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1/*
2 * Copyright (c) 2006 - 2011 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
63MODULE_AUTHOR("NetEffect");
64MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
65MODULE_LICENSE("Dual BSD/GPL");
66MODULE_VERSION(DRV_VERSION);
67
68int max_mtu = 9000;
69int interrupt_mod_interval = 0;
70
71
72/* Interoperability */
73int mpa_version = 1;
74module_param(mpa_version, int, 0644);
75MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
76
77/* Interoperability */
78int disable_mpa_crc = 0;
79module_param(disable_mpa_crc, int, 0644);
80MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
81
82unsigned int nes_drv_opt = NES_DRV_OPT_DISABLE_INT_MOD | NES_DRV_OPT_ENABLE_PAU;
83module_param(nes_drv_opt, int, 0644);
84MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
85
86unsigned int nes_debug_level = 0;
87module_param_named(debug_level, nes_debug_level, uint, 0644);
88MODULE_PARM_DESC(debug_level, "Enable debug output level");
89
90unsigned int wqm_quanta = 0x10000;
91module_param(wqm_quanta, int, 0644);
92MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
93
94static bool limit_maxrdreqsz;
95module_param(limit_maxrdreqsz, bool, 0644);
96MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
97
98LIST_HEAD(nes_adapter_list);
99static LIST_HEAD(nes_dev_list);
100
101atomic_t qps_destroyed;
102
103static unsigned int ee_flsh_adapter;
104static unsigned int sysfs_nonidx_addr;
105static unsigned int sysfs_idx_addr;
106
107static struct pci_device_id nes_pci_table[] = {
108 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020), },
109 { PCI_VDEVICE(NETEFFECT, PCI_DEVICE_ID_NETEFFECT_NE020_KR), },
110 {0}
111};
112
113MODULE_DEVICE_TABLE(pci, nes_pci_table);
114
115static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
116static int nes_net_event(struct notifier_block *, unsigned long, void *);
117static int nes_notifiers_registered;
118
119
120static struct notifier_block nes_inetaddr_notifier = {
121 .notifier_call = nes_inetaddr_event
122};
123
124static struct notifier_block nes_net_notifier = {
125 .notifier_call = nes_net_event
126};
127
128/**
129 * nes_inetaddr_event
130 */
131static int nes_inetaddr_event(struct notifier_block *notifier,
132 unsigned long event, void *ptr)
133{
134 struct in_ifaddr *ifa = ptr;
135 struct net_device *event_netdev = ifa->ifa_dev->dev;
136 struct nes_device *nesdev;
137 struct net_device *netdev;
138 struct net_device *upper_dev;
139 struct nes_vnic *nesvnic;
140 unsigned int is_bonded;
141
142 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address %pI4, netmask %pI4.\n",
143 &ifa->ifa_address, &ifa->ifa_mask);
144 list_for_each_entry(nesdev, &nes_dev_list, list) {
145 nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p. (%s)\n",
146 nesdev, nesdev->netdev[0]->name);
147 netdev = nesdev->netdev[0];
148 nesvnic = netdev_priv(netdev);
149 upper_dev = netdev_master_upper_dev_get(netdev);
150 is_bonded = netif_is_bond_slave(netdev) &&
151 (upper_dev == event_netdev);
152 if ((netdev == event_netdev) || is_bonded) {
153 if (nesvnic->rdma_enabled == 0) {
154 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
155 " RDMA is not enabled.\n",
156 netdev->name);
157 return NOTIFY_OK;
158 }
159 /* we have ifa->ifa_address/mask here if we need it */
160 switch (event) {
161 case NETDEV_DOWN:
162 nes_debug(NES_DBG_NETDEV, "event:DOWN\n");
163 nes_write_indexed(nesdev,
164 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)), 0);
165
166 nes_manage_arp_cache(netdev, netdev->dev_addr,
167 ntohl(nesvnic->local_ipaddr), NES_ARP_DELETE);
168 nesvnic->local_ipaddr = 0;
169 if (is_bonded)
170 continue;
171 else
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 /* fall through */
182 case NETDEV_CHANGEADDR:
183 /* Add the address to the IP table */
184 if (upper_dev)
185 nesvnic->local_ipaddr =
186 ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address;
187 else
188 nesvnic->local_ipaddr = ifa->ifa_address;
189
190 nes_write_indexed(nesdev,
191 NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),
192 ntohl(nesvnic->local_ipaddr));
193 nes_manage_arp_cache(netdev, netdev->dev_addr,
194 ntohl(nesvnic->local_ipaddr), NES_ARP_ADD);
