Version:  2.0.40 2.2.26 2.4.37 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6

Linux/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 /* Interoperability */
 72 int mpa_version = 1;
 73 module_param(mpa_version, int, 0644);
 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, 0644);
 79 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
 80 
 81 unsigned int nes_drv_opt = NES_DRV_OPT_DISABLE_INT_MOD | NES_DRV_OPT_ENABLE_PAU;
 82 module_param(nes_drv_opt, int, 0644);
 83 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
 84 
 85 unsigned int nes_debug_level = 0;
 86 module_param_named(debug_level, nes_debug_level, uint, 0644);
 87 MODULE_PARM_DESC(debug_level, "Enable debug output level");
 88 
 89 unsigned int wqm_quanta = 0x10000;
 90 module_param(wqm_quanta, int, 0644);
 91 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
 92 
 93 static bool limit_maxrdreqsz;
 94 module_param(limit_maxrdreqsz, bool, 0644);
 95 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
 96 
 97 LIST_HEAD(nes_adapter_list);
 98 static LIST_HEAD(nes_dev_list);
 99 
100 atomic_t qps_destroyed;
101 
102 static unsigned int ee_flsh_adapter;
103 static unsigned int sysfs_nonidx_addr;
104 static unsigned int sysfs_idx_addr;
105 
106 static struct pci_device_id nes_pci_table[] = {
107         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
108         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
109         {0}
110 };
111 
112 MODULE_DEVICE_TABLE(pci, nes_pci_table);
113 
114 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
115 static int nes_net_event(struct notifier_block *, unsigned long, void *);
116 static int nes_notifiers_registered;
117 
118 
119 static struct notifier_block nes_inetaddr_notifier = {
120         .notifier_call = nes_inetaddr_event
121 };
122 
123 static struct notifier_block nes_net_notifier = {
124         .notifier_call = nes_net_event
125 };
126 
127 /**
128  * nes_inetaddr_event
129  */
130 static int nes_inetaddr_event(struct notifier_block *notifier,
131                 unsigned long event, void *ptr)
132 {
133         struct in_ifaddr *ifa = ptr;
134         struct net_device *event_netdev = ifa->ifa_dev->dev;
135         struct nes_device *nesdev;
136         struct net_device *netdev;
137         struct net_device *upper_dev;
138         struct nes_vnic *nesvnic;
139         unsigned int is_bonded;
140 
141         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
142                   &ifa->ifa_address, &ifa->ifa_mask);
143         list_for_each_entry(nesdev, &nes_dev_list, list) {
144                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
145                                 nesdev, nesdev->netdev[0]->name);
146                 netdev = nesdev->netdev[0];
147                 nesvnic = netdev_priv(netdev);
148                 upper_dev = netdev_master_upper_dev_get(netdev);
149                 is_bonded = netif_is_bond_slave(netdev) &&
150                             (upper_dev == event_netdev);
151                 if ((netdev == event_netdev) || is_bonded) {
152                         if (nesvnic->rdma_enabled == 0) {
153                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
154                                                 " RDMA is not enabled.\n",
155                                                 netdev->name);
156                                 return NOTIFY_OK;
157                         }
158                         /* we have ifa->ifa_address/mask here if we need it */
159                         switch (event) {
160                                 case NETDEV_DOWN:
161                                         nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
162                                         nes_write_indexed(nesdev,
163                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
164 
165                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
166                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
167                                         nesvnic->local_ipaddr = 0;
168                                         if (is_bonded)
169                                                 continue;
170                                         else
171                                                 return NOTIFY_OK;
172                                         break;
173                                 case NETDEV_UP:
174                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
175 
176                                         if (nesvnic->local_ipaddr != 0) {
177                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
178                                                 return NOTIFY_OK;
179                                         }
180                                         /* fall through */
181                                 case NETDEV_CHANGEADDR:
182                                         /* Add the address to the IP table */
183                                         if (upper_dev)
184                                                 nesvnic->local_ipaddr =
185                                                         ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address;
186                                         else
187                                                 nesvnic->local_ipaddr = ifa->ifa_address;
188 
189                                         nes_write_indexed(nesdev,
190                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
191                                                         ntohl(nesvnic->local_ipaddr));
192                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
193                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
194                                         if (is_bonded)
195                                                 continue;
196                                         else
197                                                 return NOTIFY_OK;
198                                         break;
199                                 default:
200                                         break;
201                         }
202                 }
203         }
204 
205         return NOTIFY_DONE;
206 }
207 
208 
209 /**
210  * nes_net_event
211  */
212 static int nes_net_event(struct notifier_block *notifier,
213                 unsigned long event, void *ptr)
