xref: /openbmc/linux/drivers/infiniband/hw/hfi1/mad.h (revision ca481398)
1 /*
2  * Copyright(c) 2015 - 2017 Intel Corporation.
3  *
4  * This file is provided under a dual BSD/GPLv2 license.  When using or
5  * redistributing this file, you may do so under either license.
6  *
7  * GPL LICENSE SUMMARY
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of version 2 of the GNU General Public License as
11  * published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * BSD LICENSE
19  *
20  * Redistribution and use in source and binary forms, with or without
21  * modification, are permitted provided that the following conditions
22  * are met:
23  *
24  *  - Redistributions of source code must retain the above copyright
25  *    notice, this list of conditions and the following disclaimer.
26  *  - Redistributions in binary form must reproduce the above copyright
27  *    notice, this list of conditions and the following disclaimer in
28  *    the documentation and/or other materials provided with the
29  *    distribution.
30  *  - Neither the name of Intel Corporation nor the names of its
31  *    contributors may be used to endorse or promote products derived
32  *    from this software without specific prior written permission.
33  *
34  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  */
47 #ifndef _HFI1_MAD_H
48 #define _HFI1_MAD_H
49 
50 #include <rdma/ib_pma.h>
51 #include <rdma/opa_smi.h>
52 #include <rdma/opa_port_info.h>
53 #include "opa_compat.h"
54 
55 /*
56  * OPA Traps
57  */
58 #define OPA_TRAP_GID_NOW_IN_SERVICE             cpu_to_be16(64)
59 #define OPA_TRAP_GID_OUT_OF_SERVICE             cpu_to_be16(65)
60 #define OPA_TRAP_ADD_MULTICAST_GROUP            cpu_to_be16(66)
61 #define OPA_TRAL_DEL_MULTICAST_GROUP            cpu_to_be16(67)
62 #define OPA_TRAP_UNPATH                         cpu_to_be16(68)
63 #define OPA_TRAP_REPATH                         cpu_to_be16(69)
64 #define OPA_TRAP_PORT_CHANGE_STATE              cpu_to_be16(128)
65 #define OPA_TRAP_LINK_INTEGRITY                 cpu_to_be16(129)
66 #define OPA_TRAP_EXCESSIVE_BUFFER_OVERRUN       cpu_to_be16(130)
67 #define OPA_TRAP_FLOW_WATCHDOG                  cpu_to_be16(131)
68 #define OPA_TRAP_CHANGE_CAPABILITY              cpu_to_be16(144)
69 #define OPA_TRAP_CHANGE_SYSGUID                 cpu_to_be16(145)
70 #define OPA_TRAP_BAD_M_KEY                      cpu_to_be16(256)
71 #define OPA_TRAP_BAD_P_KEY                      cpu_to_be16(257)
72 #define OPA_TRAP_BAD_Q_KEY                      cpu_to_be16(258)
73 #define OPA_TRAP_SWITCH_BAD_PKEY                cpu_to_be16(259)
74 #define OPA_SMA_TRAP_DATA_LINK_WIDTH            cpu_to_be16(2048)
75 
76 /*
77  * Generic trap/notice other local changes flags (trap 144).
78  */
79 #define	OPA_NOTICE_TRAP_LWDE_CHG        0x08 /* Link Width Downgrade Enable
80 					      * changed
81 					      */
82 #define OPA_NOTICE_TRAP_LSE_CHG         0x04 /* Link Speed Enable changed */
83 #define OPA_NOTICE_TRAP_LWE_CHG         0x02 /* Link Width Enable changed */
84 #define OPA_NOTICE_TRAP_NODE_DESC_CHG   0x01
85 
86 struct opa_mad_notice_attr {
87 	u8 generic_type;
88 	u8 prod_type_msb;
89 	__be16 prod_type_lsb;
90 	__be16 trap_num;
91 	__be16 toggle_count;
92 	__be32 issuer_lid;
93 	__be32 reserved1;
94 	union ib_gid issuer_gid;
95 
96 	union {
97 		struct {
98 			u8	details[64];
99 		} raw_data;
100 
101 		struct {
102 			union ib_gid	gid;
103 		} __packed ntc_64_65_66_67;
104 
105 		struct {
106 			__be32	lid;
107 		} __packed ntc_128;
108 
109 		struct {
110 			__be32	lid;		/* where violation happened */
