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 #include <rdma/uverbs_ioctl.h> 43 #include "hw_counters.h" 44 #define ROCE_DRV_MODULE_NAME "bnxt_re" 45 46 #define BNXT_RE_DESC "Broadcom NetXtreme-C/E RoCE Driver" 47 48 #define BNXT_RE_PAGE_SHIFT_1G (30) 49 #define BNXT_RE_PAGE_SIZE_SUPPORTED 0x7FFFF000 /* 4kb - 1G */ 50 51 #define BNXT_RE_MAX_MR_SIZE_LOW BIT_ULL(BNXT_RE_PAGE_SHIFT_1G) 52 #define BNXT_RE_MAX_MR_SIZE_HIGH BIT_ULL(39) 53 #define BNXT_RE_MAX_MR_SIZE BNXT_RE_MAX_MR_SIZE_HIGH 54 55 #define BNXT_RE_MAX_QPC_COUNT (64 * 1024) 56 #define BNXT_RE_MAX_MRW_COUNT (64 * 1024) 57 #define BNXT_RE_MAX_SRQC_COUNT (64 * 1024) 58 #define BNXT_RE_MAX_CQ_COUNT (64 * 1024) 59 #define BNXT_RE_MAX_MRW_COUNT_64K (64 * 1024) 60 #define BNXT_RE_MAX_MRW_COUNT_256K (256 * 1024) 61 62 /* Number of MRs to reserve for PF, leaving remainder for VFs */ 63 #define BNXT_RE_RESVD_MR_FOR_PF (32 * 1024) 64 #define BNXT_RE_MAX_GID_PER_VF 128 65 66 /* 67 * Percentage of resources of each type reserved for PF. 68 * Remaining resources are divided equally among VFs. 69 * [0, 100] 70 */ 71 #define BNXT_RE_PCT_RSVD_FOR_PF 50 72 73 #define BNXT_RE_UD_QP_HW_STALL 0x400000 74 75 #define BNXT_RE_RQ_WQE_THRESHOLD 32 76 77 /* 78 * Setting the default ack delay value to 16, which means 79 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout)) 80 */ 81 82 #define BNXT_RE_DEFAULT_ACK_DELAY 16 83 84 struct bnxt_re_ring_attr { 85 dma_addr_t *dma_arr; 86 int pages; 87 int type; 88 u32 depth; 89 u32 lrid; /* Logical ring id */ 90 u8 mode; 91 }; 92 93 struct bnxt_re_sqp_entries { 94 struct bnxt_qplib_sge sge; 95 u64 wrid; 96 /* For storing the actual qp1 cqe */ 97 struct bnxt_qplib_cqe cqe; 98 struct bnxt_re_qp *qp1_qp; 99 }; 100 101 #define BNXT_RE_MAX_GSI_SQP_ENTRIES 1024 102 struct bnxt_re_gsi_context { 103 struct bnxt_re_qp *gsi_qp; 104 struct bnxt_re_qp *gsi_sqp; 105 struct bnxt_re_ah *gsi_sah; 106 struct bnxt_re_sqp_entries *sqp_tbl; 107 }; 108 109 #define BNXT_RE_MIN_MSIX 2 110 #define BNXT_RE_MAX_MSIX 9 111 #define BNXT_RE_AEQ_IDX 0 112 #define BNXT_RE_NQ_IDX 1 113 #define BNXT_RE_GEN_P5_MAX_VF 64 114 115 struct bnxt_re_dev { 116 struct ib_device ibdev; 117 struct list_head list; 118 unsigned long flags; 119 #define BNXT_RE_FLAG_NETDEV_REGISTERED 0 120 #define BNXT_RE_FLAG_GOT_MSIX 2 121 #define BNXT_RE_FLAG_HAVE_L2_REF 3 122 #define BNXT_RE_FLAG_RCFW_CHANNEL_EN 4 123 #define BNXT_RE_FLAG_QOS_WORK_REG 5 124 #define BNXT_RE_FLAG_RESOURCES_ALLOCATED 7 125 #define BNXT_RE_FLAG_RESOURCES_INITIALIZED 8 126 #define BNXT_RE_FLAG_ERR_DEVICE_DETACHED 17 127 #define BNXT_RE_FLAG_ISSUE_ROCE_STATS 29 128 struct net_device *netdev; 129 struct notifier_block nb; 130 unsigned int version, major, minor; 131 struct bnxt_qplib_chip_ctx *chip_ctx; 132 struct bnxt_en_dev *en_dev; 133 int num_msix; 134 135 int id; 136 137 struct delayed_work worker; 138 u8 cur_prio_map; 139 140 /* FP Notification Queue (CQ & SRQ) */ 141 struct tasklet_struct nq_task; 142 143 /* RCFW Channel */ 144 struct bnxt_qplib_rcfw rcfw; 145 146 /* NQ */ 147 struct bnxt_qplib_nq nq[BNXT_RE_MAX_MSIX]; 148 149 /* 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; 154 155 atomic_t qp_count; 156 struct mutex qp_lock; /* protect qp list */ 157 struct list_head qp_list; 158 159 atomic_t cq_count; 160 atomic_t srq_count; 161 atomic_t mr_count; 162 atomic_t mw_count; 163 atomic_t ah_count; 164 atomic_t pd_count; 165 /* Max of 2 lossless traffic class supported per port */ 166 u16 cosq[2]; 167 168 /* QP for handling QP1 packets */ 169 struct bnxt_re_gsi_context gsi_ctx; 170 struct bnxt_re_stats stats; 171 atomic_t nq_alloc_cnt; 172 u32 is_virtfn; 173 u32 num_vfs; 174 }; 175 176 #define to_bnxt_re_dev(ptr, member) \ 177 container_of((ptr), struct bnxt_re_dev, member) 178 179 #define BNXT_RE_ROCE_V1_PACKET 0 180 #define BNXT_RE_ROCEV2_IPV4_PACKET 2 181 #define BNXT_RE_ROCEV2_IPV6_PACKET 3 182 183 #define BNXT_RE_CHECK_RC(x) ((x) && ((x) != -ETIMEDOUT)) 184 185 static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev) 186 { 187 if (rdev) 188 return &rdev->ibdev.dev; 189 return NULL; 190 } 191 192 extern const struct uapi_definition bnxt_re_uapi_defs[]; 193 #endif 194