1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
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
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 nes_drv_opt = NES_DRV_OPT_DISABLE_INT_MOD | NES_DRV_OPT_ENABLE_PAU;
83module_param(nes_drv_opt, int, 0644);
84MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
85
86unsigned int nes_debug_level = 0;
87module_param_named(debug_level, nes_debug_level, uint, 0644);
88MODULE_PARM_DESC(debug_level, "Enable debug output level");
89
90unsigned int wqm_quanta = 0x10000;
91module_param(wqm_quanta, int, 0644);
92MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
93
94static bool limit_maxrdreqsz;
95module_param(limit_maxrdreqsz, bool, 0644);
96MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
97
98LIST_HEAD(nes_adapter_list);
99static LIST_HEAD(nes_dev_list);
100
101atomic_t qps_destroyed;
102
103static unsigned int ee_flsh_adapter;
104static unsigned int sysfs_nonidx_addr;
105static unsigned int sysfs_idx_addr;
106
107static struct pci_device_id nes_pci_table[] = {
108 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
109 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
110 {0}
111};
112
113MODULE_DEVICE_TABLE(pci, nes_pci_table);
114
115static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
116static int nes_net_event(struct notifier_block *, unsigned long, void *);
117static int nes_notifiers_registered;
118
119
120static struct notifier_block nes_inetaddr_notifier = {
121 .notifier_call = nes_inetaddr_event
122};
123
124static struct notifier_block nes_net_notifier = {
125 .notifier_call = nes_net_event
126};
127
128
129
130
131static int nes_inetaddr_event(struct notifier_block *notifier,
132 unsigned long event, void *ptr)
133{
134 struct in_ifaddr *ifa = ptr;
135 struct net_device *event_netdev = ifa->ifa_dev->dev;
136 struct nes_device *nesdev;
137 struct net_device *netdev;
138 struct net_device *upper_dev;
139 struct nes_vnic *nesvnic;
140 unsigned int is_bonded;
141
142 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
143 &ifa->ifa_address, &ifa->ifa_mask);
144 list_for_each_entry(nesdev, &nes_dev_list, list) {
145 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
146 nesdev, nesdev->netdev[0]->name);
147 netdev = nesdev->netdev[0];
148 nesvnic = netdev_priv(netdev);
149 upper_dev = netdev_master_upper_dev_get(netdev);
150 is_bonded = netif_is_bond_slave(netdev) &&
151 (upper_dev == event_netdev);
152 if ((netdev == event_netdev) || is_bonded) {
153 if (nesvnic->rdma_enabled == 0) {
154 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
155 " RDMA is not enabled.\n",
156 netdev->name);
157 return NOTIFY_OK;
158 }
159
160 switch (event) {
161 case NETDEV_DOWN:
162 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
163 nes_write_indexed(nesdev,
164 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
165
166 nes_manage_arp_cache(netdev, netdev->dev_addr,
167 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
168 nesvnic->local_ipaddr = 0;
169 if (is_bonded)
170 continue;
171 else
172 return NOTIFY_OK;
173 break;
174 case NETDEV_UP:
175 nes_debug(NES_DBG_NETDEV, "event:UP\n");
176
177 if (nesvnic->local_ipaddr != 0) {
178 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
179 return NOTIFY_OK;
180 }
181
182 case NETDEV_CHANGEADDR:
183
184 if (upper_dev)
185 nesvnic->local_ipaddr =
186 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address;
187 else
188 nesvnic->local_ipaddr = ifa->ifa_address;
189
190 nes_write_indexed(nesdev,
191 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
192 ntohl(nesvnic->local_ipaddr));
193 nes_manage_arp_cache(netdev, netdev->dev_addr,
194 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
195 if (is_bonded)
196 continue;
197 else
198 return NOTIFY_OK;
199 break;
200 default:
201 break;
202 }
203 }
204 }
205
206 return NOTIFY_DONE;
207}
208
209
210
211
212
213static int nes_net_event(struct notifier_block *notifier,
214 unsigned long event, void *ptr)
215{
216 struct neighbour *neigh = ptr;
217 struct nes_device *nesdev;
218 struct net_device *netdev;
219 struct nes_vnic *nesvnic;
220
221 switch (event) {
222 case NETEVENT_NEIGH_UPDATE:
223 list_for_each_entry(nesdev, &nes_dev_list, list) {
224
225 netdev = nesdev->netdev[0];
226 nesvnic = netdev_priv(netdev);
227 if (netdev == neigh->dev) {
228 if (nesvnic->rdma_enabled == 0) {
229 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
230 netdev->name);
231 } else {
232 if (neigh->nud_state & NUD_VALID) {
233 nes_manage_arp_cache(neigh->dev, neigh->ha,
234 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
235 } else {
236 nes_manage_arp_cache(neigh->dev, neigh->ha,
237 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
238 }
239 }
240 return NOTIFY_OK;
241 }
242 }
243 break;
244 default:
245 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
246 break;
247 }
248
249 return NOTIFY_DONE;
250}
251
252
253
254
255
256void nes_add_ref(struct ib_qp *ibqp)
257{
258 struct nes_qp *nesqp;
259
260 nesqp = to_nesqp(ibqp);
261 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
262 ibqp->qp_num, atomic_read(&nesqp->refcount));
263 atomic_inc(&nesqp->refcount);
264}
265
266static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
267{
268 unsigned long flags;
269 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
270 struct nes_adapter *nesadapter = nesdev->nesadapter;
271
272 atomic_inc(&qps_destroyed);
273
274
275
276 if (nesqp->pbl_vbase) {
277 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
278 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
279 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
280 nesadapter->free_256pbl++;
281 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
282 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
283 nesqp->pbl_vbase = NULL;
284
285 } else {
286 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
287 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
288 }
289 nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
290
291 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
292 kfree(nesqp->allocated_buffer);
