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Diffstat (limited to 'drivers/infiniband/hw/amso1100/c2_provider.c')
-rw-r--r--drivers/infiniband/hw/amso1100/c2_provider.c869
1 files changed, 869 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/amso1100/c2_provider.c b/drivers/infiniband/hw/amso1100/c2_provider.c
new file mode 100644
index 000000000000..8fddc8cccdf3
--- /dev/null
+++ b/drivers/infiniband/hw/amso1100/c2_provider.c
@@ -0,0 +1,869 @@
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
53#include <asm/io.h>
54#include <asm/irq.h>
55#include <asm/byteorder.h>
56
57#include <rdma/ib_smi.h>
58#include <rdma/ib_user_verbs.h>
59#include "c2.h"
60#include "c2_provider.h"
61#include "c2_user.h"
62
63static int c2_query_device(struct ib_device *ibdev,
64 struct ib_device_attr *props)
65{
66 struct c2_dev *c2dev = to_c2dev(ibdev);
67
68 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
69
70 *props = c2dev->props;
71 return 0;
72}
73
74static int c2_query_port(struct ib_device *ibdev,
75 u8 port, struct ib_port_attr *props)
76{
77 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
78
79 props->max_mtu = IB_MTU_4096;
80 props->lid = 0;
81 props->lmc = 0;
82 props->sm_lid = 0;
83 props->sm_sl = 0;
84 props->state = IB_PORT_ACTIVE;
85 props->phys_state = 0;
86 props->port_cap_flags =
87 IB_PORT_CM_SUP |
88 IB_PORT_REINIT_SUP |
89 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
90 props->gid_tbl_len = 1;
91 props->pkey_tbl_len = 1;
92 props->qkey_viol_cntr = 0;
93 props->active_width = 1;
94 props->active_speed = 1;
95
96 return 0;
97}
98
99static int c2_modify_port(struct ib_device *ibdev,
100 u8 port, int port_modify_mask,
101 struct ib_port_modify *props)
102{
103 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
104 return 0;
105}
106
107static int c2_query_pkey(struct ib_device *ibdev,
108 u8 port, u16 index, u16 * pkey)
109{
110 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
111 *pkey = 0;
112 return 0;
113}
114
115static int c2_query_gid(struct ib_device *ibdev, u8 port,
116 int index, union ib_gid *gid)
117{
118 struct c2_dev *c2dev = to_c2dev(ibdev);
119
120 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
121 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
122 memcpy(&(gid->raw[0]), c2dev->pseudo_netdev->dev_addr, 6);
123
124 return 0;
125}
126
127/* Allocate the user context data structure. This keeps track
128 * of all objects associated with a particular user-mode client.
129 */
130static struct ib_ucontext *c2_alloc_ucontext(struct ib_device *ibdev,
131 struct ib_udata *udata)
132{
133 struct c2_ucontext *context;
134
135 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
136 context = kmalloc(sizeof(*context), GFP_KERNEL);
137 if (!context)
138 return ERR_PTR(-ENOMEM);
139
140 return &context->ibucontext;
141}
142
143static int c2_dealloc_ucontext(struct ib_ucontext *context)
144{
145 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
146 kfree(context);
147 return 0;
148}
149
150static int c2_mmap_uar(struct ib_ucontext *context, struct vm_area_struct *vma)
151{
152 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
153 return -ENOSYS;
154}
155
156static struct ib_pd *c2_alloc_pd(struct ib_device *ibdev,
157 struct ib_ucontext *context,
158 struct ib_udata *udata)
159{
160 struct c2_pd *pd;
161 int err;
162
163 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
164
165 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
166 if (!pd)
167 return ERR_PTR(-ENOMEM);
168
169 err = c2_pd_alloc(to_c2dev(ibdev), !context, pd);
170 if (err) {
171 kfree(pd);
172 return ERR_PTR(err);
173 }
174
175 if (context) {
176 if (ib_copy_to_udata(udata, &pd->pd_id, sizeof(__u32))) {
177 c2_pd_free(to_c2dev(ibdev), pd);
178 kfree(pd);
179 return ERR_PTR(-EFAULT);
180 }
181 }
182
183 return &pd->ibpd;
184}
185
186static int c2_dealloc_pd(struct ib_pd *pd)
187{
