1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. 4 */ 5 6 #ifndef _CORESIGHT_CORESIGHT_ETM_H 7 #define _CORESIGHT_CORESIGHT_ETM_H 8 9 #include <asm/local.h> 10 #include <linux/spinlock.h> 11 #include "coresight-priv.h" 12 13 /* 14 * Device registers: 15 * 0x000 - 0x2FC: Trace registers 16 * 0x300 - 0x314: Management registers 17 * 0x318 - 0xEFC: Trace registers 18 * 0xF00: Management registers 19 * 0xFA0 - 0xFA4: Trace registers 20 * 0xFA8 - 0xFFC: Management registers 21 */ 22 /* Trace registers (0x000-0x2FC) */ 23 /* Main control and configuration registers */ 24 #define TRCPRGCTLR 0x004 25 #define TRCPROCSELR 0x008 26 #define TRCSTATR 0x00C 27 #define TRCCONFIGR 0x010 28 #define TRCAUXCTLR 0x018 29 #define TRCEVENTCTL0R 0x020 30 #define TRCEVENTCTL1R 0x024 31 #define TRCSTALLCTLR 0x02C 32 #define TRCTSCTLR 0x030 33 #define TRCSYNCPR 0x034 34 #define TRCCCCTLR 0x038 35 #define TRCBBCTLR 0x03C 36 #define TRCTRACEIDR 0x040 37 #define TRCQCTLR 0x044 38 /* Filtering control registers */ 39 #define TRCVICTLR 0x080 40 #define TRCVIIECTLR 0x084 41 #define TRCVISSCTLR 0x088 42 #define TRCVIPCSSCTLR 0x08C 43 #define TRCVDCTLR 0x0A0 44 #define TRCVDSACCTLR 0x0A4 45 #define TRCVDARCCTLR 0x0A8 46 /* Derived resources registers */ 47 #define TRCSEQEVRn(n) (0x100 + (n * 4)) 48 #define TRCSEQRSTEVR 0x118 49 #define TRCSEQSTR 0x11C 50 #define TRCEXTINSELR 0x120 51 #define TRCCNTRLDVRn(n) (0x140 + (n * 4)) 52 #define TRCCNTCTLRn(n) (0x150 + (n * 4)) 53 #define TRCCNTVRn(n) (0x160 + (n * 4)) 54 /* ID registers */ 55 #define TRCIDR8 0x180 56 #define TRCIDR9 0x184 57 #define TRCIDR10 0x188 58 #define TRCIDR11 0x18C 59 #define TRCIDR12 0x190 60 #define TRCIDR13 0x194 61 #define TRCIMSPEC0 0x1C0 62 #define TRCIMSPECn(n) (0x1C0 + (n * 4)) 63 #define TRCIDR0 0x1E0 64 #define TRCIDR1 0x1E4 65 #define TRCIDR2 0x1E8 66 #define TRCIDR3 0x1EC 67 #define TRCIDR4 0x1F0 68 #define TRCIDR5 0x1F4 69 #define TRCIDR6 0x1F8 70 #define TRCIDR7 0x1FC 71 /* Resource selection registers */ 72 #define TRCRSCTLRn(n) (0x200 + (n * 4)) 73 /* Single-shot comparator registers */ 74 #define TRCSSCCRn(n) (0x280 + (n * 4)) 75 #define TRCSSCSRn(n) (0x2A0 + (n * 4)) 76 #define TRCSSPCICRn(n) (0x2C0 + (n * 4)) 77 /* Management registers (0x300-0x314) */ 78 #define TRCOSLAR 0x300 79 #define TRCOSLSR 0x304 80 #define TRCPDCR 0x310 81 #define TRCPDSR 0x314 82 /* Trace registers (0x318-0xEFC) */ 83 /* Comparator registers */ 84 #define TRCACVRn(n) (0x400 + (n * 8)) 85 #define TRCACATRn(n) (0x480 + (n * 8)) 86 #define TRCDVCVRn(n) (0x500 + (n * 16)) 87 #define TRCDVCMRn(n) (0x580 + (n * 16)) 88 #define TRCCIDCVRn(n) (0x600 + (n * 8)) 89 #define TRCVMIDCVRn(n) (0x640 + (n * 8)) 90 #define TRCCIDCCTLR0 0x680 91 #define TRCCIDCCTLR1 