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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / infiniband / hw / nes / nes.c
bloba3b23749483c9dcdd7c7ffbae8dbbc3241eea644
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 nics_per_function = 1;
69 int interrupt_mod_interval = 0;
70
71
72 /* Interoperability */
73 int mpa_version = 1;
74 module_param(mpa_version, int, 0);
75 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
76
77 /* Interoperability */
78 int disable_mpa_crc = 0;
79 module_param(disable_mpa_crc, int, 0);
80 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
81
82 unsigned int send_first = 0;
83 module_param(send_first, int, 0);
84 MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
85
86
87 unsigned int nes_drv_opt = 0;
88 module_param(nes_drv_opt, int, 0);
89 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
90
91 unsigned int nes_debug_level = 0;
92 module_param_named(debug_level, nes_debug_level, uint, 0644);
93 MODULE_PARM_DESC(debug_level, "Enable debug output level");
94
95 LIST_HEAD(nes_adapter_list);
96 LIST_HEAD(nes_dev_list);
97
98 atomic_t qps_destroyed;
99 atomic_t cqp_reqs_allocated;
100 atomic_t cqp_reqs_freed;
101 atomic_t cqp_reqs_dynallocated;
102 atomic_t cqp_reqs_dynfreed;
103 atomic_t cqp_reqs_queued;
104 atomic_t cqp_reqs_redriven;
105
106 static void nes_print_macaddr(struct net_device *netdev);
107 static irqreturn_t nes_interrupt(int, void *);
108 static int __devinit nes_probe(struct pci_dev *, const struct pci_device_id *);
109 static void __devexit nes_remove(struct pci_dev *);
110 static int __init nes_init_module(void);
111 static void __exit nes_exit_module(void);
112 static unsigned int ee_flsh_adapter;
113 static unsigned int sysfs_nonidx_addr;
114 static unsigned int sysfs_idx_addr;
115
116 static struct pci_device_id nes_pci_table[] = {
117 {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
118 {0}
119 };
120
121 MODULE_DEVICE_TABLE(pci, nes_pci_table);
122
123 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
124 static int nes_net_event(struct notifier_block *, unsigned long, void *);
125 static int nes_notifiers_registered;
126
127
128 static struct notifier_block nes_inetaddr_notifier = {
129 .notifier_call = nes_inetaddr_event
130 };
131
132 static struct notifier_block nes_net_notifier = {
133 .notifier_call = nes_net_event
134 };
135
136
137
138
139 /**
140 * nes_inetaddr_event
141 */
142 static int nes_inetaddr_event(struct notifier_block *notifier,
143 unsigned long event, void *ptr)
144 {
145 struct in_ifaddr *ifa = ptr;
146 struct net_device *event_netdev = ifa->ifa_dev->dev;
147 struct nes_device *nesdev;
148 struct net_device *netdev;
149 struct nes_vnic *nesvnic;
150 unsigned int addr;
151 unsigned int mask;
152
153 addr = ntohl(ifa->ifa_address);
154 mask = ntohl(ifa->ifa_mask);
155 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %08X, netmask %08X.\n",
156 addr, mask);
157 list_for_each_entry(nesdev, &nes_dev_list, list) {
158 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
159 nesdev, nesdev->netdev[0]->name);
160 netdev = nesdev->netdev[0];
161 nesvnic = netdev_priv(netdev);
162 if (netdev == event_netdev) {
163 if (nesvnic->rdma_enabled == 0) {
164 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
165 " RDMA is not enabled.\n",
166 netdev->name);
167 return NOTIFY_OK;
168 }
169 /* we have ifa->ifa_address/mask here if we need it */
170 switch (event) {
171 case NETDEV_DOWN:
172 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
173 nes_write_indexed(nesdev,
174 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
175
176 nes_manage_arp_cache(netdev, netdev->dev_addr,
177 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
178 nesvnic->local_ipaddr = 0;
179 return NOTIFY_OK;
180 break;
181 case NETDEV_UP:
182 nes_debug(NES_DBG_NETDEV, "event:UP\n");
183
184 if (nesvnic->local_ipaddr != 0) {
185 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
186 return NOTIFY_OK;
187 }
188 /* Add the address to the IP table */
189 nesvnic->local_ipaddr = ifa->ifa_address;
190
191 nes_write_indexed(nesdev,
192 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
193 ntohl(ifa->ifa_address));
194 nes_manage_arp_cache(netdev, netdev->dev_addr,
195 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
196 return NOTIFY_OK;
197 break;
198 default:
199 break;
200 }
201 }
202 }
203
204 return NOTIFY_DONE;
205 }
206
207
208 /**
209 * nes_net_event
210 */
211 static int nes_net_event(struct notifier_block *notifier,
212 unsigned long event, void *ptr)
213 {
214 struct neighbour *neigh = ptr;
215 struct nes_device *nesdev;
216 struct net_device *netdev;
217 struct nes_vnic *nesvnic;
218
219 switch (event) {
220 case NETEVENT_NEIGH_UPDATE:
221 list_for_each_entry(nesdev, &nes_dev_list, list) {
222 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
223 netdev = nesdev->netdev[0];
