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Merge remote-tracking branch 'regmap/fix/cache' into tmp
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / resource_tracker.c
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies.
4 * All rights reserved.
5 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36 #include <linux/sched.h>
37 #include <linux/pci.h>
38 #include <linux/errno.h>
39 #include <linux/kernel.h>
40 #include <linux/io.h>
41 #include <linux/slab.h>
42 #include <linux/mlx4/cmd.h>
43 #include <linux/mlx4/qp.h>
44 #include <linux/if_ether.h>
45 #include <linux/etherdevice.h>
46
47 #include "mlx4.h"
48 #include "fw.h"
49
50 #define MLX4_MAC_VALID (1ull << 63)
51
52 struct mac_res {
53 struct list_head list;
54 u64 mac;
55 u8 port;
56 };
57
58 struct res_common {
59 struct list_head list;
60 struct rb_node node;
61 u64 res_id;
62 int owner;
63 int state;
64 int from_state;
65 int to_state;
66 int removing;
67 };
68
69 enum {
70 RES_ANY_BUSY = 1
71 };
72
73 struct res_gid {
74 struct list_head list;
75 u8 gid[16];
76 enum mlx4_protocol prot;
77 enum mlx4_steer_type steer;
78 };
79
80 enum res_qp_states {
81 RES_QP_BUSY = RES_ANY_BUSY,
82
83 /* QP number was allocated */
84 RES_QP_RESERVED,
85
86 /* ICM memory for QP context was mapped */
87 RES_QP_MAPPED,
88
89 /* QP is in hw ownership */
90 RES_QP_HW
91 };
92
93 struct res_qp {
94 struct res_common com;
95 struct res_mtt *mtt;
96 struct res_cq *rcq;
97 struct res_cq *scq;
98 struct res_srq *srq;
99 struct list_head mcg_list;
100 spinlock_t mcg_spl;
101 int local_qpn;
102 };
103
104 enum res_mtt_states {
105 RES_MTT_BUSY = RES_ANY_BUSY,
106 RES_MTT_ALLOCATED,
107 };
108
109 static inline const char *mtt_states_str(enum res_mtt_states state)
110 {
111 switch (state) {
112 case RES_MTT_BUSY: return "RES_MTT_BUSY";
113 case RES_MTT_ALLOCATED: return "RES_MTT_ALLOCATED";
114 default: return "Unknown";
115 }
116 }
117
118 struct res_mtt {
119 struct res_common com;
120 int order;
121 atomic_t ref_count;
122 };
123
124 enum res_mpt_states {
125 RES_MPT_BUSY = RES_ANY_BUSY,
126 RES_MPT_RESERVED,
127 RES_MPT_MAPPED,
128 RES_MPT_HW,
129 };
130
131 struct res_mpt {
132 struct res_common com;
133 struct res_mtt *mtt;
134 int key;
135 };
136
137 enum res_eq_states {
138 RES_EQ_BUSY = RES_ANY_BUSY,
139 RES_EQ_RESERVED,
140 RES_EQ_HW,
141 };
142
143 struct res_eq {
144 struct res_common com;
145 struct res_mtt *mtt;
146 };
147
148 enum res_cq_states {
149 RES_CQ_BUSY = RES_ANY_BUSY,
150 RES_CQ_ALLOCATED,
151 RES_CQ_HW,
152 };
153
154 struct res_cq {
155 struct res_common com;
156 struct res_mtt *mtt;
157 atomic_t ref_count;
158 };
159
160 enum res_srq_states {
161 RES_SRQ_BUSY = RES_ANY_BUSY,
162 RES_SRQ_ALLOCATED,
163 RES_SRQ_HW,
164 };
165
166 struct res_srq {
167 struct res_common com;
168 struct res_mtt *mtt;
169 struct res_cq *cq;
170 atomic_t ref_count;
171 };
172
173 enum res_counter_states {
174 RES_COUNTER_BUSY = RES_ANY_BUSY,
175 RES_COUNTER_ALLOCATED,
176 };
177
178 struct res_counter {
179 struct res_common com;
180 int port;
181 };
182
183 enum res_xrcdn_states {
184 RES_XRCD_BUSY = RES_ANY_BUSY,
185 RES_XRCD_ALLOCATED,
186 };
187
188 struct res_xrcdn {
189 struct res_common com;
190 int port;
191 };
192
193 enum res_fs_rule_states {
194 RES_FS_RULE_BUSY = RES_ANY_BUSY,
195 RES_FS_RULE_ALLOCATED,
196 };
197
198 struct res_fs_rule {
199 struct res_common com;
200 };
201
202 static void *res_tracker_lookup(struct rb_root *root, u64 res_id)
203 {
204 struct rb_node *node = root->rb_node;
205
206 while (node) {
207 struct res_common *res = container_of(node, struct res_common,
208 node);
209
210 if (res_id < res->res_id)
211 node = node->rb_left;
212 else if (res_id > res->res_id)
213 node = node->rb_right;
214 else
215 return res;
216 }
217 return NULL;
218 }
219
220 static int res_tracker_insert(struct rb_root *root, struct res_common *res)
221 {
222 struct rb_node **new = &(root->rb_node), *parent = NULL;
223
224 /* Figure out where to put new node */
225 while (*new) {
226 struct res_common *this = container_of(*new, struct res_common,
227 node);
228
229 parent = *new;
230 if (res->res_id < this->res_id)
231 new = &((*new)->rb_left);
232 else if (res->res_id > this->res_id)
233 new = &((*new)->rb_right);
234 else
235 return -EEXIST;
236 }
237
238 /* Add new node and rebalance tree. */
239 rb_link_node(&res->node, parent, new);
240 rb_insert_color(&res->node, root);
241
242 return 0;
243 }
244
245 enum qp_transition {
246 QP_TRANS_INIT2RTR,
247 QP_TRANS_RTR2RTS,
248 QP_TRANS_RTS2RTS,
249 QP_TRANS_SQERR2RTS,
250 QP_TRANS_SQD2SQD,
251 QP_TRANS_SQD2RTS
252 };
253
254 /* For Debug uses */
255 static const char *ResourceType(enum mlx4_resource rt)
256 {
257 switch (rt) {
258 case RES_QP: return "RES_QP";
259 case RES_CQ: return "RES_CQ";
260 case RES_SRQ: return "RES_SRQ";
261 case RES_MPT: return "RES_MPT";
262 case RES_MTT: return "RES_MTT";
263 case RES_MAC: return "RES_MAC";
264 case RES_EQ: return "RES_EQ";
265 case RES_COUNTER: return "RES_COUNTER";
266 case RES_FS_RULE: return "RES_FS_RULE";
267 case RES_XRCD: return "RES_XRCD";
268 default: return "Unknown resource type !!!";
269 };
270 }
271
272 int mlx4_init_resource_tracker(struct mlx4_dev *dev)
273 {
274 struct mlx4_priv *priv = mlx4_priv(dev);
275 int i;
276 int t;
277
278 priv->mfunc.master.res_tracker.slave_list =
279 kzalloc(dev->num_slaves * sizeof(struct slave_list),
280 GFP_KERNEL);
281 if (!priv->mfunc.master.res_tracker.slave_list)
282 return -ENOMEM;
283
284 for (i = 0 ; i < dev->num_slaves; i++) {
285 for (t = 0; t < MLX4_NUM_OF_RESOURCE_TYPE; ++t)
286 INIT_LIST_HEAD(&priv->mfunc.master.res_tracker.
287 slave_list[i].res_list[t]);
288 mutex_init(&priv->mfunc.master.res_tracker.slave_list[i].mutex);
289 }
290
291 mlx4_dbg(dev, "Started init_resource_tracker: %ld slaves\n",
292 dev->num_slaves);
293 for (i = 0 ; i < MLX4_NUM_OF_RESOURCE_TYPE; i++)
294 priv->mfunc.master.res_tracker.res_tree[i] = RB_ROOT;
295
296 spin_lock_init(&priv->mfunc.master.res_tracker.lock);
297 return 0 ;
298 }
299
300 void mlx4_free_resource_tracker(struct mlx4_dev *dev,
301 enum mlx4_res_tracker_free_type type)
302 {
303 struct mlx4_priv *priv = mlx4_priv(dev);
304 int i;
305
306 if (priv->mfunc.master.res_tracker.slave_list) {
307 if (type != RES_TR_FREE_STRUCTS_ONLY)
308 for (i = 0 ; i < dev->num_slaves; i++)
309 if (type == RES_TR_FREE_ALL ||
310 dev->caps.function != i)
311 mlx4_delete_all_resources_for_slave(dev, i);
312
313 if (type != RES_TR_FREE_SLAVES_ONLY) {
314 kfree(priv->mfunc.master.res_tracker.slave_list);
315 priv->mfunc.master.res_tracker.slave_list = NULL;
316 }
317 }
318 }
319
320 static void update_pkey_index(struct mlx4_dev *dev, int slave,
321 struct mlx4_cmd_mailbox *inbox)
322 {
323 u8 sched = *(u8 *)(inbox->buf + 64);
324 u8 orig_index = *(u8 *)(inbox->buf + 35);
325 u8 new_index;
326 struct mlx4_priv *priv = mlx4_priv(dev);
327 int port;
328
329 port = (sched >> 6 & 1) + 1;
330
331 new_index = priv->virt2phys_pkey[slave][port - 1][orig_index];
332 *(u8 *)(inbox->buf + 35) = new_index;
333 }
334
335 static void update_gid(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *inbox,
336 u8 slave)
337 {
338 struct mlx4_qp_context *qp_ctx = inbox->buf + 8;
339 enum mlx4_qp_optpar optpar = be32_to_cpu(*(__be32 *) inbox->buf);
340 u32 ts = (be32_to_cpu(qp_ctx->flags) >> 16) & 0xff;
341
342 if (MLX4_QP_ST_UD == ts)
343 qp_ctx->pri_path.mgid_index = 0x80 | slave;
344
345 if (MLX4_QP_ST_RC == ts || MLX4_QP_ST_UC == ts) {
346 if (optpar & MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH)
347 qp_ctx->pri_path.mgid_index = slave & 0x7F;
348 if (optpar & MLX4_QP_OPTPAR_ALT_ADDR_PATH)
349 qp_ctx->alt_path.mgid_index = slave & 0x7F;
350 }
351 }
352
353 static int mpt_mask(struct mlx4_dev *dev)
354 {
355 return dev->caps.num_mpts - 1;
356 }
357
358 static void *find_res(struct mlx4_dev *dev, int res_id,
359 enum mlx4_resource type)
360 {
361 struct mlx4_priv *priv = mlx4_priv(dev);
362
363 return res_tracker_lookup(&priv->mfunc.master.res_tracker.res_tree[type],
364 res_id);
365 }
366
367 static int get_res(struct mlx4_dev *dev, int slave, u64 res_id,
368 enum mlx4_resource type,
369 void *res)
370 {
371 struct res_common *r;
372 int err = 0;
373
374 spin_lock_irq(mlx4_tlock(dev));
375 r = find_res(dev, res_id, type);
376 if (!r) {
377 err = -ENONET;
378 goto exit;
379 }
380
381 if (r->state == RES_ANY_BUSY) {
382 err = -EBUSY;
383 goto exit;
384 }
385
386 if (r->owner != slave) {
387 err = -EPERM;
388 goto exit;
389 }
390
391 r->from_state = r->state;
392 r->state = RES_ANY_BUSY;
393
394 if (res)
395 *((struct res_common **)res) = r;
396
397 exit:
398 spin_unlock_irq(mlx4_tlock(dev));
399 return err;
400 }
401
402 int mlx4_get_slave_from_resource_id(struct mlx4_dev *dev,
403 enum mlx4_resource type,
404 u64 res_id, int *slave)
405 {
406
407 struct res_common *r;
408 int err = -ENOENT;
409 int id = res_id;
410
411 if (type == RES_QP)
412 id &= 0x7fffff;
413 spin_lock(mlx4_tlock(dev));
414
415 r = find_res(dev, id, type);
416 if (r) {
417 *slave = r->owner;
418 err = 0;
419 }
420 spin_unlock(mlx4_tlock(dev));
421
422 return err;
423 }
424
425 static void put_res(struct mlx4_dev *dev, int slave, u64 res_id,
426 enum mlx4_resource type)
427 {
428 struct res_common *r;
429
430 spin_lock_irq(mlx4_tlock(dev));
431 r = find_res(dev, res_id, type);
432 if (r)
433 r->state = r->from_state;
434 spin_unlock_irq(mlx4_tlock(dev));
435 }
436
437 static struct res_common *alloc_qp_tr(int id)
438 {
439 struct res_qp *ret;
440
441 ret = kzalloc(sizeof *ret, GFP_KERNEL);
442 if (!ret)
443 return NULL;
444
445 ret->com.res_id = id;
446 ret->com.state = RES_QP_RESERVED;
447 ret->local_qpn = id;
448 INIT_LIST_HEAD(&ret->mcg_list);
449 spin_lock_init(&ret->mcg_spl);
450
451 return &ret->com;
452 }
453
454 static struct res_common *alloc_mtt_tr(int id, int order)
455 {
456 struct res_mtt *ret;
457
458 ret = kzalloc(sizeof *ret, GFP_KERNEL);
459 if (!ret)
460 return NULL;
461
462 ret->com.res_id = id;
463 ret->order = order;
464 ret->com.state = RES_MTT_ALLOCATED;
465 atomic_set(&ret->ref_count, 0);
466
467 return &ret->com;
468 }
469
470 static struct res_common *alloc_mpt_tr(int id, int key)
471 {
472 struct res_mpt *ret;
473
474 ret = kzalloc(sizeof *ret, GFP_KERNEL);
475 if (!ret)
476 return NULL;
477
478 ret->com.res_id = id;
479 ret->com.state = RES_MPT_RESERVED;
480 ret->key = key;
481
482 return &ret->com;
483 }
484
485 static struct res_common *alloc_eq_tr(int id)
486 {
487 struct res_eq *ret;
488
489 ret = kzalloc(sizeof *ret, GFP_KERNEL);
490 if (!ret)
491 return NULL;
492
493 ret->com.res_id = id;
494 ret->com.state = RES_EQ_RESERVED;
495
496 return &ret->com;
497 }
498
499 static struct res_common *alloc_cq_tr(int id)
500 {
501 struct res_cq *ret;
502
503 ret = kzalloc(sizeof *ret, GFP_KERNEL);
504 if (!ret)
505 return NULL;
506
507 ret->com.res_id = id;
508 ret->com.state = RES_CQ_ALLOCATED;
509 atomic_set(&ret->ref_count, 0);
510
511 return &ret->com;
512 }
513
514 static struct res_common *alloc_srq_tr(int id)
515 {
516 struct res_srq *ret;
517
518 ret = kzalloc(sizeof *ret, GFP_KERNEL);
519 if (!ret)
520 return NULL;
521
522 ret->com.res_id = id;
523 ret->com.state = RES_SRQ_ALLOCATED;
524 atomic_set(&ret->ref_count, 0);
525
526 return &ret->com;
527 }
528
529 static struct res_common *alloc_counter_tr(int id)
530 {
531 struct res_counter *ret;
532
533 ret = kzalloc(sizeof *ret, GFP_KERNEL);
534 if (!ret)
535 return NULL;
536
537 ret->com.res_id = id;
538 ret->com.state = RES_COUNTER_ALLOCATED;
539
540 return &ret->com;
541 }
542
543 static struct res_common *alloc_xrcdn_tr(int id)
544 {
545 struct res_xrcdn *ret;
546
547 ret = kzalloc(sizeof *ret, GFP_KERNEL);
548 if (!ret)
549 return NULL;
550
551 ret->com.res_id = id;
552 ret->com.state = RES_XRCD_ALLOCATED;
553
554 return &ret->com;
555 }
556
557 static struct res_common *alloc_fs_rule_tr(u64 id)
558 {
559 struct res_fs_rule *ret;
560
561 ret = kzalloc(sizeof *ret, GFP_KERNEL);
562 if (!ret)
563 return NULL;
564
565 ret->com.res_id = id;
566 ret->com.state = RES_FS_RULE_ALLOCATED;
567
568 return &ret->com;
569 }
570
571 static struct res_common *alloc_tr(u64 id, enum mlx4_resource type, int slave,
572 int extra)
573 {
574 struct res_common *ret;
575
576 switch (type) {
577 case RES_QP:
578 ret = alloc_qp_tr(id);
579 break;
580 case RES_MPT:
581 ret = alloc_mpt_tr(id, extra);
582 break;
583 case RES_MTT:
