summaryrefslogtreecommitdiff
path: root/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
blob: c7bb38c931a555b034e76580484d79851dd7546c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
/*
 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *	  copyright notice, this list of conditions and the following
 *	  disclaimer.
 *      - Redistributions in binary form must reproduce the above
 *	  copyright notice, this list of conditions and the following
 *	  disclaimer in the documentation and/or other materials
 *	  provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#ifndef __IW_CXGB4_H__
#define __IW_CXGB4_H__

#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/idr.h>
#include <linux/completion.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/inet.h>
#include <linux/wait.h>
#include <linux/kref.h>
#include <linux/timer.h>
#include <linux/io.h>

#include <asm/byteorder.h>

#include <net/net_namespace.h>

#include <rdma/ib_verbs.h>
#include <rdma/iw_cm.h>
#include <rdma/rdma_netlink.h>
#include <rdma/iw_portmap.h>

#include "cxgb4.h"
#include "cxgb4_uld.h"
#include "l2t.h"
#include "user.h"

#define DRV_NAME "iw_cxgb4"
#define MOD DRV_NAME ":"

extern int c4iw_debug;
#define PDBG(fmt, args...) \
do { \
	if (c4iw_debug) \
		printk(MOD fmt, ## args); \
} while (0)

#include "t4.h"

#define PBL_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->pbl.start)
#define RQT_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->rq.start)

static inline void *cplhdr(struct sk_buff *skb)
{
	return skb->data;
}

#define C4IW_ID_TABLE_F_RANDOM 1       /* Pseudo-randomize the id's returned */
#define C4IW_ID_TABLE_F_EMPTY  2       /* Table is initially empty */

struct c4iw_id_table {
	u32 flags;
	u32 start;              /* logical minimal id */
	u32 last;               /* hint for find */
	u32 max;
	spinlock_t lock;
	unsigned long *table;
};

struct c4iw_resource {
	struct c4iw_id_table tpt_table;
	struct c4iw_id_table qid_table;
	struct c4iw_id_table pdid_table;
};

struct c4iw_qid_list {
	struct list_head entry;
	u32 qid;
};

struct c4iw_dev_ucontext {
	struct list_head qpids;
	struct list_head cqids;
	struct mutex lock;
};

enum c4iw_rdev_flags {
	T4_FATAL_ERROR = (1<<0),
	T4_STATUS_PAGE_DISABLED = (1<<1),
};

struct c4iw_stat {
	u64 total;
	u64 cur;
	u64 max;
	u64 fail;
};

struct c4iw_stats {
	struct mutex lock;
	struct c4iw_stat qid;
	struct c4iw_stat pd;
	struct c4iw_stat stag;
	struct c4iw_stat pbl;
	struct c4iw_stat rqt;
	struct c4iw_stat ocqp;
	u64  db_full;
	u64  db_empty;
	u64  db_drop;
	u64  db_state_transitions;
	u64  db_fc_interruptions;
	u64  tcam_full;
	u64  act_ofld_conn_fails;
	u64  pas_ofld_conn_fails;
	u64  neg_adv;
};

struct c4iw_hw_queue {
	int t4_eq_status_entries;
	int t4_max_eq_size;
	int t4_max_iq_size;
	int t4_max_rq_size;
	int t4_max_sq_size;
	int t4_max_qp_depth;
	int t4_max_cq_depth;
	int t4_stat_len;
};

struct wr_log_entry {
	struct timespec post_host_ts;
	struct timespec poll_host_ts;
	u64 post_sge_ts;
	u64 cqe_sge_ts;
	u64 poll_sge_ts;
	u16 qid;
	u16 wr_id;
	u8 opcode;
	u8 valid;
};

struct c4iw_rdev {
	struct c4iw_resource resource;
	u32 qpmask;
	u32 cqmask;
	struct c4iw_dev_ucontext uctx;
	struct gen_pool *pbl_pool;
	struct gen_pool *rqt_pool;
	struct gen_pool *ocqp_pool;
	u32 flags;
	struct cxgb4_lld_info lldi;
	unsigned long bar2_pa;
	void __iomem *bar2_kva;
	unsigned long oc_mw_pa;
	void __iomem *oc_mw_kva;
	struct c4iw_stats stats;
	struct c4iw_hw_queue hw_queue;
	struct t4_dev_status_page *status_page;
	atomic_t wr_log_idx;
	struct wr_log_entry *wr_log;
	int wr_log_size;
};

static inline int c4iw_fatal_error(struct c4iw_rdev *rdev)
{
	return rdev->flags & T4_FATAL_ERROR;
}

static inline int c4iw_num_stags(struct c4iw_rdev *rdev)
{
	return (int)(rdev->lldi.vr->stag.size >> 5);
}