188 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
189 c2_pd_free(to_c2dev(pd->device), to_c2pd(pd));
190 kfree(pd);
191
192 return 0;
193}
194
195static struct ib_ah *c2_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
196{
197 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
198 return ERR_PTR(-ENOSYS);
199}
200
201static int c2_ah_destroy(struct ib_ah *ah)
202{
203 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
204 return -ENOSYS;
205}
206
207static void c2_add_ref(struct ib_qp *ibqp)
208{
209 struct c2_qp *qp;
210 BUG_ON(!ibqp);
211 qp = to_c2qp(ibqp);
212 atomic_inc(&qp->refcount);
213}
214
215static void c2_rem_ref(struct ib_qp *ibqp)
216{
217 struct c2_qp *qp;
218 BUG_ON(!ibqp);
219 qp = to_c2qp(ibqp);
220 if (atomic_dec_and_test(&qp->refcount))
221 wake_up(&qp->wait);
222}
223
224struct ib_qp *c2_get_qp(struct ib_device *device, int qpn)
225{
226 struct c2_dev* c2dev = to_c2dev(device);
227 struct c2_qp *qp;
228
229 qp = c2_find_qpn(c2dev, qpn);
230 pr_debug("%s Returning QP=%p for QPN=%d, device=%p, refcount=%d\n",
231 __FUNCTION__, qp, qpn, device,
232 (qp?atomic_read(&qp->refcount):0));
233
234 return (qp?&qp->ibqp:NULL);
235}
236
237static struct ib_qp *c2_create_qp(struct ib_pd *pd,
238 struct ib_qp_init_attr *init_attr,
239 struct ib_udata *udata)
240{
241 struct c2_qp *qp;
242 int err;
243
244 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
245
246 switch (init_attr->qp_type) {
247 case IB_QPT_RC:
248 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
249 if (!qp) {
250 pr_debug("%s: Unable to allocate QP\n", __FUNCTION__);
251 return ERR_PTR(-ENOMEM);
252 }
253 spin_lock_init(&qp->lock);
254 if (pd->uobject) {
255 /* userspace specific */
256 }
257
258 err = c2_alloc_qp(to_c2dev(pd->device),
259 to_c2pd(pd), init_attr, qp);
260
261 if (err && pd->uobject) {
262 /* userspace specific */
263 }
264
265 break;
266 default:
267 pr_debug("%s: Invalid QP type: %d\n", __FUNCTION__,
268 init_attr->qp_type);
269 return ERR_PTR(-EINVAL);
270 break;
271 }
272
273 if (err) {
274 kfree(qp);
275 return ERR_PTR(err);
276 }
277
278 return &qp->ibqp;
279}
280
281static int c2_destroy_qp(struct ib_qp *ib_qp)
282{
283 struct c2_qp *qp = to_c2qp(ib_qp);
284
285 pr_debug("%s:%u qp=%p,qp->state=%d\n",
286 __FUNCTION__, __LINE__,ib_qp,qp->state);
287 c2_free_qp(to_c2dev(ib_qp->device), qp);
288 kfree(qp);
289 return 0;
290}
291
292static struct ib_cq *c2_create_cq(struct ib_device *ibdev, int entries,
293 struct ib_ucontext *context,
294 struct ib_udata *udata)
295{
296 struct c2_cq *cq;
297 int err;
298
299 cq = kmalloc(sizeof(*cq), GFP_KERNEL);
300 if (!cq) {
301 pr_debug("%s: Unable to allocate CQ\n", __FUNCTION__);
302 return ERR_PTR(-ENOMEM);
303 }
304
305 err = c2_init_cq(to_c2dev(ibdev), entries, NULL, cq);
306 if (err) {
307 pr_debug("%s: error initializing CQ\n", __FUNCTION__);
308 kfree(cq);
309 return ERR_PTR(err);
310 }
311
312 return &cq->ibcq;
313}
314
315static int c2_destroy_cq(struct ib_cq *ib_cq)
316{
317 struct c2_cq *cq = to_c2cq(ib_cq);
318
319 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
320
321 c2_free_cq(to_c2dev(ib_cq->device), cq);
322 kfree(cq);
323
324 return 0;
325}
326
327static inline u32 c2_convert_access(int acc)
328{
329 return (acc & IB_ACCESS_REMOTE_WRITE ? C2_ACF_REMOTE_WRITE : 0) |
330 (acc & IB_ACCESS_REMOTE_READ ? C2_ACF_REMOTE_READ : 0) |
331 (acc & IB_ACCESS_LOCAL_WRITE ? C2_ACF_LOCAL_WRITE : 0) |
332 C2_ACF_LOCAL_READ | C2_ACF_WINDOW_BIND;
333}
334
335static struct ib_mr *c2_reg_phys_mr(struct ib_pd *ib_pd,
336 struct ib_phys_buf *buffer_list,
337 int num_phys_buf, int acc, u64 * iova_start)
338{
339 struct c2_mr *mr;
340 u64 *page_list;
341 u32 total_len;
342 int err, i, j, k, page_shift, pbl_depth;
343
344 pbl_depth = 0;
345 total_len = 0;
346
347 page_shift = PAGE_SHIFT;
348 /*
349 * If there is only 1 buffer we assume this could
350 * be a map of all phy mem...use a 32k page_shift.
