1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ 2 /* 3 * Copyright 2018-2021 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 u32 irqn; 31 cpumask_t affinity_hint_mask; 32 char name[EFA_IRQNAME_SIZE]; 33 }; 34 35 /* Don't use anything other than atomic64 */ 36 struct efa_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 atomic64_t mmap_err; 44 atomic64_t keep_alive_rcvd; 45 }; 46 47 struct efa_dev { 48 struct ib_device ibdev; 49 struct efa_com_dev edev; 50 struct pci_dev *pdev; 51 struct efa_com_get_device_attr_result dev_attr; 52 53 u64 reg_bar_addr; 54 u64 reg_bar_len; 55 u64 mem_bar_addr; 56 u64 mem_bar_len; 57 u64 db_bar_addr; 58 u64 db_bar_len; 59 60 int admin_msix_vector_idx; 61 struct efa_irq admin_irq; 62 63 struct efa_stats stats; 64 }; 65 66 struct efa_ucontext { 67 struct ib_ucontext ibucontext; 68 u16 uarn; 69 }; 70 71 struct efa_pd { 72 struct ib_pd ibpd; 73 u16 pdn; 74 }; 75 76 struct efa_mr { 77 struct ib_mr ibmr; 78 struct ib_umem *umem; 79 }; 80 81 struct efa_cq { 82 struct ib_cq ibcq; 83 struct efa_ucontext *ucontext; 84 dma_addr_t dma_addr; 85 void *cpu_addr; 86 struct rdma_user_mmap_entry *mmap_entry; 87 size_t size; 88 u16 cq_idx; 89 }; 90 91 struct efa_qp { 92 struct ib_qp ibqp; 93 dma_addr_t rq_dma_addr; 94 void *rq_cpu_addr; 95 size_t rq_size; 96 enum ib_qp_state state; 97 98 /* Used for saving mmap_xa entries */ 99 struct rdma_user_mmap_entry *sq_db_mmap_entry; 100 struct rdma_user_mmap_entry *llq_desc_mmap_entry; 101 struct rdma_user_mmap_entry *rq_db_mmap_entry; 102 struct rdma_user_mmap_entry *rq_mmap_entry; 103 104 u32 qp_handle; 105 u32 max_send_wr; 106 u32 max_recv_wr; 107 u32 max_send_sge; 108 u32 max_recv_sge; 109 u32 max_inline_data; 110 }; 111 112 struct efa_ah { 113 struct ib_ah ibah; 114 u16 ah; 115 /* dest_addr */ 116 u8 id[EFA_GID_SIZE]; 117 }; 118 119 int efa_query_device(struct ib_device *ibdev, 120 struct ib_device_attr *props, 121 struct ib_udata *udata); 122 int efa_query_port(struct ib_device *ibdev, u32 port, 123 struct ib_port_attr *props); 124 int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 125 int qp_attr_mask, 126 struct ib_qp_init_attr *qp_init_attr); 127 int efa_query_gid(struct ib_device *ibdev, u32 port, int index, 128 union ib_gid *gid); 129 int efa_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 130 u16 *pkey); 131 int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); 132 int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); 133 int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata); 134 int efa_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr, 135 struct ib_udata *udata); 136 int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); 137 int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 138 struct ib_udata *udata); 139 struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, 140 u64 virt_addr, int access_flags, 141 struct ib_udata *udata); 142 int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata); 143 int efa_get_port_immutable(struct ib_device *ibdev, u32 port_num, 144 struct ib_port_immutable *immutable); 145 int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata); 146 void efa_dealloc_ucontext(struct ib_ucontext *ibucontext); 147 int efa_mmap(struct ib_ucontext *ibucontext, 148 struct vm_area_struct *vma); 149 void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry); 150 int efa_create_ah(struct ib_ah *ibah, 151 struct rdma_ah_init_attr *init_attr, 152 struct ib_udata *udata); 153 int efa_destroy_ah(struct ib_ah *ibah, u32 flags); 154 int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 155 int qp_attr_mask, struct ib_udata *udata); 156 enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev, 157 u32 port_num); 158 struct rdma_hw_stats *efa_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num); 159 struct rdma_hw_stats *efa_alloc_hw_device_stats(struct ib_device *ibdev); 160 int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, 161 u32 port_num, int index); 162 163 #endif /* _EFA_H_ */ 164