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

   1 /*
   2  * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
   3  * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/ethtool.h>
  39 #include <linux/mii.h>
  40 #include <linux/if_vlan.h>
  41 #include <linux/crc32.h>
  42 #include <linux/in.h>
  43 #include <linux/fs.h>
  44 #include <linux/init.h>
  45 #include <linux/if_arp.h>
  46 #include <linux/highmem.h>
  47 #include <asm/io.h>
  48 #include <asm/irq.h>
  49 #include <asm/byteorder.h>
  50 #include <rdma/ib_smi.h>
  51 #include <rdma/ib_verbs.h>
  52 #include <rdma/ib_pack.h>
  53 #include <rdma/iw_cm.h>
  54
  55 #include "nes.h"
  56
  57 #include <net/netevent.h>
  58 #include <net/neighbour.h>
  59 #include <linux/route.h>
  60 #include <net/ip_fib.h>
  61
  62 MODULE_AUTHOR("NetEffect");
  63 MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
  64 MODULE_LICENSE("Dual BSD/GPL");
  65 MODULE_VERSION(DRV_VERSION);
  66
  67 int max_mtu = 9000;
  68 int 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         DECLARE_MAC_BUF(mac);
 357
 358         nes_debug(NES_DBG_INIT, "%s: %s, IRQ %u\n",
 359                   netdev->name, print_mac(mac, netdev->dev_addr), netdev->irq);
 360 }
 361
 362 /**
 363  * nes_interrupt - handle interrupts
 364  */
 365 static irqreturn_t nes_interrupt(int irq, void *dev_id)
 366 {
 367         struct nes_device *nesdev = (struct nes_device *)dev_id;
 368         int handled = 0;
 369         u32 int_mask;
 370         u32 int_req;
 371         u32 int_stat;
 372         u32 intf_int_stat;
 373         u32 timer_stat;
 374
 375         if (nesdev->msi_enabled) {
 376                 /* No need to read the interrupt pending register if msi is enabled */
 377                 handled = 1;
 378         } else {
 379                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
 380                         /* Master interrupt enable provides synchronization for kicking off bottom half
 381                           when interrupt sharing is going on */
 382                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
 383                         if (int_mask & 0x80000000) {
 384                                 /* Check interrupt status to see if this might be ours */
 385                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
 386                                 int_req = nesdev->int_req;
 387                                 if (int_stat&int_req) {
 388                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
 389                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
 390                                                 handled = 1;
 391                                         } else {
 392                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
 393                                                         /* Timer might be running but might be for another function */
 394                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
 395                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
 396                                                                 handled = 1;
 397                                                         }
 398                                                 }
 399                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
 400                                                                 (handled == 0)) {
 401                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
 402                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
 403                                                                 handled = 1;
 404                                                         }
 405                                                 }
 406                                         }
 407                                         if (handled) {
 408                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
 409                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
 410                                                 /* Save off the status to save an additional read */
 411                                                 nesdev->int_stat = int_stat;
 412                                                 nesdev->napi_isr_ran = 1;
 413                                         }
 414                                 }
 415                         }
 416                 } else {
 417                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
 418                 }
 419         }
 420
 421         if (handled) {
 422
 423                 if (nes_napi_isr(nesdev) == 0) {
 424                         tasklet_schedule(&nesdev->dpc_tasklet);
 425
 426                 }
 427                 return IRQ_HANDLED;
 428         } else {
 429                 return IRQ_NONE;
 430         }
 431 }
 432
 433
 434 /**
 435  * nes_probe - Device initialization
 436  */
 437 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 438 {
 439         struct net_device *netdev = NULL;
 440         struct nes_device *nesdev = NULL;
 441         int ret = 0;
 442         struct nes_vnic *nesvnic = NULL;
 443         void __iomem *mmio_regs = NULL;
 444         u8 hw_rev;
 445
 446         assert(pcidev != NULL);
 447         assert(ent != NULL);
 448
 449         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
 450                         DRV_VERSION, pci_name(pcidev));
 451
 452         ret = pci_enable_device(pcidev);
 453         if (ret) {
 454                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
 455                 goto bail0;
 456         }
 457
 458         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
 459                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
 460                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
 461         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
 462                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
 463                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
 464
 465         /* Make sure PCI base addr are MMIO */
 466         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
 467                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
