1 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
2 /*
3 * Copyright(c) 2015 - 2017 Intel Corporation.
4 */
5
6 #ifndef _HFI1_MAD_H
7 #define _HFI1_MAD_H
8
9 #include <rdma/ib_pma.h>
10 #include <rdma/opa_smi.h>
11 #include <rdma/opa_port_info.h>
12 #include "opa_compat.h"
13
14 /*
15 * OPA Traps
16 */
17 #define OPA_TRAP_GID_NOW_IN_SERVICE cpu_to_be16(64)
18 #define OPA_TRAP_GID_OUT_OF_SERVICE cpu_to_be16(65)
19 #define OPA_TRAP_ADD_MULTICAST_GROUP cpu_to_be16(66)
20 #define OPA_TRAL_DEL_MULTICAST_GROUP cpu_to_be16(67)
21 #define OPA_TRAP_UNPATH cpu_to_be16(68)
22 #define OPA_TRAP_REPATH cpu_to_be16(69)
23 #define OPA_TRAP_PORT_CHANGE_STATE cpu_to_be16(128)
24 #define OPA_TRAP_LINK_INTEGRITY cpu_to_be16(129)
25 #define OPA_TRAP_EXCESSIVE_BUFFER_OVERRUN cpu_to_be16(130)
26 #define OPA_TRAP_FLOW_WATCHDOG cpu_to_be16(131)
27 #define OPA_TRAP_CHANGE_CAPABILITY cpu_to_be16(144)
28 #define OPA_TRAP_CHANGE_SYSGUID cpu_to_be16(145)
29 #define OPA_TRAP_BAD_M_KEY cpu_to_be16(256)
30 #define OPA_TRAP_BAD_P_KEY cpu_to_be16(257)
31 #define OPA_TRAP_BAD_Q_KEY cpu_to_be16(258)
32 #define OPA_TRAP_SWITCH_BAD_PKEY cpu_to_be16(259)
33 #define OPA_SMA_TRAP_DATA_LINK_WIDTH cpu_to_be16(2048)
34
35 /*
36 * Generic trap/notice other local changes flags (trap 144).
37 */
38 #define OPA_NOTICE_TRAP_LWDE_CHG 0x08 /* Link Width Downgrade Enable
39 * changed
40 */
41 #define OPA_NOTICE_TRAP_LSE_CHG 0x04 /* Link Speed Enable changed */
42 #define OPA_NOTICE_TRAP_LWE_CHG 0x02 /* Link Width Enable changed */
43 #define OPA_NOTICE_TRAP_NODE_DESC_CHG 0x01
44
45 struct opa_mad_notice_attr {
46 u8 generic_type;
47 u8 prod_type_msb;
48 __be16 prod_type_lsb;
49 __be16 trap_num;
50 __be16 toggle_count;
51 __be32 issuer_lid;
52 __be32 reserved1;
53 union ib_gid issuer_gid;
54
55 union {
56 struct {
57 u8 details[64];
58 } raw_data;
59
60 struct {
61 union ib_gid gid;
62 } __packed ntc_64_65_66_67;
63
64 struct {
65 __be32 lid;
66 } __packed ntc_128;
67
68 struct {
69 __be32 lid; /* where violation happened */
70 u8 port_num; /* where violation happened */
71 } __packed ntc_129_130_131;
72
73 struct {
74 __be32 lid; /* LID where change occurred */
75 __be32 new_cap_mask; /* new capability mask */
76 __be16 reserved2;
77 __be16 cap_mask3;
78 __be16 change_flags; /* low 4 bits only */
79 } __packed ntc_144;
80
81 struct {
82 __be64 new_sys_guid;
83 __be32 lid; /* lid where sys guid changed */
84 } __packed ntc_145;
85
86 struct {
87 __be32 lid;
88 __be32 dr_slid;
89 u8 method;
90 u8 dr_trunc_hop;
91 __be16 attr_id;
92 __be32 attr_mod;
93 __be64 mkey;
94 u8 dr_rtn_path[30];
95 } __packed ntc_256;
96
97 struct {
98 __be32 lid1;
99 __be32 lid2;
100 __be32 key;
101 u8 sl; /* SL: high 5 bits */
102 u8 reserved3[3];
103 union ib_gid gid1;
104 union ib_gid gid2;
105 __be32 qp1; /* high 8 bits reserved */
106 __be32 qp2; /* high 8 bits reserved */
107 } __packed ntc_257_258;
108
109 struct {
110 __be16 flags; /* low 8 bits reserved */
111 __be16 pkey;
112 __be32 lid1;
113 __be32 lid2;
114 u8 sl; /* SL: high 5 bits */
115 u8 reserved4[3];
116 union ib_gid gid1;
117 union ib_gid gid2;
118 __be32 qp1; /* high 8 bits reserved */
119 __be32 qp2; /* high 8 bits reserved */
120 } __packed ntc_259;
121
122 struct {
123 __be32 lid;
124 } __packed ntc_2048;
125
126 };
127 u8 class_data[];
128 };
129
130 #define IB_VLARB_LOWPRI_0_31 1
131 #define IB_VLARB_LOWPRI_32_63 2
132 #define IB_VLARB_HIGHPRI_0_31 3
133 #define IB_VLARB_HIGHPRI_32_63 4
134
135 #define OPA_MAX_PREEMPT_CAP 32
136 #define OPA_VLARB_LOW_ELEMENTS 0
137 #define OPA_VLARB_HIGH_ELEMENTS 1
138 #define OPA_VLARB_PREEMPT_ELEMENTS 2
139 #define OPA_VLARB_PREEMPT_MATRIX 3
140
141 #define IB_PMA_PORT_COUNTERS_CONG cpu_to_be16(0xFF00)
142 #define LINK_SPEED_25G 1
143 #define LINK_SPEED_12_5G 2
144 #define LINK_WIDTH_DEFAULT 4
145 #define DECIMAL_FACTORING 1000
146 /*
147 * The default link width is multiplied by 1000
148 * to get accurate value after division.
