drivers/infiniband/hw/nes/nes.c

   1 /*
   2  * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
   3  * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/ethtool.h>
  39 #include <linux/mii.h>
  40 #include <linux/if_vlan.h>
  41 #include <linux/crc32.h>
  42 #include <linux/in.h>
  43 #include <linux/fs.h>
  44 #include <linux/init.h>
  45 #include <linux/if_arp.h>
  46 #include <linux/highmem.h>
  47 #include <asm/io.h>
  48 #include <asm/irq.h>
  49 #include <asm/byteorder.h>
  50 #include <rdma/ib_smi.h>
  51 #include <rdma/ib_verbs.h>
  52 #include <rdma/ib_pack.h>
  53 #include <rdma/iw_cm.h>
  54
  55 #include "nes.h"
  56
  57 #include <net/netevent.h>
  58 #include <net/neighbour.h>
  59 #include <linux/route.h>
  60 #include <net/ip_fib.h>
  61
  62 MODULE_AUTHOR("NetEffect");
  63 MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
  64 MODULE_LICENSE("Dual BSD/GPL");
  65 MODULE_VERSION(DRV_VERSION);
  66
  67 int max_mtu = 9000;
  68 int interrupt_mod_interval = 0;
  69
  70
  71 /* Interoperability */
  72 int mpa_version = 1;
  73 module_param(mpa_version, int, 0);
  74 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
  75
  76 /* Interoperability */
  77 int disable_mpa_crc = 0;
  78 module_param(disable_mpa_crc, int, 0);
  79 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
  80
  81 unsigned int send_first = 0;
  82 module_param(send_first, int, 0);
  83 MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
  84
  85
  86 unsigned int nes_drv_opt = 0;
  87 module_param(nes_drv_opt, int, 0);
  88 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
  89
  90 unsigned int nes_debug_level = 0;
  91 module_param_named(debug_level, nes_debug_level, uint, 0644);
  92 MODULE_PARM_DESC(debug_level, "Enable debug output level");
  93
  94 LIST_HEAD(nes_adapter_list);
  95 static LIST_HEAD(nes_dev_list);
  96
  97 atomic_t qps_destroyed;
  98
  99 static unsigned int ee_flsh_adapter;
 100 static unsigned int sysfs_nonidx_addr;
 101 static unsigned int sysfs_idx_addr;
 102
 103 static struct pci_device_id nes_pci_table[] = {
 104         {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
 105         {0}
 106 };
 107
 108 MODULE_DEVICE_TABLE(pci, nes_pci_table);
 109
 110 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
 111 static int nes_net_event(struct notifier_block *, unsigned long, void *);
 112 static int nes_notifiers_registered;
 113
 114
 115 static struct notifier_block nes_inetaddr_notifier = {
 116         .notifier_call = nes_inetaddr_event
 117 };
 118
 119 static struct notifier_block nes_net_notifier = {
 120         .notifier_call = nes_net_event
 121 };
 122
 123
 124
 125
 126 /**
 127  * nes_inetaddr_event
 128  */
 129 static int nes_inetaddr_event(struct notifier_block *notifier,
 130                 unsigned long event, void *ptr)
 131 {
 132         struct in_ifaddr *ifa = ptr;
 133         struct net_device *event_netdev = ifa->ifa_dev->dev;
 134         struct nes_device *nesdev;
 135         struct net_device *netdev;
 136         struct nes_vnic *nesvnic;
 137         unsigned int addr;
 138         unsigned int mask;
 139
 140         addr = ntohl(ifa->ifa_address);
 141         mask = ntohl(ifa->ifa_mask);
 142         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address " NIPQUAD_FMT
 143                   ", netmask " NIPQUAD_FMT ".\n",
 144                   HIPQUAD(addr), HIPQUAD(mask));
 145         list_for_each_entry(nesdev, &nes_dev_list, list) {
 146                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
 147                                 nesdev, nesdev->netdev[0]->name);
 148                 netdev = nesdev->netdev[0];
 149                 nesvnic = netdev_priv(netdev);
 150                 if (netdev == event_netdev) {
 151                         if (nesvnic->rdma_enabled == 0) {
 152                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
 153                                                 " RDMA is not enabled.\n",
 154                                                 netdev->name);
 155                                 return NOTIFY_OK;
 156                         }
 157                         /* we have ifa->ifa_address/mask here if we need it */
 158                         switch (event) {
 159                                 case NETDEV_DOWN:
 160                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
 161                                         nes_write_indexed(nesdev,
 162                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
 163
 164                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 165                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
 166                                         nesvnic->local_ipaddr = 0;
 167                                         return NOTIFY_OK;
 168                                         break;
 169                                 case NETDEV_UP:
 170                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
 171
 172                                         if (nesvnic->local_ipaddr != 0) {
 173                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
 174                                                 return NOTIFY_OK;
 175                                         }
 176                                         /* Add the address to the IP table */
 177                                         nesvnic->local_ipaddr = ifa->ifa_address;
 178
 179                                         nes_write_indexed(nesdev,
 180                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
 181                                                         ntohl(ifa->ifa_address));