0x684 92 #define TRCVMIDCCTLR0 0x688 93 #define TRCVMIDCCTLR1 0x68C 94 /* Management register (0xF00) */ 95 /* Integration control registers */ 96 #define TRCITCTRL 0xF00 97 /* Trace registers (0xFA0-0xFA4) */ 98 /* Claim tag registers */ 99 #define TRCCLAIMSET 0xFA0 100 #define TRCCLAIMCLR 0xFA4 101 /* Management registers (0xFA8-0xFFC) */ 102 #define TRCDEVAFF0 0xFA8 103 #define TRCDEVAFF1 0xFAC 104 #define TRCLAR 0xFB0 105 #define TRCLSR 0xFB4 106 #define TRCAUTHSTATUS 0xFB8 107 #define TRCDEVARCH 0xFBC 108 #define TRCDEVID 0xFC8 109 #define TRCDEVTYPE 0xFCC 110 #define TRCPIDR4 0xFD0 111 #define TRCPIDR5 0xFD4 112 #define TRCPIDR6 0xFD8 113 #define TRCPIDR7 0xFDC 114 #define TRCPIDR0 0xFE0 115 #define TRCPIDR1 0xFE4 116 #define TRCPIDR2 0xFE8 117 #define TRCPIDR3 0xFEC 118 #define TRCCIDR0 0xFF0 119 #define TRCCIDR1 0xFF4 120 #define TRCCIDR2 0xFF8 121 #define TRCCIDR3 0xFFC 122 123 /* ETMv4 resources */ 124 #define ETM_MAX_NR_PE 8 125 #define ETMv4_MAX_CNTR 4 126 #define ETM_MAX_SEQ_STATES 4 127 #define ETM_MAX_EXT_INP_SEL 4 128 #define ETM_MAX_EXT_INP 256 129 #define ETM_MAX_EXT_OUT 4 130 #define ETM_MAX_SINGLE_ADDR_CMP 16 131 #define ETM_MAX_ADDR_RANGE_CMP (ETM_MAX_SINGLE_ADDR_CMP / 2) 132 #define ETM_MAX_DATA_VAL_CMP 8 133 #define ETMv4_MAX_CTXID_CMP 8 134 #define ETM_MAX_VMID_CMP 8 135 #define ETM_MAX_PE_CMP 8 136 #define ETM_MAX_RES_SEL 32 137 #define ETM_MAX_SS_CMP 8 138 139 #define ETM_ARCH_V4 0x40 140 #define ETMv4_SYNC_MASK 0x1F 141 #define ETM_CYC_THRESHOLD_MASK 0xFFF 142 #define ETM_CYC_THRESHOLD_DEFAULT 0x100 143 #define ETMv4_EVENT_MASK 0xFF 144 #define ETM_CNTR_MAX_VAL 0xFFFF 145 #define ETM_TRACEID_MASK 0x3f 146 147 /* ETMv4 programming modes */ 148 #define ETM_MODE_EXCLUDE BIT(0) 149 #define ETM_MODE_LOAD BIT(1) 150 #define ETM_MODE_STORE BIT(2) 151 #define ETM_MODE_LOAD_STORE BIT(3) 152 #define ETM_MODE_BB BIT(4) 153 #define ETMv4_MODE_CYCACC BIT(5) 154 #define ETMv4_MODE_CTXID BIT(6) 155 #define ETM_MODE_VMID BIT(7) 156 #define ETM_MODE_COND(val) BMVAL(val, 8, 10) 157 #define ETMv4_MODE_TIMESTAMP BIT(11) 158 #define ETM_MODE_RETURNSTACK BIT(12) 159 #define ETM_MODE_QELEM(val) BMVAL(val, 13, 14) 160 #define ETM_MODE_DATA_TRACE_ADDR BIT(15) 161 #define ETM_MODE_DATA_TRACE_VAL BIT(16) 162 #define ETM_MODE_ISTALL BIT(17) 163 #define ETM_MODE_DSTALL BIT(18) 164 #define ETM_MODE_ATB_TRIGGER BIT(19) 165 #define ETM_MODE_LPOVERRIDE BIT(20) 166 #define ETM_MODE_ISTALL_EN BIT(21) 167 #define ETM_MODE_DSTALL_EN BIT(22) 168 #define ETM_MODE_INSTPRIO BIT(23) 169 #define ETM_MODE_NOOVERFLOW BIT(24) 170 #define ETM_MODE_TRACE_RESET BIT(25) 171 #define ETM_MODE_TRACE_ERR BIT(26) 172 #define ETM_MODE_VIEWINST_STARTSTOP BIT(27) 173 #define ETMv4_MODE_ALL (GENMASK(27, 