1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * This file contains preset event names from the Performance Application 28 * Programming Interface v3.5 which included the following notice: 29 * 30 * Copyright (c) 2005,6 31 * Innovative Computing Labs 32 * Computer Science Department, 33 * University of Tennessee, 34 * Knoxville, TN. 35 * All Rights Reserved. 36 * 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions are met: 40 * 41 * * Redistributions of source code must retain the above copyright notice, 42 * this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * * Neither the name of the University of Tennessee nor the names of its 47 * contributors may be used to endorse or promote products derived from 48 * this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 51 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 54 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 60 * POSSIBILITY OF SUCH DAMAGE. 61 * 62 * 63 * This open source software license conforms to the BSD License template. 64 */ 65 66 /* 67 * Portions Copyright 2009 Advanced Micro Devices, Inc. 68 * Copyright 2019 Joyent, Inc. 69 */ 70 71 /* 72 * Performance Counter Back-End for AMD Opteron and AMD Athlon 64 processors. 73 */ 74 75 #include <sys/cpuvar.h> 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/cpc_pcbe.h> 79 #include <sys/kmem.h> 80 #include <sys/sdt.h> 81 #include <sys/modctl.h> 82 #include <sys/errno.h> 83 #include <sys/debug.h> 84 #include <sys/archsystm.h> 85 #include <sys/x86_archext.h> 86 #include <sys/privregs.h> 87 #include <sys/ddi.h> 88 #include <sys/sunddi.h> 89 90 #include "opteron_pcbe_table.h" 91 #include <opteron_pcbe_cpcgen.h> 92 93 static int opt_pcbe_init(void); 94 static uint_t opt_pcbe_ncounters(void); 95 static const char *opt_pcbe_impl_name(void); 96 static const char *opt_pcbe_cpuref(void); 97 static char *opt_pcbe_list_events(uint_t picnum); 98 static char *opt_pcbe_list_attrs(void); 99 static uint64_t opt_pcbe_event_coverage(char *event); 100 static uint64_t opt_pcbe_overflow_bitmap(void); 101 static int opt_pcbe_configure(uint_t picnum, char *event, uint64_t preset, 102 uint32_t flags, uint_t nattrs, kcpc_attr_t *attrs, void **data, 103 void *token); 104 static void opt_pcbe_program(void *token); 105 static void opt_pcbe_allstop(void); 106 static void opt_pcbe_sample(void *token); 107 static void opt_pcbe_free(void *config); 108 109 static pcbe_ops_t opt_pcbe_ops = { 110 PCBE_VER_1, 111 CPC_CAP_OVERFLOW_INTERRUPT, 112 opt_pcbe_ncounters, 113 opt_pcbe_impl_name, 114 opt_pcbe_cpuref, 115 opt_pcbe_list_events, 116 opt_pcbe_list_attrs, 117 opt_pcbe_event_coverage, 118 opt_pcbe_overflow_bitmap, 119 opt_pcbe_configure, 120 opt_pcbe_program, 121 opt_pcbe_allstop, 122 opt_pcbe_sample, 123 opt_pcbe_free 124 }; 125 126 /* 127 * Base MSR addresses for the PerfEvtSel registers and the counters themselves. 128 * Add counter number to base address to get corresponding MSR address. 129 */ 130 #define PES_BASE_ADDR 0xC0010000 131 #define PIC_BASE_ADDR 0xC0010004 132 133 /* 134 * Base MSR addresses for the PerfEvtSel registers and counters. The counter and 135 * event select registers are interleaved, so one needs to multiply the counter 136 * number by two to determine what they should be set to. 137 */ 138 #define PES_EXT_BASE_ADDR 0xC0010200 139 #define PIC_EXT_BASE_ADDR 0xC0010201 140 141 /* 142 * The number of counters present depends on which CPU features are present. 143 */ 144 #define OPT_PCBE_DEF_NCOUNTERS 4 145 #define OPT_PCBE_EXT_NCOUNTERS 6 146 147 /* 148 * Define offsets and masks for the fields in the Performance 149 * Event-Select (PES) registers. 