214 {
215         struct neighbour *neigh = ptr;
216         struct nes_device *nesdev;
217         struct net_device *netdev;
218         struct nes_vnic *nesvnic;
219 
220         switch (event) {
221                 case NETEVENT_NEIGH_UPDATE:
222                         list_for_each_entry(nesdev, &nes_dev_list, list) {
223                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
224                                 netdev = nesdev->netdev[0];
225                                 nesvnic = netdev_priv(netdev);
226                                 if (netdev == neigh->dev) {
227                                         if (nesvnic->rdma_enabled == 0) {
228                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
229                                                                 netdev->name);
230                                         } else {
231                                                 if (neigh->nud_state & NUD_VALID) {
232                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
233                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
234                                                 } else {
235                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
236                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
237                                                 }
238                                         }
239                                         return NOTIFY_OK;
240                                 }
241                         }
242                         break;
243                 default:
244                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
245                         break;
246         }
247 
248         return NOTIFY_DONE;
249 }
250 
251 
252 /**
253  * nes_add_ref
254  */
255 void nes_add_ref(struct ib_qp *ibqp)
256 {
257         struct nes_qp *nesqp;
258 
259         nesqp = to_nesqp(ibqp);
260         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
261                         ibqp->qp_num, atomic_read(&nesqp->refcount));
262         atomic_inc(&nesqp->refcount);
263 }
264 
265 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
266 {
267         unsigned long flags;
268         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
269         struct nes_adapter *nesadapter = nesdev->nesadapter;
270 
271         atomic_inc(&qps_destroyed);
272 
273         /* Free the control structures */
274 
275         if (nesqp->pbl_vbase) {
276                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
277                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
278                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
279                 nesadapter->free_256pbl++;
280                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
281                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
282                 nesqp->pbl_vbase = NULL;
283 
284         } else {
285                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
286                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
287         }
288         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
289 
290         nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
291         kfree(nesqp->allocated_buffer);
292 
293 }
294 
295 /**
296  * nes_rem_ref
297  */
298 void nes_rem_ref(struct ib_qp *ibqp)
299 {
300         u64 u64temp;
301         struct nes_qp *nesqp;
302         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
303         struct nes_device *nesdev = nesvnic->nesdev;
304         struct nes_hw_cqp_wqe *cqp_wqe;
305         struct nes_cqp_request *cqp_request;
306         u32 opcode;
307 
308         nesqp = to_nesqp(ibqp);
309 
310         if (atomic_read(&nesqp->refcount) == 0) {
311                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
312                                 __func__, ibqp->qp_num, nesqp->last_aeq);
313                 BUG();
314         }
315 
316         if (atomic_dec_and_test(&nesqp->refcount)) {
317                 if (nesqp->pau_mode)
318                         nes_destroy_pau_qp(nesdev, nesqp);
319 
320                 /* Destroy the QP */
321                 cqp_request = nes_get_cqp_request(nesdev);
322                 if (cqp_request == NULL) {
323                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
324                         return;
325                 }
326                 cqp_request->waiting = 0;
327                 cqp_request->callback = 1;
328                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
329                 cqp_request->cqp_callback_pointer = nesqp;
330                 cqp_wqe = &cqp_request->cqp_wqe;
331 
332                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
333                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
334 
335                 if (nesqp->hte_added) {
336                         opcode  |= NES_CQP_QP_DEL_HTE;
337                         nesqp->hte_added = 0;
338                 }
339                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
340                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
341                 u64temp = (u64)nesqp->nesqp_context_pbase;
342                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
343                 nes_post_cqp_request(nesdev, cqp_request);
344         }
345 }
346 
347 
348 /**
349  * nes_get_qp
350  */
351 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
352 {
353         struct nes_vnic *nesvnic = to_nesvnic(device);
354         struct nes_device *nesdev = nesvnic->nesdev;
355         struct nes_adapter *nesadapter = nesdev->nesadapter;
356 
357         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
358                 return NULL;
359 
360         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
361 }
362 
363 
364 /**
365  * nes_print_macaddr
366  */
367 static void nes_print_macaddr(struct net_device *netdev)
368 {
369         nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
370                   netdev->name, netdev->dev_addr, netdev->irq);
371 }
372 
373 /**
374  * nes_interrupt - handle interrupts
375  */
376 static irqreturn_t nes_interrupt(int irq, void *dev_id)
377 {
378         struct nes_device *nesdev = (struct nes_device *)dev_id;
379         int handled = 0;
