]> err.no Git - linux-2.6/blob - drivers/infiniband/hw/nes/nes.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / 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);