#define C4IW_WR_TO (60*HZ)

struct c4iw_wr_wait {
	struct completion completion;
	int ret;
};

static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp)
{
	wr_waitp->ret = 0;
	init_completion(&wr_waitp->completion);
}

static inline void c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret)
{
	wr_waitp->ret = ret;
	complete(&wr_waitp->completion);
}

static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev,
				 struct c4iw_wr_wait *wr_waitp,
				 u32 hwtid, u32 qpid,
				 const char *func)
{
	int ret;

	if (c4iw_fatal_error(rdev)) {
		wr_waitp->ret = -EIO;
		goto out;
	}

	ret = wait_for_completion_timeout(&wr_waitp->completion, C4IW_WR_TO);
	if (!ret) {
		PDBG("%s - Device %s not responding (disabling device) - tid %u qpid %u\n",
		     func, pci_name(rdev->lldi.pdev), hwtid, qpid);
		rdev->flags |= T4_FATAL_ERROR;
		wr_waitp->ret = -EIO;
	}
out:
	if (wr_waitp->ret)
		PDBG("%s: FW reply %d tid %u qpid %u\n",
		     pci_name(rdev->lldi.pdev), wr_waitp->ret, hwtid, qpid);
	return wr_waitp->ret;
}

enum db_state {
	NORMAL = 0,
	FLOW_CONTROL = 1,
	RECOVERY = 2,
	STOPPED = 3
};

struct c4iw_dev {
	struct ib_device ibdev;
	struct c4iw_rdev rdev;
	u32 device_cap_flags;
	struct idr cqidr;
	struct idr qpidr;
	struct idr mmidr;
	spinlock_t lock;
	struct mutex db_mutex;
	struct dentry *debugfs_root;
	enum db_state db_state;
	struct idr hwtid_idr;
	struct idr atid_idr;
	struct idr stid_idr;
	struct list_head db_fc_list;
	u32 avail_ird;
};

static inline struct c4iw_dev *to_c4iw_dev(struct ib_device *ibdev)
{
	return container_of(ibdev, struct c4iw_dev, ibdev);
}

static inline struct c4iw_dev *rdev_to_c4iw_dev(struct c4iw_rdev *rdev)
{
	return container_of(rdev, struct c4iw_dev, rdev);
}

static inline struct c4iw_cq *get_chp(struct c4iw_dev *rhp, u32 cqid)
{
	return idr_find(&rhp->cqidr, cqid);
}

static inline struct c4iw_qp *get_qhp(struct c4iw_dev *rhp, u32 qpid)
{
	return idr_find(&rhp->qpidr, qpid);
}

static inline struct c4iw_mr *get_mhp(struct c4iw_dev *rhp, u32 mmid)
{
	return idr_find(&rhp->mmidr, mmid);
}

static inline int _insert_handle(struct c4iw_dev *rhp, struct idr *idr,
				 void *handle, u32 id, int lock)
{
	int ret;

	if (lock) {
		idr_preload(GFP_KERNEL);
		spin_lock_irq(&rhp->lock);
	}

	ret = idr_alloc(idr, handle, id, id + 1, GFP_ATOMIC);

	if (lock) {
		spin_unlock_irq(&rhp->lock);
		idr_preload_end();
	}

	BUG_ON(ret == -ENOSPC);
	return ret < 0 ? ret : 0;
}

static inline int insert_handle(struct c4iw_dev *rhp, struct idr *idr,
				void *handle, u32 id)
{
	return _insert_handle(rhp, idr, handle, id, 1);
}

static inline int insert_handle_nolock(struct c4iw_dev *rhp, struct idr *idr,
				       void *handle, u32 id)
{
	return _insert_handle(rhp, idr, handle, id, 0);
}

