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 of_device *dev,
 111                                         const struct of_device_id *id);
 112
 113 static int __devexit ehea_remove(struct of_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_ATOMIC);
 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                 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
 871                 cqe_skb = ehea_poll_cq(pr->send_cq);
 872
 873                 if (!cqe && !cqe_skb)
 874                         return rx;
 875
 876                 if (!napi_reschedule(napi))
 877                         return rx;
 878
 879                 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
 880                 rx += ehea_proc_rwqes(dev, pr, budget - rx);
 881         }
 882
 883         pr->poll_counter++;
 884         return rx;
 885 }
 886
 887 #ifdef CONFIG_NET_POLL_CONTROLLER
 888 static void ehea_netpoll(struct net_device *dev)
 889 {
 890         struct ehea_port *port = netdev_priv(dev);
 891         int i;
 892
 893         for (i = 0; i < port->num_def_qps; i++)
 894                 napi_schedule(&port->port_res[i].napi);
 895 }
 896 #endif
 897
 898 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
 899 {
 900         struct ehea_port_res *pr = param;
 901
 902         napi_schedule(&pr->napi);
 903
 904         return IRQ_HANDLED;
 905 }
 906
 907 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
 908 {
 909         struct ehea_port *port = param;
 910         struct ehea_eqe *eqe;
 911         struct ehea_qp *qp;
 912         u32 qp_token;
 913         u64 resource_type, aer, aerr;
 914         int reset_port = 0;
 915
 916         eqe = ehea_poll_eq(port->qp_eq);
 917
 918         while (eqe) {
 919                 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
 920                 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
 921                            eqe->entry, qp_token);
 922
 923                 qp = port->port_res[qp_token].qp;
 924
 925                 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
 926                                                 &aer, &aerr);
 927
 928                 if (resource_type == EHEA_AER_RESTYPE_QP) {
 929                         if ((aer & EHEA_AER_RESET_MASK) ||
 930                             (aerr & EHEA_AERR_RESET_MASK))
 931                                  reset_port = 1;
 932                 } else
 933                         reset_port = 1;   /* Reset in case of CQ or EQ error */
 934
 935                 eqe = ehea_poll_eq(port->qp_eq);
 936         }
 937
 938         if (reset_port) {
 939                 ehea_error("Resetting port");
 940                 ehea_schedule_port_reset(port);
 941         }
 942
 943         return IRQ_HANDLED;
 944 }
 945
 946 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
 947                                        int logical_port)
 948 {
 949         int i;
 950
 951         for (i = 0; i < EHEA_MAX_PORTS; i++)
 952                 if (adapter->port[i])
 953                         if (adapter->port[i]->logical_port_id == logical_port)
 954                                 return adapter->port[i];
 955         return NULL;
 956 }
 957
 958 int ehea_sense_port_attr(struct ehea_port *port)
 959 {
 960         int ret;
 961         u64 hret;
 962         struct hcp_ehea_port_cb0 *cb0;
 963
 964         /* may be called via ehea_neq_tasklet() */
 965         cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
 966         if (!cb0) {
 967                 ehea_error("no mem for cb0");
 968                 ret = -ENOMEM;
 969                 goto out;
 970         }
 971
 972         hret = ehea_h_query_ehea_port(port->adapter->handle,
 973                                       port->logical_port_id, H_PORT_CB0,
 974                                       EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
 975                                       cb0);
 976         if (hret != H_SUCCESS) {
 977                 ret = -EIO;
 978                 goto out_free;
 979         }
 980
 981         /* MAC address */
 982         port->mac_addr = cb0->port_mac_addr << 16;
 983
 984         if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
 985                 ret = -EADDRNOTAVAIL;
 986                 goto out_free;
 987         }
 988
 989         /* Port speed */
 990         switch (cb0->port_speed) {
 991         case H_SPEED_10M_H:
 992                 port->port_speed = EHEA_SPEED_10M;
 993                 port->full_duplex = 0;
 994                 break;
 995         case H_SPEED_10M_F:
 996                 port->port_speed = EHEA_SPEED_10M;
 997                 port->full_duplex = 1;
 998                 break;
 999         case H_SPEED_100M_H:
1000                 port->port_speed = EHEA_SPEED_100M;
1001                 port->full_duplex = 0;
1002                 break;
1003         case H_SPEED_100M_F:
1004                 port->port_speed = EHEA_SPEED_100M;
1005                 port->full_duplex = 1;
1006                 break;
1007         case H_SPEED_1G_F:
1008                 port->port_speed = EHEA_SPEED_1G;
1009                 port->full_duplex = 1;
1010                 break;
1011         case H_SPEED_10G_F:
1012                 port->port_speed = EHEA_SPEED_10G;
1013                 port->full_duplex = 1;
1014                 break;
1015         default:
1016                 port->port_speed = 0;
1017                 port->full_duplex = 0;
1018                 break;
1019         }
1020
1021         port->autoneg = 1;
1022         port->num_mcs = cb0->num_default_qps;
1023
1024         /* Number of default QPs */
1025         if (use_mcs)
1026                 port->num_def_qps = cb0->num_default_qps;
1027         else
1028                 port->num_def_qps = 1;
1029
1030         if (!port->num_def_qps) {
1031                 ret = -EINVAL;
1032                 goto out_free;
1033         }
1034
1035         port->num_tx_qps = num_tx_qps;
1036
1037         if (port->num_def_qps >= port->num_tx_qps)
1038                 port->num_add_tx_qps = 0;
1039         else
1040                 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
1041
1042         ret = 0;
1043 out_free:
1044         if (ret || netif_msg_probe(port))
1045                 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1046         free_page((unsigned long)cb0);
1047 out:
1048         return ret;
1049 }
1050
1051 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1052 {
1053         struct hcp_ehea_port_cb4 *cb4;
1054         u64 hret;
1055         int ret = 0;
1056
1057         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1058         if (!cb4) {
1059                 ehea_error("no mem for cb4");
1060                 ret = -ENOMEM;
1061                 goto out;
1062         }
1063
1064         cb4->port_speed = port_speed;
1065
1066         netif_carrier_off(port->netdev);
1067
1068         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1069                                        port->logical_port_id,
1070                                        H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1071         if (hret == H_SUCCESS) {
1072                 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1073
1074                 hret = ehea_h_query_ehea_port(port->adapter->handle,
1075                                               port->logical_port_id,
1076                                               H_PORT_CB4, H_PORT_CB4_SPEED,
1077                                               cb4);
1078                 if (hret == H_SUCCESS) {
1079                         switch (cb4->port_speed) {
1080                         case H_SPEED_10M_H:
1081                                 port->port_speed = EHEA_SPEED_10M;
1082                                 port->full_duplex = 0;
1083                                 break;
1084                         case H_SPEED_10M_F:
1085                                 port->port_speed = EHEA_SPEED_10M;
1086                                 port->full_duplex = 1;
1087                                 break;
1088                         case H_SPEED_100M_H:
1089                                 port->port_speed = EHEA_SPEED_100M;
1090                                 port->full_duplex = 0;
1091                                 break;
1092                         case H_SPEED_100M_F:
1093                                 port->port_speed = EHEA_SPEED_100M;
1094                                 port->full_duplex = 1;
1095                                 break;
1096                         case H_SPEED_1G_F:
1097                                 port->port_speed = EHEA_SPEED_1G;
1098                                 port->full_duplex = 1;
1099                                 break;
1100                         case H_SPEED_10G_F:
1101                                 port->port_speed = EHEA_SPEED_10G;
1102                                 port->full_duplex = 1;
1103                                 break;
1104                         default:
1105                                 port->port_speed = 0;
1106                                 port->full_duplex = 0;
1107                                 break;
1108                         }
1109                 } else {
1110                         ehea_error("Failed sensing port speed");
1111                         ret = -EIO;
1112                 }
1113         } else {
1114                 if (hret == H_AUTHORITY) {
1115                         ehea_info("Hypervisor denied setting port speed");
1116                         ret = -EPERM;
1117                 } else {
1118                         ret = -EIO;
1119                         ehea_error("Failed setting port speed");
1120                 }
1121         }
1122         if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1123                 netif_carrier_on(port->netdev);
1124
1125         free_page((unsigned long)cb4);
1126 out:
1127         return ret;
1128 }
1129
1130 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1131 {
1132         int ret;
1133         u8 ec;
1134         u8 portnum;
1135         struct ehea_port *port;
1136
1137         ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1138         portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1139         port = ehea_get_port(adapter, portnum);
1140
1141         switch (ec) {
1142         case EHEA_EC_PORTSTATE_CHG:     /* port state change */
1143
1144                 if (!port) {
1145                         ehea_error("unknown portnum %x", portnum);
1146                         break;
1147                 }
1148
1149                 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1150                         if (!netif_carrier_ok(port->netdev)) {
1151                                 ret = ehea_sense_port_attr(port);
1152                                 if (ret) {
1153                                         ehea_error("failed resensing port "
1154                                                    "attributes");
1155                                         break;
1156                                 }
1157
1158                                 if (netif_msg_link(port))
1159                                         ehea_info("%s: Logical port up: %dMbps "
1160                                                   "%s Duplex",
1161                                                   port->netdev->name,
1162                                                   port->port_speed,
1163                                                   port->full_duplex ==
1164                                                   1 ? "Full" : "Half");
1165
1166                                 netif_carrier_on(port->netdev);
1167                                 netif_wake_queue(port->netdev);
1168                         }
1169                 } else
1170                         if (netif_carrier_ok(port->netdev)) {
1171                                 if (netif_msg_link(port))
1172                                         ehea_info("%s: Logical port down",
1173                                                   port->netdev->name);
1174                                 netif_carrier_off(port->netdev);
1175                                 netif_stop_queue(port->netdev);
1176                         }
1177
1178                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1179                         port->phy_link = EHEA_PHY_LINK_UP;
1180                         if (netif_msg_link(port))
1181                                 ehea_info("%s: Physical port up",
1182                                           port->netdev->name);
1183                         if (prop_carrier_state)
1184                                 netif_carrier_on(port->netdev);
1185                 } else {
1186                         port->phy_link = EHEA_PHY_LINK_DOWN;
1187                         if (netif_msg_link(port))
1188                                 ehea_info("%s: Physical port down",
1189                                           port->netdev->name);
1190                         if (prop_carrier_state)
1191                                 netif_carrier_off(port->netdev);
1192                 }
1193
1194                 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1195                         ehea_info("External switch port is primary port");
1196                 else
1197                         ehea_info("External switch port is backup port");
1198
1199                 break;
1200         case EHEA_EC_ADAPTER_MALFUNC:
1201                 ehea_error("Adapter malfunction");
1202                 break;
1203         case EHEA_EC_PORT_MALFUNC:
1204                 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1205                 netif_carrier_off(port->netdev);
1206                 netif_stop_queue(port->netdev);
1207                 break;
1208         default:
1209                 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1210                 break;
1211         }
1212 }
1213
1214 static void ehea_neq_tasklet(unsigned long data)
1215 {
1216         struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1217         struct ehea_eqe *eqe;
1218         u64 event_mask;
1219
1220         eqe = ehea_poll_eq(adapter->neq);
1221         ehea_debug("eqe=%p", eqe);
1222
1223         while (eqe) {
1224                 ehea_debug("*eqe=%lx", eqe->entry);
1225                 ehea_parse_eqe(adapter, eqe->entry);
1226                 eqe = ehea_poll_eq(adapter->neq);
1227                 ehea_debug("next eqe=%p", eqe);
1228         }
1229
1230         event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1231                    | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1232                    | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1233
1234         ehea_h_reset_events(adapter->handle,
