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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
63MODULE_AUTHOR("NetEffect");
64MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
65MODULE_LICENSE("Dual BSD/GPL");
66MODULE_VERSION(DRV_VERSION);
67
68int max_mtu = 9000;
69int interrupt_mod_interval = 0;
70
71
72
73int mpa_version = 1;
74module_param(mpa_version, int, 0644);
75MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
76
77
78int disable_mpa_crc = 0;
79module_param(disable_mpa_crc, int, 0644);
80MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
81
82unsigned int send_first = 0;
83module_param(send_first, int, 0644);
84MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
85
86
87unsigned int nes_drv_opt = 0;
88module_param(nes_drv_opt, int, 0644);
89MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
90
91unsigned int nes_debug_level = 0;
92module_param_named(debug_level, nes_debug_level, uint, 0644);
93MODULE_PARM_DESC(debug_level, "Enable debug output level");
94
95unsigned int wqm_quanta = 0x10000;
96module_param(wqm_quanta, int, 0644);
97MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
98
99static unsigned int limit_maxrdreqsz;
100module_param(limit_maxrdreqsz, bool, 0644);
101MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
102
103LIST_HEAD(nes_adapter_list);
104static LIST_HEAD(nes_dev_list);
105
106atomic_t qps_destroyed;
107
108static unsigned int ee_flsh_adapter;
109static unsigned int sysfs_nonidx_addr;
110static unsigned int sysfs_idx_addr;
111
112static struct pci_device_id nes_pci_table[] = {
113 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
114 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
115 {0}
116};
117
118MODULE_DEVICE_TABLE(pci, nes_pci_table);
119
120static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
121static int nes_net_event(struct notifier_block *, unsigned long, void *);
122static int nes_notifiers_registered;
123
124
125static struct notifier_block nes_inetaddr_notifier = {
126 .notifier_call = nes_inetaddr_event
127};
128
129static struct notifier_block nes_net_notifier = {
130 .notifier_call = nes_net_event
131};
132
133
134
135
136
137
138
139static int nes_inetaddr_event(struct notifier_block *notifier,
140 unsigned long event, void *ptr)
141{
142 struct in_ifaddr *ifa = ptr;
143 struct net_device *event_netdev = ifa->ifa_dev->dev;
144 struct nes_device *nesdev;
145 struct net_device *netdev;
146 struct nes_vnic *nesvnic;
147 unsigned int is_bonded;
148
149 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
150 &ifa->ifa_address, &ifa->ifa_mask);
151 list_for_each_entry(nesdev, &nes_dev_list, list) {
152 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
153 nesdev, nesdev->netdev[0]->name);
154 netdev = nesdev->netdev[0];
155 nesvnic = netdev_priv(netdev);
156 is_bonded = (netdev->master == event_netdev);
157 if ((netdev == event_netdev) || is_bonded) {
158 if (nesvnic->rdma_enabled == 0) {
159 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
160 " RDMA is not enabled.\n",
161 netdev->name);
162 return NOTIFY_OK;
163 }
164
165 switch (event) {
166 case NETDEV_DOWN:
167 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
168 nes_write_indexed(nesdev,
169 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
170
171 nes_manage_arp_cache(netdev, netdev->dev_addr,
172 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
173 nesvnic->local_ipaddr = 0;
174 if (is_bonded)
175 continue;
176 else
177 return NOTIFY_OK;
178 break;
179 case NETDEV_UP:
180 nes_debug(NES_DBG_NETDEV, "event:UP\n");
181
182 if (nesvnic->local_ipaddr != 0) {
183 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
184 return NOTIFY_OK;
185 }
186
187 case NETDEV_CHANGEADDR:
188
189 if (netdev->master)
190 nesvnic->local_ipaddr =
191 ((struct in_device *)netdev->master->ip_ptr)->ifa_list->ifa_address;
192 else
193 nesvnic->local_ipaddr = ifa->ifa_address;
194
195 nes_write_indexed(nesdev,
196 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
197 ntohl(nesvnic->local_ipaddr));
198 nes_manage_arp_cache(netdev, netdev->dev_addr,
199 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
200 if (is_bonded)
201 continue;
202 else
203 return NOTIFY_OK;
204 break;
205 default:
206 break;
207 }
208 }
209 }
210
211 return NOTIFY_DONE;
212}
213
214
215
216
217
218static int nes_net_event(struct notifier_block *notifier,
219 unsigned long event, void *ptr)
220{
221 struct neighbour *neigh = ptr;
222 struct nes_device *nesdev;
223 struct net_device *netdev;
224 struct nes_vnic *nesvnic;
225
226 switch (event) {
227 case NETEVENT_NEIGH_UPDATE:
228 list_for_each_entry(nesdev, &nes_dev_list, list) {
229
230 netdev = nesdev->netdev[0];
231 nesvnic = netdev_priv(netdev);
232 if (netdev == neigh->dev) {
233 if (nesvnic->rdma_enabled == 0) {
234 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
235 netdev->name);
236 } else {
237 if (neigh->nud_state & NUD_VALID) {
238 nes_manage_arp_cache(neigh->dev, neigh->ha,
239 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
240 } else {
241 nes_manage_arp_cache(neigh->dev, neigh->ha,