150 */ 151 #define OPT_PES_HOST_SHIFT 41 152 #define OPT_PES_GUEST_SHIFT 40 153 #define OPT_PES_EVSELHI_SHIFT 32 154 #define OPT_PES_CMASK_SHIFT 24 155 #define OPT_PES_CMASK_MASK 0xFF 156 #define OPT_PES_INV_SHIFT 23 157 #define OPT_PES_ENABLE_SHIFT 22 158 #define OPT_PES_INT_SHIFT 20 159 #define OPT_PES_PC_SHIFT 19 160 #define OPT_PES_EDGE_SHIFT 18 161 #define OPT_PES_OS_SHIFT 17 162 #define OPT_PES_USR_SHIFT 16 163 #define OPT_PES_UMASK_SHIFT 8 164 #define OPT_PES_UMASK_MASK 0xFF 165 166 #define OPT_PES_INV (1ULL << OPT_PES_INV_SHIFT) 167 #define OPT_PES_ENABLE (1ULL << OPT_PES_ENABLE_SHIFT) 168 #define OPT_PES_INT (1ULL << OPT_PES_INT_SHIFT) 169 #define OPT_PES_PC (1ULL << OPT_PES_PC_SHIFT) 170 #define OPT_PES_EDGE (1ULL << OPT_PES_EDGE_SHIFT) 171 #define OPT_PES_OS (1ULL << OPT_PES_OS_SHIFT) 172 #define OPT_PES_USR (1ULL << OPT_PES_USR_SHIFT) 173 #define OPT_PES_HOST (1ULL << OPT_PES_HOST_SHIFT) 174 #define OPT_PES_GUEST (1ULL << OPT_PES_GUEST_SHIFT) 175 176 typedef struct _opt_pcbe_config { 177 uint8_t opt_picno; /* Counter number: 0, 1, 2, or 3 */ 178 uint64_t opt_evsel; /* Event Selection register */ 179 uint64_t opt_rawpic; /* Raw counter value */ 180 } opt_pcbe_config_t; 181 182 opt_pcbe_config_t nullcfgs[OPT_PCBE_EXT_NCOUNTERS] = { 183 { 0, 0, 0 }, 184 { 1, 0, 0 }, 185 { 2, 0, 0 }, 186 { 3, 0, 0 }, 187 { 4, 0, 0 }, 188 { 5, 0, 0 }, 189 }; 190 191 typedef uint64_t (*opt_pcbe_addr_f)(uint_t); 192 193 typedef struct opt_pcbe_data { 194 uint_t opd_ncounters; 195 uint_t opd_cmask; 196 opt_pcbe_addr_f opd_pesf; 197 opt_pcbe_addr_f opd_picf; 198 } opt_pcbe_data_t; 199 200 opt_pcbe_data_t opd; 201 202 #define MASK48 0xFFFFFFFFFFFF 203 204 #define EV_END {NULL, 0} 205 #define GEN_EV_END {NULL, NULL, 0 } 206 207 /* 208 * The following Macros are used to define tables of events that are used by 209 * various families and some generic classes of events. 210 * 211 * When programming a performance counter there are two different values that we 212 * need to set: 213 * 214 * o Event - Determines the general class of event that is being used. 215 * o Unit - A further breakdown that gives more specific value. 216 * 217 * Prior to the introduction of family 17h support, all family specific events 218 * were programmed based on their event. The generic events, which tried to 219 * provide PAPI mappings to events specified an additional unit mask. 220 * 221 * Starting with Family 17h, CPU performance counters default to using both the 222 * unit mask and the event select. Generic events are always aliases to a 223 * specific event/unit pair, hence why the units for them are always zero. In 224 * addition, the naming of events in family 17h has been changed to reflect 225 * AMD's guide. While this is a departure from what people are used to, it is 226 * believed that matching the more detailed literature that folks are told to 227 * reference is more valuable. 228 */ 229 230 #define AMD_cmn_events \ 231 { "FP_dispatched_fpu_ops", 0x0 }, \ 232 { "FP_cycles_no_fpu_ops_retired", 0x1 }, \ 233 { "FP_dispatched_fpu_ops_ff", 0x2 }, \ 234 { "LS_seg_reg_load", 0x20 }, \ 235 { "LS_uarch_resync_self_modify", 0x21 }, \ 236 { "LS_uarch_resync_snoop", 0x22 }, \ 237 { "LS_buffer_2_full", 0x23 }, \ 238 { "LS_locked_operation", 0x24 }, \ 239 { "LS_retired_cflush", 0x26 }, \ 240 { "LS_retired_cpuid", 0x27 }, \ 241 { "DC_access", 0x40 }, \ 242 { "DC_miss", 0x41 }, \ 243 { "DC_refill_from_L2", 0x42 }, \ 244 { "DC_refill_from_system", 0x43 }, \ 245 { "DC_copyback", 0x44 }, \ 246 { "DC_dtlb_L1_miss_L2_hit", 0x45 }, \ 247 { "DC_dtlb_L1_miss_L2_miss", 0x46 }, \ 248 { "DC_misaligned_data_ref", 0x47 }, \ 249 { "DC_uarch_late_cancel_access", 0x48 }, \ 250 { "DC_uarch_early_cancel_access", 0x49 }, \ 251 { "DC_1bit_ecc_error_found", 0x4A }, \ 252 { "DC_dispatched_prefetch_instr", 0x4B }, \ 253 { "DC_dcache_accesses_by_locks", 0x4C }, \ 254 { "BU_memory_requests", 0x65 }, \ 255 { "BU_data_prefetch", 0x67 }, \ 256 { "BU_system_read_responses", 0x6C }, \ 257 { "BU_cpu_clk_unhalted", 0x76 }, \ 258 { "BU_internal_L2_req", 0x7D }, \ 259 { "BU_fill_req_missed_L2", 0x7E }, \ 260 { "BU_fill_into_L2", 0x7F }, \ 261 { "IC_fetch", 0x80 }, \ 262 { "IC_miss", 0x81 }, \ 263 { "IC_refill_from_L2", 0x82 }, \ 264 { "IC_refill_from_system", 0x83 }, \ 265 { "IC_itlb_L1_miss_L2_hit", 0x84 }, \ 266 { "IC_itlb_L1_miss_L2_miss", 0x85 }, \ 267 { "IC_uarch_resync_snoop", 0x86 }, \ 268 { "IC_instr_fetch_stall", 0x87 }, \ 269 { "IC_return_stack_hit", 0x88 }, \ 270 { "IC_return_stack_overflow", 0x89 }, \ 271 { "FR_retired_x86_instr_w_excp_intr", 0xC0 }, \ 272 { "FR_retired_uops", 0xC1 }, \ 273 { "FR_retired_branches_w_excp_intr", 0xC2 }, \ 274 { "FR_retired_branches_mispred", 0xC3 }, \ 275 { "FR_retired_taken_branches", 0xC4 }, \ 276 { "FR_retired_taken_branches_mispred", 0xC5 }, \ 277 { "FR_retired_far_ctl_transfer", 0xC6 }, \ 278 { "FR_retired_resyncs", 0xC7 }, \ 279 { "FR_retired_near_rets", 0xC8 }, \ 280 { "FR_retired_near_rets_mispred", 0xC9 }, \ 281 { "FR_retired_taken_branches_mispred_addr_miscomp", 0xCA },\ 282 { "FR_retired_fastpath_double_op_instr", 0xCC }, \ 283 { "FR_intr_masked_cycles", 0xCD }, \ 284 { "FR_intr_masked_while_pending_cycles", 0xCE }, \ 285 { "FR_taken_hardware_intrs", 0xCF }, \ 286 { "FR_nothing_to_dispatch", 0xD0 }, \ 287 { "FR_dispatch_stalls", 0xD1 }, \ 288 { "FR_dispatch_stall_branch_abort_to_retire", 0xD2 }, \ 289 { "FR_dispatch_stall_serialization", 0xD3 }, \ 290 { "FR_dispatch_stall_segment_load", 0xD4 }, \ 291 { "FR_dispatch_stall_reorder_buffer_full", 0xD5 }, \ 292 { "FR_dispatch_stall_resv_stations_full", 0xD6 }, \ 293 { "FR_dispatch_stall_fpu_full", 0xD7 }, \ 294 { "FR_dispatch_stall_ls_full", 0xD8 }, \ 295 { "FR_dispatch_stall_waiting_all_quiet", 0xD9 }, \ 296 { "FR_dispatch_stall_far_ctl_trsfr_resync_branch_pend", 0xDA },\ 297 { "FR_fpu_exception", 0xDB }, \ 298 { "FR_num_brkpts_dr0", 0xDC }, \ 299 { "FR_num_brkpts_dr1", 0xDD }, \ 300 { "FR_num_brkpts_dr2", 0xDE }, \ 301 { "FR_num_brkpts_dr3", 0xDF }, \ 302 { "NB_mem_ctrlr_page_access", 0xE0 }, \ 303 { "NB_mem_ctrlr_turnaround", 0xE3 }, \ 304 { "NB_mem_ctrlr_bypass_counter_saturation", 0xE4 }, \ 305 { "NB_cpu_io_to_mem_io", 0xE9 }, \ 306 { "NB_cache_block_commands", 0xEA }, \ 307 { "NB_sized_commands", 0xEB }, \ 308 { "NB_ht_bus0_bandwidth", 0xF6 } 309 310 #define AMD_FAMILY_f_events \ 311 { "BU_quadwords_written_to_system", 0x6D }, \ 312 { "FR_retired_fpu_instr", 0xCB }, \ 313 { "NB_mem_ctrlr_page_table_overflow", 0xE1 }, \ 314 { "NB_sized_blocks", 0xE5 }, \ 315 { "NB_ECC_errors", 0xE8 }, \ 316 { "NB_probe_result", 0xEC }, \ 317 { "NB_gart_events", 0xEE }, \ 318 { "NB_ht_bus1_bandwidth", 0xF7 }, \ 319 { "NB_ht_bus2_bandwidth", 0xF8 } 320 321 #define AMD_FAMILY_10h_events \ 322 { "FP_retired_sse_ops", 0x3 }, \ 323 { "FP_retired_move_ops", 0x4 }, \ 324 { "FP_retired_serialize_ops", 0x5 }, \ 325 { "FP_serialize_ops_cycles", 0x6 }, \ 326 { "LS_cancelled_store_to_load_fwd_ops", 0x2A }, \ 327 { "LS_smi_received", 0x2B }, \ 328 { "DC_dtlb_L1_hit", 0x4D }, \ 329 { "LS_ineffective_prefetch", 0x52 }, \ 330 { "LS_global_tlb_flush", 0x54 }, \ 331 { "BU_octwords_written_to_system", 0x6D }, \ 332 { "Page_size_mismatches", 0x165 }, \ 333 { "IC_eviction", 0x8B }, \ 334 { "IC_cache_lines_invalidate", 0x8C }, \ 335 { "IC_itlb_reload", 0x99 }, \ 336 { "IC_itlb_reload_aborted", 0x9A }, \ 337 { "FR_retired_mmx_sse_fp_instr", 0xCB }, \ 338 { "Retired_x87_fp_ops", 0x1C0 }, \ 339 { "IBS_ops_tagged", 0x1CF }, \ 340 { "LFENCE_inst_retired", 0x1D3 }, \ 341 { "SFENCE_inst_retired", 0x1D4 }, \ 342 { "MFENCE_inst_retired", 0x1D5 }, \ 343 { "NB_mem_ctrlr_page_table_overflow", 0xE1 }, \ 344 { "NB_mem_ctrlr_dram_cmd_slots_missed", 0xE2 }, \ 345 { "NB_thermal_status", 0xE8 }, \ 346 { "NB_probe_results_upstream_req", 0xEC }, \ 347 { "NB_gart_events", 0xEE }, \ 348 { "NB_mem_ctrlr_req", 0x1F0 }, \ 349 { "CB_cpu_to_dram_req_to_target", 0x1E0 }, \ 350 { "CB_io_to_dram_req_to_target", 0x1E1 }, \ 351 { "CB_cpu_read_cmd_latency_to_target_0_to_3", 0x1E2 }, \ 352 { "CB_cpu_read_cmd_req_to_target_0_to_3", 0x1E3 }, \ 353 { "CB_cpu_read_cmd_latency_to_target_4_to_7", 0x1E4 }, \ 354 { "CB_cpu_read_cmd_req_to_target_4_to_7", 0x1E5 }, \ 355 { "CB_cpu_cmd_latency_to_target_0_to_7", 0x1E6 }, \ 356 { "CB_cpu_req_to_target_0_to_7", 0x1E7 }, \ 357 { "NB_ht_bus1_bandwidth", 0xF7 }, \ 358 { "NB_ht_bus2_bandwidth", 0xF8 }, \ 359 { "NB_ht_bus3_bandwidth", 0x1F9 }, \ 360 { "L3_read_req", 0x4E0 }, \ 361 { "L3_miss", 0x4E1 }, \ 362 { "L3_l2_eviction_l3_fill", 0x4E2 }, \ 363 { "L3_eviction", 0x4E3 } 364 365 #define AMD_FAMILY_11h_events \ 366 { "BU_quadwords_written_to_system", 0x6D }, \ 367 { "FR_retired_mmx_fp_instr", 0xCB }, \ 368 { "NB_mem_ctrlr_page_table_events", 0xE1 }, \ 369 { "NB_thermal_status", 0xE8 }, \ 370 { "NB_probe_results_upstream_req", 0xEC }, \ 371 { "NB_dev_events", 0xEE }, \ 372 { "NB_mem_ctrlr_req", 0x1F0 } 373 374 #define AMD_cmn_generic_events \ 375 { "PAPI_br_ins", "FR_retired_branches_w_excp_intr", 0x0 },\ 376 { "PAPI_br_msp", "FR_retired_branches_mispred", 0x0 }, \ 377 { "PAPI_br_tkn", "FR_retired_taken_branches", 0x0 }, \ 378 { "PAPI_fp_ops", "FP_dispatched_fpu_ops", 0x3 }, \ 379 { "PAPI_fad_ins", "FP_dispatched_fpu_ops", 0x1 }, \ 380 { "PAPI_fml_ins", "FP_dispatched_fpu_ops", 0x2 }, \ 381 { "PAPI_fpu_idl", "FP_cycles_no_fpu_ops_retired", 0x0 }, \ 382 { "PAPI_tot_cyc", "BU_cpu_clk_unhalted", 0x0 }, \ 383 { "PAPI_tot_ins", "FR_retired_x86_instr_w_excp_intr", 0x0 }, \ 384 { "PAPI_l1_dca", "DC_access", 0x0 }, \ 385 { "PAPI_l1_dcm", "DC_miss", 0x0 }, \ 386 { "PAPI_l1_ldm", "DC_refill_from_L2", 0xe }, \ 387 { "PAPI_l1_stm", "DC_refill_from_L2", 0x10 }, \ 388 { "PAPI_l1_ica", "IC_fetch", 0x0 }, \ 389 { "PAPI_l1_icm", "IC_miss", 0x0 }, \ 390 { "PAPI_l1_icr", "IC_fetch", 0x0 }, \ 391 { "PAPI_l2_dch", "DC_refill_from_L2", 0x1e }, \ 392 { "PAPI_l2_dcm", "DC_refill_from_system", 0x1e }, \ 393 { "PAPI_l2_dcr", "DC_refill_from_L2", 0xe }, \ 394 { "PAPI_l2_dcw", "DC_refill_from_L2", 0x10 }, \ 395 { "PAPI_l2_ich", "IC_refill_from_L2", 0x0 }, \ 396 { "PAPI_l2_icm", "IC_refill_from_system", 0x0 }, \ 397 { "PAPI_l2_ldm", "DC_refill_from_system", 0xe }, \ 398 { "PAPI_l2_stm", "DC_refill_from_system", 0x10 }, \ 399 { "PAPI_res_stl", "FR_dispatch_stalls", 0x0 }, \ 400 { "PAPI_stl_icy", "FR_nothing_to_dispatch", 0x0 }, \ 401 { "PAPI_hw_int", "FR_taken_hardware_intrs", 0x0 } 402 403 #define OPT_cmn_generic_events \ 404 { "PAPI_tlb_dm", "DC_dtlb_L1_miss_L2_miss", 0x0 }, \ 405 { "PAPI_tlb_im", "IC_itlb_L1_miss_L2_miss", 0x0 }, \ 406 { "PAPI_fp_ins", "FR_retired_fpu_instr", 0xd }, \ 407 { "PAPI_vec_ins", "FR_retired_fpu_instr", 0x4 } 408 409 #define AMD_FAMILY_10h_generic_events \ 410 { "PAPI_tlb_dm", "DC_dtlb_L1_miss_L2_miss", 0x7 }, \ 411 { "PAPI_tlb_im", "IC_itlb_L1_miss_L2_miss", 0x3 }, \ 412 { "PAPI_l3_dcr", "L3_read_req", 0xf1 }, \ 413 { "PAPI_l3_icr", "L3_read_req", 0xf2 }, \ 414 { "PAPI_l3_tcr", "L3_read_req", 0xf7 }, \ 415 { "PAPI_l3_stm", "L3_miss", 0xf4 }, \ 416 { "PAPI_l3_ldm", "L3_miss", 0xf3 }, \ 417 { "PAPI_l3_tcm", "L3_miss", 0xf7 } 418 419 static const amd_event_t family_f_events[] = { 420 AMD_cmn_events, 421 AMD_FAMILY_f_events, 422 EV_END 423 }; 424 425 static const amd_event_t family_10h_events[] = { 426 AMD_cmn_events, 427 AMD_FAMILY_10h_events, 428 EV_END 429 }; 430 431 static const amd_event_t family_11h_events[] = { 432 AMD_cmn_events, 433 AMD_FAMILY_11h_events, 434 EV_END 435 }; 436 437 static const amd_generic_event_t opt_generic_events[] = { 438 AMD_cmn_generic_events, 439 OPT_cmn_generic_events, 440 GEN_EV_END 441 }; 442 443 static const amd_generic_event_t family_10h_generic_events[] = { 444 AMD_cmn_generic_events, 445 AMD_FAMILY_10h_generic_events, 446 GEN_EV_END 447 }; 448 449 /* 450 * For Family 17h, the cpcgen utility generates all of our events including ones 451 * that need specific unit codes, therefore we leave all unit codes out of 452 * these. Zen 1 and Zen 2 have different event sets that they support. 