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/slab.h>
  36 #include <linux/if_ether.h>
  37 #include <linux/notifier.h>
  38 #include <linux/reboot.h>
  39 #include <linux/memory.h>
  40 #include <asm/kexec.h>
  41 #include <linux/mutex.h>
  42
  43 #include <net/ip.h>
  44
  45 #include "ehea.h"
  46 #include "ehea_qmr.h"
  47 #include "ehea_phyp.h"
  48
  49
  50 MODULE_LICENSE("GPL");
  51 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
  52 MODULE_DESCRIPTION("IBM eServer HEA Driver");
  53 MODULE_VERSION(DRV_VERSION);
  54
  55
  56 static int msg_level = -1;
  57 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
  58 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
  59 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
  60 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
  61 static int use_mcs;
  62 static int use_lro;
  63 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
  64 static int num_tx_qps = EHEA_NUM_TX_QP;
  65 static int prop_carrier_state;
  66
  67 module_param(msg_level, int, 0);
  68 module_param(rq1_entries, int, 0);
  69 module_param(rq2_entries, int, 0);
  70 module_param(rq3_entries, int, 0);
  71 module_param(sq_entries, int, 0);
  72 module_param(prop_carrier_state, int, 0);
  73 module_param(use_mcs, int, 0);
  74 module_param(use_lro, int, 0);
  75 module_param(lro_max_aggr, int, 0);
  76 module_param(num_tx_qps, int, 0);
  77
  78 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
  79 MODULE_PARM_DESC(msg_level, "msg_level");
  80 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
  81                  "port to stack. 1:yes, 0:no.  Default = 0 ");
  82 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
  83                  "[2^x - 1], x = [6..14]. Default = "
  84                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
  85 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
  86                  "[2^x - 1], x = [6..14]. Default = "
  87                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
  88 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
  89                  "[2^x - 1], x = [6..14]. Default = "
  90                  __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
  91 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue  "
  92                  "[2^x - 1], x = [6..14]. Default = "
  93                  __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
  94 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
  95
  96 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
  97                  __MODULE_STRING(EHEA_LRO_MAX_AGGR));
  98 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
  99                  "Default = 0");
 100
 101 static int port_name_cnt;
 102 static LIST_HEAD(adapter_list);
 103 static unsigned long ehea_driver_flags;
 104 struct work_struct ehea_rereg_mr_task;
 105 static DEFINE_MUTEX(dlpar_mem_lock);
 106 struct ehea_fw_handle_array ehea_fw_handles;
 107 struct ehea_bcmc_reg_array ehea_bcmc_regs;
 108
 109
 110 static int __devinit ehea_probe_adapter(struct platform_device *dev,
 111                                         const struct of_device_id *id);
 112
 113 static int __devexit ehea_remove(struct platform_device *dev);
 114
 115 static struct of_device_id ehea_device_table[] = {
 116         {
 117                 .name = "lhea",
 118                 .compatible = "IBM,lhea",
 119         },
 120         {},
 121 };
 122 MODULE_DEVICE_TABLE(of, ehea_device_table);
 123
 124 static struct of_platform_driver ehea_driver = {
 125         .driver = {
 126                 .name = "ehea",
 127                 .owner = THIS_MODULE,
 128                 .of_match_table = ehea_device_table,
 129         },
 130         .probe = ehea_probe_adapter,
 131         .remove = ehea_remove,
 132 };
 133
 134 void ehea_dump(void *adr, int len, char *msg)
 135 {
 136         int x;
 137         unsigned char *deb = adr;
 138         for (x = 0; x < len; x += 16) {
 139                 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
 140                           deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
 141                 deb += 16;
 142         }
 143 }
 144
 145 void ehea_schedule_port_reset(struct ehea_port *port)
 146 {
 147         if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
 148                 schedule_work(&port->reset_task);
 149 }
 150
 151 static void ehea_update_firmware_handles(void)
 152 {
 153         struct ehea_fw_handle_entry *arr = NULL;
 154         struct ehea_adapter *adapter;
 155         int num_adapters = 0;
 156         int num_ports = 0;
 157         int num_portres = 0;
 158         int i = 0;
 159         int num_fw_handles, k, l;
 160
 161         /* Determine number of handles */
 162         mutex_lock(&ehea_fw_handles.lock);
 163
 164         list_for_each_entry(adapter, &adapter_list, list) {
 165                 num_adapters++;
 166
 167                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 168                         struct ehea_port *port = adapter->port[k];
 169
 170                         if (!port || (port->state != EHEA_PORT_UP))
 171                                 continue;
 172
 173                         num_ports++;
 174                         num_portres += port->num_def_qps + port->num_add_tx_qps;
 175                 }
 176         }
 177
 178         num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
 179                          num_ports * EHEA_NUM_PORT_FW_HANDLES +
 180                          num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
 181
 182         if (num_fw_handles) {
 183                 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
 184                 if (!arr)
 185                         goto out;  /* Keep the existing array */
 186         } else
 187                 goto out_update;
 188
 189         list_for_each_entry(adapter, &adapter_list, list) {
 190                 if (num_adapters == 0)
 191                         break;
 192
 193                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 194                         struct ehea_port *port = adapter->port[k];
 195
 196                         if (!port || (port->state != EHEA_PORT_UP) ||
 197                             (num_ports == 0))
 198                                 continue;
 199
 200                         for (l = 0;
 201                              l < port->num_def_qps + port->num_add_tx_qps;
 202                              l++) {
 203                                 struct ehea_port_res *pr = &port->port_res[l];
 204
 205                                 arr[i].adh = adapter->handle;
 206                                 arr[i++].fwh = pr->qp->fw_handle;
 207                                 arr[i].adh = adapter->handle;
 208                                 arr[i++].fwh = pr->send_cq->fw_handle;
 209                                 arr[i].adh = adapter->handle;
 210                                 arr[i++].fwh = pr->recv_cq->fw_handle;
 211                                 arr[i].adh = adapter->handle;
 212                                 arr[i++].fwh = pr->eq->fw_handle;
 213                                 arr[i].adh = adapter->handle;
 214                                 arr[i++].fwh = pr->send_mr.handle;
 215                                 arr[i].adh = adapter->handle;
 216                                 arr[i++].fwh = pr->recv_mr.handle;
 217                         }
 218                         arr[i].adh = adapter->handle;
 219                         arr[i++].fwh = port->qp_eq->fw_handle;
 220                         num_ports--;
 221                 }
 222
 223                 arr[i].adh = adapter->handle;
 224                 arr[i++].fwh = adapter->neq->fw_handle;
 225
 226                 if (adapter->mr.handle) {
 227                         arr[i].adh = adapter->handle;
 228                         arr[i++].fwh = adapter->mr.handle;
 229                 }
 230                 num_adapters--;
 231         }
 232
 233 out_update:
 234         kfree(ehea_fw_handles.arr);
 235         ehea_fw_handles.arr = arr;
 236         ehea_fw_handles.num_entries = i;
 237 out:
 238         mutex_unlock(&ehea_fw_handles.lock);
 239 }
 240
 241 static void ehea_update_bcmc_registrations(void)
 242 {
 243         unsigned long flags;
 244         struct ehea_bcmc_reg_entry *arr = NULL;
 245         struct ehea_adapter *adapter;
 246         struct ehea_mc_list *mc_entry;
 247         int num_registrations = 0;
 248         int i = 0;
 249         int k;
 250
 251         spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
 252
 253         /* Determine number of registrations */
 254         list_for_each_entry(adapter, &adapter_list, list)
 255                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 256                         struct ehea_port *port = adapter->port[k];
 257
 258                         if (!port || (port->state != EHEA_PORT_UP))
 259                                 continue;
 260
 261                         num_registrations += 2; /* Broadcast registrations */
 262
 263                         list_for_each_entry(mc_entry, &port->mc_list->list,list)
 264                                 num_registrations += 2;
 265                 }
 266
 267         if (num_registrations) {
 268                 arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
 269                 if (!arr)
 270                         goto out;  /* Keep the existing array */
 271         } else
 272                 goto out_update;
 273
 274         list_for_each_entry(adapter, &adapter_list, list) {
 275                 for (k = 0; k < EHEA_MAX_PORTS; k++) {
 276                         struct ehea_port *port = adapter->port[k];
 277
 278                         if (!port || (port->state != EHEA_PORT_UP))
 279                                 continue;
 280
 281                         if (num_registrations == 0)
 282                                 goto out_update;
 283
 284                         arr[i].adh = adapter->handle;
 285                         arr[i].port_id = port->logical_port_id;
 286                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 287                                           EHEA_BCMC_UNTAGGED;
 288                         arr[i++].macaddr = port->mac_addr;
 289
 290                         arr[i].adh = adapter->handle;
 291                         arr[i].port_id = port->logical_port_id;
 292                         arr[i].reg_type = EHEA_BCMC_BROADCAST |
 293                                           EHEA_BCMC_VLANID_ALL;
 294                         arr[i++].macaddr = port->mac_addr;
 295                         num_registrations -= 2;
 296
 297                         list_for_each_entry(mc_entry,
 298                                             &port->mc_list->list, list) {
 299                                 if (num_registrations == 0)
 300                                         goto out_update;
 301
 302                                 arr[i].adh = adapter->handle;
 303                                 arr[i].port_id = port->logical_port_id;
 304                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 305                                                   EHEA_BCMC_MULTICAST |
 306                                                   EHEA_BCMC_UNTAGGED;
 307                                 arr[i++].macaddr = mc_entry->macaddr;
 308
 309                                 arr[i].adh = adapter->handle;
 310                                 arr[i].port_id = port->logical_port_id;
 311                                 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
 312                                                   EHEA_BCMC_MULTICAST |
 313                                                   EHEA_BCMC_VLANID_ALL;
 314                                 arr[i++].macaddr = mc_entry->macaddr;
 315                                 num_registrations -= 2;
 316                         }
 317                 }
 318         }
 319
 320 out_update:
 321         kfree(ehea_bcmc_regs.arr);
 322         ehea_bcmc_regs.arr = arr;
 323         ehea_bcmc_regs.num_entries = i;
 324 out:
 325         spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
 326 }
 327
 328 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
 329 {
 330         struct ehea_port *port = netdev_priv(dev);
 331         struct net_device_stats *stats = &port->stats;
 332         struct hcp_ehea_port_cb2 *cb2;
 333         u64 hret, rx_packets, tx_packets;
 334         int i;
 335
 336         memset(stats, 0, sizeof(*stats));
 337
 338         cb2 = (void *)get_zeroed_page(GFP_KERNEL);
 339         if (!cb2) {
 340                 ehea_error("no mem for cb2");
 341                 goto out;
 342         }
 343
 344         hret = ehea_h_query_ehea_port(port->adapter->handle,
 345                                       port->logical_port_id,
 346                                       H_PORT_CB2, H_PORT_CB2_ALL, cb2);
 347         if (hret != H_SUCCESS) {
 348                 ehea_error("query_ehea_port failed");
 349                 goto out_herr;
 350         }
 351
 352         if (netif_msg_hw(port))
 353                 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
 354
 355         rx_packets = 0;
 356         for (i = 0; i < port->num_def_qps; i++)
 357                 rx_packets += port->port_res[i].rx_packets;
 358
 359         tx_packets = 0;
 360         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
 361                 tx_packets += port->port_res[i].tx_packets;
 362
 363         stats->tx_packets = tx_packets;
 364         stats->multicast = cb2->rxmcp;
 365         stats->rx_errors = cb2->rxuerr;
 366         stats->rx_bytes = cb2->rxo;
 367         stats->tx_bytes = cb2->txo;
 368         stats->rx_packets = rx_packets;
 369
 370 out_herr:
 371         free_page((unsigned long)cb2);
 372 out:
 373         return stats;
 374 }
 375
 376 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
 377 {
 378         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 379         struct net_device *dev = pr->port->netdev;
 380         int max_index_mask = pr->rq1_skba.len - 1;
 381         int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
 382         int adder = 0;
 383         int i;
 384
 385         pr->rq1_skba.os_skbs = 0;
 386
 387         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 388                 if (nr_of_wqes > 0)
 389                         pr->rq1_skba.index = index;
 390                 pr->rq1_skba.os_skbs = fill_wqes;
 391                 return;
 392         }
 393
 394         for (i = 0; i < fill_wqes; i++) {
 395                 if (!skb_arr_rq1[index]) {
 396                         skb_arr_rq1[index] = netdev_alloc_skb(dev,
 397                                                               EHEA_L_PKT_SIZE);
 398                         if (!skb_arr_rq1[index]) {
 399                                 pr->rq1_skba.os_skbs = fill_wqes - i;
 400                                 break;
 401                         }
 402                 }
 403                 index--;
 404                 index &= max_index_mask;
 405                 adder++;
 406         }
 407
 408         if (adder == 0)
 409                 return;
 410
 411         /* Ring doorbell */
 412         ehea_update_rq1a(pr->qp, adder);
 413 }
 414
 415 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
 416 {
 417         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 418         struct net_device *dev = pr->port->netdev;
 419         int i;
 420
 421         for (i = 0; i < pr->rq1_skba.len; i++) {
 422                 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
 423                 if (!skb_arr_rq1[i])
 424                         break;
 425         }
 426         /* Ring doorbell */
 427         ehea_update_rq1a(pr->qp, nr_rq1a);
 428 }
 429
 430 static int ehea_refill_rq_def(struct ehea_port_res *pr,
 431                               struct ehea_q_skb_arr *q_skba, int rq_nr,
 432                               int num_wqes, int wqe_type, int packet_size)
 433 {
 434         struct net_device *dev = pr->port->netdev;
 435         struct ehea_qp *qp = pr->qp;
 436         struct sk_buff **skb_arr = q_skba->arr;
 437         struct ehea_rwqe *rwqe;
 438         int i, index, max_index_mask, fill_wqes;
 439         int adder = 0;
 440         int ret = 0;
 441
 442         fill_wqes = q_skba->os_skbs + num_wqes;
 443         q_skba->os_skbs = 0;
 444
 445         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
 446                 q_skba->os_skbs = fill_wqes;
 447                 return ret;
 448         }
 449
 450         index = q_skba->index;
 451         max_index_mask = q_skba->len - 1;
 452         for (i = 0; i < fill_wqes; i++) {
 453                 u64 tmp_addr;
 454                 struct sk_buff *skb;
 455
 456                 skb = netdev_alloc_skb_ip_align(dev, packet_size);
 457                 if (!skb) {
 458                         q_skba->os_skbs = fill_wqes - i;
 459                         if (q_skba->os_skbs == q_skba->len - 2) {
 460                                 ehea_info("%s: rq%i ran dry - no mem for skb",
 461                                           pr->port->netdev->name, rq_nr);
 462                                 ret = -ENOMEM;
 463                         }
 464                         break;
 465                 }
 466
 467                 skb_arr[index] = skb;
 468                 tmp_addr = ehea_map_vaddr(skb->data);
 469                 if (tmp_addr == -1) {
