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, 0);
  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, 0);
  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, 0);
  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, 0);
  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 LIST_HEAD(nes_adapter_list);
  95 static LIST_HEAD(nes_dev_list);
  96
  97 atomic_t qps_destroyed;
  98
  99 static unsigned int ee_flsh_adapter;
 100 static unsigned int sysfs_nonidx_addr;
 101 static unsigned int sysfs_idx_addr;
 102
 103 static struct pci_device_id nes_pci_table[] = {
 104         {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
 105         {0}
 106 };
 107
 108 MODULE_DEVICE_TABLE(pci, nes_pci_table);
 109
 110 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
 111 static int nes_net_event(struct notifier_block *, unsigned long, void *);
 112 static int nes_notifiers_registered;
 113
 114
 115 static struct notifier_block nes_inetaddr_notifier = {
 116         .notifier_call = nes_inetaddr_event
 117 };
 118
 119 static struct notifier_block nes_net_notifier = {
 120         .notifier_call = nes_net_event
 121 };
 122
 123
 124
 125
 126 /**
 127  * nes_inetaddr_event
 128  */
 129 static int nes_inetaddr_event(struct notifier_block *notifier,
 130                 unsigned long event, void *ptr)
 131 {
 132         struct in_ifaddr *ifa = ptr;
 133         struct net_device *event_netdev = ifa->ifa_dev->dev;
 134         struct nes_device *nesdev;
 135         struct net_device *netdev;
 136         struct nes_vnic *nesvnic;
 137         unsigned int addr;
 138         unsigned int mask;
 139
 140         addr = ntohl(ifa->ifa_address);
 141         mask = ntohl(ifa->ifa_mask);
 142         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %08X, netmask %08X.\n",
 143                         addr, mask);
 144         list_for_each_entry(nesdev, &nes_dev_list, list) {
 145                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
 146                                 nesdev, nesdev->netdev[0]->name);
 147                 netdev = nesdev->netdev[0];
 148                 nesvnic = netdev_priv(netdev);
 149                 if (netdev == event_netdev) {
 150                         if (nesvnic->rdma_enabled == 0) {
 151                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
 152                                                 " RDMA is not enabled.\n",
 153                                                 netdev->name);
 154                                 return NOTIFY_OK;
 155                         }
 156                         /* we have ifa->ifa_address/mask here if we need it */
 157                         switch (event) {
 158                                 case NETDEV_DOWN:
 159                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
 160                                         nes_write_indexed(nesdev,
 161                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
 162
 163                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 164                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
 165                                         nesvnic->local_ipaddr = 0;
 166                                         return NOTIFY_OK;
 167                                         break;
 168                                 case NETDEV_UP:
 169                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
 170
 171                                         if (nesvnic->local_ipaddr != 0) {
 172                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
 173                                                 return NOTIFY_OK;
 174                                         }
 175                                         /* Add the address to the IP table */
 176                                         nesvnic->local_ipaddr = ifa->ifa_address;
 177
 178                                         nes_write_indexed(nesdev,
 179                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
 180                                                         ntohl(ifa->ifa_address));
 181                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 182                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
 183                                         return NOTIFY_OK;
 184                                         break;
 185                                 default:
 186                                         break;
 187                         }
 188                 }
 189         }
 190
 191         return NOTIFY_DONE;
 192 }
 193
 194
 195 /**
 196  * nes_net_event
 197  */
 198 static int nes_net_event(struct notifier_block *notifier,
 199                 unsigned long event, void *ptr)
 200 {
 201         struct neighbour *neigh = ptr;
 202         struct nes_device *nesdev;
 203         struct net_device *netdev;
 204         struct nes_vnic *nesvnic;
 205
 206         switch (event) {
 207                 case NETEVENT_NEIGH_UPDATE:
 208                         list_for_each_entry(nesdev, &nes_dev_list, list) {
 209                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
 210                                 netdev = nesdev->netdev[0];
 211                                 nesvnic = netdev_priv(netdev);
 212                                 if (netdev == neigh->dev) {
 213                                         if (nesvnic->rdma_enabled == 0) {
 214                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
 215                                                                 netdev->name);
 216                                         } else {
