LXR linux/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
  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        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
 152struct 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
 204struct 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
 213struct 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
 224struct 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
 238struct 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
 246struct 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
 254struct 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
 260struct 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
 273struct ib_cc_table_entry {
 274        __be16 entry; /* shift:2, multiplier:14 */
 275};
 276
 277struct ib_cc_table_entry_shadow {
 278        u16 entry; /* shift:2, multiplier:14 */
 279};
 280
 281struct 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
 286struct 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
 294struct 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 */
 305struct 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
 370struct vl_limit {
 371        __be16 dedicated;
 372        __be16 shared;
 373};
 374
 375struct buffer_control {
 376        __be16 reserved;
 377        __be16 overall_shared_limit;
 378        struct vl_limit vl[OPA_MAX_VLS];
 379};
 380
 381struct 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
 398void hfi1_event_pkey_change(struct hfi1_devdata *dd, u32 port);
 399void hfi1_handle_trap_timer(struct timer_list *t);
 400u16 tx_link_width(u16 link_width);
 401u64 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 */
 417static 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 */
 431static 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