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 unsigned int num_irq_vectors; 61 int admin_msix_vector_idx; 62 struct efa_irq admin_irq; 63 64 struct efa_stats stats; 65 66 /* Array of completion EQs */ 67 struct efa_eq *eqs; 68 unsigned int neqs; 69 70 /* Only stores CQs with interrupts enabled */ 71 struct xarray cqs_xa; 72 }; 73 74 struct efa_ucontext { 75 struct ib_ucontext ibucontext; 76 u16 uarn; 77 }; 78 79 struct efa_pd { 80 struct ib_pd ibpd; 81 u16 pdn; 82 }; 83 84 struct efa_mr_interconnect_info { 85 u16 recv_ic_id; 86 u16 rdma_read_ic_id; 87 u16 rdma_recv_ic_id; 88 u8 recv_ic_id_valid : 1; 89 u8 rdma_read_ic_id_valid : 1; 90 u8 rdma_recv_ic_id_valid : 1; 91 }; 92 93 struct efa_mr { 94 struct ib_mr ibmr; 95 struct ib_umem *umem; 96 struct efa_mr_interconnect_info ic_info; 97 }; 98 99 struct efa_cq { 100 struct ib_cq ibcq; 101 struct efa_ucontext *ucontext; 102 dma_addr_t dma_addr; 103 void *cpu_addr; 104 struct rdma_user_mmap_entry *mmap_entry; 105 struct rdma_user_mmap_entry *db_mmap_entry; 106 size_t size; 107 u16 cq_idx; 108 /* NULL when no interrupts requested */ 109 struct efa_eq *eq; 110 }; 111 112 struct efa_qp { 113 struct ib_qp ibqp; 114 dma_addr_t rq_dma_addr; 115 void *rq_cpu_addr; 116 size_t rq_size; 117 enum ib_qp_state state; 118 119 /* Used for saving mmap_xa entries */ 120 struct rdma_user_mmap_entry *sq_db_mmap_entry; 121 struct rdma_user_mmap_entry *llq_desc_mmap_entry; 122 struct rdma_user_mmap_entry *rq_db_mmap_entry; 123 struct rdma_user_mmap_entry *rq_mmap_entry; 124 125 u32 qp_handle; 126 u32 max_send_wr; 127 u32 max_recv_wr; 128 u32 max_send_sge; 129 u32 max_recv_sge; 130 u32 max_inline_data; 131 }; 132 133 struct efa_ah { 134 struct ib_ah ibah; 135 u16 ah; 136 /* dest_addr */ 137 u8 id[EFA_GID_SIZE]; 138 }; 139 140 struct efa_eq { 141 struct efa_com_eq eeq; 142 struct efa_irq irq; 143 }; 144 145 int efa_query_device(struct ib_device *ibdev, 146 struct ib_device_attr *props, 147 struct ib_udata *udata); 148 int efa_query_port(struct ib_device *ibdev, u32 port, 149 struct ib_port_attr *props); 150 int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 151 int qp_attr_mask, 152 struct ib_qp_init_attr *qp_init_attr); 153 int efa_query_gid(struct ib_device *ibdev, u32 port, int index, 154 union ib_gid *gid); 155 int efa_query_pkey(struct ib_device *ibdev, u32 port, u16 index, 156 u16 *pkey); 157 int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); 158 int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); 159 int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata); 160 int efa_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr, 161 struct ib_udata *udata); 162 int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); 163 int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 164 struct uverbs_attr_bundle *attrs); 165 struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, 166 u64 virt_addr, int access_flags, 167 struct ib_udata *udata); 168 struct ib_mr *efa_reg_user_mr_dmabuf(struct ib_pd *ibpd, u64 start, 169 u64 length, u64 virt_addr, 170 int fd, int access_flags, 171 struct ib_udata *udata); 172 int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata); 173 int efa_get_port_immutable(struct ib_device *ibdev, u32 port_num, 174 struct ib_port_immutable *immutable); 175 int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata); 176 void efa_dealloc_ucontext(struct ib_ucontext *ibucontext); 177 int efa_mmap(struct ib_ucontext *ibucontext, 178 struct vm_area_struct *vma); 179 void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry); 180 int efa_create_ah(struct ib_ah *ibah, 181 struct rdma_ah_init_attr *init_attr, 182 struct ib_udata *udata); 183 int efa_destroy_ah(struct ib_ah *ibah, u32 flags); 184 int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 185 int qp_attr_mask, struct ib_udata *udata); 186 enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev, 187 u32 port_num); 188 struct rdma_hw_stats *efa_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num); 189 struct rdma_hw_stats *efa_alloc_hw_device_stats(struct ib_device *ibdev); 190 int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, 191 u32 port_num, int index); 192 193 #endif /* _EFA_H_ */ 194