drivers/net/ehea/ehea_main.c

   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(PAGE_SIZE, 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 {
 541         struct ehea_port_res *pr = param;
 542         tasklet_hi_schedule(&pr->send_comp_task);
 543         return IRQ_HANDLED;
 544 }
 545
 546 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 547 {
 548         struct ehea_port_res *pr = param;
 549         struct ehea_port *port = pr->port;
 550         netif_rx_schedule(port->netdev);
 551         return IRQ_HANDLED;
 552 }
 553
 554 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 555 {
 556         struct ehea_port *port = param;
 557         struct ehea_eqe *eqe;
 558         u32 qp_token;
 559
 560         eqe = ehea_poll_eq(port->qp_eq);
 561
 562         while (eqe) {
 563                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 564                 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
 565                            eqe->entry, qp_token);
 566                 eqe = ehea_poll_eq(port->qp_eq);
 567         }
 568
 569         return IRQ_HANDLED;
 570 }
 571
 572 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 573                                        int logical_port)
 574 {
 575         int i;
 576
 577         for (i = 0; i < adapter->num_ports; i++)
 578                 if (adapter->port[i])
 579                         if (adapter->port[i]->logical_port_id == logical_port)
 580                                 return adapter->port[i];
 581         return NULL;
 582 }
 583
 584 int ehea_sense_port_attr(struct ehea_port *port)
 585 {
 586         int ret;
 587         u64 hret;
 588         struct hcp_ehea_port_cb0 *cb0;
 589
 590         cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);   /* May be called via */
 591         if (!cb0) {                             /* ehea_neq_tasklet() */
 592                 ehea_error("no mem for cb0");
 593                 ret = -ENOMEM;
 594                 goto out;
 595         }
 596
 597         hret = ehea_h_query_ehea_port(port->adapter->handle,
 598                                       port->logical_port_id, H_PORT_CB0,
 599                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 600                                       cb0);
 601         if (hret != H_SUCCESS) {
 602                 ret = -EIO;
 603                 goto out_free;
 604         }
 605
 606         /* MAC address */
 607         port->mac_addr = cb0->port_mac_addr << 16;
 608
 609         if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
 610                 ret = -EADDRNOTAVAIL;
 611                 goto out_free;
 612         }
 613
 614         /* Port speed */
 615         switch (cb0->port_speed) {
 616         case H_SPEED_10M_H:
 617                 port->port_speed = EHEA_SPEED_10M;
 618                 port->full_duplex = 0;
 619                 break;
 620         case H_SPEED_10M_F:
 621                 port->port_speed = EHEA_SPEED_10M;
 622                 port->full_duplex = 1;
 623                 break;
 624         case H_SPEED_100M_H:
 625                 port->port_speed = EHEA_SPEED_100M;
 626                 port->full_duplex = 0;
 627                 break;
 628         case H_SPEED_100M_F:
 629                 port->port_speed = EHEA_SPEED_100M;
 630                 port->full_duplex = 1;
 631                 break;
 632         case H_SPEED_1G_F:
 633                 port->port_speed = EHEA_SPEED_1G;
 634                 port->full_duplex = 1;
 635                 break;
 636         case H_SPEED_10G_F:
 637                 port->port_speed = EHEA_SPEED_10G;
 638                 port->full_duplex = 1;
 639                 break;
 640         default:
 641                 port->port_speed = 0;
 642                 port->full_duplex = 0;
 643                 break;
 644         }
 645
 646         port->autoneg = 1;
 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(PAGE_SIZE, 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");
 735                         ret = -EPERM;
 736                 } else {
 737                         ret = -EIO;
 738                         ehea_error("Failed setting port speed");
 739                 }
 740         }
 741         netif_carrier_on(port->netdev);
 742         kfree(cb4);
 743 out:
 744         return ret;
 745 }
 746
 747 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
 748 {
 749         int ret;
 750         u8 ec;
 751         u8 portnum;
 752         struct ehea_port *port;
 753
 754         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
 755         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
 756         port = ehea_get_port(adapter, portnum);
 757
 758         switch (ec) {
 759         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
 760
 761                 if (!port) {
 762                         ehea_error("unknown portnum %x", portnum);
 763                         break;
 764                 }
 765
 766                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
 767                         if (!netif_carrier_ok(port->netdev)) {
 768                                 ret = ehea_sense_port_attr(port);
 769                                 if (ret) {
 770                                         ehea_error("failed resensing port "
 771                                                    "attributes");
 772                                         break;
 773                                 }
 774
 775                                 if (netif_msg_link(port))
 776                                         ehea_info("%s: Logical port up: %dMbps "
 777                                                   "%s Duplex",
 778                                                   port->netdev->name,
 779                                                   port->port_speed,
 780                                                   port->full_duplex ==
 781                                                   1 ? "Full" : "Half");
 782
 783                                 netif_carrier_on(port->netdev);
 784                                 netif_wake_queue(port->netdev);
 785                         }
 786                 } else
 787                         if (netif_carrier_ok(port->netdev)) {
 788                                 if (netif_msg_link(port))
 789                                         ehea_info("%s: Logical port down",
 790                                                   port->netdev->name);
 791                                 netif_carrier_off(port->netdev);
 792                                 netif_stop_queue(port->netdev);
 793                         }
 794
 795                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
 796                         if (netif_msg_link(port))
 797                                 ehea_info("%s: Physical port up",
 798                                           port->netdev->name);
 799                 } else {
 800                         if (netif_msg_link(port))
 801                                 ehea_info("%s: Physical port down",
 802                                           port->netdev->name);
 803                 }
 804
 805                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
 806                         ehea_info("External switch port is primary port");
 807                 else
 808                         ehea_info("External switch port is backup port");
 809
 810                 break;
 811         case EHEA_EC_ADAPTER_MALFUNC:
 812                 ehea_error("Adapter malfunction");
 813                 break;
 814         case EHEA_EC_PORT_MALFUNC:
 815                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
 816                 netif_carrier_off(port->netdev);
 817                 netif_stop_queue(port->netdev);
 818                 break;
 819         default:
 820                 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
 821                 break;
 822         }
 823 }
 824
 825 static void ehea_neq_tasklet(unsigned long data)
 826 {
 827         struct ehea_adapter *adapter = (struct ehea_adapter*)data;
 828         struct ehea_eqe *eqe;
 829         u64 event_mask;
 830
 831         eqe = ehea_poll_eq(adapter->neq);
 832         ehea_debug("eqe=%p", eqe);
 833
 834         while (eqe) {
 835                 ehea_debug("*eqe=%lx", eqe->entry);
 836                 ehea_parse_eqe(adapter, eqe->entry);
 837                 eqe = ehea_poll_eq(adapter->neq);
 838                 ehea_debug("next eqe=%p", eqe);
 839         }
 840
 841         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
 842                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
 843                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
 844
 845         ehea_h_reset_events(adapter->handle,
 846                             adapter->neq->fw_handle, event_mask);
 847 }
 848
 849 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
 850 {
 851         struct ehea_adapter *adapter = param;
 852         tasklet_hi_schedule(&adapter->neq_tasklet);
 853         return IRQ_HANDLED;
 854 }
 855
 856
 857 static int ehea_fill_port_res(struct ehea_port_res *pr)
 858 {
 859         int ret;
 860         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
 861
 862         ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
 863                                      - init_attr->act_nr_rwqes_rq2
 864                                      - init_attr->act_nr_rwqes_rq3 - 1);
 865
 866         ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
 867
 868         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
 869
 870         return ret;
 871 }
 872
 873 static int ehea_reg_interrupts(struct net_device *dev)
 874 {
 875         struct ehea_port *port = netdev_priv(dev);
 876         struct ehea_port_res *pr;
 877         int i, ret;
 878
 879         for (i = 0; i < port->num_def_qps; i++) {
 880                 pr = &port->port_res[i];
 881                 snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
