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   1 /*
   2  *  linux/drivers/net/ehea/ehea_main.c
   3  *
   4  *  eHEA ethernet device driver for IBM eServer System p
   5  *
   6  *  (C) Copyright IBM Corp. 2006
   7  *
   8  *  Authors:
   9  *       Christoph Raisch <raisch@de.ibm.com>
  10  *       Jan-Bernd Themann <themann@de.ibm.com>
  11  *       Thomas Klein <tklein@de.ibm.com>
  12  *
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2, or (at your option)
  17  * any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/in.h>
  30 #include <linux/ip.h>
  31 #include <linux/tcp.h>
  32 #include <linux/udp.h>
  33 #include <linux/if.h>
  34 #include <linux/list.h>
  35 #include <linux/if_ether.h>
  36 #include <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                 if (nr_of_wqes > 0)
 353                         pr->rq1_skba.index = index;
 354                 pr->rq1_skba.os_skbs = fill_wqes;
 355                 return;
 356         }
 357
 358         for (i = 0; i < fill_wqes; i++) {
 359                 if (!skb_arr_rq1[index]) {
 360                         skb_arr_rq1[index] = netdev_alloc_skb(dev,
 361                                                               EHEA_L_PKT_SIZE);
 362                         if (!skb_arr_rq1[index]) {
 363                                 pr->rq1_skba.os_skbs = fill_wqes - i;
 364                                 ehea_error("%s: no mem for skb/%d wqes filled",
 365                                            dev->name, i);
 366                                 break;
 367                         }
 368                 }
 369                 index--;
 370                 index &= max_index_mask;
 371                 adder++;
 372         }
 373
 374         if (adder == 0)
 375                 return;
 376
 377         /* Ring doorbell */
 378         ehea_update_rq1a(pr->qp, adder);
 379 }
 380
 381 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 382 {
 383         int ret = 0;
 384         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 385         struct net_device *dev = pr->port->netdev;
 386         int i;
 387
 388         for (i = 0; i < pr->rq1_skba.len; i++) {
 389                 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
 390                 if (!skb_arr_rq1[i]) {
 391                         ehea_error("%s: no mem for skb/%d wqes filled",
 392                                    dev->name, i);
 393                         ret = -ENOMEM;
 394                         goto out;
 395                 }
 396         }
 397         /* Ring doorbell */
 398         ehea_update_rq1a(pr->qp, nr_rq1a);
 399 out:
 400         return ret;
 401 }
 402
 403 static int ehea_refill_rq_def(struct ehea_port_res *pr,
 404                               struct ehea_q_skb_arr *q_skba, int rq_nr,
 405                               int num_wqes, int wqe_type, int packet_size)
 406 {
 407         struct net_device *dev = pr->port->netdev;
 408         struct ehea_qp *qp = pr->qp;
 409         struct sk_buff **skb_arr = q_skba->arr;
 410         struct ehea_rwqe *rwqe;
 411         int i, index, max_index_mask, fill_wqes;
 412         int adder = 0;
 413         int ret = 0;
 414
 415         fill_wqes = q_skba->os_skbs + num_wqes;
 416         q_skba->os_skbs = 0;
 417
 418         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 419                 q_skba->os_skbs = fill_wqes;
 420                 return ret;
 421         }
 422
 423         index = q_skba->index;
 424         max_index_mask = q_skba->len - 1;
 425         for (i = 0; i < fill_wqes; i++) {
 426                 u64 tmp_addr;
 427                 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
 428                 if (!skb) {
 429                         ehea_error("%s: no mem for skb/%d wqes filled",
 430                                    pr->port->netdev->name, i);
 431                         q_skba->os_skbs = fill_wqes - i;
 432                         ret = -ENOMEM;
 433                         break;
 434                 }
 435                 skb_reserve(skb, NET_IP_ALIGN);
 436
 437                 skb_arr[index] = skb;
 438                 tmp_addr = ehea_map_vaddr(skb->data);
 439                 if (tmp_addr == -1) {
 440                         dev_kfree_skb(skb);
 441                         q_skba->os_skbs = fill_wqes - i;
 442                         ret = 0;
 443                         break;
 444                 }
 445
 446                 rwqe = ehea_get_next_rwqe(qp, rq_nr);
 447                 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
 448                             | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
 449                 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
 450                 rwqe->sg_list[0].vaddr = tmp_addr;
 451                 rwqe->sg_list[0].len = packet_size;
 452                 rwqe->data_segments = 1;
 453
 454                 index++;
 455                 index &= max_index_mask;
 456                 adder++;
 457         }
 458
 459         q_skba->index = index;
 460         if (adder == 0)
 461                 goto out;
 462
 463         /* Ring doorbell */
 464         iosync();
 465         if (rq_nr == 2)
 466                 ehea_update_rq2a(pr->qp, adder);
 467         else
 468                 ehea_update_rq3a(pr->qp, adder);
 469 out:
 470         return ret;
 471 }
 472
 473
 474 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
 475 {
 476         return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
 477                                   nr_of_wqes, EHEA_RWQE2_TYPE,
 478                                   EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
 479 }
 480
 481
 482 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
 483 {
 484         return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
 485                                   nr_of_wqes, EHEA_RWQE3_TYPE,
 486                                   EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
 487 }
 488
 489 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
 490 {
 491         *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
 492         if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
 493                 return 0;
 494         if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
 495             (cqe->header_length == 0))
 496                 return 0;
 497         return -EINVAL;
 498 }
 499
 500 static inline void ehea_fill_skb(struct net_device *dev,
 501                                  struct sk_buff *skb, struct ehea_cqe *cqe)
 502 {
 503         int length = cqe->num_bytes_transfered - 4;     /*remove CRC */
 504
 505         skb_put(skb, length);
 506         skb->ip_summed = CHECKSUM_UNNECESSARY;
 507         skb->protocol = eth_type_trans(skb, dev);
 508 }
 509
 510 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
 511                                                int arr_len,
 512                                                struct ehea_cqe *cqe)
 513 {
 514         int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 515         struct sk_buff *skb;
 516         void *pref;
 517         int x;
 518
 519         x = skb_index + 1;
 520         x &= (arr_len - 1);
 521
 522         pref = skb_array[x];
 523         prefetchw(pref);
 524         prefetchw(pref + EHEA_CACHE_LINE);
 525
 526         pref = (skb_array[x]->data);
 527         prefetch(pref);
 528         prefetch(pref + EHEA_CACHE_LINE);
 529         prefetch(pref + EHEA_CACHE_LINE * 2);
 530         prefetch(pref + EHEA_CACHE_LINE * 3);
 531         skb = skb_array[skb_index];
 532         skb_array[skb_index] = NULL;
 533         return skb;
 534 }
 535
 536 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
 537                                                   int arr_len, int wqe_index)
 538 {
 539         struct sk_buff *skb;
 540         void *pref;
 541         int x;
 542
 543         x = wqe_index + 1;
 544         x &= (arr_len - 1);
 545
 546         pref = skb_array[x];
 547         prefetchw(pref);
 548         prefetchw(pref + EHEA_CACHE_LINE);
 549
 550         pref = (skb_array[x]->data);
 551         prefetchw(pref);
 552         prefetchw(pref + EHEA_CACHE_LINE);
 553
 554         skb = skb_array[wqe_index];
 555         skb_array[wqe_index] = NULL;
 556         return skb;
 557 }
 558
 559 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
 560                                  struct ehea_cqe *cqe, int *processed_rq2,
 561                                  int *processed_rq3)
 562 {
 563         struct sk_buff *skb;
 564
 565         if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
 566                 pr->p_stats.err_tcp_cksum++;
 567         if (cqe->status & EHEA_CQE_STAT_ERR_IP)
 568                 pr->p_stats.err_ip_cksum++;
 569         if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
 570                 pr->p_stats.err_frame_crc++;
 571
 572         if (rq == 2) {
 573                 *processed_rq2 += 1;
 574                 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
 575                 dev_kfree_skb(skb);
 576         } else if (rq == 3) {
 577                 *processed_rq3 += 1;
 578                 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
 579                 dev_kfree_skb(skb);
 580         }
 581
 582         if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
 583                 if (netif_msg_rx_err(pr->port)) {
 584                         ehea_error("Critical receive error for QP %d. "
 585                                    "Resetting port.", pr->qp->init_attr.qp_nr);
 586                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 587                 }
 588                 schedule_work(&pr->port->reset_task);
 589                 return 1;
 590         }
 591
 592         return 0;
 593 }
 594
 595 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
 596                        void **tcph, u64 *hdr_flags, void *priv)
 597 {
 598         struct ehea_cqe *cqe = priv;
 599         unsigned int ip_len;
 600         struct iphdr *iph;
 601
 602         /* non tcp/udp packets */
 603         if (!cqe->header_length)
 604                 return -1;
 605
 606         /* non tcp packet */
 607         skb_reset_network_header(skb);
 608         iph = ip_hdr(skb);
 609         if (iph->protocol != IPPROTO_TCP)
 610                 return -1;
 611
 612         ip_len = ip_hdrlen(skb);
 613         skb_set_transport_header(skb, ip_len);
 614         *tcph = tcp_hdr(skb);
 615
 616         /* check if ip header and tcp header are complete */
 617         if (iph->tot_len < ip_len + tcp_hdrlen(skb))
 618                 return -1;
 619
 620         *hdr_flags = LRO_IPV4 | LRO_TCP;
 621         *iphdr = iph;
 622
 623         return 0;
 624 }
 625
 626 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
 627                           struct sk_buff *skb)
 628 {
 629         int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
 630                 && pr->port->vgrp;
 631
 632         if (use_lro) {
 633                 if (vlan_extracted)
 634                         lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
 635                                                      pr->port->vgrp,
 636                                                      cqe->vlan_tag,
 637                                                      cqe);
 638                 else
 639                         lro_receive_skb(&pr->lro_mgr, skb, cqe);
 640         } else {
 641                 if (vlan_extracted)
 642                         vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
 643                                                  cqe->vlan_tag);
 644                 else
 645                         netif_receive_skb(skb);
 646         }
 647 }
 648
 649 static int ehea_proc_rwqes(struct net_device *dev,
 650                            struct ehea_port_res *pr,
 651                            int budget)
 652 {
 653         struct ehea_port *port = pr->port;
 654         struct ehea_qp *qp = pr->qp;
 655         struct ehea_cqe *cqe;
 656         struct sk_buff *skb;
 657         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 658         struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
 659         struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
 660         int skb_arr_rq1_len = pr->rq1_skba.len;
 661         int skb_arr_rq2_len = pr->rq2_skba.len;
 662         int skb_arr_rq3_len = pr->rq3_skba.len;
 663         int processed, processed_rq1, processed_rq2, processed_rq3;
 664         int wqe_index, last_wqe_index, rq, port_reset;
 665
 666         processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
 667         last_wqe_index = 0;
 668
 669         cqe = ehea_poll_rq1(qp, &wqe_index);
 670         while ((processed < budget) && cqe) {
 671                 ehea_inc_rq1(qp);
 672                 processed_rq1++;
 673                 processed++;
 674                 if (netif_msg_rx_status(port))
 675                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 676
 677                 last_wqe_index = wqe_index;
 678                 rmb();
 679                 if (!ehea_check_cqe(cqe, &rq)) {
 680                         if (rq == 1) {
 681                                 /* LL RQ1 */
 682                                 skb = get_skb_by_index_ll(skb_arr_rq1,
 683                                                           skb_arr_rq1_len,
 684                                                           wqe_index);
 685                                 if (unlikely(!skb)) {
 686                                         if (netif_msg_rx_err(port))
 687                                                 ehea_error("LL rq1: skb=NULL");
 688
 689                                         skb = netdev_alloc_skb(dev,
 690                                                                EHEA_L_PKT_SIZE);
 691                                         if (!skb)
 692                                                 break;
 693                                 }
 694                                 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
 695                                                  cqe->num_bytes_transfered - 4);
 696                                 ehea_fill_skb(dev, skb, cqe);
 697                         } else if (rq == 2) {
 698                                 /* RQ2 */
 699                                 skb = get_skb_by_index(skb_arr_rq2,
 700                                                        skb_arr_rq2_len, cqe);
 701                                 if (unlikely(!skb)) {
 702                                         if (netif_msg_rx_err(port))
 703                                                 ehea_error("rq2: skb=NULL");
 704                                         break;
 705                                 }
 706                                 ehea_fill_skb(dev, skb, cqe);
 707                                 processed_rq2++;
 708                         } else {
 709                                 /* RQ3 */
 710                                 skb = get_skb_by_index(skb_arr_rq3,
 711                                                        skb_arr_rq3_len, cqe);
 712                                 if (unlikely(!skb)) {
 713                                         if (netif_msg_rx_err(port))
 714                                                 ehea_error("rq3: skb=NULL");
 715                                         break;
 716                                 }
 717                                 ehea_fill_skb(dev, skb, cqe);
 718                                 processed_rq3++;
 719                         }
 720
 721                         ehea_proc_skb(pr, cqe, skb);
 722                         dev->last_rx = jiffies;
