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 interrupt_mod_interval = 0;
  69
  70
  71 /* Interoperability */
  72 int mpa_version = 1;
  73 module_param(mpa_version, int, 0644);
  74 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
  75
  76 /* Interoperability */
  77 int disable_mpa_crc = 0;
  78 module_param(disable_mpa_crc, int, 0644);
  79 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
  80
  81 unsigned int send_first = 0;
  82 module_param(send_first, int, 0644);
  83 MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
  84
  85
  86 unsigned int nes_drv_opt = 0;
  87 module_param(nes_drv_opt, int, 0644);
  88 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
  89
  90 unsigned int nes_debug_level = 0;
  91 module_param_named(debug_level, nes_debug_level, uint, 0644);
  92 MODULE_PARM_DESC(debug_level, "Enable debug output level");
  93
  94 unsigned int wqm_quanta = 0x10000;
  95 module_param(wqm_quanta, int, 0644);
  96 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
  97
  98 static unsigned int limit_maxrdreqsz;
  99 module_param(limit_maxrdreqsz, bool, 0644);
 100 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
 101
 102 LIST_HEAD(nes_adapter_list);
 103 static LIST_HEAD(nes_dev_list);
 104
 105 atomic_t qps_destroyed;
 106
 107 static unsigned int ee_flsh_adapter;
 108 static unsigned int sysfs_nonidx_addr;
 109 static unsigned int sysfs_idx_addr;
 110
 111 static struct pci_device_id nes_pci_table[] = {
 112         {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
 113         {0}
 114 };
 115
 116 MODULE_DEVICE_TABLE(pci, nes_pci_table);
 117
 118 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
 119 static int nes_net_event(struct notifier_block *, unsigned long, void *);
 120 static int nes_notifiers_registered;
 121
 122
 123 static struct notifier_block nes_inetaddr_notifier = {
 124         .notifier_call = nes_inetaddr_event
 125 };
 126
 127 static struct notifier_block nes_net_notifier = {
 128         .notifier_call = nes_net_event
 129 };
 130
 131
 132
 133
 134 /**
 135  * nes_inetaddr_event
 136  */
 137 static int nes_inetaddr_event(struct notifier_block *notifier,
 138                 unsigned long event, void *ptr)
 139 {
 140         struct in_ifaddr *ifa = ptr;
 141         struct net_device *event_netdev = ifa->ifa_dev->dev;
 142         struct nes_device *nesdev;
 143         struct net_device *netdev;
 144         struct nes_vnic *nesvnic;
 145         unsigned int addr;
 146         unsigned int mask;
 147
 148         addr = ntohl(ifa->ifa_address);
 149         mask = ntohl(ifa->ifa_mask);
 150         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address " NIPQUAD_FMT
 151                   ", netmask " NIPQUAD_FMT ".\n",
 152                   HIPQUAD(addr), HIPQUAD(mask));
 153         list_for_each_entry(nesdev, &nes_dev_list, list) {
 154                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
 155                                 nesdev, nesdev->netdev[0]->name);
 156                 netdev = nesdev->netdev[0];
 157                 nesvnic = netdev_priv(netdev);
 158                 if (netdev == event_netdev) {
 159                         if (nesvnic->rdma_enabled == 0) {
 160                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
 161                                                 " RDMA is not enabled.\n",
 162                                                 netdev->name);
 163                                 return NOTIFY_OK;
 164                         }
 165                         /* we have ifa->ifa_address/mask here if we need it */
 166                         switch (event) {
 167                                 case NETDEV_DOWN:
 168                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
 169                                         nes_write_indexed(nesdev,
 170                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
 171
 172                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 173                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
 174                                         nesvnic->local_ipaddr = 0;
 175                                         return NOTIFY_OK;
 176                                         break;
 177                                 case NETDEV_UP:
 178                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
 179
 180                                         if (nesvnic->local_ipaddr != 0) {
 181                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
 182                                                 return NOTIFY_OK;
 183                                         }
 184                                         /* Add the address to the IP table */
 185                                         nesvnic->local_ipaddr = ifa->ifa_address;
 186
 187                                         nes_write_indexed(nesdev,
 188                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
 189                                                         ntohl(ifa->ifa_address));
 190                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 191                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
 192                                         return NOTIFY_OK;
 193                                         break;
 194                                 default:
 195                                         break;
 196                         }
 197                 }
 198         }
 199
 200         return NOTIFY_DONE;
 201 }
 202
 203
 204 /**
 205  * nes_net_event
 206  */
 207 static int nes_net_event(struct notifier_block *notifier,
