drivers/net/ehea/ehea_main.c

   1 /*
   2  *  linux/drivers/net/ehea/ehea_main.c
   3  *
   4  *  eHEA ethernet device driver for IBM eServer System p
   5  *
   6  *  (C) Copyright IBM Corp. 2006
   7  *
   8  *  Authors:
   9  *       Christoph Raisch <raisch@de.ibm.com>
  10  *       Jan-Bernd Themann <themann@de.ibm.com>
  11  *       Thomas Klein <tklein@de.ibm.com>
  12  *
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2, or (at your option)
  17  * any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/in.h>
  30 #include <linux/ip.h>
  31 #include <linux/tcp.h>
  32 #include <linux/udp.h>
  33 #include <linux/if.h>
  34 #include <linux/list.h>
  35 #include <linux/if_ether.h>
  36 #include <linux/notifier.h>
  37 #include <linux/reboot.h>
  38 #include <linux/memory.h>
  39 #include <asm/kexec.h>
  40 #include <linux/mutex.h>
  41
  42 #include <net/ip.h>
  43
  44 #include "ehea.h"
  45 #include "ehea_qmr.h"
  46 #include "ehea_phyp.h"
  47
  48
  49 MODULE_LICENSE("GPL");
  50 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
  51 MODULE_DESCRIPTION("IBM eServer HEA Driver");
  52 MODULE_VERSION(DRV_VERSION);
  53
  54
  55 static int msg_level = -1;
  56 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
  57 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
  58 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
  59 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
  60 static int use_mcs;
  61 static int use_lro;
  62 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
  63 static int num_tx_qps = EHEA_NUM_TX_QP;
  64 static int prop_carrier_state;
  65
  66 module_param(msg_level, int, 0);
  67 module_param(rq1_entries, int, 0);
  68 module_param(rq2_entries, int, 0);
  69 module_param(rq3_entries, int, 0);
  70 module_param(sq_entries, int, 0);
  71 module_param(prop_carrier_state, int, 0);
  72 module_param(use_mcs, int, 0);
  73 module_param(use_lro, int, 0);
  74 module_param(lro_max_aggr, int, 0);
  75 module_param(num_tx_qps, int, 0);
  76
  77 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
  78 MODULE_PARM_DESC(msg_level, "msg_level");
  79 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
  80                  "port to stack. 1:yes, 0:no.  Default = 0 ");
  81 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
  82                  "[2^x - 1], x = [6..14]. Default = "
  83                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
  84 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
  85                  "[2^x - 1], x = [6..14]. Default = "
  86                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
  87 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
  88                  "[2^x - 1], x = [6..14]. Default = "
  89                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
  90 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue  "
  91                  "[2^x - 1], x = [6..14]. Default = "
  92                  __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
  93 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
  94
  95 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
  96                  __MODULE_STRING(EHEA_LRO_MAX_AGGR));
  97 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
  98                  "Default = 0");
  99
 100 static int port_name_cnt;
 101 static LIST_HEAD(adapter_list);
 102 u64 ehea_driver_flags;
 103 struct work_struct ehea_rereg_mr_task;
 104 static DEFINE_MUTEX(dlpar_mem_lock);
 105 struct ehea_fw_handle_array ehea_fw_handles;
 106 struct ehea_bcmc_reg_array ehea_bcmc_regs;
 107
 108
 109 static int __devinit ehea_probe_adapter(struct of_device *dev,
 110                                         const struct of_device_id *id);
 111
 112 static int __devexit ehea_remove(struct of_device *dev);
 113
 114 static struct of_device_id ehea_device_table[] = {
 115         {
 116                 .name = "lhea",
 117                 .compatible = "IBM,lhea",
 118         },
 119         {},
 120 };
 121
 122 static struct of_platform_driver ehea_driver = {
 123         .name = "ehea",
 124         .match_table = ehea_device_table,
 125         .probe = ehea_probe_adapter,
 126         .remove = ehea_remove,
 127 };
 128
 129 void ehea_dump(void *adr, int len, char *msg)
 130 {
 131         int x;
 132         unsigned char *deb = adr;
 133         for (x = 0; x < len; x += 16) {
 134                 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
 135                           deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
 136                 deb += 16;
 137         }
 138 }
 139
 140 static void ehea_update_firmware_handles(void)
 141 {
 142         struct ehea_fw_handle_entry *arr = NULL;
 143         struct ehea_adapter *adapter;
 144         int num_adapters = 0;
 145         int num_ports = 0;
 146         int num_portres = 0;
 147         int i = 0;
 148         int num_fw_handles, k, l;
 149
 150         /* Determine number of handles */
 151         list_for_each_entry(adapter, &adapter_list, list) {
 152                 num_adapters++;
 153
 154                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 155                         struct ehea_port *port = adapter->port[k];
 156
 157                         if (!port || (port->state != EHEA_PORT_UP))
 158                                 continue;
 159
 160                         num_ports++;
 161                         num_portres += port->num_def_qps + port->num_add_tx_qps;
 162                 }
 163         }
 164
 165         num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
 166                          num_ports * EHEA_NUM_PORT_FW_HANDLES +
 167                          num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
 168
 169         if (num_fw_handles) {
 170                 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
 171                 if (!arr)
 172                         return;  /* Keep the existing array */
 173         } else
 174                 goto out_update;
 175
 176         list_for_each_entry(adapter, &adapter_list, list) {
 177                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 178                         struct ehea_port *port = adapter->port[k];
 179
 180                         if (!port || (port->state != EHEA_PORT_UP))
 181                                 continue;
 182
 183                         for (l = 0;
 184                              l < port->num_def_qps + port->num_add_tx_qps;
 185                              l++) {
 186                                 struct ehea_port_res *pr = &port->port_res[l];
 187
 188                                 arr[i].adh = adapter->handle;
 189                                 arr[i++].fwh = pr->qp->fw_handle;
 190                                 arr[i].adh = adapter->handle;
 191                                 arr[i++].fwh = pr->send_cq->fw_handle;
 192                                 arr[i].adh = adapter->handle;
 193                                 arr[i++].fwh = pr->recv_cq->fw_handle;
 194                                 arr[i].adh = adapter->handle;
 195                                 arr[i++].fwh = pr->eq->fw_handle;
 196                                 arr[i].adh = adapter->handle;
 197                                 arr[i++].fwh = pr->send_mr.handle;
 198                                 arr[i].adh = adapter->handle;
 199                                 arr[i++].fwh = pr->recv_mr.handle;
 200                         }
 201                         arr[i].adh = adapter->handle;
 202                         arr[i++].fwh = port->qp_eq->fw_handle;
 203                 }
 204
 205                 arr[i].adh = adapter->handle;
 206                 arr[i++].fwh = adapter->neq->fw_handle;
 207
 208                 if (adapter->mr.handle) {
 209                         arr[i].adh = adapter->handle;
 210                         arr[i++].fwh = adapter->mr.handle;
 211                 }
 212         }
 213
 214 out_update:
 215         kfree(ehea_fw_handles.arr);
 216         ehea_fw_handles.arr = arr;
 217         ehea_fw_handles.num_entries = i;
 218 }
 219
 220 static void ehea_update_bcmc_registrations(void)
 221 {
 222         struct ehea_bcmc_reg_entry *arr = NULL;
 223         struct ehea_adapter *adapter;
 224         struct ehea_mc_list *mc_entry;
 225         int num_registrations = 0;
 226         int i = 0;
 227         int k;
 228
 229         /* Determine number of registrations */
 230         list_for_each_entry(adapter, &adapter_list, list)
 231                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 232                         struct ehea_port *port = adapter->port[k];
 233
 234                         if (!port || (port->state != EHEA_PORT_UP))
 235                                 continue;
 236
 237                         num_registrations += 2; /* Broadcast registrations */
 238
 239                         list_for_each_entry(mc_entry, &port->mc_list->list,list)
 240                                 num_registrations += 2;
 241                 }
 242
 243         if (num_registrations) {
 244                 arr = kzalloc(num_registrations * sizeof(*arr), GFP_KERNEL);
 245                 if (!arr)
 246                         return;  /* Keep the existing array */
 247         } else
 248                 goto out_update;
 249
 250         list_for_each_entry(adapter, &adapter_list, list) {
 251                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 252                         struct ehea_port *port = adapter->port[k];
 253
 254                         if (!port || (port->state != EHEA_PORT_UP))
 255                                 continue;
 256
 257                         arr[i].adh = adapter->handle;
 258                         arr[i].port_id = port->logical_port_id;
 259                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 260                                           EHEA_BCMC_UNTAGGED;
 261                         arr[i++].macaddr = port->mac_addr;
 262
 263                         arr[i].adh = adapter->handle;
 264                         arr[i].port_id = port->logical_port_id;
 265                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 266                                           EHEA_BCMC_VLANID_ALL;
 267                         arr[i++].macaddr = port->mac_addr;
 268
 269                         list_for_each_entry(mc_entry,
 270                                             &port->mc_list->list, list) {
 271                                 arr[i].adh = adapter->handle;
 272                                 arr[i].port_id = port->logical_port_id;
 273                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 274                                                   EHEA_BCMC_MULTICAST |
 275                                                   EHEA_BCMC_UNTAGGED;
 276                                 arr[i++].macaddr = mc_entry->macaddr;
 277
 278                                 arr[i].adh = adapter->handle;
 279                                 arr[i].port_id = port->logical_port_id;
 280                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 281                                                   EHEA_BCMC_MULTICAST |
 282                                                   EHEA_BCMC_VLANID_ALL;
 283                                 arr[i++].macaddr = mc_entry->macaddr;
 284                         }
 285                 }
 286         }
 287
 288 out_update:
 289         kfree(ehea_bcmc_regs.arr);
 290         ehea_bcmc_regs.arr = arr;
 291         ehea_bcmc_regs.num_entries = i;
 292 }
 293
 294 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
 295 {
 296         struct ehea_port *port = netdev_priv(dev);
 297         struct net_device_stats *stats = &port->stats;
 298         struct hcp_ehea_port_cb2 *cb2;
 299         u64 hret, rx_packets, tx_packets;
 300         int i;
 301
 302         memset(stats, 0, sizeof(*stats));
 303
 304         cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
 305         if (!cb2) {
 306                 ehea_error("no mem for cb2");
 307                 goto out;
 308         }
 309
 310         hret = ehea_h_query_ehea_port(port->adapter->handle,
 311                                       port->logical_port_id,
 312                                       H_PORT_CB2, H_PORT_CB2_ALL, cb2);
 313         if (hret != H_SUCCESS) {
 314                 ehea_error("query_ehea_port failed");
 315                 goto out_herr;
 316         }
 317
 318         if (netif_msg_hw(port))
 319                 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
 320
 321         rx_packets = 0;
 322         for (i = 0; i < port->num_def_qps; i++)
 323                 rx_packets += port->port_res[i].rx_packets;
 324
 325         tx_packets = 0;
 326         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
 327                 tx_packets += port->port_res[i].tx_packets;
 328
 329         stats->tx_packets = tx_packets;
 330         stats->multicast = cb2->rxmcp;
 331         stats->rx_errors = cb2->rxuerr;
 332         stats->rx_bytes = cb2->rxo;
 333         stats->tx_bytes = cb2->txo;
 334         stats->rx_packets = rx_packets;
 335
 336 out_herr:
 337         kfree(cb2);
 338 out:
 339         return stats;
 340 }
 341
 342 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 343 {
 344         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 345         struct net_device *dev = pr->port->netdev;
 346         int max_index_mask = pr->rq1_skba.len - 1;
 347         int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
 348         int adder = 0;
 349         int i;
 350
 351         pr->rq1_skba.os_skbs = 0;
 352
 353         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 354                 if (nr_of_wqes > 0)
 355                         pr->rq1_skba.index = index;
 356                 pr->rq1_skba.os_skbs = fill_wqes;
 357                 return;
 358         }
 359
 360         for (i = 0; i < fill_wqes; i++) {
 361                 if (!skb_arr_rq1[index]) {
 362                         skb_arr_rq1[index] = netdev_alloc_skb(dev,
 363                                                               EHEA_L_PKT_SIZE);
 364                         if (!skb_arr_rq1[index]) {
 365                                 pr->rq1_skba.os_skbs = fill_wqes - i;
 366                                 ehea_error("%s: no mem for skb/%d wqes filled",
 367                                            dev->name, i);
 368                                 break;
 369                         }
 370                 }
 371                 index--;
 372                 index &= max_index_mask;
 373                 adder++;
 374         }
 375
 376         if (adder == 0)
 377                 return;
 378
 379         /* Ring doorbell */
 380         ehea_update_rq1a(pr->qp, adder);
 381 }
 382
 383 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 384 {
 385         int ret = 0;
 386         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 387         struct net_device *dev = pr->port->netdev;
 388         int i;
 389
 390         for (i = 0; i < pr->rq1_skba.len; i++) {
 391                 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
 392                 if (!skb_arr_rq1[i]) {
 393                         ehea_error("%s: no mem for skb/%d wqes filled",
 394                                    dev->name, i);
 395                         ret = -ENOMEM;
 396                         goto out;
 397                 }
 398         }
 399         /* Ring doorbell */
 400         ehea_update_rq1a(pr->qp, nr_rq1a);
 401 out:
 402         return ret;
 403 }
 404
 405 static int ehea_refill_rq_def(struct ehea_port_res *pr,
 406                               struct ehea_q_skb_arr *q_skba, int rq_nr,
 407                               int num_wqes, int wqe_type, int packet_size)
 408 {
 409         struct net_device *dev = pr->port->netdev;
 410         struct ehea_qp *qp = pr->qp;
 411         struct sk_buff **skb_arr = q_skba->arr;
 412         struct ehea_rwqe *rwqe;
 413         int i, index, max_index_mask, fill_wqes;
 414         int adder = 0;
 415         int ret = 0;
 416
 417         fill_wqes = q_skba->os_skbs + num_wqes;
 418         q_skba->os_skbs = 0;
 419
 420         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 421                 q_skba->os_skbs = fill_wqes;
 422                 return ret;
 423         }
 424
 425         index = q_skba->index;
 426         max_index_mask = q_skba->len - 1;
 427         for (i = 0; i < fill_wqes; i++) {
 428                 u64 tmp_addr;
 429                 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
 430                 if (!skb) {
 431                         ehea_error("%s: no mem for skb/%d wqes filled",
 432                                    pr->port->netdev->name, i);
 433                         q_skba->os_skbs = fill_wqes - i;
 434                         ret = -ENOMEM;
 435                         break;
 436                 }
 437                 skb_reserve(skb, NET_IP_ALIGN);
 438
 439                 skb_arr[index] = skb;
 440                 tmp_addr = ehea_map_vaddr(skb->data);
 441                 if (tmp_addr == -1) {
 442                         dev_kfree_skb(skb);
 443                         q_skba->os_skbs = fill_wqes - i;
