git.oblomov.eu Git - linux-2.6/blob - drivers/infiniband/hw/nes/nes.c

   1 /*
   2  * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
   3  * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/ethtool.h>
  39 #include <linux/mii.h>
  40 #include <linux/if_vlan.h>
  41 #include <linux/crc32.h>
  42 #include <linux/in.h>
  43 #include <linux/fs.h>
  44 #include <linux/init.h>
  45 #include <linux/if_arp.h>
  46 #include <linux/highmem.h>
  47 #include <asm/io.h>
  48 #include <asm/irq.h>
  49 #include <asm/byteorder.h>
  50 #include <rdma/ib_smi.h>
  51 #include <rdma/ib_verbs.h>
  52 #include <rdma/ib_pack.h>
  53 #include <rdma/iw_cm.h>
  54
  55 #include "nes.h"
  56
  57 #include <net/netevent.h>
  58 #include <net/neighbour.h>
  59 #include <linux/route.h>
  60 #include <net/ip_fib.h>
  61
  62 MODULE_AUTHOR("NetEffect");
  63 MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
  64 MODULE_LICENSE("Dual BSD/GPL");
  65 MODULE_VERSION(DRV_VERSION);
  66
  67 int max_mtu = 9000;
  68 int nics_per_function = 1;
  69 int interrupt_mod_interval = 0;
  70
  71
  72 /* Interoperability */
  73 int mpa_version = 1;
  74 module_param(mpa_version, int, 0);
  75 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
  76
  77 /* Interoperability */
  78 int disable_mpa_crc = 0;
  79 module_param(disable_mpa_crc, int, 0);
  80 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
  81
  82 unsigned int send_first = 0;
  83 module_param(send_first, int, 0);
  84 MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
  85
  86
  87 unsigned int nes_drv_opt = 0;
  88 module_param(nes_drv_opt, int, 0);
  89 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
  90
  91 unsigned int nes_debug_level = 0;
  92 module_param_named(debug_level, nes_debug_level, uint, 0644);
  93 MODULE_PARM_DESC(debug_level, "Enable debug output level");
  94
  95 LIST_HEAD(nes_adapter_list);
  96 LIST_HEAD(nes_dev_list);
  97
  98 atomic_t qps_destroyed;
  99 atomic_t cqp_reqs_allocated;
 100 atomic_t cqp_reqs_freed;
 101 atomic_t cqp_reqs_dynallocated;
 102 atomic_t cqp_reqs_dynfreed;
 103 atomic_t cqp_reqs_queued;
 104 atomic_t cqp_reqs_redriven;
 105
 106 static void nes_print_macaddr(struct net_device *netdev);
 107 static irqreturn_t nes_interrupt(int, void *);
 108 static int __devinit nes_probe(struct pci_dev *, const struct pci_device_id *);
 109 static void __devexit nes_remove(struct pci_dev *);
 110 static int __init nes_init_module(void);
 111 static void __exit nes_exit_module(void);
 112 static unsigned int ee_flsh_adapter;
 113 static unsigned int sysfs_nonidx_addr;
 114 static unsigned int sysfs_idx_addr;
 115
 116 static struct pci_device_id nes_pci_table[] = {
 117         {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
 118         {0}
 119 };
 120
 121 MODULE_DEVICE_TABLE(pci, nes_pci_table);
 122
 123 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
 124 static int nes_net_event(struct notifier_block *, unsigned long, void *);
 125 static int nes_notifiers_registered;
 126
 127
 128 static struct notifier_block nes_inetaddr_notifier = {
 129         .notifier_call = nes_inetaddr_event
 130 };
 131
 132 static struct notifier_block nes_net_notifier = {
 133         .notifier_call = nes_net_event
 134 };
 135
 136
 137
 138
 139 /**
 140  * nes_inetaddr_event
 141  */
 142 static int nes_inetaddr_event(struct notifier_block *notifier,
 143                 unsigned long event, void *ptr)
 144 {
 145         struct in_ifaddr *ifa = ptr;
 146         struct net_device *event_netdev = ifa->ifa_dev->dev;
 147         struct nes_device *nesdev;
 148         struct net_device *netdev;
 149         struct nes_vnic *nesvnic;
 150         unsigned int addr;
 151         unsigned int mask;
 152
 153         addr = ntohl(ifa->ifa_address);
 154         mask = ntohl(ifa->ifa_mask);
 155         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %08X, netmask %08X.\n",
 156                         addr, mask);
 157         list_for_each_entry(nesdev, &nes_dev_list, list) {
 158                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
 159                                 nesdev, nesdev->netdev[0]->name);
 160                 netdev = nesdev->netdev[0];
 161                 nesvnic = netdev_priv(netdev);
 162                 if (netdev == event_netdev) {
 163                         if (nesvnic->rdma_enabled == 0) {
 164                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
 165                                                 " RDMA is not enabled.\n",
 166                                                 netdev->name);
 167                                 return NOTIFY_OK;
 168                         }
 169                         /* we have ifa->ifa_address/mask here if we need it */
 170                         switch (event) {
 171                                 case NETDEV_DOWN:
 172                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
 173                                         nes_write_indexed(nesdev,
 174                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
 175
 176                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 177                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
 178                                         nesvnic->local_ipaddr = 0;
 179                                         return NOTIFY_OK;
 180                                         break;
 181                                 case NETDEV_UP:
 182                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
 183
 184                                         if (nesvnic->local_ipaddr != 0) {
 185                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
 186                                                 return NOTIFY_OK;
 187                                         }
 188                                         /* Add the address to the IP table */
 189                                         nesvnic->local_ipaddr = ifa->ifa_address;
 190
 191                                         nes_write_indexed(nesdev,
 192                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
 193                                                         ntohl(ifa->ifa_address));