584 ret = alloc_mtt_tr(id, extra);
585 break;
586 case RES_EQ:
587 ret = alloc_eq_tr(id);
588 break;
589 case RES_CQ:
590 ret = alloc_cq_tr(id);
591 break;
592 case RES_SRQ:
593 ret = alloc_srq_tr(id);
594 break;
595 case RES_MAC:
596 printk(KERN_ERR "implementation missing\n");
597 return NULL;
598 case RES_COUNTER:
599 ret = alloc_counter_tr(id);
600 break;
601 case RES_XRCD:
602 ret = alloc_xrcdn_tr(id);
603 break;
604 case RES_FS_RULE:
605 ret = alloc_fs_rule_tr(id);
606 break;
607 default:
608 return NULL;
609 }
610 if (ret)
611 ret->owner = slave;
612
613 return ret;
614 }
615
616 static int add_res_range(struct mlx4_dev *dev, int slave, u64 base, int count,
617 enum mlx4_resource type, int extra)
618 {
619 int i;
620 int err;
621 struct mlx4_priv *priv = mlx4_priv(dev);
622 struct res_common **res_arr;
623 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
624 struct rb_root *root = &tracker->res_tree[type];
625
626 res_arr = kzalloc(count * sizeof *res_arr, GFP_KERNEL);
627 if (!res_arr)
628 return -ENOMEM;
629
630 for (i = 0; i < count; ++i) {
631 res_arr[i] = alloc_tr(base + i, type, slave, extra);
632 if (!res_arr[i]) {
633 for (--i; i >= 0; --i)
634 kfree(res_arr[i]);
635
636 kfree(res_arr);
637 return -ENOMEM;
638 }
639 }
640
641 spin_lock_irq(mlx4_tlock(dev));
642 for (i = 0; i < count; ++i) {
643 if (find_res(dev, base + i, type)) {
644 err = -EEXIST;
645 goto undo;
646 }
647 err = res_tracker_insert(root, res_arr[i]);
648 if (err)
649 goto undo;
650 list_add_tail(&res_arr[i]->list,
651 &tracker->slave_list[slave].res_list[type]);
652 }
653 spin_unlock_irq(mlx4_tlock(dev));
654 kfree(res_arr);
655
656 return 0;
657
658 undo:
659 for (--i; i >= base; --i)
660 rb_erase(&res_arr[i]->node, root);
661
662 spin_unlock_irq(mlx4_tlock(dev));
663
664 for (i = 0; i < count; ++i)
665 kfree(res_arr[i]);
666
667 kfree(res_arr);
668
669 return err;
670 }
671
672 static int remove_qp_ok(struct res_qp *res)
673 {
674 if (res->com.state == RES_QP_BUSY)
675 return -EBUSY;
676 else if (res->com.state != RES_QP_RESERVED)
677 return -EPERM;
678
679 return 0;
680 }
681
682 static int remove_mtt_ok(struct res_mtt *res, int order)
683 {
684 if (res->com.state == RES_MTT_BUSY ||
685 atomic_read(&res->ref_count)) {
686 printk(KERN_DEBUG "%s-%d: state %s, ref_count %d\n",
687 __func__, __LINE__,
688 mtt_states_str(res->com.state),
689 atomic_read(&res->ref_count));
690 return -EBUSY;
691 } else if (res->com.state != RES_MTT_ALLOCATED)
692 return -EPERM;
693 else if (res->order != order)
694 return -EINVAL;
695
696 return 0;
697 }
698
699 static int remove_mpt_ok(struct res_mpt *res)
700 {
701 if (res->com.state == RES_MPT_BUSY)
702 return -EBUSY;
703 else if (res->com.state != RES_MPT_RESERVED)
704 return -EPERM;
705
706 return 0;
707 }
708
709 static int remove_eq_ok(struct res_eq *res)
710 {
711 if (res->com.state == RES_MPT_BUSY)
712 return -EBUSY;
713 else if (res->com.state != RES_MPT_RESERVED)
714 return -EPERM;
715
716 return 0;
717 }
718
719 static int remove_counter_ok(struct res_counter *res)
720 {
721 if (res->com.state == RES_COUNTER_BUSY)
722 return -EBUSY;
723 else if (res->com.state != RES_COUNTER_ALLOCATED)
724 return -EPERM;
725
726 return 0;
727 }
728
729 static int remove_xrcdn_ok(struct res_xrcdn *res)
730 {
731 if (res->com.state == RES_XRCD_BUSY)
732 return -EBUSY;
733 else if (res->com.state != RES_XRCD_ALLOCATED)
734 return -EPERM;
735
736 return 0;
737 }
738
739 static int remove_fs_rule_ok(struct res_fs_rule *res)
740 {
741 if (res->com.state == RES_FS_RULE_BUSY)
742 return -EBUSY;
743 else if (res->com.state != RES_FS_RULE_ALLOCATED)
744 return -EPERM;
745
746 return 0;
747 }
748
749 static int remove_cq_ok(struct res_cq *res)
750 {
751 if (res->com.state == RES_CQ_BUSY)
752 return -EBUSY;
753 else if (res->com.state != RES_CQ_ALLOCATED)
754 return -EPERM;
755
756 return 0;
757 }
758
759 static int remove_srq_ok(struct res_srq *res)
760 {
761 if (res->com.state == RES_SRQ_BUSY)
762 return -EBUSY;
763 else if (res->com.state != RES_SRQ_ALLOCATED)
764 return -EPERM;
765
766 return 0;
767 }
768
769 static int remove_ok(struct res_common *res, enum mlx4_resource type, int extra)
770 {
771 switch (type) {
772 case RES_QP:
773 return remove_qp_ok((struct res_qp *)res);
774 case RES_CQ:
775 return remove_cq_ok((struct res_cq *)res);
776 case RES_SRQ:
777 return remove_srq_ok((struct res_srq *)res);
778 case RES_MPT:
779 return remove_mpt_ok((struct res_mpt *)res);
780 case RES_MTT:
781 return remove_mtt_ok((struct res_mtt *)res, extra);
782 case RES_MAC:
783 return -ENOSYS;
784 case RES_EQ:
785 return remove_eq_ok((struct res_eq *)res);
786 case RES_COUNTER:
787 return remove_counter_ok((struct res_counter *)res);
788 case RES_XRCD:
789 return remove_xrcdn_ok((struct res_xrcdn *)res);
790 case RES_FS_RULE:
791 return remove_fs_rule_ok((struct res_fs_rule *)res);
792 default:
793 return -EINVAL;
794 }
795 }
796
797 static int rem_res_range(struct mlx4_dev *dev, int slave, u64 base, int count,
798 enum mlx4_resource type, int extra)
799 {
800 u64 i;
801 int err;
802 struct mlx4_priv *priv = mlx4_priv(dev);
803 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
804 struct res_common *r;
805
806 spin_lock_irq(mlx4_tlock(dev));
807 for (i = base; i < base + count; ++i) {
808 r = res_tracker_lookup(&tracker->res_tree[type], i);
809 if (!r) {
810 err = -ENOENT;
811 goto out;
812 }
813 if (r->owner != slave) {
814 err = -EPERM;
815 goto out;
816 }
817 err = remove_ok(r, type, extra);
818 if (err)
819 goto out;
820 }
821
822 for (i = base; i < base + count; ++i) {
823 r = res_tracker_lookup(&tracker->res_tree[type], i);
824 rb_erase(&r->node, &tracker->res_tree[type]);
825 list_del(&r->list);
826 kfree(r);
827 }
828 err = 0;
829
830 out:
831 spin_unlock_irq(mlx4_tlock(dev));
832
833 return err;
834 }
835
836 static int qp_res_start_move_to(struct mlx4_dev *dev, int slave, int qpn,
837 enum res_qp_states state, struct res_qp **qp,
838 int alloc)
839 {
840 struct mlx4_priv *priv = mlx4_priv(dev);
841 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
842 struct res_qp *r;
843 int err = 0;
844
845 spin_lock_irq(mlx4_tlock(dev));
846 r = res_tracker_lookup(&tracker->res_tree[RES_QP], qpn);
847 if (!r)
848 err = -ENOENT;
849 else if (r->com.owner != slave)
850 err = -EPERM;
851 else {
852 switch (state) {
853 case RES_QP_BUSY:
854 mlx4_dbg(dev, "%s: failed RES_QP, 0x%llx\n",
855 __func__, r->com.res_id);
856 err = -EBUSY;
857 break;
858
859 case RES_QP_RESERVED:
860 if (r->com.state == RES_QP_MAPPED && !alloc)
861 break;
862
863 mlx4_dbg(dev, "failed RES_QP, 0x%llx\n", r->com.res_id);
864 err = -EINVAL;
865 break;
866
867 case RES_QP_MAPPED:
868 if ((r->com.state == RES_QP_RESERVED && alloc) ||
869 r->com.state == RES_QP_HW)
870 break;
871 else {
872 mlx4_dbg(dev, "failed RES_QP, 0x%llx\n",
873 r->com.res_id);
874 err = -EINVAL;
875 }
876
877 break;
878
879 case RES_QP_HW:
880 if (r->com.state != RES_QP_MAPPED)
881 err = -EINVAL;
882 break;
883 default:
884 err = -EINVAL;
885 }
886
887 if (!err) {
888 r->com.from_state = r->com.state;
889 r->com.to_state = state;
890 r->com.state = RES_QP_BUSY;
891 if (qp)
892 *qp = r;
893 }
894 }
895
896 spin_unlock_irq(mlx4_tlock(dev));
897
898 return err;
899 }
900
901 static int mr_res_start_move_to(struct mlx4_dev *dev, int slave, int index,
902 enum res_mpt_states state, struct res_mpt **mpt)
903 {
904 struct mlx4_priv *priv = mlx4_priv(dev);
905 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
906 struct res_mpt *r;
907 int err = 0;
908
909 spin_lock_irq(mlx4_tlock(dev));
910 r = res_tracker_lookup(&tracker->res_tree[RES_MPT], index);
911 if (!r)
912 err = -ENOENT;
913 else if (r->com.owner != slave)
914 err = -EPERM;
915 else {
916 switch (state) {
917 case RES_MPT_BUSY:
918 err = -EINVAL;
919 break;
920
921 case RES_MPT_RESERVED:
922 if (r->com.state != RES_MPT_MAPPED)
923 err = -EINVAL;
924 break;
925
926 case RES_MPT_MAPPED:
927 if (r->com.state != RES_MPT_RESERVED &&
928 r->com.state != RES_MPT_HW)
929 err = -EINVAL;
930 break;
931
932 case RES_MPT_HW:
933 if (r->com.state != RES_MPT_MAPPED)
934 err = -EINVAL;
935 break;
936 default:
937 err = -EINVAL;
938 }
939
940 if (!err) {
941 r->com.from_state = r->com.state;
942 r->com.to_state = state;
943 r->com.state = RES_MPT_BUSY;
944 if (mpt)
945 *mpt = r;
946 }
947 }
948
949 spin_unlock_irq(mlx4_tlock(dev));
950
951 return err;
952 }
953
954 static int eq_res_start_move_to(struct mlx4_dev *dev, int slave, int index,
955 enum res_eq_states state, struct res_eq **eq)
956 {
957 struct mlx4_priv *priv = mlx4_priv(dev);
958 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
959 struct res_eq *r;
960 int err = 0;
961
962 spin_lock_irq(mlx4_tlock(dev));
963 r = res_tracker_lookup(&tracker->res_tree[RES_EQ], index);
964 if (!r)
965 err = -ENOENT;
966 else if (r->com.owner != slave)
967 err = -EPERM;
968 else {
969 switch (state) {
970 case RES_EQ_BUSY:
971 err = -EINVAL;
972 break;
973
974 case RES_EQ_RESERVED:
975 if (r->com.state != RES_EQ_HW)
976 err = -EINVAL;
977 break;
978
979 case RES_EQ_HW:
980 if (r->com.state != RES_EQ_RESERVED)
981 err = -EINVAL;
982 break;
983
984 default:
985 err = -EINVAL;
986 }
987
988 if (!err) {
989 r->com.from_state = r->com.state;
990 r->com.to_state = state;
991 r->com.state = RES_EQ_BUSY;
992 if (eq)
993 *eq = r;
994 }
995 }
996
997 spin_unlock_irq(mlx4_tlock(dev));
998
999 return err;
1000 }
1001
1002 static int cq_res_start_move_to(struct mlx4_dev *dev, int slave, int cqn,
1003 enum res_cq_states state, struct res_cq **cq)
1004 {
1005 struct mlx4_priv *priv = mlx4_priv(dev);
1006 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
1007 struct res_cq *r;
1008 int err;
1009
1010 spin_lock_irq(mlx4_tlock(dev));
1011 r = res_tracker_lookup(&tracker->res_tree[RES_CQ], cqn);
1012 if (!r)
1013 err = -ENOENT;
1014 else if (r->com.owner != slave)
1015 err = -EPERM;
1016 else {
1017 switch (state) {
1018 case RES_CQ_BUSY:
1019 err = -EBUSY;
1020 break;
1021
1022 case RES_CQ_ALLOCATED:
1023 if (r->com.state != RES_CQ_HW)
1024 err = -EINVAL;
1025 else if (atomic_read(&r->ref_count))
1026 err = -EBUSY;
1027 else
1028 err = 0;
1029 break;
1030
1031 case RES_CQ_HW:
1032 if (r->com.state != RES_CQ_ALLOCATED)
1033 err = -EINVAL;
1034 else
1035 err = 0;
1036 break;
1037
1038 default:
1039 err = -EINVAL;
1040 }
1041
1042 if (!err) {
1043 r->com.from_state = r->com.state;
1044 r->com.to_state = state;
1045 r->com.state = RES_CQ_BUSY;
1046 if (cq)
1047 *cq = r;
1048 }
1049 }
1050
1051 spin_unlock_irq(mlx4_tlock(dev));
1052
1053 return err;
1054 }
1055
1056 static int srq_res_start_move_to(struct mlx4_dev *dev, int slave, int index,
1057 enum res_cq_states state, struct res_srq **srq)
1058 {
1059 struct mlx4_priv *priv = mlx4_priv(dev);
1060 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
1061 struct res_srq *r;
1062 int err = 0;
1063
1064 spin_lock_irq(mlx4_tlock(dev));
1065 r = res_tracker_lookup(&tracker->res_tree[RES_SRQ], index);
1066 if (!r)
1067 err = -ENOENT;
1068 else if (r->com.owner != slave)
1069 err = -EPERM;
1070 else {
1071 switch (state) {
1072 case RES_SRQ_BUSY:
1073 err = -EINVAL;
1074 break;
1075
1076 case RES_SRQ_ALLOCATED:
1077 if (r->com.state != RES_SRQ_HW)
1078 err = -EINVAL;
1079 else if (atomic_read(&r->ref_count))
1080 err = -EBUSY;
1081 break;
1082
1083 case RES_SRQ_HW:
1084 if (r->com.state != RES_SRQ_ALLOCATED)
1085 err = -EINVAL;
1086 break;
1087
1088 default:
1089 err = -EINVAL;
1090 }
1091
1092 if (!err) {
1093 r->com.from_state = r->com.state;
1094 r->com.to_state = state;
1095 r->com.state = RES_SRQ_BUSY;
1096 if (srq)
1097 *srq = r;
1098 }
1099 }
1100
1101 spin_unlock_irq(mlx4_tlock(dev));
1102
1103 return err;
1104 }
1105
1106 static void res_abort_move(struct mlx4_dev *dev, int slave,
1107 enum mlx4_resource type, int id)
1108 {
1109 struct mlx4_priv *priv = mlx4_priv(dev);
1110 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
1111 struct res_common *r;
1112
1113 spin_lock_irq(mlx4_tlock(dev));
1114 r = res_tracker_lookup(&tracker->res_tree[type], id);
1115 if (r && (r->owner == slave))
1116 r->state = r->from_state;
1117 spin_unlock_irq(mlx4_tlock(dev));
1118 }
1119
1120 static void res_end_move(struct mlx4_dev *dev, int slave,
1121 enum mlx4_resource type, int id)
1122 {
1123 struct mlx4_priv *priv = mlx4_priv(dev);
1124 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
1125 struct res_common *r;
1126
1127 spin_lock_irq(mlx4_tlock(dev));