453 */ 454 static const amd_generic_event_t family_17h_zen1_papi_events[] = { 455 { "PAPI_br_cn", "ExRetCond" }, 456 { "PAPI_br_ins", "ExRetBrn" }, 457 { "PAPI_fpu_idl", "FpSchedEmpty" }, 458 { "PAPI_tot_cyc", "LsNotHaltedCyc" }, 459 { "PAPI_tot_ins", "ExRetInstr" }, 460 { "PAPI_tlb_dm", "LsL1DTlbMiss" }, 461 { "PAPI_tlb_im", "BpL1TlbMissL2Miss" }, 462 { "PAPI_tot_cyc", "LsNotHaltedCyc" }, 463 GEN_EV_END 464 }; 465 466 static const amd_generic_event_t family_17h_zen2_papi_events[] = { 467 { "PAPI_br_cn", "ExRetCond" }, 468 { "PAPI_br_ins", "ExRetBrn" }, 469 { "PAPI_tot_cyc", "LsNotHaltedCyc" }, 470 { "PAPI_tot_ins", "ExRetInstr" }, 471 { "PAPI_tlb_dm", "LsL1DTlbMiss" }, 472 { "PAPI_tlb_im", "BpL1TlbMissL2Miss" }, 473 { "PAPI_tot_cyc", "LsNotHaltedCyc" }, 474 GEN_EV_END 475 }; 476 477 478 static char *evlist; 479 static size_t evlist_sz; 480 static const amd_event_t *amd_events = NULL; 481 static uint_t amd_family, amd_model; 482 static const amd_generic_event_t *amd_generic_events = NULL; 483 484 static char amd_fam_f_rev_ae_bkdg[] = "See \"BIOS and Kernel Developer's " 485 "Guide for AMD Athlon 64 and AMD Opteron Processors\" (AMD publication 26094)"; 486 static char amd_fam_f_NPT_bkdg[] = "See \"BIOS and Kernel Developer's Guide " 487 "for AMD NPT Family 0Fh Processors\" (AMD publication 32559)"; 488 static char amd_fam_10h_bkdg[] = "See \"BIOS and Kernel Developer's Guide " 489 "(BKDG) For AMD Family 10h Processors\" (AMD publication 31116)"; 490 static char amd_fam_11h_bkdg[] = "See \"BIOS and Kernel Developer's Guide " 491 "(BKDG) For AMD Family 11h Processors\" (AMD publication 41256)"; 492 static char amd_fam_17h_zen1_reg[] = "See \"Open-Source Register Reference For " 493 "AMD Family 17h Processors Models 00h-2Fh\" (AMD publication 56255) and " 494 "amd_f17h_zen1_events(3CPC)"; 495 static char amd_fam_17h_zen2_reg[] = "See \"Preliminary Processor Programming " 496 "Reference (PPR) for AMD Family 17h Model 31h, Revision B0 Processors\" " 497 "(AMD publication 55803), \"Processor Programming Reference (PPR) for AMD " 498 "Family 17h Model 71h, Revision B0 Processors\" (AMD publication 56176), and " 499 "amd_f17h_zen2_events(3CPC)"; 500 501 static char amd_pcbe_impl_name[64]; 502 static char *amd_pcbe_cpuref; 503 504 505 #define BITS(v, u, l) \ 506 (((v) >> (l)) & ((1 << (1 + (u) - (l))) - 1)) 507 508 static uint64_t 509 opt_pcbe_pes_addr(uint_t counter) 510 { 511 ASSERT3U(counter, <, opd.opd_ncounters); 512 return (PES_BASE_ADDR + counter); 513 } 514 515 static uint64_t 516 opt_pcbe_pes_ext_addr(uint_t counter) 517 { 518 ASSERT3U(counter, <, opd.opd_ncounters); 519 return (PES_EXT_BASE_ADDR + 2 * counter); 520 } 521 522 static uint64_t 523 opt_pcbe_pic_addr(uint_t counter) 524 { 525 ASSERT3U(counter, <, opd.opd_ncounters); 526 return (PIC_BASE_ADDR + 2 * counter); 527 } 528 529 static uint64_t 530 opt_pcbe_pic_ext_addr(uint_t counter) 531 { 532 ASSERT3U(counter, <, opd.opd_ncounters); 533 return (PIC_EXT_BASE_ADDR + 2 * counter); 534 } 535 536 static int 537 opt_pcbe_init(void) 538 { 539 const amd_event_t *evp; 540 const amd_generic_event_t *gevp; 541 542 amd_family = cpuid_getfamily(CPU); 543 amd_model = cpuid_getmodel(CPU); 544 545 /* 546 * Make sure this really _is_ an Opteron or Athlon 64 system. The kernel 547 * loads this module based on its name in the module directory, but it 548 * could have been renamed. 