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   1 /*
   2  *  linux/drivers/net/ehea/ehea_main.c
   3  *
   4  *  eHEA ethernet device driver for IBM eServer System p
   5  *
   6  *  (C) Copyright IBM Corp. 2006
   7  *
   8  *  Authors:
   9  *       Christoph Raisch <raisch@de.ibm.com>
  10  *       Jan-Bernd Themann <themann@de.ibm.com>
  11  *       Thomas Klein <tklein@de.ibm.com>
  12  *
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2, or (at your option)
  17  * any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/in.h>
  30 #include <linux/ip.h>
  31 #include <linux/tcp.h>
  32 #include <linux/udp.h>
  33 #include <linux/if.h>
  34 #include <linux/list.h>
  35 #include <linux/if_ether.h>
  36 #include <linux/notifier.h>
  37 #include <linux/reboot.h>
  38 #include <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 static unsigned long 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 MODULE_DEVICE_TABLE(of, ehea_device_table);
 122
 123 static struct of_platform_driver ehea_driver = {
 124         .name = "ehea",
 125         .match_table = ehea_device_table,
 126         .probe = ehea_probe_adapter,
 127         .remove = ehea_remove,
 128 };
 129
 130 void ehea_dump(void *adr, int len, char *msg)
 131 {
 132         int x;
 133         unsigned char *deb = adr;
 134         for (x = 0; x < len; x += 16) {
 135                 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
 136                           deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
 137                 deb += 16;
 138         }
 139 }
 140
 141 void ehea_schedule_port_reset(struct ehea_port *port)
 142 {
 143         if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
 144                 schedule_work(&port->reset_task);
 145 }
 146
 147 static void ehea_update_firmware_handles(void)
 148 {
 149         struct ehea_fw_handle_entry *arr = NULL;
 150         struct ehea_adapter *adapter;
 151         int num_adapters = 0;
 152         int num_ports = 0;
 153         int num_portres = 0;
 154         int i = 0;
 155         int num_fw_handles, k, l;
 156
 157         /* Determine number of handles */
 158         list_for_each_entry(adapter, &adapter_list, list) {
 159                 num_adapters++;
 160
 161                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 162                         struct ehea_port *port = adapter->port[k];
 163
 164                         if (!port || (port->state != EHEA_PORT_UP))
 165                                 continue;
 166
 167                         num_ports++;
 168                         num_portres += port->num_def_qps + port->num_add_tx_qps;
 169                 }
 170         }
 171
 172         num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
 173                          num_ports * EHEA_NUM_PORT_FW_HANDLES +
 174                          num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
 175
 176         if (num_fw_handles) {
 177                 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
 178                 if (!arr)
 179                         return;  /* Keep the existing array */
 180         } else
 181                 goto out_update;
 182
 183         list_for_each_entry(adapter, &adapter_list, list) {
 184                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 185                         struct ehea_port *port = adapter->port[k];
 186
 187                         if (!port || (port->state != EHEA_PORT_UP))
 188                                 continue;
 189
 190                         for (l = 0;
 191                              l < port->num_def_qps + port->num_add_tx_qps;
 192                              l++) {
 193                                 struct ehea_port_res *pr = &port->port_res[l];
 194
 195                                 arr[i].adh = adapter->handle;
 196                                 arr[i++].fwh = pr->qp->fw_handle;
 197                                 arr[i].adh = adapter->handle;
 198                                 arr[i++].fwh = pr->send_cq->fw_handle;
 199                                 arr[i].adh = adapter->handle;
 200                                 arr[i++].fwh = pr->recv_cq->fw_handle;
 201                                 arr[i].adh = adapter->handle;
 202                                 arr[i++].fwh = pr->eq->fw_handle;
 203                                 arr[i].adh = adapter->handle;
 204                                 arr[i++].fwh = pr->send_mr.handle;
 205                                 arr[i].adh = adapter->handle;
 206                                 arr[i++].fwh = pr->recv_mr.handle;
 207                         }
 208                         arr[i].adh = adapter->handle;
 209                         arr[i++].fwh = port->qp_eq->fw_handle;
 210                 }
 211
 212                 arr[i].adh = adapter->handle;
 213                 arr[i++].fwh = adapter->neq->fw_handle;
 214
 215                 if (adapter->mr.handle) {
 216                         arr[i].adh = adapter->handle;
 217                         arr[i++].fwh = adapter->mr.handle;
 218                 }
 219         }
 220
 221 out_update:
 222         kfree(ehea_fw_handles.arr);
 223         ehea_fw_handles.arr = arr;
 224         ehea_fw_handles.num_entries = i;
 225 }
 226
 227 static void ehea_update_bcmc_registrations(void)
 228 {
 229         struct ehea_bcmc_reg_entry *arr = NULL;
 230         struct ehea_adapter *adapter;
 231         struct ehea_mc_list *mc_entry;
 232         int num_registrations = 0;
 233         int i = 0;
 234         int k;
 235
 236         /* Determine number of registrations */
 237         list_for_each_entry(adapter, &adapter_list, list)
 238                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 239                         struct ehea_port *port = adapter->port[k];
 240
 241                         if (!port || (port->state != EHEA_PORT_UP))
 242                                 continue;
 243
 244                         num_registrations += 2; /* Broadcast registrations */
 245
 246                         list_for_each_entry(mc_entry, &port->mc_list->list,list)
 247                                 num_registrations += 2;
 248                 }
 249
 250         if (num_registrations) {
 251                 arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
 252                 if (!arr)
 253                         return;  /* Keep the existing array */
 254         } else
 255                 goto out_update;
 256
 257         list_for_each_entry(adapter, &adapter_list, list) {
 258                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 259                         struct ehea_port *port = adapter->port[k];
 260
 261                         if (!port || (port->state != EHEA_PORT_UP))
 262                                 continue;
 263
 264                         arr[i].adh = adapter->handle;
 265                         arr[i].port_id = port->logical_port_id;
 266                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 267                                           EHEA_BCMC_UNTAGGED;
 268                         arr[i++].macaddr = port->mac_addr;
 269
 270                         arr[i].adh = adapter->handle;
 271                         arr[i].port_id = port->logical_port_id;
 272                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 273                                           EHEA_BCMC_VLANID_ALL;
 274                         arr[i++].macaddr = port->mac_addr;
 275
 276                         list_for_each_entry(mc_entry,
 277                                             &port->mc_list->list, list) {
 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_UNTAGGED;
 283                                 arr[i++].macaddr = mc_entry->macaddr;
 284
 285                                 arr[i].adh = adapter->handle;
 286                                 arr[i].port_id = port->logical_port_id;
 287                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 288                                                   EHEA_BCMC_MULTICAST |
 289                                                   EHEA_BCMC_VLANID_ALL;
 290                                 arr[i++].macaddr = mc_entry->macaddr;
 291                         }
 292                 }
 293         }
 294
 295 out_update:
 296         kfree(ehea_bcmc_regs.arr);
 297         ehea_bcmc_regs.arr = arr;
 298         ehea_bcmc_regs.num_entries = i;
 299 }
 300
 301 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
 302 {
 303         struct ehea_port *port = netdev_priv(dev);
 304         struct net_device_stats *stats = &port->stats;
 305         struct hcp_ehea_port_cb2 *cb2;
 306         u64 hret, rx_packets, tx_packets;
 307         int i;
 308
 309         memset(stats, 0, sizeof(*stats));
 310
 311         cb2 = (void *)get_zeroed_page(GFP_ATOMIC);
 312         if (!cb2) {
 313                 ehea_error("no mem for cb2");
 314                 goto out;
 315         }
 316
 317         hret = ehea_h_query_ehea_port(port->adapter->handle,
 318                                       port->logical_port_id,
 319                                       H_PORT_CB2, H_PORT_CB2_ALL, cb2);
 320         if (hret != H_SUCCESS) {
 321                 ehea_error("query_ehea_port failed");
 322                 goto out_herr;
 323         }
 324
 325         if (netif_msg_hw(port))
 326                 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
 327
 328         rx_packets = 0;
 329         for (i = 0; i < port->num_def_qps; i++)
 330                 rx_packets += port->port_res[i].rx_packets;
 331
 332         tx_packets = 0;
 333         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
 334                 tx_packets += port->port_res[i].tx_packets;
 335
 336         stats->tx_packets = tx_packets;
 337         stats->multicast = cb2->rxmcp;
 338         stats->rx_errors = cb2->rxuerr;
 339         stats->rx_bytes = cb2->rxo;
 340         stats->tx_bytes = cb2->txo;
 341         stats->rx_packets = rx_packets;
 342
 343 out_herr:
 344         free_page((unsigned long)cb2);
 345 out:
 346         return stats;
 347 }
 348
 349 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 350 {
 351         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 352         struct net_device *dev = pr->port->netdev;
 353         int max_index_mask = pr->rq1_skba.len - 1;
 354         int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
 355         int adder = 0;
 356         int i;
 357
 358         pr->rq1_skba.os_skbs = 0;
 359
 360         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 361                 if (nr_of_wqes > 0)
 362                         pr->rq1_skba.index = index;
 363                 pr->rq1_skba.os_skbs = fill_wqes;
 364                 return;
 365         }
 366
 367         for (i = 0; i < fill_wqes; i++) {
 368                 if (!skb_arr_rq1[index]) {
 369                         skb_arr_rq1[index] = netdev_alloc_skb(dev,
 370                                                               EHEA_L_PKT_SIZE);
 371                         if (!skb_arr_rq1[index]) {
 372                                 pr->rq1_skba.os_skbs = fill_wqes - i;
 373                                 break;
 374                         }
 375                 }
 376                 index--;
 377                 index &= max_index_mask;
 378                 adder++;
 379         }
 380
 381         if (adder == 0)
 382                 return;
 383
 384         /* Ring doorbell */
 385         ehea_update_rq1a(pr->qp, adder);
 386 }
 387
 388 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 389 {
 390         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 391         struct net_device *dev = pr->port->netdev;
 392         int i;
 393
 394         for (i = 0; i < pr->rq1_skba.len; i++) {
 395                 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
 396                 if (!skb_arr_rq1[i])
 397                         break;
 398         }
 399         /* Ring doorbell */
 400         ehea_update_rq1a(pr->qp, nr_rq1a);
 401 }
 402
 403 static int ehea_refill_rq_def(struct ehea_port_res *pr,
 404                               struct ehea_q_skb_arr *q_skba, int rq_nr,
 405                               int num_wqes, int wqe_type, int packet_size)
 406 {
 407         struct net_device *dev = pr->port->netdev;
 408         struct ehea_qp *qp = pr->qp;
 409         struct sk_buff **skb_arr = q_skba->arr;
 410         struct ehea_rwqe *rwqe;
 411         int i, index, max_index_mask, fill_wqes;
 412         int adder = 0;
 413         int ret = 0;
 414
 415         fill_wqes = q_skba->os_skbs + num_wqes;
 416         q_skba->os_skbs = 0;
 417
 418         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 419                 q_skba->os_skbs = fill_wqes;
 420                 return ret;
 421         }
 422
 423         index = q_skba->index;
 424         max_index_mask = q_skba->len - 1;
 425         for (i = 0; i < fill_wqes; i++) {
 426                 u64 tmp_addr;
 427                 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
 428                 if (!skb) {
 429                         q_skba->os_skbs = fill_wqes - i;
 430                         if (q_skba->os_skbs == q_skba->len - 2) {
 431                                 ehea_info("%s: rq%i ran dry - no mem for skb",
 432                                           pr->port->netdev->name, rq_nr);
 433                                 ret = -ENOMEM;
 434                         }
 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                 ehea_schedule_port_reset(pr->port);
 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 (ntohs(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                 } else {
 725                         pr->p_stats.poll_receive_errors++;
 726                         port_reset = ehea_treat_poll_error(pr, rq, cqe,
 727                                                            &processed_rq2,
 728                                                            &processed_rq3);
 729                         if (port_reset)
 730                                 break;
 731                 }
 732                 cqe = ehea_poll_rq1(qp, &wqe_index);
 733         }
 734         if (use_lro)
 735                 lro_flush_all(&pr->lro_mgr);
 736
 737         pr->rx_packets += processed;
 738
 739         ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
 740         ehea_refill_rq2(pr, processed_rq2);
 741         ehea_refill_rq3(pr, processed_rq3);
 742
 743         return processed;
 744 }
 745
 746 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
 747 {
 748         struct sk_buff *skb;
 749         struct ehea_cq *send_cq = pr->send_cq;
 750         struct ehea_cqe *cqe;
 751         int quota = my_quota;
 752         int cqe_counter = 0;
 753         int swqe_av = 0;
 754         int index;
 755         unsigned long flags;
 756
 757         cqe = ehea_poll_cq(send_cq);
 758         while (cqe && (quota > 0)) {
 759                 ehea_inc_cq(send_cq);
 760
 761                 cqe_counter++;
 762                 rmb();
 763                 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
 764                         ehea_error("Send Completion Error: Resetting port");
 765                         if (netif_msg_tx_err(pr->port))
