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#define ROCE_DRV_MODULE_VERSION         "1.0.0"
  44
  45#define BNXT_RE_DESC    "Broadcom NetXtreme-C/E RoCE Driver"
  46
  47#define BNXT_RE_PAGE_SIZE_4K            BIT(12)
  48#define BNXT_RE_PAGE_SIZE_8K            BIT(13)
  49#define BNXT_RE_PAGE_SIZE_64K           BIT(16)
  50#define BNXT_RE_PAGE_SIZE_2M            BIT(21)
  51#define BNXT_RE_PAGE_SIZE_8M            BIT(23)
  52#define BNXT_RE_PAGE_SIZE_1G            BIT(30)
  53
  54#define BNXT_RE_MAX_MR_SIZE             BIT(30)
  55
  56#define BNXT_RE_MAX_QPC_COUNT           (64 * 1024)
  57#define BNXT_RE_MAX_MRW_COUNT           (64 * 1024)
  58#define BNXT_RE_MAX_SRQC_COUNT          (64 * 1024)
  59#define BNXT_RE_MAX_CQ_COUNT            (64 * 1024)
  60
  61#define BNXT_RE_UD_QP_HW_STALL          0x400000
  62
  63#define BNXT_RE_RQ_WQE_THRESHOLD        32
  64
  65/*
  66 * Setting the default ack delay value to 16, which means
  67 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout))
  68 */
  69
  70#define BNXT_RE_DEFAULT_ACK_DELAY       16
  71
  72struct bnxt_re_work {
  73        struct work_struct      work;
  74        unsigned long           event;
  75        struct bnxt_re_dev      *rdev;
  76        struct net_device       *vlan_dev;
  77};
  78
  79struct bnxt_re_sqp_entries {
  80        struct bnxt_qplib_sge sge;
  81        u64 wrid;
  82        /* For storing the actual qp1 cqe */
  83        struct bnxt_qplib_cqe cqe;
  84        struct bnxt_re_qp *qp1_qp;
  85};
  86
  87#define BNXT_RE_MIN_MSIX                2
  88#define BNXT_RE_MAX_MSIX                9
  89#define BNXT_RE_AEQ_IDX                 0
  90#define BNXT_RE_NQ_IDX                  1
  91
  92struct bnxt_re_dev {
  93        struct ib_device                ibdev;
  94        struct list_head                list;
  95        unsigned long                   flags;
  96#define BNXT_RE_FLAG_NETDEV_REGISTERED          0
  97#define BNXT_RE_FLAG_IBDEV_REGISTERED           1
  98#define BNXT_RE_FLAG_GOT_MSIX                   2
  99#define BNXT_RE_FLAG_HAVE_L2_REF                3
 100#define BNXT_RE_FLAG_RCFW_CHANNEL_EN            4
 101#define BNXT_RE_FLAG_QOS_WORK_REG               5
 102#define BNXT_RE_FLAG_TASK_IN_PROG               6
 103        struct net_device               *netdev;
 104        unsigned int                    version, major, minor;
 105        struct bnxt_en_dev              *en_dev;
 106        struct bnxt_msix_entry          msix_entries[BNXT_RE_MAX_MSIX];
 107        int                             num_msix;
 108
 109        int                             id;
 110
 111        struct delayed_work             worker;
 112        u8                              cur_prio_map;
 113        u8                              active_speed;
 114        u8                              active_width;
 115
 116        /* FP Notification Queue (CQ & SRQ) */
 117        struct tasklet_struct           nq_task;
 118
 119        /* RCFW Channel */
 120        struct bnxt_qplib_rcfw          rcfw;
 121
 122        /* NQ */
 123        struct bnxt_qplib_nq            nq[BNXT_RE_MAX_MSIX];
 124
 125        /* Device Resources */
 126        struct bnxt_qplib_dev_attr      dev_attr;
 127        struct bnxt_qplib_ctx           qplib_ctx;
 128        struct bnxt_qplib_res           qplib_res;
 129        struct bnxt_qplib_dpi           dpi_privileged;
 130
 131        atomic_t                        qp_count;
 132        struct mutex                    qp_lock;        /* protect qp list */
 133        struct list_head                qp_list;
 134
 135        atomic_t                        cq_count;
 136        atomic_t                        srq_count;
 137        atomic_t                        mr_count;
 138        atomic_t                        mw_count;
 139        /* Max of 2 lossless traffic class supported per port */
 140        u16                             cosq[2];
 141
 142        /* QP for for handling QP1 packets */
 143        u32                             sqp_id;
 144        struct bnxt_re_qp               *qp1_sqp;
 145        struct bnxt_re_ah               *sqp_ah;
 146        struct bnxt_re_sqp_entries sqp_tbl[1024];
 147        atomic_t nq_alloc_cnt;
 148};
 149
 150#define to_bnxt_re_dev(ptr, member)     \
 151        container_of((ptr), struct bnxt_re_dev, member)
 152
 153#define BNXT_RE_ROCE_V1_PACKET          0
 154#define BNXT_RE_ROCEV2_IPV4_PACKET      2
 155#define BNXT_RE_ROCEV2_IPV6_PACKET      3
 156
 157static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
 158{
 159        if (rdev)
 160                return  &rdev->ibdev.dev;
 161        return NULL;
 162}
 163
 164#endif
 165