 882                          , "%s-recv%d", dev->name, i);
 883                 ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
 884                                           ehea_recv_irq_handler,
 885                                           SA_INTERRUPT, pr->int_recv_name, pr);
 886                 if (ret) {
 887                         ehea_error("failed registering irq for ehea_recv_int:"
 888                                    "port_res_nr:%d, ist=%X", i,
 889                                    pr->recv_eq->attr.ist1);
 890                         goto out_free_seq;
 891                 }
 892                 if (netif_msg_ifup(port))
 893                         ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
 894                                   "registered", pr->recv_eq->attr.ist1, i);
 895         }
 896
 897         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
 898                  dev->name);
 899
 900         ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
 901                                   ehea_qp_aff_irq_handler,
 902                                   SA_INTERRUPT, port->int_aff_name, port);
 903         if (ret) {
 904                 ehea_error("failed registering irq for qp_aff_irq_handler:"
 905                            "ist=%X", port->qp_eq->attr.ist1);
 906                 goto out_free_qpeq;
 907         }
 908
 909         if (netif_msg_ifup(port))
 910                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
 911                           "registered", port->qp_eq->attr.ist1);
 912
 913         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 914                 pr = &port->port_res[i];
 915                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
 916                          "%s-send%d", dev->name, i);
 917                 ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
 918                                           ehea_send_irq_handler,
 919                                           SA_INTERRUPT, pr->int_send_name,
 920                                           pr);
 921                 if (ret) {
 922                         ehea_error("failed registering irq for ehea_send "
 923                                    "port_res_nr:%d, ist=%X", i,
 924                                    pr->send_eq->attr.ist1);
 925                         goto out_free_req;
 926                 }
 927                 if (netif_msg_ifup(port))
 928                         ehea_info("irq_handle 0x%X for function ehea_send_int "
 929                                   "%d registered", pr->send_eq->attr.ist1, i);
 930         }
 931 out:
 932         return ret;
 933
 934 out_free_req:
 935         while (--i >= 0) {
 936                 u32 ist = port->port_res[i].send_eq->attr.ist1;
 937                 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
 938         }
 939 out_free_qpeq:
 940         ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
 941         i = port->num_def_qps;
 942 out_free_seq:
 943         while (--i >= 0) {
 944                 u32 ist = port->port_res[i].recv_eq->attr.ist1;
 945                 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
 946         }
 947         goto out;
 948 }
 949
 950 static void ehea_free_interrupts(struct net_device *dev)
 951 {
 952         struct ehea_port *port = netdev_priv(dev);
 953         struct ehea_port_res *pr;
 954         int i;
 955
 956         /* send */
 957         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 958                 pr = &port->port_res[i];
 959                 ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
 960                 if (netif_msg_intr(port))
 961                         ehea_info("free send irq for res %d with handle 0x%X",
 962                                   i, pr->send_eq->attr.ist1);
 963         }
 964
 965         /* receive */
 966         for (i = 0; i < port->num_def_qps; i++) {
 967                 pr = &port->port_res[i];
 968                 ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
 969                 if (netif_msg_intr(port))
 970                         ehea_info("free recv irq for res %d with handle 0x%X",
 971                                   i, pr->recv_eq->attr.ist1);
 972         }
 973
 974         /* associated events */
 975         ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
 976         if (netif_msg_intr(port))
 977                 ehea_info("associated event interrupt for handle 0x%X freed",
 978                           port->qp_eq->attr.ist1);
 979 }
 980
 981 static int ehea_configure_port(struct ehea_port *port)
 982 {
 983         int ret, i;
 984         u64 hret, mask;
 985         struct hcp_ehea_port_cb0 *cb0;
 986
 987         ret = -ENOMEM;
 988         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
 989         if (!cb0)
 990                 goto out;
 991
 992         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
 993                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
 994                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
 995                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
 996                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
 997                                       PXLY_RC_VLAN_FILTER)
 998                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
 999
1000         for (i = 0; i < port->num_def_qps; i++)
1001                 cb0->default_qpn_arr[i] = port->port_res[0].qp->init_attr.qp_nr;
1002
1003         if (netif_msg_ifup(port))
1004                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1005
1006         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1007              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1008
1009         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1010                                        port->logical_port_id,
1011                                        H_PORT_CB0, mask, cb0);
1012         ret = -EIO;
1013         if (hret != H_SUCCESS)
1014                 goto out_free;
1015
1016         ret = 0;
1017
1018 out_free:
1019         kfree(cb0);
1020 out:
1021         return ret;
1022 }
1023
1024 static int ehea_gen_smrs(struct ehea_port_res *pr)
1025 {
1026         u64 hret;
1027         struct ehea_adapter *adapter = pr->port->adapter;
1028
1029         hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1030                                    adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1031                                    adapter->pd, &pr->send_mr);
1032         if (hret != H_SUCCESS)
1033                 goto out;
1034
1035         hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1036                                    adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1037                                    adapter->pd, &pr->recv_mr);
1038         if (hret != H_SUCCESS)
1039                 goto out_freeres;
1040
1041         return 0;
1042
1043 out_freeres:
1044         hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1045         if (hret != H_SUCCESS)
1046                 ehea_error("failed freeing SMR");
1047 out:
1048         return -EIO;
1049 }
1050
1051 static int ehea_rem_smrs(struct ehea_port_res *pr)
1052 {
1053         struct ehea_adapter *adapter = pr->port->adapter;
1054         int ret = 0;
1055         u64 hret;
1056
1057         hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1058         if (hret != H_SUCCESS) {
1059                 ret = -EIO;
1060                 ehea_error("failed freeing send SMR for pr=%p", pr);
1061         }
1062
1063         hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
1064         if (hret != H_SUCCESS) {
1065                 ret = -EIO;
1066                 ehea_error("failed freeing recv SMR for pr=%p", pr);
1067         }
1068
1069         return ret;
1070 }
1071
1072 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1073 {
1074         int arr_size = sizeof(void*) * max_q_entries;
1075
1076         q_skba->arr = vmalloc(arr_size);
1077         if (!q_skba->arr)
1078                 return -ENOMEM;
1079
1080         memset(q_skba->arr, 0, arr_size);
1081
1082         q_skba->len = max_q_entries;
1083         q_skba->index = 0;
1084         q_skba->os_skbs = 0;
1085
1086         return 0;
1087 }
1088
1089 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1090                               struct port_res_cfg *pr_cfg, int queue_token)
1091 {
1092         struct ehea_adapter *adapter = port->adapter;
1093         enum ehea_eq_type eq_type = EHEA_EQ;
1094         struct ehea_qp_init_attr *init_attr = NULL;
1095         int ret = -EIO;
1096
1097         memset(pr, 0, sizeof(struct ehea_port_res));
1098
1099         pr->port = port;
1100         spin_lock_init(&pr->send_lock);
1101         spin_lock_init(&pr->recv_lock);
1102         spin_lock_init(&pr->xmit_lock);
1103         spin_lock_init(&pr->netif_queue);
1104
1105         pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1106         if (!pr->recv_eq) {
1107                 ehea_error("create_eq failed (recv_eq)");
1108                 goto out_free;
1109         }
1110
1111         pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1112         if (!pr->send_eq) {
1113                 ehea_error("create_eq failed (send_eq)");
1114                 goto out_free;
1115         }
1116
1117         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1118                                      pr->recv_eq->fw_handle,
1119                                      port->logical_port_id);
1120         if (!pr->recv_cq) {
1121                 ehea_error("create_cq failed (cq_recv)");
1122                 goto out_free;
1123         }
1124
1125         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1126                                      pr->send_eq->fw_handle,
1127                                      port->logical_port_id);
1128         if (!pr->send_cq) {
1129                 ehea_error("create_cq failed (cq_send)");
