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_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
41 struct mlx4_cqe {
42 __be32 vlan_my_qpn;
43 __be32 immed_rss_invalid;
44 __be32 g_mlpath_rqpn;
45 union {
46 struct {
47 union {
48 struct {
49 __be16 sl_vid;
50 __be16 rlid;
51 };
52 __be32 timestamp_16_47;
53 };
54 __be16 status;
55 u8 ipv6_ext_mask;
56 u8 badfcs_enc;
57 };
58 struct {
59 __be16 reserved1;
60 u8 smac[6];
61 };
62 };
63 __be32 byte_cnt;
64 __be16 wqe_index;
65 __be16 checksum;
66 u8 reserved2[1];
67 __be16 timestamp_0_15;
68 u8 owner_sr_opcode;
69 } __packed;
70
71 struct mlx4_err_cqe {
72 __be32 my_qpn;
73 u32 reserved1[5];
74 __be16 wqe_index;
75 u8 vendor_err_syndrome;
76 u8 syndrome;
77 u8 reserved2[3];
78 u8 owner_sr_opcode;
79 };
80
81 struct mlx4_ts_cqe {
82 __be32 vlan_my_qpn;
83 __be32 immed_rss_invalid;
84 __be32 g_mlpath_rqpn;
85 __be32 timestamp_hi;
86 __be16 status;
87 u8 ipv6_ext_mask;
88 u8 badfcs_enc;
89 __be32 byte_cnt;
90 __be16 wqe_index;
91 __be16 checksum;
92 u8 reserved;
93 __be16 timestamp_lo;
94 u8 owner_sr_opcode;
95 } __packed;
96
97 enum {
98 MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29,
99 MLX4_CQE_QPN_MASK = 0xffffff,
100 MLX4_CQE_VID_MASK = 0xfff,
101 };
102
103 enum {
104 MLX4_CQE_OWNER_MASK = 0x80,
105 MLX4_CQE_IS_SEND_MASK = 0x40,
106 MLX4_CQE_OPCODE_MASK = 0x1f
107 };
108
109 enum {
110 MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
111 MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
112 MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
113 MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
114 MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
115 MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
116 MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
117 MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
118 MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
119 MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
120 MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
121 MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
122 MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
123 };
124
125 enum {
126 MLX4_CQE_STATUS_IPV4 = 1 << 6,
127 MLX4_CQE_STATUS_IPV4F = 1 << 7,
128 MLX4_CQE_STATUS_IPV6 = 1 << 8,
129 MLX4_CQE_STATUS_IPV4OPT = 1 << 9,
130 MLX4_CQE_STATUS_TCP = 1 << 10,
131 MLX4_CQE_STATUS_UDP = 1 << 11,
132 MLX4_CQE_STATUS_IPOK = 1 << 12,
133 };
134
135 enum {
136 MLX4_CQE_LLC = 1,
137 MLX4_CQE_SNAP = 1 << 1,
138 MLX4_CQE_BAD_FCS = 1 << 4,
139 };
140
mlx4_cq_arm(struct mlx4_cq * cq,u32 cmd,void __iomem * uar_page,spinlock_t * doorbell_lock)141 static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
142 void __iomem *uar_page,
143 spinlock_t *doorbell_lock)
144 {
145 __be32 doorbell[2];
146 u32 sn;
147 u32 ci;
148
149 sn = cq->arm_sn & 3;
150 ci = cq->cons_index & 0xffffff;
151
152 *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
153
154 /*
155 * Make sure that the doorbell record in host memory is
156 * written before ringing the doorbell via PCI MMIO.
157 */
158 wmb();
159
160 doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
161 doorbell[1] = cpu_to_be32(ci);
162
163 mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
164 }
165
mlx4_cq_set_ci(struct mlx4_cq * cq)166 static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
167 {
168 *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
169 }
170
171 enum {
172 MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24,
173 MLX4_CQ_DB_REQ_NOT = 2 << 24
174 };
175
176 int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
177 u16 count, u16 period);
178 int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
179 int entries, struct mlx4_mtt *mtt);
180 int mlx4_cq_ignore_overrun(struct mlx4_dev *dev, struct mlx4_cq *cq);
181 #endif /* MLX4_CQ_H */
182