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Staging: zram: fix up some sysfs attribute permissions
[zen-stable.git] / drivers / infiniband / hw / nes / nes.c
blob0c9f0aa5d4ea366a09c2fc955addfc90559ce6c7
1 /*
2 * Copyright (c) 2006 - 2009 Intel Corporation. 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 <linux/slab.h>
48 #include <asm/io.h>
49 #include <asm/irq.h>
50 #include <asm/byteorder.h>
51 #include <rdma/ib_smi.h>
52 #include <rdma/ib_verbs.h>
53 #include <rdma/ib_pack.h>
54 #include <rdma/iw_cm.h>
55
56 #include "nes.h"
57
58 #include <net/netevent.h>
59 #include <net/neighbour.h>
60 #include <linux/route.h>
61 #include <net/ip_fib.h>
62
63 MODULE_AUTHOR("NetEffect");
64 MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
65 MODULE_LICENSE("Dual BSD/GPL");
66 MODULE_VERSION(DRV_VERSION);
67
68 int max_mtu = 9000;
69 int interrupt_mod_interval = 0;
70
71
72 /* Interoperability */
73 int mpa_version = 1;
74 module_param(mpa_version, int, 0644);
75 MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
76
77 /* Interoperability */
78 int disable_mpa_crc = 0;
79 module_param(disable_mpa_crc, int, 0644);
80 MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
81
82 unsigned int send_first = 0;
83 module_param(send_first, int, 0644);
84 MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
85
86
87 unsigned int nes_drv_opt = 0;
88 module_param(nes_drv_opt, int, 0644);
89 MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
90
91 unsigned int nes_debug_level = 0;
92 module_param_named(debug_level, nes_debug_level, uint, 0644);
93 MODULE_PARM_DESC(debug_level, "Enable debug output level");
94
95 unsigned int wqm_quanta = 0x10000;
96 module_param(wqm_quanta, int, 0644);
97 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
98
99 static unsigned int limit_maxrdreqsz;
100 module_param(limit_maxrdreqsz, bool, 0644);
101 MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
102
103 LIST_HEAD(nes_adapter_list);
104 static LIST_HEAD(nes_dev_list);
105
106 atomic_t qps_destroyed;
107
108 static unsigned int ee_flsh_adapter;
109 static unsigned int sysfs_nonidx_addr;
110 static unsigned int sysfs_idx_addr;
111
112 static struct pci_device_id nes_pci_table[] = {
113 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
114 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
115 {0}
116 };
117
118 MODULE_DEVICE_TABLE(pci, nes_pci_table);
119
120 static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
121 static int nes_net_event(struct notifier_block *, unsigned long, void *);
122 static int nes_notifiers_registered;
123
124
125 static struct notifier_block nes_inetaddr_notifier = {
126 .notifier_call = nes_inetaddr_event
127 };
128
129 static struct notifier_block nes_net_notifier = {
130 .notifier_call = nes_net_event
131 };
132
133
134
135
136 /**
137 * nes_inetaddr_event
138 */
139 static int nes_inetaddr_event(struct notifier_block *notifier,
140 unsigned long event, void *ptr)
141 {
142 struct in_ifaddr *ifa = ptr;
143 struct net_device *event_netdev = ifa->ifa_dev->dev;
144 struct nes_device *nesdev;
145 struct net_device *netdev;
146 struct nes_vnic *nesvnic;
147
148 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
149 &ifa->ifa_address, &ifa->ifa_mask);
150 list_for_each_entry(nesdev, &nes_dev_list, list) {
151 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
152 nesdev, nesdev->netdev[0]->name);
153 netdev = nesdev->netdev[0];
154 nesvnic = netdev_priv(netdev);
155 if (netdev == event_netdev) {
156 if (nesvnic->rdma_enabled == 0) {
157 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
158 " RDMA is not enabled.\n",
159 netdev->name);
160 return NOTIFY_OK;
161 }
162 /* we have ifa->ifa_address/mask here if we need it */
163 switch (event) {
164 case NETDEV_DOWN:
165 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
166 nes_write_indexed(nesdev,
167 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
168
169 nes_manage_arp_cache(netdev, netdev->dev_addr,
170 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
171 nesvnic->local_ipaddr = 0;
172 return NOTIFY_OK;
173 break;
174 case NETDEV_UP:
175 nes_debug(NES_DBG_NETDEV, "event:UP\n");
176
177 if (nesvnic->local_ipaddr != 0) {
178 nes_debug(NES_DBG_NETDEV, "Interface already has local_ipaddr\n");
179 return NOTIFY_OK;
180 }
181 /* Add the address to the IP table */
182 nesvnic->local_ipaddr = ifa->ifa_address;