 217                                                 if (neigh->nud_state & NUD_VALID) {
 218                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 219                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
 220                                                 } else {
 221                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 222                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
 223                                                 }
 224                                         }
 225                                         return NOTIFY_OK;
 226                                 }
 227                         }
 228                         break;
 229                 default:
 230                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
 231                         break;
 232         }
 233
 234         return NOTIFY_DONE;
 235 }
 236
 237
 238 /**
 239  * nes_add_ref
 240  */
 241 void nes_add_ref(struct ib_qp *ibqp)
 242 {
 243         struct nes_qp *nesqp;
 244
 245         nesqp = to_nesqp(ibqp);
 246         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
 247                         ibqp->qp_num, atomic_read(&nesqp->refcount));
 248         atomic_inc(&nesqp->refcount);
 249 }
 250
 251 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
 252 {
 253         unsigned long flags;
 254         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 255         struct nes_adapter *nesadapter = nesdev->nesadapter;
 256         u32 qp_id;
 257
 258         atomic_inc(&qps_destroyed);
 259
 260         /* Free the control structures */
 261
 262         qp_id = nesqp->hwqp.qp_id;
 263         if (nesqp->pbl_vbase) {
 264                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 265                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 266                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 267                 nesadapter->free_256pbl++;
 268                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 269                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 270                 nesqp->pbl_vbase = NULL;
 271
 272         } else {
 273                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 274                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 275         }
 276         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
 277
 278         kfree(nesqp->allocated_buffer);
 279
 280 }
 281
 282 /**
 283  * nes_rem_ref
 284  */
 285 void nes_rem_ref(struct ib_qp *ibqp)
 286 {
 287         u64 u64temp;
 288         struct nes_qp *nesqp;
 289         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 290         struct nes_device *nesdev = nesvnic->nesdev;
 291         struct nes_adapter *nesadapter = nesdev->nesadapter;
 292         struct nes_hw_cqp_wqe *cqp_wqe;
 293         struct nes_cqp_request *cqp_request;
 294         u32 opcode;
 295
 296         nesqp = to_nesqp(ibqp);
 297
 298         if (atomic_read(&nesqp->refcount) == 0) {
 299                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
 300                                 __func__, ibqp->qp_num, nesqp->last_aeq);
 301                 BUG();
 302         }
 303
 304         if (atomic_dec_and_test(&nesqp->refcount)) {
 305                 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
 306
 307                 /* Destroy the QP */
 308                 cqp_request = nes_get_cqp_request(nesdev);
 309                 if (cqp_request == NULL) {
 310                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
 311                         return;
 312                 }
 313                 cqp_request->waiting = 0;
 314                 cqp_request->callback = 1;
 315                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
 316                 cqp_request->cqp_callback_pointer = nesqp;
 317                 cqp_wqe = &cqp_request->cqp_wqe;
 318
 319                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 320                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
 321
 322                 if (nesqp->hte_added) {
 323                         opcode  |= NES_CQP_QP_DEL_HTE;
 324                         nesqp->hte_added = 0;
 325                 }
 326                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 327                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
 328                 u64temp = (u64)nesqp->nesqp_context_pbase;
 329                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
 330                 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
 331         }
 332 }
 333
 334
 335 /**
 336  * nes_get_qp
 337  */
 338 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
 339 {
 340         struct nes_vnic *nesvnic = to_nesvnic(device);
 341         struct nes_device *nesdev = nesvnic->nesdev;
 342         struct nes_adapter *nesadapter = nesdev->nesadapter;
 343
 344         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
 345                 return NULL;
 346
 347         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
 348 }
 349
 350
 351 /**
 352  * nes_print_macaddr
 353  */
 354 static void nes_print_macaddr(struct net_device *netdev)
 355 {
 356         nes_debug(NES_DBG_INIT, "%s: MAC %02X:%02X:%02X:%02X:%02X:%02X, IRQ %u\n",
 357                         netdev->name,
 358                         netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
 359                         netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5],
 360                         netdev->irq);
 361 }
 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_64BIT_MASK);
 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_64BIT_MASK);