195 if (is_bonded)
196 continue;
197 else
198 return NOTIFY_OK;
199 break;
200 default:
201 break;
202 }
203 }
204 }
205
206 return NOTIFY_DONE;
207}
208
209
210/**
211 * nes_net_event
212 */
213static int nes_net_event(struct notifier_block *notifier,
214 unsigned long event, void *ptr)
215{
216 struct neighbour *neigh = ptr;
217 struct nes_device *nesdev;
218 struct net_device *netdev;
219 struct nes_vnic *nesvnic;
220
221 switch (event) {
222 case NETEVENT_NEIGH_UPDATE:
223 list_for_each_entry(nesdev, &nes_dev_list, list) {
224 /* nes_debug(NES_DBG_NETDEV, "Nesdev list entry = 0x%p.\n", nesdev); */
225 netdev = nesdev->netdev[0];
226 nesvnic = netdev_priv(netdev);
227 if (netdev == neigh->dev) {
228 if (nesvnic->rdma_enabled == 0) {
229 nes_debug(NES_DBG_NETDEV, "Skipping device %s since no RDMA\n",
230 netdev->name);
231 } else {
232 if (neigh->nud_state & NUD_VALID) {
233 nes_manage_arp_cache(neigh->dev, neigh->ha,
234 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_ADD);
235 } else {
236 nes_manage_arp_cache(neigh->dev, neigh->ha,
237 ntohl(*(__be32 *)neigh->primary_key), NES_ARP_DELETE);
238 }
239 }
240 return NOTIFY_OK;
241 }
242 }
243 break;
244 default:
245 nes_debug(NES_DBG_NETDEV, "NETEVENT_ %lu undefined\n", event);
246 break;
247 }
248
249 return NOTIFY_DONE;
250}
251
252
253/**
254 * nes_add_ref
255 */
256void nes_add_ref(struct ib_qp *ibqp)
257{
258 struct nes_qp *nesqp;
259
260 nesqp = to_nesqp(ibqp);
261 nes_debug(NES_DBG_QP, "Bumping refcount for QP%u. Pre-inc value = %u\n",
262 ibqp->qp_num, atomic_read(&nesqp->refcount));
263 atomic_inc(&nesqp->refcount);
264}
265
266static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_request *cqp_request)
267{
268 unsigned long flags;
269 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
270 struct nes_adapter *nesadapter = nesdev->nesadapter;
271
272 atomic_inc(&qps_destroyed);
273
274 /* Free the control structures */
275
276 if (nesqp->pbl_vbase) {
277 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
278 nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
279 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
280 nesadapter->free_256pbl++;
281 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
282 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
283 nesqp->pbl_vbase = NULL;
284
285 } else {
286 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
287 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
288 }
289 nes_free_resource(nesadapter, nesadapter->allocated_qps, nesqp->hwqp.qp_id);
290
291 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
292 kfree(nesqp->allocated_buffer);
293
294}
295
296/**
297 * nes_rem_ref
298 */
299void nes_rem_ref(struct ib_qp *ibqp)
300{
301 u64 u64temp;
302 struct nes_qp *nesqp;
303 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
304 struct nes_device *nesdev = nesvnic->nesdev;
305 struct nes_hw_cqp_wqe *cqp_wqe;
306 struct nes_cqp_request *cqp_request;
307 u32 opcode;
308
309 nesqp = to_nesqp(ibqp);
310
311 if (atomic_read(&nesqp->refcount) == 0) {
312 printk(KERN_INFO PFX "%s: Reference count already 0 for QP%d, last aeq = 0x%04X.\n",
313 __func__, ibqp->qp_num, nesqp->last_aeq);
314 BUG();
315 }
316
317 if (atomic_dec_and_test(&nesqp->refcount)) {
318 if (nesqp->pau_mode)
319 nes_destroy_pau_qp(nesdev, nesqp);
320
321 /* Destroy the QP */
322 cqp_request = nes_get_cqp_request(nesdev);
323 if (cqp_request == NULL) {
324 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
325 return;
326 }
327 cqp_request->waiting = 0;
328 cqp_request->callback = 1;
329 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
330 cqp_request->cqp_callback_pointer = nesqp;
331 cqp_wqe = &cqp_request->cqp_wqe;
332
333 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
334 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
335
336 if (nesqp->hte_added) {
337 opcode |= NES_CQP_QP_DEL_HTE;
338 nesqp->hte_added = 0;
339 }
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
341 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
342 u64temp = (u64)nesqp->nesqp_context_pbase;
343 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
344 nes_post_cqp_request(nesdev, cqp_request);
345 }
346}
347
348
349/**
350 * nes_get_qp
351 */
352struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
353{
354 struct nes_vnic *nesvnic = to_nesvnic(device);
355 struct nes_device *nesdev = nesvnic->nesdev;
356 struct nes_adapter *nesadapter = nesdev->nesadapter;
357
358 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
359 return NULL;
360
361 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
362}
363
364
365/**
366 * nes_print_macaddr
367 */
368static void nes_print_macaddr(struct net_device *netdev)
369{
370 nes_debug(NES_DBG_INIT, "%s: %pM, IRQ %u\n",
371 netdev->name, netdev->dev_addr, netdev->irq);
372}
373
374/**
375 * nes_interrupt - handle interrupts
376 */
377static irqreturn_t nes_interrupt(int irq, void *dev_id)
378{
379 struct nes_device *nesdev = (struct nes_device *)dev_id;
380 int handled = 0;
381 u32 int_mask;
382 u32 int_req;
383 u32 int_stat;
384 u32 intf_int_stat;
385 u32 timer_stat;
386
387 if (nesdev->msi_enabled) {
388 /* No need to read the interrupt pending register if msi is enabled */
389 handled = 1;
390 } else {
391 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
392 /* Master interrupt enable provides synchronization for kicking off bottom half
393 when interrupt sharing is going on */
394 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
395 if (int_mask & 0x80000000) {
396 /* Check interrupt status to see if this might be ours */
397 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
398 int_req = nesdev->int_req;
399 if (int_stat&int_req) {
400 /* if interesting CEQ or AEQ is pending, claim the interrupt */
401 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
402 handled = 1;
403 } else {
404 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
405 /* Timer might be running but might be for another function */
406 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
407 if ((timer_stat & nesdev->timer_int_req) != 0) {
408 handled = 1;
409 }
410 }
411 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
412 (handled == 0)) {
413 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
414 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
415 handled = 1;
416 }
417 }
418 }
419 if (handled) {
420 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
421 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
422 /* Save off the status to save an additional read */
423 nesdev->int_stat = int_stat;
424 nesdev->napi_isr_ran = 1;
425 }
426 }
427 }
428 } else {
429 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
430 }
431 }
432
433 if (handled) {
434
435 if (nes_napi_isr(nesdev) == 0) {
436 tasklet_schedule(&nesdev->dpc_tasklet);
437
438 }
439 return IRQ_HANDLED;
440 } else {
441 return IRQ_NONE;
442 }
443}
444
445
446/**
447 * nes_probe - Device initialization
448 */
449static int nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
450{
451 struct net_device *netdev = NULL;
452 struct nes_device *nesdev = NULL;
453 int ret = 0;
454 void __iomem *mmio_regs = NULL;
455 u8 hw_rev;
456
457 assert(pcidev != NULL);
458 assert(ent != NULL);
459
460 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
461 DRV_VERSION, pci_name(pcidev));
462
463 ret = pci_enable_device(pcidev);
464 if (ret) {
465 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
466 goto bail0;
467 }
468
469 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
470 (long unsigned int)pci_resource_start(pcidev, BAR_0),
471 (long unsigned int)pci_resource_len(pcidev, BAR_0));
472 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
473 (long unsigned int)pci_resource_start(pcidev, BAR_1),
474 (long unsigned int)pci_resource_len(pcidev, BAR_1));
475
476 /* Make sure PCI base addr are MMIO */
477 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
478 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
479 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
480 ret = -ENODEV;
481 goto bail1;
482 }
483
484 /* Reserve PCI I/O and memory resources */
485 ret = pci_request_regions(pcidev, DRV_NAME);
486 if (ret) {
487 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
488 goto bail1;
489 }
490
491 if ((sizeof(dma_addr_t) > 4)) {
492 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
493 if (ret < 0) {
494 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
