1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /*
3  * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
4  * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
5  * Copyright (c) 2004 Intel Corporation.  All rights reserved.
6  * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
7  * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
8  */
9 
10 #ifndef IB_SMI_H
11 #define IB_SMI_H
12 
13 #include <rdma/ib_mad.h>
14 
15 #define IB_SMP_DATA_SIZE			64
16 #define IB_SMP_MAX_PATH_HOPS			64
17 
18 struct ib_smp {
19 	u8	base_version;
20 	u8	mgmt_class;
21 	u8	class_version;
22 	u8	method;
23 	__be16	status;
24 	u8	hop_ptr;
25 	u8	hop_cnt;
26 	__be64	tid;
27 	__be16	attr_id;
28 	__be16	resv;
29 	__be32	attr_mod;
30 	__be64	mkey;
31 	__be16	dr_slid;
32 	__be16	dr_dlid;
33 	u8	reserved[28];
34 	u8	data[IB_SMP_DATA_SIZE];
35 	u8	initial_path[IB_SMP_MAX_PATH_HOPS];
36 	u8	return_path[IB_SMP_MAX_PATH_HOPS];
37 } __packed;
38 
39 #define IB_SMP_DIRECTION			cpu_to_be16(0x8000)
40 
41 /* Subnet management attributes */
42 #define IB_SMP_ATTR_NOTICE			cpu_to_be16(0x0002)
43 #define IB_SMP_ATTR_NODE_DESC			cpu_to_be16(0x0010)
44 #define IB_SMP_ATTR_NODE_INFO			cpu_to_be16(0x0011)
45 #define IB_SMP_ATTR_SWITCH_INFO			cpu_to_be16(0x0012)
46 #define IB_SMP_ATTR_GUID_INFO			cpu_to_be16(0x0014)
47 #define IB_SMP_ATTR_PORT_INFO			cpu_to_be16(0x0015)
48 #define IB_SMP_ATTR_PKEY_TABLE			cpu_to_be16(0x0016)
49 #define IB_SMP_ATTR_SL_TO_VL_TABLE		cpu_to_be16(0x0017)
50 #define IB_SMP_ATTR_VL_ARB_TABLE		cpu_to_be16(0x0018)
51 #define IB_SMP_ATTR_LINEAR_FORWARD_TABLE	cpu_to_be16(0x0019)
52 #define IB_SMP_ATTR_RANDOM_FORWARD_TABLE	cpu_to_be16(0x001A)
53 #define IB_SMP_ATTR_MCAST_FORWARD_TABLE		cpu_to_be16(0x001B)
54 #define IB_SMP_ATTR_SM_INFO			cpu_to_be16(0x0020)
55 #define IB_SMP_ATTR_VENDOR_DIAG			cpu_to_be16(0x0030)
56 #define IB_SMP_ATTR_LED_INFO			cpu_to_be16(0x0031)
57 #define IB_SMP_ATTR_VENDOR_MASK			cpu_to_be16(0xFF00)
58 
59 struct ib_port_info {
60 	__be64 mkey;
61 	__be64 gid_prefix;
62 	__be16 lid;
63 	__be16 sm_lid;
64 	__be32 cap_mask;
65 	__be16 diag_code;
66 	__be16 mkey_lease_period;
67 	u8 local_port_num;
68 	u8 link_width_enabled;
69 	u8 link_width_supported;
70 	u8 link_width_active;
71 	u8 linkspeed_portstate;			/* 4 bits, 4 bits */
72 	u8 portphysstate_linkdown;		/* 4 bits, 4 bits */
73 	u8 mkeyprot_resv_lmc;			/* 2 bits, 3, 3 */
74 	u8 linkspeedactive_enabled;		/* 4 bits, 4 bits */
75 	u8 neighbormtu_mastersmsl;		/* 4 bits, 4 bits */
76 	u8 vlcap_inittype;			/* 4 bits, 4 bits */
77 	u8 vl_high_limit;
78 	u8 vl_arb_high_cap;
