Version:  2.0.40 2.2.26 2.4.37 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 4.7 4.8 4.9 4.10

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 interrupt_mod_interval = 0;
 69 
 70 /* Interoperability */
 71 int mpa_version = 1;
 72 module_param(mpa_version, int, 0644);
 73 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
 74 
 75 /* Interoperability */
 76 int disable_mpa_crc = 0;
 77 module_param(disable_mpa_crc, int, 0644);
 78 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
 79 
 80 unsigned int nes_drv_opt = NES_DRV_OPT_DISABLE_INT_MOD | NES_DRV_OPT_ENABLE_PAU;
 81 module_param(nes_drv_opt, int, 0644);
 82 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
 83 
 84 unsigned int nes_debug_level = 0;
 85 module_param_named(debug_level, nes_debug_level, uint, 0644);
 86 MODULE_PARM_DESC(debug_level, "Enable debug output level");
 87 
 88 unsigned int wqm_quanta = 0x10000;
 89 module_param(wqm_quanta, int, 0644);
 90 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
 91 
 92 static bool limit_maxrdreqsz;
 93 module_param(limit_maxrdreqsz, bool, 0644);
 94 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
 95 
 96 LIST_HEAD(nes_adapter_list);
 97 static LIST_HEAD(nes_dev_list);
 98 
 99 atomic_t qps_destroyed;
100 
101 static unsigned int ee_flsh_adapter;
102 static unsigned int sysfs_nonidx_addr;
103 static unsigned int sysfs_idx_addr;
104 
105 static struct pci_device_id nes_pci_table[] = {
106         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
107         { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
108         {0}
109 };
110 
111 MODULE_DEVICE_TABLE(pci, nes_pci_table);
112 
113 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
114 static int nes_net_event(struct notifier_block *, unsigned long, void *);
115 static int nes_notifiers_registered;
116 
117 
118 static struct notifier_block nes_inetaddr_notifier = {
119         .notifier_call = nes_inetaddr_event
120 };
121 
122 static struct notifier_block nes_net_notifier = {
123         .notifier_call = nes_net_event
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 net_device *upper_dev;
137         struct nes_vnic *nesvnic;
138         unsigned int is_bonded;
139 
140         nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
141                   &ifa->ifa_address, &ifa->ifa_mask);
142         list_for_each_entry(nesdev, &nes_dev_list, list) {
143                 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
144                                 nesdev, nesdev->netdev[0]->name);
145                 netdev = nesdev->netdev[0];
146                 nesvnic = netdev_priv(netdev);
147                 upper_dev = netdev_master_upper_dev_get(netdev);
148                 is_bonded = netif_is_bond_slave(netdev) &&
149                             (upper_dev == event_netdev);
150                 if ((netdev == event_netdev) || is_bonded) {
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                                         if (is_bonded)
168                                                 continue;
169                                         else
170                                                 return NOTIFY_OK;
171                                         break;
172                                 case NETDEV_UP:
173                                         nes_debug(NES_DBG_NETDEV, "event:UP\n");
174 
175                                         if (nesvnic->local_ipaddr != 0) {
176                                                 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
177                                                 return NOTIFY_OK;
178                                         }
179                                         /* fall through */
180                                 case NETDEV_CHANGEADDR:
181                                         /* Add the address to the IP table */
182                                         if (upper_dev)
183                                                 nesvnic->local_ipaddr =
184                                                         ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address;
185                                         else
186                                                 nesvnic->local_ipaddr = ifa->ifa_address;
187 
188                                         nes_write_indexed(nesdev,
189                                                         NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
190                                                         ntohl(nesvnic->local_ipaddr));
191                                         nes_manage_arp_cache(netdev, netdev->dev_addr,
192                                                         ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
193                                         if (is_bonded)
194                                                 continue;
195                                         else
196                                                 return NOTIFY_OK;
197                                         break;
198                                 default:
199                                         break;
200                         }
201                 }
202         }
203 
204         return NOTIFY_DONE;
205 }
206 
207 
208 /**
209  * nes_net_event
210  */
211 static int nes_net_event(struct notifier_block *notifier,
212                 unsigned long event, void *ptr)
213 {
214         struct neighbour *neigh = ptr;
215         struct nes_device *nesdev;
216         struct net_device *netdev;
217         struct nes_vnic *nesvnic;
218 
219         switch (event) {
220                 case NETEVENT_NEIGH_UPDATE:
221                         list_for_each_entry(nesdev, &nes_dev_list, list) {