380         u32 int_mask;
381         u32 int_req;
382         u32 int_stat;
383         u32 intf_int_stat;
384         u32 timer_stat;
385 
386         if (nesdev->msi_enabled) {
387                 /* No need to read the interrupt pending register if msi is enabled */
388                 handled = 1;
389         } else {
390                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
391                         /* Master interrupt enable provides synchronization for kicking off bottom half
392                           when interrupt sharing is going on */
393                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
394                         if (int_mask & 0x80000000) {
395                                 /* Check interrupt status to see if this might be ours */
396                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
397                                 int_req = nesdev->int_req;
398                                 if (int_stat&int_req) {
399                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
400                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
401                                                 handled = 1;
402                                         } else {
403                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
404                                                         /* Timer might be running but might be for another function */
405                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
406                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
407                                                                 handled = 1;
408                                                         }
409                                                 }
410                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
411                                                                 (handled == 0)) {
412                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
413                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
414                                                                 handled = 1;
415                                                         }
416                                                 }
417                                         }
418                                         if (handled) {
419                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
420                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
421                                                 /* Save off the status to save an additional read */
422                                                 nesdev->int_stat = int_stat;
423                                                 nesdev->napi_isr_ran = 1;
424                                         }
425                                 }
426                         }
427                 } else {
428                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
429                 }
430         }
431 
432         if (handled) {
433 
434                 if (nes_napi_isr(nesdev) == 0) {
435                         tasklet_schedule(&nesdev->dpc_tasklet);
436 
437                 }
438                 return IRQ_HANDLED;
439         } else {
440                 return IRQ_NONE;
441         }
442 }
443 
444 
445 /**
446  * nes_probe - Device initialization
447  */
448 static int nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
449 {
450         struct net_device *netdev = NULL;
451         struct nes_device *nesdev = NULL;
452         int ret = 0;
453         void __iomem *mmio_regs = NULL;
454         u8 hw_rev;
455 
456         assert(pcidev != NULL);
457         assert(ent != NULL);
458 
459         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
460                         DRV_VERSION, pci_name(pcidev));
461 
462         ret = pci_enable_device(pcidev);
463         if (ret) {
464                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
465                 goto bail0;
466         }
467 
468         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
469                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
470                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
471         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
472                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
473                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
474 
475         /* Make sure PCI base addr are MMIO */
476         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
477                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
478                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
479                 ret = -ENODEV;
480                 goto bail1;
481         }
482 
483         /* Reserve PCI I/O and memory resources */
484         ret = pci_request_regions(pcidev, DRV_NAME);
485         if (ret) {
486                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
487                 goto bail1;
488         }
489 
490         if ((sizeof(dma_addr_t) > 4)) {
491                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
492                 if (ret < 0) {
493                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
494                         goto bail2;
495                 }
496                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
497                 if (ret) {
498                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
499                         goto bail2;
500                 }
501         } else {
502                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
503                 if (ret < 0) {
504                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
505                         goto bail2;
506                 }
507                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
508                 if (ret) {
509                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
510                         goto bail2;
511                 }
512         }
513 
514         pci_set_master(pcidev);
515 
516         /* Allocate hardware structure */
517         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
518         if (!nesdev) {
519                 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
