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   1 /*
   2  * Copyright (c) 2006 - 2009 Intel Corporation.  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 <linux/slab.h>
  48 #include <asm/io.h>
  49 #include <asm/irq.h>
  50 #include <asm/byteorder.h>
  51 #include <rdma/ib_smi.h>
  52 #include <rdma/ib_verbs.h>
  53 #include <rdma/ib_pack.h>
  54 #include <rdma/iw_cm.h>
  55
  56 #include "nes.h"
  57
  58 #include <net/netevent.h>
  59 #include <net/neighbour.h>
  60 #include <linux/route.h>
  61 #include <net/ip_fib.h>
  62
  63 MODULE_AUTHOR("NetEffect");
  64 MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
  65 MODULE_LICENSE("Dual BSD/GPL");
  66 MODULE_VERSION(DRV_VERSION);
  67
  68 int max_mtu = 9000;
  69 int interrupt_mod_interval = 0;
  70
  71
  72 /* Interoperability */
  73 int mpa_version = 1;
  74 module_param(mpa_version, int, 0644);
  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, 0644);
  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, 0644);
  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, 0644);
  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 unsigned int wqm_quanta = 0x10000;
  96 module_param(wqm_quanta, int, 0644);
  97 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
  98
  99 static unsigned int limit_maxrdreqsz;
 100 module_param(limit_maxrdreqsz, bool, 0644);
 101 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
 102
 103 LIST_HEAD(nes_adapter_list);
 104 static LIST_HEAD(nes_dev_list);
 105
 106 atomic_t qps_destroyed;
 107
 108 static unsigned int ee_flsh_adapter;
 109 static unsigned int sysfs_nonidx_addr;
 110 static unsigned int sysfs_idx_addr;
 111
 112 static struct pci_device_id nes_pci_table[] = {
 113         {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
 114         {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR, PCI_ANY_ID, PCI_ANY_ID},
 115         {0}
 116 };
 117
 118 MODULE_DEVICE_TABLE(pci, nes_pci_table);
 119
 120 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
 121 static int nes_net_event(struct notifier_block *, unsigned long, void *);
 122 static int nes_notifiers_registered;
 123
 124
 125 static struct notifier_block nes_inetaddr_notifier = {
 126         .notifier_call = nes_inetaddr_event
 127 };
 128
 129 static struct notifier_block nes_net_notifier = {
 130         .notifier_call = nes_net_event
 131 };
 132
 133
 134
 135
 136 /**
 137  * nes_inetaddr_event
 138  */
 139 static int nes_inetaddr_event(struct notifier_block *notifier,
 140                 unsigned long event, void *ptr)
 141 {
 142         struct in_ifaddr *ifa = ptr;
 143         struct net_device *event_netdev = ifa->ifa_dev->dev;
 144         struct nes_device *nesdev;
 145         struct net_device *netdev;
 146         struct nes_vnic *nesvnic;
 147
 148         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
 149                   &ifa->ifa_address, &ifa->ifa_mask);
 150         list_for_each_entry(nesdev, &nes_dev_list, list) {
 151                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
 152                                 nesdev, nesdev->netdev[0]->name);
 153                 netdev = nesdev->netdev[0];
 154                 nesvnic = netdev_priv(netdev);
 155                 if (netdev == event_netdev) {
 156                         if (nesvnic->rdma_enabled == 0) {
 157                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
 158                                                 " RDMA is not enabled.\n",
 159                                                 netdev->name);
 160                                 return NOTIFY_OK;
 161                         }
 162                         /* we have ifa->ifa_address/mask here if we need it */
 163                         switch (event) {
 164                                 case NETDEV_DOWN:
 165                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
 166                                         nes_write_indexed(nesdev,
 167                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
 168
 169                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 170                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
 171                                         nesvnic->local_ipaddr = 0;
 172                                         return NOTIFY_OK;
 173                                         break;
 174                                 case NETDEV_UP:
 175                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
 176
 177                                         if (nesvnic->local_ipaddr != 0) {
 178                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
 179                                                 return NOTIFY_OK;
 180                                         }
 181                                         /* Add the address to the IP table */
 182                                         nesvnic->local_ipaddr = ifa->ifa_address;
 183
 184                                         nes_write_indexed(nesdev,
 185                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
 186                                                         ntohl(ifa->ifa_address));
 187                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 188                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
 189                                         return NOTIFY_OK;
 190                                         break;
 191                                 default:
 192                                         break;
 193                         }
 194                 }
 195         }
 196
 197         return NOTIFY_DONE;
 198 }
 199
 200
 201 /**
 202  * nes_net_event