 723                 } else {
 724                         pr->p_stats.poll_receive_errors++;
 725                         port_reset = ehea_treat_poll_error(pr, rq, cqe,
 726                                                            &processed_rq2,
 727                                                            &processed_rq3);
 728                         if (port_reset)
 729                                 break;
 730                 }
 731                 cqe = ehea_poll_rq1(qp, &wqe_index);
 732         }
 733         if (use_lro)
 734                 lro_flush_all(&pr->lro_mgr);
 735
 736         pr->rx_packets += processed;
 737
 738         ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
 739         ehea_refill_rq2(pr, processed_rq2);
 740         ehea_refill_rq3(pr, processed_rq3);
 741
 742         return processed;
 743 }
 744
 745 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
 746 {
 747         struct sk_buff *skb;
 748         struct ehea_cq *send_cq = pr->send_cq;
 749         struct ehea_cqe *cqe;
 750         int quota = my_quota;
 751         int cqe_counter = 0;
 752         int swqe_av = 0;
 753         int index;
 754         unsigned long flags;
 755
 756         cqe = ehea_poll_cq(send_cq);
 757         while (cqe && (quota > 0)) {
 758                 ehea_inc_cq(send_cq);
 759
 760                 cqe_counter++;
 761                 rmb();
 762                 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
 763                         ehea_error("Send Completion Error: Resetting port");
 764                         if (netif_msg_tx_err(pr->port))
 765                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
 766                         schedule_work(&pr->port->reset_task);
 767                         break;
 768                 }
 769
 770                 if (netif_msg_tx_done(pr->port))
 771                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 772
 773                 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
 774                            == EHEA_SWQE2_TYPE)) {
 775
 776                         index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 777                         skb = pr->sq_skba.arr[index];
 778                         dev_kfree_skb(skb);
 779                         pr->sq_skba.arr[index] = NULL;
 780                 }
 781
 782                 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
 783                 quota--;
 784
 785                 cqe = ehea_poll_cq(send_cq);
 786         };
 787
 788         ehea_update_feca(send_cq, cqe_counter);
 789         atomic_add(swqe_av, &pr->swqe_avail);
 790
 791         spin_lock_irqsave(&pr->netif_queue, flags);
 792
 793         if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
 794                                   >= pr->swqe_refill_th)) {
 795                 netif_wake_queue(pr->port->netdev);
 796                 pr->queue_stopped = 0;
 797         }
 798         spin_unlock_irqrestore(&pr->netif_queue, flags);
 799
 800         return cqe;
 801 }
 802
 803 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
 804 #define EHEA_POLL_MAX_CQES 65535
 805
 806 static int ehea_poll(struct napi_struct *napi, int budget)
 807 {
 808         struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
 809                                                 napi);
 810         struct net_device *dev = pr->port->netdev;
 811         struct ehea_cqe *cqe;
 812         struct ehea_cqe *cqe_skb = NULL;
 813         int force_irq, wqe_index;
 814         int rx = 0;
 815
 816         force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
 817         cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 818
 819         if (!force_irq)
 820                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 821
 822         while ((rx != budget) || force_irq) {
 823                 pr->poll_counter = 0;
 824                 force_irq = 0;
 825                 netif_rx_complete(dev, napi);
 826                 ehea_reset_cq_ep(pr->recv_cq);
 827                 ehea_reset_cq_ep(pr->send_cq);
 828                 ehea_reset_cq_n1(pr->recv_cq);
 829                 ehea_reset_cq_n1(pr->send_cq);
 830                 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
 831                 cqe_skb = ehea_poll_cq(pr->send_cq);
 832
 833                 if (!cqe && !cqe_skb)
 834                         return rx;
 835
 836                 if (!netif_rx_reschedule(dev, napi))
 837                         return rx;
 838
 839                 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 840                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 841         }
 842
 843         pr->poll_counter++;
 844         return rx;
 845 }
 846
 847 #ifdef CONFIG_NET_POLL_CONTROLLER
 848 static void ehea_netpoll(struct net_device *dev)
 849 {
 850         struct ehea_port *port = netdev_priv(dev);
 851         int i;
 852
 853         for (i = 0; i < port->num_def_qps; i++)
 854                 netif_rx_schedule(dev, &port->port_res[i].napi);
 855 }
 856 #endif
 857
 858 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 859 {
 860         struct ehea_port_res *pr = param;
 861
 862         netif_rx_schedule(pr->port->netdev, &pr->napi);
 863
 864         return IRQ_HANDLED;
 865 }
 866
 867 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 868 {
 869         struct ehea_port *port = param;
 870         struct ehea_eqe *eqe;
 871         struct ehea_qp *qp;
 872         u32 qp_token;
 873
 874         eqe = ehea_poll_eq(port->qp_eq);
 875
 876         while (eqe) {
 877                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 878                 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
 879                            eqe->entry, qp_token);
 880
 881                 qp = port->port_res[qp_token].qp;
 882                 ehea_error_data(port->adapter, qp->fw_handle);
 883                 eqe = ehea_poll_eq(port->qp_eq);
 884         }
 885
 886         schedule_work(&port->reset_task);
 887
 888         return IRQ_HANDLED;
 889 }
 890
 891 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 892                                        int logical_port)
 893 {
 894         int i;
 895
 896         for (i = 0; i < EHEA_MAX_PORTS; i++)
 897                 if (adapter->port[i])
 898                         if (adapter->port[i]->logical_port_id == logical_port)
 899                                 return adapter->port[i];
 900         return NULL;
 901 }
 902
 903 int ehea_sense_port_attr(struct ehea_port *port)
 904 {
 905         int ret;
 906         u64 hret;
 907         struct hcp_ehea_port_cb0 *cb0;
 908
 909         /* may be called via ehea_neq_tasklet() */
 910         cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
 911         if (!cb0) {
 912                 ehea_error("no mem for cb0");
 913                 ret = -ENOMEM;
 914                 goto out;
 915         }
 916
 917         hret = ehea_h_query_ehea_port(port->adapter->handle,
 918                                       port->logical_port_id, H_PORT_CB0,
 919                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 920                                       cb0);
 921         if (hret != H_SUCCESS) {
 922                 ret = -EIO;
 923                 goto out_free;
 924         }
 925
 926         /* MAC address */
 927         port->mac_addr = cb0->port_mac_addr << 16;
 928
 929         if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
 930                 ret = -EADDRNOTAVAIL;
 931                 goto out_free;
 932         }
 933
 934         /* Port speed */
 935         switch (cb0->port_speed) {
 936         case H_SPEED_10M_H:
 937                 port->port_speed = EHEA_SPEED_10M;
 938                 port->full_duplex = 0;
 939                 break;
 940         case H_SPEED_10M_F:
 941                 port->port_speed = EHEA_SPEED_10M;
 942                 port->full_duplex = 1;
 943                 break;
 944         case H_SPEED_100M_H:
 945                 port->port_speed = EHEA_SPEED_100M;
 946                 port->full_duplex = 0;
 947                 break;
 948         case H_SPEED_100M_F:
 949                 port->port_speed = EHEA_SPEED_100M;
 950                 port->full_duplex = 1;
 951                 break;
 952         case H_SPEED_1G_F:
 953                 port->port_speed = EHEA_SPEED_1G;
 954                 port->full_duplex = 1;
 955                 break;
 956         case H_SPEED_10G_F:
 957                 port->port_speed = EHEA_SPEED_10G;
 958                 port->full_duplex = 1;
 959                 break;
 960         default:
 961                 port->port_speed = 0;
 962                 port->full_duplex = 0;
 963                 break;
 964         }
 965
 966         port->autoneg = 1;
 967         port->num_mcs = cb0->num_default_qps;
 968
 969         /* Number of default QPs */
 970         if (use_mcs)
 971                 port->num_def_qps = cb0->num_default_qps;
 972         else
 973                 port->num_def_qps = 1;
 974
 975         if (!port->num_def_qps) {
 976                 ret = -EINVAL;
 977                 goto out_free;
 978         }
 979
 980         port->num_tx_qps = num_tx_qps;
 981
 982         if (port->num_def_qps >= port->num_tx_qps)
 983                 port->num_add_tx_qps = 0;
 984         else
 985                 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
 986
 987         ret = 0;
 988 out_free:
 989         if (ret || netif_msg_probe(port))
 990                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
 991         kfree(cb0);
 992 out:
 993         return ret;
 994 }
 995
 996 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
 997 {
 998         struct hcp_ehea_port_cb4 *cb4;
 999         u64 hret;
1000         int ret = 0;
1001
1002         cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1003         if (!cb4) {
1004                 ehea_error("no mem for cb4");
1005                 ret = -ENOMEM;
1006                 goto out;
1007         }
1008
1009         cb4->port_speed = port_speed;
1010
1011         netif_carrier_off(port->netdev);
1012
1013         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1014                                        port->logical_port_id,
1015                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1016         if (hret == H_SUCCESS) {
1017                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1018
1019                 hret = ehea_h_query_ehea_port(port->adapter->handle,
1020                                               port->logical_port_id,
1021                                               H_PORT_CB4, H_PORT_CB4_SPEED,
1022                                               cb4);
1023                 if (hret == H_SUCCESS) {
1024                         switch (cb4->port_speed) {
1025                         case H_SPEED_10M_H:
1026                                 port->port_speed = EHEA_SPEED_10M;
1027                                 port->full_duplex = 0;
1028                                 break;
1029                         case H_SPEED_10M_F:
1030                                 port->port_speed = EHEA_SPEED_10M;
1031                                 port->full_duplex = 1;
1032                                 break;
1033                         case H_SPEED_100M_H:
1034                                 port->port_speed = EHEA_SPEED_100M;
1035                                 port->full_duplex = 0;
1036                                 break;
1037                         case H_SPEED_100M_F:
1038                                 port->port_speed = EHEA_SPEED_100M;
1039                                 port->full_duplex = 1;
1040                                 break;
1041                         case H_SPEED_1G_F:
1042                                 port->port_speed = EHEA_SPEED_1G;
1043                                 port->full_duplex = 1;
1044                                 break;
1045                         case H_SPEED_10G_F:
1046                                 port->port_speed = EHEA_SPEED_10G;
1047                                 port->full_duplex = 1;
1048                                 break;
1049                         default:
1050                                 port->port_speed = 0;
1051                                 port->full_duplex = 0;
1052                                 break;
1053                         }
1054                 } else {
1055                         ehea_error("Failed sensing port speed");
1056                         ret = -EIO;
1057                 }
1058         } else {
1059                 if (hret == H_AUTHORITY) {
1060                         ehea_info("Hypervisor denied setting port speed");
1061                         ret = -EPERM;
1062                 } else {
1063                         ret = -EIO;
1064                         ehea_error("Failed setting port speed");
1065                 }
1066         }
1067         if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1068                 netif_carrier_on(port->netdev);
1069
1070         kfree(cb4);
1071 out:
1072         return ret;
1073 }
1074
1075 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1076 {
1077         int ret;
1078         u8 ec;
1079         u8 portnum;
1080         struct ehea_port *port;
1081
1082         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1083         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1084         port = ehea_get_port(adapter, portnum);
1085
1086         switch (ec) {
1087         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
1088
1089                 if (!port) {
1090                         ehea_error("unknown portnum %x", portnum);
1091                         break;
1092                 }
1093
1094                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1095                         if (!netif_carrier_ok(port->netdev)) {
1096                                 ret = ehea_sense_port_attr(port);
1097                                 if (ret) {
1098                                         ehea_error("failed resensing port "
1099                                                    "attributes");
1100                                         break;
1101                                 }
1102
1103                                 if (netif_msg_link(port))
1104                                         ehea_info("%s: Logical port up: %dMbps "
1105                                                   "%s Duplex",
1106                                                   port->netdev->name,
1107                                                   port->port_speed,
1108                                                   port->full_duplex ==
1109                                                   1 ? "Full" : "Half");
1110
1111                                 netif_carrier_on(port->netdev);
1112                                 netif_wake_queue(port->netdev);
1113                         }
1114                 } else
1115                         if (netif_carrier_ok(port->netdev)) {
1116                                 if (netif_msg_link(port))
1117                                         ehea_info("%s: Logical port down",
1118                                                   port->netdev->name);
1119                                 netif_carrier_off(port->netdev);
1120                                 netif_stop_queue(port->netdev);
1121                         }
1122
1123                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1124                         port->phy_link = EHEA_PHY_LINK_UP;
1125                         if (netif_msg_link(port))
1126                                 ehea_info("%s: Physical port up",