 182                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
 183                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
 184                                         return NOTIFY_OK;
 185                                         break;
 186                                 default:
 187                                         break;
 188                         }
 189                 }
 190         }
 191
 192         return NOTIFY_DONE;
 193 }
 194
 195
 196 /**
 197  * nes_net_event
 198  */
 199 static int nes_net_event(struct notifier_block *notifier,
 200                 unsigned long event, void *ptr)
 201 {
 202         struct neighbour *neigh = ptr;
 203         struct nes_device *nesdev;
 204         struct net_device *netdev;
 205         struct nes_vnic *nesvnic;
 206
 207         switch (event) {
 208                 case NETEVENT_NEIGH_UPDATE:
 209                         list_for_each_entry(nesdev, &nes_dev_list, list) {
 210                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
 211                                 netdev = nesdev->netdev[0];
 212                                 nesvnic = netdev_priv(netdev);
 213                                 if (netdev == neigh->dev) {
 214                                         if (nesvnic->rdma_enabled == 0) {
 215                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
 216                                                                 netdev->name);
 217                                         } else {
 218                                                 if (neigh->nud_state & NUD_VALID) {
 219                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 220                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
 221                                                 } else {
 222                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
 223                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
 224                                                 }
 225                                         }
 226                                         return NOTIFY_OK;
 227                                 }
 228                         }
 229                         break;
 230                 default:
 231                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
 232                         break;
 233         }
 234
 235         return NOTIFY_DONE;
 236 }
 237
 238
 239 /**
 240  * nes_add_ref
 241  */
 242 void nes_add_ref(struct ib_qp *ibqp)
 243 {
 244         struct nes_qp *nesqp;
 245
 246         nesqp = to_nesqp(ibqp);
 247         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
 248                         ibqp->qp_num, atomic_read(&nesqp->refcount));
 249         atomic_inc(&nesqp->refcount);
 250 }
 251
 252 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
 253 {
 254         unsigned long flags;
 255         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 256         struct nes_adapter *nesadapter = nesdev->nesadapter;
 257         u32 qp_id;
 258
 259         atomic_inc(&qps_destroyed);
 260
 261         /* Free the control structures */
 262
 263         qp_id = nesqp->hwqp.qp_id;
 264         if (nesqp->pbl_vbase) {
 265                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 266                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 267                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 268                 nesadapter->free_256pbl++;
 269                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 270                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 271                 nesqp->pbl_vbase = NULL;
 272
 273         } else {
 274                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 275                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 276         }
 277         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
 278
 279         nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
 280         kfree(nesqp->allocated_buffer);
 281
 282 }
 283
 284 /**
 285  * nes_rem_ref
 286  */
 287 void nes_rem_ref(struct ib_qp *ibqp)
 288 {
 289         u64 u64temp;
 290         struct nes_qp *nesqp;
 291         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 292         struct nes_device *nesdev = nesvnic->nesdev;
 293         struct nes_hw_cqp_wqe *cqp_wqe;
 294         struct nes_cqp_request *cqp_request;
 295         u32 opcode;
 296
 297         nesqp = to_nesqp(ibqp);
 298
 299         if (atomic_read(&nesqp->refcount) == 0) {
 300                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
 301                                 __func__, ibqp->qp_num, nesqp->last_aeq);
 302                 BUG();
 303         }
 304
 305         if (atomic_dec_and_test(&nesqp->refcount)) {
 306                 /* Destroy the QP */
 307                 cqp_request = nes_get_cqp_request(nesdev);
 308                 if (cqp_request == NULL) {
 309                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
 310                         return;
 311                 }
 312                 cqp_request->waiting = 0;
 313                 cqp_request->callback = 1;
 314                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
 315                 cqp_request->cqp_callback_pointer = nesqp;
 316                 cqp_wqe = &cqp_request->cqp_wqe;
 317
 318                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 319                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
 320
 321                 if (nesqp->hte_added) {