495 goto bail2;
496 }
497 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
498 if (ret) {
499 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
500 goto bail2;
501 }
502 } else {
503 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
504 if (ret < 0) {
505 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
506 goto bail2;
507 }
508 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
509 if (ret) {
510 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
511 goto bail2;
512 }
513 }
514
515 pci_set_master(pcidev);
516
517 /* Allocate hardware structure */
518 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
519 if (!nesdev) {
520 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
521 ret = -ENOMEM;
522 goto bail2;
523 }
524
525 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
526 nesdev->pcidev = pcidev;
527 pci_set_drvdata(pcidev, nesdev);
528
529 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
530 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
531
532 spin_lock_init(&nesdev->indexed_regs_lock);
533
534 /* Remap the PCI registers in adapter BAR0 to kernel VA space */
535 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0),
536 pci_resource_len(pcidev, BAR_0));
537 if (mmio_regs == NULL) {
538 printk(KERN_ERR PFX "Unable to remap BAR0\n");
539 ret = -EIO;
540 goto bail3;
541 }
542 nesdev->regs = mmio_regs;
543 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
544
545 /* Ensure interrupts are disabled */
546 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
547
548 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
549 if (!pci_enable_msi(nesdev->pcidev)) {
550 nesdev->msi_enabled = 1;
551 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
552 pci_name(pcidev));
553 } else {
554 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
555 pci_name(pcidev));
556 }
557 } else {
558 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
559 pci_name(pcidev));
560 }
561
562 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
563 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
564
565 /* Init the adapter */
566 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
567 if (!nesdev->nesadapter) {
568 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
569 ret = -ENOMEM;
570 goto bail5;
571 }
572 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
573 nesdev->nesadapter->wqm_quanta = wqm_quanta;
574
575 /* nesdev->base_doorbell_index =
576 nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
577 nesdev->base_doorbell_index = 1;
578 nesdev->doorbell_start = nesdev->nesadapter->doorbell_start;
579 if (nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
580 switch (PCI_FUNC(nesdev->pcidev->devfn) %
581 nesdev->nesadapter->port_count) {
582 case 1:
583 nesdev->mac_index = 2;
584 break;
585 case 2:
586 nesdev->mac_index = 1;
587 break;
588 case 3:
589 nesdev->mac_index = 3;
590 break;
591 case 0:
592 default:
593 nesdev->mac_index = 0;
594 }
595 } else {
596 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) %
597 nesdev->nesadapter->port_count;
598 }
599
600 if ((limit_maxrdreqsz ||
601 ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
602 (hw_rev == NE020_REV1))) &&
603 (pcie_get_readrq(pcidev) > 256)) {
604 if (pcie_set_readrq(pcidev, 256))
605 printk(KERN_ERR PFX "Unable to set max read request"
606 " to 256 bytes\n");
607 else
608 nes_debug(NES_DBG_INIT, "Max read request size set"
609 " to 256 bytes\n");
610 }
611
612 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
613
614 /* bring up the Control QP */
615 if (nes_init_cqp(nesdev)) {
616 ret = -ENODEV;
617 goto bail6;
618 }
619
620 /* Arm the CCQ */
621 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
622 PCI_FUNC(nesdev->pcidev->devfn));
623 nes_read32(nesdev->regs+NES_CQE_ALLOC);
624
625 /* Enable the interrupts */
626 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
627 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
628 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
629 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->mac_index)+24));
630 }
631
632 /* TODO: This really should be the first driver to load, not function 0 */
633 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