0) | \ 174 ETM_MODE_EXCL_KERN | \ 175 ETM_MODE_EXCL_USER) 176 177 #define TRCSTATR_IDLE_BIT 0 178 #define TRCSTATR_PMSTABLE_BIT 1 179 #define ETM_DEFAULT_ADDR_COMP 0 180 181 /* PowerDown Control Register bits */ 182 #define TRCPDCR_PU BIT(3) 183 184 /* secure state access levels - TRCACATRn */ 185 #define ETM_EXLEVEL_S_APP BIT(8) 186 #define ETM_EXLEVEL_S_OS BIT(9) 187 #define ETM_EXLEVEL_S_HYP BIT(10) 188 #define ETM_EXLEVEL_S_MON BIT(11) 189 /* non-secure state access levels - TRCACATRn */ 190 #define ETM_EXLEVEL_NS_APP BIT(12) 191 #define ETM_EXLEVEL_NS_OS BIT(13) 192 #define ETM_EXLEVEL_NS_HYP BIT(14) 193 #define ETM_EXLEVEL_NS_NA BIT(15) 194 195 /* access level control in TRCVICTLR - same bits as TRCACATRn but shifted */ 196 #define ETM_EXLEVEL_LSHIFT_TRCVICTLR 8 197 198 /* secure / non secure masks - TRCVICTLR, IDR3 */ 199 #define ETM_EXLEVEL_S_VICTLR_MASK GENMASK(19, 16) 200 /* NS MON (EL3) mode never implemented */ 201 #define ETM_EXLEVEL_NS_VICTLR_MASK GENMASK(22, 20) 202 203 /* Interpretation of resource numbers change at ETM v4.3 architecture */ 204 #define ETM4X_ARCH_4V3 0x43 205 206 /** 207 * struct etmv4_config - configuration information related to an ETMv4 208 * @mode: Controls various modes supported by this ETM. 209 * @pe_sel: Controls which PE to trace. 210 * @cfg: Controls the tracing options. 211 * @eventctrl0: Controls the tracing of arbitrary events. 212 * @eventctrl1: Controls the behavior of the events that @event_ctrl0 selects. 213 * @stallctl: If functionality that prevents trace unit buffer overflows 214 * is available. 215 * @ts_ctrl: Controls the insertion of global timestamps in the 216 * trace streams. 217 * @syncfreq: Controls how often trace synchronization requests occur. 218 * the TRCCCCTLR register. 219 * @ccctlr: Sets the threshold value for cycle counting. 220 * @vinst_ctrl: Controls instruction trace filtering. 221 * @viiectlr: Set or read, the address range comparators. 222 * @vissctlr: Set, or read, the single address comparators that control the 223 * ViewInst start-stop logic. 224 * @vipcssctlr: Set, or read, which PE comparator inputs can control the 225 * ViewInst start-stop logic. 226 * @seq_idx: Sequencor index selector. 227 * @seq_ctrl: Control for the sequencer state transition control register. 228 * @seq_rst: Moves the sequencer to state 0 when a programmed event occurs. 229 * @seq_state: Set, or read the sequencer state. 230 * @cntr_idx: Counter index seletor. 231 * @cntrldvr: Sets or returns the reload count value for a counter. 232 * @cntr_ctrl: Controls the operation of a counter. 233 * @cntr_val: Sets or returns the value for a counter. 234 * @res_idx: Resource index selector. 