drivers/infiniband/hw/hfi1/mad.h

   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  */
 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  */
 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 */