static inline void _remove_handle(struct c4iw_dev *rhp, struct idr *idr,
				   u32 id, int lock)
{
	if (lock)
		spin_lock_irq(&rhp->lock);
	idr_remove(idr, id);
	if (lock)
		spin_unlock_irq(&rhp->lock);
}

static inline void remove_handle(struct c4iw_dev *rhp, struct idr *idr, u32 id)
{
	_remove_handle(rhp, idr, id, 1);
}

static inline void remove_handle_nolock(struct c4iw_dev *rhp,
					 struct idr *idr, u32 id)
{
	_remove_handle(rhp, idr, id, 0);
}

extern uint c4iw_max_read_depth;

static inline int cur_max_read_depth(struct c4iw_dev *dev)
{
	return min(dev->rdev.lldi.max_ordird_qp, c4iw_max_read_depth);
}

struct c4iw_pd {
	struct ib_pd ibpd;
	u32 pdid;
	struct c4iw_dev *rhp;
};

static inline struct c4iw_pd *to_c4iw_pd(struct ib_pd *ibpd)
{
	return container_of(ibpd, struct c4iw_pd, ibpd);
}

struct tpt_attributes {
	u64 len;
	u64 va_fbo;
	enum fw_ri_mem_perms perms;
	u32 stag;
	u32 pdid;
	u32 qpid;
	u32 pbl_addr;
	u32 pbl_size;
	u32 state:1;
	u32 type:2;
	u32 rsvd:1;
	u32 remote_invaliate_disable:1;
	u32 zbva:1;
	u32 mw_bind_enable:1;
	u32 page_size:5;
};

struct c4iw_mr {
	struct ib_mr ibmr;
	struct ib_umem *umem;
	struct c4iw_dev *rhp;
	u64 kva;
	struct tpt_attributes attr;
};

static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr)
{
	return container_of(ibmr, struct c4iw_mr, ibmr);
}

struct c4iw_mw {
	struct ib_mw ibmw;
	struct c4iw_dev *rhp;
	u64 kva;
	struct tpt_attributes attr;
};

static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw)
{
	return container_of(ibmw, struct c4iw_mw, ibmw);
}

struct c4iw_fr_page_list {
	struct ib_fast_reg_page_list ibpl;
	DEFINE_DMA_UNMAP_ADDR(mapping);
	dma_addr_t dma_addr;
	struct c4iw_dev *dev;
	int pll_len;
};

static inline struct c4iw_fr_page_list *to_c4iw_fr_page_list(
					struct ib_fast_reg_page_list *ibpl)
{
	return container_of(ibpl, struct c4iw_fr_page_list, ibpl);
}

struct c4iw_cq {
	struct ib_cq ibcq;
	struct c4iw_dev *rhp;
	struct t4_cq cq;
	spinlock_t lock;
	spinlock_t comp_handler_lock;
	atomic_t refcnt;
	wait_queue_head_t wait;
};

static inline struct c4iw_cq *to_c4iw_cq(struct ib_cq *ibcq)
{
	return container_of(ibcq, struct c4iw_cq, ibcq);
}

struct c4iw_mpa_attributes {
	u8 initiator;
	u8 recv_marker_enabled;
	u8 xmit_marker_enabled;
	u8 crc_enabled;
	u8 enhanced_rdma_conn;
	u8 version;
	u8 p2p_type;
};

struct c4iw_qp_attributes {
	u32 scq;
	u32 rcq;
	u32 sq_num_entries;
	u32 rq_num_entries;
	u32 sq_max_sges;
	u32 sq_max_sges_rdma_write;
	u32 rq_max_sges;
	u32 state;
	u8 enable_rdma_read;
	u8 enable_rdma_write;
	u8 enable_bind;
	u8 enable_mmid0_fastreg;
	u32 max_ord;
	u32 max_ird;
	u32 pd;
	u32 next_state;
	char terminate_buffer[52];
	u32 terminate_msg_len;
	u8 is_terminate_local;
	struct c4iw_mpa_attributes mpa_attr;
	struct c4iw_ep *llp_stream_handle;
	u8 layer_etype;
	u8 ecode;
	u16 sq_db_inc;
	u16 rq_db_inc;
	u8 send_term;
};