 444                         ret = 0;
 445                         break;
 446                 }
 447
 448                 rwqe = ehea_get_next_rwqe(qp, rq_nr);
 449                 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
 450                             | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
 451                 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
 452                 rwqe->sg_list[0].vaddr = tmp_addr;
 453                 rwqe->sg_list[0].len = packet_size;
 454                 rwqe->data_segments = 1;
 455
 456                 index++;
 457                 index &= max_index_mask;
 458                 adder++;
 459         }
 460
 461         q_skba->index = index;
 462         if (adder == 0)
 463                 goto out;
 464
 465         /* Ring doorbell */
 466         iosync();
 467         if (rq_nr == 2)
 468                 ehea_update_rq2a(pr->qp, adder);
 469         else
 470                 ehea_update_rq3a(pr->qp, adder);
 471 out:
 472         return ret;
 473 }
 474
 475
 476 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
 477 {
 478         return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
 479                                   nr_of_wqes, EHEA_RWQE2_TYPE,
 480                                   EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
 481 }
 482
 483
 484 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
 485 {
 486         return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
 487                                   nr_of_wqes, EHEA_RWQE3_TYPE,
 488                                   EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
 489 }
 490
 491 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
 492 {
 493         *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
 494         if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
 495                 return 0;
 496         if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
 497             (cqe->header_length == 0))
 498                 return 0;
 499         return -EINVAL;
 500 }
 501
 502 static inline void ehea_fill_skb(struct net_device *dev,
 503                                  struct sk_buff *skb, struct ehea_cqe *cqe)
 504 {
 505         int length = cqe->num_bytes_transfered - 4;     /*remove CRC */
 506
 507         skb_put(skb, length);
 508         skb->ip_summed = CHECKSUM_UNNECESSARY;
 509         skb->protocol = eth_type_trans(skb, dev);
 510 }
 511
 512 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
 513                                                int arr_len,
 514                                                struct ehea_cqe *cqe)
 515 {
 516         int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 517         struct sk_buff *skb;
 518         void *pref;
 519         int x;
 520
 521         x = skb_index + 1;
 522         x &= (arr_len - 1);
 523
 524         pref = skb_array[x];
 525         prefetchw(pref);
 526         prefetchw(pref + EHEA_CACHE_LINE);
 527
 528         pref = (skb_array[x]->data);
 529         prefetch(pref);
 530         prefetch(pref + EHEA_CACHE_LINE);
 531         prefetch(pref + EHEA_CACHE_LINE * 2);
 532         prefetch(pref + EHEA_CACHE_LINE * 3);
 533         skb = skb_array[skb_index];
 534         skb_array[skb_index] = NULL;
 535         return skb;
 536 }
 537
 538 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
 539                                                   int arr_len, int wqe_index)
 540 {
 541         struct sk_buff *skb;
 542         void *pref;
 543         int x;
 544
 545         x = wqe_index + 1;
 546         x &= (arr_len - 1);
 547
 548         pref = skb_array[x];
 549         prefetchw(pref);
 550         prefetchw(pref + EHEA_CACHE_LINE);
 551
 552         pref = (skb_array[x]->data);
 553         prefetchw(pref);
 554         prefetchw(pref + EHEA_CACHE_LINE);
 555
 556         skb = skb_array[wqe_index];
 557         skb_array[wqe_index] = NULL;
 558         return skb;
 559 }
 560
 561 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
 562                                  struct ehea_cqe *cqe, int *processed_rq2,
 563                                  int *processed_rq3)
 564 {
 565         struct sk_buff *skb;
 566
 567         if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
 568                 pr->p_stats.err_tcp_cksum++;
 569         if (cqe->status & EHEA_CQE_STAT_ERR_IP)
 570                 pr->p_stats.err_ip_cksum++;
 571         if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
 572                 pr->p_stats.err_frame_crc++;
 573
 574         if (rq == 2) {
 575                 *processed_rq2 += 1;
 576                 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
 577                 dev_kfree_skb(skb);
 578         } else if (rq == 3) {
 579                 *processed_rq3 += 1;
 580                 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
 581                 dev_kfree_skb(skb);
 582         }
 583
 584         if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
 585                 if (netif_msg_rx_err(pr->port)) {
 586                         ehea_error("Critical receive error for QP %d. "
 587                                    "Resetting port.", pr->qp->init_attr.qp_nr);
 588                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 589                 }
 590                 schedule_work(&pr->port->reset_task);
 591                 return 1;
 592         }
 593
 594         return 0;
 595 }
 596
 597 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
 598                        void **tcph, u64 *hdr_flags, void *priv)
 599 {
 600         struct ehea_cqe *cqe = priv;
 601         unsigned int ip_len;
 602         struct iphdr *iph;
 603
 604         /* non tcp/udp packets */
 605         if (!cqe->header_length)
 606                 return -1;
 607
 608         /* non tcp packet */
 609         skb_reset_network_header(skb);
 610         iph = ip_hdr(skb);
 611         if (iph->protocol != IPPROTO_TCP)
 612                 return -1;
 613
 614         ip_len = ip_hdrlen(skb);
 615         skb_set_transport_header(skb, ip_len);
 616         *tcph = tcp_hdr(skb);
 617
 618         /* check if ip header and tcp header are complete */
 619         if (iph->tot_len < ip_len + tcp_hdrlen(skb))
 620                 return -1;
 621
 622         *hdr_flags = LRO_IPV4 | LRO_TCP;
 623         *iphdr = iph;
 624
 625         return 0;
 626 }
 627
 628 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
 629                           struct sk_buff *skb)
 630 {
 631         int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
 632                 && pr->port->vgrp;
 633
 634         if (use_lro) {
 635                 if (vlan_extracted)
 636                         lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
 637                                                      pr->port->vgrp,
 638                                                      cqe->vlan_tag,
 639                                                      cqe);
 640                 else
 641                         lro_receive_skb(&pr->lro_mgr, skb, cqe);
 642         } else {
 643                 if (vlan_extracted)
 644                         vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
 645                                                  cqe->vlan_tag);
 646                 else
 647                         netif_receive_skb(skb);
 648         }
 649 }
 650
 651 static int ehea_proc_rwqes(struct net_device *dev,
 652                            struct ehea_port_res *pr,
 653                            int budget)
 654 {
 655         struct ehea_port *port = pr->port;
 656         struct ehea_qp *qp = pr->qp;
 657         struct ehea_cqe *cqe;
 658         struct sk_buff *skb;
 659         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 660         struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
 661         struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
 662         int skb_arr_rq1_len = pr->rq1_skba.len;
 663         int skb_arr_rq2_len = pr->rq2_skba.len;
 664         int skb_arr_rq3_len = pr->rq3_skba.len;
 665         int processed, processed_rq1, processed_rq2, processed_rq3;
 666         int wqe_index, last_wqe_index, rq, port_reset;
 667
 668         processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
 669         last_wqe_index = 0;
 670
 671         cqe = ehea_poll_rq1(qp, &wqe_index);
 672         while ((processed < budget) && cqe) {
 673                 ehea_inc_rq1(qp);
 674                 processed_rq1++;
 675                 processed++;
 676                 if (netif_msg_rx_status(port))
 677                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 678
 679                 last_wqe_index = wqe_index;
 680                 rmb();
 681                 if (!ehea_check_cqe(cqe, &rq)) {
 682                         if (rq == 1) {
 683                                 /* LL RQ1 */
 684                                 skb = get_skb_by_index_ll(skb_arr_rq1,
 685                                                           skb_arr_rq1_len,
 686                                                           wqe_index);
 687                                 if (unlikely(!skb)) {
 688                                         if (netif_msg_rx_err(port))
 689                                                 ehea_error("LL rq1: skb=NULL");
 690
 691                                         skb = netdev_alloc_skb(dev,
 692                                                                EHEA_L_PKT_SIZE);
 693                                         if (!skb)
 694                                                 break;
 695                                 }
 696                                 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
 697                                                  cqe->num_bytes_transfered - 4);
 698                                 ehea_fill_skb(dev, skb, cqe);
 699                         } else if (rq == 2) {
 700                                 /* RQ2 */
 701                                 skb = get_skb_by_index(skb_arr_rq2,
 702                                                        skb_arr_rq2_len, cqe);
 703                                 if (unlikely(!skb)) {
 704                                         if (netif_msg_rx_err(port))
 705                                                 ehea_error("rq2: skb=NULL");
 706                                         break;
 707                                 }
 708                                 ehea_fill_skb(dev, skb, cqe);
 709                                 processed_rq2++;
 710                         } else {
 711                                 /* RQ3 */
 712                                 skb = get_skb_by_index(skb_arr_rq3,
 713                                                        skb_arr_rq3_len, cqe);
 714                                 if (unlikely(!skb)) {
 715                                         if (netif_msg_rx_err(port))
 716                                                 ehea_error("rq3: skb=NULL");
 717                                         break;
 718                                 }
 719                                 ehea_fill_skb(dev, skb, cqe);
 720                                 processed_rq3++;
 721                         }
 722
 723                         ehea_proc_skb(pr, cqe, skb);
 724                         dev->last_rx = jiffies;
 725                 } else {
 726                         pr->p_stats.poll_receive_errors++;
 727                         port_reset = ehea_treat_poll_error(pr, rq, cqe,
 728                                                            &processed_rq2,
 729                                                            &processed_rq3);
 730                         if (port_reset)
 731                                 break;
 732                 }
 733                 cqe = ehea_poll_rq1(qp, &wqe_index);
 734         }
 735         if (use_lro)
 736                 lro_flush_all(&pr->lro_mgr);
 737
 738         pr->rx_packets += processed;
 739
 740         ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
 741         ehea_refill_rq2(pr, processed_rq2);
 742         ehea_refill_rq3(pr, processed_rq3);
 743
 744         return processed;
 745 }
 746
 747 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
 748 {
 749         struct sk_buff *skb;
 750         struct ehea_cq *send_cq = pr->send_cq;
 751         struct ehea_cqe *cqe;
 752         int quota = my_quota;
 753         int cqe_counter = 0;
 754         int swqe_av = 0;
 755         int index;
 756         unsigned long flags;
 757
 758         cqe = ehea_poll_cq(send_cq);
 759         while (cqe && (quota > 0)) {
 760                 ehea_inc_cq(send_cq);
 761
 762                 cqe_counter++;
 763                 rmb();
 764                 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
 765                         ehea_error("Send Completion Error: Resetting port");
 766                         if (netif_msg_tx_err(pr->port))
 767                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
 768                         schedule_work(&pr->port->reset_task);
 769                         break;
 770                 }
 771
 772                 if (netif_msg_tx_done(pr->port))
 773                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 774
 775                 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
 776                            == EHEA_SWQE2_TYPE)) {
 777
 778                         index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 779                         skb = pr->sq_skba.arr[index];
 780                         dev_kfree_skb(skb);
 781                         pr->sq_skba.arr[index] = NULL;
 782                 }
 783
 784                 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
 785                 quota--;
 786
 787                 cqe = ehea_poll_cq(send_cq);
 788         };
 789
 790         ehea_update_feca(send_cq, cqe_counter);
 791         atomic_add(swqe_av, &pr->swqe_avail);
 792
 793         spin_lock_irqsave(&pr->netif_queue, flags);
 794
 795         if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
 796                                   >= pr->swqe_refill_th)) {
 797                 netif_wake_queue(pr->port->netdev);
 798                 pr->queue_stopped = 0;
 799         }
 800         spin_unlock_irqrestore(&pr->netif_queue, flags);
 801
 802         return cqe;
 803 }
 804
 805 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
 806 #define EHEA_POLL_MAX_CQES 65535
 807
 808 static int ehea_poll(struct napi_struct *napi, int budget)
 809 {
 810         struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
 811                                                 napi);
 812         struct net_device *dev = pr->port->netdev;
 813         struct ehea_cqe *cqe;
 814         struct ehea_cqe *cqe_skb = NULL;
 815         int force_irq, wqe_index;
 816         int rx = 0;
 817
 818         force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
 819         cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 820
 821         if (!force_irq)
 822                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 823
 824         while ((rx != budget) || force_irq) {
 825                 pr->poll_counter = 0;
 826                 force_irq = 0;
 827                 netif_rx_complete(dev, napi);
 828                 ehea_reset_cq_ep(pr->recv_cq);
 829                 ehea_reset_cq_ep(pr->send_cq);
 830                 ehea_reset_cq_n1(pr->recv_cq);
 831                 ehea_reset_cq_n1(pr->send_cq);
 832                 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
 833                 cqe_skb = ehea_poll_cq(pr->send_cq);
 834
 835                 if (!cqe && !cqe_skb)
 836                         return rx;
 837
 838                 if (!netif_rx_reschedule(dev, napi))
 839                         return rx;
 840
 841                 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 842                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 843         }
 844
 845         pr->poll_counter++;
 846         return rx;
 847 }
 848
 849 #ifdef CONFIG_NET_POLL_CONTROLLER
 850 static void ehea_netpoll(struct net_device *dev)
 851 {
 852         struct ehea_port *port = netdev_priv(dev);
 853         int i;
 854
 855         for (i = 0; i < port->num_def_qps; i++)
 856                 netif_rx_schedule(dev, &port->port_res[i].napi);
 857 }
 858 #endif
 859
 860 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 861 {
 862         struct ehea_port_res *pr = param;
 863
 864         netif_rx_schedule(pr->port->netdev, &pr->napi);
 865
 866         return IRQ_HANDLED;
 867 }
 868
 869 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 870 {
 871         struct ehea_port *port = param;
 872         struct ehea_eqe *eqe;
 873         struct ehea_qp *qp;
 874         u32 qp_token;
 875
 876         eqe = ehea_poll_eq(port->qp_eq);
 877
 878         while (eqe) {
 879                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 880                 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
 881                            eqe->entry, qp_token);
 882
 883                 qp = port->port_res[qp_token].qp;