149 */
150 #define FACTOR_LINK_WIDTH (LINK_WIDTH_DEFAULT * DECIMAL_FACTORING)
151
152 struct ib_pma_portcounters_cong {
153 u8 reserved;
154 u8 reserved1;
155 __be16 port_check_rate;
156 __be16 symbol_error_counter;
157 u8 link_error_recovery_counter;
158 u8 link_downed_counter;
159 __be16 port_rcv_errors;
160 __be16 port_rcv_remphys_errors;
161 __be16 port_rcv_switch_relay_errors;
162 __be16 port_xmit_discards;
163 u8 port_xmit_constraint_errors;
164 u8 port_rcv_constraint_errors;
165 u8 reserved2;
166 u8 link_overrun_errors; /* LocalLink: 7:4, BufferOverrun: 3:0 */
167 __be16 reserved3;
168 __be16 vl15_dropped;
169 __be64 port_xmit_data;
170 __be64 port_rcv_data;
171 __be64 port_xmit_packets;
172 __be64 port_rcv_packets;
173 __be64 port_xmit_wait;
174 __be64 port_adr_events;
175 } __packed;
176
177 #define IB_SMP_UNSUP_VERSION cpu_to_be16(0x0004)
178 #define IB_SMP_UNSUP_METHOD cpu_to_be16(0x0008)
179 #define IB_SMP_UNSUP_METH_ATTR cpu_to_be16(0x000C)
180 #define IB_SMP_INVALID_FIELD cpu_to_be16(0x001C)
181
182 #define OPA_MAX_PREEMPT_CAP 32
183 #define OPA_VLARB_LOW_ELEMENTS 0
184 #define OPA_VLARB_HIGH_ELEMENTS 1
185 #define OPA_VLARB_PREEMPT_ELEMENTS 2
186 #define OPA_VLARB_PREEMPT_MATRIX 3
187
188 #define HFI1_XMIT_RATE_UNSUPPORTED 0x0
189 #define HFI1_XMIT_RATE_PICO 0x7
190 /* number of 4nsec cycles equaling 2secs */
191 #define HFI1_CONG_TIMER_PSINTERVAL 0x1DCD64EC
192
193 #define IB_CC_SVCTYPE_RC 0x0
194 #define IB_CC_SVCTYPE_UC 0x1
195 #define IB_CC_SVCTYPE_RD 0x2
196 #define IB_CC_SVCTYPE_UD 0x3
197
198 /*
199 * There should be an equivalent IB #define for the following, but
200 * I cannot find it.