1130                 goto out_free;
1131         }
1132
1133         if (netif_msg_ifup(port))
1134                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1135                           pr->send_cq->attr.act_nr_of_cqes,
1136                           pr->recv_cq->attr.act_nr_of_cqes);
1137
1138         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1139         if (!init_attr) {
1140                 ret = -ENOMEM;
1141                 ehea_error("no mem for ehea_qp_init_attr");
1142                 goto out_free;
1143         }
1144
1145         init_attr->low_lat_rq1 = 1;
1146         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1147         init_attr->rq_count = 3;
1148         init_attr->qp_token = queue_token;
1149         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1150         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1151         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1152         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1153         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1154         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1155         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1156         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1157         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1158         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1159         init_attr->port_nr = port->logical_port_id;
1160         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1161         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1162         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1163
1164         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1165         if (!pr->qp) {
1166                 ehea_error("create_qp failed");
1167                 ret = -EIO;
1168                 goto out_free;
1169         }
1170
1171         if (netif_msg_ifup(port))
1172                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1173                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1174                           init_attr->act_nr_send_wqes,
1175                           init_attr->act_nr_rwqes_rq1,
1176                           init_attr->act_nr_rwqes_rq2,
1177                           init_attr->act_nr_rwqes_rq3);
1178
1179         ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1180         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1181         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1182         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1183         if (ret)
1184                 goto out_free;
1185
1186         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1187         if (ehea_gen_smrs(pr) != 0) {
1188                 ret = -EIO;
1189                 goto out_free;
1190         }
1191         tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
1192                      (unsigned long)pr);
1193         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1194
1195         kfree(init_attr);
1196         ret = 0;
1197         goto out;
1198
1199 out_free:
1200         kfree(init_attr);
1201         vfree(pr->sq_skba.arr);
1202         vfree(pr->rq1_skba.arr);
1203         vfree(pr->rq2_skba.arr);
1204         vfree(pr->rq3_skba.arr);
1205         ehea_destroy_qp(pr->qp);
1206         ehea_destroy_cq(pr->send_cq);
1207         ehea_destroy_cq(pr->recv_cq);
1208         ehea_destroy_eq(pr->send_eq);
1209         ehea_destroy_eq(pr->recv_eq);
1210 out:
1211         return ret;
1212 }
1213
1214 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1215 {
1216         int ret, i;
1217
1218         ret = ehea_destroy_qp(pr->qp);
1219
1220         if (!ret) {
1221                 ehea_destroy_cq(pr->send_cq);
1222                 ehea_destroy_cq(pr->recv_cq);
1223                 ehea_destroy_eq(pr->send_eq);
1224                 ehea_destroy_eq(pr->recv_eq);
1225
1226                 for (i = 0; i < pr->rq1_skba.len; i++)
1227                         if (pr->rq1_skba.arr[i])
1228                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1229
1230                 for (i = 0; i < pr->rq2_skba.len; i++)
1231                         if (pr->rq2_skba.arr[i])
1232                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1233
1234                 for (i = 0; i < pr->rq3_skba.len; i++)
1235                         if (pr->rq3_skba.arr[i])
1236                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1237
1238                 for (i = 0; i < pr->sq_skba.len; i++)
1239                         if (pr->sq_skba.arr[i])
1240                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1241
1242                 vfree(pr->rq1_skba.arr);
1243                 vfree(pr->rq2_skba.arr);
1244                 vfree(pr->rq3_skba.arr);
1245                 vfree(pr->sq_skba.arr);
1246                 ret = ehea_rem_smrs(pr);
1247         }
1248         return ret;
1249 }
1250
1251 /*
1252  * The write_* functions store information in swqe which is used by
1253  * the hardware to calculate the ip/tcp/udp checksum
1254  */
1255
1256 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1257                                       const struct sk_buff *skb)
1258 {
1259         swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
1260         swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
1261 }
1262
1263 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1264                                         const struct sk_buff *skb)
1265 {
1266         swqe->tcp_offset =
1267                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1268
1269         swqe->tcp_end = (u16)skb->len - 1;
1270 }
1271
1272 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1273                                         const struct sk_buff *skb)
1274 {
1275         swqe->tcp_offset =
1276                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1277
1278         swqe->tcp_end = (u16)skb->len - 1;
1279 }
1280
1281
1282 static void write_swqe2_TSO(struct sk_buff *skb,
1283                             struct ehea_swqe *swqe, u32 lkey)
1284 {
1285         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1286         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1287         int skb_data_size = skb->len - skb->data_len;
1288         int headersize;
1289         u64 tmp_addr;
1290
1291         /* Packet is TCP with TSO enabled */
1292         swqe->tx_control |= EHEA_SWQE_TSO;
1293         swqe->mss = skb_shinfo(skb)->gso_size;
1294         /* copy only eth/ip/tcp headers to immediate data and
1295          * the rest of skb->data to sg1entry
1296          */
1297         headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
1298
1299         skb_data_size = skb->len - skb->data_len;
1300
1301         if (skb_data_size >= headersize) {
1302                 /* copy immediate data */
1303                 memcpy(imm_data, skb->data, headersize);
1304                 swqe->immediate_data_length = headersize;
1305
1306                 if (skb_data_size > headersize) {
1307                         /* set sg1entry data */
1308                         sg1entry->l_key = lkey;
1309                         sg1entry->len = skb_data_size - headersize;
1310
1311                         tmp_addr = (u64)(skb->data + headersize);
1312                         sg1entry->vaddr = tmp_addr;
1313                         swqe->descriptors++;
1314                 }
1315         } else
1316                 ehea_error("cannot handle fragmented headers");
1317 }
1318
1319 static void write_swqe2_nonTSO(struct sk_buff *skb,
1320                                struct ehea_swqe *swqe, u32 lkey)
1321 {
1322         int skb_data_size = skb->len - skb->data_len;
1323         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1324         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1325         u64 tmp_addr;
1326
1327         /* Packet is any nonTSO type
1328          *
1329          * Copy as much as possible skb->data to immediate data and
1330          * the rest to sg1entry
1331          */
1332         if (skb_data_size >= SWQE2_MAX_IMM) {
1333                 /* copy immediate data */
1334                 memcpy(imm_data, skb->data, SWQE2_MAX_IMM);
1335
1336                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1337
1338                 if (skb_data_size > SWQE2_MAX_IMM) {
1339                         /* copy sg1entry data */
1340                         sg1entry->l_key = lkey;
1341                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1342                         tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1343                         sg1entry->vaddr = tmp_addr;
1344                         swqe->descriptors++;
1345                 }
1346         } else {
1347                 memcpy(imm_data, skb->data, skb_data_size);
1348                 swqe->immediate_data_length = skb_data_size;
1349         }
1350 }
1351
1352 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1353                                     struct ehea_swqe *swqe, u32 lkey)
1354 {
1355         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1356         skb_frag_t *frag;
1357         int nfrags, sg1entry_contains_frag_data, i;
1358         u64 tmp_addr;
1359
1360         nfrags = skb_shinfo(skb)->nr_frags;
1361         sg1entry = &swqe->u.immdata_desc.sg_entry;
1362         sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1363         swqe->descriptors = 0;
1364         sg1entry_contains_frag_data = 0;
1365
1366         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1367                 write_swqe2_TSO(skb, swqe, lkey);
1368         else
1369                 write_swqe2_nonTSO(skb, swqe, lkey);
1370
1371         /* write descriptors */
1372         if (nfrags > 0) {
1373                 if (swqe->descriptors == 0) {
1374                         /* sg1entry not yet used */
1375                         frag = &skb_shinfo(skb)->frags[0];
1376
