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
45struct 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};
128
129#define IB_VLARB_LOWPRI_0_31 1
130#define IB_VLARB_LOWPRI_32_63 2
131#define IB_VLARB_HIGHPRI_0_31 3
132#define IB_VLARB_HIGHPRI_32_63 4
133
134#define OPA_MAX_PREEMPT_CAP 32
135#define OPA_VLARB_LOW_ELEMENTS 0
136#define OPA_VLARB_HIGH_ELEMENTS 1
137#define OPA_VLARB_PREEMPT_ELEMENTS 2
138#define OPA_VLARB_PREEMPT_MATRIX 3
139
140#define IB_PMA_PORT_COUNTERS_CONG cpu_to_be16(0xFF00)
141#define LINK_SPEED_25G 1
142#define LINK_SPEED_12_5G 2
143#define LINK_WIDTH_DEFAULT 4
144#define DECIMAL_FACTORING 1000
145/*
146 * The default link width is multiplied by 1000
147 * to get accurate value after division.
148 */
149#define FACTOR_LINK_WIDTH (LINK_WIDTH_DEFAULT * DECIMAL_FACTORING)
150
151struct ib_pma_portcounters_cong {
152 u8 reserved;
153 u8 reserved1;
154 __be16 port_check_rate;
155 __be16 symbol_error_counter;
156 u8 link_error_recovery_counter;
157 u8 link_downed_counter;
158 __be16 port_rcv_errors;
159 __be16 port_rcv_remphys_errors;
160 __be16 port_rcv_switch_relay_errors;
161 __be16 port_xmit_discards;
162 u8 port_xmit_constraint_errors;
163 u8 port_rcv_constraint_errors;
164 u8 reserved2;
165 u8 link_overrun_errors; /* LocalLink: 7:4, BufferOverrun: 3:0 */
166 __be16 reserved3;
167 __be16 vl15_dropped;
168 __be64 port_xmit_data;
169 __be64 port_rcv_data;
170 __be64 port_xmit_packets;
171 __be64 port_rcv_packets;
172 __be64 port_xmit_wait;
173 __be64 port_adr_events;
174} __packed;
175
176#define IB_SMP_UNSUP_VERSION cpu_to_be16(0x0004)
177#define IB_SMP_UNSUP_METHOD cpu_to_be16(0x0008)
178#define IB_SMP_UNSUP_METH_ATTR cpu_to_be16(0x000C)
179#define IB_SMP_INVALID_FIELD cpu_to_be16(0x001C)
180
181#define OPA_MAX_PREEMPT_CAP 32
182#define OPA_VLARB_LOW_ELEMENTS 0
183#define OPA_VLARB_HIGH_ELEMENTS 1
184#define OPA_VLARB_PREEMPT_ELEMENTS 2
185#define OPA_VLARB_PREEMPT_MATRIX 3
186
187#define HFI1_XMIT_RATE_UNSUPPORTED 0x0
188#define HFI1_XMIT_RATE_PICO 0x7
189/* number of 4nsec cycles equaling 2secs */
190#define HFI1_CONG_TIMER_PSINTERVAL 0x1DCD64EC
191
192#define IB_CC_SVCTYPE_RC 0x0
193#define IB_CC_SVCTYPE_UC 0x1
194#define IB_CC_SVCTYPE_RD 0x2
195#define IB_CC_SVCTYPE_UD 0x3
196
197/*
198 * There should be an equivalent IB #define for the following, but
199 * I cannot find it.