520                 ret = -ENOMEM;
521                 goto bail2;
522         }
523 
524         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
525         nesdev->pcidev = pcidev;
526         pci_set_drvdata(pcidev, nesdev);
527 
528         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
529         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
530 
531         spin_lock_init(&nesdev->indexed_regs_lock);
532 
533         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
534         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
535                                     pci_resource_len(pcidev, BAR_0));
536         if (mmio_regs == NULL) {
537                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
538                 ret = -EIO;
539                 goto bail3;
540         }
541         nesdev->regs = mmio_regs;
542         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
543 
544         /* Ensure interrupts are disabled */
545         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
546 
547         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
548                 if (!pci_enable_msi(nesdev->pcidev)) {
549                         nesdev->msi_enabled = 1;
550                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
551                                         pci_name(pcidev));
552                 } else {
553                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
554                                         pci_name(pcidev));
555                 }
556         } else {
557                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
558                                 pci_name(pcidev));
559         }
560 
561         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
562         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
563 
564         /* Init the adapter */
565         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
566         if (!nesdev->nesadapter) {
567                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
568                 ret = -ENOMEM;
569                 goto bail5;
570         }
571         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
572         nesdev->nesadapter->wqm_quanta = wqm_quanta;
573 
574         /* nesdev->base_doorbell_index =
575                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
576         nesdev->base_doorbell_index = 1;
577         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
578         if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
579                 switch (PCI_FUNC(nesdev->pcidev->devfn) %
580                         nesdev->nesadapter->port_count) {
581                 case 1:
582                         nesdev->mac_index = 2;
583                         break;
584                 case 2:
585                         nesdev->mac_index = 1;
586                         break;
587                 case 3:
588                         nesdev->mac_index = 3;
589                         break;
590                 case 0:
591                 default:
592                         nesdev->mac_index = 0;
593                 }
594         } else {
595                 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
596                                                 nesdev->nesadapter->port_count;
597         }
598 
599         if ((limit_maxrdreqsz ||
600              ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
601               (hw_rev == NE020_REV1))) &&
602             (pcie_get_readrq(pcidev) > 256)) {
603                 if (pcie_set_readrq(pcidev, 256))
604                         printk(KERN_ERR PFX "Unable to set max read request"
605                                 " to 256 bytes\n");
606                 else
607                         nes_debug(NES_DBG_INIT, "Max read request size set"
608                                 " to 256 bytes\n");
609         }
610 
611         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
612 
613         /* bring up the Control QP */
614         if (nes_init_cqp(nesdev)) {
615                 ret = -ENODEV;
616                 goto bail6;
617         }
618 
619         /* Arm the CCQ */
620         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
621                         PCI_FUNC(nesdev->pcidev->devfn));
622         nes_read32(nesdev->regs+NES_CQE_ALLOC);
623 
624         /* Enable the interrupts */
625         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
626                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
627         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
628                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
629         }
630 
631         /* TODO: This really should be the first driver to load, not function 0 */
632         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
633                 /* pick up PCI and critical errors if the first driver to load */
634                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
635                 nesdev->int_req |= NES_INT_INTF;
636         } else {
637                 nesdev->intf_int_req = 0;
638         }
639         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
640         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
641         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
642         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
643         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
644 
645         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
646 
647         /* deal with both periodic and one_shot */
648         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
649         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
650         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
651                         PCI_FUNC(nesdev->pcidev->devfn),
652                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
653 
654         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
655 
656         list_add_tail(&nesdev->list, &nes_dev_list);
657 
658         /* Request an interrupt line for the driver */
659         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
660         if (ret) {
661                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
662                                 pci_name(pcidev), pcidev->irq);