 470                         dev_kfree_skb(skb);
 471                         q_skba->os_skbs = fill_wqes - i;
 472                         ret = 0;
 473                         break;
 474                 }
 475
 476                 rwqe = ehea_get_next_rwqe(qp, rq_nr);
 477                 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
 478                             | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
 479                 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
 480                 rwqe->sg_list[0].vaddr = tmp_addr;
 481                 rwqe->sg_list[0].len = packet_size;
 482                 rwqe->data_segments = 1;
 483
 484                 index++;
 485                 index &= max_index_mask;
 486                 adder++;
 487         }
 488
 489         q_skba->index = index;
 490         if (adder == 0)
 491                 goto out;
 492
 493         /* Ring doorbell */
 494         iosync();
 495         if (rq_nr == 2)
 496                 ehea_update_rq2a(pr->qp, adder);
 497         else
 498                 ehea_update_rq3a(pr->qp, adder);
 499 out:
 500         return ret;
 501 }
 502
 503
 504 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
 505 {
 506         return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
 507                                   nr_of_wqes, EHEA_RWQE2_TYPE,
 508                                   EHEA_RQ2_PKT_SIZE);
 509 }
 510
 511
 512 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
 513 {
 514         return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
 515                                   nr_of_wqes, EHEA_RWQE3_TYPE,
 516                                   EHEA_MAX_PACKET_SIZE);
 517 }
 518
 519 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
 520 {
 521         *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
 522         if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
 523                 return 0;
 524         if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
 525             (cqe->header_length == 0))
 526                 return 0;
 527         return -EINVAL;
 528 }
 529
 530 static inline void ehea_fill_skb(struct net_device *dev,
 531                                  struct sk_buff *skb, struct ehea_cqe *cqe)
 532 {
 533         int length = cqe->num_bytes_transfered - 4;     /*remove CRC */
 534
 535         skb_put(skb, length);
 536         skb->ip_summed = CHECKSUM_UNNECESSARY;
 537         skb->protocol = eth_type_trans(skb, dev);
 538 }
 539
 540 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
 541                                                int arr_len,
 542                                                struct ehea_cqe *cqe)
 543 {
 544         int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 545         struct sk_buff *skb;
 546         void *pref;
 547         int x;
 548
 549         x = skb_index + 1;
 550         x &= (arr_len - 1);
 551
 552         pref = skb_array[x];
 553         if (pref) {
 554                 prefetchw(pref);
 555                 prefetchw(pref + EHEA_CACHE_LINE);
 556
 557                 pref = (skb_array[x]->data);
 558                 prefetch(pref);
 559                 prefetch(pref + EHEA_CACHE_LINE);
 560                 prefetch(pref + EHEA_CACHE_LINE * 2);
 561                 prefetch(pref + EHEA_CACHE_LINE * 3);
 562         }
 563
 564         skb = skb_array[skb_index];
 565         skb_array[skb_index] = NULL;
 566         return skb;
 567 }
 568
 569 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
 570                                                   int arr_len, int wqe_index)
 571 {
 572         struct sk_buff *skb;
 573         void *pref;
 574         int x;
 575
 576         x = wqe_index + 1;
 577         x &= (arr_len - 1);
 578
 579         pref = skb_array[x];
 580         if (pref) {
 581                 prefetchw(pref);
 582                 prefetchw(pref + EHEA_CACHE_LINE);
 583
 584                 pref = (skb_array[x]->data);
 585                 prefetchw(pref);
 586                 prefetchw(pref + EHEA_CACHE_LINE);
 587         }
 588
 589         skb = skb_array[wqe_index];
 590         skb_array[wqe_index] = NULL;
 591         return skb;
 592 }
 593
 594 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
 595                                  struct ehea_cqe *cqe, int *processed_rq2,
 596                                  int *processed_rq3)
 597 {
 598         struct sk_buff *skb;
 599
 600         if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
 601                 pr->p_stats.err_tcp_cksum++;
 602         if (cqe->status & EHEA_CQE_STAT_ERR_IP)
 603                 pr->p_stats.err_ip_cksum++;
 604         if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
 605                 pr->p_stats.err_frame_crc++;
 606
 607         if (rq == 2) {
 608                 *processed_rq2 += 1;
 609                 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
 610                 dev_kfree_skb(skb);
 611         } else if (rq == 3) {
 612                 *processed_rq3 += 1;
 613                 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
 614                 dev_kfree_skb(skb);
 615         }
 616
 617         if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
 618                 if (netif_msg_rx_err(pr->port)) {
 619                         ehea_error("Critical receive error for QP %d. "
 620                                    "Resetting port.", pr->qp->init_attr.qp_nr);
 621                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 622                 }
 623                 ehea_schedule_port_reset(pr->port);
 624                 return 1;
 625         }
 626
 627         return 0;
 628 }
 629
 630 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
 631                        void **tcph, u64 *hdr_flags, void *priv)
 632 {
 633         struct ehea_cqe *cqe = priv;
 634         unsigned int ip_len;
 635         struct iphdr *iph;
 636
 637         /* non tcp/udp packets */
 638         if (!cqe->header_length)
 639                 return -1;
 640
 641         /* non tcp packet */
 642         skb_reset_network_header(skb);
 643         iph = ip_hdr(skb);
 644         if (iph->protocol != IPPROTO_TCP)
 645                 return -1;
 646
 647         ip_len = ip_hdrlen(skb);
 648         skb_set_transport_header(skb, ip_len);
 649         *tcph = tcp_hdr(skb);
 650
 651         /* check if ip header and tcp header are complete */
 652         if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
 653                 return -1;
 654
 655         *hdr_flags = LRO_IPV4 | LRO_TCP;
 656         *iphdr = iph;
 657
 658         return 0;
 659 }
 660
 661 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
 662                           struct sk_buff *skb)
 663 {
 664         int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
 665                               pr->port->vgrp);
 666
 667         if (use_lro) {
 668                 if (vlan_extracted)
 669                         lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
 670                                                      pr->port->vgrp,
 671                                                      cqe->vlan_tag,
 672                                                      cqe);
 673                 else
 674                         lro_receive_skb(&pr->lro_mgr, skb, cqe);
 675         } else {
 676                 if (vlan_extracted)
 677                         vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
 678                                                  cqe->vlan_tag);
 679                 else
 680                         netif_receive_skb(skb);
 681         }
 682 }
 683
 684 static int ehea_proc_rwqes(struct net_device *dev,
 685                            struct ehea_port_res *pr,
 686                            int budget)
 687 {
 688         struct ehea_port *port = pr->port;
 689         struct ehea_qp *qp = pr->qp;
 690         struct ehea_cqe *cqe;
 691         struct sk_buff *skb;
 692         struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
 693         struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
 694         struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
 695         int skb_arr_rq1_len = pr->rq1_skba.len;
 696         int skb_arr_rq2_len = pr->rq2_skba.len;
 697         int skb_arr_rq3_len = pr->rq3_skba.len;
 698         int processed, processed_rq1, processed_rq2, processed_rq3;
 699         int wqe_index, last_wqe_index, rq, port_reset;
 700
 701         processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
 702         last_wqe_index = 0;
 703
 704         cqe = ehea_poll_rq1(qp, &wqe_index);
 705         while ((processed < budget) && cqe) {
 706                 ehea_inc_rq1(qp);
 707                 processed_rq1++;
 708                 processed++;
 709                 if (netif_msg_rx_status(port))
 710                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 711
 712                 last_wqe_index = wqe_index;
 713                 rmb();
 714                 if (!ehea_check_cqe(cqe, &rq)) {
 715                         if (rq == 1) {
 716                                 /* LL RQ1 */
 717                                 skb = get_skb_by_index_ll(skb_arr_rq1,
 718                                                           skb_arr_rq1_len,
 719                                                           wqe_index);
 720                                 if (unlikely(!skb)) {
 721                                         if (netif_msg_rx_err(port))
 722                                                 ehea_error("LL rq1: skb=NULL");
 723
 724                                         skb = netdev_alloc_skb(dev,
 725                                                                EHEA_L_PKT_SIZE);
 726                                         if (!skb)
 727                                                 break;
 728                                 }
 729                                 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
 730                                                  cqe->num_bytes_transfered - 4);
 731                                 ehea_fill_skb(dev, skb, cqe);
 732                         } else if (rq == 2) {
 733                                 /* RQ2 */
 734                                 skb = get_skb_by_index(skb_arr_rq2,
 735                                                        skb_arr_rq2_len, cqe);
 736                                 if (unlikely(!skb)) {
 737                                         if (netif_msg_rx_err(port))
 738                                                 ehea_error("rq2: skb=NULL");
 739                                         break;
 740                                 }
 741                                 ehea_fill_skb(dev, skb, cqe);
 742                                 processed_rq2++;
 743                         } else {
 744                                 /* RQ3 */
 745                                 skb = get_skb_by_index(skb_arr_rq3,
 746                                                        skb_arr_rq3_len, cqe);
 747                                 if (unlikely(!skb)) {
 748                                         if (netif_msg_rx_err(port))
 749                                                 ehea_error("rq3: skb=NULL");
 750                                         break;
 751                                 }
 752                                 ehea_fill_skb(dev, skb, cqe);
 753                                 processed_rq3++;
 754                         }
 755
 756                         ehea_proc_skb(pr, cqe, skb);
 757                 } else {
 758                         pr->p_stats.poll_receive_errors++;
 759                         port_reset = ehea_treat_poll_error(pr, rq, cqe,
 760                                                            &processed_rq2,
 761                                                            &processed_rq3);
 762                         if (port_reset)
 763                                 break;
 764                 }
 765                 cqe = ehea_poll_rq1(qp, &wqe_index);
 766         }
 767         if (use_lro)
 768                 lro_flush_all(&pr->lro_mgr);
 769
 770         pr->rx_packets += processed;
 771
 772         ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
 773         ehea_refill_rq2(pr, processed_rq2);
 774         ehea_refill_rq3(pr, processed_rq3);
 775
 776         return processed;
 777 }
 778
 779 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
 780 {
 781         struct sk_buff *skb;
 782         struct ehea_cq *send_cq = pr->send_cq;
 783         struct ehea_cqe *cqe;
 784         int quota = my_quota;
 785         int cqe_counter = 0;
 786         int swqe_av = 0;
 787         int index;
 788         unsigned long flags;
 789
 790         cqe = ehea_poll_cq(send_cq);
 791         while (cqe && (quota > 0)) {
 792                 ehea_inc_cq(send_cq);
 793
 794                 cqe_counter++;
 795                 rmb();
 796                 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
 797                         ehea_error("Bad send completion status=0x%04X",
 798                                    cqe->status);
 799
 800                         if (netif_msg_tx_err(pr->port))
 801                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
 802
 803                         if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
 804                                 ehea_error("Resetting port");
 805                                 ehea_schedule_port_reset(pr->port);
 806                                 break;
 807                         }
 808                 }
 809
 810                 if (netif_msg_tx_done(pr->port))
 811                         ehea_dump(cqe, sizeof(*cqe), "CQE");
 812
 813                 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
 814                            == EHEA_SWQE2_TYPE)) {
 815
 816                         index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
 817                         skb = pr->sq_skba.arr[index];
 818                         dev_kfree_skb(skb);
 819                         pr->sq_skba.arr[index] = NULL;
 820                 }
 821
 822                 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
 823                 quota--;
 824
 825                 cqe = ehea_poll_cq(send_cq);
 826         }
 827
 828         ehea_update_feca(send_cq, cqe_counter);
 829         atomic_add(swqe_av, &pr->swqe_avail);
 830
 831         spin_lock_irqsave(&pr->netif_queue, flags);
 832
 833         if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
 834                                   >= pr->swqe_refill_th)) {
 835                 netif_wake_queue(pr->port->netdev);
 836                 pr->queue_stopped = 0;
 837         }
 838         spin_unlock_irqrestore(&pr->netif_queue, flags);
 839
 840         return cqe;
 841 }
 842
 843 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
 844 #define EHEA_POLL_MAX_CQES 65535
 845
 846 static int ehea_poll(struct napi_struct *napi, int budget)
 847 {
 848         struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
 849                                                 napi);
 850         struct net_device *dev = pr->port->netdev;
 851         struct ehea_cqe *cqe;
 852         struct ehea_cqe *cqe_skb = NULL;
 853         int force_irq, wqe_index;
 854         int rx = 0;
 855
 856         force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
 857         cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 858
 859         if (!force_irq)
 860                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 861
 862         while ((rx != budget) || force_irq) {
 863                 pr->poll_counter = 0;
 864                 force_irq = 0;
 865                 napi_complete(napi);
 866                 ehea_reset_cq_ep(pr->recv_cq);
 867                 ehea_reset_cq_ep(pr->send_cq);
 868                 ehea_reset_cq_n1(pr->recv_cq);
 869                 ehea_reset_cq_n1(pr->send_cq);
 870                 rmb();
 871                 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
 872                 cqe_skb = ehea_poll_cq(pr->send_cq);
 873
 874                 if (!cqe && !cqe_skb)
 875                         return rx;
 876
 877                 if (!napi_reschedule(napi))
 878                         return rx;
 879
 880                 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 881                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 882         }
 883
 884         pr->poll_counter++;
 885         return rx;
 886 }
 887
 888 #ifdef CONFIG_NET_POLL_CONTROLLER
 889 static void ehea_netpoll(struct net_device *dev)
 890 {
 891         struct ehea_port *port = netdev_priv(dev);
 892         int i;
 893
 894         for (i = 0; i < port->num_def_qps; i++)
 895                 napi_schedule(&port->port_res[i].napi);
 896 }
 897 #endif
 898
 899 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 900 {
 901         struct ehea_port_res *pr = param;
 902
 903         napi_schedule(&pr->napi);
 904
 905         return IRQ_HANDLED;
 906 }
 907
 908 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 909 {
 910         struct ehea_port *port = param;
 911         struct ehea_eqe *eqe;
 912         struct ehea_qp *qp;
 913         u32 qp_token;
 914         u64 resource_type, aer, aerr;
 915         int reset_port = 0;
 916
 917         eqe = ehea_poll_eq(port->qp_eq);
 918
 919         while (eqe) {