200 */
201#define OPA_CC_LOG_TYPE_HFI 2
202
203struct opa_hfi1_cong_log_event_internal {
204 u32 lqpn;
205 u32 rqpn;
206 u8 sl;
207 u8 svc_type;
208 u32 rlid;
209 u64 timestamp; /* wider than 32 bits to detect 32 bit rollover */
210};
211
212struct opa_hfi1_cong_log_event {
213 u8 local_qp_cn_entry[3];
214 u8 remote_qp_number_cn_entry[3];
215 u8 sl_svc_type_cn_entry; /* 5 bits SL, 3 bits svc type */
216 u8 reserved;
217 __be32 remote_lid_cn_entry;
218 __be32 timestamp_cn_entry;
219} __packed;
220
221#define OPA_CONG_LOG_ELEMS 96
222
223struct opa_hfi1_cong_log {
224 u8 log_type;
225 u8 congestion_flags;
226 __be16 threshold_event_counter;
227 __be32 current_time_stamp;
228 u8 threshold_cong_event_map[OPA_MAX_SLS / 8];
229 struct opa_hfi1_cong_log_event events[OPA_CONG_LOG_ELEMS];
230} __packed;
231
232#define IB_CC_TABLE_CAP_DEFAULT 31
233
234/* Port control flags */
235#define IB_CC_CCS_PC_SL_BASED 0x01
236
237struct opa_congestion_setting_entry {
238 u8 ccti_increase;
239 u8 reserved;
240 __be16 ccti_timer;
241 u8 trigger_threshold;
242 u8 ccti_min; /* min CCTI for cc table */
243} __packed;
244
245struct opa_congestion_setting_entry_shadow {
246 u8 ccti_increase;
247 u8 reserved;
248 u16 ccti_timer;
249 u8 trigger_threshold;
250 u8 ccti_min; /* min CCTI for cc table */
251} __packed;
252
253struct opa_congestion_setting_attr {
254 __be32 control_map;
255 __be16 port_control;
256 struct opa_congestion_setting_entry entries[OPA_MAX_SLS];
257} __packed;
258
259struct opa_congestion_setting_attr_shadow {
260 u32 control_map;
261 u16 port_control;
262 struct opa_congestion_setting_entry_shadow entries[OPA_MAX_SLS];
263} __packed;
264
265#define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1
266#define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1
267
268/* 64 Congestion Control table entries in a single MAD */
269#define IB_CCT_ENTRIES 64
270#define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2)
271
272struct ib_cc_table_entry {
273 __be16 entry; /* shift:2, multiplier:14 */
274};
275
276struct ib_cc_table_entry_shadow {
277 u16 entry; /* shift:2, multiplier:14 */
278};
279
280struct ib_cc_table_attr {
281 __be16 ccti_limit; /* max CCTI for cc table */
282 struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES];
283} __packed;
284
285struct ib_cc_table_attr_shadow {
286 u16 ccti_limit; /* max CCTI for cc table */
287 struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES];
288} __packed;
289
290#define CC_TABLE_SHADOW_MAX \
291 (IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES)
292
293struct cc_table_shadow {
294 u16 ccti_limit; /* max CCTI for cc table */
295 struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX];
296} __packed;
297
298/*
299 * struct cc_state combines the (active) per-port congestion control
300 * table, and the (active) per-SL congestion settings. cc_state data
301 * may need to be read in code paths that we want to be fast, so it
302 * is an RCU protected structure.
303 */
304struct cc_state {
305 struct rcu_head rcu;
306 struct cc_table_shadow cct;
307 struct opa_congestion_setting_attr_shadow cong_setting;
308};
309
310/*
311 * OPA BufferControl MAD
312 */
313
314/* attribute modifier macros */
315#define OPA_AM_NPORT_SHIFT 24
316#define OPA_AM_NPORT_MASK 0xff
317#define OPA_AM_NPORT_SMASK (OPA_AM_NPORT_MASK << OPA_AM_NPORT_SHIFT)
318#define OPA_AM_NPORT(am) (((am) >> OPA_AM_NPORT_SHIFT) & \
319 OPA_AM_NPORT_MASK)
320
321#define OPA_AM_NBLK_SHIFT 24
322#define OPA_AM_NBLK_MASK 0xff
323#define OPA_AM_NBLK_SMASK (OPA_AM_NBLK_MASK << OPA_AM_NBLK_SHIFT)
324#define OPA_AM_NBLK(am) (((am) >> OPA_AM_NBLK_SHIFT) & \
325 OPA_AM_NBLK_MASK)
326
327#define OPA_AM_START_BLK_SHIFT 0
328#define OPA_AM_START_BLK_MASK 0xff
329#define OPA_AM_START_BLK_SMASK (OPA_AM_START_BLK_MASK << \