663                 goto bail65;
664         }
665 
666         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
667 
668         if (nes_notifiers_registered == 0) {
669                 register_inetaddr_notifier(&nes_inetaddr_notifier);
670                 register_netevent_notifier(&nes_net_notifier);
671         }
672         nes_notifiers_registered++;
673 
674         INIT_DELAYED_WORK(&nesdev->work, nes_recheck_link_status);
675 
676         /* Initialize network devices */
677         netdev = nes_netdev_init(nesdev, mmio_regs);
678         if (netdev == NULL) {
679                 ret = -ENOMEM;
680                 goto bail7;
681         }
682 
683         /* Register network device */
684         ret = register_netdev(netdev);
685         if (ret) {
686                 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
687                 nes_netdev_destroy(netdev);
688                 goto bail7;
689         }
690 
691         nes_print_macaddr(netdev);
692 
693         nesdev->netdev_count++;
694         nesdev->nesadapter->netdev_count++;
695 
696         printk(KERN_INFO PFX "%s: NetEffect RNIC driver successfully loaded.\n",
697                         pci_name(pcidev));
698         return 0;
699 
700         bail7:
701         printk(KERN_ERR PFX "bail7\n");
702         while (nesdev->netdev_count > 0) {
703                 nesdev->netdev_count--;
704                 nesdev->nesadapter->netdev_count--;
705 
706                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
707                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
708         }
709 
710         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
711                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
712 
713         nes_notifiers_registered--;
714         if (nes_notifiers_registered == 0) {
715                 unregister_netevent_notifier(&nes_net_notifier);
716                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
717         }
718 
719         list_del(&nesdev->list);
720         nes_destroy_cqp(nesdev);
721 
722         bail65:
723         printk(KERN_ERR PFX "bail65\n");
724         free_irq(pcidev->irq, nesdev);
725         if (nesdev->msi_enabled) {
726                 pci_disable_msi(pcidev);
727         }
728         bail6:
729         printk(KERN_ERR PFX "bail6\n");
730         tasklet_kill(&nesdev->dpc_tasklet);
731         /* Deallocate the Adapter Structure */
732         nes_destroy_adapter(nesdev->nesadapter);
733 
734         bail5:
735         printk(KERN_ERR PFX "bail5\n");
736         iounmap(nesdev->regs);
737 
738         bail3:
739         printk(KERN_ERR PFX "bail3\n");
740         kfree(nesdev);
741 
742         bail2:
743         pci_release_regions(pcidev);
744 
745         bail1:
746         pci_disable_device(pcidev);
747 
748         bail0:
749         return ret;
750 }
751 
752 
753 /**
754  * nes_remove - unload from kernel
755  */
756 static void nes_remove(struct pci_dev *pcidev)
757 {
758         struct nes_device *nesdev = pci_get_drvdata(pcidev);
759         struct net_device *netdev;
760         int netdev_index = 0;
761         unsigned long flags;
762 
763                 if (nesdev->netdev_count) {
764                         netdev = nesdev->netdev[netdev_index];
765                         if (netdev) {
766                                 netif_stop_queue(netdev);
767                                 unregister_netdev(netdev);
768                                 nes_netdev_destroy(netdev);
769 
770                                 nesdev->netdev[netdev_index] = NULL;
771                                 nesdev->netdev_count--;
772                                 nesdev->nesadapter->netdev_count--;
773                         }
774                 }
775 
776         nes_notifiers_registered--;
777         if (nes_notifiers_registered == 0) {
778                 unregister_netevent_notifier(&nes_net_notifier);
779                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
780         }
781 
782         list_del(&nesdev->list);
783         nes_destroy_cqp(nesdev);
784 
785         free_irq(pcidev->irq, nesdev);
786         tasklet_kill(&nesdev->dpc_tasklet);
787 
788         spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
789         if (nesdev->link_recheck) {
790                 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
791                 cancel_delayed_work_sync(&nesdev->work);
792         } else {
793                 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
794         }
795 
796         /* Deallocate the Adapter Structure */
797         nes_destroy_adapter(nesdev->nesadapter);
798 
799         if (nesdev->msi_enabled) {
800                 pci_disable_msi(pcidev);
801         }
802 
803         iounmap(nesdev->regs);
804         kfree(nesdev);
805 
806         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
807         pci_release_regions(pcidev);
808         pci_disable_device(pcidev);
809         pci_set_drvdata(pcidev, NULL);
810 }
811 
812 
813 static struct pci_driver nes_pci_driver = {
814         .name = DRV_NAME,
815         .id_table = nes_pci_table,
816         .probe = nes_probe,
817         .remove = nes_remove,
818 };
819 
820 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
821 {
822         unsigned int  devfn = 0xffffffff;
823         unsigned char bus_number = 0xff;
824         unsigned int  i = 0;
825         struct nes_device *nesdev;
826 
827         list_for_each_entry(nesdev, &nes_dev_list, list) {
828                 if (i == ee_flsh_adapter) {
829                         devfn = nesdev->pcidev->devfn;
830                         bus_number = nesdev->pcidev->bus->number;
831                         break;
832                 }
833                 i++;
834         }
835 
836         return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
837 }
838 
839 static ssize_t nes_store_adapter(struct device_driver *ddp,
840         const char *buf, size_t count)
841 {
842         char *p = (char *)buf;
843 
844         ee_flsh_adapter = simple_strtoul(p, &p, 10);
845         return strnlen(buf, count);
846 }
847 
848 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
849 {
850         u32 eeprom_cmd = 0xdead;
851         u32 i = 0;
852         struct nes_device *nesdev;
853 
854         list_for_each_entry(nesdev, &nes_dev_list, list) {