201 */
202 #define OPA_CC_LOG_TYPE_HFI 2
203
204 struct opa_hfi1_cong_log_event_internal {
205 u32 lqpn;
206 u32 rqpn;
207 u8 sl;
208 u8 svc_type;
209 u32 rlid;
210 u64 timestamp; /* wider than 32 bits to detect 32 bit rollover */
211 };
212
213 struct opa_hfi1_cong_log_event {
214 u8 local_qp_cn_entry[3];
215 u8 remote_qp_number_cn_entry[3];
216 u8 sl_svc_type_cn_entry; /* 5 bits SL, 3 bits svc type */
217 u8 reserved;
218 __be32 remote_lid_cn_entry;
219 __be32 timestamp_cn_entry;
220 } __packed;
221
222 #define OPA_CONG_LOG_ELEMS 96
223
224 struct opa_hfi1_cong_log {
225 u8 log_type;
226 u8 congestion_flags;
227 __be16 threshold_event_counter;
228 __be32 current_time_stamp;
229 u8 threshold_cong_event_map[OPA_MAX_SLS / 8];
230 struct opa_hfi1_cong_log_event events[OPA_CONG_LOG_ELEMS];
231 } __packed;
232
233 #define IB_CC_TABLE_CAP_DEFAULT 31
234
235 /* Port control flags */
236 #define IB_CC_CCS_PC_SL_BASED 0x01
237
238 struct opa_congestion_setting_entry {
239 u8 ccti_increase;
240 u8 reserved;
241 __be16 ccti_timer;
242 u8 trigger_threshold;
243 u8 ccti_min; /* min CCTI for cc table */
244 } __packed;
245
246 struct opa_congestion_setting_entry_shadow {
247 u8 ccti_increase;
248 u8 reserved;
249 u16 ccti_timer;
250 u8 trigger_threshold;
251 u8 ccti_min; /* min CCTI for cc table */
252 } __packed;
253
254 struct opa_congestion_setting_attr {
255 __be32 control_map;
256 __be16 port_control;
257 struct opa_congestion_setting_entry entries[OPA_MAX_SLS];
258 } __packed;
259
260 struct opa_congestion_setting_attr_shadow {
261 u32 control_map;
262 u16 port_control;
263 struct opa_congestion_setting_entry_shadow entries[OPA_MAX_SLS];
264 } __packed;
265
266 #define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1
267 #define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1
268
269 /* 64 Congestion Control table entries in a single MAD */
270 #define IB_CCT_ENTRIES 64
271 #define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2)
272
273 struct ib_cc_table_entry {
274 __be16 entry; /* shift:2, multiplier:14 */
275 };
276
277 struct ib_cc_table_entry_shadow {
278 u16 entry; /* shift:2, multiplier:14 */
279 };
280
281 struct ib_cc_table_attr {
282 __be16 ccti_limit; /* max CCTI for cc table */
283 struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES];
284 } __packed;
285
286 struct ib_cc_table_attr_shadow {
287 u16 ccti_limit; /* max CCTI for cc table */
288 struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES];
289 } __packed;
290
291 #define CC_TABLE_SHADOW_MAX \
292 (IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES)
293
294 struct cc_table_shadow {
295 u16 ccti_limit; /* max CCTI for cc table */
296 struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX];
297 } __packed;
298
299 /*
300 * struct cc_state combines the (active) per-port congestion control
301 * table, and the (active) per-SL congestion settings. cc_state data
302 * may need to be read in code paths that we want to be fast, so it
303 * is an RCU protected structure.
304 */
305 struct cc_state {
306 struct rcu_head rcu;
307 struct cc_table_shadow cct;
308 struct opa_congestion_setting_attr_shadow cong_setting;
309 };
310
311 /*
312 * OPA BufferControl MAD
313 */
314
315 /* attribute modifier macros */
316 #define OPA_AM_NPORT_SHIFT 24
317 #define OPA_AM_NPORT_MASK 0xff
318 #define OPA_AM_NPORT_SMASK (OPA_AM_NPORT_MASK << OPA_AM_NPORT_SHIFT)
319 #define OPA_AM_NPORT(am) (((am) >> OPA_AM_NPORT_SHIFT) & \
320 OPA_AM_NPORT_MASK)
321
322 #define OPA_AM_NBLK_SHIFT 24
323 #define OPA_AM_NBLK_MASK 0xff
324 #define OPA_AM_NBLK_SMASK (OPA_AM_NBLK_MASK << OPA_AM_NBLK_SHIFT)
325 #define OPA_AM_NBLK(am) (((am) >> OPA_AM_NBLK_SHIFT) & \
326 OPA_AM_NBLK_MASK)
327
328 #define OPA_AM_START_BLK_SHIFT 0
329 #define OPA_AM_START_BLK_MASK 0xff
330 #define OPA_AM_START_BLK_SMASK (OPA_AM_START_BLK_MASK << \
