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IB: Set class_dev->dev in core for nice device symlink
[linux-2.6/verdex.git] / drivers / infiniband / hw / amso1100 / c2_provider.c
blob607c09bf764c5d514d87f8e265ea0717314ba24f
1 /*
2 * Copyright (c) 2005 Ammasso, 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
35 #include <linux/module.h>
36 #include <linux/moduleparam.h>
37 #include <linux/pci.h>
38 #include <linux/netdevice.h>
39 #include <linux/etherdevice.h>
40 #include <linux/inetdevice.h>
41 #include <linux/delay.h>
42 #include <linux/ethtool.h>
43 #include <linux/mii.h>
44 #include <linux/if_vlan.h>
45 #include <linux/crc32.h>
46 #include <linux/in.h>
47 #include <linux/ip.h>
48 #include <linux/tcp.h>
49 #include <linux/init.h>
50 #include <linux/dma-mapping.h>
51 #include <linux/if_arp.h>
52 #include <linux/vmalloc.h>
53
54 #include <asm/io.h>
55 #include <asm/irq.h>
56 #include <asm/byteorder.h>
57
58 #include <rdma/ib_smi.h>
59 #include <rdma/ib_user_verbs.h>
60 #include "c2.h"
61 #include "c2_provider.h"
62 #include "c2_user.h"
63
64 static int c2_query_device(struct ib_device *ibdev,
65 struct ib_device_attr *props)
66 {
67 struct c2_dev *c2dev = to_c2dev(ibdev);
68
69 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
70
71 *props = c2dev->props;
72 return 0;
73 }
74
75 static int c2_query_port(struct ib_device *ibdev,
76 u8 port, struct ib_port_attr *props)
77 {
78 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
79
80 props->max_mtu = IB_MTU_4096;
81 props->lid = 0;
82 props->lmc = 0;
83 props->sm_lid = 0;
84 props->sm_sl = 0;
85 props->state = IB_PORT_ACTIVE;
86 props->phys_state = 0;
87 props->port_cap_flags =
88 IB_PORT_CM_SUP |
89 IB_PORT_REINIT_SUP |
90 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
91 props->gid_tbl_len = 1;
92 props->pkey_tbl_len = 1;
93 props->qkey_viol_cntr = 0;
94 props->active_width = 1;
95 props->active_speed = 1;
96
97 return 0;
98 }
99
100 static int c2_modify_port(struct ib_device *ibdev,
101 u8 port, int port_modify_mask,
102 struct ib_port_modify *props)
103 {
104 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
105 return 0;
106 }
107
108 static int c2_query_pkey(struct ib_device *ibdev,
109 u8 port, u16 index, u16 * pkey)
110 {
111 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
112 *pkey = 0;
113 return 0;
114 }
115
116 static int c2_query_gid(struct ib_device *ibdev, u8 port,
117 int index, union ib_gid *gid)
118 {
119 struct c2_dev *c2dev = to_c2dev(ibdev);
120
121 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
122 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
123 memcpy(&(gid->raw[0]), c2dev->pseudo_netdev->dev_addr, 6);
124
125 return 0;
126 }
127
128 /* Allocate the user context data structure. This keeps track
129 * of all objects associated with a particular user-mode client.
