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 };
64 
65 struct bnxt_re_ah {
66 	struct ib_ah		ib_ah;
67 	struct bnxt_re_dev	*rdev;
68 	struct bnxt_qplib_ah	qplib_ah;
69 };
70 
71 struct bnxt_re_srq {
72 	struct ib_srq		ib_srq;
73 	struct bnxt_re_dev	*rdev;
74 	u32			srq_limit;
75 	struct bnxt_qplib_srq	qplib_srq;
76 	struct ib_umem		*umem;
77 	spinlock_t		lock;		/* protect srq */
78 };
79 
80 struct bnxt_re_qp {
81 	struct list_head	list;
82 	struct bnxt_re_dev	*rdev;
83 	struct ib_qp		ib_qp;
84 	spinlock_t		sq_lock;	/* protect sq */
85 	spinlock_t		rq_lock;	/* protect rq */
86 	struct bnxt_qplib_qp	qplib_qp;
87 	struct ib_umem		*sumem;
88 	struct ib_umem		*rumem;
89 	/* QP1 */
90 	u32			send_psn;
91 	struct ib_ud_header	qp1_hdr;
92 	struct bnxt_re_cq	*scq;
93 	struct bnxt_re_cq	*rcq;
94 };
95 
96 struct bnxt_re_cq {
97 	struct ib_cq		ib_cq;
98 	struct bnxt_re_dev	*rdev;
99 	spinlock_t              cq_lock;	/* protect cq */
100 	u16			cq_count;
101 	u16			cq_period;
102 	struct bnxt_qplib_cq	qplib_cq;
103 	struct bnxt_qplib_cqe	*cql;
104 #define MAX_CQL_PER_POLL	1024
105 	u32			max_cql;
106 	struct ib_umem		*umem;
107 };
108 
109 struct bnxt_re_mr {
110 	struct bnxt_re_dev	*rdev;
111 	struct ib_mr		ib_mr;
112 	struct ib_umem		*ib_umem;
113 	struct bnxt_qplib_mrw	qplib_mr;
114 	u32			npages;
115 	u64			*pages;
116 	struct bnxt_qplib_frpl	qplib_frpl;
117 };
118 
119 struct bnxt_re_frpl {
120 	struct bnxt_re_dev		*rdev;
121 	struct bnxt_qplib_frpl		qplib_frpl;
122 	u64				*page_list;
123 };
124 
125 struct bnxt_re_mw {
126 	struct bnxt_re_dev	*rdev;
127 	struct ib_mw		ib_mw;
128 	struct bnxt_qplib_mrw	qplib_mw;
129 };
130 
131 struct bnxt_re_ucontext {
132 	struct ib_ucontext      ib_uctx;
133 	struct bnxt_re_dev	*rdev;
134 	struct bnxt_qplib_dpi	dpi;
135 	void			*shpg;
136 	spinlock_t		sh_lock;	/* protect shpg */
137 };
138 
139 static inline u16 bnxt_re_get_swqe_size(int nsge)
140 {
141 	return sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
142 }
143 
144 static inline u16 bnxt_re_get_rwqe_size(int nsge)
145 {
146 	return sizeof(struct rq_wqe_hdr) + (nsge * sizeof(struct sq_sge));
147 }
148 
149 int bnxt_re_query_device(struct ib_device *ibdev,
150 			 struct ib_device_attr *ib_attr,
151 			 struct ib_udata *udata);
152 int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num,
153 		       struct ib_port_attr *port_attr);
154 int bnxt_re_get_port_immutable(struct ib_device *ibdev, u32 port_num,
155 			       struct ib_port_immutable *immutable);
156 void bnxt_re_query_fw_str(struct ib_device *ibdev, char *str);
157 int bnxt_re_query_pkey(struct ib_device *ibdev, u32 port_num,
158 		       u16 index, u16 *pkey);
159 int bnxt_re_del_gid(const struct ib_gid_attr *attr, void **context);
160 int bnxt_re_add_gid(const struct ib_gid_attr *attr, void **context);
161 int bnxt_re_query_gid(struct ib_device *ibdev, u32 port_num,
162 		      int index, union ib_gid *gid);
163 enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev,
164 					    u32 port_num);
165 int bnxt_re_alloc_pd(struct ib_pd *pd, struct ib_udata *udata);
166 int bnxt_re_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata);
167 int bnxt_re_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
168 		      struct ib_udata *udata);
169 int bnxt_re_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
170 int bnxt_re_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
171 int bnxt_re_destroy_ah(struct ib_ah *ah, u32 flags);
172 int bnxt_re_create_srq(struct ib_srq *srq,
173 		       struct ib_srq_init_attr *srq_init_attr,
174 		       struct ib_udata *udata);
175 int bnxt_re_modify_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr,
176 		       enum ib_srq_attr_mask srq_attr_mask,
177 		       struct ib_udata *udata);
178 int bnxt_re_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
179 int bnxt_re_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
180 int bnxt_re_post_srq_recv(struct ib_srq *srq, const struct ib_recv_wr *recv_wr,
181 			  const struct ib_recv_wr **bad_recv_wr);
182 struct ib_qp *bnxt_re_create_qp(struct ib_pd *pd,
183 				struct ib_qp_init_attr *qp_init_attr,
184 				struct ib_udata *udata);
185 int bnxt_re_modify_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
186 		      int qp_attr_mask, struct ib_udata *udata);
187 int bnxt_re_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
188 		     int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
189 int bnxt_re_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
190 int bnxt_re_post_send(struct ib_qp *qp, const struct ib_send_wr *send_wr,
191 		      const struct ib_send_wr **bad_send_wr);
192 int bnxt_re_post_recv(struct ib_qp *qp, const struct ib_recv_wr *recv_wr,
193 		      const struct ib_recv_wr **bad_recv_wr);
194 int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
195 		      struct ib_udata *udata);
196 int bnxt_re_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
197 int bnxt_re_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc);
198 int bnxt_re_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
199 struct ib_mr *bnxt_re_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
200 
201 int bnxt_re_map_mr_sg(struct ib_mr *ib_mr, struct scatterlist *sg, int sg_nents,
202 		      unsigned int *sg_offset);
203 struct ib_mr *bnxt_re_alloc_mr(struct ib_pd *ib_pd, enum ib_mr_type mr_type,
204 			       u32 max_num_sg);
205 int bnxt_re_dereg_mr(struct ib_mr *mr, struct ib_udata *udata);
206 struct ib_mw *bnxt_re_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type,
207 			       struct ib_udata *udata);
208 int bnxt_re_dealloc_mw(struct ib_mw *mw);
209 struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
210 				  u64 virt_addr, int mr_access_flags,
211 				  struct ib_udata *udata);
212 int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata);
213 void bnxt_re_dealloc_ucontext(struct ib_ucontext *context);
214 int bnxt_re_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
215 
216 unsigned long bnxt_re_lock_cqs(struct bnxt_re_qp *qp);
217 void bnxt_re_unlock_cqs(struct bnxt_re_qp *qp, unsigned long flags);
218 #endif /* __BNXT_RE_IB_VERBS_H__ */
219