drivers/infiniband/hw/bnxt_re/bnxt_re.h

   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         u16                             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