 208                 unsigned long event, void *ptr)
 209 {
 210         struct neighbour *neigh = ptr;
 211         struct nes_device *nesdev;
 212         struct net_device *netdev;
 213         struct nes_vnic *nesvnic;
 214
 215         switch (event) {
 216                 case NETEVENT_NEIGH_UPDATE:
 217                         list_for_each_entry(nesdev, &nes_dev_list, list) {
 218                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
 219                                 netdev = nesdev->netdev[0];
 220                                 nesvnic = netdev_priv(netdev);
 221                                 if (netdev == neigh->dev) {
 222                                         if (nesvnic->rdma_enabled == 0) {
 223                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
 224                                                                 netdev->name);
 225                                         } else {
 226                                                 if (neigh->nud_state & NUD_VALID) {
 227                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 228                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
 229                                                 } else {
 230                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 231                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
 232                                                 }
 233                                         }
 234                                         return NOTIFY_OK;
 235                                 }
 236                         }
 237                         break;
 238                 default:
 239                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
 240                         break;
 241         }
 242
 243         return NOTIFY_DONE;
 244 }
 245
 246
 247 /**
 248  * nes_add_ref
 249  */
 250 void nes_add_ref(struct ib_qp *ibqp)
 251 {
 252         struct nes_qp *nesqp;
 253
 254         nesqp = to_nesqp(ibqp);
 255         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
 256                         ibqp->qp_num, atomic_read(&nesqp->refcount));
 257         atomic_inc(&nesqp->refcount);
 258 }
 259
 260 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
 261 {
 262         unsigned long flags;
 263         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 264         struct nes_adapter *nesadapter = nesdev->nesadapter;
 265         u32 qp_id;
 266
 267         atomic_inc(&qps_destroyed);
 268
 269         /* Free the control structures */
 270
 271         qp_id = nesqp->hwqp.qp_id;
 272         if (nesqp->pbl_vbase) {
 273                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 274                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 275                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 276                 nesadapter->free_256pbl++;
 277                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 278                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 279                 nesqp->pbl_vbase = NULL;
 280
 281         } else {
 282                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 283                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 284         }
 285         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
 286
 287         nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
 288         kfree(nesqp->allocated_buffer);
 289
 290 }
 291
 292 /**
 293  * nes_rem_ref
 294  */
 295 void nes_rem_ref(struct ib_qp *ibqp)
 296 {
 297         u64 u64temp;
 298         struct nes_qp *nesqp;
 299         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 300         struct nes_device *nesdev = nesvnic->nesdev;
 301         struct nes_hw_cqp_wqe *cqp_wqe;
 302         struct nes_cqp_request *cqp_request;
 303         u32 opcode;
 304
 305         nesqp = to_nesqp(ibqp);
 306
 307         if (atomic_read(&nesqp->refcount) == 0) {
 308                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
 309                                 __func__, ibqp->qp_num, nesqp->last_aeq);
 310                 BUG();
 311         }
 312
 313         if (atomic_dec_and_test(&nesqp->refcount)) {
 314                 /* Destroy the QP */
 315                 cqp_request = nes_get_cqp_request(nesdev);
 316                 if (cqp_request == NULL) {
 317                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
 318                         return;
 319                 }
 320                 cqp_request->waiting = 0;
 321                 cqp_request->callback = 1;
 322                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
 323                 cqp_request->cqp_callback_pointer = nesqp;
 324                 cqp_wqe = &cqp_request->cqp_wqe;
 325
 326                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 327                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
 328
 329                 if (nesqp->hte_added) {
 330                         opcode  |= NES_CQP_QP_DEL_HTE;
 331                         nesqp->hte_added = 0;
 332                 }
 333                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 334                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
 335                 u64temp = (u64)nesqp->nesqp_context_pbase;
 336                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
 337                 nes_post_cqp_request(nesdev, cqp_request);
 338         }
 339 }
 340
 341
 342 /**
 343  * nes_get_qp
 344  */
 345 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
 346 {
 347         struct nes_vnic *nesvnic = to_nesvnic(device);