 203  */
 204 static int nes_net_event(struct notifier_block *notifier,
 205                 unsigned long event, void *ptr)
 206 {
 207         struct neighbour *neigh = ptr;
 208         struct nes_device *nesdev;
 209         struct net_device *netdev;
 210         struct nes_vnic *nesvnic;
 211
 212         switch (event) {
 213                 case NETEVENT_NEIGH_UPDATE:
 214                         list_for_each_entry(nesdev, &nes_dev_list, list) {
 215                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
 216                                 netdev = nesdev->netdev[0];
 217                                 nesvnic = netdev_priv(netdev);
 218                                 if (netdev == neigh->dev) {
 219                                         if (nesvnic->rdma_enabled == 0) {
 220                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
 221                                                                 netdev->name);
 222                                         } else {
 223                                                 if (neigh->nud_state & NUD_VALID) {
 224                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 225                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
 226                                                 } else {
 227                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 228                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
 229                                                 }
 230                                         }
 231                                         return NOTIFY_OK;
 232                                 }
 233                         }
 234                         break;
 235                 default:
 236                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
 237                         break;
 238         }
 239
 240         return NOTIFY_DONE;
 241 }
 242
 243
 244 /**
 245  * nes_add_ref
 246  */
 247 void nes_add_ref(struct ib_qp *ibqp)
 248 {
 249         struct nes_qp *nesqp;
 250
 251         nesqp = to_nesqp(ibqp);
 252         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
 253                         ibqp->qp_num, atomic_read(&nesqp->refcount));
 254         atomic_inc(&nesqp->refcount);
 255 }
 256
 257 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
 258 {
 259         unsigned long flags;
 260         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 261         struct nes_adapter *nesadapter = nesdev->nesadapter;
 262         u32 qp_id;
 263
 264         atomic_inc(&qps_destroyed);
 265
 266         /* Free the control structures */
 267
 268         qp_id = nesqp->hwqp.qp_id;
 269         if (nesqp->pbl_vbase) {
 270                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 271                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 272                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 273                 nesadapter->free_256pbl++;
 274                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 275                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 276                 nesqp->pbl_vbase = NULL;
 277
 278         } else {
 279                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 280                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 281         }
 282         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
 283
 284         nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
 285         kfree(nesqp->allocated_buffer);
 286
 287 }
 288
 289 /**
 290  * nes_rem_ref
 291  */
 292 void nes_rem_ref(struct ib_qp *ibqp)
 293 {
 294         u64 u64temp;
 295         struct nes_qp *nesqp;
 296         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 297         struct nes_device *nesdev = nesvnic->nesdev;
 298         struct nes_hw_cqp_wqe *cqp_wqe;
 299         struct nes_cqp_request *cqp_request;
 300         u32 opcode;
 301
 302         nesqp = to_nesqp(ibqp);
 303
 304         if (atomic_read(&nesqp->refcount) == 0) {
 305                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
 306                                 __func__, ibqp->qp_num, nesqp->last_aeq);
 307                 BUG();
 308         }
 309
 310         if (atomic_dec_and_test(&nesqp->refcount)) {
 311                 /* Destroy the QP */
 312                 cqp_request = nes_get_cqp_request(nesdev);
 313                 if (cqp_request == NULL) {
 314                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
 315                         return;
 316                 }
 317                 cqp_request->waiting = 0;
 318                 cqp_request->callback = 1;
 319                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
 320                 cqp_request->cqp_callback_pointer = nesqp;
 321                 cqp_wqe = &cqp_request->cqp_wqe;
 322
 323                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 324                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
 325
 326                 if (nesqp->hte_added) {
 327                         opcode  |= NES_CQP_QP_DEL_HTE;
 328                         nesqp->hte_added = 0;
 329                 }
 330                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 331                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
 332                 u64temp = (u64)nesqp->nesqp_context_pbase;
 333                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
 334                 nes_post_cqp_request(nesdev, cqp_request);
 335         }
 336 }
 337
 338
 339 /**
 340  * nes_get_qp
 341  */
 342 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
