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_ */ 169