drivers/net/ehea/ehea_main.c

   1 /*
   2  *  linux/drivers/net/ehea/ehea_main.c
   3  *
   4  *  eHEA ethernet device driver for IBM eServer System p
   5  *
   6  *  (C) Copyright IBM Corp. 2006
   7  *
   8  *  Authors:
   9  *       Christoph Raisch <raisch@de.ibm.com>
  10  *       Jan-Bernd Themann <themann@de.ibm.com>
  11  *       Thomas Klein <tklein@de.ibm.com>
  12  *
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2, or (at your option)
  17  * any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/in.h>
  30 #include <linux/ip.h>
  31 #include <linux/tcp.h>
  32 #include <linux/udp.h>
  33 #include <linux/if.h>
  34 #include <linux/list.h>
  35 #include <linux/if_ether.h>
  36 #include <linux/notifier.h>
  37 #include <linux/reboot.h>
  38 #include <asm/kexec.h>
  39
  40 #include <net/ip.h>
  41
  42 #include "ehea.h"
  43 #include "ehea_qmr.h"
  44 #include "ehea_phyp.h"
  45
  46
  47 MODULE_LICENSE("GPL");
  48 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
  49 MODULE_DESCRIPTION("IBM eServer HEA Driver");
  50 MODULE_VERSION(DRV_VERSION);
  51
  52
  53 static int msg_level = -1;
  54 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
  55 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
  56 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
  57 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
  58 static int use_mcs;
  59 static int use_lro;
  60 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
  61 static int num_tx_qps = EHEA_NUM_TX_QP;
  62 static int prop_carrier_state;
  63
  64 module_param(msg_level, int, 0);
  65 module_param(rq1_entries, int, 0);
  66 module_param(rq2_entries, int, 0);
  67 module_param(rq3_entries, int, 0);
  68 module_param(sq_entries, int, 0);
  69 module_param(prop_carrier_state, int, 0);
  70 module_param(use_mcs, int, 0);
  71 module_param(use_lro, int, 0);
  72 module_param(lro_max_aggr, int, 0);
  73 module_param(num_tx_qps, int, 0);
  74
  75 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
  76 MODULE_PARM_DESC(msg_level, "msg_level");
  77 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
  78                  "port to stack. 1:yes, 0:no.  Default = 0 ");
  79 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
  80                  "[2^x - 1], x = [6..14]. Default = "
  81                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
  82 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
  83                  "[2^x - 1], x = [6..14]. Default = "
  84                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
  85 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
  86                  "[2^x - 1], x = [6..14]. Default = "
  87                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
  88 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue  "
  89                  "[2^x - 1], x = [6..14]. Default = "
  90                  __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
  91 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
  92
  93 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
  94                  __MODULE_STRING(EHEA_LRO_MAX_AGGR));
  95 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
  96                  "Default = 0");
  97
  98 static int port_name_cnt;
  99 static LIST_HEAD(adapter_list);
 100 u64 ehea_driver_flags;
 101 struct work_struct ehea_rereg_mr_task;
 102 struct semaphore dlpar_mem_lock;
 103 struct ehea_fw_handle_array ehea_fw_handles;
 104 struct ehea_bcmc_reg_array ehea_bcmc_regs;
 105
 106
 107 static int __devinit ehea_probe_adapter(struct of_device *dev,
 108                                         const struct of_device_id *id);
 109
 110 static int __devexit ehea_remove(struct of_device *dev);
 111
 112 static struct of_device_id ehea_device_table[] = {
 113         {
 114                 .name = "lhea",
 115                 .compatible = "IBM,lhea",
 116         },
 117         {},
 118 };
 119
 120 static struct of_platform_driver ehea_driver = {
 121         .name = "ehea",
 122         .match_table = ehea_device_table,
 123         .probe = ehea_probe_adapter,
 124         .remove = ehea_remove,
 125 };
 126
 127 void ehea_dump(void *adr, int len, char *msg)
 128 {
 129         int x;
 130         unsigned char *deb = adr;
 131         for (x = 0; x < len; x += 16) {
 132                 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
 133                           deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
 134                 deb += 16;
 135         }
 136 }
 137
 138 static void ehea_update_firmware_handles(void)
 139 {
 140         struct ehea_fw_handle_entry *arr = NULL;
 141         struct ehea_adapter *adapter;
 142         int num_adapters = 0;
 143         int num_ports = 0;
 144         int num_portres = 0;
 145         int i = 0;
 146         int num_fw_handles, k, l;
 147
 148         /* Determine number of handles */
 149         list_for_each_entry(adapter, &adapter_list, list) {
 150                 num_adapters++;
 151
 152                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 153                         struct ehea_port *port = adapter->port[k];
 154
 155                         if (!port || (port->state != EHEA_PORT_UP))
 156                                 continue;
 157
 158                         num_ports++;
 159                         num_portres += port->num_def_qps + port->num_add_tx_qps;
 160                 }
 161         }
 162
 163         num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
 164                          num_ports * EHEA_NUM_PORT_FW_HANDLES +
 165                          num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
 166
 167         if (num_fw_handles) {
 168                 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
 169                 if (!arr)
 170                         return;  /* Keep the existing array */
 171         } else
 172                 goto out_update;
 173
 174         list_for_each_entry(adapter, &adapter_list, list) {
 175                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 176                         struct ehea_port *port = adapter->port[k];
 177
 178                         if (!port || (port->state != EHEA_PORT_UP))
 179                                 continue;
 180
 181                         for (l = 0;
 182                              l < port->num_def_qps + port->num_add_tx_qps;
 183                              l++) {
 184                                 struct ehea_port_res *pr = &port->port_res[l];
 185
 186                                 arr[i].adh = adapter->handle;
 187                                 arr[i++].fwh = pr->qp->fw_handle;
 188                                 arr[i].adh = adapter->handle;
 189                                 arr[i++].fwh = pr->send_cq->fw_handle;
 190                                 arr[i].adh = adapter->handle;
 191                                 arr[i++].fwh = pr->recv_cq->fw_handle;
 192                                 arr[i].adh = adapter->handle;
 193                                 arr[i++].fwh = pr->eq->fw_handle;
 194                                 arr[i].adh = adapter->handle;
 195                                 arr[i++].fwh = pr->send_mr.handle;
 196                                 arr[i].adh = adapter->handle;
 197                                 arr[i++].fwh = pr->recv_mr.handle;
 198                         }
 199                         arr[i].adh = adapter->handle;
 200                         arr[i++].fwh = port->qp_eq->fw_handle;
 201                 }
 202
 203                 arr[i].adh = adapter->handle;
 204                 arr[i++].fwh = adapter->neq->fw_handle;
 205
 206                 if (adapter->mr.handle) {
 207                         arr[i].adh = adapter->handle;
 208                         arr[i++].fwh = adapter->mr.handle;
 209                 }
 210         }
 211
 212 out_update:
 213         kfree(ehea_fw_handles.arr);
 214         ehea_fw_handles.arr = arr;
 215         ehea_fw_handles.num_entries = i;
 216 }
 217
 218 static void ehea_update_bcmc_registrations(void)
 219 {
 220         struct ehea_bcmc_reg_entry *arr = NULL;
 221         struct ehea_adapter *adapter;
 222         struct ehea_mc_list *mc_entry;
 223         int num_registrations = 0;
 224         int i = 0;
 225         int k;
 226
 227         /* Determine number of registrations */
 228         list_for_each_entry(adapter, &adapter_list, list)
 229                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 230                         struct ehea_port *port = adapter->port[k];
 231
 232                         if (!port || (port->state != EHEA_PORT_UP))
 233                                 continue;
 234
 235                         num_registrations += 2; /* Broadcast registrations */
 236
 237                         list_for_each_entry(mc_entry, &port->mc_list->list,list)
 238                                 num_registrations += 2;
 239                 }
 240
 241         if (num_registrations) {
 242                 arr = kzalloc(num_registrations * sizeof(*arr), GFP_KERNEL);
 243                 if (!arr)
 244                         return;  /* Keep the existing array */
 245         } else
 246                 goto out_update;
 247
 248         list_for_each_entry(adapter, &adapter_list, list) {
 249                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 250                         struct ehea_port *port = adapter->port[k];
 251
 252                         if (!port || (port->state != EHEA_PORT_UP))
 253                                 continue;
 254
 255                         arr[i].adh = adapter->handle;
 256                         arr[i].port_id = port->logical_port_id;
 257                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 258                                           EHEA_BCMC_UNTAGGED;
 259                         arr[i++].macaddr = port->mac_addr;
 260
 261                         arr[i].adh = adapter->handle;
 262                         arr[i].port_id = port->logical_port_id;
 263                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 264                                           EHEA_BCMC_VLANID_ALL;
 265                         arr[i++].macaddr = port->mac_addr;
 266
 267                         list_for_each_entry(mc_entry,
 268                                             &port->mc_list->list, list) {
 269                                 arr[i].adh = adapter->handle;
 270                                 arr[i].port_id = port->logical_port_id;
 271                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 272                                                   EHEA_BCMC_MULTICAST |
 273                                                   EHEA_BCMC_UNTAGGED;
 274                                 arr[i++].macaddr = mc_entry->macaddr;
 275
 276                                 arr[i].adh = adapter->handle;
 277                                 arr[i].port_id = port->logical_port_id;
 278                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 279                                                   EHEA_BCMC_MULTICAST |
 280                                                   EHEA_BCMC_VLANID_ALL;
 281                                 arr[i++].macaddr = mc_entry->macaddr;
 282                         }
 283                 }
 284         }
 285
 286 out_update:
 287         kfree(ehea_bcmc_regs.arr);
 288         ehea_bcmc_regs.arr = arr;
 289         ehea_bcmc_regs.num_entries = i;
 290 }
 291
 292 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
 293 {
 294         struct ehea_port *port = netdev_priv(dev);
 295         struct net_device_stats *stats = &port->stats;
 296         struct hcp_ehea_port_cb2 *cb2;
 297         u64 hret, rx_packets, tx_packets;
 298         int i;
 299
 300         memset(stats, 0, sizeof(*stats));
 301
 302         cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
 303         if (!cb2) {
 304                 ehea_error("no mem for cb2");
 305                 goto out;
 306         }
 307
 308         hret = ehea_h_query_ehea_port(port->adapter->handle,
 309                                       port->logical_port_id,
 310                                       H_PORT_CB2, H_PORT_CB2_ALL, cb2);
 311         if (hret != H_SUCCESS) {
 312                 ehea_error("query_ehea_port failed");
 313                 goto out_herr;
 314         }
 315
 316         if (netif_msg_hw(port))
 317                 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
 318
 319         rx_packets = 0;
 320         for (i = 0; i < port->num_def_qps; i++)
 321                 rx_packets += port->port_res[i].rx_packets;
 322
 323         tx_packets = 0;
 324         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
 325                 tx_packets += port->port_res[i].tx_packets;
 326
 327         stats->tx_packets = tx_packets;
 328         stats->multicast = cb2->rxmcp;
 329         stats->rx_errors = cb2->rxuerr;
 330         stats->rx_bytes = cb2->rxo;
 331         stats->tx_bytes = cb2->txo;
 332         stats->rx_packets = rx_packets;
 333
 334 out_herr:
 335         kfree(cb2);
 336 out:
 337         return stats;
 338 }
 339
 340 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 341 {
 342         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 343         struct net_device *dev = pr->port->netdev;
 344         int max_index_mask = pr->rq1_skba.len - 1;
 345         int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
 346         int adder = 0;
 347         int i;
 348
 349         pr->rq1_skba.os_skbs = 0;
 350
 351         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 352                 pr->rq1_skba.index = index;
 353                 pr->rq1_skba.os_skbs = fill_wqes;
 354                 return;
 355         }
 356
 357         for (i = 0; i < fill_wqes; i++) {
 358                 if (!skb_arr_rq1[index]) {
 359                         skb_arr_rq1[index] = netdev_alloc_skb(dev,
 360                                                               EHEA_L_PKT_SIZE);
 361                         if (!skb_arr_rq1[index]) {
 362                                 pr->rq1_skba.os_skbs = fill_wqes - i;
 363                                 ehea_error("%s: no mem for skb/%d wqes filled",
 364                                            dev->name, i);
 365                                 break;
 366                         }
 367                 }
 368                 index--;
 369                 index &= max_index_mask;
 370                 adder++;
 371         }
 372
 373         if (adder == 0)
 374                 return;
 375
 376         /* Ring doorbell */
 377         ehea_update_rq1a(pr->qp, adder);
 378 }
 379
 380 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 381 {
 382         int ret = 0;
 383         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 384         struct net_device *dev = pr->port->netdev;
 385         int i;
 386
 387         for (i = 0; i < pr->rq1_skba.len; i++) {
 388                 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
 389                 if (!skb_arr_rq1[i]) {
 390                         ehea_error("%s: no mem for skb/%d wqes filled",
 391                                    dev->name, i);
 392                         ret = -ENOMEM;
 393                         goto out;
 394                 }
 395         }
 396         /* Ring doorbell */
 397         ehea_update_rq1a(pr->qp, nr_rq1a);
 398 out:
 399         return ret;
 400 }
 401
 402 static int ehea_refill_rq_def(struct ehea_port_res *pr,
 403                               struct ehea_q_skb_arr *q_skba, int rq_nr,
 404                               int num_wqes, int wqe_type, int packet_size)
 405 {
 406         struct net_device *dev = pr->port->netdev;
 407         struct ehea_qp *qp = pr->qp;
 408         struct sk_buff **skb_arr = q_skba->arr;
 409         struct ehea_rwqe *rwqe;
 410         int i, index, max_index_mask, fill_wqes;
 411         int adder = 0;
 412         int ret = 0;
 413
 414         fill_wqes = q_skba->os_skbs + num_wqes;
 415         q_skba->os_skbs = 0;
 416
 417         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 418                 q_skba->os_skbs = fill_wqes;
 419                 return ret;
 420         }
 421
 422         index = q_skba->index;
 423         max_index_mask = q_skba->len - 1;
 424         for (i = 0; i < fill_wqes; i++) {
 425                 u64 tmp_addr;
 426                 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
 427                 if (!skb) {
 428                         ehea_error("%s: no mem for skb/%d wqes filled",
 429                                    pr->port->netdev->name, i);
 430                         q_skba->os_skbs = fill_wqes - i;
 431                         ret = -ENOMEM;
 432                         break;
 433                 }
 434                 skb_reserve(skb, NET_IP_ALIGN);
 435
 436                 skb_arr[index] = skb;
 437                 tmp_addr = ehea_map_vaddr(skb->data);
 438                 if (tmp_addr == -1) {