 766                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
 767                         ehea_schedule_port_reset(pr->port);
 768                         break;
 769                 }
 770
 771                 if (netif_msg_tx_done(pr->port))
 772                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 773
 774                 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
 775                            == EHEA_SWQE2_TYPE)) {
 776
 777                         index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 778                         skb = pr->sq_skba.arr[index];
 779                         dev_kfree_skb(skb);
 780                         pr->sq_skba.arr[index] = NULL;
 781                 }
 782
 783                 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
 784                 quota--;
 785
 786                 cqe = ehea_poll_cq(send_cq);
 787         };
 788
 789         ehea_update_feca(send_cq, cqe_counter);
 790         atomic_add(swqe_av, &pr->swqe_avail);
 791
 792         spin_lock_irqsave(&pr->netif_queue, flags);
 793
 794         if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
 795                                   >= pr->swqe_refill_th)) {
 796                 netif_wake_queue(pr->port->netdev);
 797                 pr->queue_stopped = 0;
 798         }
 799         spin_unlock_irqrestore(&pr->netif_queue, flags);
 800
 801         return cqe;
 802 }
 803
 804 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
 805 #define EHEA_POLL_MAX_CQES 65535
 806
 807 static int ehea_poll(struct napi_struct *napi, int budget)
 808 {
 809         struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
 810                                                 napi);
 811         struct net_device *dev = pr->port->netdev;
 812         struct ehea_cqe *cqe;
 813         struct ehea_cqe *cqe_skb = NULL;
 814         int force_irq, wqe_index;
 815         int rx = 0;
 816
 817         force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
 818         cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 819
 820         if (!force_irq)
 821                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 822
 823         while ((rx != budget) || force_irq) {
 824                 pr->poll_counter = 0;
 825                 force_irq = 0;
 826                 napi_complete(napi);
 827                 ehea_reset_cq_ep(pr->recv_cq);
 828                 ehea_reset_cq_ep(pr->send_cq);
 829                 ehea_reset_cq_n1(pr->recv_cq);
 830                 ehea_reset_cq_n1(pr->send_cq);
 831                 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
 832                 cqe_skb = ehea_poll_cq(pr->send_cq);
 833
 834                 if (!cqe && !cqe_skb)
 835                         return rx;
 836
 837                 if (!napi_reschedule(napi))
 838                         return rx;
 839
 840                 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 841                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 842         }
 843
 844         pr->poll_counter++;
 845         return rx;
 846 }
 847
 848 #ifdef CONFIG_NET_POLL_CONTROLLER
 849 static void ehea_netpoll(struct net_device *dev)
 850 {
 851         struct ehea_port *port = netdev_priv(dev);
 852         int i;
 853
 854         for (i = 0; i < port->num_def_qps; i++)
 855                 napi_schedule(&port->port_res[i].napi);
 856 }
 857 #endif
 858
 859 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 860 {
 861         struct ehea_port_res *pr = param;
 862
 863         napi_schedule(&pr->napi);
 864
 865         return IRQ_HANDLED;
 866 }
 867
 868 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 869 {
 870         struct ehea_port *port = param;
 871         struct ehea_eqe *eqe;
 872         struct ehea_qp *qp;
 873         u32 qp_token;
 874
 875         eqe = ehea_poll_eq(port->qp_eq);
 876
 877         while (eqe) {
 878                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 879                 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
 880                            eqe->entry, qp_token);
 881
 882                 qp = port->port_res[qp_token].qp;
 883                 ehea_error_data(port->adapter, qp->fw_handle);
 884                 eqe = ehea_poll_eq(port->qp_eq);
 885         }
 886
 887         ehea_schedule_port_reset(port);
 888
 889         return IRQ_HANDLED;
 890 }
 891
 892 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 893                                        int logical_port)
 894 {
 895         int i;
 896
 897         for (i = 0; i < EHEA_MAX_PORTS; i++)
 898                 if (adapter->port[i])
 899                         if (adapter->port[i]->logical_port_id == logical_port)
 900                                 return adapter->port[i];
 901         return NULL;
 902 }
 903
 904 int ehea_sense_port_attr(struct ehea_port *port)
 905 {
 906         int ret;
 907         u64 hret;
 908         struct hcp_ehea_port_cb0 *cb0;
 909
 910         /* may be called via ehea_neq_tasklet() */
 911         cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
 912         if (!cb0) {
 913                 ehea_error("no mem for cb0");
 914                 ret = -ENOMEM;
 915                 goto out;
 916         }
 917
 918         hret = ehea_h_query_ehea_port(port->adapter->handle,
 919                                       port->logical_port_id, H_PORT_CB0,
 920                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 921                                       cb0);
 922         if (hret != H_SUCCESS) {
 923                 ret = -EIO;
 924                 goto out_free;
 925         }
 926
 927         /* MAC address */
 928         port->mac_addr = cb0->port_mac_addr << 16;
 929
 930         if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
 931                 ret = -EADDRNOTAVAIL;
 932                 goto out_free;
 933         }
 934
 935         /* Port speed */
 936         switch (cb0->port_speed) {
 937         case H_SPEED_10M_H:
 938                 port->port_speed = EHEA_SPEED_10M;
 939                 port->full_duplex = 0;
 940                 break;
 941         case H_SPEED_10M_F:
 942                 port->port_speed = EHEA_SPEED_10M;
 943                 port->full_duplex = 1;
 944                 break;
 945         case H_SPEED_100M_H:
 946                 port->port_speed = EHEA_SPEED_100M;
 947                 port->full_duplex = 0;
 948                 break;
 949         case H_SPEED_100M_F:
 950                 port->port_speed = EHEA_SPEED_100M;
 951                 port->full_duplex = 1;
 952                 break;
 953         case H_SPEED_1G_F:
 954                 port->port_speed = EHEA_SPEED_1G;
 955                 port->full_duplex = 1;
 956                 break;
 957         case H_SPEED_10G_F:
 958                 port->port_speed = EHEA_SPEED_10G;
 959                 port->full_duplex = 1;
 960                 break;
 961         default:
 962                 port->port_speed = 0;
 963                 port->full_duplex = 0;
 964                 break;
 965         }
 966
 967         port->autoneg = 1;
 968         port->num_mcs = cb0->num_default_qps;
 969
 970         /* Number of default QPs */
 971         if (use_mcs)
 972                 port->num_def_qps = cb0->num_default_qps;
 973         else
 974                 port->num_def_qps = 1;
 975
 976         if (!port->num_def_qps) {
 977                 ret = -EINVAL;
 978                 goto out_free;
 979         }
 980
 981         port->num_tx_qps = num_tx_qps;
 982
 983         if (port->num_def_qps >= port->num_tx_qps)
 984                 port->num_add_tx_qps = 0;
 985         else
 986                 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
 987
 988         ret = 0;
 989 out_free:
 990         if (ret || netif_msg_probe(port))
 991                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
 992         free_page((unsigned long)cb0);
 993 out:
 994         return ret;
 995 }
 996
 997 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
 998 {
 999         struct hcp_ehea_port_cb4 *cb4;
1000         u64 hret;
1001         int ret = 0;
1002
1003         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1004         if (!cb4) {
1005                 ehea_error("no mem for cb4");
1006                 ret = -ENOMEM;
1007                 goto out;
1008         }
1009
1010         cb4->port_speed = port_speed;
1011
1012         netif_carrier_off(port->netdev);
1013
1014         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1015                                        port->logical_port_id,
1016                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1017         if (hret == H_SUCCESS) {
1018                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1019
1020                 hret = ehea_h_query_ehea_port(port->adapter->handle,
1021                                               port->logical_port_id,
1022                                               H_PORT_CB4, H_PORT_CB4_SPEED,
1023                                               cb4);
1024                 if (hret == H_SUCCESS) {
1025                         switch (cb4->port_speed) {
1026                         case H_SPEED_10M_H:
1027                                 port->port_speed = EHEA_SPEED_10M;
1028                                 port->full_duplex = 0;
1029                                 break;
1030                         case H_SPEED_10M_F:
1031                                 port->port_speed = EHEA_SPEED_10M;
1032                                 port->full_duplex = 1;
1033                                 break;
1034                         case H_SPEED_100M_H:
1035                                 port->port_speed = EHEA_SPEED_100M;
1036                                 port->full_duplex = 0;
1037                                 break;
1038                         case H_SPEED_100M_F:
1039                                 port->port_speed = EHEA_SPEED_100M;
1040                                 port->full_duplex = 1;
1041                                 break;
1042                         case H_SPEED_1G_F:
1043                                 port->port_speed = EHEA_SPEED_1G;
1044                                 port->full_duplex = 1;
1045                                 break;
1046                         case H_SPEED_10G_F:
1047                                 port->port_speed = EHEA_SPEED_10G;
1048                                 port->full_duplex = 1;
1049                                 break;
1050                         default:
1051                                 port->port_speed = 0;
1052                                 port->full_duplex = 0;
1053                                 break;
1054                         }
1055                 } else {
1056                         ehea_error("Failed sensing port speed");
1057                         ret = -EIO;
1058                 }
1059         } else {
1060                 if (hret == H_AUTHORITY) {
1061                         ehea_info("Hypervisor denied setting port speed");
1062                         ret = -EPERM;
1063                 } else {
1064                         ret = -EIO;
1065                         ehea_error("Failed setting port speed");
1066                 }
1067         }
1068         if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1069                 netif_carrier_on(port->netdev);
1070
1071         free_page((unsigned long)cb4);
1072 out:
1073         return ret;
1074 }
1075
1076 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1077 {
1078         int ret;
1079         u8 ec;
1080         u8 portnum;
1081         struct ehea_port *port;
1082
1083         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1084         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1085         port = ehea_get_port(adapter, portnum);
1086
1087         switch (ec) {
1088         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
1089
1090                 if (!port) {
1091                         ehea_error("unknown portnum %x", portnum);
1092                         break;
1093                 }
1094
1095                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1096                         if (!netif_carrier_ok(port->netdev)) {
1097                                 ret = ehea_sense_port_attr(port);
1098                                 if (ret) {
1099                                         ehea_error("failed resensing port "
1100                                                    "attributes");
1101                                         break;
1102                                 }
1103
1104                                 if (netif_msg_link(port))
1105                                         ehea_info("%s: Logical port up: %dMbps "
1106                                                   "%s Duplex",
1107                                                   port->netdev->name,
1108                                                   port->port_speed,
1109                                                   port->full_duplex ==
1110                                                   1 ? "Full" : "Half");
1111
1112                                 netif_carrier_on(port->netdev);
1113                                 netif_wake_queue(port->netdev);
1114                         }
1115                 } else
1116                         if (netif_carrier_ok(port->netdev)) {
1117                                 if (netif_msg_link(port))
1118                                         ehea_info("%s: Logical port down",
1119                                                   port->netdev->name);
1120                                 netif_carrier_off(port->netdev);
1121                                 netif_stop_queue(port->netdev);
1122                         }
1123
1124                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1125                         port->phy_link = EHEA_PHY_LINK_UP;
1126                         if (netif_msg_link(port))
1127                                 ehea_info("%s: Physical port up",
1128                                           port->netdev->name);
1129                         if (prop_carrier_state)
1130                                 netif_carrier_on(port->netdev);
1131                 } else {
1132                         port->phy_link = EHEA_PHY_LINK_DOWN;
1133                         if (netif_msg_link(port))
1134                                 ehea_info("%s: Physical port down",
1135                                           port->netdev->name);
1136                         if (prop_carrier_state)
1137                                 netif_carrier_off(port->netdev);
1138                 }
1139
1140                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1141                         ehea_info("External switch port is primary port");
1142                 else
1143                         ehea_info("External switch port is backup port");
1144
1145                 break;
1146         case EHEA_EC_ADAPTER_MALFUNC:
1147                 ehea_error("Adapter malfunction");
1148                 break;
1149         case EHEA_EC_PORT_MALFUNC:
1150                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1151                 netif_carrier_off(port->netdev);
