1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ 2 /* 3 * Copyright 2018-2024 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 #define EFA_MGMNT_MSIX_VEC_IDX 0 24 #define EFA_COMP_EQS_VEC_BASE 1 25 26 struct efa_irq { 27 irq_handler_t handler; 28 void *data; 29 u32 irqn; 30 u32 vector; 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 /* Array of completion EQs */ 66 struct efa_eq *eqs; 67 unsigned int neqs; 68 69 /* Only stores CQs with interrupts enabled */ 70 struct xarray cqs_xa; 71 }; 72 73 struct efa_ucontext { 74 struct ib_ucontext ibucontext; 75 u16 uarn; 76 }; 77 78 struct efa_pd { 79 struct ib_pd ibpd; 80 u16 pdn; 81 }; 82 83 struct efa_mr_interconnect_info { 84 u16 recv_ic_id; 85 u16 rdma_read_ic_id; 86 u16 rdma_recv_ic_id; 87 u8 recv_ic_id_valid : 1; 88 u8 rdma_read_ic_id_valid : 1; 89 u8 rdma_recv_ic_id_valid : 1; 90 }; 91 92 struct efa_mr { 93 struct ib_mr ibmr; 94 struct ib_umem *umem; 95 struct efa_mr_interconnect_info ic_info; 96 }; 97 98 struct efa_cq { 99 struct ib_cq ibcq; 100 struct efa_ucontext *ucontext; 101 dma_addr_t dma_addr; 102 void *cpu_addr; 103 struct rdma_user_mmap_entry *mmap_entry; 104 struct rdma_user_mmap_entry *db_mmap_entry; 105 size_t size; 106 u16 cq_idx; 107 /* NULL when no interrupts requested */ 108 struct efa_eq *eq; 109 }; 110 111 struct efa_qp { 112 struct ib_qp ibqp; 113 dma_addr_t rq_dma_addr; 114 void *rq_cpu_addr; 115 size_t rq_size; 116 enum ib_qp_state state; 117 118 /* Used for saving mmap_xa entries */ 119 struct rdma_user_mmap_entry *sq_db_mmap_entry; 120 struct rdma_user_mmap_entry *llq_desc_mmap_entry; 121 struct rdma_user_mmap_entry *rq_db_mmap_entry; 122 struct rdma_user_mmap_entry *rq_mmap_entry; 123 124 u32 qp_handle; 125 u32 max_send_wr; 126 u32 max_recv_wr; 127 u32 max_send_sge; 128 u32 max_recv_sge; 129 u32 max_inline_data; 130 }; 131 132 struct efa_ah { 133 struct ib_ah ibah; 134 u16 ah; 135 /* dest_addr */ 136 u8 id[EFA_GID_SIZE]; 137 }; 138 139 struct efa_eq { 140 struct efa_com_eq eeq; 141 struct efa_irq irq; 142 }; 143 144 int efa_query_device(struct ib_device *ibdev, 145 struct ib_device_attr *props, 146 struct ib_udata *udata); 147 int efa_query_port(struct ib_device *ibdev, u32 port, 148 struct ib_port_attr *props); 149 int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 150 int qp_attr_mask, 151 struct ib_qp_init_attr *qp_init_attr); 152 int efa_query_gid(struct ib_device *ibdev, u32 port, int index, 153 union ib_gid *gid); 154 int efa_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 155 u16 *pkey); 156 int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); 157 int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); 158 int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata); 159 int efa_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr, 160 struct ib_udata *udata); 161 int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); 162 int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 163 struct ib_udata *udata); 164 struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, 165 u64 virt_addr, int access_flags, 166 struct ib_udata *udata); 167 struct ib_mr *efa_reg_user_mr_dmabuf(struct ib_pd *ibpd, u64 start, 168 u64 length, u64 virt_addr, 169 int fd, int access_flags, 170 struct ib_udata *udata); 171 int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata); 172 int efa_get_port_immutable(struct ib_device *ibdev, u32 port_num, 173 struct ib_port_immutable *immutable); 174 int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata); 175 void efa_dealloc_ucontext(struct ib_ucontext *ibucontext); 176 int efa_mmap(struct ib_ucontext *ibucontext, 177 struct vm_area_struct *vma); 178 void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry); 179 int efa_create_ah(struct ib_ah *ibah, 180 struct rdma_ah_init_attr *init_attr, 181 struct ib_udata *udata); 182 int efa_destroy_ah(struct ib_ah *ibah, u32 flags); 183 int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 184 int qp_attr_mask, struct ib_udata *udata); 185 enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev, 186 u32 port_num); 187 struct rdma_hw_stats *efa_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num); 188 struct rdma_hw_stats *efa_alloc_hw_device_stats(struct ib_device *ibdev); 189 int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, 190 u32 port_num, int index); 191 192 #endif /* _EFA_H_ */ 193