79 	u8 vl_arb_low_cap;
80 	u8 inittypereply_mtucap;		/* 4 bits, 4 bits */
81 	u8 vlstallcnt_hoqlife;			/* 3 bits, 5 bits */
82 	u8 operationalvl_pei_peo_fpi_fpo;	/* 4 bits, 1, 1, 1, 1 */
83 	__be16 mkey_violations;
84 	__be16 pkey_violations;
85 	__be16 qkey_violations;
86 	u8 guid_cap;
87 	u8 clientrereg_resv_subnetto;		/* 1 bit, 2 bits, 5 */
88 	u8 resv_resptimevalue;			/* 3 bits, 5 bits */
89 	u8 localphyerrors_overrunerrors;	/* 4 bits, 4 bits */
90 	__be16 max_credit_hint;
91 	u8 resv;
92 	u8 link_roundtrip_latency[3];
93 };
94 
95 struct ib_node_info {
96 	u8 base_version;
97 	u8 class_version;
98 	u8 node_type;
99 	u8 num_ports;
100 	__be64 sys_guid;
101 	__be64 node_guid;
102 	__be64 port_guid;
103 	__be16 partition_cap;
104 	__be16 device_id;
105 	__be32 revision;
106 	u8 local_port_num;
107 	u8 vendor_id[3];
108 } __packed;
109 
110 struct ib_vl_weight_elem {
111 	u8      vl;     /* IB: VL is low 4 bits, upper 4 bits reserved */
112                         /* OPA: VL is low 5 bits, upper 3 bits reserved */
113 	u8      weight;
114 };
115 
116 static inline u8
ib_get_smp_direction(struct ib_smp * smp)117 ib_get_smp_direction(struct ib_smp *smp)
118 {
119 	return ((smp->status & IB_SMP_DIRECTION) == IB_SMP_DIRECTION);
120 }
121 
122 /*
123  * SM Trap/Notice numbers
124  */
125 #define IB_NOTICE_TRAP_LLI_THRESH	cpu_to_be16(129)
126 #define IB_NOTICE_TRAP_EBO_THRESH	cpu_to_be16(130)
127 #define IB_NOTICE_TRAP_FLOW_UPDATE	cpu_to_be16(131)
128 #define IB_NOTICE_TRAP_CAP_MASK_CHG	cpu_to_be16(144)
129 #define IB_NOTICE_TRAP_SYS_GUID_CHG	cpu_to_be16(145)
130 #define IB_NOTICE_TRAP_BAD_MKEY		cpu_to_be16(256)
131 #define IB_NOTICE_TRAP_BAD_PKEY		cpu_to_be16(257)
132 #define IB_NOTICE_TRAP_BAD_QKEY		cpu_to_be16(258)
133 
134 /*
135  * Other local changes flags (trap 144).
136  */
137 #define IB_NOTICE_TRAP_LSE_CHG		0x04	/* Link Speed Enable changed */
138 #define IB_NOTICE_TRAP_LWE_CHG		0x02	/* Link Width Enable changed */
139 #define IB_NOTICE_TRAP_NODE_DESC_CHG	0x01
140 
141 /*
142  * M_Key volation flags in dr_trunc_hop (trap 256).
143  */
144 #define IB_NOTICE_TRAP_DR_NOTICE	0x80
145 #define IB_NOTICE_TRAP_DR_TRUNC		0x40
146 
147 /**
148  * ib_init_query_mad - Initialize query MAD.
149  * @mad: MAD to initialize.
150  */
ib_init_query_mad(struct ib_smp * mad)151 static inline void ib_init_query_mad(struct ib_smp *mad)
152 {
153 	mad->base_version = IB_MGMT_BASE_VERSION;
154 	mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
155 	mad->class_version = 1;
156 	mad->method = IB_MGMT_METHOD_GET;
157 }
158 #endif /* IB_SMI_H */
159