222                                 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
223                                 netdev = nesdev->netdev[0];
224                                 nesvnic = netdev_priv(netdev);
225                                 if (netdev == neigh->dev) {
226                                         if (nesvnic->rdma_enabled == 0) {
227                                                 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
228                                                                 netdev->name);
229                                         } else {
230                                                 if (neigh->nud_state & NUD_VALID) {
231                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
232                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
233                                                 } else {
234                                                         nes_manage_arp_cache(neigh->dev, neigh->ha,
235                                                                         ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
236                                                 }
237                                         }
238                                         return NOTIFY_OK;
239                                 }
240                         }
241                         break;
242                 default:
243                         nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
244                         break;
245         }
246 
247         return NOTIFY_DONE;
248 }
249 
250 
251 /**
252  * nes_add_ref
253  */
254 void nes_add_ref(struct ib_qp *ibqp)
255 {
256         struct nes_qp *nesqp;
257 
258         nesqp = to_nesqp(ibqp);
259         nes_debug(NES_DBG_QP, "Bumping refcount for QP%u.  Pre-inc value = %u\n",
260                         ibqp->qp_num, atomic_read(&nesqp->refcount));
261         atomic_inc(&nesqp->refcount);
262 }
263 
264 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
265 {
266         unsigned long flags;
267         struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
268         struct nes_adapter *nesadapter = nesdev->nesadapter;
269 
270         atomic_inc(&qps_destroyed);
271 
272         /* Free the control structures */
273 
274         if (nesqp->pbl_vbase) {
275                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
276                                 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
277                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
278                 nesadapter->free_256pbl++;
279                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
280                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
281                 nesqp->pbl_vbase = NULL;
282 
283         } else {
284                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
285                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
286         }
287         nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
288 
289         nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
290         kfree(nesqp->allocated_buffer);
291 
292 }
293 
294 /**
295  * nes_rem_ref
296  */
297 void nes_rem_ref(struct ib_qp *ibqp)
298 {
299         u64 u64temp;
300         struct nes_qp *nesqp;
301         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
302         struct nes_device *nesdev = nesvnic->nesdev;
303         struct nes_hw_cqp_wqe *cqp_wqe;
304         struct nes_cqp_request *cqp_request;
305         u32 opcode;
306 
307         nesqp = to_nesqp(ibqp);
308 
309         if (atomic_read(&nesqp->refcount) == 0) {
310                 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
311                                 __func__, ibqp->qp_num, nesqp->last_aeq);
312                 BUG();
313         }
314 
315         if (atomic_dec_and_test(&nesqp->refcount)) {
316                 if (nesqp->pau_mode)
317                         nes_destroy_pau_qp(nesdev, nesqp);
318 
319                 /* Destroy the QP */
320                 cqp_request = nes_get_cqp_request(nesdev);
321                 if (cqp_request == NULL) {
322                         nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
323                         return;
324                 }
325                 cqp_request->waiting = 0;
326                 cqp_request->callback = 1;
327                 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
328                 cqp_request->cqp_callback_pointer = nesqp;
329                 cqp_wqe = &cqp_request->cqp_wqe;
330 
331                 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
332                 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
333 
334                 if (nesqp->hte_added) {
335                         opcode  |= NES_CQP_QP_DEL_HTE;
336                         nesqp->hte_added = 0;
337                 }
338                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
339                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
340                 u64temp = (u64)nesqp->nesqp_context_pbase;
341                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
342                 nes_post_cqp_request(nesdev, cqp_request);
343         }
344 }
345 
346 
347 /**
348  * nes_get_qp
349  */
350 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
351 {
352         struct nes_vnic *nesvnic = to_nesvnic(device);
353         struct nes_device *nesdev = nesvnic->nesdev;
354         struct nes_adapter *nesadapter = nesdev->nesadapter;
355 
356         if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
357                 return NULL;
358 
359         return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
360 }
361 
362 