1377                         /* copy sg1entry data */
1378                         sg1entry->l_key = lkey;
1379                         sg1entry->len = frag->size;
1380                         tmp_addr =  (u64)(page_address(frag->page)
1381                                           + frag->page_offset);
1382                         sg1entry->vaddr = tmp_addr;
1383                         swqe->descriptors++;
1384                         sg1entry_contains_frag_data = 1;
1385                 }
1386
1387                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1388
1389                         frag = &skb_shinfo(skb)->frags[i];
1390                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1391
1392                         sgentry->l_key = lkey;
1393                         sgentry->len = frag->size;
1394
1395                         tmp_addr = (u64)(page_address(frag->page)
1396                                          + frag->page_offset);
1397                         sgentry->vaddr = tmp_addr;
1398                         swqe->descriptors++;
1399                 }
1400         }
1401 }
1402
1403 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1404 {
1405         int ret = 0;
1406         u64 hret;
1407         u8 reg_type;
1408
1409         /* De/Register untagged packets */
1410         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1411         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1412                                      port->logical_port_id,
1413                                      reg_type, port->mac_addr, 0, hcallid);
1414         if (hret != H_SUCCESS) {
1415                 ehea_error("reg_dereg_bcmc failed (tagged)");
1416                 ret = -EIO;
1417                 goto out_herr;
1418         }
1419
1420         /* De/Register VLAN packets */
1421         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1422         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1423                                      port->logical_port_id,
1424                                      reg_type, port->mac_addr, 0, hcallid);
1425         if (hret != H_SUCCESS) {
1426                 ehea_error("reg_dereg_bcmc failed (vlan)");
1427                 ret = -EIO;
1428         }
1429 out_herr:
1430         return ret;
1431 }
1432
1433 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1434 {
1435         struct ehea_port *port = netdev_priv(dev);
1436         struct sockaddr *mac_addr = sa;
1437         struct hcp_ehea_port_cb0 *cb0;
1438         int ret;
1439         u64 hret;
1440
1441         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1442                 ret = -EADDRNOTAVAIL;
1443                 goto out;
1444         }
1445
1446         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1447         if (!cb0) {
1448                 ehea_error("no mem for cb0");
1449                 ret = -ENOMEM;
1450                 goto out;
1451         }
1452
1453         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1454
1455         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1456
1457         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1458                                        port->logical_port_id, H_PORT_CB0,
1459                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1460         if (hret != H_SUCCESS) {
1461                 ret = -EIO;
1462                 goto out_free;
1463         }
1464
1465         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1466
1467         /* Deregister old MAC in pHYP */
1468         ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1469         if (ret)
1470                 goto out_free;
1471
1472         port->mac_addr = cb0->port_mac_addr << 16;
1473
1474         /* Register new MAC in pHYP */
1475         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1476         if (ret)
1477                 goto out_free;
1478
1479         ret = 0;
1480 out_free:
1481         kfree(cb0);
1482 out:
1483         return ret;
1484 }
1485
1486 static void ehea_promiscuous_error(u64 hret, int enable)
1487 {
1488         if (hret == H_AUTHORITY)
1489                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1490                           enable == 1 ? "en" : "dis");
1491         else
1492                 ehea_error("failed %sabling promiscuous mode",
1493                            enable == 1 ? "en" : "dis");
1494 }
1495
1496 static void ehea_promiscuous(struct net_device *dev, int enable)
1497 {
1498         struct ehea_port *port = netdev_priv(dev);
1499         struct hcp_ehea_port_cb7 *cb7;
1500         u64 hret;
1501
1502         if ((enable && port->promisc) || (!enable && !port->promisc))
1503                 return;
1504
1505         cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1506         if (!cb7) {
1507                 ehea_error("no mem for cb7");
1508                 goto out;
1509         }
1510
1511         /* Modify Pxs_DUCQPN in CB7 */
1512         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1513
1514         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1515                                        port->logical_port_id,
1516                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1517         if (hret) {
1518                 ehea_promiscuous_error(hret, enable);
1519                 goto out;
1520         }
1521
1522         port->promisc = enable;
1523 out:
1524         kfree(cb7);
1525         return;
1526 }
1527
1528 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1529                                      u32 hcallid)
1530 {
1531         u64 hret;
1532         u8 reg_type;
1533
1534         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1535                  | EHEA_BCMC_UNTAGGED;
1536
1537         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1538                                      port->logical_port_id,
1539                                      reg_type, mc_mac_addr, 0, hcallid);
1540         if (hret)
1541                 goto out;
1542
1543         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1544                  | EHEA_BCMC_VLANID_ALL;
1545
1546         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1547                                      port->logical_port_id,
1548                                      reg_type, mc_mac_addr, 0, hcallid);
1549 out:
1550         return hret;
1551 }
1552
1553 static int ehea_drop_multicast_list(struct net_device *dev)
1554 {
1555         struct ehea_port *port = netdev_priv(dev);
1556         struct ehea_mc_list *mc_entry = port->mc_list;
1557         struct list_head *pos;
1558         struct list_head *temp;
1559         int ret = 0;
1560         u64 hret;
1561
1562         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1563                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1564
1565                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1566                                                  H_DEREG_BCMC);
1567                 if (hret) {
1568                         ehea_error("failed deregistering mcast MAC");
1569                         ret = -EIO;
1570                 }
1571
1572                 list_del(pos);
1573                 kfree(mc_entry);
1574         }
1575         return ret;
1576 }
1577
1578 static void ehea_allmulti(struct net_device *dev, int enable)
1579 {
1580         struct ehea_port *port = netdev_priv(dev);
1581         u64 hret;
1582
1583         if (!port->allmulti) {
1584                 if (enable) {
1585                         /* Enable ALLMULTI */
1586                         ehea_drop_multicast_list(dev);
1587                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1588                         if (!hret)
1589                                 port->allmulti = 1;
1590                         else
1591                                 ehea_error("failed enabling IFF_ALLMULTI");
1592                 }
1593         } else
1594                 if (!enable) {
1595                         /* Disable ALLMULTI */
1596                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1597                         if (!hret)
1598                                 port->allmulti = 0;
1599                         else
1600                                 ehea_error("failed disabling IFF_ALLMULTI");
1601                 }
1602 }
1603
1604 static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1605 {
1606         struct ehea_mc_list *ehea_mcl_entry;
1607         u64 hret;
1608
1609         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1610         if (!ehea_mcl_entry) {
1611                 ehea_error("no mem for mcl_entry");
1612                 return;
1613         }
1614
1615         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1616
1617         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1618
1619         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1620                                          H_REG_BCMC);
1621         if (!hret)
1622                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1623         else {
1624                 ehea_error("failed registering mcast MAC");
1625                 kfree(ehea_mcl_entry);
1626         }
1627 }
1628
1629 static void ehea_set_multicast_list(struct net_device *dev)
1630 {
1631         struct ehea_port *port = netdev_priv(dev);
1632         struct dev_mc_list *k_mcl_entry;
1633         int ret, i;
1634
1635         if (dev->flags & IFF_PROMISC) {
1636                 ehea_promiscuous(dev, 1);
1637                 return;
1638         }
1639         ehea_promiscuous(dev, 0);
1640
1641         if (dev->flags & IFF_ALLMULTI) {
1642                 ehea_allmulti(dev, 1);
1643                 return;
1644         }
1645         ehea_allmulti(dev, 0);
1646
1647         if (dev->mc_count) {
1648                 ret = ehea_drop_multicast_list(dev);
1649                 if (ret) {
1650                         /* Dropping the current multicast list failed.
1651                          * Enabling ALL_MULTI is the best we can do.