1128 r = res_tracker_lookup(&tracker->res_tree[type], id);
1129 if (r && (r->owner == slave))
1130 r->state = r->to_state;
1131 spin_unlock_irq(mlx4_tlock(dev));
1132 }
1133
1134 static int valid_reserved(struct mlx4_dev *dev, int slave, int qpn)
1135 {
1136 return mlx4_is_qp_reserved(dev, qpn) &&
1137 (mlx4_is_master(dev) || mlx4_is_guest_proxy(dev, slave, qpn));
1138 }
1139
1140 static int fw_reserved(struct mlx4_dev *dev, int qpn)
1141 {
1142 return qpn < dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
1143 }
1144
1145 static int qp_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1146 u64 in_param, u64 *out_param)
1147 {
1148 int err;
1149 int count;
1150 int align;
1151 int base;
1152 int qpn;
1153
1154 switch (op) {
1155 case RES_OP_RESERVE:
1156 count = get_param_l(&in_param);
1157 align = get_param_h(&in_param);
1158 err = __mlx4_qp_reserve_range(dev, count, align, &base);
1159 if (err)
1160 return err;
1161
1162 err = add_res_range(dev, slave, base, count, RES_QP, 0);
1163 if (err) {
1164 __mlx4_qp_release_range(dev, base, count);
1165 return err;
1166 }
1167 set_param_l(out_param, base);
1168 break;
1169 case RES_OP_MAP_ICM:
1170 qpn = get_param_l(&in_param) & 0x7fffff;
1171 if (valid_reserved(dev, slave, qpn)) {
1172 err = add_res_range(dev, slave, qpn, 1, RES_QP, 0);
1173 if (err)
1174 return err;
1175 }
1176
1177 err = qp_res_start_move_to(dev, slave, qpn, RES_QP_MAPPED,
1178 NULL, 1);
1179 if (err)
1180 return err;
1181
1182 if (!fw_reserved(dev, qpn)) {
1183 err = __mlx4_qp_alloc_icm(dev, qpn);
1184 if (err) {
1185 res_abort_move(dev, slave, RES_QP, qpn);
1186 return err;
1187 }
1188 }
1189
1190 res_end_move(dev, slave, RES_QP, qpn);
1191 break;
1192
1193 default:
1194 err = -EINVAL;
1195 break;
1196 }
1197 return err;
1198 }
1199
1200 static int mtt_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1201 u64 in_param, u64 *out_param)
1202 {
1203 int err = -EINVAL;
1204 int base;
1205 int order;
1206
1207 if (op != RES_OP_RESERVE_AND_MAP)
1208 return err;
1209
1210 order = get_param_l(&in_param);
1211 base = __mlx4_alloc_mtt_range(dev, order);
1212 if (base == -1)
1213 return -ENOMEM;
1214
1215 err = add_res_range(dev, slave, base, 1, RES_MTT, order);
1216 if (err)
1217 __mlx4_free_mtt_range(dev, base, order);
1218 else
1219 set_param_l(out_param, base);
1220
1221 return err;
1222 }
1223
1224 static int mpt_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1225 u64 in_param, u64 *out_param)
1226 {
1227 int err = -EINVAL;
1228 int index;
1229 int id;
1230 struct res_mpt *mpt;
1231
1232 switch (op) {
1233 case RES_OP_RESERVE:
1234 index = __mlx4_mpt_reserve(dev);
1235 if (index == -1)
1236 break;
1237 id = index & mpt_mask(dev);
1238
1239 err = add_res_range(dev, slave, id, 1, RES_MPT, index);
1240 if (err) {
1241 __mlx4_mpt_release(dev, index);
1242 break;
1243 }
1244 set_param_l(out_param, index);
1245 break;
1246 case RES_OP_MAP_ICM:
1247 index = get_param_l(&in_param);
1248 id = index & mpt_mask(dev);
1249 err = mr_res_start_move_to(dev, slave, id,
1250 RES_MPT_MAPPED, &mpt);
1251 if (err)
1252 return err;
1253
1254 err = __mlx4_mpt_alloc_icm(dev, mpt->key);
1255 if (err) {
1256 res_abort_move(dev, slave, RES_MPT, id);
1257 return err;
1258 }
1259
1260 res_end_move(dev, slave, RES_MPT, id);
1261 break;
1262 }
1263 return err;
1264 }
1265
1266 static int cq_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1267 u64 in_param, u64 *out_param)
1268 {
1269 int cqn;
1270 int err;
1271
1272 switch (op) {
1273 case RES_OP_RESERVE_AND_MAP:
1274 err = __mlx4_cq_alloc_icm(dev, &cqn);
1275 if (err)
1276 break;
1277
1278 err = add_res_range(dev, slave, cqn, 1, RES_CQ, 0);
1279 if (err) {
1280 __mlx4_cq_free_icm(dev, cqn);
1281 break;
1282 }
1283
1284 set_param_l(out_param, cqn);
1285 break;
1286
1287 default:
1288 err = -EINVAL;
1289 }
1290
1291 return err;
1292 }
1293
1294 static int srq_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1295 u64 in_param, u64 *out_param)
1296 {
1297 int srqn;
1298 int err;
1299
1300 switch (op) {
1301 case RES_OP_RESERVE_AND_MAP:
1302 err = __mlx4_srq_alloc_icm(dev, &srqn);
1303 if (err)
1304 break;
1305
1306 err = add_res_range(dev, slave, srqn, 1, RES_SRQ, 0);
1307 if (err) {
1308 __mlx4_srq_free_icm(dev, srqn);
1309 break;
1310 }
1311
1312 set_param_l(out_param, srqn);
1313 break;
1314
1315 default:
1316 err = -EINVAL;
1317 }
1318
1319 return err;
1320 }
1321
1322 static int mac_add_to_slave(struct mlx4_dev *dev, int slave, u64 mac, int port)
1323 {
1324 struct mlx4_priv *priv = mlx4_priv(dev);
1325 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
1326 struct mac_res *res;
1327
1328 res = kzalloc(sizeof *res, GFP_KERNEL);
1329 if (!res)
1330 return -ENOMEM;
1331 res->mac = mac;
1332 res->port = (u8) port;
1333 list_add_tail(&res->list,
1334 &tracker->slave_list[slave].res_list[RES_MAC]);
1335 return 0;
1336 }
1337
1338 static void mac_del_from_slave(struct mlx4_dev *dev, int slave, u64 mac,
1339 int port)
1340 {
1341 struct mlx4_priv *priv = mlx4_priv(dev);
1342 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
1343 struct list_head *mac_list =
1344 &tracker->slave_list[slave].res_list[RES_MAC];
1345 struct mac_res *res, *tmp;
1346
1347 list_for_each_entry_safe(res, tmp, mac_list, list) {
1348 if (res->mac == mac && res->port == (u8) port) {
1349 list_del(&res->list);
1350 kfree(res);
1351 break;
1352 }
1353 }
1354 }
1355
1356 static void rem_slave_macs(struct mlx4_dev *dev, int slave)
1357 {
1358 struct mlx4_priv *priv = mlx4_priv(dev);
1359 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
1360 struct list_head *mac_list =
1361 &tracker->slave_list[slave].res_list[RES_MAC];
1362 struct mac_res *res, *tmp;
1363
1364 list_for_each_entry_safe(res, tmp, mac_list, list) {
1365 list_del(&res->list);
1366 __mlx4_unregister_mac(dev, res->port, res->mac);
1367 kfree(res);
1368 }
1369 }
1370
1371 static int mac_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1372 u64 in_param, u64 *out_param)
1373 {
1374 int err = -EINVAL;
1375 int port;
1376 u64 mac;
1377
1378 if (op != RES_OP_RESERVE_AND_MAP)
1379 return err;
1380
1381 port = get_param_l(out_param);
1382 mac = in_param;
1383
1384 err = __mlx4_register_mac(dev, port, mac);
1385 if (err >= 0) {
1386 set_param_l(out_param, err);
1387 err = 0;
1388 }
1389
1390 if (!err) {
1391 err = mac_add_to_slave(dev, slave, mac, port);
1392 if (err)
1393 __mlx4_unregister_mac(dev, port, mac);
1394 }
1395 return err;
1396 }
1397
1398 static int vlan_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1399 u64 in_param, u64 *out_param)
1400 {
1401 return 0;
1402 }
1403
1404 static int counter_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1405 u64 in_param, u64 *out_param)
1406 {
1407 u32 index;
1408 int err;
1409
1410 if (op != RES_OP_RESERVE)
1411 return -EINVAL;
1412
1413 err = __mlx4_counter_alloc(dev, &index);
1414 if (err)
1415 return err;
1416
1417 err = add_res_range(dev, slave, index, 1, RES_COUNTER, 0);
1418 if (err)
1419 __mlx4_counter_free(dev, index);
1420 else
1421 set_param_l(out_param, index);
1422
1423 return err;
1424 }
1425
1426 static int xrcdn_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1427 u64 in_param, u64 *out_param)
1428 {
1429 u32 xrcdn;
1430 int err;
1431
1432 if (op != RES_OP_RESERVE)
1433 return -EINVAL;
1434
1435 err = __mlx4_xrcd_alloc(dev, &xrcdn);
1436 if (err)
1437 return err;
1438
1439 err = add_res_range(dev, slave, xrcdn, 1, RES_XRCD, 0);
1440 if (err)
1441 __mlx4_xrcd_free(dev, xrcdn);
1442 else
1443 set_param_l(out_param, xrcdn);
1444
1445 return err;
1446 }
1447
1448 int mlx4_ALLOC_RES_wrapper(struct mlx4_dev *dev, int slave,
1449 struct mlx4_vhcr *vhcr,
1450 struct mlx4_cmd_mailbox *inbox,
1451 struct mlx4_cmd_mailbox *outbox,
1452 struct mlx4_cmd_info *cmd)
1453 {
1454 int err;
1455 int alop = vhcr->op_modifier;
1456
1457 switch (vhcr->in_modifier) {
1458 case RES_QP:
1459 err = qp_alloc_res(dev, slave, vhcr->op_modifier, alop,
1460 vhcr->in_param, &vhcr->out_param);
1461 break;
1462
1463 case RES_MTT:
1464 err = mtt_alloc_res(dev, slave, vhcr->op_modifier, alop,
1465 vhcr->in_param, &vhcr->out_param);
1466 break;
1467
1468 case RES_MPT:
1469 err = mpt_alloc_res(dev, slave, vhcr->op_modifier, alop,
1470 vhcr->in_param, &vhcr->out_param);
1471 break;
1472
1473 case RES_CQ:
1474 err = cq_alloc_res(dev, slave, vhcr->op_modifier, alop,
1475 vhcr->in_param, &vhcr->out_param);
1476 break;
1477
1478 case RES_SRQ:
1479 err = srq_alloc_res(dev, slave, vhcr->op_modifier, alop,
1480 vhcr->in_param, &vhcr->out_param);
1481 break;
1482
1483 case RES_MAC:
1484 err = mac_alloc_res(dev, slave, vhcr->op_modifier, alop,
1485 vhcr->in_param, &vhcr->out_param);
1486 break;
1487
1488 case RES_VLAN:
1489 err = vlan_alloc_res(dev, slave, vhcr->op_modifier, alop,
1490 vhcr->in_param, &vhcr->out_param);
1491 break;
1492
1493 case RES_COUNTER:
1494 err = counter_alloc_res(dev, slave, vhcr->op_modifier, alop,
1495 vhcr->in_param, &vhcr->out_param);
1496 break;
1497
1498 case RES_XRCD:
1499 err = xrcdn_alloc_res(dev, slave, vhcr->op_modifier, alop,
1500 vhcr->in_param, &vhcr->out_param);
1501 break;
1502
1503 default:
1504 err = -EINVAL;
1505 break;
1506 }
1507
1508 return err;
1509 }
1510
1511 static int qp_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1512 u64 in_param)
1513 {
1514 int err;
1515 int count;
1516 int base;
1517 int qpn;
1518
1519 switch (op) {
1520 case RES_OP_RESERVE:
1521 base = get_param_l(&in_param) & 0x7fffff;
1522 count = get_param_h(&in_param);
1523 err = rem_res_range(dev, slave, base, count, RES_QP, 0);
1524 if (err)
1525 break;
1526 __mlx4_qp_release_range(dev, base, count);
1527 break;
1528 case RES_OP_MAP_ICM:
1529 qpn = get_param_l(&in_param) & 0x7fffff;
1530 err = qp_res_start_move_to(dev, slave, qpn, RES_QP_RESERVED,
1531 NULL, 0);
1532 if (err)
1533 return err;
1534
1535 if (!fw_reserved(dev, qpn))
1536 __mlx4_qp_free_icm(dev, qpn);
1537
1538 res_end_move(dev, slave, RES_QP, qpn);
1539
1540 if (valid_reserved(dev, slave, qpn))
1541 err = rem_res_range(dev, slave, qpn, 1, RES_QP, 0);
1542 break;
1543 default:
1544 err = -EINVAL;
1545 break;
1546 }
1547 return err;
1548 }
1549
1550 static int mtt_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1551 u64 in_param, u64 *out_param)
1552 {
1553 int err = -EINVAL;
1554 int base;
1555 int order;
1556
1557 if (op != RES_OP_RESERVE_AND_MAP)
1558 return err;
1559
1560 base = get_param_l(&in_param);
1561 order = get_param_h(&in_param);
1562 err = rem_res_range(dev, slave, base, 1, RES_MTT, order);
1563 if (!err)
1564 __mlx4_free_mtt_range(dev, base, order);
1565 return err;
1566 }
1567
1568 static int mpt_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1569 u64 in_param)
1570 {
1571 int err = -EINVAL;
1572 int index;
1573 int id;
1574 struct res_mpt *mpt;
1575
1576 switch (op) {
1577 case RES_OP_RESERVE:
1578 index = get_param_l(&in_param);
1579 id = index & mpt_mask(dev);
1580 err = get_res(dev, slave, id, RES_MPT, &mpt);
1581 if (err)
1582 break;
1583 index = mpt->key;
1584 put_res(dev, slave, id, RES_MPT);
1585
1586 err = rem_res_range(dev, slave, id, 1, RES_MPT, 0);
1587 if (err)
1588 break;
1589 __mlx4_mpt_release(dev, index);
1590 break;
1591 case RES_OP_MAP_ICM:
1592 index = get_param_l(&in_param);
1593 id = index & mpt_mask(dev);
1594 err = mr_res_start_move_to(dev, slave, id,
1595 RES_MPT_RESERVED, &mpt);
1596 if (err)
1597 return err;
1598
1599 __mlx4_mpt_free_icm(dev, mpt->key);
1600 res_end_move(dev, slave, RES_MPT, id);
1601 return err;
1602 break;
1603 default:
1604 err = -EINVAL;
1605 break;
1606 }
1607 return err;
1608 }
1609
1610 static int cq_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1611 u64 in_param, u64 *out_param)
1612 {
1613 int cqn;
1614 int err;
1615
1616 switch (op) {
1617 case RES_OP_RESERVE_AND_MAP:
1618 cqn = get_param_l(&in_param);
1619 err = rem_res_range(dev, slave, cqn, 1, RES_CQ, 0);
1620 if (err)
1621 break;
1622
1623 __mlx4_cq_free_icm(dev, cqn);
1624 break;
1625
1626 default:
1627 err = -EINVAL;
1628 break;
1629 }
1630
1631 return err;
1632 }
1633
1634 static int srq_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1635 u64 in_param, u64 *out_param)
1636 {
1637 int srqn;
1638 int err;
1639
1640 switch (op) {
1641 case RES_OP_RESERVE_AND_MAP:
1642 srqn = get_param_l(&in_param);
1643 err = rem_res_range(dev, slave, srqn, 1, RES_SRQ, 0);
1644 if (err)
1645 break;
1646
1647 __mlx4_srq_free_icm(dev, srqn);