struct c4iw_qp {
	struct ib_qp ibqp;
	struct list_head db_fc_entry;
	struct c4iw_dev *rhp;
	struct c4iw_ep *ep;
	struct c4iw_qp_attributes attr;
	struct t4_wq wq;
	spinlock_t lock;
	struct mutex mutex;
	atomic_t refcnt;
	wait_queue_head_t wait;
	struct timer_list timer;
	int sq_sig_all;
};

static inline struct c4iw_qp *to_c4iw_qp(struct ib_qp *ibqp)
{
	return container_of(ibqp, struct c4iw_qp, ibqp);
}

struct c4iw_ucontext {
	struct ib_ucontext ibucontext;
	struct c4iw_dev_ucontext uctx;
	u32 key;
	spinlock_t mmap_lock;
	struct list_head mmaps;
};

static inline struct c4iw_ucontext *to_c4iw_ucontext(struct ib_ucontext *c)
{
	return container_of(c, struct c4iw_ucontext, ibucontext);
}

struct c4iw_mm_entry {
	struct list_head entry;
	u64 addr;
	u32 key;
	unsigned len;
};

static inline struct c4iw_mm_entry *remove_mmap(struct c4iw_ucontext *ucontext,
						u32 key, unsigned len)
{
	struct list_head *pos, *nxt;
	struct c4iw_mm_entry *mm;

	spin_lock(&ucontext->mmap_lock);
	list_for_each_safe(pos, nxt, &ucontext->mmaps) {

		mm = list_entry(pos, struct c4iw_mm_entry, entry);
		if (mm->key == key && mm->len == len) {
			list_del_init(&mm->entry);
			spin_unlock(&ucontext->mmap_lock);
			PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__,
			     key, (unsigned long long) mm->addr, mm->len);
			return mm;
		}
	}
	spin_unlock(&ucontext->mmap_lock);
	return NULL;
}

static inline void insert_mmap(struct c4iw_ucontext *ucontext,
			       struct c4iw_mm_entry *mm)
{
	spin_lock(&ucontext->mmap_lock);
	PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__,
	     mm->key, (unsigned long long) mm->addr, mm->len);
	list_add_tail(&mm->entry, &ucontext->mmaps);
	spin_unlock(&ucontext->mmap_lock);
}

enum c4iw_qp_attr_mask {
	C4IW_QP_ATTR_NEXT_STATE = 1 << 0,
	C4IW_QP_ATTR_SQ_DB = 1<<1,
	C4IW_QP_ATTR_RQ_DB = 1<<2,
	C4IW_QP_ATTR_ENABLE_RDMA_READ = 1 << 7,
	C4IW_QP_ATTR_ENABLE_RDMA_WRITE = 1 << 8,
	C4IW_QP_ATTR_ENABLE_RDMA_BIND = 1 << 9,
	C4IW_QP_ATTR_MAX_ORD = 1 << 11,
	C4IW_QP_ATTR_MAX_IRD = 1 << 12,
	C4IW_QP_ATTR_LLP_STREAM_HANDLE = 1 << 22,
	C4IW_QP_ATTR_STREAM_MSG_BUFFER = 1 << 23,
	C4IW_QP_ATTR_MPA_ATTR = 1 << 24,
	C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE = 1 << 25,
	C4IW_QP_ATTR_VALID_MODIFY = (C4IW_QP_ATTR_ENABLE_RDMA_READ |
				     C4IW_QP_ATTR_ENABLE_RDMA_WRITE |
				     C4IW_QP_ATTR_MAX_ORD |
				     C4IW_QP_ATTR_MAX_IRD |
				     C4IW_QP_ATTR_LLP_STREAM_HANDLE |
				     C4IW_QP_ATTR_STREAM_MSG_BUFFER |
				     C4IW_QP_ATTR_MPA_ATTR |
				     C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE)
};

int c4iw_modify_qp(struct c4iw_dev *rhp,
				struct c4iw_qp *qhp,
				enum c4iw_qp_attr_mask mask,
				struct c4iw_qp_attributes *attrs,
				int internal);