1652                          */
1653                         ehea_allmulti(dev, 1);
1654                 }
1655
1656                 if (dev->mc_count > port->adapter->max_mc_mac) {
1657                         ehea_info("Mcast registration limit reached (0x%lx). "
1658                                   "Use ALLMULTI!",
1659                                   port->adapter->max_mc_mac);
1660                         goto out;
1661                 }
1662
1663                 for (i = 0, k_mcl_entry = dev->mc_list;
1664                      i < dev->mc_count;
1665                      i++, k_mcl_entry = k_mcl_entry->next) {
1666                         ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1667                 }
1668         }
1669 out:
1670         return;
1671 }
1672
1673 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1674 {
1675         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1676                 return -EINVAL;
1677         dev->mtu = new_mtu;
1678         return 0;
1679 }
1680
1681 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1682                        struct ehea_swqe *swqe, u32 lkey)
1683 {
1684         if (skb->protocol == htons(ETH_P_IP)) {
1685                 /* IPv4 */
1686                 swqe->tx_control |= EHEA_SWQE_CRC
1687                                  | EHEA_SWQE_IP_CHECKSUM
1688                                  | EHEA_SWQE_TCP_CHECKSUM
1689                                  | EHEA_SWQE_IMM_DATA_PRESENT
1690                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
1691
1692                 write_ip_start_end(swqe, skb);
1693
1694                 if (skb->nh.iph->protocol == IPPROTO_UDP) {
1695                         if ((skb->nh.iph->frag_off & IP_MF) ||
1696                             (skb->nh.iph->frag_off & IP_OFFSET))
1697                                 /* IP fragment, so don't change cs */
1698                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1699                         else
1700                                 write_udp_offset_end(swqe, skb);
1701
1702                 } else if (skb->nh.iph->protocol == IPPROTO_TCP) {
1703                         write_tcp_offset_end(swqe, skb);
1704                 }
1705
1706                 /* icmp (big data) and ip segmentation packets (all other ip
1707                    packets) do not require any special handling */
1708
1709         } else {
1710                 /* Other Ethernet Protocol */
1711                 swqe->tx_control |= EHEA_SWQE_CRC
1712                                  | EHEA_SWQE_IMM_DATA_PRESENT
1713                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
1714         }
1715
1716         write_swqe2_data(skb, dev, swqe, lkey);
1717 }
1718
1719 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1720                        struct ehea_swqe *swqe)
1721 {
1722         int nfrags = skb_shinfo(skb)->nr_frags;
1723         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1724         skb_frag_t *frag;
1725         int i;
1726
1727         if (skb->protocol == htons(ETH_P_IP)) {
1728                 /* IPv4 */
1729                 write_ip_start_end(swqe, skb);
1730
1731                 if (skb->nh.iph->protocol == IPPROTO_TCP) {
1732                         swqe->tx_control |= EHEA_SWQE_CRC
1733                                          | EHEA_SWQE_IP_CHECKSUM
1734                                          | EHEA_SWQE_TCP_CHECKSUM
1735                                          | EHEA_SWQE_IMM_DATA_PRESENT;
1736
1737                         write_tcp_offset_end(swqe, skb);
1738
1739                 } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
1740                         if ((skb->nh.iph->frag_off & IP_MF) ||
1741                             (skb->nh.iph->frag_off & IP_OFFSET))
1742                                 /* IP fragment, so don't change cs */
1743                                 swqe->tx_control |= EHEA_SWQE_CRC
1744                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
1745                         else {
1746                                 swqe->tx_control |= EHEA_SWQE_CRC
1747                                                  | EHEA_SWQE_IP_CHECKSUM
1748                                                  | EHEA_SWQE_TCP_CHECKSUM
1749                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
1750
1751                                 write_udp_offset_end(swqe, skb);
1752                         }
1753                 } else {
1754                         /* icmp (big data) and
1755                            ip segmentation packets (all other ip packets) */
1756                         swqe->tx_control |= EHEA_SWQE_CRC
1757                                          | EHEA_SWQE_IP_CHECKSUM
1758                                          | EHEA_SWQE_IMM_DATA_PRESENT;
1759                 }
1760         } else {
1761                 /* Other Ethernet Protocol */
1762                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1763         }
1764         /* copy (immediate) data */
1765         if (nfrags == 0) {
1766                 /* data is in a single piece */
1767                 memcpy(imm_data, skb->data, skb->len);
1768         } else {
1769                 /* first copy data from the skb->data buffer ... */
1770                 memcpy(imm_data, skb->data, skb->len - skb->data_len);
1771                 imm_data += skb->len - skb->data_len;
1772
1773                 /* ... then copy data from the fragments */
1774                 for (i = 0; i < nfrags; i++) {
1775                         frag = &skb_shinfo(skb)->frags[i];
1776                         memcpy(imm_data,
1777                                page_address(frag->page) + frag->page_offset,
1778                                frag->size);
1779                         imm_data += frag->size;
1780                 }
1781         }
1782         swqe->immediate_data_length = skb->len;
1783         dev_kfree_skb(skb);
1784 }
1785
1786 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1787 {
1788         struct ehea_port *port = netdev_priv(dev);
1789         struct ehea_swqe *swqe;
1790         unsigned long flags;
1791         u32 lkey;
1792         int swqe_index;
1793         struct ehea_port_res *pr = &port->port_res[0];
1794
1795         spin_lock(&pr->xmit_lock);
1796
1797         swqe = ehea_get_swqe(pr->qp, &swqe_index);
1798         memset(swqe, 0, SWQE_HEADER_SIZE);
1799         atomic_dec(&pr->swqe_avail);
1800
1801         if (skb->len <= SWQE3_MAX_IMM) {
1802                 u32 sig_iv = port->sig_comp_iv;
1803                 u32 swqe_num = pr->swqe_id_counter;
1804                 ehea_xmit3(skb, dev, swqe);
1805                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1806                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1807                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1808                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1809                                                       sig_iv);
1810                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1811                         pr->swqe_ll_count = 0;
1812                 } else
1813                         pr->swqe_ll_count += 1;
1814         } else {
1815                 swqe->wr_id =
1816                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1817                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1818                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1819                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1820
1821                 pr->sq_skba.index++;
1822                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1823
1824                 lkey = pr->send_mr.lkey;
1825                 ehea_xmit2(skb, dev, swqe, lkey);
1826
1827                 if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
1828                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1829                                                       EHEA_SIG_IV_LONG);
1830                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1831                         pr->swqe_count = 0;
1832                 } else
1833                         pr->swqe_count += 1;
1834         }
1835         pr->swqe_id_counter += 1;
1836
1837         if (port->vgrp && vlan_tx_tag_present(skb)) {
1838                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1839                 swqe->vlan_tag = vlan_tx_tag_get(skb);
1840         }
1841
1842         if (netif_msg_tx_queued(port)) {
1843                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
1844                 ehea_dump(swqe, 512, "swqe");
1845         }
1846
1847         ehea_post_swqe(pr->qp, swqe);
1848         pr->tx_packets++;
1849
1850         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1851                 spin_lock_irqsave(&pr->netif_queue, flags);
1852                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1853                         netif_stop_queue(dev);
1854                         pr->queue_stopped = 1;
1855                 }
1856                 spin_unlock_irqrestore(&pr->netif_queue, flags);
1857         }
1858         dev->trans_start = jiffies;
1859         spin_unlock(&pr->xmit_lock);
1860
1861         return NETDEV_TX_OK;
1862 }
1863
1864 static void ehea_vlan_rx_register(struct net_device *dev,