363 /**
364  * nes_print_macaddr
365  */
366 static void nes_print_macaddr(struct net_device *netdev)
367 {
368         nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
369                   netdev->name, netdev->dev_addr, netdev->irq);
370 }
371 
372 /**
373  * nes_interrupt - handle interrupts
374  */
375 static irqreturn_t nes_interrupt(int irq, void *dev_id)
376 {
377         struct nes_device *nesdev = (struct nes_device *)dev_id;
378         int handled = 0;
379         u32 int_mask;
380         u32 int_req;
381         u32 int_stat;
382         u32 intf_int_stat;
383         u32 timer_stat;
384 
385         if (nesdev->msi_enabled) {
386                 /* No need to read the interrupt pending register if msi is enabled */
387                 handled = 1;
388         } else {
389                 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
390                         /* Master interrupt enable provides synchronization for kicking off bottom half
391                           when interrupt sharing is going on */
392                         int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
393                         if (int_mask & 0x80000000) {
394                                 /* Check interrupt status to see if this might be ours */
395                                 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
396                                 int_req = nesdev->int_req;
397                                 if (int_stat&int_req) {
398                                         /* if interesting CEQ or AEQ is pending, claim the interrupt */
399                                         if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
400                                                 handled = 1;
401                                         } else {
402                                                 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
403                                                         /* Timer might be running but might be for another function */
404                                                         timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
405                                                         if ((timer_stat & nesdev->timer_int_req) != 0) {
406                                                                 handled = 1;
407                                                         }
408                                                 }
409                                                 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
410                                                                 (handled == 0)) {
411                                                         intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
412                                                         if ((intf_int_stat & nesdev->intf_int_req) != 0) {
413                                                                 handled = 1;
414                                                         }
415                                                 }
416                                         }
417                                         if (handled) {
418                                                 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
419                                                 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
420                                                 /* Save off the status to save an additional read */
421                                                 nesdev->int_stat = int_stat;
422                                                 nesdev->napi_isr_ran = 1;
423                                         }
424                                 }
425                         }
426                 } else {
427                         handled = nes_read32(nesdev->regs+NES_INT_PENDING);
428                 }
429         }
430 
431         if (handled) {
432 
433                 if (nes_napi_isr(nesdev) == 0) {
434                         tasklet_schedule(&nesdev->dpc_tasklet);
435 
436                 }
437                 return IRQ_HANDLED;
438         } else {
439                 return IRQ_NONE;
440         }
441 }
442 
443 
444 /**
445  * nes_probe - Device initialization
446  */
447 static int nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
448 {
449         struct net_device *netdev = NULL;
450         struct nes_device *nesdev = NULL;
451         int ret = 0;
452         void __iomem *mmio_regs = NULL;
453         u8 hw_rev;
454 
455         assert(pcidev != NULL);
456         assert(ent != NULL);
457 
458         printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
459                         DRV_VERSION, pci_name(pcidev));
460 
461         ret = pci_enable_device(pcidev);
462         if (ret) {
463                 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
464                 goto bail0;
465         }
466 
467         nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
468                         (long unsigned int)pci_resource_start(pcidev, BAR_0),
469                         (long unsigned int)pci_resource_len(pcidev, BAR_0));
470         nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
471                         (long unsigned int)pci_resource_start(pcidev, BAR_1),
472                         (long unsigned int)pci_resource_len(pcidev, BAR_1));
473 
474         /* Make sure PCI base addr are MMIO */
475         if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
476                         !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
477                 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
478                 ret = -ENODEV;
479                 goto bail1;
480         }
