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Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into...
[deliverable/linux.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 LIST_HEAD(nes_adapter_list);
95 static LIST_HEAD(nes_dev_list);
96
97 atomic_t qps_destroyed;
98
99 static unsigned int ee_flsh_adapter;
100 static unsigned int sysfs_nonidx_addr;
101 static unsigned int sysfs_idx_addr;
102
103 static struct pci_device_id nes_pci_table[] = {
104 {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
105 {0}
106 };
107
108 MODULE_DEVICE_TABLE(pci, nes_pci_table);
109
110 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
111 static int nes_net_event(struct notifier_block *, unsigned long, void *);
112 static int nes_notifiers_registered;
113
114
115 static struct notifier_block nes_inetaddr_notifier = {
116 .notifier_call = nes_inetaddr_event
117 };
118
119 static struct notifier_block nes_net_notifier = {
120 .notifier_call = nes_net_event
121 };
122
123
124
125
126 /**
127 * nes_inetaddr_event
128 */
129 static int nes_inetaddr_event(struct notifier_block *notifier,
130 unsigned long event, void *ptr)
131 {
132 struct in_ifaddr *ifa = ptr;
133 struct net_device *event_netdev = ifa->ifa_dev->dev;
134 struct nes_device *nesdev;
135 struct net_device *netdev;
136 struct nes_vnic *nesvnic;
137 unsigned int addr;
138 unsigned int mask;
139
140 addr = ntohl(ifa->ifa_address);
141 mask = ntohl(ifa->ifa_mask);
142 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address " NIPQUAD_FMT
143 ", netmask " NIPQUAD_FMT ".\n",
144 HIPQUAD(addr), HIPQUAD(mask));
145 list_for_each_entry(nesdev, &nes_dev_list, list) {
146 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
147 nesdev, nesdev->netdev[0]->name);
148 netdev = nesdev->netdev[0];
149 nesvnic = netdev_priv(netdev);
150 if (netdev == event_netdev) {
151 if (nesvnic->rdma_enabled == 0) {
152 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
153 " RDMA is not enabled.\n",
154 netdev->name);
155 return NOTIFY_OK;
156 }
157 /* we have ifa->ifa_address/mask here if we need it */
158 switch (event) {
159 case NETDEV_DOWN:
160 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
161 nes_write_indexed(nesdev,
162 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
163
164 nes_manage_arp_cache(netdev, netdev->dev_addr,
165 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
166 nesvnic->local_ipaddr = 0;
167 return NOTIFY_OK;
168 break;
169 case NETDEV_UP:
170 nes_debug(NES_DBG_NETDEV, "event:UP\n");
171
172 if (nesvnic->local_ipaddr != 0) {
173 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
174 return NOTIFY_OK;
175 }
176 /* Add the address to the IP table */
177 nesvnic->local_ipaddr = ifa->ifa_address;
178
179 nes_write_indexed(nesdev,
180 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
181 ntohl(ifa->ifa_address));
182 nes_manage_arp_cache(netdev, netdev->dev_addr,
183 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
184 return NOTIFY_OK;
185 break;
186 default:
187 break;
188 }
189 }
190 }
191
192 return NOTIFY_DONE;
193 }
194
195
196 /**
197 * nes_net_event
198 */
199 static int nes_net_event(struct notifier_block *notifier,
200 unsigned long event, void *ptr)
201 {
202 struct neighbour *neigh = ptr;
203 struct nes_device *nesdev;
204 struct net_device *netdev;
205 struct nes_vnic *nesvnic;
206
207 switch (event) {
208 case NETEVENT_NEIGH_UPDATE:
209 list_for_each_entry(nesdev, &nes_dev_list, list) {
210 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
211 netdev = nesdev->netdev[0];
212 nesvnic = netdev_priv(netdev);
213 if (netdev == neigh->dev) {
214 if (nesvnic->rdma_enabled == 0) {
215 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
216 netdev->name);
217 } else {
218 if (neigh->nud_state & NUD_VALID) {
219 nes_manage_arp_cache(neigh->dev, neigh->ha,
220 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
221 } else {
222 nes_manage_arp_cache(neigh->dev, neigh->ha,
223 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
224 }
225 }
226 return NOTIFY_OK;
227 }
228 }
229 break;
230 default:
231 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
232 break;
233 }
234
235 return NOTIFY_DONE;
236 }
237
238
239 /**
240 * nes_add_ref
241 */
242 void nes_add_ref(struct ib_qp *ibqp)
243 {
244 struct nes_qp *nesqp;
245
246 nesqp = to_nesqp(ibqp);
247 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
248 ibqp->qp_num, atomic_read(&nesqp->refcount));
249 atomic_inc(&nesqp->refcount);
250 }
251
252 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
253 {
254 unsigned long flags;
255 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
256 struct nes_adapter *nesadapter = nesdev->nesadapter;
257 u32 qp_id;
258
259 atomic_inc(&qps_destroyed);
260
261 /* Free the control structures */
262
263 qp_id = nesqp->hwqp.qp_id;
264 if (nesqp->pbl_vbase) {
265 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
266 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
