1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
3 * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
9 #include <linux/bitops.h>
10 #include <linux/interrupt.h>
11 #include <linux/pci.h>
13 #include <rdma/efa-abi.h>
14 #include <rdma/ib_verbs.h>
16 #include "efa_com_cmd.h"
18 #define DRV_MODULE_NAME "efa"
19 #define DEVICE_NAME "Elastic Fabric Adapter (EFA)"
21 #define EFA_IRQNAME_SIZE 40
23 /* 1 for AENQ + ADMIN */
24 #define EFA_NUM_MSIX_VEC 1
25 #define EFA_MGMNT_MSIX_VEC_IDX 0
28 irq_handler_t handler;
32 cpumask_t affinity_hint_mask;
33 char name[EFA_IRQNAME_SIZE];
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;
45 /* Don't use anything other than atomic64 */
47 struct efa_sw_stats sw_stats;
48 atomic64_t keep_alive_rcvd;
52 struct ib_device ibdev;
53 struct efa_com_dev edev;
55 struct efa_com_get_device_attr_result dev_attr;
63 u8 addr[EFA_GID_SIZE];
66 int admin_msix_vector_idx;
67 struct efa_irq admin_irq;
69 struct efa_stats stats;
73 struct ib_ucontext ibucontext;
74 struct xarray mmap_xa;
91 struct efa_ucontext *ucontext;
100 dma_addr_t rq_dma_addr;
103 enum ib_qp_state state;
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,
126 struct ib_qp_init_attr *qp_init_attr);
127 int efa_query_gid(struct ib_device *ibdev, u8 port, int index,
129 int efa_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
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,
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,