 920                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 921                 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
 922                            eqe->entry, qp_token);
 923
 924                 qp = port->port_res[qp_token].qp;
 925
 926                 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
 927                                                 &aer, &aerr);
 928
 929                 if (resource_type == EHEA_AER_RESTYPE_QP) {
 930                         if ((aer & EHEA_AER_RESET_MASK) ||
 931                             (aerr & EHEA_AERR_RESET_MASK))
 932                                  reset_port = 1;
 933                 } else
 934                         reset_port = 1;   /* Reset in case of CQ or EQ error */
 935
 936                 eqe = ehea_poll_eq(port->qp_eq);
 937         }
 938
 939         if (reset_port) {
 940                 ehea_error("Resetting port");
 941                 ehea_schedule_port_reset(port);
 942         }
 943
 944         return IRQ_HANDLED;
 945 }
 946
 947 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 948                                        int logical_port)
 949 {
 950         int i;
 951
 952         for (i = 0; i < EHEA_MAX_PORTS; i++)
 953                 if (adapter->port[i])
 954                         if (adapter->port[i]->logical_port_id == logical_port)
 955                                 return adapter->port[i];
 956         return NULL;
 957 }
 958
 959 int ehea_sense_port_attr(struct ehea_port *port)
 960 {
 961         int ret;
 962         u64 hret;
 963         struct hcp_ehea_port_cb0 *cb0;
 964
 965         /* may be called via ehea_neq_tasklet() */
 966         cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
 967         if (!cb0) {
 968                 ehea_error("no mem for cb0");
 969                 ret = -ENOMEM;
 970                 goto out;
 971         }
 972
 973         hret = ehea_h_query_ehea_port(port->adapter->handle,
 974                                       port->logical_port_id, H_PORT_CB0,
 975                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 976                                       cb0);
 977         if (hret != H_SUCCESS) {
 978                 ret = -EIO;
 979                 goto out_free;
 980         }
 981
 982         /* MAC address */
 983         port->mac_addr = cb0->port_mac_addr << 16;
 984
 985         if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
 986                 ret = -EADDRNOTAVAIL;
 987                 goto out_free;
 988         }
 989
 990         /* Port speed */
 991         switch (cb0->port_speed) {
 992         case H_SPEED_10M_H:
 993                 port->port_speed = EHEA_SPEED_10M;
 994                 port->full_duplex = 0;
 995                 break;
 996         case H_SPEED_10M_F:
 997                 port->port_speed = EHEA_SPEED_10M;
 998                 port->full_duplex = 1;
 999                 break;
1000         case H_SPEED_100M_H:
1001                 port->port_speed = EHEA_SPEED_100M;
1002                 port->full_duplex = 0;
1003                 break;
1004         case H_SPEED_100M_F:
1005                 port->port_speed = EHEA_SPEED_100M;
1006                 port->full_duplex = 1;
1007                 break;
1008         case H_SPEED_1G_F:
1009                 port->port_speed = EHEA_SPEED_1G;
1010                 port->full_duplex = 1;
1011                 break;
1012         case H_SPEED_10G_F:
1013                 port->port_speed = EHEA_SPEED_10G;
1014                 port->full_duplex = 1;
1015                 break;
1016         default:
1017                 port->port_speed = 0;
1018                 port->full_duplex = 0;
1019                 break;
1020         }
1021
1022         port->autoneg = 1;
1023         port->num_mcs = cb0->num_default_qps;
1024
1025         /* Number of default QPs */
1026         if (use_mcs)
1027                 port->num_def_qps = cb0->num_default_qps;
1028         else
1029                 port->num_def_qps = 1;
1030
1031         if (!port->num_def_qps) {
1032                 ret = -EINVAL;
1033                 goto out_free;
1034         }
1035
1036         port->num_tx_qps = num_tx_qps;
1037
1038         if (port->num_def_qps >= port->num_tx_qps)
1039                 port->num_add_tx_qps = 0;
1040         else
1041                 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
1042
1043         ret = 0;
1044 out_free:
1045         if (ret || netif_msg_probe(port))
1046                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1047         free_page((unsigned long)cb0);
1048 out:
1049         return ret;
1050 }
1051
1052 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1053 {
1054         struct hcp_ehea_port_cb4 *cb4;
1055         u64 hret;
1056         int ret = 0;
1057
1058         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1059         if (!cb4) {
1060                 ehea_error("no mem for cb4");
1061                 ret = -ENOMEM;
1062                 goto out;
1063         }
1064
1065         cb4->port_speed = port_speed;
1066
1067         netif_carrier_off(port->netdev);
1068
1069         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1070                                        port->logical_port_id,
1071                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1072         if (hret == H_SUCCESS) {
1073                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1074
1075                 hret = ehea_h_query_ehea_port(port->adapter->handle,
1076                                               port->logical_port_id,
1077                                               H_PORT_CB4, H_PORT_CB4_SPEED,
1078                                               cb4);
1079                 if (hret == H_SUCCESS) {
1080                         switch (cb4->port_speed) {
1081                         case H_SPEED_10M_H:
1082                                 port->port_speed = EHEA_SPEED_10M;
1083                                 port->full_duplex = 0;
1084                                 break;
1085                         case H_SPEED_10M_F:
1086                                 port->port_speed = EHEA_SPEED_10M;
1087                                 port->full_duplex = 1;
1088                                 break;
1089                         case H_SPEED_100M_H:
1090                                 port->port_speed = EHEA_SPEED_100M;
1091                                 port->full_duplex = 0;
1092                                 break;
1093                         case H_SPEED_100M_F:
1094                                 port->port_speed = EHEA_SPEED_100M;
1095                                 port->full_duplex = 1;
1096                                 break;
1097                         case H_SPEED_1G_F:
1098                                 port->port_speed = EHEA_SPEED_1G;
1099                                 port->full_duplex = 1;
1100                                 break;
1101                         case H_SPEED_10G_F:
1102                                 port->port_speed = EHEA_SPEED_10G;
1103                                 port->full_duplex = 1;
1104                                 break;
1105                         default:
1106                                 port->port_speed = 0;
1107                                 port->full_duplex = 0;
1108                                 break;
1109                         }
1110                 } else {
1111                         ehea_error("Failed sensing port speed");
1112                         ret = -EIO;
1113                 }
1114         } else {
1115                 if (hret == H_AUTHORITY) {
1116                         ehea_info("Hypervisor denied setting port speed");
1117                         ret = -EPERM;
1118                 } else {
1119                         ret = -EIO;
1120                         ehea_error("Failed setting port speed");
1121                 }
1122         }
1123         if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1124                 netif_carrier_on(port->netdev);
1125
1126         free_page((unsigned long)cb4);
1127 out:
1128         return ret;
1129 }
1130
1131 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1132 {
1133         int ret;
1134         u8 ec;
1135         u8 portnum;
1136         struct ehea_port *port;
1137
1138         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1139         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1140         port = ehea_get_port(adapter, portnum);
1141
1142         switch (ec) {
1143         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
1144
1145                 if (!port) {
1146                         ehea_error("unknown portnum %x", portnum);
1147                         break;
1148                 }
1149
1150                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1151                         if (!netif_carrier_ok(port->netdev)) {
1152                                 ret = ehea_sense_port_attr(port);
1153                                 if (ret) {
1154                                         ehea_error("failed resensing port "
1155                                                    "attributes");
1156                                         break;
1157                                 }
1158
1159                                 if (netif_msg_link(port))
1160                                         ehea_info("%s: Logical port up: %dMbps "
1161                                                   "%s Duplex",
1162                                                   port->netdev->name,
1163                                                   port->port_speed,
1164                                                   port->full_duplex ==
1165                                                   1 ? "Full" : "Half");
1166
1167                                 netif_carrier_on(port->netdev);
1168                                 netif_wake_queue(port->netdev);
1169                         }
1170                 } else
1171                         if (netif_carrier_ok(port->netdev)) {
1172                                 if (netif_msg_link(port))
1173                                         ehea_info("%s: Logical port down",
1174                                                   port->netdev->name);
1175                                 netif_carrier_off(port->netdev);
1176                                 netif_stop_queue(port->netdev);
1177                         }
1178
1179                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1180                         port->phy_link = EHEA_PHY_LINK_UP;
1181                         if (netif_msg_link(port))
1182                                 ehea_info("%s: Physical port up",
1183                                           port->netdev->name);
1184                         if (prop_carrier_state)
1185                                 netif_carrier_on(port->netdev);
1186                 } else {
1187                         port->phy_link = EHEA_PHY_LINK_DOWN;
1188                         if (netif_msg_link(port))
1189                                 ehea_info("%s: Physical port down",
1190                                           port->netdev->name);
1191                         if (prop_carrier_state)
1192                                 netif_carrier_off(port->netdev);
1193                 }
1194
1195                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1196                         ehea_info("External switch port is primary port");
1197                 else
1198                         ehea_info("External switch port is backup port");
1199
1200                 break;
1201         case EHEA_EC_ADAPTER_MALFUNC:
1202                 ehea_error("Adapter malfunction");
1203                 break;
1204         case EHEA_EC_PORT_MALFUNC:
1205                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1206                 netif_carrier_off(port->netdev);
1207                 netif_stop_queue(port->netdev);
1208                 break;
1209         default:
1210                 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1211                 break;
1212         }
1213 }
1214
1215 static void ehea_neq_tasklet(unsigned long data)
1216 {
1217         struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1218         struct ehea_eqe *eqe;
1219         u64 event_mask;
1220
1221         eqe = ehea_poll_eq(adapter->neq);
1222         ehea_debug("eqe=%p", eqe);
1223
1224         while (eqe) {
1225                 ehea_debug("*eqe=%lx", eqe->entry);
1226                 ehea_parse_eqe(adapter, eqe->entry);
1227                 eqe = ehea_poll_eq(adapter->neq);
1228                 ehea_debug("next eqe=%p", eqe);
1229         }
1230
1231         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1232                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1233                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1234
1235         ehea_h_reset_events(adapter->handle,
1236                             adapter->neq->fw_handle, event_mask);
1237 }
1238
1239 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1240 {
1241         struct ehea_adapter *adapter = param;
1242         tasklet_hi_schedule(&adapter->neq_tasklet);
1243         return IRQ_HANDLED;
1244 }
1245
1246
1247 static int ehea_fill_port_res(struct ehea_port_res *pr)
1248 {
1249         int ret;
1250         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1251
1252         ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1253                                - init_attr->act_nr_rwqes_rq2
1254                                - init_attr->act_nr_rwqes_rq3 - 1);
1255
1256         ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1257
1258         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1259
1260         return ret;
1261 }
1262
1263 static int ehea_reg_interrupts(struct net_device *dev)
1264 {
1265         struct ehea_port *port = netdev_priv(dev);
1266         struct ehea_port_res *pr;
1267         int i, ret;
1268
1269
1270         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1271                  dev->name);
1272
1273         ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1274                                   ehea_qp_aff_irq_handler,
1275                                   IRQF_DISABLED, port->int_aff_name, port);
1276         if (ret) {
1277                 ehea_error("failed registering irq for qp_aff_irq_handler:"
1278                            "ist=%X", port->qp_eq->attr.ist1);
1279                 goto out_free_qpeq;
1280         }
1281
1282         if (netif_msg_ifup(port))
1283                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1284                           "registered", port->qp_eq->attr.ist1);
1285
1286
1287         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1288                 pr = &port->port_res[i];
1289                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1290                          "%s-queue%d", dev->name, i);
1291                 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1292                                           ehea_recv_irq_handler,
1293                                           IRQF_DISABLED, pr->int_send_name,
1294                                           pr);
1295                 if (ret) {
1296                         ehea_error("failed registering irq for ehea_queue "
1297                                    "port_res_nr:%d, ist=%X", i,
1298                                    pr->eq->attr.ist1);
1299                         goto out_free_req;
1300                 }
1301                 if (netif_msg_ifup(port))
1302                         ehea_info("irq_handle 0x%X for function ehea_queue_int "
1303                                   "%d registered", pr->eq->attr.ist1, i);
1304         }
1305 out:
1306         return ret;
1307
1308
1309 out_free_req:
1310         while (--i >= 0) {
1311                 u32 ist = port->port_res[i].eq->attr.ist1;
1312                 ibmebus_free_irq(ist, &port->port_res[i]);
1313         }
1314
1315 out_free_qpeq:
1316         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1317         i = port->num_def_qps;
1318
1319         goto out;
1320
1321 }
1322
1323 static void ehea_free_interrupts(struct net_device *dev)
1324 {
1325         struct ehea_port *port = netdev_priv(dev);
1326         struct ehea_port_res *pr;
1327         int i;
1328
1329         /* send */
1330
1331         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1332                 pr = &port->port_res[i];
1333                 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1334                 if (netif_msg_intr(port))
1335                         ehea_info("free send irq for res %d with handle 0x%X",
1336                                   i, pr->eq->attr.ist1);
1337         }
1338
1339         /* associated events */
1340         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1341         if (netif_msg_intr(port))
1342                 ehea_info("associated event interrupt for handle 0x%X freed",
1343                           port->qp_eq->attr.ist1);
1344 }
1345
1346 static int ehea_configure_port(struct ehea_port *port)
1347 {
1348         int ret, i;
1349         u64 hret, mask;
1350         struct hcp_ehea_port_cb0 *cb0;
1351
1352         ret = -ENOMEM;
1353         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1354         if (!cb0)
1355                 goto out;
1356
