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
42struct bnxt_re_gid_ctx {
43 u32 idx;
44 u32 refcnt;
45};
46
47#define BNXT_RE_FENCE_BYTES 64
48struct 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
58struct 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
67struct bnxt_re_ah {
68 struct ib_ah ib_ah;
69 struct bnxt_re_dev *rdev;
70 struct bnxt_qplib_ah qplib_ah;
71};
72
73struct 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 void *uctx_srq_page;
81 struct hlist_node hash_entry;
82};
83
84struct bnxt_re_qp {
85 struct ib_qp ib_qp;
86 struct list_head list;
87 struct bnxt_re_dev *rdev;
88 spinlock_t sq_lock; /* protect sq */
89 spinlock_t rq_lock; /* protect rq */
90 struct bnxt_qplib_qp qplib_qp;
91 struct ib_umem *sumem;
92 struct ib_umem *rumem;
93 /* QP1 */
94 u32 send_psn;
95 struct ib_ud_header qp1_hdr;
96 struct bnxt_re_cq *scq;
97 struct bnxt_re_cq *rcq;
98 struct dentry *dentry;
99};
100
101struct bnxt_re_cq {
102 struct ib_cq ib_cq;
103 struct bnxt_re_dev *rdev;
104 spinlock_t cq_lock; /* protect cq */
105 u16 cq_count;
106 u16 cq_period;
107 struct bnxt_qplib_cq qplib_cq;
108 struct bnxt_qplib_cqe *cql;
109#define MAX_CQL_PER_POLL 1024
110 u32 max_cql;
111 struct ib_umem *umem;
112 struct ib_umem *resize_umem;
113 int resize_cqe;
114 void *uctx_cq_page;
115 struct hlist_node hash_entry;
116};
117
118struct bnxt_re_mr {
119 struct bnxt_re_dev *rdev;
120 struct ib_mr ib_mr;
121 struct ib_umem *ib_umem;
122 struct bnxt_qplib_mrw qplib_mr;
123 u32 npages;
124 u64 *pages;
125 struct bnxt_qplib_frpl qplib_frpl;
126};
127
128struct bnxt_re_frpl {
129 struct bnxt_re_dev *rdev;
130 struct bnxt_qplib_frpl qplib_frpl;
131 u64 *page_list;
132};
133
134struct bnxt_re_mw {
135 struct bnxt_re_dev *rdev;
136 struct ib_mw ib_mw;
137 struct bnxt_qplib_mrw qplib_mw;
138};
139
140struct bnxt_re_ucontext {
141 struct ib_ucontext ib_uctx;
142 struct bnxt_re_dev *rdev;
143 struct bnxt_qplib_dpi dpi;
144 struct bnxt_qplib_dpi wcdpi;
145 void *shpg;
146 spinlock_t sh_lock; /* protect shpg */
147 struct rdma_user_mmap_entry *shpage_mmap;
148 u64 cmask;
149};
150
151enum bnxt_re_mmap_flag {
152 BNXT_RE_MMAP_SH_PAGE,
153 BNXT_RE_MMAP_UC_DB,
154 BNXT_RE_MMAP_WC_DB,
155 BNXT_RE_MMAP_DBR_PAGE,
156 BNXT_RE_MMAP_DBR_BAR,
157 BNXT_RE_MMAP_TOGGLE_PAGE,
158};
159
160struct bnxt_re_user_mmap_entry {
161 struct rdma_user_mmap_entry rdma_entry;
162 struct bnxt_re_ucontext *uctx;
163 u64 mem_offset;
164 u8 mmap_flag;
165};
166
167struct bnxt_re_flow {
168 struct ib_flow ib_flow;
169 struct bnxt_re_dev *rdev;
170};
171
172static inline u16 bnxt_re_get_swqe_size(int nsge)
173{
174 return sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
175}
176
177static inline u16 bnxt_re_get_rwqe_size(int nsge)
178{
179 return sizeof(struct rq_wqe_hdr) + (nsge * sizeof(struct sq_sge));
180}
181
182enum {
183 BNXT_RE_UCNTX_CAP_POW2_DISABLED = 0x1ULL,
184 BNXT_RE_UCNTX_CAP_VAR_WQE_ENABLED = 0x2ULL,
185};
186
187static inline u32 bnxt_re_init_depth(u32 ent, struct bnxt_re_ucontext *uctx)
188{
189 return uctx ? (uctx->cmask & BNXT_RE_UCNTX_CAP_POW2_DISABLED) ?