481 
482         /* Reserve PCI I/O and memory resources */
483         ret = pci_request_regions(pcidev, DRV_NAME);
484         if (ret) {
485                 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
486                 goto bail1;
487         }
488 
489         if ((sizeof(dma_addr_t) > 4)) {
490                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
491                 if (ret < 0) {
492                         printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
493                         goto bail2;
494                 }
495                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
496                 if (ret) {
497                         printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
498                         goto bail2;
499                 }
500         } else {
501                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
502                 if (ret < 0) {
503                         printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
504                         goto bail2;
505                 }
506                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
507                 if (ret) {
508                         printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
509                         goto bail2;
510                 }
511         }
512 
513         pci_set_master(pcidev);
514 
515         /* Allocate hardware structure */
516         nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
517         if (!nesdev) {
518                 ret = -ENOMEM;
519                 goto bail2;
520         }
521 
522         nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
523         nesdev->pcidev = pcidev;
524         pci_set_drvdata(pcidev, nesdev);
525 
526         pci_read_config_byte(pcidev, 0x0008, &hw_rev);
527         nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
528 
529         spin_lock_init(&nesdev->indexed_regs_lock);
530 
531         /* Remap the PCI registers in adapter BAR0 to kernel VA space */
532         mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
533                                     pci_resource_len(pcidev, BAR_0));
534         if (mmio_regs == NULL) {
535                 printk(KERN_ERR PFX "Unable to remap BAR0\n");
536                 ret = -EIO;
537                 goto bail3;
538         }
539         nesdev->regs = mmio_regs;
540         nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
541 
542         /* Ensure interrupts are disabled */
543         nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
544 
545         if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
546                 if (!pci_enable_msi(nesdev->pcidev)) {
547                         nesdev->msi_enabled = 1;
548                         nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
549                                         pci_name(pcidev));
550                 } else {
551                         nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
552                                         pci_name(pcidev));
553                 }
554         } else {
555                 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
556                                 pci_name(pcidev));
557         }
558 
559         nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
560         nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
561 
562         /* Init the adapter */
563         nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
564         if (!nesdev->nesadapter) {
565                 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
566                 ret = -ENOMEM;
567                 goto bail5;
568         }
569         nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
570         nesdev->nesadapter->wqm_quanta = wqm_quanta;
571 
572         /* nesdev->base_doorbell_index =
573                         nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
574         nesdev->base_doorbell_index = 1;
575         nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
576         if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
577                 switch (PCI_FUNC(nesdev->pcidev->devfn) %
578                         nesdev->nesadapter->port_count) {
579                 case 1:
580                         nesdev->mac_index = 2;
581                         break;
582                 case 2:
583                         nesdev->mac_index = 1;
584                         break;
585                 case 3:
586                         nesdev->mac_index = 3;
587                         break;
588                 case 0:
589                 default:
590                         nesdev->mac_index = 0;
591                 }
592         } else {
593                 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
594                                                 nesdev->nesadapter->port_count;
595         }
596 
597         if ((limit_maxrdreqsz ||
598              ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
599               (hw_rev == NE020_REV1))) &&
600             (pcie_get_readrq(pcidev) > 256)) {
601                 if (pcie_set_readrq(pcidev, 256))
602                         printk(KERN_ERR PFX "Unable to set max read request"
603                                 " to 256 bytes\n");
604                 else
605                         nes_debug(NES_DBG_INIT, "Max read request size set"
606                                 " to 256 bytes\n");
607         }
608 
609         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
610 
611         /* bring up the Control QP */
612         if (nes_init_cqp(nesdev)) {
613                 ret = -ENODEV;
614                 goto bail6;
615         }
616 