242 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
243 }
244 }
245 return NOTIFY_OK;
246 }
247 }
248 break;
249 default:
250 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
251 break;
252 }
253
254 return NOTIFY_DONE;
255}
256
257
258
259
260
261void nes_add_ref(struct ib_qp *ibqp)
262{
263 struct nes_qp *nesqp;
264
265 nesqp = to_nesqp(ibqp);
266 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
267 ibqp->qp_num, atomic_read(&nesqp->refcount));
268 atomic_inc(&nesqp->refcount);
269}
270
271static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
272{
273 unsigned long flags;
274 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
275 struct nes_adapter *nesadapter = nesdev->nesadapter;
276
277 atomic_inc(&qps_destroyed);
278
279
280
281 if (nesqp->pbl_vbase) {
282 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
283 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
284 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
285 nesadapter->free_256pbl++;
286 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
287 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
288 nesqp->pbl_vbase = NULL;
289
290 } else {
291 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
292 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
293 }
294 nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
295
296 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
297 kfree(nesqp->allocated_buffer);
298
299}
300
301
302
303
304void nes_rem_ref(struct ib_qp *ibqp)
305{
306 u64 u64temp;
307 struct nes_qp *nesqp;
308 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
309 struct nes_device *nesdev = nesvnic->nesdev;
310 struct nes_hw_cqp_wqe *cqp_wqe;
311 struct nes_cqp_request *cqp_request;
312 u32 opcode;
313
314 nesqp = to_nesqp(ibqp);
315
316 if (atomic_read(&nesqp->refcount) == 0) {
317 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
318 __func__, ibqp->qp_num, nesqp->last_aeq);
319 BUG();
320 }
321
322 if (atomic_dec_and_test(&nesqp->refcount)) {
323
324 cqp_request = nes_get_cqp_request(nesdev);
325 if (cqp_request == NULL) {
326 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
327 return;
328 }
329 cqp_request->waiting = 0;
330 cqp_request->callback = 1;
331 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
332 cqp_request->cqp_callback_pointer = nesqp;
333 cqp_wqe = &cqp_request->cqp_wqe;
334
335 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
336 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
337
338 if (nesqp->hte_added) {
339 opcode |= NES_CQP_QP_DEL_HTE;
340 nesqp->hte_added = 0;
341 }
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
343 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
344 u64temp = (u64)nesqp->nesqp_context_pbase;
345 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
346 nes_post_cqp_request(nesdev, cqp_request);
347 }
348}
349
350
351
352
353
354struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
355{
356 struct nes_vnic *nesvnic = to_nesvnic(device);
357 struct nes_device *nesdev = nesvnic->nesdev;
358 struct nes_adapter *nesadapter = nesdev->nesadapter;
359
360 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
361 return NULL;
362
363 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
364}
365
366
367
368
369
370static void nes_print_macaddr(struct net_device *netdev)
371{
372 nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
373 netdev->name, netdev->dev_addr, netdev->irq);
374}
375
376
377
378
379static irqreturn_t nes_interrupt(int irq, void *dev_id)
380{
381 struct nes_device *nesdev = (struct nes_device *)dev_id;
382 int handled = 0;
383 u32 int_mask;
384 u32 int_req;
385 u32 int_stat;
386 u32 intf_int_stat;
387 u32 timer_stat;
388
389 if (nesdev->msi_enabled) {
390
391 handled = 1;
392 } else {
393 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
394
395
396 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
397 if (int_mask & 0x80000000) {
398
399 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
400 int_req = nesdev->int_req;
401 if (int_stat&int_req) {
402
403 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
404 handled = 1;
405 } else {
406 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
407
408 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
409 if ((timer_stat & nesdev->timer_int_req) != 0) {
410 handled = 1;
411 }
412 }
413 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
414 (handled == 0)) {
415 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
416 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
417 handled = 1;
418 }
419 }
420 }
421 if (handled) {
422 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
423 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
424
425 nesdev->int_stat = int_stat;
426 nesdev->napi_isr_ran = 1;
427 }
428 }
429 }
430 } else {
431 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
432 }
433 }
434
435 if (handled) {
436
437 if (nes_napi_isr(nesdev) == 0) {
438 tasklet_schedule(&nesdev->dpc_tasklet);
439
440 }
441 return IRQ_HANDLED;
442 } else {
443 return IRQ_NONE;