190 ent : roundup_pow_of_two(ent) : ent;
191}
192
193static inline bool bnxt_re_is_var_size_supported(struct bnxt_re_dev *rdev,
194 struct bnxt_re_ucontext *uctx)
195{
196 if (uctx)
197 return uctx->cmask & BNXT_RE_UCNTX_CAP_VAR_WQE_ENABLED;
198 else
199 return rdev->chip_ctx->modes.wqe_mode;
200}
201
202int bnxt_re_query_device(struct ib_device *ibdev,
203 struct ib_device_attr *ib_attr,
204 struct ib_udata *udata);
205int bnxt_re_modify_device(struct ib_device *ibdev,
206 int device_modify_mask,
207 struct ib_device_modify *device_modify);
208int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num,
209 struct ib_port_attr *port_attr);
210int bnxt_re_get_port_immutable(struct ib_device *ibdev, u32 port_num,
211 struct ib_port_immutable *immutable);
212void bnxt_re_query_fw_str(struct ib_device *ibdev, char *str);
213int bnxt_re_query_pkey(struct ib_device *ibdev, u32 port_num,
214 u16 index, u16 *pkey);
215int bnxt_re_del_gid(const struct ib_gid_attr *attr, void **context);
216int bnxt_re_add_gid(const struct ib_gid_attr *attr, void **context);
217int bnxt_re_query_gid(struct ib_device *ibdev, u32 port_num,
218 int index, union ib_gid *gid);
219enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev,
220 u32 port_num);
221int bnxt_re_alloc_pd(struct ib_pd *pd, struct ib_udata *udata);
222int bnxt_re_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata);
223int bnxt_re_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
224 struct ib_udata *udata);
225int bnxt_re_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
226int bnxt_re_destroy_ah(struct ib_ah *ah, u32 flags);
227int bnxt_re_create_srq(struct ib_srq *srq,
228 struct ib_srq_init_attr *srq_init_attr,
229 struct ib_udata *udata);
230int bnxt_re_modify_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr,
231 enum ib_srq_attr_mask srq_attr_mask,
232 struct ib_udata *udata);
233int bnxt_re_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
234int bnxt_re_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
235int bnxt_re_post_srq_recv(struct ib_srq *srq, const struct ib_recv_wr *recv_wr,
236 const struct ib_recv_wr **bad_recv_wr);
237int bnxt_re_create_qp(struct ib_qp *qp, struct ib_qp_init_attr *qp_init_attr,
238 struct ib_udata *udata);
239int bnxt_re_modify_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
240 int qp_attr_mask, struct ib_udata *udata);
241int bnxt_re_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
242 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
243int bnxt_re_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
244int bnxt_re_post_send(struct ib_qp *qp, const struct ib_send_wr *send_wr,
245 const struct ib_send_wr **bad_send_wr);
246int bnxt_re_post_recv(struct ib_qp *qp, const struct ib_recv_wr *recv_wr,
247 const struct ib_recv_wr **bad_recv_wr);
248int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
249 struct uverbs_attr_bundle *attrs);
250int bnxt_re_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata);
251int bnxt_re_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
252int bnxt_re_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc);
253int bnxt_re_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
254struct ib_mr *bnxt_re_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
255
256int bnxt_re_map_mr_sg(struct ib_mr *ib_mr, struct scatterlist *sg, int sg_nents,
257 unsigned int *sg_offset);
258struct ib_mr *bnxt_re_alloc_mr(struct ib_pd *ib_pd, enum ib_mr_type mr_type,
259 u32 max_num_sg);
260int bnxt_re_dereg_mr(struct ib_mr *mr, struct ib_udata *udata);
261struct ib_mw *bnxt_re_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type,
262 struct ib_udata *udata);
263int bnxt_re_dealloc_mw(struct ib_mw *mw);
264struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
265 u64 virt_addr, int mr_access_flags,
266 struct ib_dmah *dmah,
267 struct ib_udata *udata);
268struct ib_mr *bnxt_re_reg_user_mr_dmabuf(struct ib_pd *ib_pd, u64 start,
269 u64 length, u64 virt_addr,
270 int fd, int mr_access_flags,
271 struct ib_dmah *dmah,
272 struct uverbs_attr_bundle *attrs);
273int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata);
274void bnxt_re_dealloc_ucontext(struct ib_ucontext *context);
275struct ib_flow *bnxt_re_create_flow(struct ib_qp *ib_qp,
276 struct ib_flow_attr *attr,
277 struct ib_udata *udata);
278int bnxt_re_destroy_flow(struct ib_flow *flow_id);
279
280int bnxt_re_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
281void bnxt_re_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
282
283int bnxt_re_process_mad(struct ib_device *device, int process_mad_flags,
284 u32 port_num, const struct ib_wc *in_wc,
285 const struct ib_grh *in_grh,
286 const struct ib_mad *in_mad, struct ib_mad *out_mad,
287 size_t *out_mad_size, u16 *out_mad_pkey_index);
288
289static inline u32 __to_ib_port_num(u16 port_id)
290{
291 return (u32)port_id + 1;
292}
293
294unsigned long bnxt_re_lock_cqs(struct bnxt_re_qp *qp);
295void bnxt_re_unlock_cqs(struct bnxt_re_qp *qp, unsigned long flags);
296#endif /* __BNXT_RE_IB_VERBS_H__ */
297

source code of linux/drivers/infiniband/hw/bnxt_re/ib_verbs.h