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x86/amd-iommu: Add per IOMMU reference counting
[linux/fpc-iii.git] / drivers / infiniband / hw / nes / nes.c
blobcbde0cfe27e0a7e3eeb784003317b90e262df6ae
1 /*
2 * Copyright (c) 2006 - 2009 Intel-NE, 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, 0644);
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, 0644);
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, 0644);
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, 0644);
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 wqm_quanta = 0x10000;
95 module_param(wqm_quanta, int, 0644);
96 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
97
98 static unsigned int limit_maxrdreqsz;
99 module_param(limit_maxrdreqsz, bool, 0644);
100 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
101
102 LIST_HEAD(nes_adapter_list);
103 static LIST_HEAD(nes_dev_list);
104
105 atomic_t qps_destroyed;
106
107 static unsigned int ee_flsh_adapter;
108 static unsigned int sysfs_nonidx_addr;
109 static unsigned int sysfs_idx_addr;
110
111 static struct pci_device_id nes_pci_table[] = {
112 {PCI_VENDOR_ID_NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020, PCI_ANY_ID, PCI_ANY_ID},
113 {0}
114 };
115
116 MODULE_DEVICE_TABLE(pci, nes_pci_table);
117
118 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
119 static int nes_net_event(struct notifier_block *, unsigned long, void *);
120 static int nes_notifiers_registered;
121
122
123 static struct notifier_block nes_inetaddr_notifier = {
124 .notifier_call = nes_inetaddr_event
125 };
126
127 static struct notifier_block nes_net_notifier = {
128 .notifier_call = nes_net_event
129 };
130
131
132
133
134 /**
135 * nes_inetaddr_event
136 */
137 static int nes_inetaddr_event(struct notifier_block *notifier,
138 unsigned long event, void *ptr)
139 {
140 struct in_ifaddr *ifa = ptr;
141 struct net_device *event_netdev = ifa->ifa_dev->dev;
142 struct nes_device *nesdev;
143 struct net_device *netdev;
144 struct nes_vnic *nesvnic;
145
146 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
147 &ifa->ifa_address, &ifa->ifa_mask);
148 list_for_each_entry(nesdev, &nes_dev_list, list) {
149 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
150 nesdev, nesdev->netdev[0]->name);
151 netdev = nesdev->netdev[0];
152 nesvnic = netdev_priv(netdev);
153 if (netdev == event_netdev) {
154 if (nesvnic->rdma_enabled == 0) {
155 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
156 " RDMA is not enabled.\n",
157 netdev->name);
158 return NOTIFY_OK;
159 }
160 /* we have ifa->ifa_address/mask here if we need it */
161 switch (event) {
162 case NETDEV_DOWN:
163 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
164 nes_write_indexed(nesdev,
165 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
166
167 nes_manage_arp_cache(netdev, netdev->dev_addr,
168 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
169 nesvnic->local_ipaddr = 0;
170 return NOTIFY_OK;
171 break;
172 case NETDEV_UP:
173 nes_debug(NES_DBG_NETDEV, "event:UP\n");
174
175 if (nesvnic->local_ipaddr != 0) {
176 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
177 return NOTIFY_OK;
178 }
179 /* Add the address to the IP table */
180 nesvnic->local_ipaddr = ifa->ifa_address;
181
182 nes_write_indexed(nesdev,
183 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
184 ntohl(ifa->ifa_address));
185 nes_manage_arp_cache(netdev, netdev->dev_addr,
186 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
187 return NOTIFY_OK;
188 break;
189 default:
190 break;
191 }
192 }
193 }
194
195 return NOTIFY_DONE;
196 }
197
198
199 /**
200 * nes_net_event
201 */
202 static int nes_net_event(struct notifier_block *notifier,
203 unsigned long event, void *ptr)
204 {
205 struct neighbour *neigh = ptr;
206 struct nes_device *nesdev;
207 struct net_device *netdev;
208 struct nes_vnic *nesvnic;
209
210 switch (event) {
211 case NETEVENT_NEIGH_UPDATE:
212 list_for_each_entry(nesdev, &nes_dev_list, list) {
213 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
214 netdev = nesdev->netdev[0];
215 nesvnic = netdev_priv(netdev);
216 if (netdev == neigh->dev) {
217 if (nesvnic->rdma_enabled == 0) {
218 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
219 netdev->name);
220 } else {
221 if (neigh->nud_state & NUD_VALID) {
222 nes_manage_arp_cache(neigh->dev, neigh->ha,
223 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
224 } else {
225 nes_manage_arp_cache(neigh->dev, neigh->ha,
226 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
227 }
228 }
229 return NOTIFY_OK;
230 }
231 }
232 break;