224 nesvnic = netdev_priv(netdev);
225 if (netdev == neigh->dev) {
226 if (nesvnic->rdma_enabled == 0) {
227 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
228 netdev->name);
229 } else {
230 if (neigh->nud_state & NUD_VALID) {
231 nes_manage_arp_cache(neigh->dev, neigh->ha,
232 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
233 } else {
234 nes_manage_arp_cache(neigh->dev, neigh->ha,
235 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
236 }
237 }
238 return NOTIFY_OK;
239 }
240 }
241 break;
242 default:
243 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
244 break;
245 }
246
247 return NOTIFY_DONE;
248 }
249
250
251 /**
252 * nes_add_ref
253 */
254 void nes_add_ref(struct ib_qp *ibqp)
255 {
256 struct nes_qp *nesqp;
257
258 nesqp = to_nesqp(ibqp);
259 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
260 ibqp->qp_num, atomic_read(&nesqp->refcount));
261 atomic_inc(&nesqp->refcount);
262 }
263
264 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
265 {
266 unsigned long flags;
267 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
268 struct nes_adapter *nesadapter = nesdev->nesadapter;
269 u32 qp_id;
270
271 atomic_inc(&qps_destroyed);
272
273 /* Free the control structures */
274
275 qp_id = nesqp->hwqp.qp_id;
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 kfree(nesqp->allocated_buffer);
292
293 }
294
295 /**
296 * nes_rem_ref
297 */
298 void nes_rem_ref(struct ib_qp *ibqp)
299 {
300 u64 u64temp;
301 struct nes_qp *nesqp;
302 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
303 struct nes_device *nesdev = nesvnic->nesdev;
304 struct nes_adapter *nesadapter = nesdev->nesadapter;
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 __FUNCTION__, ibqp->qp_num, nesqp->last_aeq);
314 BUG();
315 }
316
317 if (atomic_dec_and_test(&nesqp->refcount)) {
318 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
319
320 /* Destroy the QP */
321 cqp_request = nes_get_cqp_request(nesdev);
322 if (cqp_request == NULL) {
323 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
324 return;
325 }
326 cqp_request->waiting = 0;
327 cqp_request->callback = 1;
328 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
329 cqp_request->cqp_callback_pointer = nesqp;
330 cqp_wqe = &cqp_request->cqp_wqe;
331
332 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
333 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
334
335 if (nesqp->hte_added) {
336 opcode |= NES_CQP_QP_DEL_HTE;
337 nesqp->hte_added = 0;
338 }
339 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
341 u64temp = (u64)nesqp->nesqp_context_pbase;
342 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
343 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
344 }
345 }
346
347
348 /**
349 * nes_get_qp
350 */
351 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
352 {
353 struct nes_vnic *nesvnic = to_nesvnic(device);
354 struct nes_device *nesdev = nesvnic->nesdev;
355 struct nes_adapter *nesadapter = nesdev->nesadapter;
356
357 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
358 return NULL;
359
360 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
361 }
362
363
364 /**
365 * nes_print_macaddr
366 */
367 static void nes_print_macaddr(struct net_device *netdev)
368 {
369 nes_debug(NES_DBG_INIT, "%s: MAC %02X:%02X:%02X:%02X:%02X:%02X, IRQ %u\n",
370 netdev->name,
371 netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
372 netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5],
373 netdev->irq);
374 }
375
376
377 /**
378 * nes_interrupt - handle interrupts
379 */
380 static irqreturn_t nes_interrupt(int irq, void *dev_id)
381 {
382 struct nes_device *nesdev = (struct nes_device *)dev_id;
383 int handled = 0;
384 u32 int_mask;
385 u32 int_req;
386 u32 int_stat;
387 u32 intf_int_stat;
388 u32 timer_stat;
389
390 if (nesdev->msi_enabled) {
391 /* No need to read the interrupt pending register if msi is enabled */
392 handled = 1;
393 } else {
394 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
395 /* Master interrupt enable provides synchronization for kicking off bottom half
396 when interrupt sharing is going on */
397 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
398 if (int_mask & 0x80000000) {
399 /* Check interrupt status to see if this might be ours */
400 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
401 int_req = nesdev->int_req;
402 if (int_stat&int_req) {
403 /* if interesting CEQ or AEQ is pending, claim the interrupt */
404 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
405 handled = 1;
406 } else {
407 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
408 /* Timer might be running but might be for another function */
409 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
410 if ((timer_stat & nesdev->timer_int_req) != 0) {
411 handled = 1;
412 }
413 }
414 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
415 (handled == 0)) {