 884                 ehea_error_data(port->adapter, qp->fw_handle);
 885                 eqe = ehea_poll_eq(port->qp_eq);
 886         }
 887
 888         schedule_work(&port->reset_task);
 889
 890         return IRQ_HANDLED;
 891 }
 892
 893 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 894                                        int logical_port)
 895 {
 896         int i;
 897
 898         for (i = 0; i < EHEA_MAX_PORTS; i++)
 899                 if (adapter->port[i])
 900                         if (adapter->port[i]->logical_port_id == logical_port)
 901                                 return adapter->port[i];
 902         return NULL;
 903 }
 904
 905 int ehea_sense_port_attr(struct ehea_port *port)
 906 {
 907         int ret;
 908         u64 hret;
 909         struct hcp_ehea_port_cb0 *cb0;
 910
 911         /* may be called via ehea_neq_tasklet() */
 912         cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
 913         if (!cb0) {
 914                 ehea_error("no mem for cb0");
 915                 ret = -ENOMEM;
 916                 goto out;
 917         }
 918
 919         hret = ehea_h_query_ehea_port(port->adapter->handle,
 920                                       port->logical_port_id, H_PORT_CB0,
 921                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 922                                       cb0);
 923         if (hret != H_SUCCESS) {
 924                 ret = -EIO;
 925                 goto out_free;
 926         }
 927
 928         /* MAC address */
 929         port->mac_addr = cb0->port_mac_addr << 16;
 930
 931         if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
 932                 ret = -EADDRNOTAVAIL;
 933                 goto out_free;
 934         }
 935
 936         /* Port speed */
 937         switch (cb0->port_speed) {
 938         case H_SPEED_10M_H:
 939                 port->port_speed = EHEA_SPEED_10M;
 940                 port->full_duplex = 0;
 941                 break;
 942         case H_SPEED_10M_F:
 943                 port->port_speed = EHEA_SPEED_10M;
 944                 port->full_duplex = 1;
 945                 break;
 946         case H_SPEED_100M_H:
 947                 port->port_speed = EHEA_SPEED_100M;
 948                 port->full_duplex = 0;
 949                 break;
 950         case H_SPEED_100M_F:
 951                 port->port_speed = EHEA_SPEED_100M;
 952                 port->full_duplex = 1;
 953                 break;
 954         case H_SPEED_1G_F:
 955                 port->port_speed = EHEA_SPEED_1G;
 956                 port->full_duplex = 1;
 957                 break;
 958         case H_SPEED_10G_F:
 959                 port->port_speed = EHEA_SPEED_10G;
 960                 port->full_duplex = 1;
 961                 break;
 962         default:
 963                 port->port_speed = 0;
 964                 port->full_duplex = 0;
 965                 break;
 966         }
 967
 968         port->autoneg = 1;
 969         port->num_mcs = cb0->num_default_qps;
 970
 971         /* Number of default QPs */
 972         if (use_mcs)
 973                 port->num_def_qps = cb0->num_default_qps;
 974         else
 975                 port->num_def_qps = 1;
 976
 977         if (!port->num_def_qps) {
 978                 ret = -EINVAL;
 979                 goto out_free;
 980         }
 981
 982         port->num_tx_qps = num_tx_qps;
 983
 984         if (port->num_def_qps >= port->num_tx_qps)
 985                 port->num_add_tx_qps = 0;
 986         else
 987                 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
 988
 989         ret = 0;
 990 out_free:
 991         if (ret || netif_msg_probe(port))
 992                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
 993         kfree(cb0);
 994 out:
 995         return ret;
 996 }
 997
 998 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
 999 {
1000         struct hcp_ehea_port_cb4 *cb4;
1001         u64 hret;
1002         int ret = 0;
1003
1004         cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1005         if (!cb4) {
1006                 ehea_error("no mem for cb4");
1007                 ret = -ENOMEM;
1008                 goto out;
1009         }
1010
1011         cb4->port_speed = port_speed;
1012
1013         netif_carrier_off(port->netdev);
1014
1015         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1016                                        port->logical_port_id,
1017                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1018         if (hret == H_SUCCESS) {
1019                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1020
1021                 hret = ehea_h_query_ehea_port(port->adapter->handle,
1022                                               port->logical_port_id,
1023                                               H_PORT_CB4, H_PORT_CB4_SPEED,
1024                                               cb4);
1025                 if (hret == H_SUCCESS) {
1026                         switch (cb4->port_speed) {
1027                         case H_SPEED_10M_H:
1028                                 port->port_speed = EHEA_SPEED_10M;
1029                                 port->full_duplex = 0;
1030                                 break;
1031                         case H_SPEED_10M_F:
1032                                 port->port_speed = EHEA_SPEED_10M;
1033                                 port->full_duplex = 1;
1034                                 break;
1035                         case H_SPEED_100M_H:
1036                                 port->port_speed = EHEA_SPEED_100M;
1037                                 port->full_duplex = 0;
1038                                 break;
1039                         case H_SPEED_100M_F:
1040                                 port->port_speed = EHEA_SPEED_100M;
1041                                 port->full_duplex = 1;
1042                                 break;
1043                         case H_SPEED_1G_F:
1044                                 port->port_speed = EHEA_SPEED_1G;
1045                                 port->full_duplex = 1;
1046                                 break;
1047                         case H_SPEED_10G_F:
1048                                 port->port_speed = EHEA_SPEED_10G;
1049                                 port->full_duplex = 1;
1050                                 break;
1051                         default:
1052                                 port->port_speed = 0;
1053                                 port->full_duplex = 0;
1054                                 break;
1055                         }
1056                 } else {
1057                         ehea_error("Failed sensing port speed");
1058                         ret = -EIO;
1059                 }
1060         } else {
1061                 if (hret == H_AUTHORITY) {
1062                         ehea_info("Hypervisor denied setting port speed");
1063                         ret = -EPERM;
1064                 } else {
1065                         ret = -EIO;
1066                         ehea_error("Failed setting port speed");
1067                 }
1068         }
1069         if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1070                 netif_carrier_on(port->netdev);
1071
1072         kfree(cb4);
1073 out:
1074         return ret;
1075 }
1076
1077 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1078 {
1079         int ret;
1080         u8 ec;
1081         u8 portnum;
1082         struct ehea_port *port;
1083
1084         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1085         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1086         port = ehea_get_port(adapter, portnum);
1087
1088         switch (ec) {
1089         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
1090
1091                 if (!port) {
1092                         ehea_error("unknown portnum %x", portnum);
1093                         break;
1094                 }
1095
1096                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1097                         if (!netif_carrier_ok(port->netdev)) {
1098                                 ret = ehea_sense_port_attr(port);
1099                                 if (ret) {
1100                                         ehea_error("failed resensing port "
1101                                                    "attributes");
1102                                         break;
1103                                 }
1104
1105                                 if (netif_msg_link(port))
1106                                         ehea_info("%s: Logical port up: %dMbps "
1107                                                   "%s Duplex",
1108                                                   port->netdev->name,
1109                                                   port->port_speed,
1110                                                   port->full_duplex ==
1111                                                   1 ? "Full" : "Half");
1112
1113                                 netif_carrier_on(port->netdev);
1114                                 netif_wake_queue(port->netdev);
1115                         }
1116                 } else
1117                         if (netif_carrier_ok(port->netdev)) {
1118                                 if (netif_msg_link(port))
1119                                         ehea_info("%s: Logical port down",
1120                                                   port->netdev->name);
1121                                 netif_carrier_off(port->netdev);
1122                                 netif_stop_queue(port->netdev);
1123                         }
1124
1125                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1126                         port->phy_link = EHEA_PHY_LINK_UP;
1127                         if (netif_msg_link(port))
1128                                 ehea_info("%s: Physical port up",
1129                                           port->netdev->name);
1130                         if (prop_carrier_state)
1131                                 netif_carrier_on(port->netdev);
1132                 } else {
1133                         port->phy_link = EHEA_PHY_LINK_DOWN;
1134                         if (netif_msg_link(port))
1135                                 ehea_info("%s: Physical port down",
1136                                           port->netdev->name);
1137                         if (prop_carrier_state)
1138                                 netif_carrier_off(port->netdev);
1139                 }
1140
1141                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1142                         ehea_info("External switch port is primary port");
1143                 else
1144                         ehea_info("External switch port is backup port");
1145
1146                 break;
1147         case EHEA_EC_ADAPTER_MALFUNC:
1148                 ehea_error("Adapter malfunction");
1149                 break;
1150         case EHEA_EC_PORT_MALFUNC:
1151                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1152                 netif_carrier_off(port->netdev);
1153                 netif_stop_queue(port->netdev);
1154                 break;
1155         default:
1156                 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
1157                 break;
1158         }
1159 }
1160
1161 static void ehea_neq_tasklet(unsigned long data)
1162 {
1163         struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1164         struct ehea_eqe *eqe;
1165         u64 event_mask;
1166
1167         eqe = ehea_poll_eq(adapter->neq);
1168         ehea_debug("eqe=%p", eqe);
1169
1170         while (eqe) {
1171                 ehea_debug("*eqe=%lx", eqe->entry);
1172                 ehea_parse_eqe(adapter, eqe->entry);
1173                 eqe = ehea_poll_eq(adapter->neq);
1174                 ehea_debug("next eqe=%p", eqe);
1175         }
1176
1177         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1178                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1179                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1180
1181         ehea_h_reset_events(adapter->handle,
1182                             adapter->neq->fw_handle, event_mask);
1183 }
1184
1185 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1186 {
1187         struct ehea_adapter *adapter = param;
1188         tasklet_hi_schedule(&adapter->neq_tasklet);
1189         return IRQ_HANDLED;
1190 }
1191
1192
1193 static int ehea_fill_port_res(struct ehea_port_res *pr)
1194 {
1195         int ret;
1196         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1197
1198         ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1199                                      - init_attr->act_nr_rwqes_rq2
1200                                      - init_attr->act_nr_rwqes_rq3 - 1);
1201
1202         ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1203
1204         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1205
1206         return ret;
1207 }
1208
1209 static int ehea_reg_interrupts(struct net_device *dev)
1210 {
1211         struct ehea_port *port = netdev_priv(dev);
1212         struct ehea_port_res *pr;
1213         int i, ret;
1214
1215
1216         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1217                  dev->name);
1218
1219         ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1220                                   ehea_qp_aff_irq_handler,
1221                                   IRQF_DISABLED, port->int_aff_name, port);
1222         if (ret) {
1223                 ehea_error("failed registering irq for qp_aff_irq_handler:"
1224                            "ist=%X", port->qp_eq->attr.ist1);
1225                 goto out_free_qpeq;
1226         }
1227
1228         if (netif_msg_ifup(port))
1229                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1230                           "registered", port->qp_eq->attr.ist1);
1231
1232
1233         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1234                 pr = &port->port_res[i];
1235                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1236                          "%s-queue%d", dev->name, i);
1237                 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1238                                           ehea_recv_irq_handler,
1239                                           IRQF_DISABLED, pr->int_send_name,
1240                                           pr);
1241                 if (ret) {
1242                         ehea_error("failed registering irq for ehea_queue "
1243                                    "port_res_nr:%d, ist=%X", i,
1244                                    pr->eq->attr.ist1);
1245                         goto out_free_req;
1246                 }
1247                 if (netif_msg_ifup(port))
1248                         ehea_info("irq_handle 0x%X for function ehea_queue_int "
1249                                   "%d registered", pr->eq->attr.ist1, i);
1250         }
1251 out:
1252         return ret;
1253
1254
1255 out_free_req:
1256         while (--i >= 0) {
1257                 u32 ist = port->port_res[i].eq->attr.ist1;
1258                 ibmebus_free_irq(ist, &port->port_res[i]);
1259         }
1260
1261 out_free_qpeq:
1262         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1263         i = port->num_def_qps;
1264
1265         goto out;
1266
1267 }
1268
1269 static void ehea_free_interrupts(struct net_device *dev)
1270 {
1271         struct ehea_port *port = netdev_priv(dev);
1272         struct ehea_port_res *pr;
1273         int i;
1274
1275         /* send */
1276
1277         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1278                 pr = &port->port_res[i];
1279                 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1280                 if (netif_msg_intr(port))
1281                         ehea_info("free send irq for res %d with handle 0x%X",
1282                                   i, pr->eq->attr.ist1);
1283         }
1284
1285         /* associated events */
1286         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1287         if (netif_msg_intr(port))
1288                 ehea_info("associated event interrupt for handle 0x%X freed",
1289                           port->qp_eq->attr.ist1);
1290 }
1291
1292 static int ehea_configure_port(struct ehea_port *port)
1293 {
1294         int ret, i;
1295         u64 hret, mask;
1296         struct hcp_ehea_port_cb0 *cb0;
1297
1298         ret = -ENOMEM;
1299         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1300         if (!cb0)
1301                 goto out;
1302
1303         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1304                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1305                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1306                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1307                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1308                                       PXLY_RC_VLAN_FILTER)
1309                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1310
1311         for (i = 0; i < port->num_mcs; i++)
1312                 if (use_mcs)
1313                         cb0->default_qpn_arr[i] =