1357         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1358                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1359                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1360                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1361                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1362                                       PXLY_RC_VLAN_FILTER)
1363                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1364
1365         for (i = 0; i < port->num_mcs; i++)
1366                 if (use_mcs)
1367                         cb0->default_qpn_arr[i] =
1368                                 port->port_res[i].qp->init_attr.qp_nr;
1369                 else
1370                         cb0->default_qpn_arr[i] =
1371                                 port->port_res[0].qp->init_attr.qp_nr;
1372
1373         if (netif_msg_ifup(port))
1374                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1375
1376         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1377              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1378
1379         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1380                                        port->logical_port_id,
1381                                        H_PORT_CB0, mask, cb0);
1382         ret = -EIO;
1383         if (hret != H_SUCCESS)
1384                 goto out_free;
1385
1386         ret = 0;
1387
1388 out_free:
1389         free_page((unsigned long)cb0);
1390 out:
1391         return ret;
1392 }
1393
1394 int ehea_gen_smrs(struct ehea_port_res *pr)
1395 {
1396         int ret;
1397         struct ehea_adapter *adapter = pr->port->adapter;
1398
1399         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1400         if (ret)
1401                 goto out;
1402
1403         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1404         if (ret)
1405                 goto out_free;
1406
1407         return 0;
1408
1409 out_free:
1410         ehea_rem_mr(&pr->send_mr);
1411 out:
1412         ehea_error("Generating SMRS failed\n");
1413         return -EIO;
1414 }
1415
1416 int ehea_rem_smrs(struct ehea_port_res *pr)
1417 {
1418         if ((ehea_rem_mr(&pr->send_mr)) ||
1419             (ehea_rem_mr(&pr->recv_mr)))
1420                 return -EIO;
1421         else
1422                 return 0;
1423 }
1424
1425 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1426 {
1427         int arr_size = sizeof(void *) * max_q_entries;
1428
1429         q_skba->arr = vmalloc(arr_size);
1430         if (!q_skba->arr)
1431                 return -ENOMEM;
1432
1433         memset(q_skba->arr, 0, arr_size);
1434
1435         q_skba->len = max_q_entries;
1436         q_skba->index = 0;
1437         q_skba->os_skbs = 0;
1438
1439         return 0;
1440 }
1441
1442 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1443                               struct port_res_cfg *pr_cfg, int queue_token)
1444 {
1445         struct ehea_adapter *adapter = port->adapter;
1446         enum ehea_eq_type eq_type = EHEA_EQ;
1447         struct ehea_qp_init_attr *init_attr = NULL;
1448         int ret = -EIO;
1449
1450         memset(pr, 0, sizeof(struct ehea_port_res));
1451
1452         pr->port = port;
1453         spin_lock_init(&pr->xmit_lock);
1454         spin_lock_init(&pr->netif_queue);
1455
1456         pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1457         if (!pr->eq) {
1458                 ehea_error("create_eq failed (eq)");
1459                 goto out_free;
1460         }
1461
1462         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1463                                      pr->eq->fw_handle,
1464                                      port->logical_port_id);
1465         if (!pr->recv_cq) {
1466                 ehea_error("create_cq failed (cq_recv)");
1467                 goto out_free;
1468         }
1469
1470         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1471                                      pr->eq->fw_handle,
1472                                      port->logical_port_id);
1473         if (!pr->send_cq) {
1474                 ehea_error("create_cq failed (cq_send)");
1475                 goto out_free;
1476         }
1477
1478         if (netif_msg_ifup(port))
1479                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1480                           pr->send_cq->attr.act_nr_of_cqes,
1481                           pr->recv_cq->attr.act_nr_of_cqes);
1482
1483         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1484         if (!init_attr) {
1485                 ret = -ENOMEM;
1486                 ehea_error("no mem for ehea_qp_init_attr");
1487                 goto out_free;
1488         }
1489
1490         init_attr->low_lat_rq1 = 1;
1491         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1492         init_attr->rq_count = 3;
1493         init_attr->qp_token = queue_token;
1494         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1495         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1496         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1497         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1498         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1499         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1500         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1501         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1502         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1503         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1504         init_attr->port_nr = port->logical_port_id;
1505         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1506         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1507         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1508
1509         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1510         if (!pr->qp) {
1511                 ehea_error("create_qp failed");
1512                 ret = -EIO;
1513                 goto out_free;
1514         }
1515
1516         if (netif_msg_ifup(port))
1517                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1518                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1519                           init_attr->act_nr_send_wqes,
1520                           init_attr->act_nr_rwqes_rq1,
1521                           init_attr->act_nr_rwqes_rq2,
1522                           init_attr->act_nr_rwqes_rq3);
1523
1524         pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1525
1526         ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1527         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1528         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1529         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1530         if (ret)
1531                 goto out_free;
1532
1533         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1534         if (ehea_gen_smrs(pr) != 0) {
1535                 ret = -EIO;
1536                 goto out_free;
1537         }
1538
1539         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1540
1541         kfree(init_attr);
1542
1543         netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1544
1545         pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1546         pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1547         pr->lro_mgr.lro_arr = pr->lro_desc;
1548         pr->lro_mgr.get_skb_header = get_skb_hdr;
1549         pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1550         pr->lro_mgr.dev = port->netdev;
1551         pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1552         pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1553
1554         ret = 0;
1555         goto out;
1556
1557 out_free:
1558         kfree(init_attr);
1559         vfree(pr->sq_skba.arr);
1560         vfree(pr->rq1_skba.arr);
1561         vfree(pr->rq2_skba.arr);
1562         vfree(pr->rq3_skba.arr);
1563         ehea_destroy_qp(pr->qp);
1564         ehea_destroy_cq(pr->send_cq);
1565         ehea_destroy_cq(pr->recv_cq);
1566         ehea_destroy_eq(pr->eq);
1567 out:
1568         return ret;
1569 }
1570
1571 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1572 {
1573         int ret, i;
1574
1575         if (pr->qp)
1576                 netif_napi_del(&pr->napi);
1577
1578         ret = ehea_destroy_qp(pr->qp);
1579
1580         if (!ret) {
1581                 ehea_destroy_cq(pr->send_cq);
1582                 ehea_destroy_cq(pr->recv_cq);
1583                 ehea_destroy_eq(pr->eq);
1584
1585                 for (i = 0; i < pr->rq1_skba.len; i++)
1586                         if (pr->rq1_skba.arr[i])
1587                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1588
1589                 for (i = 0; i < pr->rq2_skba.len; i++)
1590                         if (pr->rq2_skba.arr[i])
1591                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1592
1593                 for (i = 0; i < pr->rq3_skba.len; i++)
1594                         if (pr->rq3_skba.arr[i])
1595                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1596
1597                 for (i = 0; i < pr->sq_skba.len; i++)
1598                         if (pr->sq_skba.arr[i])
1599                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1600
1601                 vfree(pr->rq1_skba.arr);
1602                 vfree(pr->rq2_skba.arr);
1603                 vfree(pr->rq3_skba.arr);
1604                 vfree(pr->sq_skba.arr);
1605                 ret = ehea_rem_smrs(pr);
1606         }
1607         return ret;
1608 }
1609
1610 /*
1611  * The write_* functions store information in swqe which is used by
1612  * the hardware to calculate the ip/tcp/udp checksum
1613  */
1614
1615 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1616                                       const struct sk_buff *skb)
1617 {
1618         swqe->ip_start = skb_network_offset(skb);
1619         swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1620 }
1621
1622 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1623                                         const struct sk_buff *skb)
1624 {
1625         swqe->tcp_offset =
1626                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1627
1628         swqe->tcp_end = (u16)skb->len - 1;
1629 }
1630
1631 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1632                                         const struct sk_buff *skb)
1633 {
1634         swqe->tcp_offset =
1635                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1636
1637         swqe->tcp_end = (u16)skb->len - 1;
1638 }
1639
1640
1641 static void write_swqe2_TSO(struct sk_buff *skb,
1642                             struct ehea_swqe *swqe, u32 lkey)
1643 {
1644         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1645         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1646         int skb_data_size = skb_headlen(skb);
1647         int headersize;
1648
1649         /* Packet is TCP with TSO enabled */
1650         swqe->tx_control |= EHEA_SWQE_TSO;
1651         swqe->mss = skb_shinfo(skb)->gso_size;
1652         /* copy only eth/ip/tcp headers to immediate data and
1653          * the rest of skb->data to sg1entry
1654          */
1655         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1656
1657         skb_data_size = skb_headlen(skb);
1658
1659         if (skb_data_size >= headersize) {
1660                 /* copy immediate data */
1661                 skb_copy_from_linear_data(skb, imm_data, headersize);
1662                 swqe->immediate_data_length = headersize;
1663
1664                 if (skb_data_size > headersize) {
1665                         /* set sg1entry data */
1666                         sg1entry->l_key = lkey;
1667                         sg1entry->len = skb_data_size - headersize;
1668                         sg1entry->vaddr =
1669                                 ehea_map_vaddr(skb->data + headersize);
1670                         swqe->descriptors++;
1671                 }
1672         } else
1673                 ehea_error("cannot handle fragmented headers");
1674 }
1675
1676 static void write_swqe2_nonTSO(struct sk_buff *skb,
1677                                struct ehea_swqe *swqe, u32 lkey)
1678 {
1679         int skb_data_size = skb_headlen(skb);
1680         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1681         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1682
1683         /* Packet is any nonTSO type
1684          *
1685          * Copy as much as possible skb->data to immediate data and
1686          * the rest to sg1entry
1687          */
1688         if (skb_data_size >= SWQE2_MAX_IMM) {
1689                 /* copy immediate data */
1690                 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1691
1692                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1693
1694                 if (skb_data_size > SWQE2_MAX_IMM) {
1695                         /* copy sg1entry data */
1696                         sg1entry->l_key = lkey;
1697                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1698                         sg1entry->vaddr =
1699                                 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1700                         swqe->descriptors++;
1701                 }
1702         } else {
1703                 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1704                 swqe->immediate_data_length = skb_data_size;
1705         }
1706 }
1707
1708 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1709                                     struct ehea_swqe *swqe, u32 lkey)
1710 {
1711         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1712         skb_frag_t *frag;
1713         int nfrags, sg1entry_contains_frag_data, i;
1714
1715         nfrags = skb_shinfo(skb)->nr_frags;
1716         sg1entry = &swqe->u.immdata_desc.sg_entry;
1717         sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1718         swqe->descriptors = 0;
1719         sg1entry_contains_frag_data = 0;
1720
1721         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1722                 write_swqe2_TSO(skb, swqe, lkey);
1723         else
1724                 write_swqe2_nonTSO(skb, swqe, lkey);
1725
1726         /* write descriptors */
1727         if (nfrags > 0) {
1728                 if (swqe->descriptors == 0) {
1729                         /* sg1entry not yet used */
1730                         frag = &skb_shinfo(skb)->frags[0];
1731
1732                         /* copy sg1entry data */
1733                         sg1entry->l_key = lkey;
1734                         sg1entry->len = frag->size;
1735                         sg1entry->vaddr =
1736                                 ehea_map_vaddr(page_address(frag->page)
1737                                                + frag->page_offset);
1738                         swqe->descriptors++;
1739                         sg1entry_contains_frag_data = 1;
1740                 }
1741
1742                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1743
1744                         frag = &skb_shinfo(skb)->frags[i];
1745                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1746
1747                         sgentry->l_key = lkey;
1748                         sgentry->len = frag->size;
1749                         sgentry->vaddr =
1750                                 ehea_map_vaddr(page_address(frag->page)
1751                                                + frag->page_offset);
1752                         swqe->descriptors++;
1753                 }
1754         }
1755 }
1756
1757 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1758 {
1759         int ret = 0;
1760         u64 hret;
1761         u8 reg_type;
1762
1763         /* De/Register untagged packets */
1764         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1765         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1766                                      port->logical_port_id,
1767                                      reg_type, port->mac_addr, 0, hcallid);
1768         if (hret != H_SUCCESS) {
1769                 ehea_error("%sregistering bc address failed (tagged)",
1770                            hcallid == H_REG_BCMC ? "" : "de");
1771                 ret = -EIO;
1772                 goto out_herr;
1773         }
1774
1775         /* De/Register VLAN packets */
1776         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1777         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1778                                      port->logical_port_id,
1779                                      reg_type, port->mac_addr, 0, hcallid);
1780         if (hret != H_SUCCESS) {
1781                 ehea_error("%sregistering bc address failed (vlan)",
1782                            hcallid == H_REG_BCMC ? "" : "de");
1783                 ret = -EIO;
1784         }
1785 out_herr:
1786         return ret;
1787 }
1788
1789 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1790 {
1791         struct ehea_port *port = netdev_priv(dev);
1792         struct sockaddr *mac_addr = sa;
1793         struct hcp_ehea_port_cb0 *cb0;
1794         int ret;
1795         u64 hret;
1796
1797         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1798                 ret = -EADDRNOTAVAIL;
1799                 goto out;
1800         }
1801
1802         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1803         if (!cb0) {
1804                 ehea_error("no mem for cb0");
1805                 ret = -ENOMEM;
