drivers/infiniband/hw/nes/nes.c

   1 /*
   2  * Copyright (c) 2006 - 2011 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 nes_drv_opt = NES_DRV_OPT_DISABLE_INT_MOD | NES_DRV_OPT_ENABLE_PAU;
  83 module_param(nes_drv_opt, int, 0644);
  84 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
  85
  86 unsigned int nes_debug_level = 0;
  87 module_param_named(debug_level, nes_debug_level, uint, 0644);
  88 MODULE_PARM_DESC(debug_level, "Enable debug output level");
  89
  90 unsigned int wqm_quanta = 0x10000;
  91 module_param(wqm_quanta, int, 0644);
  92 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
  93
  94 static bool limit_maxrdreqsz;
  95 module_param(limit_maxrdreqsz, bool, 0644);
  96 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
  97
  98 LIST_HEAD(nes_adapter_list);
  99 static LIST_HEAD(nes_dev_list);
 100
 101 atomic_t qps_destroyed;
 102
 103 static unsigned int ee_flsh_adapter;
 104 static unsigned int sysfs_nonidx_addr;
 105 static unsigned int sysfs_idx_addr;
 106
 107 static struct pci_device_id nes_pci_table[] = {
 108         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
 109         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
 110         {0}
 111 };
 112
 113 MODULE_DEVICE_TABLE(pci, nes_pci_table);
 114
 115 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
 116 static int nes_net_event(struct notifier_block *, unsigned long, void *);
 117 static int nes_notifiers_registered;
 118
 119
 120 static struct notifier_block nes_inetaddr_notifier = {
 121         .notifier_call = nes_inetaddr_event
 122 };
 123
 124 static struct notifier_block nes_net_notifier = {
 125         .notifier_call = nes_net_event
 126 };
 127
 128 /**
 129  * nes_inetaddr_event
 130  */
 131 static int nes_inetaddr_event(struct notifier_block *notifier,
 132                 unsigned long event, void *ptr)
 133 {
 134         struct in_ifaddr *ifa = ptr;
 135         struct net_device *event_netdev = ifa->ifa_dev->dev;
 136         struct nes_device *nesdev;
 137         struct net_device *netdev;
 138         struct net_device *upper_dev;
 139         struct nes_vnic *nesvnic;
 140         unsigned int is_bonded;
 141
 142         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
 143                   &ifa->ifa_address, &ifa->ifa_mask);
 144         list_for_each_entry(nesdev, &nes_dev_list, list) {
 145                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
 146                                 nesdev, nesdev->netdev[0]->name);
 147                 netdev = nesdev->netdev[0];
 148                 nesvnic = netdev_priv(netdev);
 149                 upper_dev = netdev_master_upper_dev_get(netdev);
 150                 is_bonded = netif_is_bond_slave(netdev) &&
 151                             (upper_dev == event_netdev);
 152                 if ((netdev == event_netdev) || is_bonded) {
 153                         if (nesvnic->rdma_enabled == 0) {
 154                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
 155                                                 " RDMA is not enabled.\n",
 156                                                 netdev->name);
 157                                 return NOTIFY_OK;
 158                         }
 159                         /* we have ifa->ifa_address/mask here if we need it */
 160                         switch (event) {
 161                                 case NETDEV_DOWN:
 162                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
 163                                         nes_write_indexed(nesdev,
 164                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
 165
 166                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 167                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
 168                                         nesvnic->local_ipaddr = 0;
 169                                         if (is_bonded)
 170                                                 continue;
 171                                         else
 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                                         /* fall through */
 182                                 case NETDEV_CHANGEADDR:
 183                                         /* Add the address to the IP table */
 184                                         if (upper_dev)
 185                                                 nesvnic->local_ipaddr =
 186                                                         ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address;
 187                                         else
 188                                                 nesvnic->local_ipaddr = ifa->ifa_address;
 189
 190                                         nes_write_indexed(nesdev,
 191                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
 192                                                         ntohl(nesvnic->local_ipaddr));
 193                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 194                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
 195                                         if (is_bonded)
 196                                                 continue;
 197                                         else
 198                                                 return NOTIFY_OK;
 199                                         break;
 200                                 default:
 201                                         break;
 202                         }
 203                 }
 204         }
 205
 206         return NOTIFY_DONE;
 207 }
 208
 209
 210 /**
 211  * nes_net_event
 212  */
 213 static int nes_net_event(struct notifier_block *notifier,
