2 * Broadcom NetXtreme-E RoCE driver.
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
5 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
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
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
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
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.
36 * Description: Slow Path Operators (header)
42 #define ROCE_DRV_MODULE_NAME "bnxt_re"
44 #define BNXT_RE_DESC "Broadcom NetXtreme-C/E RoCE Driver"
45 #define BNXT_RE_PAGE_SHIFT_4K (12)
46 #define BNXT_RE_PAGE_SHIFT_8K (13)
47 #define BNXT_RE_PAGE_SHIFT_64K (16)
48 #define BNXT_RE_PAGE_SHIFT_2M (21)
49 #define BNXT_RE_PAGE_SHIFT_8M (23)
50 #define BNXT_RE_PAGE_SHIFT_1G (30)
52 #define BNXT_RE_PAGE_SIZE_4K BIT(BNXT_RE_PAGE_SHIFT_4K)
53 #define BNXT_RE_PAGE_SIZE_8K BIT(BNXT_RE_PAGE_SHIFT_8K)
54 #define BNXT_RE_PAGE_SIZE_64K BIT(BNXT_RE_PAGE_SHIFT_64K)
55 #define BNXT_RE_PAGE_SIZE_2M BIT(BNXT_RE_PAGE_SHIFT_2M)
56 #define BNXT_RE_PAGE_SIZE_8M BIT(BNXT_RE_PAGE_SHIFT_8M)
57 #define BNXT_RE_PAGE_SIZE_1G BIT(BNXT_RE_PAGE_SHIFT_1G)
59 #define BNXT_RE_MAX_MR_SIZE_LOW BIT_ULL(BNXT_RE_PAGE_SHIFT_1G)
60 #define BNXT_RE_MAX_MR_SIZE_HIGH BIT_ULL(39)
61 #define BNXT_RE_MAX_MR_SIZE BNXT_RE_MAX_MR_SIZE_HIGH
63 #define BNXT_RE_MAX_QPC_COUNT (64 * 1024)
64 #define BNXT_RE_MAX_MRW_COUNT (64 * 1024)
65 #define BNXT_RE_MAX_SRQC_COUNT (64 * 1024)
66 #define BNXT_RE_MAX_CQ_COUNT (64 * 1024)
67 #define BNXT_RE_MAX_MRW_COUNT_64K (64 * 1024)
68 #define BNXT_RE_MAX_MRW_COUNT_256K (256 * 1024)
70 /* Number of MRs to reserve for PF, leaving remainder for VFs */
71 #define BNXT_RE_RESVD_MR_FOR_PF (32 * 1024)
72 #define BNXT_RE_MAX_GID_PER_VF 128
75 * Percentage of resources of each type reserved for PF.
76 * Remaining resources are divided equally among VFs.
79 #define BNXT_RE_PCT_RSVD_FOR_PF 50
81 #define BNXT_RE_UD_QP_HW_STALL 0x400000
83 #define BNXT_RE_RQ_WQE_THRESHOLD 32
86 * Setting the default ack delay value to 16, which means
87 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout))
90 #define BNXT_RE_DEFAULT_ACK_DELAY 16
93 struct work_struct work;
95 struct bnxt_re_dev *rdev;
96 struct net_device *vlan_dev;
99 struct bnxt_re_sqp_entries {
100 struct bnxt_qplib_sge sge;
102 /* For storing the actual qp1 cqe */
103 struct bnxt_qplib_cqe cqe;
104 struct bnxt_re_qp *qp1_qp;
107 #define BNXT_RE_MIN_MSIX 2
108 #define BNXT_RE_MAX_MSIX 9
109 #define BNXT_RE_AEQ_IDX 0
110 #define BNXT_RE_NQ_IDX 1
111 #define BNXT_RE_GEN_P5_MAX_VF 64
114 struct ib_device ibdev;
115 struct list_head list;
117 #define BNXT_RE_FLAG_NETDEV_REGISTERED 0
118 #define BNXT_RE_FLAG_IBDEV_REGISTERED 1
119 #define BNXT_RE_FLAG_GOT_MSIX 2
120 #define BNXT_RE_FLAG_HAVE_L2_REF 3
121 #define BNXT_RE_FLAG_RCFW_CHANNEL_EN 4
122 #define BNXT_RE_FLAG_QOS_WORK_REG 5
123 #define BNXT_RE_FLAG_RESOURCES_ALLOCATED 7
124 #define BNXT_RE_FLAG_RESOURCES_INITIALIZED 8
125 #define BNXT_RE_FLAG_ISSUE_ROCE_STATS 29
126 struct net_device *netdev;
127 unsigned int version, major, minor;
128 struct bnxt_qplib_chip_ctx chip_ctx;
129 struct bnxt_en_dev *en_dev;
130 struct bnxt_msix_entry msix_entries[BNXT_RE_MAX_MSIX];
135 struct delayed_work worker;
140 /* FP Notification Queue (CQ & SRQ) */
141 struct tasklet_struct nq_task;
144 struct bnxt_qplib_rcfw rcfw;
147 struct bnxt_qplib_nq nq[BNXT_RE_MAX_MSIX];
149 /* Device Resources */
150 struct bnxt_qplib_dev_attr dev_attr;
151 struct bnxt_qplib_ctx qplib_ctx;
152 struct bnxt_qplib_res qplib_res;
153 struct bnxt_qplib_dpi dpi_privileged;
156 struct mutex qp_lock; /* protect qp list */
157 struct list_head qp_list;
163 atomic_t sched_count;
164 /* Max of 2 lossless traffic class supported per port */
167 /* QP for for handling QP1 packets */
169 struct bnxt_re_qp *qp1_sqp;
170 struct bnxt_re_ah *sqp_ah;
171 struct bnxt_re_sqp_entries sqp_tbl[1024];
172 atomic_t nq_alloc_cnt;
175 struct bnxt_qplib_roce_stats stats;
178 #define to_bnxt_re_dev(ptr, member) \
179 container_of((ptr), struct bnxt_re_dev, member)
181 #define BNXT_RE_ROCE_V1_PACKET 0
182 #define BNXT_RE_ROCEV2_IPV4_PACKET 2
183 #define BNXT_RE_ROCEV2_IPV6_PACKET 3
185 static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
188 return &rdev->ibdev.dev;