drivers/perf/arm-cmn.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (C) 2016-2020 Arm Limited
   3 // CMN-600 Coherent Mesh Network PMU driver
   4
   5 #include <linux/acpi.h>
   6 #include <linux/bitfield.h>
   7 #include <linux/bitops.h>
   8 #include <linux/debugfs.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/io.h>
  11 #include <linux/io-64-nonatomic-lo-hi.h>
  12 #include <linux/kernel.h>
  13 #include <linux/list.h>
  14 #include <linux/module.h>
  15 #include <linux/of.h>
  16 #include <linux/perf_event.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/slab.h>
  19 #include <linux/sort.h>
  20
  21 /* Common register stuff */
  22 #define CMN_NODE_INFO                   0x0000
  23 #define CMN_NI_NODE_TYPE                GENMASK_ULL(15, 0)
  24 #define CMN_NI_NODE_ID                  GENMASK_ULL(31, 16)
  25 #define CMN_NI_LOGICAL_ID               GENMASK_ULL(47, 32)
  26
  27 #define CMN_NODEID_DEVID(reg)           ((reg) & 3)
  28 #define CMN_NODEID_EXT_DEVID(reg)       ((reg) & 1)
  29 #define CMN_NODEID_PID(reg)             (((reg) >> 2) & 1)
  30 #define CMN_NODEID_EXT_PID(reg)         (((reg) >> 1) & 3)
  31 #define CMN_NODEID_1x1_PID(reg)         (((reg) >> 2) & 7)
  32 #define CMN_NODEID_X(reg, bits)         ((reg) >> (3 + (bits)))
  33 #define CMN_NODEID_Y(reg, bits)         (((reg) >> 3) & ((1U << (bits)) - 1))
  34
  35 #define CMN_CHILD_INFO                  0x0080
  36 #define CMN_CI_CHILD_COUNT              GENMASK_ULL(15, 0)
  37 #define CMN_CI_CHILD_PTR_OFFSET         GENMASK_ULL(31, 16)
  38
  39 #define CMN_CHILD_NODE_ADDR             GENMASK(29, 0)
  40 #define CMN_CHILD_NODE_EXTERNAL         BIT(31)
  41
  42 #define CMN_MAX_DIMENSION               12
  43 #define CMN_MAX_XPS                     (CMN_MAX_DIMENSION * CMN_MAX_DIMENSION)
  44 #define CMN_MAX_DTMS                    (CMN_MAX_XPS + (CMN_MAX_DIMENSION - 1) * 4)
  45
  46 /* The CFG node has various info besides the discovery tree */
  47 #define CMN_CFGM_PERIPH_ID_01           0x0008
  48 #define CMN_CFGM_PID0_PART_0            GENMASK_ULL(7, 0)
  49 #define CMN_CFGM_PID1_PART_1            GENMASK_ULL(35, 32)
  50 #define CMN_CFGM_PERIPH_ID_23           0x0010
  51 #define CMN_CFGM_PID2_REVISION          GENMASK_ULL(7, 4)
  52
  53 #define CMN_CFGM_INFO_GLOBAL            0x900
  54 #define CMN_INFO_MULTIPLE_DTM_EN        BIT_ULL(63)
  55 #define CMN_INFO_RSP_VC_NUM             GENMASK_ULL(53, 52)
  56 #define CMN_INFO_DAT_VC_NUM             GENMASK_ULL(51, 50)
  57
  58 #define CMN_CFGM_INFO_GLOBAL_1          0x908
  59 #define CMN_INFO_SNP_VC_NUM             GENMASK_ULL(3, 2)
  60 #define CMN_INFO_REQ_VC_NUM             GENMASK_ULL(1, 0)
  61
  62 /* XPs also have some local topology info which has uses too */
  63 #define CMN_MXP__CONNECT_INFO(p)        (0x0008 + 8 * (p))
  64 #define CMN__CONNECT_INFO_DEVICE_TYPE   GENMASK_ULL(4, 0)
  65
  66 #define CMN_MAX_PORTS                   6
  67 #define CI700_CONNECT_INFO_P2_5_OFFSET  0x10
  68
  69 /* PMU registers occupy the 3rd 4KB page of each node's region */
  70 #define CMN_PMU_OFFSET                  0x2000
  71
  72 /* For most nodes, this is all there is */
  73 #define CMN_PMU_EVENT_SEL               0x000
  74 #define CMN__PMU_CBUSY_SNTHROTTLE_SEL   GENMASK_ULL(44, 42)
  75 #define CMN__PMU_SN_HOME_SEL            GENMASK_ULL(40, 39)
  76 #define CMN__PMU_HBT_LBT_SEL            GENMASK_ULL(38, 37)
  77 #define CMN__PMU_CLASS_OCCUP_ID         GENMASK_ULL(36, 35)
  78 /* Technically this is 4 bits wide on DNs, but we only use 2 there anyway */
  79 #define CMN__PMU_OCCUP1_ID              GENMASK_ULL(34, 32)
  80
  81 /* HN-Ps are weird... */
  82 #define CMN_HNP_PMU_EVENT_SEL           0x008
  83
  84 /* DTMs live in the PMU space of XP registers */
  85 #define CMN_DTM_WPn(n)                  (0x1A0 + (n) * 0x18)
  86 #define CMN_DTM_WPn_CONFIG(n)           (CMN_DTM_WPn(n) + 0x00)
  87 #define CMN_DTM_WPn_CONFIG_WP_CHN_NUM   GENMASK_ULL(20, 19)
  88 #define CMN_DTM_WPn_CONFIG_WP_DEV_SEL2  GENMASK_ULL(18, 17)
  89 #define CMN_DTM_WPn_CONFIG_WP_COMBINE   BIT(9)
  90 #define CMN_DTM_WPn_CONFIG_WP_EXCLUSIVE BIT(8)
  91 #define CMN600_WPn_CONFIG_WP_COMBINE    BIT(6)
  92 #define CMN600_WPn_CONFIG_WP_EXCLUSIVE  BIT(5)
  93 #define CMN_DTM_WPn_CONFIG_WP_GRP       GENMASK_ULL(5, 4)
  94 #define CMN_DTM_WPn_CONFIG_WP_CHN_SEL   GENMASK_ULL(3, 1)
  95 #define CMN_DTM_WPn_CONFIG_WP_DEV_SEL   BIT(0)
  96 #define CMN_DTM_WPn_VAL(n)              (CMN_DTM_WPn(n) + 0x08)
  97 #define CMN_DTM_WPn_MASK(n)             (CMN_DTM_WPn(n) + 0x10)
  98
  99 #define CMN_DTM_PMU_CONFIG              0x210
 100 #define CMN__PMEVCNT0_INPUT_SEL         GENMASK_ULL(37, 32)
 101 #define CMN__PMEVCNT0_INPUT_SEL_WP      0x00
 102 #define CMN__PMEVCNT0_INPUT_SEL_XP      0x04
 103 #define CMN__PMEVCNT0_INPUT_SEL_DEV     0x10
 104 #define CMN__PMEVCNT0_GLOBAL_NUM        GENMASK_ULL(18, 16)
 105 #define CMN__PMEVCNTn_GLOBAL_NUM_SHIFT(n)       ((n) * 4)
 106 #define CMN__PMEVCNT_PAIRED(n)          BIT(4 + (n))
 107 #define CMN__PMEVCNT23_COMBINED         BIT(2)
 108 #define CMN__PMEVCNT01_COMBINED         BIT(1)
 109 #define CMN_DTM_PMU_CONFIG_PMU_EN       BIT(0)
 110
 111 #define CMN_DTM_PMEVCNT                 0x220
 112
 113 #define CMN_DTM_PMEVCNTSR               0x240
 114
 115 #define CMN650_DTM_UNIT_INFO            0x0910
 116 #define CMN_DTM_UNIT_INFO               0x0960
 117 #define CMN_DTM_UNIT_INFO_DTC_DOMAIN    GENMASK_ULL(1, 0)
 118
 119 #define CMN_DTM_NUM_COUNTERS            4
