xref: /linux/drivers/infiniband/hw/qib/qib_mad.h (revision e5451c8f8330e03ad3cfa16048b4daf961af434f)
1 /*
2  * Copyright (c) 2012 Intel Corporation.  All rights reserved.
3  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
4  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
5  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  */
34 #ifndef _QIB_MAD_H
35 #define _QIB_MAD_H
36 
37 #include <rdma/ib_pma.h>
38 
39 #define IB_SMP_UNSUP_VERSION \
40 cpu_to_be16(IB_MGMT_MAD_STATUS_BAD_VERSION)
41 
42 #define IB_SMP_UNSUP_METHOD \
43 cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD)
44 
45 #define IB_SMP_UNSUP_METH_ATTR \
46 cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB)
47 
48 #define IB_SMP_INVALID_FIELD \
49 cpu_to_be16(IB_MGMT_MAD_STATUS_INVALID_ATTRIB_VALUE)
50 
51 #define IB_VLARB_LOWPRI_0_31    1
52 #define IB_VLARB_LOWPRI_32_63   2
53 #define IB_VLARB_HIGHPRI_0_31   3
54 #define IB_VLARB_HIGHPRI_32_63  4
55 
56 #define IB_PMA_PORT_COUNTERS_CONG       cpu_to_be16(0xFF00)
57 
58 struct ib_pma_portcounters_cong {
59 	u8 reserved;
60 	u8 reserved1;
61 	__be16 port_check_rate;
62 	__be16 symbol_error_counter;
63 	u8 link_error_recovery_counter;
64 	u8 link_downed_counter;
65 	__be16 port_rcv_errors;
66 	__be16 port_rcv_remphys_errors;
67 	__be16 port_rcv_switch_relay_errors;
68 	__be16 port_xmit_discards;
69 	u8 port_xmit_constraint_errors;
70 	u8 port_rcv_constraint_errors;
71 	u8 reserved2;
72 	u8 link_overrun_errors; /* LocalLink: 7:4, BufferOverrun: 3:0 */
73 	__be16 reserved3;
74 	__be16 vl15_dropped;
75 	__be64 port_xmit_data;
76 	__be64 port_rcv_data;
77 	__be64 port_xmit_packets;
78 	__be64 port_rcv_packets;
79 	__be64 port_xmit_wait;
80 	__be64 port_adr_events;
81 } __packed;
82 
83 #define IB_PMA_CONG_HW_CONTROL_TIMER            0x00
84 #define IB_PMA_CONG_HW_CONTROL_SAMPLE           0x01
85 
86 #define QIB_XMIT_RATE_UNSUPPORTED               0x0
87 #define QIB_XMIT_RATE_PICO                      0x7
88 /* number of 4nsec cycles equaling 2secs */
89 #define QIB_CONG_TIMER_PSINTERVAL               0x1DCD64EC
90 
91 #define IB_PMA_SEL_CONG_ALL                     0x01
92 #define IB_PMA_SEL_CONG_PORT_DATA               0x02
93 #define IB_PMA_SEL_CONG_XMIT                    0x04
94 #define IB_PMA_SEL_CONG_ROUTING                 0x08
95 
96 /*
97  * Congestion control class attributes
98  */
99 #define IB_CC_ATTR_CLASSPORTINFO			cpu_to_be16(0x0001)
100 #define IB_CC_ATTR_NOTICE				cpu_to_be16(0x0002)
101 #define IB_CC_ATTR_CONGESTION_INFO			cpu_to_be16(0x0011)
102 #define IB_CC_ATTR_CONGESTION_KEY_INFO			cpu_to_be16(0x0012)
103 #define IB_CC_ATTR_CONGESTION_LOG			cpu_to_be16(0x0013)
104 #define IB_CC_ATTR_SWITCH_CONGESTION_SETTING		cpu_to_be16(0x0014)
105 #define IB_CC_ATTR_SWITCH_PORT_CONGESTION_SETTING	cpu_to_be16(0x0015)
106 #define IB_CC_ATTR_CA_CONGESTION_SETTING		cpu_to_be16(0x0016)