267 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
268 nesadapter->free_256pbl++;
269 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
270 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
271 nesqp->pbl_vbase = NULL;
272
273 } else {
274 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
275 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
276 }
277 nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
278
279 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
280 kfree(nesqp->allocated_buffer);
281
282 }
283
284 /**
285 * nes_rem_ref
286 */
287 void nes_rem_ref(struct ib_qp *ibqp)
288 {
289 u64 u64temp;
290 struct nes_qp *nesqp;
291 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
292 struct nes_device *nesdev = nesvnic->nesdev;
293 struct nes_hw_cqp_wqe *cqp_wqe;
294 struct nes_cqp_request *cqp_request;
295 u32 opcode;
296
297 nesqp = to_nesqp(ibqp);
298
299 if (atomic_read(&nesqp->refcount) == 0) {
300 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
301 __func__, ibqp->qp_num, nesqp->last_aeq);
302 BUG();
303 }
304
305 if (atomic_dec_and_test(&nesqp->refcount)) {
306 /* Destroy the QP */
307 cqp_request = nes_get_cqp_request(nesdev);
308 if (cqp_request == NULL) {
309 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
310 return;
311 }
312 cqp_request->waiting = 0;
313 cqp_request->callback = 1;
314 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
315 cqp_request->cqp_callback_pointer = nesqp;
316 cqp_wqe = &cqp_request->cqp_wqe;
317
318 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
319 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
320
321 if (nesqp->hte_added) {
322 opcode |= NES_CQP_QP_DEL_HTE;
323 nesqp->hte_added = 0;
324 }
325 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
326 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
327 u64temp = (u64)nesqp->nesqp_context_pbase;
328 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
329 nes_post_cqp_request(nesdev, cqp_request);
330 }
331 }
332
333
334 /**
335 * nes_get_qp
336 */
337 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
338 {
339 struct nes_vnic *nesvnic = to_nesvnic(device);
340 struct nes_device *nesdev = nesvnic->nesdev;
341 struct nes_adapter *nesadapter = nesdev->nesadapter;
342
343 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
344 return NULL;
345
346 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
347 }
348
349
350 /**
351 * nes_print_macaddr
352 */
353 static void nes_print_macaddr(struct net_device *netdev)
354 {
355 DECLARE_MAC_BUF(mac);
356
357 nes_debug(NES_DBG_INIT, "%s: %s, IRQ %u\n",
358 netdev->name, print_mac(mac, netdev->dev_addr), netdev->irq);
359 }
360
361 /**
362 * nes_interrupt - handle interrupts
363 */
364 static irqreturn_t nes_interrupt(int irq, void *dev_id)
365 {
366 struct nes_device *nesdev = (struct nes_device *)dev_id;
367 int handled = 0;
368 u32 int_mask;
369 u32 int_req;
370 u32 int_stat;
371 u32 intf_int_stat;
372 u32 timer_stat;
373
374 if (nesdev->msi_enabled) {
375 /* No need to read the interrupt pending register if msi is enabled */
376 handled = 1;
377 } else {
378 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
379 /* Master interrupt enable provides synchronization for kicking off bottom half
380 when interrupt sharing is going on */
381 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
382 if (int_mask & 0x80000000) {
383 /* Check interrupt status to see if this might be ours */
384 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
385 int_req = nesdev->int_req;
386 if (int_stat&int_req) {
387 /* if interesting CEQ or AEQ is pending, claim the interrupt */
388 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
389 handled = 1;
390 } else {
391 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
392 /* Timer might be running but might be for another function */
393 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
394 if ((timer_stat & nesdev->timer_int_req) != 0) {
395 handled = 1;
396 }
397 }
398 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
399 (handled == 0)) {
400 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
401 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
402 handled = 1;
403 }
404 }
405 }
406 if (handled) {
407 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
408 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
409 /* Save off the status to save an additional read */
410 nesdev->int_stat = int_stat;
411 nesdev->napi_isr_ran = 1;
412 }
413 }
414 }
415 } else {
416 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
417 }
418 }
419
420 if (handled) {
421
422 if (nes_napi_isr(nesdev) == 0) {
423 tasklet_schedule(&nesdev->dpc_tasklet);
424
425 }
426 return IRQ_HANDLED;
427 } else {
428 return IRQ_NONE;
429 }
430 }
431
432
433 /**
434 * nes_probe - Device initialization
435 */
436 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
437 {
438 struct net_device *netdev = NULL;
