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 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) 51 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) 58 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 62 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) 69 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 73 74 /* 75 * Percentage of resources of each type reserved for PF. 76 * Remaining resources are divided equally among VFs. 77 * [0, 100] 78 */ 79 #define BNXT_RE_PCT_RSVD_FOR_PF 50 80 81 #define BNXT_RE_UD_QP_HW_STALL 0x400000 82 83 #define BNXT_RE_RQ_WQE_THRESHOLD 32 84 85 /* 86 * Setting the default ack delay value to 16, which means 87 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout)) 88 */ 89 90 #define BNXT_RE_DEFAULT_ACK_DELAY 16 91 92 struct bnxt_re_ring_attr { 93 dma_addr_t *dma_arr; 94 int pages; 95 int type; 96 u32 depth; 97 u32 lrid; /* Logical ring id */ 98 u8 mode; 99 }; 100 101 struct bnxt_re_work { 102 struct work_struct work; 103 unsigned long event; 104 struct bnxt_re_dev *rdev; 105 struct net_device *vlan_dev; 106 }; 107 108 struct bnxt_re_sqp_entries { 109 struct bnxt_qplib_sge sge; 110 u64 wrid; 111 /* For storing the actual qp1 cqe */ 112 struct bnxt_qplib_cqe cqe; 113 struct bnxt_re_qp *qp1_qp; 114 }; 115 116 #define BNXT_RE_MAX_GSI_SQP_ENTRIES 1024 117 struct bnxt_re_gsi_context { 118 struct bnxt_re_qp *gsi_qp; 119 struct bnxt_re_qp *gsi_sqp; 120 struct bnxt_re_ah *gsi_sah; 121 struct bnxt_re_sqp_entries *sqp_tbl; 122 }; 123 124 #define BNXT_RE_MIN_MSIX 2 125 #define BNXT_RE_MAX_MSIX 9 126 #define BNXT_RE_AEQ_IDX 0 127 #define BNXT_RE_NQ_IDX 1 128 #define BNXT_RE_GEN_P5_MAX_VF 64 129 130 struct bnxt_re_dev { 131 struct ib_device ibdev; 132 struct list_head list; 133 unsigned long flags; 134 #define BNXT_RE_FLAG_NETDEV_REGISTERED 0 135 #define BNXT_RE_FLAG_GOT_MSIX 2 136 #define BNXT_RE_FLAG_HAVE_L2_REF 3 137 #define BNXT_RE_FLAG_RCFW_CHANNEL_EN 4 138 #define BNXT_RE_FLAG_QOS_WORK_REG 5 139 #define BNXT_RE_FLAG_RESOURCES_ALLOCATED 7 140 #define BNXT_RE_FLAG_RESOURCES_INITIALIZED 8 141 #define BNXT_RE_FLAG_ISSUE_ROCE_STATS 29 142 struct net_device *netdev; 143 unsigned int version, major, minor; 144 struct bnxt_qplib_chip_ctx *chip_ctx; 145 struct bnxt_en_dev *en_dev; 146 struct bnxt_msix_entry msix_entries[BNXT_RE_MAX_MSIX]; 147 int num_msix; 148 149 int id; 150 151 struct delayed_work worker; 152 u8 cur_prio_map; 153 u8 active_speed; 154 u8 active_width; 155 156 /* FP Notification Queue (CQ & SRQ) */ 157 struct tasklet_struct nq_task; 158 159 /* RCFW Channel */ 160 struct bnxt_qplib_rcfw rcfw; 161 162 /* NQ */ 163 struct bnxt_qplib_nq nq[BNXT_RE_MAX_MSIX]; 164 165 /* Device Resources */ 166 struct bnxt_qplib_dev_attr dev_attr; 167 struct bnxt_qplib_ctx qplib_ctx; 168 struct bnxt_qplib_res qplib_res; 169 struct bnxt_qplib_dpi dpi_privileged; 170 171 atomic_t qp_count; 172 struct mutex qp_lock; /* protect qp list */ 173 struct list_head qp_list; 174 175 atomic_t cq_count; 176 atomic_t srq_count; 177 atomic_t mr_count; 178 atomic_t mw_count; 179 /* Max of 2 lossless traffic class supported per port */ 180 u16 cosq[2]; 181 182 /* QP for for handling QP1 packets */ 183 struct bnxt_re_gsi_context gsi_ctx; 184 atomic_t nq_alloc_cnt; 185 u32 is_virtfn; 186 u32 num_vfs; 187 struct bnxt_qplib_roce_stats stats; 188 }; 189 190 #define to_bnxt_re_dev(ptr, member) \ 191 container_of((ptr), struct bnxt_re_dev, member) 192 193 #define BNXT_RE_ROCE_V1_PACKET 0 194 #define BNXT_RE_ROCEV2_IPV4_PACKET 2 195 #define BNXT_RE_ROCEV2_IPV6_PACKET 3 196 197 static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev) 198 { 199 if (rdev) 200 return &rdev->ibdev.dev; 201 return NULL; 202 } 203 204 #endif 205