1/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
2/*
3 * Copyright 2018-2025 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
26struct 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 */
36struct 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
47struct 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 u32 num_irq_vectors;
61 u32 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 u32 neqs;
69
70 /* Only stores CQs with interrupts enabled */
71 struct xarray cqs_xa;
72};
73
74struct efa_ucontext {
75 struct ib_ucontext ibucontext;
76 u16 uarn;
77};
78
79struct efa_pd {
80 struct ib_pd ibpd;
81 u16 pdn;
82};
83
84struct 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
93struct efa_mr {
94 struct ib_mr ibmr;
95 struct ib_umem *umem;
96 struct efa_mr_interconnect_info ic_info;
97};
98
99struct 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 struct ib_umem *umem;
111};
112
113struct efa_qp {
114 struct ib_qp ibqp;
115 dma_addr_t rq_dma_addr;
116 void *rq_cpu_addr;
117 size_t rq_size;
118 enum ib_qp_state state;
119
120 /* Used for saving mmap_xa entries */
121 struct rdma_user_mmap_entry *sq_db_mmap_entry;
122 struct rdma_user_mmap_entry *llq_desc_mmap_entry;
123 struct rdma_user_mmap_entry *rq_db_mmap_entry;
124 struct rdma_user_mmap_entry *rq_mmap_entry;
125
126 u32 qp_handle;
127 u32 max_send_wr;
128 u32 max_recv_wr;
129 u32 max_send_sge;
130 u32 max_recv_sge;
131 u32 max_inline_data;
132};
133
134struct efa_ah {
135 struct ib_ah ibah;
136 u16 ah;
137 /* dest_addr */
138 u8 id[EFA_GID_SIZE];
139};
140
141struct efa_eq {
142 struct efa_com_eq eeq;
143 struct efa_irq irq;
144};
145
146int efa_query_device(struct ib_device *ibdev,
147 struct ib_device_attr *props,
148 struct ib_udata *udata);
149int efa_query_port(struct ib_device *ibdev, u32 port,
150 struct ib_port_attr *props);
151int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
152 int qp_attr_mask,
153 struct ib_qp_init_attr *qp_init_attr);
154int efa_query_gid(struct ib_device *ibdev, u32 port, int index,
155 union ib_gid *gid);
156int efa_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
157 u16 *pkey);
158int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
159int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
160int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
161int efa_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr,
162 struct ib_udata *udata);
163int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata);
164int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
165 struct uverbs_attr_bundle *attrs);
166int efa_create_cq_umem(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
167 struct ib_umem *umem, struct uverbs_attr_bundle *attrs);
168struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length,
169 u64 virt_addr, int access_flags,
170 struct ib_dmah *dmah,
171 struct ib_udata *udata);
172struct ib_mr *efa_reg_user_mr_dmabuf(struct ib_pd *ibpd, u64 start,
173 u64 length, u64 virt_addr,
174 int fd, int access_flags,
175 struct ib_dmah *dmah,
176 struct uverbs_attr_bundle *attrs);
177int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
178int efa_get_port_immutable(struct ib_device *ibdev, u32 port_num,
179 struct ib_port_immutable *immutable);
180int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata);
181void efa_dealloc_ucontext(struct ib_ucontext *ibucontext);
182int efa_mmap(struct ib_ucontext *ibucontext,
183 struct vm_area_struct *vma);
184void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
185int efa_create_ah(struct ib_ah *ibah,
186 struct rdma_ah_init_attr *init_attr,
187 struct ib_udata *udata);
188int efa_destroy_ah(struct ib_ah *ibah, u32 flags);
189int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
190 int qp_attr_mask, struct ib_udata *udata);
191enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev,
192 u32 port_num);
193struct rdma_hw_stats *efa_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num);
194struct rdma_hw_stats *efa_alloc_hw_device_stats(struct ib_device *ibdev);
195int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats,
196 u32 port_num, int index);
197
198#endif /* _EFA_H_ */
199

source code of linux/drivers/infiniband/hw/efa/efa.h