 194                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 195                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
 196                                         return NOTIFY_OK;
 197                                         break;
 198                                 default:
 199                                         break;
 200                         }
 201                 }
 202         }
 203
 204         return NOTIFY_DONE;
 205 }
 206
 207
 208 /**
 209  * nes_net_event
 210  */
 211 static int nes_net_event(struct notifier_block *notifier,
 212                 unsigned long event, void *ptr)
 213 {
 214         struct neighbour *neigh = ptr;
 215         struct nes_device *nesdev;
 216         struct net_device *netdev;
 217         struct nes_vnic *nesvnic;
 218
 219         switch (event) {
 220                 case NETEVENT_NEIGH_UPDATE:
 221                         list_for_each_entry(nesdev, &nes_dev_list, list) {
 222                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
 223                                 netdev = nesdev->netdev[0];
 224                                 nesvnic = netdev_priv(netdev);
 225                                 if (netdev == neigh->dev) {
 226                                         if (nesvnic->rdma_enabled == 0) {
 227                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
 228                                                                 netdev->name);
 229                                         } else {
 230                                                 if (neigh->nud_state & NUD_VALID) {
 231                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 232                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
 233                                                 } else {
 234                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 235                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
 236                                                 }
 237                                         }
 238                                         return NOTIFY_OK;
 239                                 }
 240                         }
 241                         break;
 242                 default:
 243                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
 244                         break;
 245         }
 246
 247         return NOTIFY_DONE;
 248 }
 249
 250
 251 /**
 252  * nes_add_ref
 253  */
 254 void nes_add_ref(struct ib_qp *ibqp)
 255 {
 256         struct nes_qp *nesqp;
 257
 258         nesqp = to_nesqp(ibqp);
 259         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
 260                         ibqp->qp_num, atomic_read(&nesqp->refcount));
 261         atomic_inc(&nesqp->refcount);
 262 }
 263
 264 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
 265 {
 266         unsigned long flags;
 267         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 268         struct nes_adapter *nesadapter = nesdev->nesadapter;
 269         u32 qp_id;
 270
 271         atomic_inc(&qps_destroyed);
 272
 273         /* Free the control structures */
 274
 275         qp_id = nesqp->hwqp.qp_id;
 276         if (nesqp->pbl_vbase) {
 277                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 278                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 279                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 280                 nesadapter->free_256pbl++;
 281                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 282                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 283                 nesqp->pbl_vbase = NULL;
 284
 285         } else {
 286                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 287                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 288         }
 289         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
 290
 291         kfree(nesqp->allocated_buffer);
 292
 293 }
 294
 295 /**
 296  * nes_rem_ref
 297  */
 298 void nes_rem_ref(struct ib_qp *ibqp)
 299 {
 300         u64 u64temp;
 301         struct nes_qp *nesqp;
 302         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 303         struct nes_device *nesdev = nesvnic->nesdev;
 304         struct nes_adapter *nesadapter = nesdev->nesadapter;
 305         struct nes_hw_cqp_wqe *cqp_wqe;
 306         struct nes_cqp_request *cqp_request;
 307         u32 opcode;
 308
 309         nesqp = to_nesqp(ibqp);
 310
 311         if (atomic_read(&nesqp->refcount) == 0) {
 312                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
 313                                 __FUNCTION__, ibqp->qp_num, nesqp->last_aeq);
 314                 BUG();
 315         }
 316
 317         if (atomic_dec_and_test(&nesqp->refcount)) {
 318                 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
 319
 320                 /* Destroy the QP */
 321                 cqp_request = nes_get_cqp_request(nesdev);
 322                 if (cqp_request == NULL) {
 323                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
 324                         return;
 325                 }
 326                 cqp_request->waiting = 0;
 327                 cqp_request->callback = 1;
 328                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
 329                 cqp_request->cqp_callback_pointer = nesqp;
 330                 cqp_wqe = &cqp_request->cqp_wqe;
 331
 332                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 333                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
 334
 335                 if (nesqp->hte_added) {
 336                         opcode  |= NES_CQP_QP_DEL_HTE;
 337                         nesqp->hte_added = 0;
 338                 }
 339                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 340                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
 341                 u64temp = (u64)nesqp->nesqp_context_pbase;
 342                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
 343                 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
 344         }