 343 {
 344         struct nes_vnic *nesvnic = to_nesvnic(device);
 345         struct nes_device *nesdev = nesvnic->nesdev;
 346         struct nes_adapter *nesadapter = nesdev->nesadapter;
 347
 348         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
 349                 return NULL;
 350
 351         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
 352 }
 353
 354
 355 /**
 356  * nes_print_macaddr
 357  */
 358 static void nes_print_macaddr(struct net_device *netdev)
 359 {
 360         nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
 361                   netdev->name, netdev->dev_addr, netdev->irq);
 362 }
 363
 364 /**
 365  * nes_interrupt - handle interrupts
 366  */
 367 static irqreturn_t nes_interrupt(int irq, void *dev_id)
 368 {
 369         struct nes_device *nesdev = (struct nes_device *)dev_id;
 370         int handled = 0;
 371         u32 int_mask;
 372         u32 int_req;
 373         u32 int_stat;
 374         u32 intf_int_stat;
 375         u32 timer_stat;
 376
 377         if (nesdev->msi_enabled) {
 378                 /* No need to read the interrupt pending register if msi is enabled */
 379                 handled = 1;
 380         } else {
 381                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
 382                         /* Master interrupt enable provides synchronization for kicking off bottom half
 383                           when interrupt sharing is going on */
 384                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
 385                         if (int_mask & 0x80000000) {
 386                                 /* Check interrupt status to see if this might be ours */
 387                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
 388                                 int_req = nesdev->int_req;
 389                                 if (int_stat&int_req) {
 390                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
 391                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
 392                                                 handled = 1;
 393                                         } else {
 394                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
 395                                                         /* Timer might be running but might be for another function */
 396                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
 397                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
 398                                                                 handled = 1;
 399                                                         }
 400                                                 }
 401                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
 402                                                                 (handled == 0)) {
 403                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
 404                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
 405                                                                 handled = 1;
 406                                                         }
 407                                                 }
 408                                         }
 409                                         if (handled) {
 410                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
 411                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
 412                                                 /* Save off the status to save an additional read */
 413                                                 nesdev->int_stat = int_stat;
 414                                                 nesdev->napi_isr_ran = 1;
 415                                         }
 416                                 }
 417                         }
 418                 } else {
 419                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
 420                 }
 421         }
 422
 423         if (handled) {
 424
 425                 if (nes_napi_isr(nesdev) == 0) {
 426                         tasklet_schedule(&nesdev->dpc_tasklet);
 427
 428                 }
 429                 return IRQ_HANDLED;
 430         } else {
 431                 return IRQ_NONE;
 432         }
 433 }
 434
 435
 436 /**
 437  * nes_probe - Device initialization
 438  */
 439 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 440 {
 441         struct net_device *netdev = NULL;
 442         struct nes_device *nesdev = NULL;
 443         int ret = 0;
 444         struct nes_vnic *nesvnic = NULL;
 445         void __iomem *mmio_regs = NULL;
 446         u8 hw_rev;
 447
 448         assert(pcidev != NULL);
 449         assert(ent != NULL);
 450
 451         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
 452                         DRV_VERSION, pci_name(pcidev));
 453
 454         ret = pci_enable_device(pcidev);
 455         if (ret) {
 456                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
 457                 goto bail0;
 458         }
 459
 460         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
 461                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
 462                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
 463         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
 464                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
 465                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
 466
 467         /* Make sure PCI base addr are MMIO */
 468         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
 469                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
