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RDMA/nes: Get rid of ring_doorbell parameter of nes_post_cqp_request()
[linux-block.git] / drivers / infiniband / hw / nes / nes.c
CommitLineData
3c2d774c
GS		 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
62MODULE_AUTHOR("NetEffect");
63MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
64MODULE_LICENSE("Dual BSD/GPL");
65MODULE_VERSION(DRV_VERSION);
66
67int max_mtu = 9000;
3c2d774c
GS		 68int interrupt_mod_interval = 0;
69
70
71/* Interoperability */
72int mpa_version = 1;
73module_param(mpa_version, int, 0);
74MODULE_PARM_DESC(mpa_version, "MPA version to be used int MPA Req/Resp (0 or 1)");
75
76/* Interoperability */
77int disable_mpa_crc = 0;
78module_param(disable_mpa_crc, int, 0);
79MODULE_PARM_DESC(disable_mpa_crc, "Disable checking of MPA CRC");
80
81unsigned int send_first = 0;
82module_param(send_first, int, 0);
83MODULE_PARM_DESC(send_first, "Send RDMA Message First on Active Connection");
84
85
86unsigned int nes_drv_opt = 0;
87module_param(nes_drv_opt, int, 0);
88MODULE_PARM_DESC(nes_drv_opt, "Driver option parameters");
89
90unsigned int nes_debug_level = 0;
91module_param_named(debug_level, nes_debug_level, uint, 0644);
92MODULE_PARM_DESC(debug_level, "Enable debug output level");
93
94LIST_HEAD(nes_adapter_list);
1a855fbf 95static LIST_HEAD(nes_dev_list);
3c2d774c
GS		 96
97atomic_t qps_destroyed;
3c2d774c 98
3c2d774c
GS		 99static unsigned int ee_flsh_adapter;
100static unsigned int sysfs_nonidx_addr;
101static unsigned int sysfs_idx_addr;
102
103static 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
108MODULE_DEVICE_TABLE(pci, nes_pci_table);
109
110static int nes_inetaddr_event(struct notifier_block *, unsigned long, void *);
111static int nes_net_event(struct notifier_block *, unsigned long, void *);
112static int nes_notifiers_registered;
113
114
115static struct notifier_block nes_inetaddr_notifier = {
116 .notifier_call = nes_inetaddr_event
117};
118
119static struct notifier_block nes_net_notifier = {
120 .notifier_call = nes_net_event
121};
122
123
124
125
126/**
127 * nes_inetaddr_event
128 */
129static 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);
e4477031
RD		 142 nes_debug(NES_DBG_NETDEV, "nes_inetaddr_event: ip address " NIPQUAD_FMT
143 ", netmask " NIPQUAD_FMT ".\n",
144 HIPQUAD(addr), HIPQUAD(mask));
3c2d774c
GS		 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 */
199static 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 */
242void 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
252static 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 kfree(nesqp->allocated_buffer);
280
281}
282
283/**
284 * nes_rem_ref
285 */
286void nes_rem_ref(struct ib_qp *ibqp)
287{
288 u64 u64temp;
289 struct nes_qp *nesqp;
290 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
291 struct nes_device *nesdev = nesvnic->nesdev;
292 struct nes_adapter *nesadapter = nesdev->nesadapter;
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",
33718363 301 __func__, ibqp->qp_num, nesqp->last_aeq);
3c2d774c
GS		 302 BUG();
303 }
304
305 if (atomic_dec_and_test(&nesqp->refcount)) {
306 nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = NULL;
307
308 /* Destroy the QP */
309 cqp_request = nes_get_cqp_request(nesdev);
310 if (cqp_request == NULL) {
311 nes_debug(NES_DBG_QP, "Failed to get a cqp_request.\n");
312 return;
313 }
314 cqp_request->waiting = 0;
315 cqp_request->callback = 1;
