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/slab.h>
  36 #include <linux/if_ether.h>
  37 #include <linux/notifier.h>
  38 #include <linux/reboot.h>
  39 #include <linux/memory.h>
  40 #include <asm/kexec.h>
  41 #include <linux/mutex.h>
  42
  43 #include <net/ip.h>
  44
  45 #include "ehea.h"
  46 #include "ehea_qmr.h"
  47 #include "ehea_phyp.h"
  48
  49
  50 MODULE_LICENSE("GPL");
  51 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
  52 MODULE_DESCRIPTION("IBM eServer HEA Driver");
  53 MODULE_VERSION(DRV_VERSION);
  54
  55
  56 static int msg_level = -1;
  57 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
  58 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
  59 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
  60 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
  61 static int use_mcs;
  62 static int use_lro;
  63 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
  64 static int num_tx_qps = EHEA_NUM_TX_QP;
  65 static int prop_carrier_state;
  66
  67 module_param(msg_level, int, 0);
  68 module_param(rq1_entries, int, 0);
  69 module_param(rq2_entries, int, 0);
  70 module_param(rq3_entries, int, 0);
  71 module_param(sq_entries, int, 0);
  72 module_param(prop_carrier_state, int, 0);
  73 module_param(use_mcs, int, 0);
  74 module_param(use_lro, int, 0);
  75 module_param(lro_max_aggr, int, 0);
  76 module_param(num_tx_qps, int, 0);
  77
  78 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
  79 MODULE_PARM_DESC(msg_level, "msg_level");
  80 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
  81                  "port to stack. 1:yes, 0:no.  Default = 0 ");
  82 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
  83                  "[2^x - 1], x = [6..14]. Default = "
  84                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
  85 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
  86                  "[2^x - 1], x = [6..14]. Default = "
  87                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
  88 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
  89                  "[2^x - 1], x = [6..14]. Default = "
  90                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
  91 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue  "
  92                  "[2^x - 1], x = [6..14]. Default = "
  93                  __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
  94 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
  95
  96 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
  97                  __MODULE_STRING(EHEA_LRO_MAX_AGGR));
  98 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
  99                  "Default = 0");
 100
 101 static int port_name_cnt;
 102 static LIST_HEAD(adapter_list);
 103 static unsigned long ehea_driver_flags;
 104 static DEFINE_MUTEX(dlpar_mem_lock);
 105 struct ehea_fw_handle_array ehea_fw_handles;
 106 struct ehea_bcmc_reg_array ehea_bcmc_regs;
 107
 108
 109 static int __devinit ehea_probe_adapter(struct platform_device *dev,
 110                                         const struct of_device_id *id);
 111
 112 static int __devexit ehea_remove(struct platform_device *dev);
 113
 114 static struct of_device_id ehea_device_table[] = {
 115         {
 116                 .name = "lhea",
 117                 .compatible = "IBM,lhea",
 118         },
 119         {},
 120 };
 121 MODULE_DEVICE_TABLE(of, ehea_device_table);
 122
 123 static struct of_platform_driver ehea_driver = {
 124         .driver = {
 125                 .name = "ehea",
 126                 .owner = THIS_MODULE,
 127                 .of_match_table = ehea_device_table,
 128         },
 129         .probe = ehea_probe_adapter,
 130         .remove = ehea_remove,
 131 };
 132
 133 void ehea_dump(void *adr, int len, char *msg)
 134 {
 135         int x;
 136         unsigned char *deb = adr;
 137         for (x = 0; x < len; x += 16) {
 138                 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
 139                           deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
 140                 deb += 16;
 141         }
 142 }
 143
 144 void ehea_schedule_port_reset(struct ehea_port *port)
 145 {
 146         if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
 147                 schedule_work(&port->reset_task);
 148 }
 149
 150 static void ehea_update_firmware_handles(void)
 151 {
 152         struct ehea_fw_handle_entry *arr = NULL;
 153         struct ehea_adapter *adapter;
 154         int num_adapters = 0;
 155         int num_ports = 0;
 156         int num_portres = 0;
 157         int i = 0;
 158         int num_fw_handles, k, l;
 159
 160         /* Determine number of handles */
 161         mutex_lock(&ehea_fw_handles.lock);
 162
 163         list_for_each_entry(adapter, &adapter_list, list) {
 164                 num_adapters++;
 165
 166                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 167                         struct ehea_port *port = adapter->port[k];
 168
 169                         if (!port || (port->state != EHEA_PORT_UP))
 170                                 continue;
 171
 172                         num_ports++;
 173                         num_portres += port->num_def_qps + port->num_add_tx_qps;
 174                 }
 175         }
 176
 177         num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
 178                          num_ports * EHEA_NUM_PORT_FW_HANDLES +
 179                          num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
 180
 181         if (num_fw_handles) {
 182                 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
 183                 if (!arr)
 184                         goto out;  /* Keep the existing array */
 185         } else
 186                 goto out_update;
 187
 188         list_for_each_entry(adapter, &adapter_list, list) {
 189                 if (num_adapters == 0)
 190                         break;
 191
 192                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 193                         struct ehea_port *port = adapter->port[k];
 194
 195                         if (!port || (port->state != EHEA_PORT_UP) ||
 196                             (num_ports == 0))
 197                                 continue;
 198
 199                         for (l = 0;
 200                              l < port->num_def_qps + port->num_add_tx_qps;
 201                              l++) {
 202                                 struct ehea_port_res *pr = &port->port_res[l];
 203
 204                                 arr[i].adh = adapter->handle;
 205                                 arr[i++].fwh = pr->qp->fw_handle;
 206                                 arr[i].adh = adapter->handle;
 207                                 arr[i++].fwh = pr->send_cq->fw_handle;
 208                                 arr[i].adh = adapter->handle;
 209                                 arr[i++].fwh = pr->recv_cq->fw_handle;
 210                                 arr[i].adh = adapter->handle;
 211                                 arr[i++].fwh = pr->eq->fw_handle;
 212                                 arr[i].adh = adapter->handle;
 213                                 arr[i++].fwh = pr->send_mr.handle;
 214                                 arr[i].adh = adapter->handle;
 215                                 arr[i++].fwh = pr->recv_mr.handle;
 216                         }
 217                         arr[i].adh = adapter->handle;
 218                         arr[i++].fwh = port->qp_eq->fw_handle;
 219                         num_ports--;
 220                 }
 221
 222                 arr[i].adh = adapter->handle;
 223                 arr[i++].fwh = adapter->neq->fw_handle;
 224
 225                 if (adapter->mr.handle) {
 226                         arr[i].adh = adapter->handle;
 227                         arr[i++].fwh = adapter->mr.handle;
 228                 }
 229                 num_adapters--;
 230         }
 231
 232 out_update:
 233         kfree(ehea_fw_handles.arr);
 234         ehea_fw_handles.arr = arr;
 235         ehea_fw_handles.num_entries = i;
 236 out:
 237         mutex_unlock(&ehea_fw_handles.lock);
 238 }
 239
 240 static void ehea_update_bcmc_registrations(void)
 241 {
 242         unsigned long flags;
 243         struct ehea_bcmc_reg_entry *arr = NULL;
 244         struct ehea_adapter *adapter;
 245         struct ehea_mc_list *mc_entry;
 246         int num_registrations = 0;
 247         int i = 0;
 248         int k;
 249
 250         spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
 251
 252         /* Determine number of registrations */
 253         list_for_each_entry(adapter, &adapter_list, list)
 254                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 255                         struct ehea_port *port = adapter->port[k];
 256
 257                         if (!port || (port->state != EHEA_PORT_UP))
 258                                 continue;
 259
 260                         num_registrations += 2; /* Broadcast registrations */
 261
 262                         list_for_each_entry(mc_entry, &port->mc_list->list,list)
 263                                 num_registrations += 2;
 264                 }
 265
 266         if (num_registrations) {
 267                 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
 268                 if (!arr)
 269                         goto out;  /* Keep the existing array */
 270         } else
 271                 goto out_update;
 272
 273         list_for_each_entry(adapter, &adapter_list, list) {
 274                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 275                         struct ehea_port *port = adapter->port[k];
 276
 277                         if (!port || (port->state != EHEA_PORT_UP))
 278                                 continue;
 279
 280                         if (num_registrations == 0)
 281                                 goto out_update;
 282
 283                         arr[i].adh = adapter->handle;
 284                         arr[i].port_id = port->logical_port_id;
 285                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 286                                           EHEA_BCMC_UNTAGGED;
 287                         arr[i++].macaddr = port->mac_addr;
 288
 289                         arr[i].adh = adapter->handle;
 290                         arr[i].port_id = port->logical_port_id;
 291                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 292                                           EHEA_BCMC_VLANID_ALL;
 293                         arr[i++].macaddr = port->mac_addr;
 294                         num_registrations -= 2;
 295
 296                         list_for_each_entry(mc_entry,
 297                                             &port->mc_list->list, list) {
 298                                 if (num_registrations == 0)
 299                                         goto out_update;
 300
 301                                 arr[i].adh = adapter->handle;
 302                                 arr[i].port_id = port->logical_port_id;
 303                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 304                                                   EHEA_BCMC_MULTICAST |
 305                                                   EHEA_BCMC_UNTAGGED;
 306                                 arr[i++].macaddr = mc_entry->macaddr;
 307
 308                                 arr[i].adh = adapter->handle;
 309                                 arr[i].port_id = port->logical_port_id;
 310                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 311                                                   EHEA_BCMC_MULTICAST |
 312                                                   EHEA_BCMC_VLANID_ALL;
 313                                 arr[i++].macaddr = mc_entry->macaddr;
 314                                 num_registrations -= 2;
 315                         }
 316                 }
 317         }
 318
 319 out_update:
 320         kfree(ehea_bcmc_regs.arr);
 321         ehea_bcmc_regs.arr = arr;
 322         ehea_bcmc_regs.num_entries = i;
 323 out:
 324         spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
 325 }
 326
 327 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
 328 {
 329         struct ehea_port *port = netdev_priv(dev);
 330         struct net_device_stats *stats = &port->stats;
 331         struct hcp_ehea_port_cb2 *cb2;
 332         u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0;
 333         int i;
 334
 335         memset(stats, 0, sizeof(*stats));
 336
 337         cb2 = (void *)get_zeroed_page(GFP_KERNEL);
 338         if (!cb2) {
 339                 ehea_error("no mem for cb2");
 340                 goto out;
 341         }
 342
 343         hret = ehea_h_query_ehea_port(port->adapter->handle,
 344                                       port->logical_port_id,
 345                                       H_PORT_CB2, H_PORT_CB2_ALL, cb2);
 346         if (hret != H_SUCCESS) {
 347                 ehea_error("query_ehea_port failed");
 348                 goto out_herr;
 349         }
 350
 351         if (netif_msg_hw(port))
 352                 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
 353
 354         rx_packets = 0;
 355         for (i = 0; i < port->num_def_qps; i++) {
 356                 rx_packets += port->port_res[i].rx_packets;
 357                 rx_bytes   += port->port_res[i].rx_bytes;
 358         }
 359
 360         tx_packets = 0;
 361         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 362                 tx_packets += port->port_res[i].tx_packets;
 363                 tx_bytes   += port->port_res[i].tx_bytes;
 364         }
 365
 366         stats->tx_packets = tx_packets;
 367         stats->multicast = cb2->rxmcp;
 368         stats->rx_errors = cb2->rxuerr;
 369         stats->rx_bytes = rx_bytes;
 370         stats->tx_bytes = tx_bytes;
 371         stats->rx_packets = rx_packets;
 372
 373 out_herr:
 374         free_page((unsigned long)cb2);
 375 out:
 376         return stats;
 377 }
 378
 379 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 380 {
 381         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 382         struct net_device *dev = pr->port->netdev;
 383         int max_index_mask = pr->rq1_skba.len - 1;
 384         int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
 385         int adder = 0;
 386         int i;
 387
 388         pr->rq1_skba.os_skbs = 0;
 389
 390         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 391                 if (nr_of_wqes > 0)
 392                         pr->rq1_skba.index = index;
 393                 pr->rq1_skba.os_skbs = fill_wqes;
 394                 return;
 395         }
 396
 397         for (i = 0; i < fill_wqes; i++) {
 398                 if (!skb_arr_rq1[index]) {
 399                         skb_arr_rq1[index] = netdev_alloc_skb(dev,
 400                                                               EHEA_L_PKT_SIZE);
 401                         if (!skb_arr_rq1[index]) {
 402                                 ehea_info("Unable to allocate enough skb in the array\n");
 403                                 pr->rq1_skba.os_skbs = fill_wqes - i;
 404                                 break;
 405                         }
 406                 }
 407                 index--;
 408                 index &= max_index_mask;
 409                 adder++;
 410         }
 411
 412         if (adder == 0)
 413                 return;
 414
 415         /* Ring doorbell */
 416         ehea_update_rq1a(pr->qp, adder);
 417 }
 418
 419 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 420 {
 421         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 422         struct net_device *dev = pr->port->netdev;
 423         int i;
 424
 425         if (nr_rq1a > pr->rq1_skba.len) {
 426                 ehea_error("NR_RQ1A bigger than skb array len\n");
 427                 return;
 428         }
 429
 430         for (i = 0; i < nr_rq1a; i++) {
 431                 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
 432                 if (!skb_arr_rq1[i]) {
 433                         ehea_info("No enough memory to allocate skb array\n");
 434                         break;
 435                 }
 436         }
 437         /* Ring doorbell */
 438         ehea_update_rq1a(pr->qp, i);
 439 }
 440
 441 static int ehea_refill_rq_def(struct ehea_port_res *pr,
 442                               struct ehea_q_skb_arr *q_skba, int rq_nr,
 443                               int num_wqes, int wqe_type, int packet_size)
 444 {
 445         struct net_device *dev = pr->port->netdev;
 446         struct ehea_qp *qp = pr->qp;
 447         struct sk_buff **skb_arr = q_skba->arr;
 448         struct ehea_rwqe *rwqe;
 449         int i, index, max_index_mask, fill_wqes;
 450         int adder = 0;
 451         int ret = 0;
 452
 453         fill_wqes = q_skba->os_skbs + num_wqes;
 454         q_skba->os_skbs = 0;
 455
 456         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 457                 q_skba->os_skbs = fill_wqes;
 458                 return ret;
 459         }
 460
 461         index = q_skba->index;
 462         max_index_mask = q_skba->len - 1;
 463         for (i = 0; i < fill_wqes; i++) {
 464                 u64 tmp_addr;
 465                 struct sk_buff *skb;
 466
 467                 skb = netdev_alloc_skb_ip_align(dev, packet_size);
 468                 if (!skb) {
 469                         q_skba->os_skbs = fill_wqes - i;
 470                         if (q_skba->os_skbs == q_skba->len - 2) {
 471                                 ehea_info("%s: rq%i ran dry - no mem for skb",
 472                                           pr->port->netdev->name, rq_nr);
 473                                 ret = -ENOMEM;
 474                         }
 475                         break;
 476                 }
 477
 478                 skb_arr[index] = skb;
 479                 tmp_addr = ehea_map_vaddr(skb->data);
 480                 if (tmp_addr == -1) {