 120 /* Want more local counters? Why not replicate the whole DTM! Ugh... */
 121 #define CMN_DTM_OFFSET(n)               ((n) * 0x200)
 122
 123 /* The DTC node is where the magic happens */
 124 #define CMN_DT_DTC_CTL                  0x0a00
 125 #define CMN_DT_DTC_CTL_DT_EN            BIT(0)
 126
 127 /* DTC counters are paired in 64-bit registers on a 16-byte stride. Yuck */
 128 #define _CMN_DT_CNT_REG(n)              ((((n) / 2) * 4 + (n) % 2) * 4)
 129 #define CMN_DT_PMEVCNT(n)               (CMN_PMU_OFFSET + _CMN_DT_CNT_REG(n))
 130 #define CMN_DT_PMCCNTR                  (CMN_PMU_OFFSET + 0x40)
 131
 132 #define CMN_DT_PMEVCNTSR(n)             (CMN_PMU_OFFSET + 0x50 + _CMN_DT_CNT_REG(n))
 133 #define CMN_DT_PMCCNTRSR                (CMN_PMU_OFFSET + 0x90)
 134
 135 #define CMN_DT_PMCR                     (CMN_PMU_OFFSET + 0x100)
 136 #define CMN_DT_PMCR_PMU_EN              BIT(0)
 137 #define CMN_DT_PMCR_CNTR_RST            BIT(5)
 138 #define CMN_DT_PMCR_OVFL_INTR_EN        BIT(6)
 139
 140 #define CMN_DT_PMOVSR                   (CMN_PMU_OFFSET + 0x118)
 141 #define CMN_DT_PMOVSR_CLR               (CMN_PMU_OFFSET + 0x120)
 142
 143 #define CMN_DT_PMSSR                    (CMN_PMU_OFFSET + 0x128)
 144 #define CMN_DT_PMSSR_SS_STATUS(n)       BIT(n)
 145
 146 #define CMN_DT_PMSRR                    (CMN_PMU_OFFSET + 0x130)
 147 #define CMN_DT_PMSRR_SS_REQ             BIT(0)
 148
 149 #define CMN_DT_NUM_COUNTERS             8
 150 #define CMN_MAX_DTCS                    4
 151
 152 /*
 153  * Even in the worst case a DTC counter can't wrap in fewer than 2^42 cycles,
 154  * so throwing away one bit to make overflow handling easy is no big deal.
 155  */
 156 #define CMN_COUNTER_INIT                0x80000000
 157 /* Similarly for the 40-bit cycle counter */
 158 #define CMN_CC_INIT                     0x8000000000ULL
 159
 160
 161 /* Event attributes */
 162 #define CMN_CONFIG_TYPE                 GENMASK_ULL(15, 0)
 163 #define CMN_CONFIG_EVENTID              GENMASK_ULL(26, 16)
 164 #define CMN_CONFIG_OCCUPID              GENMASK_ULL(30, 27)
 165 #define CMN_CONFIG_BYNODEID             BIT_ULL(31)
 166 #define CMN_CONFIG_NODEID               GENMASK_ULL(47, 32)
 167
 168 #define CMN_EVENT_TYPE(event)           FIELD_GET(CMN_CONFIG_TYPE, (event)->attr.config)
 169 #define CMN_EVENT_EVENTID(event)        FIELD_GET(CMN_CONFIG_EVENTID, (event)->attr.config)
 170 #define CMN_EVENT_OCCUPID(event)        FIELD_GET(CMN_CONFIG_OCCUPID, (event)->attr.config)
 171 #define CMN_EVENT_BYNODEID(event)       FIELD_GET(CMN_CONFIG_BYNODEID, (event)->attr.config)
 172 #define CMN_EVENT_NODEID(event)         FIELD_GET(CMN_CONFIG_NODEID, (event)->attr.config)
 173
 174 #define CMN_CONFIG_WP_COMBINE           GENMASK_ULL(30, 27)
 175 #define CMN_CONFIG_WP_DEV_SEL           GENMASK_ULL(50, 48)
 176 #define CMN_CONFIG_WP_CHN_SEL           GENMASK_ULL(55, 51)
 177 /* Note that we don't yet support the tertiary match group on newer IPs */
 178 #define CMN_CONFIG_WP_GRP               BIT_ULL(56)
 179 #define CMN_CONFIG_WP_EXCLUSIVE         BIT_ULL(57)
 180 #define CMN_CONFIG1_WP_VAL              GENMASK_ULL(63, 0)
 181 #define CMN_CONFIG2_WP_MASK             GENMASK_ULL(63, 0)
 182
 183 #define CMN_EVENT_WP_COMBINE(event)     FIELD_GET(CMN_CONFIG_WP_COMBINE, (event)->attr.config)
 184 #define CMN_EVENT_WP_DEV_SEL(event)     FIELD_GET(CMN_CONFIG_WP_DEV_SEL, (event)->attr.config)
 185 #define CMN_EVENT_WP_CHN_SEL(event)     FIELD_GET(CMN_CONFIG_WP_CHN_SEL, (event)->attr.config)
 186 #define CMN_EVENT_WP_GRP(event)         FIELD_GET(CMN_CONFIG_WP_GRP, (event)->attr.config)
 187 #define CMN_EVENT_WP_EXCLUSIVE(event)   FIELD_GET(CMN_CONFIG_WP_EXCLUSIVE, (event)->attr.config)
 188 #define CMN_EVENT_WP_VAL(event)         FIELD_GET(CMN_CONFIG1_WP_VAL, (event)->attr.config1)
 189 #define CMN_EVENT_WP_MASK(event)        FIELD_GET(CMN_CONFIG2_WP_MASK, (event)->attr.config2)
 190
 191 /* Made-up event IDs for watchpoint direction */
 192 #define CMN_WP_UP                       0
 193 #define CMN_WP_DOWN                     2
 194
 195
 196 /* Internal values for encoding event support */
 197 enum cmn_model {
 198         CMN600 = 1,
 199         CMN650 = 2,
 200         CMN700 = 4,
 201         CI700 = 8,
 202         /* ...and then we can use bitmap tricks for commonality */
 203         CMN_ANY = -1,
 204         NOT_CMN600 = -2,
 205         CMN_650ON = CMN650 | CMN700,
 206 };
 207
 208 /* Actual part numbers and revision IDs defined by the hardware */
 209 enum cmn_part {
 210         PART_CMN600 = 0x434,
 211         PART_CMN650 = 0x436,
 212         PART_CMN700 = 0x43c,
 213         PART_CI700 = 0x43a,
 214 };
 215
 216 /* CMN-600 r0px shouldn't exist in silicon, thankfully */
 217 enum cmn_revision {
 218         REV_CMN600_R1P0,
 219         REV_CMN600_R1P1,
 220         REV_CMN600_R1P2,
 221         REV_CMN600_R1P3,
 222         REV_CMN600_R2P0,
 223         REV_CMN600_R3P0,
 224         REV_CMN600_R3P1,
 225         REV_CMN650_R0P0 = 0,
 226         REV_CMN650_R1P0,
 227         REV_CMN650_R1P1,
 228         REV_CMN650_R2P0,
 229         REV_CMN650_R1P2,
 230         REV_CMN700_R0P0 = 0,
 231         REV_CMN700_R1P0,
 232         REV_CMN700_R2P0,
 233         REV_CMN700_R3P0,
 234         REV_CI700_R0P0 = 0,
 235         REV_CI700_R1P0,
 236         REV_CI700_R2P0,
 237 };
 238
 239 enum cmn_node_type {
 240         CMN_TYPE_INVALID,
 241         CMN_TYPE_DVM,
 242         CMN_TYPE_CFG,
 243         CMN_TYPE_DTC,
 244         CMN_TYPE_HNI,
 245         CMN_TYPE_HNF,
 246         CMN_TYPE_XP,