1648 break;
1649
1650 default:
1651 err = -EINVAL;
1652 break;
1653 }
1654
1655 return err;
1656 }
1657
1658 static int mac_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1659 u64 in_param, u64 *out_param)
1660 {
1661 int port;
1662 int err = 0;
1663
1664 switch (op) {
1665 case RES_OP_RESERVE_AND_MAP:
1666 port = get_param_l(out_param);
1667 mac_del_from_slave(dev, slave, in_param, port);
1668 __mlx4_unregister_mac(dev, port, in_param);
1669 break;
1670 default:
1671 err = -EINVAL;
1672 break;
1673 }
1674
1675 return err;
1676
1677 }
1678
1679 static int vlan_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1680 u64 in_param, u64 *out_param)
1681 {
1682 return 0;
1683 }
1684
1685 static int counter_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1686 u64 in_param, u64 *out_param)
1687 {
1688 int index;
1689 int err;
1690
1691 if (op != RES_OP_RESERVE)
1692 return -EINVAL;
1693
1694 index = get_param_l(&in_param);
1695 err = rem_res_range(dev, slave, index, 1, RES_COUNTER, 0);
1696 if (err)
1697 return err;
1698
1699 __mlx4_counter_free(dev, index);
1700
1701 return err;
1702 }
1703
1704 static int xrcdn_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
1705 u64 in_param, u64 *out_param)
1706 {
1707 int xrcdn;
1708 int err;
1709
1710 if (op != RES_OP_RESERVE)
1711 return -EINVAL;
1712
1713 xrcdn = get_param_l(&in_param);
1714 err = rem_res_range(dev, slave, xrcdn, 1, RES_XRCD, 0);
1715 if (err)
1716 return err;
1717
1718 __mlx4_xrcd_free(dev, xrcdn);
1719
1720 return err;
1721 }
1722
1723 int mlx4_FREE_RES_wrapper(struct mlx4_dev *dev, int slave,
1724 struct mlx4_vhcr *vhcr,
1725 struct mlx4_cmd_mailbox *inbox,
1726 struct mlx4_cmd_mailbox *outbox,
1727 struct mlx4_cmd_info *cmd)
1728 {
1729 int err = -EINVAL;
1730 int alop = vhcr->op_modifier;
1731
1732 switch (vhcr->in_modifier) {
1733 case RES_QP:
1734 err = qp_free_res(dev, slave, vhcr->op_modifier, alop,
1735 vhcr->in_param);
1736 break;
1737
1738 case RES_MTT:
1739 err = mtt_free_res(dev, slave, vhcr->op_modifier, alop,
1740 vhcr->in_param, &vhcr->out_param);
1741 break;
1742
1743 case RES_MPT:
1744 err = mpt_free_res(dev, slave, vhcr->op_modifier, alop,
1745 vhcr->in_param);
1746 break;
1747
1748 case RES_CQ:
1749 err = cq_free_res(dev, slave, vhcr->op_modifier, alop,
1750 vhcr->in_param, &vhcr->out_param);
1751 break;
1752
1753 case RES_SRQ:
1754 err = srq_free_res(dev, slave, vhcr->op_modifier, alop,
1755 vhcr->in_param, &vhcr->out_param);
1756 break;
1757
1758 case RES_MAC:
1759 err = mac_free_res(dev, slave, vhcr->op_modifier, alop,
1760 vhcr->in_param, &vhcr->out_param);
1761 break;
1762
1763 case RES_VLAN:
1764 err = vlan_free_res(dev, slave, vhcr->op_modifier, alop,
1765 vhcr->in_param, &vhcr->out_param);
1766 break;
1767
1768 case RES_COUNTER:
1769 err = counter_free_res(dev, slave, vhcr->op_modifier, alop,
1770 vhcr->in_param, &vhcr->out_param);
1771 break;
1772
1773 case RES_XRCD:
1774 err = xrcdn_free_res(dev, slave, vhcr->op_modifier, alop,
1775 vhcr->in_param, &vhcr->out_param);
1776
1777 default:
1778 break;
1779 }
1780 return err;
1781 }
1782
1783 /* ugly but other choices are uglier */
1784 static int mr_phys_mpt(struct mlx4_mpt_entry *mpt)
1785 {
1786 return (be32_to_cpu(mpt->flags) >> 9) & 1;
1787 }
1788
1789 static int mr_get_mtt_addr(struct mlx4_mpt_entry *mpt)
1790 {
1791 return (int)be64_to_cpu(mpt->mtt_addr) & 0xfffffff8;
1792 }
1793
1794 static int mr_get_mtt_size(struct mlx4_mpt_entry *mpt)
1795 {
1796 return be32_to_cpu(mpt->mtt_sz);
1797 }
1798
1799 static u32 mr_get_pd(struct mlx4_mpt_entry *mpt)
1800 {
1801 return be32_to_cpu(mpt->pd_flags) & 0x00ffffff;
1802 }
1803
1804 static int mr_is_fmr(struct mlx4_mpt_entry *mpt)
1805 {
1806 return be32_to_cpu(mpt->pd_flags) & MLX4_MPT_PD_FLAG_FAST_REG;
1807 }
1808
1809 static int mr_is_bind_enabled(struct mlx4_mpt_entry *mpt)
1810 {
1811 return be32_to_cpu(mpt->flags) & MLX4_MPT_FLAG_BIND_ENABLE;
1812 }
1813
1814 static int mr_is_region(struct mlx4_mpt_entry *mpt)
1815 {
1816 return be32_to_cpu(mpt->flags) & MLX4_MPT_FLAG_REGION;
1817 }
1818
1819 static int qp_get_mtt_addr(struct mlx4_qp_context *qpc)
1820 {
1821 return be32_to_cpu(qpc->mtt_base_addr_l) & 0xfffffff8;
1822 }
1823
1824 static int srq_get_mtt_addr(struct mlx4_srq_context *srqc)
1825 {
1826 return be32_to_cpu(srqc->mtt_base_addr_l) & 0xfffffff8;
1827 }
1828
1829 static int qp_get_mtt_size(struct mlx4_qp_context *qpc)
1830 {
1831 int page_shift = (qpc->log_page_size & 0x3f) + 12;
1832 int log_sq_size = (qpc->sq_size_stride >> 3) & 0xf;
1833 int log_sq_sride = qpc->sq_size_stride & 7;
1834 int log_rq_size = (qpc->rq_size_stride >> 3) & 0xf;
1835 int log_rq_stride = qpc->rq_size_stride & 7;
1836 int srq = (be32_to_cpu(qpc->srqn) >> 24) & 1;
1837 int rss = (be32_to_cpu(qpc->flags) >> 13) & 1;
1838 int xrc = (be32_to_cpu(qpc->local_qpn) >> 23) & 1;
1839 int sq_size;
1840 int rq_size;
1841 int total_pages;
1842 int total_mem;
1843 int page_offset = (be32_to_cpu(qpc->params2) >> 6) & 0x3f;
1844
1845 sq_size = 1 << (log_sq_size + log_sq_sride + 4);
1846 rq_size = (srq|rss|xrc) ? 0 : (1 << (log_rq_size + log_rq_stride + 4));
1847 total_mem = sq_size + rq_size;
1848 total_pages =
1849 roundup_pow_of_two((total_mem + (page_offset << 6)) >>
1850 page_shift);
1851
1852 return total_pages;
1853 }
1854
1855 static int check_mtt_range(struct mlx4_dev *dev, int slave, int start,
1856 int size, struct res_mtt *mtt)
1857 {
1858 int res_start = mtt->com.res_id;
1859 int res_size = (1 << mtt->order);
1860
1861 if (start < res_start || start + size > res_start + res_size)
1862 return -EPERM;
1863 return 0;
1864 }
1865
1866 int mlx4_SW2HW_MPT_wrapper(struct mlx4_dev *dev, int slave,
1867 struct mlx4_vhcr *vhcr,
1868 struct mlx4_cmd_mailbox *inbox,
1869 struct mlx4_cmd_mailbox *outbox,
1870 struct mlx4_cmd_info *cmd)
1871 {
1872 int err;
1873 int index = vhcr->in_modifier;
1874 struct res_mtt *mtt;
1875 struct res_mpt *mpt;
1876 int mtt_base = mr_get_mtt_addr(inbox->buf) / dev->caps.mtt_entry_sz;
1877 int phys;
1878 int id;
1879 u32 pd;
1880 int pd_slave;
1881
1882 id = index & mpt_mask(dev);
1883 err = mr_res_start_move_to(dev, slave, id, RES_MPT_HW, &mpt);
1884 if (err)
1885 return err;
1886
1887 /* Disable memory windows for VFs. */
1888 if (!mr_is_region(inbox->buf)) {
1889 err = -EPERM;
1890 goto ex_abort;
1891 }
1892
1893 /* Make sure that the PD bits related to the slave id are zeros. */
1894 pd = mr_get_pd(inbox->buf);
1895 pd_slave = (pd >> 17) & 0x7f;
1896 if (pd_slave != 0 && pd_slave != slave) {
1897 err = -EPERM;
1898 goto ex_abort;
1899 }
1900
1901 if (mr_is_fmr(inbox->buf)) {
1902 /* FMR and Bind Enable are forbidden in slave devices. */
1903 if (mr_is_bind_enabled(inbox->buf)) {
1904 err = -EPERM;
1905 goto ex_abort;
1906 }
1907 /* FMR and Memory Windows are also forbidden. */
1908 if (!mr_is_region(inbox->buf)) {
1909 err = -EPERM;
1910 goto ex_abort;
1911 }
1912 }
1913
1914 phys = mr_phys_mpt(inbox->buf);
1915 if (!phys) {
1916 err = get_res(dev, slave, mtt_base, RES_MTT, &mtt);
1917 if (err)
1918 goto ex_abort;
1919
1920 err = check_mtt_range(dev, slave, mtt_base,
1921 mr_get_mtt_size(inbox->buf), mtt);
1922 if (err)
1923 goto ex_put;
1924
1925 mpt->mtt = mtt;
1926 }
1927
1928 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
1929 if (err)
1930 goto ex_put;
1931
1932 if (!phys) {
1933 atomic_inc(&mtt->ref_count);
1934 put_res(dev, slave, mtt->com.res_id, RES_MTT);
1935 }
1936
1937 res_end_move(dev, slave, RES_MPT, id);
1938 return 0;
1939
1940 ex_put:
1941 if (!phys)
1942 put_res(dev, slave, mtt->com.res_id, RES_MTT);
1943 ex_abort:
1944 res_abort_move(dev, slave, RES_MPT, id);
1945
1946 return err;
1947 }
1948
1949 int mlx4_HW2SW_MPT_wrapper(struct mlx4_dev *dev, int slave,
1950 struct mlx4_vhcr *vhcr,
1951 struct mlx4_cmd_mailbox *inbox,
1952 struct mlx4_cmd_mailbox *outbox,
1953 struct mlx4_cmd_info *cmd)
1954 {
1955 int err;
1956 int index = vhcr->in_modifier;
1957 struct res_mpt *mpt;
1958 int id;
1959
1960 id = index & mpt_mask(dev);
1961 err = mr_res_start_move_to(dev, slave, id, RES_MPT_MAPPED, &mpt);
1962 if (err)
1963 return err;
1964
1965 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
1966 if (err)
1967 goto ex_abort;
1968
1969 if (mpt->mtt)
1970 atomic_dec(&mpt->mtt->ref_count);
1971
1972 res_end_move(dev, slave, RES_MPT, id);
1973 return 0;
1974
1975 ex_abort:
1976 res_abort_move(dev, slave, RES_MPT, id);
1977
1978 return err;
1979 }
1980
1981 int mlx4_QUERY_MPT_wrapper(struct mlx4_dev *dev, int slave,
1982 struct mlx4_vhcr *vhcr,
1983 struct mlx4_cmd_mailbox *inbox,
1984 struct mlx4_cmd_mailbox *outbox,
1985 struct mlx4_cmd_info *cmd)
1986 {
1987 int err;
1988 int index = vhcr->in_modifier;
1989 struct res_mpt *mpt;
1990 int id;
1991
1992 id = index & mpt_mask(dev);
1993 err = get_res(dev, slave, id, RES_MPT, &mpt);
1994 if (err)
1995 return err;
1996
1997 if (mpt->com.from_state != RES_MPT_HW) {
1998 err = -EBUSY;
1999 goto out;
2000 }
2001
2002 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2003
2004 out:
2005 put_res(dev, slave, id, RES_MPT);
2006 return err;
2007 }
2008
2009 static int qp_get_rcqn(struct mlx4_qp_context *qpc)
2010 {
2011 return be32_to_cpu(qpc->cqn_recv) & 0xffffff;
2012 }
2013
2014 static int qp_get_scqn(struct mlx4_qp_context *qpc)
2015 {
2016 return be32_to_cpu(qpc->cqn_send) & 0xffffff;
2017 }
2018
2019 static u32 qp_get_srqn(struct mlx4_qp_context *qpc)
2020 {
2021 return be32_to_cpu(qpc->srqn) & 0x1ffffff;
2022 }
2023
2024 static void adjust_proxy_tun_qkey(struct mlx4_dev *dev, struct mlx4_vhcr *vhcr,
2025 struct mlx4_qp_context *context)
2026 {
2027 u32 qpn = vhcr->in_modifier & 0xffffff;
2028 u32 qkey = 0;
2029
2030 if (mlx4_get_parav_qkey(dev, qpn, &qkey))
2031 return;
2032
2033 /* adjust qkey in qp context */
2034 context->qkey = cpu_to_be32(qkey);
2035 }
2036
2037 int mlx4_RST2INIT_QP_wrapper(struct mlx4_dev *dev, int slave,
2038 struct mlx4_vhcr *vhcr,
2039 struct mlx4_cmd_mailbox *inbox,
2040 struct mlx4_cmd_mailbox *outbox,
2041 struct mlx4_cmd_info *cmd)
2042 {
2043 int err;
2044 int qpn = vhcr->in_modifier & 0x7fffff;
2045 struct res_mtt *mtt;
2046 struct res_qp *qp;
2047 struct mlx4_qp_context *qpc = inbox->buf + 8;
2048 int mtt_base = qp_get_mtt_addr(qpc) / dev->caps.mtt_entry_sz;
2049 int mtt_size = qp_get_mtt_size(qpc);
2050 struct res_cq *rcq;
2051 struct res_cq *scq;
2052 int rcqn = qp_get_rcqn(qpc);
2053 int scqn = qp_get_scqn(qpc);
2054 u32 srqn = qp_get_srqn(qpc) & 0xffffff;
2055 int use_srq = (qp_get_srqn(qpc) >> 24) & 1;
2056 struct res_srq *srq;
2057 int local_qpn = be32_to_cpu(qpc->local_qpn) & 0xffffff;
2058
2059 err = qp_res_start_move_to(dev, slave, qpn, RES_QP_HW, &qp, 0);
2060 if (err)
2061 return err;
2062 qp->local_qpn = local_qpn;
2063
2064 err = get_res(dev, slave, mtt_base, RES_MTT, &mtt);
2065 if (err)
2066 goto ex_abort;
2067
2068 err = check_mtt_range(dev, slave, mtt_base, mtt_size, mtt);
2069 if (err)
2070 goto ex_put_mtt;
2071
2072 err = get_res(dev, slave, rcqn, RES_CQ, &rcq);
2073 if (err)
2074 goto ex_put_mtt;
2075
2076 if (scqn != rcqn) {
2077 err = get_res(dev, slave, scqn, RES_CQ, &scq);
2078 if (err)
2079 goto ex_put_rcq;
2080 } else
2081 scq = rcq;
2082
2083 if (use_srq) {
2084 err = get_res(dev, slave, srqn, RES_SRQ, &srq);
2085 if (err)
2086 goto ex_put_scq;
2087 }
2088
2089 adjust_proxy_tun_qkey(dev, vhcr, qpc);
2090 update_pkey_index(dev, slave, inbox);
2091 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2092 if (err)
2093 goto ex_put_srq;
2094 atomic_inc(&mtt->ref_count);
2095 qp->mtt = mtt;
2096 atomic_inc(&rcq->ref_count);
2097 qp->rcq = rcq;
2098 atomic_inc(&scq->ref_count);
2099 qp->scq = scq;
2100
2101 if (scqn != rcqn)
2102 put_res(dev, slave, scqn, RES_CQ);
2103
2104 if (use_srq) {
2105 atomic_inc(&srq->ref_count);
2106 put_res(dev, slave, srqn, RES_SRQ);
2107 qp->srq = srq;
2108 }
2109 put_res(dev, slave, rcqn, RES_CQ);
2110 put_res(dev, slave, mtt_base, RES_MTT);
2111 res_end_move(dev, slave, RES_QP, qpn);
2112
2113 return 0;
2114
2115 ex_put_srq:
2116 if (use_srq)
2117 put_res(dev, slave, srqn, RES_SRQ);
2118 ex_put_scq:
2119 if (scqn != rcqn)
2120 put_res(dev, slave, scqn, RES_CQ);
2121 ex_put_rcq:
2122 put_res(dev, slave, rcqn, RES_CQ);
2123 ex_put_mtt:
2124 put_res(dev, slave, mtt_base, RES_MTT);
2125 ex_abort:
2126 res_abort_move(dev, slave, RES_QP, qpn);
2127
2128 return err;
2129 }
2130
2131 static int eq_get_mtt_addr(struct mlx4_eq_context *eqc)
2132 {