855                 if (i == ee_flsh_adapter) {
856                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
857                         break;
858                 }
859                 i++;
860         }
861         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
862 }
863 
864 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
865         const char *buf, size_t count)
866 {
867         char *p = (char *)buf;
868         u32 val;
869         u32 i = 0;
870         struct nes_device *nesdev;
871 
872         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
873                 val = simple_strtoul(p, &p, 16);
874                 list_for_each_entry(nesdev, &nes_dev_list, list) {
875                         if (i == ee_flsh_adapter) {
876                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
877                                 break;
878                         }
879                         i++;
880                 }
881         }
882         return strnlen(buf, count);
883 }
884 
885 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
886 {
887         u32 eeprom_data = 0xdead;
888         u32 i = 0;
889         struct nes_device *nesdev;
890 
891         list_for_each_entry(nesdev, &nes_dev_list, list) {
892                 if (i == ee_flsh_adapter) {
893                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
894                         break;
895                 }
896                 i++;
897         }
898 
899         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
900 }
901 
902 static ssize_t nes_store_ee_data(struct device_driver *ddp,
903         const char *buf, size_t count)
904 {
905         char *p = (char *)buf;
906         u32 val;
907         u32 i = 0;
908         struct nes_device *nesdev;
909 
910         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
911                 val = simple_strtoul(p, &p, 16);
912                 list_for_each_entry(nesdev, &nes_dev_list, list) {
913                         if (i == ee_flsh_adapter) {
914                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
915                                 break;
916                         }
917                         i++;
918                 }
919         }
920         return strnlen(buf, count);
921 }
922 
923 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
924 {
925         u32 flash_cmd = 0xdead;
926         u32 i = 0;
927         struct nes_device *nesdev;
928 
929         list_for_each_entry(nesdev, &nes_dev_list, list) {
930                 if (i == ee_flsh_adapter) {
931                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
932                         break;
933                 }
934                 i++;
935         }
936 
937         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
938 }
939 
940 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
941         const char *buf, size_t count)
942 {
943         char *p = (char *)buf;
944         u32 val;
945         u32 i = 0;
946         struct nes_device *nesdev;
947 
948         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
949                 val = simple_strtoul(p, &p, 16);
950                 list_for_each_entry(nesdev, &nes_dev_list, list) {
951                         if (i == ee_flsh_adapter) {
952                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
953                                 break;
954                         }
955                         i++;
956                 }
957         }
958         return strnlen(buf, count);
959 }
960 
961 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
962 {
963         u32 flash_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                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
970                         break;
971                 }
972                 i++;
973         }
974 
975         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
976 }
977 
978 static ssize_t nes_store_flash_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 + NES_FLASH_DATA, val);
991                                 break;
992                         }
993                         i++;
994                 }
995         }
996         return strnlen(buf, count);
997 }
998 
999 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
1000 {
1001         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
1002 }
1003 
1004 static ssize_t nes_store_nonidx_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_nonidx_addr = simple_strtoul(p, &p, 16);
1011 
1012         return strnlen(buf, count);
1013 }
1014 
1015 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
1016 {
1017         u32 nonidx_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                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
1024                         break;
1025                 }
1026                 i++;
1027         }
1028 
1029         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1030 }
1031 
1032 static ssize_t nes_store_nonidx_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_write32(nesdev->regs + sysfs_nonidx_addr, val);
1045                                 break;
1046                         }
1047                         i++;
1048                 }
1049         }
1050         return strnlen(buf, count);
1051 }
1052 
1053 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1054 {
1055         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1056 }
1057 
1058 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1059         const char *buf, size_t count)
1060 {
1061         char *p = (char *)buf;
1062 
1063         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1064                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1065 
1066         return strnlen(buf, count);
1067 }
1068 
1069 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1070 {
1071         u32 idx_data = 0xdead;
1072         u32 i = 0;
1073         struct nes_device *nesdev;
1074 
1075         list_for_each_entry(nesdev, &nes_dev_list, list) {
1076                 if (i == ee_flsh_adapter) {
1077                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1078                         break;
1079                 }
1080                 i++;
1081         }
1082 
1083         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1084 }
1085 