 345 }
 346
 347
 348 /**
 349  * nes_get_qp
 350  */
 351 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
 352 {
 353         struct nes_vnic *nesvnic = to_nesvnic(device);
 354         struct nes_device *nesdev = nesvnic->nesdev;
 355         struct nes_adapter *nesadapter = nesdev->nesadapter;
 356
 357         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
 358                 return NULL;
 359
 360         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
 361 }
 362
 363
 364 /**
 365  * nes_print_macaddr
 366  */
 367 static void nes_print_macaddr(struct net_device *netdev)
 368 {
 369         nes_debug(NES_DBG_INIT, "%s: MAC %02X:%02X:%02X:%02X:%02X:%02X, IRQ %u\n",
 370                         netdev->name,
 371                         netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
 372                         netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5],
 373                         netdev->irq);
 374 }
 375
 376
 377 /**
 378  * nes_interrupt - handle interrupts
 379  */
 380 static irqreturn_t nes_interrupt(int irq, void *dev_id)
 381 {
 382         struct nes_device *nesdev = (struct nes_device *)dev_id;
 383         int handled = 0;
 384         u32 int_mask;
 385         u32 int_req;
 386         u32 int_stat;
 387         u32 intf_int_stat;
 388         u32 timer_stat;
 389
 390         if (nesdev->msi_enabled) {
 391                 /* No need to read the interrupt pending register if msi is enabled */
 392                 handled = 1;
 393         } else {
 394                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
 395                         /* Master interrupt enable provides synchronization for kicking off bottom half
 396                           when interrupt sharing is going on */
 397                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
 398                         if (int_mask & 0x80000000) {
 399                                 /* Check interrupt status to see if this might be ours */
 400                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
 401                                 int_req = nesdev->int_req;
 402                                 if (int_stat&int_req) {
 403                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
 404                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
 405                                                 handled = 1;
 406                                         } else {
 407                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
 408                                                         /* Timer might be running but might be for another function */
 409                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
 410                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
 411                                                                 handled = 1;
 412                                                         }
 413                                                 }
 414                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
 415                                                                 (handled == 0)) {
 416                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
 417                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
 418                                                                 handled = 1;
 419                                                         }
 420                                                 }
 421                                         }
 422                                         if (handled) {
 423                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
 424                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
 425                                                 /* Save off the status to save an additional read */
 426                                                 nesdev->int_stat = int_stat;
 427                                                 nesdev->napi_isr_ran = 1;
 428                                         }
 429                                 }
 430                         }
 431                 } else {
 432                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
 433                 }
 434         }
 435
 436         if (handled) {
 437
 438                 if (nes_napi_isr(nesdev) == 0) {
 439                         tasklet_schedule(&nesdev->dpc_tasklet);
 440
 441                 }
 442                 return IRQ_HANDLED;
 443         } else {
 444                 return IRQ_NONE;
 445         }
 446 }
 447
 448
 449 /**
 450  * nes_probe - Device initialization
 451  */
 452 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 453 {
 454         struct net_device *netdev = NULL;
 455         struct nes_device *nesdev = NULL;
 456         int ret = 0;
 457         struct nes_vnic *nesvnic = NULL;
 458         void __iomem *mmio_regs = NULL;
 459         u8 hw_rev;
 460
 461         assert(pcidev != NULL);
 462         assert(ent != NULL);
 463
 464         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
 465                         DRV_VERSION, pci_name(pcidev));
 466
 467         ret = pci_enable_device(pcidev);
 468         if (ret) {
 469                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
 470                 goto bail0;
 471         }
 472
 473         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
 474                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
 475                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
 476         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
 477                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
 478                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
 479
 480         /* Make sure PCI base addr are MMIO */
 481         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
 482                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
 483                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
 484                 ret = -ENODEV;
 485                 goto bail1;
 486         }
 487
 488         /* Reserve PCI I/O and memory resources */