235 * @res_ctrl: Controls the selection of the resources in the trace unit. 236 * @ss_idx: Single-shot index selector. 237 * @ss_ctrl: Controls the corresponding single-shot comparator resource. 238 * @ss_status: The status of the corresponding single-shot comparator. 239 * @ss_pe_cmp: Selects the PE comparator inputs for Single-shot control. 240 * @addr_idx: Address comparator index selector. 241 * @addr_val: Value for address comparator. 242 * @addr_acc: Address comparator access type. 243 * @addr_type: Current status of the comparator register. 244 * @ctxid_idx: Context ID index selector. 245 * @ctxid_pid: Value of the context ID comparator. 246 * @ctxid_mask0:Context ID comparator mask for comparator 0-3. 247 * @ctxid_mask1:Context ID comparator mask for comparator 4-7. 248 * @vmid_idx: VM ID index selector. 249 * @vmid_val: Value of the VM ID comparator. 250 * @vmid_mask0: VM ID comparator mask for comparator 0-3. 251 * @vmid_mask1: VM ID comparator mask for comparator 4-7. 252 * @ext_inp: External input selection. 253 * @arch: ETM architecture version (for arch dependent config). 254 */ 255 struct etmv4_config { 256 u32 mode; 257 u32 pe_sel; 258 u32 cfg; 259 u32 eventctrl0; 260 u32 eventctrl1; 261 u32 stall_ctrl; 262 u32 ts_ctrl; 263 u32 syncfreq; 264 u32 ccctlr; 265 u32 bb_ctrl; 266 u32 vinst_ctrl; 267 u32 viiectlr; 268 u32 vissctlr; 269 u32 vipcssctlr; 270 u8 seq_idx; 271 u32 seq_ctrl[ETM_MAX_SEQ_STATES]; 272 u32 seq_rst; 273 u32 seq_state; 274 u8 cntr_idx; 275 u32 cntrldvr[ETMv4_MAX_CNTR]; 276 u32 cntr_ctrl[ETMv4_MAX_CNTR]; 277 u32 cntr_val[ETMv4_MAX_CNTR]; 278 u8 res_idx; 279 u32 res_ctrl[ETM_MAX_RES_SEL]; 280 u8 ss_idx; 281 u32 ss_ctrl[ETM_MAX_SS_CMP]; 282 u32 ss_status[ETM_MAX_SS_CMP]; 283 u32 ss_pe_cmp[ETM_MAX_SS_CMP]; 284 u8 addr_idx; 285 u64 addr_val[ETM_MAX_SINGLE_ADDR_CMP]; 286 u64 addr_acc[ETM_MAX_SINGLE_ADDR_CMP]; 287 u8 addr_type[ETM_MAX_SINGLE_ADDR_CMP]; 288 u8 ctxid_idx; 289 u64 ctxid_pid[ETMv4_MAX_CTXID_CMP]; 290 u32 ctxid_mask0; 291 u32 ctxid_mask1; 292 u8 vmid_idx; 293 u64 vmid_val[ETM_MAX_VMID_CMP]; 294 u32 vmid_mask0; 295 u32 vmid_mask1; 296 u32 ext_inp; 297 u8 arch; 298 }; 299 300 /** 301 * struct etm4_save_state - state to be preserved when ETM is without power 302 */ 303 struct etmv4_save_state { 304 u32 trcprgctlr; 305 u32 trcprocselr; 306 u32 trcconfigr; 307 u32 trcauxctlr; 308 u32 trceventctl0r; 309 u32 trceventctl1r; 310 u32 trcstallctlr; 311 u32 trctsctlr; 312 u32 trcsyncpr; 313 u32 trcccctlr; 314 u32 trcbbctlr; 315 u32 trctraceidr; 316 u32 trcqctlr; 317 318 u32 trcvictlr; 319 u32 trcviiectlr; 320 u32 trcvissctlr; 321 u32 trcvipcssctlr; 322 u32 trcvdctlr; 323 u32 trcvdsacctlr; 324 u32 trcvdarcctlr; 325 326 u32 trcseqevr[ETM_MAX_SEQ_STATES]; 327 u32 trcseqrstevr; 328 u32 trcseqstr; 329 u32 