351 */
352 if (num_phys_buf == 1)
353 page_shift += 3;
354
355 for (i = 0; i < num_phys_buf; i++) {
356
357 if (buffer_list[i].addr & ~PAGE_MASK) {
358 pr_debug("Unaligned Memory Buffer: 0x%x\n",
359 (unsigned int) buffer_list[i].addr);
360 return ERR_PTR(-EINVAL);
361 }
362
363 if (!buffer_list[i].size) {
364 pr_debug("Invalid Buffer Size\n");
365 return ERR_PTR(-EINVAL);
366 }
367
368 total_len += buffer_list[i].size;
369 pbl_depth += ALIGN(buffer_list[i].size,
370 (1 << page_shift)) >> page_shift;
371 }
372
373 page_list = vmalloc(sizeof(u64) * pbl_depth);
374 if (!page_list) {
375 pr_debug("couldn't vmalloc page_list of size %zd\n",
376 (sizeof(u64) * pbl_depth));
377 return ERR_PTR(-ENOMEM);
378 }
379
380 for (i = 0, j = 0; i < num_phys_buf; i++) {
381
382 int naddrs;
383
384 naddrs = ALIGN(buffer_list[i].size,
385 (1 << page_shift)) >> page_shift;
386 for (k = 0; k < naddrs; k++)
387 page_list[j++] = (buffer_list[i].addr +
388 (k << page_shift));
389 }
390
391 mr = kmalloc(sizeof(*mr), GFP_KERNEL);
392 if (!mr)
393 return ERR_PTR(-ENOMEM);
394
395 mr->pd = to_c2pd(ib_pd);
396 pr_debug("%s - page shift %d, pbl_depth %d, total_len %u, "
397 "*iova_start %llx, first pa %llx, last pa %llx\n",
398 __FUNCTION__, page_shift, pbl_depth, total_len,
399 *iova_start, page_list[0], page_list[pbl_depth-1]);
400 err = c2_nsmr_register_phys_kern(to_c2dev(ib_pd->device), page_list,
401 (1 << page_shift), pbl_depth,
402 total_len, 0, iova_start,
403 c2_convert_access(acc), mr);
404 vfree(page_list);
405 if (err) {
406 kfree(mr);
407 return ERR_PTR(err);
408 }
409
410 return &mr->ibmr;
411}
412
413static struct ib_mr *c2_get_dma_mr(struct ib_pd *pd, int acc)
414{
415 struct ib_phys_buf bl;
416 u64 kva = 0;
417
418 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
419
420 /* AMSO1100 limit */
421 bl.size = 0xffffffff;
422 bl.addr = 0;
423 return c2_reg_phys_mr(pd, &bl, 1, acc, &kva);
424}
425
426static struct ib_mr *c2_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
427 int acc, struct ib_udata *udata)
428{
429 u64 *pages;
430 u64 kva = 0;
431 int shift, n, len;
432 int i, j, k;
433 int err = 0;
434 struct ib_umem_chunk *chunk;
435 struct c2_pd *c2pd = to_c2pd(pd);
436 struct c2_mr *c2mr;
437
438 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
439 shift = ffs(region->page_size) - 1;
440
441 c2mr = kmalloc(sizeof(*c2mr), GFP_KERNEL);
442 if (!c2mr)
443 return ERR_PTR(-ENOMEM);
444 c2mr->pd = c2pd;
445
446 n = 0;
447 list_for_each_entry(chunk, &region->chunk_list, list)
448 n += chunk->nents;
449
450 pages = kmalloc(n * sizeof(u64), GFP_KERNEL);
451 if (!pages) {
452 err = -ENOMEM;
453 goto err;
454 }
455
456 i = 0;
457 list_for_each_entry(chunk, &region->chunk_list, list) {
458 for (j = 0; j < chunk->nmap; ++j) {
459 len = sg_dma_len(&chunk->page_list[j]) >> shift;
460 for (k = 0; k < len; ++k) {
461 pages[i++] =
462 sg_dma_address(&chunk->page_list[j]) +
463 (region->page_size * k);
464 }
465 }
466 }
467
468 kva = (u64)region->virt_base;
469 err = c2_nsmr_register_phys_kern(to_c2dev(pd->device),
470 pages,
471 region->page_size,
472 i,
473 region->length,
474 region->offset,
475 &kva,
476 c2_convert_access(acc),
477 c2mr);
478 kfree(pages);
479 if (err) {
480 kfree(c2mr);
481 return ERR_PTR(err);
482 }
483 return &c2mr->ibmr;
484
485err:
486 kfree(c2mr);
487 return ERR_PTR(err);
488}
489
490static int c2_dereg_mr(struct ib_mr *ib_mr)
491{
492 struct c2_mr *mr = to_c2mr(ib_mr);
493 int err;
494
495 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
496
497 err = c2_stag_dealloc(to_c2dev(ib_mr->device), ib_mr->lkey);
498 if (err)
499 pr_debug("c2_stag_dealloc failed: %d\n", err);
500 else
501 kfree(mr);
502