1127                                           port->netdev->name);
1128                         if (prop_carrier_state)
1129                                 netif_carrier_on(port->netdev);
1130                 } else {
1131                         port->phy_link = EHEA_PHY_LINK_DOWN;
1132                         if (netif_msg_link(port))
1133                                 ehea_info("%s: Physical port down",
1134                                           port->netdev->name);
1135                         if (prop_carrier_state)
1136                                 netif_carrier_off(port->netdev);
1137                 }
1138
1139                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1140                         ehea_info("External switch port is primary port");
1141                 else
1142                         ehea_info("External switch port is backup port");
1143
1144                 break;
1145         case EHEA_EC_ADAPTER_MALFUNC:
1146                 ehea_error("Adapter malfunction");
1147                 break;
1148         case EHEA_EC_PORT_MALFUNC:
1149                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1150                 netif_carrier_off(port->netdev);
1151                 netif_stop_queue(port->netdev);
1152                 break;
1153         default:
1154                 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
1155                 break;
1156         }
1157 }
1158
1159 static void ehea_neq_tasklet(unsigned long data)
1160 {
1161         struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1162         struct ehea_eqe *eqe;
1163         u64 event_mask;
1164
1165         eqe = ehea_poll_eq(adapter->neq);
1166         ehea_debug("eqe=%p", eqe);
1167
1168         while (eqe) {
1169                 ehea_debug("*eqe=%lx", eqe->entry);
1170                 ehea_parse_eqe(adapter, eqe->entry);
1171                 eqe = ehea_poll_eq(adapter->neq);
1172                 ehea_debug("next eqe=%p", eqe);
1173         }
1174
1175         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1176                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1177                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1178
1179         ehea_h_reset_events(adapter->handle,
1180                             adapter->neq->fw_handle, event_mask);
1181 }
1182
1183 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1184 {
1185         struct ehea_adapter *adapter = param;
1186         tasklet_hi_schedule(&adapter->neq_tasklet);
1187         return IRQ_HANDLED;
1188 }
1189
1190
1191 static int ehea_fill_port_res(struct ehea_port_res *pr)
1192 {
1193         int ret;
1194         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1195
1196         ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1197                                      - init_attr->act_nr_rwqes_rq2
1198                                      - init_attr->act_nr_rwqes_rq3 - 1);
1199
1200         ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1201
1202         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1203
1204         return ret;
1205 }
1206
1207 static int ehea_reg_interrupts(struct net_device *dev)
1208 {
1209         struct ehea_port *port = netdev_priv(dev);
1210         struct ehea_port_res *pr;
1211         int i, ret;
1212
1213
1214         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1215                  dev->name);
1216
1217         ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1218                                   ehea_qp_aff_irq_handler,
1219                                   IRQF_DISABLED, port->int_aff_name, port);
1220         if (ret) {
1221                 ehea_error("failed registering irq for qp_aff_irq_handler:"
1222                            "ist=%X", port->qp_eq->attr.ist1);
1223                 goto out_free_qpeq;
1224         }
1225
1226         if (netif_msg_ifup(port))
1227                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1228                           "registered", port->qp_eq->attr.ist1);
1229
1230
1231         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1232                 pr = &port->port_res[i];
1233                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1234                          "%s-queue%d", dev->name, i);
1235                 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1236                                           ehea_recv_irq_handler,
1237                                           IRQF_DISABLED, pr->int_send_name,
1238                                           pr);
1239                 if (ret) {
1240                         ehea_error("failed registering irq for ehea_queue "
1241                                    "port_res_nr:%d, ist=%X", i,
1242                                    pr->eq->attr.ist1);
1243                         goto out_free_req;
1244                 }
1245                 if (netif_msg_ifup(port))
1246                         ehea_info("irq_handle 0x%X for function ehea_queue_int "
1247                                   "%d registered", pr->eq->attr.ist1, i);
1248         }
1249 out:
1250         return ret;
1251
1252
1253 out_free_req:
1254         while (--i >= 0) {
1255                 u32 ist = port->port_res[i].eq->attr.ist1;
1256                 ibmebus_free_irq(ist, &port->port_res[i]);
1257         }
1258
1259 out_free_qpeq:
1260         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1261         i = port->num_def_qps;
1262
1263         goto out;
1264
1265 }
1266
1267 static void ehea_free_interrupts(struct net_device *dev)
1268 {
1269         struct ehea_port *port = netdev_priv(dev);
1270         struct ehea_port_res *pr;
1271         int i;
1272
1273         /* send */
1274
1275         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1276                 pr = &port->port_res[i];
1277                 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1278                 if (netif_msg_intr(port))
1279                         ehea_info("free send irq for res %d with handle 0x%X",
1280                                   i, pr->eq->attr.ist1);
1281         }
1282
1283         /* associated events */
1284         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1285         if (netif_msg_intr(port))
1286                 ehea_info("associated event interrupt for handle 0x%X freed",
1287                           port->qp_eq->attr.ist1);
1288 }
1289
1290 static int ehea_configure_port(struct ehea_port *port)
1291 {
1292         int ret, i;
1293         u64 hret, mask;
1294         struct hcp_ehea_port_cb0 *cb0;
1295
1296         ret = -ENOMEM;
1297         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1298         if (!cb0)
1299                 goto out;
1300
1301         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1302                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1303                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1304                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1305                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1306                                       PXLY_RC_VLAN_FILTER)
1307                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1308
1309         for (i = 0; i < port->num_mcs; i++)
1310                 if (use_mcs)
1311                         cb0->default_qpn_arr[i] =
1312                                 port->port_res[i].qp->init_attr.qp_nr;
1313                 else
1314                         cb0->default_qpn_arr[i] =
1315                                 port->port_res[0].qp->init_attr.qp_nr;
1316
1317         if (netif_msg_ifup(port))
1318                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1319
1320         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1321              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1322
1323         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1324                                        port->logical_port_id,
1325                                        H_PORT_CB0, mask, cb0);
1326         ret = -EIO;
1327         if (hret != H_SUCCESS)
1328                 goto out_free;
1329
1330         ret = 0;
1331
1332 out_free:
1333         kfree(cb0);
1334 out:
1335         return ret;
1336 }
1337
1338 int ehea_gen_smrs(struct ehea_port_res *pr)
1339 {
1340         int ret;
1341         struct ehea_adapter *adapter = pr->port->adapter;
1342
1343         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1344         if (ret)
1345                 goto out;
1346
1347         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1348         if (ret)
1349                 goto out_free;
1350
1351         return 0;
1352
1353 out_free:
1354         ehea_rem_mr(&pr->send_mr);
1355 out:
1356         ehea_error("Generating SMRS failed\n");
1357         return -EIO;
1358 }
1359
1360 int ehea_rem_smrs(struct ehea_port_res *pr)
1361 {
1362         if ((ehea_rem_mr(&pr->send_mr))
1363             || (ehea_rem_mr(&pr->recv_mr)))
1364                 return -EIO;
1365         else
1366                 return 0;
1367 }
1368
1369 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1370 {
1371         int arr_size = sizeof(void *) * max_q_entries;
1372
1373         q_skba->arr = vmalloc(arr_size);
1374         if (!q_skba->arr)
1375                 return -ENOMEM;
1376
1377         memset(q_skba->arr, 0, arr_size);
1378
1379         q_skba->len = max_q_entries;
1380         q_skba->index = 0;
1381         q_skba->os_skbs = 0;
1382
1383         return 0;
1384 }
1385
1386 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1387                               struct port_res_cfg *pr_cfg, int queue_token)
1388 {
1389         struct ehea_adapter *adapter = port->adapter;
1390         enum ehea_eq_type eq_type = EHEA_EQ;
1391         struct ehea_qp_init_attr *init_attr = NULL;
1392         int ret = -EIO;
1393
1394         memset(pr, 0, sizeof(struct ehea_port_res));
1395
1396         pr->port = port;
1397         spin_lock_init(&pr->xmit_lock);
1398         spin_lock_init(&pr->netif_queue);
1399
1400         pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1401         if (!pr->eq) {
1402                 ehea_error("create_eq failed (eq)");
1403                 goto out_free;
1404         }
1405
1406         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1407                                      pr->eq->fw_handle,
1408                                      port->logical_port_id);
1409         if (!pr->recv_cq) {
1410                 ehea_error("create_cq failed (cq_recv)");
1411                 goto out_free;
1412         }
1413
1414         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1415                                      pr->eq->fw_handle,
1416                                      port->logical_port_id);
1417         if (!pr->send_cq) {
1418                 ehea_error("create_cq failed (cq_send)");
1419                 goto out_free;
1420         }
1421
1422         if (netif_msg_ifup(port))
1423                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1424                           pr->send_cq->attr.act_nr_of_cqes,
1425                           pr->recv_cq->attr.act_nr_of_cqes);
1426
1427         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1428         if (!init_attr) {
1429                 ret = -ENOMEM;
1430                 ehea_error("no mem for ehea_qp_init_attr");
1431                 goto out_free;
1432         }
1433
1434         init_attr->low_lat_rq1 = 1;
1435         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1436         init_attr->rq_count = 3;
1437         init_attr->qp_token = queue_token;
1438         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1439         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1440         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1441         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1442         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1443         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1444         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1445         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1446         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1447         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1448         init_attr->port_nr = port->logical_port_id;
1449         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1450         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1451         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1452
1453         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1454         if (!pr->qp) {
1455                 ehea_error("create_qp failed");
1456                 ret = -EIO;
1457                 goto out_free;
1458         }
1459
1460         if (netif_msg_ifup(port))
1461                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1462                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1463                           init_attr->act_nr_send_wqes,
1464                           init_attr->act_nr_rwqes_rq1,
1465                           init_attr->act_nr_rwqes_rq2,
1466                           init_attr->act_nr_rwqes_rq3);
1467
1468         pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1469
1470         ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1471         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1472         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1473         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1474         if (ret)
1475                 goto out_free;
1476
1477         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1478         if (ehea_gen_smrs(pr) != 0) {
1479                 ret = -EIO;
1480                 goto out_free;
1481         }
1482
1483         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1484
1485         kfree(init_attr);
1486
1487         netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1488
1489         pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1490         pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1491         pr->lro_mgr.lro_arr = pr->lro_desc;
1492         pr->lro_mgr.get_skb_header = get_skb_hdr;
1493         pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1494         pr->lro_mgr.dev = port->netdev;
1495         pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1496         pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1497
1498         ret = 0;
1499         goto out;
1500
1501 out_free:
1502         kfree(init_attr);
1503         vfree(pr->sq_skba.arr);
1504         vfree(pr->rq1_skba.arr);
1505         vfree(pr->rq2_skba.arr);
1506         vfree(pr->rq3_skba.arr);
1507         ehea_destroy_qp(pr->qp);
1508         ehea_destroy_cq(pr->send_cq);
1509         ehea_destroy_cq(pr->recv_cq);
1510         ehea_destroy_eq(pr->eq);
1511 out:
1512         return ret;
1513 }
1514
1515 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1516 {
1517         int ret, i;
1518
1519         ret = ehea_destroy_qp(pr->qp);
1520
1521         if (!ret) {
1522                 ehea_destroy_cq(pr->send_cq);
1523                 ehea_destroy_cq(pr->recv_cq);
1524                 ehea_destroy_eq(pr->eq);
1525
1526                 for (i = 0; i < pr->rq1_skba.len; i++)
1527                         if (pr->rq1_skba.arr[i])
1528                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1529
1530                 for (i = 0; i < pr->rq2_skba.len; i++)
1531                         if (pr->rq2_skba.arr[i])
1532                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1533
1534                 for (i = 0; i < pr->rq3_skba.len; i++)
1535                         if (pr->rq3_skba.arr[i])
1536                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1537