439 struct nes_device *nesdev = NULL;
440 int ret = 0;
441 struct nes_vnic *nesvnic = NULL;
442 void __iomem *mmio_regs = NULL;
443 u8 hw_rev;
444
445 assert(pcidev != NULL);
446 assert(ent != NULL);
447
448 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
449 DRV_VERSION, pci_name(pcidev));
450
451 ret = pci_enable_device(pcidev);
452 if (ret) {
453 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
454 goto bail0;
455 }
456
457 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
458 (long unsigned int)pci_resource_start(pcidev, BAR_0),
459 (long unsigned int)pci_resource_len(pcidev, BAR_0));
460 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
461 (long unsigned int)pci_resource_start(pcidev, BAR_1),
462 (long unsigned int)pci_resource_len(pcidev, BAR_1));
463
464 /* Make sure PCI base addr are MMIO */
465 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
466 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
467 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
468 ret = -ENODEV;
469 goto bail1;
470 }
471
472 /* Reserve PCI I/O and memory resources */
473 ret = pci_request_regions(pcidev, DRV_NAME);
474 if (ret) {
475 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
476 goto bail1;
477 }
478
479 if ((sizeof(dma_addr_t) > 4)) {
480 ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK);
481 if (ret < 0) {
482 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
483 goto bail2;
484 }
485 ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK);
486 if (ret) {
487 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
488 goto bail2;
489 }
490 } else {
491 ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
492 if (ret < 0) {
493 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
494 goto bail2;
495 }
496 ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK);
497 if (ret) {
498 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
499 goto bail2;
500 }
501 }
502
503 pci_set_master(pcidev);
504
505 /* Allocate hardware structure */
506 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
507 if (!nesdev) {
508 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
509 ret = -ENOMEM;
510 goto bail2;
511 }
512
513 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
514 nesdev->pcidev = pcidev;
515 pci_set_drvdata(pcidev, nesdev);
516
517 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
518 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
519
520 spin_lock_init(&nesdev->indexed_regs_lock);
521
522 /* Remap the PCI registers in adapter BAR0 to kernel VA space */
523 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
524 if (mmio_regs == NULL) {
525 printk(KERN_ERR PFX "Unable to remap BAR0\n");
526 ret = -EIO;
527 goto bail3;
528 }
529 nesdev->regs = mmio_regs;
530 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
531
532 /* Ensure interrupts are disabled */
533 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
534
535 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
536 if (!pci_enable_msi(nesdev->pcidev)) {
537 nesdev->msi_enabled = 1;
538 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
539 pci_name(pcidev));
540 } else {
541 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
542 pci_name(pcidev));
543 }
544 } else {
545 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
546 pci_name(pcidev));
547 }
548
549 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
550 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
551
552 /* Init the adapter */
553 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
554 if (!nesdev->nesadapter) {
555 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
556 ret = -ENOMEM;
557 goto bail5;
558 }
559 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
560
561 /* nesdev->base_doorbell_index =
562 nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
563 nesdev->base_doorbell_index = 1;
564 nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
565 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
566
567 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
568
569 /* bring up the Control QP */
570 if (nes_init_cqp(nesdev)) {
571 ret = -ENODEV;
572 goto bail6;
573 }
574
575 /* Arm the CCQ */
576 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
577 PCI_FUNC(nesdev->pcidev->devfn));
578 nes_read32(nesdev->regs+NES_CQE_ALLOC);
579
580 /* Enable the interrupts */
581 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
582 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
583 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
584 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
585 }
586
587 /* TODO: This really should be the first driver to load, not function 0 */
588 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
589 /* pick up PCI and critical errors if the first driver to load */
590 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
591 nesdev->int_req |= NES_INT_INTF;
592 } else {
593 nesdev->intf_int_req = 0;
594 }