 470                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
 471                 ret = -ENODEV;
 472                 goto bail1;
 473         }
 474
 475         /* Reserve PCI I/O and memory resources */
 476         ret = pci_request_regions(pcidev, DRV_NAME);
 477         if (ret) {
 478                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
 479                 goto bail1;
 480         }
 481
 482         if ((sizeof(dma_addr_t) > 4)) {
 483                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
 484                 if (ret < 0) {
 485                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
 486                         goto bail2;
 487                 }
 488                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
 489                 if (ret) {
 490                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
 491                         goto bail2;
 492                 }
 493         } else {
 494                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
 495                 if (ret < 0) {
 496                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
 497                         goto bail2;
 498                 }
 499                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
 500                 if (ret) {
 501                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
 502                         goto bail2;
 503                 }
 504         }
 505
 506         pci_set_master(pcidev);
 507
 508         /* Allocate hardware structure */
 509         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
 510         if (!nesdev) {
 511                 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
 512                 ret = -ENOMEM;
 513                 goto bail2;
 514         }
 515
 516         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
 517         nesdev->pcidev = pcidev;
 518         pci_set_drvdata(pcidev, nesdev);
 519
 520         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
 521         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
 522
 523         spin_lock_init(&nesdev->indexed_regs_lock);
 524
 525         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
 526         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
 527                                     pci_resource_len(pcidev, BAR_0));
 528         if (mmio_regs == NULL) {
 529                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
 530                 ret = -EIO;
 531                 goto bail3;
 532         }
 533         nesdev->regs = mmio_regs;
 534         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
 535
 536         /* Ensure interrupts are disabled */
 537         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
 538
 539         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
 540                 if (!pci_enable_msi(nesdev->pcidev)) {
 541                         nesdev->msi_enabled = 1;
 542                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
 543                                         pci_name(pcidev));
 544                 } else {
 545                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
 546                                         pci_name(pcidev));
 547                 }
 548         } else {
 549                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
 550                                 pci_name(pcidev));
 551         }
 552
 553         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
 554         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
 555
 556         /* Init the adapter */
 557         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
 558         if (!nesdev->nesadapter) {
 559                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
 560                 ret = -ENOMEM;
 561                 goto bail5;
 562         }
 563         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
 564         nesdev->nesadapter->wqm_quanta = wqm_quanta;
 565
 566         /* nesdev->base_doorbell_index =
 567                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 568         nesdev->base_doorbell_index = 1;
 569         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 570         if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
 571                 switch (PCI_FUNC(nesdev->pcidev->devfn) %
 572                         nesdev->nesadapter->port_count) {
 573                 case 1:
 574                         nesdev->mac_index = 2;
 575                         break;
 576                 case 2:
 577                         nesdev->mac_index = 1;
 578                         break;
 579                 case 3:
 580                         nesdev->mac_index = 3;
 581                         break;
 582                 case 0:
 583                 default:
 584                         nesdev->mac_index = 0;
 585                 }
 586         } else {
 587                 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
 588                                                 nesdev->nesadapter->port_count;
 589         }
 590
 591         if ((limit_maxrdreqsz ||
 592              ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
 593               (hw_rev == NE020_REV1))) &&
 594             (pcie_get_readrq(pcidev) > 256)) {
 595                 if (pcie_set_readrq(pcidev, 256))
 596                         printk(KERN_ERR PFX "Unable to set max read request"
 597                                 " to 256 bytes\n");
 598                 else
 599                         nes_debug(NES_DBG_INIT, "Max read request size set"
 600                                 " to 256 bytes\n");