183
184 nes_write_indexed(nesdev,
185 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
186 ntohl(ifa->ifa_address));
187 nes_manage_arp_cache(netdev, netdev->dev_addr,
188 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
189 return NOTIFY_OK;
190 break;
191 default:
192 break;
193 }
194 }
195 }
196
197 return NOTIFY_DONE;
198 }
199
200
201 /**
202 * nes_net_event
203 */
204 static int nes_net_event(struct notifier_block *notifier,
205 unsigned long event, void *ptr)
206 {
207 struct neighbour *neigh = ptr;
208 struct nes_device *nesdev;
209 struct net_device *netdev;
210 struct nes_vnic *nesvnic;
211
212 switch (event) {
213 case NETEVENT_NEIGH_UPDATE:
214 list_for_each_entry(nesdev, &nes_dev_list, list) {
215 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
216 netdev = nesdev->netdev[0];
217 nesvnic = netdev_priv(netdev);
218 if (netdev == neigh->dev) {
219 if (nesvnic->rdma_enabled == 0) {
220 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
221 netdev->name);
222 } else {
223 if (neigh->nud_state & NUD_VALID) {
224 nes_manage_arp_cache(neigh->dev, neigh->ha,
225 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
226 } else {
227 nes_manage_arp_cache(neigh->dev, neigh->ha,
228 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
229 }
230 }
231 return NOTIFY_OK;
232 }
233 }
234 break;
235 default:
236 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
237 break;
238 }
239
240 return NOTIFY_DONE;
241 }
242
243
244 /**
245 * nes_add_ref
246 */
247 void nes_add_ref(struct ib_qp *ibqp)
248 {
249 struct nes_qp *nesqp;
250
251 nesqp = to_nesqp(ibqp);
252 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
253 ibqp->qp_num, atomic_read(&nesqp->refcount));
254 atomic_inc(&nesqp->refcount);
255 }
256
257 static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
258 {
259 unsigned long flags;
260 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
261 struct nes_adapter *nesadapter = nesdev->nesadapter;
262
263 atomic_inc(&qps_destroyed);
264
265 /* Free the control structures */
266
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 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_BIT_MASK(64));
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_BIT_MASK(64));
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_BIT_MASK(32));
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_BIT_MASK(32));
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),
524 pci_resource_len(pcidev, BAR_0));
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 /* Register network device */
668 ret = register_netdev(netdev);
669 if (ret) {
670 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
671 nes_netdev_destroy(netdev);
672 goto bail7;
673 }
674
675 nes_print_macaddr(netdev);
676
677 nesdev->netdev_count++;
678 nesdev->nesadapter->netdev_count++;
679
680 printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
681 pci_name(pcidev));
682 return 0;
683
684 bail7:
685 printk(KERN_ERR PFX "bail7\n");
686 while (nesdev->netdev_count > 0) {
687 nesdev->netdev_count--;
688 nesdev->nesadapter->netdev_count--;
689
690 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
691 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
692 }
693
694 nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
695 nesdev->netdev_count, nesdev->nesadapter->netdev_count);
696
697 nes_notifiers_registered--;
698 if (nes_notifiers_registered == 0) {
699 unregister_netevent_notifier(&nes_net_notifier);
700 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
701 }
702
703 list_del(&nesdev->list);
704 nes_destroy_cqp(nesdev);
705
706 bail65:
707 printk(KERN_ERR PFX "bail65\n");
708 free_irq(pcidev->irq, nesdev);
709 if (nesdev->msi_enabled) {
710 pci_disable_msi(pcidev);
711 }
712 bail6:
713 printk(KERN_ERR PFX "bail6\n");
714 tasklet_kill(&nesdev->dpc_tasklet);
715 /* Deallocate the Adapter Structure */
716 nes_destroy_adapter(nesdev->nesadapter);
717
718 bail5:
719 printk(KERN_ERR PFX "bail5\n");
720 iounmap(nesdev->regs);
721
722 bail3:
723 printk(KERN_ERR PFX "bail3\n");
724 kfree(nesdev);
725
726 bail2:
727 pci_release_regions(pcidev);
728
729 bail1:
730 pci_disable_device(pcidev);
731
732 bail0:
733 return ret;
734 }
735
736
737 /**
738 * nes_remove - unload from kernel
739 */
740 static void __devexit nes_remove(struct pci_dev *pcidev)
741 {
