drivers/net/ehea/ehea_main.c

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