107 #define IB_CC_ATTR_CONGESTION_CONTROL_TABLE		cpu_to_be16(0x0017)
108 #define IB_CC_ATTR_TIME_STAMP				cpu_to_be16(0x0018)
109 
110 /* generalizations for threshold values */
111 #define IB_CC_THRESHOLD_NONE 0x0
112 #define IB_CC_THRESHOLD_MIN  0x1
113 #define IB_CC_THRESHOLD_MAX  0xf
114 
115 /* CCA MAD header constants */
116 #define IB_CC_MAD_LOGDATA_LEN 32
117 #define IB_CC_MAD_MGMTDATA_LEN 192
118 
119 struct ib_cc_mad {
120 	u8	base_version;
121 	u8	mgmt_class;
122 	u8	class_version;
123 	u8	method;
124 	__be16	status;
125 	__be16	class_specific;
126 	__be64	tid;
127 	__be16	attr_id;
128 	__be16	resv;
129 	__be32	attr_mod;
130 	__be64 cckey;
131 
132 	/* For CongestionLog attribute only */
133 	u8 log_data[IB_CC_MAD_LOGDATA_LEN];
134 
135 	u8 mgmt_data[IB_CC_MAD_MGMTDATA_LEN];
136 } __packed;
137 
138 /*
139  * Congestion Control class portinfo capability mask bits
140  */
141 #define IB_CC_CPI_CM_TRAP_GEN		cpu_to_be16(1 << 0)
142 #define IB_CC_CPI_CM_GET_SET_NOTICE	cpu_to_be16(1 << 1)
143 #define IB_CC_CPI_CM_CAP2		cpu_to_be16(1 << 2)
144 #define IB_CC_CPI_CM_ENHANCEDPORT0_CC	cpu_to_be16(1 << 8)
145 
146 struct ib_cc_classportinfo_attr {
147 	u8 base_version;
148 	u8 class_version;
149 	__be16 cap_mask;
150 	u8 reserved[3];
151 	u8 resp_time_value;     /* only lower 5 bits */
152 	union ib_gid redirect_gid;
153 	__be32 redirect_tc_sl_fl;       /* 8, 4, 20 bits respectively */
154 	__be16 redirect_lid;
155 	__be16 redirect_pkey;
156 	__be32 redirect_qp;     /* only lower 24 bits */
157 	__be32 redirect_qkey;
158 	union ib_gid trap_gid;
159 	__be32 trap_tc_sl_fl;   /* 8, 4, 20 bits respectively */
160 	__be16 trap_lid;
161 	__be16 trap_pkey;
162 	__be32 trap_hl_qp;      /* 8, 24 bits respectively */
163 	__be32 trap_qkey;
164 } __packed;
165 
166 /* Congestion control traps */
167 #define IB_CC_TRAP_KEY_VIOLATION 0x0000
168 
169 struct ib_cc_trap_key_violation_attr {
170 	__be16 source_lid;
171 	u8 method;
172 	u8 reserved1;
173 	__be16 attrib_id;
174 	__be32 attrib_mod;
175 	__be32 qp;
176 	__be64 cckey;
177 	u8 sgid[16];
178 	u8 padding[24];
179 } __packed;
180 
181 /* Congestion info flags */
182 #define IB_CC_CI_FLAGS_CREDIT_STARVATION 0x1
183 #define IB_CC_TABLE_CAP_DEFAULT 31
184 
185 struct ib_cc_info_attr {
186 	__be16 congestion_info;
187 	u8  control_table_cap; /* Multiple of 64 entry unit CCTs */
188 } __packed;
189 
190 struct ib_cc_key_info_attr {
191 	__be64 cckey;
192 	u8  protect;
193 	__be16 lease_period;
194 	__be16 violations;
195 } __packed;
196 
197 #define IB_CC_CL_CA_LOGEVENTS_LEN 208
198 
199 struct ib_cc_log_attr {
200 	u8 log_type;
201 	u8 congestion_flags;
202 	__be16 threshold_event_counter;
203 	__be16 threshold_congestion_event_map;
204 	__be16 current_time_stamp;
205 	u8 log_events[IB_CC_CL_CA_LOGEVENTS_LEN];
206 } __packed;
207 
