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 #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
  72 struct 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
  79 struct 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
  92 struct 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
 157 static 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