2133 return be32_to_cpu(eqc->mtt_base_addr_l) & 0xfffffff8;
2134 }
2135
2136 static int eq_get_mtt_size(struct mlx4_eq_context *eqc)
2137 {
2138 int log_eq_size = eqc->log_eq_size & 0x1f;
2139 int page_shift = (eqc->log_page_size & 0x3f) + 12;
2140
2141 if (log_eq_size + 5 < page_shift)
2142 return 1;
2143
2144 return 1 << (log_eq_size + 5 - page_shift);
2145 }
2146
2147 static int cq_get_mtt_addr(struct mlx4_cq_context *cqc)
2148 {
2149 return be32_to_cpu(cqc->mtt_base_addr_l) & 0xfffffff8;
2150 }
2151
2152 static int cq_get_mtt_size(struct mlx4_cq_context *cqc)
2153 {
2154 int log_cq_size = (be32_to_cpu(cqc->logsize_usrpage) >> 24) & 0x1f;
2155 int page_shift = (cqc->log_page_size & 0x3f) + 12;
2156
2157 if (log_cq_size + 5 < page_shift)
2158 return 1;
2159
2160 return 1 << (log_cq_size + 5 - page_shift);
2161 }
2162
2163 int mlx4_SW2HW_EQ_wrapper(struct mlx4_dev *dev, int slave,
2164 struct mlx4_vhcr *vhcr,
2165 struct mlx4_cmd_mailbox *inbox,
2166 struct mlx4_cmd_mailbox *outbox,
2167 struct mlx4_cmd_info *cmd)
2168 {
2169 int err;
2170 int eqn = vhcr->in_modifier;
2171 int res_id = (slave << 8) | eqn;
2172 struct mlx4_eq_context *eqc = inbox->buf;
2173 int mtt_base = eq_get_mtt_addr(eqc) / dev->caps.mtt_entry_sz;
2174 int mtt_size = eq_get_mtt_size(eqc);
2175 struct res_eq *eq;
2176 struct res_mtt *mtt;
2177
2178 err = add_res_range(dev, slave, res_id, 1, RES_EQ, 0);
2179 if (err)
2180 return err;
2181 err = eq_res_start_move_to(dev, slave, res_id, RES_EQ_HW, &eq);
2182 if (err)
2183 goto out_add;
2184
2185 err = get_res(dev, slave, mtt_base, RES_MTT, &mtt);
2186 if (err)
2187 goto out_move;
2188
2189 err = check_mtt_range(dev, slave, mtt_base, mtt_size, mtt);
2190 if (err)
2191 goto out_put;
2192
2193 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2194 if (err)
2195 goto out_put;
2196
2197 atomic_inc(&mtt->ref_count);
2198 eq->mtt = mtt;
2199 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2200 res_end_move(dev, slave, RES_EQ, res_id);
2201 return 0;
2202
2203 out_put:
2204 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2205 out_move:
2206 res_abort_move(dev, slave, RES_EQ, res_id);
2207 out_add:
2208 rem_res_range(dev, slave, res_id, 1, RES_EQ, 0);
2209 return err;
2210 }
2211
2212 static int get_containing_mtt(struct mlx4_dev *dev, int slave, int start,
2213 int len, struct res_mtt **res)
2214 {
2215 struct mlx4_priv *priv = mlx4_priv(dev);
2216 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
2217 struct res_mtt *mtt;
2218 int err = -EINVAL;
2219
2220 spin_lock_irq(mlx4_tlock(dev));
2221 list_for_each_entry(mtt, &tracker->slave_list[slave].res_list[RES_MTT],
2222 com.list) {
2223 if (!check_mtt_range(dev, slave, start, len, mtt)) {
2224 *res = mtt;
2225 mtt->com.from_state = mtt->com.state;
2226 mtt->com.state = RES_MTT_BUSY;
2227 err = 0;
2228 break;
2229 }
2230 }
2231 spin_unlock_irq(mlx4_tlock(dev));
2232
2233 return err;
2234 }
2235
2236 static int verify_qp_parameters(struct mlx4_dev *dev,
2237 struct mlx4_cmd_mailbox *inbox,
2238 enum qp_transition transition, u8 slave)
2239 {
2240 u32 qp_type;
2241 struct mlx4_qp_context *qp_ctx;
2242 enum mlx4_qp_optpar optpar;
2243
2244 qp_ctx = inbox->buf + 8;
2245 qp_type = (be32_to_cpu(qp_ctx->flags) >> 16) & 0xff;
2246 optpar = be32_to_cpu(*(__be32 *) inbox->buf);
2247
2248 switch (qp_type) {
2249 case MLX4_QP_ST_RC:
2250 case MLX4_QP_ST_UC:
2251 switch (transition) {
2252 case QP_TRANS_INIT2RTR:
2253 case QP_TRANS_RTR2RTS:
2254 case QP_TRANS_RTS2RTS:
2255 case QP_TRANS_SQD2SQD:
2256 case QP_TRANS_SQD2RTS:
2257 if (slave != mlx4_master_func_num(dev))
2258 /* slaves have only gid index 0 */
2259 if (optpar & MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH)
2260 if (qp_ctx->pri_path.mgid_index)
2261 return -EINVAL;
2262 if (optpar & MLX4_QP_OPTPAR_ALT_ADDR_PATH)
2263 if (qp_ctx->alt_path.mgid_index)
2264 return -EINVAL;
2265 break;
2266 default:
2267 break;
2268 }
2269
2270 break;
2271 default:
2272 break;
2273 }
2274
2275 return 0;
2276 }
2277
2278 int mlx4_WRITE_MTT_wrapper(struct mlx4_dev *dev, int slave,
2279 struct mlx4_vhcr *vhcr,
2280 struct mlx4_cmd_mailbox *inbox,
2281 struct mlx4_cmd_mailbox *outbox,
2282 struct mlx4_cmd_info *cmd)
2283 {
2284 struct mlx4_mtt mtt;
2285 __be64 *page_list = inbox->buf;
2286 u64 *pg_list = (u64 *)page_list;
2287 int i;
2288 struct res_mtt *rmtt = NULL;
2289 int start = be64_to_cpu(page_list[0]);
2290 int npages = vhcr->in_modifier;
2291 int err;
2292
2293 err = get_containing_mtt(dev, slave, start, npages, &rmtt);
2294 if (err)
2295 return err;
2296
2297 /* Call the SW implementation of write_mtt:
2298 * - Prepare a dummy mtt struct
2299 * - Translate inbox contents to simple addresses in host endianess */
2300 mtt.offset = 0; /* TBD this is broken but I don't handle it since
2301 we don't really use it */
2302 mtt.order = 0;
2303 mtt.page_shift = 0;
2304 for (i = 0; i < npages; ++i)
2305 pg_list[i + 2] = (be64_to_cpu(page_list[i + 2]) & ~1ULL);
2306
2307 err = __mlx4_write_mtt(dev, &mtt, be64_to_cpu(page_list[0]), npages,
2308 ((u64 *)page_list + 2));
2309
2310 if (rmtt)
2311 put_res(dev, slave, rmtt->com.res_id, RES_MTT);
2312
2313 return err;
2314 }
2315
2316 int mlx4_HW2SW_EQ_wrapper(struct mlx4_dev *dev, int slave,
2317 struct mlx4_vhcr *vhcr,
2318 struct mlx4_cmd_mailbox *inbox,
2319 struct mlx4_cmd_mailbox *outbox,
2320 struct mlx4_cmd_info *cmd)
2321 {
2322 int eqn = vhcr->in_modifier;
2323 int res_id = eqn | (slave << 8);
2324 struct res_eq *eq;
2325 int err;
2326
2327 err = eq_res_start_move_to(dev, slave, res_id, RES_EQ_RESERVED, &eq);
2328 if (err)
2329 return err;
2330
2331 err = get_res(dev, slave, eq->mtt->com.res_id, RES_MTT, NULL);
2332 if (err)
2333 goto ex_abort;
2334
2335 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2336 if (err)
2337 goto ex_put;
2338
2339 atomic_dec(&eq->mtt->ref_count);
2340 put_res(dev, slave, eq->mtt->com.res_id, RES_MTT);
2341 res_end_move(dev, slave, RES_EQ, res_id);
2342 rem_res_range(dev, slave, res_id, 1, RES_EQ, 0);
2343
2344 return 0;
2345
2346 ex_put:
2347 put_res(dev, slave, eq->mtt->com.res_id, RES_MTT);
2348 ex_abort:
2349 res_abort_move(dev, slave, RES_EQ, res_id);
2350
2351 return err;
2352 }
2353
2354 int mlx4_GEN_EQE(struct mlx4_dev *dev, int slave, struct mlx4_eqe *eqe)
2355 {
2356 struct mlx4_priv *priv = mlx4_priv(dev);
2357 struct mlx4_slave_event_eq_info *event_eq;
2358 struct mlx4_cmd_mailbox *mailbox;
2359 u32 in_modifier = 0;
2360 int err;
2361 int res_id;
2362 struct res_eq *req;
2363
2364 if (!priv->mfunc.master.slave_state)
2365 return -EINVAL;
2366
2367 event_eq = &priv->mfunc.master.slave_state[slave].event_eq[eqe->type];
2368
2369 /* Create the event only if the slave is registered */
2370 if (event_eq->eqn < 0)
2371 return 0;
2372
2373 mutex_lock(&priv->mfunc.master.gen_eqe_mutex[slave]);
2374 res_id = (slave << 8) | event_eq->eqn;
2375 err = get_res(dev, slave, res_id, RES_EQ, &req);
2376 if (err)
2377 goto unlock;
2378
2379 if (req->com.from_state != RES_EQ_HW) {
2380 err = -EINVAL;
2381 goto put;
2382 }
2383
2384 mailbox = mlx4_alloc_cmd_mailbox(dev);
2385 if (IS_ERR(mailbox)) {
2386 err = PTR_ERR(mailbox);
2387 goto put;
2388 }
2389
2390 if (eqe->type == MLX4_EVENT_TYPE_CMD) {
2391 ++event_eq->token;
2392 eqe->event.cmd.token = cpu_to_be16(event_eq->token);
2393 }
2394
2395 memcpy(mailbox->buf, (u8 *) eqe, 28);
2396
2397 in_modifier = (slave & 0xff) | ((event_eq->eqn & 0xff) << 16);
2398
2399 err = mlx4_cmd(dev, mailbox->dma, in_modifier, 0,
2400 MLX4_CMD_GEN_EQE, MLX4_CMD_TIME_CLASS_B,
2401 MLX4_CMD_NATIVE);
2402
2403 put_res(dev, slave, res_id, RES_EQ);
2404 mutex_unlock(&priv->mfunc.master.gen_eqe_mutex[slave]);
2405 mlx4_free_cmd_mailbox(dev, mailbox);
2406 return err;
2407
2408 put:
2409 put_res(dev, slave, res_id, RES_EQ);
2410
2411 unlock:
2412 mutex_unlock(&priv->mfunc.master.gen_eqe_mutex[slave]);
2413 return err;
2414 }
2415
2416 int mlx4_QUERY_EQ_wrapper(struct mlx4_dev *dev, int slave,
2417 struct mlx4_vhcr *vhcr,
2418 struct mlx4_cmd_mailbox *inbox,
2419 struct mlx4_cmd_mailbox *outbox,
2420 struct mlx4_cmd_info *cmd)
2421 {
2422 int eqn = vhcr->in_modifier;
2423 int res_id = eqn | (slave << 8);
2424 struct res_eq *eq;
2425 int err;
2426
2427 err = get_res(dev, slave, res_id, RES_EQ, &eq);
2428 if (err)
2429 return err;
2430
2431 if (eq->com.from_state != RES_EQ_HW) {
2432 err = -EINVAL;
2433 goto ex_put;
2434 }
2435
2436 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2437
2438 ex_put:
2439 put_res(dev, slave, res_id, RES_EQ);
2440 return err;
2441 }
2442
2443 int mlx4_SW2HW_CQ_wrapper(struct mlx4_dev *dev, int slave,
2444 struct mlx4_vhcr *vhcr,
2445 struct mlx4_cmd_mailbox *inbox,
2446 struct mlx4_cmd_mailbox *outbox,
2447 struct mlx4_cmd_info *cmd)
2448 {
2449 int err;
2450 int cqn = vhcr->in_modifier;
2451 struct mlx4_cq_context *cqc = inbox->buf;
2452 int mtt_base = cq_get_mtt_addr(cqc) / dev->caps.mtt_entry_sz;
2453 struct res_cq *cq;
2454 struct res_mtt *mtt;
2455
2456 err = cq_res_start_move_to(dev, slave, cqn, RES_CQ_HW, &cq);
2457 if (err)
2458 return err;
2459 err = get_res(dev, slave, mtt_base, RES_MTT, &mtt);
2460 if (err)
2461 goto out_move;
2462 err = check_mtt_range(dev, slave, mtt_base, cq_get_mtt_size(cqc), mtt);
2463 if (err)
2464 goto out_put;
2465 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2466 if (err)
2467 goto out_put;
2468 atomic_inc(&mtt->ref_count);
2469 cq->mtt = mtt;
2470 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2471 res_end_move(dev, slave, RES_CQ, cqn);
2472 return 0;
2473
2474 out_put:
2475 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2476 out_move:
2477 res_abort_move(dev, slave, RES_CQ, cqn);
2478 return err;
2479 }
2480
2481 int mlx4_HW2SW_CQ_wrapper(struct mlx4_dev *dev, int slave,
2482 struct mlx4_vhcr *vhcr,
2483 struct mlx4_cmd_mailbox *inbox,
2484 struct mlx4_cmd_mailbox *outbox,
2485 struct mlx4_cmd_info *cmd)
2486 {
2487 int err;
2488 int cqn = vhcr->in_modifier;
2489 struct res_cq *cq;
2490
2491 err = cq_res_start_move_to(dev, slave, cqn, RES_CQ_ALLOCATED, &cq);
2492 if (err)
2493 return err;
2494 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2495 if (err)
2496 goto out_move;
2497 atomic_dec(&cq->mtt->ref_count);
2498 res_end_move(dev, slave, RES_CQ, cqn);
2499 return 0;
2500
2501 out_move:
2502 res_abort_move(dev, slave, RES_CQ, cqn);
2503 return err;
2504 }
2505
2506 int mlx4_QUERY_CQ_wrapper(struct mlx4_dev *dev, int slave,
2507 struct mlx4_vhcr *vhcr,
2508 struct mlx4_cmd_mailbox *inbox,
2509 struct mlx4_cmd_mailbox *outbox,
2510 struct mlx4_cmd_info *cmd)
2511 {
2512 int cqn = vhcr->in_modifier;
2513 struct res_cq *cq;
2514 int err;
2515
2516 err = get_res(dev, slave, cqn, RES_CQ, &cq);
2517 if (err)
2518 return err;
2519
2520 if (cq->com.from_state != RES_CQ_HW)
2521 goto ex_put;
2522
2523 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2524 ex_put:
2525 put_res(dev, slave, cqn, RES_CQ);
2526
2527 return err;
2528 }
2529
2530 static int handle_resize(struct mlx4_dev *dev, int slave,
2531 struct mlx4_vhcr *vhcr,
2532 struct mlx4_cmd_mailbox *inbox,
2533 struct mlx4_cmd_mailbox *outbox,
2534 struct mlx4_cmd_info *cmd,
2535 struct res_cq *cq)
2536 {
2537 int err;
2538 struct res_mtt *orig_mtt;
2539 struct res_mtt *mtt;
2540 struct mlx4_cq_context *cqc = inbox->buf;
2541 int mtt_base = cq_get_mtt_addr(cqc) / dev->caps.mtt_entry_sz;
2542
2543 err = get_res(dev, slave, cq->mtt->com.res_id, RES_MTT, &orig_mtt);
2544 if (err)
2545 return err;
2546
2547 if (orig_mtt != cq->mtt) {
2548 err = -EINVAL;
2549 goto ex_put;
2550 }
2551
2552 err = get_res(dev, slave, mtt_base, RES_MTT, &mtt);
2553 if (err)
2554 goto ex_put;
2555
2556 err = check_mtt_range(dev, slave, mtt_base, cq_get_mtt_size(cqc), mtt);
2557 if (err)
2558 goto ex_put1;
2559 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2560 if (err)
2561 goto ex_put1;
2562 atomic_dec(&orig_mtt->ref_count);
2563 put_res(dev, slave, orig_mtt->com.res_id, RES_MTT);
2564 atomic_inc(&mtt->ref_count);
2565 cq->mtt = mtt;
2566 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2567 return 0;
2568
2569 ex_put1:
2570 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2571 ex_put:
2572 put_res(dev, slave, orig_mtt->com.res_id, RES_MTT);
2573
2574 return err;
2575
2576 }
2577
2578 int mlx4_MODIFY_CQ_wrapper(struct mlx4_dev *dev, int slave,
2579 struct mlx4_vhcr *vhcr,
2580 struct mlx4_cmd_mailbox *inbox,
2581 struct mlx4_cmd_mailbox *outbox,