233 default:
234 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
235 break;
236 }
237
238 return NOTIFY_DONE;
239 }
240
241
242 /**
243 * nes_add_ref
244 */
245 void nes_add_ref(struct ib_qp *ibqp)
246 {
247 struct nes_qp *nesqp;
248
249 nesqp = to_nesqp(ibqp);
250 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
251 ibqp->qp_num, atomic_read(&nesqp->refcount));
252 atomic_inc(&nesqp->refcount);
253 }
254
255 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
256 {
257 unsigned long flags;
258 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
259 struct nes_adapter *nesadapter = nesdev->nesadapter;
260 u32 qp_id;
261
262 atomic_inc(&qps_destroyed);
263
264 /* Free the control structures */
265
266 qp_id = nesqp->hwqp.qp_id;
267 if (nesqp->pbl_vbase) {
268 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
269 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
270 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
271 nesadapter->free_256pbl++;
272 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
273 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
274 nesqp->pbl_vbase = NULL;
275
276 } else {
277 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
278 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
279 }
280 nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
281
282 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
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_hw_cqp_wqe *cqp_wqe;
297 struct nes_cqp_request *cqp_request;
298 u32 opcode;
299
300 nesqp = to_nesqp(ibqp);
301
302 if (atomic_read(&nesqp->refcount) == 0) {
303 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
304 __func__, ibqp->qp_num, nesqp->last_aeq);
305 BUG();
306 }
307
308 if (atomic_dec_and_test(&nesqp->refcount)) {
309 /* Destroy the QP */
310 cqp_request = nes_get_cqp_request(nesdev);
311 if (cqp_request == NULL) {
312 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
313 return;
314 }
315 cqp_request->waiting = 0;
316 cqp_request->callback = 1;
317 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
318 cqp_request->cqp_callback_pointer = nesqp;
319 cqp_wqe = &cqp_request->cqp_wqe;
320
321 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
322 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
323
324 if (nesqp->hte_added) {
325 opcode |= NES_CQP_QP_DEL_HTE;
326 nesqp->hte_added = 0;
327 }
328 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
329 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
330 u64temp = (u64)nesqp->nesqp_context_pbase;
331 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
332 nes_post_cqp_request(nesdev, cqp_request);
333 }
334 }
335
336
337 /**
338 * nes_get_qp
339 */
340 struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
341 {
342 struct nes_vnic *nesvnic = to_nesvnic(device);
343 struct nes_device *nesdev = nesvnic->nesdev;
344 struct nes_adapter *nesadapter = nesdev->nesadapter;
345
346 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
347 return NULL;
348
349 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
350 }
351
352
353 /**
354 * nes_print_macaddr
355 */
356 static void nes_print_macaddr(struct net_device *netdev)
357 {
358 nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
359 netdev->name, netdev->dev_addr, netdev->irq);
360 }
361
362 /**
363 * nes_interrupt - handle interrupts
364 */
365 static irqreturn_t nes_interrupt(int irq, void *dev_id)
366 {
367 struct nes_device *nesdev = (struct nes_device *)dev_id;
368 int handled = 0;
369 u32 int_mask;
370 u32 int_req;
371 u32 int_stat;
372 u32 intf_int_stat;
373 u32 timer_stat;
374
375 if (nesdev->msi_enabled) {
376 /* No need to read the interrupt pending register if msi is enabled */
377 handled = 1;
378 } else {
379 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
380 /* Master interrupt enable provides synchronization for kicking off bottom half
381 when interrupt sharing is going on */
382 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
383 if (int_mask & 0x80000000) {
384 /* Check interrupt status to see if this might be ours */
385 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
386 int_req = nesdev->int_req;
387 if (int_stat&int_req) {
388 /* if interesting CEQ or AEQ is pending, claim the interrupt */
389 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
390 handled = 1;
391 } else {
392 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
393 /* Timer might be running but might be for another function */
394 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
395 if ((timer_stat & nesdev->timer_int_req) != 0) {