617         /* Arm the CCQ */
618         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
619                         PCI_FUNC(nesdev->pcidev->devfn));
620         nes_read32(nesdev->regs+NES_CQE_ALLOC);
621 
622         /* Enable the interrupts */
623         nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
624                         (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
625         if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
626                 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
627         }
628 
629         /* TODO: This really should be the first driver to load, not function 0 */
630         if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
631                 /* pick up PCI and critical errors if the first driver to load */
632                 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
633                 nesdev->int_req |= NES_INT_INTF;
634         } else {
635                 nesdev->intf_int_req = 0;
636         }
637         nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
638         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
639         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
640         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
641         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
642 
643         nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
644 
645         /* deal with both periodic and one_shot */
646         nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
647         nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
648         nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
649                         PCI_FUNC(nesdev->pcidev->devfn),
650                         nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
651 
652         nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
653 
654         list_add_tail(&nesdev->list, &nes_dev_list);
655 
656         /* Request an interrupt line for the driver */
657         ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
658         if (ret) {
659                 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
660                                 pci_name(pcidev), pcidev->irq);
661                 goto bail65;
662         }
663 
664         nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
665 
666         if (nes_notifiers_registered == 0) {
667                 register_inetaddr_notifier(&nes_inetaddr_notifier);
668                 register_netevent_notifier(&nes_net_notifier);
669         }
670         nes_notifiers_registered++;
671 
672         INIT_DELAYED_WORK(&nesdev->work, nes_recheck_link_status);
673 
674         /* Initialize network devices */
675         netdev = nes_netdev_init(nesdev, mmio_regs);
676         if (netdev == NULL) {
677                 ret = -ENOMEM;
678                 goto bail7;
679         }
680 
681         /* Register network device */
682         ret = register_netdev(netdev);
683         if (ret) {
684                 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
685                 nes_netdev_destroy(netdev);
686                 goto bail7;
687         }
688 
689         nes_print_macaddr(netdev);
690 
691         nesdev->netdev_count++;
692         nesdev->nesadapter->netdev_count++;
693 
694         printk(KERN_INFO PFX "%s: NetEffect RNIC driver successfully loaded.\n",
695                         pci_name(pcidev));
696         return 0;
697 
698         bail7:
699         printk(KERN_ERR PFX "bail7\n");
700         while (nesdev->netdev_count > 0) {
701                 nesdev->netdev_count--;
702                 nesdev->nesadapter->netdev_count--;
703 
704                 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
705                 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
706         }
707 
708         nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
709                         nesdev->netdev_count, nesdev->nesadapter->netdev_count);
710 
711         nes_notifiers_registered--;
712         if (nes_notifiers_registered == 0) {
713                 unregister_netevent_notifier(&nes_net_notifier);
714                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
715         }
716 
717         list_del(&nesdev->list);
718         nes_destroy_cqp(nesdev);
719 
720         bail65:
721         printk(KERN_ERR PFX "bail65\n");
722         free_irq(pcidev->irq, nesdev);
723         if (nesdev->msi_enabled) {
724                 pci_disable_msi(pcidev);
725         }
726         bail6:
727         printk(KERN_ERR PFX "bail6\n");
728         tasklet_kill(&nesdev->dpc_tasklet);
729         /* Deallocate the Adapter Structure */
730         nes_destroy_adapter(nesdev->nesadapter);
731 
732         bail5:
733         printk(KERN_ERR PFX "bail5\n");
734         iounmap(nesdev->regs);
735 
736         bail3:
737         printk(KERN_ERR PFX "bail3\n");
738         kfree(nesdev);
739 
740         bail2:
741         pci_release_regions(pcidev);
742 
743         bail1:
744         pci_disable_device(pcidev);
745 
746         bail0:
747         return ret;
748 }
749 
750 
751 /**
752  * nes_remove - unload from kernel
753  */
754 static void nes_remove(struct pci_dev *pcidev)
755 {
756         struct nes_device *nesdev = pci_get_drvdata(pcidev);
757         struct net_device *netdev;
758         int netdev_index = 0;
759         unsigned long flags;
760 
761                 if (nesdev->netdev_count) {
762                         netdev = nesdev->netdev[netdev_index];
763                         if (netdev) {
764                                 netif_stop_queue(netdev);
765                                 unregister_netdev(netdev);
766                                 nes_netdev_destroy(netdev);