1314                                 port->port_res[i].qp->init_attr.qp_nr;
1315                 else
1316                         cb0->default_qpn_arr[i] =
1317                                 port->port_res[0].qp->init_attr.qp_nr;
1318
1319         if (netif_msg_ifup(port))
1320                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1321
1322         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1323              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1324
1325         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1326                                        port->logical_port_id,
1327                                        H_PORT_CB0, mask, cb0);
1328         ret = -EIO;
1329         if (hret != H_SUCCESS)
1330                 goto out_free;
1331
1332         ret = 0;
1333
1334 out_free:
1335         kfree(cb0);
1336 out:
1337         return ret;
1338 }
1339
1340 int ehea_gen_smrs(struct ehea_port_res *pr)
1341 {
1342         int ret;
1343         struct ehea_adapter *adapter = pr->port->adapter;
1344
1345         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1346         if (ret)
1347                 goto out;
1348
1349         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1350         if (ret)
1351                 goto out_free;
1352
1353         return 0;
1354
1355 out_free:
1356         ehea_rem_mr(&pr->send_mr);
1357 out:
1358         ehea_error("Generating SMRS failed\n");
1359         return -EIO;
1360 }
1361
1362 int ehea_rem_smrs(struct ehea_port_res *pr)
1363 {
1364         if ((ehea_rem_mr(&pr->send_mr))
1365             || (ehea_rem_mr(&pr->recv_mr)))
1366                 return -EIO;
1367         else
1368                 return 0;
1369 }
1370
1371 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1372 {
1373         int arr_size = sizeof(void *) * max_q_entries;
1374
1375         q_skba->arr = vmalloc(arr_size);
1376         if (!q_skba->arr)
1377                 return -ENOMEM;
1378
1379         memset(q_skba->arr, 0, arr_size);
1380
1381         q_skba->len = max_q_entries;
1382         q_skba->index = 0;
1383         q_skba->os_skbs = 0;
1384
1385         return 0;
1386 }
1387
1388 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1389                               struct port_res_cfg *pr_cfg, int queue_token)
1390 {
1391         struct ehea_adapter *adapter = port->adapter;
1392         enum ehea_eq_type eq_type = EHEA_EQ;
1393         struct ehea_qp_init_attr *init_attr = NULL;
1394         int ret = -EIO;
1395
1396         memset(pr, 0, sizeof(struct ehea_port_res));
1397
1398         pr->port = port;
1399         spin_lock_init(&pr->xmit_lock);
1400         spin_lock_init(&pr->netif_queue);
1401
1402         pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1403         if (!pr->eq) {
1404                 ehea_error("create_eq failed (eq)");
1405                 goto out_free;
1406         }
1407
1408         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1409                                      pr->eq->fw_handle,
1410                                      port->logical_port_id);
1411         if (!pr->recv_cq) {
1412                 ehea_error("create_cq failed (cq_recv)");
1413                 goto out_free;
1414         }
1415
1416         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1417                                      pr->eq->fw_handle,
1418                                      port->logical_port_id);
1419         if (!pr->send_cq) {
1420                 ehea_error("create_cq failed (cq_send)");
1421                 goto out_free;
1422         }
1423
1424         if (netif_msg_ifup(port))
1425                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1426                           pr->send_cq->attr.act_nr_of_cqes,
1427                           pr->recv_cq->attr.act_nr_of_cqes);
1428
1429         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1430         if (!init_attr) {
1431                 ret = -ENOMEM;
1432                 ehea_error("no mem for ehea_qp_init_attr");
1433                 goto out_free;
1434         }
1435
1436         init_attr->low_lat_rq1 = 1;
1437         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1438         init_attr->rq_count = 3;
1439         init_attr->qp_token = queue_token;
1440         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1441         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1442         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1443         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1444         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1445         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1446         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1447         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1448         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1449         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1450         init_attr->port_nr = port->logical_port_id;
1451         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1452         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1453         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1454
1455         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1456         if (!pr->qp) {
1457                 ehea_error("create_qp failed");
1458                 ret = -EIO;
1459                 goto out_free;
1460         }
1461
1462         if (netif_msg_ifup(port))
1463                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1464                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1465                           init_attr->act_nr_send_wqes,
1466                           init_attr->act_nr_rwqes_rq1,
1467                           init_attr->act_nr_rwqes_rq2,
1468                           init_attr->act_nr_rwqes_rq3);
1469
1470         pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1471
1472         ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1473         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1474         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1475         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1476         if (ret)
1477                 goto out_free;
1478
1479         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1480         if (ehea_gen_smrs(pr) != 0) {
1481                 ret = -EIO;
1482                 goto out_free;
1483         }
1484
1485         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1486
1487         kfree(init_attr);
1488
1489         netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1490
1491         pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1492         pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1493         pr->lro_mgr.lro_arr = pr->lro_desc;
1494         pr->lro_mgr.get_skb_header = get_skb_hdr;
1495         pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1496         pr->lro_mgr.dev = port->netdev;
1497         pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1498         pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1499
1500         ret = 0;
1501         goto out;
1502
1503 out_free:
1504         kfree(init_attr);
1505         vfree(pr->sq_skba.arr);
1506         vfree(pr->rq1_skba.arr);
1507         vfree(pr->rq2_skba.arr);
1508         vfree(pr->rq3_skba.arr);
1509         ehea_destroy_qp(pr->qp);
1510         ehea_destroy_cq(pr->send_cq);
1511         ehea_destroy_cq(pr->recv_cq);
1512         ehea_destroy_eq(pr->eq);
1513 out:
1514         return ret;
1515 }
1516
1517 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1518 {
1519         int ret, i;
1520
1521         ret = ehea_destroy_qp(pr->qp);
1522
1523         if (!ret) {
1524                 ehea_destroy_cq(pr->send_cq);
1525                 ehea_destroy_cq(pr->recv_cq);
1526                 ehea_destroy_eq(pr->eq);
1527
1528                 for (i = 0; i < pr->rq1_skba.len; i++)
1529                         if (pr->rq1_skba.arr[i])
1530                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1531
1532                 for (i = 0; i < pr->rq2_skba.len; i++)
1533                         if (pr->rq2_skba.arr[i])
1534                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1535
1536                 for (i = 0; i < pr->rq3_skba.len; i++)
1537                         if (pr->rq3_skba.arr[i])
1538                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1539
1540                 for (i = 0; i < pr->sq_skba.len; i++)
1541                         if (pr->sq_skba.arr[i])
1542                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1543
1544                 vfree(pr->rq1_skba.arr);
1545                 vfree(pr->rq2_skba.arr);
1546                 vfree(pr->rq3_skba.arr);
1547                 vfree(pr->sq_skba.arr);
1548                 ret = ehea_rem_smrs(pr);
1549         }
1550         return ret;
1551 }
1552
1553 /*
1554  * The write_* functions store information in swqe which is used by
1555  * the hardware to calculate the ip/tcp/udp checksum
1556  */
1557
1558 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1559                                       const struct sk_buff *skb)
1560 {
1561         swqe->ip_start = skb_network_offset(skb);
1562         swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1563 }
1564
1565 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1566                                         const struct sk_buff *skb)
1567 {
1568         swqe->tcp_offset =
1569                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1570
1571         swqe->tcp_end = (u16)skb->len - 1;
1572 }
1573
1574 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1575                                         const struct sk_buff *skb)
1576 {
1577         swqe->tcp_offset =
1578                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1579
1580         swqe->tcp_end = (u16)skb->len - 1;
1581 }
1582
1583
1584 static void write_swqe2_TSO(struct sk_buff *skb,
1585                             struct ehea_swqe *swqe, u32 lkey)
1586 {
1587         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1588         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1589         int skb_data_size = skb->len - skb->data_len;
1590         int headersize;
1591
1592         /* Packet is TCP with TSO enabled */
1593         swqe->tx_control |= EHEA_SWQE_TSO;
1594         swqe->mss = skb_shinfo(skb)->gso_size;
1595         /* copy only eth/ip/tcp headers to immediate data and
1596          * the rest of skb->data to sg1entry
1597          */
1598         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1599
1600         skb_data_size = skb->len - skb->data_len;
1601
1602         if (skb_data_size >= headersize) {
1603                 /* copy immediate data */
1604                 skb_copy_from_linear_data(skb, imm_data, headersize);
1605                 swqe->immediate_data_length = headersize;
1606
1607                 if (skb_data_size > headersize) {
1608                         /* set sg1entry data */
1609                         sg1entry->l_key = lkey;
1610                         sg1entry->len = skb_data_size - headersize;
1611                         sg1entry->vaddr =
1612                                 ehea_map_vaddr(skb->data + headersize);
1613                         swqe->descriptors++;
1614                 }
1615         } else
1616                 ehea_error("cannot handle fragmented headers");
1617 }
1618
1619 static void write_swqe2_nonTSO(struct sk_buff *skb,
1620                                struct ehea_swqe *swqe, u32 lkey)
1621 {
1622         int skb_data_size = skb->len - skb->data_len;
1623         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1624         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1625
1626         /* Packet is any nonTSO type
1627          *
1628          * Copy as much as possible skb->data to immediate data and
1629          * the rest to sg1entry
1630          */
1631         if (skb_data_size >= SWQE2_MAX_IMM) {
1632                 /* copy immediate data */
1633                 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1634
1635                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1636
1637                 if (skb_data_size > SWQE2_MAX_IMM) {
1638                         /* copy sg1entry data */
1639                         sg1entry->l_key = lkey;
1640                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1641                         sg1entry->vaddr =
1642                                 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1643                         swqe->descriptors++;
1644                 }
1645         } else {
1646                 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1647                 swqe->immediate_data_length = skb_data_size;
1648         }
1649 }
1650
1651 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1652                                     struct ehea_swqe *swqe, u32 lkey)
1653 {
1654         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1655         skb_frag_t *frag;
1656         int nfrags, sg1entry_contains_frag_data, i;
1657
1658         nfrags = skb_shinfo(skb)->nr_frags;
1659         sg1entry = &swqe->u.immdata_desc.sg_entry;
1660         sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1661         swqe->descriptors = 0;
1662         sg1entry_contains_frag_data = 0;
1663
1664         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1665                 write_swqe2_TSO(skb, swqe, lkey);
1666         else
1667                 write_swqe2_nonTSO(skb, swqe, lkey);
1668
1669         /* write descriptors */
1670         if (nfrags > 0) {
1671                 if (swqe->descriptors == 0) {
1672                         /* sg1entry not yet used */
1673                         frag = &skb_shinfo(skb)->frags[0];
1674
1675                         /* copy sg1entry data */
1676                         sg1entry->l_key = lkey;
1677                         sg1entry->len = frag->size;
1678                         sg1entry->vaddr =
1679                                 ehea_map_vaddr(page_address(frag->page)
1680                                                + frag->page_offset);
1681                         swqe->descriptors++;
1682                         sg1entry_contains_frag_data = 1;
1683                 }
1684
1685                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1686
1687                         frag = &skb_shinfo(skb)->frags[i];
1688                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1689
1690                         sgentry->l_key = lkey;
1691                         sgentry->len = frag->size;
1692                         sgentry->vaddr =
1693                                 ehea_map_vaddr(page_address(frag->page)
1694                                                + frag->page_offset);
1695                         swqe->descriptors++;
1696                 }
1697         }
1698 }
1699
1700 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1701 {
1702         int ret = 0;
1703         u64 hret;
1704         u8 reg_type;
1705
1706         /* De/Register untagged packets */
1707         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1708         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1709                                      port->logical_port_id,
1710                                      reg_type, port->mac_addr, 0, hcallid);
1711         if (hret != H_SUCCESS) {
1712                 ehea_error("%sregistering bc address failed (tagged)",
1713                            hcallid == H_REG_BCMC ? "" : "de");
1714                 ret = -EIO;
1715                 goto out_herr;
1716         }
1717
1718         /* De/Register VLAN packets */
1719         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1720         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1721                                      port->logical_port_id,
1722                                      reg_type, port->mac_addr, 0, hcallid);
1723         if (hret != H_SUCCESS) {
1724                 ehea_error("%sregistering bc address failed (vlan)",
1725                            hcallid == H_REG_BCMC ? "" : "de");
1726                 ret = -EIO;
1727         }
1728 out_herr:
1729         return ret;
1730 }
1731
1732 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1733 {
1734         struct ehea_port *port = netdev_priv(dev);
1735         struct sockaddr *mac_addr = sa;
1736         struct hcp_ehea_port_cb0 *cb0;
1737         int ret;
1738         u64 hret;
1739
1740         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1741                 ret = -EADDRNOTAVAIL;
1742                 goto out;
1743         }
1744
1745         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1746         if (!cb0) {
1747                 ehea_error("no mem for cb0");
1748                 ret = -ENOMEM;
1749                 goto out;
1750         }
1751
1752         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1753
1754         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1755
1756         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1757                                        port->logical_port_id, H_PORT_CB0,