416 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
417 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
418 handled = 1;
419 }
420 }
421 }
422 if (handled) {
423 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
424 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
425 /* Save off the status to save an additional read */
426 nesdev->int_stat = int_stat;
427 nesdev->napi_isr_ran = 1;
428 }
429 }
430 }
431 } else {
432 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
433 }
434 }
435
436 if (handled) {
437
438 if (nes_napi_isr(nesdev) == 0) {
439 tasklet_schedule(&nesdev->dpc_tasklet);
440
441 }
442 return IRQ_HANDLED;
443 } else {
444 return IRQ_NONE;
445 }
446 }
447
448
449 /**
450 * nes_probe - Device initialization
451 */
452 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
453 {
454 struct net_device *netdev = NULL;
455 struct nes_device *nesdev = NULL;
456 int ret = 0;
457 struct nes_vnic *nesvnic = NULL;
458 void __iomem *mmio_regs = NULL;
459 u8 hw_rev;
460
461 assert(pcidev != NULL);
462 assert(ent != NULL);
463
464 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
465 DRV_VERSION, pci_name(pcidev));
466
467 ret = pci_enable_device(pcidev);
468 if (ret) {
469 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
470 goto bail0;
471 }
472
473 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
474 (long unsigned int)pci_resource_start(pcidev, BAR_0),
475 (long unsigned int)pci_resource_len(pcidev, BAR_0));
476 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
477 (long unsigned int)pci_resource_start(pcidev, BAR_1),
478 (long unsigned int)pci_resource_len(pcidev, BAR_1));
479
480 /* Make sure PCI base addr are MMIO */
481 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
482 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
483 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
484 ret = -ENODEV;
485 goto bail1;
486 }
487
488 /* Reserve PCI I/O and memory resources */
489 ret = pci_request_regions(pcidev, DRV_NAME);
490 if (ret) {
491 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
492 goto bail1;
493 }
494
495 if ((sizeof(dma_addr_t) > 4)) {
496 ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK);
497 if (ret < 0) {
498 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
499 goto bail2;
500 }
501 ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK);
502 if (ret) {
503 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
504 goto bail2;
505 }
506 } else {
507 ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
508 if (ret < 0) {
509 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
510 goto bail2;
511 }
512 ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK);
513 if (ret) {
514 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
515 goto bail2;
516 }
517 }
518
519 pci_set_master(pcidev);
520
521 /* Allocate hardware structure */
522 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
523 if (!nesdev) {
524 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
525 ret = -ENOMEM;
526 goto bail2;
527 }
528
529 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
530 nesdev->pcidev = pcidev;
531 pci_set_drvdata(pcidev, nesdev);
532
533 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
534 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
535
536 spin_lock_init(&nesdev->indexed_regs_lock);
537
538 /* Remap the PCI registers in adapter BAR0 to kernel VA space */
539 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
540 if (mmio_regs == NULL) {
541 printk(KERN_ERR PFX "Unable to remap BAR0\n");
542 ret = -EIO;
543 goto bail3;
544 }
545 nesdev->regs = mmio_regs;
546 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
547
548 /* Ensure interrupts are disabled */
549 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
550
551 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
552 if (!pci_enable_msi(nesdev->pcidev)) {
553 nesdev->msi_enabled = 1;
554 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
555 pci_name(pcidev));
556 } else {
557 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
558 pci_name(pcidev));
559 }
560 } else {
561 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
562 pci_name(pcidev));
563 }
564
565 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
566 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
567
568 /* Init the adapter */
569 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
570 if (!nesdev->nesadapter) {
571 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
572 ret = -ENOMEM;
573 goto bail5;
574 }
575 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
576
577 /* nesdev->base_doorbell_index =
578 nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
579 nesdev->base_doorbell_index = 1;
580 nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
581 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
582