1806                 goto out;
1807         }
1808
1809         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1810
1811         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1812
1813         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1814                                        port->logical_port_id, H_PORT_CB0,
1815                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1816         if (hret != H_SUCCESS) {
1817                 ret = -EIO;
1818                 goto out_free;
1819         }
1820
1821         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1822
1823         /* Deregister old MAC in pHYP */
1824         if (port->state == EHEA_PORT_UP) {
1825                 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1826                 if (ret)
1827                         goto out_upregs;
1828         }
1829
1830         port->mac_addr = cb0->port_mac_addr << 16;
1831
1832         /* Register new MAC in pHYP */
1833         if (port->state == EHEA_PORT_UP) {
1834                 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1835                 if (ret)
1836                         goto out_upregs;
1837         }
1838
1839         ret = 0;
1840
1841 out_upregs:
1842         ehea_update_bcmc_registrations();
1843 out_free:
1844         free_page((unsigned long)cb0);
1845 out:
1846         return ret;
1847 }
1848
1849 static void ehea_promiscuous_error(u64 hret, int enable)
1850 {
1851         if (hret == H_AUTHORITY)
1852                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1853                           enable == 1 ? "en" : "dis");
1854         else
1855                 ehea_error("failed %sabling promiscuous mode",
1856                            enable == 1 ? "en" : "dis");
1857 }
1858
1859 static void ehea_promiscuous(struct net_device *dev, int enable)
1860 {
1861         struct ehea_port *port = netdev_priv(dev);
1862         struct hcp_ehea_port_cb7 *cb7;
1863         u64 hret;
1864
1865         if ((enable && port->promisc) || (!enable && !port->promisc))
1866                 return;
1867
1868         cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1869         if (!cb7) {
1870                 ehea_error("no mem for cb7");
1871                 goto out;
1872         }
1873
1874         /* Modify Pxs_DUCQPN in CB7 */
1875         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1876
1877         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1878                                        port->logical_port_id,
1879                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1880         if (hret) {
1881                 ehea_promiscuous_error(hret, enable);
1882                 goto out;
1883         }
1884
1885         port->promisc = enable;
1886 out:
1887         free_page((unsigned long)cb7);
1888 }
1889
1890 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1891                                      u32 hcallid)
1892 {
1893         u64 hret;
1894         u8 reg_type;
1895
1896         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1897                  | EHEA_BCMC_UNTAGGED;
1898
1899         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1900                                      port->logical_port_id,
1901                                      reg_type, mc_mac_addr, 0, hcallid);
1902         if (hret)
1903                 goto out;
1904
1905         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1906                  | EHEA_BCMC_VLANID_ALL;
1907
1908         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1909                                      port->logical_port_id,
1910                                      reg_type, mc_mac_addr, 0, hcallid);
1911 out:
1912         return hret;
1913 }
1914
1915 static int ehea_drop_multicast_list(struct net_device *dev)
1916 {
1917         struct ehea_port *port = netdev_priv(dev);
1918         struct ehea_mc_list *mc_entry = port->mc_list;
1919         struct list_head *pos;
1920         struct list_head *temp;
1921         int ret = 0;
1922         u64 hret;
1923
1924         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1925                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1926
1927                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1928                                                  H_DEREG_BCMC);
1929                 if (hret) {
1930                         ehea_error("failed deregistering mcast MAC");
1931                         ret = -EIO;
1932                 }
1933
1934                 list_del(pos);
1935                 kfree(mc_entry);
1936         }
1937         return ret;
1938 }
1939
1940 static void ehea_allmulti(struct net_device *dev, int enable)
1941 {
1942         struct ehea_port *port = netdev_priv(dev);
1943         u64 hret;
1944
1945         if (!port->allmulti) {
1946                 if (enable) {
1947                         /* Enable ALLMULTI */
1948                         ehea_drop_multicast_list(dev);
1949                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1950                         if (!hret)
1951                                 port->allmulti = 1;
1952                         else
1953                                 ehea_error("failed enabling IFF_ALLMULTI");
1954                 }
1955         } else
1956                 if (!enable) {
1957                         /* Disable ALLMULTI */
1958                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1959                         if (!hret)
1960                                 port->allmulti = 0;
1961                         else
1962                                 ehea_error("failed disabling IFF_ALLMULTI");
1963                 }
1964 }
1965
1966 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1967 {
1968         struct ehea_mc_list *ehea_mcl_entry;
1969         u64 hret;
1970
1971         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1972         if (!ehea_mcl_entry) {
1973                 ehea_error("no mem for mcl_entry");
1974                 return;
1975         }
1976
1977         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1978
1979         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1980
1981         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1982                                          H_REG_BCMC);
1983         if (!hret)
1984                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1985         else {
1986                 ehea_error("failed registering mcast MAC");
1987                 kfree(ehea_mcl_entry);
1988         }
1989 }
1990
1991 static void ehea_set_multicast_list(struct net_device *dev)
1992 {
1993         struct ehea_port *port = netdev_priv(dev);
1994         struct netdev_hw_addr *ha;
1995         int ret;
1996
1997         if (dev->flags & IFF_PROMISC) {
1998                 ehea_promiscuous(dev, 1);
1999                 return;
2000         }
2001         ehea_promiscuous(dev, 0);
2002
2003         if (dev->flags & IFF_ALLMULTI) {
2004                 ehea_allmulti(dev, 1);
2005                 goto out;
2006         }
2007         ehea_allmulti(dev, 0);
2008
2009         if (!netdev_mc_empty(dev)) {
2010                 ret = ehea_drop_multicast_list(dev);
2011                 if (ret) {
2012                         /* Dropping the current multicast list failed.
2013                          * Enabling ALL_MULTI is the best we can do.
2014                          */
2015                         ehea_allmulti(dev, 1);
2016                 }
2017
2018                 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
2019                         ehea_info("Mcast registration limit reached (0x%llx). "
2020                                   "Use ALLMULTI!",
2021                                   port->adapter->max_mc_mac);
2022                         goto out;
2023                 }
2024
2025                 netdev_for_each_mc_addr(ha, dev)
2026                         ehea_add_multicast_entry(port, ha->addr);
2027
2028         }
2029 out:
2030         ehea_update_bcmc_registrations();
2031 }
2032
2033 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2034 {
2035         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2036                 return -EINVAL;
2037         dev->mtu = new_mtu;
2038         return 0;
2039 }
2040
2041 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2042                        struct ehea_swqe *swqe, u32 lkey)
2043 {
2044         if (skb->protocol == htons(ETH_P_IP)) {
2045                 const struct iphdr *iph = ip_hdr(skb);
2046
2047                 /* IPv4 */
2048                 swqe->tx_control |= EHEA_SWQE_CRC
2049                                  | EHEA_SWQE_IP_CHECKSUM
2050                                  | EHEA_SWQE_TCP_CHECKSUM
2051                                  | EHEA_SWQE_IMM_DATA_PRESENT
2052                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2053
2054                 write_ip_start_end(swqe, skb);
2055
2056                 if (iph->protocol == IPPROTO_UDP) {
2057                         if ((iph->frag_off & IP_MF) ||
2058                             (iph->frag_off & IP_OFFSET))
2059                                 /* IP fragment, so don't change cs */
2060                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2061                         else
2062                                 write_udp_offset_end(swqe, skb);
2063                 } else if (iph->protocol == IPPROTO_TCP) {
2064                         write_tcp_offset_end(swqe, skb);
2065                 }
2066
2067                 /* icmp (big data) and ip segmentation packets (all other ip
2068                    packets) do not require any special handling */
2069
2070         } else {
2071                 /* Other Ethernet Protocol */
2072                 swqe->tx_control |= EHEA_SWQE_CRC
2073                                  | EHEA_SWQE_IMM_DATA_PRESENT
2074                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2075         }
2076
2077         write_swqe2_data(skb, dev, swqe, lkey);
2078 }
2079
2080 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2081                        struct ehea_swqe *swqe)
2082 {
2083         int nfrags = skb_shinfo(skb)->nr_frags;
2084         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2085         skb_frag_t *frag;
2086         int i;
2087
2088         if (skb->protocol == htons(ETH_P_IP)) {
2089                 const struct iphdr *iph = ip_hdr(skb);
2090
2091                 /* IPv4 */
2092                 write_ip_start_end(swqe, skb);
2093
2094                 if (iph->protocol == IPPROTO_TCP) {
2095                         swqe->tx_control |= EHEA_SWQE_CRC
2096                                          | EHEA_SWQE_IP_CHECKSUM
2097                                          | EHEA_SWQE_TCP_CHECKSUM
2098                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2099
2100                         write_tcp_offset_end(swqe, skb);
2101
2102                 } else if (iph->protocol == IPPROTO_UDP) {
2103                         if ((iph->frag_off & IP_MF) ||
2104                             (iph->frag_off & IP_OFFSET))
2105                                 /* IP fragment, so don't change cs */
2106                                 swqe->tx_control |= EHEA_SWQE_CRC
2107                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2108                         else {
2109                                 swqe->tx_control |= EHEA_SWQE_CRC
2110                                                  | EHEA_SWQE_IP_CHECKSUM
2111                                                  | EHEA_SWQE_TCP_CHECKSUM
2112                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2113
2114                                 write_udp_offset_end(swqe, skb);
2115                         }
2116                 } else {
2117                         /* icmp (big data) and
2118                            ip segmentation packets (all other ip packets) */
2119                         swqe->tx_control |= EHEA_SWQE_CRC
2120                                          | EHEA_SWQE_IP_CHECKSUM
2121                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2122                 }
2123         } else {
2124                 /* Other Ethernet Protocol */
2125                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2126         }
2127         /* copy (immediate) data */
2128         if (nfrags == 0) {
2129                 /* data is in a single piece */
2130                 skb_copy_from_linear_data(skb, imm_data, skb->len);
2131         } else {
2132                 /* first copy data from the skb->data buffer ... */
2133                 skb_copy_from_linear_data(skb, imm_data,
2134                                           skb_headlen(skb));
2135                 imm_data += skb_headlen(skb);
2136
2137                 /* ... then copy data from the fragments */
2138                 for (i = 0; i < nfrags; i++) {
2139                         frag = &skb_shinfo(skb)->frags[i];
2140                         memcpy(imm_data,
2141                                page_address(frag->page) + frag->page_offset,
2142                                frag->size);
2143                         imm_data += frag->size;
2144                 }
2145         }
2146         swqe->immediate_data_length = skb->len;
2147         dev_kfree_skb(skb);
2148 }
2149
2150 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2151 {
2152         struct tcphdr *tcp;
2153         u32 tmp;
2154
2155         if ((skb->protocol == htons(ETH_P_IP)) &&
2156             (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2157                 tcp = (struct tcphdr *)(skb_network_header(skb) +
2158                                         (ip_hdr(skb)->ihl * 4));
2159                 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2160                 tmp += ip_hdr(skb)->daddr % 31;
2161                 return tmp % num_qps;
2162         } else
2163                 return 0;
2164 }
2165
2166 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2167 {
2168         struct ehea_port *port = netdev_priv(dev);
2169         struct ehea_swqe *swqe;
2170         unsigned long flags;
2171         u32 lkey;
2172         int swqe_index;
2173         struct ehea_port_res *pr;
2174
2175         pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2176
2177         if (!spin_trylock(&pr->xmit_lock))
2178                 return NETDEV_TX_BUSY;
2179
2180         if (pr->queue_stopped) {
2181                 spin_unlock(&pr->xmit_lock);
2182                 return NETDEV_TX_BUSY;
2183         }
2184
2185         swqe = ehea_get_swqe(pr->qp, &swqe_index);
2186         memset(swqe, 0, SWQE_HEADER_SIZE);
2187         atomic_dec(&pr->swqe_avail);
2188
2189         if (skb->len <= SWQE3_MAX_IMM) {
2190                 u32 sig_iv = port->sig_comp_iv;
2191                 u32 swqe_num = pr->swqe_id_counter;
2192                 ehea_xmit3(skb, dev, swqe);
2193                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2194                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2195                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2196                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2197                                                       sig_iv);
2198                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2199                         pr->swqe_ll_count = 0;
2200                 } else
2201                         pr->swqe_ll_count += 1;
2202         } else {
2203                 swqe->wr_id =
2204                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2205                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2206                       | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2207                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2208                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2209
2210                 pr->sq_skba.index++;
2211                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2212
2213                 lkey = pr->send_mr.lkey;
2214                 ehea_xmit2(skb, dev, swqe, lkey);
2215                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2216         }
2217         pr->swqe_id_counter += 1;
2218
2219         if (port->vgrp && vlan_tx_tag_present(skb)) {
2220                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2221                 swqe->vlan_tag = vlan_tx_tag_get(skb);
2222         }
2223
2224         if (netif_msg_tx_queued(port)) {
2225                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2226                 ehea_dump(swqe, 512, "swqe");
2227         }
2228
2229         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2230                 netif_stop_queue(dev);
2231                 swqe->tx_control |= EHEA_SWQE_PURGE;
2232         }
2233
2234         ehea_post_swqe(pr->qp, swqe);
2235         pr->tx_packets++;
2236
2237         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2238                 spin_lock_irqsave(&pr->netif_queue, flags);
2239                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2240                         pr->p_stats.queue_stopped++;
2241                         netif_stop_queue(dev);
2242                         pr->queue_stopped = 1;
2243                 }
2244                 spin_unlock_irqrestore(&pr->netif_queue, flags);
2245         }
2246         dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
2247         spin_unlock(&pr->xmit_lock);
2248
