aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/ocrdma/ocrdma.h
blob: 040bb8b5cb15a65c34b15ab67c3c5fe14e27524c (plain) (blame)
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
/* This file is part of the Emulex RoCE Device Driver for
 * RoCE (RDMA over Converged Ethernet) adapters.
 * Copyright (C) 2012-2015 Emulex. All rights reserved.
 * EMULEX and SLI are trademarks of Emulex.
 * www.emulex.com
 *
 * 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 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Contact Information:
 * linux-drivers@emulex.com
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 */

#ifndef __OCRDMA_H__
#define __OCRDMA_H__

#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/pci.h>

#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>

#include <be_roce.h>
#include "ocrdma_sli.h"

#define OCRDMA_ROCE_DRV_VERSION "11.0.0.0"

#define OCRDMA_ROCE_DRV_DESC "Emulex OneConnect RoCE Driver"
#define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA"

#define OC_NAME_SH	OCRDMA_NODE_DESC "(Skyhawk)"
#define OC_NAME_UNKNOWN OCRDMA_NODE_DESC "(Unknown)"

#define OC_SKH_DEVICE_PF 0x720
#define OC_SKH_DEVICE_VF 0x728
#define OCRDMA_MAX_AH 512

#define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)

#define convert_to_64bit(lo, hi) ((u64)hi << 32 | (u64)lo)
#define EQ_INTR_PER_SEC_THRSH_HI 150000
#define EQ_INTR_PER_SEC_THRSH_LOW 100000
#define EQ_AIC_MAX_EQD 20
#define EQ_AIC_MIN_EQD 0

void ocrdma_eqd_set_task(struct work_struct *work);

struct ocrdma_dev_attr {
	u8 fw_ver[32];
	u32 vendor_id;
	u32 device_id;
	u16 max_pd;
	u16 max_dpp_pds;
	u16 max_cq;
	u16 max_cqe;
	u16 max_qp;
	u16 max_wqe;
	u16 max_rqe;
	u16 max_srq;
	u32 max_inline_data;
	int max_send_sge;
	int max_recv_sge;
	int max_srq_sge;
	int max_rdma_sge;
	int max_mr;
	u64 max_mr_size;
	u32 max_num_mr_pbl;
	int max_mw;
	int max_fmr;
	int max_map_per_fmr;
	int max_pages_per_frmr;
	u16 max_ord_per_qp;
	u16 max_ird_per_qp;

	int device_cap_flags;
	u8 cq_overflow_detect;
	u8 srq_supported;

	u32 wqe_size;
	u32 rqe_size;
	u32 ird_page_size;
	u8 local_ca_ack_delay;
	u8 ird;
	u8 num_ird_pages;
};

struct ocrdma_dma_mem {
	void *va;
	dma_addr_t pa;
	u32 size;
};

struct ocrdma_pbl {
	void *va;
	dma_addr_t pa;
};

struct ocrdma_queue_info {
	void *va;
	dma_addr_t dma;
	u32 size;
	u16 len;
	u16 entry_size;		/* Size of an element in the queue */
	u16 id;			/* qid, where to ring the doorbell. */
	u16 head, tail;
	bool created;
};

struct ocrdma_aic_obj {         /* Adaptive interrupt coalescing (AIC) info */
	u32 prev_eqd;
	u64 eq_intr_cnt;
	u64 prev_eq_intr_cnt;
};

struct ocrdma_eq {
	struct ocrdma_queue_info q;
	u32 vector;
	int cq_cnt;
	struct ocrdma_dev *dev;
	char irq_name[32];
	struct ocrdma_aic_obj aic_obj;
};

struct ocrdma_mq {
	struct ocrdma_queue_info sq;
	struct ocrdma_queue_info cq;
	bool rearm_cq;
};

struct mqe_ctx {
	struct mutex lock; /* for serializing mailbox commands on MQ */
	wait_queue_head_t cmd_wait;
	u32 tag;
	u16 cqe_status;
	u16 ext_status;
	bool cmd_done;
	bool fw_error_state;
};