1865                                   struct vlan_group *grp)
1866 {
1867         struct ehea_port *port = netdev_priv(dev);
1868         struct ehea_adapter *adapter = port->adapter;
1869         struct hcp_ehea_port_cb1 *cb1;
1870         u64 hret;
1871
1872         port->vgrp = grp;
1873
1874         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1875         if (!cb1) {
1876                 ehea_error("no mem for cb1");
1877                 goto out;
1878         }
1879
1880         if (grp)
1881                 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1882         else
1883                 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
1884
1885         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1886                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1887         if (hret != H_SUCCESS)
1888                 ehea_error("modify_ehea_port failed");
1889
1890         kfree(cb1);
1891 out:
1892         return;
1893 }
1894
1895 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1896 {
1897         struct ehea_port *port = netdev_priv(dev);
1898         struct ehea_adapter *adapter = port->adapter;
1899         struct hcp_ehea_port_cb1 *cb1;
1900         int index;
1901         u64 hret;
1902
1903         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1904         if (!cb1) {
1905                 ehea_error("no mem for cb1");
1906                 goto out;
1907         }
1908
1909         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1910                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1911         if (hret != H_SUCCESS) {
1912                 ehea_error("query_ehea_port failed");
1913                 goto out;
1914         }
1915
1916         index = (vid / 64);
1917         cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1918
1919         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1920                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1921         if (hret != H_SUCCESS)
1922                 ehea_error("modify_ehea_port failed");
1923 out:
1924         kfree(cb1);
1925         return;
1926 }
1927
1928 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1929 {
1930         struct ehea_port *port = netdev_priv(dev);
1931         struct ehea_adapter *adapter = port->adapter;
1932         struct hcp_ehea_port_cb1 *cb1;
1933         int index;
1934         u64 hret;
1935
1936         if (port->vgrp)
1937                 port->vgrp->vlan_devices[vid] = NULL;
1938
1939         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1940         if (!cb1) {
1941                 ehea_error("no mem for cb1");
1942                 goto out;
1943         }
1944
1945         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1946                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1947         if (hret != H_SUCCESS) {
1948                 ehea_error("query_ehea_port failed");
1949                 goto out;
1950         }
1951
1952         index = (vid / 64);
1953         cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1954
1955         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1956                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1957         if (hret != H_SUCCESS)
1958                 ehea_error("modify_ehea_port failed");
1959 out:
1960         kfree(cb1);
1961         return;
1962 }
1963
1964 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1965 {
1966         int ret = -EIO;
1967         u64 hret;
1968         u16 dummy16 = 0;
1969         u64 dummy64 = 0;
1970         struct hcp_modify_qp_cb0* cb0;
1971
1972         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1973         if (!cb0) {
1974                 ret = -ENOMEM;
1975                 goto out;
1976         }
1977
1978         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1979                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1980         if (hret != H_SUCCESS) {
1981                 ehea_error("query_ehea_qp failed (1)");
1982                 goto out;
1983         }
1984
1985         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
1986         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
1987                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
1988                                      &dummy64, &dummy64, &dummy16, &dummy16);
1989         if (hret != H_SUCCESS) {
1990                 ehea_error("modify_ehea_qp failed (1)");
1991                 goto out;
1992         }
1993
1994         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1995                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1996         if (hret != H_SUCCESS) {
1997                 ehea_error("query_ehea_qp failed (2)");
1998                 goto out;
1999         }
2000
2001         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2002         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2003                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2004                                      &dummy64, &dummy64, &dummy16, &dummy16);
2005         if (hret != H_SUCCESS) {
2006                 ehea_error("modify_ehea_qp failed (2)");
2007                 goto out;
2008         }
2009
2010         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2011                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2012         if (hret != H_SUCCESS) {
2013                 ehea_error("query_ehea_qp failed (3)");
2014                 goto out;
2015         }
2016
2017         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2018         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2019                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2020                                      &dummy64, &dummy64, &dummy16, &dummy16);
2021         if (hret != H_SUCCESS) {
2022                 ehea_error("modify_ehea_qp failed (3)");
2023                 goto out;
2024         }
2025
2026         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2027                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2028         if (hret != H_SUCCESS) {
2029                 ehea_error("query_ehea_qp failed (4)");
2030                 goto out;
2031         }
2032
2033         ret = 0;
2034 out:
2035         kfree(cb0);
2036         return ret;
2037 }
2038
2039 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2040                                int add_tx_qps)
2041 {
2042         int ret, i;
2043         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2044         enum ehea_eq_type eq_type = EHEA_EQ;
2045
2046         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2047                                    EHEA_MAX_ENTRIES_EQ, 1);
2048         if (!port->qp_eq) {
2049                 ret = -EINVAL;
2050                 ehea_error("ehea_create_eq failed (qp_eq)");
2051                 goto out_kill_eq;
2052         }
2053
2054         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2055         pr_cfg.max_entries_scq = sq_entries;
2056         pr_cfg.max_entries_sq = sq_entries;
2057         pr_cfg.max_entries_rq1 = rq1_entries;
2058         pr_cfg.max_entries_rq2 = rq2_entries;
2059         pr_cfg.max_entries_rq3 = rq3_entries;
2060
2061         pr_cfg_small_rx.max_entries_rcq = 1;
2062         pr_cfg_small_rx.max_entries_scq = sq_entries;
2063         pr_cfg_small_rx.max_entries_sq = sq_entries;
2064         pr_cfg_small_rx.max_entries_rq1 = 1;
2065         pr_cfg_small_rx.max_entries_rq2 = 1;
2066         pr_cfg_small_rx.max_entries_rq3 = 1;
2067
2068         for (i = 0; i < def_qps; i++) {
2069                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2070                 if (ret)
2071                         goto out_clean_pr;
2072         }
2073         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2074                 ret = ehea_init_port_res(port, &port->port_res[i],
2075                                          &pr_cfg_small_rx, i);
2076                 if (ret)
2077                         goto out_clean_pr;
2078         }
2079
2080         return 0;
2081
2082 out_clean_pr:
2083         while (--i >= 0)
2084                 ehea_clean_portres(port, &port->port_res[i]);
2085
2086 out_kill_eq:
2087         ehea_destroy_eq(port->qp_eq);
2088         return ret;
2089 }
2090
2091 static int ehea_clean_all_portres(struct ehea_port *port)
2092 {
2093         int ret = 0;
2094         int i;
2095
2096         for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2097                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2098
2099         ret |= ehea_destroy_eq(port->qp_eq);
2100
2101         return ret;
2102 }
2103
2104 static int ehea_up(struct net_device *dev)
2105 {
2106         int ret, i;
2107         struct ehea_port *port = netdev_priv(dev);
2108         u64 mac_addr = 0;
2109
2110         if (port->state == EHEA_PORT_UP)
2111                 return 0;
2112
2113         ret = ehea_port_res_setup(port, port->num_def_qps,
2114                                   port->num_add_tx_qps);
2115         if (ret) {
2116                 ehea_error("port_res_failed");
2117                 goto out;
2118         }
2119
2120         /* Set default QP for this port */
2121         ret = ehea_configure_port(port);
2122         if (ret) {
2123                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2124                 goto out_clean_pr;
2125         }
2126