316 cqp_request->cqp_callback = nes_cqp_rem_ref_callback;
317 cqp_request->cqp_callback_pointer = nesqp;
318 cqp_wqe = &cqp_request->cqp_wqe;
319
320 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
321 opcode = NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_IWARP;
322
323 if (nesqp->hte_added) {
324 opcode |= NES_CQP_QP_DEL_HTE;
325 nesqp->hte_added = 0;
326 }
327 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
328 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
329 u64temp = (u64)nesqp->nesqp_context_pbase;
330 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
8294f297 331 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 332 }
333}
334
335
336/**
337 * nes_get_qp
338 */
339struct ib_qp *nes_get_qp(struct ib_device *device, int qpn)
340{
341 struct nes_vnic *nesvnic = to_nesvnic(device);
342 struct nes_device *nesdev = nesvnic->nesdev;
343 struct nes_adapter *nesadapter = nesdev->nesadapter;
344
345 if ((qpn < NES_FIRST_QPN) || (qpn >= (NES_FIRST_QPN + nesadapter->max_qp)))
346 return NULL;
347
348 return &nesadapter->qp_table[qpn - NES_FIRST_QPN]->ibqp;
349}
350
351
352/**
353 * nes_print_macaddr
354 */
355static void nes_print_macaddr(struct net_device *netdev)
356{
2bd01c5d 357 DECLARE_MAC_BUF(mac);
3c2d774c 358
2bd01c5d
RD		 359 nes_debug(NES_DBG_INIT, "%s: %s, IRQ %u\n",
360 netdev->name, print_mac(mac, netdev->dev_addr), netdev->irq);
361}
3c2d774c
GS		 362
363/**
364 * nes_interrupt - handle interrupts
365 */
366static irqreturn_t nes_interrupt(int irq, void *dev_id)
367{
368 struct nes_device *nesdev = (struct nes_device *)dev_id;
369 int handled = 0;
370 u32 int_mask;
371 u32 int_req;
372 u32 int_stat;
373 u32 intf_int_stat;
374 u32 timer_stat;
375
376 if (nesdev->msi_enabled) {
377 /* No need to read the interrupt pending register if msi is enabled */
378 handled = 1;
379 } else {
380 if (unlikely(nesdev->nesadapter->hw_rev == NE020_REV)) {
381 /* Master interrupt enable provides synchronization for kicking off bottom half
382 when interrupt sharing is going on */
383 int_mask = nes_read32(nesdev->regs + NES_INT_MASK);
384 if (int_mask & 0x80000000) {
385 /* Check interrupt status to see if this might be ours */
386 int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
387 int_req = nesdev->int_req;
388 if (int_stat&int_req) {
389 /* if interesting CEQ or AEQ is pending, claim the interrupt */
390 if ((int_stat&int_req) & (~(NES_INT_TIMER|NES_INT_INTF))) {
391 handled = 1;
392 } else {
393 if (((int_stat & int_req) & NES_INT_TIMER) == NES_INT_TIMER) {
394 /* Timer might be running but might be for another function */
395 timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
396 if ((timer_stat & nesdev->timer_int_req) != 0) {
397 handled = 1;
398 }
399 }
400 if ((((int_stat & int_req) & NES_INT_INTF) == NES_INT_INTF) &&
401 (handled == 0)) {
402 intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
403 if ((intf_int_stat & nesdev->intf_int_req) != 0) {
404 handled = 1;
405 }
406 }
407 }
408 if (handled) {
409 nes_write32(nesdev->regs+NES_INT_MASK, int_mask & (~0x80000000));
410 int_mask = nes_read32(nesdev->regs+NES_INT_MASK);
411 /* Save off the status to save an additional read */
412 nesdev->int_stat = int_stat;
413 nesdev->napi_isr_ran = 1;
414 }
415 }
416 }
417 } else {
418 handled = nes_read32(nesdev->regs+NES_INT_PENDING);
419 }
420 }
421
422 if (handled) {
423
424 if (nes_napi_isr(nesdev) == 0) {
425 tasklet_schedule(&nesdev->dpc_tasklet);