1538                 for (i = 0; i < pr->sq_skba.len; i++)
1539                         if (pr->sq_skba.arr[i])
1540                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1541
1542                 vfree(pr->rq1_skba.arr);
1543                 vfree(pr->rq2_skba.arr);
1544                 vfree(pr->rq3_skba.arr);
1545                 vfree(pr->sq_skba.arr);
1546                 ret = ehea_rem_smrs(pr);
1547         }
1548         return ret;
1549 }
1550
1551 /*
1552  * The write_* functions store information in swqe which is used by
1553  * the hardware to calculate the ip/tcp/udp checksum
1554  */
1555
1556 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1557                                       const struct sk_buff *skb)
1558 {
1559         swqe->ip_start = skb_network_offset(skb);
1560         swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1561 }
1562
1563 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1564                                         const struct sk_buff *skb)
1565 {
1566         swqe->tcp_offset =
1567                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1568
1569         swqe->tcp_end = (u16)skb->len - 1;
1570 }
1571
1572 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1573                                         const struct sk_buff *skb)
1574 {
1575         swqe->tcp_offset =
1576                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1577
1578         swqe->tcp_end = (u16)skb->len - 1;
1579 }
1580
1581
1582 static void write_swqe2_TSO(struct sk_buff *skb,
1583                             struct ehea_swqe *swqe, u32 lkey)
1584 {
1585         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1586         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1587         int skb_data_size = skb->len - skb->data_len;
1588         int headersize;
1589
1590         /* Packet is TCP with TSO enabled */
1591         swqe->tx_control |= EHEA_SWQE_TSO;
1592         swqe->mss = skb_shinfo(skb)->gso_size;
1593         /* copy only eth/ip/tcp headers to immediate data and
1594          * the rest of skb->data to sg1entry
1595          */
1596         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1597
1598         skb_data_size = skb->len - skb->data_len;
1599
1600         if (skb_data_size >= headersize) {
1601                 /* copy immediate data */
1602                 skb_copy_from_linear_data(skb, imm_data, headersize);
1603                 swqe->immediate_data_length = headersize;
1604
1605                 if (skb_data_size > headersize) {
1606                         /* set sg1entry data */
1607                         sg1entry->l_key = lkey;
1608                         sg1entry->len = skb_data_size - headersize;
1609                         sg1entry->vaddr =
1610                                 ehea_map_vaddr(skb->data + headersize);
1611                         swqe->descriptors++;
1612                 }
1613         } else
1614                 ehea_error("cannot handle fragmented headers");
1615 }
1616
1617 static void write_swqe2_nonTSO(struct sk_buff *skb,
1618                                struct ehea_swqe *swqe, u32 lkey)
1619 {
1620         int skb_data_size = skb->len - skb->data_len;
1621         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1622         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1623
1624         /* Packet is any nonTSO type
1625          *
1626          * Copy as much as possible skb->data to immediate data and
1627          * the rest to sg1entry
1628          */
1629         if (skb_data_size >= SWQE2_MAX_IMM) {
1630                 /* copy immediate data */
1631                 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1632
1633                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1634
1635                 if (skb_data_size > SWQE2_MAX_IMM) {
1636                         /* copy sg1entry data */
1637                         sg1entry->l_key = lkey;
1638                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1639                         sg1entry->vaddr =
1640                                 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1641                         swqe->descriptors++;
1642                 }
1643         } else {
1644                 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1645                 swqe->immediate_data_length = skb_data_size;
1646         }
1647 }
1648
1649 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1650                                     struct ehea_swqe *swqe, u32 lkey)
1651 {
1652         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1653         skb_frag_t *frag;
1654         int nfrags, sg1entry_contains_frag_data, i;
1655
1656         nfrags = skb_shinfo(skb)->nr_frags;
1657         sg1entry = &swqe->u.immdata_desc.sg_entry;
1658         sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1659         swqe->descriptors = 0;
1660         sg1entry_contains_frag_data = 0;
1661
1662         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1663                 write_swqe2_TSO(skb, swqe, lkey);
1664         else
1665                 write_swqe2_nonTSO(skb, swqe, lkey);
1666
1667         /* write descriptors */
1668         if (nfrags > 0) {
1669                 if (swqe->descriptors == 0) {
1670                         /* sg1entry not yet used */
1671                         frag = &skb_shinfo(skb)->frags[0];
1672
1673                         /* copy sg1entry data */
1674                         sg1entry->l_key = lkey;
1675                         sg1entry->len = frag->size;
1676                         sg1entry->vaddr =
1677                                 ehea_map_vaddr(page_address(frag->page)
1678                                                + frag->page_offset);
1679                         swqe->descriptors++;
1680                         sg1entry_contains_frag_data = 1;
1681                 }
1682
1683                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1684
1685                         frag = &skb_shinfo(skb)->frags[i];
1686                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1687
1688                         sgentry->l_key = lkey;
1689                         sgentry->len = frag->size;
1690                         sgentry->vaddr =
1691                                 ehea_map_vaddr(page_address(frag->page)
1692                                                + frag->page_offset);
1693                         swqe->descriptors++;
1694                 }
1695         }
1696 }
1697
1698 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1699 {
1700         int ret = 0;
1701         u64 hret;
1702         u8 reg_type;
1703
1704         /* De/Register untagged packets */
1705         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1706         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1707                                      port->logical_port_id,
1708                                      reg_type, port->mac_addr, 0, hcallid);
1709         if (hret != H_SUCCESS) {
1710                 ehea_error("%sregistering bc address failed (tagged)",
1711                            hcallid == H_REG_BCMC ? "" : "de");
1712                 ret = -EIO;
1713                 goto out_herr;
1714         }
1715
1716         /* De/Register VLAN packets */
1717         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1718         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1719                                      port->logical_port_id,
1720                                      reg_type, port->mac_addr, 0, hcallid);
1721         if (hret != H_SUCCESS) {
1722                 ehea_error("%sregistering bc address failed (vlan)",
1723                            hcallid == H_REG_BCMC ? "" : "de");
1724                 ret = -EIO;
1725         }
1726 out_herr:
1727         return ret;
1728 }
1729
1730 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1731 {
1732         struct ehea_port *port = netdev_priv(dev);
1733         struct sockaddr *mac_addr = sa;
1734         struct hcp_ehea_port_cb0 *cb0;
1735         int ret;
1736         u64 hret;
1737
1738         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1739                 ret = -EADDRNOTAVAIL;
1740                 goto out;
1741         }
1742
1743         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1744         if (!cb0) {
1745                 ehea_error("no mem for cb0");
1746                 ret = -ENOMEM;
1747                 goto out;
1748         }
1749
1750         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1751
1752         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1753
1754         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1755                                        port->logical_port_id, H_PORT_CB0,
1756                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1757         if (hret != H_SUCCESS) {
1758                 ret = -EIO;
1759                 goto out_free;
1760         }
1761
1762         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1763
1764         down(&ehea_bcmc_regs.lock);
1765
1766         /* Deregister old MAC in pHYP */
1767         ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1768         if (ret)
1769                 goto out_upregs;
1770
1771         port->mac_addr = cb0->port_mac_addr << 16;
1772
1773         /* Register new MAC in pHYP */
1774         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1775         if (ret)
1776                 goto out_upregs;
1777
1778         ret = 0;
1779
1780 out_upregs:
1781         ehea_update_bcmc_registrations();
1782         up(&ehea_bcmc_regs.lock);
1783 out_free:
1784         kfree(cb0);
1785 out:
1786         return ret;
1787 }
1788
1789 static void ehea_promiscuous_error(u64 hret, int enable)
1790 {
1791         if (hret == H_AUTHORITY)
1792                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1793                           enable == 1 ? "en" : "dis");
1794         else
1795                 ehea_error("failed %sabling promiscuous mode",
1796                            enable == 1 ? "en" : "dis");
1797 }
1798
1799 static void ehea_promiscuous(struct net_device *dev, int enable)
1800 {
1801         struct ehea_port *port = netdev_priv(dev);
1802         struct hcp_ehea_port_cb7 *cb7;
1803         u64 hret;
1804
1805         if ((enable && port->promisc) || (!enable && !port->promisc))
1806                 return;
1807
1808         cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1809         if (!cb7) {
1810                 ehea_error("no mem for cb7");
1811                 goto out;
1812         }
1813
1814         /* Modify Pxs_DUCQPN in CB7 */
1815         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1816
1817         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1818                                        port->logical_port_id,
1819                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1820         if (hret) {
1821                 ehea_promiscuous_error(hret, enable);
1822                 goto out;
1823         }
1824
1825         port->promisc = enable;
1826 out:
1827         kfree(cb7);
1828         return;
1829 }
1830
1831 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1832                                      u32 hcallid)
1833 {
1834         u64 hret;
1835         u8 reg_type;
1836
1837         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1838                  | EHEA_BCMC_UNTAGGED;
1839
1840         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1841                                      port->logical_port_id,
1842                                      reg_type, mc_mac_addr, 0, hcallid);
1843         if (hret)
1844                 goto out;
1845
1846         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1847                  | EHEA_BCMC_VLANID_ALL;
1848
1849         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1850                                      port->logical_port_id,
1851                                      reg_type, mc_mac_addr, 0, hcallid);
1852 out:
1853         return hret;
1854 }
1855
1856 static int ehea_drop_multicast_list(struct net_device *dev)
1857 {
1858         struct ehea_port *port = netdev_priv(dev);
1859         struct ehea_mc_list *mc_entry = port->mc_list;
1860         struct list_head *pos;
1861         struct list_head *temp;
1862         int ret = 0;
1863         u64 hret;
1864
1865         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1866                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1867
1868                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1869                                                  H_DEREG_BCMC);
1870                 if (hret) {
1871                         ehea_error("failed deregistering mcast MAC");
1872                         ret = -EIO;
1873                 }
1874
1875                 list_del(pos);
1876                 kfree(mc_entry);
1877         }
1878         return ret;
1879 }
1880
1881 static void ehea_allmulti(struct net_device *dev, int enable)
1882 {
1883         struct ehea_port *port = netdev_priv(dev);
1884         u64 hret;
1885
1886         if (!port->allmulti) {
1887                 if (enable) {
1888                         /* Enable ALLMULTI */
1889                         ehea_drop_multicast_list(dev);
1890                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1891                         if (!hret)
1892                                 port->allmulti = 1;
1893                         else
1894                                 ehea_error("failed enabling IFF_ALLMULTI");
1895                 }
1896         } else
1897                 if (!enable) {
1898                         /* Disable ALLMULTI */
1899                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1900                         if (!hret)
1901                                 port->allmulti = 0;
1902                         else
1903                                 ehea_error("failed disabling IFF_ALLMULTI");
1904                 }
1905 }
1906
1907 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1908 {
1909         struct ehea_mc_list *ehea_mcl_entry;
1910         u64 hret;
1911
1912         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1913         if (!ehea_mcl_entry) {
1914                 ehea_error("no mem for mcl_entry");
1915                 return;
1916         }
1917
1918         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1919
1920         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1921
1922         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1923                                          H_REG_BCMC);
1924         if (!hret)
1925                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1926         else {
1927                 ehea_error("failed registering mcast MAC");
1928                 kfree(ehea_mcl_entry);
1929         }
1930 }
1931
1932 static void ehea_set_multicast_list(struct net_device *dev)
1933 {
1934         struct ehea_port *port = netdev_priv(dev);
1935         struct dev_mc_list *k_mcl_entry;
1936         int ret, i;
1937
1938         if (dev->flags & IFF_PROMISC) {
1939                 ehea_promiscuous(dev, 1);
1940                 return;
1941         }
1942         ehea_promiscuous(dev, 0);
1943
1944         down(&ehea_bcmc_regs.lock);
1945
1946         if (dev->flags & IFF_ALLMULTI) {
1947                 ehea_allmulti(dev, 1);
1948                 goto out;
1949         }
1950         ehea_allmulti(dev, 0);
1951
1952         if (dev->mc_count) {
1953                 ret = ehea_drop_multicast_list(dev);
1954                 if (ret) {
1955                         /* Dropping the current multicast list failed.