595 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
596 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
597 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
598 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
599 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
600
601 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
602
603 /* deal with both periodic and one_shot */
604 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
605 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
606 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
607 PCI_FUNC(nesdev->pcidev->devfn),
608 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
609
610 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
611
612 list_add_tail(&nesdev->list, &nes_dev_list);
613
614 /* Request an interrupt line for the driver */
615 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
616 if (ret) {
617 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
618 pci_name(pcidev), pcidev->irq);
619 goto bail65;
620 }
621
622 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
623
624 if (nes_notifiers_registered == 0) {
625 register_inetaddr_notifier(&nes_inetaddr_notifier);
626 register_netevent_notifier(&nes_net_notifier);
627 }
628 nes_notifiers_registered++;
629
630 /* Initialize network devices */
631 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
632 goto bail7;
633 }
634
635 /* Register network device */
636 ret = register_netdev(netdev);
637 if (ret) {
638 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
639 nes_netdev_destroy(netdev);
640 goto bail7;
641 }
642
643 nes_print_macaddr(netdev);
644 /* create a CM core for this netdev */
645 nesvnic = netdev_priv(netdev);
646
647 nesdev->netdev_count++;
648 nesdev->nesadapter->netdev_count++;
649
650
651 printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
652 pci_name(pcidev));
653 return 0;
654
655 bail7:
656 printk(KERN_ERR PFX "bail7\n");
657 while (nesdev->netdev_count > 0) {
658 nesdev->netdev_count--;
659 nesdev->nesadapter->netdev_count--;
660
661 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
662 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
663 }
664
665 nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
666 nesdev->netdev_count, nesdev->nesadapter->netdev_count);
667
668 nes_notifiers_registered--;
669 if (nes_notifiers_registered == 0) {
670 unregister_netevent_notifier(&nes_net_notifier);
671 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
672 }
673
674 list_del(&nesdev->list);
675 nes_destroy_cqp(nesdev);
676
677 bail65:
678 printk(KERN_ERR PFX "bail65\n");
679 free_irq(pcidev->irq, nesdev);
680 if (nesdev->msi_enabled) {
681 pci_disable_msi(pcidev);
682 }
683 bail6:
684 printk(KERN_ERR PFX "bail6\n");
685 tasklet_kill(&nesdev->dpc_tasklet);
686 /* Deallocate the Adapter Structure */
687 nes_destroy_adapter(nesdev->nesadapter);
688
689 bail5:
690 printk(KERN_ERR PFX "bail5\n");
691 iounmap(nesdev->regs);
692
693 bail3:
694 printk(KERN_ERR PFX "bail3\n");
695 kfree(nesdev);
696
697 bail2:
698 pci_release_regions(pcidev);
699
700 bail1:
701 pci_disable_device(pcidev);
702
703 bail0:
704 return ret;
705 }
706
707
708 /**
709 * nes_remove - unload from kernel
710 */
711 static void __devexit nes_remove(struct pci_dev *pcidev)
712 {
713 struct nes_device *nesdev = pci_get_drvdata(pcidev);
714 struct net_device *netdev;
715 int netdev_index = 0;
716
717 if (nesdev->netdev_count) {
718 netdev = nesdev->netdev[netdev_index];
719 if (netdev) {
720 netif_stop_queue(netdev);
721 unregister_netdev(netdev);
722 nes_netdev_destroy(netdev);
723
724 nesdev->netdev[netdev_index] = NULL;
725 nesdev->netdev_count--;
726 nesdev->nesadapter->netdev_count--;
727 }
728 }
729
730 nes_notifiers_registered--;
731 if (nes_notifiers_registered == 0) {
732 unregister_netevent_notifier(&nes_net_notifier);
733 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
734 }
735
736 list_del(&nesdev->list);
737 nes_destroy_cqp(nesdev);
738
739 free_irq(pcidev->irq, nesdev);
740 tasklet_kill(&nesdev->dpc_tasklet);
741
742 /* Deallocate the Adapter Structure */
743 nes_destroy_adapter(nesdev->nesadapter);
744
745 if (nesdev->msi_enabled) {
746 pci_disable_msi(pcidev);
747 }
748
749 iounmap(nesdev->regs);
750 kfree(nesdev);
751
752 /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
753 pci_release_regions(pcidev);
754 pci_disable_device(pcidev);
755 pci_set_drvdata(pcidev, NULL);
756 }
757
758
759 static struct pci_driver nes_pci_driver = {
760 .name = DRV_NAME,
761 .id_table = nes_pci_table,
762 .probe = nes_probe,
763 .remove = __devexit_p(nes_remove),
764 };
765
766 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
767 {
768 unsigned int devfn = 0xffffffff;
769 unsigned char bus_number = 0xff;
770 unsigned int i = 0;
771 struct nes_device *nesdev;
772
773 list_for_each_entry(nesdev, &nes_dev_list, list) {
774 if (i == ee_flsh_adapter) {
775 devfn = nesdev->nesadapter->devfn;