130 */
131 static struct ib_ucontext *c2_alloc_ucontext(struct ib_device *ibdev,
132 struct ib_udata *udata)
133 {
134 struct c2_ucontext *context;
135
136 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
137 context = kmalloc(sizeof(*context), GFP_KERNEL);
138 if (!context)
139 return ERR_PTR(-ENOMEM);
140
141 return &context->ibucontext;
142 }
143
144 static int c2_dealloc_ucontext(struct ib_ucontext *context)
145 {
146 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
147 kfree(context);
148 return 0;
149 }
150
151 static int c2_mmap_uar(struct ib_ucontext *context, struct vm_area_struct *vma)
152 {
153 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
154 return -ENOSYS;
155 }
156
157 static struct ib_pd *c2_alloc_pd(struct ib_device *ibdev,
158 struct ib_ucontext *context,
159 struct ib_udata *udata)
160 {
161 struct c2_pd *pd;
162 int err;
163
164 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
165
166 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
167 if (!pd)
168 return ERR_PTR(-ENOMEM);
169
170 err = c2_pd_alloc(to_c2dev(ibdev), !context, pd);
171 if (err) {
172 kfree(pd);
173 return ERR_PTR(err);
174 }
175
176 if (context) {
177 if (ib_copy_to_udata(udata, &pd->pd_id, sizeof(__u32))) {
178 c2_pd_free(to_c2dev(ibdev), pd);
179 kfree(pd);
180 return ERR_PTR(-EFAULT);
181 }
182 }
183
184 return &pd->ibpd;
185 }
186
187 static int c2_dealloc_pd(struct ib_pd *pd)
188 {
189 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
190 c2_pd_free(to_c2dev(pd->device), to_c2pd(pd));
191 kfree(pd);
192
193 return 0;
194 }
195
196 static struct ib_ah *c2_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
197 {
198 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
199 return ERR_PTR(-ENOSYS);
200 }
201
202 static int c2_ah_destroy(struct ib_ah *ah)
203 {
204 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
205 return -ENOSYS;
206 }
207
208 static void c2_add_ref(struct ib_qp *ibqp)
209 {
210 struct c2_qp *qp;
211 BUG_ON(!ibqp);
212 qp = to_c2qp(ibqp);
213 atomic_inc(&qp->refcount);
214 }
215
216 static void c2_rem_ref(struct ib_qp *ibqp)
217 {
218 struct c2_qp *qp;
219 BUG_ON(!ibqp);
220 qp = to_c2qp(ibqp);
221 if (atomic_dec_and_test(&qp->refcount))
222 wake_up(&qp->wait);
223 }
224
225 struct ib_qp *c2_get_qp(struct ib_device *device, int qpn)
226 {
227 struct c2_dev* c2dev = to_c2dev(device);
228 struct c2_qp *qp;
229
230 qp = c2_find_qpn(c2dev, qpn);
231 pr_debug("%s Returning QP=%p for QPN=%d, device=%p, refcount=%d\n",
232 __FUNCTION__, qp, qpn, device,
233 (qp?atomic_read(&qp->refcount):0));
234
235 return (qp?&qp->ibqp:NULL);
236 }
237
238 static struct ib_qp *c2_create_qp(struct ib_pd *pd,
239 struct ib_qp_init_attr *init_attr,
240 struct ib_udata *udata)
241 {
242 struct c2_qp *qp;
243 int err;
244
245 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
246
247 switch (init_attr->qp_type) {
248 case IB_QPT_RC:
249 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
250 if (!qp) {
251 pr_debug("%s: Unable to allocate QP\n", __FUNCTION__);
252 return ERR_PTR(-ENOMEM);
253 }
254 spin_lock_init(&qp->lock);
255 if (pd->uobject) {
256 /* userspace specific */
257 }
258
259 err = c2_alloc_qp(to_c2dev(pd->device),
260 to_c2pd(pd), init_attr, qp);
261
262 if (err && pd->uobject) {
263 /* userspace specific */
264 }
265
266 break;
267 default:
268 pr_debug("%s: Invalid QP type: %d\n", __FUNCTION__,
269 init_attr->qp_type);
270 return ERR_PTR(-EINVAL);
271 break;
272 }
273
274 if (err) {
275 kfree(qp);
276 return ERR_PTR(err);
277 }
278
279 return &qp->ibqp;
280 }
281
282 static int c2_destroy_qp(struct ib_qp *ib_qp)
283 {
284 struct c2_qp *qp = to_c2qp(ib_qp);
285
286 pr_debug("%s:%u qp=%p,qp->state=%d\n",
287 __FUNCTION__, __LINE__,ib_qp,qp->state);
288 c2_free_qp(to_c2dev(ib_qp->device), qp);
289 kfree(qp);
290 return 0;
291 }
292
293 static struct ib_cq *c2_create_cq(struct ib_device *ibdev, int entries,
294 struct ib_ucontext *context,
295 struct ib_udata *udata)
296 {
297 struct c2_cq *cq;
298 int err;
299
300 cq = kmalloc(sizeof(*cq), GFP_KERNEL);
301 if (!cq) {
302 pr_debug("%s: Unable to allocate CQ\n", __FUNCTION__);
303 return ERR_PTR(-ENOMEM);
304 }
305
306 err = c2_init_cq(to_c2dev(ibdev), entries, NULL, cq);
307 if (err) {
308 pr_debug("%s: error initializing CQ\n", __FUNCTION__);
309 kfree(cq);
310 return ERR_PTR(err);
311 }
312
313 return &cq->ibcq;
314 }
315
316 static int c2_destroy_cq(struct ib_cq *ib_cq)
317 {
318 struct c2_cq *cq = to_c2cq(ib_cq);
319
320 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
321
322 c2_free_cq(to_c2dev(ib_cq->device), cq);
323 kfree(cq);
324
325 return 0;
326 }
327
328 static inline u32 c2_convert_access(int acc)
329 {
330 return (acc & IB_ACCESS_REMOTE_WRITE ? C2_ACF_REMOTE_WRITE : 0) |
331 (acc & IB_ACCESS_REMOTE_READ ? C2_ACF_REMOTE_READ : 0) |
332 (acc & IB_ACCESS_LOCAL_WRITE ? C2_ACF_LOCAL_WRITE : 0) |
333 C2_ACF_LOCAL_READ | C2_ACF_WINDOW_BIND;
334 }
335
336 static struct ib_mr *c2_reg_phys_mr(struct ib_pd *ib_pd,
337 struct ib_phys_buf *buffer_list,
338 int num_phys_buf, int acc, u64 * iova_start)
339 {
340 struct c2_mr *mr;
341 u64 *page_list;
342 u32 total_len;
343 int err, i, j, k, page_shift, pbl_depth;
344
345 pbl_depth = 0;
346 total_len = 0;
347
348 page_shift = PAGE_SHIFT;
349 /*
350 * If there is only 1 buffer we assume this could
351 * be a map of all phy mem...use a 32k page_shift.
352 */
353 if (num_phys_buf == 1)
354 page_shift += 3;
355
356 for (i = 0; i < num_phys_buf; i++) {
357
358 if (buffer_list[i].addr & ~PAGE_MASK) {
359 pr_debug("Unaligned Memory Buffer: 0x%x\n",
360 (unsigned int) buffer_list[i].addr);
361 return ERR_PTR(-EINVAL);
362 }
363
364 if (!buffer_list[i].size) {
365 pr_debug("Invalid Buffer Size\n");
366 return ERR_PTR(-EINVAL);
367 }
368
369 total_len += buffer_list[i].size;
370 pbl_depth += ALIGN(buffer_list[i].size,
371 (1 << page_shift)) >> page_shift;
372 }
373
374 page_list = vmalloc(sizeof(u64) * pbl_depth);
375 if (!page_list) {
376 pr_debug("couldn't vmalloc page_list of size %zd\n",
377 (sizeof(u64) * pbl_depth));
378 return ERR_PTR(-ENOMEM);
379 }
380
381 for (i = 0, j = 0; i < num_phys_buf; i++) {
382
383 int naddrs;
384
385 naddrs = ALIGN(buffer_list[i].size,
386 (1 << page_shift)) >> page_shift;
387 for (k = 0; k < naddrs; k++)
388 page_list[j++] = (buffer_list[i].addr +
389 (k << page_shift));
390 }
391
392 mr = kmalloc(sizeof(*mr), GFP_KERNEL);
393 if (!mr) {
394 vfree(page_list);
395 return ERR_PTR(-ENOMEM);
396 }
397
398 mr->pd = to_c2pd(ib_pd);
399 pr_debug("%s - page shift %d, pbl_depth %d, total_len %u, "
400 "*iova_start %llx, first pa %llx, last pa %llx\n",
401 __FUNCTION__, page_shift, pbl_depth, total_len,
402 (unsigned long long) *iova_start,