enum c4iw_qp_state {
	C4IW_QP_STATE_IDLE,
	C4IW_QP_STATE_RTS,
	C4IW_QP_STATE_ERROR,
	C4IW_QP_STATE_TERMINATE,
	C4IW_QP_STATE_CLOSING,
	C4IW_QP_STATE_TOT
};

static inline int c4iw_convert_state(enum ib_qp_state ib_state)
{
	switch (ib_state) {
	case IB_QPS_RESET:
	case IB_QPS_INIT:
		return C4IW_QP_STATE_IDLE;
	case IB_QPS_RTS:
		return C4IW_QP_STATE_RTS;
	case IB_QPS_SQD:
		return C4IW_QP_STATE_CLOSING;
	case IB_QPS_SQE:
		return C4IW_QP_STATE_TERMINATE;
	case IB_QPS_ERR:
		return C4IW_QP_STATE_ERROR;
	default:
		return -1;
	}
}

static inline int to_ib_qp_state(int c4iw_qp_state)
{
	switch (c4iw_qp_state) {
	case C4IW_QP_STATE_IDLE:
		return IB_QPS_INIT;
	case C4IW_QP_STATE_RTS:
		return IB_QPS_RTS;
	case C4IW_QP_STATE_CLOSING:
		return IB_QPS_SQD;
	case C4IW_QP_STATE_TERMINATE:
		return IB_QPS_SQE;
	case C4IW_QP_STATE_ERROR:
		return IB_QPS_ERR;
	}
	return IB_QPS_ERR;
}

static inline u32 c4iw_ib_to_tpt_access(int a)
{
	return (a & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) |
	       (a & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0) |
	       (a & IB_ACCESS_LOCAL_WRITE ? FW_RI_MEM_ACCESS_LOCAL_WRITE : 0) |
	       FW_RI_MEM_ACCESS_LOCAL_READ;
}

static inline u32 c4iw_ib_to_tpt_bind_access(int acc)
{
	return (acc & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) |
	       (acc & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0);
}

enum c4iw_mmid_state {
	C4IW_STAG_STATE_VALID,
	C4IW_STAG_STATE_INVALID
};

#define C4IW_NODE_DESC "cxgb4 Chelsio Communications"

#define MPA_KEY_REQ "MPA ID Req Frame"
#define MPA_KEY_REP "MPA ID Rep Frame"

#define MPA_MAX_PRIVATE_DATA	256
#define MPA_ENHANCED_RDMA_CONN	0x10
#define MPA_REJECT		0x20
#define MPA_CRC			0x40
#define MPA_MARKERS		0x80
#define MPA_FLAGS_MASK		0xE0

#define MPA_V2_PEER2PEER_MODEL          0x8000
#define MPA_V2_ZERO_LEN_FPDU_RTR        0x4000
#define MPA_V2_RDMA_WRITE_RTR           0x8000
#define MPA_V2_RDMA_READ_RTR            0x4000
#define MPA_V2_IRD_ORD_MASK             0x3FFF

#define c4iw_put_ep(ep) { \
	PDBG("put_ep (via %s:%u) ep %p refcnt %d\n", __func__, __LINE__,  \
	     ep, atomic_read(&((ep)->kref.refcount))); \
	WARN_ON(atomic_read(&((ep)->kref.refcount)) < 1); \
	kref_put(&((ep)->kref), _c4iw_free_ep); \
}

#define c4iw_get_ep(ep) { \
	PDBG("get_ep (via %s:%u) ep %p, refcnt %d\n", __func__, __LINE__, \
	     ep, atomic_read(&((ep)->kref.refcount))); \
	kref_get(&((ep)->kref));  \
}
void _c4iw_free_ep(struct kref *kref);

struct mpa_message {
	u8 key[16];
	u8 flags;
	u8 revision;
	__be16 private_data_size;
	u8 private_data[0];
};

struct mpa_v2_conn_params {
	__be16 ird;
	__be16 ord;
};

struct terminate_message {
	u8 layer_etype;
	u8 ecode;
	__be16 hdrct_rsvd;
	u8 len_hdrs[0];
};