 468                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
 469                 ret = -ENODEV;
 470                 goto bail1;
 471         }
 472
 473         /* Reserve PCI I/O and memory resources */
 474         ret = pci_request_regions(pcidev, DRV_NAME);
 475         if (ret) {
 476                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
 477                 goto bail1;
 478         }
 479
 480         if ((sizeof(dma_addr_t) > 4)) {
 481                 ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK);
 482                 if (ret < 0) {
 483                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
 484                         goto bail2;
 485                 }
 486                 ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK);
 487                 if (ret) {
 488                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
 489                         goto bail2;
 490                 }
 491         } else {
 492                 ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
 493                 if (ret < 0) {
 494                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
 495                         goto bail2;
 496                 }
 497                 ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK);
 498                 if (ret) {
 499                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
 500                         goto bail2;
 501                 }
 502         }
 503
 504         pci_set_master(pcidev);
 505
 506         /* Allocate hardware structure */
 507         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
 508         if (!nesdev) {
 509                 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
 510                 ret = -ENOMEM;
 511                 goto bail2;
 512         }
 513
 514         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
 515         nesdev->pcidev = pcidev;
 516         pci_set_drvdata(pcidev, nesdev);
 517
 518         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
 519         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
 520
 521         spin_lock_init(&nesdev->indexed_regs_lock);
 522
 523         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
 524         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
 525         if (mmio_regs == NULL) {
 526                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
 527                 ret = -EIO;
 528                 goto bail3;
 529         }
 530         nesdev->regs = mmio_regs;
 531         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
 532
 533         /* Ensure interrupts are disabled */
 534         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
 535
 536         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
 537                 if (!pci_enable_msi(nesdev->pcidev)) {
 538                         nesdev->msi_enabled = 1;
 539                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
 540                                         pci_name(pcidev));
 541                 } else {
 542                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
 543                                         pci_name(pcidev));
 544                 }
 545         } else {
 546                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
 547                                 pci_name(pcidev));
 548         }
 549
 550         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
 551         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
 552
 553         /* Init the adapter */
 554         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
 555         if (!nesdev->nesadapter) {
 556                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
 557                 ret = -ENOMEM;
 558                 goto bail5;
 559         }
 560         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
 561
 562         /* nesdev->base_doorbell_index =
 563                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 564         nesdev->base_doorbell_index = 1;
 565         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 566         nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
 567
 568         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 569
 570         /* bring up the Control QP */
 571         if (nes_init_cqp(nesdev)) {
 572                 ret = -ENODEV;
 573                 goto bail6;
 574         }
 575
 576         /* Arm the CCQ */
 577         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 578                         PCI_FUNC(nesdev->pcidev->devfn));
 579         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 580
 581         /* Enable the interrupts */
 582         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 583                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 584         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 585                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
 586         }
 587
 588         /* TODO: This really should be the first driver to load, not function 0 */
 589         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 590                 /* pick up PCI and critical errors if the first driver to load */
 591                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 592                 nesdev->int_req |= NES_INT_INTF;
 593         } else {
 594                 nesdev->intf_int_req = 0;
 595         }
 596         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 597         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 598         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 599         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 600         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 601
 602         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 603
 604         /* deal with both periodic and one_shot */
 605         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 606         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 607         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 608                         PCI_FUNC(nesdev->pcidev->devfn),