503 return err;
504}
505
506static ssize_t show_rev(struct class_device *cdev, char *buf)
507{
508 struct c2_dev *dev = container_of(cdev, struct c2_dev, ibdev.class_dev);
509 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
510 return sprintf(buf, "%x\n", dev->props.hw_ver);
511}
512
513static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
514{
515 struct c2_dev *dev = container_of(cdev, struct c2_dev, ibdev.class_dev);
516 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
517 return sprintf(buf, "%x.%x.%x\n",
518 (int) (dev->props.fw_ver >> 32),
519 (int) (dev->props.fw_ver >> 16) & 0xffff,
520 (int) (dev->props.fw_ver & 0xffff));
521}
522
523static ssize_t show_hca(struct class_device *cdev, char *buf)
524{
525 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
526 return sprintf(buf, "AMSO1100\n");
527}
528
529static ssize_t show_board(struct class_device *cdev, char *buf)
530{
531 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
532 return sprintf(buf, "%.*s\n", 32, "AMSO1100 Board ID");
533}
534
535static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
536static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
537static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
538static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
539
540static struct class_device_attribute *c2_class_attributes[] = {
541 &class_device_attr_hw_rev,
542 &class_device_attr_fw_ver,
543 &class_device_attr_hca_type,
544 &class_device_attr_board_id
545};
546
547static int c2_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
548 int attr_mask, struct ib_udata *udata)
549{
550 int err;
551
552 err =
553 c2_qp_modify(to_c2dev(ibqp->device), to_c2qp(ibqp), attr,
554 attr_mask);
555
556 return err;
557}
558
559static int c2_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
560{
561 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
562 return -ENOSYS;
563}
564
565static int c2_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
566{
567 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
568 return -ENOSYS;
569}
570
571static int c2_process_mad(struct ib_device *ibdev,
572 int mad_flags,
573 u8 port_num,
574 struct ib_wc *in_wc,
575 struct ib_grh *in_grh,
576 struct ib_mad *in_mad, struct ib_mad *out_mad)
577{
578 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
579 return -ENOSYS;
580}
581
582static int c2_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
583{
584 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
585
586 /* Request a connection */
587 return c2_llp_connect(cm_id, iw_param);
588}
589
590static int c2_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
591{
592 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
593
594 /* Accept the new connection */
595 return c2_llp_accept(cm_id, iw_param);
596}
597
598static int c2_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
599{
600 int err;
601
602 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
603
604 err = c2_llp_reject(cm_id, pdata, pdata_len);
605 return err;
606}
607
608static int c2_service_create(struct iw_cm_id *cm_id, int backlog)
609{
610 int err;
611
612 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
613 err = c2_llp_service_create(cm_id, backlog);
614 pr_debug("%s:%u err=%d\n",
615 __FUNCTION__, __LINE__,
616 err);
617 return err;
618}
619
620static int c2_service_destroy(struct iw_cm_id *cm_id)
621{
622 int err;
623 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
624
625 err = c2_llp_service_destroy(cm_id);
626
627 return err;
628}
629
630static int c2_pseudo_up(struct net_device *netdev)
631{
632 struct in_device *ind;
633 struct c2_dev *c2dev = netdev->priv;
634