1152                 netif_stop_queue(port->netdev);
1153                 break;
1154         default:
1155                 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1156                 break;
1157         }
1158 }
1159
1160 static void ehea_neq_tasklet(unsigned long data)
1161 {
1162         struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1163         struct ehea_eqe *eqe;
1164         u64 event_mask;
1165
1166         eqe = ehea_poll_eq(adapter->neq);
1167         ehea_debug("eqe=%p", eqe);
1168
1169         while (eqe) {
1170                 ehea_debug("*eqe=%lx", eqe->entry);
1171                 ehea_parse_eqe(adapter, eqe->entry);
1172                 eqe = ehea_poll_eq(adapter->neq);
1173                 ehea_debug("next eqe=%p", eqe);
1174         }
1175
1176         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1177                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1178                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1179
1180         ehea_h_reset_events(adapter->handle,
1181                             adapter->neq->fw_handle, event_mask);
1182 }
1183
1184 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1185 {
1186         struct ehea_adapter *adapter = param;
1187         tasklet_hi_schedule(&adapter->neq_tasklet);
1188         return IRQ_HANDLED;
1189 }
1190
1191
1192 static int ehea_fill_port_res(struct ehea_port_res *pr)
1193 {
1194         int ret;
1195         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1196
1197         ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1198                                - init_attr->act_nr_rwqes_rq2
1199                                - init_attr->act_nr_rwqes_rq3 - 1);
1200
1201         ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1202
1203         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1204
1205         return ret;
1206 }
1207
1208 static int ehea_reg_interrupts(struct net_device *dev)
1209 {
1210         struct ehea_port *port = netdev_priv(dev);
1211         struct ehea_port_res *pr;
1212         int i, ret;
1213
1214
1215         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1216                  dev->name);
1217
1218         ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1219                                   ehea_qp_aff_irq_handler,
1220                                   IRQF_DISABLED, port->int_aff_name, port);
1221         if (ret) {
1222                 ehea_error("failed registering irq for qp_aff_irq_handler:"
1223                            "ist=%X", port->qp_eq->attr.ist1);
1224                 goto out_free_qpeq;
1225         }
1226
1227         if (netif_msg_ifup(port))
1228                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1229                           "registered", port->qp_eq->attr.ist1);
1230
1231
1232         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1233                 pr = &port->port_res[i];
1234                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1235                          "%s-queue%d", dev->name, i);
1236                 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1237                                           ehea_recv_irq_handler,
1238                                           IRQF_DISABLED, pr->int_send_name,
1239                                           pr);
1240                 if (ret) {
1241                         ehea_error("failed registering irq for ehea_queue "
1242                                    "port_res_nr:%d, ist=%X", i,
1243                                    pr->eq->attr.ist1);
1244                         goto out_free_req;
1245                 }
1246                 if (netif_msg_ifup(port))
1247                         ehea_info("irq_handle 0x%X for function ehea_queue_int "
1248                                   "%d registered", pr->eq->attr.ist1, i);
1249         }
1250 out:
1251         return ret;
1252
1253
1254 out_free_req:
1255         while (--i >= 0) {
1256                 u32 ist = port->port_res[i].eq->attr.ist1;
1257                 ibmebus_free_irq(ist, &port->port_res[i]);
1258         }
1259
1260 out_free_qpeq:
1261         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1262         i = port->num_def_qps;
1263
1264         goto out;
1265
1266 }
1267
1268 static void ehea_free_interrupts(struct net_device *dev)
1269 {
1270         struct ehea_port *port = netdev_priv(dev);
1271         struct ehea_port_res *pr;
1272         int i;
1273
1274         /* send */
1275
1276         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1277                 pr = &port->port_res[i];
1278                 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1279                 if (netif_msg_intr(port))
1280                         ehea_info("free send irq for res %d with handle 0x%X",
1281                                   i, pr->eq->attr.ist1);
1282         }
1283
1284         /* associated events */
1285         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1286         if (netif_msg_intr(port))
1287                 ehea_info("associated event interrupt for handle 0x%X freed",
1288                           port->qp_eq->attr.ist1);
1289 }
1290
1291 static int ehea_configure_port(struct ehea_port *port)
1292 {
1293         int ret, i;
1294         u64 hret, mask;
1295         struct hcp_ehea_port_cb0 *cb0;
1296
1297         ret = -ENOMEM;
1298         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1299         if (!cb0)
1300                 goto out;
1301
1302         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1303                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1304                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1305                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1306                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1307                                       PXLY_RC_VLAN_FILTER)
1308                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1309
1310         for (i = 0; i < port->num_mcs; i++)
1311                 if (use_mcs)
1312                         cb0->default_qpn_arr[i] =
1313                                 port->port_res[i].qp->init_attr.qp_nr;
1314                 else
1315                         cb0->default_qpn_arr[i] =
1316                                 port->port_res[0].qp->init_attr.qp_nr;
1317
1318         if (netif_msg_ifup(port))
1319                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1320
1321         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1322              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1323
1324         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1325                                        port->logical_port_id,
1326                                        H_PORT_CB0, mask, cb0);
1327         ret = -EIO;
1328         if (hret != H_SUCCESS)
1329                 goto out_free;
1330
1331         ret = 0;
1332
1333 out_free:
1334         free_page((unsigned long)cb0);
1335 out:
1336         return ret;
1337 }
1338
1339 int ehea_gen_smrs(struct ehea_port_res *pr)
1340 {
1341         int ret;
1342         struct ehea_adapter *adapter = pr->port->adapter;
1343
1344         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1345         if (ret)
1346                 goto out;
1347
1348         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1349         if (ret)
1350                 goto out_free;
1351
1352         return 0;
1353
1354 out_free:
1355         ehea_rem_mr(&pr->send_mr);
1356 out:
1357         ehea_error("Generating SMRS failed\n");
1358         return -EIO;
1359 }
1360
1361 int ehea_rem_smrs(struct ehea_port_res *pr)
1362 {
1363         if ((ehea_rem_mr(&pr->send_mr))
1364             || (ehea_rem_mr(&pr->recv_mr)))
1365                 return -EIO;
1366         else
1367                 return 0;
1368 }
1369
1370 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1371 {
1372         int arr_size = sizeof(void *) * max_q_entries;
1373
1374         q_skba->arr = vmalloc(arr_size);
1375         if (!q_skba->arr)
1376                 return -ENOMEM;
1377
1378         memset(q_skba->arr, 0, arr_size);
1379
1380         q_skba->len = max_q_entries;
1381         q_skba->index = 0;
1382         q_skba->os_skbs = 0;
1383
1384         return 0;
1385 }
1386
1387 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1388                               struct port_res_cfg *pr_cfg, int queue_token)
1389 {
1390         struct ehea_adapter *adapter = port->adapter;
1391         enum ehea_eq_type eq_type = EHEA_EQ;
1392         struct ehea_qp_init_attr *init_attr = NULL;
1393         int ret = -EIO;
1394
1395         memset(pr, 0, sizeof(struct ehea_port_res));
1396
1397         pr->port = port;
1398         spin_lock_init(&pr->xmit_lock);
1399         spin_lock_init(&pr->netif_queue);
1400
1401         pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1402         if (!pr->eq) {
1403                 ehea_error("create_eq failed (eq)");
1404                 goto out_free;
1405         }
1406
1407         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1408                                      pr->eq->fw_handle,
1409                                      port->logical_port_id);
1410         if (!pr->recv_cq) {
1411                 ehea_error("create_cq failed (cq_recv)");
1412                 goto out_free;
1413         }
1414
1415         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1416                                      pr->eq->fw_handle,
1417                                      port->logical_port_id);
1418         if (!pr->send_cq) {
1419                 ehea_error("create_cq failed (cq_send)");
1420                 goto out_free;
1421         }
1422
1423         if (netif_msg_ifup(port))
1424                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1425                           pr->send_cq->attr.act_nr_of_cqes,
1426                           pr->recv_cq->attr.act_nr_of_cqes);
1427
1428         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1429         if (!init_attr) {
1430                 ret = -ENOMEM;
1431                 ehea_error("no mem for ehea_qp_init_attr");
1432                 goto out_free;
1433         }
1434
1435         init_attr->low_lat_rq1 = 1;
1436         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1437         init_attr->rq_count = 3;
1438         init_attr->qp_token = queue_token;
1439         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1440         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1441         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1442         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1443         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1444         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1445         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1446         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1447         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1448         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1449         init_attr->port_nr = port->logical_port_id;
1450         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1451         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1452         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1453
1454         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1455         if (!pr->qp) {
1456                 ehea_error("create_qp failed");
1457                 ret = -EIO;
1458                 goto out_free;
1459         }
1460
1461         if (netif_msg_ifup(port))
1462                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1463                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1464                           init_attr->act_nr_send_wqes,
1465                           init_attr->act_nr_rwqes_rq1,
1466                           init_attr->act_nr_rwqes_rq2,
1467                           init_attr->act_nr_rwqes_rq3);
1468
1469         pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1470
1471         ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1472         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1473         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1474         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1475         if (ret)
1476                 goto out_free;
1477
1478         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1479         if (ehea_gen_smrs(pr) != 0) {
1480                 ret = -EIO;
1481                 goto out_free;
1482         }
1483
1484         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1485
1486         kfree(init_attr);
1487
1488         netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1489
1490         pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1491         pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1492         pr->lro_mgr.lro_arr = pr->lro_desc;
1493         pr->lro_mgr.get_skb_header = get_skb_hdr;
1494         pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1495         pr->lro_mgr.dev = port->netdev;
1496         pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1497         pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1498
1499         ret = 0;
1500         goto out;
1501
1502 out_free:
1503         kfree(init_attr);
1504         vfree(pr->sq_skba.arr);
1505         vfree(pr->rq1_skba.arr);
1506         vfree(pr->rq2_skba.arr);
1507         vfree(pr->rq3_skba.arr);
1508         ehea_destroy_qp(pr->qp);
1509         ehea_destroy_cq(pr->send_cq);
1510         ehea_destroy_cq(pr->recv_cq);
1511         ehea_destroy_eq(pr->eq);
1512 out:
1513         return ret;
1514 }
1515
1516 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1517 {
1518         int ret, i;
1519
1520         ret = ehea_destroy_qp(pr->qp);
1521
1522         if (!ret) {
1523                 ehea_destroy_cq(pr->send_cq);
1524                 ehea_destroy_cq(pr->recv_cq);
1525                 ehea_destroy_eq(pr->eq);
1526
1527                 for (i = 0; i < pr->rq1_skba.len; i++)
1528                         if (pr->rq1_skba.arr[i])
1529                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1530
1531                 for (i = 0; i < pr->rq2_skba.len; i++)
1532                         if (pr->rq2_skba.arr[i])
1533                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1534
1535                 for (i = 0; i < pr->rq3_skba.len; i++)
1536                         if (pr->rq3_skba.arr[i])
1537                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1538
1539                 for (i = 0; i < pr->sq_skba.len; i++)
1540                         if (pr->sq_skba.arr[i])
1541                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1542
1543                 vfree(pr->rq1_skba.arr);
1544                 vfree(pr->rq2_skba.arr);
1545                 vfree(pr->rq3_skba.arr);
1546                 vfree(pr->sq_skba.arr);
1547                 ret = ehea_rem_smrs(pr);
1548         }
1549         return ret;
1550 }
1551
1552 /*
1553  * The write_* functions store information in swqe which is used by
1554  * the hardware to calculate the ip/tcp/udp checksum
1555  */
1556
1557 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1558                                       const struct sk_buff *skb)