396 handled = 1;
397 }
398 }
399 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
400 (handled == 0)) {
401 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
402 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
403 handled = 1;
404 }
405 }
406 }
407 if (handled) {
408 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
409 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
410 /* Save off the status to save an additional read */
411 nesdev->int_stat = int_stat;
412 nesdev->napi_isr_ran = 1;
413 }
414 }
415 }
416 } else {
417 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
418 }
419 }
420
421 if (handled) {
422
423 if (nes_napi_isr(nesdev) == 0) {
424 tasklet_schedule(&nesdev->dpc_tasklet);
425
426 }
427 return IRQ_HANDLED;
428 } else {
429 return IRQ_NONE;
430 }
431 }
432
433
434 /**
435 * nes_probe - Device initialization
436 */
437 static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
438 {
439 struct net_device *netdev = NULL;
440 struct nes_device *nesdev = NULL;
441 int ret = 0;
442 struct nes_vnic *nesvnic = NULL;
443 void __iomem *mmio_regs = NULL;
444 u8 hw_rev;
445
446 assert(pcidev != NULL);
447 assert(ent != NULL);
448
449 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
450 DRV_VERSION, pci_name(pcidev));
451
452 ret = pci_enable_device(pcidev);
453 if (ret) {
454 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
455 goto bail0;
456 }
457
458 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
459 (long unsigned int)pci_resource_start(pcidev, BAR_0),
460 (long unsigned int)pci_resource_len(pcidev, BAR_0));
461 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
462 (long unsigned int)pci_resource_start(pcidev, BAR_1),
463 (long unsigned int)pci_resource_len(pcidev, BAR_1));
464
465 /* Make sure PCI base addr are MMIO */
466 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
467 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
468 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
469 ret = -ENODEV;
470 goto bail1;
471 }
472
473 /* Reserve PCI I/O and memory resources */
474 ret = pci_request_regions(pcidev, DRV_NAME);
475 if (ret) {
476 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
477 goto bail1;
478 }
479
480 if ((sizeof(dma_addr_t) > 4)) {
481 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
482 if (ret < 0) {
483 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
484 goto bail2;
485 }
486 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
487 if (ret) {
488 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
489 goto bail2;
490 }
491 } else {
492 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
493 if (ret < 0) {
494 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
495 goto bail2;
496 }
497 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
498 if (ret) {
499 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
500 goto bail2;
501 }
502 }
503
504 pci_set_master(pcidev);
505
506 /* Allocate hardware structure */
507 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
508 if (!nesdev) {
509 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
510 ret = -ENOMEM;
511 goto bail2;
512 }
513
514 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
515 nesdev->pcidev = pcidev;
516 pci_set_drvdata(pcidev, nesdev);
517
518 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
519 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
520
521 spin_lock_init(&nesdev->indexed_regs_lock);
522
523 /* Remap the PCI registers in adapter BAR0 to kernel VA space */
524 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
525 if (mmio_regs == NULL) {
526 printk(KERN_ERR PFX "Unable to remap BAR0\n");
527 ret = -EIO;
528 goto bail3;
529 }
530 nesdev->regs = mmio_regs;
531 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
532
533 /* Ensure interrupts are disabled */
534 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
535
536 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
537 if (!pci_enable_msi(nesdev->pcidev)) {
538 nesdev->msi_enabled = 1;
539 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
540 pci_name(pcidev));
541 } else {
542 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
543 pci_name(pcidev));
544 }
545 } else {
546 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
547 pci_name(pcidev));
548 }
549
550 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
551 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
552
553 /* Init the adapter */
554 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
555 if (!nesdev->nesadapter) {
556 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