330 OPA_AM_START_BLK_SHIFT)
331#define OPA_AM_START_BLK(am) (((am) >> OPA_AM_START_BLK_SHIFT) & \
332 OPA_AM_START_BLK_MASK)
333
334#define OPA_AM_PORTNUM_SHIFT 0
335#define OPA_AM_PORTNUM_MASK 0xff
336#define OPA_AM_PORTNUM_SMASK (OPA_AM_PORTNUM_MASK << OPA_AM_PORTNUM_SHIFT)
337#define OPA_AM_PORTNUM(am) (((am) >> OPA_AM_PORTNUM_SHIFT) & \
338 OPA_AM_PORTNUM_MASK)
339
340#define OPA_AM_ASYNC_SHIFT 12
341#define OPA_AM_ASYNC_MASK 0x1
342#define OPA_AM_ASYNC_SMASK (OPA_AM_ASYNC_MASK << OPA_AM_ASYNC_SHIFT)
343#define OPA_AM_ASYNC(am) (((am) >> OPA_AM_ASYNC_SHIFT) & \
344 OPA_AM_ASYNC_MASK)
345
346#define OPA_AM_START_SM_CFG_SHIFT 9
347#define OPA_AM_START_SM_CFG_MASK 0x1
348#define OPA_AM_START_SM_CFG_SMASK (OPA_AM_START_SM_CFG_MASK << \
349 OPA_AM_START_SM_CFG_SHIFT)
350#define OPA_AM_START_SM_CFG(am) (((am) >> OPA_AM_START_SM_CFG_SHIFT) \
351 & OPA_AM_START_SM_CFG_MASK)
352
353#define OPA_AM_CI_ADDR_SHIFT 19
354#define OPA_AM_CI_ADDR_MASK 0xfff
355#define OPA_AM_CI_ADDR_SMASK (OPA_AM_CI_ADDR_MASK << OPA_CI_ADDR_SHIFT)
356#define OPA_AM_CI_ADDR(am) (((am) >> OPA_AM_CI_ADDR_SHIFT) & \
357 OPA_AM_CI_ADDR_MASK)
358
359#define OPA_AM_CI_LEN_SHIFT 13
360#define OPA_AM_CI_LEN_MASK 0x3f
361#define OPA_AM_CI_LEN_SMASK (OPA_AM_CI_LEN_MASK << OPA_CI_LEN_SHIFT)
362#define OPA_AM_CI_LEN(am) (((am) >> OPA_AM_CI_LEN_SHIFT) & \
363 OPA_AM_CI_LEN_MASK)
364
365/* error info macros */
366#define OPA_EI_STATUS_SMASK 0x80
367#define OPA_EI_CODE_SMASK 0x0f
368
369struct vl_limit {
370 __be16 dedicated;
371 __be16 shared;
372};
373
374struct buffer_control {
375 __be16 reserved;
376 __be16 overall_shared_limit;
377 struct vl_limit vl[OPA_MAX_VLS];
378};
379
380struct sc2vlnt {
381 u8 vlnt[32]; /* 5 bit VL, 3 bits reserved */
382};
383
384/*
385 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
386 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
387 * We support 5 counters which only count the mandatory quantities.
388 */
389#define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
390#define COUNTER_MASK0_9 \
391 cpu_to_be32(COUNTER_MASK(1, 0) | \
392 COUNTER_MASK(1, 1) | \
393 COUNTER_MASK(1, 2) | \
394 COUNTER_MASK(1, 3) | \
395 COUNTER_MASK(1, 4))
396
397void hfi1_event_pkey_change(struct hfi1_devdata *dd, u32 port);
398void hfi1_handle_trap_timer(struct timer_list *t);
399u16 tx_link_width(u16 link_width);
400u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd, u16 link_width,
401 u16 link_speed, int vl);
402/**
403 * get_link_speed - determine whether 12.5G or 25G speed
404 * @link_speed: the speed of active link
405 * @return: Return 2 if link speed identified as 12.5G
406 * or return 1 if link speed is 25G.
407 *
408 * The function indirectly calculate required link speed
409 * value for convert_xmit_counter function. If the link
410 * speed is 25G, the function return as 1 as it is required
411 * by xmit counter conversion formula :-( 25G / link_speed).
412 * This conversion will provide value 1 if current
413 * link speed is 25G or 2 if 12.5G.This is done to avoid
414 * 12.5 float number conversion.
415 */
416static inline u16 get_link_speed(u16 link_speed)
417{
418 return (link_speed == 1) ?
419 LINK_SPEED_12_5G : LINK_SPEED_25G;
420}
421
422/**
423 * convert_xmit_counter - calculate flit times for given xmit counter
424 * value
425 * @xmit_wait_val: current xmit counter value
426 * @link_width: width of active link
427 * @link_speed: speed of active link
428 * @return: return xmit counter value in flit times.
429 */
430static inline u64 convert_xmit_counter(u64 xmit_wait_val, u16 link_width,
431 u16 link_speed)
432{
433 return (xmit_wait_val * 2 * (FACTOR_LINK_WIDTH / link_width)
434 * link_speed) / DECIMAL_FACTORING;
435}
436#endif /* _HFI1_MAD_H */
437

source code of linux/drivers/infiniband/hw/hfi1/mad.h