 481                         dev_kfree_skb(skb);
 482                         q_skba->os_skbs = fill_wqes - i;
 483                         ret = 0;
 484                         break;
 485                 }
 486
 487                 rwqe = ehea_get_next_rwqe(qp, rq_nr);
 488                 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
 489                             | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
 490                 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
 491                 rwqe->sg_list[0].vaddr = tmp_addr;
 492                 rwqe->sg_list[0].len = packet_size;
 493                 rwqe->data_segments = 1;
 494
 495                 index++;
 496                 index &= max_index_mask;
 497                 adder++;
 498         }
 499
 500         q_skba->index = index;
 501         if (adder == 0)
 502                 goto out;
 503
 504         /* Ring doorbell */
 505         iosync();
 506         if (rq_nr == 2)
 507                 ehea_update_rq2a(pr->qp, adder);
 508         else
 509                 ehea_update_rq3a(pr->qp, adder);
 510 out:
 511         return ret;
 512 }
 513
 514
 515 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
 516 {
 517         return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
 518                                   nr_of_wqes, EHEA_RWQE2_TYPE,
 519                                   EHEA_RQ2_PKT_SIZE);
 520 }
 521
 522
 523 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
 524 {
 525         return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
 526                                   nr_of_wqes, EHEA_RWQE3_TYPE,
 527                                   EHEA_MAX_PACKET_SIZE);
 528 }
 529
 530 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
 531 {
 532         *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
 533         if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
 534                 return 0;
 535         if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
 536             (cqe->header_length == 0))
 537                 return 0;
 538         return -EINVAL;
 539 }
 540
 541 static inline void ehea_fill_skb(struct net_device *dev,
 542                                  struct sk_buff *skb, struct ehea_cqe *cqe)
 543 {
 544         int length = cqe->num_bytes_transfered - 4;     /*remove CRC */
 545
 546         skb_put(skb, length);
 547         skb->protocol = eth_type_trans(skb, dev);
 548
 549         /* The packet was not an IPV4 packet so a complemented checksum was
 550            calculated. The value is found in the Internet Checksum field. */
 551         if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
 552                 skb->ip_summed = CHECKSUM_COMPLETE;
 553                 skb->csum = csum_unfold(~cqe->inet_checksum_value);
 554         } else
 555                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 556 }
 557
 558 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
 559                                                int arr_len,
 560                                                struct ehea_cqe *cqe)
 561 {
 562         int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 563         struct sk_buff *skb;
 564         void *pref;
 565         int x;
 566
 567         x = skb_index + 1;
 568         x &= (arr_len - 1);
 569
 570         pref = skb_array[x];
 571         if (pref) {
 572                 prefetchw(pref);
 573                 prefetchw(pref + EHEA_CACHE_LINE);
 574
 575                 pref = (skb_array[x]->data);
 576                 prefetch(pref);
 577                 prefetch(pref + EHEA_CACHE_LINE);
 578                 prefetch(pref + EHEA_CACHE_LINE * 2);
 579                 prefetch(pref + EHEA_CACHE_LINE * 3);
 580         }
 581
 582         skb = skb_array[skb_index];
 583         skb_array[skb_index] = NULL;
 584         return skb;
 585 }
 586
 587 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
 588                                                   int arr_len, int wqe_index)
 589 {
 590         struct sk_buff *skb;
 591         void *pref;
 592         int x;
 593
 594         x = wqe_index + 1;
 595         x &= (arr_len - 1);
 596
 597         pref = skb_array[x];
 598         if (pref) {
 599                 prefetchw(pref);
 600                 prefetchw(pref + EHEA_CACHE_LINE);
 601
 602                 pref = (skb_array[x]->data);
 603                 prefetchw(pref);
 604                 prefetchw(pref + EHEA_CACHE_LINE);
 605         }
 606
 607         skb = skb_array[wqe_index];
 608         skb_array[wqe_index] = NULL;
 609         return skb;
 610 }
 611
 612 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
 613                                  struct ehea_cqe *cqe, int *processed_rq2,
 614                                  int *processed_rq3)
 615 {
 616         struct sk_buff *skb;
 617
 618         if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
 619                 pr->p_stats.err_tcp_cksum++;
 620         if (cqe->status & EHEA_CQE_STAT_ERR_IP)
 621                 pr->p_stats.err_ip_cksum++;
 622         if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
 623                 pr->p_stats.err_frame_crc++;
 624
 625         if (rq == 2) {
 626                 *processed_rq2 += 1;
 627                 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
 628                 dev_kfree_skb(skb);
 629         } else if (rq == 3) {
 630                 *processed_rq3 += 1;
 631                 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
 632                 dev_kfree_skb(skb);
 633         }
 634
 635         if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
 636                 if (netif_msg_rx_err(pr->port)) {
 637                         ehea_error("Critical receive error for QP %d. "
 638                                    "Resetting port.", pr->qp->init_attr.qp_nr);
 639                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 640                 }
 641                 ehea_schedule_port_reset(pr->port);
 642                 return 1;
 643         }
 644
 645         return 0;
 646 }
 647
 648 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
 649                        void **tcph, u64 *hdr_flags, void *priv)
 650 {
 651         struct ehea_cqe *cqe = priv;
 652         unsigned int ip_len;
 653         struct iphdr *iph;
 654
 655         /* non tcp/udp packets */
 656         if (!cqe->header_length)
 657                 return -1;
 658
 659         /* non tcp packet */
 660         skb_reset_network_header(skb);
 661         iph = ip_hdr(skb);
 662         if (iph->protocol != IPPROTO_TCP)
 663                 return -1;
 664
 665         ip_len = ip_hdrlen(skb);
 666         skb_set_transport_header(skb, ip_len);
 667         *tcph = tcp_hdr(skb);
 668
 669         /* check if ip header and tcp header are complete */
 670         if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
 671                 return -1;
 672
 673         *hdr_flags = LRO_IPV4 | LRO_TCP;
 674         *iphdr = iph;
 675
 676         return 0;
 677 }
 678
 679 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
 680                           struct sk_buff *skb)
 681 {
 682         int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
 683                               pr->port->vgrp);
 684
 685         if (skb->dev->features & NETIF_F_LRO) {
 686                 if (vlan_extracted)
 687                         lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
 688                                                      pr->port->vgrp,
 689                                                      cqe->vlan_tag,
 690                                                      cqe);
 691                 else
 692                         lro_receive_skb(&pr->lro_mgr, skb, cqe);
 693         } else {
 694                 if (vlan_extracted)
 695                         vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
 696                                                  cqe->vlan_tag);
 697                 else
 698                         netif_receive_skb(skb);
 699         }
 700 }
 701
 702 static int ehea_proc_rwqes(struct net_device *dev,
 703                            struct ehea_port_res *pr,
 704                            int budget)
 705 {
 706         struct ehea_port *port = pr->port;
 707         struct ehea_qp *qp = pr->qp;
 708         struct ehea_cqe *cqe;
 709         struct sk_buff *skb;
 710         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 711         struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
 712         struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
 713         int skb_arr_rq1_len = pr->rq1_skba.len;
 714         int skb_arr_rq2_len = pr->rq2_skba.len;
 715         int skb_arr_rq3_len = pr->rq3_skba.len;
 716         int processed, processed_rq1, processed_rq2, processed_rq3;
 717         u64 processed_bytes = 0;
 718         int wqe_index, last_wqe_index, rq, port_reset;
 719
 720         processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
 721         last_wqe_index = 0;
 722
 723         cqe = ehea_poll_rq1(qp, &wqe_index);
 724         while ((processed < budget) && cqe) {
 725                 ehea_inc_rq1(qp);
 726                 processed_rq1++;
 727                 processed++;
 728                 if (netif_msg_rx_status(port))
 729                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 730
 731                 last_wqe_index = wqe_index;
 732                 rmb();
 733                 if (!ehea_check_cqe(cqe, &rq)) {
 734                         if (rq == 1) {
 735                                 /* LL RQ1 */
 736                                 skb = get_skb_by_index_ll(skb_arr_rq1,
 737                                                           skb_arr_rq1_len,
 738                                                           wqe_index);
 739                                 if (unlikely(!skb)) {
 740                                         if (netif_msg_rx_err(port))
 741                                                 ehea_error("LL rq1: skb=NULL");
 742
 743                                         skb = netdev_alloc_skb(dev,
 744                                                                EHEA_L_PKT_SIZE);
 745                                         if (!skb) {
 746                                                 ehea_info("Not enough memory to allocate skb\n");
 747                                                 break;
 748                                         }
 749                                 }
 750                                 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
 751                                                  cqe->num_bytes_transfered - 4);
 752                                 ehea_fill_skb(dev, skb, cqe);
 753                         } else if (rq == 2) {
 754                                 /* RQ2 */
 755                                 skb = get_skb_by_index(skb_arr_rq2,
 756                                                        skb_arr_rq2_len, cqe);
 757                                 if (unlikely(!skb)) {
 758                                         if (netif_msg_rx_err(port))
 759                                                 ehea_error("rq2: skb=NULL");
 760                                         break;
 761                                 }
 762                                 ehea_fill_skb(dev, skb, cqe);
 763                                 processed_rq2++;
 764                         } else {
 765                                 /* RQ3 */
 766                                 skb = get_skb_by_index(skb_arr_rq3,
 767                                                        skb_arr_rq3_len, cqe);
 768                                 if (unlikely(!skb)) {
 769                                         if (netif_msg_rx_err(port))
 770                                                 ehea_error("rq3: skb=NULL");
 771                                         break;
 772                                 }
 773                                 ehea_fill_skb(dev, skb, cqe);
 774                                 processed_rq3++;
 775                         }
 776
 777                         processed_bytes += skb->len;
 778                         ehea_proc_skb(pr, cqe, skb);
 779                 } else {
 780                         pr->p_stats.poll_receive_errors++;
 781                         port_reset = ehea_treat_poll_error(pr, rq, cqe,
 782                                                            &processed_rq2,
 783                                                            &processed_rq3);
 784                         if (port_reset)
 785                                 break;
 786                 }
 787                 cqe = ehea_poll_rq1(qp, &wqe_index);
 788         }
 789         if (dev->features & NETIF_F_LRO)
 790                 lro_flush_all(&pr->lro_mgr);
 791
 792         pr->rx_packets += processed;
 793         pr->rx_bytes += processed_bytes;
 794
 795         ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
 796         ehea_refill_rq2(pr, processed_rq2);
 797         ehea_refill_rq3(pr, processed_rq3);
 798
 799         return processed;
 800 }
 801
 802 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
 803
 804 static void reset_sq_restart_flag(struct ehea_port *port)
 805 {
 806         int i;
 807
 808         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 809                 struct ehea_port_res *pr = &port->port_res[i];
 810                 pr->sq_restart_flag = 0;
 811         }
 812         wake_up(&port->restart_wq);
 813 }
 814
 815 static void check_sqs(struct ehea_port *port)
 816 {
 817         struct ehea_swqe *swqe;
 818         int swqe_index;
 819         int i, k;
 820
 821         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 822                 struct ehea_port_res *pr = &port->port_res[i];
 823                 int ret;
 824                 k = 0;
 825                 swqe = ehea_get_swqe(pr->qp, &swqe_index);
 826                 memset(swqe, 0, SWQE_HEADER_SIZE);
 827                 atomic_dec(&pr->swqe_avail);
 828
 829                 swqe->tx_control |= EHEA_SWQE_PURGE;
 830                 swqe->wr_id = SWQE_RESTART_CHECK;
 831                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
 832                 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
 833                 swqe->immediate_data_length = 80;
 834
 835                 ehea_post_swqe(pr->qp, swqe);
 836
 837                 ret = wait_event_timeout(port->restart_wq,
 838                                          pr->sq_restart_flag == 0,
 839                                          msecs_to_jiffies(100));
 840
 841                 if (!ret) {
 842                         ehea_error("HW/SW queues out of sync");
 843                         ehea_schedule_port_reset(pr->port);
 844                         return;
 845                 }
 846         }
 847 }
 848
 849
 850 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
 851 {
 852         struct sk_buff *skb;
 853         struct ehea_cq *send_cq = pr->send_cq;
 854         struct ehea_cqe *cqe;
 855         int quota = my_quota;
 856         int cqe_counter = 0;
 857         int swqe_av = 0;
 858         int index;
 859         unsigned long flags;
 860
 861         cqe = ehea_poll_cq(send_cq);
 862         while (cqe && (quota > 0)) {
 863                 ehea_inc_cq(send_cq);
 864
 865                 cqe_counter++;
 866                 rmb();
 867
 868                 if (cqe->wr_id == SWQE_RESTART_CHECK) {
 869                         pr->sq_restart_flag = 1;
 870                         swqe_av++;
 871                         break;
 872                 }
 873
 874                 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
 875                         ehea_error("Bad send completion status=0x%04X",
 876                                    cqe->status);
 877
 878                         if (netif_msg_tx_err(pr->port))
 879                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
 880
 881                         if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
 882                                 ehea_error("Resetting port");
 883                                 ehea_schedule_port_reset(pr->port);
 884                                 break;
 885                         }
 886                 }
 887
 888                 if (netif_msg_tx_done(pr->port))
 889                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 890
 891                 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
 892                            == EHEA_SWQE2_TYPE)) {
 893
 894                         index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 895                         skb = pr->sq_skba.arr[index];
 896                         dev_kfree_skb(skb);
 897                         pr->sq_skba.arr[index] = NULL;
 898                 }
 899
 900                 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
 901                 quota--;
 902
 903                 cqe = ehea_poll_cq(send_cq);
 904         }
 905
 906         ehea_update_feca(send_cq, cqe_counter);
 907         atomic_add(swqe_av, &pr->swqe_avail);
 908
 909         spin_lock_irqsave(&pr->netif_queue, flags);
 910
 911         if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
 912                                   >= pr->swqe_refill_th)) {
 913                 netif_wake_queue(pr->port->netdev);
 914                 pr->queue_stopped = 0;
 915         }
 916         spin_unlock_irqrestore(&pr->netif_queue, flags);
 917         wake_up(&pr->port->swqe_avail_wq);
 918
 919         return cqe;
 920 }
 921
 922 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
 923 #define EHEA_POLL_MAX_CQES 65535
 924
 925 static int ehea_poll(struct napi_struct *napi, int budget)
 926 {
 927         struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
 928                                                 napi);
