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_COUNTER_POOL_SIZE,
47 	MLXSW_RES_ID_MAX_SPAN,
48 	MLXSW_RES_ID_COUNTER_SIZE_PACKETS_BYTES,
49 	MLXSW_RES_ID_COUNTER_SIZE_ROUTER_BASIC,
50 	MLXSW_RES_ID_MAX_SYSTEM_PORT,
51 	MLXSW_RES_ID_MAX_LAG,
52 	MLXSW_RES_ID_MAX_LAG_MEMBERS,
53 	MLXSW_RES_ID_MAX_BUFFER_SIZE,
54 	MLXSW_RES_ID_CELL_SIZE,
55 	MLXSW_RES_ID_ACL_MAX_TCAM_REGIONS,
56 	MLXSW_RES_ID_ACL_MAX_TCAM_RULES,
57 	MLXSW_RES_ID_ACL_MAX_REGIONS,
58 	MLXSW_RES_ID_ACL_MAX_GROUPS,
59 	MLXSW_RES_ID_ACL_MAX_GROUP_SIZE,
60 	MLXSW_RES_ID_ACL_FLEX_KEYS,
61 	MLXSW_RES_ID_ACL_MAX_ACTION_PER_RULE,
62 	MLXSW_RES_ID_ACL_ACTIONS_PER_SET,
63 	MLXSW_RES_ID_MAX_CPU_POLICERS,
64 	MLXSW_RES_ID_MAX_VRS,
65 	MLXSW_RES_ID_MAX_RIFS,
66 	MLXSW_RES_ID_MC_ERIF_LIST_ENTRIES,
67 	MLXSW_RES_ID_MAX_LPM_TREES,
68 
69 	/* Internal resources.
70 	 * Determined by the SW, not queried from the HW.
71 	 */
72 	MLXSW_RES_ID_KVD_SINGLE_SIZE,
73 	MLXSW_RES_ID_KVD_DOUBLE_SIZE,
74 	MLXSW_RES_ID_KVD_LINEAR_SIZE,
75 
76 	__MLXSW_RES_ID_MAX,
77 };
78 
79 static u16 mlxsw_res_ids[] = {
80 	[MLXSW_RES_ID_KVD_SIZE] = 0x1001,
81 	[MLXSW_RES_ID_KVD_SINGLE_MIN_SIZE] = 0x1002,
82 	[MLXSW_RES_ID_KVD_DOUBLE_MIN_SIZE] = 0x1003,
83 	[MLXSW_RES_ID_MAX_TRAP_GROUPS] = 0x2201,
84 	[MLXSW_RES_ID_COUNTER_POOL_SIZE] = 0x2410,
85 	[MLXSW_RES_ID_MAX_SPAN] = 0x2420,
86 	[MLXSW_RES_ID_COUNTER_SIZE_PACKETS_BYTES] = 0x2443,
87 	[MLXSW_RES_ID_COUNTER_SIZE_ROUTER_BASIC] = 0x2449,
88 	[MLXSW_RES_ID_MAX_SYSTEM_PORT] = 0x2502,
89 	[MLXSW_RES_ID_MAX_LAG] = 0x2520,
90 	[MLXSW_RES_ID_MAX_LAG_MEMBERS] = 0x2521,
91 	[MLXSW_RES_ID_MAX_BUFFER_SIZE] = 0x2802,	/* Bytes */
92 	[MLXSW_RES_ID_CELL_SIZE] = 0x2803,	/* Bytes */
93 	[MLXSW_RES_ID_ACL_MAX_TCAM_REGIONS] = 0x2901,
94 	[MLXSW_RES_ID_ACL_MAX_TCAM_RULES] = 0x2902,
95 	[MLXSW_RES_ID_ACL_MAX_REGIONS] = 0x2903,
96 	[MLXSW_RES_ID_ACL_MAX_GROUPS] = 0x2904,
97 	[MLXSW_RES_ID_ACL_MAX_GROUP_SIZE] = 0x2905,
98 	[MLXSW_RES_ID_ACL_FLEX_KEYS] = 0x2910,
99 	[MLXSW_RES_ID_ACL_MAX_ACTION_PER_RULE] = 0x2911,
100 	[MLXSW_RES_ID_ACL_ACTIONS_PER_SET] = 0x2912,
101 	[MLXSW_RES_ID_MAX_CPU_POLICERS] = 0x2A13,
102 	[MLXSW_RES_ID_MAX_VRS] = 0x2C01,
103 	[MLXSW_RES_ID_MAX_RIFS] = 0x2C02,
104 	[MLXSW_RES_ID_MC_ERIF_LIST_ENTRIES] = 0x2C10,
105 	[MLXSW_RES_ID_MAX_LPM_TREES] = 0x2C30,
106 };
107 
108 struct mlxsw_res {
109 	bool valid[__MLXSW_RES_ID_MAX];
110 	u64 values[__MLXSW_RES_ID_MAX];
111 };
112 
113 static inline bool mlxsw_res_valid(struct mlxsw_res *res,
114 				   enum mlxsw_res_id res_id)
115 {
116 	return res->valid[res_id];
117 }
118 
119 #define MLXSW_RES_VALID(res, short_res_id)			\
120 	mlxsw_res_valid(res, MLXSW_RES_ID_##short_res_id)
121 
122 static inline u64 mlxsw_res_get(struct mlxsw_res *res,
123 				enum mlxsw_res_id res_id)
124 {
125 	if (WARN_ON(!res->valid[res_id]))
126 		return 0;
127 	return res->values[res_id];
128 }
129 
130 #define MLXSW_RES_GET(res, short_res_id)			\
131 	mlxsw_res_get(res, MLXSW_RES_ID_##short_res_id)
132 
133 static inline void mlxsw_res_set(struct mlxsw_res *res,
134 				 enum mlxsw_res_id res_id, u64 value)
135 {
136 	res->valid[res_id] = true;
137 	res->values[res_id] = value;
138 }
139 
140 #define MLXSW_RES_SET(res, short_res_id, value)			\
141 	mlxsw_res_set(res, MLXSW_RES_ID_##short_res_id, value)
142 
143 static inline void mlxsw_res_parse(struct mlxsw_res *res, u16 id, u64 value)
144 {
145 	int i;
146 
147 	for (i = 0; i < ARRAY_SIZE(mlxsw_res_ids); i++) {
148 		if (mlxsw_res_ids[i] == id) {
149 			mlxsw_res_set(res, i, value);
150 			return;
151 		}
152 	}
153 }
154 
155 #endif
156