trcextinselr; 330 u32 trccntrldvr[ETMv4_MAX_CNTR]; 331 u32 trccntctlr[ETMv4_MAX_CNTR]; 332 u32 trccntvr[ETMv4_MAX_CNTR]; 333 334 u32 trcrsctlr[ETM_MAX_RES_SEL]; 335 336 u32 trcssccr[ETM_MAX_SS_CMP]; 337 u32 trcsscsr[ETM_MAX_SS_CMP]; 338 u32 trcsspcicr[ETM_MAX_SS_CMP]; 339 340 u64 trcacvr[ETM_MAX_SINGLE_ADDR_CMP]; 341 u64 trcacatr[ETM_MAX_SINGLE_ADDR_CMP]; 342 u64 trccidcvr[ETMv4_MAX_CTXID_CMP]; 343 u64 trcvmidcvr[ETM_MAX_VMID_CMP]; 344 u32 trccidcctlr0; 345 u32 trccidcctlr1; 346 u32 trcvmidcctlr0; 347 u32 trcvmidcctlr1; 348 349 u32 trcclaimset; 350 351 u32 cntr_val[ETMv4_MAX_CNTR]; 352 u32 seq_state; 353 u32 vinst_ctrl; 354 u32 ss_status[ETM_MAX_SS_CMP]; 355 356 u32 trcpdcr; 357 }; 358 359 /** 360 * struct etm4_drvdata - specifics associated to an ETM component 361 * @base: Memory mapped base address for this component. 362 * @csdev: Component vitals needed by the framework. 363 * @spinlock: Only one at a time pls. 364 * @mode: This tracer's mode, i.e sysFS, Perf or disabled. 365 * @cpu: The cpu this component is affined to. 366 * @arch: ETM version number. 367 * @nr_pe: The number of processing entity available for tracing. 368 * @nr_pe_cmp: The number of processing entity comparator inputs that are 369 * available for tracing. 370 * @nr_addr_cmp:Number of pairs of address comparators available 371 * as found in ETMIDR4 0-3. 372 * @nr_cntr: Number of counters as found in ETMIDR5 bit 28-30. 373 * @nr_ext_inp: Number of external input. 374 * @numcidc: Number of contextID comparators. 375 * @numvmidc: Number of VMID comparators. 376 * @nrseqstate: The number of sequencer states that are implemented. 377 * @nr_event: Indicates how many events the trace unit support. 378 * @nr_resource:The number of resource selection pairs available for tracing. 379 * @nr_ss_cmp: Number of single-shot comparator controls that are available. 380 * @trcid: value of the current ID for this component. 381 * @trcid_size: Indicates the trace ID width. 382 * @ts_size: Global timestamp size field. 383 * @ctxid_size: Size of the context ID field to consider. 384 * @vmid_size: Size of the VM ID comparator to consider. 385 * @ccsize: Indicates the size of the cycle counter in bits. 386 * @ccitmin: minimum value that can be programmed in 387 * @s_ex_level: In secure state, indicates whether instruction tracing is 388 * supported for the corresponding Exception level. 389 * @ns_ex_level:In non-secure state, indicates whether instruction tracing is 390 * supported for the corresponding Exception level. 391 * @sticky_enable: true if ETM base configuration has been done. 392 * @boot_enable:True if we should start tracing at boot time. 393 * @os_unlock: True if access to management registers is allowed. 