1956                          * Enabling ALL_MULTI is the best we can do.
1957                          */
1958                         ehea_allmulti(dev, 1);
1959                 }
1960
1961                 if (dev->mc_count > port->adapter->max_mc_mac) {
1962                         ehea_info("Mcast registration limit reached (0x%lx). "
1963                                   "Use ALLMULTI!",
1964                                   port->adapter->max_mc_mac);
1965                         goto out;
1966                 }
1967
1968                 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1969                              k_mcl_entry = k_mcl_entry->next)
1970                         ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1971
1972         }
1973 out:
1974         ehea_update_bcmc_registrations();
1975         up(&ehea_bcmc_regs.lock);
1976         return;
1977 }
1978
1979 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1980 {
1981         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1982                 return -EINVAL;
1983         dev->mtu = new_mtu;
1984         return 0;
1985 }
1986
1987 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1988                        struct ehea_swqe *swqe, u32 lkey)
1989 {
1990         if (skb->protocol == htons(ETH_P_IP)) {
1991                 const struct iphdr *iph = ip_hdr(skb);
1992
1993                 /* IPv4 */
1994                 swqe->tx_control |= EHEA_SWQE_CRC
1995                                  | EHEA_SWQE_IP_CHECKSUM
1996                                  | EHEA_SWQE_TCP_CHECKSUM
1997                                  | EHEA_SWQE_IMM_DATA_PRESENT
1998                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
1999
2000                 write_ip_start_end(swqe, skb);
2001
2002                 if (iph->protocol == IPPROTO_UDP) {
2003                         if ((iph->frag_off & IP_MF)
2004                             || (iph->frag_off & IP_OFFSET))
2005                                 /* IP fragment, so don't change cs */
2006                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2007                         else
2008                                 write_udp_offset_end(swqe, skb);
2009                 } else if (iph->protocol == IPPROTO_TCP) {
2010                         write_tcp_offset_end(swqe, skb);
2011                 }
2012
2013                 /* icmp (big data) and ip segmentation packets (all other ip
2014                    packets) do not require any special handling */
2015
2016         } else {
2017                 /* Other Ethernet Protocol */
2018                 swqe->tx_control |= EHEA_SWQE_CRC
2019                                  | EHEA_SWQE_IMM_DATA_PRESENT
2020                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2021         }
2022
2023         write_swqe2_data(skb, dev, swqe, lkey);
2024 }
2025
2026 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2027                        struct ehea_swqe *swqe)
2028 {
2029         int nfrags = skb_shinfo(skb)->nr_frags;
2030         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2031         skb_frag_t *frag;
2032         int i;
2033
2034         if (skb->protocol == htons(ETH_P_IP)) {
2035                 const struct iphdr *iph = ip_hdr(skb);
2036
2037                 /* IPv4 */
2038                 write_ip_start_end(swqe, skb);
2039
2040                 if (iph->protocol == IPPROTO_TCP) {
2041                         swqe->tx_control |= EHEA_SWQE_CRC
2042                                          | EHEA_SWQE_IP_CHECKSUM
2043                                          | EHEA_SWQE_TCP_CHECKSUM
2044                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2045
2046                         write_tcp_offset_end(swqe, skb);
2047
2048                 } else if (iph->protocol == IPPROTO_UDP) {
2049                         if ((iph->frag_off & IP_MF)
2050                             || (iph->frag_off & IP_OFFSET))
2051                                 /* IP fragment, so don't change cs */
2052                                 swqe->tx_control |= EHEA_SWQE_CRC
2053                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2054                         else {
2055                                 swqe->tx_control |= EHEA_SWQE_CRC
2056                                                  | EHEA_SWQE_IP_CHECKSUM
2057                                                  | EHEA_SWQE_TCP_CHECKSUM
2058                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2059
2060                                 write_udp_offset_end(swqe, skb);
2061                         }
2062                 } else {
2063                         /* icmp (big data) and
2064                            ip segmentation packets (all other ip packets) */
2065                         swqe->tx_control |= EHEA_SWQE_CRC
2066                                          | EHEA_SWQE_IP_CHECKSUM
2067                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2068                 }
2069         } else {
2070                 /* Other Ethernet Protocol */
2071                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2072         }
2073         /* copy (immediate) data */
2074         if (nfrags == 0) {
2075                 /* data is in a single piece */
2076                 skb_copy_from_linear_data(skb, imm_data, skb->len);
2077         } else {
2078                 /* first copy data from the skb->data buffer ... */
2079                 skb_copy_from_linear_data(skb, imm_data,
2080                                           skb->len - skb->data_len);
2081                 imm_data += skb->len - skb->data_len;
2082
2083                 /* ... then copy data from the fragments */
2084                 for (i = 0; i < nfrags; i++) {
2085                         frag = &skb_shinfo(skb)->frags[i];
2086                         memcpy(imm_data,
2087                                page_address(frag->page) + frag->page_offset,
2088                                frag->size);
2089                         imm_data += frag->size;
2090                 }
2091         }
2092         swqe->immediate_data_length = skb->len;
2093         dev_kfree_skb(skb);
2094 }
2095
2096 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2097 {
2098         struct tcphdr *tcp;
2099         u32 tmp;
2100
2101         if ((skb->protocol == htons(ETH_P_IP)) &&
2102             (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2103                 tcp = (struct tcphdr *)(skb_network_header(skb) +
2104                                         (ip_hdr(skb)->ihl * 4));
2105                 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2106                 tmp += ip_hdr(skb)->daddr % 31;
2107                 return tmp % num_qps;
2108         } else
2109                 return 0;
2110 }
2111
2112 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2113 {
2114         struct ehea_port *port = netdev_priv(dev);
2115         struct ehea_swqe *swqe;
2116         unsigned long flags;
2117         u32 lkey;
2118         int swqe_index;
2119         struct ehea_port_res *pr;
2120
2121         pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2122
2123         if (!spin_trylock(&pr->xmit_lock))
2124                 return NETDEV_TX_BUSY;
2125
2126         if (pr->queue_stopped) {
2127                 spin_unlock(&pr->xmit_lock);
2128                 return NETDEV_TX_BUSY;
2129         }
2130
2131         swqe = ehea_get_swqe(pr->qp, &swqe_index);
2132         memset(swqe, 0, SWQE_HEADER_SIZE);
2133         atomic_dec(&pr->swqe_avail);
2134
2135         if (skb->len <= SWQE3_MAX_IMM) {
2136                 u32 sig_iv = port->sig_comp_iv;
2137                 u32 swqe_num = pr->swqe_id_counter;
2138                 ehea_xmit3(skb, dev, swqe);
2139                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2140                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2141                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2142                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2143                                                       sig_iv);
2144                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2145                         pr->swqe_ll_count = 0;
2146                 } else
2147                         pr->swqe_ll_count += 1;
2148         } else {
2149                 swqe->wr_id =
2150                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2151                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2152                       | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2153                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2154                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2155
2156                 pr->sq_skba.index++;
2157                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2158
2159                 lkey = pr->send_mr.lkey;
2160                 ehea_xmit2(skb, dev, swqe, lkey);
2161                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2162         }
2163         pr->swqe_id_counter += 1;
2164
2165         if (port->vgrp && vlan_tx_tag_present(skb)) {
2166                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2167                 swqe->vlan_tag = vlan_tx_tag_get(skb);
2168         }
2169
2170         if (netif_msg_tx_queued(port)) {
2171                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2172                 ehea_dump(swqe, 512, "swqe");
2173         }
2174
2175         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2176                 netif_stop_queue(dev);
2177                 swqe->tx_control |= EHEA_SWQE_PURGE;
2178         }
2179
2180         ehea_post_swqe(pr->qp, swqe);
2181         pr->tx_packets++;
2182
2183         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2184                 spin_lock_irqsave(&pr->netif_queue, flags);
2185                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2186                         pr->p_stats.queue_stopped++;
2187                         netif_stop_queue(dev);
2188                         pr->queue_stopped = 1;
2189                 }
2190                 spin_unlock_irqrestore(&pr->netif_queue, flags);
2191         }
2192         dev->trans_start = jiffies;
2193         spin_unlock(&pr->xmit_lock);
2194
2195         return NETDEV_TX_OK;
2196 }
2197
2198 static void ehea_vlan_rx_register(struct net_device *dev,
2199                                   struct vlan_group *grp)
2200 {
2201         struct ehea_port *port = netdev_priv(dev);
2202         struct ehea_adapter *adapter = port->adapter;
2203         struct hcp_ehea_port_cb1 *cb1;
2204         u64 hret;
2205
2206         port->vgrp = grp;
2207
2208         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2209         if (!cb1) {
2210                 ehea_error("no mem for cb1");
2211                 goto out;
2212         }
2213
2214         memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
2215
2216         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2217                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2218         if (hret != H_SUCCESS)
2219                 ehea_error("modify_ehea_port failed");
2220
2221         kfree(cb1);
2222 out:
2223         return;
2224 }
2225
2226 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2227 {
2228         struct ehea_port *port = netdev_priv(dev);
2229         struct ehea_adapter *adapter = port->adapter;
2230         struct hcp_ehea_port_cb1 *cb1;
2231         int index;
2232         u64 hret;
2233
2234         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2235         if (!cb1) {
2236                 ehea_error("no mem for cb1");
2237                 goto out;
2238         }
2239
2240         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2241                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2242         if (hret != H_SUCCESS) {
2243                 ehea_error("query_ehea_port failed");
2244                 goto out;
2245         }
2246
2247         index = (vid / 64);
2248         cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2249
2250         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2251                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2252         if (hret != H_SUCCESS)
2253                 ehea_error("modify_ehea_port failed");
2254 out:
2255         kfree(cb1);
2256         return;
2257 }
2258
2259 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2260 {
2261         struct ehea_port *port = netdev_priv(dev);
2262         struct ehea_adapter *adapter = port->adapter;
2263         struct hcp_ehea_port_cb1 *cb1;
2264         int index;
2265         u64 hret;
2266
2267         vlan_group_set_device(port->vgrp, vid, NULL);
2268
2269         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2270         if (!cb1) {
2271                 ehea_error("no mem for cb1");
2272                 goto out;
2273         }
2274
2275         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2276                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2277         if (hret != H_SUCCESS) {
2278                 ehea_error("query_ehea_port failed");
2279                 goto out;
2280         }
2281
2282         index = (vid / 64);
2283         cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2284
2285         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2286                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2287         if (hret != H_SUCCESS)
2288                 ehea_error("modify_ehea_port failed");
2289 out:
2290         kfree(cb1);
2291         return;
2292 }
2293
2294 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2295 {
2296         int ret = -EIO;
2297         u64 hret;
2298         u16 dummy16 = 0;
2299         u64 dummy64 = 0;
2300         struct hcp_modify_qp_cb0 *cb0;
2301
2302         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2303         if (!cb0) {
2304                 ret = -ENOMEM;
2305                 goto out;
2306         }
2307
2308         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2309                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2310         if (hret != H_SUCCESS) {
2311                 ehea_error("query_ehea_qp failed (1)");
2312                 goto out;
2313         }
2314
2315         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2316         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2317                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2318                                      &dummy64, &dummy64, &dummy16, &dummy16);
2319         if (hret != H_SUCCESS) {
2320                 ehea_error("modify_ehea_qp failed (1)");
2321                 goto out;
2322         }
2323
2324         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2325                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2326         if (hret != H_SUCCESS) {
2327                 ehea_error("query_ehea_qp failed (2)");
2328                 goto out;
2329         }
2330
2331         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2332         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2333                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2334                                      &dummy64, &dummy64, &dummy16, &dummy16);