403 (unsigned long long) page_list[0],
404 (unsigned long long) page_list[pbl_depth-1]);
405 err = c2_nsmr_register_phys_kern(to_c2dev(ib_pd->device), page_list,
406 (1 << page_shift), pbl_depth,
407 total_len, 0, iova_start,
408 c2_convert_access(acc), mr);
409 vfree(page_list);
410 if (err) {
411 kfree(mr);
412 return ERR_PTR(err);
413 }
414
415 return &mr->ibmr;
416 }
417
418 static struct ib_mr *c2_get_dma_mr(struct ib_pd *pd, int acc)
419 {
420 struct ib_phys_buf bl;
421 u64 kva = 0;
422
423 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
424
425 /* AMSO1100 limit */
426 bl.size = 0xffffffff;
427 bl.addr = 0;
428 return c2_reg_phys_mr(pd, &bl, 1, acc, &kva);
429 }
430
431 static struct ib_mr *c2_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
432 int acc, struct ib_udata *udata)
433 {
434 u64 *pages;
435 u64 kva = 0;
436 int shift, n, len;
437 int i, j, k;
438 int err = 0;
439 struct ib_umem_chunk *chunk;
440 struct c2_pd *c2pd = to_c2pd(pd);
441 struct c2_mr *c2mr;
442
443 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
444 shift = ffs(region->page_size) - 1;
445
446 c2mr = kmalloc(sizeof(*c2mr), GFP_KERNEL);
447 if (!c2mr)
448 return ERR_PTR(-ENOMEM);
449 c2mr->pd = c2pd;
450
451 n = 0;
452 list_for_each_entry(chunk, &region->chunk_list, list)
453 n += chunk->nents;
454
455 pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
456 if (!pages) {
457 err = -ENOMEM;
458 goto err;
459 }
460
461 i = 0;
462 list_for_each_entry(chunk, &region->chunk_list, list) {
463 for (j = 0; j < chunk->nmap; ++j) {
464 len = sg_dma_len(&chunk->page_list[j]) >> shift;
465 for (k = 0; k < len; ++k) {
466 pages[i++] =
467 sg_dma_address(&chunk->page_list[j]) +
468 (region->page_size * k);
469 }
470 }
471 }
472
473 kva = (u64)region->virt_base;
474 err = c2_nsmr_register_phys_kern(to_c2dev(pd->device),
475 pages,
476 region->page_size,
477 i,
478 region->length,
479 region->offset,
480 &kva,
481 c2_convert_access(acc),
482 c2mr);
483 kfree(pages);
484 if (err) {
485 kfree(c2mr);
486 return ERR_PTR(err);
487 }
488 return &c2mr->ibmr;
489
490 err:
491 kfree(c2mr);
492 return ERR_PTR(err);
493 }
494
495 static int c2_dereg_mr(struct ib_mr *ib_mr)
496 {
497 struct c2_mr *mr = to_c2mr(ib_mr);
498 int err;
499
500 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
501
502 err = c2_stag_dealloc(to_c2dev(ib_mr->device), ib_mr->lkey);
503 if (err)
504 pr_debug("c2_stag_dealloc failed: %d\n", err);
505 else
506 kfree(mr);
507
508 return err;
509 }
510
511 static ssize_t show_rev(struct class_device *cdev, char *buf)
512 {
513 struct c2_dev *dev = container_of(cdev, struct c2_dev, ibdev.class_dev);
514 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
515 return sprintf(buf, "%x\n", dev->props.hw_ver);
516 }
517
518 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
519 {
520 struct c2_dev *dev = container_of(cdev, struct c2_dev, ibdev.class_dev);
521 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
522 return sprintf(buf, "%x.%x.%x\n",
523 (int) (dev->props.fw_ver >> 32),
524 (int) (dev->props.fw_ver >> 16) & 0xffff,
525 (int) (dev->props.fw_ver & 0xffff));
526 }
527
528 static ssize_t show_hca(struct class_device *cdev, char *buf)
529 {
530 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
531 return sprintf(buf, "AMSO1100\n");
532 }
533
534 static ssize_t show_board(struct class_device *cdev, char *buf)
