drivers/infiniband/hw/nes/nes.c

   1 /*
   2  * Copyright (c) 2006 - 2009 Intel Corporation.  All rights reserved.
   3  * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/ethtool.h>
  39 #include <linux/mii.h>
  40 #include <linux/if_vlan.h>
  41 #include <linux/crc32.h>
  42 #include <linux/in.h>
  43 #include <linux/fs.h>
  44 #include <linux/init.h>
  45 #include <linux/if_arp.h>
  46 #include <linux/highmem.h>
  47 #include <linux/slab.h>
  48 #include <asm/io.h>
  49 #include <asm/irq.h>
  50 #include <asm/byteorder.h>
  51 #include <rdma/ib_smi.h>
  52 #include <rdma/ib_verbs.h>
  53 #include <rdma/ib_pack.h>
  54 #include <rdma/iw_cm.h>
  55
  56 #include "nes.h"
  57
  58 #include <net/netevent.h>
  59 #include <net/neighbour.h>
  60 #include <linux/route.h>
  61 #include <net/ip_fib.h>
  62
  63 MODULE_AUTHOR("NetEffect");
  64 MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
  65 MODULE_LICENSE("Dual BSD/GPL");
  66 MODULE_VERSION(DRV_VERSION);
  67
  68 int max_mtu = 9000;
  69 int interrupt_mod_interval = 0;
  70
  71
  72 /* Interoperability */
  73 int mpa_version = 1;
  74 module_param(mpa_version, int, 0644);
  75 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
  76
  77 /* Interoperability */
  78 int disable_mpa_crc = 0;
  79 module_param(disable_mpa_crc, int, 0644);
  80 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
  81
  82 unsigned int send_first = 0;
  83 module_param(send_first, int, 0644);
  84 MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
  85
  86
  87 unsigned int nes_drv_opt = 0;
  88 module_param(nes_drv_opt, int, 0644);
  89 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
  90
  91 unsigned int nes_debug_level = 0;
  92 module_param_named(debug_level, nes_debug_level, uint, 0644);
  93 MODULE_PARM_DESC(debug_level, "Enable debug output level");
  94
  95 unsigned int wqm_quanta = 0x10000;
  96 module_param(wqm_quanta, int, 0644);
  97 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
  98
  99 static unsigned int limit_maxrdreqsz;
 100 module_param(limit_maxrdreqsz, bool, 0644);
 101 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
 102
 103 LIST_HEAD(nes_adapter_list);
 104 static LIST_HEAD(nes_dev_list);
 105
 106 atomic_t qps_destroyed;
 107
 108 static unsigned int ee_flsh_adapter;
 109 static unsigned int sysfs_nonidx_addr;
 110 static unsigned int sysfs_idx_addr;
 111
 112 static struct pci_device_id nes_pci_table[] = {
 113         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
 114         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
 115         {0}
 116 };
 117
 118 MODULE_DEVICE_TABLE(pci, nes_pci_table);
 119
 120 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
 121 static int nes_net_event(struct notifier_block *, unsigned long, void *);
 122 static int nes_notifiers_registered;
 123
 124
 125 static struct notifier_block nes_inetaddr_notifier = {
 126         .notifier_call = nes_inetaddr_event
 127 };
 128
 129 static struct notifier_block nes_net_notifier = {
 130         .notifier_call = nes_net_event
 131 };
 132
 133
 134
 135
 136 /**
 137  * nes_inetaddr_event
 138  */
 139 static int nes_inetaddr_event(struct notifier_block *notifier,
 140                 unsigned long event, void *ptr)
 141 {
 142         struct in_ifaddr *ifa = ptr;
 143         struct net_device *event_netdev = ifa->ifa_dev->dev;
 144         struct nes_device *nesdev;
 145         struct net_device *netdev;
 146         struct nes_vnic *nesvnic;
 147
 148         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
 149                   &ifa->ifa_address, &ifa->ifa_mask);
 150         list_for_each_entry(nesdev, &nes_dev_list, list) {
 151                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
 152                                 nesdev, nesdev->netdev[0]->name);
 153                 netdev = nesdev->netdev[0];
 154                 nesvnic = netdev_priv(netdev);
 155                 if (netdev == event_netdev) {
 156                         if (nesvnic->rdma_enabled == 0) {
 157                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
 158                                                 " RDMA is not enabled.\n",
 159                                                 netdev->name);
 160                                 return NOTIFY_OK;
 161                         }
 162                         /* we have ifa->ifa_address/mask here if we need it */
 163                         switch (event) {
 164                                 case NETDEV_DOWN:
 165                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
 166                                         nes_write_indexed(nesdev,
 167                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
 168
 169                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 170                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
 171                                         nesvnic->local_ipaddr = 0;
 172                                         return NOTIFY_OK;
 173                                         break;
 174                                 case NETDEV_UP:
 175                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
 176
 177                                         if (nesvnic->local_ipaddr != 0) {
 178                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
 179                                                 return NOTIFY_OK;
 180                                         }
 181                                         /* Add the address to the IP table */
 182                                         nesvnic->local_ipaddr = ifa->ifa_address;
 183
 184                                         nes_write_indexed(nesdev,
 185                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
