summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/hfi1/mad.h
blob: 1d45a008fa7f4093aa047c31ab0d8b7a66a28cc9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
/*
 * Copyright(c) 2015 - 2017 Intel Corporation.
 */

#ifndef _HFI1_MAD_H
#define _HFI1_MAD_H

#include <rdma/ib_pma.h>
#include <rdma/opa_smi.h>
#include <rdma/opa_port_info.h>
#include "opa_compat.h"

/*
 * OPA Traps
 */
#define OPA_TRAP_GID_NOW_IN_SERVICE             cpu_to_be16(64)
#define OPA_TRAP_GID_OUT_OF_SERVICE             cpu_to_be16(65)
#define OPA_TRAP_ADD_MULTICAST_GROUP            cpu_to_be16(66)
#define OPA_TRAL_DEL_MULTICAST_GROUP            cpu_to_be16(67)
#define OPA_TRAP_UNPATH                         cpu_to_be16(68)
#define OPA_TRAP_REPATH                         cpu_to_be16(69)
#define OPA_TRAP_PORT_CHANGE_STATE              cpu_to_be16(128)
#define OPA_TRAP_LINK_INTEGRITY                 cpu_to_be16(129)
#define OPA_TRAP_EXCESSIVE_BUFFER_OVERRUN       cpu_to_be16(130)
#define OPA_TRAP_FLOW_WATCHDOG                  cpu_to_be16(131)
#define OPA_TRAP_CHANGE_CAPABILITY              cpu_to_be16(144)
#define OPA_TRAP_CHANGE_SYSGUID                 cpu_to_be16(145)
#define OPA_TRAP_BAD_M_KEY                      cpu_to_be16(256)
#define OPA_TRAP_BAD_P_KEY                      cpu_to_be16(257)
#define OPA_TRAP_BAD_Q_KEY                      cpu_to_be16(258)
#define OPA_TRAP_SWITCH_BAD_PKEY                cpu_to_be16(259)
#define OPA_SMA_TRAP_DATA_LINK_WIDTH            cpu_to_be16(2048)

/*
 * Generic trap/notice other local changes flags (trap 144).
 */
#define	OPA_NOTICE_TRAP_LWDE_CHG        0x08 /* Link Width Downgrade Enable
					      * changed
					      */
#define OPA_NOTICE_TRAP_LSE_CHG         0x04 /* Link Speed Enable changed */
#define OPA_NOTICE_TRAP_LWE_CHG         0x02 /* Link Width Enable changed */
#define OPA_NOTICE_TRAP_NODE_DESC_CHG   0x01

struct opa_mad_notice_attr {
	u8 generic_type;
	u8 prod_type_msb;
	__be16 prod_type_lsb;
	__be16 trap_num;
	__be16 toggle_count;
	__be32 issuer_lid;
	__be32 reserved1;
	union ib_gid issuer_gid;

	union {
		struct {
			u8	details[64];
		} raw_data;

		struct {
			union ib_gid	gid;
		} __packed ntc_64_65_66_67;

		struct {
			__be32	lid;
		} __packed ntc_128;

		struct {
			__be32	lid;		/* where violation happened */
			u8	port_num;	/* where violation happened */
		} __packed ntc_129_130_131;

		struct {
			__be32	lid;		/* LID where change occurred */
			__be32	new_cap_mask;	/* new capability mask */
			__be16	reserved2;
			__be16	cap_mask3;
			__be16	change_flags;	/* low 4 bits only */
		} __packed ntc_144;

		struct {
			__be64	new_sys_guid;
			__be32	lid;		/* lid where sys guid changed */
		} __packed ntc_145;

		struct {
			__be32	lid;
			__be32	dr_slid;
			u8	method;
			u8	dr_trunc_hop;
			__be16	attr_id;
			__be32	attr_mod;
			__be64	mkey;
			u8	dr_rtn_path[30];
		} __packed ntc_256;

		struct {
			__be32		lid1;
			__be32		lid2;
			__be32		key;
			u8		sl;	/* SL: high 5 bits */
			u8		reserved3[3];
			union ib_gid	gid1;
			union ib_gid	gid2;
			__be32		qp1;	/* high 8 bits reserved */
			__be32		qp2;	/* high 8 bits reserved */
		} __packed ntc_257_258;

		struct {
			__be16		flags;	/* low 8 bits reserved */
			__be16		pkey;
			__be32		lid1;
			__be32		lid2;
			u8		sl;	/* SL: high 5 bits */
			u8		reserved4[3];
			union ib_gid	gid1;
			union ib_gid	gid2;
			__be32		qp1;	/* high 8 bits reserved */
			__be32		qp2;	/* high 8 bits reserved */
		} __packed ntc_259;

		struct {
			__be32	lid;
		} __packed ntc_2048;