549 */ 550 if (cpuid_getvendor(CPU) != X86_VENDOR_AMD || amd_family < 0xf) 551 return (-1); 552 553 if (amd_family == 0xf) { 554 /* Some tools expect this string for family 0fh */ 555 (void) snprintf(amd_pcbe_impl_name, sizeof (amd_pcbe_impl_name), 556 "AMD Opteron & Athlon64"); 557 } else { 558 (void) snprintf(amd_pcbe_impl_name, sizeof (amd_pcbe_impl_name), 559 "AMD Family %02xh", amd_family); 560 } 561 562 /* 563 * Determine whether or not the extended counter set is supported on 564 * this processor. 565 */ 566 if (is_x86_feature(x86_featureset, X86FSET_AMD_PCEC)) { 567 opd.opd_ncounters = OPT_PCBE_EXT_NCOUNTERS; 568 opd.opd_pesf = opt_pcbe_pes_ext_addr; 569 opd.opd_picf = opt_pcbe_pic_ext_addr; 570 } else { 571 opd.opd_ncounters = OPT_PCBE_DEF_NCOUNTERS; 572 opd.opd_pesf = opt_pcbe_pes_addr; 573 opd.opd_picf = opt_pcbe_pic_addr; 574 } 575 opd.opd_cmask = (1 << opd.opd_ncounters) - 1; 576 577 /* 578 * Figure out processor revision here and assign appropriate 579 * event configuration. 580 */ 581 582 if (amd_family == 0xf) { 583 uint32_t rev; 584 585 rev = cpuid_getchiprev(CPU); 586 587 if (X86_CHIPREV_ATLEAST(rev, X86_CHIPREV_AMD_F_REV_F)) 588 amd_pcbe_cpuref = amd_fam_f_NPT_bkdg; 589 else 590 amd_pcbe_cpuref = amd_fam_f_rev_ae_bkdg; 591 amd_events = family_f_events; 592 amd_generic_events = opt_generic_events; 593 } else if (amd_family == 0x10) { 594 amd_pcbe_cpuref = amd_fam_10h_bkdg; 595 amd_events = family_10h_events; 596 amd_generic_events = family_10h_generic_events; 597 } else if (amd_family == 0x11) { 598 amd_pcbe_cpuref = amd_fam_11h_bkdg; 599 amd_events = family_11h_events; 600 amd_generic_events = opt_generic_events; 601 } else if (amd_family == 0x17 && amd_model <= 0x2f) { 602 amd_pcbe_cpuref = amd_fam_17h_zen1_reg; 603 amd_events = opteron_pcbe_f17h_zen1_events; 604 amd_generic_events = family_17h_zen1_papi_events; 605 } else if (amd_family == 0x17 && amd_model >= 0x30 && 606 amd_model <= 0x7f) { 607 amd_pcbe_cpuref = amd_fam_17h_zen2_reg; 608 amd_events = opteron_pcbe_f17h_zen2_events; 609 amd_generic_events = family_17h_zen2_papi_events; 610 } else { 611 /* 612 * Different families have different meanings on events and even 613 * worse (like family 15h), different constraints around 614 * programming these values. 615 */ 616 return (-1); 617 } 618 619 /* 620 * Construct event list. 621 * 622 * First pass: Calculate size needed. We'll need an additional byte 623 * for the NULL pointer during the last strcat. 624 * 625 * Second pass: Copy strings. 626 */ 627 for (evp = amd_events; evp->name != NULL; evp++) 628 evlist_sz += strlen(evp->name) + 1; 629 630 for (gevp = amd_generic_events; gevp->name != NULL; gevp++) 631 evlist_sz += strlen(gevp->name) + 1; 632 633 evlist = kmem_alloc(evlist_sz + 1, KM_SLEEP); 634 evlist[0] = '\0'; 635 636 for (evp = amd_events; evp->name != NULL; evp++) { 637 (void) strcat(evlist, evp->name); 638 (void) strcat(evlist, ","); 639 } 640 641 for (gevp = amd_generic_events; gevp->name != NULL; gevp++) { 642 (void) strcat(evlist, gevp->name); 643 (void) strcat(evlist, ","); 644 } 645 646 /* 647 * Remove trailing comma. 648 */ 649 evlist[evlist_sz - 1] = '\0'; 650 651 return (0); 652 } 653 654 static uint_t 655 opt_pcbe_ncounters(void) 656 { 657 return (opd.opd_ncounters); 658 } 659 660 static const char * 661 opt_pcbe_impl_name(void) 662 { 663 return (amd_pcbe_impl_name); 664 } 665 666 static const char * 667 opt_pcbe_cpuref(void) 668 { 669 670 return (amd_pcbe_cpuref); 671 } 672 673 /*ARGSUSED*/ 674 static char * 675 opt_pcbe_list_events(uint_t picnum) 676 { 677 return (evlist); 678 } 679 680 static char * 681 opt_pcbe_list_attrs(void) 682 { 683 return ("edge,pc,inv,cmask,umask"); 684 } 685 686 static