444 }
445}
446
447
448
449
450
451static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
452{
453 struct net_device *netdev = NULL;
454 struct nes_device *nesdev = NULL;
455 int ret = 0;
456 void __iomem *mmio_regs = NULL;
457 u8 hw_rev;
458
459 assert(pcidev != NULL);
460 assert(ent != NULL);
461
462 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
463 DRV_VERSION, pci_name(pcidev));
464
465 ret = pci_enable_device(pcidev);
466 if (ret) {
467 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
468 goto bail0;
469 }
470
471 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
472 (long unsigned int)pci_resource_start(pcidev, BAR_0),
473 (long unsigned int)pci_resource_len(pcidev, BAR_0));
474 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
475 (long unsigned int)pci_resource_start(pcidev, BAR_1),
476 (long unsigned int)pci_resource_len(pcidev, BAR_1));
477
478
479 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
480 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
481 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
482 ret = -ENODEV;
483 goto bail1;
484 }
485
486
487 ret = pci_request_regions(pcidev, DRV_NAME);
488 if (ret) {
489 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
490 goto bail1;
491 }
492
493 if ((sizeof(dma_addr_t) > 4)) {
494 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
495 if (ret < 0) {
496 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
497 goto bail2;
498 }
499 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
500 if (ret) {
501 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
502 goto bail2;
503 }
504 } else {
505 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
506 if (ret < 0) {
507 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
508 goto bail2;
509 }
510 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
511 if (ret) {
512 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
513 goto bail2;
514 }
515 }
516
517 pci_set_master(pcidev);
518
519
520 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
521 if (!nesdev) {
522 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
523 ret = -ENOMEM;
524 goto bail2;
525 }
526
527 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
528 nesdev->pcidev = pcidev;
529 pci_set_drvdata(pcidev, nesdev);
530
531 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
532 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
533
534 spin_lock_init(&nesdev->indexed_regs_lock);
535
536
537 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
538 pci_resource_len(pcidev, BAR_0));
539 if (mmio_regs == NULL) {
540 printk(KERN_ERR PFX "Unable to remap BAR0\n");
541 ret = -EIO;
542 goto bail3;
543 }
544 nesdev->regs = mmio_regs;
545 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
546
547
548 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
549
550 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
551 if (!pci_enable_msi(nesdev->pcidev)) {
552 nesdev->msi_enabled = 1;
553 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
554 pci_name(pcidev));
555 } else {
556 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
557 pci_name(pcidev));
558 }
559 } else {
560 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
561 pci_name(pcidev));
562 }
563
564 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
565 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
566
567
568 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
569 if (!nesdev->nesadapter) {
570 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
571 ret = -ENOMEM;
572 goto bail5;
573 }
574 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
575 nesdev->nesadapter->wqm_quanta = wqm_quanta;
576
577
578
579 nesdev->base_doorbell_index = 1;
580 nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
581 if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
582 switch (PCI_FUNC(nesdev->pcidev->devfn) %
583 nesdev->nesadapter->port_count) {
584 case 1:
585 nesdev->mac_index = 2;
586 break;
587 case 2:
588 nesdev->mac_index = 1;
589 break;
590 case 3:
591 nesdev->mac_index = 3;
592 break;
593 case 0:
594 default:
595 nesdev->mac_index = 0;
596 }
597 } else {
598 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
599 nesdev->nesadapter->port_count;
600 }
601
602 if ((limit_maxrdreqsz ||
603 ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
604 (hw_rev == NE020_REV1))) &&
605 (pcie_get_readrq(pcidev) > 256)) {
606 if (pcie_set_readrq(pcidev, 256))
607 printk(KERN_ERR PFX "Unable to set max read request"
608 " to 256 bytes\n");
609 else
610 nes_debug(NES_DBG_INIT, "Max read request size set"
611 " to 256 bytes\n");
612 }
613
614 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
615
616
617 if (nes_init_cqp(nesdev)) {
618 ret = -ENODEV;
619 goto bail6;
620 }
621
622
623 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
624 PCI_FUNC(nesdev->pcidev->devfn));
625 nes_read32(nesdev->regs+NES_CQE_ALLOC);
626
627
628 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
629 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
630 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