2335         if (hret != H_SUCCESS) {
2336                 ehea_error("modify_ehea_qp failed (2)");
2337                 goto out;
2338         }
2339
2340         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2341                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2342         if (hret != H_SUCCESS) {
2343                 ehea_error("query_ehea_qp failed (3)");
2344                 goto out;
2345         }
2346
2347         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2348         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2349                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2350                                      &dummy64, &dummy64, &dummy16, &dummy16);
2351         if (hret != H_SUCCESS) {
2352                 ehea_error("modify_ehea_qp failed (3)");
2353                 goto out;
2354         }
2355
2356         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2357                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2358         if (hret != H_SUCCESS) {
2359                 ehea_error("query_ehea_qp failed (4)");
2360                 goto out;
2361         }
2362
2363         ret = 0;
2364 out:
2365         kfree(cb0);
2366         return ret;
2367 }
2368
2369 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2370                                int add_tx_qps)
2371 {
2372         int ret, i;
2373         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2374         enum ehea_eq_type eq_type = EHEA_EQ;
2375
2376         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2377                                    EHEA_MAX_ENTRIES_EQ, 1);
2378         if (!port->qp_eq) {
2379                 ret = -EINVAL;
2380                 ehea_error("ehea_create_eq failed (qp_eq)");
2381                 goto out_kill_eq;
2382         }
2383
2384         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2385         pr_cfg.max_entries_scq = sq_entries * 2;
2386         pr_cfg.max_entries_sq = sq_entries;
2387         pr_cfg.max_entries_rq1 = rq1_entries;
2388         pr_cfg.max_entries_rq2 = rq2_entries;
2389         pr_cfg.max_entries_rq3 = rq3_entries;
2390
2391         pr_cfg_small_rx.max_entries_rcq = 1;
2392         pr_cfg_small_rx.max_entries_scq = sq_entries;
2393         pr_cfg_small_rx.max_entries_sq = sq_entries;
2394         pr_cfg_small_rx.max_entries_rq1 = 1;
2395         pr_cfg_small_rx.max_entries_rq2 = 1;
2396         pr_cfg_small_rx.max_entries_rq3 = 1;
2397
2398         for (i = 0; i < def_qps; i++) {
2399                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2400                 if (ret)
2401                         goto out_clean_pr;
2402         }
2403         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2404                 ret = ehea_init_port_res(port, &port->port_res[i],
2405                                          &pr_cfg_small_rx, i);
2406                 if (ret)
2407                         goto out_clean_pr;
2408         }
2409
2410         return 0;
2411
2412 out_clean_pr:
2413         while (--i >= 0)
2414                 ehea_clean_portres(port, &port->port_res[i]);
2415
2416 out_kill_eq:
2417         ehea_destroy_eq(port->qp_eq);
2418         return ret;
2419 }
2420
2421 static int ehea_clean_all_portres(struct ehea_port *port)
2422 {
2423         int ret = 0;
2424         int i;
2425
2426         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2427                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2428
2429         ret |= ehea_destroy_eq(port->qp_eq);
2430
2431         return ret;
2432 }
2433
2434 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2435 {
2436         if (adapter->active_ports)
2437                 return;
2438
2439         ehea_rem_mr(&adapter->mr);
2440 }
2441
2442 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2443 {
2444         if (adapter->active_ports)
2445                 return 0;
2446
2447         return ehea_reg_kernel_mr(adapter, &adapter->mr);
2448 }
2449
2450 static int ehea_up(struct net_device *dev)
2451 {
2452         int ret, i;
2453         struct ehea_port *port = netdev_priv(dev);
2454
2455         if (port->state == EHEA_PORT_UP)
2456                 return 0;
2457
2458         down(&ehea_fw_handles.lock);
2459
2460         ret = ehea_port_res_setup(port, port->num_def_qps,
2461                                   port->num_add_tx_qps);
2462         if (ret) {
2463                 ehea_error("port_res_failed");
2464                 goto out;
2465         }
2466
2467         /* Set default QP for this port */
2468         ret = ehea_configure_port(port);
2469         if (ret) {
2470                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2471                 goto out_clean_pr;
2472         }
2473
2474         ret = ehea_reg_interrupts(dev);
2475         if (ret) {
2476                 ehea_error("reg_interrupts failed. ret:%d", ret);
2477                 goto out_clean_pr;
2478         }
2479
2480         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2481                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2482                 if (ret) {
2483                         ehea_error("activate_qp failed");
2484                         goto out_free_irqs;
2485                 }
2486         }
2487
2488         for (i = 0; i < port->num_def_qps; i++) {
2489                 ret = ehea_fill_port_res(&port->port_res[i]);
2490                 if (ret) {
2491                         ehea_error("out_free_irqs");
2492                         goto out_free_irqs;
2493                 }
2494         }
2495
2496         down(&ehea_bcmc_regs.lock);
2497
2498         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2499         if (ret) {
2500                 ret = -EIO;
2501                 goto out_free_irqs;
2502         }
2503
2504         port->state = EHEA_PORT_UP;
2505
2506         ret = 0;
2507         goto out;
2508
2509 out_free_irqs:
2510         ehea_free_interrupts(dev);
2511
2512 out_clean_pr:
2513         ehea_clean_all_portres(port);
2514 out:
2515         if (ret)
2516                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2517
2518         ehea_update_bcmc_registrations();
2519         up(&ehea_bcmc_regs.lock);
2520
2521         ehea_update_firmware_handles();
2522         up(&ehea_fw_handles.lock);
2523
2524         return ret;
2525 }
2526
2527 static void port_napi_disable(struct ehea_port *port)
2528 {
2529         int i;
2530
2531         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2532                 napi_disable(&port->port_res[i].napi);
2533 }
2534
2535 static void port_napi_enable(struct ehea_port *port)
2536 {
2537         int i;
2538
2539         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2540                 napi_enable(&port->port_res[i].napi);
2541 }
2542
2543 static int ehea_open(struct net_device *dev)
2544 {
2545         int ret;
2546         struct ehea_port *port = netdev_priv(dev);
2547
2548         down(&port->port_lock);
2549
2550         if (netif_msg_ifup(port))
2551                 ehea_info("enabling port %s", dev->name);
2552
2553         ret = ehea_up(dev);
2554         if (!ret) {
2555                 port_napi_enable(port);
2556                 netif_start_queue(dev);
2557         }
2558
2559         up(&port->port_lock);
2560
2561         return ret;
2562 }
2563
2564 static int ehea_down(struct net_device *dev)
2565 {
2566         int ret;
2567         struct ehea_port *port = netdev_priv(dev);
2568
2569         if (port->state == EHEA_PORT_DOWN)
2570                 return 0;
2571
2572         down(&ehea_bcmc_regs.lock);
2573         ehea_drop_multicast_list(dev);
2574         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2575
2576         ehea_free_interrupts(dev);
2577
2578         down(&ehea_fw_handles.lock);
2579
2580         port->state = EHEA_PORT_DOWN;
2581
2582         ehea_update_bcmc_registrations();
2583         up(&ehea_bcmc_regs.lock);
2584
2585         ret = ehea_clean_all_portres(port);
2586         if (ret)
2587                 ehea_info("Failed freeing resources for %s. ret=%i",
2588                           dev->name, ret);
2589
2590         ehea_update_firmware_handles();
2591         up(&ehea_fw_handles.lock);
2592
2593         return ret;
2594 }
2595
2596 static int ehea_stop(struct net_device *dev)
2597 {
2598         int ret;
2599         struct ehea_port *port = netdev_priv(dev);
2600
2601         if (netif_msg_ifdown(port))
2602                 ehea_info("disabling port %s", dev->name);
2603
2604         flush_scheduled_work();
2605         down(&port->port_lock);
2606         netif_stop_queue(dev);
2607         port_napi_disable(port);
2608         ret = ehea_down(dev);
2609         up(&port->port_lock);
2610         return ret;
2611 }
2612
2613 void ehea_purge_sq(struct ehea_qp *orig_qp)
2614 {
2615         struct ehea_qp qp = *orig_qp;
2616         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2617         struct ehea_swqe *swqe;
2618         int wqe_index;
2619         int i;
2620
2621         for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2622                 swqe = ehea_get_swqe(&qp, &wqe_index);
2623                 swqe->tx_control |= EHEA_SWQE_PURGE;
2624         }
2625 }
2626
2627 void ehea_flush_sq(struct ehea_port *port)
2628 {
2629         int i;
2630
2631         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2632                 struct ehea_port_res *pr = &port->port_res[i];
2633                 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2634                 int k = 0;
2635                 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2636                         msleep(5);
2637                         if (++k == 20)
2638                                 break;
2639                 }
2640         }
2641 }
2642
2643 int ehea_stop_qps(struct net_device *dev)
2644 {
2645         struct ehea_port *port = netdev_priv(dev);
2646         struct ehea_adapter *adapter = port->adapter;
2647         struct hcp_modify_qp_cb0 *cb0;
2648         int ret = -EIO;
2649         int dret;
2650         int i;
2651         u64 hret;
2652         u64 dummy64 = 0;
2653         u16 dummy16 = 0;
2654
2655         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2656         if (!cb0) {
2657                 ret = -ENOMEM;
2658                 goto out;
2659         }
2660
2661         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2662                 struct ehea_port_res *pr =  &port->port_res[i];
2663                 struct ehea_qp *qp = pr->qp;
2664
2665                 /* Purge send queue */
2666                 ehea_purge_sq(qp);
2667
2668                 /* Disable queue pair */
2669                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2670                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2671                                             cb0);
2672                 if (hret != H_SUCCESS) {
2673                         ehea_error("query_ehea_qp failed (1)");
2674                         goto out;
2675                 }
2676
2677                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2678                 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2679
2680                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2681                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2682                                                             1), cb0, &dummy64,
2683                                              &dummy64, &dummy16, &dummy16);
2684                 if (hret != H_SUCCESS) {
2685                         ehea_error("modify_ehea_qp failed (1)");
2686                         goto out;
2687                 }
2688
2689                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2690                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2691                                             cb0);
2692                 if (hret != H_SUCCESS) {
2693                         ehea_error("query_ehea_qp failed (2)");
2694                         goto out;
2695                 }
2696
2697                 /* deregister shared memory regions */
2698                 dret = ehea_rem_smrs(pr);
2699                 if (dret) {
2700                         ehea_error("unreg shared memory region failed");
2701                         goto out;
2702                 }
2703         }
2704
2705         ret = 0;
2706 out:
2707         kfree(cb0);
2708
2709         return ret;
2710 }
2711
2712 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2713 {
2714         struct ehea_qp qp = *orig_qp;
2715         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2716         struct ehea_rwqe *rwqe;
2717         struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2718         struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2719         struct sk_buff *skb;
2720         u32 lkey = pr->recv_mr.lkey;
2721
2722
2723         int i;
2724         int index;
2725
2726         for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2727                 rwqe = ehea_get_next_rwqe(&qp, 2);
2728                 rwqe->sg_list[0].l_key = lkey;
2729                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2730                 skb = skba_rq2[index];
2731                 if (skb)
2732                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2733         }
2734
2735         for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2736                 rwqe = ehea_get_next_rwqe(&qp, 3);
2737                 rwqe->sg_list[0].l_key = lkey;
2738                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2739                 skb = skba_rq3[index];
2740                 if (skb)
2741                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2742         }
2743 }
2744
2745 int ehea_restart_qps(struct net_device *dev)
2746 {
2747         struct ehea_port *port = netdev_priv(dev);
2748         struct ehea_adapter *adapter = port->adapter;
2749         int ret = 0;
2750         int i;
2751
2752         struct hcp_modify_qp_cb0 *cb0;
2753         u64 hret;
2754         u64 dummy64 = 0;
2755         u16 dummy16 = 0;
2756
2757         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2758         if (!cb0) {
2759                 ret = -ENOMEM;
2760                 goto out;
2761         }
2762
2763         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2764                 struct ehea_port_res *pr =  &port->port_res[i];
2765                 struct ehea_qp *qp = pr->qp;
2766
2767                 ret = ehea_gen_smrs(pr);
2768                 if (ret) {
2769                         ehea_error("creation of shared memory regions failed");
2770                         goto out;
2771                 }
2772
2773                 ehea_update_rqs(qp, pr);
2774
2775                 /* Enable queue pair */
2776                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2777                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2778                                             cb0);
2779                 if (hret != H_SUCCESS) {
2780                         ehea_error("query_ehea_qp failed (1)");
2781                         goto out;
2782                 }
2783