 348         struct nes_device *nesdev = nesvnic->nesdev;
 349         struct nes_adapter *nesadapter = nesdev->nesadapter;
 350
 351         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
 352                 return NULL;
 353
 354         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
 355 }
 356
 357
 358 /**
 359  * nes_print_macaddr
 360  */
 361 static void nes_print_macaddr(struct net_device *netdev)
 362 {
 363         DECLARE_MAC_BUF(mac);
 364
 365         nes_debug(NES_DBG_INIT, "%s: %s, IRQ %u\n",
 366                   netdev->name, print_mac(mac, netdev->dev_addr), netdev->irq);
 367 }
 368
 369 /**
 370  * nes_interrupt - handle interrupts
 371  */
 372 static irqreturn_t nes_interrupt(int irq, void *dev_id)
 373 {
 374         struct nes_device *nesdev = (struct nes_device *)dev_id;
 375         int handled = 0;
 376         u32 int_mask;
 377         u32 int_req;
 378         u32 int_stat;
 379         u32 intf_int_stat;
 380         u32 timer_stat;
 381
 382         if (nesdev->msi_enabled) {
 383                 /* No need to read the interrupt pending register if msi is enabled */
 384                 handled = 1;
 385         } else {
 386                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
 387                         /* Master interrupt enable provides synchronization for kicking off bottom half
 388                           when interrupt sharing is going on */
 389                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
 390                         if (int_mask & 0x80000000) {
 391                                 /* Check interrupt status to see if this might be ours */
 392                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
 393                                 int_req = nesdev->int_req;
 394                                 if (int_stat&int_req) {
 395                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
 396                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
 397                                                 handled = 1;
 398                                         } else {
 399                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
 400                                                         /* Timer might be running but might be for another function */
 401                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
 402                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
 403                                                                 handled = 1;
 404                                                         }
 405                                                 }
 406                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
 407                                                                 (handled == 0)) {
 408                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
 409                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
 410                                                                 handled = 1;
 411                                                         }
 412                                                 }
 413                                         }
 414                                         if (handled) {
 415                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
 416                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
 417                                                 /* Save off the status to save an additional read */
 418                                                 nesdev->int_stat = int_stat;
 419                                                 nesdev->napi_isr_ran = 1;
 420                                         }
 421                                 }
 422                         }
 423                 } else {
 424                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
 425                 }
 426         }
 427
 428         if (handled) {
 429
 430                 if (nes_napi_isr(nesdev) == 0) {
 431                         tasklet_schedule(&nesdev->dpc_tasklet);
 432
 433                 }
 434                 return IRQ_HANDLED;
 435         } else {
 436                 return IRQ_NONE;
 437         }
 438 }
 439
 440
 441 /**
 442  * nes_probe - Device initialization
 443  */
 444 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 445 {
 446         struct net_device *netdev = NULL;
 447         struct nes_device *nesdev = NULL;
 448         int ret = 0;
 449         struct nes_vnic *nesvnic = NULL;
 450         void __iomem *mmio_regs = NULL;
 451         u8 hw_rev;
 452
 453         assert(pcidev != NULL);
 454         assert(ent != NULL);
 455
 456         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
 457                         DRV_VERSION, pci_name(pcidev));
 458
 459         ret = pci_enable_device(pcidev);
 460         if (ret) {
 461                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
 462                 goto bail0;
 463         }
 464
 465         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
 466                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
 467                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
 468         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
 469                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
 470                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
 471
 472         /* Make sure PCI base addr are MMIO */
 473         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
 474                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