1559 {
1560         swqe->ip_start = skb_network_offset(skb);
1561         swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1562 }
1563
1564 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1565                                         const struct sk_buff *skb)
1566 {
1567         swqe->tcp_offset =
1568                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1569
1570         swqe->tcp_end = (u16)skb->len - 1;
1571 }
1572
1573 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1574                                         const struct sk_buff *skb)
1575 {
1576         swqe->tcp_offset =
1577                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1578
1579         swqe->tcp_end = (u16)skb->len - 1;
1580 }
1581
1582
1583 static void write_swqe2_TSO(struct sk_buff *skb,
1584                             struct ehea_swqe *swqe, u32 lkey)
1585 {
1586         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1587         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1588         int skb_data_size = skb->len - skb->data_len;
1589         int headersize;
1590
1591         /* Packet is TCP with TSO enabled */
1592         swqe->tx_control |= EHEA_SWQE_TSO;
1593         swqe->mss = skb_shinfo(skb)->gso_size;
1594         /* copy only eth/ip/tcp headers to immediate data and
1595          * the rest of skb->data to sg1entry
1596          */
1597         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1598
1599         skb_data_size = skb->len - skb->data_len;
1600
1601         if (skb_data_size >= headersize) {
1602                 /* copy immediate data */
1603                 skb_copy_from_linear_data(skb, imm_data, headersize);
1604                 swqe->immediate_data_length = headersize;
1605
1606                 if (skb_data_size > headersize) {
1607                         /* set sg1entry data */
1608                         sg1entry->l_key = lkey;
1609                         sg1entry->len = skb_data_size - headersize;
1610                         sg1entry->vaddr =
1611                                 ehea_map_vaddr(skb->data + headersize);
1612                         swqe->descriptors++;
1613                 }
1614         } else
1615                 ehea_error("cannot handle fragmented headers");
1616 }
1617
1618 static void write_swqe2_nonTSO(struct sk_buff *skb,
1619                                struct ehea_swqe *swqe, u32 lkey)
1620 {
1621         int skb_data_size = skb->len - skb->data_len;
1622         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1623         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1624
1625         /* Packet is any nonTSO type
1626          *
1627          * Copy as much as possible skb->data to immediate data and
1628          * the rest to sg1entry
1629          */
1630         if (skb_data_size >= SWQE2_MAX_IMM) {
1631                 /* copy immediate data */
1632                 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1633
1634                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1635
1636                 if (skb_data_size > SWQE2_MAX_IMM) {
1637                         /* copy sg1entry data */
1638                         sg1entry->l_key = lkey;
1639                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1640                         sg1entry->vaddr =
1641                                 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1642                         swqe->descriptors++;
1643                 }
1644         } else {
1645                 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1646                 swqe->immediate_data_length = skb_data_size;
1647         }
1648 }
1649
1650 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1651                                     struct ehea_swqe *swqe, u32 lkey)
1652 {
1653         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1654         skb_frag_t *frag;
1655         int nfrags, sg1entry_contains_frag_data, i;
1656
1657         nfrags = skb_shinfo(skb)->nr_frags;
1658         sg1entry = &swqe->u.immdata_desc.sg_entry;
1659         sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1660         swqe->descriptors = 0;
1661         sg1entry_contains_frag_data = 0;
1662
1663         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1664                 write_swqe2_TSO(skb, swqe, lkey);
1665         else
1666                 write_swqe2_nonTSO(skb, swqe, lkey);
1667
1668         /* write descriptors */
1669         if (nfrags > 0) {
1670                 if (swqe->descriptors == 0) {
1671                         /* sg1entry not yet used */
1672                         frag = &skb_shinfo(skb)->frags[0];
1673
1674                         /* copy sg1entry data */
1675                         sg1entry->l_key = lkey;
1676                         sg1entry->len = frag->size;
1677                         sg1entry->vaddr =
1678                                 ehea_map_vaddr(page_address(frag->page)
1679                                                + frag->page_offset);
1680                         swqe->descriptors++;
1681                         sg1entry_contains_frag_data = 1;
1682                 }
1683
1684                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1685
1686                         frag = &skb_shinfo(skb)->frags[i];
1687                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1688
1689                         sgentry->l_key = lkey;
1690                         sgentry->len = frag->size;
1691                         sgentry->vaddr =
1692                                 ehea_map_vaddr(page_address(frag->page)
1693                                                + frag->page_offset);
1694                         swqe->descriptors++;
1695                 }
1696         }
1697 }
1698
1699 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1700 {
1701         int ret = 0;
1702         u64 hret;
1703         u8 reg_type;
1704
1705         /* De/Register untagged packets */
1706         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1707         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1708                                      port->logical_port_id,
1709                                      reg_type, port->mac_addr, 0, hcallid);
1710         if (hret != H_SUCCESS) {
1711                 ehea_error("%sregistering bc address failed (tagged)",
1712                            hcallid == H_REG_BCMC ? "" : "de");
1713                 ret = -EIO;
1714                 goto out_herr;
1715         }
1716
1717         /* De/Register VLAN packets */
1718         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1719         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1720                                      port->logical_port_id,
1721                                      reg_type, port->mac_addr, 0, hcallid);
1722         if (hret != H_SUCCESS) {
1723                 ehea_error("%sregistering bc address failed (vlan)",
1724                            hcallid == H_REG_BCMC ? "" : "de");
1725                 ret = -EIO;
1726         }
1727 out_herr:
1728         return ret;
1729 }
1730
1731 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1732 {
1733         struct ehea_port *port = netdev_priv(dev);
1734         struct sockaddr *mac_addr = sa;
1735         struct hcp_ehea_port_cb0 *cb0;
1736         int ret;
1737         u64 hret;
1738
1739         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1740                 ret = -EADDRNOTAVAIL;
1741                 goto out;
1742         }
1743
1744         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1745         if (!cb0) {
1746                 ehea_error("no mem for cb0");
1747                 ret = -ENOMEM;
1748                 goto out;
1749         }
1750
1751         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1752
1753         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1754
1755         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1756                                        port->logical_port_id, H_PORT_CB0,
1757                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1758         if (hret != H_SUCCESS) {
1759                 ret = -EIO;
1760                 goto out_free;
1761         }
1762
1763         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1764
1765         spin_lock(&ehea_bcmc_regs.lock);
1766
1767         /* Deregister old MAC in pHYP */
1768         if (port->state == EHEA_PORT_UP) {
1769                 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1770                 if (ret)
1771                         goto out_upregs;
1772         }
1773
1774         port->mac_addr = cb0->port_mac_addr << 16;
1775
1776         /* Register new MAC in pHYP */
1777         if (port->state == EHEA_PORT_UP) {
1778                 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1779                 if (ret)
1780                         goto out_upregs;
1781         }
1782
1783         ret = 0;
1784
1785 out_upregs:
1786         ehea_update_bcmc_registrations();
1787         spin_unlock(&ehea_bcmc_regs.lock);
1788 out_free:
1789         free_page((unsigned long)cb0);
1790 out:
1791         return ret;
1792 }
1793
1794 static void ehea_promiscuous_error(u64 hret, int enable)
1795 {
1796         if (hret == H_AUTHORITY)
1797                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1798                           enable == 1 ? "en" : "dis");
1799         else
1800                 ehea_error("failed %sabling promiscuous mode",
1801                            enable == 1 ? "en" : "dis");
1802 }
1803
1804 static void ehea_promiscuous(struct net_device *dev, int enable)
1805 {
1806         struct ehea_port *port = netdev_priv(dev);
1807         struct hcp_ehea_port_cb7 *cb7;
1808         u64 hret;
1809
1810         if ((enable && port->promisc) || (!enable && !port->promisc))
1811                 return;
1812
1813         cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1814         if (!cb7) {
1815                 ehea_error("no mem for cb7");
1816                 goto out;
1817         }
1818
1819         /* Modify Pxs_DUCQPN in CB7 */
1820         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1821
1822         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1823                                        port->logical_port_id,
1824                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1825         if (hret) {
1826                 ehea_promiscuous_error(hret, enable);
1827                 goto out;
1828         }
1829
1830         port->promisc = enable;
1831 out:
1832         free_page((unsigned long)cb7);
1833         return;
1834 }
1835
1836 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1837                                      u32 hcallid)
1838 {
1839         u64 hret;
1840         u8 reg_type;
1841
1842         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1843                  | EHEA_BCMC_UNTAGGED;
1844
1845         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1846                                      port->logical_port_id,
1847                                      reg_type, mc_mac_addr, 0, hcallid);
1848         if (hret)
1849                 goto out;
1850
1851         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1852                  | EHEA_BCMC_VLANID_ALL;
1853
1854         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1855                                      port->logical_port_id,
1856                                      reg_type, mc_mac_addr, 0, hcallid);
1857 out:
1858         return hret;
1859 }
1860
1861 static int ehea_drop_multicast_list(struct net_device *dev)
1862 {
1863         struct ehea_port *port = netdev_priv(dev);
1864         struct ehea_mc_list *mc_entry = port->mc_list;
1865         struct list_head *pos;
1866         struct list_head *temp;
1867         int ret = 0;
1868         u64 hret;
1869
1870         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1871                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1872
1873                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1874                                                  H_DEREG_BCMC);
1875                 if (hret) {
1876                         ehea_error("failed deregistering mcast MAC");
1877                         ret = -EIO;
1878                 }
1879
1880                 list_del(pos);
1881                 kfree(mc_entry);
1882         }
1883         return ret;
1884 }
1885
1886 static void ehea_allmulti(struct net_device *dev, int enable)
1887 {
1888         struct ehea_port *port = netdev_priv(dev);
1889         u64 hret;
1890
1891         if (!port->allmulti) {
1892                 if (enable) {
1893                         /* Enable ALLMULTI */
1894                         ehea_drop_multicast_list(dev);
1895                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1896                         if (!hret)
1897                                 port->allmulti = 1;
1898                         else
1899                                 ehea_error("failed enabling IFF_ALLMULTI");
1900                 }
1901         } else
1902                 if (!enable) {
1903                         /* Disable ALLMULTI */
1904                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1905                         if (!hret)
1906                                 port->allmulti = 0;
1907                         else
1908                                 ehea_error("failed disabling IFF_ALLMULTI");
1909                 }
1910 }
1911
1912 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1913 {
1914         struct ehea_mc_list *ehea_mcl_entry;
1915         u64 hret;
1916
1917         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1918         if (!ehea_mcl_entry) {
1919                 ehea_error("no mem for mcl_entry");
1920                 return;
1921         }
1922
1923         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1924
1925         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1926
1927         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1928                                          H_REG_BCMC);
1929         if (!hret)
1930                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1931         else {
1932                 ehea_error("failed registering mcast MAC");
1933                 kfree(ehea_mcl_entry);
1934         }
1935 }
1936
1937 static void ehea_set_multicast_list(struct net_device *dev)
1938 {
1939         struct ehea_port *port = netdev_priv(dev);
1940         struct dev_mc_list *k_mcl_entry;
1941         int ret, i;
1942
1943         if (dev->flags & IFF_PROMISC) {
1944                 ehea_promiscuous(dev, 1);
1945                 return;
1946         }
1947         ehea_promiscuous(dev, 0);
1948
1949         spin_lock(&ehea_bcmc_regs.lock);
1950
1951         if (dev->flags & IFF_ALLMULTI) {
1952                 ehea_allmulti(dev, 1);
1953                 goto out;
1954         }
1955         ehea_allmulti(dev, 0);
1956
1957         if (dev->mc_count) {
1958                 ret = ehea_drop_multicast_list(dev);
1959                 if (ret) {
1960                         /* Dropping the current multicast list failed.
1961                          * Enabling ALL_MULTI is the best we can do.