208 #define IB_CC_CLEC_SERVICETYPE_RC 0x0
209 #define IB_CC_CLEC_SERVICETYPE_UC 0x1
210 #define IB_CC_CLEC_SERVICETYPE_RD 0x2
211 #define IB_CC_CLEC_SERVICETYPE_UD 0x3
212 
213 struct ib_cc_log_event {
214 	u8 local_qp_cn_entry;
215 	u8 remote_qp_number_cn_entry[3];
216 	u8  sl_cn_entry:4;
217 	u8  service_type_cn_entry:4;
218 	__be32 remote_lid_cn_entry;
219 	__be32 timestamp_cn_entry;
220 } __packed;
221 
222 /* Sixteen congestion entries */
223 #define IB_CC_CCS_ENTRIES 16
224 
225 /* Port control flags */
226 #define IB_CC_CCS_PC_SL_BASED 0x01
227 
228 struct ib_cc_congestion_entry {
229 	u8 ccti_increase;
230 	__be16 ccti_timer;
231 	u8 trigger_threshold;
232 	u8 ccti_min; /* min CCTI for cc table */
233 } __packed;
234 
235 struct ib_cc_congestion_entry_shadow {
236 	u8 ccti_increase;
237 	u16 ccti_timer;
238 	u8 trigger_threshold;
239 	u8 ccti_min; /* min CCTI for cc table */
240 } __packed;
241 
242 struct ib_cc_congestion_setting_attr {
243 	__be16 port_control;
244 	__be16 control_map;
245 	struct ib_cc_congestion_entry entries[IB_CC_CCS_ENTRIES];
246 } __packed;
247 
248 struct ib_cc_congestion_setting_attr_shadow {
249 	u16 port_control;
250 	u16 control_map;
251 	struct ib_cc_congestion_entry_shadow entries[IB_CC_CCS_ENTRIES];
252 } __packed;
253 
254 #define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1
255 #define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1
256 
257 /* 64 Congestion Control table entries in a single MAD */
258 #define IB_CCT_ENTRIES 64
259 #define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2)
260 
261 struct ib_cc_table_entry {
262 	__be16 entry; /* shift:2, multiplier:14 */
263 };
264 
265 struct ib_cc_table_entry_shadow {
266 	u16 entry; /* shift:2, multiplier:14 */
267 };
268 
269 struct ib_cc_table_attr {
270 	__be16 ccti_limit; /* max CCTI for cc table */
271 	struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES];
272 } __packed;
273 
274 struct ib_cc_table_attr_shadow {
275 	u16 ccti_limit; /* max CCTI for cc table */
276 	struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES];
277 } __packed;
278 
279 #define CC_TABLE_SHADOW_MAX \
280 	(IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES)
281 
282 struct cc_table_shadow {
283 	u16 ccti_last_entry;
284 	struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX];
285 } __packed;
286 
287 /*
288  * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
289  * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
290  * We support 5 counters which only count the mandatory quantities.
291  */
292 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
293 #define COUNTER_MASK0_9 \
294 	cpu_to_be32(COUNTER_MASK(1, 0) | \
295 		    COUNTER_MASK(1, 1) | \
296 		    COUNTER_MASK(1, 2) | \
297 		    COUNTER_MASK(1, 3) | \
298 		    COUNTER_MASK(1, 4))
299 
300 #endif				/* _QIB_MAD_H */
301