1 /* 2 * Copyright(c) 2015 - 2017 Intel Corporation. 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * BSD LICENSE 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 24 * - Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * - Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in 28 * the documentation and/or other materials provided with the 29 * distribution. 30 * - Neither the name of Intel Corporation nor the names of its 31 * contributors may be used to endorse or promote products derived 32 * from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 45 * 46 */ 47 #ifndef _HFI1_MAD_H 48 #define _HFI1_MAD_H 49 50 #include <rdma/ib_pma.h> 51 #include <rdma/opa_smi.h> 52 #include <rdma/opa_port_info.h> 53 #include "opa_compat.h" 54 55 /* 56 * OPA Traps 57 */ 58 #define OPA_TRAP_GID_NOW_IN_SERVICE cpu_to_be16(64) 59 #define OPA_TRAP_GID_OUT_OF_SERVICE cpu_to_be16(65) 60 #define OPA_TRAP_ADD_MULTICAST_GROUP cpu_to_be16(66) 61 #define OPA_TRAL_DEL_MULTICAST_GROUP cpu_to_be16(67) 62 #define OPA_TRAP_UNPATH cpu_to_be16(68) 63 #define OPA_TRAP_REPATH cpu_to_be16(69) 64 #define OPA_TRAP_PORT_CHANGE_STATE cpu_to_be16(128) 65 #define OPA_TRAP_LINK_INTEGRITY cpu_to_be16(129) 66 #define OPA_TRAP_EXCESSIVE_BUFFER_OVERRUN cpu_to_be16(130) 67 #define OPA_TRAP_FLOW_WATCHDOG cpu_to_be16(131) 68 #define OPA_TRAP_CHANGE_CAPABILITY cpu_to_be16(144) 69 #define OPA_TRAP_CHANGE_SYSGUID cpu_to_be16(145) 70 #define OPA_TRAP_BAD_M_KEY cpu_to_be16(256) 71 #define OPA_TRAP_BAD_P_KEY cpu_to_be16(257) 72 #define OPA_TRAP_BAD_Q_KEY cpu_to_be16(258) 73 #define OPA_TRAP_SWITCH_BAD_PKEY cpu_to_be16(259) 74 #define OPA_SMA_TRAP_DATA_LINK_WIDTH cpu_to_be16(2048) 75 76 /* 77 * Generic trap/notice other local changes flags (trap 144). 78 */ 79 #define OPA_NOTICE_TRAP_LWDE_CHG 0x08 /* Link Width Downgrade Enable 80 * changed 81 */ 82 #define OPA_NOTICE_TRAP_LSE_CHG 0x04 /* Link Speed Enable changed */ 83 #define OPA_NOTICE_TRAP_LWE_CHG 0x02 /* Link Width Enable changed */ 84 #define OPA_NOTICE_TRAP_NODE_DESC_CHG 0x01 85 86 struct opa_mad_notice_attr { 87 u8 generic_type; 88 u8 prod_type_msb; 89 __be16 prod_type_lsb; 90 __be16 trap_num; 91 __be16 toggle_count; 92 __be32 issuer_lid; 93 __be32 reserved1; 94 union ib_gid issuer_gid; 95 96 union { 97 struct { 98 u8 details[64]; 99 } raw_data; 100 101 struct { 102 union ib_gid gid; 103 } __packed ntc_64_65_66_67; 104 105 struct { 106 __be32 lid; 107 } __packed ntc_128; 108 109 struct { 110 __be32 lid; /* where violation happened */ 111 u8 port_num; /* where violation happened */ 112 } __packed ntc_129_130_131; 113 114 struct { 115 __be32 lid; /* LID where change occurred */ 116 __be32 new_cap_mask; /* new capability mask */ 117 __be16 reserved2; 118 __be16 cap_mask3; 119 __be16 