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 "hw_counters.h" 43 #define ROCE_DRV_MODULE_NAME "bnxt_re" 44 45 #define BNXT_RE_DESC "Broadcom NetXtreme-C/E RoCE Driver" 46 47 #define BNXT_RE_PAGE_SHIFT_1G (30) 48 #define BNXT_RE_PAGE_SIZE_SUPPORTED 0x7FFFF000 /* 4kb - 1G */ 49 50 #define BNXT_RE_MAX_MR_SIZE_LOW BIT_ULL(BNXT_RE_PAGE_SHIFT_1G) 51 #define BNXT_RE_MAX_MR_SIZE_HIGH BIT_ULL(39) 52 #define BNXT_RE_MAX_MR_SIZE BNXT_RE_MAX_MR_SIZE_HIGH 53 54 #define BNXT_RE_MAX_QPC_COUNT (64 * 1024) 55 #define BNXT_RE_MAX_MRW_COUNT (64 * 1024) 56 #define BNXT_RE_MAX_SRQC_COUNT (64 * 1024) 57 #define BNXT_RE_MAX_CQ_COUNT (64 * 1024) 58 #define BNXT_RE_MAX_MRW_COUNT_64K (64 * 1024) 59 #define BNXT_RE_MAX_MRW_COUNT_256K (256 * 1024) 60 61 /* Number of MRs to reserve for PF, leaving remainder for VFs */ 62 #define BNXT_RE_RESVD_MR_FOR_PF (32 * 1024) 63 #define BNXT_RE_MAX_GID_PER_VF 128 64 65 /* 66 * Percentage of resources of each type reserved for PF. 67 * Remaining resources are divided equally among VFs. 68 * [0, 100] 69 */ 70 #define BNXT_RE_PCT_RSVD_FOR_PF 50 71 72 #define BNXT_RE_UD_QP_HW_STALL 0x400000 73 74 #define BNXT_RE_RQ_WQE_THRESHOLD 32 75 76 /* 77 * Setting the default ack delay value to 16, which means 78 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout)) 79 */ 80 81 #define BNXT_RE_DEFAULT_ACK_DELAY 16 82 83 struct bnxt_re_ring_attr { 84 dma_addr_t *dma_arr; 85 int pages; 86 int type; 87 u32 depth; 88 u32 lrid; /* Logical ring id */ 89 u8 mode; 90 }; 91 92 struct bnxt_re_sqp_entries { 93 struct bnxt_qplib_sge sge; 94 u64 wrid; 95 /* For storing the actual qp1 cqe */ 96 struct bnxt_qplib_cqe cqe; 97 struct bnxt_re_qp *qp1_qp; 98 }; 99 100 #define BNXT_RE_MAX_GSI_SQP_ENTRIES 1024 101 struct bnxt_re_gsi_context { 102 struct bnxt_re_qp *gsi_qp; 103 struct bnxt_re_qp *gsi_sqp; 104 struct bnxt_re_ah *gsi_sah; 105 struct bnxt_re_sqp_entries *sqp_tbl; 106 }; 107 108 #define BNXT_RE_MIN_MSIX 2 109 #define BNXT_RE_MAX_MSIX 9 110 #define BNXT_RE_AEQ_IDX 0 111 #define BNXT_RE_NQ_IDX 1 112 #define BNXT_RE_GEN_P5_MAX_VF 64 113 114 struct bnxt_re_dev { 115 struct ib_device ibdev; 116 struct list_head list; 117 unsigned long flags; 118 #define BNXT_RE_FLAG_NETDEV_REGISTERED 0 119 #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_ERR_DEVICE_DETACHED 17 126 #define BNXT_RE_FLAG_ISSUE_ROCE_STATS 29 127 struct net_device *netdev; 128 struct notifier_block nb; 129 unsigned int version, major, minor; 130 struct bnxt_qplib_chip_ctx *chip_ctx; 131 struct bnxt_en_dev *en_dev; 132 int num_msix; 133 134 int id; 135 136 struct delayed_work worker; 137 u8 cur_prio_map; 138 139 /* FP Notification Queue (CQ & SRQ) */ 140 struct tasklet_struct nq_task; 141 142 /* RCFW Channel */ 143 struct bnxt_qplib_rcfw rcfw; 144 145 /* NQ */ 146 struct bnxt_qplib_nq nq[BNXT_RE_MAX_MSIX]; 147 148 /* Device Resources */ 149 struct bnxt_qplib_dev_attr dev_attr; 150 struct bnxt_qplib_ctx qplib_ctx; 151 struct bnxt_qplib_res qplib_res; 152 struct bnxt_qplib_dpi dpi_privileged; 153 154 atomic_t qp_count; 155 struct mutex qp_lock; /* protect qp list */ 156 struct list_head qp_list; 157 158 atomic_t cq_count; 159 atomic_t srq_count; 160 atomic_t mr_count; 161 atomic_t mw_count; 162 atomic_t ah_count; 163 atomic_t pd_count; 164 /* Max of 2 lossless traffic class supported per port */ 165 u16 cosq[2]; 166 167 /* QP for handling QP1 packets */ 168 struct bnxt_re_gsi_context gsi_ctx; 169 struct bnxt_re_stats stats; 170 atomic_t nq_alloc_cnt; 171 u32 is_virtfn; 172 u32 num_vfs; 173 }; 174 175 #define to_bnxt_re_dev(ptr, member) \ 176 container_of((ptr), struct bnxt_re_dev, member) 177 178 #define BNXT_RE_ROCE_V1_PACKET 0 179 #define BNXT_RE_ROCEV2_IPV4_PACKET 2 180 #define BNXT_RE_ROCEV2_IPV6_PACKET 3 181 182 static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev) 183 { 184 if (rdev) 185 return &rdev->ibdev.dev; 186 return NULL; 187 } 188 #endif 189