1235                             adapter->neq->fw_handle, event_mask);
1236 }
1237
1238 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1239 {
1240         struct ehea_adapter *adapter = param;
1241         tasklet_hi_schedule(&adapter->neq_tasklet);
1242         return IRQ_HANDLED;
1243 }
1244
1245
1246 static int ehea_fill_port_res(struct ehea_port_res *pr)
1247 {
1248         int ret;
1249         struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1250
1251         ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1252                                - init_attr->act_nr_rwqes_rq2
1253                                - init_attr->act_nr_rwqes_rq3 - 1);
1254
1255         ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1256
1257         ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1258
1259         return ret;
1260 }
1261
1262 static int ehea_reg_interrupts(struct net_device *dev)
1263 {
1264         struct ehea_port *port = netdev_priv(dev);
1265         struct ehea_port_res *pr;
1266         int i, ret;
1267
1268
1269         snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1270                  dev->name);
1271
1272         ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1273                                   ehea_qp_aff_irq_handler,
1274                                   IRQF_DISABLED, port->int_aff_name, port);
1275         if (ret) {
1276                 ehea_error("failed registering irq for qp_aff_irq_handler:"
1277                            "ist=%X", port->qp_eq->attr.ist1);
1278                 goto out_free_qpeq;
1279         }
1280
1281         if (netif_msg_ifup(port))
1282                 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1283                           "registered", port->qp_eq->attr.ist1);
1284
1285
1286         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1287                 pr = &port->port_res[i];
1288                 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1289                          "%s-queue%d", dev->name, i);
1290                 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1291                                           ehea_recv_irq_handler,
1292                                           IRQF_DISABLED, pr->int_send_name,
1293                                           pr);
1294                 if (ret) {
1295                         ehea_error("failed registering irq for ehea_queue "
1296                                    "port_res_nr:%d, ist=%X", i,
1297                                    pr->eq->attr.ist1);
1298                         goto out_free_req;
1299                 }
1300                 if (netif_msg_ifup(port))
1301                         ehea_info("irq_handle 0x%X for function ehea_queue_int "
1302                                   "%d registered", pr->eq->attr.ist1, i);
1303         }
1304 out:
1305         return ret;
1306
1307
1308 out_free_req:
1309         while (--i >= 0) {
1310                 u32 ist = port->port_res[i].eq->attr.ist1;
1311                 ibmebus_free_irq(ist, &port->port_res[i]);
1312         }
1313
1314 out_free_qpeq:
1315         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1316         i = port->num_def_qps;
1317
1318         goto out;
1319
1320 }
1321
1322 static void ehea_free_interrupts(struct net_device *dev)
1323 {
1324         struct ehea_port *port = netdev_priv(dev);
1325         struct ehea_port_res *pr;
1326         int i;
1327
1328         /* send */
1329
1330         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1331                 pr = &port->port_res[i];
1332                 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1333                 if (netif_msg_intr(port))
1334                         ehea_info("free send irq for res %d with handle 0x%X",
1335                                   i, pr->eq->attr.ist1);
1336         }
1337
1338         /* associated events */
1339         ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1340         if (netif_msg_intr(port))
1341                 ehea_info("associated event interrupt for handle 0x%X freed",
1342                           port->qp_eq->attr.ist1);
1343 }
1344
1345 static int ehea_configure_port(struct ehea_port *port)
1346 {
1347         int ret, i;
1348         u64 hret, mask;
1349         struct hcp_ehea_port_cb0 *cb0;
1350
1351         ret = -ENOMEM;
1352         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1353         if (!cb0)
1354                 goto out;
1355
1356         cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1357                      | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1358                      | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1359                      | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1360                      | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1361                                       PXLY_RC_VLAN_FILTER)
1362                      | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1363
1364         for (i = 0; i < port->num_mcs; i++)
1365                 if (use_mcs)
1366                         cb0->default_qpn_arr[i] =
1367                                 port->port_res[i].qp->init_attr.qp_nr;
1368                 else
1369                         cb0->default_qpn_arr[i] =
1370                                 port->port_res[0].qp->init_attr.qp_nr;
1371
1372         if (netif_msg_ifup(port))
1373                 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1374
1375         mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1376              | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1377
1378         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1379                                        port->logical_port_id,
1380                                        H_PORT_CB0, mask, cb0);
1381         ret = -EIO;
1382         if (hret != H_SUCCESS)
1383                 goto out_free;
1384
1385         ret = 0;
1386
1387 out_free:
1388         free_page((unsigned long)cb0);
1389 out:
1390         return ret;
1391 }
1392
1393 int ehea_gen_smrs(struct ehea_port_res *pr)
1394 {
1395         int ret;
1396         struct ehea_adapter *adapter = pr->port->adapter;
1397
1398         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1399         if (ret)
1400                 goto out;
1401
1402         ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1403         if (ret)
1404                 goto out_free;
1405
1406         return 0;
1407
1408 out_free:
1409         ehea_rem_mr(&pr->send_mr);
1410 out:
1411         ehea_error("Generating SMRS failed\n");
1412         return -EIO;
1413 }
1414
1415 int ehea_rem_smrs(struct ehea_port_res *pr)
1416 {
1417         if ((ehea_rem_mr(&pr->send_mr)) ||
1418             (ehea_rem_mr(&pr->recv_mr)))
1419                 return -EIO;
1420         else
1421                 return 0;
1422 }
1423
1424 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1425 {
1426         int arr_size = sizeof(void *) * max_q_entries;
1427
1428         q_skba->arr = vmalloc(arr_size);
1429         if (!q_skba->arr)
1430                 return -ENOMEM;
1431
1432         memset(q_skba->arr, 0, arr_size);
1433
1434         q_skba->len = max_q_entries;
1435         q_skba->index = 0;
1436         q_skba->os_skbs = 0;
1437
1438         return 0;
1439 }
1440
1441 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1442                               struct port_res_cfg *pr_cfg, int queue_token)
1443 {
1444         struct ehea_adapter *adapter = port->adapter;
1445         enum ehea_eq_type eq_type = EHEA_EQ;
1446         struct ehea_qp_init_attr *init_attr = NULL;
1447         int ret = -EIO;
1448
1449         memset(pr, 0, sizeof(struct ehea_port_res));
1450
1451         pr->port = port;
1452         spin_lock_init(&pr->xmit_lock);
1453         spin_lock_init(&pr->netif_queue);
1454
1455         pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1456         if (!pr->eq) {
1457                 ehea_error("create_eq failed (eq)");
1458                 goto out_free;
1459         }
1460
1461         pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1462                                      pr->eq->fw_handle,
1463                                      port->logical_port_id);
1464         if (!pr->recv_cq) {
1465                 ehea_error("create_cq failed (cq_recv)");
1466                 goto out_free;
1467         }
1468
1469         pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1470                                      pr->eq->fw_handle,
1471                                      port->logical_port_id);
1472         if (!pr->send_cq) {
1473                 ehea_error("create_cq failed (cq_send)");
1474                 goto out_free;
1475         }
1476
1477         if (netif_msg_ifup(port))
1478                 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1479                           pr->send_cq->attr.act_nr_of_cqes,
1480                           pr->recv_cq->attr.act_nr_of_cqes);
1481
1482         init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1483         if (!init_attr) {
1484                 ret = -ENOMEM;
1485                 ehea_error("no mem for ehea_qp_init_attr");
1486                 goto out_free;
1487         }
1488
1489         init_attr->low_lat_rq1 = 1;
1490         init_attr->signalingtype = 1;   /* generate CQE if specified in WQE */
1491         init_attr->rq_count = 3;
1492         init_attr->qp_token = queue_token;
1493         init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1494         init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1495         init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1496         init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1497         init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1498         init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1499         init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1500         init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1501         init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1502         init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1503         init_attr->port_nr = port->logical_port_id;
1504         init_attr->send_cq_handle = pr->send_cq->fw_handle;
1505         init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1506         init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1507
1508         pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1509         if (!pr->qp) {
1510                 ehea_error("create_qp failed");
1511                 ret = -EIO;
1512                 goto out_free;
1513         }
1514
1515         if (netif_msg_ifup(port))
1516                 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1517                           "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1518                           init_attr->act_nr_send_wqes,
1519                           init_attr->act_nr_rwqes_rq1,
1520                           init_attr->act_nr_rwqes_rq2,
1521                           init_attr->act_nr_rwqes_rq3);
1522
1523         pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1524
1525         ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1526         ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1527         ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1528         ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1529         if (ret)
1530                 goto out_free;
1531
1532         pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1533         if (ehea_gen_smrs(pr) != 0) {
1534                 ret = -EIO;
1535                 goto out_free;
1536         }
1537
1538         atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1539
1540         kfree(init_attr);
1541
1542         netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1543
1544         pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1545         pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1546         pr->lro_mgr.lro_arr = pr->lro_desc;
1547         pr->lro_mgr.get_skb_header = get_skb_hdr;
1548         pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1549         pr->lro_mgr.dev = port->netdev;
1550         pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1551         pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1552
1553         ret = 0;
1554         goto out;
1555
1556 out_free:
1557         kfree(init_attr);
1558         vfree(pr->sq_skba.arr);
1559         vfree(pr->rq1_skba.arr);
1560         vfree(pr->rq2_skba.arr);
1561         vfree(pr->rq3_skba.arr);
1562         ehea_destroy_qp(pr->qp);
1563         ehea_destroy_cq(pr->send_cq);
1564         ehea_destroy_cq(pr->recv_cq);
1565         ehea_destroy_eq(pr->eq);
1566 out:
1567         return ret;
1568 }
1569
1570 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1571 {
1572         int ret, i;
1573
1574         if (pr->qp)
1575                 netif_napi_del(&pr->napi);
1576
1577         ret = ehea_destroy_qp(pr->qp);
1578
1579         if (!ret) {
1580                 ehea_destroy_cq(pr->send_cq);
1581                 ehea_destroy_cq(pr->recv_cq);
1582                 ehea_destroy_eq(pr->eq);
1583
1584                 for (i = 0; i < pr->rq1_skba.len; i++)
1585                         if (pr->rq1_skba.arr[i])
1586                                 dev_kfree_skb(pr->rq1_skba.arr[i]);
1587
1588                 for (i = 0; i < pr->rq2_skba.len; i++)
1589                         if (pr->rq2_skba.arr[i])
1590                                 dev_kfree_skb(pr->rq2_skba.arr[i]);
1591
1592                 for (i = 0; i < pr->rq3_skba.len; i++)
1593                         if (pr->rq3_skba.arr[i])
1594                                 dev_kfree_skb(pr->rq3_skba.arr[i]);
1595
1596                 for (i = 0; i < pr->sq_skba.len; i++)
1597                         if (pr->sq_skba.arr[i])
1598                                 dev_kfree_skb(pr->sq_skba.arr[i]);
1599
1600                 vfree(pr->rq1_skba.arr);
1601                 vfree(pr->rq2_skba.arr);
1602                 vfree(pr->rq3_skba.arr);
1603                 vfree(pr->sq_skba.arr);
1604                 ret = ehea_rem_smrs(pr);
1605         }
1606         return ret;
1607 }
1608
1609 /*
1610  * The write_* functions store information in swqe which is used by
1611  * the hardware to calculate the ip/tcp/udp checksum
1612  */
1613
1614 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1615                                       const struct sk_buff *skb)
1616 {
1617         swqe->ip_start = skb_network_offset(skb);
1618         swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1619 }
1620
1621 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1622                                         const struct sk_buff *skb)
1623 {
1624         swqe->tcp_offset =