 214                 unsigned long event, void *ptr)
 215 {
 216         struct neighbour *neigh = ptr;
 217         struct nes_device *nesdev;
 218         struct net_device *netdev;
 219         struct nes_vnic *nesvnic;
 220
 221         switch (event) {
 222                 case NETEVENT_NEIGH_UPDATE:
 223                         list_for_each_entry(nesdev, &nes_dev_list, list) {
 224                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
 225                                 netdev = nesdev->netdev[0];
 226                                 nesvnic = netdev_priv(netdev);
 227                                 if (netdev == neigh->dev) {
 228                                         if (nesvnic->rdma_enabled == 0) {
 229                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
 230                                                                 netdev->name);
 231                                         } else {
 232                                                 if (neigh->nud_state & NUD_VALID) {
 233                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 234                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
 235                                                 } else {
 236                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 237                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
 238                                                 }
 239                                         }
 240                                         return NOTIFY_OK;
 241                                 }
 242                         }
 243                         break;
 244                 default:
 245                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
 246                         break;
 247         }
 248
 249         return NOTIFY_DONE;
 250 }
 251
 252
 253 /**
 254  * nes_add_ref
 255  */
 256 void nes_add_ref(struct ib_qp *ibqp)
 257 {
 258         struct nes_qp *nesqp;
 259
 260         nesqp = to_nesqp(ibqp);
 261         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
 262                         ibqp->qp_num, atomic_read(&nesqp->refcount));
 263         atomic_inc(&nesqp->refcount);
 264 }
 265
 266 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
 267 {
 268         unsigned long flags;
 269         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 270         struct nes_adapter *nesadapter = nesdev->nesadapter;
 271
 272         atomic_inc(&qps_destroyed);
 273
 274         /* Free the control structures */
 275
 276         if (nesqp->pbl_vbase) {
 277                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 278                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 279                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 280                 nesadapter->free_256pbl++;
 281                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 282                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 283                 nesqp->pbl_vbase = NULL;
 284
 285         } else {
 286                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 287                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 288         }
 289         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
 290
 291         nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
 292         kfree(nesqp->allocated_buffer);
 293
 294 }
 295
 296 /**
 297  * nes_rem_ref
 298  */
 299 void nes_rem_ref(struct ib_qp *ibqp)
 300 {
 301         u64 u64temp;
 302         struct nes_qp *nesqp;
 303         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 304         struct nes_device *nesdev = nesvnic->nesdev;
 305         struct nes_hw_cqp_wqe *cqp_wqe;
 306         struct nes_cqp_request *cqp_request;
 307         u32 opcode;
 308
 309         nesqp = to_nesqp(ibqp);
 310
 311         if (atomic_read(&nesqp->refcount) == 0) {
 312                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
 313                                 __func__, ibqp->qp_num, nesqp->last_aeq);
 314                 BUG();
 315         }
 316
 317         if (atomic_dec_and_test(&nesqp->refcount)) {
 318                 if (nesqp->pau_mode)
 319                         nes_destroy_pau_qp(nesdev, nesqp);
 320
 321                 /* Destroy the QP */
 322                 cqp_request = nes_get_cqp_request(nesdev);
 323                 if (cqp_request == NULL) {
 324                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
 325                         return;
 326                 }
 327                 cqp_request->waiting = 0;
 328                 cqp_request->callback = 1;
 329                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
 330                 cqp_request->cqp_callback_pointer = nesqp;
 331                 cqp_wqe = &cqp_request->cqp_wqe;
 332
 333                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 334                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
 335
 336                 if (nesqp->hte_added) {
 337                         opcode  |= NES_CQP_QP_DEL_HTE;
 338                         nesqp->hte_added = 0;
 339                 }
 340                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 341                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
 342                 u64temp = (u64)nesqp->nesqp_context_pbase;
 343                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
 344                 nes_post_cqp_request(nesdev, cqp_request);
 345         }
 346 }
 347
 348
 349 /**
 350  * nes_get_qp
 351  */
 352 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
 353 {
 354         struct nes_vnic *nesvnic = to_nesvnic(device);