 601         }
 602
 603         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 604
 605         /* bring up the Control QP */
 606         if (nes_init_cqp(nesdev)) {
 607                 ret = -ENODEV;
 608                 goto bail6;
 609         }
 610
 611         /* Arm the CCQ */
 612         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 613                         PCI_FUNC(nesdev->pcidev->devfn));
 614         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 615
 616         /* Enable the interrupts */
 617         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 618                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 619         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 620                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
 621         }
 622
 623         /* TODO: This really should be the first driver to load, not function 0 */
 624         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 625                 /* pick up PCI and critical errors if the first driver to load */
 626                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 627                 nesdev->int_req |= NES_INT_INTF;
 628         } else {
 629                 nesdev->intf_int_req = 0;
 630         }
 631         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 632         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 633         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 634         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 635         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 636
 637         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 638
 639         /* deal with both periodic and one_shot */
 640         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 641         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 642         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 643                         PCI_FUNC(nesdev->pcidev->devfn),
 644                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 645
 646         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 647
 648         list_add_tail(&nesdev->list, &nes_dev_list);
 649
 650         /* Request an interrupt line for the driver */
 651         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 652         if (ret) {
 653                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 654                                 pci_name(pcidev), pcidev->irq);
 655                 goto bail65;
 656         }
 657
 658         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 659
 660         if (nes_notifiers_registered == 0) {
 661                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 662                 register_netevent_notifier(&nes_net_notifier);
 663         }
 664         nes_notifiers_registered++;
 665
 666         /* Initialize network devices */
 667                 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
 668                         goto bail7;
 669                 }
 670
 671                 /* Register network device */
 672                 ret = register_netdev(netdev);
 673                 if (ret) {
 674                         printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 675                         nes_netdev_destroy(netdev);
 676                         goto bail7;
 677                 }
 678
 679                 nes_print_macaddr(netdev);
 680                 /* create a CM core for this netdev */
 681                 nesvnic = netdev_priv(netdev);
 682
 683                 nesdev->netdev_count++;
 684                 nesdev->nesadapter->netdev_count++;
 685
 686
 687         printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 688                         pci_name(pcidev));
 689         return 0;
 690
 691         bail7:
 692         printk(KERN_ERR PFX "bail7\n");
 693         while (nesdev->netdev_count > 0) {
 694                 nesdev->netdev_count--;
 695                 nesdev->nesadapter->netdev_count--;
 696
 697                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 698                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 699         }
 700
 701         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 702                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 703
 704         nes_notifiers_registered--;
 705         if (nes_notifiers_registered == 0) {
 706                 unregister_netevent_notifier(&nes_net_notifier);
 707                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 708         }
 709
 710         list_del(&nesdev->list);
 711         nes_destroy_cqp(nesdev);
 712
 713         bail65:
 714         printk(KERN_ERR PFX "bail65\n");
 715         free_irq(pcidev->irq, nesdev);
 716         if (nesdev->msi_enabled) {
 717                 pci_disable_msi(pcidev);
 718         }
 719         bail6:
 720         printk(KERN_ERR PFX "bail6\n");
 721         tasklet_kill(&nesdev->dpc_tasklet);
 722         /* Deallocate the Adapter Structure */
 723         nes_destroy_adapter(nesdev->nesadapter);
 724
 725         bail5:
 726         printk(KERN_ERR PFX "bail5\n");
 727         iounmap(nesdev->regs);
 728
 729         bail3:
 730         printk(KERN_ERR PFX "bail3\n");
 731         kfree(nesdev);
 732
 733         bail2:
 734         pci_release_regions(pcidev);
 735
 736         bail1:
 737         pci_disable_device(pcidev);
 738
 739         bail0:
 740         return ret;
 741 }
 742
 743
 744 /**
 745  * nes_remove - unload from kernel
 746  */
 747 static void __devexit nes_remove(struct pci_dev *pcidev)
 748 {