1758                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1759         if (hret != H_SUCCESS) {
1760                 ret = -EIO;
1761                 goto out_free;
1762         }
1763
1764         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1765
1766         mutex_lock(&ehea_bcmc_regs.lock);
1767
1768         /* Deregister old MAC in pHYP */
1769         ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1770         if (ret)
1771                 goto out_upregs;
1772
1773         port->mac_addr = cb0->port_mac_addr << 16;
1774
1775         /* Register new MAC in pHYP */
1776         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1777         if (ret)
1778                 goto out_upregs;
1779
1780         ret = 0;
1781
1782 out_upregs:
1783         ehea_update_bcmc_registrations();
1784         mutex_unlock(&ehea_bcmc_regs.lock);
1785 out_free:
1786         kfree(cb0);
1787 out:
1788         return ret;
1789 }
1790
1791 static void ehea_promiscuous_error(u64 hret, int enable)
1792 {
1793         if (hret == H_AUTHORITY)
1794                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1795                           enable == 1 ? "en" : "dis");
1796         else
1797                 ehea_error("failed %sabling promiscuous mode",
1798                            enable == 1 ? "en" : "dis");
1799 }
1800
1801 static void ehea_promiscuous(struct net_device *dev, int enable)
1802 {
1803         struct ehea_port *port = netdev_priv(dev);
1804         struct hcp_ehea_port_cb7 *cb7;
1805         u64 hret;
1806
1807         if ((enable && port->promisc) || (!enable && !port->promisc))
1808                 return;
1809
1810         cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1811         if (!cb7) {
1812                 ehea_error("no mem for cb7");
1813                 goto out;
1814         }
1815
1816         /* Modify Pxs_DUCQPN in CB7 */
1817         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1818
1819         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1820                                        port->logical_port_id,
1821                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1822         if (hret) {
1823                 ehea_promiscuous_error(hret, enable);
1824                 goto out;
1825         }
1826
1827         port->promisc = enable;
1828 out:
1829         kfree(cb7);
1830         return;
1831 }
1832
1833 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1834                                      u32 hcallid)
1835 {
1836         u64 hret;
1837         u8 reg_type;
1838
1839         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1840                  | EHEA_BCMC_UNTAGGED;
1841
1842         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1843                                      port->logical_port_id,
1844                                      reg_type, mc_mac_addr, 0, hcallid);
1845         if (hret)
1846                 goto out;
1847
1848         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1849                  | EHEA_BCMC_VLANID_ALL;
1850
1851         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1852                                      port->logical_port_id,
1853                                      reg_type, mc_mac_addr, 0, hcallid);
1854 out:
1855         return hret;
1856 }
1857
1858 static int ehea_drop_multicast_list(struct net_device *dev)
1859 {
1860         struct ehea_port *port = netdev_priv(dev);
1861         struct ehea_mc_list *mc_entry = port->mc_list;
1862         struct list_head *pos;
1863         struct list_head *temp;
1864         int ret = 0;
1865         u64 hret;
1866
1867         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1868                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1869
1870                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1871                                                  H_DEREG_BCMC);
1872                 if (hret) {
1873                         ehea_error("failed deregistering mcast MAC");
1874                         ret = -EIO;
1875                 }
1876
1877                 list_del(pos);
1878                 kfree(mc_entry);
1879         }
1880         return ret;
1881 }
1882
1883 static void ehea_allmulti(struct net_device *dev, int enable)
1884 {
1885         struct ehea_port *port = netdev_priv(dev);
1886         u64 hret;
1887
1888         if (!port->allmulti) {
1889                 if (enable) {
1890                         /* Enable ALLMULTI */
1891                         ehea_drop_multicast_list(dev);
1892                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1893                         if (!hret)
1894                                 port->allmulti = 1;
1895                         else
1896                                 ehea_error("failed enabling IFF_ALLMULTI");
1897                 }
1898         } else
1899                 if (!enable) {
1900                         /* Disable ALLMULTI */
1901                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1902                         if (!hret)
1903                                 port->allmulti = 0;
1904                         else
1905                                 ehea_error("failed disabling IFF_ALLMULTI");
1906                 }
1907 }
1908
1909 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1910 {
1911         struct ehea_mc_list *ehea_mcl_entry;
1912         u64 hret;
1913
1914         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1915         if (!ehea_mcl_entry) {
1916                 ehea_error("no mem for mcl_entry");
1917                 return;
1918         }
1919
1920         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1921
1922         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1923
1924         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1925                                          H_REG_BCMC);
1926         if (!hret)
1927                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1928         else {
1929                 ehea_error("failed registering mcast MAC");
1930                 kfree(ehea_mcl_entry);
1931         }
1932 }
1933
1934 static void ehea_set_multicast_list(struct net_device *dev)
1935 {
1936         struct ehea_port *port = netdev_priv(dev);
1937         struct dev_mc_list *k_mcl_entry;
1938         int ret, i;
1939
1940         if (dev->flags & IFF_PROMISC) {
1941                 ehea_promiscuous(dev, 1);
1942                 return;
1943         }
1944         ehea_promiscuous(dev, 0);
1945
1946         mutex_lock(&ehea_bcmc_regs.lock);
1947
1948         if (dev->flags & IFF_ALLMULTI) {
1949                 ehea_allmulti(dev, 1);
1950                 goto out;
1951         }
1952         ehea_allmulti(dev, 0);
1953
1954         if (dev->mc_count) {
1955                 ret = ehea_drop_multicast_list(dev);
1956                 if (ret) {
1957                         /* Dropping the current multicast list failed.
1958                          * Enabling ALL_MULTI is the best we can do.
1959                          */
1960                         ehea_allmulti(dev, 1);
1961                 }
1962
1963                 if (dev->mc_count > port->adapter->max_mc_mac) {
1964                         ehea_info("Mcast registration limit reached (0x%lx). "
1965                                   "Use ALLMULTI!",
1966                                   port->adapter->max_mc_mac);
1967                         goto out;
1968                 }
1969
1970                 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1971                              k_mcl_entry = k_mcl_entry->next)
1972                         ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1973
1974         }
1975 out:
1976         ehea_update_bcmc_registrations();
1977         mutex_unlock(&ehea_bcmc_regs.lock);
1978         return;
1979 }
1980
1981 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1982 {
1983         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1984                 return -EINVAL;
1985         dev->mtu = new_mtu;
1986         return 0;
1987 }
1988
1989 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1990                        struct ehea_swqe *swqe, u32 lkey)
1991 {
1992         if (skb->protocol == htons(ETH_P_IP)) {
1993                 const struct iphdr *iph = ip_hdr(skb);
1994
1995                 /* IPv4 */
1996                 swqe->tx_control |= EHEA_SWQE_CRC
1997                                  | EHEA_SWQE_IP_CHECKSUM
1998                                  | EHEA_SWQE_TCP_CHECKSUM
1999                                  | EHEA_SWQE_IMM_DATA_PRESENT
2000                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2001
2002                 write_ip_start_end(swqe, skb);
2003
2004                 if (iph->protocol == IPPROTO_UDP) {
2005                         if ((iph->frag_off & IP_MF)
2006                             || (iph->frag_off & IP_OFFSET))
2007                                 /* IP fragment, so don't change cs */
2008                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2009                         else
2010                                 write_udp_offset_end(swqe, skb);
2011                 } else if (iph->protocol == IPPROTO_TCP) {
2012                         write_tcp_offset_end(swqe, skb);
2013                 }
2014
2015                 /* icmp (big data) and ip segmentation packets (all other ip
2016                    packets) do not require any special handling */
2017
2018         } else {
2019                 /* Other Ethernet Protocol */
2020                 swqe->tx_control |= EHEA_SWQE_CRC
2021                                  | EHEA_SWQE_IMM_DATA_PRESENT
2022                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2023         }
2024
2025         write_swqe2_data(skb, dev, swqe, lkey);
2026 }
2027
2028 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2029                        struct ehea_swqe *swqe)
2030 {
2031         int nfrags = skb_shinfo(skb)->nr_frags;
2032         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2033         skb_frag_t *frag;
2034         int i;
2035
2036         if (skb->protocol == htons(ETH_P_IP)) {
2037                 const struct iphdr *iph = ip_hdr(skb);
2038
2039                 /* IPv4 */
2040                 write_ip_start_end(swqe, skb);
2041
2042                 if (iph->protocol == IPPROTO_TCP) {
2043                         swqe->tx_control |= EHEA_SWQE_CRC
2044                                          | EHEA_SWQE_IP_CHECKSUM
2045                                          | EHEA_SWQE_TCP_CHECKSUM
2046                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2047
2048                         write_tcp_offset_end(swqe, skb);
2049
2050                 } else if (iph->protocol == IPPROTO_UDP) {
2051                         if ((iph->frag_off & IP_MF)
2052                             || (iph->frag_off & IP_OFFSET))
2053                                 /* IP fragment, so don't change cs */
2054                                 swqe->tx_control |= EHEA_SWQE_CRC
2055                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2056                         else {
2057                                 swqe->tx_control |= EHEA_SWQE_CRC
2058                                                  | EHEA_SWQE_IP_CHECKSUM
2059                                                  | EHEA_SWQE_TCP_CHECKSUM
2060                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2061
2062                                 write_udp_offset_end(swqe, skb);
2063                         }
2064                 } else {
2065                         /* icmp (big data) and
2066                            ip segmentation packets (all other ip packets) */
2067                         swqe->tx_control |= EHEA_SWQE_CRC
2068                                          | EHEA_SWQE_IP_CHECKSUM
2069                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2070                 }
2071         } else {
2072                 /* Other Ethernet Protocol */
2073                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2074         }
2075         /* copy (immediate) data */
2076         if (nfrags == 0) {
2077                 /* data is in a single piece */
2078                 skb_copy_from_linear_data(skb, imm_data, skb->len);
2079         } else {
2080                 /* first copy data from the skb->data buffer ... */
2081                 skb_copy_from_linear_data(skb, imm_data,
2082                                           skb->len - skb->data_len);
2083                 imm_data += skb->len - skb->data_len;
2084
2085                 /* ... then copy data from the fragments */
2086                 for (i = 0; i < nfrags; i++) {
2087                         frag = &skb_shinfo(skb)->frags[i];
2088                         memcpy(imm_data,
2089                                page_address(frag->page) + frag->page_offset,
2090                                frag->size);
2091                         imm_data += frag->size;
2092                 }
2093         }
2094         swqe->immediate_data_length = skb->len;
2095         dev_kfree_skb(skb);
2096 }
2097
2098 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2099 {
2100         struct tcphdr *tcp;
2101         u32 tmp;
2102
2103         if ((skb->protocol == htons(ETH_P_IP)) &&
2104             (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2105                 tcp = (struct tcphdr *)(skb_network_header(skb) +
2106                                         (ip_hdr(skb)->ihl * 4));
2107                 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2108                 tmp += ip_hdr(skb)->daddr % 31;
2109                 return tmp % num_qps;
2110         } else
2111                 return 0;
2112 }
2113
2114 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2115 {
2116         struct ehea_port *port = netdev_priv(dev);
2117         struct ehea_swqe *swqe;
2118         unsigned long flags;
2119         u32 lkey;
2120         int swqe_index;
2121         struct ehea_port_res *pr;
2122
2123         pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2124
2125         if (!spin_trylock(&pr->xmit_lock))
2126                 return NETDEV_TX_BUSY;
2127
2128         if (pr->queue_stopped) {
2129                 spin_unlock(&pr->xmit_lock);
2130                 return NETDEV_TX_BUSY;
2131         }
2132
2133         swqe = ehea_get_swqe(pr->qp, &swqe_index);
2134         memset(swqe, 0, SWQE_HEADER_SIZE);
2135         atomic_dec(&pr->swqe_avail);
2136
2137         if (skb->len <= SWQE3_MAX_IMM) {
2138                 u32 sig_iv = port->sig_comp_iv;
2139                 u32 swqe_num = pr->swqe_id_counter;
2140                 ehea_xmit3(skb, dev, swqe);
2141                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2142                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2143                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2144                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2145                                                       sig_iv);
2146                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2147                         pr->swqe_ll_count = 0;
2148                 } else
2149                         pr->swqe_ll_count += 1;
2150         } else {
2151                 swqe->wr_id =
2152                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2153                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2154                       | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2155                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2156                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2157
2158                 pr->sq_skba.index++;
2159                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2160
2161                 lkey = pr->send_mr.lkey;
2162                 ehea_xmit2(skb, dev, swqe, lkey);
2163                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2164         }
2165         pr->swqe_id_counter += 1;
2166
2167         if (port->vgrp && vlan_tx_tag_present(skb)) {
2168                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2169                 swqe->vlan_tag = vlan_tx_tag_get(skb);
2170         }
2171
2172         if (netif_msg_tx_queued(port)) {
2173                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2174                 ehea_dump(swqe, 512, "swqe");
2175         }
2176
2177         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2178                 netif_stop_queue(dev);
2179                 swqe->tx_control |= EHEA_SWQE_PURGE;
2180         }
2181
2182         ehea_post_swqe(pr->qp, swqe);
2183         pr->tx_packets++;
2184
2185         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2186                 spin_lock_irqsave(&pr->netif_queue, flags);
2187                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2188                         pr->p_stats.queue_stopped++;
2189                         netif_stop_queue(dev);
2190                         pr->queue_stopped = 1;
2191                 }
2192                 spin_unlock_irqrestore(&pr->netif_queue, flags);
2193         }
2194         dev->trans_start = jiffies;
2195         spin_unlock(&pr->xmit_lock);
2196
2197         return NETDEV_TX_OK;