 355         struct nes_device *nesdev = nesvnic->nesdev;
 356         struct nes_adapter *nesadapter = nesdev->nesadapter;
 357
 358         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
 359                 return NULL;
 360
 361         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
 362 }
 363
 364
 365 /**
 366  * nes_print_macaddr
 367  */
 368 static void nes_print_macaddr(struct net_device *netdev)
 369 {
 370         nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
 371                   netdev->name, netdev->dev_addr, netdev->irq);
 372 }
 373
 374 /**
 375  * nes_interrupt - handle interrupts
 376  */
 377 static irqreturn_t nes_interrupt(int irq, void *dev_id)
 378 {
 379         struct nes_device *nesdev = (struct nes_device *)dev_id;
 380         int handled = 0;
 381         u32 int_mask;
 382         u32 int_req;
 383         u32 int_stat;
 384         u32 intf_int_stat;
 385         u32 timer_stat;
 386
 387         if (nesdev->msi_enabled) {
 388                 /* No need to read the interrupt pending register if msi is enabled */
 389                 handled = 1;
 390         } else {
 391                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
 392                         /* Master interrupt enable provides synchronization for kicking off bottom half
 393                           when interrupt sharing is going on */
 394                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
 395                         if (int_mask & 0x80000000) {
 396                                 /* Check interrupt status to see if this might be ours */
 397                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
 398                                 int_req = nesdev->int_req;
 399                                 if (int_stat&int_req) {
 400                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
 401                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
 402                                                 handled = 1;
 403                                         } else {
 404                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
 405                                                         /* Timer might be running but might be for another function */
 406                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
 407                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
 408                                                                 handled = 1;
 409                                                         }
 410                                                 }
 411                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
 412                                                                 (handled == 0)) {
 413                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
 414                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
 415                                                                 handled = 1;
 416                                                         }
 417                                                 }
 418                                         }
 419                                         if (handled) {
 420                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
 421                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
 422                                                 /* Save off the status to save an additional read */
 423                                                 nesdev->int_stat = int_stat;
 424                                                 nesdev->napi_isr_ran = 1;
 425                                         }
 426                                 }
 427                         }
 428                 } else {
 429                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
 430                 }
 431         }
 432
 433         if (handled) {
 434
 435                 if (nes_napi_isr(nesdev) == 0) {
 436                         tasklet_schedule(&nesdev->dpc_tasklet);
 437
 438                 }
 439                 return IRQ_HANDLED;
 440         } else {
 441                 return IRQ_NONE;
 442         }
 443 }
 444
 445
 446 /**
 447  * nes_probe - Device initialization
 448  */
 449 static int nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 450 {
 451         struct net_device *netdev = NULL;
 452         struct nes_device *nesdev = NULL;
 453         int ret = 0;
 454         void __iomem *mmio_regs = NULL;
 455         u8 hw_rev;
 456
 457         assert(pcidev != NULL);
 458         assert(ent != NULL);
 459
 460         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
 461                         DRV_VERSION, pci_name(pcidev));
 462
 463         ret = pci_enable_device(pcidev);
 464         if (ret) {
 465                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
 466                 goto bail0;
 467         }
 468
 469         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
 470                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
 471                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
 472         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
 473                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
 474                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
 475
 476         /* Make sure PCI base addr are MMIO */
 477         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
 478                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
 479                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
 480                 ret = -ENODEV;
 481                 goto bail1;
 482         }