 475                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
 476                 ret = -ENODEV;
 477                 goto bail1;
 478         }
 479
 480         /* Reserve PCI I/O and memory resources */
 481         ret = pci_request_regions(pcidev, DRV_NAME);
 482         if (ret) {
 483                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
 484                 goto bail1;
 485         }
 486
 487         if ((sizeof(dma_addr_t) > 4)) {
 488                 ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK);
 489                 if (ret < 0) {
 490                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
 491                         goto bail2;
 492                 }
 493                 ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK);
 494                 if (ret) {
 495                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
 496                         goto bail2;
 497                 }
 498         } else {
 499                 ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
 500                 if (ret < 0) {
 501                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
 502                         goto bail2;
 503                 }
 504                 ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK);
 505                 if (ret) {
 506                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
 507                         goto bail2;
 508                 }
 509         }
 510
 511         pci_set_master(pcidev);
 512
 513         /* Allocate hardware structure */
 514         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
 515         if (!nesdev) {
 516                 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
 517                 ret = -ENOMEM;
 518                 goto bail2;
 519         }
 520
 521         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
 522         nesdev->pcidev = pcidev;
 523         pci_set_drvdata(pcidev, nesdev);
 524
 525         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
 526         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
 527
 528         spin_lock_init(&nesdev->indexed_regs_lock);
 529
 530         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
 531         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
 532         if (mmio_regs == NULL) {
 533                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
 534                 ret = -EIO;
 535                 goto bail3;
 536         }
 537         nesdev->regs = mmio_regs;
 538         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
 539
 540         /* Ensure interrupts are disabled */
 541         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
 542
 543         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
 544                 if (!pci_enable_msi(nesdev->pcidev)) {
 545                         nesdev->msi_enabled = 1;
 546                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
 547                                         pci_name(pcidev));
 548                 } else {
 549                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
 550                                         pci_name(pcidev));
 551                 }
 552         } else {
 553                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
 554                                 pci_name(pcidev));
 555         }
 556
 557         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
 558         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
 559
 560         /* Init the adapter */
 561         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
 562         if (!nesdev->nesadapter) {
 563                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
 564                 ret = -ENOMEM;
 565                 goto bail5;
 566         }
 567         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
 568         nesdev->nesadapter->wqm_quanta = wqm_quanta;
 569
 570         /* nesdev->base_doorbell_index =
 571                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 572         nesdev->base_doorbell_index = 1;
 573         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 574         if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
 575                 switch (PCI_FUNC(nesdev->pcidev->devfn) %
 576                         nesdev->nesadapter->port_count) {
 577                 case 1:
 578                         nesdev->mac_index = 2;
 579                         break;
 580                 case 2:
 581                         nesdev->mac_index = 1;
 582                         break;
 583                 case 3:
 584                         nesdev->mac_index = 3;
 585                         break;
 586                 case 0:
 587                 default:
 588                         nesdev->mac_index = 0;
 589                 }
 590         } else {
 591                 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
 592                                                 nesdev->nesadapter->port_count;
 593         }
 594
 595         if ((limit_maxrdreqsz ||
 596              ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
 597               (hw_rev == NE020_REV1))) &&
 598             (pcie_get_readrq(pcidev) > 256)) {
 599                 if (pcie_set_readrq(pcidev, 256))
 600                         printk(KERN_ERR PFX "Unable to set max read request"
 601                                 " to 256 bytes\n");
 602                 else
 603                         nes_debug(NES_DBG_INIT, "Max read request size set"
 604                                 " to 256 bytes\n");
 605         }
 606