583 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
584
585 /* bring up the Control QP */
586 if (nes_init_cqp(nesdev)) {
587 ret = -ENODEV;
588 goto bail6;
589 }
590
591 /* Arm the CCQ */
592 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
593 PCI_FUNC(nesdev->pcidev->devfn));
594 nes_read32(nesdev->regs+NES_CQE_ALLOC);
595
596 /* Enable the interrupts */
597 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
598 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
599 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
600 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
601 }
602
603 /* TODO: This really should be the first driver to load, not function 0 */
604 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
605 /* pick up PCI and critical errors if the first driver to load */
606 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
607 nesdev->int_req |= NES_INT_INTF;
608 } else {
609 nesdev->intf_int_req = 0;
610 }
611 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
612 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
613 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
614 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
615 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
616
617 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
618
619 /* deal with both periodic and one_shot */
620 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
621 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
622 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
623 PCI_FUNC(nesdev->pcidev->devfn),
624 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
625
626 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
627
628 list_add_tail(&nesdev->list, &nes_dev_list);
629
630 /* Request an interrupt line for the driver */
631 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
632 if (ret) {
633 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
634 pci_name(pcidev), pcidev->irq);
635 goto bail65;
636 }
637
638 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
639
640 if (nes_notifiers_registered == 0) {
641 register_inetaddr_notifier(&nes_inetaddr_notifier);
642 register_netevent_notifier(&nes_net_notifier);
643 }
644 nes_notifiers_registered++;
645
646 /* Initialize network devices */
647 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
648 goto bail7;
649 }
650
651 /* Register network device */
652 ret = register_netdev(netdev);
653 if (ret) {
654 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
655 nes_netdev_destroy(netdev);
656 goto bail7;
657 }
658
659 nes_print_macaddr(netdev);
660 /* create a CM core for this netdev */
661 nesvnic = netdev_priv(netdev);
662
663 nesdev->netdev_count++;
664 nesdev->nesadapter->netdev_count++;
665
666
667 printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
668 pci_name(pcidev));
669 return 0;
670
671 bail7:
672 printk(KERN_ERR PFX "bail7\n");
673 while (nesdev->netdev_count > 0) {
674 nesdev->netdev_count--;
675 nesdev->nesadapter->netdev_count--;
676
677 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
678 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
679 }
680
681 nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
682 nesdev->netdev_count, nesdev->nesadapter->netdev_count);
683
684 nes_notifiers_registered--;
685 if (nes_notifiers_registered == 0) {
686 unregister_netevent_notifier(&nes_net_notifier);
687 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
688 }
689
690 list_del(&nesdev->list);
691 nes_destroy_cqp(nesdev);
692
693 bail65:
694 printk(KERN_ERR PFX "bail65\n");
695 free_irq(pcidev->irq, nesdev);
696 if (nesdev->msi_enabled) {
697 pci_disable_msi(pcidev);
698 }
699 bail6:
700 printk(KERN_ERR PFX "bail6\n");
701 tasklet_kill(&nesdev->dpc_tasklet);
702 /* Deallocate the Adapter Structure */
703 nes_destroy_adapter(nesdev->nesadapter);
704
705 bail5:
706 printk(KERN_ERR PFX "bail5\n");
707 iounmap(nesdev->regs);
708
709 bail3:
710 printk(KERN_ERR PFX "bail3\n");
711 kfree(nesdev);
712
713 bail2:
714 pci_release_regions(pcidev);
715
716 bail1:
717 pci_disable_device(pcidev);
718
719 bail0:
720 return ret;
721 }
722
723
724 /**
725 * nes_remove - unload from kernel
726 */
727 static void __devexit nes_remove(struct pci_dev *pcidev)
728 {
729 struct nes_device *nesdev = pci_get_drvdata(pcidev);
730 struct net_device *netdev;
731 int netdev_index = 0;
732
733 if (nesdev->netdev_count) {
734 netdev = nesdev->netdev[netdev_index];
735 if (netdev) {
736 netif_stop_queue(netdev);
737 unregister_netdev(netdev);
738 nes_netdev_destroy(netdev);
739
740 nesdev->netdev[netdev_index] = NULL;
741 nesdev->netdev_count--;
742 nesdev->nesadapter->netdev_count--;
743 }
744 }
745
746 nes_notifiers_registered--;
747 if (nes_notifiers_registered == 0) {
748 unregister_netevent_notifier(&nes_net_notifier);
749 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
750 }
751