 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_32BIT_MASK);
 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_32BIT_MASK);
 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), sizeof(mmio_regs));
 527         if (mmio_regs == NULL) {
 528                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
 529                 ret = -EIO;
 530                 goto bail3;
 531         }
 532         nesdev->regs = mmio_regs;
 533         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
 534
 535         /* Ensure interrupts are disabled */
 536         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
 537
 538         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
 539                 if (!pci_enable_msi(nesdev->pcidev)) {
 540                         nesdev->msi_enabled = 1;
 541                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
 542                                         pci_name(pcidev));
 543                 } else {
 544                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
 545                                         pci_name(pcidev));
 546                 }
 547         } else {
 548                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
 549                                 pci_name(pcidev));
 550         }
 551
 552         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
 553         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
 554
 555         /* Init the adapter */
 556         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
 557         if (!nesdev->nesadapter) {
 558                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
 559                 ret = -ENOMEM;
 560                 goto bail5;
 561         }
 562         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
 563
 564         /* nesdev->base_doorbell_index =
 565                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 566         nesdev->base_doorbell_index = 1;
 567         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 568         nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
 569
 570         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 571
 572         /* bring up the Control QP */
 573         if (nes_init_cqp(nesdev)) {
 574                 ret = -ENODEV;
 575                 goto bail6;
 576         }
 577
 578         /* Arm the CCQ */
 579         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 580                         PCI_FUNC(nesdev->pcidev->devfn));
 581         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 582
 583         /* Enable the interrupts */
 584         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 585                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 586         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 587                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
 588         }
 589
 590         /* TODO: This really should be the first driver to load, not function 0 */
 591         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 592                 /* pick up PCI and critical errors if the first driver to load */
 593                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 594                 nesdev->int_req |= NES_INT_INTF;
 595         } else {
 596                 nesdev->intf_int_req = 0;
 597         }
 598         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 599         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 600         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 601         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 602         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 603
 604         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 605
 606         /* deal with both periodic and one_shot */
 607         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 608         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 609         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 610                         PCI_FUNC(nesdev->pcidev->devfn),
 611                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 612
 613         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 614
 615         list_add_tail(&nesdev->list, &nes_dev_list);
 616
 617         /* Request an interrupt line for the driver */
 618         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 619         if (ret) {
 620                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 621                                 pci_name(pcidev), pcidev->irq);
 622                 goto bail65;
 623         }
 624
 625         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 626
 627         if (nes_notifiers_registered == 0) {
 628                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 629                 register_netevent_notifier(&nes_net_notifier);
 630         }
 631         nes_notifiers_registered++;
 632
 633         /* Initialize network devices */
 634                 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
 635                         goto bail7;
 636                 }
 637
 638                 /* Register network device */
 639                 ret = register_netdev(netdev);
 640                 if (ret) {
 641                         printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 642                         nes_netdev_destroy(netdev);
 643                         goto bail7;
 644                 }
 645
 646                 nes_print_macaddr(netdev);
 647                 /* create a CM core for this netdev */
 648                 nesvnic = netdev_priv(netdev);
