmebus_register_driver(&ehea_driver);
2641         if (ret)
2642                 ehea_error("failed registering eHEA device driver on ebus");
2643
2644 out:
2645         return ret;
2646 }
2647
2648 static void __exit ehea_module_exit(void)
2649 {
2650         ibmebus_unregister_driver(&ehea_driver);
2651 }
2652
2653 module_init(ehea_module_init);
2654 module_exit(ehea_module_exit);