#define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28)

enum c4iw_layers_types {
	LAYER_RDMAP		= 0x00,
	LAYER_DDP		= 0x10,
	LAYER_MPA		= 0x20,
	RDMAP_LOCAL_CATA	= 0x00,
	RDMAP_REMOTE_PROT	= 0x01,
	RDMAP_REMOTE_OP		= 0x02,
	DDP_LOCAL_CATA		= 0x00,
	DDP_TAGGED_ERR		= 0x01,
	DDP_UNTAGGED_ERR	= 0x02,
	DDP_LLP			= 0x03
};

enum c4iw_rdma_ecodes {
	RDMAP_INV_STAG		= 0x00,
	RDMAP_BASE_BOUNDS	= 0x01,
	RDMAP_ACC_VIOL		= 0x02,
	RDMAP_STAG_NOT_ASSOC	= 0x03,
	RDMAP_TO_WRAP		= 0x04,
	RDMAP_INV_VERS		= 0x05,
	RDMAP_INV_OPCODE	= 0x06,
	RDMAP_STREAM_CATA	= 0x07,
	RDMAP_GLOBAL_CATA	= 0x08,
	RDMAP_CANT_INV_STAG	= 0x09,
	RDMAP_UNSPECIFIED	= 0xff
};

enum c4iw_ddp_ecodes {
	DDPT_INV_STAG		= 0x00,
	DDPT_BASE_BOUNDS	= 0x01,
	DDPT_STAG_NOT_ASSOC	= 0x02,
	DDPT_TO_WRAP		= 0x03,
	DDPT_INV_VERS		= 0x04,
	DDPU_INV_QN		= 0x01,
	DDPU_INV_MSN_NOBUF	= 0x02,
	DDPU_INV_MSN_RANGE	= 0x03,
	DDPU_INV_MO		= 0x04,
	DDPU_MSG_TOOBIG		= 0x05,
	DDPU_INV_VERS		= 0x06
};

enum c4iw_mpa_ecodes {
	MPA_CRC_ERR		= 0x02,
	MPA_MARKER_ERR          = 0x03,
	MPA_LOCAL_CATA          = 0x05,
	MPA_INSUFF_IRD          = 0x06,
	MPA_NOMATCH_RTR         = 0x07,
};

enum c4iw_ep_state {
	IDLE = 0,
	LISTEN,
	CONNECTING,
	MPA_REQ_WAIT,
	MPA_REQ_SENT,
	MPA_REQ_RCVD,
	MPA_REP_SENT,
	FPDU_MODE,
	ABORTING,
	CLOSING,
	MORIBUND,
	DEAD,
};

enum c4iw_ep_flags {
	PEER_ABORT_IN_PROGRESS	= 0,
	ABORT_REQ_IN_PROGRESS	= 1,
	RELEASE_RESOURCES	= 2,
	CLOSE_SENT		= 3,
	TIMEOUT                 = 4,
	QP_REFERENCED           = 5,
	RELEASE_MAPINFO		= 6,
};

enum c4iw_ep_history {
	ACT_OPEN_REQ            = 0,
	ACT_OFLD_CONN           = 1,
	ACT_OPEN_RPL            = 2,
	ACT_ESTAB               = 3,
	PASS_ACCEPT_REQ         = 4,
	PASS_ESTAB              = 5,
	ABORT_UPCALL            = 6,
	ESTAB_UPCALL            = 7,
	CLOSE_UPCALL            = 8,
	ULP_ACCEPT              = 9,
	ULP_REJECT              = 10,
	TIMEDOUT                = 11,
	PEER_ABORT              = 12,
	PEER_CLOSE              = 13,
	CONNREQ_UPCALL          = 14,
	ABORT_CONN              = 15,
	DISCONN_UPCALL          = 16,
	EP_DISC_CLOSE           = 17,
	EP_DISC_ABORT           = 18,
	CONN_RPL_UPCALL         = 19,
	ACT_RETRY_NOMEM         = 20,
	ACT_RETRY_INUSE         = 21
};

struct c4iw_ep_common {
	struct iw_cm_id *cm_id;
	struct c4iw_qp *qp;
	struct c4iw_dev *dev;
	enum c4iw_ep_state state;
	struct kref kref;
	struct mutex mutex;
	struct sockaddr_storage local_addr;
	struct sockaddr_storage remote_addr;
	struct sockaddr_storage mapped_local_addr;
	struct sockaddr_storage mapped_remote_addr;
	struct c4iw_wr_wait wr_wait;
	unsigned long flags;
	unsigned long history;
};