 322                         opcode  |= NES_CQP_QP_DEL_HTE;
 323                         nesqp->hte_added = 0;
 324                 }
 325                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 326                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
 327                 u64temp = (u64)nesqp->nesqp_context_pbase;
 328                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
 329                 nes_post_cqp_request(nesdev, cqp_request);
 330         }
 331 }
 332
 333
 334 /**
 335  * nes_get_qp
 336  */
 337 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
 338 {
 339         struct nes_vnic *nesvnic = to_nesvnic(device);
 340         struct nes_device *nesdev = nesvnic->nesdev;
 341         struct nes_adapter *nesadapter = nesdev->nesadapter;
 342
 343         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
 344                 return NULL;
 345
 346         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
 347 }
 348
 349
 350 /**
 351  * nes_print_macaddr
 352  */
 353 static void nes_print_macaddr(struct net_device *netdev)
 354 {
 355         DECLARE_MAC_BUF(mac);
 356
 357         nes_debug(NES_DBG_INIT, "%s: %s, IRQ %u\n",
 358                   netdev->name, print_mac(mac, netdev->dev_addr), netdev->irq);
 359 }
 360
 361 /**
 362  * nes_interrupt - handle interrupts
 363  */
 364 static irqreturn_t nes_interrupt(int irq, void *dev_id)
 365 {
 366         struct nes_device *nesdev = (struct nes_device *)dev_id;
 367         int handled = 0;
 368         u32 int_mask;
 369         u32 int_req;
 370         u32 int_stat;
 371         u32 intf_int_stat;
 372         u32 timer_stat;
 373
 374         if (nesdev->msi_enabled) {
 375                 /* No need to read the interrupt pending register if msi is enabled */
 376                 handled = 1;
 377         } else {
 378                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
 379                         /* Master interrupt enable provides synchronization for kicking off bottom half
 380                           when interrupt sharing is going on */
 381                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
 382                         if (int_mask & 0x80000000) {
 383                                 /* Check interrupt status to see if this might be ours */
 384                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
 385                                 int_req = nesdev->int_req;
 386                                 if (int_stat&int_req) {
 387                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
 388                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
 389                                                 handled = 1;
 390                                         } else {
 391                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
 392                                                         /* Timer might be running but might be for another function */
 393                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
 394                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
 395                                                                 handled = 1;
 396                                                         }
 397                                                 }
 398                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
 399                                                                 (handled == 0)) {
 400                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
 401                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
 402                                                                 handled = 1;
 403                                                         }
 404                                                 }
 405                                         }
 406                                         if (handled) {
 407                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
 408                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
 409                                                 /* Save off the status to save an additional read */
 410                                                 nesdev->int_stat = int_stat;
 411                                                 nesdev->napi_isr_ran = 1;
 412                                         }
 413                                 }
 414                         }
 415                 } else {
 416                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
 417                 }
 418         }
 419
 420         if (handled) {
 421
 422                 if (nes_napi_isr(nesdev) == 0) {
 423                         tasklet_schedule(&nesdev->dpc_tasklet);
 424
 425                 }
 426                 return IRQ_HANDLED;
 427         } else {
 428                 return IRQ_NONE;
 429         }
 430 }
 431
 432
 433 /**
 434  * nes_probe - Device initialization
 435  */
 436 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
 437 {
 438         struct net_device *netdev = NULL;
 439         struct nes_device *nesdev = NULL;
 440         int ret = 0;
 441         struct nes_vnic *nesvnic = NULL;
 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_64BIT_MASK);
 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_64BIT_MASK);
 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_32BIT_MASK);
 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_32BIT_MASK);
 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), sizeof(mmio_regs));
 524         if (mmio_regs == NULL) {
 525                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