 186                                                         ntohl(ifa->ifa_address));
 187                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 188                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
 189                                         return NOTIFY_OK;
 190                                         break;
 191                                 default:
 192                                         break;
 193                         }
 194                 }
 195         }
 196
 197         return NOTIFY_DONE;
 198 }
 199
 200
 201 /**
 202  * nes_net_event
 203  */
 204 static int nes_net_event(struct notifier_block *notifier,
 205                 unsigned long event, void *ptr)
 206 {
 207         struct neighbour *neigh = ptr;
 208         struct nes_device *nesdev;
 209         struct net_device *netdev;
 210         struct nes_vnic *nesvnic;
 211
 212         switch (event) {
 213                 case NETEVENT_NEIGH_UPDATE:
 214                         list_for_each_entry(nesdev, &nes_dev_list, list) {
 215                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
 216                                 netdev = nesdev->netdev[0];
 217                                 nesvnic = netdev_priv(netdev);
 218                                 if (netdev == neigh->dev) {
 219                                         if (nesvnic->rdma_enabled == 0) {
 220                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
 221                                                                 netdev->name);
 222                                         } else {
 223                                                 if (neigh->nud_state & NUD_VALID) {
 224                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 225                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
 226                                                 } else {
 227                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 228                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
 229                                                 }
 230                                         }
 231                                         return NOTIFY_OK;
 232                                 }
 233                         }
 234                         break;
 235                 default:
 236                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
 237                         break;
 238         }
 239
 240         return NOTIFY_DONE;
 241 }
 242
 243
 244 /**
 245  * nes_add_ref
 246  */
 247 void nes_add_ref(struct ib_qp *ibqp)
 248 {
 249         struct nes_qp *nesqp;
 250
 251         nesqp = to_nesqp(ibqp);
 252         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
 253                         ibqp->qp_num, atomic_read(&nesqp->refcount));
 254         atomic_inc(&nesqp->refcount);
 255 }
 256
 257 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
 258 {
 259         unsigned long flags;
 260         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 261         struct nes_adapter *nesadapter = nesdev->nesadapter;
 262
 263         atomic_inc(&qps_destroyed);
 264
 265         /* Free the control structures */
 266
 267         if (nesqp->pbl_vbase) {
 268                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 269                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 270                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 271                 nesadapter->free_256pbl++;
 272                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 273                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 274                 nesqp->pbl_vbase = NULL;
 275
 276         } else {
 277                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 278                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 279         }
 280         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
 281
 282         nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
 283         kfree(nesqp->allocated_buffer);
 284
 285 }
 286
 287 /**
 288  * nes_rem_ref
 289  */
 290 void nes_rem_ref(struct ib_qp *ibqp)
 291 {
 292         u64 u64temp;
 293         struct nes_qp *nesqp;
 294         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 295         struct nes_device *nesdev = nesvnic->nesdev;
 296         struct nes_hw_cqp_wqe *cqp_wqe;
 297         struct nes_cqp_request *cqp_request;
 298         u32 opcode;
 299
 300         nesqp = to_nesqp(ibqp);
 301
 302         if (atomic_read(&nesqp->refcount) == 0) {
 303                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
 304                                 __func__, ibqp->qp_num, nesqp->last_aeq);
 305                 BUG();
 306         }
 307
 308         if (atomic_dec_and_test(&nesqp->refcount)) {
 309                 /* Destroy the QP */
 310                 cqp_request = nes_get_cqp_request(nesdev);
 311                 if (cqp_request == NULL) {
 312                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
 313                         return;
 314                 }
 315                 cqp_request->waiting = 0;
 316                 cqp_request->callback = 1;
 317                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
 318                 cqp_request->cqp_callback_pointer = nesqp;
 319                 cqp_wqe = &cqp_request->cqp_wqe;
 320
 321                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 322                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
 323
 324                 if (nesqp->hte_added) {
 325                         opcode  |= NES_CQP_QP_DEL_HTE;
 326                         nesqp->hte_added = 0;
 327                 }