 489         ret = pci_request_regions(pcidev, DRV_NAME);
 490         if (ret) {
 491                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
 492                 goto bail1;
 493         }
 494
 495         if ((sizeof(dma_addr_t) > 4)) {
 496                 ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK);
 497                 if (ret < 0) {
 498                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
 499                         goto bail2;
 500                 }
 501                 ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK);
 502                 if (ret) {
 503                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
 504                         goto bail2;
 505                 }
 506         } else {
 507                 ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
 508                 if (ret < 0) {
 509                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
 510                         goto bail2;
 511                 }
 512                 ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK);
 513                 if (ret) {
 514                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
 515                         goto bail2;
 516                 }
 517         }
 518
 519         pci_set_master(pcidev);
 520
 521         /* Allocate hardware structure */
 522         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
 523         if (!nesdev) {
 524                 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
 525                 ret = -ENOMEM;
 526                 goto bail2;
 527         }
 528
 529         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
 530         nesdev->pcidev = pcidev;
 531         pci_set_drvdata(pcidev, nesdev);
 532
 533         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
 534         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
 535
 536         spin_lock_init(&nesdev->indexed_regs_lock);
 537
 538         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
 539         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
 540         if (mmio_regs == NULL) {
 541                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
 542                 ret = -EIO;
 543                 goto bail3;
 544         }
 545         nesdev->regs = mmio_regs;
 546         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
 547
 548         /* Ensure interrupts are disabled */
 549         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
 550
 551         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
 552                 if (!pci_enable_msi(nesdev->pcidev)) {
 553                         nesdev->msi_enabled = 1;
 554                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
 555                                         pci_name(pcidev));
 556                 } else {
 557                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
 558                                         pci_name(pcidev));
 559                 }
 560         } else {
 561                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
 562                                 pci_name(pcidev));
 563         }
 564
 565         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
 566         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
 567
 568         /* Init the adapter */
 569         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
 570         if (!nesdev->nesadapter) {
 571                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
 572                 ret = -ENOMEM;
 573                 goto bail5;
 574         }
 575         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
 576
 577         /* nesdev->base_doorbell_index =
 578                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 579         nesdev->base_doorbell_index = 1;
 580         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 581         nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
 582
 583         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 584
 585         /* bring up the Control QP */
 586         if (nes_init_cqp(nesdev)) {
 587                 ret = -ENODEV;
 588                 goto bail6;
 589         }
 590
 591         /* Arm the CCQ */
 592         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 593                         PCI_FUNC(nesdev->pcidev->devfn));
 594         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 595
 596         /* Enable the interrupts */
 597         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 598                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 599         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 600                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
 601         }
 602
 603         /* TODO: This really should be the first driver to load, not function 0 */
 604         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 605                 /* pick up PCI and critical errors if the first driver to load */
 606                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 607                 nesdev->int_req |= NES_INT_INTF;
 608         } else {
 609                 nesdev->intf_int_req = 0;
 610         }
 611         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 612         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 613         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 614         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 615         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 616
 617         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 618
 619         /* deal with both periodic and one_shot */
 620         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 621         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 622         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 623                         PCI_FUNC(nesdev->pcidev->devfn),
 624                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 625
 626         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 627
