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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[mirror_ubuntu-hirsute-kernel.git] / drivers / infiniband / hw / nes / nes.c
1 /*
2 * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
3 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/ethtool.h>
39 #include <linux/mii.h>
40 #include <linux/if_vlan.h>
41 #include <linux/crc32.h>
42 #include <linux/in.h>
43 #include <linux/fs.h>
44 #include <linux/init.h>
45 #include <linux/if_arp.h>
46 #include <linux/highmem.h>
47 #include <asm/io.h>
48 #include <asm/irq.h>
49 #include <asm/byteorder.h>
50 #include <rdma/ib_smi.h>
51 #include <rdma/ib_verbs.h>
52 #include <rdma/ib_pack.h>
53 #include <rdma/iw_cm.h>
54
55 #include "nes.h"
56
57 #include <net/netevent.h>
58 #include <net/neighbour.h>
59 #include <linux/route.h>
60 #include <net/ip_fib.h>
61
62 MODULE_AUTHOR("NetEffect");
63 MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
64 MODULE_LICENSE("Dual BSD/GPL");
65 MODULE_VERSION(DRV_VERSION);
66
67 int max_mtu = 9000;
68 int interrupt_mod_interval = 0;
69
70
71 /* Interoperability */
72 int mpa_version = 1;
73 module_param(mpa_version, int, 0);
74 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
75
76 /* Interoperability */
77 int disable_mpa_crc = 0;
78 module_param(disable_mpa_crc, int, 0);
79 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
80
81 unsigned int send_first = 0;
82 module_param(send_first, int, 0);
83 MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
84
85
86 unsigned int nes_drv_opt = 0;
87 module_param(nes_drv_opt, int, 0);
88 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
89
90 unsigned int nes_debug_level = 0;
91 module_param_named(debug_level, nes_debug_level, uint, 0644);
92 MODULE_PARM_DESC(debug_level, "Enable debug output level");
93
94 unsigned int nes_lro_max_aggr = NES_LRO_MAX_AGGR;
95 module_param(nes_lro_max_aggr, int, NES_LRO_MAX_AGGR);
96 MODULE_PARM_DESC(nes_mro_max_aggr, " nic LRO MAX packet aggregation");
97
98 LIST_HEAD(nes_adapter_list);
99 static LIST_HEAD(nes_dev_list);
100
101 atomic_t qps_destroyed;
102
103 static unsigned int ee_flsh_adapter;
104 static unsigned int sysfs_nonidx_addr;
105 static unsigned int sysfs_idx_addr;
106
107 static struct pci_device_id nes_pci_table[] = {
108 {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
109 {0}
110 };
111
112 MODULE_DEVICE_TABLE(pci, nes_pci_table);
113
114 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
115 static int nes_net_event(struct notifier_block *, unsigned long, void *);
116 static int nes_notifiers_registered;
117
118
119 static struct notifier_block nes_inetaddr_notifier = {
120 .notifier_call = nes_inetaddr_event
121 };
122
123 static struct notifier_block nes_net_notifier = {
124 .notifier_call = nes_net_event
125 };
126
127
128
129
130 /**
131 * nes_inetaddr_event
132 */
133 static int nes_inetaddr_event(struct notifier_block *notifier,
134 unsigned long event, void *ptr)
135 {
136 struct in_ifaddr *ifa = ptr;
137 struct net_device *event_netdev = ifa->ifa_dev->dev;
138 struct nes_device *nesdev;
139 struct net_device *netdev;
140 struct nes_vnic *nesvnic;
141 unsigned int addr;
142 unsigned int mask;
143
144 addr = ntohl(ifa->ifa_address);
145 mask = ntohl(ifa->ifa_mask);
146 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address " NIPQUAD_FMT
147 ", netmask " NIPQUAD_FMT ".\n",
148 HIPQUAD(addr), HIPQUAD(mask));
149 list_for_each_entry(nesdev, &nes_dev_list, list) {
150 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
151 nesdev, nesdev->netdev[0]->name);
152 netdev = nesdev->netdev[0];
153 nesvnic = netdev_priv(netdev);
154 if (netdev == event_netdev) {
155 if (nesvnic->rdma_enabled == 0) {
156 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
157 " RDMA is not enabled.\n",
158 netdev->name);
159 return NOTIFY_OK;
160 }
161 /* we have ifa->ifa_address/mask here if we need it */
162 switch (event) {
163 case NETDEV_DOWN:
164 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
165 nes_write_indexed(nesdev,
166 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
167
168 nes_manage_arp_cache(netdev, netdev->dev_addr,
169 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
170 nesvnic->local_ipaddr = 0;
171 return NOTIFY_OK;
172 break;
173 case NETDEV_UP:
174 nes_debug(NES_DBG_NETDEV, "event:UP\n");
175
176 if (nesvnic->local_ipaddr != 0) {
177 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
178 return NOTIFY_OK;
179 }
180 /* Add the address to the IP table */
