summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/bnxt_re/bnxt_re.h
blob: 9fd9849ebdd1428813e5d0b0a90b217629f0b077 (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
/*
 * Broadcom NetXtreme-E RoCE driver.
 *
 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
 *
 * 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:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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 AUTHOR 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 AUTHOR 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.
 *
 * Description: Slow Path Operators (header)
 *
 */

#ifndef __BNXT_RE_H__
#define __BNXT_RE_H__
#include <rdma/uverbs_ioctl.h>
#include "hw_counters.h"
#define ROCE_DRV_MODULE_NAME		"bnxt_re"

#define BNXT_RE_DESC	"Broadcom NetXtreme-C/E RoCE Driver"

#define BNXT_RE_PAGE_SHIFT_1G		(30)
#define BNXT_RE_PAGE_SIZE_SUPPORTED	0x7FFFF000 /* 4kb - 1G */

#define BNXT_RE_MAX_MR_SIZE_LOW		BIT_ULL(BNXT_RE_PAGE_SHIFT_1G)
#define BNXT_RE_MAX_MR_SIZE_HIGH	BIT_ULL(39)
#define BNXT_RE_MAX_MR_SIZE		BNXT_RE_MAX_MR_SIZE_HIGH

#define BNXT_RE_MAX_QPC_COUNT		(64 * 1024)
#define BNXT_RE_MAX_MRW_COUNT		(64 * 1024)
#define BNXT_RE_MAX_SRQC_COUNT		(64 * 1024)
#define BNXT_RE_MAX_CQ_COUNT		(64 * 1024)
#define BNXT_RE_MAX_MRW_COUNT_64K	(64 * 1024)
#define BNXT_RE_MAX_MRW_COUNT_256K	(256 * 1024)

/* Number of MRs to reserve for PF, leaving remainder for VFs */
#define BNXT_RE_RESVD_MR_FOR_PF         (32 * 1024)
#define BNXT_RE_MAX_GID_PER_VF          128

/*
 * Percentage of resources of each type reserved for PF.
 * Remaining resources are divided equally among VFs.
 * [0, 100]
 */
#define BNXT_RE_PCT_RSVD_FOR_PF         50

#define BNXT_RE_UD_QP_HW_STALL		0x400000

#define BNXT_RE_RQ_WQE_THRESHOLD	32

/*
 * Setting the default ack delay value to 16, which means
 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout))
 */

#define BNXT_RE_DEFAULT_ACK_DELAY	16

struct bnxt_re_ring_attr {
	dma_addr_t	*dma_arr;
	int		pages;
	int		type;
	u32		depth;
	u32		lrid; /* Logical ring id */
	u8		mode;
};

struct bnxt_re_sqp_entries {
	struct bnxt_qplib_sge sge;
	u64 wrid;
	/* For storing the actual qp1 cqe */
	struct bnxt_qplib_cqe cqe;
	struct bnxt_re_qp *qp1_qp;
};

#define BNXT_RE_MAX_GSI_SQP_ENTRIES	1024
struct bnxt_re_gsi_context {
	struct	bnxt_re_qp *gsi_qp;
	struct	bnxt_re_qp *gsi_sqp;
	struct	bnxt_re_ah *gsi_sah;
	struct	bnxt_re_sqp_entries *sqp_tbl;
};

#define BNXT_RE_MIN_MSIX		2
#define BNXT_RE_MAX_MSIX		9
#define BNXT_RE_AEQ_IDX			0
#define BNXT_RE_NQ_IDX			1
#define BNXT_RE_GEN_P5_MAX_VF		64

struct bnxt_re_pacing {
	u64 dbr_db_fifo_reg_off;
	void *dbr_page;
	u64 dbr_bar_addr;
	u32 pacing_algo_th;
	u32 do_pacing_save;
	u32 dbq_pacing_time; /* ms */
	u32 dbr_def_do_pacing;
	bool dbr_pacing;
	struct mutex dbq_lock; /* synchronize db pacing algo */
};