 929         struct net_device *dev = pr->port->netdev;
 930         struct ehea_cqe *cqe;
 931         struct ehea_cqe *cqe_skb = NULL;
 932         int force_irq, wqe_index;
 933         int rx = 0;
 934
 935         force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
 936         cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 937
 938         if (!force_irq)
 939                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 940
 941         while ((rx != budget) || force_irq) {
 942                 pr->poll_counter = 0;
 943                 force_irq = 0;
 944                 napi_complete(napi);
 945                 ehea_reset_cq_ep(pr->recv_cq);
 946                 ehea_reset_cq_ep(pr->send_cq);
 947                 ehea_reset_cq_n1(pr->recv_cq);
 948                 ehea_reset_cq_n1(pr->send_cq);
 949                 rmb();
 950                 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
 951                 cqe_skb = ehea_poll_cq(pr->send_cq);
 952
 953                 if (!cqe && !cqe_skb)
 954                         return rx;
 955
 956                 if (!napi_reschedule(napi))
 957                         return rx;
 958
 959                 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 960                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 961         }
 962
 963         pr->poll_counter++;
 964         return rx;
 965 }
 966
 967 #ifdef CONFIG_NET_POLL_CONTROLLER
 968 static void ehea_netpoll(struct net_device *dev)
 969 {
 970         struct ehea_port *port = netdev_priv(dev);
 971         int i;
 972
 973         for (i = 0; i < port->num_def_qps; i++)
 974                 napi_schedule(&port->port_res[i].napi);
 975 }
 976 #endif
 977
 978 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 979 {
 980         struct ehea_port_res *pr = param;
 981
 982         napi_schedule(&pr->napi);
 983
 984         return IRQ_HANDLED;
 985 }
 986
 987 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 988 {
 989         struct ehea_port *port = param;
 990         struct ehea_eqe *eqe;
 991         struct ehea_qp *qp;
 992         u32 qp_token;
 993         u64 resource_type, aer, aerr;
 994         int reset_port = 0;
 995
 996         eqe = ehea_poll_eq(port->qp_eq);
 997
 998         while (eqe) {
 999                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
1000                 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
1001                            eqe->entry, qp_token);
1002
1003                 qp = port->port_res[qp_token].qp;
1004
1005                 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
1006                                                 &aer, &aerr);
1007
1008                 if (resource_type == EHEA_AER_RESTYPE_QP) {
1009                         if ((aer & EHEA_AER_RESET_MASK) ||
1010                             (aerr & EHEA_AERR_RESET_MASK))
1011                                  reset_port = 1;
1012                 } else
1013                         reset_port = 1;   /* Reset in case of CQ or EQ error */
1014
1015                 eqe = ehea_poll_eq(port->qp_eq);
1016         }
1017
1018         if (reset_port) {
1019                 ehea_error("Resetting port");
1020                 ehea_schedule_port_reset(port);
1021         }
1022
1023         return IRQ_HANDLED;
1024 }
1025
1026 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1027                                        int logical_port)
1028 {
1029         int i;
1030
1031         for (i = 0; i < EHEA_MAX_PORTS; i++)
1032                 if (adapter->port[i])
1033                         if (adapter->port[i]->logical_port_id == logical_port)
1034                                 return adapter->port[i];
1035         return NULL;
1036 }
1037
1038 int ehea_sense_port_attr(struct ehea_port *port)
1039 {
1040         int ret;
1041         u64 hret;
1042         struct hcp_ehea_port_cb0 *cb0;
1043
1044         /* may be called via ehea_neq_tasklet() */
1045         cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
1046         if (!cb0) {
1047                 ehea_error("no mem for cb0");
1048                 ret = -ENOMEM;
1049                 goto out;
1050         }
1051
1052         hret = ehea_h_query_ehea_port(port->adapter->handle,
1053                                       port->logical_port_id, H_PORT_CB0,
1054                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1055                                       cb0);
1056         if (hret != H_SUCCESS) {
1057                 ret = -EIO;
1058                 goto out_free;
1059         }
1060
1061         /* MAC address */
1062         port->mac_addr = cb0->port_mac_addr << 16;
1063
1064         if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
1065                 ret = -EADDRNOTAVAIL;
1066                 goto out_free;
1067         }
1068
1069         /* Port speed */
1070         switch (cb0->port_speed) {
1071         case H_SPEED_10M_H:
1072                 port->port_speed = EHEA_SPEED_10M;
1073                 port->full_duplex = 0;
1074                 break;
1075         case H_SPEED_10M_F:
1076                 port->port_speed = EHEA_SPEED_10M;
1077                 port->full_duplex = 1;
1078                 break;
1079         case H_SPEED_100M_H:
1080                 port->port_speed = EHEA_SPEED_100M;
1081                 port->full_duplex = 0;
1082                 break;
1083         case H_SPEED_100M_F:
1084                 port->port_speed = EHEA_SPEED_100M;
1085                 port->full_duplex = 1;
1086                 break;
1087         case H_SPEED_1G_F:
1088                 port->port_speed = EHEA_SPEED_1G;
1089                 port->full_duplex = 1;
1090                 break;
1091         case H_SPEED_10G_F:
1092                 port->port_speed = EHEA_SPEED_10G;
1093                 port->full_duplex = 1;
1094                 break;
1095         default:
1096                 port->port_speed = 0;
1097                 port->full_duplex = 0;
1098                 break;
1099         }
1100
1101         port->autoneg = 1;
1102         port->num_mcs = cb0->num_default_qps;
1103
1104         /* Number of default QPs */
1105         if (use_mcs)
1106                 port->num_def_qps = cb0->num_default_qps;
1107         else
1108                 port->num_def_qps = 1;
1109
1110         if (!port->num_def_qps) {
1111                 ret = -EINVAL;
1112                 goto out_free;
1113         }
1114
1115         port->num_tx_qps = num_tx_qps;
1116
1117         if (port->num_def_qps >= port->num_tx_qps)
1118                 port->num_add_tx_qps = 0;
1119         else
1120                 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
1121
1122         ret = 0;
1123 out_free:
1124         if (ret || netif_msg_probe(port))
1125                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1126         free_page((unsigned long)cb0);
1127 out:
1128         return ret;
1129 }
1130
1131 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1132 {
1133         struct hcp_ehea_port_cb4 *cb4;
1134         u64 hret;
1135         int ret = 0;
1136
1137         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1138         if (!cb4) {
1139                 ehea_error("no mem for cb4");
1140                 ret = -ENOMEM;
1141                 goto out;
1142         }
1143
1144         cb4->port_speed = port_speed;
1145
1146         netif_carrier_off(port->netdev);
1147
1148         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1149                                        port->logical_port_id,
1150                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1151         if (hret == H_SUCCESS) {
1152                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1153
1154                 hret = ehea_h_query_ehea_port(port->adapter->handle,
1155                                               port->logical_port_id,
1156                                               H_PORT_CB4, H_PORT_CB4_SPEED,
1157                                               cb4);
1158                 if (hret == H_SUCCESS) {
1159                         switch (cb4->port_speed) {
1160                         case H_SPEED_10M_H:
1161                                 port->port_speed = EHEA_SPEED_10M;
1162                                 port->full_duplex = 0;
1163                                 break;
1164                         case H_SPEED_10M_F:
1165                                 port->port_speed = EHEA_SPEED_10M;
1166                                 port->full_duplex = 1;
1167                                 break;
1168                         case H_SPEED_100M_H:
1169                                 port->port_speed = EHEA_SPEED_100M;
1170                                 port->full_duplex = 0;
1171                                 break;
1172                         case H_SPEED_100M_F:
1173                                 port->port_speed = EHEA_SPEED_100M;
1174                                 port->full_duplex = 1;
1175                                 break;
1176                         case H_SPEED_1G_F:
1177                                 port->port_speed = EHEA_SPEED_1G;
1178                                 port->full_duplex = 1;
1179                                 break;
1180                         case H_SPEED_10G_F:
1181                                 port->port_speed = EHEA_SPEED_10G;
1182                                 port->full_duplex = 1;
1183                                 break;
1184                         default:
1185                                 port->port_speed = 0;
1186                                 port->full_duplex = 0;
1187                                 break;
1188                         }
1189                 } else {
1190                         ehea_error("Failed sensing port speed");
1191                         ret = -EIO;
1192                 }
1193         } else {
1194                 if (hret == H_AUTHORITY) {
1195                         ehea_info("Hypervisor denied setting port speed");
1196                         ret = -EPERM;
1197                 } else {
1198                         ret = -EIO;
1199                         ehea_error("Failed setting port speed");
1200                 }
1201         }
1202         if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1203                 netif_carrier_on(port->netdev);
1204
1205         free_page((unsigned long)cb4);
1206 out:
1207         return ret;
1208 }
1209
1210 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1211 {
1212         int ret;
1213         u8 ec;
1214         u8 portnum;
1215         struct ehea_port *port;
1216
1217         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1218         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1219         port = ehea_get_port(adapter, portnum);
1220
1221         switch (ec) {
1222         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
1223
1224                 if (!port) {
1225                         ehea_error("unknown portnum %x", portnum);
1226                         break;
1227                 }
1228
1229                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1230                         if (!netif_carrier_ok(port->netdev)) {
1231                                 ret = ehea_sense_port_attr(port);
1232                                 if (ret) {
1233                                         ehea_error("failed resensing port "
1234                                                    "attributes");
1235                                         break;
1236                                 }
1237
1238                                 if (netif_msg_link(port))
1239                                         ehea_info("%s: Logical port up: %dMbps "
1240                                                   "%s Duplex",
1241                                                   port->netdev->name,
1242                                                   port->port_speed,
1243                                                   port->full_duplex ==
1244                                                   1 ? "Full" : "Half");
1245
1246                                 netif_carrier_on(port->netdev);
1247                                 netif_wake_queue(port->netdev);
1248                         }
1249                 } else
1250                         if (netif_carrier_ok(port->netdev)) {
1251                                 if (netif_msg_link(port))
1252                                         ehea_info("%s: Logical port down",
1253                                                   port->netdev->name);
1254                                 netif_carrier_off(port->netdev);
1255                                 netif_stop_queue(port->netdev);
1256                         }
1257
1258                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1259                         port->phy_link = EHEA_PHY_LINK_UP;
1260                         if (netif_msg_link(port))
1261                                 ehea_info("%s: Physical port up",
1262                                           port->netdev->name);
1263                         if (prop_carrier_state)
1264                                 netif_carrier_on(port->netdev);
1265                 } else {
1266                         port->phy_link = EHEA_PHY_LINK_DOWN;
1267                         if (netif_msg_link(port))
1268                                 ehea_info("%s: Physical port down",
1269                                           port->netdev->name);
1270                         if (prop_carrier_state)
1271                                 netif_carrier_off(port->netdev);
1272                 }
1273
1274                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1275                         ehea_info("External switch port is primary port");
1276                 else
1277                         ehea_info("External switch port is backup port");
1278
1279                 break;
1280         case EHEA_EC_ADAPTER_MALFUNC:
1281                 ehea_error("Adapter malfunction");
1282                 break;
1283         case EHEA_EC_PORT_MALFUNC:
1284                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1285                 netif_carrier_off(port->netdev);
1286                 netif_stop_queue(port->netdev);
1287                 break;
1288         default:
1289                 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1290                 break;
1291         }
1292 }
1293
1294 static void ehea_neq_tasklet(unsigned long data)
1295 {
1296         struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1297         struct ehea_eqe *eqe;
1298         u64 event_mask;
1299
1300         eqe = ehea_poll_eq(adapter->neq);
1301         ehea_debug("eqe=%p", eqe);
1302
1303         while (eqe) {
1304                 ehea_debug("*eqe=%lx", eqe->entry);
1305                 ehea_parse_eqe(adapter, eqe->entry);
1306                 eqe = ehea_poll_eq(adapter->neq);
1307                 ehea_debug("next eqe=%p", eqe);
1308         }
1309
1310         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1311                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1312                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1313
1314         ehea_h_reset_events(adapter->handle,
1315                             adapter->neq->fw_handle, event_mask);
1316 }
1317
1318 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1319 {
1320         struct ehea_adapter *adapter = param;
1321         tasklet_hi_schedule(&adapter->neq_tasklet);
1322         return IRQ_HANDLED;
1323 }
1324
1325
1326 static int ehea_fill_port_res(struct ehea_port_res *pr)
1327 {
1328         int ret;
1329         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1330
1331         ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1332                                - init_attr->act_nr_rwqes_rq2
1333                                - init_attr->act_nr_rwqes_rq3 - 1);
1334
1335         ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1336
1337         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1338
1339         return ret;
1340 }
1341
1342 static int ehea_reg_interrupts(struct net_device *dev)
1343 {
1344         struct ehea_port *port = netdev_priv(dev);
1345         struct ehea_port_res *pr;
1346         int i, ret;
1347
1348
1349         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1350                  dev->name);
1351
1352         ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1353                                   ehea_qp_aff_irq_handler,
1354                                   IRQF_DISABLED, port->int_aff_name, port);
1355         if (ret) {
1356                 ehea_error("failed registering irq for qp_aff_irq_handler:"
1357                            "ist=%X", port->qp_eq->attr.ist1);
1358                 goto out_free_qpeq;
1359         }
1360
1361         if (netif_msg_ifup(port))
1362                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1363                           "registered", port->qp_eq->attr.ist1);
1364
1365
1366         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1367                 pr = &port->port_res[i];
1368                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1369                          "%s-queue%d", dev->name, i);
1370                 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1371                                           ehea_recv_irq_handler,
1372                                           IRQF_DISABLED, pr->int_send_name,
1373                                           pr);
1374                 if (ret) {
1375                         ehea_error("failed registering irq for ehea_queue "
1376                                    "port_res_nr:%d, ist=%X", i,
1377                                    pr->eq->attr.ist1);
1378                         goto out_free_req;
1379                 }
1380                 if (netif_msg_ifup(port))
1381                         ehea_info("irq_handle 0x%X for function ehea_queue_int "
