diff options
Diffstat (limited to 'include/linux/mlx5/cq.h')
-rw-r--r-- | include/linux/mlx5/cq.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/include/linux/mlx5/cq.h b/include/linux/mlx5/cq.h new file mode 100644 index 000000000000..3db67f73d96d --- /dev/null +++ b/include/linux/mlx5/cq.h | |||
@@ -0,0 +1,165 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2013, Mellanox Technologies 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 MLX5_CORE_CQ_H | ||
34 | #define MLX5_CORE_CQ_H | ||
35 | |||
36 | #include <rdma/ib_verbs.h> | ||
37 | #include <linux/mlx5/driver.h> | ||
38 | |||
39 | |||
40 | struct mlx5_core_cq { | ||
41 | u32 cqn; | ||
42 | int cqe_sz; | ||
43 | __be32 *set_ci_db; | ||
44 | __be32 *arm_db; | ||
45 | atomic_t refcount; | ||
46 | struct completion free; | ||
47 | unsigned vector; | ||
48 | int irqn; | ||
49 | void (*comp) (struct mlx5_core_cq *); | ||
50 | void (*event) (struct mlx5_core_cq *, enum mlx5_event); | ||
51 | struct mlx5_uar *uar; | ||
52 | u32 cons_index; | ||
53 | unsigned arm_sn; | ||
54 | struct mlx5_rsc_debug *dbg; | ||
55 | int pid; | ||
56 | }; | ||
57 | |||
58 | |||
59 | enum { | ||
60 | MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01, | ||
61 | MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02, | ||
62 | MLX5_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04, | ||
63 | MLX5_CQE_SYNDROME_WR_FLUSH_ERR = 0x05, | ||
64 | MLX5_CQE_SYNDROME_MW_BIND_ERR = 0x06, | ||
65 | MLX5_CQE_SYNDROME_BAD_RESP_ERR = 0x10, | ||
66 | MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11, | ||
67 | MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12, | ||
68 | MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13, | ||
69 | MLX5_CQE_SYNDROME_REMOTE_OP_ERR = 0x14, | ||
70 | MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15, | ||
71 | MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16, | ||
72 | MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22, | ||
73 | }; | ||
74 | |||
75 | enum { | ||
76 | MLX5_CQE_OWNER_MASK = 1, | ||
77 | MLX5_CQE_REQ = 0, | ||
78 | MLX5_CQE_RESP_WR_IMM = 1, | ||
79 | MLX5_CQE_RESP_SEND = 2, | ||
80 | MLX5_CQE_RESP_SEND_IMM = 3, | ||
81 | MLX5_CQE_RESP_SEND_INV = 4, | ||
82 | MLX5_CQE_RESIZE_CQ = 0xff, /* TBD */ | ||
83 | MLX5_CQE_REQ_ERR = 13, | ||
84 | MLX5_CQE_RESP_ERR = 14, | ||
85 | }; | ||
86 | |||
87 | enum { | ||
88 | MLX5_CQ_MODIFY_RESEIZE = 0, | ||
89 | MLX5_CQ_MODIFY_MODER = 1, | ||
90 | MLX5_CQ_MODIFY_MAPPING = 2, | ||
91 | }; | ||
92 | |||
93 | struct mlx5_cq_modify_params { | ||
94 | int type; | ||
95 | union { | ||
96 | struct { | ||
97 | u32 page_offset; | ||
98 | u8 log_cq_size; | ||
99 | } resize; | ||
100 | |||
101 | struct { | ||
102 | } moder; | ||
103 | |||
104 | struct { | ||
105 | } mapping; | ||
106 | } params; | ||
107 | }; | ||
108 | |||
109 | enum { | ||
110 | CQE_SIZE_64 = 0, | ||
111 | CQE_SIZE_128 = 1, | ||
112 | }; | ||
113 | |||
114 | static inline int cqe_sz_to_mlx_sz(u8 size) | ||
115 | { | ||
116 | return size == 64 ? CQE_SIZE_64 : CQE_SIZE_128; | ||
117 | } | ||
118 | |||
119 | static inline void mlx5_cq_set_ci(struct mlx5_core_cq *cq) | ||
120 | { | ||
121 | *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff); | ||
122 | } | ||
123 | |||
124 | enum { | ||
125 | MLX5_CQ_DB_REQ_NOT_SOL = 1 << 24, | ||
126 | MLX5_CQ_DB_REQ_NOT = 0 << 24 | ||
127 | }; | ||
128 | |||
129 | static inline void mlx5_cq_arm(struct mlx5_core_cq *cq, u32 cmd, | ||
130 | void __iomem *uar_page, | ||
131 | spinlock_t *doorbell_lock) | ||
132 | { | ||
133 | __be32 doorbell[2]; | ||
134 | u32 sn; | ||
135 | u32 ci; | ||
136 | |||
137 | sn = cq->arm_sn & 3; | ||
138 | ci = cq->cons_index & 0xffffff; | ||
139 | |||
140 | *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci); | ||
141 | |||
142 | /* Make sure that the doorbell record in host memory is | ||
143 | * written before ringing the doorbell via PCI MMIO. | ||
144 | */ | ||
145 | wmb(); | ||
146 | |||
147 | doorbell[0] = cpu_to_be32(sn << 28 | cmd | ci); | ||
148 | doorbell[1] = cpu_to_be32(cq->cqn); | ||
149 | |||
150 | mlx5_write64(doorbell, uar_page + MLX5_CQ_DOORBELL, doorbell_lock); | ||
151 | } | ||
152 | |||
153 | int mlx5_init_cq_table(struct mlx5_core_dev *dev); | ||
154 | void mlx5_cleanup_cq_table(struct mlx5_core_dev *dev); | ||
155 | int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, | ||
156 | struct mlx5_create_cq_mbox_in *in, int inlen); | ||
157 | int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); | ||
158 | int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, | ||
159 | struct mlx5_query_cq_mbox_out *out); | ||
160 | int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, | ||
161 | int type, struct mlx5_cq_modify_params *params); | ||
162 | int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); | ||
163 | void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); | ||
164 | |||
165 | #endif /* MLX5_CORE_CQ_H */ | ||