426
427 }
428 return IRQ_HANDLED;
429 } else {
430 return IRQ_NONE;
431 }
432}
433
434
435/**
436 * nes_probe - Device initialization
437 */
438static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
439{
440 struct net_device *netdev = NULL;
441 struct nes_device *nesdev = NULL;
442 int ret = 0;
443 struct nes_vnic *nesvnic = NULL;
444 void __iomem *mmio_regs = NULL;
445 u8 hw_rev;
446
447 assert(pcidev != NULL);
448 assert(ent != NULL);
449
450 printk(KERN_INFO PFX "NetEffect RNIC driver v%s loading. (%s)\n",
451 DRV_VERSION, pci_name(pcidev));
452
453 ret = pci_enable_device(pcidev);
454 if (ret) {
455 printk(KERN_ERR PFX "Unable to enable PCI device. (%s)\n", pci_name(pcidev));
456 goto bail0;
457 }
458
459 nes_debug(NES_DBG_INIT, "BAR0 (@0x%08lX) size = 0x%lX bytes\n",
460 (long unsigned int)pci_resource_start(pcidev, BAR_0),
461 (long unsigned int)pci_resource_len(pcidev, BAR_0));
462 nes_debug(NES_DBG_INIT, "BAR1 (@0x%08lX) size = 0x%lX bytes\n",
463 (long unsigned int)pci_resource_start(pcidev, BAR_1),
464 (long unsigned int)pci_resource_len(pcidev, BAR_1));
465
466 /* Make sure PCI base addr are MMIO */
467 if (!(pci_resource_flags(pcidev, BAR_0) & IORESOURCE_MEM) ||
468 !(pci_resource_flags(pcidev, BAR_1) & IORESOURCE_MEM)) {
469 printk(KERN_ERR PFX "PCI regions not an MMIO resource\n");
470 ret = -ENODEV;
471 goto bail1;
472 }
473
474 /* Reserve PCI I/O and memory resources */
475 ret = pci_request_regions(pcidev, DRV_NAME);
476 if (ret) {
477 printk(KERN_ERR PFX "Unable to request regions. (%s)\n", pci_name(pcidev));
478 goto bail1;
479 }
480
481 if ((sizeof(dma_addr_t) > 4)) {
482 ret = pci_set_dma_mask(pcidev, DMA_64BIT_MASK);
483 if (ret < 0) {
484 printk(KERN_ERR PFX "64b DMA mask configuration failed\n");
485 goto bail2;
486 }
487 ret = pci_set_consistent_dma_mask(pcidev, DMA_64BIT_MASK);
488 if (ret) {
489 printk(KERN_ERR PFX "64b DMA consistent mask configuration failed\n");
490 goto bail2;
491 }
492 } else {
493 ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK);
494 if (ret < 0) {
495 printk(KERN_ERR PFX "32b DMA mask configuration failed\n");
496 goto bail2;
497 }
498 ret = pci_set_consistent_dma_mask(pcidev, DMA_32BIT_MASK);
499 if (ret) {
500 printk(KERN_ERR PFX "32b DMA consistent mask configuration failed\n");
501 goto bail2;
502 }
503 }
504
505 pci_set_master(pcidev);
506
507 /* Allocate hardware structure */
508 nesdev = kzalloc(sizeof(struct nes_device), GFP_KERNEL);
509 if (!nesdev) {
510 printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", pci_name(pcidev));
511 ret = -ENOMEM;
512 goto bail2;
513 }
514
515 nes_debug(NES_DBG_INIT, "Allocated nes device at %p\n", nesdev);
516 nesdev->pcidev = pcidev;
517 pci_set_drvdata(pcidev, nesdev);
518
519 pci_read_config_byte(pcidev, 0x0008, &hw_rev);
520 nes_debug(NES_DBG_INIT, "hw_rev=%u\n", hw_rev);
521
522 spin_lock_init(&nesdev->indexed_regs_lock);
523
524 /* Remap the PCI registers in adapter BAR0 to kernel VA space */
525 mmio_regs = ioremap_nocache(pci_resource_start(pcidev, BAR_0), sizeof(mmio_regs));
526 if (mmio_regs == NULL) {
527 printk(KERN_ERR PFX "Unable to remap BAR0\n");
528 ret = -EIO;
529 goto bail3;
530 }
531 nesdev->regs = mmio_regs;
532 nesdev->index_reg = 0x50 + (PCI_FUNC(pcidev->devfn)*8) + mmio_regs;
533
534 /* Ensure interrupts are disabled */
535 nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
536
537 if (nes_drv_opt & NES_DRV_OPT_ENABLE_MSI) {