181 nesvnic->local_ipaddr = ifa->ifa_address;
182
183 nes_write_indexed(nesdev,
184 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
185 ntohl(ifa->ifa_address));
186 nes_manage_arp_cache(netdev, netdev->dev_addr,
187 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
188 return NOTIFY_OK;
189 break;
190 default:
191 break;
192 }
193 }
194 }
195
196 return NOTIFY_DONE;
197 }
198
199
200 /**
201 * nes_net_event
202 */
203 static int nes_net_event(struct notifier_block *notifier,
204 unsigned long event, void *ptr)
205 {
206 struct neighbour *neigh = ptr;
207 struct nes_device *nesdev;
208 struct net_device *netdev;
209 struct nes_vnic *nesvnic;
210
211 switch (event) {
212 case NETEVENT_NEIGH_UPDATE:
213 list_for_each_entry(nesdev, &nes_dev_list, list) {
214 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
215 netdev = nesdev->netdev[0];
216 nesvnic = netdev_priv(netdev);
217 if (netdev == neigh->dev) {
218 if (nesvnic->rdma_enabled == 0) {
219 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
220 netdev->name);
221 } else {
222 if (neigh->nud_state & NUD_VALID) {
223 nes_manage_arp_cache(neigh->dev, neigh->ha,
224 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
225 } else {
226 nes_manage_arp_cache(neigh->dev, neigh->ha,
227 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
228 }
229 }
230 return NOTIFY_OK;
231 }
232 }
233 break;
234 default:
235 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
236 break;
237 }
238
239 return NOTIFY_DONE;
240 }
241
242
243 /**
244 * nes_add_ref
245 */
246 void nes_add_ref(struct ib_qp *ibqp)
247 {
248 struct nes_qp *nesqp;
249
250 nesqp = to_nesqp(ibqp);
251 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
252 ibqp->qp_num, atomic_read(&nesqp->refcount));
253 atomic_inc(&nesqp->refcount);
254 }
255
256 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
257 {
258 unsigned long flags;
259 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
260 struct nes_adapter *nesadapter = nesdev->nesadapter;
261 u32 qp_id;
262
263 atomic_inc(&qps_destroyed);
264
265 /* Free the control structures */
266
267 qp_id = nesqp->hwqp.qp_id;
268 if (nesqp->pbl_vbase) {
269 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
270 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
271 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
272 nesadapter->free_256pbl++;
273 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
274 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
275 nesqp->pbl_vbase = NULL;
276
277 } else {
278 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
279 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
280 }
281 nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
282
283 kfree(nesqp->allocated_buffer);
284
285 }
286
287 /**
288 * nes_rem_ref
289 */
290 void nes_rem_ref(struct ib_qp *ibqp)
291 {
292 u64 u64temp;
293 struct nes_qp *nesqp;
294 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
295 struct nes_device *nesdev = nesvnic->nesdev;
296 struct nes_adapter *nesadapter = nesdev->nesadapter;
297 struct nes_hw_cqp_wqe *cqp_wqe;
298 struct nes_cqp_request *cqp_request;
299 u32 opcode;
300
301 nesqp = to_nesqp(ibqp);
302
303 if (atomic_read(&nesqp->refcount) == 0) {
304 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
305 __func__, ibqp->qp_num, nesqp->last_aeq);
306 BUG();
307 }
308
309 if (atomic_dec_and_test(&nesqp->refcount)) {
310 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
311
312 /* Destroy the QP */
313 cqp_request = nes_get_cqp_request(nesdev);
314 if (cqp_request == NULL) {
315 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
316 return;
317 }
318 cqp_request->waiting = 0;
319 cqp_request->callback = 1;
320 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
321 cqp_request->cqp_callback_pointer = nesqp;
322 cqp_wqe = &cqp_request->cqp_wqe;
323
324 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
325 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
326
327 if (nesqp->hte_added) {
328 opcode |= NES_CQP_QP_DEL_HTE;
329 nesqp->hte_added = 0;
330 }
331 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
332 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
333 u64temp = (u64)nesqp->nesqp_context_pbase;
334 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
335 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
336 }
337 }
338
339
340 /**
341 * nes_get_qp
342 */
343 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
344 {
345 struct nes_vnic *nesvnic = to_nesvnic(device);