 328                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 329                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
 330                 u64temp = (u64)nesqp->nesqp_context_pbase;
 331                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
 332                 nes_post_cqp_request(nesdev, cqp_request);
 333         }
 334 }
 335
 336
 337 /**
 338  * nes_get_qp
 339  */
 340 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
 341 {
 342         struct nes_vnic *nesvnic = to_nesvnic(device);
 343         struct nes_device *nesdev = nesvnic->nesdev;
 344         struct nes_adapter *nesadapter = nesdev->nesadapter;
 345
 346         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
 347                 return NULL;
 348
 349         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
 350 }
 351
 352
 353 /**
 354  * nes_print_macaddr
 355  */
 356 static void nes_print_macaddr(struct net_device *netdev)
 357 {
 358         nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
 359                   netdev->name, 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         void __iomem *mmio_regs = NULL;
 443         u8 hw_rev;
 444
 445         assert(pcidev != NULL);
 446         assert(ent != NULL);
 447
 448         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
 449                         DRV_VERSION, pci_name(pcidev));
 450
 451         ret = pci_enable_device(pcidev);
 452         if (ret) {
 453                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
 454                 goto bail0;
 455         }
 456
 457         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
 458                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
 459                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
 460         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
 461                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
 462                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
 463
 464         /* Make sure PCI base addr are MMIO */
 465         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
 466                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
 467                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
 468                 ret = -ENODEV;
 469                 goto bail1;
 470         }
 471
 472         /* Reserve PCI I/O and memory resources */
 473         ret = pci_request_regions(pcidev, DRV_NAME);
 474         if (ret) {
 475                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
 476                 goto bail1;
 477         }
 478
 479         if ((sizeof(dma_addr_t) > 4)) {
 480                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
 481                 if (ret < 0) {
 482                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
 483                         goto bail2;
 484                 }
 485                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
 486                 if (ret) {
 487                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
 488                         goto bail2;
 489                 }
 490         } else {
 491                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
 492                 if (ret < 0) {
 493                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
 494                         goto bail2;
 495                 }
 496                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
 497                 if (ret) {
 498                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
 499                         goto bail2;
 500                 }
 501         }
 502
 503         pci_set_master(pcidev);
 504
 505         /* Allocate hardware structure */
 506         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
 507         if (!nesdev) {
 508                 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
 509                 ret = -ENOMEM;
 510                 goto bail2;
 511         }
 512
 513         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
 514         nesdev->pcidev = pcidev;
 515         pci_set_drvdata(pcidev, nesdev);
 516
 517         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
 518         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
 519
 520         spin_lock_init(&nesdev->indexed_regs_lock);
 521
 522         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
 523         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
 524                                     pci_resource_len(pcidev, BAR_0));
 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         nesdev->nesadapter->wqm_quanta = wqm_quanta;
 562
 563         /* nesdev->base_doorbell_index =
 564                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 565         nesdev->base_doorbell_index = 1;
 566         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 567         if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
 568                 switch (PCI_FUNC(nesdev->pcidev->devfn) %
 569                         nesdev->nesadapter->port_count) {
 570                 case 1:
 571                         nesdev->mac_index = 2;
 572                         break;
 573                 case 2:
 574                         nesdev->mac_index = 1;
 575                         break;
 576                 case 3:
 577                         nesdev->mac_index = 3;
 578                         break;
 579                 case 0:
 580                 default:
 581                         nesdev->mac_index = 0;
 582                 }
 583         } else {
 584                 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
 585                                                 nesdev->nesadapter->port_count;