538 if (!pci_enable_msi(nesdev->pcidev)) {
539 nesdev->msi_enabled = 1;
540 nes_debug(NES_DBG_INIT, "MSI is enabled for device %s\n",
541 pci_name(pcidev));
542 } else {
543 nes_debug(NES_DBG_INIT, "MSI is disabled by linux for device %s\n",
544 pci_name(pcidev));
545 }
546 } else {
547 nes_debug(NES_DBG_INIT, "MSI not requested due to driver options for device %s\n",
548 pci_name(pcidev));
549 }
550
551 nesdev->csr_start = pci_resource_start(nesdev->pcidev, BAR_0);
552 nesdev->doorbell_region = pci_resource_start(nesdev->pcidev, BAR_1);
553
554 /* Init the adapter */
555 nesdev->nesadapter = nes_init_adapter(nesdev, hw_rev);
3c2d774c
GS		 556 if (!nesdev->nesadapter) {
557 printk(KERN_ERR PFX "Unable to initialize adapter.\n");
558 ret = -ENOMEM;
559 goto bail5;
560 }
a4435feb 561 nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
3c2d774c
GS		 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 nesdev->mac_index = PCI_FUNC(nesdev->pcidev->devfn) % nesdev->nesadapter->port_count;
568
569 tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
570
571 /* bring up the Control QP */
572 if (nes_init_cqp(nesdev)) {
573 ret = -ENODEV;
574 goto bail6;
575 }
576
577 /* Arm the CCQ */
578 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
579 PCI_FUNC(nesdev->pcidev->devfn));
580 nes_read32(nesdev->regs+NES_CQE_ALLOC);
581
582 /* Enable the interrupts */
583 nesdev->int_req = (0x101 << PCI_FUNC(nesdev->pcidev->devfn)) |
584 (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
585 if (PCI_FUNC(nesdev->pcidev->devfn) < 4) {
586 nesdev->int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+24));
587 }
588
589 /* TODO: This really should be the first driver to load, not function 0 */
590 if (PCI_FUNC(nesdev->pcidev->devfn) == 0) {
591 /* pick up PCI and critical errors if the first driver to load */
592 nesdev->intf_int_req = NES_INTF_INT_PCIERR | NES_INTF_INT_CRITERR;
593 nesdev->int_req |= NES_INT_INTF;
594 } else {
595 nesdev->intf_int_req = 0;
596 }
597 nesdev->intf_int_req |= (1 << (PCI_FUNC(nesdev->pcidev->devfn)+16));
598 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0, 0);
599 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 0);
600 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS2, 0x00001265);
601 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS4, 0x18021804);
602
603 nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS3, 0x17801790);
604
605 /* deal with both periodic and one_shot */
606 nesdev->timer_int_req = 0x101 << PCI_FUNC(nesdev->pcidev->devfn);
607 nesdev->nesadapter->timer_int_req |= nesdev->timer_int_req;
608 nes_debug(NES_DBG_INIT, "setting int_req for function %u, nesdev = 0x%04X, adapter = 0x%04X\n",
609 PCI_FUNC(nesdev->pcidev->devfn),
610 nesdev->timer_int_req, nesdev->nesadapter->timer_int_req);
611
612 nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
613
614 list_add_tail(&nesdev->list, &nes_dev_list);
615
616 /* Request an interrupt line for the driver */
617 ret = request_irq(pcidev->irq, nes_interrupt, IRQF_SHARED, DRV_NAME, nesdev);
618 if (ret) {
619 printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n",
620 pci_name(pcidev), pcidev->irq);
621 goto bail65;
622 }
623
624 nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
625
626 if (nes_notifiers_registered == 0) {
627 register_inetaddr_notifier(&nes_inetaddr_notifier);
628 register_netevent_notifier(&nes_net_notifier);
629 }
630 nes_notifiers_registered++;
631