1625                 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1626
1627         swqe->tcp_end = (u16)skb->len - 1;
1628 }
1629
1630 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1631                                         const struct sk_buff *skb)
1632 {
1633         swqe->tcp_offset =
1634                 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1635
1636         swqe->tcp_end = (u16)skb->len - 1;
1637 }
1638
1639
1640 static void write_swqe2_TSO(struct sk_buff *skb,
1641                             struct ehea_swqe *swqe, u32 lkey)
1642 {
1643         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1644         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1645         int skb_data_size = skb_headlen(skb);
1646         int headersize;
1647
1648         /* Packet is TCP with TSO enabled */
1649         swqe->tx_control |= EHEA_SWQE_TSO;
1650         swqe->mss = skb_shinfo(skb)->gso_size;
1651         /* copy only eth/ip/tcp headers to immediate data and
1652          * the rest of skb->data to sg1entry
1653          */
1654         headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1655
1656         skb_data_size = skb_headlen(skb);
1657
1658         if (skb_data_size >= headersize) {
1659                 /* copy immediate data */
1660                 skb_copy_from_linear_data(skb, imm_data, headersize);
1661                 swqe->immediate_data_length = headersize;
1662
1663                 if (skb_data_size > headersize) {
1664                         /* set sg1entry data */
1665                         sg1entry->l_key = lkey;
1666                         sg1entry->len = skb_data_size - headersize;
1667                         sg1entry->vaddr =
1668                                 ehea_map_vaddr(skb->data + headersize);
1669                         swqe->descriptors++;
1670                 }
1671         } else
1672                 ehea_error("cannot handle fragmented headers");
1673 }
1674
1675 static void write_swqe2_nonTSO(struct sk_buff *skb,
1676                                struct ehea_swqe *swqe, u32 lkey)
1677 {
1678         int skb_data_size = skb_headlen(skb);
1679         u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1680         struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1681
1682         /* Packet is any nonTSO type
1683          *
1684          * Copy as much as possible skb->data to immediate data and
1685          * the rest to sg1entry
1686          */
1687         if (skb_data_size >= SWQE2_MAX_IMM) {
1688                 /* copy immediate data */
1689                 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1690
1691                 swqe->immediate_data_length = SWQE2_MAX_IMM;
1692
1693                 if (skb_data_size > SWQE2_MAX_IMM) {
1694                         /* copy sg1entry data */
1695                         sg1entry->l_key = lkey;
1696                         sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1697                         sg1entry->vaddr =
1698                                 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1699                         swqe->descriptors++;
1700                 }
1701         } else {
1702                 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1703                 swqe->immediate_data_length = skb_data_size;
1704         }
1705 }
1706
1707 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1708                                     struct ehea_swqe *swqe, u32 lkey)
1709 {
1710         struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1711         skb_frag_t *frag;
1712         int nfrags, sg1entry_contains_frag_data, i;
1713
1714         nfrags = skb_shinfo(skb)->nr_frags;
1715         sg1entry = &swqe->u.immdata_desc.sg_entry;
1716         sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1717         swqe->descriptors = 0;
1718         sg1entry_contains_frag_data = 0;
1719
1720         if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1721                 write_swqe2_TSO(skb, swqe, lkey);
1722         else
1723                 write_swqe2_nonTSO(skb, swqe, lkey);
1724
1725         /* write descriptors */
1726         if (nfrags > 0) {
1727                 if (swqe->descriptors == 0) {
1728                         /* sg1entry not yet used */
1729                         frag = &skb_shinfo(skb)->frags[0];
1730
1731                         /* copy sg1entry data */
1732                         sg1entry->l_key = lkey;
1733                         sg1entry->len = frag->size;
1734                         sg1entry->vaddr =
1735                                 ehea_map_vaddr(page_address(frag->page)
1736                                                + frag->page_offset);
1737                         swqe->descriptors++;
1738                         sg1entry_contains_frag_data = 1;
1739                 }
1740
1741                 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1742
1743                         frag = &skb_shinfo(skb)->frags[i];
1744                         sgentry = &sg_list[i - sg1entry_contains_frag_data];
1745
1746                         sgentry->l_key = lkey;
1747                         sgentry->len = frag->size;
1748                         sgentry->vaddr =
1749                                 ehea_map_vaddr(page_address(frag->page)
1750                                                + frag->page_offset);
1751                         swqe->descriptors++;
1752                 }
1753         }
1754 }
1755
1756 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1757 {
1758         int ret = 0;
1759         u64 hret;
1760         u8 reg_type;
1761
1762         /* De/Register untagged packets */
1763         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1764         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1765                                      port->logical_port_id,
1766                                      reg_type, port->mac_addr, 0, hcallid);
1767         if (hret != H_SUCCESS) {
1768                 ehea_error("%sregistering bc address failed (tagged)",
1769                            hcallid == H_REG_BCMC ? "" : "de");
1770                 ret = -EIO;
1771                 goto out_herr;
1772         }
1773
1774         /* De/Register VLAN packets */
1775         reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1776         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1777                                      port->logical_port_id,
1778                                      reg_type, port->mac_addr, 0, hcallid);
1779         if (hret != H_SUCCESS) {
1780                 ehea_error("%sregistering bc address failed (vlan)",
1781                            hcallid == H_REG_BCMC ? "" : "de");
1782                 ret = -EIO;
1783         }
1784 out_herr:
1785         return ret;
1786 }
1787
1788 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1789 {
1790         struct ehea_port *port = netdev_priv(dev);
1791         struct sockaddr *mac_addr = sa;
1792         struct hcp_ehea_port_cb0 *cb0;
1793         int ret;
1794         u64 hret;
1795
1796         if (!is_valid_ether_addr(mac_addr->sa_data)) {
1797                 ret = -EADDRNOTAVAIL;
1798                 goto out;
1799         }
1800
1801         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1802         if (!cb0) {
1803                 ehea_error("no mem for cb0");
1804                 ret = -ENOMEM;
1805                 goto out;
1806         }
1807
1808         memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1809
1810         cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1811
1812         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1813                                        port->logical_port_id, H_PORT_CB0,
1814                                        EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1815         if (hret != H_SUCCESS) {
1816                 ret = -EIO;
1817                 goto out_free;
1818         }
1819
1820         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1821
1822         /* Deregister old MAC in pHYP */
1823         if (port->state == EHEA_PORT_UP) {
1824                 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1825                 if (ret)
1826                         goto out_upregs;
1827         }
1828
1829         port->mac_addr = cb0->port_mac_addr << 16;
1830
1831         /* Register new MAC in pHYP */
1832         if (port->state == EHEA_PORT_UP) {
1833                 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1834                 if (ret)
1835                         goto out_upregs;
1836         }
1837
1838         ret = 0;
1839
1840 out_upregs:
1841         ehea_update_bcmc_registrations();
1842 out_free:
1843         free_page((unsigned long)cb0);
1844 out:
1845         return ret;
1846 }
1847
1848 static void ehea_promiscuous_error(u64 hret, int enable)
1849 {
1850         if (hret == H_AUTHORITY)
1851                 ehea_info("Hypervisor denied %sabling promiscuous mode",
1852                           enable == 1 ? "en" : "dis");
1853         else
1854                 ehea_error("failed %sabling promiscuous mode",
1855                            enable == 1 ? "en" : "dis");
1856 }
1857
1858 static void ehea_promiscuous(struct net_device *dev, int enable)
1859 {
1860         struct ehea_port *port = netdev_priv(dev);
1861         struct hcp_ehea_port_cb7 *cb7;
1862         u64 hret;
1863
1864         if ((enable && port->promisc) || (!enable && !port->promisc))
1865                 return;
1866
1867         cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1868         if (!cb7) {
1869                 ehea_error("no mem for cb7");
1870                 goto out;
1871         }
1872
1873         /* Modify Pxs_DUCQPN in CB7 */
1874         cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1875
1876         hret = ehea_h_modify_ehea_port(port->adapter->handle,
1877                                        port->logical_port_id,
1878                                        H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1879         if (hret) {
1880                 ehea_promiscuous_error(hret, enable);
1881                 goto out;
1882         }
1883
1884         port->promisc = enable;
1885 out:
1886         free_page((unsigned long)cb7);
1887 }
1888
1889 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1890                                      u32 hcallid)
1891 {
1892         u64 hret;
1893         u8 reg_type;
1894
1895         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1896                  | EHEA_BCMC_UNTAGGED;
1897
1898         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1899                                      port->logical_port_id,
1900                                      reg_type, mc_mac_addr, 0, hcallid);
1901         if (hret)
1902                 goto out;
1903
1904         reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1905                  | EHEA_BCMC_VLANID_ALL;
1906
1907         hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1908                                      port->logical_port_id,
1909                                      reg_type, mc_mac_addr, 0, hcallid);
1910 out:
1911         return hret;
1912 }
1913
1914 static int ehea_drop_multicast_list(struct net_device *dev)
1915 {
1916         struct ehea_port *port = netdev_priv(dev);
1917         struct ehea_mc_list *mc_entry = port->mc_list;
1918         struct list_head *pos;
1919         struct list_head *temp;
1920         int ret = 0;
1921         u64 hret;
1922
1923         list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1924                 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1925
1926                 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1927                                                  H_DEREG_BCMC);
1928                 if (hret) {
1929                         ehea_error("failed deregistering mcast MAC");
1930                         ret = -EIO;
1931                 }
1932
1933                 list_del(pos);
1934                 kfree(mc_entry);
1935         }
1936         return ret;
1937 }
1938
1939 static void ehea_allmulti(struct net_device *dev, int enable)
1940 {
1941         struct ehea_port *port = netdev_priv(dev);
1942         u64 hret;
1943
1944         if (!port->allmulti) {
1945                 if (enable) {
1946                         /* Enable ALLMULTI */
1947                         ehea_drop_multicast_list(dev);
1948                         hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1949                         if (!hret)
1950                                 port->allmulti = 1;
1951                         else
1952                                 ehea_error("failed enabling IFF_ALLMULTI");
1953                 }
1954         } else
1955                 if (!enable) {
1956                         /* Disable ALLMULTI */
1957                         hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1958                         if (!hret)
1959                                 port->allmulti = 0;
1960                         else
1961                                 ehea_error("failed disabling IFF_ALLMULTI");
1962                 }
1963 }
1964
1965 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1966 {
1967         struct ehea_mc_list *ehea_mcl_entry;
1968         u64 hret;
1969
1970         ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1971         if (!ehea_mcl_entry) {
1972                 ehea_error("no mem for mcl_entry");
1973                 return;
1974         }
1975
1976         INIT_LIST_HEAD(&ehea_mcl_entry->list);
1977
1978         memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1979
1980         hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1981                                          H_REG_BCMC);
1982         if (!hret)
1983                 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1984         else {
1985                 ehea_error("failed registering mcast MAC");
1986                 kfree(ehea_mcl_entry);
1987         }
1988 }
1989
1990 static void ehea_set_multicast_list(struct net_device *dev)
1991 {
1992         struct ehea_port *port = netdev_priv(dev);
1993         struct netdev_hw_addr *ha;
1994         int ret;
1995
1996         if (dev->flags & IFF_PROMISC) {
1997                 ehea_promiscuous(dev, 1);
1998                 return;
1999         }
2000         ehea_promiscuous(dev, 0);
2001
2002         if (dev->flags & IFF_ALLMULTI) {
2003                 ehea_allmulti(dev, 1);
2004                 goto out;
2005         }
2006         ehea_allmulti(dev, 0);
2007
2008         if (!netdev_mc_empty(dev)) {
2009                 ret = ehea_drop_multicast_list(dev);
2010                 if (ret) {
2011                         /* Dropping the current multicast list failed.