struct ocrdma_hw_mr {
	u32 lkey;
	u8 fr_mr;
	u8 remote_atomic;
	u8 remote_rd;
	u8 remote_wr;
	u8 local_rd;
	u8 local_wr;
	u8 mw_bind;
	u8 rsvd;
	u64 len;
	struct ocrdma_pbl *pbl_table;
	u32 num_pbls;
	u32 num_pbes;
	u32 pbl_size;
	u32 pbe_size;
	u64 fbo;
	u64 va;
};

struct ocrdma_mr {
	struct ib_mr ibmr;
	struct ib_umem *umem;
	struct ocrdma_hw_mr hwmr;
	u64 *pages;
	u32 npages;
};

struct ocrdma_stats {
	u8 type;
	struct ocrdma_dev *dev;
};

struct ocrdma_pd_resource_mgr {
	u32 pd_norm_start;
	u16 pd_norm_count;
	u16 pd_norm_thrsh;
	u16 max_normal_pd;
	u32 pd_dpp_start;
	u16 pd_dpp_count;
	u16 pd_dpp_thrsh;
	u16 max_dpp_pd;
	u16 dpp_page_index;
	unsigned long *pd_norm_bitmap;
	unsigned long *pd_dpp_bitmap;
	bool pd_prealloc_valid;
};

struct stats_mem {
	struct ocrdma_mqe mqe;
	void *va;
	dma_addr_t pa;
	u32 size;
	char *debugfs_mem;
};

struct phy_info {
	u16 auto_speeds_supported;
	u16 fixed_speeds_supported;
	u16 phy_type;
	u16 interface_type;
};

enum ocrdma_flags {
	OCRDMA_FLAGS_LINK_STATUS_INIT = 0x01
};

struct ocrdma_dev {
	struct ib_device ibdev;
	struct ocrdma_dev_attr attr;

	struct mutex dev_lock; /* provides syncronise access to device data */
	spinlock_t flush_q_lock ____cacheline_aligned;

	struct ocrdma_cq **cq_tbl;
	struct ocrdma_qp **qp_tbl;

	struct ocrdma_eq *eq_tbl;
	int eq_cnt;
	struct delayed_work eqd_work;
	u16 base_eqid;
	u16 max_eq;

	/* provided synchronization to sgid table for
	 * updating gid entries triggered by notifier.
	 */
	spinlock_t sgid_lock;

	int gsi_qp_created;
	struct ocrdma_cq *gsi_sqcq;
	struct ocrdma_cq *gsi_rqcq;

	struct {
		struct ocrdma_av *va;
		dma_addr_t pa;
		u32 size;
		u32 num_ah;
		/* provide synchronization for av
		 * entry allocations.
		 */
		spinlock_t lock;
		u32 ahid;
		struct ocrdma_pbl pbl;
	} av_tbl;

	void *mbx_cmd;
	struct ocrdma_mq mq;
	struct mqe_ctx mqe_ctx;

	struct be_dev_info nic_info;
	struct phy_info phy;
	char model_number[32];
	u32 hba_port_num;

	struct list_head entry;
	int id;
	u64 *stag_arr;
	u8 sl; /* service level */
	bool pfc_state;
	atomic_t update_sl;
	u16 pvid;
	u32 asic_id;
	u32 flags;

	ulong last_stats_time;
	struct mutex stats_lock; /* provide synch for debugfs operations */
	struct stats_mem stats_mem;
	struct ocrdma_stats rsrc_stats;
	struct ocrdma_stats rx_stats;
	struct ocrdma_stats wqe_stats;
	struct ocrdma_stats tx_stats;
	struct ocrdma_stats db_err_stats;
	struct ocrdma_stats tx_qp_err_stats;
	struct ocrdma_stats rx_qp_err_stats;
	struct ocrdma_stats tx_dbg_stats;
	struct ocrdma_stats rx_dbg_stats;
	struct ocrdma_stats driver_stats;
	struct ocrdma_stats reset_stats;
	struct dentry *dir;
	atomic_t async_err_stats[OCRDMA_MAX_ASYNC_ERRORS];
	atomic_t cqe_err_stats[OCRDMA_MAX_CQE_ERR];
	struct ocrdma_pd_resource_mgr *pd_mgr;
};

struct ocrdma_cq {
	struct ib_cq ibcq;
	struct ocrdma_cqe *va;
	u32 phase;
	u32 getp;	/* pointer to pending wrs to
			 * return to stack, wrap arounds
			 * at max_hw_cqe
			 */
	u32 max_hw_cqe;
	bool phase_change;
	bool deferred_arm, deferred_sol;
	bool first_arm;

	spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization
						   * to cq polling
						   */
	/* syncronizes cq completion handler invoked from multiple context */
	spinlock_t comp_handler_lock ____cacheline_aligned;
	u16 id;
	u16 eqn;

	struct ocrdma_ucontext *ucontext;
	dma_addr_t pa;
	u32 len;
	u32 cqe_cnt;

