1 /*
2  * drivers/net/ethernet/mellanox/mlxsw/resources.h
3  * Copyright (c) 2016-2017 Mellanox Technologies. All rights reserved.
4  * Copyright (c) 2016-2017 Jiri Pirko <jiri@mellanox.com>
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. Neither the names of the copyright holders nor the names of its
15  *    contributors may be used to endorse or promote products derived from
16  *    this software without specific prior written permission.
17  *
18  * Alternatively, this software may be distributed under the terms of the
19  * GNU General Public License ("GPL") version 2 as published by the Free
20  * Software Foundation.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 #ifndef _MLXSW_RESOURCES_H
36 #define _MLXSW_RESOURCES_H
37 
38 #include <linux/kernel.h>
39 #include <linux/types.h>
40 
41 enum mlxsw_res_id {
42 	MLXSW_RES_ID_KVD_SIZE,
43 	MLXSW_RES_ID_KVD_SINGLE_MIN_SIZE,
44 	MLXSW_RES_ID_KVD_DOUBLE_MIN_SIZE,
45 	MLXSW_RES_ID_MAX_TRAP_GROUPS,
46 	MLXSW_RES_ID_MAX_SPAN,
47 	MLXSW_RES_ID_MAX_SYSTEM_PORT,
48 	MLXSW_RES_ID_MAX_LAG,
49 	MLXSW_RES_ID_MAX_LAG_MEMBERS,
50 	MLXSW_RES_ID_MAX_BUFFER_SIZE,
51 	MLXSW_RES_ID_ACL_MAX_TCAM_REGIONS,
52 	MLXSW_RES_ID_ACL_MAX_TCAM_RULES,
53 	MLXSW_RES_ID_ACL_MAX_REGIONS,
54 	MLXSW_RES_ID_ACL_MAX_GROUPS,
55 	MLXSW_RES_ID_ACL_MAX_GROUP_SIZE,
56 	MLXSW_RES_ID_ACL_FLEX_KEYS,
57 	MLXSW_RES_ID_ACL_MAX_ACTION_PER_RULE,
58 	MLXSW_RES_ID_ACL_ACTIONS_PER_SET,
59 	MLXSW_RES_ID_MAX_CPU_POLICERS,
60 	MLXSW_RES_ID_MAX_VRS,
61 	MLXSW_RES_ID_MAX_RIFS,
62 
63 	/* Internal resources.
64 	 * Determined by the SW, not queried from the HW.
65 	 */
66 	MLXSW_RES_ID_KVD_SINGLE_SIZE,
67 	MLXSW_RES_ID_KVD_DOUBLE_SIZE,
68 	MLXSW_RES_ID_KVD_LINEAR_SIZE,
69 
70 	__MLXSW_RES_ID_MAX,
71 };
72 
73 static u16 mlxsw_res_ids[] = {
74 	[MLXSW_RES_ID_KVD_SIZE] = 0x1001,
75 	[MLXSW_RES_ID_KVD_SINGLE_MIN_SIZE] = 0x1002,
76 	[MLXSW_RES_ID_KVD_DOUBLE_MIN_SIZE] = 0x1003,
77 	[MLXSW_RES_ID_MAX_TRAP_GROUPS] = 0x2201,
78 	[MLXSW_RES_ID_MAX_SPAN] = 0x2420,
79 	[MLXSW_RES_ID_MAX_SYSTEM_PORT] = 0x2502,
80 	[MLXSW_RES_ID_MAX_LAG] = 0x2520,
81 	[MLXSW_RES_ID_MAX_LAG_MEMBERS] = 0x2521,
82 	[MLXSW_RES_ID_MAX_BUFFER_SIZE] = 0x2802,	/* Bytes */
83 	[MLXSW_RES_ID_ACL_MAX_TCAM_REGIONS] = 0x2901,
84 	[MLXSW_RES_ID_ACL_MAX_TCAM_RULES] = 0x2902,
85 	[MLXSW_RES_ID_ACL_MAX_REGIONS] = 0x2903,
86 	[MLXSW_RES_ID_ACL_MAX_GROUPS] = 0x2904,
87 	[MLXSW_RES_ID_ACL_MAX_GROUP_SIZE] = 0x2905,
88 	[MLXSW_RES_ID_ACL_FLEX_KEYS] = 0x2910,
89 	[MLXSW_RES_ID_ACL_MAX_ACTION_PER_RULE] = 0x2911,
90 	[MLXSW_RES_ID_ACL_ACTIONS_PER_SET] = 0x2912,
91 	[MLXSW_RES_ID_MAX_CPU_POLICERS] = 0x2A13,
92 	[MLXSW_RES_ID_MAX_VRS] = 0x2C01,
93 	[MLXSW_RES_ID_MAX_RIFS] = 0x2C02,
94 };
95 
96 struct mlxsw_res {
97 	bool valid[__MLXSW_RES_ID_MAX];
98 	u64 values[__MLXSW_RES_ID_MAX];
99 };
100 
101 static inline bool mlxsw_res_valid(struct mlxsw_res *res,
102 				   enum mlxsw_res_id res_id)
103 {
104 	return res->valid[res_id];
105 }
106 
107 #define MLXSW_RES_VALID(res, short_res_id)			\
108 	mlxsw_res_valid(res, MLXSW_RES_ID_##short_res_id)
109 
110 static inline u64 mlxsw_res_get(struct mlxsw_res *res,
111 				enum mlxsw_res_id res_id)
112 {
113 	if (WARN_ON(!res->valid[res_id]))
114 		return 0;
115 	return res->values[res_id];
116 }
117 
118 #define MLXSW_RES_GET(res, short_res_id)			\
119 	mlxsw_res_get(res, MLXSW_RES_ID_##short_res_id)
120 
121 static inline void mlxsw_res_set(struct mlxsw_res *res,
122 				 enum mlxsw_res_id res_id, u64 value)
123 {
124 	res->valid[res_id] = true;
125 	res->values[res_id] = value;
126 }
127 
128 #define MLXSW_RES_SET(res, short_res_id, value)			\
129 	mlxsw_res_set(res, MLXSW_RES_ID_##short_res_id, value)
130 
131 static inline void mlxsw_res_parse(struct mlxsw_res *res, u16 id, u64 value)
132 {
133 	int i;
134 
135 	for (i = 0; i < ARRAY_SIZE(mlxsw_res_ids); i++) {
136 		if (mlxsw_res_ids[i] == id) {
137 			mlxsw_res_set(res, i, value);
138 			return;
139 		}
140 	}
141 }
142 
143 #endif
144