634 /* pick up PCI and critical errors if the first driver to load */
635 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
636 nesdev->int_req |= NES_INT_INTF;
637 } else {
638 nesdev->intf_int_req = 0;
639 }
640 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
641 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
642 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
643 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
644 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
645
646 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
647
648 /* deal with both periodic and one_shot */
649 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
650 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
651 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
652 PCI_FUNC(nesdev->pcidev->devfn),
653 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
654
655 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
656
657 list_add_tail(&nesdev->list, &nes_dev_list);
658
659 /* Request an interrupt line for the driver */
660 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
661 if (ret) {
662 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
663 pci_name(pcidev), pcidev->irq);
664 goto bail65;
665 }
666
667 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
668
669 if (nes_notifiers_registered == 0) {
670 register_inetaddr_notifier(&nes_inetaddr_notifier);
671 register_netevent_notifier(&nes_net_notifier);
672 }
673 nes_notifiers_registered++;
674
675 INIT_DELAYED_WORK(&nesdev->work, nes_recheck_link_status);
676
677 /* Initialize network devices */
678 netdev = nes_netdev_init(nesdev, mmio_regs);
679 if (netdev == NULL) {
680 ret = -ENOMEM;
681 goto bail7;
682 }
683
684 /* Register network device */
685 ret = register_netdev(netdev);
686 if (ret) {
687 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
688 nes_netdev_destroy(netdev);
689 goto bail7;
690 }
691
692 nes_print_macaddr(netdev);
693
694 nesdev->netdev_count++;
695 nesdev->nesadapter->netdev_count++;
696
697 printk(KERN_INFO PFX "%s: NetEffect RNIC driver successfully loaded.\n",
698 pci_name(pcidev));
699 return 0;
700
701 bail7:
702 printk(KERN_ERR PFX "bail7\n");
703 while (nesdev->netdev_count > 0) {
704 nesdev->netdev_count--;
705 nesdev->nesadapter->netdev_count--;
706
707 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
708 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
709 }
710
711 nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
712 nesdev->netdev_count, nesdev->nesadapter->netdev_count);
713
714 nes_notifiers_registered--;
715 if (nes_notifiers_registered == 0) {
716 unregister_netevent_notifier(&nes_net_notifier);
717 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
718 }
719
720 list_del(&nesdev->list);
721 nes_destroy_cqp(nesdev);
722
723 bail65:
724 printk(KERN_ERR PFX "bail65\n");
725 free_irq(pcidev->irq, nesdev);
726 if (nesdev->msi_enabled) {
727 pci_disable_msi(pcidev);
728 }
729 bail6:
730 printk(KERN_ERR PFX "bail6\n");
731 tasklet_kill(&nesdev->dpc_tasklet);
732 /* Deallocate the Adapter Structure */
733 nes_destroy_adapter(nesdev->nesadapter);
734
735 bail5:
736 printk(KERN_ERR PFX "bail5\n");
737 iounmap(nesdev->regs);
738
739 bail3:
740 printk(KERN_ERR PFX "bail3\n");
741 kfree(nesdev);
742
743 bail2:
744 pci_release_regions(pcidev);
745
746 bail1:
747 pci_disable_device(pcidev);
748
749 bail0:
750 return ret;
751}
752
753
754/**
755 * nes_remove - unload from kernel
756 */
757static void nes_remove(struct pci_dev *pcidev)
758{
759 struct nes_device *nesdev = pci_get_drvdata(pcidev);
760 struct net_device *netdev;
761 int netdev_index = 0;
762 unsigned long flags;
763
764 if (nesdev->netdev_count) {
765 netdev = nesdev->netdev[netdev_index];
766 if (netdev) {
767 netif_stop_queue(netdev);
768 unregister_netdev(netdev);
769 nes_netdev_destroy(netdev);
770
771 nesdev->netdev[netdev_index] = NULL;
772 nesdev->netdev_count--;
773 nesdev->nesadapter->netdev_count--;
774 }
775 }
776
777 nes_notifiers_registered--;
778 if (nes_notifiers_registered == 0) {
779 unregister_netevent_notifier(&nes_net_notifier);
780 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
781 }
782
783 list_del(&nesdev->list);
784 nes_destroy_cqp(nesdev);
785