	/* head of all qp's sq and rq for which cqes need to be flushed
	 * by the software.
	 */
	struct list_head sq_head, rq_head;
};

struct ocrdma_pd {
	struct ib_pd ibpd;
	struct ocrdma_ucontext *uctx;
	u32 id;
	int num_dpp_qp;
	u32 dpp_page;
	bool dpp_enabled;
};

struct ocrdma_ah {
	struct ib_ah ibah;
	struct ocrdma_av *av;
	u16 sgid_index;
	u32 id;
};

struct ocrdma_qp_hwq_info {
	u8 *va;			/* virtual address */
	u32 max_sges;
	u32 head, tail;
	u32 entry_size;
	u32 max_cnt;
	u32 max_wqe_idx;
	u16 dbid;		/* qid, where to ring the doorbell. */
	u32 len;
	dma_addr_t pa;
};

struct ocrdma_srq {
	struct ib_srq ibsrq;
	u8 __iomem *db;
	struct ocrdma_qp_hwq_info rq;
	u64 *rqe_wr_id_tbl;
	u32 *idx_bit_fields;
	u32 bit_fields_len;

	/* provide synchronization to multiple context(s) posting rqe */
	spinlock_t q_lock ____cacheline_aligned;

	struct ocrdma_pd *pd;
	u32 id;
};

struct ocrdma_qp {
	struct ib_qp ibqp;

	u8 __iomem *sq_db;
	struct ocrdma_qp_hwq_info sq;
	struct {
		uint64_t wrid;
		uint16_t dpp_wqe_idx;
		uint16_t dpp_wqe;
		uint8_t  signaled;
		uint8_t  rsvd[3];
	} *wqe_wr_id_tbl;
	u32 max_inline_data;

	/* provide synchronization to multiple context(s) posting wqe, rqe */
	spinlock_t q_lock ____cacheline_aligned;
	struct ocrdma_cq *sq_cq;
	/* list maintained per CQ to flush SQ errors */
	struct list_head sq_entry;

	u8 __iomem *rq_db;
	struct ocrdma_qp_hwq_info rq;
	u64 *rqe_wr_id_tbl;
	struct ocrdma_cq *rq_cq;
	struct ocrdma_srq *srq;
	/* list maintained per CQ to flush RQ errors */
	struct list_head rq_entry;

	enum ocrdma_qp_state state;	/*  QP state */
	int cap_flags;
	u32 max_ord, max_ird;

	u32 id;
	struct ocrdma_pd *pd;

	enum ib_qp_type qp_type;

	int sgid_idx;
	u32 qkey;
	bool dpp_enabled;
	u8 *ird_q_va;
	bool signaled;
};

struct ocrdma_ucontext {
	struct ib_ucontext ibucontext;

	struct list_head mm_head;
	struct mutex mm_list_lock; /* protects list entries of mm type */
	struct ocrdma_pd *cntxt_pd;
	int pd_in_use;

	struct {
		u32 *va;
		dma_addr_t pa;
		u32 len;
	} ah_tbl;
};

struct ocrdma_mm {
	struct {
		u64 phy_addr;
		unsigned long len;
	} key;
	struct list_head entry;
};

static inline struct ocrdma_dev *get_ocrdma_dev(struct ib_device *ibdev)
{
	return container_of(ibdev, struct ocrdma_dev, ibdev);
}

static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext
							  *ibucontext)
{
	return container_of(ibucontext, struct ocrdma_ucontext, ibucontext);
}

static inline struct ocrdma_pd *get_ocrdma_pd(struct ib_pd *ibpd)
{
	return container_of(ibpd, struct ocrdma_pd, ibpd);
}