346 struct nes_device *nesdev = nesvnic->nesdev;
347 struct nes_adapter *nesadapter = nesdev->nesadapter;
348
349 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
350 return NULL;
351
352 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
353 }
354
355
356 /**
357 * nes_print_macaddr
358 */
359 static void nes_print_macaddr(struct net_device *netdev)
360 {
361 DECLARE_MAC_BUF(mac);
362
363 nes_debug(NES_DBG_INIT, "%s: %s, IRQ %u\n",
364 netdev->name, print_mac(mac, netdev->dev_addr), netdev->irq);
365 }
366
367 /**
368 * nes_interrupt - handle interrupts
369 */
370 static irqreturn_t nes_interrupt(int irq, void *dev_id)
371 {
372 struct nes_device *nesdev = (struct nes_device *)dev_id;
373 int handled = 0;
374 u32 int_mask;
375 u32 int_req;
376 u32 int_stat;
377 u32 intf_int_stat;
378 u32 timer_stat;
379
380 if (nesdev->msi_enabled) {
381 /* No need to read the interrupt pending register if msi is enabled */
382 handled = 1;
383 } else {
384 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
385 /* Master interrupt enable provides synchronization for kicking off bottom half
386 when interrupt sharing is going on */
387 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
388 if (int_mask & 0x80000000) {
389 /* Check interrupt status to see if this might be ours */
390 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
391 int_req = nesdev->int_req;
392 if (int_stat&int_req) {
393 /* if interesting CEQ or AEQ is pending, claim the interrupt */
394 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
395 handled = 1;
396 } else {
397 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
398 /* Timer might be running but might be for another function */
399 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
400 if ((timer_stat & nesdev->timer_int_req) != 0) {
401 handled = 1;
402 }
403 }
404 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
405 (handled == 0)) {
406 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
407 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
408 handled = 1;
409 }
410 }
411 }
412 if (handled) {
413 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
414 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
415 /* Save off the status to save an additional read */
416 nesdev->int_stat = int_stat;
417 nesdev->napi_isr_ran = 1;
418 }
419 }
420 }
421 } else {
422 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
423 }
424 }
425
426 if (handled) {
427
428 if (nes_napi_isr(nesdev) == 0) {
429 tasklet_schedule(&nesdev->dpc_tasklet);
430
431 }
432 return IRQ_HANDLED;
433 } else {
434 return IRQ_NONE;
435 }
436 }
437
438
439 /**
440 * nes_probe - Device initialization
441 */
442 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
443 {
444 struct net_device *netdev = NULL;
445 struct nes_device *nesdev = NULL;
446 int ret = 0;
447 struct nes_vnic *nesvnic = NULL;
448 void __iomem *mmio_regs = NULL;
449 u8 hw_rev;
450
451 assert(pcidev != NULL);
452 assert(ent != NULL);
453
454 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
455 DRV_VERSION, pci_name(pcidev));
456
457 ret = pci_enable_device(pcidev);
458 if (ret) {
459 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
460 goto bail0;
461 }
462
463 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
464 (long unsigned int)pci_resource_start(pcidev, BAR_0),
465 (long unsigned int)pci_resource_len(pcidev, BAR_0));
466 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
467 (long unsigned int)pci_resource_start(pcidev, BAR_1),
468 (long unsigned int)pci_resource_len(pcidev, BAR_1));
469
470 /* Make sure PCI base addr are MMIO */
471 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
472 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
473 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
474 ret = -ENODEV;
475 goto bail1;
476 }
477
478 /* Reserve PCI I/O and memory resources */
479 ret = pci_request_regions(pcidev, DRV_NAME);
480 if (ret) {
481 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
482 goto bail1;
483 }
484
485 if ((sizeof(dma_addr_t) > 4)) {
486 ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK);
487 if (ret < 0) {
488 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
489 goto bail2;
490 }
491 ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK);
492 if (ret) {
493 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
494 goto bail2;
495 }
496 } else {
497 ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
498 if (ret < 0) {
499 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
