2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #ifndef MLX5_CORE_CQ_H
34 #define MLX5_CORE_CQ_H
36 #include <rdma/ib_verbs.h>
37 #include <linux/mlx5/driver.h>
38 #include <linux/refcount.h>
45 struct mlx5_uars_page *uar;
47 struct completion free;
50 void (*comp) (struct mlx5_core_cq *);
51 void (*event) (struct mlx5_core_cq *, enum mlx5_event);
54 struct mlx5_rsc_debug *dbg;
57 struct list_head list;
58 void (*comp)(struct mlx5_core_cq *);
61 int reset_notify_added;
62 struct list_head reset_notify;
69 MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
70 MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
71 MLX5_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
72 MLX5_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
73 MLX5_CQE_SYNDROME_MW_BIND_ERR = 0x06,
74 MLX5_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
75 MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
76 MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
77 MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
78 MLX5_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
79 MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
80 MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
81 MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
85 MLX5_CQE_OWNER_MASK = 1,
87 MLX5_CQE_RESP_WR_IMM = 1,
88 MLX5_CQE_RESP_SEND = 2,
89 MLX5_CQE_RESP_SEND_IMM = 3,
90 MLX5_CQE_RESP_SEND_INV = 4,
91 MLX5_CQE_RESIZE_CQ = 5,
92 MLX5_CQE_SIG_ERR = 12,
93 MLX5_CQE_REQ_ERR = 13,
94 MLX5_CQE_RESP_ERR = 14,
95 MLX5_CQE_INVALID = 15,
99 MLX5_CQ_MODIFY_PERIOD = 1 << 0,
100 MLX5_CQ_MODIFY_COUNT = 1 << 1,
101 MLX5_CQ_MODIFY_OVERRUN = 1 << 2,
105 MLX5_CQ_OPMOD_RESIZE = 1,
106 MLX5_MODIFY_CQ_MASK_LOG_SIZE = 1 << 0,
107 MLX5_MODIFY_CQ_MASK_PG_OFFSET = 1 << 1,
108 MLX5_MODIFY_CQ_MASK_PG_SIZE = 1 << 2,
111 struct mlx5_cq_modify_params {
130 CQE_SIZE_128_PAD = 2,
133 #define MLX5_MAX_CQ_PERIOD (BIT(__mlx5_bit_sz(cqc, cq_period)) - 1)
134 #define MLX5_MAX_CQ_COUNT (BIT(__mlx5_bit_sz(cqc, cq_max_count)) - 1)
136 static inline int cqe_sz_to_mlx_sz(u8 size, int padding_128_en)
138 return padding_128_en ? CQE_SIZE_128_PAD :
139 size == 64 ? CQE_SIZE_64 : CQE_SIZE_128;
142 static inline void mlx5_cq_set_ci(struct mlx5_core_cq *cq)
144 *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
148 MLX5_CQ_DB_REQ_NOT_SOL = 1 << 24,
149 MLX5_CQ_DB_REQ_NOT = 0 << 24
152 static inline void mlx5_cq_arm(struct mlx5_core_cq *cq, u32 cmd,
153 void __iomem *uar_page,
161 ci = cons_index & 0xffffff;
163 *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
165 /* Make sure that the doorbell record in host memory is
166 * written before ringing the doorbell via PCI MMIO.
170 doorbell[0] = cpu_to_be32(sn << 28 | cmd | ci);
171 doorbell[1] = cpu_to_be32(cq->cqn);
173 mlx5_write64(doorbell, uar_page + MLX5_CQ_DOORBELL, NULL);
176 static inline void mlx5_cq_hold(struct mlx5_core_cq *cq)
178 refcount_inc(&cq->refcount);
181 static inline void mlx5_cq_put(struct mlx5_core_cq *cq)
183 if (refcount_dec_and_test(&cq->refcount))
187 int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
189 int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
190 int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
191 u32 *out, int outlen);
192 int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
194 int mlx5_core_modify_cq_moderation(struct mlx5_core_dev *dev,
195 struct mlx5_core_cq *cq, u16 cq_period,
197 static inline void mlx5_dump_err_cqe(struct mlx5_core_dev *dev,
198 struct mlx5_err_cqe *err_cqe)
200 print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, err_cqe,
201 sizeof(*err_cqe), false);
203 int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
204 void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
206 #endif /* MLX5_CORE_CQ_H */