632 /* Initialize network devices */
633 if ((netdev = nes_netdev_init(nesdev, mmio_regs)) == NULL) {
634 goto bail7;
635 }
636
637 /* Register network device */
638 ret = register_netdev(netdev);
639 if (ret) {
640 printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", ret);
641 nes_netdev_destroy(netdev);
642 goto bail7;
643 }
644
645 nes_print_macaddr(netdev);
646 /* create a CM core for this netdev */
647 nesvnic = netdev_priv(netdev);
648
649 nesdev->netdev_count++;
650 nesdev->nesadapter->netdev_count++;
651
652
653 printk(KERN_ERR PFX "%s: NetEffect RNIC driver successfully loaded.\n",
654 pci_name(pcidev));
655 return 0;
656
657 bail7:
658 printk(KERN_ERR PFX "bail7\n");
659 while (nesdev->netdev_count > 0) {
660 nesdev->netdev_count--;
661 nesdev->nesadapter->netdev_count--;
662
663 unregister_netdev(nesdev->netdev[nesdev->netdev_count]);
664 nes_netdev_destroy(nesdev->netdev[nesdev->netdev_count]);
665 }
666
667 nes_debug(NES_DBG_INIT, "netdev_count=%d, nesadapter->netdev_count=%d\n",
668 nesdev->netdev_count, nesdev->nesadapter->netdev_count);
669
670 nes_notifiers_registered--;
671 if (nes_notifiers_registered == 0) {
672 unregister_netevent_notifier(&nes_net_notifier);
673 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
674 }
675
676 list_del(&nesdev->list);
677 nes_destroy_cqp(nesdev);
678
679 bail65:
680 printk(KERN_ERR PFX "bail65\n");
681 free_irq(pcidev->irq, nesdev);
682 if (nesdev->msi_enabled) {
683 pci_disable_msi(pcidev);
684 }
685 bail6:
686 printk(KERN_ERR PFX "bail6\n");
687 tasklet_kill(&nesdev->dpc_tasklet);
688 /* Deallocate the Adapter Structure */
689 nes_destroy_adapter(nesdev->nesadapter);
690
691 bail5:
692 printk(KERN_ERR PFX "bail5\n");
693 iounmap(nesdev->regs);
694
695 bail3:
696 printk(KERN_ERR PFX "bail3\n");
697 kfree(nesdev);
698
699 bail2:
700 pci_release_regions(pcidev);
701
702 bail1:
703 pci_disable_device(pcidev);
704
705 bail0:
706 return ret;
707}
708
709
710/**
711 * nes_remove - unload from kernel
712 */
713static void __devexit nes_remove(struct pci_dev *pcidev)
714{
715 struct nes_device *nesdev = pci_get_drvdata(pcidev);
716 struct net_device *netdev;
717 int netdev_index = 0;
718
719 if (nesdev->netdev_count) {
720 netdev = nesdev->netdev[netdev_index];
721 if (netdev) {
722 netif_stop_queue(netdev);
723 unregister_netdev(netdev);
724 nes_netdev_destroy(netdev);
725
726 nesdev->netdev[netdev_index] = NULL;
727 nesdev->netdev_count--;
728 nesdev->nesadapter->netdev_count--;
729 }
730 }
731
732 nes_notifiers_registered--;
733 if (nes_notifiers_registered == 0) {
734 unregister_netevent_notifier(&nes_net_notifier);
735 unregister_inetaddr_notifier(&nes_inetaddr_notifier);
736 }
737
738 list_del(&nesdev->list);
739 nes_destroy_cqp(nesdev);
4cd1e5eb
RD		 740
741 free_irq(pcidev->irq, nesdev);
3c2d774c
GS		 742 tasklet_kill(&nesdev->dpc_tasklet);
743
744 /* Deallocate the Adapter Structure */
745 nes_destroy_adapter(nesdev->nesadapter);
746
3c2d774c
GS		 747 if (nesdev->msi_enabled) {
748 pci_disable_msi(pcidev);
749 }
750
751 iounmap(nesdev->regs);
752 kfree(nesdev);
753
754 /* nes_debug(NES_DBG_SHUTDOWN, "calling pci_release_regions.\n"); */
755 pci_release_regions(pcidev);
756 pci_disable_device(pcidev);
757 pci_set_drvdata(pcidev, NULL);
758}
759
760
761static struct pci_driver nes_pci_driver = {
762 .name = DRV_NAME,
763 .id_table = nes_pci_table,
764 .probe = nes_probe,
765 .remove = __devexit_p(nes_remove),
766};
767