 607         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 608
 609         /* bring up the Control QP */
 610         if (nes_init_cqp(nesdev)) {
 611                 ret = -ENODEV;
 612                 goto bail6;
 613         }
 614
 615         /* Arm the CCQ */
 616         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 617                         PCI_FUNC(nesdev->pcidev->devfn));
 618         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 619
 620         /* Enable the interrupts */
 621         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 622                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 623         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 624                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
 625         }
 626
 627         /* TODO: This really should be the first driver to load, not function 0 */
 628         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 629                 /* pick up PCI and critical errors if the first driver to load */
 630                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 631                 nesdev->int_req |= NES_INT_INTF;
 632         } else {
 633                 nesdev->intf_int_req = 0;
 634         }
 635         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 636         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 637         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 638         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 639         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 640
 641         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 642
 643         /* deal with both periodic and one_shot */
 644         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 645         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 646         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 647                         PCI_FUNC(nesdev->pcidev->devfn),
 648                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 649
 650         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 651
 652         list_add_tail(&nesdev->list, &nes_dev_list);
 653
 654         /* Request an interrupt line for the driver */
 655         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 656         if (ret) {
 657                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 658                                 pci_name(pcidev), pcidev->irq);
 659                 goto bail65;
 660         }
 661
 662         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 663
 664         if (nes_notifiers_registered == 0) {
 665                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 666                 register_netevent_notifier(&nes_net_notifier);
 667         }
 668         nes_notifiers_registered++;
 669
 670         /* Initialize network devices */
 671                 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
 672                         goto bail7;
 673                 }
 674
 675                 /* Register network device */
 676                 ret = register_netdev(netdev);
 677                 if (ret) {
 678                         printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 679                         nes_netdev_destroy(netdev);
 680                         goto bail7;
 681                 }
 682
 683                 nes_print_macaddr(netdev);
 684                 /* create a CM core for this netdev */
 685                 nesvnic = netdev_priv(netdev);
 686
 687                 nesdev->netdev_count++;
 688                 nesdev->nesadapter->netdev_count++;
 689
 690
 691         printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 692                         pci_name(pcidev));
 693         return 0;
 694
 695         bail7:
 696         printk(KERN_ERR PFX "bail7\n");
 697         while (nesdev->netdev_count > 0) {
 698                 nesdev->netdev_count--;
 699                 nesdev->nesadapter->netdev_count--;
 700
 701                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 702                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 703         }
 704
 705         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 706                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 707
 708         nes_notifiers_registered--;
 709         if (nes_notifiers_registered == 0) {
 710                 unregister_netevent_notifier(&nes_net_notifier);
 711                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 712         }
 713
 714         list_del(&nesdev->list);
 715         nes_destroy_cqp(nesdev);
 716
 717         bail65:
 718         printk(KERN_ERR PFX "bail65\n");
 719         free_irq(pcidev->irq, nesdev);
 720         if (nesdev->msi_enabled) {
 721                 pci_disable_msi(pcidev);
 722         }
 723         bail6:
 724         printk(KERN_ERR PFX "bail6\n");
 725         tasklet_kill(&nesdev->dpc_tasklet);
 726         /* Deallocate the Adapter Structure */
 727         nes_destroy_adapter(nesdev->nesadapter);
 728
 729         bail5:
 730         printk(KERN_ERR PFX "bail5\n");
 731         iounmap(nesdev->regs);
 732
 733         bail3:
 734         printk(KERN_ERR PFX "bail3\n");
 735         kfree(nesdev);
 736
 737         bail2:
 738         pci_release_regions(pcidev);
 739
 740         bail1:
 741         pci_disable_device(pcidev);
 742
 743         bail0:
 744         return ret;
 745 }
 746
 747
 748 /**
 749  * nes_remove - unload from kernel
 750  */
 751 static void __devexit nes_remove(struct pci_dev *pcidev)
 752 {
 753         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 754         struct net_device *netdev;