394 * @instrp0: Tracing of load and store instructions 395 * as P0 elements is supported. 396 * @trcbb: Indicates if the trace unit supports branch broadcast tracing. 397 * @trccond: If the trace unit supports conditional 398 * instruction tracing. 399 * @retstack: Indicates if the implementation supports a return stack. 400 * @trccci: Indicates if the trace unit supports cycle counting 401 * for instruction. 402 * @q_support: Q element support characteristics. 403 * @trc_error: Whether a trace unit can trace a system 404 * error exception. 405 * @syncpr: Indicates if an implementation has a fixed 406 * synchronization period. 407 * @stall_ctrl: Enables trace unit functionality that prevents trace 408 * unit buffer overflows. 409 * @sysstall: Does the system support stall control of the PE? 410 * @nooverflow: Indicate if overflow prevention is supported. 411 * @atbtrig: If the implementation can support ATB triggers 412 * @lpoverride: If the implementation can support low-power state over. 413 * @config: structure holding configuration parameters. 414 * @save_state: State to be preserved across power loss 415 * @state_needs_restore: True when there is context to restore after PM exit 416 * @skip_power_up: Indicates if an implementation can skip powering up 417 * the trace unit. 418 */ 419 struct etmv4_drvdata { 420 void __iomem *base; 421 struct coresight_device *csdev; 422 spinlock_t spinlock; 423 local_t mode; 424 int cpu; 425 u8 arch; 426 u8 nr_pe; 427 u8 nr_pe_cmp; 428 u8 nr_addr_cmp; 429 u8 nr_cntr; 430 u8 nr_ext_inp; 431 u8 numcidc; 432 u8 numvmidc; 433 u8 nrseqstate; 434 u8 nr_event; 435 u8 nr_resource; 436 u8 nr_ss_cmp; 437 u8 trcid; 438 u8 trcid_size; 439 u8 ts_size; 440 u8 ctxid_size; 441 u8 vmid_size; 442 u8 ccsize; 443 u8 ccitmin; 444 u8 s_ex_level; 445 u8 ns_ex_level; 446 u8 q_support; 447 bool sticky_enable; 448 bool boot_enable; 449 bool os_unlock; 450 bool instrp0; 451 bool trcbb; 452 bool trccond; 453 bool retstack; 454 bool trccci; 455 bool trc_error; 456 bool syncpr; 457 bool stallctl; 458 bool sysstall; 459 bool nooverflow; 460 bool atbtrig; 461 bool lpoverride; 462 struct etmv4_config config; 463 struct etmv4_save_state *save_state; 464 bool state_needs_restore; 465 bool skip_power_up; 466 }; 467 468 /* Address comparator access types */ 469 enum etm_addr_acctype { 470 ETM_INSTR_ADDR, 471 ETM_DATA_LOAD_ADDR, 472 ETM_DATA_STORE_ADDR, 473 ETM_DATA_LOAD_STORE_ADDR, 474 }; 475 476 /* Address comparator context types */ 477 enum etm_addr_ctxtype { 478 ETM_CTX_NONE, 479 ETM_CTX_CTXID, 480 ETM_CTX_VMID, 481 ETM_CTX_CTXID_VMID, 482 }; 483 484 extern const struct attribute_group *coresight_etmv4_groups[]; 485 void etm4_config_trace_mode(struct etmv4_config *config); 486 #endif 487