drivers/net/ehea/ehea_main.c

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