 586         }
 587
 588         if ((limit_maxrdreqsz ||
 589              ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
 590               (hw_rev == NE020_REV1))) &&
 591             (pcie_get_readrq(pcidev) > 256)) {
 592                 if (pcie_set_readrq(pcidev, 256))
 593                         printk(KERN_ERR PFX "Unable to set max read request"
 594                                 " to 256 bytes\n");
 595                 else
 596                         nes_debug(NES_DBG_INIT, "Max read request size set"
 597                                 " to 256 bytes\n");
 598         }
 599
 600         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 601
 602         /* bring up the Control QP */
 603         if (nes_init_cqp(nesdev)) {
 604                 ret = -ENODEV;
 605                 goto bail6;
 606         }
 607
 608         /* Arm the CCQ */
 609         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 610                         PCI_FUNC(nesdev->pcidev->devfn));
 611         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 612
 613         /* Enable the interrupts */
 614         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 615                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 616         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 617                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
 618         }
 619
 620         /* TODO: This really should be the first driver to load, not function 0 */
 621         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 622                 /* pick up PCI and critical errors if the first driver to load */
 623                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 624                 nesdev->int_req |= NES_INT_INTF;
 625         } else {
 626                 nesdev->intf_int_req = 0;
 627         }
 628         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 629         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 630         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 631         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 632         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 633
 634         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 635
 636         /* deal with both periodic and one_shot */
 637         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 638         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 639         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 640                         PCI_FUNC(nesdev->pcidev->devfn),
 641                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 642
 643         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 644
 645         list_add_tail(&nesdev->list, &nes_dev_list);
 646
 647         /* Request an interrupt line for the driver */
 648         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 649         if (ret) {
 650                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 651                                 pci_name(pcidev), pcidev->irq);
 652                 goto bail65;
 653         }
 654
 655         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 656
 657         if (nes_notifiers_registered == 0) {
 658                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 659                 register_netevent_notifier(&nes_net_notifier);
 660         }
 661         nes_notifiers_registered++;
 662
 663         /* Initialize network devices */
 664         if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL)
 665                 goto bail7;
 666
 667         /* Register network device */
 668         ret = register_netdev(netdev);
 669         if (ret) {
 670                 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 671                 nes_netdev_destroy(netdev);
 672                 goto bail7;
 673         }
 674
 675         nes_print_macaddr(netdev);
 676
 677         nesdev->netdev_count++;
 678         nesdev->nesadapter->netdev_count++;
 679
 680         printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 681                         pci_name(pcidev));
 682         return 0;
 683
 684         bail7:
 685         printk(KERN_ERR PFX "bail7\n");
 686         while (nesdev->netdev_count > 0) {
 687                 nesdev->netdev_count--;
 688                 nesdev->nesadapter->netdev_count--;
 689
 690                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 691                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 692         }
 693
 694         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 695                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 696
 697         nes_notifiers_registered--;
 698         if (nes_notifiers_registered == 0) {
 699                 unregister_netevent_notifier(&nes_net_notifier);
 700                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 701         }
 702
 703         list_del(&nesdev->list);
 704         nes_destroy_cqp(nesdev);
 705
 706         bail65:
 707         printk(KERN_ERR PFX "bail65\n");
 708         free_irq(pcidev->irq, nesdev);
 709         if (nesdev->msi_enabled) {
 710                 pci_disable_msi(pcidev);
 711         }
 712         bail6:
 713         printk(KERN_ERR PFX "bail6\n");
 714         tasklet_kill(&nesdev->dpc_tasklet);
 715         /* Deallocate the Adapter Structure */
 716         nes_destroy_adapter(nesdev->nesadapter);
 717
 718         bail5:
 719         printk(KERN_ERR PFX "bail5\n");
 720         iounmap(nesdev->regs);
 721
 722         bail3:
 723         printk(KERN_ERR PFX "bail3\n");
 724         kfree(nesdev);
 725
 726         bail2:
 727         pci_release_regions(pcidev);
 728
 729         bail1:
 730         pci_disable_device(pcidev);
 731
 732         bail0:
 733         return ret;
 734 }
 735
 736
 737 /**
 738  * nes_remove - unload from kernel
 739  */
 740 static void __devexit nes_remove(struct pci_dev *pcidev)
 741 {
 742         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 743         struct net_device *netdev;
 744         int netdev_index = 0;
 745
 746                 if (nesdev->netdev_count) {
 747                         netdev = nesdev->netdev[netdev_index];
 748                         if (netdev) {
 749                                 netif_stop_queue(netdev);
 750                                 unregister_netdev(netdev);
 751                                 nes_netdev_destroy(netdev);
 752
 753                                 nesdev->netdev[netdev_index] = NULL;
 754                                 nesdev->netdev_count--;
 755                                 nesdev->nesadapter->netdev_count--;
 756                         }
 757                 }
 758
 759         nes_notifiers_registered--;
 760         if (nes_notifiers_registered == 0) {
 761                 unregister_netevent_notifier(&nes_net_notifier);
 762                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 763         }
 764
 765         list_del(&nesdev->list);
 766         nes_destroy_cqp(nesdev);
 767
 768         free_irq(pcidev->irq, nesdev);
 769         tasklet_kill(&nesdev->dpc_tasklet);
 770
 771         /* Deallocate the Adapter Structure */
 772         nes_destroy_adapter(nesdev->nesadapter);
 773
 774         if (nesdev->msi_enabled) {
 775                 pci_disable_msi(pcidev);
 776         }
 777
 778         iounmap(nesdev->regs);
 779         kfree(nesdev);
 780
 781         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 782         pci_release_regions(pcidev);
 783         pci_disable_device(pcidev);
 784         pci_set_drvdata(pcidev, NULL);
 785 }
 786
 787
 788 static struct pci_driver nes_pci_driver = {
 789         .name = DRV_NAME,
 790         .id_table = nes_pci_table,
 791         .probe = nes_probe,
 792         .remove = __devexit_p(nes_remove),
 793 };
 794
 795 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 796 {
 797         unsigned int  devfn = 0xffffffff;
 798         unsigned char bus_number = 0xff;
 799         unsigned int  i = 0;
 800         struct nes_device *nesdev;
 801
 802         list_for_each_entry(nesdev, &nes_dev_list, list) {
 803                 if (i == ee_flsh_adapter) {
 804                         devfn = nesdev->pcidev->devfn;
 805                         bus_number = nesdev->pcidev->bus->number;
 806                         break;
 807                 }
 808                 i++;
 809         }
 810
 811         return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
 812 }
 813
 814 static ssize_t nes_store_adapter(struct device_driver *ddp,
 815         const char *buf, size_t count)
 816 {
 817         char *p = (char *)buf;
 818
 819         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 820         return strnlen(buf, count);
 821 }
 822
 823 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 824 {
 825         u32 eeprom_cmd = 0xdead;
 826         u32 i = 0;
 827         struct nes_device *nesdev;
 828
 829         list_for_each_entry(nesdev, &nes_dev_list, list) {
 830                 if (i == ee_flsh_adapter) {
 831                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 832                         break;
 833                 }
 834                 i++;
 835         }
 836         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 837 }
 838
 839 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 840         const char *buf, size_t count)
 841 {
 842         char *p = (char *)buf;
 843         u32 val;
 844         u32 i = 0;
 845         struct nes_device *nesdev;
 846
 847         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 848                 val = simple_strtoul(p, &p, 16);
 849                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 850                         if (i == ee_flsh_adapter) {
 851                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 852                                 break;
 853                         }
 854                         i++;
 855                 }
 856         }
 857         return strnlen(buf, count);
 858 }
 859
 860 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 861 {
 862         u32 eeprom_data = 0xdead;
 863         u32 i = 0;
 864         struct nes_device *nesdev;
 865
 866         list_for_each_entry(nesdev, &nes_dev_list, list) {
 867                 if (i == ee_flsh_adapter) {
 868                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 869                         break;
 870                 }
 871                 i++;
 872         }
 873
 874         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 875 }
 876
 877 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 878         const char *buf, size_t count)
 879 {
 880         char *p = (char *)buf;
 881         u32 val;
 882         u32 i = 0;
 883         struct nes_device *nesdev;
 884
 885         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 886                 val = simple_strtoul(p, &p, 16);
 887                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 888                         if (i == ee_flsh_adapter) {
 889                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 890                                 break;
 891                         }
 892                         i++;
 893                 }
 894         }
 895         return strnlen(buf, count);
 896 }
 897
 898 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 899 {
 900         u32 flash_cmd = 0xdead;
 901         u32 i = 0;