change_flags; /* low 4 bits only */ 120 } __packed ntc_144; 121 122 struct { 123 __be64 new_sys_guid; 124 __be32 lid; /* lid where sys guid changed */ 125 } __packed ntc_145; 126 127 struct { 128 __be32 lid; 129 __be32 dr_slid; 130 u8 method; 131 u8 dr_trunc_hop; 132 __be16 attr_id; 133 __be32 attr_mod; 134 __be64 mkey; 135 u8 dr_rtn_path[30]; 136 } __packed ntc_256; 137 138 struct { 139 __be32 lid1; 140 __be32 lid2; 141 __be32 key; 142 u8 sl; /* SL: high 5 bits */ 143 u8 reserved3[3]; 144 union ib_gid gid1; 145 union ib_gid gid2; 146 __be32 qp1; /* high 8 bits reserved */ 147 __be32 qp2; /* high 8 bits reserved */ 148 } __packed ntc_257_258; 149 150 struct { 151 __be16 flags; /* low 8 bits reserved */ 152 __be16 pkey; 153 __be32 lid1; 154 __be32 lid2; 155 u8 sl; /* SL: high 5 bits */ 156 u8 reserved4[3]; 157 union ib_gid gid1; 158 union ib_gid gid2; 159 __be32 qp1; /* high 8 bits reserved */ 160 __be32 qp2; /* high 8 bits reserved */ 161 } __packed ntc_259; 162 163 struct { 164 __be32 lid; 165 } __packed ntc_2048; 166 167 }; 168 u8 class_data[]; 169 }; 170 171 #define IB_VLARB_LOWPRI_0_31 1 172 #define IB_VLARB_LOWPRI_32_63 2 173 #define IB_VLARB_HIGHPRI_0_31 3 174 #define IB_VLARB_HIGHPRI_32_63 4 175 176 #define OPA_MAX_PREEMPT_CAP 32 177 #define OPA_VLARB_LOW_ELEMENTS 0 178 #define OPA_VLARB_HIGH_ELEMENTS 1 179 #define OPA_VLARB_PREEMPT_ELEMENTS 2 180 #define OPA_VLARB_PREEMPT_MATRIX 3 181 182 #define IB_PMA_PORT_COUNTERS_CONG cpu_to_be16(0xFF00) 183 #define LINK_SPEED_25G 1 184 #define LINK_SPEED_12_5G 2 185 #define LINK_WIDTH_DEFAULT 4 186 #define DECIMAL_FACTORING 1000 187 /* 188 * The default link width is multiplied by 1000 189 * to get accurate value after division. 190 */ 191 #define FACTOR_LINK_WIDTH (LINK_WIDTH_DEFAULT * DECIMAL_FACTORING) 192 193 struct ib_pma_portcounters_cong { 194 u8 reserved; 195 u8 reserved1; 196 __be16 port_check_rate; 197 __be16 symbol_error_counter; 198 u8 link_error_recovery_counter; 199 u8 link_downed_counter; 200 __be16 port_rcv_errors; 201 __be16 port_rcv_remphys_errors; 202 __be16 port_rcv_switch_relay_errors; 203 __be16 port_xmit_discards; 204 u8 port_xmit_constraint_errors; 205 u8 port_rcv_constraint_errors; 206 u8 reserved2; 207 u8 link_overrun_errors; /* LocalLink: 7:4, BufferOverrun: 3:0 */ 208 __be16 reserved3; 209 __be16 vl15_dropped; 210 __be64 port_xmit_data; 211 __be64 port_rcv_data; 212 __be64 port_xmit_packets; 213 __be64 port_rcv_packets; 214 __be64 port_xmit_wait; 215 __be64 port_adr_events; 216 } __packed; 217 218 #define IB_SMP_UNSUP_VERSION cpu_to_be16(0x0004) 219 #define IB_SMP_UNSUP_METHOD cpu_to_be16(0x0008) 220 #define IB_SMP_UNSUP_METH_ATTR cpu_to_be16(0x000C) 221 #define IB_SMP_INVALID_FIELD cpu_to_be16(0x001C) 222 223 #define