2127         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2128         if (ret) {
2129                 ret = -EIO;
2130                 ehea_error("out_clean_pr");
2131                 goto out_clean_pr;
2132         }
2133         mac_addr = (*(u64*)dev->dev_addr) >> 16;
2134
2135         ret = ehea_reg_interrupts(dev);
2136         if (ret) {
2137                 ehea_error("out_dereg_bc");
2138                 goto out_dereg_bc;
2139         }
2140
2141         for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2142                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2143                 if (ret) {
2144                         ehea_error("activate_qp failed");
2145                         goto out_free_irqs;
2146                 }
2147         }
2148
2149         for(i = 0; i < port->num_def_qps; i++) {
2150                 ret = ehea_fill_port_res(&port->port_res[i]);
2151                 if (ret) {
2152                         ehea_error("out_free_irqs");
2153                         goto out_free_irqs;
2154                 }
2155         }
2156
2157         ret = 0;
2158         port->state = EHEA_PORT_UP;
2159         goto out;
2160
2161 out_free_irqs:
2162         ehea_free_interrupts(dev);
2163
2164 out_dereg_bc:
2165         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2166
2167 out_clean_pr:
2168         ehea_clean_all_portres(port);
2169 out:
2170         return ret;
2171 }
2172
2173 static int ehea_open(struct net_device *dev)
2174 {
2175         int ret;
2176         struct ehea_port *port = netdev_priv(dev);
2177
2178         down(&port->port_lock);
2179
2180         if (netif_msg_ifup(port))
2181                 ehea_info("enabling port %s", dev->name);
2182
2183         ret = ehea_up(dev);
2184         if (!ret)
2185                 netif_start_queue(dev);
2186
2187         up(&port->port_lock);
2188
2189         return ret;
2190 }
2191
2192 static int ehea_down(struct net_device *dev)
2193 {
2194         int ret, i;
2195         struct ehea_port *port = netdev_priv(dev);
2196
2197         if (port->state == EHEA_PORT_DOWN)
2198                 return 0;
2199
2200         ehea_drop_multicast_list(dev);
2201         ehea_free_interrupts(dev);
2202
2203         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2204                 tasklet_kill(&port->port_res[i].send_comp_task);
2205
2206         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2207         ret = ehea_clean_all_portres(port);
2208         port->state = EHEA_PORT_DOWN;
2209         return ret;
2210 }
2211
2212 static int ehea_stop(struct net_device *dev)
2213 {
2214         int ret;
2215         struct ehea_port *port = netdev_priv(dev);
2216
2217         if (netif_msg_ifdown(port))
2218                 ehea_info("disabling port %s", dev->name);
2219
2220         flush_workqueue(port->adapter->ehea_wq);
2221         down(&port->port_lock);
2222         netif_stop_queue(dev);
2223         ret = ehea_down(dev);
2224         up(&port->port_lock);
2225         return ret;
2226 }
2227
2228 static void ehea_reset_port(struct work_struct *work)
2229 {
2230         int ret;
2231         struct ehea_port *port =
2232                 container_of(work, struct ehea_port, reset_task);
2233         struct net_device *dev = port->netdev;
2234
2235         port->resets++;
2236         down(&port->port_lock);
2237         netif_stop_queue(dev);
2238         netif_poll_disable(dev);
2239
2240         ret = ehea_down(dev);
2241         if (ret)
2242                 ehea_error("ehea_down failed. not all resources are freed");
2243
2244         ret = ehea_up(dev);
2245         if (ret) {
2246                 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2247                 goto out;
2248         }
2249
2250         if (netif_msg_timer(port))
2251                 ehea_info("Device %s resetted successfully", dev->name);
2252
2253         netif_poll_enable(dev);
2254         netif_wake_queue(dev);
2255 out:
2256         up(&port->port_lock);
2257         return;
2258 }
2259
2260 static void ehea_tx_watchdog(struct net_device *dev)
2261 {
2262         struct ehea_port *port = netdev_priv(dev);
2263
2264         if (netif_carrier_ok(dev))
2265                 queue_work(port->adapter->ehea_wq, &port->reset_task);
2266 }
2267
2268 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2269 {
2270         struct hcp_query_ehea *cb;
2271         struct device_node *lhea_dn = NULL;
2272         struct device_node *eth_dn = NULL;
2273         u64 hret;
2274         int ret;
2275
2276         cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2277         if (!cb) {
2278                 ret = -ENOMEM;
2279                 goto out;
2280         }
2281
2282         hret = ehea_h_query_ehea(adapter->handle, cb);
2283
2284         if (hret != H_SUCCESS) {
2285                 ret = -EIO;
2286                 goto out_herr;
2287         }
2288
2289         /* Determine the number of available logical ports
2290          * by counting the child nodes of the lhea OFDT entry
2291          */
2292         adapter->num_ports = 0;
2293         lhea_dn = of_find_node_by_name(lhea_dn, "lhea");
2294         do {
2295                 eth_dn = of_get_next_child(lhea_dn, eth_dn);
2296                 if (eth_dn)
2297                         adapter->num_ports++;
2298         } while ( eth_dn );
2299         of_node_put(lhea_dn);
2300
2301         adapter->max_mc_mac = cb->max_mc_mac - 1;
2302         ret = 0;
2303
2304 out_herr:
2305         kfree(cb);
2306 out:
2307         return ret;
2308 }
2309
2310 static int ehea_setup_single_port(struct ehea_port *port,
2311                                   struct device_node *dn)
2312 {
2313         int ret;
2314         u64 hret;
2315         struct net_device *dev = port->netdev;
2316         struct ehea_adapter *adapter = port->adapter;
2317         struct hcp_ehea_port_cb4 *cb4;
2318         u32 *dn_log_port_id;
2319         int jumbo = 0;
2320
2321         sema_init(&port->port_lock, 1);
2322         port->state = EHEA_PORT_DOWN;
2323         port->sig_comp_iv = sq_entries / 10;
2324
2325         if (!dn) {
2326                 ehea_error("bad device node: dn=%p", dn);
2327                 ret = -EINVAL;
2328                 goto out;
2329         }
2330
2331         port->of_dev_node = dn;
2332
2333         /* Determine logical port id */
2334         dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL);
2335
2336         if (!dn_log_port_id) {
2337                 ehea_error("bad device node: dn_log_port_id=%p",
2338                            dn_log_port_id);
2339                 ret = -EINVAL;
2340                 goto out;
2341         }
2342         port->logical_port_id = *dn_log_port_id;
2343
2344         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2345         if (!port->mc_list) {
2346                 ret = -ENOMEM;
2347                 goto out;
2348         }
2349
2350         INIT_LIST_HEAD(&port->mc_list->list);
2351
2352         ret = ehea_sense_port_attr(port);
2353         if (ret)
2354                 goto out;
2355
2356         /* Enable Jumbo frames */
2357         cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2358         if (!cb4) {
2359                 ehea_error("no mem for cb4");
2360         } else {
2361                 hret = ehea_h_query_ehea_port(adapter->handle,
2362                                               port->logical_port_id,
2363                                               H_PORT_CB4,
2364                                               H_PORT_CB4_JUMBO, cb4);
2365
2366                 if (hret == H_SUCCESS) {
2367                         if (cb4->jumbo_frame)
2368                                 jumbo = 1;
2369                         else {
2370                                 cb4->jumbo_frame = 1;
2371                                 hret = ehea_h_modify_ehea_port(adapter->handle,
2372                                                                port->
2373                                                                 logical_port_id,
2374                                                                H_PORT_CB4,
2375                                                                H_PORT_CB4_JUMBO,
2376                                                                cb4);
2377                                 if (hret == H_SUCCESS)
2378                                         jumbo = 1;
2379                         }
2380                 }
2381                 kfree(cb4);
2382         }
2383
2384         /* initialize net_device structure */
2385         SET_MODULE_OWNER(dev);
2386
2387         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2388
2389         dev->open = ehea_open;
2390         dev->poll = ehea_poll;
2391         dev->weight = 64;
2392         dev->stop = ehea_stop;
2393         dev->hard_start_xmit = ehea_start_xmit;
2394         dev->get_stats = ehea_get_stats;
2395         dev->set_multicast_list = ehea_set_multicast_list;
2396         dev->set_mac_address = ehea_set_mac_addr;
2397         dev->change_mtu = ehea_change_mtu;
2398         dev->vlan_rx_register = ehea_vlan_rx_register;
2399         dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2400         dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2401         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2402                       | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2403                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2404                       | NETIF_F_LLTX;