2249         return NETDEV_TX_OK;
2250 }
2251
2252 static void ehea_vlan_rx_register(struct net_device *dev,
2253                                   struct vlan_group *grp)
2254 {
2255         struct ehea_port *port = netdev_priv(dev);
2256         struct ehea_adapter *adapter = port->adapter;
2257         struct hcp_ehea_port_cb1 *cb1;
2258         u64 hret;
2259
2260         port->vgrp = grp;
2261
2262         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2263         if (!cb1) {
2264                 ehea_error("no mem for cb1");
2265                 goto out;
2266         }
2267
2268         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2269                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2270         if (hret != H_SUCCESS)
2271                 ehea_error("modify_ehea_port failed");
2272
2273         free_page((unsigned long)cb1);
2274 out:
2275         return;
2276 }
2277
2278 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2279 {
2280         struct ehea_port *port = netdev_priv(dev);
2281         struct ehea_adapter *adapter = port->adapter;
2282         struct hcp_ehea_port_cb1 *cb1;
2283         int index;
2284         u64 hret;
2285
2286         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2287         if (!cb1) {
2288                 ehea_error("no mem for cb1");
2289                 goto out;
2290         }
2291
2292         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2293                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2294         if (hret != H_SUCCESS) {
2295                 ehea_error("query_ehea_port failed");
2296                 goto out;
2297         }
2298
2299         index = (vid / 64);
2300         cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2301
2302         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2303                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2304         if (hret != H_SUCCESS)
2305                 ehea_error("modify_ehea_port failed");
2306 out:
2307         free_page((unsigned long)cb1);
2308         return;
2309 }
2310
2311 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2312 {
2313         struct ehea_port *port = netdev_priv(dev);
2314         struct ehea_adapter *adapter = port->adapter;
2315         struct hcp_ehea_port_cb1 *cb1;
2316         int index;
2317         u64 hret;
2318
2319         vlan_group_set_device(port->vgrp, vid, NULL);
2320
2321         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2322         if (!cb1) {
2323                 ehea_error("no mem for cb1");
2324                 goto out;
2325         }
2326
2327         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2328                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2329         if (hret != H_SUCCESS) {
2330                 ehea_error("query_ehea_port failed");
2331                 goto out;
2332         }
2333
2334         index = (vid / 64);
2335         cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2336
2337         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2338                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2339         if (hret != H_SUCCESS)
2340                 ehea_error("modify_ehea_port failed");
2341 out:
2342         free_page((unsigned long)cb1);
2343 }
2344
2345 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2346 {
2347         int ret = -EIO;
2348         u64 hret;
2349         u16 dummy16 = 0;
2350         u64 dummy64 = 0;
2351         struct hcp_modify_qp_cb0 *cb0;
2352
2353         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2354         if (!cb0) {
2355                 ret = -ENOMEM;
2356                 goto out;
2357         }
2358
2359         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2360                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2361         if (hret != H_SUCCESS) {
2362                 ehea_error("query_ehea_qp failed (1)");
2363                 goto out;
2364         }
2365
2366         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2367         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2368                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2369                                      &dummy64, &dummy64, &dummy16, &dummy16);
2370         if (hret != H_SUCCESS) {
2371                 ehea_error("modify_ehea_qp failed (1)");
2372                 goto out;
2373         }
2374
2375         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2376                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2377         if (hret != H_SUCCESS) {
2378                 ehea_error("query_ehea_qp failed (2)");
2379                 goto out;
2380         }
2381
2382         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2383         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2384                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2385                                      &dummy64, &dummy64, &dummy16, &dummy16);
2386         if (hret != H_SUCCESS) {
2387                 ehea_error("modify_ehea_qp failed (2)");
2388                 goto out;
2389         }
2390
2391         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2392                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2393         if (hret != H_SUCCESS) {
2394                 ehea_error("query_ehea_qp failed (3)");
2395                 goto out;
2396         }
2397
2398         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2399         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2400                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2401                                      &dummy64, &dummy64, &dummy16, &dummy16);
2402         if (hret != H_SUCCESS) {
2403                 ehea_error("modify_ehea_qp failed (3)");
2404                 goto out;
2405         }
2406
2407         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2408                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2409         if (hret != H_SUCCESS) {
2410                 ehea_error("query_ehea_qp failed (4)");
2411                 goto out;
2412         }
2413
2414         ret = 0;
2415 out:
2416         free_page((unsigned long)cb0);
2417         return ret;
2418 }
2419
2420 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2421                                int add_tx_qps)
2422 {
2423         int ret, i;
2424         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2425         enum ehea_eq_type eq_type = EHEA_EQ;
2426
2427         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2428                                    EHEA_MAX_ENTRIES_EQ, 1);
2429         if (!port->qp_eq) {
2430                 ret = -EINVAL;
2431                 ehea_error("ehea_create_eq failed (qp_eq)");
2432                 goto out_kill_eq;
2433         }
2434
2435         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2436         pr_cfg.max_entries_scq = sq_entries * 2;
2437         pr_cfg.max_entries_sq = sq_entries;
2438         pr_cfg.max_entries_rq1 = rq1_entries;
2439         pr_cfg.max_entries_rq2 = rq2_entries;
2440         pr_cfg.max_entries_rq3 = rq3_entries;
2441
2442         pr_cfg_small_rx.max_entries_rcq = 1;
2443         pr_cfg_small_rx.max_entries_scq = sq_entries;
2444         pr_cfg_small_rx.max_entries_sq = sq_entries;
2445         pr_cfg_small_rx.max_entries_rq1 = 1;
2446         pr_cfg_small_rx.max_entries_rq2 = 1;
2447         pr_cfg_small_rx.max_entries_rq3 = 1;
2448
2449         for (i = 0; i < def_qps; i++) {
2450                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2451                 if (ret)
2452                         goto out_clean_pr;
2453         }
2454         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2455                 ret = ehea_init_port_res(port, &port->port_res[i],
2456                                          &pr_cfg_small_rx, i);
2457                 if (ret)
2458                         goto out_clean_pr;
2459         }
2460
2461         return 0;
2462
2463 out_clean_pr:
2464         while (--i >= 0)
2465                 ehea_clean_portres(port, &port->port_res[i]);
2466
2467 out_kill_eq:
2468         ehea_destroy_eq(port->qp_eq);
2469         return ret;
2470 }
2471
2472 static int ehea_clean_all_portres(struct ehea_port *port)
2473 {
2474         int ret = 0;
2475         int i;
2476
2477         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2478                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2479
2480         ret |= ehea_destroy_eq(port->qp_eq);
2481
2482         return ret;
2483 }
2484
2485 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2486 {
2487         if (adapter->active_ports)
2488                 return;
2489
2490         ehea_rem_mr(&adapter->mr);
2491 }
2492
2493 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2494 {
2495         if (adapter->active_ports)
2496                 return 0;
2497
2498         return ehea_reg_kernel_mr(adapter, &adapter->mr);
2499 }
2500
2501 static int ehea_up(struct net_device *dev)
2502 {
2503         int ret, i;
2504         struct ehea_port *port = netdev_priv(dev);
2505
2506         if (port->state == EHEA_PORT_UP)
2507                 return 0;
2508
2509         ret = ehea_port_res_setup(port, port->num_def_qps,
2510                                   port->num_add_tx_qps);
2511         if (ret) {
2512                 ehea_error("port_res_failed");
2513                 goto out;
2514         }
2515
2516         /* Set default QP for this port */
2517         ret = ehea_configure_port(port);
2518         if (ret) {
2519                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2520                 goto out_clean_pr;
2521         }
2522
2523         ret = ehea_reg_interrupts(dev);
2524         if (ret) {
2525                 ehea_error("reg_interrupts failed. ret:%d", ret);
2526                 goto out_clean_pr;
2527         }
2528
2529         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2530                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2531                 if (ret) {
2532                         ehea_error("activate_qp failed");
2533                         goto out_free_irqs;
2534                 }
2535         }
2536
2537         for (i = 0; i < port->num_def_qps; i++) {
2538                 ret = ehea_fill_port_res(&port->port_res[i]);
2539                 if (ret) {
2540                         ehea_error("out_free_irqs");
2541                         goto out_free_irqs;
2542                 }
2543         }
2544
2545         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2546         if (ret) {
2547                 ret = -EIO;
2548                 goto out_free_irqs;
2549         }
2550
2551         port->state = EHEA_PORT_UP;
2552
2553         ret = 0;
2554         goto out;
2555
2556 out_free_irqs:
2557         ehea_free_interrupts(dev);
2558
2559 out_clean_pr:
2560         ehea_clean_all_portres(port);
2561 out:
2562         if (ret)
2563                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2564
2565         ehea_update_bcmc_registrations();
2566         ehea_update_firmware_handles();
2567
2568         return ret;
2569 }
2570
2571 static void port_napi_disable(struct ehea_port *port)
2572 {
2573         int i;
2574
2575         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2576                 napi_disable(&port->port_res[i].napi);
2577 }
2578
2579 static void port_napi_enable(struct ehea_port *port)
2580 {
2581         int i;
2582
2583         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2584                 napi_enable(&port->port_res[i].napi);
2585 }
2586
2587 static int ehea_open(struct net_device *dev)
2588 {
2589         int ret;
2590         struct ehea_port *port = netdev_priv(dev);
2591
2592         mutex_lock(&port->port_lock);
2593
2594         if (netif_msg_ifup(port))
2595                 ehea_info("enabling port %s", dev->name);
2596
2597         ret = ehea_up(dev);
2598         if (!ret) {
2599                 port_napi_enable(port);
2600                 netif_start_queue(dev);
2601         }
2602
2603         mutex_unlock(&port->port_lock);
2604
2605         return ret;
2606 }
2607
2608 static int ehea_down(struct net_device *dev)
2609 {
2610         int ret;
2611         struct ehea_port *port = netdev_priv(dev);
2612
2613         if (port->state == EHEA_PORT_DOWN)
2614                 return 0;
2615
2616         ehea_drop_multicast_list(dev);
2617         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2618
2619         ehea_free_interrupts(dev);
2620
2621         port->state = EHEA_PORT_DOWN;
2622
2623         ehea_update_bcmc_registrations();
2624
2625         ret = ehea_clean_all_portres(port);
2626         if (ret)
2627                 ehea_info("Failed freeing resources for %s. ret=%i",
2628                           dev->name, ret);
2629
2630         ehea_update_firmware_handles();
2631
2632         return ret;
2633 }
2634
2635 static int ehea_stop(struct net_device *dev)
2636 {
2637         int ret;
2638         struct ehea_port *port = netdev_priv(dev);
2639
2640         if (netif_msg_ifdown(port))
2641                 ehea_info("disabling port %s", dev->name);
2642
2643         set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2644         cancel_work_sync(&port->reset_task);
2645         mutex_lock(&port->port_lock);
2646         netif_stop_queue(dev);
2647         port_napi_disable(port);
2648         ret = ehea_down(dev);
2649         mutex_unlock(&port->port_lock);
2650         clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2651         return ret;
2652 }
2653
2654 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2655 {
2656         struct ehea_qp qp = *orig_qp;
2657         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2658         struct ehea_swqe *swqe;
2659         int wqe_index;
2660         int i;
2661
2662         for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2663                 swqe = ehea_get_swqe(&qp, &wqe_index);
2664                 swqe->tx_control |= EHEA_SWQE_PURGE;
2665         }
2666 }
2667
2668 static void ehea_flush_sq(struct ehea_port *port)
2669 {
2670         int i;
2671
2672         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2673                 struct ehea_port_res *pr = &port->port_res[i];
2674                 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2675                 int k = 0;
2676                 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2677                         msleep(5);
2678                         if (++k == 20)
2679                                 break;
2680                 }
2681         }
2682 }
2683
2684 int ehea_stop_qps(struct net_device *dev)
2685 {
2686         struct ehea_port *port = netdev_priv(dev);
2687         struct ehea_adapter *adapter = port->adapter;
2688         struct hcp_modify_qp_cb0 *cb0;
2689         int ret = -EIO;
2690         int dret;
2691         int i;
2692         u64 hret;
2693         u64 dummy64 = 0;
2694         u16 dummy16 = 0;
2695
2696         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2697         if (!cb0) {
2698                 ret = -ENOMEM;
2699                 goto out;
2700         }
2701
2702         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2703                 struct ehea_port_res *pr =  &port->port_res[i];
2704                 struct ehea_qp *qp = pr->qp;
2705
2706                 /* Purge send queue */
2707                 ehea_purge_sq(qp);
2708
2709                 /* Disable queue pair */
2710                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2711                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2712                                             cb0);
2713                 if (hret != H_SUCCESS) {
2714                         ehea_error("query_ehea_qp failed (1)");
2715                         goto out;
2716                 }
2717
2718                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2719                 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2720
2721                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2722                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2723                                                             1), cb0, &dummy64,
2724                                              &dummy64, &dummy16, &dummy16);
2725                 if (hret != H_SUCCESS) {
2726                         ehea_error("modify_ehea_qp failed (1)");
2727                         goto out;
2728                 }
2729
2730                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2731                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2732                                             cb0);
2733                 if (hret != H_SUCCESS) {
2734                         ehea_error("query_ehea_qp failed (2)");
2735                         goto out;
2736                 }
2737
2738                 /* deregister shared memory regions */
2739                 dret = ehea_rem_smrs(pr);
2740                 if (dret) {
2741                         ehea_error("unreg shared memory region failed");
2742                         goto out;
2743                 }
2744         }
2745
2746         ret = 0;
2747 out:
2748         free_page((unsigned long)cb0);
2749
2750         return ret;
2751 }
2752
2753 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2754 {
2755         struct ehea_qp qp = *orig_qp;
2756         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2757         struct ehea_rwqe *rwqe;