 483
 484         /* Reserve PCI I/O and memory resources */
 485         ret = pci_request_regions(pcidev, DRV_NAME);
 486         if (ret) {
 487                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
 488                 goto bail1;
 489         }
 490
 491         if ((sizeof(dma_addr_t) > 4)) {
 492                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
 493                 if (ret < 0) {
 494                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
 495                         goto bail2;
 496                 }
 497                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
 498                 if (ret) {
 499                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
 500                         goto bail2;
 501                 }
 502         } else {
 503                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
 504                 if (ret < 0) {
 505                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
 506                         goto bail2;
 507                 }
 508                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
 509                 if (ret) {
 510                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
 511                         goto bail2;
 512                 }
 513         }
 514
 515         pci_set_master(pcidev);
 516
 517         /* Allocate hardware structure */
 518         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
 519         if (!nesdev) {
 520                 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
 521                 ret = -ENOMEM;
 522                 goto bail2;
 523         }
 524
 525         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
 526         nesdev->pcidev = pcidev;
 527         pci_set_drvdata(pcidev, nesdev);
 528
 529         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
 530         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
 531
 532         spin_lock_init(&nesdev->indexed_regs_lock);
 533
 534         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
 535         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
 536                                     pci_resource_len(pcidev, BAR_0));
 537         if (mmio_regs == NULL) {
 538                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
 539                 ret = -EIO;
 540                 goto bail3;
 541         }
 542         nesdev->regs = mmio_regs;
 543         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
 544
 545         /* Ensure interrupts are disabled */
 546         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
 547
 548         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
 549                 if (!pci_enable_msi(nesdev->pcidev)) {
 550                         nesdev->msi_enabled = 1;
 551                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
 552                                         pci_name(pcidev));
 553                 } else {
 554                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
 555                                         pci_name(pcidev));
 556                 }
 557         } else {
 558                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
 559                                 pci_name(pcidev));
 560         }
 561
 562         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
 563         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
 564
 565         /* Init the adapter */
 566         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
 567         if (!nesdev->nesadapter) {
 568                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
 569                 ret = -ENOMEM;
 570                 goto bail5;
 571         }
 572         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
 573         nesdev->nesadapter->wqm_quanta = wqm_quanta;
 574
 575         /* nesdev->base_doorbell_index =
 576                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 577         nesdev->base_doorbell_index = 1;
 578         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 579         if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
 580                 switch (PCI_FUNC(nesdev->pcidev->devfn) %
 581                         nesdev->nesadapter->port_count) {
 582                 case 1:
 583                         nesdev->mac_index = 2;
 584                         break;
 585                 case 2:
 586                         nesdev->mac_index = 1;
 587                         break;
 588                 case 3:
 589                         nesdev->mac_index = 3;
 590                         break;
 591                 case 0:
 592                 default:
 593                         nesdev->mac_index = 0;
 594                 }
 595         } else {
 596                 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
 597                                                 nesdev->nesadapter->port_count;
 598         }
 599
 600         if ((limit_maxrdreqsz ||
 601              ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
 602               (hw_rev == NE020_REV1))) &&
 603             (pcie_get_readrq(pcidev) > 256)) {
 604                 if (pcie_set_readrq(pcidev, 256))
 605                         printk(KERN_ERR PFX "Unable to set max read request"
 606                                 " to 256 bytes\n");
 607                 else
 608                         nes_debug(NES_DBG_INIT, "Max read request size set"
 609                                 " to 256 bytes\n");
 610         }
 611
 612         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 613
 614         /* bring up the Control QP */
