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