tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#ifndef MLX4_QP_H
34#define MLX4_QP_H
35
36#include <linux/types.h>
37
38#include <linux/mlx4/device.h>
39
40#define MLX4_INVALID_LKEY 0x100
41
42enum mlx4_qp_optpar {
43 MLX4_QP_OPTPAR_ALT_ADDR_PATH = 1 << 0,
44 MLX4_QP_OPTPAR_RRE = 1 << 1,
45 MLX4_QP_OPTPAR_RAE = 1 << 2,
46 MLX4_QP_OPTPAR_RWE = 1 << 3,
47 MLX4_QP_OPTPAR_PKEY_INDEX = 1 << 4,
48 MLX4_QP_OPTPAR_Q_KEY = 1 << 5,
49 MLX4_QP_OPTPAR_RNR_TIMEOUT = 1 << 6,
50 MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH = 1 << 7,
51 MLX4_QP_OPTPAR_SRA_MAX = 1 << 8,
52 MLX4_QP_OPTPAR_RRA_MAX = 1 << 9,
53 MLX4_QP_OPTPAR_PM_STATE = 1 << 10,
54 MLX4_QP_OPTPAR_RETRY_COUNT = 1 << 12,
55 MLX4_QP_OPTPAR_RNR_RETRY = 1 << 13,
56 MLX4_QP_OPTPAR_ACK_TIMEOUT = 1 << 14,
57 MLX4_QP_OPTPAR_SCHED_QUEUE = 1 << 16
58};
59
60enum mlx4_qp_state {
61 MLX4_QP_STATE_RST = 0,
62 MLX4_QP_STATE_INIT = 1,
63 MLX4_QP_STATE_RTR = 2,
64 MLX4_QP_STATE_RTS = 3,
65 MLX4_QP_STATE_SQER = 4,
66 MLX4_QP_STATE_SQD = 5,
67 MLX4_QP_STATE_ERR = 6,
68 MLX4_QP_STATE_SQ_DRAINING = 7,
69 MLX4_QP_NUM_STATE
70};
71
72enum {
73 MLX4_QP_ST_RC = 0x0,
74 MLX4_QP_ST_UC = 0x1,
75 MLX4_QP_ST_RD = 0x2,
76 MLX4_QP_ST_UD = 0x3,
77 MLX4_QP_ST_MLX = 0x7
78};
79
80enum {
81 MLX4_QP_PM_MIGRATED = 0x3,
82 MLX4_QP_PM_ARMED = 0x0,
83 MLX4_QP_PM_REARM = 0x1
84};
85
86enum {
87 /* params1 */
88 MLX4_QP_BIT_SRE = 1 << 15,
89 MLX4_QP_BIT_SWE = 1 << 14,
90 MLX4_QP_BIT_SAE = 1 << 13,
91 /* params2 */
92 MLX4_QP_BIT_RRE = 1 << 15,
93 MLX4_QP_BIT_RWE = 1 << 14,
94 MLX4_QP_BIT_RAE = 1 << 13,
95 MLX4_QP_BIT_RIC = 1 << 4,
96};
97
98struct mlx4_qp_path {
99 u8 fl;
100 u8 reserved1[2];
101 u8 pkey_index;
102 u8 reserved2;
103 u8 grh_mylmc;
104 __be16 rlid;
105 u8 ackto;
106 u8 mgid_index;
107 u8 static_rate;
108 u8 hop_limit;
109 __be32 tclass_flowlabel;
110 u8 rgid[16];
111 u8 sched_queue;
112 u8 snooper_flags;
113 u8 reserved3[2];
114 u8 counter_index;
115 u8 reserved4[7];
116};
117
118struct mlx4_qp_context {
119 __be32 flags;
120 __be32 pd;
121 u8 mtu_msgmax;
122 u8 rq_size_stride;
123 u8 sq_size_stride;
124 u8 rlkey;
125 __be32 usr_page;
126 __be32 local_qpn;
127 __be32 remote_qpn;
128 struct mlx4_qp_path pri_path;
129 struct mlx4_qp_path alt_path;
130 __be32 params1;
131 u32 reserved1;
132 __be32 next_send_psn;
133 __be32 cqn_send;
134 u32 reserved2[2];
135 __be32 last_acked_psn;
136 __be32 ssn;
137 __be32 params2;
138 __be32 rnr_nextrecvpsn;
139 __be32 srcd;
140 __be32 cqn_recv;
141 __be64 db_rec_addr;
142 __be32 qkey;
143 __be32 srqn;
144 __be32 msn;
145 __be16 rq_wqe_counter;
146 __be16 sq_wqe_counter;
147 u32 reserved3[2];
148 __be32 param3;
149 __be32 nummmcpeers_basemkey;
150 u8 log_page_size;
151 u8 reserved4[2];
152 u8 mtt_base_addr_h;
153 __be32 mtt_base_addr_l;
154 u32 reserved5[10];
155};
156
157/* Which firmware version adds support for NEC (NoErrorCompletion) bit */
158#define MLX4_FW_VER_WQE_CTRL_NEC mlx4_fw_ver(2, 2, 232)
159
160enum {
161 MLX4_WQE_CTRL_NEC = 1 << 29,
162 MLX4_WQE_CTRL_FENCE = 1 << 6,
163 MLX4_WQE_CTRL_CQ_UPDATE = 3 << 2,
164 MLX4_WQE_CTRL_SOLICITED = 1 << 1,