	};
	u8	class_data[];
};

#define IB_VLARB_LOWPRI_0_31    1
#define IB_VLARB_LOWPRI_32_63   2
#define IB_VLARB_HIGHPRI_0_31   3
#define IB_VLARB_HIGHPRI_32_63  4

#define OPA_MAX_PREEMPT_CAP         32
#define OPA_VLARB_LOW_ELEMENTS       0
#define OPA_VLARB_HIGH_ELEMENTS      1
#define OPA_VLARB_PREEMPT_ELEMENTS   2
#define OPA_VLARB_PREEMPT_MATRIX     3

#define IB_PMA_PORT_COUNTERS_CONG       cpu_to_be16(0xFF00)
#define LINK_SPEED_25G		1
#define LINK_SPEED_12_5G	2
#define LINK_WIDTH_DEFAULT	4
#define DECIMAL_FACTORING	1000
/*
 * The default link width is multiplied by 1000
 * to get accurate value after division.
 */
#define FACTOR_LINK_WIDTH	(LINK_WIDTH_DEFAULT * DECIMAL_FACTORING)

struct ib_pma_portcounters_cong {
	u8 reserved;
	u8 reserved1;
	__be16 port_check_rate;
	__be16 symbol_error_counter;
	u8 link_error_recovery_counter;
	u8 link_downed_counter;
	__be16 port_rcv_errors;
	__be16 port_rcv_remphys_errors;
	__be16 port_rcv_switch_relay_errors;
	__be16 port_xmit_discards;
	u8 port_xmit_constraint_errors;
	u8 port_rcv_constraint_errors;
	u8 reserved2;
	u8 link_overrun_errors; /* LocalLink: 7:4, BufferOverrun: 3:0 */
	__be16 reserved3;
	__be16 vl15_dropped;
	__be64 port_xmit_data;
	__be64 port_rcv_data;
	__be64 port_xmit_packets;
	__be64 port_rcv_packets;
	__be64 port_xmit_wait;
	__be64 port_adr_events;
} __packed;

#define IB_SMP_UNSUP_VERSION    cpu_to_be16(0x0004)
#define IB_SMP_UNSUP_METHOD     cpu_to_be16(0x0008)
#define IB_SMP_UNSUP_METH_ATTR  cpu_to_be16(0x000C)
#define IB_SMP_INVALID_FIELD    cpu_to_be16(0x001C)

#define OPA_MAX_PREEMPT_CAP         32
#define OPA_VLARB_LOW_ELEMENTS       0
#define OPA_VLARB_HIGH_ELEMENTS      1
#define OPA_VLARB_PREEMPT_ELEMENTS   2
#define OPA_VLARB_PREEMPT_MATRIX     3

#define HFI1_XMIT_RATE_UNSUPPORTED               0x0
#define HFI1_XMIT_RATE_PICO                      0x7
/* number of 4nsec cycles equaling 2secs */
#define HFI1_CONG_TIMER_PSINTERVAL               0x1DCD64EC

#define IB_CC_SVCTYPE_RC 0x0
#define IB_CC_SVCTYPE_UC 0x1
#define IB_CC_SVCTYPE_RD 0x2
#define IB_CC_SVCTYPE_UD 0x3

/*
 * There should be an equivalent IB #define for the following, but
 * I cannot find it.
 */
#define OPA_CC_LOG_TYPE_HFI	2

struct opa_hfi1_cong_log_event_internal {
	u32 lqpn;
	u32 rqpn;
	u8 sl;
	u8 svc_type;
	u32 rlid;
	u64 timestamp; /* wider than 32 bits to detect 32 bit rollover */
};

struct opa_hfi1_cong_log_event {
	u8 local_qp_cn_entry[3];
	u8 remote_qp_number_cn_entry[3];
	u8 sl_svc_type_cn_entry; /* 5 bits SL, 3 bits svc type */
	u8 reserved;
	__be32 remote_lid_cn_entry;
	__be32 timestamp_cn_entry;
} __packed;