786 free_irq(pcidev->irq, nesdev);
787 tasklet_kill(&nesdev->dpc_tasklet);
788
789 spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
790 if (nesdev->link_recheck) {
791 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
792 cancel_delayed_work_sync(&nesdev->work);
793 } else {
794 spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
795 }
796
797 /* Deallocate the Adapter Structure */
798 nes_destroy_adapter(nesdev->nesadapter);
799
800 if (nesdev->msi_enabled) {
801 pci_disable_msi(pcidev);
802 }
803
804 iounmap(nesdev->regs);
805 kfree(nesdev);
806
807 /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
808 pci_release_regions(pcidev);
809 pci_disable_device(pcidev);
810 pci_set_drvdata(pcidev, NULL);
811}
812
813
814static struct pci_driver nes_pci_driver = {
815 .name = DRV_NAME,
816 .id_table = nes_pci_table,
817 .probe = nes_probe,
818 .remove = nes_remove,
819};
820
821static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
822{
823 unsigned int devfn = 0xffffffff;
824 unsigned char bus_number = 0xff;
825 unsigned int i = 0;
826 struct nes_device *nesdev;
827
828 list_for_each_entry(nesdev, &nes_dev_list, list) {
829 if (i == ee_flsh_adapter) {
830 devfn = nesdev->pcidev->devfn;
831 bus_number = nesdev->pcidev->bus->number;
832 break;
833 }
834 i++;
835 }
836
837 return snprintf(buf, PAGE_SIZE, "%x:%x\n", bus_number, devfn);
838}
839
840static ssize_t nes_store_adapter(struct device_driver *ddp,
841 const char *buf, size_t count)
842{
843 char *p = (char *)buf;
844
845 ee_flsh_adapter = simple_strtoul(p, &p, 10);
846 return strnlen(buf, count);
847}
848
849static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
850{
851 u32 eeprom_cmd = 0xdead;
852 u32 i = 0;
853 struct nes_device *nesdev;
854
855 list_for_each_entry(nesdev, &nes_dev_list, list) {
856 if (i == ee_flsh_adapter) {
857 eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
858 break;
859 }
860 i++;
861 }
862 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
863}
864
865static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
866 const char *buf, size_t count)
867{
868 char *p = (char *)buf;
869 u32 val;
870 u32 i = 0;
871 struct nes_device *nesdev;
872
873 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
874 val = simple_strtoul(p, &p, 16);
875 list_for_each_entry(nesdev, &nes_dev_list, list) {
876 if (i == ee_flsh_adapter) {
877 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
878 break;
879 }
880 i++;
881 }
882 }
883 return strnlen(buf, count);
884}
885
886static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
887{
888 u32 eeprom_data = 0xdead;
889 u32 i = 0;
890 struct nes_device *nesdev;
891
892 list_for_each_entry(nesdev, &nes_dev_list, list) {
893 if (i == ee_flsh_adapter) {
894 eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
895 break;
896 }
897 i++;
898 }
899
900 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
901}
902
903static ssize_t nes_store_ee_data(struct device_driver *ddp,
904 const char *buf, size_t count)
905{
906 char *p = (char *)buf;
907 u32 val;
908 u32 i = 0;
909 struct nes_device *nesdev;
910
911 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
912 val = simple_strtoul(p, &p, 16);
913 list_for_each_entry(nesdev, &nes_dev_list, list) {
914 if (i == ee_flsh_adapter) {
915 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
916 break;
917 }
918 i++;
919 }
920 }
921 return strnlen(buf, count);
922}
923
924static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
925{
926 u32 flash_cmd = 0xdead;
927 u32 i = 0;
928 struct nes_device *nesdev;
929
930 list_for_each_entry(nesdev, &nes_dev_list, list) {
931 if (i == ee_flsh_adapter) {
932 flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
933 break;
934 }
935 i++;
936 }
937
938 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
939}
940
941static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
942 const char *buf, size_t count)
943{
944 char *p = (char *)buf;
945 u32 val;
946 u32 i = 0;
947 struct nes_device *nesdev;
948
949 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
950 val = simple_strtoul(p, &p, 16);
951 list_for_each_entry(nesdev, &nes_dev_list, list) {
952 if (i == ee_flsh_adapter) {
953 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