2012                          * Enabling ALL_MULTI is the best we can do.
2013                          */
2014                         ehea_allmulti(dev, 1);
2015                 }
2016
2017                 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
2018                         ehea_info("Mcast registration limit reached (0x%llx). "
2019                                   "Use ALLMULTI!",
2020                                   port->adapter->max_mc_mac);
2021                         goto out;
2022                 }
2023
2024                 netdev_for_each_mc_addr(ha, dev)
2025                         ehea_add_multicast_entry(port, ha->addr);
2026
2027         }
2028 out:
2029         ehea_update_bcmc_registrations();
2030 }
2031
2032 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2033 {
2034         if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2035                 return -EINVAL;
2036         dev->mtu = new_mtu;
2037         return 0;
2038 }
2039
2040 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2041                        struct ehea_swqe *swqe, u32 lkey)
2042 {
2043         if (skb->protocol == htons(ETH_P_IP)) {
2044                 const struct iphdr *iph = ip_hdr(skb);
2045
2046                 /* IPv4 */
2047                 swqe->tx_control |= EHEA_SWQE_CRC
2048                                  | EHEA_SWQE_IP_CHECKSUM
2049                                  | EHEA_SWQE_TCP_CHECKSUM
2050                                  | EHEA_SWQE_IMM_DATA_PRESENT
2051                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2052
2053                 write_ip_start_end(swqe, skb);
2054
2055                 if (iph->protocol == IPPROTO_UDP) {
2056                         if ((iph->frag_off & IP_MF) ||
2057                             (iph->frag_off & IP_OFFSET))
2058                                 /* IP fragment, so don't change cs */
2059                                 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2060                         else
2061                                 write_udp_offset_end(swqe, skb);
2062                 } else if (iph->protocol == IPPROTO_TCP) {
2063                         write_tcp_offset_end(swqe, skb);
2064                 }
2065
2066                 /* icmp (big data) and ip segmentation packets (all other ip
2067                    packets) do not require any special handling */
2068
2069         } else {
2070                 /* Other Ethernet Protocol */
2071                 swqe->tx_control |= EHEA_SWQE_CRC
2072                                  | EHEA_SWQE_IMM_DATA_PRESENT
2073                                  | EHEA_SWQE_DESCRIPTORS_PRESENT;
2074         }
2075
2076         write_swqe2_data(skb, dev, swqe, lkey);
2077 }
2078
2079 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2080                        struct ehea_swqe *swqe)
2081 {
2082         int nfrags = skb_shinfo(skb)->nr_frags;
2083         u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2084         skb_frag_t *frag;
2085         int i;
2086
2087         if (skb->protocol == htons(ETH_P_IP)) {
2088                 const struct iphdr *iph = ip_hdr(skb);
2089
2090                 /* IPv4 */
2091                 write_ip_start_end(swqe, skb);
2092
2093                 if (iph->protocol == IPPROTO_TCP) {
2094                         swqe->tx_control |= EHEA_SWQE_CRC
2095                                          | EHEA_SWQE_IP_CHECKSUM
2096                                          | EHEA_SWQE_TCP_CHECKSUM
2097                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2098
2099                         write_tcp_offset_end(swqe, skb);
2100
2101                 } else if (iph->protocol == IPPROTO_UDP) {
2102                         if ((iph->frag_off & IP_MF) ||
2103                             (iph->frag_off & IP_OFFSET))
2104                                 /* IP fragment, so don't change cs */
2105                                 swqe->tx_control |= EHEA_SWQE_CRC
2106                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2107                         else {
2108                                 swqe->tx_control |= EHEA_SWQE_CRC
2109                                                  | EHEA_SWQE_IP_CHECKSUM
2110                                                  | EHEA_SWQE_TCP_CHECKSUM
2111                                                  | EHEA_SWQE_IMM_DATA_PRESENT;
2112
2113                                 write_udp_offset_end(swqe, skb);
2114                         }
2115                 } else {
2116                         /* icmp (big data) and
2117                            ip segmentation packets (all other ip packets) */
2118                         swqe->tx_control |= EHEA_SWQE_CRC
2119                                          | EHEA_SWQE_IP_CHECKSUM
2120                                          | EHEA_SWQE_IMM_DATA_PRESENT;
2121                 }
2122         } else {
2123                 /* Other Ethernet Protocol */
2124                 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2125         }
2126         /* copy (immediate) data */
2127         if (nfrags == 0) {
2128                 /* data is in a single piece */
2129                 skb_copy_from_linear_data(skb, imm_data, skb->len);
2130         } else {
2131                 /* first copy data from the skb->data buffer ... */
2132                 skb_copy_from_linear_data(skb, imm_data,
2133                                           skb_headlen(skb));
2134                 imm_data += skb_headlen(skb);
2135
2136                 /* ... then copy data from the fragments */
2137                 for (i = 0; i < nfrags; i++) {
2138                         frag = &skb_shinfo(skb)->frags[i];
2139                         memcpy(imm_data,
2140                                page_address(frag->page) + frag->page_offset,
2141                                frag->size);
2142                         imm_data += frag->size;
2143                 }
2144         }
2145         swqe->immediate_data_length = skb->len;
2146         dev_kfree_skb(skb);
2147 }
2148
2149 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2150 {
2151         struct tcphdr *tcp;
2152         u32 tmp;
2153
2154         if ((skb->protocol == htons(ETH_P_IP)) &&
2155             (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2156                 tcp = (struct tcphdr *)(skb_network_header(skb) +
2157                                         (ip_hdr(skb)->ihl * 4));
2158                 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2159                 tmp += ip_hdr(skb)->daddr % 31;
2160                 return tmp % num_qps;
2161         } else
2162                 return 0;
2163 }
2164
2165 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2166 {
2167         struct ehea_port *port = netdev_priv(dev);
2168         struct ehea_swqe *swqe;
2169         unsigned long flags;
2170         u32 lkey;
2171         int swqe_index;
2172         struct ehea_port_res *pr;
2173
2174         pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2175
2176         if (!spin_trylock(&pr->xmit_lock))
2177                 return NETDEV_TX_BUSY;
2178
2179         if (pr->queue_stopped) {
2180                 spin_unlock(&pr->xmit_lock);
2181                 return NETDEV_TX_BUSY;
2182         }
2183
2184         swqe = ehea_get_swqe(pr->qp, &swqe_index);
2185         memset(swqe, 0, SWQE_HEADER_SIZE);
2186         atomic_dec(&pr->swqe_avail);
2187
2188         if (skb->len <= SWQE3_MAX_IMM) {
2189                 u32 sig_iv = port->sig_comp_iv;
2190                 u32 swqe_num = pr->swqe_id_counter;
2191                 ehea_xmit3(skb, dev, swqe);
2192                 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2193                         | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2194                 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2195                         swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2196                                                       sig_iv);
2197                         swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2198                         pr->swqe_ll_count = 0;
2199                 } else
2200                         pr->swqe_ll_count += 1;
2201         } else {
2202                 swqe->wr_id =
2203                         EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2204                       | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2205                       | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2206                       | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2207                 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2208
2209                 pr->sq_skba.index++;
2210                 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2211
2212                 lkey = pr->send_mr.lkey;
2213                 ehea_xmit2(skb, dev, swqe, lkey);
2214                 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2215         }
2216         pr->swqe_id_counter += 1;
2217
2218         if (port->vgrp && vlan_tx_tag_present(skb)) {
2219                 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2220                 swqe->vlan_tag = vlan_tx_tag_get(skb);
2221         }
2222
2223         if (netif_msg_tx_queued(port)) {
2224                 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2225                 ehea_dump(swqe, 512, "swqe");
2226         }
2227
2228         if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2229                 netif_stop_queue(dev);
2230                 swqe->tx_control |= EHEA_SWQE_PURGE;
2231         }
2232
2233         ehea_post_swqe(pr->qp, swqe);
2234         pr->tx_packets++;
2235
2236         if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2237                 spin_lock_irqsave(&pr->netif_queue, flags);
2238                 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2239                         pr->p_stats.queue_stopped++;
2240                         netif_stop_queue(dev);
2241                         pr->queue_stopped = 1;
2242                 }
2243                 spin_unlock_irqrestore(&pr->netif_queue, flags);
2244         }
2245         dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
2246         spin_unlock(&pr->xmit_lock);
2247
2248         return NETDEV_TX_OK;
2249 }
2250
2251 static void ehea_vlan_rx_register(struct net_device *dev,
2252                                   struct vlan_group *grp)
2253 {
2254         struct ehea_port *port = netdev_priv(dev);
2255         struct ehea_adapter *adapter = port->adapter;
2256         struct hcp_ehea_port_cb1 *cb1;
2257         u64 hret;
2258
2259         port->vgrp = grp;
2260
2261         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2262         if (!cb1) {
2263                 ehea_error("no mem for cb1");
2264                 goto out;
2265         }
2266
2267         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2268                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2269         if (hret != H_SUCCESS)
2270                 ehea_error("modify_ehea_port failed");
2271
2272         free_page((unsigned long)cb1);
2273 out:
2274         return;
2275 }
2276
2277 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2278 {
2279         struct ehea_port *port = netdev_priv(dev);
2280         struct ehea_adapter *adapter = port->adapter;
2281         struct hcp_ehea_port_cb1 *cb1;
2282         int index;
2283         u64 hret;
2284
2285         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2286         if (!cb1) {
2287                 ehea_error("no mem for cb1");
2288                 goto out;
2289         }
2290
2291         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2292                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2293         if (hret != H_SUCCESS) {
2294                 ehea_error("query_ehea_port failed");
2295                 goto out;
2296         }
2297
2298         index = (vid / 64);
2299         cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2300
2301         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2302                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2303         if (hret != H_SUCCESS)
2304                 ehea_error("modify_ehea_port failed");
2305 out:
2306         free_page((unsigned long)cb1);
2307         return;
2308 }
2309
2310 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2311 {