 628         list_add_tail(&nesdev->list, &nes_dev_list);
 629
 630         /* Request an interrupt line for the driver */
 631         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 632         if (ret) {
 633                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 634                                 pci_name(pcidev), pcidev->irq);
 635                 goto bail65;
 636         }
 637
 638         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 639
 640         if (nes_notifiers_registered == 0) {
 641                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 642                 register_netevent_notifier(&nes_net_notifier);
 643         }
 644         nes_notifiers_registered++;
 645
 646         /* Initialize network devices */
 647                 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
 648                         goto bail7;
 649                 }
 650
 651                 /* Register network device */
 652                 ret = register_netdev(netdev);
 653                 if (ret) {
 654                         printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 655                         nes_netdev_destroy(netdev);
 656                         goto bail7;
 657                 }
 658
 659                 nes_print_macaddr(netdev);
 660                 /* create a CM core for this netdev */
 661                 nesvnic = netdev_priv(netdev);
 662
 663                 nesdev->netdev_count++;
 664                 nesdev->nesadapter->netdev_count++;
 665
 666
 667         printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 668                         pci_name(pcidev));
 669         return 0;
 670
 671         bail7:
 672         printk(KERN_ERR PFX "bail7\n");
 673         while (nesdev->netdev_count > 0) {
 674                 nesdev->netdev_count--;
 675                 nesdev->nesadapter->netdev_count--;
 676
 677                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 678                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 679         }
 680
 681         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 682                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 683
 684         nes_notifiers_registered--;
 685         if (nes_notifiers_registered == 0) {
 686                 unregister_netevent_notifier(&nes_net_notifier);
 687                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 688         }
 689
 690         list_del(&nesdev->list);
 691         nes_destroy_cqp(nesdev);
 692
 693         bail65:
 694         printk(KERN_ERR PFX "bail65\n");
 695         free_irq(pcidev->irq, nesdev);
 696         if (nesdev->msi_enabled) {
 697                 pci_disable_msi(pcidev);
 698         }
 699         bail6:
 700         printk(KERN_ERR PFX "bail6\n");
 701         tasklet_kill(&nesdev->dpc_tasklet);
 702         /* Deallocate the Adapter Structure */
 703         nes_destroy_adapter(nesdev->nesadapter);
 704
 705         bail5:
 706         printk(KERN_ERR PFX "bail5\n");
 707         iounmap(nesdev->regs);
 708
 709         bail3:
 710         printk(KERN_ERR PFX "bail3\n");
 711         kfree(nesdev);
 712
 713         bail2:
 714         pci_release_regions(pcidev);
 715
 716         bail1:
 717         pci_disable_device(pcidev);
 718
 719         bail0:
 720         return ret;
 721 }
 722
 723
 724 /**
 725  * nes_remove - unload from kernel
 726  */
 727 static void __devexit nes_remove(struct pci_dev *pcidev)
 728 {
 729         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 730         struct net_device *netdev;
 731         int netdev_index = 0;
 732
 733                 if (nesdev->netdev_count) {
 734                         netdev = nesdev->netdev[netdev_index];
 735                         if (netdev) {
 736                                 netif_stop_queue(netdev);
 737                                 unregister_netdev(netdev);
 738                                 nes_netdev_destroy(netdev);
 739
 740                                 nesdev->netdev[netdev_index] = NULL;
 741                                 nesdev->netdev_count--;
 742                                 nesdev->nesadapter->netdev_count--;
 743                         }
 744                 }
 745
 746         nes_notifiers_registered--;
 747         if (nes_notifiers_registered == 0) {
 748                 unregister_netevent_notifier(&nes_net_notifier);
 749                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 750         }
 751
 752         list_del(&nesdev->list);
 753         nes_destroy_cqp(nesdev);
 754         tasklet_kill(&nesdev->dpc_tasklet);
 755
 756         /* Deallocate the Adapter Structure */
 757         nes_destroy_adapter(nesdev->nesadapter);
 758
 759         free_irq(pcidev->irq, nesdev);
 760
 761         if (nesdev->msi_enabled) {
 762                 pci_disable_msi(pcidev);
 763         }
 764
 765         iounmap(nesdev->regs);
 766         kfree(nesdev);
 767
 768         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 769         pci_release_regions(pcidev);
 770         pci_disable_device(pcidev);
 771         pci_set_drvdata(pcidev, NULL);
 772 }
 773
 774
 775 static struct pci_driver nes_pci_driver = {
 776         .name = DRV_NAME,
 777         .id_table = nes_pci_table,
 778         .probe = nes_probe,
 779         .remove = __devexit_p(nes_remove),
 780 };
 781
 782 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 783 {
 784         unsigned int  devfn = 0xffffffff;
 785         unsigned char bus_number = 0xff;
 786         unsigned int  i = 0;
 787         struct nes_device *nesdev;
 788
 789         list_for_each_entry(nesdev, &nes_dev_list, list) {
 790                 if (i == ee_flsh_adapter) {
 791                         devfn      = nesdev->nesadapter->devfn;
 792                         bus_number = nesdev->nesadapter->bus_number;
 793                         break;
 794                 }
 795                 i++;
 796         }
 797
 798         return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
 799 }
 800
 801 static ssize_t nes_store_adapter(struct device_driver *ddp,
 802         const char *buf, size_t count)
 803 {
 804         char *p = (char *)buf;