 247         CMN_TYPE_SBSX,
 248         CMN_TYPE_MPAM_S,
 249         CMN_TYPE_MPAM_NS,
 250         CMN_TYPE_RNI,
 251         CMN_TYPE_RND = 0xd,
 252         CMN_TYPE_RNSAM = 0xf,
 253         CMN_TYPE_MTSX,
 254         CMN_TYPE_HNP,
 255         CMN_TYPE_CXRA = 0x100,
 256         CMN_TYPE_CXHA,
 257         CMN_TYPE_CXLA,
 258         CMN_TYPE_CCRA,
 259         CMN_TYPE_CCHA,
 260         CMN_TYPE_CCLA,
 261         CMN_TYPE_CCLA_RNI,
 262         CMN_TYPE_HNS = 0x200,
 263         CMN_TYPE_HNS_MPAM_S,
 264         CMN_TYPE_HNS_MPAM_NS,
 265         /* Not a real node type */
 266         CMN_TYPE_WP = 0x7770
 267 };
 268
 269 enum cmn_filter_select {
 270         SEL_NONE = -1,
 271         SEL_OCCUP1ID,
 272         SEL_CLASS_OCCUP_ID,
 273         SEL_CBUSY_SNTHROTTLE_SEL,
 274         SEL_HBT_LBT_SEL,
 275         SEL_SN_HOME_SEL,
 276         SEL_MAX
 277 };
 278
 279 struct arm_cmn_node {
 280         void __iomem *pmu_base;
 281         u16 id, logid;
 282         enum cmn_node_type type;
 283
 284         int dtm;
 285         union {
 286                 /* DN/HN-F/CXHA */
 287                 struct {
 288                         u8 val : 4;
 289                         u8 count : 4;
 290                 } occupid[SEL_MAX];
 291                 /* XP */
 292                 u8 dtc;
 293         };
 294         union {
 295                 u8 event[4];
 296                 __le32 event_sel;
 297                 u16 event_w[4];
 298                 __le64 event_sel_w;
 299         };
 300 };
 301
 302 struct arm_cmn_dtm {
 303         void __iomem *base;
 304         u32 pmu_config_low;
 305         union {
 306                 u8 input_sel[4];
 307                 __le32 pmu_config_high;
 308         };
 309         s8 wp_event[4];
 310 };
 311
 312 struct arm_cmn_dtc {
 313         void __iomem *base;
 314         int irq;
 315         int irq_friend;
 316         bool cc_active;
 317
 318         struct perf_event *counters[CMN_DT_NUM_COUNTERS];
 319         struct perf_event *cycles;
 320 };
 321
 322 #define CMN_STATE_DISABLED      BIT(0)
 323 #define CMN_STATE_TXN           BIT(1)
 324
 325 struct arm_cmn {
 326         struct device *dev;
 327         void __iomem *base;
 328         unsigned int state;
 329
 330         enum cmn_revision rev;
 331         enum cmn_part part;
 332         u8 mesh_x;
 333         u8 mesh_y;
 334         u16 num_xps;
 335         u16 num_dns;
 336         bool multi_dtm;
 337         u8 ports_used;
 338         struct {
 339                 unsigned int rsp_vc_num : 2;
 340                 unsigned int dat_vc_num : 2;
 341                 unsigned int snp_vc_num : 2;
 342                 unsigned int req_vc_num : 2;
 343         };
 344
 345         struct arm_cmn_node *xps;
 346         struct arm_cmn_node *dns;
 347
 348         struct arm_cmn_dtm *dtms;
 349         struct arm_cmn_dtc *dtc;
 350         unsigned int num_dtcs;
 351
 352         int cpu;
 353         struct hlist_node cpuhp_node;
 354
 355         struct pmu pmu;
 356         struct dentry *debug;
 357 };
 358
 359 #define to_cmn(p)       container_of(p, struct arm_cmn, pmu)
 360
 361 static int arm_cmn_hp_state;
 362
 363 struct arm_cmn_nodeid {
 364         u8 x;
 365         u8 y;
 366         u8 port;
 367         u8 dev;
 368 };
 369
 370 static int arm_cmn_xyidbits(const struct arm_cmn *cmn)
 371 {
 372         return fls((cmn->mesh_x - 1) | (cmn->mesh_y - 1) | 2);
 373 }
 374
 375 static struct arm_cmn_nodeid arm_cmn_nid(const struct arm_cmn *cmn, u16 id)
 376 {
 377         struct arm_cmn_nodeid nid;
 378
 379         if (cmn->num_xps == 1) {
 380                 nid.x = 0;
 381                 nid.y = 0;
 382                 nid.port = CMN_NODEID_1x1_PID(id);
 383                 nid.dev = CMN_NODEID_DEVID(id);
 384         } else {
 385                 int bits = arm_cmn_xyidbits(cmn);
 386
 387                 nid.x = CMN_NODEID_X(id, bits);
 388                 nid.y = CMN_NODEID_Y(id, bits);
 389                 if (cmn->ports_used & 0xc) {
 390                         nid.port = CMN_NODEID_EXT_PID(id);
 391                         nid.dev = CMN_NODEID_EXT_DEVID(id);
 392                 } else {
 393                         nid.port = CMN_NODEID_PID(id);
 394                         nid.dev = CMN_NODEID_DEVID(id);
 395                 }
 396         }
 397         return nid;
 398 }
 399
 400 static struct arm_cmn_node *arm_cmn_node_to_xp(const struct arm_cmn *cmn,
 401                                                const struct arm_cmn_node *dn)
 402 {
 403         struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, dn->id);
 404         int xp_idx = cmn->mesh_x * nid.y + nid.x;
 405
 406         return cmn->xps + xp_idx;
 407 }
 408 static struct arm_cmn_node *arm_cmn_node(const struct arm_cmn *cmn,
 409                                          enum cmn_node_type type)
 410 {
 411         struct arm_cmn_node *dn;
 412
 413         for (dn = cmn->dns; dn->type; dn++)
 414                 if (dn->type == type)
 415                         return dn;
 416         return NULL;
 417 }
 418
 419 static enum cmn_model arm_cmn_model(const struct arm_cmn *cmn)
 420 {
 421         switch (cmn->part) {
 422         case PART_CMN600:
 423                 return CMN600;
 424         case PART_CMN650:
 425                 return CMN650;
 426         case PART_CMN700:
 427                 return CMN700;
 428         case PART_CI700:
 429                 return CI700;
 430         default:
 431                 return 0;