742 struct nes_device *nesdev = pci_get_drvdata(pcidev);
743 struct net_device *netdev;
744 int netdev_index = 0;
745
746 if (nesdev->netdev_count) {
747 netdev = nesdev->netdev[netdev_index];
748 if (netdev) {
749 netif_stop_queue(netdev);
750 unregister_netdev(netdev);
751 nes_netdev_destroy(netdev);
752
753 nesdev->netdev[netdev_index] = NULL;
754 nesdev->netdev_count--;
755 nesdev->nesadapter->netdev_count--;
756 }
757 }
758
759 nes_notifiers_registered--;
760 if (nes_notifiers_registered == 0) {
761 unregister_netevent_notifier(&nes_net_notifier);
762 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
763 }
764
765 list_del(&nesdev->list);
766 nes_destroy_cqp(nesdev);
767
768 free_irq(pcidev->irq, nesdev);
769 tasklet_kill(&nesdev->dpc_tasklet);
770
771 /* Deallocate the Adapter Structure */
772 nes_destroy_adapter(nesdev->nesadapter);
773
774 if (nesdev->msi_enabled) {
775 pci_disable_msi(pcidev);
776 }
777
778 iounmap(nesdev->regs);
779 kfree(nesdev);
780
781 /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
782 pci_release_regions(pcidev);
783 pci_disable_device(pcidev);
784 pci_set_drvdata(pcidev, NULL);
785 }
786
787
788 static struct pci_driver nes_pci_driver = {
789 .name = DRV_NAME,
790 .id_table = nes_pci_table,
791 .probe = nes_probe,
792 .remove = __devexit_p(nes_remove),
793 };
794
795 static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
796 {
797 unsigned int devfn = 0xffffffff;
798 unsigned char bus_number = 0xff;
799 unsigned int i = 0;
800 struct nes_device *nesdev;
801
802 list_for_each_entry(nesdev, &nes_dev_list, list) {
803 if (i == ee_flsh_adapter) {
804 devfn = nesdev->pcidev->devfn;
805 bus_number = nesdev->pcidev->bus->number;
806 break;
807 }
808 i++;
809 }
810
811 return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
812 }
813
814 static ssize_t nes_store_adapter(struct device_driver *ddp,
815 const char *buf, size_t count)
816 {
817 char *p = (char *)buf;
818
819 ee_flsh_adapter = simple_strtoul(p, &p, 10);
820 return strnlen(buf, count);
821 }
822
823 static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
824 {
825 u32 eeprom_cmd = 0xdead;
826 u32 i = 0;
827 struct nes_device *nesdev;
828
829 list_for_each_entry(nesdev, &nes_dev_list, list) {
830 if (i == ee_flsh_adapter) {
831 eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
832 break;
833 }
834 i++;
835 }
836 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
837 }
838
839 static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
840 const char *buf, size_t count)
841 {
842 char *p = (char *)buf;
843 u32 val;
844 u32 i = 0;
845 struct nes_device *nesdev;
846
847 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
848 val = simple_strtoul(p, &p, 16);
849 list_for_each_entry(nesdev, &nes_dev_list, list) {
850 if (i == ee_flsh_adapter) {
851 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
852 break;
853 }
854 i++;
855 }
856 }
857 return strnlen(buf, count);
858 }
859
860 static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
861 {
862 u32 eeprom_data = 0xdead;
863 u32 i = 0;
864 struct nes_device *nesdev;
865
866 list_for_each_entry(nesdev, &nes_dev_list, list) {
867 if (i == ee_flsh_adapter) {
868 eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
869 break;
870 }
871 i++;
872 }
873
874 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
875 }
876
877 static ssize_t nes_store_ee_data(struct device_driver *ddp,
878 const char *buf, size_t count)
879 {
880 char *p = (char *)buf;
881 u32 val;
882 u32 i = 0;
883 struct nes_device *nesdev;
884
885 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
886 val = simple_strtoul(p, &p, 16);
887 list_for_each_entry(nesdev, &nes_dev_list, list) {
888 if (i == ee_flsh_adapter) {
889 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
890 break;
891 }
892 i++;
893 }
894 }
895 return strnlen(buf, count);
896 }
897
898 static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
899 {
900 u32 flash_cmd = 0xdead;
901 u32 i = 0;
902 struct nes_device *nesdev;
903
904 list_for_each_entry(nesdev, &nes_dev_list, list) {
905 if (i == ee_flsh_adapter) {
906 flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
907 break;
908 }
909 i++;
910 }
911
912 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
913 }
914
915 static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
916 const char *buf, size_t count)
917 {
918 char *p = (char *)buf;