2312         struct ehea_port *port = netdev_priv(dev);
2313         struct ehea_adapter *adapter = port->adapter;
2314         struct hcp_ehea_port_cb1 *cb1;
2315         int index;
2316         u64 hret;
2317
2318         vlan_group_set_device(port->vgrp, vid, NULL);
2319
2320         cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2321         if (!cb1) {
2322                 ehea_error("no mem for cb1");
2323                 goto out;
2324         }
2325
2326         hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2327                                       H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2328         if (hret != H_SUCCESS) {
2329                 ehea_error("query_ehea_port failed");
2330                 goto out;
2331         }
2332
2333         index = (vid / 64);
2334         cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2335
2336         hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2337                                        H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2338         if (hret != H_SUCCESS)
2339                 ehea_error("modify_ehea_port failed");
2340 out:
2341         free_page((unsigned long)cb1);
2342 }
2343
2344 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2345 {
2346         int ret = -EIO;
2347         u64 hret;
2348         u16 dummy16 = 0;
2349         u64 dummy64 = 0;
2350         struct hcp_modify_qp_cb0 *cb0;
2351
2352         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2353         if (!cb0) {
2354                 ret = -ENOMEM;
2355                 goto out;
2356         }
2357
2358         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2359                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2360         if (hret != H_SUCCESS) {
2361                 ehea_error("query_ehea_qp failed (1)");
2362                 goto out;
2363         }
2364
2365         cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2366         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2367                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2368                                      &dummy64, &dummy64, &dummy16, &dummy16);
2369         if (hret != H_SUCCESS) {
2370                 ehea_error("modify_ehea_qp failed (1)");
2371                 goto out;
2372         }
2373
2374         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2375                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2376         if (hret != H_SUCCESS) {
2377                 ehea_error("query_ehea_qp failed (2)");
2378                 goto out;
2379         }
2380
2381         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2382         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2383                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2384                                      &dummy64, &dummy64, &dummy16, &dummy16);
2385         if (hret != H_SUCCESS) {
2386                 ehea_error("modify_ehea_qp failed (2)");
2387                 goto out;
2388         }
2389
2390         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2391                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2392         if (hret != H_SUCCESS) {
2393                 ehea_error("query_ehea_qp failed (3)");
2394                 goto out;
2395         }
2396
2397         cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2398         hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2399                                      EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2400                                      &dummy64, &dummy64, &dummy16, &dummy16);
2401         if (hret != H_SUCCESS) {
2402                 ehea_error("modify_ehea_qp failed (3)");
2403                 goto out;
2404         }
2405
2406         hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2407                                     EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2408         if (hret != H_SUCCESS) {
2409                 ehea_error("query_ehea_qp failed (4)");
2410                 goto out;
2411         }
2412
2413         ret = 0;
2414 out:
2415         free_page((unsigned long)cb0);
2416         return ret;
2417 }
2418
2419 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2420                                int add_tx_qps)
2421 {
2422         int ret, i;
2423         struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2424         enum ehea_eq_type eq_type = EHEA_EQ;
2425
2426         port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2427                                    EHEA_MAX_ENTRIES_EQ, 1);
2428         if (!port->qp_eq) {
2429                 ret = -EINVAL;
2430                 ehea_error("ehea_create_eq failed (qp_eq)");
2431                 goto out_kill_eq;
2432         }
2433
2434         pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2435         pr_cfg.max_entries_scq = sq_entries * 2;
2436         pr_cfg.max_entries_sq = sq_entries;
2437         pr_cfg.max_entries_rq1 = rq1_entries;
2438         pr_cfg.max_entries_rq2 = rq2_entries;
2439         pr_cfg.max_entries_rq3 = rq3_entries;
2440
2441         pr_cfg_small_rx.max_entries_rcq = 1;
2442         pr_cfg_small_rx.max_entries_scq = sq_entries;
2443         pr_cfg_small_rx.max_entries_sq = sq_entries;
2444         pr_cfg_small_rx.max_entries_rq1 = 1;
2445         pr_cfg_small_rx.max_entries_rq2 = 1;
2446         pr_cfg_small_rx.max_entries_rq3 = 1;
2447
2448         for (i = 0; i < def_qps; i++) {
2449                 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2450                 if (ret)
2451                         goto out_clean_pr;
2452         }
2453         for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2454                 ret = ehea_init_port_res(port, &port->port_res[i],
2455                                          &pr_cfg_small_rx, i);
2456                 if (ret)
2457                         goto out_clean_pr;
2458         }
2459
2460         return 0;
2461
2462 out_clean_pr:
2463         while (--i >= 0)
2464                 ehea_clean_portres(port, &port->port_res[i]);
2465
2466 out_kill_eq:
2467         ehea_destroy_eq(port->qp_eq);
2468         return ret;
2469 }
2470
2471 static int ehea_clean_all_portres(struct ehea_port *port)
2472 {
2473         int ret = 0;
2474         int i;
2475
2476         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2477                 ret |= ehea_clean_portres(port, &port->port_res[i]);
2478
2479         ret |= ehea_destroy_eq(port->qp_eq);
2480
2481         return ret;
2482 }
2483
2484 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2485 {
2486         if (adapter->active_ports)
2487                 return;
2488
2489         ehea_rem_mr(&adapter->mr);
2490 }
2491
2492 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2493 {
2494         if (adapter->active_ports)
2495                 return 0;
2496
2497         return ehea_reg_kernel_mr(adapter, &adapter->mr);
2498 }
2499
2500 static int ehea_up(struct net_device *dev)
2501 {
2502         int ret, i;
2503         struct ehea_port *port = netdev_priv(dev);
2504
2505         if (port->state == EHEA_PORT_UP)
2506                 return 0;
2507
2508         ret = ehea_port_res_setup(port, port->num_def_qps,
2509                                   port->num_add_tx_qps);
2510         if (ret) {
2511                 ehea_error("port_res_failed");
2512                 goto out;
2513         }
2514
2515         /* Set default QP for this port */
2516         ret = ehea_configure_port(port);
2517         if (ret) {
2518                 ehea_error("ehea_configure_port failed. ret:%d", ret);
2519                 goto out_clean_pr;
2520         }
2521
2522         ret = ehea_reg_interrupts(dev);
2523         if (ret) {
2524                 ehea_error("reg_interrupts failed. ret:%d", ret);
2525                 goto out_clean_pr;
2526         }
2527
2528         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2529                 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2530                 if (ret) {
2531                         ehea_error("activate_qp failed");
2532                         goto out_free_irqs;
2533                 }
2534         }
2535
2536         for (i = 0; i < port->num_def_qps; i++) {
2537                 ret = ehea_fill_port_res(&port->port_res[i]);
2538                 if (ret) {
2539                         ehea_error("out_free_irqs");
2540                         goto out_free_irqs;
2541                 }
2542         }
2543
2544         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2545         if (ret) {
2546                 ret = -EIO;
2547                 goto out_free_irqs;
2548         }
2549
2550         port->state = EHEA_PORT_UP;
2551
2552         ret = 0;
2553         goto out;
2554
2555 out_free_irqs:
2556         ehea_free_interrupts(dev);
2557
2558 out_clean_pr:
2559         ehea_clean_all_portres(port);
2560 out:
2561         if (ret)
2562                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2563
2564         ehea_update_bcmc_registrations();
2565         ehea_update_firmware_handles();
2566
2567         return ret;
2568 }
2569
2570 static void port_napi_disable(struct ehea_port *port)
2571 {
2572         int i;
2573
2574         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2575                 napi_disable(&port->port_res[i].napi);
2576 }
2577
2578 static void port_napi_enable(struct ehea_port *port)
2579 {
2580         int i;
2581
2582         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2583                 napi_enable(&port->port_res[i].napi);
2584 }
2585
2586 static int ehea_open(struct net_device *dev)
2587 {
2588         int ret;
2589         struct ehea_port *port = netdev_priv(dev);
2590
2591         mutex_lock(&port->port_lock);
2592
2593         if (netif_msg_ifup(port))
2594                 ehea_info("enabling port %s", dev->name);
2595
2596         ret = ehea_up(dev);
2597         if (!ret) {
2598                 port_napi_enable(port);
2599                 netif_start_queue(dev);
2600         }
2601
2602         mutex_unlock(&port->port_lock);
2603
2604         return ret;
2605 }
2606
2607 static int ehea_down(struct net_device *dev)
2608 {
2609         int ret;
2610         struct ehea_port *port = netdev_priv(dev);
2611
2612         if (port->state == EHEA_PORT_DOWN)
2613                 return 0;
2614
2615         ehea_drop_multicast_list(dev);
2616         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2617
2618         ehea_free_interrupts(dev);
2619
2620         port->state = EHEA_PORT_DOWN;
2621
2622         ehea_update_bcmc_registrations();
2623
2624         ret = ehea_clean_all_portres(port);
2625         if (ret)
2626                 ehea_info("Failed freeing resources for %s. ret=%i",
2627                           dev->name, ret);
2628
2629         ehea_update_firmware_handles();
2630
2631         return ret;
2632 }
2633
2634 static int ehea_stop(struct net_device *dev)
2635 {
2636         int ret;
2637         struct ehea_port *port = netdev_priv(dev);
2638
2639         if (netif_msg_ifdown(port))
2640                 ehea_info("disabling port %s", dev->name);
2641
2642         set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2643         cancel_work_sync(&port->reset_task);
2644         mutex_lock(&port->port_lock);
2645         netif_stop_queue(dev);
2646         port_napi_disable(port);
2647         ret = ehea_down(dev);
2648         mutex_unlock(&port->port_lock);
2649         clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2650         return ret;
2651 }
2652
2653 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2654 {
2655         struct ehea_qp qp = *orig_qp;
2656         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2657         struct ehea_swqe *swqe;
2658         int wqe_index;
2659         int i;
2660
2661         for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2662                 swqe = ehea_get_swqe(&qp, &wqe_index);
2663                 swqe->tx_control |= EHEA_SWQE_PURGE;
2664         }
2665 }
2666
2667 static void ehea_flush_sq(struct ehea_port *port)
2668 {
2669         int i;
2670
2671         for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2672                 struct ehea_port_res *pr = &port->port_res[i];
2673                 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2674                 int k = 0;