1382                                   "%d registered", pr->eq->attr.ist1, i);
1383         }
1384 out:
1385         return ret;
1386
1387
1388 out_free_req:
1389         while (--i >= 0) {
1390                 u32 ist = port->port_res[i].eq->attr.ist1;
1391                 ibmebus_free_irq(ist, &port->port_res[i]);
1392         }
1393
1394 out_free_qpeq:
1395         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1396         i = port->num_def_qps;
1397
1398         goto out;
1399
1400 }
1401
1402 static void ehea_free_interrupts(struct net_device *dev)
1403 {
1404         struct ehea_port *port = netdev_priv(dev);
1405         struct ehea_port_res *pr;
1406         int i;
1407
1408         /* send */
1409
1410         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1411                 pr = &port->port_res[i];
1412                 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1413                 if (netif_msg_intr(port))
1414                         ehea_info("free send irq for res %d with handle 0x%X",
1415                                   i, pr->eq->attr.ist1);
1416         }
1417
1418         /* associated events */
1419         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1420         if (netif_msg_intr(port))
1421                 ehea_info("associated event interrupt for handle 0x%X freed",
1422                           port->qp_eq->attr.ist1);
1423 }
1424
1425 static int ehea_configure_port(struct ehea_port *port)
1426 {
1427         int ret, i;
1428         u64 hret, mask;
1429         struct hcp_ehea_port_cb0 *cb0;
1430
1431         ret = -ENOMEM;
1432         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1433         if (!cb0)
1434                 goto out;
1435
1436         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1437                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1438                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1439                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1440                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1441                                       PXLY_RC_VLAN_FILTER)
1442                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1443
1444         for (i = 0; i < port->num_mcs; i++)
1445                 if (use_mcs)
1446                         cb0->default_qpn_arr[i] =
1447                                 port->port_res[i].qp->init_attr.qp_nr;
1448                 else
1449                         cb0->default_qpn_arr[i] =
1450                                 port->port_res[0].qp->init_attr.qp_nr;
1451
1452         if (netif_msg_ifup(port))
1453                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1454
1455         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1456              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1457
1458         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1459                                        port->logical_port_id,
1460                                        H_PORT_CB0, mask, cb0);
1461         ret = -EIO;
1462         if (hret != H_SUCCESS)
1463                 goto out_free;
1464
1465         ret = 0;
1466
1467 out_free:
1468         free_page((unsigned long)cb0);
1469 out:
1470         return ret;
1471 }
1472
1473 int ehea_gen_smrs(struct ehea_port_res *pr)
1474 {
1475         int ret;
1476         struct ehea_adapter *adapter = pr->port->adapter;
1477
1478         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1479         if (ret)
1480                 goto out;
1481
1482         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1483         if (ret)
1484                 goto out_free;
1485
1486         return 0;
1487
1488 out_free:
1489         ehea_rem_mr(&pr->send_mr);
1490 out:
1491         ehea_error("Generating SMRS failed\n");
1492         return -EIO;
1493 }
1494
1495 int ehea_rem_smrs(struct ehea_port_res *pr)
1496 {
1497         if ((ehea_rem_mr(&pr->send_mr)) ||
1498             (ehea_rem_mr(&pr->recv_mr)))
1499                 return -EIO;
1500         else
1501                 return 0;
1502 }
1503
1504 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1505 {
1506         int arr_size = sizeof(void *) * max_q_entries;
1507
1508         q_skba->arr = vzalloc(arr_size);
1509         if (!q_skba->arr)
1510                 return -ENOMEM;
1511
1512         q_skba->len = max_q_entries;
1513         q_skba->index = 0;
1514         q_skba->os_skbs = 0;
1515
1516         return 0;
1517 }
1518
1519 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1520                               struct port_res_cfg *pr_cfg, int queue_token)
1521 {
1522         struct ehea_adapter *adapter = port->adapter;
1523         enum ehea_eq_type eq_type = EHEA_EQ;
1524         struct ehea_qp_init_attr *init_attr = NULL;
1525         int ret = -EIO;
1526         u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1527
1528         tx_bytes = pr->tx_bytes;
1529         tx_packets = pr->tx_packets;
1530         rx_bytes = pr->rx_bytes;
1531         rx_packets = pr->rx_packets;
1532
1533         memset(pr, 0, sizeof(struct ehea_port_res));
1534
1535         pr->tx_bytes = rx_bytes;
1536         pr->tx_packets = tx_packets;
1537         pr->rx_bytes = rx_bytes;
1538         pr->rx_packets = rx_packets;
1539
1540         pr->port = port;
1541         spin_lock_init(&pr->xmit_lock);
1542         spin_lock_init(&pr->netif_queue);
1543
1544         pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1545         if (!pr->eq) {
1546                 ehea_error("create_eq failed (eq)");
1547                 goto out_free;
1548         }
1549
1550         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1551                                      pr->eq->fw_handle,
1552                                      port->logical_port_id);
1553         if (!pr->recv_cq) {
1554                 ehea_error("create_cq failed (cq_recv)");
1555                 goto out_free;
1556         }
1557
1558         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1559                                      pr->eq->fw_handle,
1560                                      port->logical_port_id);
1561         if (!pr->send_cq) {
1562                 ehea_error("create_cq failed (cq_send)");
1563                 goto out_free;
1564         }
1565
1566         if (netif_msg_ifup(port))
1567                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1568                           pr->send_cq->attr.act_nr_of_cqes,
1569                           pr->recv_cq->attr.act_nr_of_cqes);
1570
1571         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1572         if (!init_attr) {
1573                 ret = -ENOMEM;
1574                 ehea_error("no mem for ehea_qp_init_attr");
1575                 goto out_free;
1576         }
1577
1578         init_attr->low_lat_rq1 = 1;
1579         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1580         init_attr->rq_count = 3;
1581         init_attr->qp_token = queue_token;
1582         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1583         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1584         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1585         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1586         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1587         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1588         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1589         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1590         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1591         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1592         init_attr->port_nr = port->logical_port_id;
1593         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1594         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1595         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1596
1597         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1598         if (!pr->qp) {
1599                 ehea_error("create_qp failed");
1600                 ret = -EIO;
1601                 goto out_free;
1602         }
1603
1604         if (netif_msg_ifup(port))
1605                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1606                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1607                           init_attr->act_nr_send_wqes,
1608                           init_attr->act_nr_rwqes_rq1,
1609                           init_attr->act_nr_rwqes_rq2,
1610                           init_attr->act_nr_rwqes_rq3);
1611
1612         pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1613
1614         ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1615         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1616         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1617         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1618         if (ret)
1619                 goto out_free;
1620
1621         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1622         if (ehea_gen_smrs(pr) != 0) {
1623                 ret = -EIO;
1624                 goto out_free;
1625         }
1626
1627         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1628
1629         kfree(init_attr);
1630
1631         netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1632
1633         pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1634         pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1635         pr->lro_mgr.lro_arr = pr->lro_desc;
1636         pr->lro_mgr.get_skb_header = get_skb_hdr;
1637         pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1638         pr->lro_mgr.dev = port->netdev;
1639         pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1640         pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1641
1642         ret = 0;
1643         goto out;
1644
1645 out_free:
1646         kfree(init_attr);
1647         vfree(pr->sq_skba.arr);
1648         vfree(pr->rq1_skba.arr);
1649         vfree(pr->rq2_skba.arr);
1650         vfree(pr->rq3_skba.arr);
1651         ehea_destroy_qp(pr->qp);
1652         ehea_destroy_cq(pr->send_cq);
1653         ehea_destroy_cq(pr->recv_cq);
1654         ehea_destroy_eq(pr->eq);
1655 out:
1656         return ret;
1657 }
1658
1659 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1660 {
1661         int ret, i;
1662
1663         if (pr->qp)
1664                 netif_napi_del(&pr->napi);
1665
1666         ret = ehea_destroy_qp(pr->qp);
1667
1668         if (!ret) {
1669                 ehea_destroy_cq(pr->send_cq);
1670                 ehea_destroy_cq(pr->recv_cq);
1671                 ehea_destroy_eq(pr->eq);
1672
1673                 for (i = 0; i < pr->rq1_skba.len; i++)
1674                         if (pr->rq1_skba.arr[i])
1675                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1676
1677                 for (i = 0; i < pr->rq2_skba.len; i++)
1678                         if (pr->rq2_skba.arr[i])
1679                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1680
1681                 for (i = 0; i < pr->rq3_skba.len; i++)
1682                         if (pr->rq3_skba.arr[i])
1683                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1684
1685                 for (i = 0; i < pr->sq_skba.len; i++)
1686                         if (pr->sq_skba.arr[i])
1687                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1688
1689                 vfree(pr->rq1_skba.arr);
1690                 vfree(pr->rq2_skba.arr);
1691                 vfree(pr->rq3_skba.arr);
1692                 vfree(pr->sq_skba.arr);
1693                 ret = ehea_rem_smrs(pr);
1694         }
1695         return ret;
1696 }
1697
1698 /*
1699  * The write_* functions store information in swqe which is used by
1700  * the hardware to calculate the ip/tcp/udp checksum
1701  */
1702
1703 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1704                                       const struct sk_buff *skb)
1705 {
1706         swqe->ip_start = skb_network_offset(skb);
1707         swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1708 }
1709
1710 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1711                                         const struct sk_buff *skb)
1712 {
1713         swqe->tcp_offset =
1714                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1715
1716         swqe->tcp_end = (u16)skb->len - 1;
1717 }
1718
1719 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1720                                         const struct sk_buff *skb)
1721 {
1722         swqe->tcp_offset =
1723                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1724
1725         swqe->tcp_end = (u16)skb->len - 1;
1726 }
1727
1728
1729 static void write_swqe2_TSO(struct sk_buff *skb,
1730                             struct ehea_swqe *swqe, u32 lkey)
1731 {
1732         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1733         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1734         int skb_data_size = skb_headlen(skb);
1735         int headersize;
1736
1737         /* Packet is TCP with TSO enabled */
1738         swqe->tx_control |= EHEA_SWQE_TSO;
1739         swqe->mss = skb_shinfo(skb)->gso_size;
1740         /* copy only eth/ip/tcp headers to immediate data and
1741          * the rest of skb->data to sg1entry
1742          */
1743         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1744
1745         skb_data_size = skb_headlen(skb);
1746
1747         if (skb_data_size >= headersize) {
1748                 /* copy immediate data */
1749                 skb_copy_from_linear_data(skb, imm_data, headersize);
1750                 swqe->immediate_data_length = headersize;
1751
1752                 if (skb_data_size > headersize) {
1753                         /* set sg1entry data */
1754                         sg1entry->l_key = lkey;
1755                         sg1entry->len = skb_data_size - headersize;
1756                         sg1entry->vaddr =
1757                                 ehea_map_vaddr(skb->data + headersize);
1758                         swqe->descriptors++;
1759                 }
1760         } else
1761                 ehea_error("cannot handle fragmented headers");
1762 }
1763
1764 static void write_swqe2_nonTSO(struct sk_buff *skb,
1765                                struct ehea_swqe *swqe, u32 lkey)
1766 {
1767         int skb_data_size = skb_headlen(skb);
1768         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1769         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1770
1771         /* Packet is any nonTSO type
1772          *
1773          * Copy as much as possible skb->data to immediate data and
1774          * the rest to sg1entry
1775          */
1776         if (skb_data_size >= SWQE2_MAX_IMM) {
1777                 /* copy immediate data */
1778                 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1779
1780                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1781
1782                 if (skb_data_size > SWQE2_MAX_IMM) {
1783                         /* copy sg1entry data */
1784                         sg1entry->l_key = lkey;
1785                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1786                         sg1entry->vaddr =
1787                                 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1788                         swqe->descriptors++;
1789                 }
1790         } else {
1791                 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1792                 swqe->immediate_data_length = skb_data_size;
1793         }
1794 }
1795
1796 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1797                                     struct ehea_swqe *swqe, u32 lkey)
1798 {
1799         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1800         skb_frag_t *frag;
1801         int nfrags, sg1entry_contains_frag_data, i;
1802
1803         nfrags = skb_shinfo(skb)->nr_frags;
1804         sg1entry = &swqe->u.immdata_desc.sg_entry;
1805         sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1806         swqe->descriptors = 0;
1807         sg1entry_contains_frag_data = 0;
1808
1809         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1810                 write_swqe2_TSO(skb, swqe, lkey);
1811         else
1812                 write_swqe2_nonTSO(skb, swqe, lkey);
1813
1814         /* write descriptors */
1815         if (nfrags > 0) {
1816                 if (swqe->descriptors == 0) {
1817                         /* sg1entry not yet used */
1818                         frag = &skb_shinfo(skb)->frags[0];
1819
1820                         /* copy sg1entry data */
1821                         sg1entry->l_key = lkey;
1822                         sg1entry->len = frag->size;
1823                         sg1entry->vaddr =
1824                                 ehea_map_vaddr(page_address(frag->page)
1825                                                + frag->page_offset);
1826                         swqe->descriptors++;
1827                         sg1entry_contains_frag_data = 1;
1828                 }
1829
1830                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1831
1832                         frag = &skb_shinfo(skb)->frags[i];
1833                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1834
1835                         sgentry->l_key = lkey;
1836                         sgentry->len = frag->size;
1837                         sgentry->vaddr =
1838                                 ehea_map_vaddr(page_address(frag->page)
1839                                                + frag->page_offset);
1840                         swqe->descriptors++;
1841                 }
1842         }
1843 }
1844
1845 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1846 {
1847         int ret = 0;
1848         u64 hret;
1849         u8 reg_type;
1850
1851         /* De/Register untagged packets */
1852         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1853         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1854                                      port->logical_port_id,