557 ret = -ENOMEM;
558 goto bail5;
559 }
560 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
561 nesdev->nesadapter->wqm_quanta = wqm_quanta;
562
563 /* nesdev->base_doorbell_index =
564 nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
565 nesdev->base_doorbell_index = 1;
566 nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
567 if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
568 switch (PCI_FUNC(nesdev->pcidev->devfn) %
569 nesdev->nesadapter->port_count) {
570 case 1:
571 nesdev->mac_index = 2;
572 break;
573 case 2:
574 nesdev->mac_index = 1;
575 break;
576 case 3:
577 nesdev->mac_index = 3;
578 break;
579 case 0:
580 default:
581 nesdev->mac_index = 0;
582 }
583 } else {
584 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
585 nesdev->nesadapter->port_count;
586 }
587
588 if ((limit_maxrdreqsz ||
589 ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
590 (hw_rev == NE020_REV1))) &&
591 (pcie_get_readrq(pcidev) > 256)) {
592 if (pcie_set_readrq(pcidev, 256))
593 printk(KERN_ERR PFX "Unable to set max read request"
594 " to 256 bytes\n");
595 else
596 nes_debug(NES_DBG_INIT, "Max read request size set"
597 " to 256 bytes\n");
598 }
599
600 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
601
602 /* bring up the Control QP */
603 if (nes_init_cqp(nesdev)) {
604 ret = -ENODEV;
605 goto bail6;
606 }
607
608 /* Arm the CCQ */
609 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
610 PCI_FUNC(nesdev->pcidev->devfn));
611 nes_read32(nesdev->regs+NES_CQE_ALLOC);
612
613 /* Enable the interrupts */
614 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
615 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
616 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
617 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
618 }
619
620 /* TODO: This really should be the first driver to load, not function 0 */
621 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
622 /* pick up PCI and critical errors if the first driver to load */
623 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
624 nesdev->int_req |= NES_INT_INTF;
625 } else {
626 nesdev->intf_int_req = 0;
627 }
628 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
629 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
630 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
631 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
632 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
633
634 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
635
636 /* deal with both periodic and one_shot */
637 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
638 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
639 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
640 PCI_FUNC(nesdev->pcidev->devfn),
641 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
642
643 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
644
645 list_add_tail(&nesdev->list, &nes_dev_list);
646
647 /* Request an interrupt line for the driver */
648 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
649 if (ret) {
650 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
651 pci_name(pcidev), pcidev->irq);
652 goto bail65;
653 }
654
655 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
656
657 if (nes_notifiers_registered == 0) {
658 register_inetaddr_notifier(&nes_inetaddr_notifier);
659 register_netevent_notifier(&nes_net_notifier);
660 }
661 nes_notifiers_registered++;
662
663 /* Initialize network devices */
664 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
665 goto bail7;
666 }
667
668 /* Register network device */
669 ret = register_netdev(netdev);
670 if (ret) {
671 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
672 nes_netdev_destroy(netdev);
673 goto bail7;
674 }
675
676 nes_print_macaddr(netdev);
677 /* create a CM core for this netdev */
678 nesvnic = netdev_priv(netdev);
679
680 nesdev->netdev_count++;
681 nesdev->nesadapter->netdev_count++;
682
683
684 printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
685 pci_name(pcidev));
686 return 0;
687
688 bail7:
689 printk(KERN_ERR PFX "bail7\n");
690 while (nesdev->netdev_count > 0) {
691 nesdev->netdev_count--;
692 nesdev->nesadapter->netdev_count--;
693
694 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
695 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
696 }
697
698 nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
699 nesdev->netdev_count, nesdev->nesadapter->netdev_count);
700
701 nes_notifiers_registered--;
702 if (nes_notifiers_registered == 0) {
703 unregister_netevent_notifier(&nes_net_notifier);
