drivers/hwtracing/coresight/coresight-etm4x.h

   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