 526                 ret = -EIO;
 527                 goto bail3;
 528         }
 529         nesdev->regs = mmio_regs;
 530         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
 531
 532         /* Ensure interrupts are disabled */
 533         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
 534
 535         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
 536                 if (!pci_enable_msi(nesdev->pcidev)) {
 537                         nesdev->msi_enabled = 1;
 538                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
 539                                         pci_name(pcidev));
 540                 } else {
 541                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
 542                                         pci_name(pcidev));
 543                 }
 544         } else {
 545                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
 546                                 pci_name(pcidev));
 547         }
 548
 549         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
 550         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
 551
 552         /* Init the adapter */
 553         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
 554         if (!nesdev->nesadapter) {
 555                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
 556                 ret = -ENOMEM;
 557                 goto bail5;
 558         }
 559         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
 560
 561         /* nesdev->base_doorbell_index =
 562                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
 563         nesdev->base_doorbell_index = 1;
 564         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
 565         nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
 566
 567         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 568
 569         /* bring up the Control QP */
 570         if (nes_init_cqp(nesdev)) {
 571                 ret = -ENODEV;
 572                 goto bail6;
 573         }
 574
 575         /* Arm the CCQ */
 576         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
 577                         PCI_FUNC(nesdev->pcidev->devfn));
 578         nes_read32(nesdev->regs+NES_CQE_ALLOC);
 579
 580         /* Enable the interrupts */
 581         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
 582                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 583         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
 584                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
 585         }
 586
 587         /* TODO: This really should be the first driver to load, not function 0 */
 588         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
 589                 /* pick up PCI and critical errors if the first driver to load */
 590                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
 591                 nesdev->int_req |= NES_INT_INTF;
 592         } else {
 593                 nesdev->intf_int_req = 0;
 594         }
 595         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
 596         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
 597         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
 598         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
 599         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
 600
 601         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
 602
 603         /* deal with both periodic and one_shot */
 604         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
 605         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
 606         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
 607                         PCI_FUNC(nesdev->pcidev->devfn),
 608                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
 609
 610         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
 611
 612         list_add_tail(&nesdev->list, &nes_dev_list);
 613
 614         /* Request an interrupt line for the driver */
 615         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
 616         if (ret) {
 617                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
 618                                 pci_name(pcidev), pcidev->irq);
 619                 goto bail65;
 620         }
 621
 622         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
 623
 624         if (nes_notifiers_registered == 0) {
 625                 register_inetaddr_notifier(&nes_inetaddr_notifier);
 626                 register_netevent_notifier(&nes_net_notifier);
 627         }
 628         nes_notifiers_registered++;
 629
 630         /* Initialize network devices */
 631                 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
 632                         goto bail7;
 633                 }
 634
 635                 /* Register network device */
 636                 ret = register_netdev(netdev);
 637                 if (ret) {
 638                         printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
 639                         nes_netdev_destroy(netdev);
 640                         goto bail7;
 641                 }
 642
 643                 nes_print_macaddr(netdev);
 644                 /* create a CM core for this netdev */
 645                 nesvnic = netdev_priv(netdev);
 646
 647                 nesdev->netdev_count++;
 648                 nesdev->nesadapter->netdev_count++;
 649
 650
 651         printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
 652                         pci_name(pcidev));
 653         return 0;
 654
 655         bail7:
 656         printk(KERN_ERR PFX "bail7\n");
 657         while (nesdev->netdev_count > 0) {
 658                 nesdev->netdev_count--;
 659                 nesdev->nesadapter->netdev_count--;
 660
 661                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
 662                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
 663         }
 664
 665         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
 666                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
 667
 668         nes_notifiers_registered--;
 669         if (nes_notifiers_registered == 0) {
 670                 unregister_netevent_notifier(&nes_net_notifier);
 671                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 672         }
 673
 674         list_del(&nesdev->list);
 675         nes_destroy_cqp(nesdev);
 676
 677         bail65:
 678         printk(KERN_ERR PFX "bail65\n");
 679         free_irq(pcidev->irq, nesdev);
 680         if (nesdev->msi_enabled) {
 681                 pci_disable_msi(pcidev);
 682         }
 683         bail6:
 684         printk(KERN_ERR PFX "bail6\n");
 685         tasklet_kill(&nesdev->dpc_tasklet);
 686         /* Deallocate the Adapter Structure */
 687         nes_destroy_adapter(nesdev->nesadapter);
 688
 689         bail5:
 690         printk(KERN_ERR PFX "bail5\n");
 691         iounmap(nesdev->regs);
 692
 693         bail3:
 694         printk(KERN_ERR PFX "bail3\n");
 695         kfree(nesdev);
 696
 697         bail2:
 698         pci_release_regions(pcidev);
 699
 700         bail1:
 701         pci_disable_device(pcidev);
 702
 703         bail0:
 704         return ret;
 705 }
 706
 707
 708 /**
 709  * nes_remove - unload from kernel
 710  */
 711 static void __devexit nes_remove(struct pci_dev *pcidev)
 712 {
 713         struct nes_device *nesdev = pci_get_drvdata(pcidev);
 714         struct net_device *netdev;
 715         int netdev_index = 0;
 716
 717                 if (nesdev->netdev_count) {
 718                         netdev = nesdev->netdev[netdev_index];
 719                         if (netdev) {
 720                                 netif_stop_queue(netdev);
 721                                 unregister_netdev(netdev);
 722                                 nes_netdev_destroy(netdev);
 723
 724                                 nesdev->netdev[netdev_index] = NULL;
 725                                 nesdev->netdev_count--;
 726                                 nesdev->nesadapter->netdev_count--;
 727                         }
 728                 }
 729
 730         nes_notifiers_registered--;
 731         if (nes_notifiers_registered == 0) {
 732                 unregister_netevent_notifier(&nes_net_notifier);
 733                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
 734         }
 735
 736         list_del(&nesdev->list);
 737         nes_destroy_cqp(nesdev);
 738
 739         free_irq(pcidev->irq, nesdev);
 740         tasklet_kill(&nesdev->dpc_tasklet);
 741
 742         /* Deallocate the Adapter Structure */
 743         nes_destroy_adapter(nesdev->nesadapter);
 744
 745         if (nesdev->msi_enabled) {
 746                 pci_disable_msi(pcidev);
 747         }
 748
 749         iounmap(nesdev->regs);
 750         kfree(nesdev);
 751
 752         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
 753         pci_release_regions(pcidev);
 754         pci_disable_device(pcidev);
 755         pci_set_drvdata(pcidev, NULL);
 756 }
 757
 758
 759 static struct pci_driver nes_pci_driver = {
 760         .name = DRV_NAME,
 761         .id_table = nes_pci_table,
 762         .probe = nes_probe,
 763         .remove = __devexit_p(nes_remove),
 764 };
 765
 766 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
 767 {
 768         unsigned int  devfn = 0xffffffff;
 769         unsigned char bus_number = 0xff;
 770         unsigned int  i = 0;
 771         struct nes_device *nesdev;
 772
 773         list_for_each_entry(nesdev, &nes_dev_list, list) {
 774                 if (i == ee_flsh_adapter) {
 775                         devfn      = nesdev->nesadapter->devfn;
 776                         bus_number = nesdev->nesadapter->bus_number;
 777                         break;
 778                 }
 779                 i++;
 780         }
 781
 782         return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
 783 }
 784
 785 static ssize_t nes_store_adapter(struct device_driver *ddp,
 786         const char *buf, size_t count)
 787 {
 788         char *p = (char *)buf;
 789
 790         ee_flsh_adapter = simple_strtoul(p, &p, 10);
 791         return strnlen(buf, count);
 792 }
 793
 794 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
 795 {
 796         u32 eeprom_cmd = 0xdead;
 797         u32 i = 0;
 798         struct nes_device *nesdev;
 799
 800         list_for_each_entry(nesdev, &nes_dev_list, list) {
 801                 if (i == ee_flsh_adapter) {
 802                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
 803                         break;
 804                 }
 805                 i++;
 806         }
 807         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
 808 }
 809
 810 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
 811         const char *buf, size_t count)
 812 {
 813         char *p = (char *)buf;
 814         u32 val;
 815         u32 i = 0;
 816         struct nes_device *nesdev;
 817
 818         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 819                 val = simple_strtoul(p, &p, 16);
 820                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 821                         if (i == ee_flsh_adapter) {