535 {
536 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
537 return sprintf(buf, "%.*s\n", 32, "AMSO1100 Board ID");
538 }
539
540 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
541 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
542 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
543 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
544
545 static struct class_device_attribute *c2_class_attributes[] = {
546 &class_device_attr_hw_rev,
547 &class_device_attr_fw_ver,
548 &class_device_attr_hca_type,
549 &class_device_attr_board_id
550 };
551
552 static int c2_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
553 int attr_mask, struct ib_udata *udata)
554 {
555 int err;
556
557 err =
558 c2_qp_modify(to_c2dev(ibqp->device), to_c2qp(ibqp), attr,
559 attr_mask);
560
561 return err;
562 }
563
564 static int c2_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
565 {
566 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
567 return -ENOSYS;
568 }
569
570 static int c2_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
571 {
572 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
573 return -ENOSYS;
574 }
575
576 static int c2_process_mad(struct ib_device *ibdev,
577 int mad_flags,
578 u8 port_num,
579 struct ib_wc *in_wc,
580 struct ib_grh *in_grh,
581 struct ib_mad *in_mad, struct ib_mad *out_mad)
582 {
583 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
584 return -ENOSYS;
585 }
586
587 static int c2_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
588 {
589 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
590
591 /* Request a connection */
592 return c2_llp_connect(cm_id, iw_param);
593 }
594
595 static int c2_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
596 {
597 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
598
599 /* Accept the new connection */
600 return c2_llp_accept(cm_id, iw_param);
601 }
602
603 static int c2_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
604 {
605 int err;
606
607 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
608
609 err = c2_llp_reject(cm_id, pdata, pdata_len);
610 return err;
611 }
612
613 static int c2_service_create(struct iw_cm_id *cm_id, int backlog)
614 {
615 int err;
616
617 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
618 err = c2_llp_service_create(cm_id, backlog);
619 pr_debug("%s:%u err=%d\n",
620 __FUNCTION__, __LINE__,
621 err);
622 return err;
623 }
624
625 static int c2_service_destroy(struct iw_cm_id *cm_id)
626 {
627 int err;
628 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
629
630 err = c2_llp_service_destroy(cm_id);
631
632 return err;
633 }
634
635 static int c2_pseudo_up(struct net_device *netdev)
636 {
637 struct in_device *ind;
638 struct c2_dev *c2dev = netdev->priv;
639
640 ind = in_dev_get(netdev);
641 if (!ind)
642 return 0;
643
644 pr_debug("adding...\n");
645 for_ifa(ind) {
646 #ifdef DEBUG
647 u8 *ip = (u8 *) & ifa->ifa_address;
648
649 pr_debug("%s: %d.%d.%d.%d\n",
650 ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]);
651 #endif
652 c2_add_addr(c2dev, ifa->ifa_address, ifa->ifa_mask);
653 }
654 endfor_ifa(ind);
655 in_dev_put(ind);
656
657 return 0;
658 }
659
660 static int c2_pseudo_down(struct net_device *netdev)
661 {
662 struct in_device *ind;
663 struct c2_dev *c2dev = netdev->priv;
664