 615         if (nes_init_cqp(nesdev)) {
 616                 ret = -ENODEV;
 617                 goto bail6;
 618         }
 619
 620         /* Arm the CCQ */
 621         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 622                         PCI_FUNC(nesdev->pcidev->devfn));
 623         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 624
 625         /* Enable the interrupts */
 626         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 627                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 628         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 629                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
 630         }
 631
 632         /* TODO: This really should be the first driver to load, not function 0 */
 633         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 634                 /* pick up PCI and critical errors if the first driver to load */
 635                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 636                 nesdev->int_req |= NES_INT_INTF;
 637         } else {
 638                 nesdev->intf_int_req = 0;
 639         }
 640         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 641         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 642         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 643         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 644         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 645
 646         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 647
 648         /* deal with both periodic and one_shot */
 649         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 650         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 651         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 652                         PCI_FUNC(nesdev->pcidev->devfn),
 653                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 654
 655         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 656
 657         list_add_tail(&nesdev->list, &nes_dev_list);
 658
 659         /* Request an interrupt line for the driver */
 660         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 661         if (ret) {
 662                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 663                                 pci_name(pcidev), pcidev->irq);
 664                 goto bail65;
 665         }
 666
 667         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 668
 669         if (nes_notifiers_registered == 0) {
 670                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 671                 register_netevent_notifier(&nes_net_notifier);
 672         }
 673         nes_notifiers_registered++;
 674
 675         INIT_DELAYED_WORK(&nesdev->work, nes_recheck_link_status);
 676
 677         /* Initialize network devices */
 678         if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL)
 679                 goto bail7;
 680
 681         /* Register network device */
 682         ret = register_netdev(netdev);
 683         if (ret) {
 684                 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 685                 nes_netdev_destroy(netdev);
 686                 goto bail7;
 687         }
 688
 689         nes_print_macaddr(netdev);
 690
 691         nesdev->netdev_count++;
 692         nesdev->nesadapter->netdev_count++;
 693
 694         printk(KERN_INFO PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 695                         pci_name(pcidev));
 696         return 0;
 697
 698         bail7:
 699         printk(KERN_ERR PFX "bail7\n");
 700         while (nesdev->netdev_count > 0) {
 701                 nesdev->netdev_count--;
 702                 nesdev->nesadapter->netdev_count--;
 703
 704                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 705                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 706         }
 707
 708         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 709                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 710
 711         nes_notifiers_registered--;
 712         if (nes_notifiers_registered == 0) {
 713                 unregister_netevent_notifier(&nes_net_notifier);
 714                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 715         }
 716
 717         list_del(&nesdev->list);
 718         nes_destroy_cqp(nesdev);
 719
 720         bail65:
 721         printk(KERN_ERR PFX "bail65\n");
 722         free_irq(pcidev->irq, nesdev);
 723         if (nesdev->msi_enabled) {
 724                 pci_disable_msi(pcidev);
 725         }
 726         bail6:
 727         printk(KERN_ERR PFX "bail6\n");
 728         tasklet_kill(&nesdev->dpc_tasklet);
 729         /* Deallocate the Adapter Structure */
 730         nes_destroy_adapter(nesdev->nesadapter);
 731
 732         bail5:
 733         printk(KERN_ERR PFX "bail5\n");
 734         iounmap(nesdev->regs);
 735
 736         bail3:
 737         printk(KERN_ERR PFX "bail3\n");
 738         kfree(nesdev);
 739
 740         bail2:
 741         pci_release_regions(pcidev);
 742
 743         bail1:
 744         pci_disable_device(pcidev);
 745
 746         bail0:
 747         return ret;
 748 }
 749
 750
 751 /**
 752  * nes_remove - unload from kernel
 753  */
 754 static void nes_remove(struct pci_dev *pcidev)
 755 {
 756         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 757         struct net_device *netdev;
 758         int netdev_index = 0;
 759         unsigned long flags;
 760
 761                 if (nesdev->netdev_count) {
 762                         netdev = nesdev->netdev[netdev_index];
 763                         if (netdev) {
 764                                 netif_stop_queue(netdev);