 439                         dev_kfree_skb(skb);
 440                         q_skba->os_skbs = fill_wqes - i;
 441                         ret = 0;
 442                         break;
 443                 }
 444
 445                 rwqe = ehea_get_next_rwqe(qp, rq_nr);
 446                 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
 447                             | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
 448                 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
 449                 rwqe->sg_list[0].vaddr = tmp_addr;
 450                 rwqe->sg_list[0].len = packet_size;
 451                 rwqe->data_segments = 1;
 452
 453                 index++;
 454                 index &= max_index_mask;
 455                 adder++;
 456         }
 457
 458         q_skba->index = index;
 459         if (adder == 0)
 460                 goto out;
 461
 462         /* Ring doorbell */
 463         iosync();
 464         if (rq_nr == 2)
 465                 ehea_update_rq2a(pr->qp, adder);
 466         else
 467                 ehea_update_rq3a(pr->qp, adder);
 468 out:
 469         return ret;
 470 }
 471
 472
 473 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
 474 {
 475         return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
 476                                   nr_of_wqes, EHEA_RWQE2_TYPE,
 477                                   EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
 478 }
 479
 480
 481 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
 482 {
 483         return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
 484                                   nr_of_wqes, EHEA_RWQE3_TYPE,
 485                                   EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
 486 }
 487
 488 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
 489 {
 490         *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
 491         if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
 492                 return 0;
 493         if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
 494             (cqe->header_length == 0))
 495                 return 0;
 496         return -EINVAL;
 497 }
 498
 499 static inline void ehea_fill_skb(struct net_device *dev,
 500                                  struct sk_buff *skb, struct ehea_cqe *cqe)
 501 {
 502         int length = cqe->num_bytes_transfered - 4;     /*remove CRC */
 503
 504         skb_put(skb, length);
 505         skb->ip_summed = CHECKSUM_UNNECESSARY;
 506         skb->protocol = eth_type_trans(skb, dev);
 507 }
 508
 509 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
 510                                                int arr_len,
 511                                                struct ehea_cqe *cqe)
 512 {
 513         int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 514         struct sk_buff *skb;
 515         void *pref;
 516         int x;
 517
 518         x = skb_index + 1;
 519         x &= (arr_len - 1);
 520
 521         pref = skb_array[x];
 522         prefetchw(pref);
 523         prefetchw(pref + EHEA_CACHE_LINE);
 524
 525         pref = (skb_array[x]->data);
 526         prefetch(pref);
 527         prefetch(pref + EHEA_CACHE_LINE);
 528         prefetch(pref + EHEA_CACHE_LINE * 2);
 529         prefetch(pref + EHEA_CACHE_LINE * 3);
 530         skb = skb_array[skb_index];
 531         skb_array[skb_index] = NULL;
 532         return skb;
 533 }
 534
 535 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
 536                                                   int arr_len, int wqe_index)
 537 {
 538         struct sk_buff *skb;
 539         void *pref;
 540         int x;
 541
 542         x = wqe_index + 1;
 543         x &= (arr_len - 1);
 544
 545         pref = skb_array[x];
 546         prefetchw(pref);
 547         prefetchw(pref + EHEA_CACHE_LINE);
 548
 549         pref = (skb_array[x]->data);
 550         prefetchw(pref);
 551         prefetchw(pref + EHEA_CACHE_LINE);
 552
 553         skb = skb_array[wqe_index];
 554         skb_array[wqe_index] = NULL;
 555         return skb;
 556 }
 557
 558 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
 559                                  struct ehea_cqe *cqe, int *processed_rq2,
 560                                  int *processed_rq3)
 561 {
 562         struct sk_buff *skb;
 563
 564         if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
 565                 pr->p_stats.err_tcp_cksum++;
 566         if (cqe->status & EHEA_CQE_STAT_ERR_IP)
 567                 pr->p_stats.err_ip_cksum++;
 568         if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
 569                 pr->p_stats.err_frame_crc++;
 570
 571         if (rq == 2) {
 572                 *processed_rq2 += 1;
 573                 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
 574                 dev_kfree_skb(skb);
 575         } else if (rq == 3) {
 576                 *processed_rq3 += 1;
 577                 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
 578                 dev_kfree_skb(skb);
 579         }
 580
 581         if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
 582                 if (netif_msg_rx_err(pr->port)) {
 583                         ehea_error("Critical receive error for QP %d. "
 584                                    "Resetting port.", pr->qp->init_attr.qp_nr);
 585                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 586                 }
 587                 schedule_work(&pr->port->reset_task);
 588                 return 1;
 589         }
 590
 591         return 0;
 592 }
 593
 594 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
 595                        void **tcph, u64 *hdr_flags, void *priv)
 596 {
 597         struct ehea_cqe *cqe = priv;
 598         unsigned int ip_len;
 599         struct iphdr *iph;
 600
 601         /* non tcp/udp packets */
 602         if (!cqe->header_length)
 603                 return -1;
 604
 605         /* non tcp packet */
 606         skb_reset_network_header(skb);
 607         iph = ip_hdr(skb);
 608         if (iph->protocol != IPPROTO_TCP)
 609                 return -1;
 610
 611         ip_len = ip_hdrlen(skb);
 612         skb_set_transport_header(skb, ip_len);
 613         *tcph = tcp_hdr(skb);
 614
 615         /* check if ip header and tcp header are complete */
 616         if (iph->tot_len < ip_len + tcp_hdrlen(skb))
 617                 return -1;
 618
 619         *hdr_flags = LRO_IPV4 | LRO_TCP;
 620         *iphdr = iph;
 621
 622         return 0;
 623 }
 624
 625 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
 626                           struct sk_buff *skb)
 627 {
 628         int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
 629                 && pr->port->vgrp;
 630
 631         if (use_lro) {
 632                 if (vlan_extracted)
 633                         lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
 634                                                      pr->port->vgrp,
 635                                                      cqe->vlan_tag,
 636                                                      cqe);
 637                 else
 638                         lro_receive_skb(&pr->lro_mgr, skb, cqe);
 639         } else {
 640                 if (vlan_extracted)
 641                         vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
 642                                                  cqe->vlan_tag);
 643                 else
 644                         netif_receive_skb(skb);
 645         }
 646 }
 647
 648 static int ehea_proc_rwqes(struct net_device *dev,
 649                            struct ehea_port_res *pr,
 650                            int budget)
 651 {
 652         struct ehea_port *port = pr->port;
 653         struct ehea_qp *qp = pr->qp;
 654         struct ehea_cqe *cqe;
 655         struct sk_buff *skb;
 656         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 657         struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
 658         struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
 659         int skb_arr_rq1_len = pr->rq1_skba.len;
 660         int skb_arr_rq2_len = pr->rq2_skba.len;
 661         int skb_arr_rq3_len = pr->rq3_skba.len;
 662         int processed, processed_rq1, processed_rq2, processed_rq3;
 663         int wqe_index, last_wqe_index, rq, port_reset;
 664
 665         processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
 666         last_wqe_index = 0;
 667
 668         cqe = ehea_poll_rq1(qp, &wqe_index);
 669         while ((processed < budget) && cqe) {
 670                 ehea_inc_rq1(qp);
 671                 processed_rq1++;
 672                 processed++;
 673                 if (netif_msg_rx_status(port))
 674                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 675
 676                 last_wqe_index = wqe_index;
 677                 rmb();
 678                 if (!ehea_check_cqe(cqe, &rq)) {
 679                         if (rq == 1) {
 680                                 /* LL RQ1 */
 681                                 skb = get_skb_by_index_ll(skb_arr_rq1,
 682                                                           skb_arr_rq1_len,
 683                                                           wqe_index);
 684                                 if (unlikely(!skb)) {
 685                                         if (netif_msg_rx_err(port))
 686                                                 ehea_error("LL rq1: skb=NULL");
 687
 688                                         skb = netdev_alloc_skb(dev,
 689                                                                EHEA_L_PKT_SIZE);
 690                                         if (!skb)
 691                                                 break;
 692                                 }
 693                                 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
 694                                                  cqe->num_bytes_transfered - 4);
 695                                 ehea_fill_skb(dev, skb, cqe);
 696                         } else if (rq == 2) {
 697                                 /* RQ2 */
 698                                 skb = get_skb_by_index(skb_arr_rq2,
 699                                                        skb_arr_rq2_len, cqe);
 700                                 if (unlikely(!skb)) {
 701                                         if (netif_msg_rx_err(port))
 702                                                 ehea_error("rq2: skb=NULL");
 703                                         break;
 704                                 }
 705                                 ehea_fill_skb(dev, skb, cqe);
 706                                 processed_rq2++;
 707                         } else {
 708                                 /* RQ3 */
 709                                 skb = get_skb_by_index(skb_arr_rq3,
 710                                                        skb_arr_rq3_len, cqe);
 711                                 if (unlikely(!skb)) {
 712                                         if (netif_msg_rx_err(port))
 713                                                 ehea_error("rq3: skb=NULL");
 714                                         break;
 715                                 }
 716                                 ehea_fill_skb(dev, skb, cqe);
 717                                 processed_rq3++;
 718                         }
 719
 720                         ehea_proc_skb(pr, cqe, skb);
 721                         dev->last_rx = jiffies;
 722                 } else {
 723                         pr->p_stats.poll_receive_errors++;
 724                         port_reset = ehea_treat_poll_error(pr, rq, cqe,
 725                                                            &processed_rq2,
 726                                                            &processed_rq3);
 727                         if (port_reset)
 728                                 break;
 729                 }
 730                 cqe = ehea_poll_rq1(qp, &wqe_index);
 731         }
 732         if (use_lro)
 733                 lro_flush_all(&pr->lro_mgr);
 734
 735         pr->rx_packets += processed;
 736
 737         ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
 738         ehea_refill_rq2(pr, processed_rq2);
 739         ehea_refill_rq3(pr, processed_rq3);
 740
 741         return processed;
 742 }
 743
 744 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
 745 {
 746         struct sk_buff *skb;
 747         struct ehea_cq *send_cq = pr->send_cq;
 748         struct ehea_cqe *cqe;
 749         int quota = my_quota;
 750         int cqe_counter = 0;
 751         int swqe_av = 0;
 752         int index;
 753         unsigned long flags;
 754
 755         cqe = ehea_poll_cq(send_cq);
 756         while (cqe && (quota > 0)) {
 757                 ehea_inc_cq(send_cq);
 758
 759                 cqe_counter++;
 760                 rmb();
 761                 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
 762                         ehea_error("Send Completion Error: Resetting port");
 763                         if (netif_msg_tx_err(pr->port))
 764                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
 765                         schedule_work(&pr->port->reset_task);
 766                         break;
 767                 }
 768
 769                 if (netif_msg_tx_done(pr->port))
 770                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 771
 772                 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
 773                            == EHEA_SWQE2_TYPE)) {
 774
 775                         index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 776                         skb = pr->sq_skba.arr[index];
 777                         dev_kfree_skb(skb);
 778                         pr->sq_skba.arr[index] = NULL;
 779                 }
 780
 781                 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
 782                 quota--;
 783
 784                 cqe = ehea_poll_cq(send_cq);
 785         };
 786
 787         ehea_update_feca(send_cq, cqe_counter);
 788         atomic_add(swqe_av, &pr->swqe_avail);
 789
 790         spin_lock_irqsave(&pr->netif_queue, flags);
 791
 792         if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
 793                                   >= pr->swqe_refill_th)) {
 794                 netif_wake_queue(pr->port->netdev);
 795                 pr->queue_stopped = 0;
 796         }
 797         spin_unlock_irqrestore(&pr->netif_queue, flags);
 798
 799         return cqe;
 800 }
 801
 802 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
 803 #define EHEA_POLL_MAX_CQES 65535
 804
 805 static int ehea_poll(struct napi_struct *napi, int budget)
 806 {
 807         struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
 808                                                 napi);
 809         struct net_device *dev = pr->port->netdev;
 810         struct ehea_cqe *cqe;
 811         struct ehea_cqe *cqe_skb = NULL;
 812         int force_irq, wqe_index;
 813         int rx = 0;
 814
 815         force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
 816         cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 817
 818         if (!force_irq)
 819                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 820
 821         while ((rx != budget) || force_irq) {
 822                 pr->poll_counter = 0;
 823                 force_irq = 0;
 824                 netif_rx_complete(dev, napi);
 825                 ehea_reset_cq_ep(pr->recv_cq);
 826                 ehea_reset_cq_ep(pr->send_cq);
 827                 ehea_reset_cq_n1(pr->recv_cq);
 828                 ehea_reset_cq_n1(pr->send_cq);
 829                 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
 830                 cqe_skb = ehea_poll_cq(pr->send_cq);
 831
 832                 if (!cqe && !cqe_skb)
 833                         return rx;
 834
 835                 if (!netif_rx_reschedule(dev, napi))
 836                         return rx;
 837
 838                 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 839                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 840         }
 841
 842         pr->poll_counter++;
 843         return rx;
 844 }
 845
 846 #ifdef CONFIG_NET_POLL_CONTROLLER
 847 static void ehea_netpoll(struct net_device *dev)
 848 {
 849         struct ehea_port *port = netdev_priv(dev);
 850         int i;
 851
 852         for (i = 0; i < port->num_def_qps; i++)
 853                 netif_rx_schedule(dev, &port->port_res[i].napi);
 854 }
 855 #endif
 856
 857 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 858 {
 859         struct ehea_port_res *pr = param;
 860
 861         netif_rx_schedule(pr->port->netdev, &pr->napi);
 862
 863         return IRQ_HANDLED;
 864 }
 865
 866 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 867 {
 868         struct ehea_port *port = param;
 869         struct ehea_eqe *eqe;
 870         struct ehea_qp *qp;
 871         u32 qp_token;