 432         };
 433 }
 434
 435 static u32 arm_cmn_device_connect_info(const struct arm_cmn *cmn,
 436                                        const struct arm_cmn_node *xp, int port)
 437 {
 438         int offset = CMN_MXP__CONNECT_INFO(port);
 439
 440         if (port >= 2) {
 441                 if (cmn->part == PART_CMN600 || cmn->part == PART_CMN650)
 442                         return 0;
 443                 /*
 444                  * CI-700 may have extra ports, but still has the
 445                  * mesh_port_connect_info registers in the way.
 446                  */
 447                 if (cmn->part == PART_CI700)
 448                         offset += CI700_CONNECT_INFO_P2_5_OFFSET;
 449         }
 450
 451         return readl_relaxed(xp->pmu_base - CMN_PMU_OFFSET + offset);
 452 }
 453
 454 static struct dentry *arm_cmn_debugfs;
 455
 456 #ifdef CONFIG_DEBUG_FS
 457 static const char *arm_cmn_device_type(u8 type)
 458 {
 459         switch(FIELD_GET(CMN__CONNECT_INFO_DEVICE_TYPE, type)) {
 460                 case 0x00: return "        |";
 461                 case 0x01: return "  RN-I  |";
 462                 case 0x02: return "  RN-D  |";
 463                 case 0x04: return " RN-F_B |";
 464                 case 0x05: return "RN-F_B_E|";
 465                 case 0x06: return " RN-F_A |";
 466                 case 0x07: return "RN-F_A_E|";
 467                 case 0x08: return "  HN-T  |";
 468                 case 0x09: return "  HN-I  |";
 469                 case 0x0a: return "  HN-D  |";
 470                 case 0x0b: return "  HN-P  |";
 471                 case 0x0c: return "  SN-F  |";
 472                 case 0x0d: return "  SBSX  |";
 473                 case 0x0e: return "  HN-F  |";
 474                 case 0x0f: return " SN-F_E |";
 475                 case 0x10: return " SN-F_D |";
 476                 case 0x11: return "  CXHA  |";
 477                 case 0x12: return "  CXRA  |";
 478                 case 0x13: return "  CXRH  |";
 479                 case 0x14: return " RN-F_D |";
 480                 case 0x15: return "RN-F_D_E|";
 481                 case 0x16: return " RN-F_C |";
 482                 case 0x17: return "RN-F_C_E|";
 483                 case 0x18: return " RN-F_E |";
 484                 case 0x19: return "RN-F_E_E|";
 485                 case 0x1c: return "  MTSX  |";
 486                 case 0x1d: return "  HN-V  |";
 487                 case 0x1e: return "  CCG   |";
 488                 default:   return "  ????  |";
 489         }
 490 }
 491
 492 static void arm_cmn_show_logid(struct seq_file *s, int x, int y, int p, int d)
 493 {
 494         struct arm_cmn *cmn = s->private;
 495         struct arm_cmn_node *dn;
 496
 497         for (dn = cmn->dns; dn->type; dn++) {
 498                 struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, dn->id);
 499
 500                 if (dn->type == CMN_TYPE_XP)
 501                         continue;
 502                 /* Ignore the extra components that will overlap on some ports */
 503                 if (dn->type < CMN_TYPE_HNI)
 504                         continue;
 505
 506                 if (nid.x != x || nid.y != y || nid.port != p || nid.dev != d)
 507                         continue;
 508
 509                 seq_printf(s, "   #%-2d  |", dn->logid);
 510                 return;
 511         }
 512         seq_puts(s, "        |");
 513 }
 514
 515 static int arm_cmn_map_show(struct seq_file *s, void *data)
 516 {
 517         struct arm_cmn *cmn = s->private;
 518         int x, y, p, pmax = fls(cmn->ports_used);
 519
 520         seq_puts(s, "     X");
 521         for (x = 0; x < cmn->mesh_x; x++)
 522                 seq_printf(s, "    %d    ", x);
 523         seq_puts(s, "\nY P D+");
 524         y = cmn->mesh_y;
 525         while (y--) {
 526                 int xp_base = cmn->mesh_x * y;
 527                 u8 port[CMN_MAX_PORTS][CMN_MAX_DIMENSION];
 528
 529                 for (x = 0; x < cmn->mesh_x; x++)
 530                         seq_puts(s, "--------+");
 531
 532                 seq_printf(s, "\n%d    |", y);
 533                 for (x = 0; x < cmn->mesh_x; x++) {
 534                         struct arm_cmn_node *xp = cmn->xps + xp_base + x;
 535
 536                         for (p = 0; p < CMN_MAX_PORTS; p++)
 537                                 port[p][x] = arm_cmn_device_connect_info(cmn, xp, p);
 538                         seq_printf(s, " XP #%-2d |", xp_base + x);
 539                 }
 540
 541                 seq_puts(s, "\n     |");
 542                 for (x = 0; x < cmn->mesh_x; x++) {
 543                         u8 dtc = cmn->xps[xp_base + x].dtc;
 544
 545                         if (dtc & (dtc - 1))
 546                                 seq_puts(s, " DTC ?? |");
 547                         else
 548                                 seq_printf(s, " DTC %ld  |", __ffs(dtc));
 549                 }
 550                 seq_puts(s, "\n     |");
 551                 for (x = 0; x < cmn->mesh_x; x++)
 552                         seq_puts(s, "........|");
 553
 554                 for (p = 0; p < pmax; p++) {
 555                         seq_printf(s, "\n  %d  |", p);
 556                         for (x = 0; x < cmn->mesh_x; x++)
 557                                 seq_puts(s, arm_cmn_device_type(port[p][x]));
 558                         seq_puts(s, "\n    0|");
 559                         for (x = 0; x < cmn->mesh_x; x++)
 560                                 arm_cmn_show_logid(s, x, y, p, 0);
