1 /*
2 * Broadcom NetXtreme-E RoCE driver.
3 *
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
5 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
22 * distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Description: IB Verbs interpreter (header)
37 */
38
39 #ifndef __BNXT_RE_IB_VERBS_H__
40 #define __BNXT_RE_IB_VERBS_H__
41
42 struct bnxt_re_gid_ctx {
43 u32 idx;
44 u32 refcnt;
45 };
46
47 #define BNXT_RE_FENCE_BYTES 64
48 struct bnxt_re_fence_data {
49 u32 size;
50 u8 va[BNXT_RE_FENCE_BYTES];
51 dma_addr_t dma_addr;
52 struct bnxt_re_mr *mr;
53 struct ib_mw *mw;
54 struct bnxt_qplib_swqe bind_wqe;
55 u32 bind_rkey;
56 };
57
58 struct bnxt_re_pd {
59 struct ib_pd ib_pd;
60 struct bnxt_re_dev *rdev;
61 struct bnxt_qplib_pd qplib_pd;
62 struct bnxt_re_fence_data fence;
63 struct rdma_user_mmap_entry *pd_db_mmap;
64 struct rdma_user_mmap_entry *pd_wcdb_mmap;
65 };
66
67 struct bnxt_re_ah {
68 struct ib_ah ib_ah;
69 struct bnxt_re_dev *rdev;
70 struct bnxt_qplib_ah qplib_ah;
71 };
72
73 struct bnxt_re_srq {
74 struct ib_srq ib_srq;
75 struct bnxt_re_dev *rdev;
76 u32 srq_limit;
77 struct bnxt_qplib_srq qplib_srq;
78 struct ib_umem *umem;
79 spinlock_t lock; /* protect srq */
80 };
81
82 struct bnxt_re_qp {
83 struct ib_qp ib_qp;
84 struct list_head list;
85 struct bnxt_re_dev *rdev;
86 spinlock_t sq_lock; /* protect sq */
87 spinlock_t rq_lock; /* protect rq */
88 struct bnxt_qplib_qp qplib_qp;
89 struct ib_umem *sumem;
90 struct ib_umem *rumem;
91 /* QP1 */
92 u32 send_psn;
93 struct ib_ud_header qp1_hdr;
94 struct bnxt_re_cq *scq;
95 struct bnxt_re_cq *rcq;
96 };
97
98 struct bnxt_re_cq {
99 struct ib_cq ib_cq;
100 struct bnxt_re_dev *rdev;
101 spinlock_t cq_lock; /* protect cq */
102 u16 cq_count;
103 u16 cq_period;
104 struct bnxt_qplib_cq qplib_cq;
105 struct bnxt_qplib_cqe *cql;
106 #define MAX_CQL_PER_POLL 1024
107 u32 max_cql;
108 struct ib_umem *umem;
109 struct ib_umem *resize_umem;
110 int resize_cqe;
111 void *uctx_cq_page;
112 struct hlist_node hash_entry;
113 };
114
115 struct bnxt_re_mr {
116 struct bnxt_re_dev *rdev;
117 struct ib_mr ib_mr;
118 struct ib_umem *ib_umem;
119 struct bnxt_qplib_mrw qplib_mr;
120 u32 npages;
121 u64 *pages;
122 struct bnxt_qplib_frpl qplib_frpl;
123 };
124
125 struct bnxt_re_frpl {
126 struct bnxt_re_dev *rdev;
127 struct bnxt_qplib_frpl qplib_frpl;
128 u64 *page_list;
129 };
130
131 struct bnxt_re_mw {
132 struct bnxt_re_dev *rdev;
133 struct ib_mw ib_mw;
134 struct bnxt_qplib_mrw qplib_mw;
135 };
136
137 struct bnxt_re_ucontext {
138 struct ib_ucontext ib_uctx;
139 struct bnxt_re_dev *rdev;
140 struct bnxt_qplib_dpi dpi;
141 struct bnxt_qplib_dpi wcdpi;
142 void *shpg;
143 spinlock_t sh_lock; /* protect shpg */
144 struct rdma_user_mmap_entry *shpage_mmap;
145 u64 cmask;
146 };
147
148 enum bnxt_re_mmap_flag {
149 BNXT_RE_MMAP_SH_PAGE,
150 BNXT_RE_MMAP_UC_DB,
151 BNXT_RE_MMAP_WC_DB,
152 BNXT_RE_MMAP_DBR_PAGE,
153 BNXT_RE_MMAP_DBR_BAR,
154 BNXT_RE_MMAP_TOGGLE_PAGE,
155 };
156
157 struct bnxt_re_user_mmap_entry {
158 struct rdma_user_mmap_entry rdma_entry;
159 struct bnxt_re_ucontext *uctx;
160 u64 mem_offset;
161 u8 mmap_flag;
162 };
163
bnxt_re_get_swqe_size(int nsge)164 static inline u16 bnxt_re_get_swqe_size(int nsge)
165 {
166 return sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
167 }
168
bnxt_re_get_rwqe_size(int nsge)169 static inline u16 bnxt_re_get_rwqe_size(int nsge)
170 {
171 return sizeof(struct rq_wqe_hdr) + (nsge * sizeof(struct sq_sge));
172 }
173
bnxt_re_init_depth(u32 ent,struct bnxt_re_ucontext * uctx)174 static inline u32 bnxt_re_init_depth(u32 ent, struct bnxt_re_ucontext *uctx)
175 {
176 return uctx ? (uctx->cmask & BNXT_RE_UCNTX_CMASK_POW2_DISABLED) ?