 872
 873         eqe = ehea_poll_eq(port->qp_eq);
 874
 875         while (eqe) {
 876                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 877                 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
 878                            eqe->entry, qp_token);
 879
 880                 qp = port->port_res[qp_token].qp;
 881                 ehea_error_data(port->adapter, qp->fw_handle);
 882                 eqe = ehea_poll_eq(port->qp_eq);
 883         }
 884
 885         schedule_work(&port->reset_task);
 886
 887         return IRQ_HANDLED;
 888 }
 889
 890 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 891                                        int logical_port)
 892 {
 893         int i;
 894
 895         for (i = 0; i < EHEA_MAX_PORTS; i++)
 896                 if (adapter->port[i])
 897                         if (adapter->port[i]->logical_port_id == logical_port)
 898                                 return adapter->port[i];
 899         return NULL;
 900 }
 901
 902 int ehea_sense_port_attr(struct ehea_port *port)
 903 {
 904         int ret;
 905         u64 hret;
 906         struct hcp_ehea_port_cb0 *cb0;
 907
 908         /* may be called via ehea_neq_tasklet() */
 909         cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
 910         if (!cb0) {
 911                 ehea_error("no mem for cb0");
 912                 ret = -ENOMEM;
 913                 goto out;
 914         }
 915
 916         hret = ehea_h_query_ehea_port(port->adapter->handle,
 917                                       port->logical_port_id, H_PORT_CB0,
 918                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 919                                       cb0);
 920         if (hret != H_SUCCESS) {
 921                 ret = -EIO;
 922                 goto out_free;
 923         }
 924
 925         /* MAC address */
 926         port->mac_addr = cb0->port_mac_addr << 16;
 927
 928         if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
 929                 ret = -EADDRNOTAVAIL;
 930                 goto out_free;
 931         }
 932
 933         /* Port speed */
 934         switch (cb0->port_speed) {
 935         case H_SPEED_10M_H:
 936                 port->port_speed = EHEA_SPEED_10M;
 937                 port->full_duplex = 0;
 938                 break;
 939         case H_SPEED_10M_F:
 940                 port->port_speed = EHEA_SPEED_10M;
 941                 port->full_duplex = 1;
 942                 break;
 943         case H_SPEED_100M_H:
 944                 port->port_speed = EHEA_SPEED_100M;
 945                 port->full_duplex = 0;
 946                 break;
 947         case H_SPEED_100M_F:
 948                 port->port_speed = EHEA_SPEED_100M;
 949                 port->full_duplex = 1;
 950                 break;
 951         case H_SPEED_1G_F:
 952                 port->port_speed = EHEA_SPEED_1G;
 953                 port->full_duplex = 1;
 954                 break;
 955         case H_SPEED_10G_F:
 956                 port->port_speed = EHEA_SPEED_10G;
 957                 port->full_duplex = 1;
 958                 break;
 959         default:
 960                 port->port_speed = 0;
 961                 port->full_duplex = 0;
 962                 break;
 963         }
 964
 965         port->autoneg = 1;
 966         port->num_mcs = cb0->num_default_qps;
 967
 968         /* Number of default QPs */
 969         if (use_mcs)
 970                 port->num_def_qps = cb0->num_default_qps;
 971         else
 972                 port->num_def_qps = 1;
 973
 974         if (!port->num_def_qps) {
 975                 ret = -EINVAL;
 976                 goto out_free;
 977         }
 978
 979         port->num_tx_qps = num_tx_qps;
 980
 981         if (port->num_def_qps >= port->num_tx_qps)
 982                 port->num_add_tx_qps = 0;
 983         else
 984                 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
 985
 986         ret = 0;
 987 out_free:
 988         if (ret || netif_msg_probe(port))
 989                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
 990         kfree(cb0);
 991 out:
 992         return ret;
 993 }
 994
 995 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
 996 {
 997         struct hcp_ehea_port_cb4 *cb4;
 998         u64 hret;
 999         int ret = 0;
1000
1001         cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1002         if (!cb4) {
1003                 ehea_error("no mem for cb4");
1004                 ret = -ENOMEM;
1005                 goto out;
1006         }
1007
1008         cb4->port_speed = port_speed;
1009
1010         netif_carrier_off(port->netdev);
1011
1012         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1013                                        port->logical_port_id,
1014                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1015         if (hret == H_SUCCESS) {
1016                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1017
1018                 hret = ehea_h_query_ehea_port(port->adapter->handle,
1019                                               port->logical_port_id,
1020                                               H_PORT_CB4, H_PORT_CB4_SPEED,
1021                                               cb4);
1022                 if (hret == H_SUCCESS) {
1023                         switch (cb4->port_speed) {
1024                         case H_SPEED_10M_H:
1025                                 port->port_speed = EHEA_SPEED_10M;
1026                                 port->full_duplex = 0;
1027                                 break;
1028                         case H_SPEED_10M_F:
1029                                 port->port_speed = EHEA_SPEED_10M;
1030                                 port->full_duplex = 1;
1031                                 break;
1032                         case H_SPEED_100M_H:
1033                                 port->port_speed = EHEA_SPEED_100M;
1034                                 port->full_duplex = 0;
1035                                 break;
1036                         case H_SPEED_100M_F:
1037                                 port->port_speed = EHEA_SPEED_100M;
1038                                 port->full_duplex = 1;
1039                                 break;
1040                         case H_SPEED_1G_F:
1041                                 port->port_speed = EHEA_SPEED_1G;
1042                                 port->full_duplex = 1;
1043                                 break;
1044                         case H_SPEED_10G_F:
1045                                 port->port_speed = EHEA_SPEED_10G;
1046                                 port->full_duplex = 1;
1047                                 break;
1048                         default:
1049                                 port->port_speed = 0;
1050                                 port->full_duplex = 0;
1051                                 break;
1052                         }
1053                 } else {
1054                         ehea_error("Failed sensing port speed");
1055                         ret = -EIO;
1056                 }
1057         } else {
1058                 if (hret == H_AUTHORITY) {
1059                         ehea_info("Hypervisor denied setting port speed");
1060                         ret = -EPERM;
1061                 } else {
1062                         ret = -EIO;
1063                         ehea_error("Failed setting port speed");
1064                 }
1065         }
1066         if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1067                 netif_carrier_on(port->netdev);
1068
1069         kfree(cb4);
1070 out:
1071         return ret;
1072 }
1073
1074 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1075 {
1076         int ret;
1077         u8 ec;
1078         u8 portnum;
1079         struct ehea_port *port;
1080
1081         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1082         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1083         port = ehea_get_port(adapter, portnum);
1084
1085         switch (ec) {
1086         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
1087
1088                 if (!port) {
1089                         ehea_error("unknown portnum %x", portnum);
1090                         break;
1091                 }
1092
1093                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1094                         if (!netif_carrier_ok(port->netdev)) {
1095                                 ret = ehea_sense_port_attr(port);
1096                                 if (ret) {
1097                                         ehea_error("failed resensing port "
1098                                                    "attributes");
1099                                         break;
1100                                 }
1101
1102                                 if (netif_msg_link(port))
1103                                         ehea_info("%s: Logical port up: %dMbps "
1104                                                   "%s Duplex",
1105                                                   port->netdev->name,
1106                                                   port->port_speed,
1107                                                   port->full_duplex ==
1108                                                   1 ? "Full" : "Half");
1109
1110                                 netif_carrier_on(port->netdev);
1111                                 netif_wake_queue(port->netdev);
1112                         }
1113                 } else
1114                         if (netif_carrier_ok(port->netdev)) {
1115                                 if (netif_msg_link(port))
1116                                         ehea_info("%s: Logical port down",
1117                                                   port->netdev->name);
1118                                 netif_carrier_off(port->netdev);
1119                                 netif_stop_queue(port->netdev);
1120                         }
1121
1122                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1123                         port->phy_link = EHEA_PHY_LINK_UP;
1124                         if (netif_msg_link(port))
1125                                 ehea_info("%s: Physical port up",
1126                                           port->netdev->name);
1127                         if (prop_carrier_state)
1128                                 netif_carrier_on(port->netdev);
1129                 } else {
1130                         port->phy_link = EHEA_PHY_LINK_DOWN;
1131                         if (netif_msg_link(port))
1132                                 ehea_info("%s: Physical port down",
1133                                           port->netdev->name);
1134                         if (prop_carrier_state)
1135                                 netif_carrier_off(port->netdev);
1136                 }
1137
1138                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1139                         ehea_info("External switch port is primary port");
1140                 else
1141                         ehea_info("External switch port is backup port");
1142
1143                 break;
1144         case EHEA_EC_ADAPTER_MALFUNC:
1145                 ehea_error("Adapter malfunction");
1146                 break;
1147         case EHEA_EC_PORT_MALFUNC:
1148                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1149                 netif_carrier_off(port->netdev);
1150                 netif_stop_queue(port->netdev);
1151                 break;
1152         default:
1153                 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
1154                 break;
1155         }
1156 }
1157
1158 static void ehea_neq_tasklet(unsigned long data)
1159 {
1160         struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1161         struct ehea_eqe *eqe;
1162         u64 event_mask;
1163
1164         eqe = ehea_poll_eq(adapter->neq);
1165         ehea_debug("eqe=%p", eqe);
1166
1167         while (eqe) {
1168                 ehea_debug("*eqe=%lx", eqe->entry);
1169                 ehea_parse_eqe(adapter, eqe->entry);
1170                 eqe = ehea_poll_eq(adapter->neq);
1171                 ehea_debug("next eqe=%p", eqe);
1172         }
1173
1174         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1175                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1176                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1177
1178         ehea_h_reset_events(adapter->handle,
1179                             adapter->neq->fw_handle, event_mask);
1180 }
1181
1182 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1183 {
1184         struct ehea_adapter *adapter = param;
1185         tasklet_hi_schedule(&adapter->neq_tasklet);
1186         return IRQ_HANDLED;
1187 }
1188
1189
1190 static int ehea_fill_port_res(struct ehea_port_res *pr)
1191 {
1192         int ret;
1193         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1194
1195         ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1196                                      - init_attr->act_nr_rwqes_rq2
1197                                      - init_attr->act_nr_rwqes_rq3 - 1);
1198
1199         ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1200
1201         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1202
1203         return ret;
1204 }
1205
1206 static int ehea_reg_interrupts(struct net_device *dev)
1207 {
1208         struct ehea_port *port = netdev_priv(dev);
1209         struct ehea_port_res *pr;
1210         int i, ret;
1211
1212
1213         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1214                  dev->name);
1215
1216         ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1217                                   ehea_qp_aff_irq_handler,
1218                                   IRQF_DISABLED, port->int_aff_name, port);
1219         if (ret) {
1220                 ehea_error("failed registering irq for qp_aff_irq_handler:"
1221                            "ist=%X", port->qp_eq->attr.ist1);
1222                 goto out_free_qpeq;
1223         }
1224
1225         if (netif_msg_ifup(port))
1226                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1227                           "registered", port->qp_eq->attr.ist1);
1228
1229
1230         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1231                 pr = &port->port_res[i];
1232                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1233                          "%s-queue%d", dev->name, i);
1234                 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1235                                           ehea_recv_irq_handler,
1236                                           IRQF_DISABLED, pr->int_send_name,
1237                                           pr);
1238                 if (ret) {
1239                         ehea_error("failed registering irq for ehea_queue "
1240                                    "port_res_nr:%d, ist=%X", i,
1241                                    pr->eq->attr.ist1);
1242                         goto out_free_req;
1243                 }
1244                 if (netif_msg_ifup(port))
1245                         ehea_info("irq_handle 0x%X for function ehea_queue_int "
1246                                   "%d registered", pr->eq->attr.ist1, i);
1247         }
1248 out:
1249         return ret;
1250
1251
1252 out_free_req:
1253         while (--i >= 0) {
1254                 u32 ist = port->port_res[i].eq->attr.ist1;
1255                 ibmebus_free_irq(ist, &port->port_res[i]);
1256         }
1257
1258 out_free_qpeq:
1259         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1260         i = port->num_def_qps;
1261
1262         goto out;
1263
1264 }
1265
1266 static void ehea_free_interrupts(struct net_device *dev)
1267 {
1268         struct ehea_port *port = netdev_priv(dev);
1269         struct ehea_port_res *pr;
1270         int i;
1271
1272         /* send */
1273
1274         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1275                 pr = &port->port_res[i];
1276                 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1277                 if (netif_msg_intr(port))
1278                         ehea_info("free send irq for res %d with handle 0x%X",
1279                                   i, pr->eq->attr.ist1);
1280         }
1281
1282         /* associated events */
1283         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1284         if (netif_msg_intr(port))
1285                 ehea_info("associated event interrupt for handle 0x%X freed",
1286                           port->qp_eq->attr.ist1);
1287 }
1288
1289 static int ehea_configure_port(struct ehea_port *port)
1290 {
1291         int ret, i;
1292         u64 hret, mask;
1293         struct hcp_ehea_port_cb0 *cb0;
1294
1295         ret = -ENOMEM;
1296         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1297         if (!cb0)
1298                 goto out;
1299
