1 /*
2  * Broadcom NetXtreme-E RoCE driver.
3  *
4  * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
5  * Broadcom refers to Broadcom Limited and/or its subsidiaries.
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  * BSD license below:
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  *
17  * 1. Redistributions of source code must retain the above copyright
18  *    notice, this list of conditions and the following disclaimer.
19  * 2. Redistributions in binary form must reproduce the above copyright
20  *    notice, this list of conditions and the following disclaimer in
21  *    the documentation and/or other materials provided with the
22  *    distribution.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35  *
36  * Description: Slow Path Operators (header)
37  *
38  */
39 
40 #ifndef __BNXT_RE_H__
41 #define __BNXT_RE_H__
42 #define ROCE_DRV_MODULE_NAME		"bnxt_re"
43 #define ROCE_DRV_MODULE_VERSION		"1.0.0"
44 
45 #define BNXT_RE_DESC	"Broadcom NetXtreme-C/E RoCE Driver"
46 
47 #define BNXT_RE_PAGE_SIZE_4K		BIT(12)
48 #define BNXT_RE_PAGE_SIZE_8K		BIT(13)
49 #define BNXT_RE_PAGE_SIZE_64K		BIT(16)
50 #define BNXT_RE_PAGE_SIZE_2M		BIT(21)
51 #define BNXT_RE_PAGE_SIZE_8M		BIT(23)
52 #define BNXT_RE_PAGE_SIZE_1G		BIT(30)
53 
54 #define BNXT_RE_MAX_MR_SIZE		BIT(30)
55 
56 #define BNXT_RE_MAX_QPC_COUNT		(64 * 1024)
57 #define BNXT_RE_MAX_MRW_COUNT		(64 * 1024)
58 #define BNXT_RE_MAX_SRQC_COUNT		(64 * 1024)
59 #define BNXT_RE_MAX_CQ_COUNT		(64 * 1024)
60 
61 #define BNXT_RE_UD_QP_HW_STALL		0x400000
62 
63 #define BNXT_RE_RQ_WQE_THRESHOLD	32
64 
65 /*
66  * Setting the default ack delay value to 16, which means
67  * the default timeout is approx. 260ms(4 usec * 2 ^(timeout))
68  */
69 
70 #define BNXT_RE_DEFAULT_ACK_DELAY	16
71 
72 struct bnxt_re_work {
73 	struct work_struct	work;
74 	unsigned long		event;
75 	struct bnxt_re_dev      *rdev;
76 	struct net_device	*vlan_dev;
77 };
78 
79 struct bnxt_re_sqp_entries {
80 	struct bnxt_qplib_sge sge;
81 	u64 wrid;
82 	/* For storing the actual qp1 cqe */
83 	struct bnxt_qplib_cqe cqe;
84 	struct bnxt_re_qp *qp1_qp;
85 };
86 
87 #define BNXT_RE_MIN_MSIX		2
88 #define BNXT_RE_MAX_MSIX		9
89 #define BNXT_RE_AEQ_IDX			0
90 #define BNXT_RE_NQ_IDX			1
91 
92 struct bnxt_re_dev {
93 	struct ib_device		ibdev;
94 	struct list_head		list;
95 	unsigned long			flags;
96 #define BNXT_RE_FLAG_NETDEV_REGISTERED	0
97 #define BNXT_RE_FLAG_IBDEV_REGISTERED	1
98 #define BNXT_RE_FLAG_GOT_MSIX		2
99 #define BNXT_RE_FLAG_RCFW_CHANNEL_EN	8
100 #define BNXT_RE_FLAG_QOS_WORK_REG	16
101 	struct net_device		*netdev;
102 	unsigned int			version, major, minor;
103 	struct bnxt_en_dev		*en_dev;
104 	struct bnxt_msix_entry		msix_entries[BNXT_RE_MAX_MSIX];
105 	int				num_msix;
106 
107 	int				id;
108 
109 	struct delayed_work		worker;
110 	u8				cur_prio_map;
111 
112 	/* FP Notification Queue (CQ & SRQ) */
113 	struct tasklet_struct		nq_task;
114 
115 	/* RCFW Channel */
116 	struct bnxt_qplib_rcfw		rcfw;
117 
118 	/* NQ */
119 	struct bnxt_qplib_nq		nq[BNXT_RE_MAX_MSIX];
120 
121 	/* Device Resources */
122 	struct bnxt_qplib_dev_attr	dev_attr;
123 	struct bnxt_qplib_ctx		qplib_ctx;
124 	struct bnxt_qplib_res		qplib_res;
125 	struct bnxt_qplib_dpi		dpi_privileged;
126 
127 	atomic_t			qp_count;
128 	struct mutex			qp_lock;	/* protect qp list */
129 	struct list_head		qp_list;
130 
131 	atomic_t			cq_count;
132 	atomic_t			srq_count;
133 	atomic_t			mr_count;
134 	atomic_t			mw_count;
135 	/* Max of 2 lossless traffic class supported per port */
136 	u16				cosq[2];
137 
138 	/* QP for for handling QP1 packets */
139 	u32				sqp_id;
140 	struct bnxt_re_qp		*qp1_sqp;
141 	struct bnxt_re_ah		*sqp_ah;
142 	struct bnxt_re_sqp_entries sqp_tbl[1024];
143 	atomic_t nq_alloc_cnt;
144 };
145 
146 #define to_bnxt_re_dev(ptr, member)	\
147 	container_of((ptr), struct bnxt_re_dev, member)
148 
149 #define BNXT_RE_ROCE_V1_PACKET		0
150 #define BNXT_RE_ROCEV2_IPV4_PACKET	2
151 #define BNXT_RE_ROCEV2_IPV6_PACKET	3
152 
153 static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
154 {
155 	if (rdev)
156 		return  &rdev->ibdev.dev;
157 	return NULL;
158 }
159 
160 #endif
161