331 OPA_AM_START_BLK_SHIFT)
332 #define OPA_AM_START_BLK(am) (((am) >> OPA_AM_START_BLK_SHIFT) & \
333 OPA_AM_START_BLK_MASK)
334
335 #define OPA_AM_PORTNUM_SHIFT 0
336 #define OPA_AM_PORTNUM_MASK 0xff
337 #define OPA_AM_PORTNUM_SMASK (OPA_AM_PORTNUM_MASK << OPA_AM_PORTNUM_SHIFT)
338 #define OPA_AM_PORTNUM(am) (((am) >> OPA_AM_PORTNUM_SHIFT) & \
339 OPA_AM_PORTNUM_MASK)
340
341 #define OPA_AM_ASYNC_SHIFT 12
342 #define OPA_AM_ASYNC_MASK 0x1
343 #define OPA_AM_ASYNC_SMASK (OPA_AM_ASYNC_MASK << OPA_AM_ASYNC_SHIFT)
344 #define OPA_AM_ASYNC(am) (((am) >> OPA_AM_ASYNC_SHIFT) & \
345 OPA_AM_ASYNC_MASK)
346
347 #define OPA_AM_START_SM_CFG_SHIFT 9
348 #define OPA_AM_START_SM_CFG_MASK 0x1
349 #define OPA_AM_START_SM_CFG_SMASK (OPA_AM_START_SM_CFG_MASK << \
350 OPA_AM_START_SM_CFG_SHIFT)
351 #define OPA_AM_START_SM_CFG(am) (((am) >> OPA_AM_START_SM_CFG_SHIFT) \
352 & OPA_AM_START_SM_CFG_MASK)
353
354 #define OPA_AM_CI_ADDR_SHIFT 19
355 #define OPA_AM_CI_ADDR_MASK 0xfff
356 #define OPA_AM_CI_ADDR_SMASK (OPA_AM_CI_ADDR_MASK << OPA_CI_ADDR_SHIFT)
357 #define OPA_AM_CI_ADDR(am) (((am) >> OPA_AM_CI_ADDR_SHIFT) & \
358 OPA_AM_CI_ADDR_MASK)
359
360 #define OPA_AM_CI_LEN_SHIFT 13
361 #define OPA_AM_CI_LEN_MASK 0x3f
362 #define OPA_AM_CI_LEN_SMASK (OPA_AM_CI_LEN_MASK << OPA_CI_LEN_SHIFT)
363 #define OPA_AM_CI_LEN(am) (((am) >> OPA_AM_CI_LEN_SHIFT) & \
364 OPA_AM_CI_LEN_MASK)
365
366 /* error info macros */
367 #define OPA_EI_STATUS_SMASK 0x80
368 #define OPA_EI_CODE_SMASK 0x0f
369
370 struct vl_limit {
371 __be16 dedicated;
372 __be16 shared;
373 };
374
375 struct buffer_control {
376 __be16 reserved;
377 __be16 overall_shared_limit;
378 struct vl_limit vl[OPA_MAX_VLS];
379 };
380
381 struct sc2vlnt {
382 u8 vlnt[32]; /* 5 bit VL, 3 bits reserved */
383 };
384
385 /*
386 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
387 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
388 * We support 5 counters which only count the mandatory quantities.
389 */
390 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
391 #define COUNTER_MASK0_9 \
392 cpu_to_be32(COUNTER_MASK(1, 0) | \
393 COUNTER_MASK(1, 1) | \
394 COUNTER_MASK(1, 2) | \
395 COUNTER_MASK(1, 3) | \
396 COUNTER_MASK(1, 4))
397
398 void hfi1_event_pkey_change(struct hfi1_devdata *dd, u32 port);
399 void hfi1_handle_trap_timer(struct timer_list *t);
400 u16 tx_link_width(u16 link_width);
401 u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd, u16 link_width,
402 u16 link_speed, int vl);
403 /**
404 * get_link_speed - determine whether 12.5G or 25G speed
405 * @link_speed: the speed of active link
406 * @return: Return 2 if link speed identified as 12.5G
407 * or return 1 if link speed is 25G.
408 *
409 * The function indirectly calculate required link speed
410 * value for convert_xmit_counter function. If the link
411 * speed is 25G, the function return as 1 as it is required
412 * by xmit counter conversion formula :-( 25G / link_speed).
413 * This conversion will provide value 1 if current
414 * link speed is 25G or 2 if 12.5G.This is done to avoid
415 * 12.5 float number conversion.
416 */
get_link_speed(u16 link_speed)417 static inline u16 get_link_speed(u16 link_speed)
418 {
419 return (link_speed == 1) ?
420 LINK_SPEED_12_5G : LINK_SPEED_25G;
421 }
422
423 /**
424 * convert_xmit_counter - calculate flit times for given xmit counter
425 * value
426 * @xmit_wait_val: current xmit counter value
427 * @link_width: width of active link
428 * @link_speed: speed of active link
429 * @return: return xmit counter value in flit times.
430 */
convert_xmit_counter(u64 xmit_wait_val,u16 link_width,u16 link_speed)431 static inline u64 convert_xmit_counter(u64 xmit_wait_val, u16 link_width,
432 u16 link_speed)
433 {
434 return (xmit_wait_val * 2 * (FACTOR_LINK_WIDTH / link_width)
435 * link_speed) / DECIMAL_FACTORING;
436 }
437 #endif /* _HFI1_MAD_H */
438