 649
 650                 nesdev->netdev_count++;
 651                 nesdev->nesadapter->netdev_count++;
 652
 653
 654         printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 655                         pci_name(pcidev));
 656         return 0;
 657
 658         bail7:
 659         printk(KERN_ERR PFX "bail7\n");
 660         while (nesdev->netdev_count > 0) {
 661                 nesdev->netdev_count--;
 662                 nesdev->nesadapter->netdev_count--;
 663
 664                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 665                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 666         }
 667
 668         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 669                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 670
 671         nes_notifiers_registered--;
 672         if (nes_notifiers_registered == 0) {
 673                 unregister_netevent_notifier(&nes_net_notifier);
 674                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 675         }
 676
 677         list_del(&nesdev->list);
 678         nes_destroy_cqp(nesdev);
 679
 680         bail65:
 681         printk(KERN_ERR PFX "bail65\n");
 682         free_irq(pcidev->irq, nesdev);
 683         if (nesdev->msi_enabled) {
 684                 pci_disable_msi(pcidev);
 685         }
 686         bail6:
 687         printk(KERN_ERR PFX "bail6\n");
 688         tasklet_kill(&nesdev->dpc_tasklet);
 689         /* Deallocate the Adapter Structure */
 690         nes_destroy_adapter(nesdev->nesadapter);
 691
 692         bail5:
 693         printk(KERN_ERR PFX "bail5\n");
 694         iounmap(nesdev->regs);
 695
 696         bail3:
 697         printk(KERN_ERR PFX "bail3\n");
 698         kfree(nesdev);
 699
 700         bail2:
 701         pci_release_regions(pcidev);
 702
 703         bail1:
 704         pci_disable_device(pcidev);
 705
 706         bail0:
 707         return ret;
 708 }
 709
 710
 711 /**
 712  * nes_remove - unload from kernel
 713  */
 714 static void __devexit nes_remove(struct pci_dev *pcidev)
 715 {
 716         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 717         struct net_device *netdev;
 718         int netdev_index = 0;
 719
 720                 if (nesdev->netdev_count) {
 721                         netdev = nesdev->netdev[netdev_index];
 722                         if (netdev) {
 723                                 netif_stop_queue(netdev);
 724                                 unregister_netdev(netdev);
 725                                 nes_netdev_destroy(netdev);
 726
 727                                 nesdev->netdev[netdev_index] = NULL;
 728                                 nesdev->netdev_count--;
 729                                 nesdev->nesadapter->netdev_count--;
 730                         }
 731                 }
 732
 733         nes_notifiers_registered--;
 734         if (nes_notifiers_registered == 0) {
 735                 unregister_netevent_notifier(&nes_net_notifier);
 736                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 737         }
 738
 739         list_del(&nesdev->list);
 740         nes_destroy_cqp(nesdev);
 741
 742         free_irq(pcidev->irq, nesdev);
 743         tasklet_kill(&nesdev->dpc_tasklet);
 744
 745         /* Deallocate the Adapter Structure */
 746         nes_destroy_adapter(nesdev->nesadapter);
 747
 748         if (nesdev->msi_enabled) {
 749                 pci_disable_msi(pcidev);
 750         }
 751
 752         iounmap(nesdev->regs);
 753         kfree(nesdev);
 754
 755         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 756         pci_release_regions(pcidev);
 757         pci_disable_device(pcidev);
 758         pci_set_drvdata(pcidev, NULL);
 759 }
 760
 761
 762 static struct pci_driver nes_pci_driver = {
 763         .name = DRV_NAME,
 764         .id_table = nes_pci_table,
 765         .probe = nes_probe,
 766         .remove = __devexit_p(nes_remove),
 767 };
 768
 769 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 770 {
 771         unsigned int  devfn = 0xffffffff;
 772         unsigned char bus_number = 0xff;
 773         unsigned int  i = 0;
 774         struct nes_device *nesdev;
 775
 776         list_for_each_entry(nesdev, &nes_dev_list, list) {
 777                 if (i == ee_flsh_adapter) {
 778                         devfn      = nesdev->nesadapter->devfn;
 779                         bus_number = nesdev->nesadapter->bus_number;
 780                         break;
 781                 }
 782                 i++;
 783         }
 784
 785         return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
 786 }
 787
 788 static ssize_t nes_store_adapter(struct device_driver *ddp,
 789         const char *buf, size_t count)
 790 {
 791         char *p = (char *)buf;
 792
 793         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 794         return strnlen(buf, count);
 795 }
 796
 797 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 798 {
 799         u32 eeprom_cmd = 0xdead;
 800         u32 i = 0;
 801         struct nes_device *nesdev;
 802
 803         list_for_each_entry(nesdev, &nes_dev_list, list) {
 804                 if (i == ee_flsh_adapter) {
 805                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 806                         break;
 807                 }
 808                 i++;
 809         }
 810         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 811 }
 812
 813 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 814         const char *buf, size_t count)
 815 {
 816         char *p = (char *)buf;
 817         u32 val;
 818         u32 i = 0;
 819         struct nes_device *nesdev;