1962                          */
1963                         ehea_allmulti(dev, 1);
1964                 }
1965
1966                 if (dev->mc_count > port->adapter->max_mc_mac) {
1967                         ehea_info("Mcast registration limit reached (0x%llx). "
1968                                   "Use ALLMULTI!",
1969                                   port->adapter->max_mc_mac);
1970                         goto out;
1971                 }
1972
1973                 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1974                              k_mcl_entry = k_mcl_entry->next)
1975                         ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1976
1977         }
1978 out:
1979         ehea_update_bcmc_registrations();
1980         spin_unlock(&ehea_bcmc_regs.lock);
1981         return;
1982 }
1983
1984 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1985 {
1986         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1987                 return -EINVAL;
1988         dev->mtu = new_mtu;
1989         return 0;
1990 }
1991
1992 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1993                        struct ehea_swqe *swqe, u32 lkey)
1994 {
1995         if (skb->protocol == htons(ETH_P_IP)) {
1996                 const struct iphdr *iph = ip_hdr(skb);
1997
1998                 /* IPv4 */
1999                 swqe->tx_control |= EHEA_SWQE_CRC
2000                                  | EHEA_SWQE_IP_CHECKSUM
2001                                  | EHEA_SWQE_TCP_CHECKSUM
2002                                  | EHEA_SWQE_IMM_DATA_PRESENT
2003                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2004
2005                 write_ip_start_end(swqe, skb);
2006
2007                 if (iph->protocol == IPPROTO_UDP) {
2008                         if ((iph->frag_off & IP_MF)
2009                             || (iph->frag_off & IP_OFFSET))
2010                                 /* IP fragment, so don't change cs */
2011                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2012                         else
2013                                 write_udp_offset_end(swqe, skb);
2014                 } else if (iph->protocol == IPPROTO_TCP) {
2015                         write_tcp_offset_end(swqe, skb);
2016                 }
2017
2018                 /* icmp (big data) and ip segmentation packets (all other ip
2019                    packets) do not require any special handling */
2020
2021         } else {
2022                 /* Other Ethernet Protocol */
2023                 swqe->tx_control |= EHEA_SWQE_CRC
2024                                  | EHEA_SWQE_IMM_DATA_PRESENT
2025                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2026         }
2027
2028         write_swqe2_data(skb, dev, swqe, lkey);
2029 }
2030
2031 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2032                        struct ehea_swqe *swqe)
2033 {
2034         int nfrags = skb_shinfo(skb)->nr_frags;
2035         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2036         skb_frag_t *frag;
2037         int i;
2038
2039         if (skb->protocol == htons(ETH_P_IP)) {
2040                 const struct iphdr *iph = ip_hdr(skb);
2041
2042                 /* IPv4 */
2043                 write_ip_start_end(swqe, skb);
2044
2045                 if (iph->protocol == IPPROTO_TCP) {
2046                         swqe->tx_control |= EHEA_SWQE_CRC
2047                                          | EHEA_SWQE_IP_CHECKSUM
2048                                          | EHEA_SWQE_TCP_CHECKSUM
2049                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2050
2051                         write_tcp_offset_end(swqe, skb);
2052
2053                 } else if (iph->protocol == IPPROTO_UDP) {
2054                         if ((iph->frag_off & IP_MF)
2055                             || (iph->frag_off & IP_OFFSET))
2056                                 /* IP fragment, so don't change cs */
2057                                 swqe->tx_control |= EHEA_SWQE_CRC
2058                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2059                         else {
2060                                 swqe->tx_control |= EHEA_SWQE_CRC
2061                                                  | EHEA_SWQE_IP_CHECKSUM
2062                                                  | EHEA_SWQE_TCP_CHECKSUM
2063                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2064
2065                                 write_udp_offset_end(swqe, skb);
2066                         }
2067                 } else {
2068                         /* icmp (big data) and
2069                            ip segmentation packets (all other ip packets) */
2070                         swqe->tx_control |= EHEA_SWQE_CRC
2071                                          | EHEA_SWQE_IP_CHECKSUM
2072                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2073                 }
2074         } else {
2075                 /* Other Ethernet Protocol */
2076                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2077         }
2078         /* copy (immediate) data */
2079         if (nfrags == 0) {
2080                 /* data is in a single piece */
2081                 skb_copy_from_linear_data(skb, imm_data, skb->len);
2082         } else {
2083                 /* first copy data from the skb->data buffer ... */
2084                 skb_copy_from_linear_data(skb, imm_data,
2085                                           skb->len - skb->data_len);
2086                 imm_data += skb->len - skb->data_len;
2087
2088                 /* ... then copy data from the fragments */
2089                 for (i = 0; i < nfrags; i++) {
2090                         frag = &skb_shinfo(skb)->frags[i];
2091                         memcpy(imm_data,
2092                                page_address(frag->page) + frag->page_offset,
2093                                frag->size);
2094                         imm_data += frag->size;
2095                 }
2096         }
2097         swqe->immediate_data_length = skb->len;
2098         dev_kfree_skb(skb);
2099 }
2100
2101 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2102 {
2103         struct tcphdr *tcp;
2104         u32 tmp;
2105
2106         if ((skb->protocol == htons(ETH_P_IP)) &&
2107             (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2108                 tcp = (struct tcphdr *)(skb_network_header(skb) +
2109                                         (ip_hdr(skb)->ihl * 4));
2110                 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2111                 tmp += ip_hdr(skb)->daddr % 31;
2112                 return tmp % num_qps;
2113         } else
2114                 return 0;
2115 }
2116
2117 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2118 {
2119         struct ehea_port *port = netdev_priv(dev);
2120         struct ehea_swqe *swqe;
2121         unsigned long flags;
2122         u32 lkey;
2123         int swqe_index;
2124         struct ehea_port_res *pr;
2125
2126         pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2127
2128         if (!spin_trylock(&pr->xmit_lock))
2129                 return NETDEV_TX_BUSY;
2130
2131         if (pr->queue_stopped) {
2132                 spin_unlock(&pr->xmit_lock);
2133                 return NETDEV_TX_BUSY;
2134         }
2135
2136         swqe = ehea_get_swqe(pr->qp, &swqe_index);
2137         memset(swqe, 0, SWQE_HEADER_SIZE);
2138         atomic_dec(&pr->swqe_avail);
2139
2140         if (skb->len <= SWQE3_MAX_IMM) {
2141                 u32 sig_iv = port->sig_comp_iv;
2142                 u32 swqe_num = pr->swqe_id_counter;
2143                 ehea_xmit3(skb, dev, swqe);
2144                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2145                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2146                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2147                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2148                                                       sig_iv);
2149                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2150                         pr->swqe_ll_count = 0;
2151                 } else
2152                         pr->swqe_ll_count += 1;
2153         } else {
2154                 swqe->wr_id =
2155                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2156                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2157                       | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2158                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2159                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2160
2161                 pr->sq_skba.index++;
2162                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2163
2164                 lkey = pr->send_mr.lkey;
2165                 ehea_xmit2(skb, dev, swqe, lkey);
2166                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2167         }
2168         pr->swqe_id_counter += 1;
2169
2170         if (port->vgrp && vlan_tx_tag_present(skb)) {
2171                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2172                 swqe->vlan_tag = vlan_tx_tag_get(skb);
2173         }
2174
2175         if (netif_msg_tx_queued(port)) {
2176                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2177                 ehea_dump(swqe, 512, "swqe");
2178         }
2179
2180         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2181                 netif_stop_queue(dev);
2182                 swqe->tx_control |= EHEA_SWQE_PURGE;
2183         }
2184
2185         ehea_post_swqe(pr->qp, swqe);
2186         pr->tx_packets++;
2187
2188         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2189                 spin_lock_irqsave(&pr->netif_queue, flags);
2190                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2191                         pr->p_stats.queue_stopped++;
2192                         netif_stop_queue(dev);
2193                         pr->queue_stopped = 1;
2194                 }
2195                 spin_unlock_irqrestore(&pr->netif_queue, flags);
2196         }
2197         dev->trans_start = jiffies;
2198         spin_unlock(&pr->xmit_lock);
2199
2200         return NETDEV_TX_OK;
2201 }
2202
2203 static void ehea_vlan_rx_register(struct net_device *dev,
2204                                   struct vlan_group *grp)
2205 {
2206         struct ehea_port *port = netdev_priv(dev);
2207         struct ehea_adapter *adapter = port->adapter;
2208         struct hcp_ehea_port_cb1 *cb1;
2209         u64 hret;
2210
2211         port->vgrp = grp;
2212
2213         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2214         if (!cb1) {
2215                 ehea_error("no mem for cb1");
2216                 goto out;
2217         }
2218
2219         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2220                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2221         if (hret != H_SUCCESS)
2222                 ehea_error("modify_ehea_port failed");
2223
2224         free_page((unsigned long)cb1);
2225 out:
2226         return;
2227 }
2228
2229 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2230 {
2231         struct ehea_port *port = netdev_priv(dev);
2232         struct ehea_adapter *adapter = port->adapter;
2233         struct hcp_ehea_port_cb1 *cb1;
2234         int index;
2235         u64 hret;
2236
2237         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2238         if (!cb1) {
2239                 ehea_error("no mem for cb1");
2240                 goto out;
2241         }
2242
2243         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2244                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2245         if (hret != H_SUCCESS) {
2246                 ehea_error("query_ehea_port failed");
2247                 goto out;
2248         }
2249
2250         index = (vid / 64);
2251         cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2252
2253         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2254                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2255         if (hret != H_SUCCESS)
2256                 ehea_error("modify_ehea_port failed");
2257 out:
2258         free_page((unsigned long)cb1);
2259         return;
2260 }
2261
2262 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2263 {
2264         struct ehea_port *port = netdev_priv(dev);
2265         struct ehea_adapter *adapter = port->adapter;
2266         struct hcp_ehea_port_cb1 *cb1;
2267         int index;
2268         u64 hret;
2269
2270         vlan_group_set_device(port->vgrp, vid, NULL);
2271
2272         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2273         if (!cb1) {
2274                 ehea_error("no mem for cb1");
2275                 goto out;
2276         }
2277
2278         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2279                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2280         if (hret != H_SUCCESS) {
2281                 ehea_error("query_ehea_port failed");
2282                 goto out;
2283         }
2284
2285         index = (vid / 64);
2286         cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2287
2288         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2289                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2290         if (hret != H_SUCCESS)
2291                 ehea_error("modify_ehea_port failed");
2292 out:
2293         free_page((unsigned long)cb1);
2294         return;
2295 }
2296
2297 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2298 {
2299         int ret = -EIO;
2300         u64 hret;
2301         u16 dummy16 = 0;
2302         u64 dummy64 = 0;
2303         struct hcp_modify_qp_cb0 *cb0;
2304
2305         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2306         if (!cb0) {
2307                 ret = -ENOMEM;
2308                 goto out;
2309         }
2310
2311         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2312                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2313         if (hret != H_SUCCESS) {
2314                 ehea_error("query_ehea_qp failed (1)");
2315                 goto out;
2316         }
2317
2318         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2319         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2320                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2321                                      &dummy64, &dummy64, &dummy16, &dummy16);
2322         if (hret != H_SUCCESS) {
2323                 ehea_error("modify_ehea_qp failed (1)");
2324                 goto out;
2325         }
2326
2327         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2328                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2329         if (hret != H_SUCCESS) {
2330                 ehea_error("query_ehea_qp failed (2)");
2331                 goto out;
2332         }
2333
2334         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2335         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2336                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2337                                      &dummy64, &dummy64, &dummy16, &dummy16);
2338         if (hret != H_SUCCESS) {
2339                 ehea_error("modify_ehea_qp failed (2)");
2340                 goto out;
2341         }
2342
2343         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2344                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2345         if (hret != H_SUCCESS) {
2346                 ehea_error("query_ehea_qp failed (3)");
2347                 goto out;
2348         }
2349