 822                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
 823                                 break;
 824                         }
 825                         i++;
 826                 }
 827         }
 828         return strnlen(buf, count);
 829 }
 830
 831 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
 832 {
 833         u32 eeprom_data = 0xdead;
 834         u32 i = 0;
 835         struct nes_device *nesdev;
 836
 837         list_for_each_entry(nesdev, &nes_dev_list, list) {
 838                 if (i == ee_flsh_adapter) {
 839                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
 840                         break;
 841                 }
 842                 i++;
 843         }
 844
 845         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
 846 }
 847
 848 static ssize_t nes_store_ee_data(struct device_driver *ddp,
 849         const char *buf, size_t count)
 850 {
 851         char *p = (char *)buf;
 852         u32 val;
 853         u32 i = 0;
 854         struct nes_device *nesdev;
 855
 856         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 857                 val = simple_strtoul(p, &p, 16);
 858                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 859                         if (i == ee_flsh_adapter) {
 860                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
 861                                 break;
 862                         }
 863                         i++;
 864                 }
 865         }
 866         return strnlen(buf, count);
 867 }
 868
 869 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
 870 {
 871         u32 flash_cmd = 0xdead;
 872         u32 i = 0;
 873         struct nes_device *nesdev;
 874
 875         list_for_each_entry(nesdev, &nes_dev_list, list) {
 876                 if (i == ee_flsh_adapter) {
 877                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
 878                         break;
 879                 }
 880                 i++;
 881         }
 882
 883         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
 884 }
 885
 886 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
 887         const char *buf, size_t count)
 888 {
 889         char *p = (char *)buf;
 890         u32 val;
 891         u32 i = 0;
 892         struct nes_device *nesdev;
 893
 894         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 895                 val = simple_strtoul(p, &p, 16);
 896                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 897                         if (i == ee_flsh_adapter) {
 898                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
 899                                 break;
 900                         }
 901                         i++;
 902                 }
 903         }
 904         return strnlen(buf, count);
 905 }
 906
 907 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
 908 {
 909         u32 flash_data = 0xdead;
 910         u32 i = 0;
 911         struct nes_device *nesdev;
 912
 913         list_for_each_entry(nesdev, &nes_dev_list, list) {
 914                 if (i == ee_flsh_adapter) {
 915                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
 916                         break;
 917                 }
 918                 i++;
 919         }
 920
 921         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
 922 }
 923
 924 static ssize_t nes_store_flash_data(struct device_driver *ddp,
 925         const char *buf, size_t count)
 926 {
 927         char *p = (char *)buf;
 928         u32 val;
 929         u32 i = 0;
 930         struct nes_device *nesdev;
 931
 932         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 933                 val = simple_strtoul(p, &p, 16);
 934                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 935                         if (i == ee_flsh_adapter) {
 936                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
 937                                 break;
 938                         }
 939                         i++;
 940                 }
 941         }
 942         return strnlen(buf, count);
 943 }
 944
 945 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
 946 {
 947         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
 948 }
 949
 950 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
 951         const char *buf, size_t count)
 952 {
 953         char *p = (char *)buf;
 954
 955         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
 956                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
 957
 958         return strnlen(buf, count);
 959 }
 960
 961 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
 962 {
 963         u32 nonidx_data = 0xdead;
 964         u32 i = 0;
 965         struct nes_device *nesdev;
 966
 967         list_for_each_entry(nesdev, &nes_dev_list, list) {
 968                 if (i == ee_flsh_adapter) {
 969                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
 970                         break;
 971                 }
 972                 i++;
 973         }
 974
 975         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
 976 }
 977
 978 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
 979         const char *buf, size_t count)
 980 {
 981         char *p = (char *)buf;
 982         u32 val;
 983         u32 i = 0;
 984         struct nes_device *nesdev;
 985
 986         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
 987                 val = simple_strtoul(p, &p, 16);
 988                 list_for_each_entry(nesdev, &nes_dev_list, list) {