OPA_MAX_PREEMPT_CAP 32 224 #define OPA_VLARB_LOW_ELEMENTS 0 225 #define OPA_VLARB_HIGH_ELEMENTS 1 226 #define OPA_VLARB_PREEMPT_ELEMENTS 2 227 #define OPA_VLARB_PREEMPT_MATRIX 3 228 229 #define HFI1_XMIT_RATE_UNSUPPORTED 0x0 230 #define HFI1_XMIT_RATE_PICO 0x7 231 /* number of 4nsec cycles equaling 2secs */ 232 #define HFI1_CONG_TIMER_PSINTERVAL 0x1DCD64EC 233 234 #define IB_CC_SVCTYPE_RC 0x0 235 #define IB_CC_SVCTYPE_UC 0x1 236 #define IB_CC_SVCTYPE_RD 0x2 237 #define IB_CC_SVCTYPE_UD 0x3 238 239 /* 240 * There should be an equivalent IB #define for the following, but 241 * I cannot find it. 242 */ 243 #define OPA_CC_LOG_TYPE_HFI 2 244 245 struct opa_hfi1_cong_log_event_internal { 246 u32 lqpn; 247 u32 rqpn; 248 u8 sl; 249 u8 svc_type; 250 u32 rlid; 251 u64 timestamp; /* wider than 32 bits to detect 32 bit rollover */ 252 }; 253 254 struct opa_hfi1_cong_log_event { 255 u8 local_qp_cn_entry[3]; 256 u8 remote_qp_number_cn_entry[3]; 257 u8 sl_svc_type_cn_entry; /* 5 bits SL, 3 bits svc type */ 258 u8 reserved; 259 __be32 remote_lid_cn_entry; 260 __be32 timestamp_cn_entry; 261 } __packed; 262 263 #define OPA_CONG_LOG_ELEMS 96 264 265 struct opa_hfi1_cong_log { 266 u8 log_type; 267 u8 congestion_flags; 268 __be16 threshold_event_counter; 269 __be32 current_time_stamp; 270 u8 threshold_cong_event_map[OPA_MAX_SLS / 8]; 271 struct opa_hfi1_cong_log_event events[OPA_CONG_LOG_ELEMS]; 272 } __packed; 273 274 #define IB_CC_TABLE_CAP_DEFAULT 31 275 276 /* Port control flags */ 277 #define IB_CC_CCS_PC_SL_BASED 0x01 278 279 struct opa_congestion_setting_entry { 280 u8 ccti_increase; 281 u8 reserved; 282 __be16 ccti_timer; 283 u8 trigger_threshold; 284 u8 ccti_min; /* min CCTI for cc table */ 285 } __packed; 286 287 struct opa_congestion_setting_entry_shadow { 288 u8 ccti_increase; 289 u8 reserved; 290 u16 ccti_timer; 291 u8 trigger_threshold; 292 u8 ccti_min; /* min CCTI for cc table */ 293 } __packed; 294 295 struct opa_congestion_setting_attr { 296 __be32 control_map; 297 __be16 port_control; 298 struct opa_congestion_setting_entry entries[OPA_MAX_SLS]; 299 } __packed; 300 301 struct opa_congestion_setting_attr_shadow { 302 u32 control_map; 303 u16 port_control; 304 struct opa_congestion_setting_entry_shadow entries[OPA_MAX_SLS]; 305 } __packed; 306 307 #define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1 308 #define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1 309 310 /* 64 Congestion Control table entries in a single MAD */ 311 #define IB_CCT_ENTRIES 64 312 #define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2) 313 314 struct ib_cc_table_entry { 315 __be16 entry; /* shift:2, multiplier:14 */ 316 }; 317 318 struct ib_cc_table_entry_shadow { 319 u16 entry; /* shift:2, multiplier:14 */ 320 }; 321 322 struct ib_cc_table_attr { 323 __be16 ccti_limit; /* max CCTI for cc table */ 324 struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES]; 325 } __packed; 326 327 struct ib_cc_table_attr_shadow { 328 u16 ccti_limit; /* max CCTI for cc table */ 329 struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES]; 330 } __packed; 331 332 #define CC_TABLE_SHADOW_MAX \ 333 (IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES) 334 335 struct cc_table_shadow { 336 u16 ccti_limit; /* max CCTI for cc table */ 337 struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX]; 338 } __packed; 339 340 /* 341 * struct cc_state combines the (active) per-port congestion control 342 * table, and the (active) per-SL congestion settings. cc_state data 343 * may need to be read in code paths that we want to be fast, so it 344 * is an RCU protected structure. 345 */ 346 struct cc_state { 347 struct rcu_head rcu; 348 struct cc_table_shadow cct; 349 struct opa_congestion_setting_attr_shadow cong_setting; 350 }; 351 352 /* 353 * OPA BufferControl MAD 354 */ 355 356 /* attribute modifier macros */ 357 #define OPA_AM_NPORT_SHIFT 24 358 #define OPA_AM_NPORT_MASK 0xff 359 #define OPA_AM_NPORT_SMASK (OPA_AM_NPORT_MASK << OPA_AM_NPORT_SHIFT) 360 #define OPA_AM_NPORT(am) (((am) >> OPA_AM_NPORT_SHIFT) & \ 361 OPA_AM_NPORT_MASK) 362 363 #define OPA_AM_NBLK_SHIFT 24 364 #define OPA_AM_NBLK_MASK 0xff 365 #define OPA_AM_NBLK_SMASK (OPA_AM_NBLK_MASK << OPA_AM_NBLK_SHIFT) 366 #define OPA_AM_NBLK(am) (((am) >> OPA_AM_NBLK_SHIFT) & \ 367 OPA_AM_NBLK_MASK) 368 369 #define OPA_AM_START_BLK_SHIFT 0 370 #define OPA_AM_START_BLK_MASK 0xff 371 #define OPA_AM_START_BLK_SMASK (OPA_AM_START_BLK_MASK << \ 372 OPA_AM_START_BLK_SHIFT) 373 #define OPA_AM_START_BLK(am) (((am) >> OPA_AM_START_BLK_SHIFT) & \ 374 OPA_AM_START_BLK_MASK) 375 376 #define OPA_AM_PORTNUM_SHIFT 0 377 #define OPA_AM_PORTNUM_MASK 0xff 378 #define OPA_AM_PORTNUM_SMASK (OPA_AM_PORTNUM_MASK << OPA_AM_PORTNUM_SHIFT) 379 #define OPA_AM_PORTNUM(am) (((am) >> OPA_AM_PORTNUM_SHIFT) & \ 380 OPA_AM_PORTNUM_MASK) 381 382 #define OPA_AM_ASYNC_SHIFT 12 383 #define OPA_AM_ASYNC_MASK 0x1 384 #define OPA_AM_ASYNC_SMASK (OPA_AM_ASYNC_MASK << OPA_AM_ASYNC_SHIFT) 385 #define OPA_AM_ASYNC(am) (((am) >> OPA_AM_ASYNC_SHIFT) & \ 386 OPA_AM_ASYNC_MASK) 387 388 #define OPA_AM_START_SM_CFG_SHIFT 9 389 #define OPA_AM_START_SM_CFG_MASK 0x1 390 #define OPA_AM_START_SM_CFG_SMASK (OPA_AM_START_SM_CFG_MASK << \ 391 OPA_AM_START_SM_CFG_SHIFT) 392 #define OPA_AM_START_SM_CFG(am) (((am) >> OPA_AM_START_SM_CFG_SHIFT) \ 393 & OPA_AM_START_SM_CFG_MASK) 394 395 #define OPA_AM_CI_ADDR_SHIFT 19 396 #define OPA_AM_CI_ADDR_MASK 0xfff 397 #define OPA_AM_CI_ADDR_SMASK (OPA_AM_CI_ADDR_MASK << OPA_CI_ADDR_SHIFT) 398 #define OPA_AM_CI_ADDR(am) (((am) >> OPA_AM_CI_ADDR_SHIFT) & \ 399 OPA_AM_CI_ADDR_MASK) 400 401 #define OPA_AM_CI_LEN_SHIFT 13 402 #define OPA_AM_CI_LEN_MASK 0x3f 403 #define OPA_AM_CI_LEN_SMASK (OPA_AM_CI_LEN_MASK << OPA_CI_LEN_SHIFT) 404 #define OPA_AM_CI_LEN(am) (((am) >> OPA_AM_CI_LEN_SHIFT) & \ 405 OPA_AM_CI_LEN_MASK) 406 407 /* error info macros */ 408 #define OPA_EI_STATUS_SMASK 0x80 409 #define OPA_EI_CODE_SMASK 0x0f 410 411 struct vl_limit { 412 __be16 dedicated; 413 __be16 shared; 414 }; 415 416 struct buffer_control { 417 __be16 reserved; 418 __be16 overall_shared_limit; 419 struct vl_limit vl[OPA_MAX_VLS]; 420 }; 421 422 struct sc2vlnt { 423 u8 vlnt[32]; /* 5 bit VL, 3 bits reserved */ 424 }; 425 426 /* 427 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields 428 * which specify the N'th counter's capabilities. See ch. 16.1.3.2. 429 * We support 5 counters which only count the mandatory quantities. 430 */ 431 #define COUNTER_MASK(q, n) (q << ((9 - n) * 3)) 432 #define COUNTER_MASK0_9 \ 433 cpu_to_be32(COUNTER_MASK(1, 0) | \ 434 COUNTER_MASK(1, 1) | \ 435 COUNTER_MASK(1, 2) | \ 436 COUNTER_MASK(1, 3) | \ 437 COUNTER_MASK(1, 4)) 438 439 void hfi1_event_pkey_change(struct hfi1_devdata *dd, u8 port); 440 void hfi1_handle_trap_timer(struct timer_list *t); 441 u16 tx_link_width(u16 link_width); 442 u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd, u16 link_width, 443 u16 link_speed, int vl); 444 /** 445 * get_link_speed - determine whether 12.5G or 25G speed 446 * @link_speed: the speed of active link 447 * @return: Return 2 if link speed identified as 12.5G 448 * or return 1 if link speed is 25G. 449 * 450 * The function indirectly calculate required link speed 451 * value for convert_xmit_counter function. If the link 452 * speed is 25G, the function return as 1 as it is required 453 * by xmit counter conversion formula :-( 25G / link_speed). 454 * This conversion will provide value 1 if current 455 * link speed is 25G or 2 if 12.5G.This is done to avoid 456 * 12.5 float number conversion. 457 */ 458 static inline u16 get_link_speed(u16 link_speed) 459 { 460 return (link_speed == 1) ? 461 LINK_SPEED_12_5G : LINK_SPEED_25G; 462 } 463 464 /** 465 * convert_xmit_counter - calculate flit times for given xmit counter 466 * value 467 * @xmit_wait_val: current xmit counter value 468 * @link_width: width of active link 469 * @link_speed: speed of active link 470 * @return: return xmit counter value in flit times. 471 */ 472 static inline u64 convert_xmit_counter(u64 xmit_wait_val, u16 link_width, 473 u16 link_speed) 474 { 475 return (xmit_wait_val * 2 * (FACTOR_LINK_WIDTH / link_width) 476 * link_speed) / DECIMAL_FACTORING; 477 } 478 #endif /* _HFI1_MAD_H */ 479