struct c4iw_listen_ep {
	struct c4iw_ep_common com;
	unsigned int stid;
	int backlog;
};

struct c4iw_ep_stats {
	unsigned connect_neg_adv;
	unsigned abort_neg_adv;
};

struct c4iw_ep {
	struct c4iw_ep_common com;
	struct c4iw_ep *parent_ep;
	struct timer_list timer;
	struct list_head entry;
	unsigned int atid;
	u32 hwtid;
	u32 snd_seq;
	u32 rcv_seq;
	struct l2t_entry *l2t;
	struct dst_entry *dst;
	struct sk_buff *mpa_skb;
	struct c4iw_mpa_attributes mpa_attr;
	u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA];
	unsigned int mpa_pkt_len;
	u32 ird;
	u32 ord;
	u32 smac_idx;
	u32 tx_chan;
	u32 mtu;
	u16 mss;
	u16 emss;
	u16 plen;
	u16 rss_qid;
	u16 txq_idx;
	u16 ctrlq_idx;
	u8 tos;
	u8 retry_with_mpa_v1;
	u8 tried_with_mpa_v1;
	unsigned int retry_count;
	int snd_win;
	int rcv_win;
	struct c4iw_ep_stats stats;
};

static inline void print_addr(struct c4iw_ep_common *epc, const char *func,
			      const char *msg)
{

#define SINA(a) (&(((struct sockaddr_in *)(a))->sin_addr.s_addr))
#define SINP(a) ntohs(((struct sockaddr_in *)(a))->sin_port)
#define SIN6A(a) (&(((struct sockaddr_in6 *)(a))->sin6_addr))
#define SIN6P(a) ntohs(((struct sockaddr_in6 *)(a))->sin6_port)

	if (c4iw_debug) {
		switch (epc->local_addr.ss_family) {
		case AF_INET:
			PDBG("%s %s %pI4:%u/%u <-> %pI4:%u/%u\n",
			     func, msg, SINA(&epc->local_addr),
			     SINP(&epc->local_addr),
			     SINP(&epc->mapped_local_addr),
			     SINA(&epc->remote_addr),
			     SINP(&epc->remote_addr),
			     SINP(&epc->mapped_remote_addr));
			break;
		case AF_INET6:
			PDBG("%s %s %pI6:%u/%u <-> %pI6:%u/%u\n",
			     func, msg, SIN6A(&epc->local_addr),
			     SIN6P(&epc->local_addr),
			     SIN6P(&epc->mapped_local_addr),
			     SIN6A(&epc->remote_addr),
			     SIN6P(&epc->remote_addr),
			     SIN6P(&epc->mapped_remote_addr));
			break;
		default:
			break;
		}
	}
#undef SINA
#undef SINP
#undef SIN6A
#undef SIN6P
}

static inline struct c4iw_ep *to_ep(struct iw_cm_id *cm_id)
{
	return cm_id->provider_data;
}

static inline struct c4iw_listen_ep *to_listen_ep(struct iw_cm_id *cm_id)
{
	return cm_id->provider_data;
}

static inline int compute_wscale(int win)
{
	int wscale = 0;

	while (wscale < 14 && (65535<<wscale) < win)
		wscale++;
	return wscale;
}

static inline int ocqp_supported(const struct cxgb4_lld_info *infop)
{
#if defined(__i386__) || defined(__x86_64__) || defined(CONFIG_PPC64)
	return infop->vr->ocq.size > 0;
#else
	return 0;
#endif
}

u32 c4iw_id_alloc(struct c4iw_id_table *alloc);
void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj);
int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
			u32 reserved, u32 flags);
void c4iw_id_table_free(struct c4iw_id_table *alloc);

typedef int (*c4iw_handler_func)(struct c4iw_dev *dev, struct sk_buff *skb);