776 bus_number = nesdev->nesadapter->bus_number;
777 break;
778 }
779 i++;
780 }
781
782 return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
783 }
784
785 static ssize_t nes_store_adapter(struct device_driver *ddp,
786 const char *buf, size_t count)
787 {
788 char *p = (char *)buf;
789
790 ee_flsh_adapter = simple_strtoul(p, &p, 10);
791 return strnlen(buf, count);
792 }
793
794 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
795 {
796 u32 eeprom_cmd = 0xdead;
797 u32 i = 0;
798 struct nes_device *nesdev;
799
800 list_for_each_entry(nesdev, &nes_dev_list, list) {
801 if (i == ee_flsh_adapter) {
802 eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
803 break;
804 }
805 i++;
806 }
807 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
808 }
809
810 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
811 const char *buf, size_t count)
812 {
813 char *p = (char *)buf;
814 u32 val;
815 u32 i = 0;
816 struct nes_device *nesdev;
817
818 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
819 val = simple_strtoul(p, &p, 16);
820 list_for_each_entry(nesdev, &nes_dev_list, list) {
821 if (i == ee_flsh_adapter) {
822 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
823 break;
824 }
825 i++;
826 }
827 }
828 return strnlen(buf, count);
829 }
830
831 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
832 {
833 u32 eeprom_data = 0xdead;
834 u32 i = 0;
835 struct nes_device *nesdev;
836
837 list_for_each_entry(nesdev, &nes_dev_list, list) {
838 if (i == ee_flsh_adapter) {
839 eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
840 break;
841 }
842 i++;
843 }
844
845 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
846 }
847
848 static ssize_t nes_store_ee_data(struct device_driver *ddp,
849 const char *buf, size_t count)
850 {
851 char *p = (char *)buf;
852 u32 val;
853 u32 i = 0;
854 struct nes_device *nesdev;
855
856 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
857 val = simple_strtoul(p, &p, 16);
858 list_for_each_entry(nesdev, &nes_dev_list, list) {
859 if (i == ee_flsh_adapter) {
860 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
861 break;
862 }
863 i++;
864 }
865 }
866 return strnlen(buf, count);
867 }
868
869 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
870 {
871 u32 flash_cmd = 0xdead;
872 u32 i = 0;
873 struct nes_device *nesdev;
874
875 list_for_each_entry(nesdev, &nes_dev_list, list) {
876 if (i == ee_flsh_adapter) {
877 flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
878 break;
879 }
880 i++;
881 }
882
883 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
884 }
885
886 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
887 const char *buf, size_t count)
888 {
889 char *p = (char *)buf;
890 u32 val;
891 u32 i = 0;
892 struct nes_device *nesdev;
893
894 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
895 val = simple_strtoul(p, &p, 16);
896 list_for_each_entry(nesdev, &nes_dev_list, list) {
897 if (i == ee_flsh_adapter) {
898 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
899 break;
900 }
901 i++;
902 }
903 }
904 return strnlen(buf, count);
905 }
906
907 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
908 {
909 u32 flash_data = 0xdead;
910 u32 i = 0;
911 struct nes_device *nesdev;
912
913 list_for_each_entry(nesdev, &nes_dev_list, list) {
914 if (i == ee_flsh_adapter) {
915 flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
916 break;
917 }
918 i++;
919 }
920
921 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
922 }
923
924 static ssize_t nes_store_flash_data(struct device_driver *ddp,
925 const char *buf, size_t count)
926 {
927 char *p = (char *)buf;
928 u32 val;
929 u32 i = 0;
930 struct nes_device *nesdev;
931
932 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
933 val = simple_strtoul(p, &p, 16);
934 list_for_each_entry(nesdev, &nes_dev_list, list) {
935 if (i == ee_flsh_adapter) {
936 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
937 break;
938 }
939 i++;
940 }
941 }
942 return strnlen(buf, count);
943 }
944
945 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
946 {
947 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
948 }
949
950 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
951 const char *buf, size_t count)
952 {
953 char *p = (char *)buf;
954
955 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
956 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
957
958 return strnlen(buf, count);
959 }
960
961 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
962 {
963 u32 nonidx_data = 0xdead;
964 u32 i = 0;
965 struct nes_device *nesdev;
966
967 list_for_each_entry(nesdev, &nes_dev_list, list) {
968 if (i == ee_flsh_adapter) {
969 nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
970 break;
971 }
972 i++;
973 }
974
975 return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
976 }
977
978 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
979 const char *buf, size_t count)
980 {
981 char *p = (char *)buf;
982 u32 val;