2758         struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2759         struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2760         struct sk_buff *skb;
2761         u32 lkey = pr->recv_mr.lkey;
2762
2763
2764         int i;
2765         int index;
2766
2767         for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2768                 rwqe = ehea_get_next_rwqe(&qp, 2);
2769                 rwqe->sg_list[0].l_key = lkey;
2770                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2771                 skb = skba_rq2[index];
2772                 if (skb)
2773                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2774         }
2775
2776         for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2777                 rwqe = ehea_get_next_rwqe(&qp, 3);
2778                 rwqe->sg_list[0].l_key = lkey;
2779                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2780                 skb = skba_rq3[index];
2781                 if (skb)
2782                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2783         }
2784 }
2785
2786 int ehea_restart_qps(struct net_device *dev)
2787 {
2788         struct ehea_port *port = netdev_priv(dev);
2789         struct ehea_adapter *adapter = port->adapter;
2790         int ret = 0;
2791         int i;
2792
2793         struct hcp_modify_qp_cb0 *cb0;
2794         u64 hret;
2795         u64 dummy64 = 0;
2796         u16 dummy16 = 0;
2797
2798         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2799         if (!cb0) {
2800                 ret = -ENOMEM;
2801                 goto out;
2802         }
2803
2804         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2805                 struct ehea_port_res *pr =  &port->port_res[i];
2806                 struct ehea_qp *qp = pr->qp;
2807
2808                 ret = ehea_gen_smrs(pr);
2809                 if (ret) {
2810                         ehea_error("creation of shared memory regions failed");
2811                         goto out;
2812                 }
2813
2814                 ehea_update_rqs(qp, pr);
2815
2816                 /* Enable queue pair */
2817                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2818                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2819                                             cb0);
2820                 if (hret != H_SUCCESS) {
2821                         ehea_error("query_ehea_qp failed (1)");
2822                         goto out;
2823                 }
2824
2825                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2826                 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2827
2828                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2829                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2830                                                             1), cb0, &dummy64,
2831                                              &dummy64, &dummy16, &dummy16);
2832                 if (hret != H_SUCCESS) {
2833                         ehea_error("modify_ehea_qp failed (1)");
2834                         goto out;
2835                 }
2836
2837                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2838                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2839                                             cb0);
2840                 if (hret != H_SUCCESS) {
2841                         ehea_error("query_ehea_qp failed (2)");
2842                         goto out;
2843                 }
2844
2845                 /* refill entire queue */
2846                 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2847                 ehea_refill_rq2(pr, 0);
2848                 ehea_refill_rq3(pr, 0);
2849         }
2850 out:
2851         free_page((unsigned long)cb0);
2852
2853         return ret;
2854 }
2855
2856 static void ehea_reset_port(struct work_struct *work)
2857 {
2858         int ret;
2859         struct ehea_port *port =
2860                 container_of(work, struct ehea_port, reset_task);
2861         struct net_device *dev = port->netdev;
2862
2863         mutex_lock(&dlpar_mem_lock);
2864         port->resets++;
2865         mutex_lock(&port->port_lock);
2866         netif_stop_queue(dev);
2867
2868         port_napi_disable(port);
2869
2870         ehea_down(dev);
2871
2872         ret = ehea_up(dev);
2873         if (ret)
2874                 goto out;
2875
2876         ehea_set_multicast_list(dev);
2877
2878         if (netif_msg_timer(port))
2879                 ehea_info("Device %s resetted successfully", dev->name);
2880
2881         port_napi_enable(port);
2882
2883         netif_wake_queue(dev);
2884 out:
2885         mutex_unlock(&port->port_lock);
2886         mutex_unlock(&dlpar_mem_lock);
2887 }
2888
2889 static void ehea_rereg_mrs(struct work_struct *work)
2890 {
2891         int ret, i;
2892         struct ehea_adapter *adapter;
2893
2894         ehea_info("LPAR memory changed - re-initializing driver");
2895
2896         list_for_each_entry(adapter, &adapter_list, list)
2897                 if (adapter->active_ports) {
2898                         /* Shutdown all ports */
2899                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2900                                 struct ehea_port *port = adapter->port[i];
2901                                 struct net_device *dev;
2902
2903                                 if (!port)
2904                                         continue;
2905
2906                                 dev = port->netdev;
2907
2908                                 if (dev->flags & IFF_UP) {
2909                                         mutex_lock(&port->port_lock);
2910                                         netif_stop_queue(dev);
2911                                         ehea_flush_sq(port);
2912                                         ret = ehea_stop_qps(dev);
2913                                         if (ret) {
2914                                                 mutex_unlock(&port->port_lock);
2915                                                 goto out;
2916                                         }
2917                                         port_napi_disable(port);
2918                                         mutex_unlock(&port->port_lock);
2919                                 }
2920                         }
2921
2922                         /* Unregister old memory region */
2923                         ret = ehea_rem_mr(&adapter->mr);
2924                         if (ret) {
2925                                 ehea_error("unregister MR failed - driver"
2926                                            " inoperable!");
2927                                 goto out;
2928                         }
2929                 }
2930
2931         clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2932
2933         list_for_each_entry(adapter, &adapter_list, list)
2934                 if (adapter->active_ports) {
2935                         /* Register new memory region */
2936                         ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2937                         if (ret) {
2938                                 ehea_error("register MR failed - driver"
2939                                            " inoperable!");
2940                                 goto out;
2941                         }
2942
2943                         /* Restart all ports */
2944                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2945                                 struct ehea_port *port = adapter->port[i];
2946
2947                                 if (port) {
2948                                         struct net_device *dev = port->netdev;
2949
2950                                         if (dev->flags & IFF_UP) {
2951                                                 mutex_lock(&port->port_lock);
2952                                                 port_napi_enable(port);
2953                                                 ret = ehea_restart_qps(dev);
2954                                                 if (!ret)
2955                                                         netif_wake_queue(dev);
2956                                                 mutex_unlock(&port->port_lock);
2957                                         }
2958                                 }
2959                         }
2960                 }
2961         ehea_info("re-initializing driver complete");
2962 out:
2963         return;
2964 }
2965
2966 static void ehea_tx_watchdog(struct net_device *dev)
2967 {
2968         struct ehea_port *port = netdev_priv(dev);
2969
2970         if (netif_carrier_ok(dev) &&
2971             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2972                 ehea_schedule_port_reset(port);
2973 }
2974
2975 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2976 {
2977         struct hcp_query_ehea *cb;
2978         u64 hret;
2979         int ret;
2980
2981         cb = (void *)get_zeroed_page(GFP_KERNEL);
2982         if (!cb) {
2983                 ret = -ENOMEM;
2984                 goto out;
2985         }
2986
2987         hret = ehea_h_query_ehea(adapter->handle, cb);
2988
2989         if (hret != H_SUCCESS) {
2990                 ret = -EIO;
2991                 goto out_herr;
2992         }
2993
2994         adapter->max_mc_mac = cb->max_mc_mac - 1;
2995         ret = 0;
2996
2997 out_herr:
2998         free_page((unsigned long)cb);
2999 out:
3000         return ret;
3001 }
3002
3003 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
3004 {
3005         struct hcp_ehea_port_cb4 *cb4;
3006         u64 hret;
3007         int ret = 0;
3008
3009         *jumbo = 0;
3010
3011         /* (Try to) enable *jumbo frames */
3012         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
3013         if (!cb4) {
3014                 ehea_error("no mem for cb4");
3015                 ret = -ENOMEM;
3016                 goto out;
3017         } else {
3018                 hret = ehea_h_query_ehea_port(port->adapter->handle,
3019                                               port->logical_port_id,
3020                                               H_PORT_CB4,
3021                                               H_PORT_CB4_JUMBO, cb4);
3022                 if (hret == H_SUCCESS) {
3023                         if (cb4->jumbo_frame)
3024                                 *jumbo = 1;
3025                         else {
3026                                 cb4->jumbo_frame = 1;
3027                                 hret = ehea_h_modify_ehea_port(port->adapter->
3028                                                                handle,
3029                                                                port->
3030                                                                logical_port_id,
3031                                                                H_PORT_CB4,
3032                                                                H_PORT_CB4_JUMBO,
3033                                                                cb4);
3034                                 if (hret == H_SUCCESS)
3035                                         *jumbo = 1;
3036                         }
3037                 } else
3038                         ret = -EINVAL;
3039
3040                 free_page((unsigned long)cb4);
3041         }
3042 out:
3043         return ret;
3044 }
3045
3046 static ssize_t ehea_show_port_id(struct device *dev,
3047                                  struct device_attribute *attr, char *buf)
3048 {
3049         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3050         return sprintf(buf, "%d", port->logical_port_id);
3051 }
3052
3053 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3054                    NULL);
3055
3056 static void __devinit logical_port_release(struct device *dev)
3057 {
3058         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3059         of_node_put(port->ofdev.dev.of_node);
3060 }
3061
3062 static struct device *ehea_register_port(struct ehea_port *port,
3063                                          struct device_node *dn)
3064 {
3065         int ret;
3066
3067         port->ofdev.dev.of_node = of_node_get(dn);
3068         port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3069         port->ofdev.dev.bus = &ibmebus_bus_type;
3070
3071         dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3072         port->ofdev.dev.release = logical_port_release;
3073
3074         ret = of_device_register(&port->ofdev);
3075         if (ret) {
3076                 ehea_error("failed to register device. ret=%d", ret);
3077                 goto out;
3078         }
3079
3080         ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3081         if (ret) {
3082                 ehea_error("failed to register attributes, ret=%d", ret);
3083                 goto out_unreg_of_dev;
3084         }
3085
3086         return &port->ofdev.dev;
3087
3088 out_unreg_of_dev:
3089         of_device_unregister(&port->ofdev);
3090 out:
3091         return NULL;
3092 }
3093
3094 static void ehea_unregister_port(struct ehea_port *port)
3095 {
3096         device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3097         of_device_unregister(&port->ofdev);
3098 }
3099
3100 static const struct net_device_ops ehea_netdev_ops = {
3101         .ndo_open               = ehea_open,
3102         .ndo_stop               = ehea_stop,
3103         .ndo_start_xmit         = ehea_start_xmit,
3104 #ifdef CONFIG_NET_POLL_CONTROLLER
3105         .ndo_poll_controller    = ehea_netpoll,
3106 #endif
3107         .ndo_get_stats          = ehea_get_stats,
3108         .ndo_set_mac_address    = ehea_set_mac_addr,
3109         .ndo_validate_addr      = eth_validate_addr,
3110         .ndo_set_multicast_list = ehea_set_multicast_list,
3111         .ndo_change_mtu         = ehea_change_mtu,
3112         .ndo_vlan_rx_register   = ehea_vlan_rx_register,
3113         .ndo_vlan_rx_add_vid    = ehea_vlan_rx_add_vid,
3114         .ndo_vlan_rx_kill_vid   = ehea_vlan_rx_kill_vid,
3115         .ndo_tx_timeout         = ehea_tx_watchdog,
3116 };
3117
3118 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3119                                          u32 logical_port_id,
3120                                          struct device_node *dn)
3121 {
3122         int ret;
3123         struct net_device *dev;
3124         struct ehea_port *port;
3125         struct device *port_dev;
3126         int jumbo;
3127
3128         /* allocate memory for the port structures */
3129         dev = alloc_etherdev(sizeof(struct ehea_port));
3130
3131         if (!dev) {
3132                 ehea_error("no mem for net_device");
3133                 ret = -ENOMEM;
3134                 goto out_err;
3135         }
3136
3137         port = netdev_priv(dev);
3138
3139         mutex_init(&port->port_lock);
3140         port->state = EHEA_PORT_DOWN;
3141         port->sig_comp_iv = sq_entries / 10;
3142
3143         port->adapter = adapter;
3144         port->netdev = dev;
3145         port->logical_port_id = logical_port_id;
3146
3147         port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3148
3149         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3150         if (!port->mc_list) {
3151                 ret = -ENOMEM;
3152                 goto out_free_ethdev;
3153         }
3154
3155         INIT_LIST_HEAD(&port->mc_list->list);
3156
3157         ret = ehea_sense_port_attr(port);
3158         if (ret)
3159                 goto out_free_mc_list;
3160
3161         port_dev = ehea_register_port(port, dn);
3162         if (!port_dev)
3163                 goto out_free_mc_list;
3164
3165         SET_NETDEV_DEV(dev, port_dev);
3166
3167         /* initialize net_device structure */
3168         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3169
3170         dev->netdev_ops = &ehea_netdev_ops;
3171         ehea_set_ethtool_ops(dev);
3172
3173         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3174                       | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3175                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3176                       | NETIF_F_LLTX;
3177         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3178
3179         INIT_WORK(&port->reset_task, ehea_reset_port);
3180
3181         ret = register_netdev(dev);
3182         if (ret) {
3183                 ehea_error("register_netdev failed. ret=%d", ret);
3184                 goto out_unreg_port;
3185         }
3186
3187         port->lro_max_aggr = lro_max_aggr;
3188
3189         ret = ehea_get_jumboframe_status(port, &jumbo);
3190         if (ret)
3191                 ehea_error("failed determining jumbo frame status for %s",
3192                            port->netdev->name);
3193
3194         ehea_info("%s: Jumbo frames are %sabled", dev->name,
3195                   jumbo == 1 ? "en" : "dis");
3196
3197         adapter->active_ports++;
3198
3199         return port;
3200
3201 out_unreg_port:
3202         ehea_unregister_port(port);
3203
3204 out_free_mc_list:
3205         kfree(port->mc_list);
3206
3207 out_free_ethdev:
3208         free_netdev(dev);
3209
3210 out_err:
3211         ehea_error("setting up logical port with id=%d failed, ret=%d",
3212                    logical_port_id, ret);
3213         return NULL;
3214 }
3215
3216 static void ehea_shutdown_single_port(struct ehea_port *port)
3217 {
3218         struct ehea_adapter *adapter = port->adapter;
3219         unregister_netdev(port->netdev);