2582 struct mlx4_cmd_info *cmd)
2583 {
2584 int cqn = vhcr->in_modifier;
2585 struct res_cq *cq;
2586 int err;
2587
2588 err = get_res(dev, slave, cqn, RES_CQ, &cq);
2589 if (err)
2590 return err;
2591
2592 if (cq->com.from_state != RES_CQ_HW)
2593 goto ex_put;
2594
2595 if (vhcr->op_modifier == 0) {
2596 err = handle_resize(dev, slave, vhcr, inbox, outbox, cmd, cq);
2597 goto ex_put;
2598 }
2599
2600 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2601 ex_put:
2602 put_res(dev, slave, cqn, RES_CQ);
2603
2604 return err;
2605 }
2606
2607 static int srq_get_mtt_size(struct mlx4_srq_context *srqc)
2608 {
2609 int log_srq_size = (be32_to_cpu(srqc->state_logsize_srqn) >> 24) & 0xf;
2610 int log_rq_stride = srqc->logstride & 7;
2611 int page_shift = (srqc->log_page_size & 0x3f) + 12;
2612
2613 if (log_srq_size + log_rq_stride + 4 < page_shift)
2614 return 1;
2615
2616 return 1 << (log_srq_size + log_rq_stride + 4 - page_shift);
2617 }
2618
2619 int mlx4_SW2HW_SRQ_wrapper(struct mlx4_dev *dev, int slave,
2620 struct mlx4_vhcr *vhcr,
2621 struct mlx4_cmd_mailbox *inbox,
2622 struct mlx4_cmd_mailbox *outbox,
2623 struct mlx4_cmd_info *cmd)
2624 {
2625 int err;
2626 int srqn = vhcr->in_modifier;
2627 struct res_mtt *mtt;
2628 struct res_srq *srq;
2629 struct mlx4_srq_context *srqc = inbox->buf;
2630 int mtt_base = srq_get_mtt_addr(srqc) / dev->caps.mtt_entry_sz;
2631
2632 if (srqn != (be32_to_cpu(srqc->state_logsize_srqn) & 0xffffff))
2633 return -EINVAL;
2634
2635 err = srq_res_start_move_to(dev, slave, srqn, RES_SRQ_HW, &srq);
2636 if (err)
2637 return err;
2638 err = get_res(dev, slave, mtt_base, RES_MTT, &mtt);
2639 if (err)
2640 goto ex_abort;
2641 err = check_mtt_range(dev, slave, mtt_base, srq_get_mtt_size(srqc),
2642 mtt);
2643 if (err)
2644 goto ex_put_mtt;
2645
2646 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2647 if (err)
2648 goto ex_put_mtt;
2649
2650 atomic_inc(&mtt->ref_count);
2651 srq->mtt = mtt;
2652 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2653 res_end_move(dev, slave, RES_SRQ, srqn);
2654 return 0;
2655
2656 ex_put_mtt:
2657 put_res(dev, slave, mtt->com.res_id, RES_MTT);
2658 ex_abort:
2659 res_abort_move(dev, slave, RES_SRQ, srqn);
2660
2661 return err;
2662 }
2663
2664 int mlx4_HW2SW_SRQ_wrapper(struct mlx4_dev *dev, int slave,
2665 struct mlx4_vhcr *vhcr,
2666 struct mlx4_cmd_mailbox *inbox,
2667 struct mlx4_cmd_mailbox *outbox,
2668 struct mlx4_cmd_info *cmd)
2669 {
2670 int err;
2671 int srqn = vhcr->in_modifier;
2672 struct res_srq *srq;
2673
2674 err = srq_res_start_move_to(dev, slave, srqn, RES_SRQ_ALLOCATED, &srq);
2675 if (err)
2676 return err;
2677 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2678 if (err)
2679 goto ex_abort;
2680 atomic_dec(&srq->mtt->ref_count);
2681 if (srq->cq)
2682 atomic_dec(&srq->cq->ref_count);
2683 res_end_move(dev, slave, RES_SRQ, srqn);
2684
2685 return 0;
2686
2687 ex_abort:
2688 res_abort_move(dev, slave, RES_SRQ, srqn);
2689
2690 return err;
2691 }
2692
2693 int mlx4_QUERY_SRQ_wrapper(struct mlx4_dev *dev, int slave,
2694 struct mlx4_vhcr *vhcr,
2695 struct mlx4_cmd_mailbox *inbox,
2696 struct mlx4_cmd_mailbox *outbox,
2697 struct mlx4_cmd_info *cmd)
2698 {
2699 int err;
2700 int srqn = vhcr->in_modifier;
2701 struct res_srq *srq;
2702
2703 err = get_res(dev, slave, srqn, RES_SRQ, &srq);
2704 if (err)
2705 return err;
2706 if (srq->com.from_state != RES_SRQ_HW) {
2707 err = -EBUSY;
2708 goto out;
2709 }
2710 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2711 out:
2712 put_res(dev, slave, srqn, RES_SRQ);
2713 return err;
2714 }
2715
2716 int mlx4_ARM_SRQ_wrapper(struct mlx4_dev *dev, int slave,
2717 struct mlx4_vhcr *vhcr,
2718 struct mlx4_cmd_mailbox *inbox,
2719 struct mlx4_cmd_mailbox *outbox,
2720 struct mlx4_cmd_info *cmd)
2721 {
2722 int err;
2723 int srqn = vhcr->in_modifier;
2724 struct res_srq *srq;
2725
2726 err = get_res(dev, slave, srqn, RES_SRQ, &srq);
2727 if (err)
2728 return err;
2729
2730 if (srq->com.from_state != RES_SRQ_HW) {
2731 err = -EBUSY;
2732 goto out;
2733 }
2734
2735 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2736 out:
2737 put_res(dev, slave, srqn, RES_SRQ);
2738 return err;
2739 }
2740
2741 int mlx4_GEN_QP_wrapper(struct mlx4_dev *dev, int slave,
2742 struct mlx4_vhcr *vhcr,
2743 struct mlx4_cmd_mailbox *inbox,
2744 struct mlx4_cmd_mailbox *outbox,
2745 struct mlx4_cmd_info *cmd)
2746 {
2747 int err;
2748 int qpn = vhcr->in_modifier & 0x7fffff;
2749 struct res_qp *qp;
2750
2751 err = get_res(dev, slave, qpn, RES_QP, &qp);
2752 if (err)
2753 return err;
2754 if (qp->com.from_state != RES_QP_HW) {
2755 err = -EBUSY;
2756 goto out;
2757 }
2758
2759 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2760 out:
2761 put_res(dev, slave, qpn, RES_QP);
2762 return err;
2763 }
2764
2765 int mlx4_INIT2INIT_QP_wrapper(struct mlx4_dev *dev, int slave,
2766 struct mlx4_vhcr *vhcr,
2767 struct mlx4_cmd_mailbox *inbox,
2768 struct mlx4_cmd_mailbox *outbox,
2769 struct mlx4_cmd_info *cmd)
2770 {
2771 struct mlx4_qp_context *context = inbox->buf + 8;
2772 adjust_proxy_tun_qkey(dev, vhcr, context);
2773 update_pkey_index(dev, slave, inbox);
2774 return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2775 }
2776
2777 int mlx4_INIT2RTR_QP_wrapper(struct mlx4_dev *dev, int slave,
2778 struct mlx4_vhcr *vhcr,
2779 struct mlx4_cmd_mailbox *inbox,
2780 struct mlx4_cmd_mailbox *outbox,
2781 struct mlx4_cmd_info *cmd)
2782 {
2783 int err;
2784 struct mlx4_qp_context *qpc = inbox->buf + 8;
2785
2786 err = verify_qp_parameters(dev, inbox, QP_TRANS_INIT2RTR, slave);
2787 if (err)
2788 return err;
2789
2790 update_pkey_index(dev, slave, inbox);
2791 update_gid(dev, inbox, (u8)slave);
2792 adjust_proxy_tun_qkey(dev, vhcr, qpc);
2793
2794 return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2795 }
2796
2797 int mlx4_RTR2RTS_QP_wrapper(struct mlx4_dev *dev, int slave,
2798 struct mlx4_vhcr *vhcr,
2799 struct mlx4_cmd_mailbox *inbox,
2800 struct mlx4_cmd_mailbox *outbox,
2801 struct mlx4_cmd_info *cmd)
2802 {
2803 int err;
2804 struct mlx4_qp_context *context = inbox->buf + 8;
2805
2806 err = verify_qp_parameters(dev, inbox, QP_TRANS_RTR2RTS, slave);
2807 if (err)
2808 return err;
2809
2810 update_pkey_index(dev, slave, inbox);
2811 update_gid(dev, inbox, (u8)slave);
2812 adjust_proxy_tun_qkey(dev, vhcr, context);
2813 return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2814 }
2815
2816 int mlx4_RTS2RTS_QP_wrapper(struct mlx4_dev *dev, int slave,
2817 struct mlx4_vhcr *vhcr,
2818 struct mlx4_cmd_mailbox *inbox,
2819 struct mlx4_cmd_mailbox *outbox,
2820 struct mlx4_cmd_info *cmd)
2821 {
2822 int err;
2823 struct mlx4_qp_context *context = inbox->buf + 8;
2824
2825 err = verify_qp_parameters(dev, inbox, QP_TRANS_RTS2RTS, slave);
2826 if (err)
2827 return err;
2828
2829 update_pkey_index(dev, slave, inbox);
2830 update_gid(dev, inbox, (u8)slave);
2831 adjust_proxy_tun_qkey(dev, vhcr, context);
2832 return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2833 }
2834
2835
2836 int mlx4_SQERR2RTS_QP_wrapper(struct mlx4_dev *dev, int slave,
2837 struct mlx4_vhcr *vhcr,
2838 struct mlx4_cmd_mailbox *inbox,
2839 struct mlx4_cmd_mailbox *outbox,
2840 struct mlx4_cmd_info *cmd)
2841 {
2842 struct mlx4_qp_context *context = inbox->buf + 8;
2843 adjust_proxy_tun_qkey(dev, vhcr, context);
2844 return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2845 }
2846
2847 int mlx4_SQD2SQD_QP_wrapper(struct mlx4_dev *dev, int slave,
2848 struct mlx4_vhcr *vhcr,
2849 struct mlx4_cmd_mailbox *inbox,
2850 struct mlx4_cmd_mailbox *outbox,
2851 struct mlx4_cmd_info *cmd)
2852 {
2853 int err;
2854 struct mlx4_qp_context *context = inbox->buf + 8;
2855
2856 err = verify_qp_parameters(dev, inbox, QP_TRANS_SQD2SQD, slave);
2857 if (err)
2858 return err;
2859
2860 adjust_proxy_tun_qkey(dev, vhcr, context);
2861 update_gid(dev, inbox, (u8)slave);
2862 update_pkey_index(dev, slave, inbox);
2863 return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2864 }
2865
2866 int mlx4_SQD2RTS_QP_wrapper(struct mlx4_dev *dev, int slave,
2867 struct mlx4_vhcr *vhcr,
2868 struct mlx4_cmd_mailbox *inbox,
2869 struct mlx4_cmd_mailbox *outbox,
2870 struct mlx4_cmd_info *cmd)
2871 {
2872 int err;
2873 struct mlx4_qp_context *context = inbox->buf + 8;
2874
2875 err = verify_qp_parameters(dev, inbox, QP_TRANS_SQD2RTS, slave);
2876 if (err)
2877 return err;
2878
2879 adjust_proxy_tun_qkey(dev, vhcr, context);
2880 update_gid(dev, inbox, (u8)slave);
2881 update_pkey_index(dev, slave, inbox);
2882 return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2883 }
2884
2885 int mlx4_2RST_QP_wrapper(struct mlx4_dev *dev, int slave,
2886 struct mlx4_vhcr *vhcr,
2887 struct mlx4_cmd_mailbox *inbox,
2888 struct mlx4_cmd_mailbox *outbox,
2889 struct mlx4_cmd_info *cmd)
2890 {
2891 int err;
2892 int qpn = vhcr->in_modifier & 0x7fffff;
2893 struct res_qp *qp;
2894
2895 err = qp_res_start_move_to(dev, slave, qpn, RES_QP_MAPPED, &qp, 0);
2896 if (err)
2897 return err;
2898 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
2899 if (err)
2900 goto ex_abort;
2901
2902 atomic_dec(&qp->mtt->ref_count);
2903 atomic_dec(&qp->rcq->ref_count);
2904 atomic_dec(&qp->scq->ref_count);
2905 if (qp->srq)
2906 atomic_dec(&qp->srq->ref_count);
2907 res_end_move(dev, slave, RES_QP, qpn);
2908 return 0;
2909
2910 ex_abort:
2911 res_abort_move(dev, slave, RES_QP, qpn);
2912
2913 return err;
2914 }
2915
2916 static struct res_gid *find_gid(struct mlx4_dev *dev, int slave,
2917 struct res_qp *rqp, u8 *gid)
2918 {
2919 struct res_gid *res;
2920
2921 list_for_each_entry(res, &rqp->mcg_list, list) {
2922 if (!memcmp(res->gid, gid, 16))
2923 return res;
2924 }
2925 return NULL;
2926 }
2927
2928 static int add_mcg_res(struct mlx4_dev *dev, int slave, struct res_qp *rqp,
2929 u8 *gid, enum mlx4_protocol prot,
2930 enum mlx4_steer_type steer)
2931 {
2932 struct res_gid *res;
2933 int err;
2934
2935 res = kzalloc(sizeof *res, GFP_KERNEL);
2936 if (!res)
2937 return -ENOMEM;
2938
2939 spin_lock_irq(&rqp->mcg_spl);
2940 if (find_gid(dev, slave, rqp, gid)) {
2941 kfree(res);
2942 err = -EEXIST;
2943 } else {
2944 memcpy(res->gid, gid, 16);
2945 res->prot = prot;
2946 res->steer = steer;
2947 list_add_tail(&res->list, &rqp->mcg_list);
2948 err = 0;
2949 }
2950 spin_unlock_irq(&rqp->mcg_spl);
2951
2952 return err;
2953 }
2954
2955 static int rem_mcg_res(struct mlx4_dev *dev, int slave, struct res_qp *rqp,
2956 u8 *gid, enum mlx4_protocol prot,
2957 enum mlx4_steer_type steer)
2958 {
2959 struct res_gid *res;
2960 int err;
2961
2962 spin_lock_irq(&rqp->mcg_spl);
2963 res = find_gid(dev, slave, rqp, gid);
2964 if (!res || res->prot != prot || res->steer != steer)
2965 err = -EINVAL;
2966 else {
2967 list_del(&res->list);
2968 kfree(res);
2969 err = 0;
2970 }
2971 spin_unlock_irq(&rqp->mcg_spl);
2972
2973 return err;
2974 }
2975
2976 int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
2977 struct mlx4_vhcr *vhcr,
2978 struct mlx4_cmd_mailbox *inbox,
2979 struct mlx4_cmd_mailbox *outbox,
2980 struct mlx4_cmd_info *cmd)
2981 {
2982 struct mlx4_qp qp; /* dummy for calling attach/detach */
2983 u8 *gid = inbox->buf;
2984 enum mlx4_protocol prot = (vhcr->in_modifier >> 28) & 0x7;
2985 int err;
2986 int qpn;
2987 struct res_qp *rqp;
2988 int attach = vhcr->op_modifier;
2989 int block_loopback = vhcr->in_modifier >> 31;
2990 u8 steer_type_mask = 2;
2991 enum mlx4_steer_type type = (gid[7] & steer_type_mask) >> 1;
2992
2993 if (dev->caps.steering_mode != MLX4_STEERING_MODE_B0)
2994 return -EINVAL;
2995
2996 qpn = vhcr->in_modifier & 0xffffff;
2997 err = get_res(dev, slave, qpn, RES_QP, &rqp);
2998 if (err)
2999 return err;
3000
3001 qp.qpn = qpn;
3002 if (attach) {
3003 err = add_mcg_res(dev, slave, rqp, gid, prot, type);
3004 if (err)
3005 goto ex_put;
3006
3007 err = mlx4_qp_attach_common(dev, &qp, gid,
3008 block_loopback, prot, type);
3009 if (err)
3010 goto ex_rem;
3011 } else {
3012 err = rem_mcg_res(dev, slave, rqp, gid, prot, type);
3013 if (err)
3014 goto ex_put;
3015 err = mlx4_qp_detach_common(dev, &qp, gid, prot, type);
3016 }
3017
3018 put_res(dev, slave, qpn, RES_QP);
3019 return 0;
3020
3021 ex_rem:
3022 /* ignore error return below, already in error */
3023 (void) rem_mcg_res(dev, slave, rqp, gid, prot, type);
3024 ex_put:
3025 put_res(dev, slave, qpn, RES_QP);
3026
3027 return err;
3028 }
3029
3030 /*
3031 * MAC validation for Flow Steering rules.