983 u32 i = 0;
984 struct nes_device *nesdev;
985
986 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
987 val = simple_strtoul(p, &p, 16);
988 list_for_each_entry(nesdev, &nes_dev_list, list) {
989 if (i == ee_flsh_adapter) {
990 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
991 break;
992 }
993 i++;
994 }
995 }
996 return strnlen(buf, count);
997 }
998
999 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1000 {
1001 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1002 }
1003
1004 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1005 const char *buf, size_t count)
1006 {
1007 char *p = (char *)buf;
1008
1009 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1010 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1011
1012 return strnlen(buf, count);
1013 }
1014
1015 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1016 {
1017 u32 idx_data = 0xdead;
1018 u32 i = 0;
1019 struct nes_device *nesdev;
1020
1021 list_for_each_entry(nesdev, &nes_dev_list, list) {
1022 if (i == ee_flsh_adapter) {
1023 idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1024 break;
1025 }
1026 i++;
1027 }
1028
1029 return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1030 }
1031
1032 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1033 const char *buf, size_t count)
1034 {
1035 char *p = (char *)buf;
1036 u32 val;
1037 u32 i = 0;
1038 struct nes_device *nesdev;
1039
1040 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1041 val = simple_strtoul(p, &p, 16);
1042 list_for_each_entry(nesdev, &nes_dev_list, list) {
1043 if (i == ee_flsh_adapter) {
1044 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1045 break;
1046 }
1047 i++;
1048 }
1049 }
1050 return strnlen(buf, count);
1051 }
1052
1053 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1054 nes_show_adapter, nes_store_adapter);
1055 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1056 nes_show_ee_cmd, nes_store_ee_cmd);
1057 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1058 nes_show_ee_data, nes_store_ee_data);
1059 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1060 nes_show_flash_cmd, nes_store_flash_cmd);
1061 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1062 nes_show_flash_data, nes_store_flash_data);
1063 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1064 nes_show_nonidx_addr, nes_store_nonidx_addr);
1065 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1066 nes_show_nonidx_data, nes_store_nonidx_data);
1067 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1068 nes_show_idx_addr, nes_store_idx_addr);
1069 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1070 nes_show_idx_data, nes_store_idx_data);
1071
1072 static int nes_create_driver_sysfs(struct pci_driver *drv)
1073 {
1074 int error;
1075 error = driver_create_file(&drv->driver, &driver_attr_adapter);
1076 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1077 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1078 error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1079 error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1080 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1081 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1082 error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1083 error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1084 return error;
1085 }
1086
1087 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1088 {
1089 driver_remove_file(&drv->driver, &driver_attr_adapter);
1090 driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1091 driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1092 driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1093 driver_remove_file(&drv->driver, &driver_attr_flash_data);
1094 driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1095 driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1096 driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1097 driver_remove_file(&drv->driver, &driver_attr_idx_data);
1098 }
1099
1100 /**
1101 * nes_init_module - module initialization entry point
1102 */
1103 static int __init nes_init_module(void)
1104 {
1105 int retval;
1106 int retval1;
1107
1108 retval = nes_cm_start();
1109 if (retval) {
1110 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1111 return retval;
1112 }
1113 retval = pci_register_driver(&nes_pci_driver);
1114 if (retval >= 0) {
1115 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1116 if (retval1 < 0)
1117 printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1118 }
1119 return retval;
1120 }
1121
1122
1123 /**
1124 * nes_exit_module - module unload entry point
1125 */
1126 static void __exit nes_exit_module(void)
1127 {
1128 nes_cm_stop();
1129 nes_remove_driver_sysfs(&nes_pci_driver);
1130
1131 pci_unregister_driver(&nes_pci_driver);
1132 }
1133
1134
1135 module_init(nes_init_module);
1136 module_exit(nes_exit_module);
Linux kernel - Deliverables
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