1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/*
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef MLX4_CQ_H
#define MLX4_CQ_H
#include <linux/types.h>
#include <uapi/linux/if_ether.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>
struct mlx4_cqe {
__be32 vlan_my_qpn;
__be32 immed_rss_invalid;
__be32 g_mlpath_rqpn;
__be16 sl_vid;
union {
struct {
__be16 rlid;
__be16 status;
u8 ipv6_ext_mask;
u8 badfcs_enc;
};
u8 smac[ETH_ALEN];
};
__be32 byte_cnt;
__be16 wqe_index;
__be16 checksum;
u8 reserved[3];
u8 owner_sr_opcode;
};
struct mlx4_err_cqe {
__be32 my_qpn;
u32 reserved1[5];
__be16 wqe_index;
u8 vendor_err_syndrome;
u8 syndrome;
u8 reserved2[3];
u8 owner_sr_opcode;
};
struct mlx4_ts_cqe {
__be32 vlan_my_qpn;
__be32 immed_rss_invalid;
__be32 g_mlpath_rqpn;
__be32 timestamp_hi;
__be16 status;
u8 ipv6_ext_mask;
u8 badfcs_enc;
__be32 byte_cnt;
__be16 wqe_index;
__be16 checksum;
u8 reserved;
__be16 timestamp_lo;
u8 owner_sr_opcode;
} __packed;
enum {
MLX4_CQE_L2_TUNNEL_IPOK = 1 << 31,
MLX4_CQE_CVLAN_PRESENT_MASK = 1 << 29,
MLX4_CQE_SVLAN_PRESENT_MASK = 1 << 30,
MLX4_CQE_L2_TUNNEL = 1 << 27,
MLX4_CQE_L2_TUNNEL_CSUM = 1 << 26,
MLX4_CQE_L2_TUNNEL_IPV4 = 1 << 25,
MLX4_CQE_QPN_MASK = 0xffffff,
MLX4_CQE_VID_MASK = 0xfff,
};
enum {
MLX4_CQE_OWNER_MASK = 0x80,
MLX4_CQE_IS_SEND_MASK = 0x40,
MLX4_CQE_OPCODE_MASK = 0x1f
};
enum {
MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
};
enum {
MLX4_CQE_STATUS_IPV4 = 1 << 6,
MLX4_CQE_STATUS_IPV4F = 1 << 7,
MLX4_CQE_STATUS_IPV6 = 1 << 8,
MLX4_CQE_STATUS_IPV4OPT = 1 << 9,
MLX4_CQE_STATUS_TCP = 1 << 10,
MLX4_CQE_STATUS_UDP = 1 << 11,
MLX4_CQE_STATUS_IPOK = 1 << 12,
};
/* L4_CSUM is logically part of status, but has to checked against badfcs_enc */
enum {
MLX4_CQE_STATUS_L4_CSUM = 1 << 2,
};
enum {
MLX4_CQE_LLC = 1,
MLX4_CQE_SNAP = 1 << 1,
MLX4_CQE_BAD_FCS = 1 << 4,
};
#define MLX4_MAX_CQ_PERIOD (BIT(16) - 1)
#define MLX4_MAX_CQ_COUNT (BIT(16) - 1)
static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
void __iomem *uar_page,
spinlock_t *doorbell_lock)
{
__be32 doorbell[2];
u32 sn;
u32 ci;
sn = cq->arm_sn & 3;
ci = cq->cons_index & 0xffffff;
*cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
/*
* Make sure that the doorbell record in host memory is
* written before ringing the doorbell via PCI MMIO.
*/
wmb();
doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
doorbell[1] = cpu_to_be32(ci);
mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
}
static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
{
*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
}
enum {
MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24,
MLX4_CQ_DB_REQ_NOT = 2 << 24
};
int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
u16 count, u16 period);
int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
int entries, struct mlx4_mtt *mtt);
#endif /* MLX4_CQ_H */
|