919 u32 val;
920 u32 i = 0;
921 struct nes_device *nesdev;
922
923 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
924 val = simple_strtoul(p, &p, 16);
925 list_for_each_entry(nesdev, &nes_dev_list, list) {
926 if (i == ee_flsh_adapter) {
927 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
928 break;
929 }
930 i++;
931 }
932 }
933 return strnlen(buf, count);
934 }
935
936 static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
937 {
938 u32 flash_data = 0xdead;
939 u32 i = 0;
940 struct nes_device *nesdev;
941
942 list_for_each_entry(nesdev, &nes_dev_list, list) {
943 if (i == ee_flsh_adapter) {
944 flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
945 break;
946 }
947 i++;
948 }
949
950 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
951 }
952
953 static ssize_t nes_store_flash_data(struct device_driver *ddp,
954 const char *buf, size_t count)
955 {
956 char *p = (char *)buf;
957 u32 val;
958 u32 i = 0;
959 struct nes_device *nesdev;
960
961 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
962 val = simple_strtoul(p, &p, 16);
963 list_for_each_entry(nesdev, &nes_dev_list, list) {
964 if (i == ee_flsh_adapter) {
965 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
966 break;
967 }
968 i++;
969 }
970 }
971 return strnlen(buf, count);
972 }
973
974 static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
975 {
976 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
977 }
978
979 static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
980 const char *buf, size_t count)
981 {
982 char *p = (char *)buf;
983
984 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
985 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
986
987 return strnlen(buf, count);
988 }
989
990 static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
991 {
992 u32 nonidx_data = 0xdead;
993 u32 i = 0;
994 struct nes_device *nesdev;
995
996 list_for_each_entry(nesdev, &nes_dev_list, list) {
997 if (i == ee_flsh_adapter) {
998 nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
999 break;
1000 }
1001 i++;
1002 }
1003
1004 return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1005 }
1006
1007 static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1008 const char *buf, size_t count)
1009 {
1010 char *p = (char *)buf;
1011 u32 val;
1012 u32 i = 0;
1013 struct nes_device *nesdev;
1014
1015 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1016 val = simple_strtoul(p, &p, 16);
1017 list_for_each_entry(nesdev, &nes_dev_list, list) {
1018 if (i == ee_flsh_adapter) {
1019 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1020 break;
1021 }
1022 i++;
1023 }
1024 }
1025 return strnlen(buf, count);
1026 }
1027
1028 static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1029 {
1030 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1031 }
1032
1033 static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1034 const char *buf, size_t count)
1035 {
1036 char *p = (char *)buf;
1037
1038 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1039 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1040
1041 return strnlen(buf, count);
1042 }
1043
1044 static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1045 {
1046 u32 idx_data = 0xdead;
1047 u32 i = 0;
1048 struct nes_device *nesdev;
1049
1050 list_for_each_entry(nesdev, &nes_dev_list, list) {
1051 if (i == ee_flsh_adapter) {
1052 idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1053 break;
1054 }
1055 i++;
1056 }
1057
1058 return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1059 }
1060
1061 static ssize_t nes_store_idx_data(struct device_driver *ddp,
1062 const char *buf, size_t count)
1063 {
1064 char *p = (char *)buf;
1065 u32 val;
1066 u32 i = 0;
1067 struct nes_device *nesdev;
1068
1069 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1070 val = simple_strtoul(p, &p, 16);
1071 list_for_each_entry(nesdev, &nes_dev_list, list) {
1072 if (i == ee_flsh_adapter) {
1073 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1074 break;
1075 }
1076 i++;
1077 }
1078 }
1079 return strnlen(buf, count);
1080 }
1081
1082
1083 /**
1084 * nes_show_wqm_quanta
1085 */
1086 static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1087 {
1088 u32 wqm_quanta_value = 0xdead;
1089 u32 i = 0;
1090 struct nes_device *nesdev;
1091
1092 list_for_each_entry(nesdev, &nes_dev_list, list) {
1093 if (i == ee_flsh_adapter) {