 805
 806         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 807         return strnlen(buf, count);
 808 }
 809
 810 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 811 {
 812         u32 eeprom_cmd = 0xdead;
 813         u32 i = 0;
 814         struct nes_device *nesdev;
 815
 816         list_for_each_entry(nesdev, &nes_dev_list, list) {
 817                 if (i == ee_flsh_adapter) {
 818                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 819                         break;
 820                 }
 821                 i++;
 822         }
 823         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 824 }
 825
 826 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 827         const char *buf, size_t count)
 828 {
 829         char *p = (char *)buf;
 830         u32 val;
 831         u32 i = 0;
 832         struct nes_device *nesdev;
 833
 834         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 835                 val = simple_strtoul(p, &p, 16);
 836                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 837                         if (i == ee_flsh_adapter) {
 838                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 839                                 break;
 840                         }
 841                         i++;
 842                 }
 843         }
 844         return strnlen(buf, count);
 845 }
 846
 847 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 848 {
 849         u32 eeprom_data = 0xdead;
 850         u32 i = 0;
 851         struct nes_device *nesdev;
 852
 853         list_for_each_entry(nesdev, &nes_dev_list, list) {
 854                 if (i == ee_flsh_adapter) {
 855                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 856                         break;
 857                 }
 858                 i++;
 859         }
 860
 861         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 862 }
 863
 864 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 865         const char *buf, size_t count)
 866 {
 867         char *p = (char *)buf;
 868         u32 val;
 869         u32 i = 0;
 870         struct nes_device *nesdev;
 871
 872         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 873                 val = simple_strtoul(p, &p, 16);
 874                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 875                         if (i == ee_flsh_adapter) {
 876                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 877                                 break;
 878                         }
 879                         i++;
 880                 }
 881         }
 882         return strnlen(buf, count);
 883 }
 884
 885 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 886 {
 887         u32 flash_cmd = 0xdead;
 888         u32 i = 0;
 889         struct nes_device *nesdev;
 890
 891         list_for_each_entry(nesdev, &nes_dev_list, list) {
 892                 if (i == ee_flsh_adapter) {
 893                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 894                         break;
 895                 }
 896                 i++;
 897         }
 898
 899         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 900 }
 901
 902 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 903         const char *buf, size_t count)
 904 {
 905         char *p = (char *)buf;
 906         u32 val;
 907         u32 i = 0;
 908         struct nes_device *nesdev;
 909
 910         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 911                 val = simple_strtoul(p, &p, 16);
 912                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 913                         if (i == ee_flsh_adapter) {
 914                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 915                                 break;
 916                         }
 917                         i++;
 918                 }
 919         }
 920         return strnlen(buf, count);
 921 }
 922
 923 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 924 {
 925         u32 flash_data = 0xdead;
 926         u32 i = 0;
 927         struct nes_device *nesdev;
 928
 929         list_for_each_entry(nesdev, &nes_dev_list, list) {
 930                 if (i == ee_flsh_adapter) {
 931                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 932                         break;
 933                 }
 934                 i++;
 935         }
 936
 937         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 938 }
 939
 940 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 941         const char *buf, size_t count)
 942 {
 943         char *p = (char *)buf;
 944         u32 val;
 945         u32 i = 0;
 946         struct nes_device *nesdev;
 947
 948         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 949                 val = simple_strtoul(p, &p, 16);
 950                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 951                         if (i == ee_flsh_adapter) {
 952                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 953                                 break;
 954                         }
 955                         i++;
 956                 }
 957         }
 958         return strnlen(buf, count);
 959 }
 960
 961 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 962 {
 963         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
 964 }
 965
 966 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
 967         const char *buf, size_t count)
 968 {
 969         char *p = (char *)buf;
 970
 971         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
 972                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
 973
 974         return strnlen(buf, count);
 975 }
 976
 977 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
 978 {
 979         u32 nonidx_data = 0xdead;
 980         u32 i = 0;
 981         struct nes_device *nesdev;
 982
 983         list_for_each_entry(nesdev, &nes_dev_list, list) {
 984                 if (i == ee_flsh_adapter) {
 985                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
 986                         break;
 987                 }