 820
 821         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 822                 val = simple_strtoul(p, &p, 16);
 823                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 824                         if (i == ee_flsh_adapter) {
 825                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 826                                 break;
 827                         }
 828                         i++;
 829                 }
 830         }
 831         return strnlen(buf, count);
 832 }
 833
 834 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 835 {
 836         u32 eeprom_data = 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_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 843                         break;
 844                 }
 845                 i++;
 846         }
 847
 848         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 849 }
 850
 851 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 852         const char *buf, size_t count)
 853 {
 854         char *p = (char *)buf;
 855         u32 val;
 856         u32 i = 0;
 857         struct nes_device *nesdev;
 858
 859         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 860                 val = simple_strtoul(p, &p, 16);
 861                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 862                         if (i == ee_flsh_adapter) {
 863                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 864                                 break;
 865                         }
 866                         i++;
 867                 }
 868         }
 869         return strnlen(buf, count);
 870 }
 871
 872 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 873 {
 874         u32 flash_cmd = 0xdead;
 875         u32 i = 0;
 876         struct nes_device *nesdev;
 877
 878         list_for_each_entry(nesdev, &nes_dev_list, list) {
 879                 if (i == ee_flsh_adapter) {
 880                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 881                         break;
 882                 }
 883                 i++;
 884         }
 885
 886         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 887 }
 888
 889 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 890         const char *buf, size_t count)
 891 {
 892         char *p = (char *)buf;
 893         u32 val;
 894         u32 i = 0;
 895         struct nes_device *nesdev;
 896
 897         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 898                 val = simple_strtoul(p, &p, 16);
 899                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 900                         if (i == ee_flsh_adapter) {
 901                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 902                                 break;
 903                         }
 904                         i++;
 905                 }
 906         }
 907         return strnlen(buf, count);
 908 }
 909
 910 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 911 {
 912         u32 flash_data = 0xdead;
 913         u32 i = 0;
 914         struct nes_device *nesdev;
 915
 916         list_for_each_entry(nesdev, &nes_dev_list, list) {
 917                 if (i == ee_flsh_adapter) {
 918                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 919                         break;
 920                 }
 921                 i++;
 922         }
 923
 924         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 925 }
 926
 927 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 928         const char *buf, size_t count)
 929 {
 930         char *p = (char *)buf;
 931         u32 val;
 932         u32 i = 0;
 933         struct nes_device *nesdev;
 934
 935         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 936                 val = simple_strtoul(p, &p, 16);
 937                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 938                         if (i == ee_flsh_adapter) {
 939                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 940                                 break;
 941                         }
 942                         i++;
 943                 }
 944         }
 945         return strnlen(buf, count);
 946 }
 947
 948 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 949 {
 950         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
 951 }
 952
 953 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
 954         const char *buf, size_t count)
 955 {
 956         char *p = (char *)buf;
 957
 958         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
 959                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
 960
 961         return strnlen(buf, count);
 962 }
 963
 964 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
 965 {
 966         u32 nonidx_data = 0xdead;
 967         u32 i = 0;
 968         struct nes_device *nesdev;
 969
 970         list_for_each_entry(nesdev, &nes_dev_list, list) {
 971                 if (i == ee_flsh_adapter) {
 972                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
 973                         break;
 974                 }
 975                 i++;
 976         }
 977
 978         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
 979 }
 980
 981 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
 982         const char *buf, size_t count)
 983 {
 984         char *p = (char *)buf;
 985         u32 val;
 986         u32 i = 0;
 987         struct nes_device *nesdev;
 988
 989         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 990                 val = simple_strtoul(p, &p, 16);