 749         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 750         struct net_device *netdev;
 751         int netdev_index = 0;
 752
 753                 if (nesdev->netdev_count) {
 754                         netdev = nesdev->netdev[netdev_index];
 755                         if (netdev) {
 756                                 netif_stop_queue(netdev);
 757                                 unregister_netdev(netdev);
 758                                 nes_netdev_destroy(netdev);
 759
 760                                 nesdev->netdev[netdev_index] = NULL;
 761                                 nesdev->netdev_count--;
 762                                 nesdev->nesadapter->netdev_count--;
 763                         }
 764                 }
 765
 766         nes_notifiers_registered--;
 767         if (nes_notifiers_registered == 0) {
 768                 unregister_netevent_notifier(&nes_net_notifier);
 769                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 770         }
 771
 772         list_del(&nesdev->list);
 773         nes_destroy_cqp(nesdev);
 774
 775         free_irq(pcidev->irq, nesdev);
 776         tasklet_kill(&nesdev->dpc_tasklet);
 777
 778         /* Deallocate the Adapter Structure */
 779         nes_destroy_adapter(nesdev->nesadapter);
 780
 781         if (nesdev->msi_enabled) {
 782                 pci_disable_msi(pcidev);
 783         }
 784
 785         iounmap(nesdev->regs);
 786         kfree(nesdev);
 787
 788         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 789         pci_release_regions(pcidev);
 790         pci_disable_device(pcidev);
 791         pci_set_drvdata(pcidev, NULL);
 792 }
 793
 794
 795 static struct pci_driver nes_pci_driver = {
 796         .name = DRV_NAME,
 797         .id_table = nes_pci_table,
 798         .probe = nes_probe,
 799         .remove = __devexit_p(nes_remove),
 800 };
 801
 802 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 803 {
 804         unsigned int  devfn = 0xffffffff;
 805         unsigned char bus_number = 0xff;
 806         unsigned int  i = 0;
 807         struct nes_device *nesdev;
 808
 809         list_for_each_entry(nesdev, &nes_dev_list, list) {
 810                 if (i == ee_flsh_adapter) {
 811                         devfn = nesdev->pcidev->devfn;
 812                         bus_number = nesdev->pcidev->bus->number;
 813                         break;
 814                 }
 815                 i++;
 816         }
 817
 818         return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
 819 }
 820
 821 static ssize_t nes_store_adapter(struct device_driver *ddp,
 822         const char *buf, size_t count)
 823 {
 824         char *p = (char *)buf;
 825
 826         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 827         return strnlen(buf, count);
 828 }
 829
 830 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 831 {
 832         u32 eeprom_cmd = 0xdead;
 833         u32 i = 0;
 834         struct nes_device *nesdev;
 835
 836         list_for_each_entry(nesdev, &nes_dev_list, list) {
 837                 if (i == ee_flsh_adapter) {
 838                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 839                         break;
 840                 }
 841                 i++;
 842         }
 843         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 844 }
 845
 846 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 847         const char *buf, size_t count)
 848 {
 849         char *p = (char *)buf;
 850         u32 val;
 851         u32 i = 0;
 852         struct nes_device *nesdev;
 853
 854         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 855                 val = simple_strtoul(p, &p, 16);
 856                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 857                         if (i == ee_flsh_adapter) {
 858                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 859                                 break;
 860                         }
 861                         i++;
 862                 }
 863         }
 864         return strnlen(buf, count);
 865 }
 866
 867 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 868 {
 869         u32 eeprom_data = 0xdead;
 870         u32 i = 0;
 871         struct nes_device *nesdev;
 872
 873         list_for_each_entry(nesdev, &nes_dev_list, list) {
 874                 if (i == ee_flsh_adapter) {
 875                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 876                         break;
 877                 }
 878                 i++;
 879         }
 880
 881         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 882 }
 883
 884 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 885         const char *buf, size_t count)
 886 {
 887         char *p = (char *)buf;
 888         u32 val;
 889         u32 i = 0;
 890         struct nes_device *nesdev;
 891
 892         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 893                 val = simple_strtoul(p, &p, 16);
 894                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 895                         if (i == ee_flsh_adapter) {
 896                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 897                                 break;
 898                         }
 899                         i++;
 900                 }
 901         }
 902         return strnlen(buf, count);
 903 }
 904
 905 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 906 {
 907         u32 flash_cmd = 0xdead;
 908         u32 i = 0;
 909         struct nes_device *nesdev;
 910
 911         list_for_each_entry(nesdev, &nes_dev_list, list) {
 912                 if (i == ee_flsh_adapter) {
