1/*
2
3 * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses.  You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 *     Redistribution and use in source and binary forms, with or
12 *     without modification, are permitted provided that the following
13 *     conditions are met:
14 *
15 *	- Redistributions of source code must retain the above
16 *	  copyright notice, this list of conditions and the following
17 *	  disclaimer.
18 *
19 *	- Redistributions in binary form must reproduce the above
20 *	  copyright notice, this list of conditions and the following
21 *	  disclaimer in the documentation and/or other materials
22 *	  provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32
33 */
34#ifndef MLX4_CQ_H
35#define MLX4_CQ_H
36
37#include <linux/mlx4/device.h>
38
39#include <asm/byteorder.h>
40#include <asm/atomic.h>
41
42#include <linux/mlx4/doorbell.h>
43/*
44 #include <linux/types.h>
45
46 #include <linux/mlx4/device.h>
47 #include <linux/mlx4/doorbell.h>
48 */
49struct mlx4_cqe {
50	__be32 vlan_my_qpn;
51	__be32 immed_rss_invalid;
52	__be32 g_mlpath_rqpn;
53	union {
54		struct {
55			union {
56				struct {
57					__be16 sl_vid;
58					__be16 rlid;
59				};
60				__be32 timestamp_16_47;
61			};
62			__be16 status;
63			u8 ipv6_ext_mask;
64			u8 badfcs_enc;
65		};
66		struct {
67			__be16 reserved1;
68			u8 smac[6];
69		};
70	};
71	__be32 byte_cnt;
72	__be16 wqe_index;
73	__be16 checksum;
74	u8 reserved2[1];
75	__be16 timestamp_0_15;
76	u8 owner_sr_opcode;
77} __packed;
78
79struct mlx4_err_cqe {
80	__be32 my_qpn;
81	u32 reserved1[5];
82	__be16 wqe_index;
83	u8 vendor_err_syndrome;
84	u8 syndrome;
85	u8 reserved2[3];
86	u8 owner_sr_opcode;
87};
88/*
89 struct mlx4_ts_cqe {
90 __be32			vlan_my_qpn;
91 __be32			immed_rss_invalid;
92 __be32			g_mlpath_rqpn;
93 __be32			timestamp_hi;
94 __be16			status;
95 u8			ipv6_ext_mask;
96 u8			badfcs_enc;
97 __be32			byte_cnt;
98 __be16			wqe_index;
99 __be16			checksum;
100 u8			reserved;
101 __be16			timestamp_lo;
102 u8			owner_sr_opcode;
103 } __packed;
104 */
105enum {
106	MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29,
107	MLX4_CQE_QPN_MASK = 0xffffff,
108	MLX4_CQE_VID_MASK = 0xfff,
109};
110
111enum {
112	MLX4_CQE_OWNER_MASK = 0x80,
113	MLX4_CQE_IS_SEND_MASK = 0x40,
114	MLX4_CQE_OPCODE_MASK = 0x1f
115};
116
117enum {
118	MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
119	MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
120	MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
121	MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
122	MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
123	MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
124	MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
125	MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
126	MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
127	MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
128	MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
129	MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
130	MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
131};
132
133enum {
134	MLX4_CQE_STATUS_IPV4 = 1 << 6,
135	MLX4_CQE_STATUS_IPV4F = 1 << 7,
136	MLX4_CQE_STATUS_IPV6 = 1 << 8,
137	MLX4_CQE_STATUS_IPV4OPT = 1 << 9,
138	MLX4_CQE_STATUS_TCP = 1 << 10,
139	MLX4_CQE_STATUS_UDP = 1 << 11,
140	MLX4_CQE_STATUS_IPOK = 1 << 12,
141};
142
143enum {
144	MLX4_CQE_LLC = 1, MLX4_CQE_SNAP = 1 << 1, MLX4_CQE_BAD_FCS = 1 << 4,
145};
146
147static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
148		u8 /*__iomem*/*uar_page) {
149	__be32 doorbell[2];
150	u32 sn;
151	u32 ci;
152
153	sn = cq->arm_sn & 3;
154	ci = cq->cons_index & 0xffffff;
155
156	*cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
157
158	/** Make sure that the doorbell record in host memory is
159	 * written before ringing the doorbell via PCI MMIO.*/
160
161	wmb();
162
163	doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
164	doorbell[1] = cpu_to_be32(ci);
165
166	mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL);
167}
168
169static inline void mlx4_cq_set_ci(struct mlx4_cq *cq) {
170	*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
171}
172
173enum {
174	MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24, MLX4_CQ_DB_REQ_NOT = 2 << 24
175};
176/*
177 int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
178 u16 count, u16 period);
179 int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
180 int entries, struct mlx4_mtt *mtt);
181 */
182int mlx4_cq_ignore_overrun(struct mlx4_dev *dev, struct mlx4_cq *cq);
183
184#endif  /*MLX4_CQ_H*/
185