 755         int netdev_index = 0;
 756
 757                 if (nesdev->netdev_count) {
 758                         netdev = nesdev->netdev[netdev_index];
 759                         if (netdev) {
 760                                 netif_stop_queue(netdev);
 761                                 unregister_netdev(netdev);
 762                                 nes_netdev_destroy(netdev);
 763
 764                                 nesdev->netdev[netdev_index] = NULL;
 765                                 nesdev->netdev_count--;
 766                                 nesdev->nesadapter->netdev_count--;
 767                         }
 768                 }
 769
 770         nes_notifiers_registered--;
 771         if (nes_notifiers_registered == 0) {
 772                 unregister_netevent_notifier(&nes_net_notifier);
 773                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 774         }
 775
 776         list_del(&nesdev->list);
 777         nes_destroy_cqp(nesdev);
 778
 779         free_irq(pcidev->irq, nesdev);
 780         tasklet_kill(&nesdev->dpc_tasklet);
 781
 782         /* Deallocate the Adapter Structure */
 783         nes_destroy_adapter(nesdev->nesadapter);
 784
 785         if (nesdev->msi_enabled) {
 786                 pci_disable_msi(pcidev);
 787         }
 788
 789         iounmap(nesdev->regs);
 790         kfree(nesdev);
 791
 792         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 793         pci_release_regions(pcidev);
 794         pci_disable_device(pcidev);
 795         pci_set_drvdata(pcidev, NULL);
 796 }
 797
 798
 799 static struct pci_driver nes_pci_driver = {
 800         .name = DRV_NAME,
 801         .id_table = nes_pci_table,
 802         .probe = nes_probe,
 803         .remove = __devexit_p(nes_remove),
 804 };
 805
 806 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 807 {
 808         unsigned int  devfn = 0xffffffff;
 809         unsigned char bus_number = 0xff;
 810         unsigned int  i = 0;
 811         struct nes_device *nesdev;
 812
 813         list_for_each_entry(nesdev, &nes_dev_list, list) {
 814                 if (i == ee_flsh_adapter) {
 815                         devfn = nesdev->pcidev->devfn;
 816                         bus_number = nesdev->pcidev->bus->number;
 817                         break;
 818                 }
 819                 i++;
 820         }
 821
 822         return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
 823 }
 824
 825 static ssize_t nes_store_adapter(struct device_driver *ddp,
 826         const char *buf, size_t count)
 827 {
 828         char *p = (char *)buf;
 829
 830         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 831         return strnlen(buf, count);
 832 }
 833
 834 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 835 {
 836         u32 eeprom_cmd = 0xdead;
 837         u32 i = 0;
 838         struct nes_device *nesdev;
 839
 840         list_for_each_entry(nesdev, &nes_dev_list, list) {
 841                 if (i == ee_flsh_adapter) {
 842                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 843                         break;
 844                 }
 845                 i++;
 846         }
 847         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 848 }
 849
 850 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 851         const char *buf, size_t count)
 852 {
 853         char *p = (char *)buf;
 854         u32 val;
 855         u32 i = 0;
 856         struct nes_device *nesdev;
 857
 858         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 859                 val = simple_strtoul(p, &p, 16);
 860                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 861                         if (i == ee_flsh_adapter) {
 862                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 863                                 break;
 864                         }
 865                         i++;
 866                 }
 867         }
 868         return strnlen(buf, count);
 869 }
 870
 871 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 872 {
 873         u32 eeprom_data = 0xdead;
 874         u32 i = 0;
 875         struct nes_device *nesdev;
 876
 877         list_for_each_entry(nesdev, &nes_dev_list, list) {
 878                 if (i == ee_flsh_adapter) {
 879                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 880                         break;
 881                 }
 882                 i++;
 883         }
 884
 885         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 886 }
 887
 888 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 889         const char *buf, size_t count)
 890 {
 891         char *p = (char *)buf;
 892         u32 val;
 893         u32 i = 0;
 894         struct nes_device *nesdev;
 895
 896         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 897                 val = simple_strtoul(p, &p, 16);
 898                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 899                         if (i == ee_flsh_adapter) {
 900                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 901                                 break;
 902                         }
 903                         i++;
 904                 }
 905         }
 906         return strnlen(buf, count);
 907 }
 908
 909 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 910 {
 911         u32 flash_cmd = 0xdead;
 912         u32 i = 0;
 913         struct nes_device *nesdev;
 914
 915         list_for_each_entry(nesdev, &nes_dev_list, list) {
 916                 if (i == ee_flsh_adapter) {