 609                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 610
 611         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 612
 613         list_add_tail(&nesdev->list, &nes_dev_list);
 614
 615         /* Request an interrupt line for the driver */
 616         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 617         if (ret) {
 618                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 619                                 pci_name(pcidev), pcidev->irq);
 620                 goto bail65;
 621         }
 622
 623         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 624
 625         if (nes_notifiers_registered == 0) {
 626                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 627                 register_netevent_notifier(&nes_net_notifier);
 628         }
 629         nes_notifiers_registered++;
 630
 631         /* Initialize network devices */
 632                 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
 633                         goto bail7;
 634                 }
 635
 636                 /* Register network device */
 637                 ret = register_netdev(netdev);
 638                 if (ret) {
 639                         printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 640                         nes_netdev_destroy(netdev);
 641                         goto bail7;
 642                 }
 643
 644                 nes_print_macaddr(netdev);
 645                 /* create a CM core for this netdev */
 646                 nesvnic = netdev_priv(netdev);
 647
 648                 nesdev->netdev_count++;
 649                 nesdev->nesadapter->netdev_count++;
 650
 651
 652         printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 653                         pci_name(pcidev));
 654         return 0;
 655
 656         bail7:
 657         printk(KERN_ERR PFX "bail7\n");
 658         while (nesdev->netdev_count > 0) {
 659                 nesdev->netdev_count--;
 660                 nesdev->nesadapter->netdev_count--;
 661
 662                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 663                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 664         }
 665
 666         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 667                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 668
 669         nes_notifiers_registered--;
 670         if (nes_notifiers_registered == 0) {
 671                 unregister_netevent_notifier(&nes_net_notifier);
 672                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 673         }
 674
 675         list_del(&nesdev->list);
 676         nes_destroy_cqp(nesdev);
 677
 678         bail65:
 679         printk(KERN_ERR PFX "bail65\n");
 680         free_irq(pcidev->irq, nesdev);
 681         if (nesdev->msi_enabled) {
 682                 pci_disable_msi(pcidev);
 683         }
 684         bail6:
 685         printk(KERN_ERR PFX "bail6\n");
 686         tasklet_kill(&nesdev->dpc_tasklet);
 687         /* Deallocate the Adapter Structure */
 688         nes_destroy_adapter(nesdev->nesadapter);
 689
 690         bail5:
 691         printk(KERN_ERR PFX "bail5\n");
 692         iounmap(nesdev->regs);
 693
 694         bail3:
 695         printk(KERN_ERR PFX "bail3\n");
 696         kfree(nesdev);
 697
 698         bail2:
 699         pci_release_regions(pcidev);
 700
 701         bail1:
 702         pci_disable_device(pcidev);
 703
 704         bail0:
 705         return ret;
 706 }
 707
 708
 709 /**
 710  * nes_remove - unload from kernel
 711  */
 712 static void __devexit nes_remove(struct pci_dev *pcidev)
 713 {
 714         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 715         struct net_device *netdev;
 716         int netdev_index = 0;
 717
 718                 if (nesdev->netdev_count) {
 719                         netdev = nesdev->netdev[netdev_index];
 720                         if (netdev) {
 721                                 netif_stop_queue(netdev);
 722                                 unregister_netdev(netdev);
 723                                 nes_netdev_destroy(netdev);
 724
 725                                 nesdev->netdev[netdev_index] = NULL;
 726                                 nesdev->netdev_count--;
 727                                 nesdev->nesadapter->netdev_count--;
 728                         }
 729                 }
 730
 731         nes_notifiers_registered--;
 732         if (nes_notifiers_registered == 0) {
 733                 unregister_netevent_notifier(&nes_net_notifier);
 734                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 735         }
 736
 737         list_del(&nesdev->list);
 738         nes_destroy_cqp(nesdev);
 739
 740         free_irq(pcidev->irq, nesdev);
 741         tasklet_kill(&nesdev->dpc_tasklet);
 742
 743         /* Deallocate the Adapter Structure */
 744         nes_destroy_adapter(nesdev->nesadapter);
 745
 746         if (nesdev->msi_enabled) {
 747                 pci_disable_msi(pcidev);
 748         }
 749
 750         iounmap(nesdev->regs);
 751         kfree(nesdev);
 752
 753         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 754         pci_release_regions(pcidev);
 755         pci_disable_device(pcidev);
 756         pci_set_drvdata(pcidev, NULL);
 757 }
 758
 759
 760 static struct pci_driver nes_pci_driver = {
 761         .name = DRV_NAME,
 762         .id_table = nes_pci_table,
 763         .probe = nes_probe,
 764         .remove = __devexit_p(nes_remove),
 765 };
 766
 767 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 768 {
 769         unsigned int  devfn = 0xffffffff;
 770         unsigned char bus_number = 0xff;
 771         unsigned int  i = 0;
 772         struct nes_device *nesdev;
 773
 774         list_for_each_entry(nesdev, &nes_dev_list, list) {
 775                 if (i == ee_flsh_adapter) {
 776                         devfn      = nesdev->nesadapter->devfn;
 777                         bus_number = nesdev->nesadapter->bus_number;
 778                         break;
 779                 }
 780                 i++;
 781         }
 782
 783         return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
 784 }
 785
 786 static ssize_t nes_store_adapter(struct device_driver *ddp,