177 ent : roundup_pow_of_two(ent) : ent;
178 }
179
180 int bnxt_re_query_device(struct ib_device *ibdev,
181 struct ib_device_attr *ib_attr,
182 struct ib_udata *udata);
183 int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num,
184 struct ib_port_attr *port_attr);
185 int bnxt_re_get_port_immutable(struct ib_device *ibdev, u32 port_num,
186 struct ib_port_immutable *immutable);
187 void bnxt_re_query_fw_str(struct ib_device *ibdev, char *str);
188 int bnxt_re_query_pkey(struct ib_device *ibdev, u32 port_num,
189 u16 index, u16 *pkey);
190 int bnxt_re_del_gid(const struct ib_gid_attr *attr, void **context);
191 int bnxt_re_add_gid(const struct ib_gid_attr *attr, void **context);
192 int bnxt_re_query_gid(struct ib_device *ibdev, u32 port_num,
193 int index, union ib_gid *gid);
194 enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev,
195 u32 port_num);
196 int bnxt_re_alloc_pd(struct ib_pd *pd, struct ib_udata *udata);
197 int bnxt_re_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata);
198 int bnxt_re_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
199 struct ib_udata *udata);
200 int bnxt_re_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
201 int bnxt_re_destroy_ah(struct ib_ah *ah, u32 flags);
202 int bnxt_re_create_srq(struct ib_srq *srq,
203 struct ib_srq_init_attr *srq_init_attr,
204 struct ib_udata *udata);
205 int bnxt_re_modify_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr,
206 enum ib_srq_attr_mask srq_attr_mask,
207 struct ib_udata *udata);
208 int bnxt_re_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
209 int bnxt_re_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
210 int bnxt_re_post_srq_recv(struct ib_srq *srq, const struct ib_recv_wr *recv_wr,
211 const struct ib_recv_wr **bad_recv_wr);
212 int bnxt_re_create_qp(struct ib_qp *qp, struct ib_qp_init_attr *qp_init_attr,
213 struct ib_udata *udata);
214 int bnxt_re_modify_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
215 int qp_attr_mask, struct ib_udata *udata);
216 int bnxt_re_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
217 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
218 int bnxt_re_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
219 int bnxt_re_post_send(struct ib_qp *qp, const struct ib_send_wr *send_wr,
220 const struct ib_send_wr **bad_send_wr);
221 int bnxt_re_post_recv(struct ib_qp *qp, const struct ib_recv_wr *recv_wr,
222 const struct ib_recv_wr **bad_recv_wr);
223 int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
224 struct ib_udata *udata);
225 int bnxt_re_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata);
226 int bnxt_re_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
227 int bnxt_re_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc);
228 int bnxt_re_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
229 struct ib_mr *bnxt_re_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
230
231 int bnxt_re_map_mr_sg(struct ib_mr *ib_mr, struct scatterlist *sg, int sg_nents,
232 unsigned int *sg_offset);
233 struct ib_mr *bnxt_re_alloc_mr(struct ib_pd *ib_pd, enum ib_mr_type mr_type,
234 u32 max_num_sg);
235 int bnxt_re_dereg_mr(struct ib_mr *mr, struct ib_udata *udata);
236 struct ib_mw *bnxt_re_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type,
237 struct ib_udata *udata);
238 int bnxt_re_dealloc_mw(struct ib_mw *mw);
239 struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
240 u64 virt_addr, int mr_access_flags,
241 struct ib_udata *udata);
242 struct ib_mr *bnxt_re_reg_user_mr_dmabuf(struct ib_pd *ib_pd, u64 start,
243 u64 length, u64 virt_addr,
244 int fd, int mr_access_flags,
245 struct ib_udata *udata);
246 int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata);
247 void bnxt_re_dealloc_ucontext(struct ib_ucontext *context);
248 int bnxt_re_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
249 void bnxt_re_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
250
251
252 unsigned long bnxt_re_lock_cqs(struct bnxt_re_qp *qp);
253 void bnxt_re_unlock_cqs(struct bnxt_re_qp *qp, unsigned long flags);
254 #endif /* __BNXT_RE_IB_VERBS_H__ */
255