2350         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2351         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2352                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2353                                      &dummy64, &dummy64, &dummy16, &dummy16);
2354         if (hret != H_SUCCESS) {
2355                 ehea_error("modify_ehea_qp failed (3)");
2356                 goto out;
2357         }
2358
2359         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2360                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2361         if (hret != H_SUCCESS) {
2362                 ehea_error("query_ehea_qp failed (4)");
2363                 goto out;
2364         }
2365
2366         ret = 0;
2367 out:
2368         free_page((unsigned long)cb0);
2369         return ret;
2370 }
2371
2372 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2373                                int add_tx_qps)
2374 {
2375         int ret, i;
2376         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2377         enum ehea_eq_type eq_type = EHEA_EQ;
2378
2379         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2380                                    EHEA_MAX_ENTRIES_EQ, 1);
2381         if (!port->qp_eq) {
2382                 ret = -EINVAL;
2383                 ehea_error("ehea_create_eq failed (qp_eq)");
2384                 goto out_kill_eq;
2385         }
2386
2387         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2388         pr_cfg.max_entries_scq = sq_entries * 2;
2389         pr_cfg.max_entries_sq = sq_entries;
2390         pr_cfg.max_entries_rq1 = rq1_entries;
2391         pr_cfg.max_entries_rq2 = rq2_entries;
2392         pr_cfg.max_entries_rq3 = rq3_entries;
2393
2394         pr_cfg_small_rx.max_entries_rcq = 1;
2395         pr_cfg_small_rx.max_entries_scq = sq_entries;
2396         pr_cfg_small_rx.max_entries_sq = sq_entries;
2397         pr_cfg_small_rx.max_entries_rq1 = 1;
2398         pr_cfg_small_rx.max_entries_rq2 = 1;
2399         pr_cfg_small_rx.max_entries_rq3 = 1;
2400
2401         for (i = 0; i < def_qps; i++) {
2402                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2403                 if (ret)
2404                         goto out_clean_pr;
2405         }
2406         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2407                 ret = ehea_init_port_res(port, &port->port_res[i],
2408                                          &pr_cfg_small_rx, i);
2409                 if (ret)
2410                         goto out_clean_pr;
2411         }
2412
2413         return 0;
2414
2415 out_clean_pr:
2416         while (--i >= 0)
2417                 ehea_clean_portres(port, &port->port_res[i]);
2418
2419 out_kill_eq:
2420         ehea_destroy_eq(port->qp_eq);
2421         return ret;
2422 }
2423
2424 static int ehea_clean_all_portres(struct ehea_port *port)
2425 {
2426         int ret = 0;
2427         int i;
2428
2429         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2430                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2431
2432         ret |= ehea_destroy_eq(port->qp_eq);
2433
2434         return ret;
2435 }
2436
2437 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2438 {
2439         if (adapter->active_ports)
2440                 return;
2441
2442         ehea_rem_mr(&adapter->mr);
2443 }
2444
2445 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2446 {
2447         if (adapter->active_ports)
2448                 return 0;
2449
2450         return ehea_reg_kernel_mr(adapter, &adapter->mr);
2451 }
2452
2453 static int ehea_up(struct net_device *dev)
2454 {
2455         int ret, i;
2456         struct ehea_port *port = netdev_priv(dev);
2457
2458         if (port->state == EHEA_PORT_UP)
2459                 return 0;
2460
2461         mutex_lock(&ehea_fw_handles.lock);
2462
2463         ret = ehea_port_res_setup(port, port->num_def_qps,
2464                                   port->num_add_tx_qps);
2465         if (ret) {
2466                 ehea_error("port_res_failed");
2467                 goto out;
2468         }
2469
2470         /* Set default QP for this port */
2471         ret = ehea_configure_port(port);
2472         if (ret) {
2473                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2474                 goto out_clean_pr;
2475         }
2476
2477         ret = ehea_reg_interrupts(dev);
2478         if (ret) {
2479                 ehea_error("reg_interrupts failed. ret:%d", ret);
2480                 goto out_clean_pr;
2481         }
2482
2483         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2484                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2485                 if (ret) {
2486                         ehea_error("activate_qp failed");
2487                         goto out_free_irqs;
2488                 }
2489         }
2490
2491         for (i = 0; i < port->num_def_qps; i++) {
2492                 ret = ehea_fill_port_res(&port->port_res[i]);
2493                 if (ret) {
2494                         ehea_error("out_free_irqs");
2495                         goto out_free_irqs;
2496                 }
2497         }
2498
2499         spin_lock(&ehea_bcmc_regs.lock);
2500
2501         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2502         if (ret) {
2503                 ret = -EIO;
2504                 goto out_free_irqs;
2505         }
2506
2507         port->state = EHEA_PORT_UP;
2508
2509         ret = 0;
2510         goto out;
2511
2512 out_free_irqs:
2513         ehea_free_interrupts(dev);
2514
2515 out_clean_pr:
2516         ehea_clean_all_portres(port);
2517 out:
2518         if (ret)
2519                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2520
2521         ehea_update_bcmc_registrations();
2522         spin_unlock(&ehea_bcmc_regs.lock);
2523
2524         ehea_update_firmware_handles();
2525         mutex_unlock(&ehea_fw_handles.lock);
2526
2527         return ret;
2528 }
2529
2530 static void port_napi_disable(struct ehea_port *port)
2531 {
2532         int i;
2533
2534         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2535                 napi_disable(&port->port_res[i].napi);
2536 }
2537
2538 static void port_napi_enable(struct ehea_port *port)
2539 {
2540         int i;
2541
2542         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2543                 napi_enable(&port->port_res[i].napi);
2544 }
2545
2546 static int ehea_open(struct net_device *dev)
2547 {
2548         int ret;
2549         struct ehea_port *port = netdev_priv(dev);
2550
2551         mutex_lock(&port->port_lock);
2552
2553         if (netif_msg_ifup(port))
2554                 ehea_info("enabling port %s", dev->name);
2555
2556         ret = ehea_up(dev);
2557         if (!ret) {
2558                 port_napi_enable(port);
2559                 netif_start_queue(dev);
2560         }
2561
2562         mutex_unlock(&port->port_lock);
2563
2564         return ret;
2565 }
2566
2567 static int ehea_down(struct net_device *dev)
2568 {
2569         int ret;
2570         struct ehea_port *port = netdev_priv(dev);
2571
2572         if (port->state == EHEA_PORT_DOWN)
2573                 return 0;
2574
2575         mutex_lock(&ehea_fw_handles.lock);
2576
2577         spin_lock(&ehea_bcmc_regs.lock);
2578         ehea_drop_multicast_list(dev);
2579         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2580
2581         ehea_free_interrupts(dev);
2582
2583         port->state = EHEA_PORT_DOWN;
2584
2585         ehea_update_bcmc_registrations();
2586         spin_unlock(&ehea_bcmc_regs.lock);
2587
2588         ret = ehea_clean_all_portres(port);
2589         if (ret)
2590                 ehea_info("Failed freeing resources for %s. ret=%i",
2591                           dev->name, ret);
2592
2593         ehea_update_firmware_handles();
2594         mutex_unlock(&ehea_fw_handles.lock);
2595
2596         return ret;
2597 }
2598
2599 static int ehea_stop(struct net_device *dev)
2600 {
2601         int ret;
2602         struct ehea_port *port = netdev_priv(dev);
2603
2604         if (netif_msg_ifdown(port))
2605                 ehea_info("disabling port %s", dev->name);
2606
2607         set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2608         cancel_work_sync(&port->reset_task);
2609         mutex_lock(&port->port_lock);
2610         netif_stop_queue(dev);
2611         port_napi_disable(port);
2612         ret = ehea_down(dev);
2613         mutex_unlock(&port->port_lock);
2614         clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2615         return ret;
2616 }
2617
2618 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2619 {
2620         struct ehea_qp qp = *orig_qp;
2621         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2622         struct ehea_swqe *swqe;
2623         int wqe_index;
2624         int i;
2625
2626         for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2627                 swqe = ehea_get_swqe(&qp, &wqe_index);
2628                 swqe->tx_control |= EHEA_SWQE_PURGE;
2629         }
2630 }
2631
2632 static void ehea_flush_sq(struct ehea_port *port)
2633 {
2634         int i;
2635
2636         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2637                 struct ehea_port_res *pr = &port->port_res[i];
2638                 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2639                 int k = 0;
2640                 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2641                         msleep(5);
2642                         if (++k == 20)
2643                                 break;
2644                 }
2645         }
2646 }
2647
2648 int ehea_stop_qps(struct net_device *dev)
2649 {
2650         struct ehea_port *port = netdev_priv(dev);
2651         struct ehea_adapter *adapter = port->adapter;
2652         struct hcp_modify_qp_cb0 *cb0;
2653         int ret = -EIO;
2654         int dret;
2655         int i;
2656         u64 hret;
2657         u64 dummy64 = 0;
2658         u16 dummy16 = 0;
2659
2660         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2661         if (!cb0) {
2662                 ret = -ENOMEM;
2663                 goto out;
2664         }
2665
2666         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2667                 struct ehea_port_res *pr =  &port->port_res[i];
2668                 struct ehea_qp *qp = pr->qp;
2669
2670                 /* Purge send queue */
2671                 ehea_purge_sq(qp);
2672
2673                 /* Disable queue pair */
2674                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2675                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2676                                             cb0);
2677                 if (hret != H_SUCCESS) {
2678                         ehea_error("query_ehea_qp failed (1)");
2679                         goto out;
2680                 }
2681
2682                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2683                 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2684
2685                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2686                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2687                                                             1), cb0, &dummy64,
2688                                              &dummy64, &dummy16, &dummy16);
2689                 if (hret != H_SUCCESS) {
2690                         ehea_error("modify_ehea_qp failed (1)");
2691                         goto out;
2692                 }
2693
2694                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2695                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2696                                             cb0);
2697                 if (hret != H_SUCCESS) {
2698                         ehea_error("query_ehea_qp failed (2)");
2699                         goto out;
2700                 }
2701
2702                 /* deregister shared memory regions */
2703                 dret = ehea_rem_smrs(pr);
2704                 if (dret) {
2705                         ehea_error("unreg shared memory region failed");
2706                         goto out;
2707                 }
2708         }
2709
2710         ret = 0;
2711 out:
2712         free_page((unsigned long)cb0);
2713
2714         return ret;
2715 }
2716
2717 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2718 {
2719         struct ehea_qp qp = *orig_qp;
2720         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2721         struct ehea_rwqe *rwqe;
2722         struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2723         struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2724         struct sk_buff *skb;
2725         u32 lkey = pr->recv_mr.lkey;
2726
2727
2728         int i;
2729         int index;
2730
2731         for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2732                 rwqe = ehea_get_next_rwqe(&qp, 2);
2733                 rwqe->sg_list[0].l_key = lkey;
2734                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2735                 skb = skba_rq2[index];
2736                 if (skb)
2737                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2738         }
2739
2740         for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2741                 rwqe = ehea_get_next_rwqe(&qp, 3);
2742                 rwqe->sg_list[0].l_key = lkey;
2743                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2744                 skb = skba_rq3[index];
2745                 if (skb)
2746                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2747         }
2748 }
2749
2750 int ehea_restart_qps(struct net_device *dev)
2751 {
2752         struct ehea_port *port = netdev_priv(dev);
2753         struct ehea_adapter *adapter = port->adapter;
2754         int ret = 0;
2755         int i;
2756
2757         struct hcp_modify_qp_cb0 *cb0;
2758         u64 hret;
2759         u64 dummy64 = 0;
2760         u16 dummy16 = 0;
2761
2762         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2763         if (!cb0) {
2764                 ret = -ENOMEM;
2765                 goto out;
2766         }
2767
2768         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2769                 struct ehea_port_res *pr =  &port->port_res[i];
2770                 struct ehea_qp *qp = pr->qp;
2771
2772                 ret = ehea_gen_smrs(pr);
2773                 if (ret) {
2774                         ehea_error("creation of shared memory regions failed");
2775                         goto out;
2776                 }
2777
2778                 ehea_update_rqs(qp, pr);
2779
2780                 /* Enable queue pair */
2781                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2782                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2783                                             cb0);
2784                 if (hret != H_SUCCESS) {
2785                         ehea_error("query_ehea_qp failed (1)");
2786                         goto out;
2787                 }
2788
2789                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2790                 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2791
2792                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2793                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2794                                                             1), cb0, &dummy64,
2795                                              &dummy64, &dummy16, &dummy16);
2796                 if (hret != H_SUCCESS) {
2797                         ehea_error("modify_ehea_qp failed (1)");
2798                         goto out;
2799                 }
2800
2801                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2802                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2803                                             cb0);