2198 }
2199
2200 static void ehea_vlan_rx_register(struct net_device *dev,
2201                                   struct vlan_group *grp)
2202 {
2203         struct ehea_port *port = netdev_priv(dev);
2204         struct ehea_adapter *adapter = port->adapter;
2205         struct hcp_ehea_port_cb1 *cb1;
2206         u64 hret;
2207
2208         port->vgrp = grp;
2209
2210         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2211         if (!cb1) {
2212                 ehea_error("no mem for cb1");
2213                 goto out;
2214         }
2215
2216         memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
2217
2218         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2219                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2220         if (hret != H_SUCCESS)
2221                 ehea_error("modify_ehea_port failed");
2222
2223         kfree(cb1);
2224 out:
2225         return;
2226 }
2227
2228 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2229 {
2230         struct ehea_port *port = netdev_priv(dev);
2231         struct ehea_adapter *adapter = port->adapter;
2232         struct hcp_ehea_port_cb1 *cb1;
2233         int index;
2234         u64 hret;
2235
2236         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2237         if (!cb1) {
2238                 ehea_error("no mem for cb1");
2239                 goto out;
2240         }
2241
2242         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2243                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2244         if (hret != H_SUCCESS) {
2245                 ehea_error("query_ehea_port failed");
2246                 goto out;
2247         }
2248
2249         index = (vid / 64);
2250         cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2251
2252         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2253                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2254         if (hret != H_SUCCESS)
2255                 ehea_error("modify_ehea_port failed");
2256 out:
2257         kfree(cb1);
2258         return;
2259 }
2260
2261 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2262 {
2263         struct ehea_port *port = netdev_priv(dev);
2264         struct ehea_adapter *adapter = port->adapter;
2265         struct hcp_ehea_port_cb1 *cb1;
2266         int index;
2267         u64 hret;
2268
2269         vlan_group_set_device(port->vgrp, vid, NULL);
2270
2271         cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2272         if (!cb1) {
2273                 ehea_error("no mem for cb1");
2274                 goto out;
2275         }
2276
2277         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2278                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2279         if (hret != H_SUCCESS) {
2280                 ehea_error("query_ehea_port failed");
2281                 goto out;
2282         }
2283
2284         index = (vid / 64);
2285         cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2286
2287         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2288                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2289         if (hret != H_SUCCESS)
2290                 ehea_error("modify_ehea_port failed");
2291 out:
2292         kfree(cb1);
2293         return;
2294 }
2295
2296 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2297 {
2298         int ret = -EIO;
2299         u64 hret;
2300         u16 dummy16 = 0;
2301         u64 dummy64 = 0;
2302         struct hcp_modify_qp_cb0 *cb0;
2303
2304         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2305         if (!cb0) {
2306                 ret = -ENOMEM;
2307                 goto out;
2308         }
2309
2310         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2311                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2312         if (hret != H_SUCCESS) {
2313                 ehea_error("query_ehea_qp failed (1)");
2314                 goto out;
2315         }
2316
2317         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2318         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2319                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2320                                      &dummy64, &dummy64, &dummy16, &dummy16);
2321         if (hret != H_SUCCESS) {
2322                 ehea_error("modify_ehea_qp failed (1)");
2323                 goto out;
2324         }
2325
2326         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2327                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2328         if (hret != H_SUCCESS) {
2329                 ehea_error("query_ehea_qp failed (2)");
2330                 goto out;
2331         }
2332
2333         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2334         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2335                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2336                                      &dummy64, &dummy64, &dummy16, &dummy16);
2337         if (hret != H_SUCCESS) {
2338                 ehea_error("modify_ehea_qp failed (2)");
2339                 goto out;
2340         }
2341
2342         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2343                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2344         if (hret != H_SUCCESS) {
2345                 ehea_error("query_ehea_qp failed (3)");
2346                 goto out;
2347         }
2348
2349         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2350         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2351                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2352                                      &dummy64, &dummy64, &dummy16, &dummy16);
2353         if (hret != H_SUCCESS) {
2354                 ehea_error("modify_ehea_qp failed (3)");
2355                 goto out;
2356         }
2357
2358         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2359                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2360         if (hret != H_SUCCESS) {
2361                 ehea_error("query_ehea_qp failed (4)");
2362                 goto out;
2363         }
2364
2365         ret = 0;
2366 out:
2367         kfree(cb0);
2368         return ret;
2369 }
2370
2371 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2372                                int add_tx_qps)
2373 {
2374         int ret, i;
2375         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2376         enum ehea_eq_type eq_type = EHEA_EQ;
2377
2378         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2379                                    EHEA_MAX_ENTRIES_EQ, 1);
2380         if (!port->qp_eq) {
2381                 ret = -EINVAL;
2382                 ehea_error("ehea_create_eq failed (qp_eq)");
2383                 goto out_kill_eq;
2384         }
2385
2386         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2387         pr_cfg.max_entries_scq = sq_entries * 2;
2388         pr_cfg.max_entries_sq = sq_entries;
2389         pr_cfg.max_entries_rq1 = rq1_entries;
2390         pr_cfg.max_entries_rq2 = rq2_entries;
2391         pr_cfg.max_entries_rq3 = rq3_entries;
2392
2393         pr_cfg_small_rx.max_entries_rcq = 1;
2394         pr_cfg_small_rx.max_entries_scq = sq_entries;
2395         pr_cfg_small_rx.max_entries_sq = sq_entries;
2396         pr_cfg_small_rx.max_entries_rq1 = 1;
2397         pr_cfg_small_rx.max_entries_rq2 = 1;
2398         pr_cfg_small_rx.max_entries_rq3 = 1;
2399
2400         for (i = 0; i < def_qps; i++) {
2401                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2402                 if (ret)
2403                         goto out_clean_pr;
2404         }
2405         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2406                 ret = ehea_init_port_res(port, &port->port_res[i],
2407                                          &pr_cfg_small_rx, i);
2408                 if (ret)
2409                         goto out_clean_pr;
2410         }
2411
2412         return 0;
2413
2414 out_clean_pr:
2415         while (--i >= 0)
2416                 ehea_clean_portres(port, &port->port_res[i]);
2417
2418 out_kill_eq:
2419         ehea_destroy_eq(port->qp_eq);
2420         return ret;
2421 }
2422
2423 static int ehea_clean_all_portres(struct ehea_port *port)
2424 {
2425         int ret = 0;
2426         int i;
2427
2428         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2429                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2430
2431         ret |= ehea_destroy_eq(port->qp_eq);
2432
2433         return ret;
2434 }
2435
2436 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2437 {
2438         if (adapter->active_ports)
2439                 return;
2440
2441         ehea_rem_mr(&adapter->mr);
2442 }
2443
2444 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2445 {
2446         if (adapter->active_ports)
2447                 return 0;
2448
2449         return ehea_reg_kernel_mr(adapter, &adapter->mr);
2450 }
2451
2452 static int ehea_up(struct net_device *dev)
2453 {
2454         int ret, i;
2455         struct ehea_port *port = netdev_priv(dev);
2456
2457         if (port->state == EHEA_PORT_UP)
2458                 return 0;
2459
2460         mutex_lock(&ehea_fw_handles.lock);
2461
2462         ret = ehea_port_res_setup(port, port->num_def_qps,
2463                                   port->num_add_tx_qps);
2464         if (ret) {
2465                 ehea_error("port_res_failed");
2466                 goto out;
2467         }
2468
2469         /* Set default QP for this port */
2470         ret = ehea_configure_port(port);
2471         if (ret) {
2472                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2473                 goto out_clean_pr;
2474         }
2475
2476         ret = ehea_reg_interrupts(dev);
2477         if (ret) {
2478                 ehea_error("reg_interrupts failed. ret:%d", ret);
2479                 goto out_clean_pr;
2480         }
2481
2482         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2483                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2484                 if (ret) {
2485                         ehea_error("activate_qp failed");
2486                         goto out_free_irqs;
2487                 }
2488         }
2489
2490         for (i = 0; i < port->num_def_qps; i++) {
2491                 ret = ehea_fill_port_res(&port->port_res[i]);
2492                 if (ret) {
2493                         ehea_error("out_free_irqs");
2494                         goto out_free_irqs;
2495                 }
2496         }
2497
2498         mutex_lock(&ehea_bcmc_regs.lock);
2499
2500         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2501         if (ret) {
2502                 ret = -EIO;
2503                 goto out_free_irqs;
2504         }
2505
2506         port->state = EHEA_PORT_UP;
2507
2508         ret = 0;
2509         goto out;
2510
2511 out_free_irqs:
2512         ehea_free_interrupts(dev);
2513
2514 out_clean_pr:
2515         ehea_clean_all_portres(port);
2516 out:
2517         if (ret)
2518                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2519
2520         ehea_update_bcmc_registrations();
2521         mutex_unlock(&ehea_bcmc_regs.lock);
2522
2523         ehea_update_firmware_handles();
2524         mutex_unlock(&ehea_fw_handles.lock);
2525
2526         return ret;
2527 }
2528
2529 static void port_napi_disable(struct ehea_port *port)
2530 {
2531         int i;
2532
2533         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2534                 napi_disable(&port->port_res[i].napi);
2535 }
2536
2537 static void port_napi_enable(struct ehea_port *port)
2538 {
2539         int i;
2540
2541         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2542                 napi_enable(&port->port_res[i].napi);
2543 }
2544
2545 static int ehea_open(struct net_device *dev)
2546 {
2547         int ret;
2548         struct ehea_port *port = netdev_priv(dev);
2549
2550         mutex_lock(&port->port_lock);
2551
2552         if (netif_msg_ifup(port))
2553                 ehea_info("enabling port %s", dev->name);
2554
2555         ret = ehea_up(dev);
2556         if (!ret) {
2557                 port_napi_enable(port);
2558                 netif_start_queue(dev);
2559         }
2560
2561         mutex_unlock(&port->port_lock);
2562
2563         return ret;
2564 }
2565
2566 static int ehea_down(struct net_device *dev)
2567 {
2568         int ret;
2569         struct ehea_port *port = netdev_priv(dev);
2570
2571         if (port->state == EHEA_PORT_DOWN)
2572                 return 0;
2573
2574         mutex_lock(&ehea_fw_handles.lock);
2575
2576         mutex_lock(&ehea_bcmc_regs.lock);
2577         ehea_drop_multicast_list(dev);
2578         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2579
2580         ehea_free_interrupts(dev);
2581
2582         port->state = EHEA_PORT_DOWN;
2583
2584         ehea_update_bcmc_registrations();
2585         mutex_unlock(&ehea_bcmc_regs.lock);
2586
2587         ret = ehea_clean_all_portres(port);
2588         if (ret)
2589                 ehea_info("Failed freeing resources for %s. ret=%i",
2590                           dev->name, ret);
2591
2592         ehea_update_firmware_handles();
2593         mutex_unlock(&ehea_fw_handles.lock);
2594
2595         return ret;
2596 }
2597
2598 static int ehea_stop(struct net_device *dev)
2599 {
2600         int ret;
2601         struct ehea_port *port = netdev_priv(dev);
2602
2603         if (netif_msg_ifdown(port))
2604                 ehea_info("disabling port %s", dev->name);
2605
2606         flush_scheduled_work();
2607         mutex_lock(&port->port_lock);
2608         netif_stop_queue(dev);
2609         port_napi_disable(port);
2610         ret = ehea_down(dev);
2611         mutex_unlock(&port->port_lock);
2612         return ret;
2613 }
2614
2615 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2616 {
2617         struct ehea_qp qp = *orig_qp;
2618         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2619         struct ehea_swqe *swqe;
2620         int wqe_index;
2621         int i;
2622
2623         for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2624                 swqe = ehea_get_swqe(&qp, &wqe_index);
2625                 swqe->tx_control |= EHEA_SWQE_PURGE;
2626         }
2627 }
2628
2629 static void ehea_flush_sq(struct ehea_port *port)
2630 {
2631         int i;
2632
2633         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2634                 struct ehea_port_res *pr = &port->port_res[i];
2635                 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2636                 int k = 0;
2637                 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2638                         msleep(5);
2639                         if (++k == 20)
2640                                 break;
2641                 }
2642         }
2643 }
2644
2645 int ehea_stop_qps(struct net_device *dev)
2646 {
2647         struct ehea_port *port = netdev_priv(dev);
2648         struct ehea_adapter *adapter = port->adapter;
2649         struct hcp_modify_qp_cb0 *cb0;
2650         int ret = -EIO;
2651         int dret;
2652         int i;
2653         u64 hret;
2654         u64 dummy64 = 0;
2655         u16 dummy16 = 0;
2656
2657         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2658         if (!cb0) {
2659                 ret = -ENOMEM;
2660                 goto out;
2661         }
2662
2663         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2664                 struct ehea_port_res *pr =  &port->port_res[i];
2665                 struct ehea_qp *qp = pr->qp;
2666
2667                 /* Purge send queue */
2668                 ehea_purge_sq(qp);
2669
2670                 /* Disable queue pair */
2671                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2672                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2673                                             cb0);
2674                 if (hret != H_SUCCESS) {
2675                         ehea_error("query_ehea_qp failed (1)");
2676                         goto out;
2677                 }
2678
2679                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2680                 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2681
2682                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2683                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2684                                                             1), cb0, &dummy64,
2685                                              &dummy64, &dummy16, &dummy16);
2686                 if (hret != H_SUCCESS) {
2687                         ehea_error("modify_ehea_qp failed (1)");
2688                         goto out;
2689                 }
2690
2691                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2692                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2693                                             cb0);
2694                 if (hret != H_SUCCESS) {
2695                         ehea_error("query_ehea_qp failed (2)");
2696                         goto out;
2697                 }
2698
2699                 /* deregister shared memory regions */
2700                 dret = ehea_rem_smrs(pr);