704 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
705 }
706
707 list_del(&nesdev->list);
708 nes_destroy_cqp(nesdev);
709
710 bail65:
711 printk(KERN_ERR PFX "bail65\n");
712 free_irq(pcidev->irq, nesdev);
713 if (nesdev->msi_enabled) {
714 pci_disable_msi(pcidev);
715 }
716 bail6:
717 printk(KERN_ERR PFX "bail6\n");
718 tasklet_kill(&nesdev->dpc_tasklet);
719 /* Deallocate the Adapter Structure */
720 nes_destroy_adapter(nesdev->nesadapter);
721
722 bail5:
723 printk(KERN_ERR PFX "bail5\n");
724 iounmap(nesdev->regs);
725
726 bail3:
727 printk(KERN_ERR PFX "bail3\n");
728 kfree(nesdev);
729
730 bail2:
731 pci_release_regions(pcidev);
732
733 bail1:
734 pci_disable_device(pcidev);
735
736 bail0:
737 return ret;
738 }
739
740
741 /**
742 * nes_remove - unload from kernel
743 */
744 static void __devexit nes_remove(struct pci_dev *pcidev)
745 {
746 struct nes_device *nesdev = pci_get_drvdata(pcidev);
747 struct net_device *netdev;
748 int netdev_index = 0;
749
750 if (nesdev->netdev_count) {
751 netdev = nesdev->netdev[netdev_index];
752 if (netdev) {
753 netif_stop_queue(netdev);
754 unregister_netdev(netdev);
755 nes_netdev_destroy(netdev);
756
757 nesdev->netdev[netdev_index] = NULL;
758 nesdev->netdev_count--;
759 nesdev->nesadapter->netdev_count--;
760 }
761 }
762
763 nes_notifiers_registered--;
764 if (nes_notifiers_registered == 0) {
765 unregister_netevent_notifier(&nes_net_notifier);
766 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
767 }
768
769 list_del(&nesdev->list);
770 nes_destroy_cqp(nesdev);
771
772 free_irq(pcidev->irq, nesdev);
773 tasklet_kill(&nesdev->dpc_tasklet);
774
775 /* Deallocate the Adapter Structure */
776 nes_destroy_adapter(nesdev->nesadapter);
777
778 if (nesdev->msi_enabled) {
779 pci_disable_msi(pcidev);
780 }
781
782 iounmap(nesdev->regs);
783 kfree(nesdev);
784
785 /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
786 pci_release_regions(pcidev);
787 pci_disable_device(pcidev);
788 pci_set_drvdata(pcidev, NULL);
789 }
790
791
792 static struct pci_driver nes_pci_driver = {
793 .name = DRV_NAME,
794 .id_table = nes_pci_table,
795 .probe = nes_probe,
796 .remove = __devexit_p(nes_remove),
797 };
798
799 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
800 {
801 unsigned int devfn = 0xffffffff;
802 unsigned char bus_number = 0xff;
803 unsigned int 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 devfn = nesdev->pcidev->devfn;
809 bus_number = nesdev->pcidev->bus->number;
810 break;
811 }
812 i++;
813 }
814
815 return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
816 }
817
818 static ssize_t nes_store_adapter(struct device_driver *ddp,
819 const char *buf, size_t count)
820 {
821 char *p = (char *)buf;
822
823 ee_flsh_adapter = simple_strtoul(p, &p, 10);
824 return strnlen(buf, count);
825 }
826
827 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
828 {
829 u32 eeprom_cmd = 0xdead;
830 u32 i = 0;
831 struct nes_device *nesdev;
832
833 list_for_each_entry(nesdev, &nes_dev_list, list) {
834 if (i == ee_flsh_adapter) {
835 eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
836 break;
837 }
838 i++;
839 }
840 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
841 }
842
843 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
844 const char *buf, size_t count)
845 {
846 char *p = (char *)buf;
847 u32 val;
848 u32 i = 0;
849 struct nes_device *nesdev;
850
851 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
852 val = simple_strtoul(p, &p, 16);
853 list_for_each_entry(nesdev, &nes_dev_list, list) {
854 if (i == ee_flsh_adapter) {
855 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
856 break;
857 }
858 i++;
859 }
860 }
861 return strnlen(buf, count);
862 }
863
864 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
865 {
866 u32 eeprom_data = 0xdead;
867 u32 i = 0;
868 struct nes_device *nesdev;
869
870 list_for_each_entry(nesdev, &nes_dev_list, list) {
871 if (i == ee_flsh_adapter) {
872 eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
873 break;
874 }
875 i++;
876 }
877
878 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
879 }
880
881 static ssize_t nes_store_ee_data(struct device_driver *ddp,
882 const char *buf, size_t count)
883 {
884 char *p = (char *)buf;
885 u32 val;
886 u32 i = 0;
887 struct nes_device *nesdev;
888
889 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
890 val = simple_strtoul(p, &p, 16);
891 list_for_each_entry(nesdev, &nes_dev_list, list) {
892 if (i == ee_flsh_adapter) {
893 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
894 break;
895 }
896 i++;
897 }
898 }
899 return strnlen(buf, count);