500 goto bail2;
501 }
502 ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK);
503 if (ret) {
504 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
505 goto bail2;
506 }
507 }
508
509 pci_set_master(pcidev);
510
511 /* Allocate hardware structure */
512 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
513 if (!nesdev) {
514 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
515 ret = -ENOMEM;
516 goto bail2;
517 }
518
519 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
520 nesdev->pcidev = pcidev;
521 pci_set_drvdata(pcidev, nesdev);
522
523 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
524 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
525
526 spin_lock_init(&nesdev->indexed_regs_lock);
527
528 /* Remap the PCI registers in adapter BAR0 to kernel VA space */
529 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
530 if (mmio_regs == NULL) {
531 printk(KERN_ERR PFX "Unable to remap BAR0\n");
532 ret = -EIO;
533 goto bail3;
534 }
535 nesdev->regs = mmio_regs;
536 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
537
538 /* Ensure interrupts are disabled */
539 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
540
541 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
542 if (!pci_enable_msi(nesdev->pcidev)) {
543 nesdev->msi_enabled = 1;
544 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
545 pci_name(pcidev));
546 } else {
547 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
548 pci_name(pcidev));
549 }
550 } else {
551 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
552 pci_name(pcidev));
553 }
554
555 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
556 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
557
558 /* Init the adapter */
559 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
560 if (!nesdev->nesadapter) {
561 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
562 ret = -ENOMEM;
563 goto bail5;
564 }
565 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
566
567 /* nesdev->base_doorbell_index =
568 nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
569 nesdev->base_doorbell_index = 1;
570 nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
571 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
572
573 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
574
575 /* bring up the Control QP */
576 if (nes_init_cqp(nesdev)) {
577 ret = -ENODEV;
578 goto bail6;
579 }
580
581 /* Arm the CCQ */
582 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
583 PCI_FUNC(nesdev->pcidev->devfn));
584 nes_read32(nesdev->regs+NES_CQE_ALLOC);
585
586 /* Enable the interrupts */
587 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
588 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
589 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
590 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
591 }
592
593 /* TODO: This really should be the first driver to load, not function 0 */
594 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
595 /* pick up PCI and critical errors if the first driver to load */
596 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
597 nesdev->int_req |= NES_INT_INTF;
598 } else {
599 nesdev->intf_int_req = 0;
600 }
601 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
602 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
603 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
604 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
605 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
606
607 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
608
609 /* deal with both periodic and one_shot */
610 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
611 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
612 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
613 PCI_FUNC(nesdev->pcidev->devfn),
614 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
615
616 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
617
618 list_add_tail(&nesdev->list, &nes_dev_list);
619
620 /* Request an interrupt line for the driver */
621 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
622 if (ret) {
623 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
624 pci_name(pcidev), pcidev->irq);
625 goto bail65;
626 }
627
628 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
629
630 if (nes_notifiers_registered == 0) {
631 register_inetaddr_notifier(&nes_inetaddr_notifier);
632 register_netevent_notifier(&nes_net_notifier);
633 }
634 nes_notifiers_registered++;
635
636 /* Initialize network devices */