 991                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 992                         if (i == ee_flsh_adapter) {
 993                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
 994                                 break;
 995                         }
 996                         i++;
 997                 }
 998         }
 999         return strnlen(buf, count);
1000 }
1001
1002 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1003 {
1004         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1005 }
1006
1007 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1008         const char *buf, size_t count)
1009 {
1010         char *p = (char *)buf;
1011
1012         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1013                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1014
1015         return strnlen(buf, count);
1016 }
1017
1018 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1019 {
1020         u32 idx_data = 0xdead;
1021         u32 i = 0;
1022         struct nes_device *nesdev;
1023
1024         list_for_each_entry(nesdev, &nes_dev_list, list) {
1025                 if (i == ee_flsh_adapter) {
1026                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1027                         break;
1028                 }
1029                 i++;
1030         }
1031
1032         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1033 }
1034
1035 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1036         const char *buf, size_t count)
1037 {
1038         char *p = (char *)buf;
1039         u32 val;
1040         u32 i = 0;
1041         struct nes_device *nesdev;
1042
1043         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1044                 val = simple_strtoul(p, &p, 16);
1045                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1046                         if (i == ee_flsh_adapter) {
1047                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1048                                 break;
1049                         }
1050                         i++;
1051                 }
1052         }
1053         return strnlen(buf, count);
1054 }
1055
1056 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1057                    nes_show_adapter, nes_store_adapter);
1058 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1059                    nes_show_ee_cmd, nes_store_ee_cmd);
1060 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1061                    nes_show_ee_data, nes_store_ee_data);
1062 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1063                    nes_show_flash_cmd, nes_store_flash_cmd);
1064 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1065                    nes_show_flash_data, nes_store_flash_data);
1066 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1067                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1068 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1069                    nes_show_nonidx_data, nes_store_nonidx_data);
1070 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1071                    nes_show_idx_addr, nes_store_idx_addr);
1072 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1073                    nes_show_idx_data, nes_store_idx_data);
1074
1075 static int nes_create_driver_sysfs(struct pci_driver *drv)
1076 {
1077         int error;
1078         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1079         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1080         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1081         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1082         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1083         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1084         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1085         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1086         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1087         return error;
1088 }
1089
1090 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1091 {
1092         driver_remove_file(&drv->driver, &driver_attr_adapter);
1093         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1094         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1095         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1096         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1097         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1098         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1099         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1100         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1101 }
1102
1103 /**
1104  * nes_init_module - module initialization entry point
1105  */
1106 static int __init nes_init_module(void)
1107 {
1108         int retval;
1109         int retval1;
1110
1111         retval = nes_cm_start();
1112         if (retval) {
1113                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1114                 return retval;
1115         }
1116         retval = pci_register_driver(&nes_pci_driver);
1117         if (retval >= 0) {
1118                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1119                 if (retval1 < 0)
1120                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1121         }
1122         return retval;
1123 }
1124
1125
1126 /**
1127  * nes_exit_module - module unload entry point
1128  */
1129 static void __exit nes_exit_module(void)
1130 {
1131         nes_cm_stop();
1132         nes_remove_driver_sysfs(&nes_pci_driver);
1133
1134         pci_unregister_driver(&nes_pci_driver);
1135 }
1136
1137
1138 module_init(nes_init_module);
1139 module_exit(nes_exit_module);