 913                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 914                         break;
 915                 }
 916                 i++;
 917         }
 918
 919         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 920 }
 921
 922 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 923         const char *buf, size_t count)
 924 {
 925         char *p = (char *)buf;
 926         u32 val;
 927         u32 i = 0;
 928         struct nes_device *nesdev;
 929
 930         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 931                 val = simple_strtoul(p, &p, 16);
 932                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 933                         if (i == ee_flsh_adapter) {
 934                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 935                                 break;
 936                         }
 937                         i++;
 938                 }
 939         }
 940         return strnlen(buf, count);
 941 }
 942
 943 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 944 {
 945         u32 flash_data = 0xdead;
 946         u32 i = 0;
 947         struct nes_device *nesdev;
 948
 949         list_for_each_entry(nesdev, &nes_dev_list, list) {
 950                 if (i == ee_flsh_adapter) {
 951                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 952                         break;
 953                 }
 954                 i++;
 955         }
 956
 957         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 958 }
 959
 960 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 961         const char *buf, size_t count)
 962 {
 963         char *p = (char *)buf;
 964         u32 val;
 965         u32 i = 0;
 966         struct nes_device *nesdev;
 967
 968         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 969                 val = simple_strtoul(p, &p, 16);
 970                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 971                         if (i == ee_flsh_adapter) {
 972                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 973                                 break;
 974                         }
 975                         i++;
 976                 }
 977         }
 978         return strnlen(buf, count);
 979 }
 980
 981 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 982 {
 983         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
 984 }
 985
 986 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
 987         const char *buf, size_t count)
 988 {
 989         char *p = (char *)buf;
 990
 991         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
 992                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
 993
 994         return strnlen(buf, count);
 995 }
 996
 997 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
 998 {
 999         u32 nonidx_data = 0xdead;
1000         u32 i = 0;
1001         struct nes_device *nesdev;
1002
1003         list_for_each_entry(nesdev, &nes_dev_list, list) {
1004                 if (i == ee_flsh_adapter) {
1005                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
1006                         break;
1007                 }
1008                 i++;
1009         }
1010
1011         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1012 }
1013
1014 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1015         const char *buf, size_t count)
1016 {
1017         char *p = (char *)buf;
1018         u32 val;
1019         u32 i = 0;
1020         struct nes_device *nesdev;
1021
1022         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1023                 val = simple_strtoul(p, &p, 16);
1024                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1025                         if (i == ee_flsh_adapter) {
1026                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1027                                 break;
1028                         }
1029                         i++;
1030                 }
1031         }
1032         return strnlen(buf, count);
1033 }
1034
1035 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1036 {
1037         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1038 }
1039
1040 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1041         const char *buf, size_t count)
1042 {
1043         char *p = (char *)buf;
1044
1045         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1046                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1047
1048         return strnlen(buf, count);
1049 }
1050
1051 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1052 {
1053         u32 idx_data = 0xdead;
1054         u32 i = 0;
1055         struct nes_device *nesdev;
1056
1057         list_for_each_entry(nesdev, &nes_dev_list, list) {
1058                 if (i == ee_flsh_adapter) {
1059                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1060                         break;
1061                 }
1062                 i++;
1063         }
1064
1065         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1066 }
1067
1068 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1069         const char *buf, size_t count)
1070 {
1071         char *p = (char *)buf;
1072         u32 val;
1073         u32 i = 0;
1074         struct nes_device *nesdev;
1075
1076         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1077                 val = simple_strtoul(p, &p, 16);
1078                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1079                         if (i == ee_flsh_adapter) {
1080                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1081                                 break;