 917                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 918                         break;
 919                 }
 920                 i++;
 921         }
 922
 923         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 924 }
 925
 926 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 927         const char *buf, size_t count)
 928 {
 929         char *p = (char *)buf;
 930         u32 val;
 931         u32 i = 0;
 932         struct nes_device *nesdev;
 933
 934         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 935                 val = simple_strtoul(p, &p, 16);
 936                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 937                         if (i == ee_flsh_adapter) {
 938                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 939                                 break;
 940                         }
 941                         i++;
 942                 }
 943         }
 944         return strnlen(buf, count);
 945 }
 946
 947 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 948 {
 949         u32 flash_data = 0xdead;
 950         u32 i = 0;
 951         struct nes_device *nesdev;
 952
 953         list_for_each_entry(nesdev, &nes_dev_list, list) {
 954                 if (i == ee_flsh_adapter) {
 955                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 956                         break;
 957                 }
 958                 i++;
 959         }
 960
 961         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 962 }
 963
 964 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 965         const char *buf, size_t count)
 966 {
 967         char *p = (char *)buf;
 968         u32 val;
 969         u32 i = 0;
 970         struct nes_device *nesdev;
 971
 972         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 973                 val = simple_strtoul(p, &p, 16);
 974                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 975                         if (i == ee_flsh_adapter) {
 976                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 977                                 break;
 978                         }
 979                         i++;
 980                 }
 981         }
 982         return strnlen(buf, count);
 983 }
 984
 985 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 986 {
 987         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
 988 }
 989
 990 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
 991         const char *buf, size_t count)
 992 {
 993         char *p = (char *)buf;
 994
 995         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
 996                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
 997
 998         return strnlen(buf, count);
 999 }
1000
1001 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
1002 {
1003         u32 nonidx_data = 0xdead;
1004         u32 i = 0;
1005         struct nes_device *nesdev;
1006
1007         list_for_each_entry(nesdev, &nes_dev_list, list) {
1008                 if (i == ee_flsh_adapter) {
1009                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
1010                         break;
1011                 }
1012                 i++;
1013         }
1014
1015         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1016 }
1017
1018 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1019         const char *buf, size_t count)
1020 {
1021         char *p = (char *)buf;
1022         u32 val;
1023         u32 i = 0;
1024         struct nes_device *nesdev;
1025
1026         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1027                 val = simple_strtoul(p, &p, 16);
1028                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1029                         if (i == ee_flsh_adapter) {
1030                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1031                                 break;
1032                         }
1033                         i++;
1034                 }
1035         }
1036         return strnlen(buf, count);
1037 }
1038
1039 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1040 {
1041         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1042 }
1043
1044 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1045         const char *buf, size_t count)
1046 {
1047         char *p = (char *)buf;
1048
1049         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1050                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1051
1052         return strnlen(buf, count);
1053 }
1054
1055 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1056 {
1057         u32 idx_data = 0xdead;
1058         u32 i = 0;
1059         struct nes_device *nesdev;
1060
1061         list_for_each_entry(nesdev, &nes_dev_list, list) {
1062                 if (i == ee_flsh_adapter) {
1063                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1064                         break;
1065                 }
1066                 i++;
1067         }
1068
1069         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1070 }
1071
1072 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1073         const char *buf, size_t count)
1074 {
1075         char *p = (char *)buf;
1076         u32 val;
1077         u32 i = 0;
1078         struct nes_device *nesdev;
1079
1080         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1081                 val = simple_strtoul(p, &p, 16);
1082                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1083                         if (i == ee_flsh_adapter) {
1084                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1085                                 break;
1086                         }