954 break;
955 }
956 i++;
957 }
958 }
959 return strnlen(buf, count);
960}
961
962static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
963{
964 u32 flash_data = 0xdead;
965 u32 i = 0;
966 struct nes_device *nesdev;
967
968 list_for_each_entry(nesdev, &nes_dev_list, list) {
969 if (i == ee_flsh_adapter) {
970 flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
971 break;
972 }
973 i++;
974 }
975
976 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
977}
978
979static ssize_t nes_store_flash_data(struct device_driver *ddp,
980 const char *buf, size_t count)
981{
982 char *p = (char *)buf;
983 u32 val;
984 u32 i = 0;
985 struct nes_device *nesdev;
986
987 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
988 val = simple_strtoul(p, &p, 16);
989 list_for_each_entry(nesdev, &nes_dev_list, list) {
990 if (i == ee_flsh_adapter) {
991 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
992 break;
993 }
994 i++;
995 }
996 }
997 return strnlen(buf, count);
998}
999
1000static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
1001{
1002 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
1003}
1004
1005static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
1006 const char *buf, size_t count)
1007{
1008 char *p = (char *)buf;
1009
1010 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1011 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
1012
1013 return strnlen(buf, count);
1014}
1015
1016static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
1017{
1018 u32 nonidx_data = 0xdead;
1019 u32 i = 0;
1020 struct nes_device *nesdev;
1021
1022 list_for_each_entry(nesdev, &nes_dev_list, list) {
1023 if (i == ee_flsh_adapter) {
1024 nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
1025 break;
1026 }
1027 i++;
1028 }
1029
1030 return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
1031}
1032
1033static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
1034 const char *buf, size_t count)
1035{
1036 char *p = (char *)buf;
1037 u32 val;
1038 u32 i = 0;
1039 struct nes_device *nesdev;
1040
1041 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1042 val = simple_strtoul(p, &p, 16);
1043 list_for_each_entry(nesdev, &nes_dev_list, list) {
1044 if (i == ee_flsh_adapter) {
1045 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
1046 break;
1047 }
1048 i++;
1049 }
1050 }
1051 return strnlen(buf, count);
1052}
1053
1054static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1055{
1056 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1057}
1058
1059static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1060 const char *buf, size_t count)
1061{
1062 char *p = (char *)buf;
1063
1064 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1065 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1066
1067 return strnlen(buf, count);
1068}
1069
1070static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1071{
1072 u32 idx_data = 0xdead;
1073 u32 i = 0;
1074 struct nes_device *nesdev;
1075
1076 list_for_each_entry(nesdev, &nes_dev_list, list) {
1077 if (i == ee_flsh_adapter) {
1078 idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1079 break;
1080 }
1081 i++;
1082 }
1083
1084 return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1085}
1086
1087static ssize_t nes_store_idx_data(struct device_driver *ddp,
1088 const char *buf, size_t count)
1089{
1090 char *p = (char *)buf;
1091 u32 val;
1092 u32 i = 0;
1093 struct nes_device *nesdev;
1094
1095 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1096 val = simple_strtoul(p, &p, 16);
1097 list_for_each_entry(nesdev, &nes_dev_list, list) {
1098 if (i == ee_flsh_adapter) {
1099 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1100 break;
1101 }
1102 i++;
1103 }
1104 }
1105 return strnlen(buf, count);
1106}
1107
1108
1109/**
1110 * nes_show_wqm_quanta
1111 */
1112static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
1113{
1114 u32 wqm_quanta_value = 0xdead;
1115 u32 i = 0;
1116 struct nes_device *nesdev;
1117
1118 list_for_each_entry(nesdev, &nes_dev_list, list) {
1119 if (i == ee_flsh_adapter) {
1120 wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
1121 break;
1122 }
1123 i++;
1124 }
1125