2804                 if (hret != H_SUCCESS) {
2805                         ehea_error("query_ehea_qp failed (2)");
2806                         goto out;
2807                 }
2808
2809                 /* refill entire queue */
2810                 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2811                 ehea_refill_rq2(pr, 0);
2812                 ehea_refill_rq3(pr, 0);
2813         }
2814 out:
2815         free_page((unsigned long)cb0);
2816
2817         return ret;
2818 }
2819
2820 static void ehea_reset_port(struct work_struct *work)
2821 {
2822         int ret;
2823         struct ehea_port *port =
2824                 container_of(work, struct ehea_port, reset_task);
2825         struct net_device *dev = port->netdev;
2826
2827         port->resets++;
2828         mutex_lock(&port->port_lock);
2829         netif_stop_queue(dev);
2830
2831         port_napi_disable(port);
2832
2833         ehea_down(dev);
2834
2835         ret = ehea_up(dev);
2836         if (ret)
2837                 goto out;
2838
2839         ehea_set_multicast_list(dev);
2840
2841         if (netif_msg_timer(port))
2842                 ehea_info("Device %s resetted successfully", dev->name);
2843
2844         port_napi_enable(port);
2845
2846         netif_wake_queue(dev);
2847 out:
2848         mutex_unlock(&port->port_lock);
2849         return;
2850 }
2851
2852 static void ehea_rereg_mrs(struct work_struct *work)
2853 {
2854         int ret, i;
2855         struct ehea_adapter *adapter;
2856
2857         mutex_lock(&dlpar_mem_lock);
2858         ehea_info("LPAR memory changed - re-initializing driver");
2859
2860         list_for_each_entry(adapter, &adapter_list, list)
2861                 if (adapter->active_ports) {
2862                         /* Shutdown all ports */
2863                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2864                                 struct ehea_port *port = adapter->port[i];
2865                                 struct net_device *dev;
2866
2867                                 if (!port)
2868                                         continue;
2869
2870                                 dev = port->netdev;
2871
2872                                 if (dev->flags & IFF_UP) {
2873                                         mutex_lock(&port->port_lock);
2874                                         netif_stop_queue(dev);
2875                                         ehea_flush_sq(port);
2876                                         ret = ehea_stop_qps(dev);
2877                                         if (ret) {
2878                                                 mutex_unlock(&port->port_lock);
2879                                                 goto out;
2880                                         }
2881                                         port_napi_disable(port);
2882                                         mutex_unlock(&port->port_lock);
2883                                 }
2884                         }
2885
2886                         /* Unregister old memory region */
2887                         ret = ehea_rem_mr(&adapter->mr);
2888                         if (ret) {
2889                                 ehea_error("unregister MR failed - driver"
2890                                            " inoperable!");
2891                                 goto out;
2892                         }
2893                 }
2894
2895         clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2896
2897         list_for_each_entry(adapter, &adapter_list, list)
2898                 if (adapter->active_ports) {
2899                         /* Register new memory region */
2900                         ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2901                         if (ret) {
2902                                 ehea_error("register MR failed - driver"
2903                                            " inoperable!");
2904                                 goto out;
2905                         }
2906
2907                         /* Restart all ports */
2908                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2909                                 struct ehea_port *port = adapter->port[i];
2910
2911                                 if (port) {
2912                                         struct net_device *dev = port->netdev;
2913
2914                                         if (dev->flags & IFF_UP) {
2915                                                 mutex_lock(&port->port_lock);
2916                                                 port_napi_enable(port);
2917                                                 ret = ehea_restart_qps(dev);
2918                                                 if (!ret)
2919                                                         netif_wake_queue(dev);
2920                                                 mutex_unlock(&port->port_lock);
2921                                         }
2922                                 }
2923                         }
2924                 }
2925         ehea_info("re-initializing driver complete");
2926 out:
2927         mutex_unlock(&dlpar_mem_lock);
2928         return;
2929 }
2930
2931 static void ehea_tx_watchdog(struct net_device *dev)
2932 {
2933         struct ehea_port *port = netdev_priv(dev);
2934
2935         if (netif_carrier_ok(dev) &&
2936             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2937                 ehea_schedule_port_reset(port);
2938 }
2939
2940 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2941 {
2942         struct hcp_query_ehea *cb;
2943         u64 hret;
2944         int ret;
2945
2946         cb = (void *)get_zeroed_page(GFP_KERNEL);
2947         if (!cb) {
2948                 ret = -ENOMEM;
2949                 goto out;
2950         }
2951
2952         hret = ehea_h_query_ehea(adapter->handle, cb);
2953
2954         if (hret != H_SUCCESS) {
2955                 ret = -EIO;
2956                 goto out_herr;
2957         }
2958
2959         adapter->max_mc_mac = cb->max_mc_mac - 1;
2960         ret = 0;
2961
2962 out_herr:
2963         free_page((unsigned long)cb);
2964 out:
2965         return ret;
2966 }
2967
2968 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2969 {
2970         struct hcp_ehea_port_cb4 *cb4;
2971         u64 hret;
2972         int ret = 0;
2973
2974         *jumbo = 0;
2975
2976         /* (Try to) enable *jumbo frames */
2977         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
2978         if (!cb4) {
2979                 ehea_error("no mem for cb4");
2980                 ret = -ENOMEM;
2981                 goto out;
2982         } else {
2983                 hret = ehea_h_query_ehea_port(port->adapter->handle,
2984                                               port->logical_port_id,
2985                                               H_PORT_CB4,
2986                                               H_PORT_CB4_JUMBO, cb4);
2987                 if (hret == H_SUCCESS) {
2988                         if (cb4->jumbo_frame)
2989                                 *jumbo = 1;
2990                         else {
2991                                 cb4->jumbo_frame = 1;
2992                                 hret = ehea_h_modify_ehea_port(port->adapter->
2993                                                                handle,
2994                                                                port->
2995                                                                logical_port_id,
2996                                                                H_PORT_CB4,
2997                                                                H_PORT_CB4_JUMBO,
2998                                                                cb4);
2999                                 if (hret == H_SUCCESS)
3000                                         *jumbo = 1;
3001                         }
3002                 } else
3003                         ret = -EINVAL;
3004
3005                 free_page((unsigned long)cb4);
3006         }
3007 out:
3008         return ret;
3009 }
3010
3011 static ssize_t ehea_show_port_id(struct device *dev,
3012                                  struct device_attribute *attr, char *buf)
3013 {
3014         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3015         return sprintf(buf, "%d", port->logical_port_id);
3016 }
3017
3018 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3019                    NULL);
3020
3021 static void __devinit logical_port_release(struct device *dev)
3022 {
3023         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3024         of_node_put(port->ofdev.node);
3025 }
3026
3027 static struct device *ehea_register_port(struct ehea_port *port,
3028                                          struct device_node *dn)
3029 {
3030         int ret;
3031
3032         port->ofdev.node = of_node_get(dn);
3033         port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3034         port->ofdev.dev.bus = &ibmebus_bus_type;
3035
3036         dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3037         port->ofdev.dev.release = logical_port_release;
3038
3039         ret = of_device_register(&port->ofdev);
3040         if (ret) {
3041                 ehea_error("failed to register device. ret=%d", ret);
3042                 goto out;
3043         }
3044
3045         ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3046         if (ret) {
3047                 ehea_error("failed to register attributes, ret=%d", ret);
3048                 goto out_unreg_of_dev;
3049         }
3050
3051         return &port->ofdev.dev;
3052
3053 out_unreg_of_dev:
3054         of_device_unregister(&port->ofdev);
3055 out:
3056         return NULL;
3057 }
3058
3059 static void ehea_unregister_port(struct ehea_port *port)
3060 {
3061         device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3062         of_device_unregister(&port->ofdev);
3063 }
3064
3065 static const struct net_device_ops ehea_netdev_ops = {
3066         .ndo_open               = ehea_open,
3067         .ndo_stop               = ehea_stop,
3068         .ndo_start_xmit         = ehea_start_xmit,
3069 #ifdef CONFIG_NET_POLL_CONTROLLER
3070         .ndo_poll_controller    = ehea_netpoll,
3071 #endif
3072         .ndo_get_stats          = ehea_get_stats,
3073         .ndo_set_mac_address    = ehea_set_mac_addr,
3074         .ndo_set_multicast_list = ehea_set_multicast_list,
3075         .ndo_change_mtu         = ehea_change_mtu,
3076         .ndo_vlan_rx_register   = ehea_vlan_rx_register,
3077         .ndo_vlan_rx_add_vid    = ehea_vlan_rx_add_vid,
3078         .ndo_vlan_rx_kill_vid   = ehea_vlan_rx_kill_vid
3079 };
3080
3081 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3082                                          u32 logical_port_id,
3083                                          struct device_node *dn)
3084 {
3085         int ret;
3086         struct net_device *dev;
3087         struct ehea_port *port;
3088         struct device *port_dev;
3089         int jumbo;
3090
3091         /* allocate memory for the port structures */
3092         dev = alloc_etherdev(sizeof(struct ehea_port));
3093
3094         if (!dev) {
3095                 ehea_error("no mem for net_device");
3096                 ret = -ENOMEM;
3097                 goto out_err;
3098         }
3099
3100         port = netdev_priv(dev);
3101
3102         mutex_init(&port->port_lock);
3103         port->state = EHEA_PORT_DOWN;
3104         port->sig_comp_iv = sq_entries / 10;
3105
3106         port->adapter = adapter;
3107         port->netdev = dev;
3108         port->logical_port_id = logical_port_id;
3109
3110         port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3111
3112         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3113         if (!port->mc_list) {
3114                 ret = -ENOMEM;
3115                 goto out_free_ethdev;
3116         }
3117
3118         INIT_LIST_HEAD(&port->mc_list->list);
3119
3120         ret = ehea_sense_port_attr(port);
3121         if (ret)
3122                 goto out_free_mc_list;
3123
3124         port_dev = ehea_register_port(port, dn);
3125         if (!port_dev)
3126                 goto out_free_mc_list;
3127
3128         SET_NETDEV_DEV(dev, port_dev);
3129
3130         /* initialize net_device structure */
3131         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3132
3133         dev->netdev_ops = &ehea_netdev_ops;
3134         ehea_set_ethtool_ops(dev);
3135
3136         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3137                       | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3138                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3139                       | NETIF_F_LLTX;
3140         dev->tx_timeout = &ehea_tx_watchdog;
3141         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3142
3143         INIT_WORK(&port->reset_task, ehea_reset_port);
3144
3145         ret = register_netdev(dev);
3146         if (ret) {
3147                 ehea_error("register_netdev failed. ret=%d", ret);
3148                 goto out_unreg_port;
3149         }
3150
3151         port->lro_max_aggr = lro_max_aggr;
3152
3153         ret = ehea_get_jumboframe_status(port, &jumbo);
3154         if (ret)
3155                 ehea_error("failed determining jumbo frame status for %s",
3156                            port->netdev->name);
3157
3158         ehea_info("%s: Jumbo frames are %sabled", dev->name,
3159                   jumbo == 1 ? "en" : "dis");
3160
3161         adapter->active_ports++;
3162
3163         return port;
3164
3165 out_unreg_port:
3166         ehea_unregister_port(port);
3167
3168 out_free_mc_list:
3169         kfree(port->mc_list);
3170
3171 out_free_ethdev:
3172         free_netdev(dev);
3173
3174 out_err:
3175         ehea_error("setting up logical port with id=%d failed, ret=%d",
3176                    logical_port_id, ret);
3177         return NULL;
3178 }
3179
3180 static void ehea_shutdown_single_port(struct ehea_port *port)
3181 {
3182         struct ehea_adapter *adapter = port->adapter;
3183         unregister_netdev(port->netdev);
3184         ehea_unregister_port(port);
3185         kfree(port->mc_list);
3186         free_netdev(port->netdev);
3187         adapter->active_ports--;
3188 }
3189
3190 static int ehea_setup_ports(struct ehea_adapter *adapter)
3191 {
3192         struct device_node *lhea_dn;
3193         struct device_node *eth_dn = NULL;
3194
3195         const u32 *dn_log_port_id;
3196         int i = 0;
3197
3198         lhea_dn = adapter->ofdev->node;
3199         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3200
3201                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3202                                                  NULL);
3203                 if (!dn_log_port_id) {
3204                         ehea_error("bad device node: eth_dn name=%s",
3205                                    eth_dn->full_name);
3206                         continue;
3207                 }
3208
3209                 if (ehea_add_adapter_mr(adapter)) {
3210                         ehea_error("creating MR failed");
3211                         of_node_put(eth_dn);
3212                         return -EIO;
3213                 }
3214
3215                 adapter->port[i] = ehea_setup_single_port(adapter,
3216                                                           *dn_log_port_id,
3217                                                           eth_dn);
3218                 if (adapter->port[i])
3219                         ehea_info("%s -> logical port id #%d",
3220                                   adapter->port[i]->netdev->name,
3221                                   *dn_log_port_id);
3222                 else
3223                         ehea_remove_adapter_mr(adapter);