#define OPA_CONG_LOG_ELEMS	96

struct opa_hfi1_cong_log {
	u8 log_type;
	u8 congestion_flags;
	__be16 threshold_event_counter;
	__be32 current_time_stamp;
	u8 threshold_cong_event_map[OPA_MAX_SLS / 8];
	struct opa_hfi1_cong_log_event events[OPA_CONG_LOG_ELEMS];
} __packed;

#define IB_CC_TABLE_CAP_DEFAULT 31

/* Port control flags */
#define IB_CC_CCS_PC_SL_BASED 0x01

struct opa_congestion_setting_entry {
	u8 ccti_increase;
	u8 reserved;
	__be16 ccti_timer;
	u8 trigger_threshold;
	u8 ccti_min; /* min CCTI for cc table */
} __packed;

struct opa_congestion_setting_entry_shadow {
	u8 ccti_increase;
	u8 reserved;
	u16 ccti_timer;
	u8 trigger_threshold;
	u8 ccti_min; /* min CCTI for cc table */
} __packed;

struct opa_congestion_setting_attr {
	__be32 control_map;
	__be16 port_control;
	struct opa_congestion_setting_entry entries[OPA_MAX_SLS];
} __packed;

struct opa_congestion_setting_attr_shadow {
	u32 control_map;
	u16 port_control;
	struct opa_congestion_setting_entry_shadow entries[OPA_MAX_SLS];
} __packed;

#define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1
#define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1

/* 64 Congestion Control table entries in a single MAD */
#define IB_CCT_ENTRIES 64
#define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2)

struct ib_cc_table_entry {
	__be16 entry; /* shift:2, multiplier:14 */
};

struct ib_cc_table_entry_shadow {
	u16 entry; /* shift:2, multiplier:14 */
};

struct ib_cc_table_attr {
	__be16 ccti_limit; /* max CCTI for cc table */
	struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES];
} __packed;

struct ib_cc_table_attr_shadow {
	u16 ccti_limit; /* max CCTI for cc table */
	struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES];
} __packed;

#define CC_TABLE_SHADOW_MAX \
	(IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES)

struct cc_table_shadow {
	u16 ccti_limit; /* max CCTI for cc table */
	struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX];
} __packed;

/*
 * struct cc_state combines the (active) per-port congestion control
 * table, and the (active) per-SL congestion settings. cc_state data
 * may need to be read in code paths that we want to be fast, so it
 * is an RCU protected structure.
 */
struct cc_state {
	struct rcu_head rcu;
	struct cc_table_shadow cct;
	struct opa_congestion_setting_attr_shadow cong_setting;
};

/*
 * OPA BufferControl MAD
 */

/* attribute modifier macros */
#define OPA_AM_NPORT_SHIFT	24
#define OPA_AM_NPORT_MASK	0xff
#define OPA_AM_NPORT_SMASK	(OPA_AM_NPORT_MASK << OPA_AM_NPORT_SHIFT)
#define OPA_AM_NPORT(am)	(((am) >> OPA_AM_NPORT_SHIFT) & \
					OPA_AM_NPORT_MASK)

#define OPA_AM_NBLK_SHIFT	24
#define OPA_AM_NBLK_MASK	0xff
#define OPA_AM_NBLK_SMASK	(OPA_AM_NBLK_MASK << OPA_AM_NBLK_SHIFT)
#define OPA_AM_NBLK(am)		(((am) >> OPA_AM_NBLK_SHIFT) & \
					OPA_AM_NBLK_MASK)

#define OPA_AM_START_BLK_SHIFT	0
#define OPA_AM_START_BLK_MASK	0xff
#define OPA_AM_START_BLK_SMASK	(OPA_AM_START_BLK_MASK << \
					OPA_AM_START_BLK_SHIFT)
#define OPA_AM_START_BLK(am)	(((am) >> OPA_AM_START_BLK_SHIFT) & \
					OPA_AM_START_BLK_MASK)

#define OPA_AM_PORTNUM_SHIFT	0
#define OPA_AM_PORTNUM_MASK	0xff
#define OPA_AM_PORTNUM_SMASK	(OPA_AM_PORTNUM_MASK << OPA_AM_PORTNUM_SHIFT)
#define OPA_AM_PORTNUM(am)	(((am) >> OPA_AM_PORTNUM_SHIFT) & \
					OPA_AM_PORTNUM_MASK)