 561                         seq_puts(s, "\n    1|");
 562                         for (x = 0; x < cmn->mesh_x; x++)
 563                                 arm_cmn_show_logid(s, x, y, p, 1);
 564                 }
 565                 seq_puts(s, "\n-----+");
 566         }
 567         for (x = 0; x < cmn->mesh_x; x++)
 568                 seq_puts(s, "--------+");
 569         seq_puts(s, "\n");
 570         return 0;
 571 }
 572 DEFINE_SHOW_ATTRIBUTE(arm_cmn_map);
 573
 574 static void arm_cmn_debugfs_init(struct arm_cmn *cmn, int id)
 575 {
 576         const char *name  = "map";
 577
 578         if (id > 0)
 579                 name = devm_kasprintf(cmn->dev, GFP_KERNEL, "map_%d", id);
 580         if (!name)
 581                 return;
 582
 583         cmn->debug = debugfs_create_file(name, 0444, arm_cmn_debugfs, cmn, &arm_cmn_map_fops);
 584 }
 585 #else
 586 static void arm_cmn_debugfs_init(struct arm_cmn *cmn, int id) {}
 587 #endif
 588
 589 struct arm_cmn_hw_event {
 590         struct arm_cmn_node *dn;
 591         u64 dtm_idx[4];
 592         unsigned int dtc_idx;
 593         u8 dtcs_used;
 594         u8 num_dns;
 595         u8 dtm_offset;
 596         bool wide_sel;
 597         enum cmn_filter_select filter_sel;
 598 };
 599
 600 #define for_each_hw_dn(hw, dn, i) \
 601         for (i = 0, dn = hw->dn; i < hw->num_dns; i++, dn++)
 602
 603 static struct arm_cmn_hw_event *to_cmn_hw(struct perf_event *event)
 604 {
 605         BUILD_BUG_ON(sizeof(struct arm_cmn_hw_event) > offsetof(struct hw_perf_event, target));
 606         return (struct arm_cmn_hw_event *)&event->hw;
 607 }
 608
 609 static void arm_cmn_set_index(u64 x[], unsigned int pos, unsigned int val)
 610 {
 611         x[pos / 32] |= (u64)val << ((pos % 32) * 2);
 612 }
 613
 614 static unsigned int arm_cmn_get_index(u64 x[], unsigned int pos)
 615 {
 616         return (x[pos / 32] >> ((pos % 32) * 2)) & 3;
 617 }
 618
 619 struct arm_cmn_event_attr {
 620         struct device_attribute attr;
 621         enum cmn_model model;
 622         enum cmn_node_type type;
 623         enum cmn_filter_select fsel;
 624         u16 eventid;
 625         u8 occupid;
 626 };
 627
 628 struct arm_cmn_format_attr {
 629         struct device_attribute attr;
 630         u64 field;
 631         int config;
 632 };
 633
 634 #define _CMN_EVENT_ATTR(_model, _name, _type, _eventid, _occupid, _fsel)\
 635         (&((struct arm_cmn_event_attr[]) {{                             \
 636                 .attr = __ATTR(_name, 0444, arm_cmn_event_show, NULL),  \
 637                 .model = _model,                                        \
 638                 .type = _type,                                          \
 639                 .eventid = _eventid,                                    \
 640                 .occupid = _occupid,                                    \
 641                 .fsel = _fsel,                                          \
 642         }})[0].attr.attr)
 643 #define CMN_EVENT_ATTR(_model, _name, _type, _eventid)                  \
 644         _CMN_EVENT_ATTR(_model, _name, _type, _eventid, 0, SEL_NONE)
 645
 646 static ssize_t arm_cmn_event_show(struct device *dev,
 647                                   struct device_attribute *attr, char *buf)
 648 {
 649         struct arm_cmn_event_attr *eattr;
 650
 651         eattr = container_of(attr, typeof(*eattr), attr);
 652
 653         if (eattr->type == CMN_TYPE_DTC)
 654                 return sysfs_emit(buf, "type=0x%x\n", eattr->type);
 655
 656         if (eattr->type == CMN_TYPE_WP)
 657                 return sysfs_emit(buf,
 658                                   "type=0x%x,eventid=0x%x,wp_dev_sel=?,wp_chn_sel=?,wp_grp=?,wp_val=?,wp_mask=?\n",
 659                                   eattr->type, eattr->eventid);
 660
 661         if (eattr->fsel > SEL_NONE)
 662                 return sysfs_emit(buf, "type=0x%x,eventid=0x%x,occupid=0x%x\n",
 663                                   eattr->type, eattr->eventid, eattr->occupid);
 664
 665         return sysfs_emit(buf, "type=0x%x,eventid=0x%x\n", eattr->type,
 666                           eattr->eventid);
 667 }
 668
 669 static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
 670                                              struct attribute *attr,
 671                                              int unused)
 672 {
 673         struct device *dev = kobj_to_dev(kobj);
 674         struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
 675         struct arm_cmn_event_attr *eattr;
 676         enum cmn_node_type type;
 677         u16 eventid;
 678
 679         eattr = container_of(attr, typeof(*eattr), attr.attr);
 680
 681         if (!(eattr->model & arm_cmn_model(cmn)))
 682                 return 0;
 683
 684         type = eattr->type;
 685         eventid = eattr->eventid;
 686
 687         /* Watchpoints aren't nodes, so avoid confusion */
 688         if (type == CMN_TYPE_WP)
 689                 return attr->mode;
 690
 691         /* Hide XP events for unused interfaces/channels */
 692         if (type == CMN_TYPE_XP) {
 693                 unsigned int intf = (eventid >> 2) & 7;
 694                 unsigned int chan = eventid >> 5;
 695
 696                 if ((intf & 4) && !(cmn->ports_used & BIT(intf & 3)))
 697                         return 0;
 698
 699                 if (chan == 4 && cmn->part == PART_CMN600)
 700                         return 0;
 701
 702                 if ((chan == 5 && cmn->rsp_vc_num < 2) ||
