drivers/infiniband/hw/efa/efa.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
   2 /*
   3  * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
   4  */
   5
   6 #ifndef _EFA_H_
   7 #define _EFA_H_
   8
   9 #include <linux/bitops.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/pci.h>
  12
  13 #include <rdma/efa-abi.h>
  14 #include <rdma/ib_verbs.h>
  15
  16 #include "efa_com_cmd.h"
  17
  18 #define DRV_MODULE_NAME         "efa"
  19 #define DEVICE_NAME             "Elastic Fabric Adapter (EFA)"
  20
  21 #define EFA_IRQNAME_SIZE        40
  22
  23 /* 1 for AENQ + ADMIN */
  24 #define EFA_NUM_MSIX_VEC                  1
  25 #define EFA_MGMNT_MSIX_VEC_IDX            0
  26
  27 struct efa_irq {
  28         irq_handler_t handler;
  29         void *data;
  30         int cpu;
  31         u32 vector;
  32         cpumask_t affinity_hint_mask;
  33         char name[EFA_IRQNAME_SIZE];
  34 };
  35
  36 struct efa_sw_stats {
  37         atomic64_t alloc_pd_err;
  38         atomic64_t create_qp_err;
  39         atomic64_t create_cq_err;
  40         atomic64_t reg_mr_err;
  41         atomic64_t alloc_ucontext_err;
  42         atomic64_t create_ah_err;
  43 };
  44
  45 /* Don't use anything other than atomic64 */
  46 struct efa_stats {
  47         struct efa_sw_stats sw_stats;
  48         atomic64_t keep_alive_rcvd;
  49 };
  50
  51 struct efa_dev {
  52         struct ib_device ibdev;
  53         struct efa_com_dev edev;
  54         struct pci_dev *pdev;
  55         struct efa_com_get_device_attr_result dev_attr;
  56
  57         u64 reg_bar_addr;
  58         u64 reg_bar_len;
  59         u64 mem_bar_addr;
  60         u64 mem_bar_len;
  61         u64 db_bar_addr;
  62         u64 db_bar_len;
  63
  64         int admin_msix_vector_idx;
  65         struct efa_irq admin_irq;
  66
  67         struct efa_stats stats;
  68 };
  69
  70 struct efa_ucontext {
  71         struct ib_ucontext ibucontext;
  72         u16 uarn;
  73 };
  74
  75 struct efa_pd {
  76         struct ib_pd ibpd;
  77         u16 pdn;
  78 };
  79
  80 struct efa_mr {
  81         struct ib_mr ibmr;
  82         struct ib_umem *umem;
  83 };
  84
  85 struct efa_cq {
  86         struct ib_cq ibcq;
  87         struct efa_ucontext *ucontext;
  88         dma_addr_t dma_addr;
  89         void *cpu_addr;
  90         struct rdma_user_mmap_entry *mmap_entry;
  91         size_t size;
  92         u16 cq_idx;
  93 };
  94
  95 struct efa_qp {
  96         struct ib_qp ibqp;
  97         dma_addr_t rq_dma_addr;
  98         void *rq_cpu_addr;
  99         size_t rq_size;
 100         enum ib_qp_state state;
 101
 102         /* Used for saving mmap_xa entries */
 103         struct rdma_user_mmap_entry *sq_db_mmap_entry;
 104         struct rdma_user_mmap_entry *llq_desc_mmap_entry;
 105         struct rdma_user_mmap_entry *rq_db_mmap_entry;
 106         struct rdma_user_mmap_entry *rq_mmap_entry;
 107
 108         u32 qp_handle;
 109         u32 max_send_wr;
 110         u32 max_recv_wr;
 111         u32 max_send_sge;
 112         u32 max_recv_sge;
 113         u32 max_inline_data;
 114 };
 115
 116 struct efa_ah {
 117         struct ib_ah ibah;
 118         u16 ah;
 119         /* dest_addr */
 120         u8 id[EFA_GID_SIZE];
 121 };
 122
 123 int efa_query_device(struct ib_device *ibdev,
 124                      struct ib_device_attr *props,
 125                      struct ib_udata *udata);
 126 int efa_query_port(struct ib_device *ibdev, u8 port,
 127                    struct ib_port_attr *props);
 128 int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
 129                  int qp_attr_mask,
 130                  struct ib_qp_init_attr *qp_init_attr);
 131 int efa_query_gid(struct ib_device *ibdev, u8 port, int index,
 132                   union ib_gid *gid);
 133 int efa_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 134                    u16 *pkey);
 135 int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
 136 void efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
 137 int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
 138 struct ib_qp *efa_create_qp(struct ib_pd *ibpd,
 139                             struct ib_qp_init_attr *init_attr,
 140                             struct ib_udata *udata);
 141 void efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata);
 142 int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 143                   struct ib_udata *udata);
 144 struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length,
 145                          u64 virt_addr, int access_flags,
 146                          struct ib_udata *udata);
 147 int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
 148 int efa_get_port_immutable(struct ib_device *ibdev, u8 port_num,
 149                            struct ib_port_immutable *immutable);
 150 int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata);
 151 void efa_dealloc_ucontext(struct ib_ucontext *ibucontext);
 152 int efa_mmap(struct ib_ucontext *ibucontext,
 153              struct vm_area_struct *vma);
 154 void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
 155 int efa_create_ah(struct ib_ah *ibah,
 156                   struct rdma_ah_attr *ah_attr,
 157                   u32 flags,
 158                   struct ib_udata *udata);
 159 void efa_destroy_ah(struct ib_ah *ibah, u32 flags);
 160 int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
 161                   int qp_attr_mask, struct ib_udata *udata);
 162 enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev,
 163                                          u8 port_num);
 164 struct rdma_hw_stats *efa_alloc_hw_stats(struct ib_device *ibdev, u8 port_num);
 165 int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats,
 166                      u8 port_num, int index);
 167
 168 #endif /* _EFA_H_ */