111 			u8	port_num;	/* where violation happened */
112 		} __packed ntc_129_130_131;
113 
114 		struct {
115 			__be32	lid;		/* LID where change occurred */
116 			__be32	new_cap_mask;	/* new capability mask */
117 			__be16	reserved2;
118 			__be16	cap_mask3;
119 			__be16	change_flags;	/* low 4 bits only */
120 		} __packed ntc_144;
121 
122 		struct {
123 			__be64	new_sys_guid;
124 			__be32	lid;		/* lid where sys guid changed */
125 		} __packed ntc_145;
126 
127 		struct {
128 			__be32	lid;
129 			__be32	dr_slid;
130 			u8	method;
131 			u8	dr_trunc_hop;
132 			__be16	attr_id;
133 			__be32	attr_mod;
134 			__be64	mkey;
135 			u8	dr_rtn_path[30];
136 		} __packed ntc_256;
137 
138 		struct {
139 			__be32		lid1;
140 			__be32		lid2;
141 			__be32		key;
142 			u8		sl;	/* SL: high 5 bits */
143 			u8		reserved3[3];
144 			union ib_gid	gid1;
145 			union ib_gid	gid2;
146 			__be32		qp1;	/* high 8 bits reserved */
147 			__be32		qp2;	/* high 8 bits reserved */
148 		} __packed ntc_257_258;
149 
150 		struct {
151 			__be16		flags;	/* low 8 bits reserved */
152 			__be16		pkey;
153 			__be32		lid1;
154 			__be32		lid2;
155 			u8		sl;	/* SL: high 5 bits */
156 			u8		reserved4[3];
157 			union ib_gid	gid1;
158 			union ib_gid	gid2;
159 			__be32		qp1;	/* high 8 bits reserved */
160 			__be32		qp2;	/* high 8 bits reserved */
161 		} __packed ntc_259;
162 
163 		struct {
164 			__be32	lid;
165 		} __packed ntc_2048;
166 
167 	};
168 	u8	class_data[0];
169 };
170 
171 #define IB_VLARB_LOWPRI_0_31    1
172 #define IB_VLARB_LOWPRI_32_63   2
173 #define IB_VLARB_HIGHPRI_0_31   3
174 #define IB_VLARB_HIGHPRI_32_63  4
175 
176 #define OPA_MAX_PREEMPT_CAP         32
177 #define OPA_VLARB_LOW_ELEMENTS       0
178 #define OPA_VLARB_HIGH_ELEMENTS      1
179 #define OPA_VLARB_PREEMPT_ELEMENTS   2
180 #define OPA_VLARB_PREEMPT_MATRIX     3
181 
182 #define IB_PMA_PORT_COUNTERS_CONG       cpu_to_be16(0xFF00)
183 
184 struct ib_pma_portcounters_cong {
185 	u8 reserved;
186 	u8 reserved1;
187 	__be16 port_check_rate;
188 	__be16 symbol_error_counter;
189 	u8 link_error_recovery_counter;
190 	u8 link_downed_counter;
191 	__be16 port_rcv_errors;
192 	__be16 port_rcv_remphys_errors;
193 	__be16 port_rcv_switch_relay_errors;
194 	__be16 port_xmit_discards;
195 	u8 port_xmit_constraint_errors;
196 	u8 port_rcv_constraint_errors;
197 	u8 reserved2;
198 	u8 link_overrun_errors; /* LocalLink: 7:4, BufferOverrun: 3:0 */
199 	__be16 reserved3;
200 	__be16 vl15_dropped;
201 	__be64 port_xmit_data;
202 	__be64 port_rcv_data;
203 	__be64 port_xmit_packets;
204 	__be64 port_rcv_packets;
205 	__be64 port_xmit_wait;
206 	__be64 port_adr_events;
207 } __packed;
208 
209 #define IB_SMP_UNSUP_VERSION    cpu_to_be16(0x0004)
210 #define IB_SMP_UNSUP_METHOD     cpu_to_be16(0x0008)
211 #define IB_SMP_UNSUP_METH_ATTR  cpu_to_be16(0x000C)
212 #define IB_SMP_INVALID_FIELD    cpu_to_be16(0x001C)
213 
214 #define OPA_MAX_PREEMPT_CAP         32
215 #define OPA_VLARB_LOW_ELEMENTS       0
216 #define OPA_VLARB_HIGH_ELEMENTS      1
217 #define OPA_VLARB_PREEMPT_ELEMENTS   2
218 #define OPA_VLARB_PREEMPT_MATRIX     3
219 
220 #define HFI1_XMIT_RATE_UNSUPPORTED               0x0
221 #define HFI1_XMIT_RATE_PICO                      0x7
222 /* number of 4nsec cycles equaling 2secs */
223 #define HFI1_CONG_TIMER_PSINTERVAL               0x1DCD64EC
224 
225 #define IB_CC_SVCTYPE_RC 0x0
226 #define IB_CC_SVCTYPE_UC 0x1
227 #define IB_CC_SVCTYPE_RD 0x2
228 #define IB_CC_SVCTYPE_UD 0x3
229 
230 /*
231  * There should be an equivalent IB #define for the following, but
232  * I cannot find it.