1094 wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1095 break;
1096 }
1097 i++;
1098 }
1099
1100 return snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta_value);
1101 }
1102
1103
1104 /**
1105 * nes_store_wqm_quanta
1106 */
1107 static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1108 const char *buf, size_t count)
1109 {
1110 unsigned long wqm_quanta_value;
1111 u32 wqm_config1;
1112 u32 i = 0;
1113 struct nes_device *nesdev;
1114
1115 strict_strtoul(buf, 0, &wqm_quanta_value);
1116 list_for_each_entry(nesdev, &nes_dev_list, list) {
1117 if (i == ee_flsh_adapter) {
1118 nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1119 wqm_config1 = nes_read_indexed(nesdev,
1120 NES_IDX_WQM_CONFIG1);
1121 nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1122 ((wqm_quanta_value << 1) |
1123 (wqm_config1 & 0x00000001)));
1124 break;
1125 }
1126 i++;
1127 }
1128 return strnlen(buf, count);
1129 }
1130
1131 static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1132 nes_show_adapter, nes_store_adapter);
1133 static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1134 nes_show_ee_cmd, nes_store_ee_cmd);
1135 static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1136 nes_show_ee_data, nes_store_ee_data);
1137 static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1138 nes_show_flash_cmd, nes_store_flash_cmd);
1139 static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1140 nes_show_flash_data, nes_store_flash_data);
1141 static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1142 nes_show_nonidx_addr, nes_store_nonidx_addr);
1143 static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1144 nes_show_nonidx_data, nes_store_nonidx_data);
1145 static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1146 nes_show_idx_addr, nes_store_idx_addr);
1147 static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1148 nes_show_idx_data, nes_store_idx_data);
1149 static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1150 nes_show_wqm_quanta, nes_store_wqm_quanta);
1151
1152 static int nes_create_driver_sysfs(struct pci_driver *drv)
1153 {
1154 int error;
1155 error = driver_create_file(&drv->driver, &driver_attr_adapter);
1156 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1157 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1158 error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1159 error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1160 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1161 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1162 error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1163 error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1164 error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1165 return error;
1166 }
1167
1168 static void nes_remove_driver_sysfs(struct pci_driver *drv)
1169 {
1170 driver_remove_file(&drv->driver, &driver_attr_adapter);
1171 driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1172 driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1173 driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1174 driver_remove_file(&drv->driver, &driver_attr_flash_data);
1175 driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1176 driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1177 driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1178 driver_remove_file(&drv->driver, &driver_attr_idx_data);
1179 driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1180 }
1181
1182 /**
1183 * nes_init_module - module initialization entry point
1184 */
1185 static int __init nes_init_module(void)
1186 {
1187 int retval;
1188 int retval1;
1189
1190 retval = nes_cm_start();
1191 if (retval) {
1192 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1193 return retval;
1194 }
1195 retval = pci_register_driver(&nes_pci_driver);
1196 if (retval >= 0) {
1197 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1198 if (retval1 < 0)
1199 printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1200 }
1201 return retval;
1202 }
1203
1204
1205 /**
1206 * nes_exit_module - module unload entry point
1207 */
1208 static void __exit nes_exit_module(void)
1209 {
1210 nes_cm_stop();
1211 nes_remove_driver_sysfs(&nes_pci_driver);
1212
1213 pci_unregister_driver(&nes_pci_driver);
1214 }
1215
1216
1217 module_init(nes_init_module);
1218 module_exit(nes_exit_module);