 703                     (chan == 6 && cmn->dat_vc_num < 2) ||
 704                     (chan == 7 && cmn->snp_vc_num < 2) ||
 705                     (chan == 8 && cmn->req_vc_num < 2))
 706                         return 0;
 707         }
 708
 709         /* Revision-specific differences */
 710         if (cmn->part == PART_CMN600) {
 711                 if (cmn->rev < REV_CMN600_R1P3) {
 712                         if (type == CMN_TYPE_CXRA && eventid > 0x10)
 713                                 return 0;
 714                 }
 715                 if (cmn->rev < REV_CMN600_R1P2) {
 716                         if (type == CMN_TYPE_HNF && eventid == 0x1b)
 717                                 return 0;
 718                         if (type == CMN_TYPE_CXRA || type == CMN_TYPE_CXHA)
 719                                 return 0;
 720                 }
 721         } else if (cmn->part == PART_CMN650) {
 722                 if (cmn->rev < REV_CMN650_R2P0 || cmn->rev == REV_CMN650_R1P2) {
 723                         if (type == CMN_TYPE_HNF && eventid > 0x22)
 724                                 return 0;
 725                         if (type == CMN_TYPE_SBSX && eventid == 0x17)
 726                                 return 0;
 727                         if (type == CMN_TYPE_RNI && eventid > 0x10)
 728                                 return 0;
 729                 }
 730         } else if (cmn->part == PART_CMN700) {
 731                 if (cmn->rev < REV_CMN700_R2P0) {
 732                         if (type == CMN_TYPE_HNF && eventid > 0x2c)
 733                                 return 0;
 734                         if (type == CMN_TYPE_CCHA && eventid > 0x74)
 735                                 return 0;
 736                         if (type == CMN_TYPE_CCLA && eventid > 0x27)
 737                                 return 0;
 738                 }
 739                 if (cmn->rev < REV_CMN700_R1P0) {
 740                         if (type == CMN_TYPE_HNF && eventid > 0x2b)
 741                                 return 0;
 742                 }
 743         }
 744
 745         if (!arm_cmn_node(cmn, type))
 746                 return 0;
 747
 748         return attr->mode;
 749 }
 750
 751 #define _CMN_EVENT_DVM(_model, _name, _event, _occup, _fsel)    \
 752         _CMN_EVENT_ATTR(_model, dn_##_name, CMN_TYPE_DVM, _event, _occup, _fsel)
 753 #define CMN_EVENT_DTC(_name)                                    \
 754         CMN_EVENT_ATTR(CMN_ANY, dtc_##_name, CMN_TYPE_DTC, 0)
 755 #define CMN_EVENT_HNF(_model, _name, _event)                    \
 756         CMN_EVENT_ATTR(_model, hnf_##_name, CMN_TYPE_HNF, _event)
 757 #define CMN_EVENT_HNI(_name, _event)                            \
 758         CMN_EVENT_ATTR(CMN_ANY, hni_##_name, CMN_TYPE_HNI, _event)
 759 #define CMN_EVENT_HNP(_name, _event)                            \
 760         CMN_EVENT_ATTR(CMN_ANY, hnp_##_name, CMN_TYPE_HNP, _event)
 761 #define __CMN_EVENT_XP(_name, _event)                           \
 762         CMN_EVENT_ATTR(CMN_ANY, mxp_##_name, CMN_TYPE_XP, _event)
 763 #define CMN_EVENT_SBSX(_model, _name, _event)                   \
 764         CMN_EVENT_ATTR(_model, sbsx_##_name, CMN_TYPE_SBSX, _event)
 765 #define CMN_EVENT_RNID(_model, _name, _event)                   \
 766         CMN_EVENT_ATTR(_model, rnid_##_name, CMN_TYPE_RNI, _event)
 767 #define CMN_EVENT_MTSX(_name, _event)                           \
 768         CMN_EVENT_ATTR(CMN_ANY, mtsx_##_name, CMN_TYPE_MTSX, _event)
 769 #define CMN_EVENT_CXRA(_model, _name, _event)                           \
 770         CMN_EVENT_ATTR(_model, cxra_##_name, CMN_TYPE_CXRA, _event)
 771 #define CMN_EVENT_CXHA(_name, _event)                           \
 772         CMN_EVENT_ATTR(CMN_ANY, cxha_##_name, CMN_TYPE_CXHA, _event)
 773 #define CMN_EVENT_CCRA(_name, _event)                           \
 774         CMN_EVENT_ATTR(CMN_ANY, ccra_##_name, CMN_TYPE_CCRA, _event)
 775 #define CMN_EVENT_CCHA(_name, _event)                           \
 776         CMN_EVENT_ATTR(CMN_ANY, ccha_##_name, CMN_TYPE_CCHA, _event)
 777 #define CMN_EVENT_CCLA(_name, _event)                           \
 778         CMN_EVENT_ATTR(CMN_ANY, ccla_##_name, CMN_TYPE_CCLA, _event)
 779 #define CMN_EVENT_CCLA_RNI(_name, _event)                               \
 780         CMN_EVENT_ATTR(CMN_ANY, ccla_rni_##_name, CMN_TYPE_CCLA_RNI, _event)
 781 #define CMN_EVENT_HNS(_name, _event)                            \
 782         CMN_EVENT_ATTR(CMN_ANY, hns_##_name, CMN_TYPE_HNS, _event)
 783
 784 #define CMN_EVENT_DVM(_model, _name, _event)                    \
 785         _CMN_EVENT_DVM(_model, _name, _event, 0, SEL_NONE)
 786 #define CMN_EVENT_DVM_OCC(_model, _name, _event)                        \
 787         _CMN_EVENT_DVM(_model, _name##_all, _event, 0, SEL_OCCUP1ID),   \
 788         _CMN_EVENT_DVM(_model, _name##_dvmop, _event, 1, SEL_OCCUP1ID), \
 789         _CMN_EVENT_DVM(_model, _name##_dvmsync, _event, 2, SEL_OCCUP1ID)
 790
 791 #define CMN_EVENT_HN_OCC(_model, _name, _type, _event)          \
 792         _CMN_EVENT_ATTR(_model, _name##_all, _type, _event, 0, SEL_OCCUP1ID), \
 793         _CMN_EVENT_ATTR(_model, _name##_read, _type, _event, 1, SEL_OCCUP1ID), \
 794         _CMN_EVENT_ATTR(_model, _name##_write, _type, _event, 2, SEL_OCCUP1ID), \
 795         _CMN_EVENT_ATTR(_model, _name##_atomic, _type, _event, 3, SEL_OCCUP1ID), \
 796         _CMN_EVENT_ATTR(_model, _name##_stash, _type, _event, 4, SEL_OCCUP1ID)
 797 #define CMN_EVENT_HN_CLS(_model, _name, _type, _event)                  \