const amd_generic_event_t * 687 find_generic_event(char *name) 688 { 689 const amd_generic_event_t *gevp; 690 691 for (gevp = amd_generic_events; gevp->name != NULL; gevp++) 692 if (strcmp(name, gevp->name) == 0) 693 return (gevp); 694 695 return (NULL); 696 } 697 698 static const amd_event_t * 699 find_event(char *name) 700 { 701 const amd_event_t *evp; 702 703 for (evp = amd_events; evp->name != NULL; evp++) 704 if (strcmp(name, evp->name) == 0) 705 return (evp); 706 707 return (NULL); 708 } 709 710 /*ARGSUSED*/ 711 static uint64_t 712 opt_pcbe_event_coverage(char *event) 713 { 714 /* 715 * Check whether counter event is supported 716 */ 717 if (find_event(event) == NULL && find_generic_event(event) == NULL) 718 return (0); 719 720 /* 721 * Fortunately, all counters can count all events. 722 */ 723 return (opd.opd_cmask); 724 } 725 726 static uint64_t 727 opt_pcbe_overflow_bitmap(void) 728 { 729 /* 730 * Unfortunately, this chip cannot detect which counter overflowed, so 731 * we must act as if they all did. 732 */ 733 return (opd.opd_cmask); 734 } 735 736 /*ARGSUSED*/ 737 static int 738 opt_pcbe_configure(uint_t picnum, char *event, uint64_t preset, uint32_t flags, 739 uint_t nattrs, kcpc_attr_t *attrs, void **data, void *token) 740 { 741 opt_pcbe_config_t *cfg; 742 const amd_event_t *evp; 743 amd_event_t ev_raw = { "raw", 0}; 744 const amd_generic_event_t *gevp; 745 int i; 746 uint64_t evsel = 0, evsel_tmp = 0; 747 748 /* 749 * If we've been handed an existing configuration, we need only preset 750 * the counter value. 751 */ 752 if (*data != NULL) { 753 cfg = *data; 754 cfg->opt_rawpic = preset & MASK48; 755 return (0); 756 } 757 758 if (picnum >= opd.opd_ncounters) 759 return (CPC_INVALID_PICNUM); 760 761 if ((evp = find_event(event)) == NULL) { 762 if ((gevp = find_generic_event(event)) != NULL) { 763 evp = find_event(gevp->event); 764 ASSERT(evp != NULL); 765 766 if (nattrs > 0) 767 return (CPC_ATTRIBUTE_OUT_OF_RANGE); 768 769 evsel |= gevp->umask << OPT_PES_UMASK_SHIFT; 770 } else { 771 long tmp; 772 773 /* 774 * If ddi_strtol() likes this event, use it as a raw 775 * event code. 776 */ 777 if (ddi_strtol(event, NULL, 0, &tmp) != 0) 778 return (CPC_INVALID_EVENT); 779 780 ev_raw.emask = tmp; 781 evp = &ev_raw; 782 } 783 } 784 785 /* 786 * Configuration of EventSelect register. While on some families 787 * certain bits might not be supported (e.g. Guest/Host on family 788 * 11h), setting these bits is harmless 789 */ 790 791 /* Set GuestOnly bit to 0 and HostOnly bit to 1 */ 792 evsel &= ~OPT_PES_HOST; 793 evsel &= ~OPT_PES_GUEST; 794 795 /* Set bits [35:32] for extended part of Event Select field */ 796 evsel_tmp = evp->emask & 0x0f00; 797 evsel |= evsel_tmp << OPT_PES_EVSELHI_SHIFT; 798 799 evsel |= evp->emask & 0x00ff; 800 evsel |= evp->unit << OPT_PES_UMASK_SHIFT; 801 802 if (flags & CPC_COUNT_USER) 803 evsel |= OPT_PES_USR; 804 if (flags & CPC_COUNT_SYSTEM) 805 evsel |= OPT_PES_OS; 806 if (flags & CPC_OVF_NOTIFY_EMT) 807 evsel |= OPT_PES_INT; 808 809 for (i = 0; i < nattrs; i++) { 810 if (strcmp(attrs[i].ka_name, "edge") == 0) { 811 if (attrs[i].ka_val != 0) 812 evsel |= OPT_PES_EDGE; 813 } else if (strcmp(attrs[i].ka_name, "pc") == 0) { 814 if (attrs[i].ka_val != 0) 815 evsel |= OPT_PES_PC; 816 } else if (strcmp(attrs[i].ka_name, "inv") == 0) { 817 if (attrs[i].ka_val != 0) 818 evsel |= OPT_PES_INV; 819 } else if (strcmp(attrs[i].ka_name, "cmask") == 0) { 820 if ((attrs[i].ka_val | OPT_PES_CMASK_MASK) != 821 OPT_PES_CMASK_MASK) 822 return (CPC_ATTRIBUTE_OUT_OF_RANGE); 823 evsel |= attrs[i].ka_val << OPT_PES_CMASK_SHIFT; 824 } else if (strcmp(attrs[i].ka_name, "umask") == 0) { 825 if ((attrs[i].ka_val | OPT_PES_UMASK_MASK) != 826 OPT_PES_UMASK_MASK) 827 return (CPC_ATTRIBUTE_OUT_OF_RANGE); 828 