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 #include <linux/hashtable.h> 45 #define ROCE_DRV_MODULE_NAME "bnxt_re" 46 47 #define BNXT_RE_DESC "Broadcom NetXtreme-C/E RoCE Driver" 48 49 #define BNXT_RE_PAGE_SHIFT_1G (30) 50 #define BNXT_RE_PAGE_SIZE_SUPPORTED 0x7FFFF000 /* 4kb - 1G */ 51 52 #define BNXT_RE_MAX_MR_SIZE_LOW BIT_ULL(BNXT_RE_PAGE_SHIFT_1G) 53 #define BNXT_RE_MAX_MR_SIZE_HIGH BIT_ULL(39) 54 #define BNXT_RE_MAX_MR_SIZE BNXT_RE_MAX_MR_SIZE_HIGH 55 56 57 /* Number of MRs to reserve for PF, leaving remainder for VFs */ 58 #define BNXT_RE_RESVD_MR_FOR_PF (32 * 1024) 59 #define BNXT_RE_MAX_GID_PER_VF 128 60 61 /* 62 * Percentage of resources of each type reserved for PF. 63 * Remaining resources are divided equally among VFs. 64 * [0, 100] 65 */ 66 #define BNXT_RE_PCT_RSVD_FOR_PF 50 67 68 #define BNXT_RE_UD_QP_HW_STALL 0x400000 69 70 #define BNXT_RE_RQ_WQE_THRESHOLD 32 71 72 /* 73 * Setting the default ack delay value to 16, which means 74 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout)) 75 */ 76 77 #define BNXT_RE_DEFAULT_ACK_DELAY 16 78 79 struct bnxt_re_ring_attr { 80 dma_addr_t *dma_arr; 81 int pages; 82 int type; 83 u32 depth; 84 u32 lrid; /* Logical ring id */ 85 u8 mode; 86 }; 87 88 /* 89 * Data structure and defines to handle 90 * recovery 91 */ 92 #define BNXT_RE_PRE_RECOVERY_REMOVE 0x1 93 #define BNXT_RE_COMPLETE_REMOVE 0x2 94 #define BNXT_RE_POST_RECOVERY_INIT 0x4 95 #define BNXT_RE_COMPLETE_INIT 0x8 96 97 struct bnxt_re_sqp_entries { 98 struct bnxt_qplib_sge sge; 99 u64 wrid; 100 /* For storing the actual qp1 cqe */ 101 struct bnxt_qplib_cqe cqe; 102 struct bnxt_re_qp *qp1_qp; 103 }; 104 105 #define BNXT_RE_MAX_GSI_SQP_ENTRIES 1024 106 struct bnxt_re_gsi_context { 107 struct bnxt_re_qp *gsi_qp; 108 struct bnxt_re_qp *gsi_sqp; 109 struct bnxt_re_ah *gsi_sah; 110 struct bnxt_re_sqp_entries *sqp_tbl; 111 }; 112 113 struct bnxt_re_en_dev_info { 114 struct bnxt_en_dev *en_dev; 115 struct bnxt_re_dev *rdev; 116 }; 117 118 #define BNXT_RE_AEQ_IDX 0 119 #define BNXT_RE_NQ_IDX 1 120 #define BNXT_RE_GEN_P5_MAX_VF 64 121 122 struct bnxt_re_pacing { 123 u64 dbr_db_fifo_reg_off; 124 void *dbr_page; 125 u64 dbr_bar_addr; 126 u32 pacing_algo_th; 127 u32 do_pacing_save; 128 u32 dbq_pacing_time; /* ms */ 129 u32 dbr_def_do_pacing; 130 bool dbr_pacing; 131 struct mutex dbq_lock; /* synchronize db pacing algo */ 132 }; 133 134 #define BNXT_RE_MAX_DBR_DO_PACING 0xFFFF 135 #define BNXT_RE_DBR_PACING_TIME 5 /* ms */ 136 #define BNXT_RE_PACING_ALGO_THRESHOLD 250 /* Entries in DB FIFO */ 137 #define BNXT_RE_PACING_ALARM_TH_MULTIPLE 2 /* Multiple of pacing algo threshold */ 138 /* Default do_pacing value when there is no congestion */ 139 #define BNXT_RE_DBR_DO_PACING_NO_CONGESTION 0x7F /* 1 in 512 probability */ 140 141 #define BNXT_RE_MAX_FIFO_DEPTH_P5 0x2c00 142 #define BNXT_RE_MAX_FIFO_DEPTH_P7 0x8000 143 144 #define BNXT_RE_MAX_FIFO_DEPTH(ctx) \ 145 (bnxt_qplib_is_chip_gen_p7((ctx)) ? \ 146 BNXT_RE_MAX_FIFO_DEPTH_P7 :\ 147 BNXT_RE_MAX_FIFO_DEPTH_P5) 148 149 #define BNXT_RE_GRC_FIFO_REG_BASE 0x2000 150 151 #define BNXT_RE_MIN_MSIX 2 152 #define BNXT_RE_MAX_MSIX BNXT_MAX_ROCE_MSIX 153 struct bnxt_re_nq_record { 154 struct bnxt_msix_entry msix_entries[BNXT_RE_MAX_MSIX]; 155 struct bnxt_qplib_nq nq[BNXT_RE_MAX_MSIX]; 156 int num_msix; 157 /* serialize NQ access */ 158 struct mutex load_lock; 159 }; 160 161 #define MAX_CQ_HASH_BITS (16) 162 #define MAX_SRQ_HASH_BITS (16) 163 164 static inline bool bnxt_re_chip_gen_p7(u16 chip_num) 165 { 166 return (chip_num == CHIP_NUM_58818 || 167 chip_num == CHIP_NUM_57608); 168 } 169 170 struct bnxt_re_dev { 171 struct ib_device ibdev; 172 struct list_head list; 173 unsigned long flags; 174 #define BNXT_RE_FLAG_NETDEV_REGISTERED 0 175 #define BNXT_RE_FLAG_HAVE_L2_REF 3 176 #define BNXT_RE_FLAG_RCFW_CHANNEL_EN 4 177 #define BNXT_RE_FLAG_QOS_WORK_REG 5 178 #define BNXT_RE_FLAG_RESOURCES_ALLOCATED 7 179 #define BNXT_RE_FLAG_RESOURCES_INITIALIZED 8 180 #define BNXT_RE_FLAG_ERR_DEVICE_DETACHED 17 181 #define BNXT_RE_FLAG_ISSUE_ROCE_STATS 29 182 struct net_device *netdev; 183 struct auxiliary_device *adev; 184 unsigned int version, major, minor; 185 struct bnxt_qplib_chip_ctx *chip_ctx; 186 struct bnxt_en_dev *en_dev; 187 188 int id; 189 190 struct delayed_work worker; 191 u8 cur_prio_map; 192 193 /* RCFW Channel */ 194 struct bnxt_qplib_rcfw rcfw; 195 196 /* NQ record */ 197 struct bnxt_re_nq_record *nqr; 198 199 /* Device Resources */ 200 struct bnxt_qplib_dev_attr *dev_attr; 201 struct bnxt_qplib_ctx qplib_ctx; 202 struct bnxt_qplib_res qplib_res; 203 struct bnxt_qplib_dpi dpi_privileged; 204 struct bnxt_qplib_cq_coal_param cq_coalescing; 205 206 struct mutex qp_lock; /* protect qp list */ 207 struct list_head qp_list; 208 209 /* Max of 2 lossless traffic class supported per port */ 210 u16 cosq[2]; 211 212 /* QP for handling QP1 packets */ 213 struct bnxt_re_gsi_context gsi_ctx; 214 struct bnxt_re_stats stats; 215 atomic_t nq_alloc_cnt; 216 u32 is_virtfn; 217 u32 num_vfs; 218 struct bnxt_re_pacing pacing; 219 struct work_struct dbq_fifo_check_work; 220 struct delayed_work dbq_pacing_work; 221 DECLARE_HASHTABLE(cq_hash, MAX_CQ_HASH_BITS); 222 DECLARE_HASHTABLE(srq_hash, MAX_SRQ_HASH_BITS); 223 struct dentry *dbg_root; 224 struct dentry *qp_debugfs; 225 unsigned long event_bitmap; 226 struct bnxt_qplib_cc_param cc_param; 227 struct workqueue_struct *dcb_wq; 228 struct dentry *cc_config; 229 struct bnxt_re_dbg_cc_config_params *cc_config_params; 230 }; 231 232 #define to_bnxt_re_dev(ptr, member) \ 233 container_of((ptr), struct bnxt_re_dev, member) 234 235 #define BNXT_RE_ROCE_V1_PACKET 0 236 #define BNXT_RE_ROCEV2_IPV4_PACKET 2 237 #define BNXT_RE_ROCEV2_IPV6_PACKET 3 238 239 #define BNXT_RE_CHECK_RC(x) ((x) && ((x) != -ETIMEDOUT)) 240 void bnxt_re_pacing_alert(struct bnxt_re_dev *rdev); 241 242 int bnxt_re_assign_pma_port_counters(struct bnxt_re_dev *rdev, struct ib_mad *out_mad); 243 int bnxt_re_assign_pma_port_ext_counters(struct bnxt_re_dev *rdev, 244 struct ib_mad *out_mad); 245 246 static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev) 247 { 248 if (rdev) 249 return &rdev->ibdev.dev; 250 return NULL; 251 } 252 253 extern const struct uapi_definition bnxt_re_uapi_defs[]; 254 255 static inline void bnxt_re_set_pacing_dev_state(struct bnxt_re_dev *rdev) 256 { 257 rdev->qplib_res.pacing_data->dev_err_state = 258 test_bit(BNXT_RE_FLAG_ERR_DEVICE_DETACHED, &rdev->flags); 259 } 260 261 static inline int bnxt_re_read_context_allowed(struct bnxt_re_dev *rdev) 262 { 263 if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx) || 264 rdev->rcfw.res->cctx->hwrm_intf_ver < HWRM_VERSION_READ_CTX) 265 return -EOPNOTSUPP; 266 return 0; 267 } 268 269 #define BNXT_RE_CONTEXT_TYPE_QPC_SIZE_P5 1088 270 #define BNXT_RE_CONTEXT_TYPE_CQ_SIZE_P5 128 271 #define BNXT_RE_CONTEXT_TYPE_MRW_SIZE_P5 128 272 #define BNXT_RE_CONTEXT_TYPE_SRQ_SIZE_P5 192 273 274 #define BNXT_RE_CONTEXT_TYPE_QPC_SIZE_P7 1088 275 #define BNXT_RE_CONTEXT_TYPE_CQ_SIZE_P7 192 276 #define BNXT_RE_CONTEXT_TYPE_MRW_SIZE_P7 192 277 #define BNXT_RE_CONTEXT_TYPE_SRQ_SIZE_P7 192 278 279 #endif 280