1855                                      reg_type, port->mac_addr, 0, hcallid);
1856         if (hret != H_SUCCESS) {
1857                 ehea_error("%sregistering bc address failed (tagged)",
1858                            hcallid == H_REG_BCMC ? "" : "de");
1859                 ret = -EIO;
1860                 goto out_herr;
1861         }
1862
1863         /* De/Register VLAN packets */
1864         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1865         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1866                                      port->logical_port_id,
1867                                      reg_type, port->mac_addr, 0, hcallid);
1868         if (hret != H_SUCCESS) {
1869                 ehea_error("%sregistering bc address failed (vlan)",
1870                            hcallid == H_REG_BCMC ? "" : "de");
1871                 ret = -EIO;
1872         }
1873 out_herr:
1874         return ret;
1875 }
1876
1877 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1878 {
1879         struct ehea_port *port = netdev_priv(dev);
1880         struct sockaddr *mac_addr = sa;
1881         struct hcp_ehea_port_cb0 *cb0;
1882         int ret;
1883         u64 hret;
1884
1885         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1886                 ret = -EADDRNOTAVAIL;
1887                 goto out;
1888         }
1889
1890         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1891         if (!cb0) {
1892                 ehea_error("no mem for cb0");
1893                 ret = -ENOMEM;
1894                 goto out;
1895         }
1896
1897         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1898
1899         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1900
1901         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1902                                        port->logical_port_id, H_PORT_CB0,
1903                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1904         if (hret != H_SUCCESS) {
1905                 ret = -EIO;
1906                 goto out_free;
1907         }
1908
1909         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1910
1911         /* Deregister old MAC in pHYP */
1912         if (port->state == EHEA_PORT_UP) {
1913                 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1914                 if (ret)
1915                         goto out_upregs;
1916         }
1917
1918         port->mac_addr = cb0->port_mac_addr << 16;
1919
1920         /* Register new MAC in pHYP */
1921         if (port->state == EHEA_PORT_UP) {
1922                 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1923                 if (ret)
1924                         goto out_upregs;
1925         }
1926
1927         ret = 0;
1928
1929 out_upregs:
1930         ehea_update_bcmc_registrations();
1931 out_free:
1932         free_page((unsigned long)cb0);
1933 out:
1934         return ret;
1935 }
1936
1937 static void ehea_promiscuous_error(u64 hret, int enable)
1938 {
1939         if (hret == H_AUTHORITY)
1940                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1941                           enable == 1 ? "en" : "dis");
1942         else
1943                 ehea_error("failed %sabling promiscuous mode",
1944                            enable == 1 ? "en" : "dis");
1945 }
1946
1947 static void ehea_promiscuous(struct net_device *dev, int enable)
1948 {
1949         struct ehea_port *port = netdev_priv(dev);
1950         struct hcp_ehea_port_cb7 *cb7;
1951         u64 hret;
1952
1953         if (enable == port->promisc)
1954                 return;
1955
1956         cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1957         if (!cb7) {
1958                 ehea_error("no mem for cb7");
1959                 goto out;
1960         }
1961
1962         /* Modify Pxs_DUCQPN in CB7 */
1963         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1964
1965         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1966                                        port->logical_port_id,
1967                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1968         if (hret) {
1969                 ehea_promiscuous_error(hret, enable);
1970                 goto out;
1971         }
1972
1973         port->promisc = enable;
1974 out:
1975         free_page((unsigned long)cb7);
1976 }
1977
1978 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1979                                      u32 hcallid)
1980 {
1981         u64 hret;
1982         u8 reg_type;
1983
1984         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1985                  | EHEA_BCMC_UNTAGGED;
1986
1987         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1988                                      port->logical_port_id,
1989                                      reg_type, mc_mac_addr, 0, hcallid);
1990         if (hret)
1991                 goto out;
1992
1993         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1994                  | EHEA_BCMC_VLANID_ALL;
1995
1996         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1997                                      port->logical_port_id,
1998                                      reg_type, mc_mac_addr, 0, hcallid);
1999 out:
2000         return hret;
2001 }
2002
2003 static int ehea_drop_multicast_list(struct net_device *dev)
2004 {
2005         struct ehea_port *port = netdev_priv(dev);
2006         struct ehea_mc_list *mc_entry = port->mc_list;
2007         struct list_head *pos;
2008         struct list_head *temp;
2009         int ret = 0;
2010         u64 hret;
2011
2012         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2013                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2014
2015                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2016                                                  H_DEREG_BCMC);
2017                 if (hret) {
2018                         ehea_error("failed deregistering mcast MAC");
2019                         ret = -EIO;
2020                 }
2021
2022                 list_del(pos);
2023                 kfree(mc_entry);
2024         }
2025         return ret;
2026 }
2027
2028 static void ehea_allmulti(struct net_device *dev, int enable)
2029 {
2030         struct ehea_port *port = netdev_priv(dev);
2031         u64 hret;
2032
2033         if (!port->allmulti) {
2034                 if (enable) {
2035                         /* Enable ALLMULTI */
2036                         ehea_drop_multicast_list(dev);
2037                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2038                         if (!hret)
2039                                 port->allmulti = 1;
2040                         else
2041                                 ehea_error("failed enabling IFF_ALLMULTI");
2042                 }
2043         } else
2044                 if (!enable) {
2045                         /* Disable ALLMULTI */
2046                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2047                         if (!hret)
2048                                 port->allmulti = 0;
2049                         else
2050                                 ehea_error("failed disabling IFF_ALLMULTI");
2051                 }
2052 }
2053
2054 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
2055 {
2056         struct ehea_mc_list *ehea_mcl_entry;
2057         u64 hret;
2058
2059         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
2060         if (!ehea_mcl_entry) {
2061                 ehea_error("no mem for mcl_entry");
2062                 return;
2063         }
2064
2065         INIT_LIST_HEAD(&ehea_mcl_entry->list);
2066
2067         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2068
2069         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2070                                          H_REG_BCMC);
2071         if (!hret)
2072                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2073         else {
2074                 ehea_error("failed registering mcast MAC");
2075                 kfree(ehea_mcl_entry);
2076         }
2077 }
2078
2079 static void ehea_set_multicast_list(struct net_device *dev)
2080 {
2081         struct ehea_port *port = netdev_priv(dev);
2082         struct netdev_hw_addr *ha;
2083         int ret;
2084
2085         if (dev->flags & IFF_PROMISC) {
2086                 ehea_promiscuous(dev, 1);
2087                 return;
2088         }
2089         ehea_promiscuous(dev, 0);
2090
2091         if (dev->flags & IFF_ALLMULTI) {
2092                 ehea_allmulti(dev, 1);
2093                 goto out;
2094         }
2095         ehea_allmulti(dev, 0);
2096
2097         if (!netdev_mc_empty(dev)) {
2098                 ret = ehea_drop_multicast_list(dev);
2099                 if (ret) {
2100                         /* Dropping the current multicast list failed.
2101                          * Enabling ALL_MULTI is the best we can do.
2102                          */
2103                         ehea_allmulti(dev, 1);
2104                 }
2105
2106                 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
2107                         ehea_info("Mcast registration limit reached (0x%llx). "
2108                                   "Use ALLMULTI!",
2109                                   port->adapter->max_mc_mac);
2110                         goto out;
2111                 }
2112
2113                 netdev_for_each_mc_addr(ha, dev)
2114                         ehea_add_multicast_entry(port, ha->addr);
2115
2116         }
2117 out:
2118         ehea_update_bcmc_registrations();
2119 }
2120
2121 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2122 {
2123         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2124                 return -EINVAL;
2125         dev->mtu = new_mtu;
2126         return 0;
2127 }
2128
2129 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2130                        struct ehea_swqe *swqe, u32 lkey)
2131 {
2132         if (skb->protocol == htons(ETH_P_IP)) {
2133                 const struct iphdr *iph = ip_hdr(skb);
2134
2135                 /* IPv4 */
2136                 swqe->tx_control |= EHEA_SWQE_CRC
2137                                  | EHEA_SWQE_IP_CHECKSUM
2138                                  | EHEA_SWQE_TCP_CHECKSUM
2139                                  | EHEA_SWQE_IMM_DATA_PRESENT
2140                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2141
2142                 write_ip_start_end(swqe, skb);
2143
2144                 if (iph->protocol == IPPROTO_UDP) {
2145                         if ((iph->frag_off & IP_MF) ||
2146                             (iph->frag_off & IP_OFFSET))
2147                                 /* IP fragment, so don't change cs */
2148                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2149                         else
2150                                 write_udp_offset_end(swqe, skb);
2151                 } else if (iph->protocol == IPPROTO_TCP) {
2152                         write_tcp_offset_end(swqe, skb);
2153                 }
2154
2155                 /* icmp (big data) and ip segmentation packets (all other ip
2156                    packets) do not require any special handling */
2157
2158         } else {
2159                 /* Other Ethernet Protocol */
2160                 swqe->tx_control |= EHEA_SWQE_CRC
2161                                  | EHEA_SWQE_IMM_DATA_PRESENT
2162                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2163         }
2164
2165         write_swqe2_data(skb, dev, swqe, lkey);
2166 }
2167
2168 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2169                        struct ehea_swqe *swqe)
2170 {
2171         int nfrags = skb_shinfo(skb)->nr_frags;
2172         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2173         skb_frag_t *frag;
2174         int i;
2175
2176         if (skb->protocol == htons(ETH_P_IP)) {
2177                 const struct iphdr *iph = ip_hdr(skb);
2178
2179                 /* IPv4 */
2180                 write_ip_start_end(swqe, skb);
2181
2182                 if (iph->protocol == IPPROTO_TCP) {
2183                         swqe->tx_control |= EHEA_SWQE_CRC
2184                                          | EHEA_SWQE_IP_CHECKSUM
2185                                          | EHEA_SWQE_TCP_CHECKSUM
2186                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2187
2188                         write_tcp_offset_end(swqe, skb);
2189
2190                 } else if (iph->protocol == IPPROTO_UDP) {
2191                         if ((iph->frag_off & IP_MF) ||
2192                             (iph->frag_off & IP_OFFSET))
2193                                 /* IP fragment, so don't change cs */
2194                                 swqe->tx_control |= EHEA_SWQE_CRC
2195                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2196                         else {
2197                                 swqe->tx_control |= EHEA_SWQE_CRC
2198                                                  | EHEA_SWQE_IP_CHECKSUM
2199                                                  | EHEA_SWQE_TCP_CHECKSUM
2200                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2201
2202                                 write_udp_offset_end(swqe, skb);
2203                         }
2204                 } else {
2205                         /* icmp (big data) and
2206                            ip segmentation packets (all other ip packets) */
2207                         swqe->tx_control |= EHEA_SWQE_CRC
2208                                          | EHEA_SWQE_IP_CHECKSUM
2209                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2210                 }
2211         } else {
2212                 /* Other Ethernet Protocol */
2213                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2214         }
2215         /* copy (immediate) data */
2216         if (nfrags == 0) {
2217                 /* data is in a single piece */
2218                 skb_copy_from_linear_data(skb, imm_data, skb->len);
2219         } else {
2220                 /* first copy data from the skb->data buffer ... */
2221                 skb_copy_from_linear_data(skb, imm_data,
2222                                           skb_headlen(skb));
2223                 imm_data += skb_headlen(skb);
2224
2225                 /* ... then copy data from the fragments */
2226                 for (i = 0; i < nfrags; i++) {
2227                         frag = &skb_shinfo(skb)->frags[i];
2228                         memcpy(imm_data,
2229                                page_address(frag->page) + frag->page_offset,
2230                                frag->size);
2231                         imm_data += frag->size;
2232                 }
2233         }
2234         swqe->immediate_data_length = skb->len;
2235         dev_kfree_skb(skb);
2236 }
2237
2238 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2239 {
2240         struct tcphdr *tcp;
2241         u32 tmp;
2242
2243         if ((skb->protocol == htons(ETH_P_IP)) &&
2244             (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2245                 tcp = (struct tcphdr *)(skb_network_header(skb) +
2246                                         (ip_hdr(skb)->ihl * 4));
2247                 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2248                 tmp += ip_hdr(skb)->daddr % 31;
2249                 return tmp % num_qps;
2250         } else
2251                 return 0;
2252 }
2253
2254 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2255 {
2256         struct ehea_port *port = netdev_priv(dev);
2257         struct ehea_swqe *swqe;
2258         unsigned long flags;
2259         u32 lkey;
2260         int swqe_index;
2261         struct ehea_port_res *pr;
2262
2263         pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2264
2265         if (!spin_trylock(&pr->xmit_lock))
2266                 return NETDEV_TX_BUSY;
2267
2268         if (pr->queue_stopped) {
2269                 spin_unlock(&pr->xmit_lock);
2270                 return NETDEV_TX_BUSY;
2271         }
2272
2273         swqe = ehea_get_swqe(pr->qp, &swqe_index);
2274         memset(swqe, 0, SWQE_HEADER_SIZE);
2275         atomic_dec(&pr->swqe_avail);
2276
2277         if (vlan_tx_tag_present(skb)) {
2278                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2279                 swqe->vlan_tag = vlan_tx_tag_get(skb);
2280         }
2281
2282         pr->tx_packets++;
2283         pr->tx_bytes += skb->len;
2284
2285         if (skb->len <= SWQE3_MAX_IMM) {
2286                 u32 sig_iv = port->sig_comp_iv;
2287                 u32 swqe_num = pr->swqe_id_counter;
2288                 ehea_xmit3(skb, dev, swqe);
2289                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2290                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2291                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2292                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2293                                                       sig_iv);
2294                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2295                         pr->swqe_ll_count = 0;
2296                 } else
2297                         pr->swqe_ll_count += 1;
2298         } else {
2299                 swqe->wr_id =
2300                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2301                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2302                       | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2303                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2304                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2305
2306                 pr->sq_skba.index++;
2307                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2308
2309                 lkey = pr->send_mr.lkey;
2310                 ehea_xmit2(skb, dev, swqe, lkey);