637 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
638 goto bail7;
639 }
640
641 /* Register network device */
642 ret = register_netdev(netdev);
643 if (ret) {
644 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
645 nes_netdev_destroy(netdev);
646 goto bail7;
647 }
648
649 nes_print_macaddr(netdev);
650 /* create a CM core for this netdev */
651 nesvnic = netdev_priv(netdev);
652
653 nesdev->netdev_count++;
654 nesdev->nesadapter->netdev_count++;
655
656
657 printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
658 pci_name(pcidev));
659 return 0;
660
661 bail7:
662 printk(KERN_ERR PFX "bail7\n");
663 while (nesdev->netdev_count > 0) {
664 nesdev->netdev_count--;
665 nesdev->nesadapter->netdev_count--;
666
667 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
668 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
669 }
670
671 nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
672 nesdev->netdev_count, nesdev->nesadapter->netdev_count);
673
674 nes_notifiers_registered--;
675 if (nes_notifiers_registered == 0) {
676 unregister_netevent_notifier(&nes_net_notifier);
677 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
678 }
679
680 list_del(&nesdev->list);
681 nes_destroy_cqp(nesdev);
682
683 bail65:
684 printk(KERN_ERR PFX "bail65\n");
685 free_irq(pcidev->irq, nesdev);
686 if (nesdev->msi_enabled) {
687 pci_disable_msi(pcidev);
688 }
689 bail6:
690 printk(KERN_ERR PFX "bail6\n");
691 tasklet_kill(&nesdev->dpc_tasklet);
692 /* Deallocate the Adapter Structure */
693 nes_destroy_adapter(nesdev->nesadapter);
694
695 bail5:
696 printk(KERN_ERR PFX "bail5\n");
697 iounmap(nesdev->regs);
698
699 bail3:
700 printk(KERN_ERR PFX "bail3\n");
701 kfree(nesdev);
702
703 bail2:
704 pci_release_regions(pcidev);
705
706 bail1:
707 pci_disable_device(pcidev);
708
709 bail0:
710 return ret;
711 }
712
713
714 /**
715 * nes_remove - unload from kernel
716 */
717 static void __devexit nes_remove(struct pci_dev *pcidev)
718 {
719 struct nes_device *nesdev = pci_get_drvdata(pcidev);
720 struct net_device *netdev;
721 int netdev_index = 0;
722
723 if (nesdev->netdev_count) {
724 netdev = nesdev->netdev[netdev_index];
725 if (netdev) {
726 netif_stop_queue(netdev);
727 unregister_netdev(netdev);
728 nes_netdev_destroy(netdev);
729
730 nesdev->netdev[netdev_index] = NULL;
731 nesdev->netdev_count--;
732 nesdev->nesadapter->netdev_count--;
733 }
734 }
735
736 nes_notifiers_registered--;
737 if (nes_notifiers_registered == 0) {
738 unregister_netevent_notifier(&nes_net_notifier);
739 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
740 }
741
742 list_del(&nesdev->list);
743 nes_destroy_cqp(nesdev);
744
745 free_irq(pcidev->irq, nesdev);
746 tasklet_kill(&nesdev->dpc_tasklet);
747
748 /* Deallocate the Adapter Structure */
749 nes_destroy_adapter(nesdev->nesadapter);
750
751 if (nesdev->msi_enabled) {
752 pci_disable_msi(pcidev);
753 }
754
755 iounmap(nesdev->regs);
756 kfree(nesdev);
757
758 /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
759 pci_release_regions(pcidev);
760 pci_disable_device(pcidev);
761 pci_set_drvdata(pcidev, NULL);
762 }
763
764
765 static struct pci_driver nes_pci_driver = {
766 .name = DRV_NAME,
767 .id_table = nes_pci_table,
768 .probe = nes_probe,
769 .remove = __devexit_p(nes_remove),
770 };
771
772 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
773 {
774 unsigned int devfn = 0xffffffff;
775 unsigned char bus_number = 0xff;
776 unsigned int i = 0;
777 struct nes_device *nesdev;
778
779 list_for_each_entry(nesdev, &nes_dev_list, list) {
780 if (i == ee_flsh_adapter) {
781 devfn = nesdev->nesadapter->devfn;
782 bus_number = nesdev->nesadapter->bus_number;
783 break;
784 }
785 i++;
786 }
787
788 return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
789 }
790
791 static ssize_t nes_store_adapter(struct device_driver *ddp,
792 const char *buf, size_t count)
793 {
794 char *p = (char *)buf;
795
796 ee_flsh_adapter = simple_strtoul(p, &p, 10);
797 return strnlen(buf, count);
798 }
799
800 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
801 {
802 u32 eeprom_cmd = 0xdead;
803 u32 i = 0;
804 struct nes_device *nesdev;
805
806 list_for_each_entry(nesdev, &nes_dev_list, list) {
807 if (i == ee_flsh_adapter) {
808 eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
809 break;
810 }
811 i++;
812 }
813 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
814 }
815
816 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
817 const char *buf, size_t count)
818 {