#define OPA_AM_ASYNC_SHIFT	12
#define OPA_AM_ASYNC_MASK	0x1
#define OPA_AM_ASYNC_SMASK	(OPA_AM_ASYNC_MASK << OPA_AM_ASYNC_SHIFT)
#define OPA_AM_ASYNC(am)	(((am) >> OPA_AM_ASYNC_SHIFT) & \
					OPA_AM_ASYNC_MASK)

#define OPA_AM_START_SM_CFG_SHIFT	9
#define OPA_AM_START_SM_CFG_MASK	0x1
#define OPA_AM_START_SM_CFG_SMASK	(OPA_AM_START_SM_CFG_MASK << \
						OPA_AM_START_SM_CFG_SHIFT)
#define OPA_AM_START_SM_CFG(am)		(((am) >> OPA_AM_START_SM_CFG_SHIFT) \
						& OPA_AM_START_SM_CFG_MASK)

#define OPA_AM_CI_ADDR_SHIFT	19
#define OPA_AM_CI_ADDR_MASK	0xfff
#define OPA_AM_CI_ADDR_SMASK	(OPA_AM_CI_ADDR_MASK << OPA_CI_ADDR_SHIFT)
#define OPA_AM_CI_ADDR(am)	(((am) >> OPA_AM_CI_ADDR_SHIFT) & \
					OPA_AM_CI_ADDR_MASK)

#define OPA_AM_CI_LEN_SHIFT	13
#define OPA_AM_CI_LEN_MASK	0x3f
#define OPA_AM_CI_LEN_SMASK	(OPA_AM_CI_LEN_MASK << OPA_CI_LEN_SHIFT)
#define OPA_AM_CI_LEN(am)	(((am) >> OPA_AM_CI_LEN_SHIFT) & \
					OPA_AM_CI_LEN_MASK)

/* error info macros */
#define OPA_EI_STATUS_SMASK	0x80
#define OPA_EI_CODE_SMASK	0x0f

struct vl_limit {
	__be16 dedicated;
	__be16 shared;
};

struct buffer_control {
	__be16 reserved;
	__be16 overall_shared_limit;
	struct vl_limit vl[OPA_MAX_VLS];
};

struct sc2vlnt {
	u8 vlnt[32]; /* 5 bit VL, 3 bits reserved */
};

/*
 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
 * We support 5 counters which only count the mandatory quantities.
 */
#define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
#define COUNTER_MASK0_9 \
	cpu_to_be32(COUNTER_MASK(1, 0) | \
		    COUNTER_MASK(1, 1) | \
		    COUNTER_MASK(1, 2) | \
		    COUNTER_MASK(1, 3) | \
		    COUNTER_MASK(1, 4))

void hfi1_event_pkey_change(struct hfi1_devdata *dd, u32 port);
void hfi1_handle_trap_timer(struct timer_list *t);
u16 tx_link_width(u16 link_width);
u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd, u16 link_width,
			   u16 link_speed, int vl);
/**
 * get_link_speed - determine whether 12.5G or 25G speed
 * @link_speed: the speed of active link
 * @return: Return 2 if link speed identified as 12.5G
 * or return 1 if link speed is 25G.
 *
 * The function indirectly calculate required link speed
 * value for convert_xmit_counter function. If the link
 * speed is 25G, the function return as 1 as it is required
 * by xmit counter conversion formula :-( 25G / link_speed).
 * This conversion will provide value 1 if current
 * link speed is 25G or 2 if 12.5G.This is done to avoid
 * 12.5 float number conversion.
 */
static inline u16 get_link_speed(u16 link_speed)
{
	return (link_speed == 1) ?
		 LINK_SPEED_12_5G : LINK_SPEED_25G;
}

/**
 * convert_xmit_counter - calculate flit times for given xmit counter
 * value
 * @xmit_wait_val: current xmit counter value
 * @link_width: width of active link
 * @link_speed: speed of active link
 * @return: return xmit counter value in flit times.
 */
static inline u64 convert_xmit_counter(u64 xmit_wait_val, u16 link_width,
				       u16 link_speed)
{
	return (xmit_wait_val * 2 * (FACTOR_LINK_WIDTH / link_width)
		 * link_speed) / DECIMAL_FACTORING;
}
#endif				/* _HFI1_MAD_H */