2675                 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2676                         msleep(5);
2677                         if (++k == 20)
2678                                 break;
2679                 }
2680         }
2681 }
2682
2683 int ehea_stop_qps(struct net_device *dev)
2684 {
2685         struct ehea_port *port = netdev_priv(dev);
2686         struct ehea_adapter *adapter = port->adapter;
2687         struct hcp_modify_qp_cb0 *cb0;
2688         int ret = -EIO;
2689         int dret;
2690         int i;
2691         u64 hret;
2692         u64 dummy64 = 0;
2693         u16 dummy16 = 0;
2694
2695         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2696         if (!cb0) {
2697                 ret = -ENOMEM;
2698                 goto out;
2699         }
2700
2701         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2702                 struct ehea_port_res *pr =  &port->port_res[i];
2703                 struct ehea_qp *qp = pr->qp;
2704
2705                 /* Purge send queue */
2706                 ehea_purge_sq(qp);
2707
2708                 /* Disable queue pair */
2709                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2710                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2711                                             cb0);
2712                 if (hret != H_SUCCESS) {
2713                         ehea_error("query_ehea_qp failed (1)");
2714                         goto out;
2715                 }
2716
2717                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2718                 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2719
2720                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2721                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2722                                                             1), cb0, &dummy64,
2723                                              &dummy64, &dummy16, &dummy16);
2724                 if (hret != H_SUCCESS) {
2725                         ehea_error("modify_ehea_qp failed (1)");
2726                         goto out;
2727                 }
2728
2729                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2730                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2731                                             cb0);
2732                 if (hret != H_SUCCESS) {
2733                         ehea_error("query_ehea_qp failed (2)");
2734                         goto out;
2735                 }
2736
2737                 /* deregister shared memory regions */
2738                 dret = ehea_rem_smrs(pr);
2739                 if (dret) {
2740                         ehea_error("unreg shared memory region failed");
2741                         goto out;
2742                 }
2743         }
2744
2745         ret = 0;
2746 out:
2747         free_page((unsigned long)cb0);
2748
2749         return ret;
2750 }
2751
2752 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2753 {
2754         struct ehea_qp qp = *orig_qp;
2755         struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2756         struct ehea_rwqe *rwqe;
2757         struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2758         struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2759         struct sk_buff *skb;
2760         u32 lkey = pr->recv_mr.lkey;
2761
2762
2763         int i;
2764         int index;
2765
2766         for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2767                 rwqe = ehea_get_next_rwqe(&qp, 2);
2768                 rwqe->sg_list[0].l_key = lkey;
2769                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2770                 skb = skba_rq2[index];
2771                 if (skb)
2772                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2773         }
2774
2775         for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2776                 rwqe = ehea_get_next_rwqe(&qp, 3);
2777                 rwqe->sg_list[0].l_key = lkey;
2778                 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2779                 skb = skba_rq3[index];
2780                 if (skb)
2781                         rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2782         }
2783 }
2784
2785 int ehea_restart_qps(struct net_device *dev)
2786 {
2787         struct ehea_port *port = netdev_priv(dev);
2788         struct ehea_adapter *adapter = port->adapter;
2789         int ret = 0;
2790         int i;
2791
2792         struct hcp_modify_qp_cb0 *cb0;
2793         u64 hret;
2794         u64 dummy64 = 0;
2795         u16 dummy16 = 0;
2796
2797         cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2798         if (!cb0) {
2799                 ret = -ENOMEM;
2800                 goto out;
2801         }
2802
2803         for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2804                 struct ehea_port_res *pr =  &port->port_res[i];
2805                 struct ehea_qp *qp = pr->qp;
2806
2807                 ret = ehea_gen_smrs(pr);
2808                 if (ret) {
2809                         ehea_error("creation of shared memory regions failed");
2810                         goto out;
2811                 }
2812
2813                 ehea_update_rqs(qp, pr);
2814
2815                 /* Enable queue pair */
2816                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2817                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2818                                             cb0);
2819                 if (hret != H_SUCCESS) {
2820                         ehea_error("query_ehea_qp failed (1)");
2821                         goto out;
2822                 }
2823
2824                 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2825                 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2826
2827                 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2828                                              EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2829                                                             1), cb0, &dummy64,
2830                                              &dummy64, &dummy16, &dummy16);
2831                 if (hret != H_SUCCESS) {
2832                         ehea_error("modify_ehea_qp failed (1)");
2833                         goto out;
2834                 }
2835
2836                 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2837                                             EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2838                                             cb0);
2839                 if (hret != H_SUCCESS) {
2840                         ehea_error("query_ehea_qp failed (2)");
2841                         goto out;
2842                 }
2843
2844                 /* refill entire queue */
2845                 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2846                 ehea_refill_rq2(pr, 0);
2847                 ehea_refill_rq3(pr, 0);
2848         }
2849 out:
2850         free_page((unsigned long)cb0);
2851
2852         return ret;
2853 }
2854
2855 static void ehea_reset_port(struct work_struct *work)
2856 {
2857         int ret;
2858         struct ehea_port *port =
2859                 container_of(work, struct ehea_port, reset_task);
2860         struct net_device *dev = port->netdev;
2861
2862         port->resets++;
2863         mutex_lock(&port->port_lock);
2864         netif_stop_queue(dev);
2865
2866         port_napi_disable(port);
2867
2868         ehea_down(dev);
2869
2870         ret = ehea_up(dev);
2871         if (ret)
2872                 goto out;
2873
2874         ehea_set_multicast_list(dev);
2875
2876         if (netif_msg_timer(port))
2877                 ehea_info("Device %s resetted successfully", dev->name);
2878
2879         port_napi_enable(port);
2880
2881         netif_wake_queue(dev);
2882 out:
2883         mutex_unlock(&port->port_lock);
2884 }
2885
2886 static void ehea_rereg_mrs(struct work_struct *work)
2887 {
2888         int ret, i;
2889         struct ehea_adapter *adapter;
2890
2891         ehea_info("LPAR memory changed - re-initializing driver");
2892
2893         list_for_each_entry(adapter, &adapter_list, list)
2894                 if (adapter->active_ports) {
2895                         /* Shutdown all ports */
2896                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2897                                 struct ehea_port *port = adapter->port[i];
2898                                 struct net_device *dev;
2899
2900                                 if (!port)
2901                                         continue;
2902
2903                                 dev = port->netdev;
2904
2905                                 if (dev->flags & IFF_UP) {
2906                                         mutex_lock(&port->port_lock);
2907                                         netif_stop_queue(dev);
2908                                         ehea_flush_sq(port);
2909                                         ret = ehea_stop_qps(dev);
2910                                         if (ret) {
2911                                                 mutex_unlock(&port->port_lock);
2912                                                 goto out;
2913                                         }
2914                                         port_napi_disable(port);
2915                                         mutex_unlock(&port->port_lock);
2916                                 }
2917                         }
2918
2919                         /* Unregister old memory region */
2920                         ret = ehea_rem_mr(&adapter->mr);
2921                         if (ret) {
2922                                 ehea_error("unregister MR failed - driver"
2923                                            " inoperable!");
2924                                 goto out;
2925                         }
2926                 }
2927
2928         clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2929
2930         list_for_each_entry(adapter, &adapter_list, list)
2931                 if (adapter->active_ports) {
2932                         /* Register new memory region */
2933                         ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2934                         if (ret) {
2935                                 ehea_error("register MR failed - driver"
2936                                            " inoperable!");
2937                                 goto out;
2938                         }
2939
2940                         /* Restart all ports */
2941                         for (i = 0; i < EHEA_MAX_PORTS; i++) {
2942                                 struct ehea_port *port = adapter->port[i];
2943
2944                                 if (port) {
2945                                         struct net_device *dev = port->netdev;
2946
2947                                         if (dev->flags & IFF_UP) {
2948                                                 mutex_lock(&port->port_lock);
2949                                                 port_napi_enable(port);
2950                                                 ret = ehea_restart_qps(dev);
2951                                                 if (!ret)
2952                                                         netif_wake_queue(dev);
2953                                                 mutex_unlock(&port->port_lock);
2954                                         }
2955                                 }
2956                         }
2957                 }
2958         ehea_info("re-initializing driver complete");
2959 out:
2960         return;
2961 }
2962
2963 static void ehea_tx_watchdog(struct net_device *dev)
2964 {
2965         struct ehea_port *port = netdev_priv(dev);
2966
2967         if (netif_carrier_ok(dev) &&
2968             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2969                 ehea_schedule_port_reset(port);
2970 }
2971
2972 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2973 {
2974         struct hcp_query_ehea *cb;
2975         u64 hret;
2976         int ret;
2977
2978         cb = (void *)get_zeroed_page(GFP_KERNEL);
2979         if (!cb) {
2980                 ret = -ENOMEM;
2981                 goto out;
2982         }
2983
2984         hret = ehea_h_query_ehea(adapter->handle, cb);
2985
2986         if (hret != H_SUCCESS) {
2987                 ret = -EIO;
2988                 goto out_herr;
2989         }