 798         _CMN_EVENT_ATTR(_model, _name##_class0, _type, _event, 0, SEL_CLASS_OCCUP_ID), \
 799         _CMN_EVENT_ATTR(_model, _name##_class1, _type, _event, 1, SEL_CLASS_OCCUP_ID), \
 800         _CMN_EVENT_ATTR(_model, _name##_class2, _type, _event, 2, SEL_CLASS_OCCUP_ID), \
 801         _CMN_EVENT_ATTR(_model, _name##_class3, _type, _event, 3, SEL_CLASS_OCCUP_ID)
 802 #define CMN_EVENT_HN_SNT(_model, _name, _type, _event)                  \
 803         _CMN_EVENT_ATTR(_model, _name##_all, _type, _event, 0, SEL_CBUSY_SNTHROTTLE_SEL), \
 804         _CMN_EVENT_ATTR(_model, _name##_group0_read, _type, _event, 1, SEL_CBUSY_SNTHROTTLE_SEL), \
 805         _CMN_EVENT_ATTR(_model, _name##_group0_write, _type, _event, 2, SEL_CBUSY_SNTHROTTLE_SEL), \
 806         _CMN_EVENT_ATTR(_model, _name##_group1_read, _type, _event, 3, SEL_CBUSY_SNTHROTTLE_SEL), \
 807         _CMN_EVENT_ATTR(_model, _name##_group1_write, _type, _event, 4, SEL_CBUSY_SNTHROTTLE_SEL), \
 808         _CMN_EVENT_ATTR(_model, _name##_read, _type, _event, 5, SEL_CBUSY_SNTHROTTLE_SEL), \
 809         _CMN_EVENT_ATTR(_model, _name##_write, _type, _event, 6, SEL_CBUSY_SNTHROTTLE_SEL)
 810
 811 #define CMN_EVENT_HNF_OCC(_model, _name, _event)                        \
 812         CMN_EVENT_HN_OCC(_model, hnf_##_name, CMN_TYPE_HNF, _event)
 813 #define CMN_EVENT_HNF_CLS(_model, _name, _event)                        \
 814         CMN_EVENT_HN_CLS(_model, hnf_##_name, CMN_TYPE_HNF, _event)
 815 #define CMN_EVENT_HNF_SNT(_model, _name, _event)                        \
 816         CMN_EVENT_HN_SNT(_model, hnf_##_name, CMN_TYPE_HNF, _event)
 817
 818 #define CMN_EVENT_HNS_OCC(_name, _event)                                \
 819         CMN_EVENT_HN_OCC(CMN_ANY, hns_##_name, CMN_TYPE_HNS, _event),   \
 820         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_rxsnp, CMN_TYPE_HNS, _event, 5, SEL_OCCUP1ID), \
 821         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_lbt, CMN_TYPE_HNS, _event, 6, SEL_OCCUP1ID), \
 822         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_hbt, CMN_TYPE_HNS, _event, 7, SEL_OCCUP1ID)
 823 #define CMN_EVENT_HNS_CLS( _name, _event)                               \
 824         CMN_EVENT_HN_CLS(CMN_ANY, hns_##_name, CMN_TYPE_HNS, _event)
 825 #define CMN_EVENT_HNS_SNT(_name, _event)                                \
 826         CMN_EVENT_HN_SNT(CMN_ANY, hns_##_name, CMN_TYPE_HNS, _event)
 827 #define CMN_EVENT_HNS_HBT(_name, _event)                                \
 828         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_all, CMN_TYPE_HNS, _event, 0, SEL_HBT_LBT_SEL), \
 829         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_hbt, CMN_TYPE_HNS, _event, 1, SEL_HBT_LBT_SEL), \
 830         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_lbt, CMN_TYPE_HNS, _event, 2, SEL_HBT_LBT_SEL)
 831 #define CMN_EVENT_HNS_SNH(_name, _event)                                \
 832         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_all, CMN_TYPE_HNS, _event, 0, SEL_SN_HOME_SEL), \
 833         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_sn, CMN_TYPE_HNS, _event, 1, SEL_SN_HOME_SEL), \
 834         _CMN_EVENT_ATTR(CMN_ANY, hns_##_name##_home, CMN_TYPE_HNS, _event, 2, SEL_SN_HOME_SEL)
 835
 836 #define _CMN_EVENT_XP_MESH(_name, _event)                       \
 837         __CMN_EVENT_XP(e_##_name, (_event) | (0 << 2)),         \
 838         __CMN_EVENT_XP(w_##_name, (_event) | (1 << 2)),         \
 839         __CMN_EVENT_XP(n_##_name, (_event) | (2 << 2)),         \
 840         __CMN_EVENT_XP(s_##_name, (_event) | (3 << 2))
 841
 842 #define _CMN_EVENT_XP_PORT(_name, _event)                       \
 843         __CMN_EVENT_XP(p0_##_name, (_event) | (4 << 2)),        \
 844         __CMN_EVENT_XP(p1_##_name, (_event) | (5 << 2)),        \
 845         __CMN_EVENT_XP(p2_##_name, (_event) | (6 << 2)),        \
 846         __CMN_EVENT_XP(p3_##_name, (_event) | (7 << 2))
 847
 848 #define _CMN_EVENT_XP(_name, _event)                            \
 849         _CMN_EVENT_XP_MESH(_name, _event),                      \
 850         _CMN_EVENT_XP_PORT(_name, _event)
 851
 852 /* Good thing there are only 3 fundamental XP events... */
 853 #define CMN_EVENT_XP(_name, _event)                             \
 854         _CMN_EVENT_XP(req_##_name, (_event) | (0 << 5)),        \
 855         _CMN_EVENT_XP(rsp_##_name, (_event) | (1 << 5)),        \
 856         _CMN_EVENT_XP(snp_##_name, (_event) | (2 << 5)),        \
 857         _CMN_EVENT_XP(dat_##_name, (_event) | (3 << 5)),        \
 858         _CMN_EVENT_XP(pub_##_name, (_event) | (4 << 5)),        \
 859         _CMN_EVENT_XP(rsp2_##_name, (_event) | (5 << 5)),       \
 860         _CMN_EVENT_XP(dat2_##_name, (_event) | (6 << 5)),       \
 861         _CMN_EVENT_XP(snp2_##_name, (_event) | (7 << 5)),       \
 862         _CMN_EVENT_XP(req2_##_name, (_event) | (8 << 5))
 863
 864 #define CMN_EVENT_XP_DAT(_name, _event)                         \
 865         _CMN_EVENT_XP_PORT(dat_##_name, (_event) | (3 << 5)),   \
 866         _CMN_EVENT_XP_PORT(dat2_##_name, (_event) | (6 << 5))
 867
 868
 869 static struct attribute *arm_cmn_event_attrs[] = {
 870         CMN_EVENT_DTC(cycles),
 871
 872         /*
 873          * DVM node events conflict with HN-I events in the equivalent PMU
 874          * slot, but our lazy short-cut of using the DTM counter index for
 875          * the PMU index as well happens to avoid that by construction.