767 
768                                 nesdev->netdev[netdev_index] = NULL;
769                                 nesdev->netdev_count--;
770                                 nesdev->nesadapter->netdev_count--;
771                         }
772                 }
773 
774         nes_notifiers_registered--;
775         if (nes_notifiers_registered == 0) {
776                 unregister_netevent_notifier(&nes_net_notifier);
777                 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
778         }
779 
780         list_del(&nesdev->list);
781         nes_destroy_cqp(nesdev);
782 
783         free_irq(pcidev->irq, nesdev);
784         tasklet_kill(&nesdev->dpc_tasklet);
785 
786         spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
787         if (nesdev->link_recheck) {
788                 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
789                 cancel_delayed_work_sync(&nesdev->work);
790         } else {
791                 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
792         }
793 
794         /* Deallocate the Adapter Structure */
795         nes_destroy_adapter(nesdev->nesadapter);
796 
797         if (nesdev->msi_enabled) {
798                 pci_disable_msi(pcidev);
799         }
800 
801         iounmap(nesdev->regs);
802         kfree(nesdev);
803 
804         /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
805         pci_release_regions(pcidev);
806         pci_disable_device(pcidev);
807         pci_set_drvdata(pcidev, NULL);
808 }
809 
810 
811 static struct pci_driver nes_pci_driver = {
812         .name = DRV_NAME,
813         .id_table = nes_pci_table,
814         .probe = nes_probe,
815         .remove = nes_remove,
816 };
817 
818 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
819 {
820         unsigned int  devfn = 0xffffffff;
821         unsigned char bus_number = 0xff;
822         unsigned int  i = 0;
823         struct nes_device *nesdev;
824 
825         list_for_each_entry(nesdev, &nes_dev_list, list) {
826                 if (i == ee_flsh_adapter) {
827                         devfn = nesdev->pcidev->devfn;
828                         bus_number = nesdev->pcidev->bus->number;
829                         break;
830                 }
831                 i++;
832         }
833 
834         return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
835 }
836 
837 static ssize_t nes_store_adapter(struct device_driver *ddp,
838         const char *buf, size_t count)
839 {
840         char *p = (char *)buf;
841 
842         ee_flsh_adapter = simple_strtoul(p, &p, 10);
843         return strnlen(buf, count);
844 }
845 
846 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
847 {
848         u32 eeprom_cmd = 0xdead;
849         u32 i = 0;
850         struct nes_device *nesdev;
851 
852         list_for_each_entry(nesdev, &nes_dev_list, list) {
853                 if (i == ee_flsh_adapter) {
854                         eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
855                         break;
856                 }
857                 i++;
858         }
859         return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
860 }
861 
862 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
863         const char *buf, size_t count)
864 {
865         char *p = (char *)buf;
866         u32 val;
867         u32 i = 0;
868         struct nes_device *nesdev;
869 
870         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
871                 val = simple_strtoul(p, &p, 16);
872                 list_for_each_entry(nesdev, &nes_dev_list, list) {
873                         if (i == ee_flsh_adapter) {
874                                 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
875                                 break;
876                         }
877                         i++;
878                 }
879         }
880         return strnlen(buf, count);
881 }
882 
883 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
884 {
885         u32 eeprom_data = 0xdead;
886         u32 i = 0;
887         struct nes_device *nesdev;
888 
889         list_for_each_entry(nesdev, &nes_dev_list, list) {
890                 if (i == ee_flsh_adapter) {
891                         eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
892                         break;
893                 }
894                 i++;
895         }
896 
897         return  snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
898 }
899 
900 static ssize_t nes_store_ee_data(struct device_driver *ddp,
901         const char *buf, size_t count)
902 {
903         char *p = (char *)buf;
904         u32 val;
905         u32 i = 0;
906         struct nes_device *nesdev;
907 
908         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
909                 val = simple_strtoul(p, &p, 16);
910                 list_for_each_entry(nesdev, &nes_dev_list, list) {
911                         if (i == ee_flsh_adapter) {
912                                 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
913                                 break;
914                         }
915                         i++;
916                 }
917         }
918         return strnlen(buf, count);
919 }
920 
921 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
922 {
923         u32 flash_cmd = 0xdead;
924         u32 i = 0;
925         struct nes_device *nesdev;
926 
927         list_for_each_entry(nesdev, &nes_dev_list, list) {
928                 if (i == ee_flsh_adapter) {
929                         flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
930                         break;
931                 }
932                 i++;
933         }
934 
935         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
