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 u8 addr[EFA_GID_SIZE]; 64 u32 mtu; 65 66 int admin_msix_vector_idx; 67 struct efa_irq admin_irq; 68 69 struct efa_stats stats; 70 }; 71 72 struct efa_ucontext { 73 struct ib_ucontext ibucontext; 74 struct xarray mmap_xa; 75 u32 mmap_xa_page; 76 u16 uarn; 77 }; 78 79 struct efa_pd { 80 struct ib_pd ibpd; 81 u16 pdn; 82 }; 83 84 struct efa_mr { 85 struct ib_mr ibmr; 86 struct ib_umem *umem; 87 }; 88 89 struct efa_cq { 90 struct ib_cq ibcq; 91 struct efa_ucontext *ucontext; 92 dma_addr_t dma_addr; 93 void *cpu_addr; 94 size_t size; 95 u16 cq_idx; 96 }; 97 98 struct efa_qp { 99 struct ib_qp ibqp; 100 dma_addr_t rq_dma_addr; 101 void *rq_cpu_addr; 102 size_t rq_size; 103 enum ib_qp_state state; 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, u8 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, u8 port, int index, 128 union ib_gid *gid); 129 int efa_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 130 u16 *pkey); 131 int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); 132 void 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 struct ib_qp *efa_create_qp(struct ib_pd *ibpd, 135 struct ib_qp_init_attr *init_attr, 136 struct ib_udata *udata); 137 void efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); 138 int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 139 struct ib_udata *udata); 140 struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length, 141 u64 virt_addr, int access_flags, 142 struct ib_udata *udata); 143 int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata); 144 int efa_get_port_immutable(struct ib_device *ibdev, u8 port_num, 145 struct ib_port_immutable *immutable); 146 int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata); 147 void efa_dealloc_ucontext(struct ib_ucontext *ibucontext); 148 int efa_mmap(struct ib_ucontext *ibucontext, 149 struct vm_area_struct *vma); 150 int efa_create_ah(struct ib_ah *ibah, 151 struct rdma_ah_attr *ah_attr, 152 u32 flags, 153 struct ib_udata *udata); 154 void efa_destroy_ah(struct ib_ah *ibah, u32 flags); 155 int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 156 int qp_attr_mask, struct ib_udata *udata); 157 enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev, 158 u8 port_num); 159 160 #endif /* _EFA_H_ */ 161