768static ssize_t nes_show_adapter(struct device_driver *ddp, char *buf)
769{
770 unsigned int devfn = 0xffffffff;
771 unsigned char bus_number = 0xff;
772 unsigned int i = 0;
773 struct nes_device *nesdev;
774
775 list_for_each_entry(nesdev, &nes_dev_list, list) {
776 if (i == ee_flsh_adapter) {
777 devfn = nesdev->nesadapter->devfn;
778 bus_number = nesdev->nesadapter->bus_number;
779 break;
780 }
781 i++;
782 }
783
784 return snprintf(buf, PAGE_SIZE, "%x:%x", bus_number, devfn);
785}
786
787static ssize_t nes_store_adapter(struct device_driver *ddp,
788 const char *buf, size_t count)
789{
790 char *p = (char *)buf;
791
792 ee_flsh_adapter = simple_strtoul(p, &p, 10);
793 return strnlen(buf, count);
794}
795
796static ssize_t nes_show_ee_cmd(struct device_driver *ddp, char *buf)
797{
798 u32 eeprom_cmd = 0xdead;
799 u32 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 eeprom_cmd = nes_read32(nesdev->regs + NES_EEPROM_COMMAND);
805 break;
806 }
807 i++;
808 }
809 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_cmd);
810}
811
812static ssize_t nes_store_ee_cmd(struct device_driver *ddp,
813 const char *buf, size_t count)
814{
815 char *p = (char *)buf;
816 u32 val;
817 u32 i = 0;
818 struct nes_device *nesdev;
819
820 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
821 val = simple_strtoul(p, &p, 16);
822 list_for_each_entry(nesdev, &nes_dev_list, list) {
823 if (i == ee_flsh_adapter) {
824 nes_write32(nesdev->regs + NES_EEPROM_COMMAND, val);
825 break;
826 }
827 i++;
828 }
829 }
830 return strnlen(buf, count);
831}
832
833static ssize_t nes_show_ee_data(struct device_driver *ddp, char *buf)
834{
835 u32 eeprom_data = 0xdead;
836 u32 i = 0;
837 struct nes_device *nesdev;
838
839 list_for_each_entry(nesdev, &nes_dev_list, list) {
840 if (i == ee_flsh_adapter) {
841 eeprom_data = nes_read32(nesdev->regs + NES_EEPROM_DATA);
842 break;
843 }
844 i++;
845 }
846
847 return snprintf(buf, PAGE_SIZE, "0x%x\n", eeprom_data);
848}
849
850static ssize_t nes_store_ee_data(struct device_driver *ddp,
851 const char *buf, size_t count)
852{
853 char *p = (char *)buf;
854 u32 val;
855 u32 i = 0;
856 struct nes_device *nesdev;
857
858 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
859 val = simple_strtoul(p, &p, 16);
860 list_for_each_entry(nesdev, &nes_dev_list, list) {
861 if (i == ee_flsh_adapter) {
862 nes_write32(nesdev->regs + NES_EEPROM_DATA, val);
863 break;
864 }
865 i++;
866 }
867 }
868 return strnlen(buf, count);
869}
870
871static ssize_t nes_show_flash_cmd(struct device_driver *ddp, char *buf)
872{
873 u32 flash_cmd = 0xdead;
874 u32 i = 0;
875 struct nes_device *nesdev;
876
877 list_for_each_entry(nesdev, &nes_dev_list, list) {
878 if (i == ee_flsh_adapter) {
879 flash_cmd = nes_read32(nesdev->regs + NES_FLASH_COMMAND);
880 break;
881 }
882 i++;
883 }
884
885 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_cmd);
886}
887
888static ssize_t nes_store_flash_cmd(struct device_driver *ddp,
889 const char *buf, size_t count)
890{
891 char *p = (char *)buf;
892 u32 val;
893 u32 i = 0;
894 struct nes_device *nesdev;
895
896 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
897 val = simple_strtoul(p, &p, 16);
898 list_for_each_entry(nesdev, &nes_dev_list, list) {
899 if (i == ee_flsh_adapter) {
900 nes_write32(nesdev->regs + NES_FLASH_COMMAND, val);
901 break;
902 }
903 i++;
904 }
905 }
906 return strnlen(buf, count);
907}
908
909static ssize_t nes_show_flash_data(struct device_driver *ddp, char *buf)