evsel |= attrs[i].ka_val << OPT_PES_UMASK_SHIFT; 829 } else 830 return (CPC_INVALID_ATTRIBUTE); 831 } 832 833 cfg = kmem_alloc(sizeof (*cfg), KM_SLEEP); 834 835 cfg->opt_picno = picnum; 836 cfg->opt_evsel = evsel; 837 cfg->opt_rawpic = preset & MASK48; 838 839 *data = cfg; 840 return (0); 841 } 842 843 static void 844 opt_pcbe_program(void *token) 845 { 846 opt_pcbe_config_t *cfgs[OPT_PCBE_EXT_NCOUNTERS] = { &nullcfgs[0], 847 &nullcfgs[1], &nullcfgs[2], 848 &nullcfgs[3], &nullcfgs[4], 849 &nullcfgs[5] }; 850 opt_pcbe_config_t *pcfg = NULL; 851 int i; 852 ulong_t curcr4 = getcr4(); 853 854 /* 855 * Allow nonprivileged code to read the performance counters if desired. 856 */ 857 if (kcpc_allow_nonpriv(token)) 858 setcr4(curcr4 | CR4_PCE); 859 else 860 setcr4(curcr4 & ~CR4_PCE); 861 862 /* 863 * Query kernel for all configs which will be co-programmed. 864 */ 865 do { 866 pcfg = (opt_pcbe_config_t *)kcpc_next_config(token, pcfg, NULL); 867 868 if (pcfg != NULL) { 869 ASSERT(pcfg->opt_picno < opd.opd_ncounters); 870 cfgs[pcfg->opt_picno] = pcfg; 871 } 872 } while (pcfg != NULL); 873 874 /* 875 * Program in two loops. The first configures and presets the counter, 876 * and the second loop enables the counters. This ensures that the 877 * counters are all enabled as closely together in time as possible. 878 */ 879 880 for (i = 0; i < opd.opd_ncounters; i++) { 881 wrmsr(opd.opd_pesf(i), cfgs[i]->opt_evsel); 882 wrmsr(opd.opd_picf(i), cfgs[i]->opt_rawpic); 883 } 884 885 for (i = 0; i < opd.opd_ncounters; i++) { 886 wrmsr(opd.opd_pesf(i), cfgs[i]->opt_evsel | 887 (uint64_t)(uintptr_t)OPT_PES_ENABLE); 888 } 889 } 890 891 static void 892 opt_pcbe_allstop(void) 893 { 894 int i; 895 896 for (i = 0; i < opd.opd_ncounters; i++) 897 wrmsr(opd.opd_pesf(i), 0ULL); 898 899 /* 900 * Disable non-privileged access to the counter registers. 901 */ 902 setcr4(getcr4() & ~CR4_PCE); 903 } 904 905 static void 906 opt_pcbe_sample(void *token) 907 { 908 opt_pcbe_config_t *cfgs[OPT_PCBE_EXT_NCOUNTERS] = { NULL, NULL, 909 NULL, NULL, NULL, NULL }; 910 opt_pcbe_config_t *pcfg = NULL; 911 int i; 912 uint64_t curpic[OPT_PCBE_EXT_NCOUNTERS]; 913 uint64_t *addrs[OPT_PCBE_EXT_NCOUNTERS]; 914 uint64_t *tmp; 915 int64_t diff; 916 917 for (i = 0; i < opd.opd_ncounters; i++) 918 curpic[i] = rdmsr(opd.opd_picf(i)); 919 920 /* 921 * Query kernel for all configs which are co-programmed. 922 */ 923 do { 924 pcfg = (opt_pcbe_config_t *)kcpc_next_config(token, pcfg, &tmp); 925 926 if (pcfg != NULL) { 927 ASSERT3U(pcfg->opt_picno, <, opd.opd_ncounters); 928 cfgs[pcfg->opt_picno] = pcfg; 929 addrs[pcfg->opt_picno] = tmp; 930 } 931 } while (pcfg != NULL); 932 933 for (i = 0; i < opd.opd_ncounters; i++) { 934 if (cfgs[i] == NULL) 935 continue; 936 937 diff = (curpic[i] - cfgs[i]->opt_rawpic) & MASK48; 938 *addrs[i] += diff; 939 DTRACE_PROBE4(opt__pcbe__sample, int, i, uint64_t, *addrs[i], 940 uint64_t, curpic[i], uint64_t, cfgs[i]->opt_rawpic); 941 cfgs[i]->opt_rawpic = *addrs[i] & MASK48; 942 } 943 } 944 945 static void 946 opt_pcbe_free(void *config) 947 { 948 kmem_free(config, sizeof (opt_pcbe_config_t)); 949 } 950 951 952 static struct modlpcbe modlpcbe = { 953 &mod_pcbeops, 954 "AMD Performance Counters", 955 &opt_pcbe_ops 956 }; 957 958 static struct modlinkage modl = { 959 MODREV_1, 960 &modlpcbe, 961 }; 962 963 int 964 _init(void) 965 { 966 int ret; 967 968 if (opt_pcbe_init() != 0) 969 return (ENOTSUP); 970 971 if ((ret = mod_install(&modl)) != 0) 972 kmem_free(evlist, evlist_sz + 1); 973 974 return (ret); 975 } 976 977 int 978 _fini(void) 979 { 980 int ret; 981 982 if ((ret = mod_remove(&modl)) == 0) 983 kmem_free(evlist, evlist_sz + 1); 984 return (ret); 985 } 986 987 int 988 _info(struct modinfo *mi) 989 { 990 return (mod_info(&modl, mi)); 991 } 992