635 ind = in_dev_get(netdev);
636 if (!ind)
637 return 0;
638
639 pr_debug("adding...\n");
640 for_ifa(ind) {
641#ifdef DEBUG
642 u8 *ip = (u8 *) & ifa->ifa_address;
643
644 pr_debug("%s: %d.%d.%d.%d\n",
645 ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]);
646#endif
647 c2_add_addr(c2dev, ifa->ifa_address, ifa->ifa_mask);
648 }
649 endfor_ifa(ind);
650 in_dev_put(ind);
651
652 return 0;
653}
654
655static int c2_pseudo_down(struct net_device *netdev)
656{
657 struct in_device *ind;
658 struct c2_dev *c2dev = netdev->priv;
659
660 ind = in_dev_get(netdev);
661 if (!ind)
662 return 0;
663
664 pr_debug("deleting...\n");
665 for_ifa(ind) {
666#ifdef DEBUG
667 u8 *ip = (u8 *) & ifa->ifa_address;
668
669 pr_debug("%s: %d.%d.%d.%d\n",
670 ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]);
671#endif
672 c2_del_addr(c2dev, ifa->ifa_address, ifa->ifa_mask);
673 }
674 endfor_ifa(ind);
675 in_dev_put(ind);
676
677 return 0;
678}
679
680static int c2_pseudo_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
681{
682 kfree_skb(skb);
683 return NETDEV_TX_OK;
684}
685
686static int c2_pseudo_change_mtu(struct net_device *netdev, int new_mtu)
687{
688 int ret = 0;
689
690 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
691 return -EINVAL;
692
693 netdev->mtu = new_mtu;
694
695 /* TODO: Tell rnic about new rmda interface mtu */
696 return ret;
697}
698
699static void setup(struct net_device *netdev)
700{
701 SET_MODULE_OWNER(netdev);
702 netdev->open = c2_pseudo_up;
703 netdev->stop = c2_pseudo_down;
704 netdev->hard_start_xmit = c2_pseudo_xmit_frame;
705 netdev->get_stats = NULL;
706 netdev->tx_timeout = NULL;
707 netdev->set_mac_address = NULL;
708 netdev->change_mtu = c2_pseudo_change_mtu;
709 netdev->watchdog_timeo = 0;
710 netdev->type = ARPHRD_ETHER;
711 netdev->mtu = 1500;
712 netdev->hard_header_len = ETH_HLEN;
713 netdev->addr_len = ETH_ALEN;
714 netdev->tx_queue_len = 0;
715 netdev->flags |= IFF_NOARP;
716 return;
717}
718
719static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev)
720{
721 char name[IFNAMSIZ];
722 struct net_device *netdev;
723
724 /* change ethxxx to iwxxx */
725 strcpy(name, "iw");
726 strcat(name, &c2dev->netdev->name[3]);
727 netdev = alloc_netdev(sizeof(*netdev), name, setup);
728 if (!netdev) {
729 printk(KERN_ERR PFX "%s - etherdev alloc failed",
730 __FUNCTION__);
731 return NULL;
732 }
733
734 netdev->priv = c2dev;
735
736 SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev);
737
738 memcpy_fromio(netdev->dev_addr, c2dev->kva + C2_REGS_RDMA_ENADDR, 6);
739
740 /* Print out the MAC address */
741 pr_debug("%s: MAC %02X:%02X:%02X:%02X:%02X:%02X\n",
742 netdev->name,
743 netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
744 netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]);
745
746#if 0
747 /* Disable network packets */
748 netif_stop_queue(netdev);
749#endif
750 return netdev;
751}
752
753int c2_register_device(struct c2_dev *dev)
754{
755 int ret;
756 int i;
757
758 /* Register pseudo network device */
759 dev->pseudo_netdev = c2_pseudo_netdev_init(dev);
760 if (dev->pseudo_netdev) {
761 ret = register_netdev(dev->pseudo_netdev);
762 if (ret) {
763 printk(KERN_ERR PFX
764 "Unable to register netdev, ret = %d\n", ret);
765 free_netdev(dev->pseudo_netdev);
766 return ret;
767 }
768 }
769
770 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
771 strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX);
772 dev->ibdev.owner = THIS_MODULE;
773 dev->ibdev.uverbs_cmd_mask =
774 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
775 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
776 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