 765                                 unregister_netdev(netdev);
 766                                 nes_netdev_destroy(netdev);
 767
 768                                 nesdev->netdev[netdev_index] = NULL;
 769                                 nesdev->netdev_count--;
 770                                 nesdev->nesadapter->netdev_count--;
 771                         }
 772                 }
 773
 774         nes_notifiers_registered--;
 775         if (nes_notifiers_registered == 0) {
 776                 unregister_netevent_notifier(&nes_net_notifier);
 777                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 778         }
 779
 780         list_del(&nesdev->list);
 781         nes_destroy_cqp(nesdev);
 782
 783         free_irq(pcidev->irq, nesdev);
 784         tasklet_kill(&nesdev->dpc_tasklet);
 785
 786         spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
 787         if (nesdev->link_recheck) {
 788                 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
 789                 cancel_delayed_work_sync(&nesdev->work);
 790         } else {
 791                 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
 792         }
 793
 794         /* Deallocate the Adapter Structure */
 795         nes_destroy_adapter(nesdev->nesadapter);
 796
 797         if (nesdev->msi_enabled) {
 798                 pci_disable_msi(pcidev);
 799         }
 800
 801         iounmap(nesdev->regs);
 802         kfree(nesdev);
 803
 804         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 805         pci_release_regions(pcidev);
 806         pci_disable_device(pcidev);
 807         pci_set_drvdata(pcidev, NULL);
 808 }
 809
 810
 811 static struct pci_driver nes_pci_driver = {
 812         .name = DRV_NAME,
 813         .id_table = nes_pci_table,
 814         .probe = nes_probe,
 815         .remove = nes_remove,
 816 };
 817
 818 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 819 {
 820         unsigned int  devfn = 0xffffffff;
 821         unsigned char bus_number = 0xff;
 822         unsigned int  i = 0;
 823         struct nes_device *nesdev;
 824
 825         list_for_each_entry(nesdev, &nes_dev_list, list) {
 826                 if (i == ee_flsh_adapter) {
 827                         devfn = nesdev->pcidev->devfn;
 828                         bus_number = nesdev->pcidev->bus->number;
 829                         break;
 830                 }
 831                 i++;
 832         }
 833
 834         return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
 835 }
 836
 837 static ssize_t nes_store_adapter(struct device_driver *ddp,
 838         const char *buf, size_t count)
 839 {
 840         char *p = (char *)buf;
 841
 842         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 843         return strnlen(buf, count);
 844 }
 845
 846 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 847 {
 848         u32 eeprom_cmd = 0xdead;
 849         u32 i = 0;
 850         struct nes_device *nesdev;
 851
 852         list_for_each_entry(nesdev, &nes_dev_list, list) {
 853                 if (i == ee_flsh_adapter) {
 854                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 855                         break;
 856                 }
 857                 i++;
 858         }
 859         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 860 }
 861
 862 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 863         const char *buf, size_t count)
 864 {
 865         char *p = (char *)buf;
 866         u32 val;
 867         u32 i = 0;
 868         struct nes_device *nesdev;
 869
 870         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 871                 val = simple_strtoul(p, &p, 16);
 872                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 873                         if (i == ee_flsh_adapter) {
 874                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 875                                 break;
 876                         }
 877                         i++;
 878                 }
 879         }
 880         return strnlen(buf, count);
 881 }
 882
 883 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 884 {
 885         u32 eeprom_data = 0xdead;
 886         u32 i = 0;
 887         struct nes_device *nesdev;
 888
 889         list_for_each_entry(nesdev, &nes_dev_list, list) {
 890                 if (i == ee_flsh_adapter) {
 891                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 892                         break;
 893                 }
 894                 i++;
 895         }
 896
 897         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 898 }
 899
 900 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 901         const char *buf, size_t count)
 902 {
 903         char *p = (char *)buf;
 904         u32 val;
 905         u32 i = 0;
 906         struct nes_device *nesdev;
 907
 908         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 909                 val = simple_strtoul(p, &p, 16);
 910                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 911                         if (i == ee_flsh_adapter) {
 912                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 913                                 break;
 914                         }
 915                         i++;
 916                 }
 917         }
 918         return strnlen(buf, count);
 919 }
 920
 921 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 922 {
 923         u32 flash_cmd = 0xdead;
 924         u32 i = 0;
 925         struct nes_device *nesdev;
 926
 927         list_for_each_entry(nesdev, &nes_dev_list, list) {
 928                 if (i == ee_flsh_adapter) {
