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