777 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
778 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
779 (1ull << IB_USER_VERBS_CMD_REG_MR) |
780 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
781 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
782 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
783 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
784 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
785 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
786 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
787 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
788 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
789 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
790 (1ull << IB_USER_VERBS_CMD_POST_RECV);
791
792 dev->ibdev.node_type = RDMA_NODE_RNIC;
793 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
794 memcpy(&dev->ibdev.node_guid, dev->pseudo_netdev->dev_addr, 6);
795 dev->ibdev.phys_port_cnt = 1;
796 dev->ibdev.dma_device = &dev->pcidev->dev;
797 dev->ibdev.class_dev.dev = &dev->pcidev->dev;
798 dev->ibdev.query_device = c2_query_device;
799 dev->ibdev.query_port = c2_query_port;
800 dev->ibdev.modify_port = c2_modify_port;
801 dev->ibdev.query_pkey = c2_query_pkey;
802 dev->ibdev.query_gid = c2_query_gid;
803 dev->ibdev.alloc_ucontext = c2_alloc_ucontext;
804 dev->ibdev.dealloc_ucontext = c2_dealloc_ucontext;
805 dev->ibdev.mmap = c2_mmap_uar;
806 dev->ibdev.alloc_pd = c2_alloc_pd;
807 dev->ibdev.dealloc_pd = c2_dealloc_pd;
808 dev->ibdev.create_ah = c2_ah_create;
809 dev->ibdev.destroy_ah = c2_ah_destroy;
810 dev->ibdev.create_qp = c2_create_qp;
811 dev->ibdev.modify_qp = c2_modify_qp;
812 dev->ibdev.destroy_qp = c2_destroy_qp;
813 dev->ibdev.create_cq = c2_create_cq;
814 dev->ibdev.destroy_cq = c2_destroy_cq;
815 dev->ibdev.poll_cq = c2_poll_cq;
816 dev->ibdev.get_dma_mr = c2_get_dma_mr;
817 dev->ibdev.reg_phys_mr = c2_reg_phys_mr;
818 dev->ibdev.reg_user_mr = c2_reg_user_mr;
819 dev->ibdev.dereg_mr = c2_dereg_mr;
820
821 dev->ibdev.alloc_fmr = NULL;
822 dev->ibdev.unmap_fmr = NULL;
823 dev->ibdev.dealloc_fmr = NULL;
824 dev->ibdev.map_phys_fmr = NULL;
825
826 dev->ibdev.attach_mcast = c2_multicast_attach;
827 dev->ibdev.detach_mcast = c2_multicast_detach;
828 dev->ibdev.process_mad = c2_process_mad;
829
830 dev->ibdev.req_notify_cq = c2_arm_cq;
831 dev->ibdev.post_send = c2_post_send;
832 dev->ibdev.post_recv = c2_post_receive;
833
834 dev->ibdev.iwcm = kmalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL);
835 dev->ibdev.iwcm->add_ref = c2_add_ref;
836 dev->ibdev.iwcm->rem_ref = c2_rem_ref;
837 dev->ibdev.iwcm->get_qp = c2_get_qp;
838 dev->ibdev.iwcm->connect = c2_connect;
839 dev->ibdev.iwcm->accept = c2_accept;
840 dev->ibdev.iwcm->reject = c2_reject;
841 dev->ibdev.iwcm->create_listen = c2_service_create;
842 dev->ibdev.iwcm->destroy_listen = c2_service_destroy;
843
844 ret = ib_register_device(&dev->ibdev);
845 if (ret)
846 return ret;
847
848 for (i = 0; i < ARRAY_SIZE(c2_class_attributes); ++i) {
849 ret = class_device_create_file(&dev->ibdev.class_dev,
850 c2_class_attributes[i]);
851 if (ret) {
852 unregister_netdev(dev->pseudo_netdev);
853 free_netdev(dev->pseudo_netdev);
854 ib_unregister_device(&dev->ibdev);
855 return ret;
856 }
857 }
858
859 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
860 return 0;
861}
862
863void c2_unregister_device(struct c2_dev *dev)
864{
865 pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
866 unregister_netdev(dev->pseudo_netdev);
867 free_netdev(dev->pseudo_netdev);
868 ib_unregister_device(&dev->ibdev);
869}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-25 19:16:22 -0500