1087                         i++;
1088                 }
1089         }
1090         return strnlen(buf, count);
1091 }
1092
1093
1094 /**
1095  * nes_show_wqm_quanta
1096  */
1097 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1098 {
1099         u32 wqm_quanta_value = 0xdead;
1100         u32 i = 0;
1101         struct nes_device *nesdev;
1102
1103         list_for_each_entry(nesdev, &nes_dev_list, list) {
1104                 if (i == ee_flsh_adapter) {
1105                         wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1106                         break;
1107                 }
1108                 i++;
1109         }
1110
1111         return  snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta);
1112 }
1113
1114
1115 /**
1116  * nes_store_wqm_quanta
1117  */
1118 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1119                                         const char *buf, size_t count)
1120 {
1121         unsigned long wqm_quanta_value;
1122         u32 wqm_config1;
1123         u32 i = 0;
1124         struct nes_device *nesdev;
1125
1126         strict_strtoul(buf, 0, &wqm_quanta_value);
1127         list_for_each_entry(nesdev, &nes_dev_list, list) {
1128                 if (i == ee_flsh_adapter) {
1129                         nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1130                         wqm_config1 = nes_read_indexed(nesdev,
1131                                                 NES_IDX_WQM_CONFIG1);
1132                         nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1133                                         ((wqm_quanta_value << 1) |
1134                                         (wqm_config1 & 0x00000001)));
1135                         break;
1136                 }
1137                 i++;
1138         }
1139         return strnlen(buf, count);
1140 }
1141
1142 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1143                    nes_show_adapter, nes_store_adapter);
1144 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1145                    nes_show_ee_cmd, nes_store_ee_cmd);
1146 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1147                    nes_show_ee_data, nes_store_ee_data);
1148 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1149                    nes_show_flash_cmd, nes_store_flash_cmd);
1150 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1151                    nes_show_flash_data, nes_store_flash_data);
1152 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1153                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1154 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1155                    nes_show_nonidx_data, nes_store_nonidx_data);
1156 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1157                    nes_show_idx_addr, nes_store_idx_addr);
1158 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1159                    nes_show_idx_data, nes_store_idx_data);
1160 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1161                    nes_show_wqm_quanta, nes_store_wqm_quanta);
1162
1163 static int nes_create_driver_sysfs(struct pci_driver *drv)
1164 {
1165         int error;
1166         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1167         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1168         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1169         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1170         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1171         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1172         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1173         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1174         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1175         error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1176         return error;
1177 }
1178
1179 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1180 {
1181         driver_remove_file(&drv->driver, &driver_attr_adapter);
1182         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1183         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1184         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1185         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1186         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1187         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1188         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1189         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1190         driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1191 }
1192
1193 /**
1194  * nes_init_module - module initialization entry point
1195  */
1196 static int __init nes_init_module(void)
1197 {
1198         int retval;
1199         int retval1;
1200
1201         retval = nes_cm_start();
1202         if (retval) {
1203                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1204                 return retval;
1205         }
1206         retval = pci_register_driver(&nes_pci_driver);
1207         if (retval >= 0) {
1208                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1209                 if (retval1 < 0)
1210                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1211         }
1212         return retval;
1213 }
1214
1215
1216 /**
1217  * nes_exit_module - module unload entry point
1218  */
1219 static void __exit nes_exit_module(void)
1220 {
1221         nes_cm_stop();
1222         nes_remove_driver_sysfs(&nes_pci_driver);
1223
1224         pci_unregister_driver(&nes_pci_driver);
1225 }
1226
1227
1228 module_init(nes_init_module);
1229 module_exit(nes_exit_module);