 989                         if (i == ee_flsh_adapter) {
 990                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
 991                                 break;
 992                         }
 993                         i++;
 994                 }
 995         }
 996         return strnlen(buf, count);
 997 }
 998
 999 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1000 {
1001         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1002 }
1003
1004 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1005         const char *buf, size_t count)
1006 {
1007         char *p = (char *)buf;
1008
1009         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1010                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1011
1012         return strnlen(buf, count);
1013 }
1014
1015 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1016 {
1017         u32 idx_data = 0xdead;
1018         u32 i = 0;
1019         struct nes_device *nesdev;
1020
1021         list_for_each_entry(nesdev, &nes_dev_list, list) {
1022                 if (i == ee_flsh_adapter) {
1023                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1024                         break;
1025                 }
1026                 i++;
1027         }
1028
1029         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1030 }
1031
1032 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1033         const char *buf, size_t count)
1034 {
1035         char *p = (char *)buf;
1036         u32 val;
1037         u32 i = 0;
1038         struct nes_device *nesdev;
1039
1040         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1041                 val = simple_strtoul(p, &p, 16);
1042                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1043                         if (i == ee_flsh_adapter) {
1044                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1045                                 break;
1046                         }
1047                         i++;
1048                 }
1049         }
1050         return strnlen(buf, count);
1051 }
1052
1053 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1054                    nes_show_adapter, nes_store_adapter);
1055 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1056                    nes_show_ee_cmd, nes_store_ee_cmd);
1057 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1058                    nes_show_ee_data, nes_store_ee_data);
1059 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1060                    nes_show_flash_cmd, nes_store_flash_cmd);
1061 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1062                    nes_show_flash_data, nes_store_flash_data);
1063 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1064                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1065 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1066                    nes_show_nonidx_data, nes_store_nonidx_data);
1067 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1068                    nes_show_idx_addr, nes_store_idx_addr);
1069 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1070                    nes_show_idx_data, nes_store_idx_data);
1071
1072 static int nes_create_driver_sysfs(struct pci_driver *drv)
1073 {
1074         int error;
1075         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1076         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1077         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1078         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1079         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1080         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1081         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1082         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1083         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1084         return error;
1085 }
1086
1087 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1088 {
1089         driver_remove_file(&drv->driver, &driver_attr_adapter);
1090         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1091         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1092         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1093         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1094         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1095         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1096         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1097         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1098 }
1099
1100 /**
1101  * nes_init_module - module initialization entry point
1102  */
1103 static int __init nes_init_module(void)
1104 {
1105         int retval;
1106         int retval1;
1107
1108         retval = nes_cm_start();
1109         if (retval) {
1110                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1111                 return retval;
1112         }
1113         retval = pci_register_driver(&nes_pci_driver);
1114         if (retval >= 0) {
1115                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1116                 if (retval1 < 0)
1117                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1118         }
1119         return retval;
1120 }
1121
1122
1123 /**
1124  * nes_exit_module - module unload entry point
1125  */
1126 static void __exit nes_exit_module(void)
1127 {
1128         nes_cm_stop();
1129         nes_remove_driver_sysfs(&nes_pci_driver);
1130
1131         pci_unregister_driver(&nes_pci_driver);
1132 }
1133
1134
1135 module_init(nes_init_module);
1136 module_exit(nes_exit_module);