1082                         }
1083                         i++;
1084                 }
1085         }
1086         return strnlen(buf, count);
1087 }
1088
1089
1090 /**
1091  * nes_show_wqm_quanta
1092  */
1093 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1094 {
1095         u32 wqm_quanta_value = 0xdead;
1096         u32 i = 0;
1097         struct nes_device *nesdev;
1098
1099         list_for_each_entry(nesdev, &nes_dev_list, list) {
1100                 if (i == ee_flsh_adapter) {
1101                         wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1102                         break;
1103                 }
1104                 i++;
1105         }
1106
1107         return  snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta);
1108 }
1109
1110
1111 /**
1112  * nes_store_wqm_quanta
1113  */
1114 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1115                                         const char *buf, size_t count)
1116 {
1117         unsigned long wqm_quanta_value;
1118         u32 wqm_config1;
1119         u32 i = 0;
1120         struct nes_device *nesdev;
1121
1122         strict_strtoul(buf, 0, &wqm_quanta_value);
1123         list_for_each_entry(nesdev, &nes_dev_list, list) {
1124                 if (i == ee_flsh_adapter) {
1125                         nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1126                         wqm_config1 = nes_read_indexed(nesdev,
1127                                                 NES_IDX_WQM_CONFIG1);
1128                         nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1129                                         ((wqm_quanta_value << 1) |
1130                                         (wqm_config1 & 0x00000001)));
1131                         break;
1132                 }
1133                 i++;
1134         }
1135         return strnlen(buf, count);
1136 }
1137
1138 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1139                    nes_show_adapter, nes_store_adapter);
1140 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1141                    nes_show_ee_cmd, nes_store_ee_cmd);
1142 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1143                    nes_show_ee_data, nes_store_ee_data);
1144 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1145                    nes_show_flash_cmd, nes_store_flash_cmd);
1146 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1147                    nes_show_flash_data, nes_store_flash_data);
1148 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1149                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1150 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1151                    nes_show_nonidx_data, nes_store_nonidx_data);
1152 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1153                    nes_show_idx_addr, nes_store_idx_addr);
1154 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1155                    nes_show_idx_data, nes_store_idx_data);
1156 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1157                    nes_show_wqm_quanta, nes_store_wqm_quanta);
1158
1159 static int nes_create_driver_sysfs(struct pci_driver *drv)
1160 {
1161         int error;
1162         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1163         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1164         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1165         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1166         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1167         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1168         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1169         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1170         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1171         error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1172         return error;
1173 }
1174
1175 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1176 {
1177         driver_remove_file(&drv->driver, &driver_attr_adapter);
1178         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1179         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1180         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1181         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1182         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1183         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1184         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1185         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1186         driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1187 }
1188
1189 /**
1190  * nes_init_module - module initialization entry point
1191  */
1192 static int __init nes_init_module(void)
1193 {
1194         int retval;
1195         int retval1;
1196
1197         retval = nes_cm_start();
1198         if (retval) {
1199                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1200                 return retval;
1201         }
1202         retval = pci_register_driver(&nes_pci_driver);
1203         if (retval >= 0) {
1204                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1205                 if (retval1 < 0)
1206                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1207         }
1208         return retval;
1209 }
1210
1211
1212 /**
1213  * nes_exit_module - module unload entry point
1214  */
1215 static void __exit nes_exit_module(void)
1216 {
1217         nes_cm_stop();
1218         nes_remove_driver_sysfs(&nes_pci_driver);
1219
1220         pci_unregister_driver(&nes_pci_driver);
1221 }
1222
1223
1224 module_init(nes_init_module);
1225 module_exit(nes_exit_module);