blob: 0181e0a57cbfaa532e444d6c22ec44a134ef7fa4 [file] [log] [blame]
Roland Dreier225c7b12007-05-08 18:00:38 -07001/*
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_CQ_H
34#define MLX4_CQ_H
35
36#include <linux/types.h>
37
38#include <linux/mlx4/device.h>
39#include <linux/mlx4/doorbell.h>
40
41struct mlx4_cqe {
42 __be32 my_qpn;
43 __be32 immed_rss_invalid;
44 __be32 g_mlpath_rqpn;
45 u8 sl;
46 u8 reserved1;
47 __be16 rlid;
48 u32 reserved2;
49 __be32 byte_cnt;
50 __be16 wqe_index;
51 __be16 checksum;
52 u8 reserved3[3];
53 u8 owner_sr_opcode;
54};
55
56struct mlx4_err_cqe {
57 __be32 my_qpn;
58 u32 reserved1[5];
59 __be16 wqe_index;
60 u8 vendor_err_syndrome;
61 u8 syndrome;
62 u8 reserved2[3];
63 u8 owner_sr_opcode;
64};
65
66enum {
67 MLX4_CQE_OWNER_MASK = 0x80,
68 MLX4_CQE_IS_SEND_MASK = 0x40,
69 MLX4_CQE_OPCODE_MASK = 0x1f
70};
71
72enum {
73 MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
74 MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
75 MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
76 MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
77 MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
78 MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
79 MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
80 MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
81 MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
82 MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
83 MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
84 MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
85 MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
86};
87
88static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
89 void __iomem *uar_page,
90 spinlock_t *doorbell_lock)
91{
92 __be32 doorbell[2];
93 u32 sn;
94 u32 ci;
95
96 sn = cq->arm_sn & 3;
97 ci = cq->cons_index & 0xffffff;
98
99 *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
100
101 /*
102 * Make sure that the doorbell record in host memory is
103 * written before ringing the doorbell via PCI MMIO.
104 */
105 wmb();
106
107 doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
108 doorbell[1] = cpu_to_be32(ci);
109
110 mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
111}
112
113static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
114{
115 *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
116}
117
118enum {
119 MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24,
120 MLX4_CQ_DB_REQ_NOT = 2 << 24
121};
122
123#endif /* MLX4_CQ_H */