1126 return snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta_value);
1127}
1128
1129
1130/**
1131 * nes_store_wqm_quanta
1132 */
1133static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
1134 const char *buf, size_t count)
1135{
1136 unsigned long wqm_quanta_value;
1137 u32 wqm_config1;
1138 u32 i = 0;
1139 struct nes_device *nesdev;
1140
1141 if (kstrtoul(buf, 0, &wqm_quanta_value) < 0)
1142 return -EINVAL;
1143
1144 list_for_each_entry(nesdev, &nes_dev_list, list) {
1145 if (i == ee_flsh_adapter) {
1146 nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
1147 wqm_config1 = nes_read_indexed(nesdev,
1148 NES_IDX_WQM_CONFIG1);
1149 nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
1150 ((wqm_quanta_value << 1) |
1151 (wqm_config1 & 0x00000001)));
1152 break;
1153 }
1154 i++;
1155 }
1156 return strnlen(buf, count);
1157}
1158
1159static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1160 nes_show_adapter, nes_store_adapter);
1161static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1162 nes_show_ee_cmd, nes_store_ee_cmd);
1163static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1164 nes_show_ee_data, nes_store_ee_data);
1165static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1166 nes_show_flash_cmd, nes_store_flash_cmd);
1167static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1168 nes_show_flash_data, nes_store_flash_data);
1169static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1170 nes_show_nonidx_addr, nes_store_nonidx_addr);
1171static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1172 nes_show_nonidx_data, nes_store_nonidx_data);
1173static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1174 nes_show_idx_addr, nes_store_idx_addr);
1175static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1176 nes_show_idx_data, nes_store_idx_data);
1177static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
1178 nes_show_wqm_quanta, nes_store_wqm_quanta);
1179
1180static int nes_create_driver_sysfs(struct pci_driver *drv)
1181{
1182 int error;
1183 error = driver_create_file(&drv->driver, &driver_attr_adapter);
1184 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1185 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1186 error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1187 error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1188 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1189 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1190 error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1191 error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1192 error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
1193 return error;
1194}
1195
1196static void nes_remove_driver_sysfs(struct pci_driver *drv)
1197{
1198 driver_remove_file(&drv->driver, &driver_attr_adapter);
1199 driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1200 driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1201 driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1202 driver_remove_file(&drv->driver, &driver_attr_flash_data);
1203 driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1204 driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1205 driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1206 driver_remove_file(&drv->driver, &driver_attr_idx_data);
1207 driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
1208}
1209
1210/**
1211 * nes_init_module - module initialization entry point
1212 */
1213static int __init nes_init_module(void)
1214{
1215 int retval;
1216 int retval1;
1217
1218 retval = nes_cm_start();
1219 if (retval) {
1220 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1221 return retval;
1222 }
1223 retval = pci_register_driver(&nes_pci_driver);
1224 if (retval >= 0) {
1225 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1226 if (retval1 < 0)
1227 printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1228 }
1229 return retval;
1230}
1231
1232
1233/**
1234 * nes_exit_module - module unload entry point
1235 */
1236static void __exit nes_exit_module(void)
1237{
1238 nes_cm_stop();
1239 nes_remove_driver_sysfs(&nes_pci_driver);
1240
1241 pci_unregister_driver(&nes_pci_driver);
1242}
1243
1244
1245module_init(nes_init_module);
1246module_exit(nes_exit_module);