 988                 i++;
 989         }
 990
 991         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
 992 }
 993
 994 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
 995         const char *buf, size_t count)
 996 {
 997         char *p = (char *)buf;
 998         u32 val;
 999         u32 i = 0;
1000         struct nes_device *nesdev;
1001
1002         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1003                 val = simple_strtoul(p, &p, 16);
1004                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1005                         if (i == ee_flsh_adapter) {
1006                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1007                                 break;
1008                         }
1009                         i++;
1010                 }
1011         }
1012         return strnlen(buf, count);
1013 }
1014
1015 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1016 {
1017         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1018 }
1019
1020 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1021         const char *buf, size_t count)
1022 {
1023         char *p = (char *)buf;
1024
1025         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1026                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1027
1028         return strnlen(buf, count);
1029 }
1030
1031 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1032 {
1033         u32 idx_data = 0xdead;
1034         u32 i = 0;
1035         struct nes_device *nesdev;
1036
1037         list_for_each_entry(nesdev, &nes_dev_list, list) {
1038                 if (i == ee_flsh_adapter) {
1039                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1040                         break;
1041                 }
1042                 i++;
1043         }
1044
1045         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1046 }
1047
1048 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1049         const char *buf, size_t count)
1050 {
1051         char *p = (char *)buf;
1052         u32 val;
1053         u32 i = 0;
1054         struct nes_device *nesdev;
1055
1056         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1057                 val = simple_strtoul(p, &p, 16);
1058                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1059                         if (i == ee_flsh_adapter) {
1060                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1061                                 break;
1062                         }
1063                         i++;
1064                 }
1065         }
1066         return strnlen(buf, count);
1067 }
1068
1069 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1070                    nes_show_adapter, nes_store_adapter);
1071 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1072                    nes_show_ee_cmd, nes_store_ee_cmd);
1073 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1074                    nes_show_ee_data, nes_store_ee_data);
1075 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1076                    nes_show_flash_cmd, nes_store_flash_cmd);
1077 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1078                    nes_show_flash_data, nes_store_flash_data);
1079 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1080                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1081 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1082                    nes_show_nonidx_data, nes_store_nonidx_data);
1083 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1084                    nes_show_idx_addr, nes_store_idx_addr);
1085 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1086                    nes_show_idx_data, nes_store_idx_data);
1087
1088 static int nes_create_driver_sysfs(struct pci_driver *drv)
1089 {
1090         int error;
1091         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1092         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1093         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1094         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1095         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1096         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1097         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1098         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1099         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1100         return error;
1101 }
1102
1103 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1104 {
1105         driver_remove_file(&drv->driver, &driver_attr_adapter);
1106         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1107         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1108         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1109         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1110         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1111         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1112         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1113         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1114 }
1115
1116 /**
1117  * nes_init_module - module initialization entry point
1118  */
1119 static int __init nes_init_module(void)
1120 {
1121         int retval;
1122         int retval1;
1123
1124         retval = nes_cm_start();
1125         if (retval) {
1126                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1127                 return retval;
1128         }
1129         retval = pci_register_driver(&nes_pci_driver);
1130         if (retval >= 0) {
1131                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1132                 if (retval1 < 0)
1133                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1134         }
1135         return retval;
1136 }
1137
1138
1139 /**
1140  * nes_exit_module - module unload entry point
1141  */
1142 static void __exit nes_exit_module(void)
1143 {
1144         nes_cm_stop();
1145         nes_remove_driver_sysfs(&nes_pci_driver);
1146
1147         pci_unregister_driver(&nes_pci_driver);
1148 }
1149
1150
1151 module_init(nes_init_module);
1152 module_exit(nes_exit_module);