1086 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1087         const char *buf, size_t count)
1088 {
1089         char *p = (char *)buf;
1090         u32 val;
1091         u32 i = 0;
1092         struct nes_device *nesdev;
1093 
1094         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1095                 val = simple_strtoul(p, &p, 16);
1096                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1097                         if (i == ee_flsh_adapter) {
1098                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1099                                 break;
1100                         }
1101                         i++;
1102                 }
1103         }
1104         return strnlen(buf, count);
1105 }
1106 
1107 
1108 /**
1109  * nes_show_wqm_quanta
1110  */
1111 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1112 {
1113         u32 wqm_quanta_value = 0xdead;
1114         u32 i = 0;
1115         struct nes_device *nesdev;
1116 
1117         list_for_each_entry(nesdev, &nes_dev_list, list) {
1118                 if (i == ee_flsh_adapter) {
1119                         wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1120                         break;
1121                 }
1122                 i++;
1123         }
1124 
1125         return  snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta_value);
1126 }
1127 
1128 
1129 /**
1130  * nes_store_wqm_quanta
1131  */
1132 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1133                                         const char *buf, size_t count)
1134 {
1135         unsigned long wqm_quanta_value;
1136         u32 wqm_config1;
1137         u32 i = 0;
1138         struct nes_device *nesdev;
1139 
1140         if (kstrtoul(buf, 0, &wqm_quanta_value) < 0)
1141                 return -EINVAL;
1142 
1143         list_for_each_entry(nesdev, &nes_dev_list, list) {
1144                 if (i == ee_flsh_adapter) {
1145                         nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1146                         wqm_config1 = nes_read_indexed(nesdev,
1147                                                 NES_IDX_WQM_CONFIG1);
1148                         nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1149                                         ((wqm_quanta_value << 1) |
1150                                         (wqm_config1 & 0x00000001)));
1151                         break;
1152                 }
1153                 i++;
1154         }
1155         return strnlen(buf, count);
1156 }
1157 
1158 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1159                    nes_show_adapter, nes_store_adapter);
1160 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1161                    nes_show_ee_cmd, nes_store_ee_cmd);
1162 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1163                    nes_show_ee_data, nes_store_ee_data);
1164 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1165                    nes_show_flash_cmd, nes_store_flash_cmd);
1166 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1167                    nes_show_flash_data, nes_store_flash_data);
1168 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1169                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1170 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1171                    nes_show_nonidx_data, nes_store_nonidx_data);
1172 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1173                    nes_show_idx_addr, nes_store_idx_addr);
1174 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1175                    nes_show_idx_data, nes_store_idx_data);
1176 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1177                    nes_show_wqm_quanta, nes_store_wqm_quanta);
1178 
1179 static int nes_create_driver_sysfs(struct pci_driver *drv)
1180 {
1181         int error;
1182         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1183         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1184         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1185         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1186         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1187         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1188         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1189         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1190         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1191         error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1192         return error;
1193 }
1194 
1195 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1196 {
1197         driver_remove_file(&drv->driver, &driver_attr_adapter);
1198         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1199         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1200         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1201         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1202         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1203         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1204         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1205         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1206         driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1207 }
1208 
1209 /**
1210  * nes_init_module - module initialization entry point
1211  */
1212 static int __init nes_init_module(void)
1213 {
1214         int retval;
1215         int retval1;
1216 
1217         retval = nes_cm_start();
1218         if (retval) {
1219                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1220                 return retval;
1221         }
1222         retval = pci_register_driver(&nes_pci_driver);
1223         if (retval >= 0) {
1224                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1225                 if (retval1 < 0)
1226                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1227         }
1228         return retval;
1229 }
1230 
1231 
1232 /**
1233  * nes_exit_module - module unload entry point
1234  */
1235 static void __exit nes_exit_module(void)
1236 {
1237         nes_cm_stop();
1238         nes_remove_driver_sysfs(&nes_pci_driver);
1239 
1240         pci_unregister_driver(&nes_pci_driver);
1241 }
1242 
1243 
1244 module_init(nes_init_module);
1245 module_exit(nes_exit_module);
1246 

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