2784                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2785                 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2786
2787                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2788                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2789                                                             1), cb0, &dummy64,
2790                                              &dummy64, &dummy16, &dummy16);
2791                 if (hret != H_SUCCESS) {
2792                         ehea_error("modify_ehea_qp failed (1)");
2793                         goto out;
2794                 }
2795
2796                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2797                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2798                                             cb0);
2799                 if (hret != H_SUCCESS) {
2800                         ehea_error("query_ehea_qp failed (2)");
2801                         goto out;
2802                 }
2803
2804                 /* refill entire queue */
2805                 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2806                 ehea_refill_rq2(pr, 0);
2807                 ehea_refill_rq3(pr, 0);
2808         }
2809 out:
2810         kfree(cb0);
2811
2812         return ret;
2813 }
2814
2815 static void ehea_reset_port(struct work_struct *work)
2816 {
2817         int ret;
2818         struct ehea_port *port =
2819                 container_of(work, struct ehea_port, reset_task);
2820         struct net_device *dev = port->netdev;
2821
2822         port->resets++;
2823         down(&port->port_lock);
2824         netif_stop_queue(dev);
2825
2826         port_napi_disable(port);
2827
2828         ehea_down(dev);
2829
2830         ret = ehea_up(dev);
2831         if (ret)
2832                 goto out;
2833
2834         ehea_set_multicast_list(dev);
2835
2836         if (netif_msg_timer(port))
2837                 ehea_info("Device %s resetted successfully", dev->name);
2838
2839         port_napi_enable(port);
2840
2841         netif_wake_queue(dev);
2842 out:
2843         up(&port->port_lock);
2844         return;
2845 }
2846
2847 static void ehea_rereg_mrs(struct work_struct *work)
2848 {
2849         int ret, i;
2850         struct ehea_adapter *adapter;
2851
2852         down(&dlpar_mem_lock);
2853         ehea_info("LPAR memory enlarged - re-initializing driver");
2854
2855         list_for_each_entry(adapter, &adapter_list, list)
2856                 if (adapter->active_ports) {
2857                         /* Shutdown all ports */
2858                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2859                                 struct ehea_port *port = adapter->port[i];
2860
2861                                 if (port) {
2862                                         struct net_device *dev = port->netdev;
2863
2864                                         if (dev->flags & IFF_UP) {
2865                                                 down(&port->port_lock);
2866                                                 netif_stop_queue(dev);
2867                                                 ehea_flush_sq(port);
2868                                                 ret = ehea_stop_qps(dev);
2869                                                 if (ret) {
2870                                                         up(&port->port_lock);
2871                                                         goto out;
2872                                                 }
2873                                                 port_napi_disable(port);
2874                                                 up(&port->port_lock);
2875                                         }
2876                                 }
2877                         }
2878
2879                         /* Unregister old memory region */
2880                         ret = ehea_rem_mr(&adapter->mr);
2881                         if (ret) {
2882                                 ehea_error("unregister MR failed - driver"
2883                                            " inoperable!");
2884                                 goto out;
2885                         }
2886                 }
2887
2888         ehea_destroy_busmap();
2889         ret = ehea_create_busmap();
2890         if (ret) {
2891                 ehea_error("creating ehea busmap failed");
2892                 goto out;
2893         }
2894
2895         clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2896
2897         list_for_each_entry(adapter, &adapter_list, list)
2898                 if (adapter->active_ports) {
2899                         /* Register new memory region */
2900                         ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2901                         if (ret) {
2902                                 ehea_error("register MR failed - driver"
2903                                            " inoperable!");
2904                                 goto out;
2905                         }
2906
2907                         /* Restart all ports */
2908                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2909                                 struct ehea_port *port = adapter->port[i];
2910
2911                                 if (port) {
2912                                         struct net_device *dev = port->netdev;
2913
2914                                         if (dev->flags & IFF_UP) {
2915                                                 down(&port->port_lock);
2916                                                 port_napi_enable(port);
2917                                                 ret = ehea_restart_qps(dev);
2918                                                 if (!ret)
2919                                                         netif_wake_queue(dev);
2920                                                 up(&port->port_lock);
2921                                         }
2922                                 }
2923                         }
2924                 }
2925        up(&dlpar_mem_lock);
2926        ehea_info("re-initializing driver complete");
2927 out:
2928         return;
2929 }
2930
2931 static void ehea_tx_watchdog(struct net_device *dev)
2932 {
2933         struct ehea_port *port = netdev_priv(dev);
2934
2935         if (netif_carrier_ok(dev) &&
2936             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2937                 schedule_work(&port->reset_task);
2938 }
2939
2940 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2941 {
2942         struct hcp_query_ehea *cb;
2943         u64 hret;
2944         int ret;
2945
2946         cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2947         if (!cb) {
2948                 ret = -ENOMEM;
2949                 goto out;
2950         }
2951
2952         hret = ehea_h_query_ehea(adapter->handle, cb);
2953
2954         if (hret != H_SUCCESS) {
2955                 ret = -EIO;
2956                 goto out_herr;
2957         }
2958
2959         adapter->max_mc_mac = cb->max_mc_mac - 1;
2960         ret = 0;
2961
2962 out_herr:
2963         kfree(cb);
2964 out:
2965         return ret;
2966 }
2967
2968 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2969 {
2970         struct hcp_ehea_port_cb4 *cb4;
2971         u64 hret;
2972         int ret = 0;
2973
2974         *jumbo = 0;
2975
2976         /* (Try to) enable *jumbo frames */
2977         cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2978         if (!cb4) {
2979                 ehea_error("no mem for cb4");
2980                 ret = -ENOMEM;
2981                 goto out;
2982         } else {
2983                 hret = ehea_h_query_ehea_port(port->adapter->handle,
2984                                               port->logical_port_id,
2985                                               H_PORT_CB4,
2986                                               H_PORT_CB4_JUMBO, cb4);
2987                 if (hret == H_SUCCESS) {
2988                         if (cb4->jumbo_frame)
2989                                 *jumbo = 1;
2990                         else {
2991                                 cb4->jumbo_frame = 1;
2992                                 hret = ehea_h_modify_ehea_port(port->adapter->
2993                                                                handle,
2994                                                                port->
2995                                                                logical_port_id,
2996                                                                H_PORT_CB4,
2997                                                                H_PORT_CB4_JUMBO,
2998                                                                cb4);
2999                                 if (hret == H_SUCCESS)
3000                                         *jumbo = 1;
3001                         }
3002                 } else
3003                         ret = -EINVAL;
3004
3005                 kfree(cb4);
3006         }
3007 out:
3008         return ret;
3009 }
3010
3011 static ssize_t ehea_show_port_id(struct device *dev,
3012                                  struct device_attribute *attr, char *buf)
3013 {
3014         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3015         return sprintf(buf, "%d", port->logical_port_id);
3016 }
3017
3018 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3019                    NULL);
3020
3021 static void __devinit logical_port_release(struct device *dev)
3022 {
3023         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3024         of_node_put(port->ofdev.node);
3025 }
3026
3027 static struct device *ehea_register_port(struct ehea_port *port,
3028                                          struct device_node *dn)
3029 {
3030         int ret;
3031
3032         port->ofdev.node = of_node_get(dn);
3033         port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3034         port->ofdev.dev.bus = &ibmebus_bus_type;
3035
3036         sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
3037         port->ofdev.dev.release = logical_port_release;
3038
3039         ret = of_device_register(&port->ofdev);
3040         if (ret) {
3041                 ehea_error("failed to register device. ret=%d", ret);
3042                 goto out;
3043         }
3044
3045         ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3046         if (ret) {
3047                 ehea_error("failed to register attributes, ret=%d", ret);
3048                 goto out_unreg_of_dev;
3049         }
3050
3051         return &port->ofdev.dev;
3052
3053 out_unreg_of_dev:
3054         of_device_unregister(&port->ofdev);
3055 out:
3056         return NULL;
3057 }
3058
3059 static void ehea_unregister_port(struct ehea_port *port)
3060 {
3061         device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3062         of_device_unregister(&port->ofdev);
3063 }
3064
3065 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3066                                          u32 logical_port_id,
3067                                          struct device_node *dn)
3068 {
3069         int ret;
3070         struct net_device *dev;
3071         struct ehea_port *port;
3072         struct device *port_dev;
3073         int jumbo;
3074
3075         /* allocate memory for the port structures */
3076         dev = alloc_etherdev(sizeof(struct ehea_port));
3077
3078         if (!dev) {
3079                 ehea_error("no mem for net_device");
3080                 ret = -ENOMEM;
3081                 goto out_err;
3082         }
3083
3084         port = netdev_priv(dev);
3085
3086         sema_init(&port->port_lock, 1);
3087         port->state = EHEA_PORT_DOWN;
3088         port->sig_comp_iv = sq_entries / 10;
3089
3090         port->adapter = adapter;
3091         port->netdev = dev;
3092         port->logical_port_id = logical_port_id;
3093
3094         port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3095
3096         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3097         if (!port->mc_list) {
3098                 ret = -ENOMEM;
3099                 goto out_free_ethdev;
3100         }
3101
3102         INIT_LIST_HEAD(&port->mc_list->list);
3103
3104         ret = ehea_sense_port_attr(port);
3105         if (ret)
3106                 goto out_free_mc_list;
3107
3108         port_dev = ehea_register_port(port, dn);
3109         if (!port_dev)
3110                 goto out_free_mc_list;
3111
3112         SET_NETDEV_DEV(dev, port_dev);
3113
3114         /* initialize net_device structure */
3115         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3116
3117         dev->open = ehea_open;
3118 #ifdef CONFIG_NET_POLL_CONTROLLER
3119         dev->poll_controller = ehea_netpoll;
3120 #endif
3121         dev->stop = ehea_stop;
3122         dev->hard_start_xmit = ehea_start_xmit;
3123         dev->get_stats = ehea_get_stats;
3124         dev->set_multicast_list = ehea_set_multicast_list;
3125         dev->set_mac_address = ehea_set_mac_addr;
3126         dev->change_mtu = ehea_change_mtu;
3127         dev->vlan_rx_register = ehea_vlan_rx_register;
3128         dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
3129         dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
3130         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3131                       | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3132                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3133                       | NETIF_F_LLTX;
3134         dev->tx_timeout = &ehea_tx_watchdog;
3135         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3136
3137         INIT_WORK(&port->reset_task, ehea_reset_port);
3138         ehea_set_ethtool_ops(dev);
3139
3140         ret = register_netdev(dev);
3141         if (ret) {
3142                 ehea_error("register_netdev failed. ret=%d", ret);
3143                 goto out_unreg_port;
3144         }
3145
3146         port->lro_max_aggr = lro_max_aggr;
3147
3148         ret = ehea_get_jumboframe_status(port, &jumbo);
3149         if (ret)
3150                 ehea_error("failed determining jumbo frame status for %s",
3151                            port->netdev->name);
3152
3153         ehea_info("%s: Jumbo frames are %sabled", dev->name,
3154                   jumbo == 1 ? "en" : "dis");
3155
3156         adapter->active_ports++;
3157
3158         return port;
3159
3160 out_unreg_port:
3161         ehea_unregister_port(port);
3162
3163 out_free_mc_list:
3164         kfree(port->mc_list);
3165
3166 out_free_ethdev:
3167         free_netdev(dev);
3168
3169 out_err:
3170         ehea_error("setting up logical port with id=%d failed, ret=%d",
3171                    logical_port_id, ret);
3172         return NULL;
3173 }
3174
3175 static void ehea_shutdown_single_port(struct ehea_port *port)
3176 {
3177         unregister_netdev(port->netdev);
3178         ehea_unregister_port(port);
3179         kfree(port->mc_list);
3180         free_netdev(port->netdev);
3181         port->adapter->active_ports--;
3182 }
3183
3184 static int ehea_setup_ports(struct ehea_adapter *adapter)
3185 {
3186         struct device_node *lhea_dn;
3187         struct device_node *eth_dn = NULL;
3188
3189         const u32 *dn_log_port_id;
3190         int i = 0;
3191
3192         lhea_dn = adapter->ofdev->node;
3193         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3194