752 list_del(&nesdev->list);
753 nes_destroy_cqp(nesdev);
754
755 free_irq(pcidev->irq, nesdev);
756 tasklet_kill(&nesdev->dpc_tasklet);
757
758 /* Deallocate the Adapter Structure */
759 nes_destroy_adapter(nesdev->nesadapter);
760
761 if (nesdev->msi_enabled) {
762 pci_disable_msi(pcidev);
763 }
764
765 iounmap(nesdev->regs);
766 kfree(nesdev);
767
768 /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
769 pci_release_regions(pcidev);
770 pci_disable_device(pcidev);
771 pci_set_drvdata(pcidev, NULL);
772 }
773
774
775 static struct pci_driver nes_pci_driver = {
776 .name = DRV_NAME,
777 .id_table = nes_pci_table,
778 .probe = nes_probe,
779 .remove = __devexit_p(nes_remove),
780 };
781
782 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
783 {
784 unsigned int devfn = 0xffffffff;
785 unsigned char bus_number = 0xff;
786 unsigned int i = 0;
787 struct nes_device *nesdev;
788
789 list_for_each_entry(nesdev, &nes_dev_list, list) {
790 if (i == ee_flsh_adapter) {
791 devfn = nesdev->nesadapter->devfn;
792 bus_number = nesdev->nesadapter->bus_number;
793 break;
794 }
795 i++;
796 }
797
798 return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
799 }
800
801 static ssize_t nes_store_adapter(struct device_driver *ddp,
802 const char *buf, size_t count)
803 {
804 char *p = (char *)buf;
805
806 ee_flsh_adapter = simple_strtoul(p, &p, 10);
807 return strnlen(buf, count);
808 }
809
810 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
811 {
812 u32 eeprom_cmd = 0xdead;
813 u32 i = 0;
814 struct nes_device *nesdev;
815
816 list_for_each_entry(nesdev, &nes_dev_list, list) {
817 if (i == ee_flsh_adapter) {
818 eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
819 break;
820 }
821 i++;
822 }
823 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
824 }
825
826 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
827 const char *buf, size_t count)
828 {
829 char *p = (char *)buf;
830 u32 val;
831 u32 i = 0;
832 struct nes_device *nesdev;
833
834 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
835 val = simple_strtoul(p, &p, 16);
836 list_for_each_entry(nesdev, &nes_dev_list, list) {
837 if (i == ee_flsh_adapter) {
838 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
839 break;
840 }
841 i++;
842 }
843 }
844 return strnlen(buf, count);
845 }
846
847 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
848 {
849 u32 eeprom_data = 0xdead;
850 u32 i = 0;
851 struct nes_device *nesdev;
852
853 list_for_each_entry(nesdev, &nes_dev_list, list) {
854 if (i == ee_flsh_adapter) {
855 eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
856 break;
857 }
858 i++;
859 }
860
861 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
862 }
863
864 static ssize_t nes_store_ee_data(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_DATA, val);
877 break;
878 }
879 i++;
880 }
881 }
882 return strnlen(buf, count);
883 }
884
885 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
886 {
887 u32 flash_cmd = 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 flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
894 break;
895 }
896 i++;
897 }
898
899 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
900 }
901
902 static ssize_t nes_store_flash_cmd(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_FLASH_COMMAND, val);
915 break;
916 }
917 i++;
918 }
919 }
920 return strnlen(buf, count);
921 }
922
923 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
924 {
925 u32 flash_data = 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_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
932 break;
933 }
934 i++;
935 }
936
937 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
938 }
939
940 static ssize_t nes_store_flash_data(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_DATA, val);
953 break;
954 }
955 i++;
956 }
957 }
958 return strnlen(buf, count);
959 }
960
961 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
962 {
963 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
964 }
965
966 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
967 const char *buf, size_t count)
968 {
969 char *p = (char *)buf;
970
971 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
972 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
973
974 return strnlen(buf, count);
975 }
976
977 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
978 {
979 u32 nonidx_data = 0xdead;
980 u32 i = 0;
981 struct nes_device *nesdev;
982
983 list_for_each_entry(nesdev, &nes_dev_list, list) {
984 if (i == ee_flsh_adapter) {
985 nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
986 break;
987 }
988 i++;
989 }
990
991 return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
992 }
993
994 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
995 const char *buf, size_t count)
996 {
997 char *p = (char *)buf;
998 u32 val;
999 u32 i = 0;
1000 struct nes_device *nesdev;
1001