2990
2991         adapter->max_mc_mac = cb->max_mc_mac - 1;
2992         ret = 0;
2993
2994 out_herr:
2995         free_page((unsigned long)cb);
2996 out:
2997         return ret;
2998 }
2999
3000 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
3001 {
3002         struct hcp_ehea_port_cb4 *cb4;
3003         u64 hret;
3004         int ret = 0;
3005
3006         *jumbo = 0;
3007
3008         /* (Try to) enable *jumbo frames */
3009         cb4 = (void *)get_zeroed_page(GFP_KERNEL);
3010         if (!cb4) {
3011                 ehea_error("no mem for cb4");
3012                 ret = -ENOMEM;
3013                 goto out;
3014         } else {
3015                 hret = ehea_h_query_ehea_port(port->adapter->handle,
3016                                               port->logical_port_id,
3017                                               H_PORT_CB4,
3018                                               H_PORT_CB4_JUMBO, cb4);
3019                 if (hret == H_SUCCESS) {
3020                         if (cb4->jumbo_frame)
3021                                 *jumbo = 1;
3022                         else {
3023                                 cb4->jumbo_frame = 1;
3024                                 hret = ehea_h_modify_ehea_port(port->adapter->
3025                                                                handle,
3026                                                                port->
3027                                                                logical_port_id,
3028                                                                H_PORT_CB4,
3029                                                                H_PORT_CB4_JUMBO,
3030                                                                cb4);
3031                                 if (hret == H_SUCCESS)
3032                                         *jumbo = 1;
3033                         }
3034                 } else
3035                         ret = -EINVAL;
3036
3037                 free_page((unsigned long)cb4);
3038         }
3039 out:
3040         return ret;
3041 }
3042
3043 static ssize_t ehea_show_port_id(struct device *dev,
3044                                  struct device_attribute *attr, char *buf)
3045 {
3046         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3047         return sprintf(buf, "%d", port->logical_port_id);
3048 }
3049
3050 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3051                    NULL);
3052
3053 static void __devinit logical_port_release(struct device *dev)
3054 {
3055         struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3056         of_node_put(port->ofdev.dev.of_node);
3057 }
3058
3059 static struct device *ehea_register_port(struct ehea_port *port,
3060                                          struct device_node *dn)
3061 {
3062         int ret;
3063
3064         port->ofdev.dev.of_node = of_node_get(dn);
3065         port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3066         port->ofdev.dev.bus = &ibmebus_bus_type;
3067
3068         dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3069         port->ofdev.dev.release = logical_port_release;
3070
3071         ret = of_device_register(&port->ofdev);
3072         if (ret) {
3073                 ehea_error("failed to register device. ret=%d", ret);
3074                 goto out;
3075         }
3076
3077         ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3078         if (ret) {
3079                 ehea_error("failed to register attributes, ret=%d", ret);
3080                 goto out_unreg_of_dev;
3081         }
3082
3083         return &port->ofdev.dev;
3084
3085 out_unreg_of_dev:
3086         of_device_unregister(&port->ofdev);
3087 out:
3088         return NULL;
3089 }
3090
3091 static void ehea_unregister_port(struct ehea_port *port)
3092 {
3093         device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3094         of_device_unregister(&port->ofdev);
3095 }
3096
3097 static const struct net_device_ops ehea_netdev_ops = {
3098         .ndo_open               = ehea_open,
3099         .ndo_stop               = ehea_stop,
3100         .ndo_start_xmit         = ehea_start_xmit,
3101 #ifdef CONFIG_NET_POLL_CONTROLLER
3102         .ndo_poll_controller    = ehea_netpoll,
3103 #endif
3104         .ndo_get_stats          = ehea_get_stats,
3105         .ndo_set_mac_address    = ehea_set_mac_addr,
3106         .ndo_validate_addr      = eth_validate_addr,
3107         .ndo_set_multicast_list = ehea_set_multicast_list,
3108         .ndo_change_mtu         = ehea_change_mtu,
3109         .ndo_vlan_rx_register   = ehea_vlan_rx_register,
3110         .ndo_vlan_rx_add_vid    = ehea_vlan_rx_add_vid,
3111         .ndo_vlan_rx_kill_vid   = ehea_vlan_rx_kill_vid,
3112         .ndo_tx_timeout         = ehea_tx_watchdog,
3113 };
3114
3115 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3116                                          u32 logical_port_id,
3117                                          struct device_node *dn)
3118 {
3119         int ret;
3120         struct net_device *dev;
3121         struct ehea_port *port;
3122         struct device *port_dev;
3123         int jumbo;
3124
3125         /* allocate memory for the port structures */
3126         dev = alloc_etherdev(sizeof(struct ehea_port));
3127
3128         if (!dev) {
3129                 ehea_error("no mem for net_device");
3130                 ret = -ENOMEM;
3131                 goto out_err;
3132         }
3133
3134         port = netdev_priv(dev);
3135
3136         mutex_init(&port->port_lock);
3137         port->state = EHEA_PORT_DOWN;
3138         port->sig_comp_iv = sq_entries / 10;
3139
3140         port->adapter = adapter;
3141         port->netdev = dev;
3142         port->logical_port_id = logical_port_id;
3143
3144         port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3145
3146         port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3147         if (!port->mc_list) {
3148                 ret = -ENOMEM;
3149                 goto out_free_ethdev;
3150         }
3151
3152         INIT_LIST_HEAD(&port->mc_list->list);
3153
3154         ret = ehea_sense_port_attr(port);
3155         if (ret)
3156                 goto out_free_mc_list;
3157
3158         port_dev = ehea_register_port(port, dn);
3159         if (!port_dev)
3160                 goto out_free_mc_list;
3161
3162         SET_NETDEV_DEV(dev, port_dev);
3163
3164         /* initialize net_device structure */
3165         memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3166
3167         dev->netdev_ops = &ehea_netdev_ops;
3168         ehea_set_ethtool_ops(dev);
3169
3170         dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3171                       | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3172                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3173                       | NETIF_F_LLTX;
3174         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3175
3176         INIT_WORK(&port->reset_task, ehea_reset_port);
3177
3178         ret = register_netdev(dev);
3179         if (ret) {
3180                 ehea_error("register_netdev failed. ret=%d", ret);
3181                 goto out_unreg_port;
3182         }
3183
3184         port->lro_max_aggr = lro_max_aggr;
3185
3186         ret = ehea_get_jumboframe_status(port, &jumbo);
3187         if (ret)
3188                 ehea_error("failed determining jumbo frame status for %s",
3189                            port->netdev->name);
3190
3191         ehea_info("%s: Jumbo frames are %sabled", dev->name,
3192                   jumbo == 1 ? "en" : "dis");
3193
3194         adapter->active_ports++;
3195
3196         return port;
3197
3198 out_unreg_port:
3199         ehea_unregister_port(port);
3200
3201 out_free_mc_list:
3202         kfree(port->mc_list);
3203
3204 out_free_ethdev:
3205         free_netdev(dev);
3206
3207 out_err:
3208         ehea_error("setting up logical port with id=%d failed, ret=%d",
3209                    logical_port_id, ret);
3210         return NULL;
3211 }
3212
3213 static void ehea_shutdown_single_port(struct ehea_port *port)
3214 {
3215         struct ehea_adapter *adapter = port->adapter;
3216         unregister_netdev(port->netdev);
3217         ehea_unregister_port(port);
3218         kfree(port->mc_list);
3219         free_netdev(port->netdev);
3220         adapter->active_ports--;
3221 }
3222
3223 static int ehea_setup_ports(struct ehea_adapter *adapter)
3224 {
3225         struct device_node *lhea_dn;
3226         struct device_node *eth_dn = NULL;
3227
3228         const u32 *dn_log_port_id;
3229         int i = 0;
3230
3231         lhea_dn = adapter->ofdev->dev.of_node;
3232         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3233
3234                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3235                                                  NULL);
3236                 if (!dn_log_port_id) {
3237                         ehea_error("bad device node: eth_dn name=%s",
3238                                    eth_dn->full_name);
3239                         continue;
3240                 }
3241
3242                 if (ehea_add_adapter_mr(adapter)) {
3243                         ehea_error("creating MR failed");
3244                         of_node_put(eth_dn);
3245                         return -EIO;
3246                 }
3247
3248                 adapter->port[i] = ehea_setup_single_port(adapter,
3249                                                           *dn_log_port_id,
3250                                                           eth_dn);
3251                 if (adapter->port[i])
3252                         ehea_info("%s -> logical port id #%d",
3253                                   adapter->port[i]->netdev->name,
3254                                   *dn_log_port_id);
3255                 else
3256                         ehea_remove_adapter_mr(adapter);
3257
3258                 i++;
3259         }
3260         return 0;
3261 }
3262
3263 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3264                                            u32 logical_port_id)
3265 {
3266         struct device_node *lhea_dn;
3267         struct device_node *eth_dn = NULL;
3268         const u32 *dn_log_port_id;
3269
3270         lhea_dn = adapter->ofdev->dev.of_node;
3271         while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3272
3273                 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3274                                                  NULL);
3275                 if (dn_log_port_id)
3276                         if (*dn_log_port_id == logical_port_id)
3277                                 return eth_dn;
3278         }
3279
3280         return NULL;
3281 }
3282
3283 static ssize_t ehea_probe_port(struct device *dev,
3284                                struct device_attribute *attr,
3285                                const char *buf, size_t count)
3286 {
3287         struct ehea_adapter *adapter = dev_get_drvdata(dev);
3288         struct ehea_port *port;
3289         struct device_node *eth_dn = NULL;
3290         int i;
3291
3292         u32 logical_port_id;
3293
3294         sscanf(buf, "%d", &logical_port_id);
3295
3296         port = ehea_get_port(adapter, logical_port_id);
3297
3298         if (port) {
3299                 ehea_info("adding port with logical port id=%d failed. port "
3300                           "already configured as %s.", logical_port_id,
3301                           port->netdev->name);
3302                 return -EINVAL;
3303         }
3304
3305         eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3306
3307         if (!eth_dn) {
3308                 ehea_info("no logical port with id %d found", logical_port_id);
3309                 return -EINVAL;
3310         }
3311
3312         if (ehea_add_adapter_mr(adapter)) {
3313                 ehea_error("creating MR failed");
3314                 return -EIO;
3315         }
3316
3317         port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3318
3319         of_node_put(eth_dn);
3320
3321         if (port) {
3322                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3323                         if (!adapter->port[i]) {
3324                                 adapter->port[i] = port;
3325                                 break;
3326                         }
3327
3328                 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3329                           logical_port_id);