819 char *p = (char *)buf;
820 u32 val;
821 u32 i = 0;
822 struct nes_device *nesdev;
823
824 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
825 val = simple_strtoul(p, &p, 16);
826 list_for_each_entry(nesdev, &nes_dev_list, list) {
827 if (i == ee_flsh_adapter) {
828 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
829 break;
830 }
831 i++;
832 }
833 }
834 return strnlen(buf, count);
835 }
836
837 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
838 {
839 u32 eeprom_data = 0xdead;
840 u32 i = 0;
841 struct nes_device *nesdev;
842
843 list_for_each_entry(nesdev, &nes_dev_list, list) {
844 if (i == ee_flsh_adapter) {
845 eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
846 break;
847 }
848 i++;
849 }
850
851 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
852 }
853
854 static ssize_t nes_store_ee_data(struct device_driver *ddp,
855 const char *buf, size_t count)
856 {
857 char *p = (char *)buf;
858 u32 val;
859 u32 i = 0;
860 struct nes_device *nesdev;
861
862 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
863 val = simple_strtoul(p, &p, 16);
864 list_for_each_entry(nesdev, &nes_dev_list, list) {
865 if (i == ee_flsh_adapter) {
866 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
867 break;
868 }
869 i++;
870 }
871 }
872 return strnlen(buf, count);
873 }
874
875 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
876 {
877 u32 flash_cmd = 0xdead;
878 u32 i = 0;
879 struct nes_device *nesdev;
880
881 list_for_each_entry(nesdev, &nes_dev_list, list) {
882 if (i == ee_flsh_adapter) {
883 flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
884 break;
885 }
886 i++;
887 }
888
889 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
890 }
891
892 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
893 const char *buf, size_t count)
894 {
895 char *p = (char *)buf;
896 u32 val;
897 u32 i = 0;
898 struct nes_device *nesdev;
899
900 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
901 val = simple_strtoul(p, &p, 16);
902 list_for_each_entry(nesdev, &nes_dev_list, list) {
903 if (i == ee_flsh_adapter) {
904 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
905 break;
906 }
907 i++;
908 }
909 }
910 return strnlen(buf, count);
911 }
912
913 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
914 {
915 u32 flash_data = 0xdead;
916 u32 i = 0;
917 struct nes_device *nesdev;
918
919 list_for_each_entry(nesdev, &nes_dev_list, list) {
920 if (i == ee_flsh_adapter) {
921 flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
922 break;
923 }
924 i++;
925 }
926
927 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
928 }
929
930 static ssize_t nes_store_flash_data(struct device_driver *ddp,
931 const char *buf, size_t count)
932 {
933 char *p = (char *)buf;
934 u32 val;
935 u32 i = 0;
936 struct nes_device *nesdev;
937
938 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
939 val = simple_strtoul(p, &p, 16);
940 list_for_each_entry(nesdev, &nes_dev_list, list) {
941 if (i == ee_flsh_adapter) {
942 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
943 break;
944 }
945 i++;
946 }
947 }
948 return strnlen(buf, count);
949 }
950
951 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
952 {
953 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
954 }
955
956 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
957 const char *buf, size_t count)
958 {
959 char *p = (char *)buf;
960
961 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
962 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
963
964 return strnlen(buf, count);
965 }
966
967 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
968 {
969 u32 nonidx_data = 0xdead;
970 u32 i = 0;
971 struct nes_device *nesdev;
972
973 list_for_each_entry(nesdev, &nes_dev_list, list) {
974 if (i == ee_flsh_adapter) {
975 nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
976 break;
977 }
978 i++;
979 }
980
981 return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
982 }
983
984 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
985 const char *buf, size_t count)
986 {
987 char *p = (char *)buf;
988 u32 val;
989 u32 i = 0;
990 struct nes_device *nesdev;
991
992 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
993 val = simple_strtoul(p, &p, 16);
994 list_for_each_entry(nesdev, &nes_dev_list, list) {
995 if (i == ee_flsh_adapter) {
996 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
997 break;
998 }
999 i++;
1000 }
1001 }
1002 return strnlen(buf, count);
1003 }
1004
1005 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1006 {