293
294}
295
296
297
298
299void nes_rem_ref(struct ib_qp *ibqp)
300{
301 u64 u64temp;
302 struct nes_qp *nesqp;
303 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
304 struct nes_device *nesdev = nesvnic->nesdev;
305 struct nes_hw_cqp_wqe *cqp_wqe;
306 struct nes_cqp_request *cqp_request;
307 u32 opcode;
308
309 nesqp = to_nesqp(ibqp);
310
311 if (atomic_read(&nesqp->refcount) == 0) {
312 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
313 __func__, ibqp->qp_num, nesqp->last_aeq);
314 BUG();
315 }
316
317 if (atomic_dec_and_test(&nesqp->refcount)) {
318 if (nesqp->pau_mode)
319 nes_destroy_pau_qp(nesdev, nesqp);
320
321
322 cqp_request = nes_get_cqp_request(nesdev);
323 if (cqp_request == NULL) {
324 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
325 return;
326 }
327 cqp_request->waiting = 0;
328 cqp_request->callback = 1;
329 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
330 cqp_request->cqp_callback_pointer = nesqp;
331 cqp_wqe = &cqp_request->cqp_wqe;
332
333 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
334 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
335
336 if (nesqp->hte_added) {
337 opcode |= NES_CQP_QP_DEL_HTE;
338 nesqp->hte_added = 0;
339 }
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
341 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
342 u64temp = (u64)nesqp->nesqp_context_pbase;
343 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
344 nes_post_cqp_request(nesdev, cqp_request);
345 }
346}
347
348
349
350
351
352struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
353{
354 struct nes_vnic *nesvnic = to_nesvnic(device);
355 struct nes_device *nesdev = nesvnic->nesdev;
356 struct nes_adapter *nesadapter = nesdev->nesadapter;
357
358 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
359 return NULL;
360
361 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
362}
363
364
365
366
367
368static void nes_print_macaddr(struct net_device *netdev)
369{
370 nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
371 netdev->name, netdev->dev_addr, netdev->irq);
372}
373
374
375
376
377static irqreturn_t nes_interrupt(int irq, void *dev_id)
378{
379 struct nes_device *nesdev = (struct nes_device *)dev_id;
380 int handled = 0;
381 u32 int_mask;
382 u32 int_req;
383 u32 int_stat;
384 u32 intf_int_stat;
385 u32 timer_stat;
386
387 if (nesdev->msi_enabled) {
388
389 handled = 1;
390 } else {
391 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
392
393
394 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
395 if (int_mask & 0x80000000) {
396
397 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
398 int_req = nesdev->int_req;
399 if (int_stat&int_req) {
400
401 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
402 handled = 1;
403 } else {
404 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
405
406 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
407 if ((timer_stat & nesdev->timer_int_req) != 0) {
408 handled = 1;
409 }
410 }
411 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
412 (handled == 0)) {
413 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
414 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
415 handled = 1;
416 }
417 }
418 }
419 if (handled) {
420 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
421 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
422
423 nesdev->int_stat = int_stat;
424 nesdev->napi_isr_ran = 1;
425 }
426 }
427 }
428 } else {
429 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
430 }
431 }
432
433 if (handled) {
434
435 if (nes_napi_isr(nesdev) == 0) {
436 tasklet_schedule(&nesdev->dpc_tasklet);
437
438 }
439 return IRQ_HANDLED;
440 } else {
441 return IRQ_NONE;
442 }
443}
444
445
446
447
448
449static int nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
450{
451 struct net_device *netdev = NULL;
452 struct nes_device *nesdev = NULL;
453 int ret = 0;
454 void __iomem *mmio_regs = NULL;
455 u8 hw_rev;
456
457 assert(pcidev != NULL);
458 assert(ent != NULL);
459
460 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
461 DRV_VERSION, pci_name(pcidev));
462
463 ret = pci_enable_device(pcidev);
464 if (ret) {
465 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
466 goto bail0;
467 }
468
469 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
470 (long unsigned int)pci_resource_start(pcidev, BAR_0),
471 (long unsigned int)pci_resource_len(pcidev, BAR_0));
472 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
473 (long unsigned int)pci_resource_start(pcidev, BAR_1),
474 (long unsigned int)pci_resource_len(pcidev, BAR_1));
475
476
477 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
478 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
479 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
480 ret = -ENODEV;
481 goto bail1;
482 }
483
484
485 ret = pci_request_regions(pcidev, DRV_NAME);
486 if (ret) {
487 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
488 goto bail1;
489 }
490
491 if ((sizeof(dma_addr_t) > 4)) {
492 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
493 if (ret < 0) {
494 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
495 goto bail2;
496 }
497 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
498 if (ret) {
499 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
500 goto bail2;
501 }
502 } else {
503 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
504 if (ret < 0) {
505 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
506 goto bail2;
507 }
508 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
509 if (ret) {
510 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
511 goto bail2;
512 }
513 }
514
515 pci_set_master(pcidev);
516
517
518 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
519 if (!nesdev) {
520 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
521 ret = -ENOMEM;
522 goto bail2;
523 }
524
525 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
526 nesdev->pcidev = pcidev;
527 pci_set_drvdata(pcidev, nesdev);
528
529 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
530 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