3330         } else {
3331                 ehea_remove_adapter_mr(adapter);
3332                 return -EIO;
3333         }
3334
3335         return (ssize_t) count;
3336 }
3337
3338 static ssize_t ehea_remove_port(struct device *dev,
3339                                 struct device_attribute *attr,
3340                                 const char *buf, size_t count)
3341 {
3342         struct ehea_adapter *adapter = dev_get_drvdata(dev);
3343         struct ehea_port *port;
3344         int i;
3345         u32 logical_port_id;
3346
3347         sscanf(buf, "%d", &logical_port_id);
3348
3349         port = ehea_get_port(adapter, logical_port_id);
3350
3351         if (port) {
3352                 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3353                           logical_port_id);
3354
3355                 ehea_shutdown_single_port(port);
3356
3357                 for (i = 0; i < EHEA_MAX_PORTS; i++)
3358                         if (adapter->port[i] == port) {
3359                                 adapter->port[i] = NULL;
3360                                 break;
3361                         }
3362         } else {
3363                 ehea_error("removing port with logical port id=%d failed. port "
3364                            "not configured.", logical_port_id);
3365                 return -EINVAL;
3366         }
3367
3368         ehea_remove_adapter_mr(adapter);
3369
3370         return (ssize_t) count;
3371 }
3372
3373 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3374 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3375
3376 int ehea_create_device_sysfs(struct of_device *dev)
3377 {
3378         int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3379         if (ret)
3380                 goto out;
3381
3382         ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3383 out:
3384         return ret;
3385 }
3386
3387 void ehea_remove_device_sysfs(struct of_device *dev)
3388 {
3389         device_remove_file(&dev->dev, &dev_attr_probe_port);
3390         device_remove_file(&dev->dev, &dev_attr_remove_port);
3391 }
3392
3393 static int __devinit ehea_probe_adapter(struct of_device *dev,
3394                                         const struct of_device_id *id)
3395 {
3396         struct ehea_adapter *adapter;
3397         const u64 *adapter_handle;
3398         int ret;
3399
3400         if (!dev || !dev->dev.of_node) {
3401                 ehea_error("Invalid ibmebus device probed");
3402                 return -EINVAL;
3403         }
3404
3405         adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3406         if (!adapter) {
3407                 ret = -ENOMEM;
3408                 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3409                 goto out;
3410         }
3411
3412         list_add(&adapter->list, &adapter_list);
3413
3414         adapter->ofdev = dev;
3415
3416         adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3417                                          NULL);
3418         if (adapter_handle)
3419                 adapter->handle = *adapter_handle;
3420
3421         if (!adapter->handle) {
3422                 dev_err(&dev->dev, "failed getting handle for adapter"
3423                         " '%s'\n", dev->dev.of_node->full_name);
3424                 ret = -ENODEV;
3425                 goto out_free_ad;
3426         }
3427
3428         adapter->pd = EHEA_PD_ID;
3429
3430         dev_set_drvdata(&dev->dev, adapter);
3431
3432
3433         /* initialize adapter and ports */
3434         /* get adapter properties */
3435         ret = ehea_sense_adapter_attr(adapter);
3436         if (ret) {
3437                 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3438                 goto out_free_ad;
3439         }
3440
3441         adapter->neq = ehea_create_eq(adapter,
3442                                       EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3443         if (!adapter->neq) {
3444                 ret = -EIO;
3445                 dev_err(&dev->dev, "NEQ creation failed\n");
3446                 goto out_free_ad;
3447         }
3448
3449         tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3450                      (unsigned long)adapter);
3451
3452         ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3453                                   ehea_interrupt_neq, IRQF_DISABLED,
3454                                   "ehea_neq", adapter);
3455         if (ret) {
3456                 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3457                 goto out_kill_eq;
3458         }
3459
3460         ret = ehea_create_device_sysfs(dev);
3461         if (ret)
3462                 goto out_free_irq;
3463
3464         ret = ehea_setup_ports(adapter);
3465         if (ret) {
3466                 dev_err(&dev->dev, "setup_ports failed\n");
3467                 goto out_rem_dev_sysfs;
3468         }
3469
3470         ret = 0;
3471         goto out;
3472
3473 out_rem_dev_sysfs:
3474         ehea_remove_device_sysfs(dev);
3475
3476 out_free_irq:
3477         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3478
3479 out_kill_eq:
3480         ehea_destroy_eq(adapter->neq);
3481
3482 out_free_ad:
3483         list_del(&adapter->list);
3484         kfree(adapter);
3485
3486 out:
3487         ehea_update_firmware_handles();
3488
3489         return ret;
3490 }
3491
3492 static int __devexit ehea_remove(struct of_device *dev)
3493 {
3494         struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3495         int i;
3496
3497         for (i = 0; i < EHEA_MAX_PORTS; i++)
3498                 if (adapter->port[i]) {
3499                         ehea_shutdown_single_port(adapter->port[i]);
3500                         adapter->port[i] = NULL;
3501                 }
3502
3503         ehea_remove_device_sysfs(dev);
3504
3505         flush_scheduled_work();
3506
3507         ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3508         tasklet_kill(&adapter->neq_tasklet);
3509
3510         ehea_destroy_eq(adapter->neq);
3511         ehea_remove_adapter_mr(adapter);
3512         list_del(&adapter->list);
3513         kfree(adapter);
3514
3515         ehea_update_firmware_handles();
3516
3517         return 0;
3518 }
3519
3520 void ehea_crash_handler(void)
3521 {
3522         int i;
3523
3524         if (ehea_fw_handles.arr)
3525                 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3526                         ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3527                                              ehea_fw_handles.arr[i].fwh,
3528                                              FORCE_FREE);
3529
3530         if (ehea_bcmc_regs.arr)
3531                 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3532                         ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3533                                               ehea_bcmc_regs.arr[i].port_id,
3534                                               ehea_bcmc_regs.arr[i].reg_type,
3535                                               ehea_bcmc_regs.arr[i].macaddr,
3536                                               0, H_DEREG_BCMC);
3537 }
3538
3539 static int ehea_mem_notifier(struct notifier_block *nb,
3540                              unsigned long action, void *data)
3541 {
3542         int ret = NOTIFY_BAD;
3543         struct memory_notify *arg = data;
3544
3545         if (!mutex_trylock(&dlpar_mem_lock)) {
3546                 ehea_info("ehea_mem_notifier must not be called parallelized");
3547                 goto out;
3548         }
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 out:
3578         return ret;
3579 }
3580
3581 static struct notifier_block ehea_mem_nb = {
3582         .notifier_call = ehea_mem_notifier,
3583 };
3584
3585 static int ehea_reboot_notifier(struct notifier_block *nb,
3586                                 unsigned long action, void *unused)
3587 {
3588         if (action == SYS_RESTART) {
3589                 ehea_info("Reboot: freeing all eHEA resources");
3590                 ibmebus_unregister_driver(&ehea_driver);
3591         }
3592         return NOTIFY_DONE;
3593 }
3594
3595 static struct notifier_block ehea_reboot_nb = {
3596         .notifier_call = ehea_reboot_notifier,
3597 };
3598
3599 static int check_module_parm(void)
3600 {
3601         int ret = 0;
3602
3603         if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3604             (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3605                 ehea_info("Bad parameter: rq1_entries");
3606                 ret = -EINVAL;
3607         }
3608         if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3609             (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3610                 ehea_info("Bad parameter: rq2_entries");
3611                 ret = -EINVAL;
3612         }
3613         if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3614             (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3615                 ehea_info("Bad parameter: rq3_entries");
3616                 ret = -EINVAL;
3617         }
3618         if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3619             (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3620                 ehea_info("Bad parameter: sq_entries");
3621                 ret = -EINVAL;
3622         }
3623
3624         return ret;
3625 }
3626
3627 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3628                                       char *buf)
3629 {
3630         return sprintf(buf, "%d", EHEA_CAPABILITIES);
3631 }
3632
3633 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3634                    ehea_show_capabilities, NULL);
3635
3636 int __init ehea_module_init(void)
3637 {
3638         int ret;
3639
3640         printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3641                DRV_VERSION);
3642
3643
3644         INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3645         memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3646         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3647
3648         mutex_init(&ehea_fw_handles.lock);
3649         spin_lock_init(&ehea_bcmc_regs.lock);
3650
3651         ret = check_module_parm();
3652         if (ret)
3653                 goto out;
3654
3655         ret = ehea_create_busmap();
3656         if (ret)
3657                 goto out;
3658
3659         ret = register_reboot_notifier(&ehea_reboot_nb);
3660         if (ret)
3661                 ehea_info("failed registering reboot notifier");
3662
3663         ret = register_memory_notifier(&ehea_mem_nb);
3664         if (ret)
3665                 ehea_info("failed registering memory remove notifier");
3666
3667         ret = crash_shutdown_register(&ehea_crash_handler);
3668         if (ret)
3669                 ehea_info("failed registering crash handler");
3670
3671         ret = ibmebus_register_driver(&ehea_driver);
3672         if (ret) {
3673                 ehea_error("failed registering eHEA device driver on ebus");
3674                 goto out2;
3675         }
3676
3677         ret = driver_create_file(&ehea_driver.driver,
3678                                  &driver_attr_capabilities);
3679         if (ret) {
3680                 ehea_error("failed to register capabilities attribute, ret=%d",
3681                            ret);
3682                 goto out3;
3683         }
3684
3685         return ret;
3686
3687 out3:
3688         ibmebus_unregister_driver(&ehea_driver);
3689 out2:
3690         unregister_memory_notifier(&ehea_mem_nb);
3691         unregister_reboot_notifier(&ehea_reboot_nb);
3692         crash_shutdown_unregister(&ehea_crash_handler);
3693 out:
3694         return ret;
3695 }
3696
3697 static void __exit ehea_module_exit(void)
3698 {
3699         int ret;
3700
3701         flush_scheduled_work();
3702         driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3703         ibmebus_unregister_driver(&ehea_driver);
3704         unregister_reboot_notifier(&ehea_reboot_nb);
3705         ret = crash_shutdown_unregister(&ehea_crash_handler);
3706         if (ret)
3707                 ehea_info("failed unregistering crash handler");
3708         unregister_memory_notifier(&ehea_mem_nb);
3709         kfree(ehea_fw_handles.arr);
3710         kfree(ehea_bcmc_regs.arr);
3711         ehea_destroy_busmap();
3712 }
3713
3714 module_init(ehea_module_init);
3715 module_exit(ehea_module_exit);