1007 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1008 }
1009
1010 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1011 const char *buf, size_t count)
1012 {
1013 char *p = (char *)buf;
1014
1015 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1016 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1017
1018 return strnlen(buf, count);
1019 }
1020
1021 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1022 {
1023 u32 idx_data = 0xdead;
1024 u32 i = 0;
1025 struct nes_device *nesdev;
1026
1027 list_for_each_entry(nesdev, &nes_dev_list, list) {
1028 if (i == ee_flsh_adapter) {
1029 idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1030 break;
1031 }
1032 i++;
1033 }
1034
1035 return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1036 }
1037
1038 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1039 const char *buf, size_t count)
1040 {
1041 char *p = (char *)buf;
1042 u32 val;
1043 u32 i = 0;
1044 struct nes_device *nesdev;
1045
1046 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1047 val = simple_strtoul(p, &p, 16);
1048 list_for_each_entry(nesdev, &nes_dev_list, list) {
1049 if (i == ee_flsh_adapter) {
1050 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1051 break;
1052 }
1053 i++;
1054 }
1055 }
1056 return strnlen(buf, count);
1057 }
1058
1059 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1060 nes_show_adapter, nes_store_adapter);
1061 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1062 nes_show_ee_cmd, nes_store_ee_cmd);
1063 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1064 nes_show_ee_data, nes_store_ee_data);
1065 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1066 nes_show_flash_cmd, nes_store_flash_cmd);
1067 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1068 nes_show_flash_data, nes_store_flash_data);
1069 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1070 nes_show_nonidx_addr, nes_store_nonidx_addr);
1071 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1072 nes_show_nonidx_data, nes_store_nonidx_data);
1073 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1074 nes_show_idx_addr, nes_store_idx_addr);
1075 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1076 nes_show_idx_data, nes_store_idx_data);
1077
1078 static int nes_create_driver_sysfs(struct pci_driver *drv)
1079 {
1080 int error;
1081 error = driver_create_file(&drv->driver, &driver_attr_adapter);
1082 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1083 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1084 error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1085 error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1086 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1087 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1088 error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1089 error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1090 return error;
1091 }
1092
1093 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1094 {
1095 driver_remove_file(&drv->driver, &driver_attr_adapter);
1096 driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1097 driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1098 driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1099 driver_remove_file(&drv->driver, &driver_attr_flash_data);
1100 driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1101 driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1102 driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1103 driver_remove_file(&drv->driver, &driver_attr_idx_data);
1104 }
1105
1106 /**
1107 * nes_init_module - module initialization entry point
1108 */
1109 static int __init nes_init_module(void)
1110 {
1111 int retval;
1112 int retval1;
1113
1114 retval = nes_cm_start();
1115 if (retval) {
1116 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1117 return retval;
1118 }
1119 retval = pci_register_driver(&nes_pci_driver);
1120 if (retval >= 0) {
1121 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1122 if (retval1 < 0)
1123 printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1124 }
1125 return retval;
1126 }
1127
1128
1129 /**
1130 * nes_exit_module - module unload entry point
1131 */
1132 static void __exit nes_exit_module(void)
1133 {
1134 nes_cm_stop();
1135 nes_remove_driver_sysfs(&nes_pci_driver);
1136
1137 pci_unregister_driver(&nes_pci_driver);
1138 }
1139
1140
1141 module_init(nes_init_module);
1142 module_exit(nes_exit_module);
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