2311                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2312         }
2313         pr->swqe_id_counter += 1;
2314
2315         if (netif_msg_tx_queued(port)) {
2316                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2317                 ehea_dump(swqe, 512, "swqe");
2318         }
2319
2320         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2321                 netif_stop_queue(dev);
2322                 swqe->tx_control |= EHEA_SWQE_PURGE;
2323         }
2324
2325         ehea_post_swqe(pr->qp, swqe);
2326
2327         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2328                 spin_lock_irqsave(&pr->netif_queue, flags);
2329                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2330                         pr->p_stats.queue_stopped++;
2331                         netif_stop_queue(dev);
2332                         pr->queue_stopped = 1;
2333                 }
2334                 spin_unlock_irqrestore(&pr->netif_queue, flags);
2335         }
2336         dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
2337         spin_unlock(&pr->xmit_lock);
2338
2339         return NETDEV_TX_OK;
2340 }
2341
2342 static void ehea_vlan_rx_register(struct net_device *dev,
2343                                   struct vlan_group *grp)
2344 {
2345         struct ehea_port *port = netdev_priv(dev);
2346         struct ehea_adapter *adapter = port->adapter;
2347         struct hcp_ehea_port_cb1 *cb1;
2348         u64 hret;
2349
2350         port->vgrp = grp;
2351
2352         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2353         if (!cb1) {
2354                 ehea_error("no mem for cb1");
2355                 goto out;
2356         }
2357
2358         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2359                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2360         if (hret != H_SUCCESS)
2361                 ehea_error("modify_ehea_port failed");
2362
2363         free_page((unsigned long)cb1);
2364 out:
2365         return;
2366 }
2367
2368 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2369 {
2370         struct ehea_port *port = netdev_priv(dev);
2371         struct ehea_adapter *adapter = port->adapter;
2372         struct hcp_ehea_port_cb1 *cb1;
2373         int index;
2374         u64 hret;
2375
2376         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2377         if (!cb1) {
2378                 ehea_error("no mem for cb1");
2379                 goto out;
2380         }
2381
2382         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2383                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2384         if (hret != H_SUCCESS) {
2385                 ehea_error("query_ehea_port failed");
2386                 goto out;
2387         }
2388
2389         index = (vid / 64);
2390         cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2391
2392         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2393                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2394         if (hret != H_SUCCESS)
2395                 ehea_error("modify_ehea_port failed");
2396 out:
2397         free_page((unsigned long)cb1);
2398         return;
2399 }
2400
2401 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2402 {
2403         struct ehea_port *port = netdev_priv(dev);
2404         struct ehea_adapter *adapter = port->adapter;
2405         struct hcp_ehea_port_cb1 *cb1;
2406         int index;
2407         u64 hret;
2408
2409         vlan_group_set_device(port->vgrp, vid, NULL);
2410
2411         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2412         if (!cb1) {
2413                 ehea_error("no mem for cb1");
2414                 goto out;
2415         }
2416
2417         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2418                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2419         if (hret != H_SUCCESS) {
2420                 ehea_error("query_ehea_port failed");
2421                 goto out;
2422         }
2423
2424         index = (vid / 64);
2425         cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2426
2427         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2428                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2429         if (hret != H_SUCCESS)
2430                 ehea_error("modify_ehea_port failed");
2431 out:
2432         free_page((unsigned long)cb1);
2433 }
2434
2435 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2436 {
2437         int ret = -EIO;
2438         u64 hret;
2439         u16 dummy16 = 0;
2440         u64 dummy64 = 0;
2441         struct hcp_modify_qp_cb0 *cb0;
2442
2443         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2444         if (!cb0) {
2445                 ret = -ENOMEM;
2446                 goto out;
2447         }
2448
2449         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2450                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2451         if (hret != H_SUCCESS) {
2452                 ehea_error("query_ehea_qp failed (1)");
2453                 goto out;
2454         }
2455
2456         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2457         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2458                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2459                                      &dummy64, &dummy64, &dummy16, &dummy16);
2460         if (hret != H_SUCCESS) {
2461                 ehea_error("modify_ehea_qp failed (1)");
2462                 goto out;
2463         }
2464
2465         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2466                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2467         if (hret != H_SUCCESS) {
2468                 ehea_error("query_ehea_qp failed (2)");
2469                 goto out;
2470         }
2471
2472         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2473         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2474                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2475                                      &dummy64, &dummy64, &dummy16, &dummy16);
2476         if (hret != H_SUCCESS) {
2477                 ehea_error("modify_ehea_qp failed (2)");
2478                 goto out;
2479         }
2480
2481         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2482                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2483         if (hret != H_SUCCESS) {
2484                 ehea_error("query_ehea_qp failed (3)");
2485                 goto out;
2486         }
2487
2488         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2489         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2490                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2491                                      &dummy64, &dummy64, &dummy16, &dummy16);
2492         if (hret != H_SUCCESS) {
2493                 ehea_error("modify_ehea_qp failed (3)");
2494                 goto out;
2495         }
2496
2497         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2498                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2499         if (hret != H_SUCCESS) {
2500                 ehea_error("query_ehea_qp failed (4)");
2501                 goto out;
2502         }
2503
2504         ret = 0;
2505 out:
2506         free_page((unsigned long)cb0);
2507         return ret;
2508 }
2509
2510 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2511                                int add_tx_qps)
2512 {
2513         int ret, i;
2514         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2515         enum ehea_eq_type eq_type = EHEA_EQ;
2516
2517         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2518                                    EHEA_MAX_ENTRIES_EQ, 1);
2519         if (!port->qp_eq) {
2520                 ret = -EINVAL;
2521                 ehea_error("ehea_create_eq failed (qp_eq)");
2522                 goto out_kill_eq;
2523         }
2524
2525         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2526         pr_cfg.max_entries_scq = sq_entries * 2;
2527         pr_cfg.max_entries_sq = sq_entries;
2528         pr_cfg.max_entries_rq1 = rq1_entries;
2529         pr_cfg.max_entries_rq2 = rq2_entries;
2530         pr_cfg.max_entries_rq3 = rq3_entries;
2531
2532         pr_cfg_small_rx.max_entries_rcq = 1;
2533         pr_cfg_small_rx.max_entries_scq = sq_entries;
2534         pr_cfg_small_rx.max_entries_sq = sq_entries;
2535         pr_cfg_small_rx.max_entries_rq1 = 1;
2536         pr_cfg_small_rx.max_entries_rq2 = 1;
2537         pr_cfg_small_rx.max_entries_rq3 = 1;
2538
2539         for (i = 0; i < def_qps; i++) {
2540                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2541                 if (ret)
2542                         goto out_clean_pr;
2543         }
2544         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2545                 ret = ehea_init_port_res(port, &port->port_res[i],
2546                                          &pr_cfg_small_rx, i);
2547                 if (ret)
2548                         goto out_clean_pr;
2549         }
2550
2551         return 0;
2552
2553 out_clean_pr:
2554         while (--i >= 0)
2555                 ehea_clean_portres(port, &port->port_res[i]);
2556
2557 out_kill_eq:
2558         ehea_destroy_eq(port->qp_eq);
2559         return ret;
2560 }
2561
2562 static int ehea_clean_all_portres(struct ehea_port *port)
2563 {
2564         int ret = 0;
2565         int i;
2566
2567         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2568                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2569
2570         ret |= ehea_destroy_eq(port->qp_eq);
2571
2572         return ret;
2573 }
2574
2575 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2576 {
2577         if (adapter->active_ports)
2578                 return;
2579
2580         ehea_rem_mr(&adapter->mr);
2581 }
2582
2583 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2584 {
2585         if (adapter->active_ports)
2586                 return 0;
2587
2588         return ehea_reg_kernel_mr(adapter, &adapter->mr);
2589 }
2590
2591 static int ehea_up(struct net_device *dev)
2592 {
2593         int ret, i;
2594         struct ehea_port *port = netdev_priv(dev);
2595
2596         if (port->state == EHEA_PORT_UP)
2597                 return 0;
2598
2599         ret = ehea_port_res_setup(port, port->num_def_qps,
2600                                   port->num_add_tx_qps);
2601         if (ret) {
2602                 ehea_error("port_res_failed");
2603                 goto out;
2604         }
2605
2606         /* Set default QP for this port */
2607         ret = ehea_configure_port(port);
2608         if (ret) {
2609                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2610                 goto out_clean_pr;
2611         }
2612
2613         ret = ehea_reg_interrupts(dev);
2614         if (ret) {
2615                 ehea_error("reg_interrupts failed. ret:%d", ret);
2616                 goto out_clean_pr;
2617         }
2618
2619         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2620                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2621                 if (ret) {
2622                         ehea_error("activate_qp failed");
2623                         goto out_free_irqs;
2624                 }
2625         }
2626
2627         for (i = 0; i < port->num_def_qps; i++) {
2628                 ret = ehea_fill_port_res(&port->port_res[i]);
2629                 if (ret) {
2630                         ehea_error("out_free_irqs");
2631                         goto out_free_irqs;
2632                 }
2633         }
2634
2635         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2636         if (ret) {
2637                 ret = -EIO;
2638                 goto out_free_irqs;
2639         }
2640
2641         port->state = EHEA_PORT_UP;
2642
2643         ret = 0;
2644         goto out;
2645
2646 out_free_irqs:
2647         ehea_free_interrupts(dev);
2648
2649 out_clean_pr:
2650         ehea_clean_all_portres(port);
2651 out:
2652         if (ret)
2653                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2654
2655         ehea_update_bcmc_registrations();
2656         ehea_update_firmware_handles();
2657
2658         return ret;
2659 }
2660
2661 static void port_napi_disable(struct ehea_port *port)
2662 {
2663         int i;
2664
2665         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2666                 napi_disable(&port->port_res[i].napi);
2667 }
2668
2669 static void port_napi_enable(struct ehea_port *port)
2670 {
2671         int i;
2672
2673         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2674                 napi_enable(&port->port_res[i].napi);
2675 }
2676
2677 static int ehea_open(struct net_device *dev)
2678 {
2679         int ret;
2680         struct ehea_port *port = netdev_priv(dev);
2681
2682         mutex_lock(&port->port_lock);
2683
2684         if (netif_msg_ifup(port))
2685                 ehea_info("enabling port %s", dev->name);
2686
2687         ret = ehea_up(dev);
2688         if (!ret) {
2689                 port_napi_enable(port);
2690                 netif_start_queue(dev);
2691         }
2692
2693         init_waitqueue_head(&port->swqe_avail_wq);
2694         init_waitqueue_head(&port->restart_wq);
2695
2696         mutex_unlock(&port->port_lock);
2697
2698         return ret;
2699 }
2700
2701 static int ehea_down(struct net_device *dev)
2702 {
2703         int ret;
2704         struct ehea_port *port = netdev_priv(dev);
2705
2706         if (port->state == EHEA_PORT_DOWN)
2707                 return 0;
2708
2709         ehea_drop_multicast_list(dev);
2710         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2711
2712         ehea_free_interrupts(dev);
2713
2714         port->state = EHEA_PORT_DOWN;
2715
2716         ehea_update_bcmc_registrations();
2717
2718         ret = ehea_clean_all_portres(port);
2719         if (ret)
2720                 ehea_info("Failed freeing resources for %s. ret=%i",
2721                           dev->name, ret);
2722
2723         ehea_update_firmware_handles();
2724
2725         return ret;
2726 }
2727
2728 static int ehea_stop(struct net_device *dev)
2729 {
2730         int ret;
2731         struct ehea_port *port = netdev_priv(dev);
2732
2733         if (netif_msg_ifdown(port))
2734                 ehea_info("disabling port %s", dev->name);
2735
2736         set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2737         cancel_work_sync(&port->reset_task);
2738         mutex_lock(&port->port_lock);
2739         netif_stop_queue(dev);
2740         port_napi_disable(port);
2741         ret = ehea_down(dev);
2742         mutex_unlock(&port->port_lock);
2743         clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2744         return ret;
2745 }
2746
2747 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2748 {
2749         struct ehea_qp qp = *orig_qp;
2750         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2751         struct ehea_swqe *swqe;
2752         int wqe_index;
2753         int i;
2754
2755         for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2756                 swqe = ehea_get_swqe(&qp, &wqe_index);
2757                 swqe->tx_control |= EHEA_SWQE_PURGE;
2758         }
2759 }
2760
2761 static void ehea_flush_sq(struct ehea_port *port)
2762 {
2763         int i;
2764
2765         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2766                 struct ehea_port_res *pr = &port->port_res[i];
2767                 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2768                 int ret;
2769
2770                 ret = wait_event_timeout(port->swqe_avail_wq,
2771                          atomic_read(&pr->swqe_avail) >= swqe_max,
2772                          msecs_to_jiffies(100));
2773
2774                 if (!ret) {
2775                         ehea_error("WARNING: sq not flushed completely");
2776                         break;
2777                 }
2778         }
2779 }
2780
2781 int ehea_stop_qps(struct net_device *dev)
2782 {
2783         struct ehea_port *port = netdev_priv(dev);
2784         struct ehea_adapter *adapter = port->adapter;
2785         struct hcp_modify_qp_cb0 *cb0;
2786         int ret = -EIO;
2787         int dret;
2788         int i;
2789         u64 hret;
2790         u64 dummy64 = 0;
2791         u16 dummy16 = 0;
2792
2793         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2794         if (!cb0) {
2795                 ret = -ENOMEM;
2796                 goto out;
2797         }
2798
2799         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2800                 struct ehea_port_res *pr =  &port->port_res[i];
2801                 struct ehea_qp *qp = pr->qp;
2802
2803                 /* Purge send queue */
2804                 ehea_purge_sq(qp);
2805
2806                 /* Disable queue pair */
2807                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2808                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2809                                             cb0);
2810                 if (hret != H_SUCCESS) {
2811                         ehea_error("query_ehea_qp failed (1)");
2812                         goto out;
2813                 }
2814
2815                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2816                 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2817
2818                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2819                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2820                                                             1), cb0, &dummy64,
2821                                              &dummy64, &dummy16, &dummy16);
2822                 if (hret != H_SUCCESS) {
2823                         ehea_error("modify_ehea_qp failed (1)");
2824                         goto out;
2825                 }
2826
