LXR linux/drivers/infiniband/hw/bnxt_re/bnxt

   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
  92struct bnxt_re_work {
  93        struct work_struct      work;
  94        unsigned long           event;
  95        struct bnxt_re_dev      *rdev;
  96        struct net_device       *vlan_dev;
  97};
  98
  99struct bnxt_re_sqp_entries {
 100        struct bnxt_qplib_sge sge;
 101        u64 wrid;
 102        /* For storing the actual qp1 cqe */
 103        struct bnxt_qplib_cqe cqe;
 104        struct bnxt_re_qp *qp1_qp;
 105};
 106
 107#define BNXT_RE_MIN_MSIX                2
 108#define BNXT_RE_MAX_MSIX                9
 109#define BNXT_RE_AEQ_IDX                 0
 110#define BNXT_RE_NQ_IDX                  1
 111
 112struct bnxt_re_dev {
 113        struct ib_device                ibdev;
 114        struct list_head                list;
 115        unsigned long                   flags;
 116#define BNXT_RE_FLAG_NETDEV_REGISTERED          0
 117#define BNXT_RE_FLAG_IBDEV_REGISTERED           1
 118#define BNXT_RE_FLAG_GOT_MSIX                   2
 119#define BNXT_RE_FLAG_HAVE_L2_REF                3
 120#define BNXT_RE_FLAG_RCFW_CHANNEL_EN            4
 121#define BNXT_RE_FLAG_QOS_WORK_REG               5
 122#define BNXT_RE_FLAG_RESOURCES_ALLOCATED        7
 123#define BNXT_RE_FLAG_RESOURCES_INITIALIZED      8
 124#define BNXT_RE_FLAG_ISSUE_ROCE_STATS          29
 125        struct net_device               *netdev;
 126        unsigned int                    version, major, minor;
 127        struct bnxt_qplib_chip_ctx      chip_ctx;
 128        struct bnxt_en_dev              *en_dev;
 129        struct bnxt_msix_entry          msix_entries[BNXT_RE_MAX_MSIX];
 130        int                             num_msix;
 131
 132        int                             id;
 133
 134        struct delayed_work             worker;
 135        u8                              cur_prio_map;
 136        u8                              active_speed;
 137        u8                              active_width;
 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                        sched_count;
 163        /* Max of 2 lossless traffic class supported per port */
 164        u16                             cosq[2];
 165
 166        /* QP for for handling QP1 packets */
 167        u32                             sqp_id;
 168        struct bnxt_re_qp               *qp1_sqp;
 169        struct bnxt_re_ah               *sqp_ah;
 170        struct bnxt_re_sqp_entries sqp_tbl[1024];
 171        atomic_t nq_alloc_cnt;
 172        u32 is_virtfn;
 173        u32 num_vfs;
 174        struct bnxt_qplib_roce_stats    stats;
 175};
 176
 177#define to_bnxt_re_dev(ptr, member)     \
 178        container_of((ptr), struct bnxt_re_dev, member)
 179
 180#define BNXT_RE_ROCE_V1_PACKET          0
 181#define BNXT_RE_ROCEV2_IPV4_PACKET      2
 182#define BNXT_RE_ROCEV2_IPV6_PACKET      3
 183
 184static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
 185{
 186        if (rdev)
 187                return  &rdev->ibdev.dev;
 188        return NULL;
 189}
 190
 191#endif
 192