665 ind = in_dev_get(netdev);
666 if (!ind)
667 return 0;
668
669 pr_debug("deleting...\n");
670 for_ifa(ind) {
671 #ifdef DEBUG
672 u8 *ip = (u8 *) & ifa->ifa_address;
673
674 pr_debug("%s: %d.%d.%d.%d\n",
675 ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]);
676 #endif
677 c2_del_addr(c2dev, ifa->ifa_address, ifa->ifa_mask);
678 }
679 endfor_ifa(ind);
680 in_dev_put(ind);
681
682 return 0;
683 }
684
685 static int c2_pseudo_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
686 {
687 kfree_skb(skb);
688 return NETDEV_TX_OK;
689 }
690
691 static int c2_pseudo_change_mtu(struct net_device *netdev, int new_mtu)
692 {
693 int ret = 0;
694
695 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
696 return -EINVAL;
697
698 netdev->mtu = new_mtu;
699
700 /* TODO: Tell rnic about new rmda interface mtu */
701 return ret;
702 }
703
704 static void setup(struct net_device *netdev)
705 {
706 SET_MODULE_OWNER(netdev);
707 netdev->open = c2_pseudo_up;
708 netdev->stop = c2_pseudo_down;
709 netdev->hard_start_xmit = c2_pseudo_xmit_frame;
710 netdev->get_stats = NULL;
711 netdev->tx_timeout = NULL;
712 netdev->set_mac_address = NULL;
713 netdev->change_mtu = c2_pseudo_change_mtu;
714 netdev->watchdog_timeo = 0;
715 netdev->type = ARPHRD_ETHER;
716 netdev->mtu = 1500;
717 netdev->hard_header_len = ETH_HLEN;
718 netdev->addr_len = ETH_ALEN;
719 netdev->tx_queue_len = 0;
720 netdev->flags |= IFF_NOARP;
721 return;
722 }
723
724 static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev)
725 {
726 char name[IFNAMSIZ];
727 struct net_device *netdev;
728
729 /* change ethxxx to iwxxx */
730 strcpy(name, "iw");
731 strcat(name, &c2dev->netdev->name[3]);
732 netdev = alloc_netdev(sizeof(*netdev), name, setup);
733 if (!netdev) {
734 printk(KERN_ERR PFX "%s - etherdev alloc failed",
735 __FUNCTION__);
736 return NULL;
737 }
738
739 netdev->priv = c2dev;
740
741 SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev);
742
743 memcpy_fromio(netdev->dev_addr, c2dev->kva + C2_REGS_RDMA_ENADDR, 6);
744
745 /* Print out the MAC address */
746 pr_debug("%s: MAC %02X:%02X:%02X:%02X:%02X:%02X\n",
747 netdev->name,
748 netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
749 netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]);
750
751 #if 0
752 /* Disable network packets */
753 netif_stop_queue(netdev);
754 #endif
755 return netdev;
756 }
757
758 int c2_register_device(struct c2_dev *dev)
759 {
760 int ret = -ENOMEM;
761 int i;
762
763 /* Register pseudo network device */
764 dev->pseudo_netdev = c2_pseudo_netdev_init(dev);
765 if (!dev->pseudo_netdev)
766 goto out3;
767
768 ret = register_netdev(dev->pseudo_netdev);
769 if (ret)
770 goto out2;
771
772 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
773 strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX);
774 dev->ibdev.owner = THIS_MODULE;
775 dev->ibdev.uverbs_cmd_mask =
776 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
777 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
778 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
779 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
780 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
781 (1ull << IB_USER_VERBS_CMD_REG_MR) |
782 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
783 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
784 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