165 MLX4_WQE_CTRL_IP_CSUM = 1 << 4,
166 MLX4_WQE_CTRL_TCP_UDP_CSUM = 1 << 5,
167};
168
169struct mlx4_wqe_ctrl_seg {
170 __be32 owner_opcode;
171 u8 reserved2[3];
172 u8 fence_size;
173 /*
174 * High 24 bits are SRC remote buffer; low 8 bits are flags:
175 * [7] SO (strong ordering)
176 * [5] TCP/UDP checksum
177 * [4] IP checksum
178 * [3:2] C (generate completion queue entry)
179 * [1] SE (solicited event)
180 */
181 __be32 srcrb_flags;
182 /*
183 * imm is immediate data for send/RDMA write w/ immediate;
184 * also invalidation key for send with invalidate; input
185 * modifier for WQEs on CCQs.
186 */
187 __be32 imm;
188};
189
190enum {
191 MLX4_WQE_MLX_VL15 = 1 << 17,
192 MLX4_WQE_MLX_SLR = 1 << 16
193};
194
195struct mlx4_wqe_mlx_seg {
196 u8 owner;
197 u8 reserved1[2];
198 u8 opcode;
199 u8 reserved2[3];
200 u8 size;
201 /*
202 * [17] VL15
203 * [16] SLR
204 * [15:12] static rate
205 * [11:8] SL
206 * [4] ICRC
207 * [3:2] C
208 * [0] FL (force loopback)
209 */
210 __be32 flags;
211 __be16 rlid;
212 u16 reserved3;
213};
214
215struct mlx4_wqe_datagram_seg {
216 __be32 av[8];
217 __be32 dqpn;
218 __be32 qkey;
219 __be32 reservd[2];
220};
221
222struct mlx4_lso_seg {
223 __be32 mss_hdr_size;
224 __be32 header[0];
225};
226
227struct mlx4_wqe_bind_seg {
228 __be32 flags1;
229 __be32 flags2;
230 __be32 new_rkey;
231 __be32 lkey;
232 __be64 addr;
233 __be64 length;
234};
235
236struct mlx4_wqe_fmr_seg {
237 __be32 flags;
238 __be32 mem_key;
239 __be64 buf_list;
240 __be64 start_addr;
241 __be64 reg_len;
242 __be32 offset;
243 __be32 page_size;
244 u32 reserved[2];
245};
246
247struct mlx4_wqe_fmr_ext_seg {
248 u8 flags;
249 u8 reserved;
250 __be16 app_mask;
251 __be16 wire_app_tag;
252 __be16 mem_app_tag;
253 __be32 wire_ref_tag_base;
254 __be32 mem_ref_tag_base;
255};
256
257struct mlx4_wqe_local_inval_seg {
258 u8 flags;
259 u8 reserved1[3];
260 __be32 mem_key;
261 u8 reserved2[3];
262 u8 guest_id;
263 __be64 pa;
264};
265
266struct mlx4_wqe_raddr_seg {
267 __be64 raddr;
268 __be32 rkey;
269 u32 reserved;
270};
271
272struct mlx4_wqe_atomic_seg {
273 __be64 swap_add;
274 __be64 compare;
275};
276
277struct mlx4_wqe_data_seg {
278 __be32 byte_count;
279 __be32 lkey;
280 __be64 addr;
281};
282
283enum {
284 MLX4_INLINE_ALIGN = 64,
285};
286
287struct mlx4_wqe_inline_seg {
288 __be32 byte_count;
289};
290
291int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
292 enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
293 struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar,
294 int sqd_event, struct mlx4_qp *qp);
295
296int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp,
297 struct mlx4_qp_context *context);
298
299int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
300 struct mlx4_qp_context *context,
301 struct mlx4_qp *qp, enum mlx4_qp_state *qp_state);
302
303static inline struct mlx4_qp *__mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)
304{
305 return radix_tree_lookup(&dev->qp_table_tree, qpn & (dev->caps.num_qps - 1));
306}
307
308void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp);
309
310#endif /* MLX4_QP_H */