2701                 if (dret) {
2702                         ehea_error("unreg shared memory region failed");
2703                         goto out;
2704                 }
2705         }
2706
2707         ret = 0;
2708 out:
2709         kfree(cb0);
2710
2711         return ret;
2712 }
2713
2714 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2715 {
2716         struct ehea_qp qp = *orig_qp;
2717         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2718         struct ehea_rwqe *rwqe;
2719         struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2720         struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2721         struct sk_buff *skb;
2722         u32 lkey = pr->recv_mr.lkey;
2723
2724
2725         int i;
2726         int index;
2727
2728         for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2729                 rwqe = ehea_get_next_rwqe(&qp, 2);
2730                 rwqe->sg_list[0].l_key = lkey;
2731                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2732                 skb = skba_rq2[index];
2733                 if (skb)
2734                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2735         }
2736
2737         for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2738                 rwqe = ehea_get_next_rwqe(&qp, 3);
2739                 rwqe->sg_list[0].l_key = lkey;
2740                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2741                 skb = skba_rq3[index];
2742                 if (skb)
2743                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2744         }
2745 }
2746
2747 int ehea_restart_qps(struct net_device *dev)
2748 {
2749         struct ehea_port *port = netdev_priv(dev);
2750         struct ehea_adapter *adapter = port->adapter;
2751         int ret = 0;
2752         int i;
2753
2754         struct hcp_modify_qp_cb0 *cb0;
2755         u64 hret;
2756         u64 dummy64 = 0;
2757         u16 dummy16 = 0;
2758
2759         cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2760         if (!cb0) {
2761                 ret = -ENOMEM;
2762                 goto out;
2763         }
2764
2765         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2766                 struct ehea_port_res *pr =  &port->port_res[i];
2767                 struct ehea_qp *qp = pr->qp;
2768
2769                 ret = ehea_gen_smrs(pr);
2770                 if (ret) {
2771                         ehea_error("creation of shared memory regions failed");
2772                         goto out;
2773                 }
2774
2775                 ehea_update_rqs(qp, pr);
2776
2777                 /* Enable queue pair */
2778                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2779                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2780                                             cb0);
2781                 if (hret != H_SUCCESS) {
2782                         ehea_error("query_ehea_qp failed (1)");
2783                         goto out;
2784                 }
2785
2786                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2787                 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2788
2789                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2790                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2791                                                             1), cb0, &dummy64,
2792                                              &dummy64, &dummy16, &dummy16);
2793                 if (hret != H_SUCCESS) {
2794                         ehea_error("modify_ehea_qp failed (1)");
2795                         goto out;
2796                 }
2797
2798                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2799                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2800                                             cb0);
2801                 if (hret != H_SUCCESS) {
2802                         ehea_error("query_ehea_qp failed (2)");
2803                         goto out;
2804                 }
2805
2806                 /* refill entire queue */
2807                 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2808                 ehea_refill_rq2(pr, 0);
2809                 ehea_refill_rq3(pr, 0);
2810         }
2811 out:
2812         kfree(cb0);
2813
2814         return ret;
2815 }
2816
2817 static void ehea_reset_port(struct work_struct *work)
2818 {
2819         int ret;
2820         struct ehea_port *port =
2821                 container_of(work, struct ehea_port, reset_task);
2822         struct net_device *dev = port->netdev;
2823
2824         port->resets++;
2825         mutex_lock(&port->port_lock);
2826         netif_stop_queue(dev);
2827
2828         port_napi_disable(port);
2829
2830         ehea_down(dev);
2831
2832         ret = ehea_up(dev);
2833         if (ret)
2834                 goto out;
2835
2836         ehea_set_multicast_list(dev);
2837
2838         if (netif_msg_timer(port))
2839                 ehea_info("Device %s resetted successfully", dev->name);
2840
2841         port_napi_enable(port);
2842
2843         netif_wake_queue(dev);
2844 out:
2845         mutex_unlock(&port->port_lock);
2846         return;
2847 }
2848
2849 static void ehea_rereg_mrs(struct work_struct *work)
2850 {
2851         int ret, i;
2852         struct ehea_adapter *adapter;
2853
2854         mutex_lock(&dlpar_mem_lock);
2855         ehea_info("LPAR memory enlarged - re-initializing driver");
2856
2857         list_for_each_entry(adapter, &adapter_list, list)
2858                 if (adapter->active_ports) {
2859                         /* Shutdown all ports */
2860                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2861                                 struct ehea_port *port = adapter->port[i];
2862                                 struct net_device *dev;
2863
2864                                 if (!port)
2865                                         continue;
2866
2867                                 dev = port->netdev;
2868
2869                                 if (dev->flags & IFF_UP) {
2870                                         mutex_lock(&port->port_lock);
2871                                         netif_stop_queue(dev);
2872                                         ehea_flush_sq(port);
2873                                         ret = ehea_stop_qps(dev);
2874                                         if (ret) {
2875                                                 mutex_unlock(&port->port_lock);
2876                                                 goto out;
2877                                         }
2878                                         port_napi_disable(port);
2879                                         mutex_unlock(&port->port_lock);
2880                                 }
2881                         }
2882
2883                         /* Unregister old memory region */
2884                         ret = ehea_rem_mr(&adapter->mr);
2885                         if (ret) {
2886                                 ehea_error("unregister MR failed - driver"
2887                                            " inoperable!");
2888                                 goto out;
2889                         }
2890                 }
2891
2892         ehea_destroy_busmap();
2893         ret = ehea_create_busmap();
2894         if (ret) {
2895                 ehea_error("creating ehea busmap failed");
2896                 goto out;
2897         }
2898
2899         clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2900
2901         list_for_each_entry(adapter, &adapter_list, list)
2902                 if (adapter->active_ports) {
2903                         /* Register new memory region */
2904                         ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2905                         if (ret) {
2906                                 ehea_error("register MR failed - driver"
2907                                            " inoperable!");
2908                                 goto out;
2909                         }
2910
2911                         /* Restart all ports */
2912                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2913                                 struct ehea_port *port = adapter->port[i];
2914
2915                                 if (port) {
2916                                         struct net_device *dev = port->netdev;
2917
2918                                         if (dev->flags & IFF_UP) {
2919                                                 mutex_lock(&port->port_lock);
2920                                                 port_napi_enable(port);
2921                                                 ret = ehea_restart_qps(dev);
2922                                                 if (!ret)
2923                                                         netif_wake_queue(dev);
2924                                                 mutex_unlock(&port->port_lock);
2925                                         }
2926                                 }
2927                         }
2928                 }
2929        mutex_unlock(&dlpar_mem_lock);
2930        ehea_info("re-initializing driver complete");
2931 out:
2932         return;
2933 }
2934
2935 static void ehea_tx_watchdog(struct net_device *dev)
2936 {
2937         struct ehea_port *port = netdev_priv(dev);
2938
2939         if (netif_carrier_ok(dev) &&
2940             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2941                 schedule_work(&port->reset_task);
2942 }
2943
2944 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2945 {
2946         struct hcp_query_ehea *cb;
2947         u64 hret;
2948         int ret;
2949
2950         cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2951         if (!cb) {
2952                 ret = -ENOMEM;
2953                 goto out;
2954         }
2955
2956         hret = ehea_h_query_ehea(adapter->handle, cb);
2957
2958         if (hret != H_SUCCESS) {
2959                 ret = -EIO;
2960                 goto out_herr;
2961         }
2962
2963         adapter->max_mc_mac = cb->max_mc_mac - 1;
2964         ret = 0;
2965
2966 out_herr:
2967         kfree(cb);
2968 out:
2969         return ret;
2970 }
2971
2972 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2973 {
2974         struct hcp_ehea_port_cb4 *cb4;
2975         u64 hret;
2976         int ret = 0;
2977
2978         *jumbo = 0;
2979
2980         /* (Try to) enable *jumbo frames */
2981         cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2982         if (!cb4) {
2983                 ehea_error("no mem for cb4");
2984                 ret = -ENOMEM;
2985                 goto out;
2986         } else {
2987                 hret = ehea_h_query_ehea_port(port->adapter->handle,
2988                                               port->logical_port_id,
2989                                               H_PORT_CB4,
2990                                               H_PORT_CB4_JUMBO, cb4);
2991                 if (hret == H_SUCCESS) {
2992                         if (cb4->jumbo_frame)
2993                                 *jumbo = 1;
2994                         else {
2995                                 cb4->jumbo_frame = 1;
2996                                 hret = ehea_h_modify_ehea_port(port->adapter->
2997                                                                handle,
2998                                                                port->
2999                                                                logical_port_id,
3000                                                                H_PORT_CB4,
3001                                                                H_PORT_CB4_JUMBO,
3002                                                                cb4);
3003                                 if (hret == H_SUCCESS)
3004                                         *jumbo = 1;
3005                         }
3006                 } else
3007                         ret = -EINVAL;
3008
3009                 kfree(cb4);
3010         }
3011 out:
3012         return ret;
3013 }
3014
3015 static ssize_t ehea_show_port_id(struct device *dev,
3016                                  struct device_attribute *attr, char *buf)
3017 {
3018         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3019         return sprintf(buf, "%d", port->logical_port_id);
3020 }
3021
3022 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3023                    NULL);
3024
3025 static void __devinit logical_port_release(struct device *dev)
3026 {
3027         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3028         of_node_put(port->ofdev.node);
3029 }
3030
3031 static struct device *ehea_register_port(struct ehea_port *port,
3032                                          struct device_node *dn)
3033 {
3034         int ret;
3035
3036         port->ofdev.node = of_node_get(dn);
3037         port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3038         port->ofdev.dev.bus = &ibmebus_bus_type;
3039
3040         sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
3041         port->ofdev.dev.release = logical_port_release;
3042
3043         ret = of_device_register(&port->ofdev);
3044         if (ret) {
3045                 ehea_error("failed to register device. ret=%d", ret);
3046                 goto out;
3047         }
3048
3049         ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3050         if (ret) {
3051                 ehea_error("failed to register attributes, ret=%d", ret);
3052                 goto out_unreg_of_dev;
3053         }
3054
3055         return &port->ofdev.dev;
3056
3057 out_unreg_of_dev:
3058         of_device_unregister(&port->ofdev);
3059 out:
3060         return NULL;
3061 }
3062
3063 static void ehea_unregister_port(struct ehea_port *port)
3064 {
3065         device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3066         of_device_unregister(&port->ofdev);
3067 }
3068
3069 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3070                                          u32 logical_port_id,
3071                                          struct device_node *dn)
3072 {
3073         int ret;
3074         struct net_device *dev;
3075         struct ehea_port *port;
3076         struct device *port_dev;
3077         int jumbo;
3078
3079         /* allocate memory for the port structures */
3080         dev = alloc_etherdev(sizeof(struct ehea_port));
3081
3082         if (!dev) {
3083                 ehea_error("no mem for net_device");
3084                 ret = -ENOMEM;
3085                 goto out_err;
3086         }
3087
3088         port = netdev_priv(dev);
3089
3090         mutex_init(&port->port_lock);
3091         port->state = EHEA_PORT_DOWN;
3092         port->sig_comp_iv = sq_entries / 10;
3093
3094         port->adapter = adapter;
3095         port->netdev = dev;
3096         port->logical_port_id = logical_port_id;
3097
3098         port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3099
3100         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3101         if (!port->mc_list) {
3102                 ret = -ENOMEM;
3103                 goto out_free_ethdev;
3104         }
3105
3106         INIT_LIST_HEAD(&port->mc_list->list);
3107
3108         ret = ehea_sense_port_attr(port);
3109         if (ret)
3110                 goto out_free_mc_list;
3111
3112         port_dev = ehea_register_port(port, dn);
3113         if (!port_dev)
3114                 goto out_free_mc_list;
3115
3116         SET_NETDEV_DEV(dev, port_dev);
3117
3118         /* initialize net_device structure */
3119         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3120
3121         dev->open = ehea_open;
3122 #ifdef CONFIG_NET_POLL_CONTROLLER
3123         dev->poll_controller = ehea_netpoll;
3124 #endif
3125         dev->stop = ehea_stop;
3126         dev->hard_start_xmit = ehea_start_xmit;
3127         dev->get_stats = ehea_get_stats;
3128         dev->set_multicast_list = ehea_set_multicast_list;
3129         dev->set_mac_address = ehea_set_mac_addr;
3130         dev->change_mtu = ehea_change_mtu;
3131         dev->vlan_rx_register = ehea_vlan_rx_register;
3132         dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
3133         dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
3134         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3135                       | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3136                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3137                       | NETIF_F_LLTX;
3138         dev->tx_timeout = &ehea_tx_watchdog;
3139         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3140
3141         INIT_WORK(&port->reset_task, ehea_reset_port);
3142         ehea_set_ethtool_ops(dev);
3143
3144         ret = register_netdev(dev);
3145         if (ret) {
3146                 ehea_error("register_netdev failed. ret=%d", ret);
3147                 goto out_unreg_port;
3148         }
3149
3150         port->lro_max_aggr = lro_max_aggr;
3151
3152         ret = ehea_get_jumboframe_status(port, &jumbo);
3153         if (ret)
3154                 ehea_error("failed determining jumbo frame status for %s",
3155                            port->netdev->name);
3156
3157         ehea_info("%s: Jumbo frames are %sabled", dev->name,