2827                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2828                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2829                                             cb0);
2830                 if (hret != H_SUCCESS) {
2831                         ehea_error("query_ehea_qp failed (2)");
2832                         goto out;
2833                 }
2834
2835                 /* deregister shared memory regions */
2836                 dret = ehea_rem_smrs(pr);
2837                 if (dret) {
2838                         ehea_error("unreg shared memory region failed");
2839                         goto out;
2840                 }
2841         }
2842
2843         ret = 0;
2844 out:
2845         free_page((unsigned long)cb0);
2846
2847         return ret;
2848 }
2849
2850 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2851 {
2852         struct ehea_qp qp = *orig_qp;
2853         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2854         struct ehea_rwqe *rwqe;
2855         struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2856         struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2857         struct sk_buff *skb;
2858         u32 lkey = pr->recv_mr.lkey;
2859
2860
2861         int i;
2862         int index;
2863
2864         for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2865                 rwqe = ehea_get_next_rwqe(&qp, 2);
2866                 rwqe->sg_list[0].l_key = lkey;
2867                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2868                 skb = skba_rq2[index];
2869                 if (skb)
2870                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2871         }
2872
2873         for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2874                 rwqe = ehea_get_next_rwqe(&qp, 3);
2875                 rwqe->sg_list[0].l_key = lkey;
2876                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2877                 skb = skba_rq3[index];
2878                 if (skb)
2879                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2880         }
2881 }
2882
2883 int ehea_restart_qps(struct net_device *dev)
2884 {
2885         struct ehea_port *port = netdev_priv(dev);
2886         struct ehea_adapter *adapter = port->adapter;
2887         int ret = 0;
2888         int i;
2889
2890         struct hcp_modify_qp_cb0 *cb0;
2891         u64 hret;
2892         u64 dummy64 = 0;
2893         u16 dummy16 = 0;
2894
2895         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2896         if (!cb0) {
2897                 ret = -ENOMEM;
2898                 goto out;
2899         }
2900
2901         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2902                 struct ehea_port_res *pr =  &port->port_res[i];
2903                 struct ehea_qp *qp = pr->qp;
2904
2905                 ret = ehea_gen_smrs(pr);
2906                 if (ret) {
2907                         ehea_error("creation of shared memory regions failed");
2908                         goto out;
2909                 }
2910
2911                 ehea_update_rqs(qp, pr);
2912
2913                 /* Enable queue pair */
2914                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2915                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2916                                             cb0);
2917                 if (hret != H_SUCCESS) {
2918                         ehea_error("query_ehea_qp failed (1)");
2919                         goto out;
2920                 }
2921
2922                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2923                 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2924
2925                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2926                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2927                                                             1), cb0, &dummy64,
2928                                              &dummy64, &dummy16, &dummy16);
2929                 if (hret != H_SUCCESS) {
2930                         ehea_error("modify_ehea_qp failed (1)");
2931                         goto out;
2932                 }
2933
2934                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2935                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2936                                             cb0);
2937                 if (hret != H_SUCCESS) {
2938                         ehea_error("query_ehea_qp failed (2)");
2939                         goto out;
2940                 }
2941
2942                 /* refill entire queue */
2943                 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2944                 ehea_refill_rq2(pr, 0);
2945                 ehea_refill_rq3(pr, 0);
2946         }
2947 out:
2948         free_page((unsigned long)cb0);
2949
2950         return ret;
2951 }
2952
2953 static void ehea_reset_port(struct work_struct *work)
2954 {
2955         int ret;
2956         struct ehea_port *port =
2957                 container_of(work, struct ehea_port, reset_task);
2958         struct net_device *dev = port->netdev;
2959
2960         mutex_lock(&dlpar_mem_lock);
2961         port->resets++;
2962         mutex_lock(&port->port_lock);
2963         netif_stop_queue(dev);
2964
2965         port_napi_disable(port);
2966
2967         ehea_down(dev);
2968
2969         ret = ehea_up(dev);
2970         if (ret)
2971                 goto out;
2972
2973         ehea_set_multicast_list(dev);
2974
2975         if (netif_msg_timer(port))
2976                 ehea_info("Device %s resetted successfully", dev->name);
2977
2978         port_napi_enable(port);
2979
2980         netif_wake_queue(dev);
2981 out:
2982         mutex_unlock(&port->port_lock);
2983         mutex_unlock(&dlpar_mem_lock);
2984 }
2985
2986 static void ehea_rereg_mrs(void)
2987 {
2988         int ret, i;
2989         struct ehea_adapter *adapter;
2990
2991         ehea_info("LPAR memory changed - re-initializing driver");
2992
2993         list_for_each_entry(adapter, &adapter_list, list)
2994                 if (adapter->active_ports) {
2995                         /* Shutdown all ports */
2996                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2997                                 struct ehea_port *port = adapter->port[i];
2998                                 struct net_device *dev;
2999
3000                                 if (!port)
3001                                         continue;
3002
3003                                 dev = port->netdev;
3004
3005                                 if (dev->flags & IFF_UP) {
3006                                         mutex_lock(&port->port_lock);
3007                                         netif_stop_queue(dev);
3008                                         ehea_flush_sq(port);
3009                                         ret = ehea_stop_qps(dev);
3010                                         if (ret) {
3011                                                 mutex_unlock(&port->port_lock);
3012                                                 goto out;
3013                                         }
3014                                         port_napi_disable(port);
3015                                         mutex_unlock(&port->port_lock);
3016                                 }
3017                                 reset_sq_restart_flag(port);
3018                         }
3019
3020                         /* Unregister old memory region */
3021                         ret = ehea_rem_mr(&adapter->mr);
3022                         if (ret) {
3023                                 ehea_error("unregister MR failed - driver"
3024                                            " inoperable!");
3025                                 goto out;
3026                         }
3027                 }
3028
3029         clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3030
3031         list_for_each_entry(adapter, &adapter_list, list)
3032                 if (adapter->active_ports) {
3033                         /* Register new memory region */
3034                         ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
3035                         if (ret) {
3036                                 ehea_error("register MR failed - driver"
3037                                            " inoperable!");
3038                                 goto out;
3039                         }
3040
3041                         /* Restart all ports */
3042                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
3043                                 struct ehea_port *port = adapter->port[i];
3044
3045                                 if (port) {
3046                                         struct net_device *dev = port->netdev;
3047
3048                                         if (dev->flags & IFF_UP) {
3049                                                 mutex_lock(&port->port_lock);
3050                                                 port_napi_enable(port);
3051                                                 ret = ehea_restart_qps(dev);
3052                                                 check_sqs(port);
3053                                                 if (!ret)
3054                                                         netif_wake_queue(dev);
3055                                                 mutex_unlock(&port->port_lock);
3056                                         }
3057                                 }
3058                         }
3059                 }
3060         ehea_info("re-initializing driver complete");
3061 out:
3062         return;
3063 }
3064
3065 static void ehea_tx_watchdog(struct net_device *dev)
3066 {
3067         struct ehea_port *port = netdev_priv(dev);
3068
3069         if (netif_carrier_ok(dev) &&
3070             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
3071                 ehea_schedule_port_reset(port);
3072 }
3073
3074 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3075 {
3076         struct hcp_query_ehea *cb;
3077         u64 hret;
3078         int ret;
3079
3080         cb = (void *)get_zeroed_page(GFP_KERNEL);
3081         if (!cb) {
3082                 ret = -ENOMEM;
3083                 goto out;
3084         }
3085
3086         hret = ehea_h_query_ehea(adapter->handle, cb);
3087
3088         if (hret != H_SUCCESS) {
3089                 ret = -EIO;
3090                 goto out_herr;
3091         }
3092
3093         adapter->max_mc_mac = cb->max_mc_mac - 1;
3094         ret = 0;
3095
3096 out_herr:
3097         free_page((unsigned long)cb);
3098 out:
3099         return ret;
3100 }
3101
3102 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
3103 {
3104         struct hcp_ehea_port_cb4 *cb4;
3105         u64 hret;
3106         int ret = 0;
3107
3108         *jumbo = 0;
3109
3110         /* (Try to) enable *jumbo frames */
3111         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
3112         if (!cb4) {
3113                 ehea_error("no mem for cb4");
3114                 ret = -ENOMEM;
3115                 goto out;
3116         } else {
3117                 hret = ehea_h_query_ehea_port(port->adapter->handle,
3118                                               port->logical_port_id,
3119                                               H_PORT_CB4,
3120                                               H_PORT_CB4_JUMBO, cb4);
3121                 if (hret == H_SUCCESS) {
3122                         if (cb4->jumbo_frame)
3123                                 *jumbo = 1;
3124                         else {
3125                                 cb4->jumbo_frame = 1;
3126                                 hret = ehea_h_modify_ehea_port(port->adapter->
3127                                                                handle,
3128                                                                port->
3129                                                                logical_port_id,
3130                                                                H_PORT_CB4,
3131                                                                H_PORT_CB4_JUMBO,
3132                                                                cb4);
3133                                 if (hret == H_SUCCESS)
3134                                         *jumbo = 1;
3135                         }
3136                 } else
3137                         ret = -EINVAL;
3138
3139                 free_page((unsigned long)cb4);
3140         }
3141 out:
3142         return ret;
3143 }
3144
3145 static ssize_t ehea_show_port_id(struct device *dev,
3146                                  struct device_attribute *attr, char *buf)
3147 {
3148         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3149         return sprintf(buf, "%d", port->logical_port_id);
3150 }
3151
3152 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3153                    NULL);
3154
3155 static void __devinit logical_port_release(struct device *dev)
3156 {
3157         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3158         of_node_put(port->ofdev.dev.of_node);
3159 }
3160
3161 static struct device *ehea_register_port(struct ehea_port *port,
3162                                          struct device_node *dn)
3163 {
3164         int ret;
3165
3166         port->ofdev.dev.of_node = of_node_get(dn);
3167         port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3168         port->ofdev.dev.bus = &ibmebus_bus_type;
3169
3170         dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3171         port->ofdev.dev.release = logical_port_release;
3172
3173         ret = of_device_register(&port->ofdev);
3174         if (ret) {
3175                 ehea_error("failed to register device. ret=%d", ret);
3176                 goto out;
3177         }
3178
3179         ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3180         if (ret) {
3181                 ehea_error("failed to register attributes, ret=%d", ret);
3182                 goto out_unreg_of_dev;
3183         }
3184
3185         return &port->ofdev.dev;
3186
3187 out_unreg_of_dev:
3188         of_device_unregister(&port->ofdev);
3189 out:
3190         return NULL;
3191 }
3192
3193 static void ehea_unregister_port(struct ehea_port *port)
3194 {
3195         device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3196         of_device_unregister(&port->ofdev);
3197 }
3198
3199 static const struct net_device_ops ehea_netdev_ops = {
3200         .ndo_open               = ehea_open,
3201         .ndo_stop               = ehea_stop,
3202         .ndo_start_xmit         = ehea_start_xmit,
3203 #ifdef CONFIG_NET_POLL_CONTROLLER
3204         .ndo_poll_controller    = ehea_netpoll,
3205 #endif
3206         .ndo_get_stats          = ehea_get_stats,
3207         .ndo_set_mac_address    = ehea_set_mac_addr,
3208         .ndo_validate_addr      = eth_validate_addr,
3209         .ndo_set_multicast_list = ehea_set_multicast_list,
3210         .ndo_change_mtu         = ehea_change_mtu,
3211         .ndo_vlan_rx_register   = ehea_vlan_rx_register,
3212         .ndo_vlan_rx_add_vid    = ehea_vlan_rx_add_vid,
3213         .ndo_vlan_rx_kill_vid   = ehea_vlan_rx_kill_vid,
3214         .ndo_tx_timeout         = ehea_tx_watchdog,
3215 };
3216
3217 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3218                                          u32 logical_port_id,
3219                                          struct device_node *dn)
3220 {
3221         int ret;
3222         struct net_device *dev;
3223         struct ehea_port *port;
3224         struct device *port_dev;
3225         int jumbo;
3226
3227         /* allocate memory for the port structures */
3228         dev = alloc_etherdev(sizeof(struct ehea_port));
3229
3230         if (!dev) {
3231                 ehea_error("no mem for net_device");
3232                 ret = -ENOMEM;
3233                 goto out_err;
3234         }
3235
3236         port = netdev_priv(dev);
3237
3238         mutex_init(&port->port_lock);
3239         port->state = EHEA_PORT_DOWN;
3240         port->sig_comp_iv = sq_entries / 10;
3241
3242         port->adapter = adapter;
3243         port->netdev = dev;
3244         port->logical_port_id = logical_port_id;
3245
3246         port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3247
3248         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3249         if (!port->mc_list) {
3250                 ret = -ENOMEM;
3251                 goto out_free_ethdev;
3252         }
3253
3254         INIT_LIST_HEAD(&port->mc_list->list);
3255
3256         ret = ehea_sense_port_attr(port);
3257         if (ret)
3258                 goto out_free_mc_list;
3259
3260         port_dev = ehea_register_port(port, dn);
3261         if (!port_dev)
3262                 goto out_free_mc_list;
3263
3264         SET_NETDEV_DEV(dev, port_dev);
3265
3266         /* initialize net_device structure */
3267         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3268
3269         dev->netdev_ops = &ehea_netdev_ops;
3270         ehea_set_ethtool_ops(dev);
3271
3272         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3273                       | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3274                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3275                       | NETIF_F_LLTX;
3276         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3277
3278         if (use_lro)
3279                 dev->features |= NETIF_F_LRO;
3280
3281         INIT_WORK(&port->reset_task, ehea_reset_port);
3282
3283         ret = register_netdev(dev);
3284         if (ret) {
3285                 ehea_error("register_netdev failed. ret=%d", ret);
3286                 goto out_unreg_port;
3287         }
3288
3289         port->lro_max_aggr = lro_max_aggr;
3290
3291         ret = ehea_get_jumboframe_status(port, &jumbo);
3292         if (ret)
3293                 ehea_error("failed determining jumbo frame status for %s",
3294                            port->netdev->name);
3295
3296         ehea_info("%s: Jumbo frames are %sabled", dev->name,
3297                   jumbo == 1 ? "en" : "dis");
3298