3032 * VF can attach rules only with a mac address which is assigned to it.
3033 */
3034 static int validate_eth_header_mac(int slave, struct _rule_hw *eth_header,
3035 struct list_head *rlist)
3036 {
3037 struct mac_res *res, *tmp;
3038 __be64 be_mac;
3039
3040 /* make sure it isn't multicast or broadcast mac*/
3041 if (!is_multicast_ether_addr(eth_header->eth.dst_mac) &&
3042 !is_broadcast_ether_addr(eth_header->eth.dst_mac)) {
3043 list_for_each_entry_safe(res, tmp, rlist, list) {
3044 be_mac = cpu_to_be64(res->mac << 16);
3045 if (!memcmp(&be_mac, eth_header->eth.dst_mac, ETH_ALEN))
3046 return 0;
3047 }
3048 pr_err("MAC %pM doesn't belong to VF %d, Steering rule rejected\n",
3049 eth_header->eth.dst_mac, slave);
3050 return -EINVAL;
3051 }
3052 return 0;
3053 }
3054
3055 /*
3056 * In case of missing eth header, append eth header with a MAC address
3057 * assigned to the VF.
3058 */
3059 static int add_eth_header(struct mlx4_dev *dev, int slave,
3060 struct mlx4_cmd_mailbox *inbox,
3061 struct list_head *rlist, int header_id)
3062 {
3063 struct mac_res *res, *tmp;
3064 u8 port;
3065 struct mlx4_net_trans_rule_hw_ctrl *ctrl;
3066 struct mlx4_net_trans_rule_hw_eth *eth_header;
3067 struct mlx4_net_trans_rule_hw_ipv4 *ip_header;
3068 struct mlx4_net_trans_rule_hw_tcp_udp *l4_header;
3069 __be64 be_mac = 0;
3070 __be64 mac_msk = cpu_to_be64(MLX4_MAC_MASK << 16);
3071
3072 ctrl = (struct mlx4_net_trans_rule_hw_ctrl *)inbox->buf;
3073 port = ctrl->port;
3074 eth_header = (struct mlx4_net_trans_rule_hw_eth *)(ctrl + 1);
3075
3076 /* Clear a space in the inbox for eth header */
3077 switch (header_id) {
3078 case MLX4_NET_TRANS_RULE_ID_IPV4:
3079 ip_header =
3080 (struct mlx4_net_trans_rule_hw_ipv4 *)(eth_header + 1);
3081 memmove(ip_header, eth_header,
3082 sizeof(*ip_header) + sizeof(*l4_header));
3083 break;
3084 case MLX4_NET_TRANS_RULE_ID_TCP:
3085 case MLX4_NET_TRANS_RULE_ID_UDP:
3086 l4_header = (struct mlx4_net_trans_rule_hw_tcp_udp *)
3087 (eth_header + 1);
3088 memmove(l4_header, eth_header, sizeof(*l4_header));
3089 break;
3090 default:
3091 return -EINVAL;
3092 }
3093 list_for_each_entry_safe(res, tmp, rlist, list) {
3094 if (port == res->port) {
3095 be_mac = cpu_to_be64(res->mac << 16);
3096 break;
3097 }
3098 }
3099 if (!be_mac) {
3100 pr_err("Failed adding eth header to FS rule, Can't find matching MAC for port %d .\n",
3101 port);
3102 return -EINVAL;
3103 }
3104
3105 memset(eth_header, 0, sizeof(*eth_header));
3106 eth_header->size = sizeof(*eth_header) >> 2;
3107 eth_header->id = cpu_to_be16(__sw_id_hw[MLX4_NET_TRANS_RULE_ID_ETH]);
3108 memcpy(eth_header->dst_mac, &be_mac, ETH_ALEN);
3109 memcpy(eth_header->dst_mac_msk, &mac_msk, ETH_ALEN);
3110
3111 return 0;
3112
3113 }
3114
3115 int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
3116 struct mlx4_vhcr *vhcr,
3117 struct mlx4_cmd_mailbox *inbox,
3118 struct mlx4_cmd_mailbox *outbox,
3119 struct mlx4_cmd_info *cmd)
3120 {
3121
3122 struct mlx4_priv *priv = mlx4_priv(dev);
3123 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3124 struct list_head *rlist = &tracker->slave_list[slave].res_list[RES_MAC];
3125 int err;
3126 int qpn;
3127 struct mlx4_net_trans_rule_hw_ctrl *ctrl;
3128 struct _rule_hw *rule_header;
3129 int header_id;
3130
3131 if (dev->caps.steering_mode !=
3132 MLX4_STEERING_MODE_DEVICE_MANAGED)
3133 return -EOPNOTSUPP;
3134
3135 ctrl = (struct mlx4_net_trans_rule_hw_ctrl *)inbox->buf;
3136 qpn = be32_to_cpu(ctrl->qpn) & 0xffffff;
3137 err = get_res(dev, slave, qpn, RES_QP, NULL);
3138 if (err) {
3139 pr_err("Steering rule with qpn 0x%x rejected.\n", qpn);
3140 return err;
3141 }
3142 rule_header = (struct _rule_hw *)(ctrl + 1);
3143 header_id = map_hw_to_sw_id(be16_to_cpu(rule_header->id));
3144
3145 switch (header_id) {
3146 case MLX4_NET_TRANS_RULE_ID_ETH:
3147 if (validate_eth_header_mac(slave, rule_header, rlist)) {
3148 err = -EINVAL;
3149 goto err_put;
3150 }
3151 break;
3152 case MLX4_NET_TRANS_RULE_ID_IB:
3153 break;
3154 case MLX4_NET_TRANS_RULE_ID_IPV4:
3155 case MLX4_NET_TRANS_RULE_ID_TCP:
3156 case MLX4_NET_TRANS_RULE_ID_UDP:
3157 pr_warn("Can't attach FS rule without L2 headers, adding L2 header.\n");
3158 if (add_eth_header(dev, slave, inbox, rlist, header_id)) {
3159 err = -EINVAL;
3160 goto err_put;
3161 }
3162 vhcr->in_modifier +=
3163 sizeof(struct mlx4_net_trans_rule_hw_eth) >> 2;
3164 break;
3165 default:
3166 pr_err("Corrupted mailbox.\n");
3167 err = -EINVAL;
3168 goto err_put;
3169 }
3170
3171 err = mlx4_cmd_imm(dev, inbox->dma, &vhcr->out_param,
3172 vhcr->in_modifier, 0,
3173 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
3174 MLX4_CMD_NATIVE);
3175 if (err)
3176 goto err_put;
3177
3178 err = add_res_range(dev, slave, vhcr->out_param, 1, RES_FS_RULE, 0);
3179 if (err) {
3180 mlx4_err(dev, "Fail to add flow steering resources.\n ");
3181 /* detach rule*/
3182 mlx4_cmd(dev, vhcr->out_param, 0, 0,
3183 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
3184 MLX4_CMD_NATIVE);
3185 }
3186 err_put:
3187 put_res(dev, slave, qpn, RES_QP);
3188 return err;
3189 }
3190
3191 int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave,
3192 struct mlx4_vhcr *vhcr,
3193 struct mlx4_cmd_mailbox *inbox,
3194 struct mlx4_cmd_mailbox *outbox,
3195 struct mlx4_cmd_info *cmd)
3196 {
3197 int err;
3198
3199 if (dev->caps.steering_mode !=
3200 MLX4_STEERING_MODE_DEVICE_MANAGED)
3201 return -EOPNOTSUPP;
3202
3203 err = rem_res_range(dev, slave, vhcr->in_param, 1, RES_FS_RULE, 0);
3204 if (err) {
3205 mlx4_err(dev, "Fail to remove flow steering resources.\n ");
3206 return err;
3207 }
3208
3209 err = mlx4_cmd(dev, vhcr->in_param, 0, 0,
3210 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
3211 MLX4_CMD_NATIVE);
3212 return err;
3213 }
3214
3215 enum {
3216 BUSY_MAX_RETRIES = 10
3217 };
3218
3219 int mlx4_QUERY_IF_STAT_wrapper(struct mlx4_dev *dev, int slave,
3220 struct mlx4_vhcr *vhcr,
3221 struct mlx4_cmd_mailbox *inbox,
3222 struct mlx4_cmd_mailbox *outbox,
3223 struct mlx4_cmd_info *cmd)
3224 {
3225 int err;
3226 int index = vhcr->in_modifier & 0xffff;
3227
3228 err = get_res(dev, slave, index, RES_COUNTER, NULL);
3229 if (err)
3230 return err;
3231
3232 err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
3233 put_res(dev, slave, index, RES_COUNTER);
3234 return err;
3235 }
3236
3237 static void detach_qp(struct mlx4_dev *dev, int slave, struct res_qp *rqp)
3238 {
3239 struct res_gid *rgid;
3240 struct res_gid *tmp;
3241 struct mlx4_qp qp; /* dummy for calling attach/detach */
3242
3243 list_for_each_entry_safe(rgid, tmp, &rqp->mcg_list, list) {
3244 qp.qpn = rqp->local_qpn;
3245 (void) mlx4_qp_detach_common(dev, &qp, rgid->gid, rgid->prot,
3246 rgid->steer);
3247 list_del(&rgid->list);
3248 kfree(rgid);
3249 }
3250 }
3251
3252 static int _move_all_busy(struct mlx4_dev *dev, int slave,
3253 enum mlx4_resource type, int print)
3254 {
3255 struct mlx4_priv *priv = mlx4_priv(dev);
3256 struct mlx4_resource_tracker *tracker =
3257 &priv->mfunc.master.res_tracker;
3258 struct list_head *rlist = &tracker->slave_list[slave].res_list[type];
3259 struct res_common *r;
3260 struct res_common *tmp;
3261 int busy;
3262
3263 busy = 0;
3264 spin_lock_irq(mlx4_tlock(dev));
3265 list_for_each_entry_safe(r, tmp, rlist, list) {
3266 if (r->owner == slave) {
3267 if (!r->removing) {
3268 if (r->state == RES_ANY_BUSY) {
3269 if (print)
3270 mlx4_dbg(dev,
3271 "%s id 0x%llx is busy\n",
3272 ResourceType(type),
3273 r->res_id);
3274 ++busy;
3275 } else {
3276 r->from_state = r->state;
3277 r->state = RES_ANY_BUSY;
3278 r->removing = 1;
3279 }
3280 }
3281 }
3282 }
3283 spin_unlock_irq(mlx4_tlock(dev));
3284
3285 return busy;
3286 }
3287
3288 static int move_all_busy(struct mlx4_dev *dev, int slave,
3289 enum mlx4_resource type)
3290 {
3291 unsigned long begin;
3292 int busy;
3293
3294 begin = jiffies;
3295 do {
3296 busy = _move_all_busy(dev, slave, type, 0);
3297 if (time_after(jiffies, begin + 5 * HZ))
3298 break;
3299 if (busy)
3300 cond_resched();
3301 } while (busy);
3302
3303 if (busy)
3304 busy = _move_all_busy(dev, slave, type, 1);
3305
3306 return busy;
3307 }
3308 static void rem_slave_qps(struct mlx4_dev *dev, int slave)
3309 {
3310 struct mlx4_priv *priv = mlx4_priv(dev);
3311 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3312 struct list_head *qp_list =
3313 &tracker->slave_list[slave].res_list[RES_QP];
3314 struct res_qp *qp;
3315 struct res_qp *tmp;
3316 int state;
3317 u64 in_param;
3318 int qpn;
3319 int err;
3320
3321 err = move_all_busy(dev, slave, RES_QP);
3322 if (err)
3323 mlx4_warn(dev, "rem_slave_qps: Could not move all qps to busy"
3324 "for slave %d\n", slave);
3325
3326 spin_lock_irq(mlx4_tlock(dev));
3327 list_for_each_entry_safe(qp, tmp, qp_list, com.list) {
3328 spin_unlock_irq(mlx4_tlock(dev));
3329 if (qp->com.owner == slave) {
3330 qpn = qp->com.res_id;
3331 detach_qp(dev, slave, qp);
3332 state = qp->com.from_state;
3333 while (state != 0) {
3334 switch (state) {
3335 case RES_QP_RESERVED:
3336 spin_lock_irq(mlx4_tlock(dev));
3337 rb_erase(&qp->com.node,
3338 &tracker->res_tree[RES_QP]);
3339 list_del(&qp->com.list);
3340 spin_unlock_irq(mlx4_tlock(dev));
3341 kfree(qp);
3342 state = 0;
3343 break;
3344 case RES_QP_MAPPED:
3345 if (!valid_reserved(dev, slave, qpn))
3346 __mlx4_qp_free_icm(dev, qpn);
3347 state = RES_QP_RESERVED;
3348 break;
3349 case RES_QP_HW:
3350 in_param = slave;
3351 err = mlx4_cmd(dev, in_param,
3352 qp->local_qpn, 2,
3353 MLX4_CMD_2RST_QP,
3354 MLX4_CMD_TIME_CLASS_A,
3355 MLX4_CMD_NATIVE);
3356 if (err)
3357 mlx4_dbg(dev, "rem_slave_qps: failed"
3358 " to move slave %d qpn %d to"
3359 " reset\n", slave,
3360 qp->local_qpn);
3361 atomic_dec(&qp->rcq->ref_count);
3362 atomic_dec(&qp->scq->ref_count);
3363 atomic_dec(&qp->mtt->ref_count);
3364 if (qp->srq)
3365 atomic_dec(&qp->srq->ref_count);
3366 state = RES_QP_MAPPED;
3367 break;
3368 default:
3369 state = 0;
3370 }
3371 }
3372 }
3373 spin_lock_irq(mlx4_tlock(dev));
3374 }
3375 spin_unlock_irq(mlx4_tlock(dev));
3376 }
3377
3378 static void rem_slave_srqs(struct mlx4_dev *dev, int slave)
3379 {
3380 struct mlx4_priv *priv = mlx4_priv(dev);
3381 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3382 struct list_head *srq_list =
3383 &tracker->slave_list[slave].res_list[RES_SRQ];
3384 struct res_srq *srq;
3385 struct res_srq *tmp;
3386 int state;
3387 u64 in_param;
3388 LIST_HEAD(tlist);
3389 int srqn;
3390 int err;
3391
3392 err = move_all_busy(dev, slave, RES_SRQ);
3393 if (err)
3394 mlx4_warn(dev, "rem_slave_srqs: Could not move all srqs to "
3395 "busy for slave %d\n", slave);
3396
3397 spin_lock_irq(mlx4_tlock(dev));
3398 list_for_each_entry_safe(srq, tmp, srq_list, com.list) {
3399 spin_unlock_irq(mlx4_tlock(dev));
3400 if (srq->com.owner == slave) {
3401 srqn = srq->com.res_id;
3402 state = srq->com.from_state;
3403 while (state != 0) {
3404 switch (state) {
3405 case RES_SRQ_ALLOCATED:
3406 __mlx4_srq_free_icm(dev, srqn);
3407 spin_lock_irq(mlx4_tlock(dev));
3408 rb_erase(&srq->com.node,
3409 &tracker->res_tree[RES_SRQ]);
3410 list_del(&srq->com.list);
3411 spin_unlock_irq(mlx4_tlock(dev));
3412 kfree(srq);
3413 state = 0;
3414 break;
3415
3416 case RES_SRQ_HW:
3417 in_param = slave;