910{
911 u32 flash_data = 0xdead;
912 u32 i = 0;
913 struct nes_device *nesdev;
914
915 list_for_each_entry(nesdev, &nes_dev_list, list) {
916 if (i == ee_flsh_adapter) {
917 flash_data = nes_read32(nesdev->regs + NES_FLASH_DATA);
918 break;
919 }
920 i++;
921 }
922
923 return snprintf(buf, PAGE_SIZE, "0x%x\n", flash_data);
924}
925
926static ssize_t nes_store_flash_data(struct device_driver *ddp,
927 const char *buf, size_t count)
928{
929 char *p = (char *)buf;
930 u32 val;
931 u32 i = 0;
932 struct nes_device *nesdev;
933
934 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
935 val = simple_strtoul(p, &p, 16);
936 list_for_each_entry(nesdev, &nes_dev_list, list) {
937 if (i == ee_flsh_adapter) {
938 nes_write32(nesdev->regs + NES_FLASH_DATA, val);
939 break;
940 }
941 i++;
942 }
943 }
944 return strnlen(buf, count);
945}
946
947static ssize_t nes_show_nonidx_addr(struct device_driver *ddp, char *buf)
948{
949 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_nonidx_addr);
950}
951
952static ssize_t nes_store_nonidx_addr(struct device_driver *ddp,
953 const char *buf, size_t count)
954{
955 char *p = (char *)buf;
956
957 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
958 sysfs_nonidx_addr = simple_strtoul(p, &p, 16);
959
960 return strnlen(buf, count);
961}
962
963static ssize_t nes_show_nonidx_data(struct device_driver *ddp, char *buf)
964{
965 u32 nonidx_data = 0xdead;
966 u32 i = 0;
967 struct nes_device *nesdev;
968
969 list_for_each_entry(nesdev, &nes_dev_list, list) {
970 if (i == ee_flsh_adapter) {
971 nonidx_data = nes_read32(nesdev->regs + sysfs_nonidx_addr);
972 break;
973 }
974 i++;
975 }
976
977 return snprintf(buf, PAGE_SIZE, "0x%x\n", nonidx_data);
978}
979
980static ssize_t nes_store_nonidx_data(struct device_driver *ddp,
981 const char *buf, size_t count)
982{
983 char *p = (char *)buf;
984 u32 val;
985 u32 i = 0;
986 struct nes_device *nesdev;
987
988 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
989 val = simple_strtoul(p, &p, 16);
990 list_for_each_entry(nesdev, &nes_dev_list, list) {
991 if (i == ee_flsh_adapter) {
992 nes_write32(nesdev->regs + sysfs_nonidx_addr, val);
993 break;
994 }
995 i++;
996 }
997 }
998 return strnlen(buf, count);
999}
1000
1001static ssize_t nes_show_idx_addr(struct device_driver *ddp, char *buf)
1002{
1003 return snprintf(buf, PAGE_SIZE, "0x%x\n", sysfs_idx_addr);
1004}
1005
1006static ssize_t nes_store_idx_addr(struct device_driver *ddp,
1007 const char *buf, size_t count)
1008{
1009 char *p = (char *)buf;
1010
1011 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X')
1012 sysfs_idx_addr = simple_strtoul(p, &p, 16);
1013
1014 return strnlen(buf, count);
1015}
1016
1017static ssize_t nes_show_idx_data(struct device_driver *ddp, char *buf)
1018{
1019 u32 idx_data = 0xdead;
1020 u32 i = 0;
1021 struct nes_device *nesdev;
1022
1023 list_for_each_entry(nesdev, &nes_dev_list, list) {
1024 if (i == ee_flsh_adapter) {
1025 idx_data = nes_read_indexed(nesdev, sysfs_idx_addr);
1026 break;
1027 }
1028 i++;
1029 }
1030
1031 return snprintf(buf, PAGE_SIZE, "0x%x\n", idx_data);
1032}
1033
1034static ssize_t nes_store_idx_data(struct device_driver *ddp,
1035 const char *buf, size_t count)
1036{
1037 char *p = (char *)buf;
1038 u32 val;
1039 u32 i = 0;
1040 struct nes_device *nesdev;
1041
1042 if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
1043 val = simple_strtoul(p, &p, 16);
1044 list_for_each_entry(nesdev, &nes_dev_list, list) {