631 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
632 }
633
634
635 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
636
637 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
638 nesdev->int_req |= NES_INT_INTF;
639 } else {
640 nesdev->intf_int_req = 0;
641 }
642 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
643 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
644 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
645 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
646 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
647
648 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
649
650
651 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
652 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
653 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
654 PCI_FUNC(nesdev->pcidev->devfn),
655 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
656
657 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
658
659 list_add_tail(&nesdev->list, &nes_dev_list);
660
661
662 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
663 if (ret) {
664 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
665 pci_name(pcidev), pcidev->irq);
666 goto bail65;
667 }
668
669 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
670
671 if (nes_notifiers_registered == 0) {
672 register_inetaddr_notifier(&nes_inetaddr_notifier);
673 register_netevent_notifier(&nes_net_notifier);
674 }
675 nes_notifiers_registered++;
676
677 INIT_DELAYED_WORK(&nesdev->work, nes_recheck_link_status);
678
679
680 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL)
681 goto bail7;
682
683
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_ERR 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
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
755
756static void __devexit 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
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
807 pci_release_regions(pcidev);
808 pci_disable_device(pcidev);
809 pci_set_drvdata(pcidev, NULL);
810}
811
812
813static struct pci_driver nes_pci_driver = {
814 .name = DRV_NAME,
815 .id_table = nes_pci_table,
816 .probe = nes_probe,
817 .remove = __devexit_p(nes_remove),
818};
819
820static 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
839static 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
848static 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
864static 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
885static 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
902static 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
923static 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
940static 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
961static 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
978static 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
999static 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
1004static 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
1015static 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
1032static 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
1053static 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
1058static 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
1069static 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
1086static 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
1110
1111static 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
1131
1132static 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 strict_strtoul(buf, 0, &wqm_quanta_value);
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
1156static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1157 nes_show_adapter, nes_store_adapter);
1158static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1159 nes_show_ee_cmd, nes_store_ee_cmd);
1160static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1161 nes_show_ee_data, nes_store_ee_data);
1162static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1163 nes_show_flash_cmd, nes_store_flash_cmd);
1164static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1165 nes_show_flash_data, nes_store_flash_data);
1166static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1167 nes_show_nonidx_addr, nes_store_nonidx_addr);
1168static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1169 nes_show_nonidx_data, nes_store_nonidx_data);
1170static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1171 nes_show_idx_addr, nes_store_idx_addr);
1172static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1173 nes_show_idx_data, nes_store_idx_data);
1174static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1175 nes_show_wqm_quanta, nes_store_wqm_quanta);
1176
1177static 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
1193static 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
1209
1210static 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
1232
1233static 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
1242module_init(nes_init_module);
1243module_exit(nes_exit_module);
1244