 787         const char *buf, size_t count)
 788 {
 789         char *p = (char *)buf;
 790
 791         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 792         return strnlen(buf, count);
 793 }
 794
 795 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 796 {
 797         u32 eeprom_cmd = 0xdead;
 798         u32 i = 0;
 799         struct nes_device *nesdev;
 800
 801         list_for_each_entry(nesdev, &nes_dev_list, list) {
 802                 if (i == ee_flsh_adapter) {
 803                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 804                         break;
 805                 }
 806                 i++;
 807         }
 808         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 809 }
 810
 811 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 812         const char *buf, size_t count)
 813 {
 814         char *p = (char *)buf;
 815         u32 val;
 816         u32 i = 0;
 817         struct nes_device *nesdev;
 818
 819         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 820                 val = simple_strtoul(p, &p, 16);
 821                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 822                         if (i == ee_flsh_adapter) {
 823                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 824                                 break;
 825                         }
 826                         i++;
 827                 }
 828         }
 829         return strnlen(buf, count);
 830 }
 831
 832 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 833 {
 834         u32 eeprom_data = 0xdead;
 835         u32 i = 0;
 836         struct nes_device *nesdev;
 837
 838         list_for_each_entry(nesdev, &nes_dev_list, list) {
 839                 if (i == ee_flsh_adapter) {
 840                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 841                         break;
 842                 }
 843                 i++;
 844         }
 845
 846         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 847 }
 848
 849 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 850         const char *buf, size_t count)
 851 {
 852         char *p = (char *)buf;
 853         u32 val;
 854         u32 i = 0;
 855         struct nes_device *nesdev;
 856
 857         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 858                 val = simple_strtoul(p, &p, 16);
 859                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 860                         if (i == ee_flsh_adapter) {
 861                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 862                                 break;
 863                         }
 864                         i++;
 865                 }
 866         }
 867         return strnlen(buf, count);
 868 }
 869
 870 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 871 {
 872         u32 flash_cmd = 0xdead;
 873         u32 i = 0;
 874         struct nes_device *nesdev;
 875
 876         list_for_each_entry(nesdev, &nes_dev_list, list) {
 877                 if (i == ee_flsh_adapter) {
 878                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 879                         break;
 880                 }
 881                 i++;
 882         }
 883
 884         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 885 }
 886
 887 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 888         const char *buf, size_t count)
 889 {
 890         char *p = (char *)buf;
 891         u32 val;
 892         u32 i = 0;
 893         struct nes_device *nesdev;
 894
 895         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 896                 val = simple_strtoul(p, &p, 16);
 897                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 898                         if (i == ee_flsh_adapter) {
 899                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 900                                 break;
 901                         }
 902                         i++;
 903                 }
 904         }
 905         return strnlen(buf, count);
 906 }
 907
 908 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 909 {
 910         u32 flash_data = 0xdead;
 911         u32 i = 0;
 912         struct nes_device *nesdev;
 913
 914         list_for_each_entry(nesdev, &nes_dev_list, list) {
 915                 if (i == ee_flsh_adapter) {
 916                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 917                         break;
 918                 }
 919                 i++;
 920         }
 921
 922         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 923 }
 924
 925 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 926         const char *buf, size_t count)
 927 {
 928         char *p = (char *)buf;
 929         u32 val;
 930         u32 i = 0;
 931         struct nes_device *nesdev;
 932
 933         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 934                 val = simple_strtoul(p, &p, 16);
 935                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 936                         if (i == ee_flsh_adapter) {
 937                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 938                                 break;
 939                         }
 940                         i++;
 941                 }
 942         }
 943         return strnlen(buf, count);
 944 }
 945
 946 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 947 {
 948         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
 949 }
 950
 951 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
 952         const char *buf, size_t count)
 953 {
 954         char *p = (char *)buf;
 955
 956         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
 957                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
 958
 959         return strnlen(buf, count);
 960 }
 961
 962 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
 963 {
 964         u32 nonidx_data = 0xdead;
 965         u32 i = 0;
 966         struct nes_device *nesdev;
 967
 968         list_for_each_entry(nesdev, &nes_dev_list, list) {
 969                 if (i == ee_flsh_adapter) {
 970                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