1045 if (i == ee_flsh_adapter) {
1046 nes_write_indexed(nesdev, sysfs_idx_addr, val);
1047 break;
1048 }
1049 i++;
1050 }
1051 }
1052 return strnlen(buf, count);
1053}
1054
1055static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
1056 nes_show_adapter, nes_store_adapter);
1057static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
1058 nes_show_ee_cmd, nes_store_ee_cmd);
1059static DRIVER_ATTR(eeprom_data, S_IRUSR | S_IWUSR,
1060 nes_show_ee_data, nes_store_ee_data);
1061static DRIVER_ATTR(flash_cmd, S_IRUSR | S_IWUSR,
1062 nes_show_flash_cmd, nes_store_flash_cmd);
1063static DRIVER_ATTR(flash_data, S_IRUSR | S_IWUSR,
1064 nes_show_flash_data, nes_store_flash_data);
1065static DRIVER_ATTR(nonidx_addr, S_IRUSR | S_IWUSR,
1066 nes_show_nonidx_addr, nes_store_nonidx_addr);
1067static DRIVER_ATTR(nonidx_data, S_IRUSR | S_IWUSR,
1068 nes_show_nonidx_data, nes_store_nonidx_data);
1069static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
1070 nes_show_idx_addr, nes_store_idx_addr);
1071static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
1072 nes_show_idx_data, nes_store_idx_data);
1073
1074static int nes_create_driver_sysfs(struct pci_driver *drv)
1075{
1076 int error;
1077 error = driver_create_file(&drv->driver, &driver_attr_adapter);
1078 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_cmd);
1079 error |= driver_create_file(&drv->driver, &driver_attr_eeprom_data);
1080 error |= driver_create_file(&drv->driver, &driver_attr_flash_cmd);
1081 error |= driver_create_file(&drv->driver, &driver_attr_flash_data);
1082 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_addr);
1083 error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
1084 error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
1085 error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
1086 return error;
1087}
1088
1089static void nes_remove_driver_sysfs(struct pci_driver *drv)
1090{
1091 driver_remove_file(&drv->driver, &driver_attr_adapter);
1092 driver_remove_file(&drv->driver, &driver_attr_eeprom_cmd);
1093 driver_remove_file(&drv->driver, &driver_attr_eeprom_data);
1094 driver_remove_file(&drv->driver, &driver_attr_flash_cmd);
1095 driver_remove_file(&drv->driver, &driver_attr_flash_data);
1096 driver_remove_file(&drv->driver, &driver_attr_nonidx_addr);
1097 driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
1098 driver_remove_file(&drv->driver, &driver_attr_idx_addr);
1099 driver_remove_file(&drv->driver, &driver_attr_idx_data);
1100}
1101
1102/**
1103 * nes_init_module - module initialization entry point
1104 */
1105static int __init nes_init_module(void)
1106{
1107 int retval;
1108 int retval1;
1109
1110 retval = nes_cm_start();
1111 if (retval) {
1112 printk(KERN_ERR PFX "Unable to start NetEffect iWARP CM.\n");
1113 return retval;
1114 }
1115 retval = pci_register_driver(&nes_pci_driver);
1116 if (retval >= 0) {
1117 retval1 = nes_create_driver_sysfs(&nes_pci_driver);
1118 if (retval1 < 0)
1119 printk(KERN_ERR PFX "Unable to create NetEffect sys files.\n");
1120 }
1121 return retval;
1122}
1123
1124
1125/**
1126 * nes_exit_module - module unload entry point
1127 */
1128static void __exit nes_exit_module(void)
1129{
1130 nes_cm_stop();
1131 nes_remove_driver_sysfs(&nes_pci_driver);
1132
1133 pci_unregister_driver(&nes_pci_driver);
1134}
1135
1136
1137module_init(nes_init_module);
1138module_exit(nes_exit_module);
Linux 6.x block layer and io_uring tree(s)