1300         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1301                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1302                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1303                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1304                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1305                                       PXLY_RC_VLAN_FILTER)
1306                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1307
1308         for (i = 0; i < port->num_mcs; i++)
1309                 if (use_mcs)
1310                         cb0->default_qpn_arr[i] =
1311                                 port->port_res[i].qp->init_attr.qp_nr;
1312                 else
1313                         cb0->default_qpn_arr[i] =
1314                                 port->port_res[0].qp->init_attr.qp_nr;
1315
1316         if (netif_msg_ifup(port))
1317                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1318
1319         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1320              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1321
1322         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1323                                        port->logical_port_id,
1324                                        H_PORT_CB0, mask, cb0);
1325         ret = -EIO;
1326         if (hret != H_SUCCESS)
1327                 goto out_free;
1328
1329         ret = 0;
1330
1331 out_free:
1332         kfree(cb0);
1333 out:
1334         return ret;
1335 }
1336
1337 int ehea_gen_smrs(struct ehea_port_res *pr)
1338 {
1339         int ret;
1340         struct ehea_adapter *adapter = pr->port->adapter;
1341
1342         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1343         if (ret)
1344                 goto out;
1345
1346         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1347         if (ret)
1348                 goto out_free;
1349
1350         return 0;
1351
1352 out_free:
1353         ehea_rem_mr(&pr->send_mr);
1354 out:
1355         ehea_error("Generating SMRS failed\n");
1356         return -EIO;
1357 }
1358
1359 int ehea_rem_smrs(struct ehea_port_res *pr)
1360 {
1361         if ((ehea_rem_mr(&pr->send_mr))
1362             || (ehea_rem_mr(&pr->recv_mr)))
1363                 return -EIO;
1364         else
1365                 return 0;
1366 }
1367
1368 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1369 {
1370         int arr_size = sizeof(void *) * max_q_entries;
1371
1372         q_skba->arr = vmalloc(arr_size);
1373         if (!q_skba->arr)
1374                 return -ENOMEM;
1375
1376         memset(q_skba->arr, 0, arr_size);
1377
1378         q_skba->len = max_q_entries;
1379         q_skba->index = 0;
1380         q_skba->os_skbs = 0;
1381
1382         return 0;
1383 }
1384
1385 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1386                               struct port_res_cfg *pr_cfg, int queue_token)
1387 {
1388         struct ehea_adapter *adapter = port->adapter;
1389         enum ehea_eq_type eq_type = EHEA_EQ;
1390         struct ehea_qp_init_attr *init_attr = NULL;
1391         int ret = -EIO;
1392
1393         memset(pr, 0, sizeof(struct ehea_port_res));
1394
1395         pr->port = port;
1396         spin_lock_init(&pr->xmit_lock);
1397         spin_lock_init(&pr->netif_queue);
1398
1399         pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1400         if (!pr->eq) {
1401                 ehea_error("create_eq failed (eq)");
1402                 goto out_free;
1403         }
1404
1405         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1406                                      pr->eq->fw_handle,
1407                                      port->logical_port_id);
1408         if (!pr->recv_cq) {
1409                 ehea_error("create_cq failed (cq_recv)");
1410                 goto out_free;
1411         }
1412
1413         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1414                                      pr->eq->fw_handle,
1415                                      port->logical_port_id);
1416         if (!pr->send_cq) {
1417                 ehea_error("create_cq failed (cq_send)");
1418                 goto out_free;
1419         }
1420
1421         if (netif_msg_ifup(port))
1422                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1423                           pr->send_cq->attr.act_nr_of_cqes,
1424                           pr->recv_cq->attr.act_nr_of_cqes);
1425
1426         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1427         if (!init_attr) {
1428                 ret = -ENOMEM;
1429                 ehea_error("no mem for ehea_qp_init_attr");
1430                 goto out_free;
1431         }
1432
1433         init_attr->low_lat_rq1 = 1;
1434         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1435         init_attr->rq_count = 3;
1436         init_attr->qp_token = queue_token;
1437         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1438         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1439         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1440         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1441         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1442         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1443         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1444         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1445         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1446         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1447         init_attr->port_nr = port->logical_port_id;
1448         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1449         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1450         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1451
1452         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1453         if (!pr->qp) {
1454                 ehea_error("create_qp failed");
1455                 ret = -EIO;
1456                 goto out_free;
1457         }
1458
1459         if (netif_msg_ifup(port))
1460                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1461                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1462                           init_attr->act_nr_send_wqes,
1463                           init_attr->act_nr_rwqes_rq1,
1464                           init_attr->act_nr_rwqes_rq2,
1465                           init_attr->act_nr_rwqes_rq3);
1466
1467         ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1468         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1469         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1470         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1471         if (ret)
1472                 goto out_free;
1473
1474         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1475         if (ehea_gen_smrs(pr) != 0) {
1476                 ret = -EIO;
1477                 goto out_free;
1478         }
1479
1480         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1481
1482         kfree(init_attr);
1483
1484         netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1485
1486         pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1487         pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1488         pr->lro_mgr.lro_arr = pr->lro_desc;
1489         pr->lro_mgr.get_skb_header = get_skb_hdr;
1490         pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1491         pr->lro_mgr.dev = port->netdev;
1492         pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1493         pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1494
1495         ret = 0;
1496         goto out;
1497
1498 out_free:
1499         kfree(init_attr);
1500         vfree(pr->sq_skba.arr);
1501         vfree(pr->rq1_skba.arr);
1502         vfree(pr->rq2_skba.arr);
1503         vfree(pr->rq3_skba.arr);
1504         ehea_destroy_qp(pr->qp);
1505         ehea_destroy_cq(pr->send_cq);
1506         ehea_destroy_cq(pr->recv_cq);
1507         ehea_destroy_eq(pr->eq);
1508 out:
1509         return ret;
1510 }
1511
1512 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1513 {
1514         int ret, i;
1515
1516         ret = ehea_destroy_qp(pr->qp);
1517
1518         if (!ret) {
1519                 ehea_destroy_cq(pr->send_cq);
1520                 ehea_destroy_cq(pr->recv_cq);
1521                 ehea_destroy_eq(pr->eq);
1522
1523                 for (i = 0; i < pr->rq1_skba.len; i++)
1524                         if (pr->rq1_skba.arr[i])
1525                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1526
1527                 for (i = 0; i < pr->rq2_skba.len; i++)
1528                         if (pr->rq2_skba.arr[i])
1529                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1530
1531                 for (i = 0; i < pr->rq3_skba.len; i++)
1532                         if (pr->rq3_skba.arr[i])
1533                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1534
1535                 for (i = 0; i < pr->sq_skba.len; i++)
1536                         if (pr->sq_skba.arr[i])
1537                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1538
1539                 vfree(pr->rq1_skba.arr);
1540                 vfree(pr->rq2_skba.arr);
1541                 vfree(pr->rq3_skba.arr);
1542                 vfree(pr->sq_skba.arr);
1543                 ret = ehea_rem_smrs(pr);
1544         }
1545         return ret;
1546 }
1547
1548 /*
1549  * The write_* functions store information in swqe which is used by
1550  * the hardware to calculate the ip/tcp/udp checksum
1551  */
1552
1553 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1554                                       const struct sk_buff *skb)
1555 {
1556         swqe->ip_start = skb_network_offset(skb);
1557         swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1558 }
1559
1560 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1561                                         const struct sk_buff *skb)
1562 {
1563         swqe->tcp_offset =
1564                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1565
1566         swqe->tcp_end = (u16)skb->len - 1;
1567 }
1568
1569 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1570                                         const struct sk_buff *skb)
1571 {
1572         swqe->tcp_offset =
1573                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1574
1575         swqe->tcp_end = (u16)skb->len - 1;
1576 }
1577
1578
1579 static void write_swqe2_TSO(struct sk_buff *skb,
1580                             struct ehea_swqe *swqe, u32 lkey)
1581 {
1582         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1583         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1584         int skb_data_size = skb->len - skb->data_len;
1585         int headersize;
1586
1587         /* Packet is TCP with TSO enabled */
1588         swqe->tx_control |= EHEA_SWQE_TSO;
1589         swqe->mss = skb_shinfo(skb)->gso_size;
1590         /* copy only eth/ip/tcp headers to immediate data and
1591          * the rest of skb->data to sg1entry
1592          */
1593         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1594
1595         skb_data_size = skb->len - skb->data_len;
1596
1597         if (skb_data_size >= headersize) {
1598                 /* copy immediate data */
1599                 skb_copy_from_linear_data(skb, imm_data, headersize);
1600                 swqe->immediate_data_length = headersize;
1601
1602                 if (skb_data_size > headersize) {
1603                         /* set sg1entry data */
1604                         sg1entry->l_key = lkey;
1605                         sg1entry->len = skb_data_size - headersize;
1606                         sg1entry->vaddr =
1607                                 ehea_map_vaddr(skb->data + headersize);
1608                         swqe->descriptors++;
1609                 }
1610         } else
1611                 ehea_error("cannot handle fragmented headers");
1612 }
1613
1614 static void write_swqe2_nonTSO(struct sk_buff *skb,
1615                                struct ehea_swqe *swqe, u32 lkey)
1616 {
1617         int skb_data_size = skb->len - skb->data_len;
1618         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1619         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1620
1621         /* Packet is any nonTSO type
1622          *
1623          * Copy as much as possible skb->data to immediate data and
1624          * the rest to sg1entry
1625          */
1626         if (skb_data_size >= SWQE2_MAX_IMM) {
1627                 /* copy immediate data */
1628                 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1629
1630                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1631
1632                 if (skb_data_size > SWQE2_MAX_IMM) {
1633                         /* copy sg1entry data */
1634                         sg1entry->l_key = lkey;
1635                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1636                         sg1entry->vaddr =
1637                                 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1638                         swqe->descriptors++;
1639                 }
1640         } else {
1641                 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1642                 swqe->immediate_data_length = skb_data_size;
1643         }
1644 }
1645
1646 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1647                                     struct ehea_swqe *swqe, u32 lkey)
1648 {
1649         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1650         skb_frag_t *frag;
1651         int nfrags, sg1entry_contains_frag_data, i;
1652
1653         nfrags = skb_shinfo(skb)->nr_frags;
1654         sg1entry = &swqe->u.immdata_desc.sg_entry;
1655         sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1656         swqe->descriptors = 0;
1657         sg1entry_contains_frag_data = 0;
1658
1659         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1660                 write_swqe2_TSO(skb, swqe, lkey);
1661         else
1662                 write_swqe2_nonTSO(skb, swqe, lkey);
1663
1664         /* write descriptors */
1665         if (nfrags > 0) {
1666                 if (swqe->descriptors == 0) {
1667                         /* sg1entry not yet used */
1668                         frag = &skb_shinfo(skb)->frags[0];
1669
1670                         /* copy sg1entry data */
1671                         sg1entry->l_key = lkey;
1672                         sg1entry->len = frag->size;
1673                         sg1entry->vaddr =
1674                                 ehea_map_vaddr(page_address(frag->page)
1675                                                + frag->page_offset);
1676                         swqe->descriptors++;
1677                         sg1entry_contains_frag_data = 1;
1678                 }
1679
1680                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1681
1682                         frag = &skb_shinfo(skb)->frags[i];
1683                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1684
1685                         sgentry->l_key = lkey;
1686                         sgentry->len = frag->size;
1687                         sgentry->vaddr =
1688                                 ehea_map_vaddr(page_address(frag->page)
1689                                                + frag->page_offset);
1690                         swqe->descriptors++;
1691                 }
1692         }
1693 }
1694
1695 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1696 {
1697         int ret = 0;
1698         u64 hret;
1699         u8 reg_type;
1700
1701         /* De/Register untagged packets */
1702         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1703         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1704                                      port->logical_port_id,
1705                                      reg_type, port->mac_addr, 0, hcallid);
1706         if (hret != H_SUCCESS) {
1707                 ehea_error("%sregistering bc address failed (tagged)",
1708                            hcallid == H_REG_BCMC ? "" : "de");
1709                 ret = -EIO;
1710                 goto out_herr;
1711         }
1712
1713         /* De/Register VLAN packets */
1714         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1715         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1716                                      port->logical_port_id,
1717                                      reg_type, port->mac_addr, 0, hcallid);
1718         if (hret != H_SUCCESS) {
1719                 ehea_error("%sregistering bc address failed (vlan)",
1720                            hcallid == H_REG_BCMC ? "" : "de");
1721                 ret = -EIO;
1722         }
1723 out_herr:
1724         return ret;
1725 }
1726
1727 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1728 {
1729         struct ehea_port *port = netdev_priv(dev);
1730         struct sockaddr *mac_addr = sa;
1731         struct hcp_ehea_port_cb0 *cb0;
1732         int ret;
1733         u64 hret;
1734