3418 err = mlx4_cmd(dev, in_param, srqn, 1,
3419 MLX4_CMD_HW2SW_SRQ,
3420 MLX4_CMD_TIME_CLASS_A,
3421 MLX4_CMD_NATIVE);
3422 if (err)
3423 mlx4_dbg(dev, "rem_slave_srqs: failed"
3424 " to move slave %d srq %d to"
3425 " SW ownership\n",
3426 slave, srqn);
3427
3428 atomic_dec(&srq->mtt->ref_count);
3429 if (srq->cq)
3430 atomic_dec(&srq->cq->ref_count);
3431 state = RES_SRQ_ALLOCATED;
3432 break;
3433
3434 default:
3435 state = 0;
3436 }
3437 }
3438 }
3439 spin_lock_irq(mlx4_tlock(dev));
3440 }
3441 spin_unlock_irq(mlx4_tlock(dev));
3442 }
3443
3444 static void rem_slave_cqs(struct mlx4_dev *dev, int slave)
3445 {
3446 struct mlx4_priv *priv = mlx4_priv(dev);
3447 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3448 struct list_head *cq_list =
3449 &tracker->slave_list[slave].res_list[RES_CQ];
3450 struct res_cq *cq;
3451 struct res_cq *tmp;
3452 int state;
3453 u64 in_param;
3454 LIST_HEAD(tlist);
3455 int cqn;
3456 int err;
3457
3458 err = move_all_busy(dev, slave, RES_CQ);
3459 if (err)
3460 mlx4_warn(dev, "rem_slave_cqs: Could not move all cqs to "
3461 "busy for slave %d\n", slave);
3462
3463 spin_lock_irq(mlx4_tlock(dev));
3464 list_for_each_entry_safe(cq, tmp, cq_list, com.list) {
3465 spin_unlock_irq(mlx4_tlock(dev));
3466 if (cq->com.owner == slave && !atomic_read(&cq->ref_count)) {
3467 cqn = cq->com.res_id;
3468 state = cq->com.from_state;
3469 while (state != 0) {
3470 switch (state) {
3471 case RES_CQ_ALLOCATED:
3472 __mlx4_cq_free_icm(dev, cqn);
3473 spin_lock_irq(mlx4_tlock(dev));
3474 rb_erase(&cq->com.node,
3475 &tracker->res_tree[RES_CQ]);
3476 list_del(&cq->com.list);
3477 spin_unlock_irq(mlx4_tlock(dev));
3478 kfree(cq);
3479 state = 0;
3480 break;
3481
3482 case RES_CQ_HW:
3483 in_param = slave;
3484 err = mlx4_cmd(dev, in_param, cqn, 1,
3485 MLX4_CMD_HW2SW_CQ,
3486 MLX4_CMD_TIME_CLASS_A,
3487 MLX4_CMD_NATIVE);
3488 if (err)
3489 mlx4_dbg(dev, "rem_slave_cqs: failed"
3490 " to move slave %d cq %d to"
3491 " SW ownership\n",
3492 slave, cqn);
3493 atomic_dec(&cq->mtt->ref_count);
3494 state = RES_CQ_ALLOCATED;
3495 break;
3496
3497 default:
3498 state = 0;
3499 }
3500 }
3501 }
3502 spin_lock_irq(mlx4_tlock(dev));
3503 }
3504 spin_unlock_irq(mlx4_tlock(dev));
3505 }
3506
3507 static void rem_slave_mrs(struct mlx4_dev *dev, int slave)
3508 {
3509 struct mlx4_priv *priv = mlx4_priv(dev);
3510 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3511 struct list_head *mpt_list =
3512 &tracker->slave_list[slave].res_list[RES_MPT];
3513 struct res_mpt *mpt;
3514 struct res_mpt *tmp;
3515 int state;
3516 u64 in_param;
3517 LIST_HEAD(tlist);
3518 int mptn;
3519 int err;
3520
3521 err = move_all_busy(dev, slave, RES_MPT);
3522 if (err)
3523 mlx4_warn(dev, "rem_slave_mrs: Could not move all mpts to "
3524 "busy for slave %d\n", slave);
3525
3526 spin_lock_irq(mlx4_tlock(dev));
3527 list_for_each_entry_safe(mpt, tmp, mpt_list, com.list) {
3528 spin_unlock_irq(mlx4_tlock(dev));
3529 if (mpt->com.owner == slave) {
3530 mptn = mpt->com.res_id;
3531 state = mpt->com.from_state;
3532 while (state != 0) {
3533 switch (state) {
3534 case RES_MPT_RESERVED:
3535 __mlx4_mpt_release(dev, mpt->key);
3536 spin_lock_irq(mlx4_tlock(dev));
3537 rb_erase(&mpt->com.node,
3538 &tracker->res_tree[RES_MPT]);
3539 list_del(&mpt->com.list);
3540 spin_unlock_irq(mlx4_tlock(dev));
3541 kfree(mpt);
3542 state = 0;
3543 break;
3544
3545 case RES_MPT_MAPPED:
3546 __mlx4_mpt_free_icm(dev, mpt->key);
3547 state = RES_MPT_RESERVED;
3548 break;
3549
3550 case RES_MPT_HW:
3551 in_param = slave;
3552 err = mlx4_cmd(dev, in_param, mptn, 0,
3553 MLX4_CMD_HW2SW_MPT,
3554 MLX4_CMD_TIME_CLASS_A,
3555 MLX4_CMD_NATIVE);
3556 if (err)
3557 mlx4_dbg(dev, "rem_slave_mrs: failed"
3558 " to move slave %d mpt %d to"
3559 " SW ownership\n",
3560 slave, mptn);
3561 if (mpt->mtt)
3562 atomic_dec(&mpt->mtt->ref_count);
3563 state = RES_MPT_MAPPED;
3564 break;
3565 default:
3566 state = 0;
3567 }
3568 }
3569 }
3570 spin_lock_irq(mlx4_tlock(dev));
3571 }
3572 spin_unlock_irq(mlx4_tlock(dev));
3573 }
3574
3575 static void rem_slave_mtts(struct mlx4_dev *dev, int slave)
3576 {
3577 struct mlx4_priv *priv = mlx4_priv(dev);
3578 struct mlx4_resource_tracker *tracker =
3579 &priv->mfunc.master.res_tracker;
3580 struct list_head *mtt_list =
3581 &tracker->slave_list[slave].res_list[RES_MTT];
3582 struct res_mtt *mtt;
3583 struct res_mtt *tmp;
3584 int state;
3585 LIST_HEAD(tlist);
3586 int base;
3587 int err;
3588
3589 err = move_all_busy(dev, slave, RES_MTT);
3590 if (err)
3591 mlx4_warn(dev, "rem_slave_mtts: Could not move all mtts to "
3592 "busy for slave %d\n", slave);
3593
3594 spin_lock_irq(mlx4_tlock(dev));
3595 list_for_each_entry_safe(mtt, tmp, mtt_list, com.list) {
3596 spin_unlock_irq(mlx4_tlock(dev));
3597 if (mtt->com.owner == slave) {
3598 base = mtt->com.res_id;
3599 state = mtt->com.from_state;
3600 while (state != 0) {
3601 switch (state) {
3602 case RES_MTT_ALLOCATED:
3603 __mlx4_free_mtt_range(dev, base,
3604 mtt->order);
3605 spin_lock_irq(mlx4_tlock(dev));
3606 rb_erase(&mtt->com.node,
3607 &tracker->res_tree[RES_MTT]);
3608 list_del(&mtt->com.list);
3609 spin_unlock_irq(mlx4_tlock(dev));
3610 kfree(mtt);
3611 state = 0;
3612 break;
3613
3614 default:
3615 state = 0;
3616 }
3617 }
3618 }
3619 spin_lock_irq(mlx4_tlock(dev));
3620 }
3621 spin_unlock_irq(mlx4_tlock(dev));
3622 }
3623
3624 static void rem_slave_fs_rule(struct mlx4_dev *dev, int slave)
3625 {
3626 struct mlx4_priv *priv = mlx4_priv(dev);
3627 struct mlx4_resource_tracker *tracker =
3628 &priv->mfunc.master.res_tracker;
3629 struct list_head *fs_rule_list =
3630 &tracker->slave_list[slave].res_list[RES_FS_RULE];
3631 struct res_fs_rule *fs_rule;
3632 struct res_fs_rule *tmp;
3633 int state;
3634 u64 base;
3635 int err;
3636
3637 err = move_all_busy(dev, slave, RES_FS_RULE);
3638 if (err)
3639 mlx4_warn(dev, "rem_slave_fs_rule: Could not move all mtts to busy for slave %d\n",
3640 slave);
3641
3642 spin_lock_irq(mlx4_tlock(dev));
3643 list_for_each_entry_safe(fs_rule, tmp, fs_rule_list, com.list) {
3644 spin_unlock_irq(mlx4_tlock(dev));
3645 if (fs_rule->com.owner == slave) {
3646 base = fs_rule->com.res_id;
3647 state = fs_rule->com.from_state;
3648 while (state != 0) {
3649 switch (state) {
3650 case RES_FS_RULE_ALLOCATED:
3651 /* detach rule */
3652 err = mlx4_cmd(dev, base, 0, 0,
3653 MLX4_QP_FLOW_STEERING_DETACH,
3654 MLX4_CMD_TIME_CLASS_A,
3655 MLX4_CMD_NATIVE);
3656
3657 spin_lock_irq(mlx4_tlock(dev));
3658 rb_erase(&fs_rule->com.node,
3659 &tracker->res_tree[RES_FS_RULE]);
3660 list_del(&fs_rule->com.list);
3661 spin_unlock_irq(mlx4_tlock(dev));
3662 kfree(fs_rule);
3663 state = 0;
3664 break;
3665
3666 default:
3667 state = 0;
3668 }
3669 }
3670 }
3671 spin_lock_irq(mlx4_tlock(dev));
3672 }
3673 spin_unlock_irq(mlx4_tlock(dev));
3674 }
3675
3676 static void rem_slave_eqs(struct mlx4_dev *dev, int slave)
3677 {
3678 struct mlx4_priv *priv = mlx4_priv(dev);
3679 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3680 struct list_head *eq_list =
3681 &tracker->slave_list[slave].res_list[RES_EQ];
3682 struct res_eq *eq;
3683 struct res_eq *tmp;
3684 int err;
3685 int state;
3686 LIST_HEAD(tlist);
3687 int eqn;
3688 struct mlx4_cmd_mailbox *mailbox;
3689
3690 err = move_all_busy(dev, slave, RES_EQ);
3691 if (err)
3692 mlx4_warn(dev, "rem_slave_eqs: Could not move all eqs to "
3693 "busy for slave %d\n", slave);
3694
3695 spin_lock_irq(mlx4_tlock(dev));
3696 list_for_each_entry_safe(eq, tmp, eq_list, com.list) {
3697 spin_unlock_irq(mlx4_tlock(dev));
3698 if (eq->com.owner == slave) {
3699 eqn = eq->com.res_id;
3700 state = eq->com.from_state;
3701 while (state != 0) {
3702 switch (state) {
3703 case RES_EQ_RESERVED:
3704 spin_lock_irq(mlx4_tlock(dev));
3705 rb_erase(&eq->com.node,
3706 &tracker->res_tree[RES_EQ]);
3707 list_del(&eq->com.list);
3708 spin_unlock_irq(mlx4_tlock(dev));
3709 kfree(eq);
3710 state = 0;
3711 break;
3712
3713 case RES_EQ_HW:
3714 mailbox = mlx4_alloc_cmd_mailbox(dev);
3715 if (IS_ERR(mailbox)) {
3716 cond_resched();
3717 continue;
3718 }
3719 err = mlx4_cmd_box(dev, slave, 0,
3720 eqn & 0xff, 0,
3721 MLX4_CMD_HW2SW_EQ,
3722 MLX4_CMD_TIME_CLASS_A,
3723 MLX4_CMD_NATIVE);
3724 if (err)
3725 mlx4_dbg(dev, "rem_slave_eqs: failed"
3726 " to move slave %d eqs %d to"
3727 " SW ownership\n", slave, eqn);
3728 mlx4_free_cmd_mailbox(dev, mailbox);
3729 atomic_dec(&eq->mtt->ref_count);
3730 state = RES_EQ_RESERVED;
3731 break;
3732
3733 default:
3734 state = 0;
3735 }
3736 }
3737 }
3738 spin_lock_irq(mlx4_tlock(dev));
3739 }
3740 spin_unlock_irq(mlx4_tlock(dev));
3741 }
3742
3743 static void rem_slave_counters(struct mlx4_dev *dev, int slave)
3744 {
3745 struct mlx4_priv *priv = mlx4_priv(dev);
3746 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3747 struct list_head *counter_list =
3748 &tracker->slave_list[slave].res_list[RES_COUNTER];
3749 struct res_counter *counter;
3750 struct res_counter *tmp;
3751 int err;
3752 int index;
3753
3754 err = move_all_busy(dev, slave, RES_COUNTER);
3755 if (err)
3756 mlx4_warn(dev, "rem_slave_counters: Could not move all counters to "
3757 "busy for slave %d\n", slave);
3758
3759 spin_lock_irq(mlx4_tlock(dev));
3760 list_for_each_entry_safe(counter, tmp, counter_list, com.list) {
3761 if (counter->com.owner == slave) {
3762 index = counter->com.res_id;
3763 rb_erase(&counter->com.node,
3764 &tracker->res_tree[RES_COUNTER]);
3765 list_del(&counter->com.list);
3766 kfree(counter);
3767 __mlx4_counter_free(dev, index);
3768 }
3769 }
3770 spin_unlock_irq(mlx4_tlock(dev));
3771 }
3772
3773 static void rem_slave_xrcdns(struct mlx4_dev *dev, int slave)
3774 {
3775 struct mlx4_priv *priv = mlx4_priv(dev);
3776 struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
3777 struct list_head *xrcdn_list =
3778 &tracker->slave_list[slave].res_list[RES_XRCD];
3779 struct res_xrcdn *xrcd;
3780 struct res_xrcdn *tmp;
3781 int err;
3782 int xrcdn;
3783
3784 err = move_all_busy(dev, slave, RES_XRCD);
3785 if (err)
3786 mlx4_warn(dev, "rem_slave_xrcdns: Could not move all xrcdns to "
3787 "busy for slave %d\n", slave);
3788
3789 spin_lock_irq(mlx4_tlock(dev));
3790 list_for_each_entry_safe(xrcd, tmp, xrcdn_list, com.list) {
3791 if (xrcd->com.owner == slave) {
3792 xrcdn = xrcd->com.res_id;
3793 rb_erase(&xrcd->com.node, &tracker->res_tree[RES_XRCD]);
3794 list_del(&xrcd->com.list);
3795 kfree(xrcd);
3796 __mlx4_xrcd_free(dev, xrcdn);
3797 }
3798 }
3799 spin_unlock_irq(mlx4_tlock(dev));
3800 }
3801
3802 void mlx4_delete_all_resources_for_slave(struct mlx4_dev *dev, int slave)
3803 {
3804 struct mlx4_priv *priv = mlx4_priv(dev);
3805
3806 mutex_lock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex);
3807 /*VLAN*/
3808 rem_slave_macs(dev, slave);
3809 rem_slave_qps(dev, slave);
3810 rem_slave_srqs(dev, slave);
3811 rem_slave_cqs(dev, slave);
3812 rem_slave_mrs(dev, slave);
3813 rem_slave_eqs(dev, slave);
3814 rem_slave_mtts(dev, slave);
3815 rem_slave_counters(dev, slave);
3816 rem_slave_xrcdns(dev, slave);
3817 rem_slave_fs_rule(dev, slave);
3818 mutex_unlock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex);
3819 }
Linux kernel - Deliverables
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