531
532 spin_lock_init(&nesdev->indexed_regs_lock);
533
534
535 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
536 pci_resource_len(pcidev, BAR_0));
537 if (mmio_regs == NULL) {
538 printk(KERN_ERR PFX "Unable to remap BAR0\n");
539 ret = -EIO;
540 goto bail3;
541 }
542 nesdev->regs = mmio_regs;
543 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
544
545
546 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
547
548 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
549 if (!pci_enable_msi(nesdev->pcidev)) {
550 nesdev->msi_enabled = 1;
551 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
552 pci_name(pcidev));
553 } else {
554 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
555 pci_name(pcidev));
556 }
557 } else {
558 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
559 pci_name(pcidev));
560 }
561
562 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
563 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
564
565
566 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
567 if (!nesdev->nesadapter) {
568 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
569 ret = -ENOMEM;
570 goto bail5;
571 }
572 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
573 nesdev->nesadapter->wqm_quanta = wqm_quanta;
574
575
576
577 nesdev->base_doorbell_index = 1;
578 nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
579 if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
580 switch (PCI_FUNC(nesdev->pcidev->devfn) %
581 nesdev->nesadapter->port_count) {
582 case 1:
583 nesdev->mac_index = 2;
584 break;
585 case 2:
586 nesdev->mac_index = 1;
587 break;
588 case 3:
589 nesdev->mac_index = 3;
590 break;
591 case 0:
592 default:
593 nesdev->mac_index = 0;
594 }
595 } else {
596 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
597 nesdev->nesadapter->port_count;
598 }
599
600 if ((limit_maxrdreqsz ||
601 ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
602 (hw_rev == NE020_REV1))) &&
603 (pcie_get_readrq(pcidev) > 256)) {
604 if (pcie_set_readrq(pcidev, 256))
605 printk(KERN_ERR PFX "Unable to set max read request"
606 " to 256 bytes\n");
607 else
608 nes_debug(NES_DBG_INIT, "Max read request size set"
609 " to 256 bytes\n");
610 }
611
612 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
613
614
615 if (nes_init_cqp(nesdev)) {
616 ret = -ENODEV;
617 goto bail6;
618 }
619
620
621 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
622 PCI_FUNC(nesdev->pcidev->devfn));
623 nes_read32(nesdev->regs+NES_CQE_ALLOC);
624
625
626 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
627 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
628 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
629 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
630 }
631
632
633 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
634
635 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
636 nesdev->int_req |= NES_INT_INTF;
637 } else {
638 nesdev->intf_int_req = 0;
639 }
640 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
641 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
642 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
643 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
644 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
645
646 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
647
648
649 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
650 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
651 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
652 PCI_FUNC(nesdev->pcidev->devfn),
653 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
654
655 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
656
657 list_add_tail(&nesdev->list, &nes_dev_list);
658
659
660 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
661 if (ret) {
662 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
663 pci_name(pcidev), pcidev->irq);
664 goto bail65;
665 }
666
667 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
668
669 if (nes_notifiers_registered == 0) {
670 register_inetaddr_notifier(&nes_inetaddr_notifier);
671 register_netevent_notifier(&nes_net_notifier);
672 }
673 nes_notifiers_registered++;
674
675 INIT_DELAYED_WORK(&nesdev->work, nes_recheck_link_status);
676
677
678 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL)
679 goto bail7;
680
681
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
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
753
754static 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
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
805 pci_release_regions(pcidev);
806 pci_disable_device(pcidev);
807 pci_set_drvdata(pcidev, NULL);
808}
809
810
811static 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
818static 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
837static 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
846static 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
862static 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
883static 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
900static 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
921static 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
938static 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
959static 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
976static 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
997static 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
1002static 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
1013static 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
1030static 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
1051static 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
1056static 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
1067static 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
1084static 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
1108
1109static 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
1129
1130static 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
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