233  */
234 #define OPA_CC_LOG_TYPE_HFI	2
235 
236 struct opa_hfi1_cong_log_event_internal {
237 	u32 lqpn;
238 	u32 rqpn;
239 	u8 sl;
240 	u8 svc_type;
241 	u32 rlid;
242 	s64 timestamp; /* wider than 32 bits to detect 32 bit rollover */
243 };
244 
245 struct opa_hfi1_cong_log_event {
246 	u8 local_qp_cn_entry[3];
247 	u8 remote_qp_number_cn_entry[3];
248 	u8 sl_svc_type_cn_entry; /* 5 bits SL, 3 bits svc type */
249 	u8 reserved;
250 	__be32 remote_lid_cn_entry;
251 	__be32 timestamp_cn_entry;
252 } __packed;
253 
254 #define OPA_CONG_LOG_ELEMS	96
255 
256 struct opa_hfi1_cong_log {
257 	u8 log_type;
258 	u8 congestion_flags;
259 	__be16 threshold_event_counter;
260 	__be32 current_time_stamp;
261 	u8 threshold_cong_event_map[OPA_MAX_SLS / 8];
262 	struct opa_hfi1_cong_log_event events[OPA_CONG_LOG_ELEMS];
263 } __packed;
264 
265 #define IB_CC_TABLE_CAP_DEFAULT 31
266 
267 /* Port control flags */
268 #define IB_CC_CCS_PC_SL_BASED 0x01
269 
270 struct opa_congestion_setting_entry {
271 	u8 ccti_increase;
272 	u8 reserved;
273 	__be16 ccti_timer;
274 	u8 trigger_threshold;
275 	u8 ccti_min; /* min CCTI for cc table */
276 } __packed;
277 
278 struct opa_congestion_setting_entry_shadow {
279 	u8 ccti_increase;
280 	u8 reserved;
281 	u16 ccti_timer;
282 	u8 trigger_threshold;
283 	u8 ccti_min; /* min CCTI for cc table */
284 } __packed;
285 
286 struct opa_congestion_setting_attr {
287 	__be32 control_map;
288 	__be16 port_control;
289 	struct opa_congestion_setting_entry entries[OPA_MAX_SLS];
290 } __packed;
291 
292 struct opa_congestion_setting_attr_shadow {
293 	u32 control_map;
294 	u16 port_control;
295 	struct opa_congestion_setting_entry_shadow entries[OPA_MAX_SLS];
296 } __packed;
297 
298 #define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1
299 #define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1
300 
301 /* 64 Congestion Control table entries in a single MAD */
302 #define IB_CCT_ENTRIES 64
303 #define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2)
304 
305 struct ib_cc_table_entry {
306 	__be16 entry; /* shift:2, multiplier:14 */
307 };
308 
309 struct ib_cc_table_entry_shadow {
310 	u16 entry; /* shift:2, multiplier:14 */
311 };
312 
313 struct ib_cc_table_attr {
314 	__be16 ccti_limit; /* max CCTI for cc table */
315 	struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES];
316 } __packed;
317 
318 struct ib_cc_table_attr_shadow {
319 	u16 ccti_limit; /* max CCTI for cc table */
320 	struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES];
321 } __packed;
322 
323 #define CC_TABLE_SHADOW_MAX \
324 	(IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES)
325 
326 struct cc_table_shadow {
327 	u16 ccti_limit; /* max CCTI for cc table */
328 	struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX];
329 } __packed;
330 
331 /*
332  * struct cc_state combines the (active) per-port congestion control
333  * table, and the (active) per-SL congestion settings. cc_state data
334  * may need to be read in code paths that we want to be fast, so it
335  * is an RCU protected structure.