 929                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 930                         break;
 931                 }
 932                 i++;
 933         }
 934
 935         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 936 }
 937
 938 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 939         const char *buf, size_t count)
 940 {
 941         char *p = (char *)buf;
 942         u32 val;
 943         u32 i = 0;
 944         struct nes_device *nesdev;
 945
 946         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 947                 val = simple_strtoul(p, &p, 16);
 948                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 949                         if (i == ee_flsh_adapter) {
 950                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 951                                 break;
 952                         }
 953                         i++;
 954                 }
 955         }
 956         return strnlen(buf, count);
 957 }
 958
 959 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 960 {
 961         u32 flash_data = 0xdead;
 962         u32 i = 0;
 963         struct nes_device *nesdev;
 964
 965         list_for_each_entry(nesdev, &nes_dev_list, list) {
 966                 if (i == ee_flsh_adapter) {
 967                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 968                         break;
 969                 }
 970                 i++;
 971         }
 972
 973         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 974 }
 975
 976 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 977         const char *buf, size_t count)
 978 {
 979         char *p = (char *)buf;
 980         u32 val;
 981         u32 i = 0;
 982         struct nes_device *nesdev;
 983
 984         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 985                 val = simple_strtoul(p, &p, 16);
 986                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 987                         if (i == ee_flsh_adapter) {
 988                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 989                                 break;
 990                         }
 991                         i++;
 992                 }
 993         }
 994         return strnlen(buf, count);
 995 }
 996
 997 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 998 {
 999         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
1000 }
1001
1002 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
1003         const char *buf, size_t count)
1004 {
1005         char *p = (char *)buf;
1006
1007         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1008                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
1009
1010         return strnlen(buf, count);
1011 }
1012
1013 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
1014 {
1015         u32 nonidx_data = 0xdead;
1016         u32 i = 0;
1017         struct nes_device *nesdev;
1018
1019         list_for_each_entry(nesdev, &nes_dev_list, list) {
1020                 if (i == ee_flsh_adapter) {
1021                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
1022                         break;
1023                 }
1024                 i++;
1025         }
1026
1027         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1028 }
1029
1030 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1031         const char *buf, size_t count)
1032 {
1033         char *p = (char *)buf;
1034         u32 val;
1035         u32 i = 0;
1036         struct nes_device *nesdev;
1037
1038         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1039                 val = simple_strtoul(p, &p, 16);
1040                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1041                         if (i == ee_flsh_adapter) {
1042                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1043                                 break;
1044                         }
1045                         i++;
1046                 }
1047         }
1048         return strnlen(buf, count);
1049 }
1050
1051 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1052 {
1053         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1054 }
1055
1056 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1057         const char *buf, size_t count)
1058 {
1059         char *p = (char *)buf;
1060
1061         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1062                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1063
1064         return strnlen(buf, count);
1065 }
1066
1067 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1068 {
1069         u32 idx_data = 0xdead;
1070         u32 i = 0;
1071         struct nes_device *nesdev;
1072
1073         list_for_each_entry(nesdev, &nes_dev_list, list) {
1074                 if (i == ee_flsh_adapter) {
1075                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1076                         break;
1077                 }
1078                 i++;
1079         }
1080
1081         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1082 }
1083
1084 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1085         const char *buf, size_t count)
1086 {
1087         char *p = (char *)buf;
1088         u32 val;
1089         u32 i = 0;
1090         struct nes_device *nesdev;
1091
1092         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1093                 val = simple_strtoul(p, &p, 16);
1094                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1095                         if (i == ee_flsh_adapter) {
1096                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1097                                 break;
1098                         }