3158                   jumbo == 1 ? "en" : "dis");
3159
3160         adapter->active_ports++;
3161
3162         return port;
3163
3164 out_unreg_port:
3165         ehea_unregister_port(port);
3166
3167 out_free_mc_list:
3168         kfree(port->mc_list);
3169
3170 out_free_ethdev:
3171         free_netdev(dev);
3172
3173 out_err:
3174         ehea_error("setting up logical port with id=%d failed, ret=%d",
3175                    logical_port_id, ret);
3176         return NULL;
3177 }
3178
3179 static void ehea_shutdown_single_port(struct ehea_port *port)
3180 {
3181         unregister_netdev(port->netdev);
3182         ehea_unregister_port(port);
3183         kfree(port->mc_list);
3184         free_netdev(port->netdev);
3185         port->adapter->active_ports--;
3186 }
3187
3188 static int ehea_setup_ports(struct ehea_adapter *adapter)
3189 {
3190         struct device_node *lhea_dn;
3191         struct device_node *eth_dn = NULL;
3192
3193         const u32 *dn_log_port_id;
3194         int i = 0;
3195
3196         lhea_dn = adapter->ofdev->node;
3197         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3198
3199                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3200                                                  NULL);
3201                 if (!dn_log_port_id) {
3202                         ehea_error("bad device node: eth_dn name=%s",
3203                                    eth_dn->full_name);
3204                         continue;
3205                 }
3206
3207                 if (ehea_add_adapter_mr(adapter)) {
3208                         ehea_error("creating MR failed");
3209                         of_node_put(eth_dn);
3210                         return -EIO;
3211                 }
3212
3213                 adapter->port[i] = ehea_setup_single_port(adapter,
3214                                                           *dn_log_port_id,
3215                                                           eth_dn);
3216                 if (adapter->port[i])
3217                         ehea_info("%s -> logical port id #%d",
3218                                   adapter->port[i]->netdev->name,
3219                                   *dn_log_port_id);
3220                 else
3221                         ehea_remove_adapter_mr(adapter);
3222
3223                 i++;
3224         };
3225         return 0;
3226 }
3227
3228 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3229                                            u32 logical_port_id)
3230 {
3231         struct device_node *lhea_dn;
3232         struct device_node *eth_dn = NULL;
3233         const u32 *dn_log_port_id;
3234
3235         lhea_dn = adapter->ofdev->node;
3236         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3237
3238                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3239                                                  NULL);
3240                 if (dn_log_port_id)
3241                         if (*dn_log_port_id == logical_port_id)
3242                                 return eth_dn;
3243         };
3244
3245         return NULL;
3246 }
3247
3248 static ssize_t ehea_probe_port(struct device *dev,
3249                                struct device_attribute *attr,
3250                                const char *buf, size_t count)
3251 {
3252         struct ehea_adapter *adapter = dev->driver_data;
3253         struct ehea_port *port;
3254         struct device_node *eth_dn = NULL;
3255         int i;
3256
3257         u32 logical_port_id;
3258
3259         sscanf(buf, "%d", &logical_port_id);
3260
3261         port = ehea_get_port(adapter, logical_port_id);
3262
3263         if (port) {
3264                 ehea_info("adding port with logical port id=%d failed. port "
3265                           "already configured as %s.", logical_port_id,
3266                           port->netdev->name);
3267                 return -EINVAL;
3268         }
3269
3270         eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3271
3272         if (!eth_dn) {
3273                 ehea_info("no logical port with id %d found", logical_port_id);
3274                 return -EINVAL;
3275         }
3276
3277         if (ehea_add_adapter_mr(adapter)) {
3278                 ehea_error("creating MR failed");
3279                 return -EIO;
3280         }
3281
3282         port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3283
3284         of_node_put(eth_dn);
3285
3286         if (port) {
3287                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3288                         if (!adapter->port[i]) {
3289                                 adapter->port[i] = port;
3290                                 break;
3291                         }
3292
3293                 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3294                           logical_port_id);
3295         } else {
3296                 ehea_remove_adapter_mr(adapter);
3297                 return -EIO;
3298         }
3299
3300         return (ssize_t) count;
3301 }
3302
3303 static ssize_t ehea_remove_port(struct device *dev,
3304                                 struct device_attribute *attr,
3305                                 const char *buf, size_t count)
3306 {
3307         struct ehea_adapter *adapter = dev->driver_data;
3308         struct ehea_port *port;
3309         int i;
3310         u32 logical_port_id;
3311
3312         sscanf(buf, "%d", &logical_port_id);
3313
3314         port = ehea_get_port(adapter, logical_port_id);
3315
3316         if (port) {
3317                 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3318                           logical_port_id);
3319
3320                 ehea_shutdown_single_port(port);
3321
3322                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3323                         if (adapter->port[i] == port) {
3324                                 adapter->port[i] = NULL;
3325                                 break;
3326                         }
3327         } else {
3328                 ehea_error("removing port with logical port id=%d failed. port "
3329                            "not configured.", logical_port_id);
3330                 return -EINVAL;
3331         }
3332
3333         ehea_remove_adapter_mr(adapter);
3334
3335         return (ssize_t) count;
3336 }
3337
3338 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3339 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3340
3341 int ehea_create_device_sysfs(struct of_device *dev)
3342 {
3343         int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3344         if (ret)
3345                 goto out;
3346
3347         ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3348 out:
3349         return ret;
3350 }
3351
3352 void ehea_remove_device_sysfs(struct of_device *dev)
3353 {
3354         device_remove_file(&dev->dev, &dev_attr_probe_port);
3355         device_remove_file(&dev->dev, &dev_attr_remove_port);
3356 }
3357
3358 static int __devinit ehea_probe_adapter(struct of_device *dev,
3359                                         const struct of_device_id *id)
3360 {
3361         struct ehea_adapter *adapter;
3362         const u64 *adapter_handle;
3363         int ret;
3364
3365         if (!dev || !dev->node) {
3366                 ehea_error("Invalid ibmebus device probed");
3367                 return -EINVAL;
3368         }
3369         mutex_lock(&ehea_fw_handles.lock);
3370
3371         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3372         if (!adapter) {
3373                 ret = -ENOMEM;
3374                 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3375                 goto out;
3376         }
3377
3378         list_add(&adapter->list, &adapter_list);
3379
3380         adapter->ofdev = dev;
3381
3382         adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
3383                                          NULL);
3384         if (adapter_handle)
3385                 adapter->handle = *adapter_handle;
3386
3387         if (!adapter->handle) {
3388                 dev_err(&dev->dev, "failed getting handle for adapter"
3389                         " '%s'\n", dev->node->full_name);
3390                 ret = -ENODEV;
3391                 goto out_free_ad;
3392         }
3393
3394         adapter->pd = EHEA_PD_ID;
3395
3396         dev->dev.driver_data = adapter;
3397
3398
3399         /* initialize adapter and ports */
3400         /* get adapter properties */
3401         ret = ehea_sense_adapter_attr(adapter);
3402         if (ret) {
3403                 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3404                 goto out_free_ad;
3405         }
3406
3407         adapter->neq = ehea_create_eq(adapter,
3408                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3409         if (!adapter->neq) {
3410                 ret = -EIO;
3411                 dev_err(&dev->dev, "NEQ creation failed\n");
3412                 goto out_free_ad;
3413         }
3414
3415         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3416                      (unsigned long)adapter);
3417
3418         ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3419                                   ehea_interrupt_neq, IRQF_DISABLED,
3420                                   "ehea_neq", adapter);
3421         if (ret) {
3422                 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3423                 goto out_kill_eq;
3424         }
3425
3426         ret = ehea_create_device_sysfs(dev);
3427         if (ret)
3428                 goto out_free_irq;
3429
3430         ret = ehea_setup_ports(adapter);
3431         if (ret) {
3432                 dev_err(&dev->dev, "setup_ports failed\n");
3433                 goto out_rem_dev_sysfs;
3434         }
3435
3436         ret = 0;
3437         goto out;
3438
3439 out_rem_dev_sysfs:
3440         ehea_remove_device_sysfs(dev);
3441
3442 out_free_irq:
3443         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3444
3445 out_kill_eq:
3446         ehea_destroy_eq(adapter->neq);
3447
3448 out_free_ad:
3449         kfree(adapter);
3450
3451 out:
3452         ehea_update_firmware_handles();
3453         mutex_unlock(&ehea_fw_handles.lock);
3454         return ret;
3455 }
3456
3457 static int __devexit ehea_remove(struct of_device *dev)
3458 {
3459         struct ehea_adapter *adapter = dev->dev.driver_data;
3460         int i;
3461
3462         for (i = 0; i < EHEA_MAX_PORTS; i++)
3463                 if (adapter->port[i]) {
3464                         ehea_shutdown_single_port(adapter->port[i]);
3465                         adapter->port[i] = NULL;
3466                 }
3467
3468         ehea_remove_device_sysfs(dev);
3469
3470         flush_scheduled_work();
3471
3472         mutex_lock(&ehea_fw_handles.lock);
3473
3474         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3475         tasklet_kill(&adapter->neq_tasklet);
3476
3477         ehea_destroy_eq(adapter->neq);
3478         ehea_remove_adapter_mr(adapter);
3479         list_del(&adapter->list);
3480         kfree(adapter);
3481
3482         ehea_update_firmware_handles();
3483         mutex_unlock(&ehea_fw_handles.lock);
3484
3485         return 0;
3486 }
3487
3488 void ehea_crash_handler(void)
3489 {
3490         int i;
3491
3492         if (ehea_fw_handles.arr)
3493                 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3494                         ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3495                                              ehea_fw_handles.arr[i].fwh,
3496                                              FORCE_FREE);
3497
3498         if (ehea_bcmc_regs.arr)
3499                 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3500                         ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3501                                               ehea_bcmc_regs.arr[i].port_id,
3502                                               ehea_bcmc_regs.arr[i].reg_type,
3503                                               ehea_bcmc_regs.arr[i].macaddr,
3504                                               0, H_DEREG_BCMC);
3505 }
3506
3507 static int ehea_mem_notifier(struct notifier_block *nb,
3508                              unsigned long action, void *data)
3509 {
3510         switch (action) {
3511         case MEM_OFFLINE:
3512                 ehea_info("memory has been removed");
3513                 ehea_rereg_mrs(NULL);
3514                 break;
3515         default:
3516                 break;
3517         }
3518         return NOTIFY_OK;
3519 }
3520
3521 static struct notifier_block ehea_mem_nb = {
3522         .notifier_call = ehea_mem_notifier,
3523 };
3524
3525 static int ehea_reboot_notifier(struct notifier_block *nb,
3526                                 unsigned long action, void *unused)
3527 {
3528         if (action == SYS_RESTART) {
3529                 ehea_info("Reboot: freeing all eHEA resources");
3530                 ibmebus_unregister_driver(&ehea_driver);
3531         }
3532         return NOTIFY_DONE;
3533 }
3534
3535 static struct notifier_block ehea_reboot_nb = {
3536         .notifier_call = ehea_reboot_notifier,
3537 };
3538
3539 static int check_module_parm(void)
3540 {
3541         int ret = 0;
3542
3543         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3544             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3545                 ehea_info("Bad parameter: rq1_entries");
3546                 ret = -EINVAL;
3547         }
3548         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3549             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3550                 ehea_info("Bad parameter: rq2_entries");
3551                 ret = -EINVAL;
3552         }
3553         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3554             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3555                 ehea_info("Bad parameter: rq3_entries");
3556                 ret = -EINVAL;
3557         }
3558         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3559             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3560                 ehea_info("Bad parameter: sq_entries");
3561                 ret = -EINVAL;
3562         }
3563
3564         return ret;
3565 }
3566
3567 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3568                                       char *buf)
3569 {
3570         return sprintf(buf, "%d", EHEA_CAPABILITIES);
3571 }
3572
3573 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3574                    ehea_show_capabilities, NULL);
3575
3576 int __init ehea_module_init(void)
3577 {
3578         int ret;
3579
3580         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3581                DRV_VERSION);
3582
3583
3584         INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3585         memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3586         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3587
3588         mutex_init(&ehea_fw_handles.lock);
3589         mutex_init(&ehea_bcmc_regs.lock);
3590
3591         ret = check_module_parm();
3592         if (ret)
3593                 goto out;
3594
3595         ret = ehea_create_busmap();
3596         if (ret)
3597                 goto out;
3598
3599         ret = register_reboot_notifier(&ehea_reboot_nb);
3600         if (ret)
3601                 ehea_info("failed registering reboot notifier");
3602
3603         ret = register_memory_notifier(&ehea_mem_nb);
3604         if (ret)
3605                 ehea_info("failed registering memory remove notifier");
3606
3607         ret = crash_shutdown_register(&ehea_crash_handler);
3608         if (ret)
3609                 ehea_info("failed registering crash handler");
3610
3611         ret = ibmebus_register_driver(&ehea_driver);
3612         if (ret) {
3613                 ehea_error("failed registering eHEA device driver on ebus");
3614                 goto out2;
3615         }
3616
3617         ret = driver_create_file(&ehea_driver.driver,
3618                                  &driver_attr_capabilities);
3619         if (ret) {
3620                 ehea_error("failed to register capabilities attribute, ret=%d",
3621                            ret);
3622                 goto out3;
3623         }
3624
3625         return ret;
3626
3627 out3:
3628         ibmebus_unregister_driver(&ehea_driver);
3629 out2:
3630         unregister_memory_notifier(&ehea_mem_nb);
3631         unregister_reboot_notifier(&ehea_reboot_nb);
3632         crash_shutdown_unregister(&ehea_crash_handler);
3633 out:
3634         return ret;
3635 }
3636
3637 static void __exit ehea_module_exit(void)
3638 {
3639         int ret;
3640
3641         flush_scheduled_work();
3642         driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3643         ibmebus_unregister_driver(&ehea_driver);
3644         unregister_reboot_notifier(&ehea_reboot_nb);
3645         ret = crash_shutdown_unregister(&ehea_crash_handler);
3646         if (ret)
3647                 ehea_info("failed unregistering crash handler");
3648         unregister_memory_notifier(&ehea_mem_nb);
3649         kfree(ehea_fw_handles.arr);
3650         kfree(ehea_bcmc_regs.arr);
3651         ehea_destroy_busmap();
3652 }
3653
3654 module_init(ehea_module_init);
3655 module_exit(ehea_module_exit);