1735         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1736                 ret = -EADDRNOTAVAIL;
1737                 goto out;
1738         }
1739
1740         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1741         if (!cb0) {
1742                 ehea_error("no mem for cb0");
1743                 ret = -ENOMEM;
1744                 goto out;
1745         }
1746
1747         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1748
1749         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1750
1751         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1752                                        port->logical_port_id, H_PORT_CB0,
1753                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1754         if (hret != H_SUCCESS) {
1755                 ret = -EIO;
1756                 goto out_free;
1757         }
1758
1759         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1760
1761         down(&ehea_bcmc_regs.lock);
1762
1763         /* Deregister old MAC in pHYP */
1764         ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1765         if (ret)
1766                 goto out_upregs;
1767
1768         port->mac_addr = cb0->port_mac_addr << 16;
1769
1770         /* Register new MAC in pHYP */
1771         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1772         if (ret)
1773                 goto out_upregs;
1774
1775         ret = 0;
1776
1777 out_upregs:
1778         ehea_update_bcmc_registrations();
1779         up(&ehea_bcmc_regs.lock);
1780 out_free:
1781         kfree(cb0);
1782 out:
1783         return ret;
1784 }
1785
1786 static void ehea_promiscuous_error(u64 hret, int enable)
1787 {
1788         if (hret == H_AUTHORITY)
1789                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1790                           enable == 1 ? "en" : "dis");
1791         else
1792                 ehea_error("failed %sabling promiscuous mode",
1793                            enable == 1 ? "en" : "dis");
1794 }
1795
1796 static void ehea_promiscuous(struct net_device *dev, int enable)
1797 {
1798         struct ehea_port *port = netdev_priv(dev);
1799         struct hcp_ehea_port_cb7 *cb7;
1800         u64 hret;
1801
1802         if ((enable && port->promisc) || (!enable && !port->promisc))
1803                 return;
1804
1805         cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1806         if (!cb7) {
1807                 ehea_error("no mem for cb7");
1808                 goto out;
1809         }
1810
1811         /* Modify Pxs_DUCQPN in CB7 */
1812         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1813
1814         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1815                                        port->logical_port_id,
1816                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1817         if (hret) {
1818                 ehea_promiscuous_error(hret, enable);
1819                 goto out;
1820         }
1821
1822         port->promisc = enable;
1823 out:
1824         kfree(cb7);
1825         return;
1826 }
1827
1828 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1829                                      u32 hcallid)
1830 {
1831         u64 hret;
1832         u8 reg_type;
1833
1834         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1835                  | EHEA_BCMC_UNTAGGED;
1836
1837         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1838                                      port->logical_port_id,
1839                                      reg_type, mc_mac_addr, 0, hcallid);
1840         if (hret)
1841                 goto out;
1842
1843         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1844                  | EHEA_BCMC_VLANID_ALL;
1845
1846         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1847                                      port->logical_port_id,
1848                                      reg_type, mc_mac_addr, 0, hcallid);
1849 out:
1850         return hret;
1851 }
1852
1853 static int ehea_drop_multicast_list(struct net_device *dev)
1854 {
1855         struct ehea_port *port = netdev_priv(dev);
1856         struct ehea_mc_list *mc_entry = port->mc_list;
1857         struct list_head *pos;
1858         struct list_head *temp;
1859         int ret = 0;
1860         u64 hret;
1861
1862         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1863                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1864
1865                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1866                                                  H_DEREG_BCMC);
1867                 if (hret) {
1868                         ehea_error("failed deregistering mcast MAC");
1869                         ret = -EIO;
1870                 }
1871
1872                 list_del(pos);
1873                 kfree(mc_entry);
1874         }
1875         return ret;
1876 }
1877
1878 static void ehea_allmulti(struct net_device *dev, int enable)
1879 {
1880         struct ehea_port *port = netdev_priv(dev);
1881         u64 hret;
1882
1883         if (!port->allmulti) {
1884                 if (enable) {
1885                         /* Enable ALLMULTI */
1886                         ehea_drop_multicast_list(dev);
1887                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1888                         if (!hret)
1889                                 port->allmulti = 1;
1890                         else
1891                                 ehea_error("failed enabling IFF_ALLMULTI");
1892                 }
1893         } else
1894                 if (!enable) {
1895                         /* Disable ALLMULTI */
1896                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1897                         if (!hret)
1898                                 port->allmulti = 0;
1899                         else
1900                                 ehea_error("failed disabling IFF_ALLMULTI");
1901                 }
1902 }
1903
1904 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1905 {
1906         struct ehea_mc_list *ehea_mcl_entry;
1907         u64 hret;
1908
1909         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1910         if (!ehea_mcl_entry) {
1911                 ehea_error("no mem for mcl_entry");
1912                 return;
1913         }
1914
1915         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1916
1917         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1918
1919         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1920                                          H_REG_BCMC);
1921         if (!hret)
1922                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1923         else {
1924                 ehea_error("failed registering mcast MAC");
1925                 kfree(ehea_mcl_entry);
1926         }
1927 }
1928
1929 static void ehea_set_multicast_list(struct net_device *dev)
1930 {
1931         struct ehea_port *port = netdev_priv(dev);
1932         struct dev_mc_list *k_mcl_entry;
1933         int ret, i;
1934
1935         if (dev->flags & IFF_PROMISC) {
1936                 ehea_promiscuous(dev, 1);
1937                 return;
1938         }
1939         ehea_promiscuous(dev, 0);
1940
1941         down(&ehea_bcmc_regs.lock);
1942
1943         if (dev->flags & IFF_ALLMULTI) {
1944                 ehea_allmulti(dev, 1);
1945                 goto out;
1946         }
1947         ehea_allmulti(dev, 0);
1948
1949         if (dev->mc_count) {
1950                 ret = ehea_drop_multicast_list(dev);
1951                 if (ret) {
1952                         /* Dropping the current multicast list failed.
1953                          * Enabling ALL_MULTI is the best we can do.
1954                          */
1955                         ehea_allmulti(dev, 1);
1956                 }
1957
1958                 if (dev->mc_count > port->adapter->max_mc_mac) {
1959                         ehea_info("Mcast registration limit reached (0x%lx). "
1960                                   "Use ALLMULTI!",
1961                                   port->adapter->max_mc_mac);
1962                         goto out;
1963                 }
1964
1965                 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1966                              k_mcl_entry = k_mcl_entry->next)
1967                         ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1968
1969         }
1970 out:
1971         ehea_update_bcmc_registrations();
1972         up(&ehea_bcmc_regs.lock);
1973         return;
1974 }
1975
1976 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1977 {
1978         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1979                 return -EINVAL;
1980         dev->mtu = new_mtu;
1981         return 0;
1982 }
1983
1984 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1985                        struct ehea_swqe *swqe, u32 lkey)
1986 {
1987         if (skb->protocol == htons(ETH_P_IP)) {
1988                 const struct iphdr *iph = ip_hdr(skb);
1989
1990                 /* IPv4 */
1991                 swqe->tx_control |= EHEA_SWQE_CRC
1992                                  | EHEA_SWQE_IP_CHECKSUM
1993                                  | EHEA_SWQE_TCP_CHECKSUM
1994                                  | EHEA_SWQE_IMM_DATA_PRESENT
1995                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
1996
1997                 write_ip_start_end(swqe, skb);
1998
1999                 if (iph->protocol == IPPROTO_UDP) {
2000                         if ((iph->frag_off & IP_MF)
2001                             || (iph->frag_off & IP_OFFSET))
2002                                 /* IP fragment, so don't change cs */
2003                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2004                         else
2005                                 write_udp_offset_end(swqe, skb);
2006                 } else if (iph->protocol == IPPROTO_TCP) {
2007                         write_tcp_offset_end(swqe, skb);
2008                 }
2009
2010                 /* icmp (big data) and ip segmentation packets (all other ip
2011                    packets) do not require any special handling */
2012
2013         } else {
2014                 /* Other Ethernet Protocol */
2015                 swqe->tx_control |= EHEA_SWQE_CRC
2016                                  | EHEA_SWQE_IMM_DATA_PRESENT
2017                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2018         }
2019
2020         write_swqe2_data(skb, dev, swqe, lkey);
2021 }
2022
2023 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2024                        struct ehea_swqe *swqe)
2025 {
2026         int nfrags = skb_shinfo(skb)->nr_frags;
2027         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2028         skb_frag_t *frag;
2029         int i;
2030
2031         if (skb->protocol == htons(ETH_P_IP)) {
2032                 const struct iphdr *iph = ip_hdr(skb);
2033
2034                 /* IPv4 */
2035                 write_ip_start_end(swqe, skb);
2036
2037                 if (iph->protocol == IPPROTO_TCP) {
2038                         swqe->tx_control |= EHEA_SWQE_CRC
2039                                          | EHEA_SWQE_IP_CHECKSUM
2040                                          | EHEA_SWQE_TCP_CHECKSUM
2041                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2042
2043                         write_tcp_offset_end(swqe, skb);
2044
2045                 } else if (iph->protocol == IPPROTO_UDP) {
2046                         if ((iph->frag_off & IP_MF)
2047                             || (iph->frag_off & IP_OFFSET))
2048                                 /* IP fragment, so don't change cs */
2049                                 swqe->tx_control |= EHEA_SWQE_CRC
2050                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2051                         else {
2052                                 swqe->tx_control |= EHEA_SWQE_CRC
2053                                                  | EHEA_SWQE_IP_CHECKSUM
2054                                                  | EHEA_SWQE_TCP_CHECKSUM
2055                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2056
2057                                 write_udp_offset_end(swqe, skb);
2058                         }
2059                 } else {
2060                         /* icmp (big data) and
2061                            ip segmentation packets (all other ip packets) */
2062                         swqe->tx_control |= EHEA_SWQE_CRC
2063                                          | EHEA_SWQE_IP_CHECKSUM
2064                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2065                 }
2066         } else {
2067                 /* Other Ethernet Protocol */
2068                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2069         }
2070         /* copy (immediate) data */
2071         if (nfrags == 0) {
2072                 /* data is in a single piece */
2073                 skb_copy_from_linear_data(skb, imm_data, skb->len);
2074         } else {
2075                 /* first copy data from the skb->data buffer ... */
2076                 skb_copy_from_linear_data(skb, imm_data,
2077                                           skb->len - skb->data_len);
2078                 imm_data += skb->len - skb->data_len;
2079
2080                 /* ... then copy data from the fragments */
2081                 for (i = 0; i < nfrags; i++) {
2082                         frag = &skb_shinfo(skb)->frags[i];
2083                         memcpy(imm_data,
2084                                page_address(frag->page) + frag->page_offset,
2085                                frag->size);
2086                         imm_data += frag->size;
2087                 }
2088         }
2089         swqe->immediate_data_length = skb->len;
2090         dev_kfree_skb(skb);
2091 }
2092
2093 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2094 {
2095         struct tcphdr *tcp;
2096         u32 tmp;
2097
2098         if ((skb->protocol == htons(ETH_P_IP)) &&
2099             (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2100                 tcp = (struct tcphdr *)(skb_network_header(skb) +
2101                                         (ip_hdr(skb)->ihl * 4));
2102                 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2103                 tmp += ip_hdr(skb)->daddr % 31;
2104                 return tmp % num_qps;
2105         } else
2106                 return 0;
2107 }
2108
2109 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2110 {
2111         struct ehea_port *port = netdev_priv(dev);
2112         struct ehea_swqe *swqe;
2113         unsigned long flags;
2114         u32 lkey;
2115         int swqe_index;
2116         struct ehea_port_res *pr;
2117
2118         pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2119
2120         if (!spin_trylock(&pr->xmit_lock))
2121                 return NETDEV_TX_BUSY;
2122
2123         if (pr->queue_stopped) {
2124                 spin_unlock(&pr->xmit_lock);
2125                 return NETDEV_TX_BUSY;
2126         }
2127
2128         swqe = ehea_get_swqe(pr->qp, &swqe_index);
2129         memset(swqe, 0, SWQE_HEADER_SIZE);
2130         atomic_dec(&pr->swqe_avail);
2131
2132         if (skb->len <= SWQE3_MAX_IMM) {
2133                 u32 sig_iv = port->sig_comp_iv;
2134                 u32 swqe_num = pr->swqe_id_counter;
2135                 ehea_xmit3(skb, dev, swqe);
2136                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2137                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2138                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2139                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2140                                                       sig_iv);
2141                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2142                         pr->swqe_ll_count = 0;
2143                 } else
2144                         pr->swqe_ll_count += 1;
2145         } else {
2146                 swqe->wr_id =
2147                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2148                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2149                       | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2150                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2151                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2152
2153                 pr->sq_skba.index++;
2154                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2155
2156                 lkey = pr->send_mr.lkey;
2157                 ehea_xmit2(skb, dev, swqe, lkey);
2158                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2159         }
2160         pr->swqe_id_counter += 1;
2161
2162         if (port->vgrp && vlan_tx_tag_present(skb)) {
2163                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2164                 swqe->vlan_tag = vlan_tx_tag_get(skb);
2165         }
2166
2167         if (netif_msg_tx_queued(port)) {
2168                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2169                 ehea_dump(swqe, 512, "swqe");