3299         adapter->active_ports++;
3300
3301         return port;
3302
3303 out_unreg_port:
3304         ehea_unregister_port(port);
3305
3306 out_free_mc_list:
3307         kfree(port->mc_list);
3308
3309 out_free_ethdev:
3310         free_netdev(dev);
3311
3312 out_err:
3313         ehea_error("setting up logical port with id=%d failed, ret=%d",
3314                    logical_port_id, ret);
3315         return NULL;
3316 }
3317
3318 static void ehea_shutdown_single_port(struct ehea_port *port)
3319 {
3320         struct ehea_adapter *adapter = port->adapter;
3321
3322         cancel_work_sync(&port->reset_task);
3323         unregister_netdev(port->netdev);
3324         ehea_unregister_port(port);
3325         kfree(port->mc_list);
3326         free_netdev(port->netdev);
3327         adapter->active_ports--;
3328 }
3329
3330 static int ehea_setup_ports(struct ehea_adapter *adapter)
3331 {
3332         struct device_node *lhea_dn;
3333         struct device_node *eth_dn = NULL;
3334
3335         const u32 *dn_log_port_id;
3336         int i = 0;
3337
3338         lhea_dn = adapter->ofdev->dev.of_node;
3339         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3340
3341                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3342                                                  NULL);
3343                 if (!dn_log_port_id) {
3344                         ehea_error("bad device node: eth_dn name=%s",
3345                                    eth_dn->full_name);
3346                         continue;
3347                 }
3348
3349                 if (ehea_add_adapter_mr(adapter)) {
3350                         ehea_error("creating MR failed");
3351                         of_node_put(eth_dn);
3352                         return -EIO;
3353                 }
3354
3355                 adapter->port[i] = ehea_setup_single_port(adapter,
3356                                                           *dn_log_port_id,
3357                                                           eth_dn);
3358                 if (adapter->port[i])
3359                         ehea_info("%s -> logical port id #%d",
3360                                   adapter->port[i]->netdev->name,
3361                                   *dn_log_port_id);
3362                 else
3363                         ehea_remove_adapter_mr(adapter);
3364
3365                 i++;
3366         }
3367         return 0;
3368 }
3369
3370 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3371                                            u32 logical_port_id)
3372 {
3373         struct device_node *lhea_dn;
3374         struct device_node *eth_dn = NULL;
3375         const u32 *dn_log_port_id;
3376
3377         lhea_dn = adapter->ofdev->dev.of_node;
3378         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3379
3380                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3381                                                  NULL);
3382                 if (dn_log_port_id)
3383                         if (*dn_log_port_id == logical_port_id)
3384                                 return eth_dn;
3385         }
3386
3387         return NULL;
3388 }
3389
3390 static ssize_t ehea_probe_port(struct device *dev,
3391                                struct device_attribute *attr,
3392                                const char *buf, size_t count)
3393 {
3394         struct ehea_adapter *adapter = dev_get_drvdata(dev);
3395         struct ehea_port *port;
3396         struct device_node *eth_dn = NULL;
3397         int i;
3398
3399         u32 logical_port_id;
3400
3401         sscanf(buf, "%d", &logical_port_id);
3402
3403         port = ehea_get_port(adapter, logical_port_id);
3404
3405         if (port) {
3406                 ehea_info("adding port with logical port id=%d failed. port "
3407                           "already configured as %s.", logical_port_id,
3408                           port->netdev->name);
3409                 return -EINVAL;
3410         }
3411
3412         eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3413
3414         if (!eth_dn) {
3415                 ehea_info("no logical port with id %d found", logical_port_id);
3416                 return -EINVAL;
3417         }
3418
3419         if (ehea_add_adapter_mr(adapter)) {
3420                 ehea_error("creating MR failed");
3421                 return -EIO;
3422         }
3423
3424         port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3425
3426         of_node_put(eth_dn);
3427
3428         if (port) {
3429                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3430                         if (!adapter->port[i]) {
3431                                 adapter->port[i] = port;
3432                                 break;
3433                         }
3434
3435                 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3436                           logical_port_id);
3437         } else {
3438                 ehea_remove_adapter_mr(adapter);
3439                 return -EIO;
3440         }
3441
3442         return (ssize_t) count;
3443 }
3444
3445 static ssize_t ehea_remove_port(struct device *dev,
3446                                 struct device_attribute *attr,
3447                                 const char *buf, size_t count)
3448 {
3449         struct ehea_adapter *adapter = dev_get_drvdata(dev);
3450         struct ehea_port *port;
3451         int i;
3452         u32 logical_port_id;
3453
3454         sscanf(buf, "%d", &logical_port_id);
3455
3456         port = ehea_get_port(adapter, logical_port_id);
3457
3458         if (port) {
3459                 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3460                           logical_port_id);
3461
3462                 ehea_shutdown_single_port(port);
3463
3464                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3465                         if (adapter->port[i] == port) {
3466                                 adapter->port[i] = NULL;
3467                                 break;
3468                         }
3469         } else {
3470                 ehea_error("removing port with logical port id=%d failed. port "
3471                            "not configured.", logical_port_id);
3472                 return -EINVAL;
3473         }
3474
3475         ehea_remove_adapter_mr(adapter);
3476
3477         return (ssize_t) count;
3478 }
3479
3480 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3481 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3482
3483 int ehea_create_device_sysfs(struct platform_device *dev)
3484 {
3485         int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3486         if (ret)
3487                 goto out;
3488
3489         ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3490 out:
3491         return ret;
3492 }
3493
3494 void ehea_remove_device_sysfs(struct platform_device *dev)
3495 {
3496         device_remove_file(&dev->dev, &dev_attr_probe_port);
3497         device_remove_file(&dev->dev, &dev_attr_remove_port);
3498 }
3499
3500 static int __devinit ehea_probe_adapter(struct platform_device *dev,
3501                                         const struct of_device_id *id)
3502 {
3503         struct ehea_adapter *adapter;
3504         const u64 *adapter_handle;
3505         int ret;
3506
3507         if (!dev || !dev->dev.of_node) {
3508                 ehea_error("Invalid ibmebus device probed");
3509                 return -EINVAL;
3510         }
3511
3512         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3513         if (!adapter) {
3514                 ret = -ENOMEM;
3515                 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3516                 goto out;
3517         }
3518
3519         list_add(&adapter->list, &adapter_list);
3520
3521         adapter->ofdev = dev;
3522
3523         adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3524                                          NULL);
3525         if (adapter_handle)
3526                 adapter->handle = *adapter_handle;
3527
3528         if (!adapter->handle) {
3529                 dev_err(&dev->dev, "failed getting handle for adapter"
3530                         " '%s'\n", dev->dev.of_node->full_name);
3531                 ret = -ENODEV;
3532                 goto out_free_ad;
3533         }
3534
3535         adapter->pd = EHEA_PD_ID;
3536
3537         dev_set_drvdata(&dev->dev, adapter);
3538
3539
3540         /* initialize adapter and ports */
3541         /* get adapter properties */
3542         ret = ehea_sense_adapter_attr(adapter);
3543         if (ret) {
3544                 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3545                 goto out_free_ad;
3546         }
3547
3548         adapter->neq = ehea_create_eq(adapter,
3549                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3550         if (!adapter->neq) {
3551                 ret = -EIO;
3552                 dev_err(&dev->dev, "NEQ creation failed\n");
3553                 goto out_free_ad;
3554         }
3555
3556         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3557                      (unsigned long)adapter);
3558
3559         ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3560                                   ehea_interrupt_neq, IRQF_DISABLED,
3561                                   "ehea_neq", adapter);
3562         if (ret) {
3563                 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3564                 goto out_kill_eq;
3565         }
3566
3567         ret = ehea_create_device_sysfs(dev);
3568         if (ret)
3569                 goto out_free_irq;
3570
3571         ret = ehea_setup_ports(adapter);
3572         if (ret) {
3573                 dev_err(&dev->dev, "setup_ports failed\n");
3574                 goto out_rem_dev_sysfs;
3575         }
3576
3577         ret = 0;
3578         goto out;
3579
3580 out_rem_dev_sysfs:
3581         ehea_remove_device_sysfs(dev);
3582
3583 out_free_irq:
3584         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3585
3586 out_kill_eq:
3587         ehea_destroy_eq(adapter->neq);
3588
3589 out_free_ad:
3590         list_del(&adapter->list);
3591         kfree(adapter);
3592
3593 out:
3594         ehea_update_firmware_handles();
3595
3596         return ret;
3597 }
3598
3599 static int __devexit ehea_remove(struct platform_device *dev)
3600 {
3601         struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3602         int i;
3603
3604         for (i = 0; i < EHEA_MAX_PORTS; i++)
3605                 if (adapter->port[i]) {
3606                         ehea_shutdown_single_port(adapter->port[i]);
3607                         adapter->port[i] = NULL;
3608                 }
3609
3610         ehea_remove_device_sysfs(dev);
3611
3612         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3613         tasklet_kill(&adapter->neq_tasklet);
3614
3615         ehea_destroy_eq(adapter->neq);
3616         ehea_remove_adapter_mr(adapter);
3617         list_del(&adapter->list);
3618         kfree(adapter);
3619
3620         ehea_update_firmware_handles();
3621
3622         return 0;
3623 }
3624
3625 void ehea_crash_handler(void)
3626 {
3627         int i;
3628
3629         if (ehea_fw_handles.arr)
3630                 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3631                         ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3632                                              ehea_fw_handles.arr[i].fwh,
3633                                              FORCE_FREE);
3634
3635         if (ehea_bcmc_regs.arr)
3636                 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3637                         ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3638                                               ehea_bcmc_regs.arr[i].port_id,
3639                                               ehea_bcmc_regs.arr[i].reg_type,
3640                                               ehea_bcmc_regs.arr[i].macaddr,
3641                                               0, H_DEREG_BCMC);
3642 }
3643
3644 static int ehea_mem_notifier(struct notifier_block *nb,
3645                              unsigned long action, void *data)
3646 {
3647         int ret = NOTIFY_BAD;
3648         struct memory_notify *arg = data;
3649
3650         mutex_lock(&dlpar_mem_lock);
3651
3652         switch (action) {
3653         case MEM_CANCEL_OFFLINE:
3654                 ehea_info("memory offlining canceled");
3655                 /* Readd canceled memory block */
3656         case MEM_ONLINE:
3657                 ehea_info("memory is going online");
3658                 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3659                 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3660                         goto out_unlock;
3661                 ehea_rereg_mrs();
3662                 break;
3663         case MEM_GOING_OFFLINE:
3664                 ehea_info("memory is going offline");
3665                 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3666                 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3667                         goto out_unlock;
3668                 ehea_rereg_mrs();
3669                 break;
3670         default:
3671                 break;
3672         }
3673
3674         ehea_update_firmware_handles();
3675         ret = NOTIFY_OK;
3676
3677 out_unlock:
3678         mutex_unlock(&dlpar_mem_lock);
3679         return ret;
3680 }
3681
3682 static struct notifier_block ehea_mem_nb = {
3683         .notifier_call = ehea_mem_notifier,
3684 };
3685
3686 static int ehea_reboot_notifier(struct notifier_block *nb,
3687                                 unsigned long action, void *unused)
3688 {
3689         if (action == SYS_RESTART) {
3690                 ehea_info("Reboot: freeing all eHEA resources");
3691                 ibmebus_unregister_driver(&ehea_driver);
3692         }
3693         return NOTIFY_DONE;
3694 }
3695
3696 static struct notifier_block ehea_reboot_nb = {
3697         .notifier_call = ehea_reboot_notifier,
3698 };
3699
3700 static int check_module_parm(void)
3701 {
3702         int ret = 0;
3703
3704         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3705             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3706                 ehea_info("Bad parameter: rq1_entries");
3707                 ret = -EINVAL;
3708         }
3709         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3710             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3711                 ehea_info("Bad parameter: rq2_entries");
3712                 ret = -EINVAL;
3713         }
3714         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3715             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3716                 ehea_info("Bad parameter: rq3_entries");
3717                 ret = -EINVAL;
3718         }
3719         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3720             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3721                 ehea_info("Bad parameter: sq_entries");
3722                 ret = -EINVAL;
3723         }
3724
3725         return ret;
3726 }
3727
3728 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3729                                       char *buf)
3730 {
3731         return sprintf(buf, "%d", EHEA_CAPABILITIES);
3732 }
3733
3734 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3735                    ehea_show_capabilities, NULL);
3736
3737 int __init ehea_module_init(void)
3738 {
3739         int ret;
3740
3741         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3742                DRV_VERSION);
3743
3744         memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3745         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3746
3747         mutex_init(&ehea_fw_handles.lock);
3748         spin_lock_init(&ehea_bcmc_regs.lock);
3749
3750         ret = check_module_parm();
3751         if (ret)
3752                 goto out;
3753
3754         ret = ehea_create_busmap();
3755         if (ret)
3756                 goto out;
3757
3758         ret = register_reboot_notifier(&ehea_reboot_nb);
3759         if (ret)
3760                 ehea_info("failed registering reboot notifier");
3761
3762         ret = register_memory_notifier(&ehea_mem_nb);
3763         if (ret)
3764                 ehea_info("failed registering memory remove notifier");
3765
3766         ret = crash_shutdown_register(ehea_crash_handler);
3767         if (ret)
3768                 ehea_info("failed registering crash handler");
3769
3770         ret = ibmebus_register_driver(&ehea_driver);
3771         if (ret) {
3772                 ehea_error("failed registering eHEA device driver on ebus");
3773                 goto out2;
3774         }
3775
3776         ret = driver_create_file(&ehea_driver.driver,
3777                                  &driver_attr_capabilities);
3778         if (ret) {
3779                 ehea_error("failed to register capabilities attribute, ret=%d",
3780                            ret);
3781                 goto out3;
3782         }
3783
3784         return ret;
3785
3786 out3:
3787         ibmebus_unregister_driver(&ehea_driver);
3788 out2:
3789         unregister_memory_notifier(&ehea_mem_nb);
3790         unregister_reboot_notifier(&ehea_reboot_nb);
3791         crash_shutdown_unregister(ehea_crash_handler);
3792 out:
3793         return ret;
3794 }
3795
3796 static void __exit ehea_module_exit(void)
3797 {
3798         int ret;
3799
3800         driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3801         ibmebus_unregister_driver(&ehea_driver);
3802         unregister_reboot_notifier(&ehea_reboot_nb);
3803         ret = crash_shutdown_unregister(ehea_crash_handler);
3804         if (ret)
3805                 ehea_info("failed unregistering crash handler");
3806         unregister_memory_notifier(&ehea_mem_nb);
3807         kfree(ehea_fw_handles.arr);
3808         kfree(ehea_bcmc_regs.arr);
3809         ehea_destroy_busmap();
3810 }
3811
3812 module_init(ehea_module_init);
3813 module_exit(ehea_module_exit);