 971                         break;
 972                 }
 973                 i++;
 974         }
 975
 976         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
 977 }
 978
 979 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
 980         const char *buf, size_t count)
 981 {
 982         char *p = (char *)buf;
 983         u32 val;
 984         u32 i = 0;
 985         struct nes_device *nesdev;
 986
 987         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 988                 val = simple_strtoul(p, &p, 16);
 989                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 990                         if (i == ee_flsh_adapter) {
 991                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
 992                                 break;
 993                         }
 994                         i++;
 995                 }
 996         }
 997         return strnlen(buf, count);
 998 }
 999
1000 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1001 {
1002         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1003 }
1004
1005 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1006         const char *buf, size_t count)
1007 {
1008         char *p = (char *)buf;
1009
1010         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1011                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1012
1013         return strnlen(buf, count);
1014 }
1015
1016 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1017 {
1018         u32 idx_data = 0xdead;
1019         u32 i = 0;
1020         struct nes_device *nesdev;
1021
1022         list_for_each_entry(nesdev, &nes_dev_list, list) {
1023                 if (i == ee_flsh_adapter) {
1024                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1025                         break;
1026                 }
1027                 i++;
1028         }
1029
1030         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1031 }
1032
1033 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1034         const char *buf, size_t count)
1035 {
1036         char *p = (char *)buf;
1037         u32 val;
1038         u32 i = 0;
1039         struct nes_device *nesdev;
1040
1041         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1042                 val = simple_strtoul(p, &p, 16);
1043                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1044                         if (i == ee_flsh_adapter) {
1045                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1046                                 break;
1047                         }
1048                         i++;
1049                 }
1050         }
1051         return strnlen(buf, count);
1052 }
1053
1054 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1055                    nes_show_adapter, nes_store_adapter);
1056 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1057                    nes_show_ee_cmd, nes_store_ee_cmd);
1058 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1059                    nes_show_ee_data, nes_store_ee_data);
1060 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1061                    nes_show_flash_cmd, nes_store_flash_cmd);
1062 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1063                    nes_show_flash_data, nes_store_flash_data);
1064 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1065                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1066 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1067                    nes_show_nonidx_data, nes_store_nonidx_data);
1068 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1069                    nes_show_idx_addr, nes_store_idx_addr);
1070 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1071                    nes_show_idx_data, nes_store_idx_data);
1072
1073 static int nes_create_driver_sysfs(struct pci_driver *drv)
1074 {
1075         int error;
1076         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1077         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1078         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1079         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1080         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1081         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1082         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1083         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1084         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1085         return error;
1086 }
1087
1088 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1089 {
1090         driver_remove_file(&drv->driver, &driver_attr_adapter);
1091         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1092         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1093         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1094         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1095         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1096         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1097         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1098         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1099 }
1100
1101 /**
1102  * nes_init_module - module initialization entry point
1103  */
1104 static int __init nes_init_module(void)
1105 {
1106         int retval;
1107         int retval1;
1108
1109         retval = nes_cm_start();
1110         if (retval) {
1111                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1112                 return retval;
1113         }
1114         retval = pci_register_driver(&nes_pci_driver);
1115         if (retval >= 0) {
1116                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1117                 if (retval1 < 0)
1118                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1119         }
1120         return retval;
1121 }
1122
1123
1124 /**
1125  * nes_exit_module - module unload entry point
1126  */
1127 static void __exit nes_exit_module(void)
1128 {
1129         nes_cm_stop();
1130         nes_remove_driver_sysfs(&nes_pci_driver);
1131
1132         pci_unregister_driver(&nes_pci_driver);
1133 }
1134
1135
1136 module_init(nes_init_module);
1137 module_exit(nes_exit_module);