2170         }
2171
2172         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2173                 netif_stop_queue(dev);
2174                 swqe->tx_control |= EHEA_SWQE_PURGE;
2175         }
2176
2177         ehea_post_swqe(pr->qp, swqe);
2178         pr->tx_packets++;
2179
2180         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2181                 spin_lock_irqsave(&pr->netif_queue, flags);
2182                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2183                         pr->p_stats.queue_stopped++;
2184                         netif_stop_queue(dev);
2185                         pr->queue_stopped = 1;
2186                 }
2187                 spin_unlock_irqrestore(&pr->netif_queue, flags);
2188         }
2189         dev->trans_start = jiffies;
2190         spin_unlock(&pr->xmit_lock);
2191
2192         return NETDEV_TX_OK;
2193 }
2194
2195 static void ehea_vlan_rx_register(struct net_device *dev,
2196                                   struct vlan_group *grp)
2197 {
2198         struct ehea_port *port = netdev_priv(dev);
2199         struct ehea_adapter *adapter = port->adapter;
2200         struct hcp_ehea_port_cb1 *cb1;
2201         u64 hret;
2202
2203         port->vgrp = grp;
2204
2205         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2206         if (!cb1) {
2207                 ehea_error("no mem for cb1");
2208                 goto out;
2209         }
2210
2211         memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
2212
2213         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2214                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2215         if (hret != H_SUCCESS)
2216                 ehea_error("modify_ehea_port failed");
2217
2218         kfree(cb1);
2219 out:
2220         return;
2221 }
2222
2223 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2224 {
2225         struct ehea_port *port = netdev_priv(dev);
2226         struct ehea_adapter *adapter = port->adapter;
2227         struct hcp_ehea_port_cb1 *cb1;
2228         int index;
2229         u64 hret;
2230
2231         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2232         if (!cb1) {
2233                 ehea_error("no mem for cb1");
2234                 goto out;
2235         }
2236
2237         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2238                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2239         if (hret != H_SUCCESS) {
2240                 ehea_error("query_ehea_port failed");
2241                 goto out;
2242         }
2243
2244         index = (vid / 64);
2245         cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2246
2247         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2248                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2249         if (hret != H_SUCCESS)
2250                 ehea_error("modify_ehea_port failed");
2251 out:
2252         kfree(cb1);
2253         return;
2254 }
2255
2256 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2257 {
2258         struct ehea_port *port = netdev_priv(dev);
2259         struct ehea_adapter *adapter = port->adapter;
2260         struct hcp_ehea_port_cb1 *cb1;
2261         int index;
2262         u64 hret;
2263
2264         vlan_group_set_device(port->vgrp, vid, NULL);
2265
2266         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2267         if (!cb1) {
2268                 ehea_error("no mem for cb1");
2269                 goto out;
2270         }
2271
2272         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2273                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2274         if (hret != H_SUCCESS) {
2275                 ehea_error("query_ehea_port failed");
2276                 goto out;
2277         }
2278
2279         index = (vid / 64);
2280         cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2281
2282         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2283                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2284         if (hret != H_SUCCESS)
2285                 ehea_error("modify_ehea_port failed");
2286 out:
2287         kfree(cb1);
2288         return;
2289 }
2290
2291 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2292 {
2293         int ret = -EIO;
2294         u64 hret;
2295         u16 dummy16 = 0;
2296         u64 dummy64 = 0;
2297         struct hcp_modify_qp_cb0 *cb0;
2298
2299         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2300         if (!cb0) {
2301                 ret = -ENOMEM;
2302                 goto out;
2303         }
2304
2305         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2306                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2307         if (hret != H_SUCCESS) {
2308                 ehea_error("query_ehea_qp failed (1)");
2309                 goto out;
2310         }
2311
2312         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2313         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2314                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2315                                      &dummy64, &dummy64, &dummy16, &dummy16);
2316         if (hret != H_SUCCESS) {
2317                 ehea_error("modify_ehea_qp failed (1)");
2318                 goto out;
2319         }
2320
2321         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2322                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2323         if (hret != H_SUCCESS) {
2324                 ehea_error("query_ehea_qp failed (2)");
2325                 goto out;
2326         }
2327
2328         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2329         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2330                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2331                                      &dummy64, &dummy64, &dummy16, &dummy16);
2332         if (hret != H_SUCCESS) {
2333                 ehea_error("modify_ehea_qp failed (2)");
2334                 goto out;
2335         }
2336
2337         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2338                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2339         if (hret != H_SUCCESS) {
2340                 ehea_error("query_ehea_qp failed (3)");
2341                 goto out;
2342         }
2343
2344         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2345         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2346                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2347                                      &dummy64, &dummy64, &dummy16, &dummy16);
2348         if (hret != H_SUCCESS) {
2349                 ehea_error("modify_ehea_qp failed (3)");
2350                 goto out;
2351         }
2352
2353         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2354                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2355         if (hret != H_SUCCESS) {
2356                 ehea_error("query_ehea_qp failed (4)");
2357                 goto out;
2358         }
2359
2360         ret = 0;
2361 out:
2362         kfree(cb0);
2363         return ret;
2364 }
2365
2366 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2367                                int add_tx_qps)
2368 {
2369         int ret, i;
2370         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2371         enum ehea_eq_type eq_type = EHEA_EQ;
2372
2373         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2374                                    EHEA_MAX_ENTRIES_EQ, 1);
2375         if (!port->qp_eq) {
2376                 ret = -EINVAL;
2377                 ehea_error("ehea_create_eq failed (qp_eq)");
2378                 goto out_kill_eq;
2379         }
2380
2381         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2382         pr_cfg.max_entries_scq = sq_entries * 2;
2383         pr_cfg.max_entries_sq = sq_entries;
2384         pr_cfg.max_entries_rq1 = rq1_entries;
2385         pr_cfg.max_entries_rq2 = rq2_entries;
2386         pr_cfg.max_entries_rq3 = rq3_entries;
2387
2388         pr_cfg_small_rx.max_entries_rcq = 1;
2389         pr_cfg_small_rx.max_entries_scq = sq_entries;
2390         pr_cfg_small_rx.max_entries_sq = sq_entries;
2391         pr_cfg_small_rx.max_entries_rq1 = 1;
2392         pr_cfg_small_rx.max_entries_rq2 = 1;
2393         pr_cfg_small_rx.max_entries_rq3 = 1;
2394
2395         for (i = 0; i < def_qps; i++) {
2396                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2397                 if (ret)
2398                         goto out_clean_pr;
2399         }
2400         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2401                 ret = ehea_init_port_res(port, &port->port_res[i],
2402                                          &pr_cfg_small_rx, i);
2403                 if (ret)
2404                         goto out_clean_pr;
2405         }
2406
2407         return 0;
2408
2409 out_clean_pr:
2410         while (--i >= 0)
2411                 ehea_clean_portres(port, &port->port_res[i]);
2412
2413 out_kill_eq:
2414         ehea_destroy_eq(port->qp_eq);
2415         return ret;
2416 }
2417
2418 static int ehea_clean_all_portres(struct ehea_port *port)
2419 {
2420         int ret = 0;
2421         int i;
2422
2423         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2424                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2425
2426         ret |= ehea_destroy_eq(port->qp_eq);
2427
2428         return ret;
2429 }
2430
2431 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2432 {
2433         if (adapter->active_ports)
2434                 return;
2435
2436         ehea_rem_mr(&adapter->mr);
2437 }
2438
2439 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2440 {
2441         if (adapter->active_ports)
2442                 return 0;
2443
2444         return ehea_reg_kernel_mr(adapter, &adapter->mr);
2445 }
2446
2447 static int ehea_up(struct net_device *dev)
2448 {
2449         int ret, i;
2450         struct ehea_port *port = netdev_priv(dev);
2451
2452         if (port->state == EHEA_PORT_UP)
2453                 return 0;
2454
2455         down(&ehea_fw_handles.lock);
2456
2457         ret = ehea_port_res_setup(port, port->num_def_qps,
2458                                   port->num_add_tx_qps);
2459         if (ret) {
2460                 ehea_error("port_res_failed");
2461                 goto out;
2462         }
2463
2464         /* Set default QP for this port */
2465         ret = ehea_configure_port(port);
2466         if (ret) {
2467                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2468                 goto out_clean_pr;
2469         }
2470
2471         ret = ehea_reg_interrupts(dev);
2472         if (ret) {
2473                 ehea_error("reg_interrupts failed. ret:%d", ret);
2474                 goto out_clean_pr;
2475         }
2476
2477         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2478                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2479                 if (ret) {
2480                         ehea_error("activate_qp failed");
2481                         goto out_free_irqs;
2482                 }
2483         }
2484
2485         for (i = 0; i < port->num_def_qps; i++) {
2486                 ret = ehea_fill_port_res(&port->port_res[i]);
2487                 if (ret) {
2488                         ehea_error("out_free_irqs");
2489                         goto out_free_irqs;
2490                 }
2491         }
2492
2493         down(&ehea_bcmc_regs.lock);
2494
2495         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2496         if (ret) {
2497                 ret = -EIO;
2498                 goto out_free_irqs;
2499         }
2500
2501         port->state = EHEA_PORT_UP;
2502
2503         ret = 0;
2504         goto out;
2505
2506 out_free_irqs:
2507         ehea_free_interrupts(dev);
2508
2509 out_clean_pr:
2510         ehea_clean_all_portres(port);
2511 out:
2512         if (ret)
2513                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2514
2515         ehea_update_bcmc_registrations();
2516         up(&ehea_bcmc_regs.lock);
2517
2518         ehea_update_firmware_handles();
2519         up(&ehea_fw_handles.lock);
2520
2521         return ret;
2522 }
2523
2524 static void port_napi_disable(struct ehea_port *port)
2525 {
2526         int i;
2527
2528         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2529                 napi_disable(&port->port_res[i].napi);
2530 }
2531
2532 static void port_napi_enable(struct ehea_port *port)
2533 {
2534         int i;
2535
2536         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2537                 napi_enable(&port->port_res[i].napi);
2538 }
2539
2540 static int ehea_open(struct net_device *dev)
2541 {
2542         int ret;
2543         struct ehea_port *port = netdev_priv(dev);
2544
2545         down(&port->port_lock);
2546
2547         if (netif_msg_ifup(port))
2548                 ehea_info("enabling port %s", dev->name);
2549
2550         ret = ehea_up(dev);
2551         if (!ret) {
2552                 port_napi_enable(port);
2553                 netif_start_queue(dev);
2554         }
2555
2556         up(&port->port_lock);
2557
2558         return ret;
2559 }
2560
2561 static int ehea_down(struct net_device *dev)
2562 {
2563         int ret;
2564         struct ehea_port *port = netdev_priv(dev);
2565
2566         if (port->state == EHEA_PORT_DOWN)
2567                 return 0;
2568
2569         down(&ehea_bcmc_regs.lock);
2570         ehea_drop_multicast_list(dev);
2571         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2572
2573         ehea_free_interrupts(dev);
2574
2575         down(&ehea_fw_handles.lock);
2576
2577         port->state = EHEA_PORT_DOWN;
2578
2579         ehea_update_bcmc_registrations();
2580         up(&ehea_bcmc_regs.lock);
2581
2582         ret = ehea_clean_all_portres(port);
2583         if (ret)
2584                 ehea_info("Failed freeing resources for %s. ret=%i",
2585                           dev->name, ret);
2586
2587         ehea_update_firmware_handles();
2588         up(&ehea_fw_handles.lock);
2589
2590         return ret;
2591 }
2592
2593 static int ehea_stop(struct net_device *dev)
2594 {
2595         int ret;
2596         struct ehea_port *port = netdev_priv(dev);
2597
2598         if (netif_msg_ifdown(port))
2599                 ehea_info("disabling port %s", dev->name);
2600
2601         flush_scheduled_work();
2602         down(&port->port_lock);
2603         netif_stop_queue(dev);
2604         port_napi_disable(port);
2605         ret = ehea_down(dev);
2606         up(&port->port_lock);
2607         return ret;
2608 }
2609
2610 void ehea_purge_sq(struct ehea_qp *orig_qp)
2611 {
2612         struct ehea_qp qp = *orig_qp;
2613         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2614         struct ehea_swqe *swqe;
2615         int wqe_index;
2616         int i;
2617
2618         for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2619                 swqe = ehea_get_swqe(&qp, &wqe_index);
2620                 swqe->tx_control |= EHEA_SWQE_PURGE;
2621         }
2622 }
2623
2624 int ehea_stop_qps(struct net_device *dev)
2625 {
2626         struct ehea_port *port = netdev_priv(dev);
2627         struct ehea_adapter *adapter = port->adapter;
2628         struct hcp_modify_qp_cb0 *cb0;
2629         int ret = -EIO;
2630         int dret;
2631         int i;
2632         u64 hret;
2633         u64 dummy64 = 0;
2634         u16 dummy16 = 0;
2635
2636         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2637         if (!cb0) {
2638                 ret = -ENOMEM;
2639                 goto out;
2640         }
2641
2642         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2643                 struct ehea_port_res *pr =  &port->port_res[i];
2644                 struct ehea_qp *qp = pr->qp;
2645
2646                 /* Purge send queue */
2647                 ehea_purge_sq(qp);
2648
2649                 /* Disable queue pair */
2650                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2651                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2652                                             cb0);
2653                 if (hret != H_SUCCESS) {
2654                         ehea_error("query_ehea_qp failed (1)");
2655                         goto out;
2656                 }
2657
2658                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2659                 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2660
2661                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2662                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2663                                                             1), cb0, &dummy64,
2664                                              &dummy64, &dummy16, &dummy16);
2665                 if (hret != H_SUCCESS) {
2666                         ehea_error("modify_ehea_qp failed (1)");
2667                         goto out;
2668                 }
2669