336  */
337 struct cc_state {
338 	struct rcu_head rcu;
339 	struct cc_table_shadow cct;
340 	struct opa_congestion_setting_attr_shadow cong_setting;
341 };
342 
343 /*
344  * OPA BufferControl MAD
345  */
346 
347 /* attribute modifier macros */
348 #define OPA_AM_NPORT_SHIFT	24
349 #define OPA_AM_NPORT_MASK	0xff
350 #define OPA_AM_NPORT_SMASK	(OPA_AM_NPORT_MASK << OPA_AM_NPORT_SHIFT)
351 #define OPA_AM_NPORT(am)	(((am) >> OPA_AM_NPORT_SHIFT) & \
352 					OPA_AM_NPORT_MASK)
353 
354 #define OPA_AM_NBLK_SHIFT	24
355 #define OPA_AM_NBLK_MASK	0xff
356 #define OPA_AM_NBLK_SMASK	(OPA_AM_NBLK_MASK << OPA_AM_NBLK_SHIFT)
357 #define OPA_AM_NBLK(am)		(((am) >> OPA_AM_NBLK_SHIFT) & \
358 					OPA_AM_NBLK_MASK)
359 
360 #define OPA_AM_START_BLK_SHIFT	0
361 #define OPA_AM_START_BLK_MASK	0xff
362 #define OPA_AM_START_BLK_SMASK	(OPA_AM_START_BLK_MASK << \
363 					OPA_AM_START_BLK_SHIFT)
364 #define OPA_AM_START_BLK(am)	(((am) >> OPA_AM_START_BLK_SHIFT) & \
365 					OPA_AM_START_BLK_MASK)
366 
367 #define OPA_AM_PORTNUM_SHIFT	0
368 #define OPA_AM_PORTNUM_MASK	0xff
369 #define OPA_AM_PORTNUM_SMASK	(OPA_AM_PORTNUM_MASK << OPA_AM_PORTNUM_SHIFT)
370 #define OPA_AM_PORTNUM(am)	(((am) >> OPA_AM_PORTNUM_SHIFT) & \
371 					OPA_AM_PORTNUM_MASK)
372 
373 #define OPA_AM_ASYNC_SHIFT	12
374 #define OPA_AM_ASYNC_MASK	0x1
375 #define OPA_AM_ASYNC_SMASK	(OPA_AM_ASYNC_MASK << OPA_AM_ASYNC_SHIFT)
376 #define OPA_AM_ASYNC(am)	(((am) >> OPA_AM_ASYNC_SHIFT) & \
377 					OPA_AM_ASYNC_MASK)
378 
379 #define OPA_AM_START_SM_CFG_SHIFT	9
380 #define OPA_AM_START_SM_CFG_MASK	0x1
381 #define OPA_AM_START_SM_CFG_SMASK	(OPA_AM_START_SM_CFG_MASK << \
382 						OPA_AM_START_SM_CFG_SHIFT)
383 #define OPA_AM_START_SM_CFG(am)		(((am) >> OPA_AM_START_SM_CFG_SHIFT) \
384 						& OPA_AM_START_SM_CFG_MASK)
385 
386 #define OPA_AM_CI_ADDR_SHIFT	19
387 #define OPA_AM_CI_ADDR_MASK	0xfff
388 #define OPA_AM_CI_ADDR_SMASK	(OPA_AM_CI_ADDR_MASK << OPA_CI_ADDR_SHIFT)
389 #define OPA_AM_CI_ADDR(am)	(((am) >> OPA_AM_CI_ADDR_SHIFT) & \
390 					OPA_AM_CI_ADDR_MASK)
391 
392 #define OPA_AM_CI_LEN_SHIFT	13
393 #define OPA_AM_CI_LEN_MASK	0x3f
394 #define OPA_AM_CI_LEN_SMASK	(OPA_AM_CI_LEN_MASK << OPA_CI_LEN_SHIFT)
395 #define OPA_AM_CI_LEN(am)	(((am) >> OPA_AM_CI_LEN_SHIFT) & \
396 					OPA_AM_CI_LEN_MASK)
397 
398 /* error info macros */
399 #define OPA_EI_STATUS_SMASK	0x80
400 #define OPA_EI_CODE_SMASK	0x0f
401 
402 struct vl_limit {
403 	__be16 dedicated;
404 	__be16 shared;
405 };
406 
407 struct buffer_control {
408 	__be16 reserved;
409 	__be16 overall_shared_limit;
410 	struct vl_limit vl[OPA_MAX_VLS];
411 };
412 
413 struct sc2vlnt {
414 	u8 vlnt[32]; /* 5 bit VL, 3 bits reserved */
415 };
416 
417 /*
418  * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
419  * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
420  * We support 5 counters which only count the mandatory quantities.
421  */
422 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
423 #define COUNTER_MASK0_9 \
424 	cpu_to_be32(COUNTER_MASK(1, 0) | \
425 		    COUNTER_MASK(1, 1) | \
426 		    COUNTER_MASK(1, 2) | \
427 		    COUNTER_MASK(1, 3) | \
428 		    COUNTER_MASK(1, 4))
429 
430 void hfi1_event_pkey_change(struct hfi1_devdata *dd, u8 port);
431 void hfi1_handle_trap_timer(unsigned long data);
432 
433 #endif				/* _HFI1_MAD_H */
434