int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
		     struct l2t_entry *l2t);
void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qpid,
		   struct c4iw_dev_ucontext *uctx);
u32 c4iw_get_resource(struct c4iw_id_table *id_table);
void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry);
int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid);
int c4iw_init_ctrl_qp(struct c4iw_rdev *rdev);
int c4iw_pblpool_create(struct c4iw_rdev *rdev);
int c4iw_rqtpool_create(struct c4iw_rdev *rdev);
int c4iw_ocqp_pool_create(struct c4iw_rdev *rdev);
void c4iw_pblpool_destroy(struct c4iw_rdev *rdev);
void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev);
void c4iw_ocqp_pool_destroy(struct c4iw_rdev *rdev);
void c4iw_destroy_resource(struct c4iw_resource *rscp);
int c4iw_destroy_ctrl_qp(struct c4iw_rdev *rdev);
int c4iw_register_device(struct c4iw_dev *dev);
void c4iw_unregister_device(struct c4iw_dev *dev);
int __init c4iw_cm_init(void);
void c4iw_cm_term(void);
void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev,
			       struct c4iw_dev_ucontext *uctx);
void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev,
			    struct c4iw_dev_ucontext *uctx);
int c4iw_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
		      struct ib_send_wr **bad_wr);
int c4iw_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
		      struct ib_recv_wr **bad_wr);
int c4iw_bind_mw(struct ib_qp *qp, struct ib_mw *mw,
		 struct ib_mw_bind *mw_bind);
int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog);
int c4iw_destroy_listen(struct iw_cm_id *cm_id);
int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
void c4iw_qp_add_ref(struct ib_qp *qp);
void c4iw_qp_rem_ref(struct ib_qp *qp);
void c4iw_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list);
struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl(
					struct ib_device *device,
					int page_list_len);
struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd,
			    enum ib_mr_type mr_type,
			    u32 max_num_sg);
int c4iw_dealloc_mw(struct ib_mw *mw);
struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type);
struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start,
					   u64 length, u64 virt, int acc,
					   struct ib_udata *udata);
struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc);
struct ib_mr *c4iw_register_phys_mem(struct ib_pd *pd,
					struct ib_phys_buf *buffer_list,
					int num_phys_buf,
					int acc,
					u64 *iova_start);
int c4iw_reregister_phys_mem(struct ib_mr *mr,
				     int mr_rereg_mask,
				     struct ib_pd *pd,
				     struct ib_phys_buf *buffer_list,
				     int num_phys_buf,
				     int acc, u64 *iova_start);
int c4iw_dereg_mr(struct ib_mr *ib_mr);
int c4iw_destroy_cq(struct ib_cq *ib_cq);
struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
			     const struct ib_cq_init_attr *attr,
			     struct ib_ucontext *ib_context,
			     struct ib_udata *udata);
int c4iw_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata);
int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
int c4iw_destroy_qp(struct ib_qp *ib_qp);
struct ib_qp *c4iw_create_qp(struct ib_pd *pd,
			     struct ib_qp_init_attr *attrs,
			     struct ib_udata *udata);
int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
				 int attr_mask, struct ib_udata *udata);
int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
		     int attr_mask, struct ib_qp_init_attr *init_attr);
struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn);
u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size);
void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size);
u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size);
void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size);
u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size);
void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size);
int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb);
void c4iw_flush_hw_cq(struct c4iw_cq *chp);
void c4iw_count_rcqes(struct t4_cq *cq, struct t4_wq *wq, int *count);
int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp);
int c4iw_flush_rq(struct t4_wq *wq, struct t4_cq *cq, int count);
int c4iw_flush_sq(struct c4iw_qp *qhp);
int c4iw_ev_handler(struct c4iw_dev *rnicp, u32 qid);
u16 c4iw_rqes_posted(struct c4iw_qp *qhp);
int c4iw_post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe);
u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx);
void c4iw_put_cqid(struct c4iw_rdev *rdev, u32 qid,
		struct c4iw_dev_ucontext *uctx);
u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx);
void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid,
		struct c4iw_dev_ucontext *uctx);
void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe);

extern struct cxgb4_client t4c_client;
extern c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS];
void __iomem *c4iw_bar2_addrs(struct c4iw_rdev *rdev, unsigned int qid,
			      enum cxgb4_bar2_qtype qtype,
			      unsigned int *pbar2_qid, u64 *pbar2_pa);
extern void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe);
extern int c4iw_wr_log;
extern int db_fc_threshold;
extern int db_coalescing_threshold;
extern int use_dsgl;


#endif