2670                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2671                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2672                                             cb0);
2673                 if (hret != H_SUCCESS) {
2674                         ehea_error("query_ehea_qp failed (2)");
2675                         goto out;
2676                 }
2677
2678                 /* deregister shared memory regions */
2679                 dret = ehea_rem_smrs(pr);
2680                 if (dret) {
2681                         ehea_error("unreg shared memory region failed");
2682                         goto out;
2683                 }
2684         }
2685
2686         ret = 0;
2687 out:
2688         kfree(cb0);
2689
2690         return ret;
2691 }
2692
2693 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2694 {
2695         struct ehea_qp qp = *orig_qp;
2696         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2697         struct ehea_rwqe *rwqe;
2698         struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2699         struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2700         struct sk_buff *skb;
2701         u32 lkey = pr->recv_mr.lkey;
2702
2703
2704         int i;
2705         int index;
2706
2707         for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2708                 rwqe = ehea_get_next_rwqe(&qp, 2);
2709                 rwqe->sg_list[0].l_key = lkey;
2710                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2711                 skb = skba_rq2[index];
2712                 if (skb)
2713                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2714         }
2715
2716         for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2717                 rwqe = ehea_get_next_rwqe(&qp, 3);
2718                 rwqe->sg_list[0].l_key = lkey;
2719                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2720                 skb = skba_rq3[index];
2721                 if (skb)
2722                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2723         }
2724 }
2725
2726 int ehea_restart_qps(struct net_device *dev)
2727 {
2728         struct ehea_port *port = netdev_priv(dev);
2729         struct ehea_adapter *adapter = port->adapter;
2730         int ret = 0;
2731         int i;
2732
2733         struct hcp_modify_qp_cb0 *cb0;
2734         u64 hret;
2735         u64 dummy64 = 0;
2736         u16 dummy16 = 0;
2737
2738         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2739         if (!cb0) {
2740                 ret = -ENOMEM;
2741                 goto out;
2742         }
2743
2744         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2745                 struct ehea_port_res *pr =  &port->port_res[i];
2746                 struct ehea_qp *qp = pr->qp;
2747
2748                 ret = ehea_gen_smrs(pr);
2749                 if (ret) {
2750                         ehea_error("creation of shared memory regions failed");
2751                         goto out;
2752                 }
2753
2754                 ehea_update_rqs(qp, pr);
2755
2756                 /* Enable queue pair */
2757                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2758                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2759                                             cb0);
2760                 if (hret != H_SUCCESS) {
2761                         ehea_error("query_ehea_qp failed (1)");
2762                         goto out;
2763                 }
2764
2765                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2766                 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2767
2768                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2769                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2770                                                             1), cb0, &dummy64,
2771                                              &dummy64, &dummy16, &dummy16);
2772                 if (hret != H_SUCCESS) {
2773                         ehea_error("modify_ehea_qp failed (1)");
2774                         goto out;
2775                 }
2776
2777                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2778                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2779                                             cb0);
2780                 if (hret != H_SUCCESS) {
2781                         ehea_error("query_ehea_qp failed (2)");
2782                         goto out;
2783                 }
2784
2785                 /* refill entire queue */
2786                 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2787                 ehea_refill_rq2(pr, 0);
2788                 ehea_refill_rq3(pr, 0);
2789         }
2790 out:
2791         kfree(cb0);
2792
2793         return ret;
2794 }
2795
2796 static void ehea_reset_port(struct work_struct *work)
2797 {
2798         int ret;
2799         struct ehea_port *port =
2800                 container_of(work, struct ehea_port, reset_task);
2801         struct net_device *dev = port->netdev;
2802
2803         port->resets++;
2804         down(&port->port_lock);
2805         netif_stop_queue(dev);
2806
2807         port_napi_disable(port);
2808
2809         ehea_down(dev);
2810
2811         ret = ehea_up(dev);
2812         if (ret)
2813                 goto out;
2814
2815         ehea_set_multicast_list(dev);
2816
2817         if (netif_msg_timer(port))
2818                 ehea_info("Device %s resetted successfully", dev->name);
2819
2820         port_napi_enable(port);
2821
2822         netif_wake_queue(dev);
2823 out:
2824         up(&port->port_lock);
2825         return;
2826 }
2827
2828 static void ehea_rereg_mrs(struct work_struct *work)
2829 {
2830         int ret, i;
2831         struct ehea_adapter *adapter;
2832
2833         down(&dlpar_mem_lock);
2834         ehea_info("LPAR memory enlarged - re-initializing driver");
2835
2836         list_for_each_entry(adapter, &adapter_list, list)
2837                 if (adapter->active_ports) {
2838                         /* Shutdown all ports */
2839                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2840                                 struct ehea_port *port = adapter->port[i];
2841
2842                                 if (port) {
2843                                         struct net_device *dev = port->netdev;
2844
2845                                         if (dev->flags & IFF_UP) {
2846                                                 down(&port->port_lock);
2847                                                 netif_stop_queue(dev);
2848                                                 ret = ehea_stop_qps(dev);
2849                                                 if (ret) {
2850                                                         up(&port->port_lock);
2851                                                         goto out;
2852                                                 }
2853                                                 port_napi_disable(port);
2854                                                 up(&port->port_lock);
2855                                         }
2856                                 }
2857                         }
2858
2859                         /* Unregister old memory region */
2860                         ret = ehea_rem_mr(&adapter->mr);
2861                         if (ret) {
2862                                 ehea_error("unregister MR failed - driver"
2863                                            " inoperable!");
2864                                 goto out;
2865                         }
2866                 }
2867
2868         ehea_destroy_busmap();
2869         ret = ehea_create_busmap();
2870         if (ret) {
2871                 ehea_error("creating ehea busmap failed");
2872                 goto out;
2873         }
2874
2875         clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2876
2877         list_for_each_entry(adapter, &adapter_list, list)
2878                 if (adapter->active_ports) {
2879                         /* Register new memory region */
2880                         ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2881                         if (ret) {
2882                                 ehea_error("register MR failed - driver"
2883                                            " inoperable!");
2884                                 goto out;
2885                         }
2886
2887                         /* Restart all ports */
2888                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2889                                 struct ehea_port *port = adapter->port[i];
2890
2891                                 if (port) {
2892                                         struct net_device *dev = port->netdev;
2893
2894                                         if (dev->flags & IFF_UP) {
2895                                                 down(&port->port_lock);
2896                                                 port_napi_enable(port);
2897                                                 ret = ehea_restart_qps(dev);
2898                                                 if (!ret)
2899                                                         netif_wake_queue(dev);
2900                                                 up(&port->port_lock);
2901                                         }
2902                                 }
2903                         }
2904                 }
2905        up(&dlpar_mem_lock);
2906        ehea_info("re-initializing driver complete");
2907 out:
2908         return;
2909 }
2910
2911 static void ehea_tx_watchdog(struct net_device *dev)
2912 {
2913         struct ehea_port *port = netdev_priv(dev);
2914
2915         if (netif_carrier_ok(dev) &&
2916             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2917                 schedule_work(&port->reset_task);
2918 }
2919
2920 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2921 {
2922         struct hcp_query_ehea *cb;
2923         u64 hret;
2924         int ret;
2925
2926         cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2927         if (!cb) {
2928                 ret = -ENOMEM;
2929                 goto out;
2930         }
2931
2932         hret = ehea_h_query_ehea(adapter->handle, cb);
2933
2934         if (hret != H_SUCCESS) {
2935                 ret = -EIO;
2936                 goto out_herr;
2937         }
2938
2939         adapter->max_mc_mac = cb->max_mc_mac - 1;
2940         ret = 0;
2941
2942 out_herr:
2943         kfree(cb);
2944 out:
2945         return ret;
2946 }
2947
2948 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2949 {
2950         struct hcp_ehea_port_cb4 *cb4;
2951         u64 hret;
2952         int ret = 0;
2953
2954         *jumbo = 0;
2955
2956         /* (Try to) enable *jumbo frames */
2957         cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2958         if (!cb4) {
2959                 ehea_error("no mem for cb4");
2960                 ret = -ENOMEM;
2961                 goto out;
2962         } else {
2963                 hret = ehea_h_query_ehea_port(port->adapter->handle,
2964                                               port->logical_port_id,
2965                                               H_PORT_CB4,
2966                                               H_PORT_CB4_JUMBO, cb4);
2967                 if (hret == H_SUCCESS) {
2968                         if (cb4->jumbo_frame)
2969                                 *jumbo = 1;
2970                         else {
2971                                 cb4->jumbo_frame = 1;
2972                                 hret = ehea_h_modify_ehea_port(port->adapter->
2973                                                                handle,
2974                                                                port->
2975                                                                logical_port_id,
2976                                                                H_PORT_CB4,
2977                                                                H_PORT_CB4_JUMBO,
2978                                                                cb4);
2979                                 if (hret == H_SUCCESS)
2980                                         *jumbo = 1;
2981                         }
2982                 } else
2983                         ret = -EINVAL;
2984
2985                 kfree(cb4);
2986         }
2987 out:
2988         return ret;
2989 }
2990
2991 static ssize_t ehea_show_port_id(struct device *dev,
2992                                  struct device_attribute *attr, char *buf)
2993 {
2994         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2995         return sprintf(buf, "%d", port->logical_port_id);
2996 }
2997
2998 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2999                    NULL);
3000
3001 static void __devinit logical_port_release(struct device *dev)
3002 {
3003         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3004         of_node_put(port->ofdev.node);
3005 }
3006
3007 static struct device *ehea_register_port(struct ehea_port *port,
3008                                          struct device_node *dn)
3009 {
3010         int ret;
3011
3012         port->ofdev.node = of_node_get(dn);
3013         port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3014         port->ofdev.dev.bus = &ibmebus_bus_type;
3015
3016         sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
3017         port->ofdev.dev.release = logical_port_release;
3018
3019         ret = of_device_register(&port->ofdev);
3020         if (ret) {
3021                 ehea_error("failed to register device. ret=%d", ret);
3022                 goto out;
3023         }
3024
3025         ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3026         if (ret) {
3027                 ehea_error("failed to register attributes, ret=%d", ret);
3028                 goto out_unreg_of_dev;
3029         }
3030
3031         return &port->ofdev.dev;
3032
3033 out_unreg_of_dev:
3034         of_device_unregister(&port->ofdev);
3035 out:
3036         return NULL;
3037 }
3038
3039 static void ehea_unregister_port(struct ehea_port *port)
3040 {
3041         device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3042         of_device_unregister(&port->ofdev);
3043 }
3044
3045 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3046                                          u32 logical_port_id,
3047                                          struct device_node *dn)
3048 {
3049         int ret;
3050         struct net_device *dev;
3051         struct ehea_port *port;
3052         struct device *port_dev;
3053         int jumbo;
3054
3055         /* allocate memory for the port structures */
3056         dev = alloc_etherdev(sizeof(struct ehea_port));
3057
3058         if (!dev) {
3059                 ehea_error("no mem for net_device");
3060                 ret = -ENOMEM;
3061                 goto out_err;
3062         }
3063
3064         port = netdev_priv(dev);
3065
3066         sema_init(&port->port_lock, 1);
3067         port->state = EHEA_PORT_DOWN;
3068         port->sig_comp_iv = sq_entries / 10;
3069
3070         port->adapter = adapter;
3071         port->netdev = dev;
3072         port->logical_port_id = logical_port_id;
3073
3074         port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3075
3076         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3077         if (!port->mc_list) {
3078                 ret = -ENOMEM;
3079                 goto out_free_ethdev;
3080         }
3081
3082         INIT_LIST_HEAD(&port->mc_list->list);
3083
3084         ret = ehea_sense_port_attr(port);
3085         if (ret)
3086                 goto out_free_mc_list;
3087
3088         port_dev = ehea_register_port(port, dn);
3089         if (!port_dev)
3090                 goto out_free_mc_list;
3091
3092         SET_NETDEV_DEV(dev, port_dev);
3093
3094         /* initialize net_device structure */
3095         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3096
3097         dev->open = ehea_open;
3098 #ifdef CONFIG_NET_POLL_CONTROLLER
3099         dev->poll_controller = ehea_netpoll;
3100 #endif
3101         dev->stop = ehea_stop;
3102         dev->hard_start_xmit = ehea_start_xmit;
3103         dev->get_stats = ehea_get_stats;
3104         dev->set_multicast_list = ehea_set_multicast_list;
3105         dev->set_mac_address = ehea_set_mac_addr;
3106         dev->change_mtu = ehea_change_mtu;
3107         dev->vlan_rx_register = ehea_vlan_rx_register;
3108         dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
3109         dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
3110         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3111                       | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
3112                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3113                       | NETIF_F_LLTX;
3114         dev->tx_timeout = &ehea_tx_watchdog;
3115         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3116
3117         INIT_WORK(&port->reset_task, ehea_reset_port);