1002 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1003 val = simple_strtoul(p, &p, 16);
1004 list_for_each_entry(nesdev, &nes_dev_list, list) {
1005 if (i == ee_flsh_adapter) {
1006 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1007 break;
1008 }
1009 i++;
1010 }
1011 }
1012 return strnlen(buf, count);
1013 }
1014
1015 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1016 {
1017 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1018 }
1019
1020 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1021 const char *buf, size_t count)
1022 {
1023 char *p = (char *)buf;
1024
1025 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1026 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1027
1028 return strnlen(buf, count);
1029 }
1030
1031 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1032 {
1033 u32 idx_data = 0xdead;
1034 u32 i = 0;
1035 struct nes_device *nesdev;
1036
1037 list_for_each_entry(nesdev, &nes_dev_list, list) {
1038 if (i == ee_flsh_adapter) {
1039 idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1040 break;
1041 }
1042 i++;
1043 }
1044
1045 return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1046 }
1047
1048 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1049 const char *buf, size_t count)
1050 {
1051 char *p = (char *)buf;
1052 u32 val;
1053 u32 i = 0;
1054 struct nes_device *nesdev;
1055
1056 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1057 val = simple_strtoul(p, &p, 16);
1058 list_for_each_entry(nesdev, &nes_dev_list, list) {
1059 if (i == ee_flsh_adapter) {
1060 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1061 break;
1062 }
1063 i++;
1064 }
1065 }
1066 return strnlen(buf, count);
1067 }
1068
1069 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1070 nes_show_adapter, nes_store_adapter);
1071 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1072 nes_show_ee_cmd, nes_store_ee_cmd);
1073 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1074 nes_show_ee_data, nes_store_ee_data);
1075 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1076 nes_show_flash_cmd, nes_store_flash_cmd);
1077 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1078 nes_show_flash_data, nes_store_flash_data);
1079 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1080 nes_show_nonidx_addr, nes_store_nonidx_addr);
1081 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1082 nes_show_nonidx_data, nes_store_nonidx_data);
1083 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1084 nes_show_idx_addr, nes_store_idx_addr);
1085 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1086 nes_show_idx_data, nes_store_idx_data);
1087
1088 static int nes_create_driver_sysfs(struct pci_driver *drv)
1089 {
1090 int error;
1091 error = driver_create_file(&drv->driver, &driver_attr_adapter);
1092 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1093 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1094 error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1095 error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1096 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1097 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1098 error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1099 error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1100 return error;
1101 }
1102
1103 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1104 {
1105 driver_remove_file(&drv->driver, &driver_attr_adapter);
1106 driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1107 driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1108 driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1109 driver_remove_file(&drv->driver, &driver_attr_flash_data);
1110 driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1111 driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1112 driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1113 driver_remove_file(&drv->driver, &driver_attr_idx_data);
1114 }
1115
1116 /**
1117 * nes_init_module - module initialization entry point
1118 */
1119 static int __init nes_init_module(void)
1120 {
1121 int retval;
1122 int retval1;
1123
1124 retval = nes_cm_start();
1125 if (retval) {
1126 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1127 return retval;
1128 }
1129 retval = pci_register_driver(&nes_pci_driver);
1130 if (retval >= 0) {
1131 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1132 if (retval1 < 0)
1133 printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1134 }
1135 return retval;
1136 }
1137
1138
1139 /**
1140 * nes_exit_module - module unload entry point
1141 */
1142 static void __exit nes_exit_module(void)
1143 {
1144 nes_cm_stop();
1145 nes_remove_driver_sysfs(&nes_pci_driver);
1146
1147 pci_unregister_driver(&nes_pci_driver);
1148 }
1149
1150
1151 module_init(nes_init_module);
1152 module_exit(nes_exit_module);
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