3195                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3196                                                  NULL);
3197                 if (!dn_log_port_id) {
3198                         ehea_error("bad device node: eth_dn name=%s",
3199                                    eth_dn->full_name);
3200                         continue;
3201                 }
3202
3203                 if (ehea_add_adapter_mr(adapter)) {
3204                         ehea_error("creating MR failed");
3205                         of_node_put(eth_dn);
3206                         return -EIO;
3207                 }
3208
3209                 adapter->port[i] = ehea_setup_single_port(adapter,
3210                                                           *dn_log_port_id,
3211                                                           eth_dn);
3212                 if (adapter->port[i])
3213                         ehea_info("%s -> logical port id #%d",
3214                                   adapter->port[i]->netdev->name,
3215                                   *dn_log_port_id);
3216                 else
3217                         ehea_remove_adapter_mr(adapter);
3218
3219                 i++;
3220         };
3221         return 0;
3222 }
3223
3224 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3225                                            u32 logical_port_id)
3226 {
3227         struct device_node *lhea_dn;
3228         struct device_node *eth_dn = NULL;
3229         const u32 *dn_log_port_id;
3230
3231         lhea_dn = adapter->ofdev->node;
3232         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3233
3234                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3235                                                  NULL);
3236                 if (dn_log_port_id)
3237                         if (*dn_log_port_id == logical_port_id)
3238                                 return eth_dn;
3239         };
3240
3241         return NULL;
3242 }
3243
3244 static ssize_t ehea_probe_port(struct device *dev,
3245                                struct device_attribute *attr,
3246                                const char *buf, size_t count)
3247 {
3248         struct ehea_adapter *adapter = dev->driver_data;
3249         struct ehea_port *port;
3250         struct device_node *eth_dn = NULL;
3251         int i;
3252
3253         u32 logical_port_id;
3254
3255         sscanf(buf, "%d", &logical_port_id);
3256
3257         port = ehea_get_port(adapter, logical_port_id);
3258
3259         if (port) {
3260                 ehea_info("adding port with logical port id=%d failed. port "
3261                           "already configured as %s.", logical_port_id,
3262                           port->netdev->name);
3263                 return -EINVAL;
3264         }
3265
3266         eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3267
3268         if (!eth_dn) {
3269                 ehea_info("no logical port with id %d found", logical_port_id);
3270                 return -EINVAL;
3271         }
3272
3273         if (ehea_add_adapter_mr(adapter)) {
3274                 ehea_error("creating MR failed");
3275                 return -EIO;
3276         }
3277
3278         port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3279
3280         of_node_put(eth_dn);
3281
3282         if (port) {
3283                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3284                         if (!adapter->port[i]) {
3285                                 adapter->port[i] = port;
3286                                 break;
3287                         }
3288
3289                 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3290                           logical_port_id);
3291         } else {
3292                 ehea_remove_adapter_mr(adapter);
3293                 return -EIO;
3294         }
3295
3296         return (ssize_t) count;
3297 }
3298
3299 static ssize_t ehea_remove_port(struct device *dev,
3300                                 struct device_attribute *attr,
3301                                 const char *buf, size_t count)
3302 {
3303         struct ehea_adapter *adapter = dev->driver_data;
3304         struct ehea_port *port;
3305         int i;
3306         u32 logical_port_id;
3307
3308         sscanf(buf, "%d", &logical_port_id);
3309
3310         port = ehea_get_port(adapter, logical_port_id);
3311
3312         if (port) {
3313                 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3314                           logical_port_id);
3315
3316                 ehea_shutdown_single_port(port);
3317
3318                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3319                         if (adapter->port[i] == port) {
3320                                 adapter->port[i] = NULL;
3321                                 break;
3322                         }
3323         } else {
3324                 ehea_error("removing port with logical port id=%d failed. port "
3325                            "not configured.", logical_port_id);
3326                 return -EINVAL;
3327         }
3328
3329         ehea_remove_adapter_mr(adapter);
3330
3331         return (ssize_t) count;
3332 }
3333
3334 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3335 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3336
3337 int ehea_create_device_sysfs(struct of_device *dev)
3338 {
3339         int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3340         if (ret)
3341                 goto out;
3342
3343         ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3344 out:
3345         return ret;
3346 }
3347
3348 void ehea_remove_device_sysfs(struct of_device *dev)
3349 {
3350         device_remove_file(&dev->dev, &dev_attr_probe_port);
3351         device_remove_file(&dev->dev, &dev_attr_remove_port);
3352 }
3353
3354 static int __devinit ehea_probe_adapter(struct of_device *dev,
3355                                         const struct of_device_id *id)
3356 {
3357         struct ehea_adapter *adapter;
3358         const u64 *adapter_handle;
3359         int ret;
3360
3361         if (!dev || !dev->node) {
3362                 ehea_error("Invalid ibmebus device probed");
3363                 return -EINVAL;
3364         }
3365         down(&ehea_fw_handles.lock);
3366
3367         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3368         if (!adapter) {
3369                 ret = -ENOMEM;
3370                 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3371                 goto out;
3372         }
3373
3374         list_add(&adapter->list, &adapter_list);
3375
3376         adapter->ofdev = dev;
3377
3378         adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
3379                                          NULL);
3380         if (adapter_handle)
3381                 adapter->handle = *adapter_handle;
3382
3383         if (!adapter->handle) {
3384                 dev_err(&dev->dev, "failed getting handle for adapter"
3385                         " '%s'\n", dev->node->full_name);
3386                 ret = -ENODEV;
3387                 goto out_free_ad;
3388         }
3389
3390         adapter->pd = EHEA_PD_ID;
3391
3392         dev->dev.driver_data = adapter;
3393
3394
3395         /* initialize adapter and ports */
3396         /* get adapter properties */
3397         ret = ehea_sense_adapter_attr(adapter);
3398         if (ret) {
3399                 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3400                 goto out_free_ad;
3401         }
3402
3403         adapter->neq = ehea_create_eq(adapter,
3404                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3405         if (!adapter->neq) {
3406                 ret = -EIO;
3407                 dev_err(&dev->dev, "NEQ creation failed\n");
3408                 goto out_free_ad;
3409         }
3410
3411         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3412                      (unsigned long)adapter);
3413
3414         ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3415                                   ehea_interrupt_neq, IRQF_DISABLED,
3416                                   "ehea_neq", adapter);
3417         if (ret) {
3418                 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3419                 goto out_kill_eq;
3420         }
3421
3422         ret = ehea_create_device_sysfs(dev);
3423         if (ret)
3424                 goto out_free_irq;
3425
3426         ret = ehea_setup_ports(adapter);
3427         if (ret) {
3428                 dev_err(&dev->dev, "setup_ports failed\n");
3429                 goto out_rem_dev_sysfs;
3430         }
3431
3432         ret = 0;
3433         goto out;
3434
3435 out_rem_dev_sysfs:
3436         ehea_remove_device_sysfs(dev);
3437
3438 out_free_irq:
3439         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3440
3441 out_kill_eq:
3442         ehea_destroy_eq(adapter->neq);
3443
3444 out_free_ad:
3445         kfree(adapter);
3446
3447 out:
3448         ehea_update_firmware_handles();
3449         up(&ehea_fw_handles.lock);
3450         return ret;
3451 }
3452
3453 static int __devexit ehea_remove(struct of_device *dev)
3454 {
3455         struct ehea_adapter *adapter = dev->dev.driver_data;
3456         int i;
3457
3458         for (i = 0; i < EHEA_MAX_PORTS; i++)
3459                 if (adapter->port[i]) {
3460                         ehea_shutdown_single_port(adapter->port[i]);
3461                         adapter->port[i] = NULL;
3462                 }
3463
3464         ehea_remove_device_sysfs(dev);
3465
3466         flush_scheduled_work();
3467
3468         down(&ehea_fw_handles.lock);
3469
3470         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3471         tasklet_kill(&adapter->neq_tasklet);
3472
3473         ehea_destroy_eq(adapter->neq);
3474         ehea_remove_adapter_mr(adapter);
3475         list_del(&adapter->list);
3476         kfree(adapter);
3477
3478         ehea_update_firmware_handles();
3479         up(&ehea_fw_handles.lock);
3480
3481         return 0;
3482 }
3483
3484 void ehea_crash_handler(void)
3485 {
3486         int i;
3487
3488         if (ehea_fw_handles.arr)
3489                 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3490                         ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3491                                              ehea_fw_handles.arr[i].fwh,
3492                                              FORCE_FREE);
3493
3494         if (ehea_bcmc_regs.arr)
3495                 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3496                         ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3497                                               ehea_bcmc_regs.arr[i].port_id,
3498                                               ehea_bcmc_regs.arr[i].reg_type,
3499                                               ehea_bcmc_regs.arr[i].macaddr,
3500                                               0, H_DEREG_BCMC);
3501 }
3502
3503 static int ehea_reboot_notifier(struct notifier_block *nb,
3504                                 unsigned long action, void *unused)
3505 {
3506         if (action == SYS_RESTART) {
3507                 ehea_info("Reboot: freeing all eHEA resources");
3508                 ibmebus_unregister_driver(&ehea_driver);
3509         }
3510         return NOTIFY_DONE;
3511 }
3512
3513 static struct notifier_block ehea_reboot_nb = {
3514         .notifier_call = ehea_reboot_notifier,
3515 };
3516
3517 static int check_module_parm(void)
3518 {
3519         int ret = 0;
3520
3521         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3522             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3523                 ehea_info("Bad parameter: rq1_entries");
3524                 ret = -EINVAL;
3525         }
3526         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3527             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3528                 ehea_info("Bad parameter: rq2_entries");
3529                 ret = -EINVAL;
3530         }
3531         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3532             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3533                 ehea_info("Bad parameter: rq3_entries");
3534                 ret = -EINVAL;
3535         }
3536         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3537             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3538                 ehea_info("Bad parameter: sq_entries");
3539                 ret = -EINVAL;
3540         }
3541
3542         return ret;
3543 }
3544
3545 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3546                                       char *buf)
3547 {
3548         return sprintf(buf, "%d", EHEA_CAPABILITIES);
3549 }
3550
3551 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3552                    ehea_show_capabilities, NULL);
3553
3554 int __init ehea_module_init(void)
3555 {
3556         int ret;
3557
3558         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3559                DRV_VERSION);
3560
3561
3562         INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3563         memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3564         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3565
3566         sema_init(&dlpar_mem_lock, 1);
3567         sema_init(&ehea_fw_handles.lock, 1);
3568         sema_init(&ehea_bcmc_regs.lock, 1);
3569
3570         ret = check_module_parm();
3571         if (ret)
3572                 goto out;
3573
3574         ret = ehea_create_busmap();
3575         if (ret)
3576                 goto out;
3577
3578         ret = register_reboot_notifier(&ehea_reboot_nb);
3579         if (ret)
3580                 ehea_info("failed registering reboot notifier");
3581
3582         ret = crash_shutdown_register(&ehea_crash_handler);
3583         if (ret)
3584                 ehea_info("failed registering crash handler");
3585
3586         ret = ibmebus_register_driver(&ehea_driver);
3587         if (ret) {
3588                 ehea_error("failed registering eHEA device driver on ebus");
3589                 goto out2;
3590         }
3591
3592         ret = driver_create_file(&ehea_driver.driver,
3593                                  &driver_attr_capabilities);
3594         if (ret) {
3595                 ehea_error("failed to register capabilities attribute, ret=%d",
3596                            ret);
3597                 goto out3;
3598         }
3599
3600         return ret;
3601
3602 out3:
3603         ibmebus_unregister_driver(&ehea_driver);
3604 out2:
3605         unregister_reboot_notifier(&ehea_reboot_nb);
3606         crash_shutdown_unregister(&ehea_crash_handler);
3607 out:
3608         return ret;
3609 }
3610
3611 static void __exit ehea_module_exit(void)
3612 {
3613         int ret;
3614
3615         flush_scheduled_work();
3616         driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3617         ibmebus_unregister_driver(&ehea_driver);
3618         unregister_reboot_notifier(&ehea_reboot_nb);
3619         ret = crash_shutdown_unregister(&ehea_crash_handler);
3620         if (ret)
3621                 ehea_info("failed unregistering crash handler");
3622         kfree(ehea_fw_handles.arr);
3623         kfree(ehea_bcmc_regs.arr);
3624         ehea_destroy_busmap();
3625 }
3626
3627 module_init(ehea_module_init);
3628 module_exit(ehea_module_exit);