static inline struct ocrdma_cq *get_ocrdma_cq(struct ib_cq *ibcq)
{
	return container_of(ibcq, struct ocrdma_cq, ibcq);
}

static inline struct ocrdma_qp *get_ocrdma_qp(struct ib_qp *ibqp)
{
	return container_of(ibqp, struct ocrdma_qp, ibqp);
}

static inline struct ocrdma_mr *get_ocrdma_mr(struct ib_mr *ibmr)
{
	return container_of(ibmr, struct ocrdma_mr, ibmr);
}

static inline struct ocrdma_ah *get_ocrdma_ah(struct ib_ah *ibah)
{
	return container_of(ibah, struct ocrdma_ah, ibah);
}

static inline struct ocrdma_srq *get_ocrdma_srq(struct ib_srq *ibsrq)
{
	return container_of(ibsrq, struct ocrdma_srq, ibsrq);
}

static inline int is_cqe_valid(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe)
{
	int cqe_valid;
	cqe_valid = le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_VALID;
	return (cqe_valid == cq->phase);
}

static inline int is_cqe_for_sq(struct ocrdma_cqe *cqe)
{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
		OCRDMA_CQE_QTYPE) ? 0 : 1;
}

static inline int is_cqe_invalidated(struct ocrdma_cqe *cqe)
{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
		OCRDMA_CQE_INVALIDATE) ? 1 : 0;
}

static inline int is_cqe_imm(struct ocrdma_cqe *cqe)
{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
		OCRDMA_CQE_IMM) ? 1 : 0;
}

static inline int is_cqe_wr_imm(struct ocrdma_cqe *cqe)
{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
		OCRDMA_CQE_WRITE_IMM) ? 1 : 0;
}

static inline int ocrdma_resolve_dmac(struct ocrdma_dev *dev,
		struct ib_ah_attr *ah_attr, u8 *mac_addr)
{
	struct in6_addr in6;

	memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(in6));
	if (rdma_is_multicast_addr(&in6))
		rdma_get_mcast_mac(&in6, mac_addr);
	else if (rdma_link_local_addr(&in6))
		rdma_get_ll_mac(&in6, mac_addr);
	else
		memcpy(mac_addr, ah_attr->dmac, ETH_ALEN);
	return 0;
}

static inline char *hca_name(struct ocrdma_dev *dev)
{
	switch (dev->nic_info.pdev->device) {
	case OC_SKH_DEVICE_PF:
	case OC_SKH_DEVICE_VF:
		return OC_NAME_SH;
	default:
		return OC_NAME_UNKNOWN;
	}
}

static inline int ocrdma_get_eq_table_index(struct ocrdma_dev *dev,
		int eqid)
{
	int indx;

	for (indx = 0; indx < dev->eq_cnt; indx++) {
		if (dev->eq_tbl[indx].q.id == eqid)
			return indx;
	}

	return -EINVAL;
}

static inline u8 ocrdma_get_asic_type(struct ocrdma_dev *dev)
{
	if (dev->nic_info.dev_family == 0xF && !dev->asic_id) {
		pci_read_config_dword(
			dev->nic_info.pdev,
			OCRDMA_SLI_ASIC_ID_OFFSET, &dev->asic_id);
	}

	return (dev->asic_id & OCRDMA_SLI_ASIC_GEN_NUM_MASK) >>
				OCRDMA_SLI_ASIC_GEN_NUM_SHIFT;
}

static inline u8 ocrdma_get_pfc_prio(u8 *pfc, u8 prio)
{
	return *(pfc + prio);
}

static inline u8 ocrdma_get_app_prio(u8 *app_prio, u8 prio)
{
	return *(app_prio + prio);
}

static inline u8 ocrdma_is_enabled_and_synced(u32 state)
{	/* May also be used to interpret TC-state, QCN-state
	 * Appl-state and Logical-link-state in future.
	 */
	return (state & OCRDMA_STATE_FLAG_ENABLED) &&
		(state & OCRDMA_STATE_FLAG_SYNC);
}

static inline u8 ocrdma_get_ae_link_state(u32 ae_state)
{
	return ((ae_state & OCRDMA_AE_LSC_LS_MASK) >> OCRDMA_AE_LSC_LS_SHIFT);
}

#endif