900 }
901
902 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
903 {
904 u32 flash_cmd = 0xdead;
905 u32 i = 0;
906 struct nes_device *nesdev;
907
908 list_for_each_entry(nesdev, &nes_dev_list, list) {
909 if (i == ee_flsh_adapter) {
910 flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
911 break;
912 }
913 i++;
914 }
915
916 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
917 }
918
919 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
920 const char *buf, size_t count)
921 {
922 char *p = (char *)buf;
923 u32 val;
924 u32 i = 0;
925 struct nes_device *nesdev;
926
927 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
928 val = simple_strtoul(p, &p, 16);
929 list_for_each_entry(nesdev, &nes_dev_list, list) {
930 if (i == ee_flsh_adapter) {
931 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
932 break;
933 }
934 i++;
935 }
936 }
937 return strnlen(buf, count);
938 }
939
940 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
941 {
942 u32 flash_data = 0xdead;
943 u32 i = 0;
944 struct nes_device *nesdev;
945
946 list_for_each_entry(nesdev, &nes_dev_list, list) {
947 if (i == ee_flsh_adapter) {
948 flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
949 break;
950 }
951 i++;
952 }
953
954 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
955 }
956
957 static ssize_t nes_store_flash_data(struct device_driver *ddp,
958 const char *buf, size_t count)
959 {
960 char *p = (char *)buf;
961 u32 val;
962 u32 i = 0;
963 struct nes_device *nesdev;
964
965 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
966 val = simple_strtoul(p, &p, 16);
967 list_for_each_entry(nesdev, &nes_dev_list, list) {
968 if (i == ee_flsh_adapter) {
969 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
970 break;
971 }
972 i++;
973 }
974 }
975 return strnlen(buf, count);
976 }
977
978 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
979 {
980 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
981 }
982
983 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
984 const char *buf, size_t count)
985 {
986 char *p = (char *)buf;
987
988 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
989 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
990
991 return strnlen(buf, count);
992 }
993
994 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
995 {
996 u32 nonidx_data = 0xdead;
997 u32 i = 0;
998 struct nes_device *nesdev;
999
1000 list_for_each_entry(nesdev, &nes_dev_list, list) {
1001 if (i == ee_flsh_adapter) {
1002 nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
1003 break;
1004 }
1005 i++;
1006 }
1007
1008 return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1009 }
1010
1011 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1012 const char *buf, size_t count)
1013 {
1014 char *p = (char *)buf;
1015 u32 val;
1016 u32 i = 0;
1017 struct nes_device *nesdev;
1018
1019 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1020 val = simple_strtoul(p, &p, 16);
1021 list_for_each_entry(nesdev, &nes_dev_list, list) {
1022 if (i == ee_flsh_adapter) {
1023 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1024 break;
1025 }
1026 i++;
1027 }
1028 }
1029 return strnlen(buf, count);
1030 }
1031
1032 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1033 {
1034 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1035 }
1036
1037 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1038 const char *buf, size_t count)
1039 {
1040 char *p = (char *)buf;
1041
1042 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1043 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1044
1045 return strnlen(buf, count);
1046 }
1047
1048 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1049 {
1050 u32 idx_data = 0xdead;
1051 u32 i = 0;
1052 struct nes_device *nesdev;
1053
1054 list_for_each_entry(nesdev, &nes_dev_list, list) {
1055 if (i == ee_flsh_adapter) {
1056 idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1057 break;
1058 }
1059 i++;
1060 }
1061
1062 return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1063 }
1064
1065 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1066 const char *buf, size_t count)
1067 {
1068 char *p = (char *)buf;
1069 u32 val;
1070 u32 i = 0;
1071 struct nes_device *nesdev;
1072
1073 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1074 val = simple_strtoul(p, &p, 16);
1075 list_for_each_entry(nesdev, &nes_dev_list, list) {
1076 if (i == ee_flsh_adapter) {
1077 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1078 break;
1079 }
1080 i++;
1081 }
1082 }
1083 return strnlen(buf, count);
1084 }
1085
1086
1087 /**