3118         ehea_set_ethtool_ops(dev);
3119
3120         ret = register_netdev(dev);
3121         if (ret) {
3122                 ehea_error("register_netdev failed. ret=%d", ret);
3123                 goto out_unreg_port;
3124         }
3125
3126         port->lro_max_aggr = lro_max_aggr;
3127
3128         ret = ehea_get_jumboframe_status(port, &jumbo);
3129         if (ret)
3130                 ehea_error("failed determining jumbo frame status for %s",
3131                            port->netdev->name);
3132
3133         ehea_info("%s: Jumbo frames are %sabled", dev->name,
3134                   jumbo == 1 ? "en" : "dis");
3135
3136         adapter->active_ports++;
3137
3138         return port;
3139
3140 out_unreg_port:
3141         ehea_unregister_port(port);
3142
3143 out_free_mc_list:
3144         kfree(port->mc_list);
3145
3146 out_free_ethdev:
3147         free_netdev(dev);
3148
3149 out_err:
3150         ehea_error("setting up logical port with id=%d failed, ret=%d",
3151                    logical_port_id, ret);
3152         return NULL;
3153 }
3154
3155 static void ehea_shutdown_single_port(struct ehea_port *port)
3156 {
3157         unregister_netdev(port->netdev);
3158         ehea_unregister_port(port);
3159         kfree(port->mc_list);
3160         free_netdev(port->netdev);
3161         port->adapter->active_ports--;
3162 }
3163
3164 static int ehea_setup_ports(struct ehea_adapter *adapter)
3165 {
3166         struct device_node *lhea_dn;
3167         struct device_node *eth_dn = NULL;
3168
3169         const u32 *dn_log_port_id;
3170         int i = 0;
3171
3172         lhea_dn = adapter->ofdev->node;
3173         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3174
3175                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3176                                                  NULL);
3177                 if (!dn_log_port_id) {
3178                         ehea_error("bad device node: eth_dn name=%s",
3179                                    eth_dn->full_name);
3180                         continue;
3181                 }
3182
3183                 if (ehea_add_adapter_mr(adapter)) {
3184                         ehea_error("creating MR failed");
3185                         of_node_put(eth_dn);
3186                         return -EIO;
3187                 }
3188
3189                 adapter->port[i] = ehea_setup_single_port(adapter,
3190                                                           *dn_log_port_id,
3191                                                           eth_dn);
3192                 if (adapter->port[i])
3193                         ehea_info("%s -> logical port id #%d",
3194                                   adapter->port[i]->netdev->name,
3195                                   *dn_log_port_id);
3196                 else
3197                         ehea_remove_adapter_mr(adapter);
3198
3199                 i++;
3200         };
3201         return 0;
3202 }
3203
3204 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3205                                            u32 logical_port_id)
3206 {
3207         struct device_node *lhea_dn;
3208         struct device_node *eth_dn = NULL;
3209         const u32 *dn_log_port_id;
3210
3211         lhea_dn = adapter->ofdev->node;
3212         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3213
3214                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3215                                                  NULL);
3216                 if (dn_log_port_id)
3217                         if (*dn_log_port_id == logical_port_id)
3218                                 return eth_dn;
3219         };
3220
3221         return NULL;
3222 }
3223
3224 static ssize_t ehea_probe_port(struct device *dev,
3225                                struct device_attribute *attr,
3226                                const char *buf, size_t count)
3227 {
3228         struct ehea_adapter *adapter = dev->driver_data;
3229         struct ehea_port *port;
3230         struct device_node *eth_dn = NULL;
3231         int i;
3232
3233         u32 logical_port_id;
3234
3235         sscanf(buf, "%d", &logical_port_id);
3236
3237         port = ehea_get_port(adapter, logical_port_id);
3238
3239         if (port) {
3240                 ehea_info("adding port with logical port id=%d failed. port "
3241                           "already configured as %s.", logical_port_id,
3242                           port->netdev->name);
3243                 return -EINVAL;
3244         }
3245
3246         eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3247
3248         if (!eth_dn) {
3249                 ehea_info("no logical port with id %d found", logical_port_id);
3250                 return -EINVAL;
3251         }
3252
3253         if (ehea_add_adapter_mr(adapter)) {
3254                 ehea_error("creating MR failed");
3255                 return -EIO;
3256         }
3257
3258         port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3259
3260         of_node_put(eth_dn);
3261
3262         if (port) {
3263                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3264                         if (!adapter->port[i]) {
3265                                 adapter->port[i] = port;
3266                                 break;
3267                         }
3268
3269                 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3270                           logical_port_id);
3271         } else {
3272                 ehea_remove_adapter_mr(adapter);
3273                 return -EIO;
3274         }
3275
3276         return (ssize_t) count;
3277 }
3278
3279 static ssize_t ehea_remove_port(struct device *dev,
3280                                 struct device_attribute *attr,
3281                                 const char *buf, size_t count)
3282 {
3283         struct ehea_adapter *adapter = dev->driver_data;
3284         struct ehea_port *port;
3285         int i;
3286         u32 logical_port_id;
3287
3288         sscanf(buf, "%d", &logical_port_id);
3289
3290         port = ehea_get_port(adapter, logical_port_id);
3291
3292         if (port) {
3293                 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3294                           logical_port_id);
3295
3296                 ehea_shutdown_single_port(port);
3297
3298                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3299                         if (adapter->port[i] == port) {
3300                                 adapter->port[i] = NULL;
3301                                 break;
3302                         }
3303         } else {
3304                 ehea_error("removing port with logical port id=%d failed. port "
3305                            "not configured.", logical_port_id);
3306                 return -EINVAL;
3307         }
3308
3309         ehea_remove_adapter_mr(adapter);
3310
3311         return (ssize_t) count;
3312 }
3313
3314 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3315 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3316
3317 int ehea_create_device_sysfs(struct of_device *dev)
3318 {
3319         int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3320         if (ret)
3321                 goto out;
3322
3323         ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3324 out:
3325         return ret;
3326 }
3327
3328 void ehea_remove_device_sysfs(struct of_device *dev)
3329 {
3330         device_remove_file(&dev->dev, &dev_attr_probe_port);
3331         device_remove_file(&dev->dev, &dev_attr_remove_port);
3332 }
3333
3334 static int __devinit ehea_probe_adapter(struct of_device *dev,
3335                                         const struct of_device_id *id)
3336 {
3337         struct ehea_adapter *adapter;
3338         const u64 *adapter_handle;
3339         int ret;
3340
3341         if (!dev || !dev->node) {
3342                 ehea_error("Invalid ibmebus device probed");
3343                 return -EINVAL;
3344         }
3345         down(&ehea_fw_handles.lock);
3346
3347         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3348         if (!adapter) {
3349                 ret = -ENOMEM;
3350                 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3351                 goto out;
3352         }
3353
3354         list_add(&adapter->list, &adapter_list);
3355
3356         adapter->ofdev = dev;
3357
3358         adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
3359                                          NULL);
3360         if (adapter_handle)
3361                 adapter->handle = *adapter_handle;
3362
3363         if (!adapter->handle) {
3364                 dev_err(&dev->dev, "failed getting handle for adapter"
3365                         " '%s'\n", dev->node->full_name);
3366                 ret = -ENODEV;
3367                 goto out_free_ad;
3368         }
3369
3370         adapter->pd = EHEA_PD_ID;
3371
3372         dev->dev.driver_data = adapter;
3373
3374
3375         /* initialize adapter and ports */
3376         /* get adapter properties */
3377         ret = ehea_sense_adapter_attr(adapter);
3378         if (ret) {
3379                 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3380                 goto out_free_ad;
3381         }
3382
3383         adapter->neq = ehea_create_eq(adapter,
3384                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3385         if (!adapter->neq) {
3386                 ret = -EIO;
3387                 dev_err(&dev->dev, "NEQ creation failed\n");
3388                 goto out_free_ad;
3389         }
3390
3391         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3392                      (unsigned long)adapter);
3393
3394         ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3395                                   ehea_interrupt_neq, IRQF_DISABLED,
3396                                   "ehea_neq", adapter);
3397         if (ret) {
3398                 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3399                 goto out_kill_eq;
3400         }
3401
3402         ret = ehea_create_device_sysfs(dev);
3403         if (ret)
3404                 goto out_free_irq;
3405
3406         ret = ehea_setup_ports(adapter);
3407         if (ret) {
3408                 dev_err(&dev->dev, "setup_ports failed\n");
3409                 goto out_rem_dev_sysfs;
3410         }
3411
3412         ret = 0;
3413         goto out;
3414
3415 out_rem_dev_sysfs:
3416         ehea_remove_device_sysfs(dev);
3417
3418 out_free_irq:
3419         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3420
3421 out_kill_eq:
3422         ehea_destroy_eq(adapter->neq);
3423
3424 out_free_ad:
3425         kfree(adapter);
3426
3427 out:
3428         ehea_update_firmware_handles();
3429         up(&ehea_fw_handles.lock);
3430         return ret;
3431 }
3432
3433 static int __devexit ehea_remove(struct of_device *dev)
3434 {
3435         struct ehea_adapter *adapter = dev->dev.driver_data;
3436         int i;
3437
3438         for (i = 0; i < EHEA_MAX_PORTS; i++)
3439                 if (adapter->port[i]) {
3440                         ehea_shutdown_single_port(adapter->port[i]);
3441                         adapter->port[i] = NULL;
3442                 }
3443
3444         ehea_remove_device_sysfs(dev);
3445
3446         flush_scheduled_work();
3447
3448         down(&ehea_fw_handles.lock);
3449
3450         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3451         tasklet_kill(&adapter->neq_tasklet);
3452
3453         ehea_destroy_eq(adapter->neq);
3454         ehea_remove_adapter_mr(adapter);
3455         list_del(&adapter->list);
3456         kfree(adapter);
3457
3458         ehea_update_firmware_handles();
3459         up(&ehea_fw_handles.lock);
3460
3461         return 0;
3462 }
3463
3464 void ehea_crash_handler(void)
3465 {
3466         int i;
3467
3468         if (ehea_fw_handles.arr)
3469                 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3470                         ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3471                                              ehea_fw_handles.arr[i].fwh,
3472                                              FORCE_FREE);
3473
3474         if (ehea_bcmc_regs.arr)
3475                 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3476                         ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3477                                               ehea_bcmc_regs.arr[i].port_id,
3478                                               ehea_bcmc_regs.arr[i].reg_type,
3479                                               ehea_bcmc_regs.arr[i].macaddr,
3480                                               0, H_DEREG_BCMC);
3481 }
3482
3483 static int ehea_reboot_notifier(struct notifier_block *nb,
3484                                 unsigned long action, void *unused)
3485 {
3486         if (action == SYS_RESTART) {
3487                 ehea_info("Reboot: freeing all eHEA resources");
3488                 ibmebus_unregister_driver(&ehea_driver);
3489         }
3490         return NOTIFY_DONE;
3491 }
3492
3493 static struct notifier_block ehea_reboot_nb = {
3494         .notifier_call = ehea_reboot_notifier,
3495 };
3496
3497 static int check_module_parm(void)
3498 {
3499         int ret = 0;
3500
3501         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3502             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3503                 ehea_info("Bad parameter: rq1_entries");
3504                 ret = -EINVAL;
3505         }
3506         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3507             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3508                 ehea_info("Bad parameter: rq2_entries");
3509                 ret = -EINVAL;
3510         }
3511         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3512             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3513                 ehea_info("Bad parameter: rq3_entries");
3514                 ret = -EINVAL;
3515         }
3516         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3517             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3518                 ehea_info("Bad parameter: sq_entries");
3519                 ret = -EINVAL;
3520         }
3521
3522         return ret;
3523 }
3524
3525 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3526                                       char *buf)
3527 {
3528         return sprintf(buf, "%d", EHEA_CAPABILITIES);
3529 }
3530
3531 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3532                    ehea_show_capabilities, NULL);
3533
3534 int __init ehea_module_init(void)
3535 {
3536         int ret;
3537
3538         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3539                DRV_VERSION);
3540
3541
3542         INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3543         memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3544         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3545
3546         sema_init(&dlpar_mem_lock, 1);
3547         sema_init(&ehea_fw_handles.lock, 1);
3548         sema_init(&ehea_bcmc_regs.lock, 1);
3549
3550         ret = check_module_parm();
3551         if (ret)
3552                 goto out;
3553
3554         ret = ehea_create_busmap();
3555         if (ret)
3556                 goto out;
3557
3558         ret = register_reboot_notifier(&ehea_reboot_nb);
3559         if (ret)
3560                 ehea_info("failed registering reboot notifier");
3561
3562         ret = crash_shutdown_register(&ehea_crash_handler);
3563         if (ret)
3564                 ehea_info("failed registering crash handler");
3565
3566         ret = ibmebus_register_driver(&ehea_driver);
3567         if (ret) {
3568                 ehea_error("failed registering eHEA device driver on ebus");
3569                 goto out2;
3570         }
3571
3572         ret = driver_create_file(&ehea_driver.driver,
3573                                  &driver_attr_capabilities);
3574         if (ret) {
3575                 ehea_error("failed to register capabilities attribute, ret=%d",
3576                            ret);
3577                 goto out3;
3578         }
3579
3580         return ret;
3581
3582 out3:
3583         ibmebus_unregister_driver(&ehea_driver);
3584 out2:
3585         unregister_reboot_notifier(&ehea_reboot_nb);
3586         crash_shutdown_unregister(&ehea_crash_handler);
3587 out:
3588         return ret;
3589 }
3590
3591 static void __exit ehea_module_exit(void)
3592 {
3593         int ret;
3594
3595         flush_scheduled_work();
3596         driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3597         ibmebus_unregister_driver(&ehea_driver);
3598         unregister_reboot_notifier(&ehea_reboot_nb);
3599         ret = crash_shutdown_unregister(&ehea_crash_handler);
3600         if (ret)
3601                 ehea_info("failed unregistering crash handler");
3602         kfree(ehea_fw_handles.arr);
3603         kfree(ehea_bcmc_regs.arr);
3604         ehea_destroy_busmap();
3605 }
3606
3607 module_init(ehea_module_init);
3608 module_exit(ehea_module_exit);