1099                         i++;
1100                 }
1101         }
1102         return strnlen(buf, count);
1103 }
1104
1105
1106 /**
1107  * nes_show_wqm_quanta
1108  */
1109 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1110 {
1111         u32 wqm_quanta_value = 0xdead;
1112         u32 i = 0;
1113         struct nes_device *nesdev;
1114
1115         list_for_each_entry(nesdev, &nes_dev_list, list) {
1116                 if (i == ee_flsh_adapter) {
1117                         wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1118                         break;
1119                 }
1120                 i++;
1121         }
1122
1123         return  snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta_value);
1124 }
1125
1126
1127 /**
1128  * nes_store_wqm_quanta
1129  */
1130 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1131                                         const char *buf, size_t count)
1132 {
1133         unsigned long wqm_quanta_value;
1134         u32 wqm_config1;
1135         u32 i = 0;
1136         struct nes_device *nesdev;
1137
1138         if (kstrtoul(buf, 0, &wqm_quanta_value) < 0)
1139                 return -EINVAL;
1140
1141         list_for_each_entry(nesdev, &nes_dev_list, list) {
1142                 if (i == ee_flsh_adapter) {
1143                         nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1144                         wqm_config1 = nes_read_indexed(nesdev,
1145                                                 NES_IDX_WQM_CONFIG1);
1146                         nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1147                                         ((wqm_quanta_value << 1) |
1148                                         (wqm_config1 & 0x00000001)));
1149                         break;
1150                 }
1151                 i++;
1152         }
1153         return strnlen(buf, count);
1154 }
1155
1156 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1157                    nes_show_adapter, nes_store_adapter);
1158 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1159                    nes_show_ee_cmd, nes_store_ee_cmd);
1160 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1161                    nes_show_ee_data, nes_store_ee_data);
1162 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1163                    nes_show_flash_cmd, nes_store_flash_cmd);
1164 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1165                    nes_show_flash_data, nes_store_flash_data);
1166 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1167                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1168 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1169                    nes_show_nonidx_data, nes_store_nonidx_data);
1170 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1171                    nes_show_idx_addr, nes_store_idx_addr);
1172 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1173                    nes_show_idx_data, nes_store_idx_data);
1174 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1175                    nes_show_wqm_quanta, nes_store_wqm_quanta);
1176
1177 static int nes_create_driver_sysfs(struct pci_driver *drv)
1178 {
1179         int error;
1180         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1181         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1182         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1183         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1184         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1185         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1186         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1187         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1188         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1189         error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1190         return error;
1191 }
1192
1193 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1194 {
1195         driver_remove_file(&drv->driver, &driver_attr_adapter);
1196         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1197         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1198         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1199         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1200         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1201         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1202         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1203         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1204         driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1205 }
1206
1207 /**
1208  * nes_init_module - module initialization entry point
1209  */
1210 static int __init nes_init_module(void)
1211 {
1212         int retval;
1213         int retval1;
1214
1215         retval = nes_cm_start();
1216         if (retval) {
1217                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1218                 return retval;
1219         }
1220         retval = pci_register_driver(&nes_pci_driver);
1221         if (retval >= 0) {
1222                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1223                 if (retval1 < 0)
1224                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1225         }
1226         return retval;
1227 }
1228
1229
1230 /**
1231  * nes_exit_module - module unload entry point
1232  */
1233 static void __exit nes_exit_module(void)
1234 {
1235         nes_cm_stop();
1236         nes_remove_driver_sysfs(&nes_pci_driver);
1237
1238         pci_unregister_driver(&nes_pci_driver);
1239 }
1240
1241
1242 module_init(nes_init_module);
1243 module_exit(nes_exit_module);