1088 * nes_show_wqm_quanta
1089 */
1090 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1091 {
1092 u32 wqm_quanta_value = 0xdead;
1093 u32 i = 0;
1094 struct nes_device *nesdev;
1095
1096 list_for_each_entry(nesdev, &nes_dev_list, list) {
1097 if (i == ee_flsh_adapter) {
1098 wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1099 break;
1100 }
1101 i++;
1102 }
1103
1104 return snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta);
1105 }
1106
1107
1108 /**
1109 * nes_store_wqm_quanta
1110 */
1111 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1112 const char *buf, size_t count)
1113 {
1114 unsigned long wqm_quanta_value;
1115 u32 wqm_config1;
1116 u32 i = 0;
1117 struct nes_device *nesdev;
1118
1119 strict_strtoul(buf, 0, &wqm_quanta_value);
1120 list_for_each_entry(nesdev, &nes_dev_list, list) {
1121 if (i == ee_flsh_adapter) {
1122 nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1123 wqm_config1 = nes_read_indexed(nesdev,
1124 NES_IDX_WQM_CONFIG1);
1125 nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1126 ((wqm_quanta_value << 1) |
1127 (wqm_config1 & 0x00000001)));
1128 break;
1129 }
1130 i++;
1131 }
1132 return strnlen(buf, count);
1133 }
1134
1135 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1136 nes_show_adapter, nes_store_adapter);
1137 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1138 nes_show_ee_cmd, nes_store_ee_cmd);
1139 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1140 nes_show_ee_data, nes_store_ee_data);
1141 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1142 nes_show_flash_cmd, nes_store_flash_cmd);
1143 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1144 nes_show_flash_data, nes_store_flash_data);
1145 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1146 nes_show_nonidx_addr, nes_store_nonidx_addr);
1147 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1148 nes_show_nonidx_data, nes_store_nonidx_data);
1149 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1150 nes_show_idx_addr, nes_store_idx_addr);
1151 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1152 nes_show_idx_data, nes_store_idx_data);
1153 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1154 nes_show_wqm_quanta, nes_store_wqm_quanta);
1155
1156 static int nes_create_driver_sysfs(struct pci_driver *drv)
1157 {
1158 int error;
1159 error = driver_create_file(&drv->driver, &driver_attr_adapter);
1160 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1161 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1162 error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1163 error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1164 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1165 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1166 error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1167 error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1168 error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1169 return error;
1170 }
1171
1172 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1173 {
1174 driver_remove_file(&drv->driver, &driver_attr_adapter);
1175 driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1176 driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1177 driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1178 driver_remove_file(&drv->driver, &driver_attr_flash_data);
1179 driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1180 driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1181 driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1182 driver_remove_file(&drv->driver, &driver_attr_idx_data);
1183 driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1184 }
1185
1186 /**
1187 * nes_init_module - module initialization entry point
1188 */
1189 static int __init nes_init_module(void)
1190 {
1191 int retval;
1192 int retval1;
1193
1194 retval = nes_cm_start();
1195 if (retval) {
1196 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1197 return retval;
1198 }
1199 retval = pci_register_driver(&nes_pci_driver);
1200 if (retval >= 0) {
1201 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1202 if (retval1 < 0)
1203 printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1204 }
1205 return retval;
1206 }
1207
1208
1209 /**
1210 * nes_exit_module - module unload entry point
1211 */
1212 static void __exit nes_exit_module(void)
1213 {
1214 nes_cm_stop();
1215 nes_remove_driver_sysfs(&nes_pci_driver);
1216
1217 pci_unregister_driver(&nes_pci_driver);
1218 }
1219
1220
1221 module_init(nes_init_module);
1222 module_exit(nes_exit_module);
Linux with added FPC-III support