#define BNXT_RE_MAX_DBR_DO_PACING 0xFFFF
#define BNXT_RE_DBR_PACING_TIME 5 /* ms */
#define BNXT_RE_PACING_ALGO_THRESHOLD 250 /* Entries in DB FIFO */
#define BNXT_RE_PACING_ALARM_TH_MULTIPLE 2 /* Multiple of pacing algo threshold */
/* Default do_pacing value when there is no congestion */
#define BNXT_RE_DBR_DO_PACING_NO_CONGESTION 0x7F /* 1 in 512 probability */
#define BNXT_RE_DB_FIFO_ROOM_MASK 0x1FFF8000
#define BNXT_RE_MAX_FIFO_DEPTH 0x2c00
#define BNXT_RE_DB_FIFO_ROOM_SHIFT 15
#define BNXT_RE_GRC_FIFO_REG_BASE 0x2000

struct bnxt_re_dev {
	struct ib_device		ibdev;
	struct list_head		list;
	unsigned long			flags;
#define BNXT_RE_FLAG_NETDEV_REGISTERED		0
#define BNXT_RE_FLAG_HAVE_L2_REF		3
#define BNXT_RE_FLAG_RCFW_CHANNEL_EN		4
#define BNXT_RE_FLAG_QOS_WORK_REG		5
#define BNXT_RE_FLAG_RESOURCES_ALLOCATED	7
#define BNXT_RE_FLAG_RESOURCES_INITIALIZED	8
#define BNXT_RE_FLAG_ERR_DEVICE_DETACHED       17
#define BNXT_RE_FLAG_ISSUE_ROCE_STATS          29
	struct net_device		*netdev;
	struct notifier_block		nb;
	unsigned int			version, major, minor;
	struct bnxt_qplib_chip_ctx	*chip_ctx;
	struct bnxt_en_dev		*en_dev;
	int				num_msix;

	int				id;

	struct delayed_work		worker;
	u8				cur_prio_map;

	/* FP Notification Queue (CQ & SRQ) */
	struct tasklet_struct		nq_task;

	/* RCFW Channel */
	struct bnxt_qplib_rcfw		rcfw;

	/* NQ */
	struct bnxt_qplib_nq		nq[BNXT_RE_MAX_MSIX];

	/* Device Resources */
	struct bnxt_qplib_dev_attr	dev_attr;
	struct bnxt_qplib_ctx		qplib_ctx;
	struct bnxt_qplib_res		qplib_res;
	struct bnxt_qplib_dpi		dpi_privileged;

	struct mutex			qp_lock;	/* protect qp list */
	struct list_head		qp_list;

	/* Max of 2 lossless traffic class supported per port */
	u16				cosq[2];

	/* QP for handling QP1 packets */
	struct bnxt_re_gsi_context	gsi_ctx;
	struct bnxt_re_stats		stats;
	atomic_t nq_alloc_cnt;
	u32 is_virtfn;
	u32 num_vfs;
	struct bnxt_re_pacing pacing;
	struct work_struct dbq_fifo_check_work;
	struct delayed_work dbq_pacing_work;
};

#define to_bnxt_re_dev(ptr, member)	\
	container_of((ptr), struct bnxt_re_dev, member)

#define BNXT_RE_ROCE_V1_PACKET		0
#define BNXT_RE_ROCEV2_IPV4_PACKET	2
#define BNXT_RE_ROCEV2_IPV6_PACKET	3

#define BNXT_RE_CHECK_RC(x) ((x) && ((x) != -ETIMEDOUT))
void bnxt_re_pacing_alert(struct bnxt_re_dev *rdev);

static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
{
	if (rdev)
		return  &rdev->ibdev.dev;
	return NULL;
}

extern const struct uapi_definition bnxt_re_uapi_defs[];
#endif