3224
3225                 i++;
3226         };
3227         return 0;
3228 }
3229
3230 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3231                                            u32 logical_port_id)
3232 {
3233         struct device_node *lhea_dn;
3234         struct device_node *eth_dn = NULL;
3235         const u32 *dn_log_port_id;
3236
3237         lhea_dn = adapter->ofdev->node;
3238         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3239
3240                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3241                                                  NULL);
3242                 if (dn_log_port_id)
3243                         if (*dn_log_port_id == logical_port_id)
3244                                 return eth_dn;
3245         };
3246
3247         return NULL;
3248 }
3249
3250 static ssize_t ehea_probe_port(struct device *dev,
3251                                struct device_attribute *attr,
3252                                const char *buf, size_t count)
3253 {
3254         struct ehea_adapter *adapter = dev->driver_data;
3255         struct ehea_port *port;
3256         struct device_node *eth_dn = NULL;
3257         int i;
3258
3259         u32 logical_port_id;
3260
3261         sscanf(buf, "%d", &logical_port_id);
3262
3263         port = ehea_get_port(adapter, logical_port_id);
3264
3265         if (port) {
3266                 ehea_info("adding port with logical port id=%d failed. port "
3267                           "already configured as %s.", logical_port_id,
3268                           port->netdev->name);
3269                 return -EINVAL;
3270         }
3271
3272         eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3273
3274         if (!eth_dn) {
3275                 ehea_info("no logical port with id %d found", logical_port_id);
3276                 return -EINVAL;
3277         }
3278
3279         if (ehea_add_adapter_mr(adapter)) {
3280                 ehea_error("creating MR failed");
3281                 return -EIO;
3282         }
3283
3284         port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3285
3286         of_node_put(eth_dn);
3287
3288         if (port) {
3289                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3290                         if (!adapter->port[i]) {
3291                                 adapter->port[i] = port;
3292                                 break;
3293                         }
3294
3295                 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3296                           logical_port_id);
3297         } else {
3298                 ehea_remove_adapter_mr(adapter);
3299                 return -EIO;
3300         }
3301
3302         return (ssize_t) count;
3303 }
3304
3305 static ssize_t ehea_remove_port(struct device *dev,
3306                                 struct device_attribute *attr,
3307                                 const char *buf, size_t count)
3308 {
3309         struct ehea_adapter *adapter = dev->driver_data;
3310         struct ehea_port *port;
3311         int i;
3312         u32 logical_port_id;
3313
3314         sscanf(buf, "%d", &logical_port_id);
3315
3316         port = ehea_get_port(adapter, logical_port_id);
3317
3318         if (port) {
3319                 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3320                           logical_port_id);
3321
3322                 ehea_shutdown_single_port(port);
3323
3324                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3325                         if (adapter->port[i] == port) {
3326                                 adapter->port[i] = NULL;
3327                                 break;
3328                         }
3329         } else {
3330                 ehea_error("removing port with logical port id=%d failed. port "
3331                            "not configured.", logical_port_id);
3332                 return -EINVAL;
3333         }
3334
3335         ehea_remove_adapter_mr(adapter);
3336
3337         return (ssize_t) count;
3338 }
3339
3340 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3341 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3342
3343 int ehea_create_device_sysfs(struct of_device *dev)
3344 {
3345         int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3346         if (ret)
3347                 goto out;
3348
3349         ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3350 out:
3351         return ret;
3352 }
3353
3354 void ehea_remove_device_sysfs(struct of_device *dev)
3355 {
3356         device_remove_file(&dev->dev, &dev_attr_probe_port);
3357         device_remove_file(&dev->dev, &dev_attr_remove_port);
3358 }
3359
3360 static int __devinit ehea_probe_adapter(struct of_device *dev,
3361                                         const struct of_device_id *id)
3362 {
3363         struct ehea_adapter *adapter;
3364         const u64 *adapter_handle;
3365         int ret;
3366
3367         if (!dev || !dev->node) {
3368                 ehea_error("Invalid ibmebus device probed");
3369                 return -EINVAL;
3370         }
3371         mutex_lock(&ehea_fw_handles.lock);
3372
3373         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3374         if (!adapter) {
3375                 ret = -ENOMEM;
3376                 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3377                 goto out;
3378         }
3379
3380         list_add(&adapter->list, &adapter_list);
3381
3382         adapter->ofdev = dev;
3383
3384         adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
3385                                          NULL);
3386         if (adapter_handle)
3387                 adapter->handle = *adapter_handle;
3388
3389         if (!adapter->handle) {
3390                 dev_err(&dev->dev, "failed getting handle for adapter"
3391                         " '%s'\n", dev->node->full_name);
3392                 ret = -ENODEV;
3393                 goto out_free_ad;
3394         }
3395
3396         adapter->pd = EHEA_PD_ID;
3397
3398         dev->dev.driver_data = adapter;
3399
3400
3401         /* initialize adapter and ports */
3402         /* get adapter properties */
3403         ret = ehea_sense_adapter_attr(adapter);
3404         if (ret) {
3405                 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3406                 goto out_free_ad;
3407         }
3408
3409         adapter->neq = ehea_create_eq(adapter,
3410                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3411         if (!adapter->neq) {
3412                 ret = -EIO;
3413                 dev_err(&dev->dev, "NEQ creation failed\n");
3414                 goto out_free_ad;
3415         }
3416
3417         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3418                      (unsigned long)adapter);
3419
3420         ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3421                                   ehea_interrupt_neq, IRQF_DISABLED,
3422                                   "ehea_neq", adapter);
3423         if (ret) {
3424                 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3425                 goto out_kill_eq;
3426         }
3427
3428         ret = ehea_create_device_sysfs(dev);
3429         if (ret)
3430                 goto out_free_irq;
3431
3432         ret = ehea_setup_ports(adapter);
3433         if (ret) {
3434                 dev_err(&dev->dev, "setup_ports failed\n");
3435                 goto out_rem_dev_sysfs;
3436         }
3437
3438         ret = 0;
3439         goto out;
3440
3441 out_rem_dev_sysfs:
3442         ehea_remove_device_sysfs(dev);
3443
3444 out_free_irq:
3445         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3446
3447 out_kill_eq:
3448         ehea_destroy_eq(adapter->neq);
3449
3450 out_free_ad:
3451         list_del(&adapter->list);
3452         kfree(adapter);
3453
3454 out:
3455         ehea_update_firmware_handles();
3456         mutex_unlock(&ehea_fw_handles.lock);
3457         return ret;
3458 }
3459
3460 static int __devexit ehea_remove(struct of_device *dev)
3461 {
3462         struct ehea_adapter *adapter = dev->dev.driver_data;
3463         int i;
3464
3465         for (i = 0; i < EHEA_MAX_PORTS; i++)
3466                 if (adapter->port[i]) {
3467                         ehea_shutdown_single_port(adapter->port[i]);
3468                         adapter->port[i] = NULL;
3469                 }
3470
3471         ehea_remove_device_sysfs(dev);
3472
3473         flush_scheduled_work();
3474
3475         mutex_lock(&ehea_fw_handles.lock);
3476
3477         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3478         tasklet_kill(&adapter->neq_tasklet);
3479
3480         ehea_destroy_eq(adapter->neq);
3481         ehea_remove_adapter_mr(adapter);
3482         list_del(&adapter->list);
3483         kfree(adapter);
3484
3485         ehea_update_firmware_handles();
3486         mutex_unlock(&ehea_fw_handles.lock);
3487
3488         return 0;
3489 }
3490
3491 void ehea_crash_handler(void)
3492 {
3493         int i;
3494
3495         if (ehea_fw_handles.arr)
3496                 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3497                         ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3498                                              ehea_fw_handles.arr[i].fwh,
3499                                              FORCE_FREE);
3500
3501         if (ehea_bcmc_regs.arr)
3502                 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3503                         ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3504                                               ehea_bcmc_regs.arr[i].port_id,
3505                                               ehea_bcmc_regs.arr[i].reg_type,
3506                                               ehea_bcmc_regs.arr[i].macaddr,
3507                                               0, H_DEREG_BCMC);
3508 }
3509
3510 static int ehea_mem_notifier(struct notifier_block *nb,
3511                              unsigned long action, void *data)
3512 {
3513         struct memory_notify *arg = data;
3514         switch (action) {
3515         case MEM_CANCEL_OFFLINE:
3516                 ehea_info("memory offlining canceled");
3517                 /* Readd canceled memory block */
3518         case MEM_ONLINE:
3519                 ehea_info("memory is going online");
3520                 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3521                 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3522                         return NOTIFY_BAD;
3523                 ehea_rereg_mrs(NULL);
3524                 break;
3525         case MEM_GOING_OFFLINE:
3526                 ehea_info("memory is going offline");
3527                 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3528                 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3529                         return NOTIFY_BAD;
3530                 ehea_rereg_mrs(NULL);
3531                 break;
3532         default:
3533                 break;
3534         }
3535         return NOTIFY_OK;
3536 }
3537
3538 static struct notifier_block ehea_mem_nb = {
3539         .notifier_call = ehea_mem_notifier,
3540 };
3541
3542 static int ehea_reboot_notifier(struct notifier_block *nb,
3543                                 unsigned long action, void *unused)
3544 {
3545         if (action == SYS_RESTART) {
3546                 ehea_info("Reboot: freeing all eHEA resources");
3547                 ibmebus_unregister_driver(&ehea_driver);
3548         }
3549         return NOTIFY_DONE;
3550 }
3551
3552 static struct notifier_block ehea_reboot_nb = {
3553         .notifier_call = ehea_reboot_notifier,
3554 };
3555
3556 static int check_module_parm(void)
3557 {
3558         int ret = 0;
3559
3560         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3561             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3562                 ehea_info("Bad parameter: rq1_entries");
3563                 ret = -EINVAL;
3564         }
3565         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3566             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3567                 ehea_info("Bad parameter: rq2_entries");
3568                 ret = -EINVAL;
3569         }
3570         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3571             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3572                 ehea_info("Bad parameter: rq3_entries");
3573                 ret = -EINVAL;
3574         }
3575         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3576             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3577                 ehea_info("Bad parameter: sq_entries");
3578                 ret = -EINVAL;
3579         }
3580
3581         return ret;
3582 }
3583
3584 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3585                                       char *buf)
3586 {
3587         return sprintf(buf, "%d", EHEA_CAPABILITIES);
3588 }
3589
3590 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3591                    ehea_show_capabilities, NULL);
3592
3593 int __init ehea_module_init(void)
3594 {
3595         int ret;
3596
3597         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3598                DRV_VERSION);
3599
3600
3601         INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3602         memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3603         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3604
3605         mutex_init(&ehea_fw_handles.lock);
3606         spin_lock_init(&ehea_bcmc_regs.lock);
3607
3608         ret = check_module_parm();
3609         if (ret)
3610                 goto out;
3611
3612         ret = ehea_create_busmap();
3613         if (ret)
3614                 goto out;
3615
3616         ret = register_reboot_notifier(&ehea_reboot_nb);
3617         if (ret)
3618                 ehea_info("failed registering reboot notifier");
3619
3620         ret = register_memory_notifier(&ehea_mem_nb);
3621         if (ret)
3622                 ehea_info("failed registering memory remove notifier");
3623
3624         ret = crash_shutdown_register(&ehea_crash_handler);
3625         if (ret)
3626                 ehea_info("failed registering crash handler");
3627
3628         ret = ibmebus_register_driver(&ehea_driver);
3629         if (ret) {
3630                 ehea_error("failed registering eHEA device driver on ebus");
3631                 goto out2;
3632         }
3633
3634         ret = driver_create_file(&ehea_driver.driver,
3635                                  &driver_attr_capabilities);
3636         if (ret) {
3637                 ehea_error("failed to register capabilities attribute, ret=%d",
3638                            ret);
3639                 goto out3;
3640         }
3641
3642         return ret;
3643
3644 out3:
3645         ibmebus_unregister_driver(&ehea_driver);
3646 out2:
3647         unregister_memory_notifier(&ehea_mem_nb);
3648         unregister_reboot_notifier(&ehea_reboot_nb);
3649         crash_shutdown_unregister(&ehea_crash_handler);
3650 out:
3651         return ret;
3652 }
3653
3654 static void __exit ehea_module_exit(void)
3655 {
3656         int ret;
3657
3658         flush_scheduled_work();
3659         driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3660         ibmebus_unregister_driver(&ehea_driver);
3661         unregister_reboot_notifier(&ehea_reboot_nb);
3662         ret = crash_shutdown_unregister(&ehea_crash_handler);
3663         if (ret)
3664                 ehea_info("failed unregistering crash handler");
3665         unregister_memory_notifier(&ehea_mem_nb);
3666         kfree(ehea_fw_handles.arr);
3667         kfree(ehea_bcmc_regs.arr);
3668         ehea_destroy_busmap();
3669 }
3670
3671 module_init(ehea_module_init);
3672 module_exit(ehea_module_exit);