 902         struct nes_device *nesdev;
 903
 904         list_for_each_entry(nesdev, &nes_dev_list, list) {
 905                 if (i == ee_flsh_adapter) {
 906                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 907                         break;
 908                 }
 909                 i++;
 910         }
 911
 912         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 913 }
 914
 915 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 916         const char *buf, size_t count)
 917 {
 918         char *p = (char *)buf;
 919         u32 val;
 920         u32 i = 0;
 921         struct nes_device *nesdev;
 922
 923         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 924                 val = simple_strtoul(p, &p, 16);
 925                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 926                         if (i == ee_flsh_adapter) {
 927                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 928                                 break;
 929                         }
 930                         i++;
 931                 }
 932         }
 933         return strnlen(buf, count);
 934 }
 935
 936 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 937 {
 938         u32 flash_data = 0xdead;
 939         u32 i = 0;
 940         struct nes_device *nesdev;
 941
 942         list_for_each_entry(nesdev, &nes_dev_list, list) {
 943                 if (i == ee_flsh_adapter) {
 944                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 945                         break;
 946                 }
 947                 i++;
 948         }
 949
 950         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 951 }
 952
 953 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 954         const char *buf, size_t count)
 955 {
 956         char *p = (char *)buf;
 957         u32 val;
 958         u32 i = 0;
 959         struct nes_device *nesdev;
 960
 961         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 962                 val = simple_strtoul(p, &p, 16);
 963                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 964                         if (i == ee_flsh_adapter) {
 965                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 966                                 break;
 967                         }
 968                         i++;
 969                 }
 970         }
 971         return strnlen(buf, count);
 972 }
 973
 974 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 975 {
 976         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
 977 }
 978
 979 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
 980         const char *buf, size_t count)
 981 {
 982         char *p = (char *)buf;
 983
 984         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
 985                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
 986
 987         return strnlen(buf, count);
 988 }
 989
 990 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
 991 {
 992         u32 nonidx_data = 0xdead;
 993         u32 i = 0;
 994         struct nes_device *nesdev;
 995
 996         list_for_each_entry(nesdev, &nes_dev_list, list) {
 997                 if (i == ee_flsh_adapter) {
 998                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
 999                         break;
1000                 }
1001                 i++;
1002         }
1003
1004         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1005 }
1006
1007 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1008         const char *buf, size_t count)
1009 {
1010         char *p = (char *)buf;
1011         u32 val;
1012         u32 i = 0;
1013         struct nes_device *nesdev;
1014
1015         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1016                 val = simple_strtoul(p, &p, 16);
1017                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1018                         if (i == ee_flsh_adapter) {
1019                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1020                                 break;
1021                         }
1022                         i++;
1023                 }
1024         }
1025         return strnlen(buf, count);
1026 }
1027
1028 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1029 {
1030         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1031 }
1032
1033 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1034         const char *buf, size_t count)
1035 {
1036         char *p = (char *)buf;
1037
1038         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1039                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1040
1041         return strnlen(buf, count);
1042 }
1043
1044 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1045 {
1046         u32 idx_data = 0xdead;
1047         u32 i = 0;
1048         struct nes_device *nesdev;
1049
1050         list_for_each_entry(nesdev, &nes_dev_list, list) {
1051                 if (i == ee_flsh_adapter) {
1052                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1053                         break;
1054                 }
1055                 i++;
1056         }
1057
1058         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1059 }
1060
1061 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1062         const char *buf, size_t count)
1063 {
1064         char *p = (char *)buf;
1065         u32 val;
1066         u32 i = 0;
1067         struct nes_device *nesdev;
1068
1069         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1070                 val = simple_strtoul(p, &p, 16);
1071                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1072                         if (i == ee_flsh_adapter) {