3220         ehea_unregister_port(port);
3221         kfree(port->mc_list);
3222         free_netdev(port->netdev);
3223         adapter->active_ports--;
3224 }
3225
3226 static int ehea_setup_ports(struct ehea_adapter *adapter)
3227 {
3228         struct device_node *lhea_dn;
3229         struct device_node *eth_dn = NULL;
3230
3231         const u32 *dn_log_port_id;
3232         int i = 0;
3233
3234         lhea_dn = adapter->ofdev->dev.of_node;
3235         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3236
3237                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3238                                                  NULL);
3239                 if (!dn_log_port_id) {
3240                         ehea_error("bad device node: eth_dn name=%s",
3241                                    eth_dn->full_name);
3242                         continue;
3243                 }
3244
3245                 if (ehea_add_adapter_mr(adapter)) {
3246                         ehea_error("creating MR failed");
3247                         of_node_put(eth_dn);
3248                         return -EIO;
3249                 }
3250
3251                 adapter->port[i] = ehea_setup_single_port(adapter,
3252                                                           *dn_log_port_id,
3253                                                           eth_dn);
3254                 if (adapter->port[i])
3255                         ehea_info("%s -> logical port id #%d",
3256                                   adapter->port[i]->netdev->name,
3257                                   *dn_log_port_id);
3258                 else
3259                         ehea_remove_adapter_mr(adapter);
3260
3261                 i++;
3262         }
3263         return 0;
3264 }
3265
3266 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3267                                            u32 logical_port_id)
3268 {
3269         struct device_node *lhea_dn;
3270         struct device_node *eth_dn = NULL;
3271         const u32 *dn_log_port_id;
3272
3273         lhea_dn = adapter->ofdev->dev.of_node;
3274         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3275
3276                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3277                                                  NULL);
3278                 if (dn_log_port_id)
3279                         if (*dn_log_port_id == logical_port_id)
3280                                 return eth_dn;
3281         }
3282
3283         return NULL;
3284 }
3285
3286 static ssize_t ehea_probe_port(struct device *dev,
3287                                struct device_attribute *attr,
3288                                const char *buf, size_t count)
3289 {
3290         struct ehea_adapter *adapter = dev_get_drvdata(dev);
3291         struct ehea_port *port;
3292         struct device_node *eth_dn = NULL;
3293         int i;
3294
3295         u32 logical_port_id;
3296
3297         sscanf(buf, "%d", &logical_port_id);
3298
3299         port = ehea_get_port(adapter, logical_port_id);
3300
3301         if (port) {
3302                 ehea_info("adding port with logical port id=%d failed. port "
3303                           "already configured as %s.", logical_port_id,
3304                           port->netdev->name);
3305                 return -EINVAL;
3306         }
3307
3308         eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3309
3310         if (!eth_dn) {
3311                 ehea_info("no logical port with id %d found", logical_port_id);
3312                 return -EINVAL;
3313         }
3314
3315         if (ehea_add_adapter_mr(adapter)) {
3316                 ehea_error("creating MR failed");
3317                 return -EIO;
3318         }
3319
3320         port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3321
3322         of_node_put(eth_dn);
3323
3324         if (port) {
3325                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3326                         if (!adapter->port[i]) {
3327                                 adapter->port[i] = port;
3328                                 break;
3329                         }
3330
3331                 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3332                           logical_port_id);
3333         } else {
3334                 ehea_remove_adapter_mr(adapter);
3335                 return -EIO;
3336         }
3337
3338         return (ssize_t) count;
3339 }
3340
3341 static ssize_t ehea_remove_port(struct device *dev,
3342                                 struct device_attribute *attr,
3343                                 const char *buf, size_t count)
3344 {
3345         struct ehea_adapter *adapter = dev_get_drvdata(dev);
3346         struct ehea_port *port;
3347         int i;
3348         u32 logical_port_id;
3349
3350         sscanf(buf, "%d", &logical_port_id);
3351
3352         port = ehea_get_port(adapter, logical_port_id);
3353
3354         if (port) {
3355                 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3356                           logical_port_id);
3357
3358                 ehea_shutdown_single_port(port);
3359
3360                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3361                         if (adapter->port[i] == port) {
3362                                 adapter->port[i] = NULL;
3363                                 break;
3364                         }
3365         } else {
3366                 ehea_error("removing port with logical port id=%d failed. port "
3367                            "not configured.", logical_port_id);
3368                 return -EINVAL;
3369         }
3370
3371         ehea_remove_adapter_mr(adapter);
3372
3373         return (ssize_t) count;
3374 }
3375
3376 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3377 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3378
3379 int ehea_create_device_sysfs(struct platform_device *dev)
3380 {
3381         int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3382         if (ret)
3383                 goto out;
3384
3385         ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3386 out:
3387         return ret;
3388 }
3389
3390 void ehea_remove_device_sysfs(struct platform_device *dev)
3391 {
3392         device_remove_file(&dev->dev, &dev_attr_probe_port);
3393         device_remove_file(&dev->dev, &dev_attr_remove_port);
3394 }
3395
3396 static int __devinit ehea_probe_adapter(struct platform_device *dev,
3397                                         const struct of_device_id *id)
3398 {
3399         struct ehea_adapter *adapter;
3400         const u64 *adapter_handle;
3401         int ret;
3402
3403         if (!dev || !dev->dev.of_node) {
3404                 ehea_error("Invalid ibmebus device probed");
3405                 return -EINVAL;
3406         }
3407
3408         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3409         if (!adapter) {
3410                 ret = -ENOMEM;
3411                 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3412                 goto out;
3413         }
3414
3415         list_add(&adapter->list, &adapter_list);
3416
3417         adapter->ofdev = dev;
3418
3419         adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3420                                          NULL);
3421         if (adapter_handle)
3422                 adapter->handle = *adapter_handle;
3423
3424         if (!adapter->handle) {
3425                 dev_err(&dev->dev, "failed getting handle for adapter"
3426                         " '%s'\n", dev->dev.of_node->full_name);
3427                 ret = -ENODEV;
3428                 goto out_free_ad;
3429         }
3430
3431         adapter->pd = EHEA_PD_ID;
3432
3433         dev_set_drvdata(&dev->dev, adapter);
3434
3435
3436         /* initialize adapter and ports */
3437         /* get adapter properties */
3438         ret = ehea_sense_adapter_attr(adapter);
3439         if (ret) {
3440                 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3441                 goto out_free_ad;
3442         }
3443
3444         adapter->neq = ehea_create_eq(adapter,
3445                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3446         if (!adapter->neq) {
3447                 ret = -EIO;
3448                 dev_err(&dev->dev, "NEQ creation failed\n");
3449                 goto out_free_ad;
3450         }
3451
3452         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3453                      (unsigned long)adapter);
3454
3455         ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3456                                   ehea_interrupt_neq, IRQF_DISABLED,
3457                                   "ehea_neq", adapter);
3458         if (ret) {
3459                 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3460                 goto out_kill_eq;
3461         }
3462
3463         ret = ehea_create_device_sysfs(dev);
3464         if (ret)
3465                 goto out_free_irq;
3466
3467         ret = ehea_setup_ports(adapter);
3468         if (ret) {
3469                 dev_err(&dev->dev, "setup_ports failed\n");
3470                 goto out_rem_dev_sysfs;
3471         }
3472
3473         ret = 0;
3474         goto out;
3475
3476 out_rem_dev_sysfs:
3477         ehea_remove_device_sysfs(dev);
3478
3479 out_free_irq:
3480         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3481
3482 out_kill_eq:
3483         ehea_destroy_eq(adapter->neq);
3484
3485 out_free_ad:
3486         list_del(&adapter->list);
3487         kfree(adapter);
3488
3489 out:
3490         ehea_update_firmware_handles();
3491
3492         return ret;
3493 }
3494
3495 static int __devexit ehea_remove(struct platform_device *dev)
3496 {
3497         struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3498         int i;
3499
3500         for (i = 0; i < EHEA_MAX_PORTS; i++)
3501                 if (adapter->port[i]) {
3502                         ehea_shutdown_single_port(adapter->port[i]);
3503                         adapter->port[i] = NULL;
3504                 }
3505
3506         ehea_remove_device_sysfs(dev);
3507
3508         flush_scheduled_work();
3509
3510         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3511         tasklet_kill(&adapter->neq_tasklet);
3512
3513         ehea_destroy_eq(adapter->neq);
3514         ehea_remove_adapter_mr(adapter);
3515         list_del(&adapter->list);
3516         kfree(adapter);
3517
3518         ehea_update_firmware_handles();
3519
3520         return 0;
3521 }
3522
3523 void ehea_crash_handler(void)
3524 {
3525         int i;
3526
3527         if (ehea_fw_handles.arr)
3528                 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3529                         ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3530                                              ehea_fw_handles.arr[i].fwh,
3531                                              FORCE_FREE);
3532
3533         if (ehea_bcmc_regs.arr)
3534                 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3535                         ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3536                                               ehea_bcmc_regs.arr[i].port_id,
3537                                               ehea_bcmc_regs.arr[i].reg_type,
3538                                               ehea_bcmc_regs.arr[i].macaddr,
3539                                               0, H_DEREG_BCMC);
3540 }
3541
3542 static int ehea_mem_notifier(struct notifier_block *nb,
3543                              unsigned long action, void *data)
3544 {
3545         int ret = NOTIFY_BAD;
3546         struct memory_notify *arg = data;
3547
3548         mutex_lock(&dlpar_mem_lock);
3549
3550         switch (action) {
3551         case MEM_CANCEL_OFFLINE:
3552                 ehea_info("memory offlining canceled");
3553                 /* Readd canceled memory block */
3554         case MEM_ONLINE:
3555                 ehea_info("memory is going online");
3556                 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3557                 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3558                         goto out_unlock;
3559                 ehea_rereg_mrs(NULL);
3560                 break;
3561         case MEM_GOING_OFFLINE:
3562                 ehea_info("memory is going offline");
3563                 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3564                 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3565                         goto out_unlock;
3566                 ehea_rereg_mrs(NULL);
3567                 break;
3568         default:
3569                 break;
3570         }
3571
3572         ehea_update_firmware_handles();
3573         ret = NOTIFY_OK;
3574
3575 out_unlock:
3576         mutex_unlock(&dlpar_mem_lock);
3577         return ret;
3578 }
3579
3580 static struct notifier_block ehea_mem_nb = {
3581         .notifier_call = ehea_mem_notifier,
3582 };
3583
3584 static int ehea_reboot_notifier(struct notifier_block *nb,
3585                                 unsigned long action, void *unused)
3586 {
3587         if (action == SYS_RESTART) {
3588                 ehea_info("Reboot: freeing all eHEA resources");
3589                 ibmebus_unregister_driver(&ehea_driver);
3590         }
3591         return NOTIFY_DONE;
3592 }
3593
3594 static struct notifier_block ehea_reboot_nb = {
3595         .notifier_call = ehea_reboot_notifier,
3596 };
3597
3598 static int check_module_parm(void)
3599 {
3600         int ret = 0;
3601
3602         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3603             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3604                 ehea_info("Bad parameter: rq1_entries");
3605                 ret = -EINVAL;
3606         }
3607         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3608             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3609                 ehea_info("Bad parameter: rq2_entries");
3610                 ret = -EINVAL;
3611         }
3612         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3613             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3614                 ehea_info("Bad parameter: rq3_entries");
3615                 ret = -EINVAL;
3616         }
3617         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3618             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3619                 ehea_info("Bad parameter: sq_entries");
3620                 ret = -EINVAL;
3621         }
3622
3623         return ret;
3624 }
3625
3626 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3627                                       char *buf)
3628 {
3629         return sprintf(buf, "%d", EHEA_CAPABILITIES);
3630 }
3631
3632 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3633                    ehea_show_capabilities, NULL);
3634
3635 int __init ehea_module_init(void)
3636 {
3637         int ret;
3638
3639         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3640                DRV_VERSION);
3641
3642
3643         INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3644         memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3645         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3646
3647         mutex_init(&ehea_fw_handles.lock);
3648         spin_lock_init(&ehea_bcmc_regs.lock);
3649
3650         ret = check_module_parm();
3651         if (ret)
3652                 goto out;
3653
3654         ret = ehea_create_busmap();
3655         if (ret)
3656                 goto out;
3657
3658         ret = register_reboot_notifier(&ehea_reboot_nb);
3659         if (ret)
3660                 ehea_info("failed registering reboot notifier");
3661
3662         ret = register_memory_notifier(&ehea_mem_nb);
3663         if (ret)
3664                 ehea_info("failed registering memory remove notifier");
3665
3666         ret = crash_shutdown_register(&ehea_crash_handler);
3667         if (ret)
3668                 ehea_info("failed registering crash handler");
3669
3670         ret = ibmebus_register_driver(&ehea_driver);
3671         if (ret) {
3672                 ehea_error("failed registering eHEA device driver on ebus");
3673                 goto out2;
3674         }
3675
3676         ret = driver_create_file(&ehea_driver.driver,
3677                                  &driver_attr_capabilities);
3678         if (ret) {
3679                 ehea_error("failed to register capabilities attribute, ret=%d",
3680                            ret);
3681                 goto out3;
3682         }
3683
3684         return ret;
3685
3686 out3:
3687         ibmebus_unregister_driver(&ehea_driver);
3688 out2:
3689         unregister_memory_notifier(&ehea_mem_nb);
3690         unregister_reboot_notifier(&ehea_reboot_nb);
3691         crash_shutdown_unregister(&ehea_crash_handler);
3692 out:
3693         return ret;
3694 }
3695
3696 static void __exit ehea_module_exit(void)
3697 {
3698         int ret;
3699
3700         flush_scheduled_work();
3701         driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3702         ibmebus_unregister_driver(&ehea_driver);
3703         unregister_reboot_notifier(&ehea_reboot_nb);
3704         ret = crash_shutdown_unregister(&ehea_crash_handler);
3705         if (ret)
3706                 ehea_info("failed unregistering crash handler");
3707         unregister_memory_notifier(&ehea_mem_nb);
3708         kfree(ehea_fw_handles.arr);
3709         kfree(ehea_bcmc_regs.arr);
3710         ehea_destroy_busmap();
3711 }
3712
3713 module_init(ehea_module_init);
3714 module_exit(ehea_module_exit);