936 }
937 
938 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
939         const char *buf, size_t count)
940 {
941         char *p = (char *)buf;
942         u32 val;
943         u32 i = 0;
944         struct nes_device *nesdev;
945 
946         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
947                 val = simple_strtoul(p, &p, 16);
948                 list_for_each_entry(nesdev, &nes_dev_list, list) {
949                         if (i == ee_flsh_adapter) {
950                                 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
951                                 break;
952                         }
953                         i++;
954                 }
955         }
956         return strnlen(buf, count);
957 }
958 
959 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
960 {
961         u32 flash_data = 0xdead;
962         u32 i = 0;
963         struct nes_device *nesdev;
964 
965         list_for_each_entry(nesdev, &nes_dev_list, list) {
966                 if (i == ee_flsh_adapter) {
967                         flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
968                         break;
969                 }
970                 i++;
971         }
972 
973         return  snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
974 }
975 
976 static ssize_t nes_store_flash_data(struct device_driver *ddp,
977         const char *buf, size_t count)
978 {
979         char *p = (char *)buf;
980         u32 val;
981         u32 i = 0;
982         struct nes_device *nesdev;
983 
984         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
985                 val = simple_strtoul(p, &p, 16);
986                 list_for_each_entry(nesdev, &nes_dev_list, list) {
987                         if (i == ee_flsh_adapter) {
988                                 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
989                                 break;
990                         }
991                         i++;
992                 }
993         }
994         return strnlen(buf, count);
995 }
996 
997 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
998 {
999         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
1000 }
1001 
1002 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
1003         const char *buf, size_t count)
1004 {
1005         char *p = (char *)buf;
1006 
1007         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1008                 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
1009 
1010         return strnlen(buf, count);
1011 }
1012 
1013 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
1014 {
1015         u32 nonidx_data = 0xdead;
1016         u32 i = 0;
1017         struct nes_device *nesdev;
1018 
1019         list_for_each_entry(nesdev, &nes_dev_list, list) {
1020                 if (i == ee_flsh_adapter) {
1021                         nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
1022                         break;
1023                 }
1024                 i++;
1025         }
1026 
1027         return  snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1028 }
1029 
1030 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1031         const char *buf, size_t count)
1032 {
1033         char *p = (char *)buf;
1034         u32 val;
1035         u32 i = 0;
1036         struct nes_device *nesdev;
1037 
1038         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1039                 val = simple_strtoul(p, &p, 16);
1040                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1041                         if (i == ee_flsh_adapter) {
1042                                 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1043                                 break;
1044                         }
1045                         i++;
1046                 }
1047         }
1048         return strnlen(buf, count);
1049 }
1050 
1051 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1052 {
1053         return  snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1054 }
1055 
1056 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1057         const char *buf, size_t count)
1058 {
1059         char *p = (char *)buf;
1060 
1061         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1062                 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1063 
1064         return strnlen(buf, count);
1065 }
1066 
1067 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1068 {
1069         u32 idx_data = 0xdead;
1070         u32 i = 0;
1071         struct nes_device *nesdev;
1072 
1073         list_for_each_entry(nesdev, &nes_dev_list, list) {
1074                 if (i == ee_flsh_adapter) {
1075                         idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1076                         break;
1077                 }
1078                 i++;
1079         }
1080 
1081         return  snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1082 }
1083 
1084 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1085         const char *buf, size_t count)
1086 {
1087         char *p = (char *)buf;
1088         u32 val;
1089         u32 i = 0;
1090         struct nes_device *nesdev;
1091 
1092         if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1093                 val = simple_strtoul(p, &p, 16);
1094                 list_for_each_entry(nesdev, &nes_dev_list, list) {
1095                         if (i == ee_flsh_adapter) {
1096                                 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1097                                 break;
1098                         }
1099                         i++;
1100                 }
1101         }
1102         return strnlen(buf, count);
1103 }
1104 