1073                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1074                                 break;
1075                         }
1076                         i++;
1077                 }
1078         }
1079         return strnlen(buf, count);
1080 }
1081
1082
1083 /**
1084  * nes_show_wqm_quanta
1085  */
1086 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1087 {
1088         u32 wqm_quanta_value = 0xdead;
1089         u32 i = 0;
1090         struct nes_device *nesdev;
1091
1092         list_for_each_entry(nesdev, &nes_dev_list, list) {
1093                 if (i == ee_flsh_adapter) {
1094                         wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1095                         break;
1096                 }
1097                 i++;
1098         }
1099
1100         return  snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta_value);
1101 }
1102
1103
1104 /**
1105  * nes_store_wqm_quanta
1106  */
1107 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1108                                         const char *buf, size_t count)
1109 {
1110         unsigned long wqm_quanta_value;
1111         u32 wqm_config1;
1112         u32 i = 0;
1113         struct nes_device *nesdev;
1114
1115         strict_strtoul(buf, 0, &wqm_quanta_value);
1116         list_for_each_entry(nesdev, &nes_dev_list, list) {
1117                 if (i == ee_flsh_adapter) {
1118                         nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1119                         wqm_config1 = nes_read_indexed(nesdev,
1120                                                 NES_IDX_WQM_CONFIG1);
1121                         nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1122                                         ((wqm_quanta_value << 1) |
1123                                         (wqm_config1 & 0x00000001)));
1124                         break;
1125                 }
1126                 i++;
1127         }
1128         return strnlen(buf, count);
1129 }
1130
1131 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1132                    nes_show_adapter, nes_store_adapter);
1133 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1134                    nes_show_ee_cmd, nes_store_ee_cmd);
1135 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1136                    nes_show_ee_data, nes_store_ee_data);
1137 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1138                    nes_show_flash_cmd, nes_store_flash_cmd);
1139 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1140                    nes_show_flash_data, nes_store_flash_data);
1141 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1142                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1143 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1144                    nes_show_nonidx_data, nes_store_nonidx_data);
1145 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1146                    nes_show_idx_addr, nes_store_idx_addr);
1147 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1148                    nes_show_idx_data, nes_store_idx_data);
1149 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1150                    nes_show_wqm_quanta, nes_store_wqm_quanta);
1151
1152 static int nes_create_driver_sysfs(struct pci_driver *drv)
1153 {
1154         int error;
1155         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1156         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1157         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1158         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1159         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1160         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1161         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1162         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1163         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1164         error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1165         return error;
1166 }
1167
1168 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1169 {
1170         driver_remove_file(&drv->driver, &driver_attr_adapter);
1171         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1172         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1173         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1174         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1175         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1176         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1177         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1178         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1179         driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1180 }
1181
1182 /**
1183  * nes_init_module - module initialization entry point
1184  */
1185 static int __init nes_init_module(void)
1186 {
1187         int retval;
1188         int retval1;
1189
1190         retval = nes_cm_start();
1191         if (retval) {
1192                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1193                 return retval;
1194         }
1195         retval = pci_register_driver(&nes_pci_driver);
1196         if (retval >= 0) {
1197                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1198                 if (retval1 < 0)
1199                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1200         }
1201         return retval;
1202 }
1203
1204
1205 /**
1206  * nes_exit_module - module unload entry point
1207  */
1208 static void __exit nes_exit_module(void)
1209 {
1210         nes_cm_stop();
1211         nes_remove_driver_sysfs(&nes_pci_driver);
1212
1213         pci_unregister_driver(&nes_pci_driver);
1214 }
1215
1216
1217 module_init(nes_init_module);
1218 module_exit(nes_exit_module);