785 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
786 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
787 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
788 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
789 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
790 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
791 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
792 (1ull << IB_USER_VERBS_CMD_POST_RECV);
793
794 dev->ibdev.node_type = RDMA_NODE_RNIC;
795 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
796 memcpy(&dev->ibdev.node_guid, dev->pseudo_netdev->dev_addr, 6);
797 dev->ibdev.phys_port_cnt = 1;
798 dev->ibdev.dma_device = &dev->pcidev->dev;
799 dev->ibdev.query_device = c2_query_device;
800 dev->ibdev.query_port = c2_query_port;
801 dev->ibdev.modify_port = c2_modify_port;
802 dev->ibdev.query_pkey = c2_query_pkey;
803 dev->ibdev.query_gid = c2_query_gid;
804 dev->ibdev.alloc_ucontext = c2_alloc_ucontext;
805 dev->ibdev.dealloc_ucontext = c2_dealloc_ucontext;
806 dev->ibdev.mmap = c2_mmap_uar;
807 dev->ibdev.alloc_pd = c2_alloc_pd;
808 dev->ibdev.dealloc_pd = c2_dealloc_pd;
809 dev->ibdev.create_ah = c2_ah_create;
810 dev->ibdev.destroy_ah = c2_ah_destroy;
811 dev->ibdev.create_qp = c2_create_qp;
812 dev->ibdev.modify_qp = c2_modify_qp;
813 dev->ibdev.destroy_qp = c2_destroy_qp;
814 dev->ibdev.create_cq = c2_create_cq;
815 dev->ibdev.destroy_cq = c2_destroy_cq;
816 dev->ibdev.poll_cq = c2_poll_cq;
817 dev->ibdev.get_dma_mr = c2_get_dma_mr;
818 dev->ibdev.reg_phys_mr = c2_reg_phys_mr;
819 dev->ibdev.reg_user_mr = c2_reg_user_mr;
820 dev->ibdev.dereg_mr = c2_dereg_mr;
821
822 dev->ibdev.alloc_fmr = NULL;
823 dev->ibdev.unmap_fmr = NULL;
824 dev->ibdev.dealloc_fmr = NULL;
825 dev->ibdev.map_phys_fmr = NULL;
826
827 dev->ibdev.attach_mcast = c2_multicast_attach;
828 dev->ibdev.detach_mcast = c2_multicast_detach;
829 dev->ibdev.process_mad = c2_process_mad;
830
831 dev->ibdev.req_notify_cq = c2_arm_cq;
832 dev->ibdev.post_send = c2_post_send;
833 dev->ibdev.post_recv = c2_post_receive;
834
835 dev->ibdev.iwcm = kmalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL);
836 dev->ibdev.iwcm->add_ref = c2_add_ref;
837 dev->ibdev.iwcm->rem_ref = c2_rem_ref;
838 dev->ibdev.iwcm->get_qp = c2_get_qp;
839 dev->ibdev.iwcm->connect = c2_connect;
840 dev->ibdev.iwcm->accept = c2_accept;
841 dev->ibdev.iwcm->reject = c2_reject;
842 dev->ibdev.iwcm->create_listen = c2_service_create;
843 dev->ibdev.iwcm->destroy_listen = c2_service_destroy;
844
845 ret = ib_register_device(&dev->ibdev);
846 if (ret)
847 goto out1;
848
849 for (i = 0; i < ARRAY_SIZE(c2_class_attributes); ++i) {
850 ret = class_device_create_file(&dev->ibdev.class_dev,
851 c2_class_attributes[i]);
852 if (ret)
853 goto out0;
854 }
855 goto out3;
856
857 out0:
858 ib_unregister_device(&dev->ibdev);
859 out1:
860 unregister_netdev(dev->pseudo_netdev);
861 out2:
862 free_netdev(dev->pseudo_netdev);
863 out3:
864 pr_debug("%s:%u ret=%d\n", __FUNCTION__, __LINE__, ret);
865 return ret;
866 }
867
868 void c2_unregister_device(struct c2_dev *dev)
869 {
870 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
871 unregister_netdev(dev->pseudo_netdev);
872 free_netdev(dev->pseudo_netdev);
873 ib_unregister_device(&dev->ibdev);
874 }
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