2405         dev->tx_timeout = &ehea_tx_watchdog;
2406         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2407
2408         INIT_WORK(&port->reset_task, ehea_reset_port);
2409
2410         ehea_set_ethtool_ops(dev);
2411
2412         ret = register_netdev(dev);
2413         if (ret) {
2414                 ehea_error("register_netdev failed. ret=%d", ret);
2415                 goto out_free;
2416         }
2417
2418         ehea_info("%s: Jumbo frames are %sabled", dev->name,
2419                   jumbo == 1 ? "en" : "dis");
2420
2421         port->netdev = dev;
2422         ret = 0;
2423         goto out;
2424
2425 out_free:
2426         kfree(port->mc_list);
2427 out:
2428         return ret;
2429 }
2430
2431 static int ehea_setup_ports(struct ehea_adapter *adapter)
2432 {
2433         int ret;
2434         int port_setup_ok = 0;
2435         struct ehea_port *port;
2436         struct device_node *dn = NULL;
2437         struct net_device *dev;
2438         int i;
2439
2440         /* get port properties for all ports */
2441         for (i = 0; i < adapter->num_ports; i++) {
2442
2443                 if (adapter->port[i])
2444                         continue;       /* port already up and running */
2445
2446                 /* allocate memory for the port structures */
2447                 dev = alloc_etherdev(sizeof(struct ehea_port));
2448
2449                 if (!dev) {
2450                         ehea_error("no mem for net_device");
2451                         break;
2452                 }
2453
2454                 port = netdev_priv(dev);
2455                 port->adapter = adapter;
2456                 port->netdev = dev;
2457                 adapter->port[i] = port;
2458                 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2459
2460                 dn = of_find_node_by_name(dn, "ethernet");
2461                 ret = ehea_setup_single_port(port, dn);
2462                 if (ret) {
2463                         /* Free mem for this port struct. The others will be
2464                            processed on rollback */
2465                         free_netdev(dev);
2466                         adapter->port[i] = NULL;
2467                         ehea_error("eHEA port %d setup failed, ret=%d", i, ret);
2468                 }
2469         }
2470
2471         of_node_put(dn);
2472
2473         /* Check for succesfully set up ports */
2474         for (i = 0; i < adapter->num_ports; i++)
2475                 if (adapter->port[i])
2476                         port_setup_ok++;
2477
2478         if (port_setup_ok)
2479                 ret = 0;        /* At least some ports are setup correctly */
2480         else
2481                 ret = -EINVAL;
2482
2483         return ret;
2484 }
2485
2486 static int __devinit ehea_probe(struct ibmebus_dev *dev,
2487                                 const struct of_device_id *id)
2488 {
2489         struct ehea_adapter *adapter;
2490         u64 *adapter_handle;
2491         int ret;
2492
2493         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2494         if (!adapter) {
2495                 ret = -ENOMEM;
2496                 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2497                 goto out;
2498         }
2499
2500         adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
2501                                             NULL);
2502         if (adapter_handle)
2503                 adapter->handle = *adapter_handle;
2504
2505         if (!adapter->handle) {
2506                 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2507                         " '%s'\n", dev->ofdev.node->full_name);
2508                 ret = -ENODEV;
2509                 goto out_free_ad;
2510         }
2511
2512         adapter->pd = EHEA_PD_ID;
2513
2514         dev->ofdev.dev.driver_data = adapter;
2515
2516         ret = ehea_reg_mr_adapter(adapter);
2517         if (ret) {
2518                 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2519                 goto out_free_ad;
2520         }
2521
2522         /* initialize adapter and ports */
2523         /* get adapter properties */
2524         ret = ehea_sense_adapter_attr(adapter);
2525         if (ret) {
2526                 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2527                 goto out_free_res;
2528         }
2529         dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports);
2530
2531         adapter->neq = ehea_create_eq(adapter,
2532                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2533         if (!adapter->neq) {
2534                 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2535                 goto out_free_res;
2536         }
2537
2538         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2539                      (unsigned long)adapter);
2540
2541         ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
2542                                   ehea_interrupt_neq, SA_INTERRUPT,
2543                                   "ehea_neq", adapter);
2544         if (ret) {
2545                 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2546                 goto out_kill_eq;
2547         }
2548
2549         adapter->ehea_wq = create_workqueue("ehea_wq");
2550         if (!adapter->ehea_wq)
2551                 goto out_free_irq;
2552
2553         ret = ehea_setup_ports(adapter);
2554         if (ret) {
2555                 dev_err(&dev->ofdev.dev, "setup_ports failed");
2556                 goto out_kill_wq;
2557         }
2558
2559         ret = 0;
2560         goto out;
2561
2562 out_kill_wq:
2563         destroy_workqueue(adapter->ehea_wq);
2564
2565 out_free_irq:
2566         ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2567
2568 out_kill_eq:
2569         ehea_destroy_eq(adapter->neq);
2570
2571 out_free_res:
2572         ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2573
2574 out_free_ad:
2575         kfree(adapter);
2576 out:
2577         return ret;
2578 }
2579
2580 static void ehea_shutdown_single_port(struct ehea_port *port)
2581 {
2582         unregister_netdev(port->netdev);
2583         kfree(port->mc_list);
2584         free_netdev(port->netdev);
2585 }
2586
2587 static int __devexit ehea_remove(struct ibmebus_dev *dev)
2588 {
2589         struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2590         u64 hret;
2591         int i;
2592
2593         for (i = 0; i < adapter->num_ports; i++)
2594                 if (adapter->port[i]) {
2595                         ehea_shutdown_single_port(adapter->port[i]);
2596                         adapter->port[i] = NULL;
2597                 }
2598         destroy_workqueue(adapter->ehea_wq);
2599
2600         ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2601         tasklet_kill(&adapter->neq_tasklet);
2602
2603         ehea_destroy_eq(adapter->neq);
2604
2605         hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2606         if (hret) {
2607                 dev_err(&dev->ofdev.dev, "free_resource_mr failed");
2608                 return -EIO;
2609         }
2610         kfree(adapter);
2611         return 0;
2612 }
2613
2614 static int check_module_parm(void)
2615 {
2616         int ret = 0;
2617
2618         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2619             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2620                 ehea_info("Bad parameter: rq1_entries");
2621                 ret = -EINVAL;
2622         }
2623         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2624             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2625                 ehea_info("Bad parameter: rq2_entries");
2626                 ret = -EINVAL;
2627         }
2628         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2629             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2630                 ehea_info("Bad parameter: rq3_entries");
2631                 ret = -EINVAL;
2632         }
2633         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2634             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2635                 ehea_info("Bad parameter: sq_entries");
2636                 ret = -EINVAL;
2637         }
2638
2639         return ret;
2640 }
2641
2642 static struct of_device_id ehea_device_table[] = {
2643         {
2644                 .name = "lhea",
2645                 .compatible = "IBM,lhea",
2646         },
2647         {},
2648 };
2649
2650 static struct ibmebus_driver ehea_driver = {
2651         .name = "ehea",
2652         .id_table = ehea_device_table,
2653         .probe = ehea_probe,
2654         .remove = ehea_remove,
2655 };
2656
2657 int __init ehea_module_init(void)
2658 {
2659         int ret;
2660
2661         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2662                DRV_VERSION);
2663
2664         ret = check_module_parm();
2665         if (ret)
2666                 goto out;
2667         ret = ibmebus_register_driver(&ehea_driver);
2668         if (ret)
2669                 ehea_error("failed registering eHEA device driver on ebus");
2670
2671 out:
2672         return ret;
2673 }
2674
2675 static void __exit ehea_module_exit(void)
2676 {
2677         ibmebus_unregister_driver(&ehea_driver);
2678 }
2679
2680 module_init(ehea_module_init);
2681 module_exit(ehea_module_exit);