1105 
1106 /**
1107  * nes_show_wqm_quanta
1108  */
1109 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1110 {
1111         u32 wqm_quanta_value = 0xdead;
1112         u32 i = 0;
1113         struct nes_device *nesdev;
1114 
1115         list_for_each_entry(nesdev, &nes_dev_list, list) {
1116                 if (i == ee_flsh_adapter) {
1117                         wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1118                         break;
1119                 }
1120                 i++;
1121         }
1122 
1123         return  snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta_value);
1124 }
1125 
1126 
1127 /**
1128  * nes_store_wqm_quanta
1129  */
1130 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1131                                         const char *buf, size_t count)
1132 {
1133         unsigned long wqm_quanta_value;
1134         u32 wqm_config1;
1135         u32 i = 0;
1136         struct nes_device *nesdev;
1137 
1138         if (kstrtoul(buf, 0, &wqm_quanta_value) < 0)
1139                 return -EINVAL;
1140 
1141         list_for_each_entry(nesdev, &nes_dev_list, list) {
1142                 if (i == ee_flsh_adapter) {
1143                         nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1144                         wqm_config1 = nes_read_indexed(nesdev,
1145                                                 NES_IDX_WQM_CONFIG1);
1146                         nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1147                                         ((wqm_quanta_value << 1) |
1148                                         (wqm_config1 & 0x00000001)));
1149                         break;
1150                 }
1151                 i++;
1152         }
1153         return strnlen(buf, count);
1154 }
1155 
1156 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1157                    nes_show_adapter, nes_store_adapter);
1158 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1159                    nes_show_ee_cmd, nes_store_ee_cmd);
1160 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1161                    nes_show_ee_data, nes_store_ee_data);
1162 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1163                    nes_show_flash_cmd, nes_store_flash_cmd);
1164 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1165                    nes_show_flash_data, nes_store_flash_data);
1166 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1167                    nes_show_nonidx_addr, nes_store_nonidx_addr);
1168 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1169                    nes_show_nonidx_data, nes_store_nonidx_data);
1170 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1171                    nes_show_idx_addr, nes_store_idx_addr);
1172 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1173                    nes_show_idx_data, nes_store_idx_data);
1174 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1175                    nes_show_wqm_quanta, nes_store_wqm_quanta);
1176 
1177 static int nes_create_driver_sysfs(struct pci_driver *drv)
1178 {
1179         int error;
1180         error  = driver_create_file(&drv->driver, &driver_attr_adapter);
1181         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1182         error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1183         error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1184         error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1185         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1186         error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1187         error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1188         error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1189         error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1190         return error;
1191 }
1192 
1193 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1194 {
1195         driver_remove_file(&drv->driver, &driver_attr_adapter);
1196         driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1197         driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1198         driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1199         driver_remove_file(&drv->driver, &driver_attr_flash_data);
1200         driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1201         driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1202         driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1203         driver_remove_file(&drv->driver, &driver_attr_idx_data);
1204         driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1205 }
1206 
1207 /**
1208  * nes_init_module - module initialization entry point
1209  */
1210 static int __init nes_init_module(void)
1211 {
1212         int retval;
1213         int retval1;
1214 
1215         retval = nes_cm_start();
1216         if (retval) {
1217                 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1218                 return retval;
1219         }
1220         retval = pci_register_driver(&nes_pci_driver);
1221         if (retval >= 0) {
1222                 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1223                 if (retval1 < 0)
1224                         printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1225         }
1226         return retval;
1227 }
1228 
1229 
1230 /**
1231  * nes_exit_module - module unload entry point
1232  */
1233 static void __exit nes_exit_module(void)
1234 {
1235         nes_cm_stop();
1236         nes_remove_driver_sysfs(&nes_pci_driver);
1237 
1238         pci_unregister_driver(&nes_pci_driver);
1239 }
1240 
1241 
1242 module_init(nes_init_module);
1243 module_exit(nes_exit_module);
1244 

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