 876          */
 877         CMN_EVENT_DVM(CMN600, rxreq_dvmop,              0x01),
 878         CMN_EVENT_DVM(CMN600, rxreq_dvmsync,            0x02),
 879         CMN_EVENT_DVM(CMN600, rxreq_dvmop_vmid_filtered, 0x03),
 880         CMN_EVENT_DVM(CMN600, rxreq_retried,            0x04),
 881         CMN_EVENT_DVM_OCC(CMN600, rxreq_trk_occupancy,  0x05),
 882         CMN_EVENT_DVM(NOT_CMN600, dvmop_tlbi,           0x01),
 883         CMN_EVENT_DVM(NOT_CMN600, dvmop_bpi,            0x02),
 884         CMN_EVENT_DVM(NOT_CMN600, dvmop_pici,           0x03),
 885         CMN_EVENT_DVM(NOT_CMN600, dvmop_vici,           0x04),
 886         CMN_EVENT_DVM(NOT_CMN600, dvmsync,              0x05),
 887         CMN_EVENT_DVM(NOT_CMN600, vmid_filtered,        0x06),
 888         CMN_EVENT_DVM(NOT_CMN600, rndop_filtered,       0x07),
 889         CMN_EVENT_DVM(NOT_CMN600, retry,                0x08),
 890         CMN_EVENT_DVM(NOT_CMN600, txsnp_flitv,          0x09),
 891         CMN_EVENT_DVM(NOT_CMN600, txsnp_stall,          0x0a),
 892         CMN_EVENT_DVM(NOT_CMN600, trkfull,              0x0b),
 893         CMN_EVENT_DVM_OCC(NOT_CMN600, trk_occupancy,    0x0c),
 894         CMN_EVENT_DVM_OCC(CMN700, trk_occupancy_cxha,   0x0d),
 895         CMN_EVENT_DVM_OCC(CMN700, trk_occupancy_pdn,    0x0e),
 896         CMN_EVENT_DVM(CMN700, trk_alloc,                0x0f),
 897         CMN_EVENT_DVM(CMN700, trk_cxha_alloc,           0x10),
 898         CMN_EVENT_DVM(CMN700, trk_pdn_alloc,            0x11),
 899         CMN_EVENT_DVM(CMN700, txsnp_stall_limit,        0x12),
 900         CMN_EVENT_DVM(CMN700, rxsnp_stall_starv,        0x13),
 901         CMN_EVENT_DVM(CMN700, txsnp_sync_stall_op,      0x14),
 902
 903         CMN_EVENT_HNF(CMN_ANY, cache_miss,              0x01),
 904         CMN_EVENT_HNF(CMN_ANY, slc_sf_cache_access,     0x02),
 905         CMN_EVENT_HNF(CMN_ANY, cache_fill,              0x03),
 906         CMN_EVENT_HNF(CMN_ANY, pocq_retry,              0x04),
 907         CMN_EVENT_HNF(CMN_ANY, pocq_reqs_recvd,         0x05),
 908         CMN_EVENT_HNF(CMN_ANY, sf_hit,                  0x06),
 909         CMN_EVENT_HNF(CMN_ANY, sf_evictions,            0x07),
 910         CMN_EVENT_HNF(CMN_ANY, dir_snoops_sent,         0x08),
 911         CMN_EVENT_HNF(CMN_ANY, brd_snoops_sent,         0x09),
 912         CMN_EVENT_HNF(CMN_ANY, slc_eviction,            0x0a),
 913         CMN_EVENT_HNF(CMN_ANY, slc_fill_invalid_way,    0x0b),
 914         CMN_EVENT_HNF(CMN_ANY, mc_retries,              0x0c),
 915         CMN_EVENT_HNF(CMN_ANY, mc_reqs,                 0x0d),
 916         CMN_EVENT_HNF(CMN_ANY, qos_hh_retry,            0x0e),
 917         CMN_EVENT_HNF_OCC(CMN_ANY, qos_pocq_occupancy,  0x0f),
 918         CMN_EVENT_HNF(CMN_ANY, pocq_addrhaz,            0x10),
 919         CMN_EVENT_HNF(CMN_ANY, pocq_atomic_addrhaz,     0x11),
 920         CMN_EVENT_HNF(CMN_ANY, ld_st_swp_adq_full,      0x12),
 921         CMN_EVENT_HNF(CMN_ANY, cmp_adq_full,            0x13),
 922         CMN_EVENT_HNF(CMN_ANY, txdat_stall,             0x14),
 923         CMN_EVENT_HNF(CMN_ANY, txrsp_stall,             0x15),
 924         CMN_EVENT_HNF(CMN_ANY, seq_full,                0x16),
 925         CMN_EVENT_HNF(CMN_ANY, seq_hit,                 0x17),
 926         CMN_EVENT_HNF(CMN_ANY, snp_sent,                0x18),
 927         CMN_EVENT_HNF(CMN_ANY, sfbi_dir_snp_sent,       0x19),
 928         CMN_EVENT_HNF(CMN_ANY, sfbi_brd_snp_sent,       0x1a),
 929         CMN_EVENT_HNF(CMN_ANY, snp_sent_untrk,          0x1b),
 930         CMN_EVENT_HNF(CMN_ANY, intv_dirty,              0x1c),
 931         CMN_EVENT_HNF(CMN_ANY, stash_snp_sent,          0x1d),
 932         CMN_EVENT_HNF(CMN_ANY, stash_data_pull,         0x1e),
 933         CMN_EVENT_HNF(CMN_ANY, snp_fwded,               0x1f),
 934         CMN_EVENT_HNF(NOT_CMN600, atomic_fwd,           0x20),
 935         CMN_EVENT_HNF(NOT_CMN600, mpam_hardlim,         0x21),
 936         CMN_EVENT_HNF(NOT_CMN600, mpam_softlim,         0x22),
 937         CMN_EVENT_HNF(CMN_650ON, snp_sent_cluster,      0x23),
 938         CMN_EVENT_HNF(CMN_650ON, sf_imprecise_evict,    0x24),
 939         CMN_EVENT_HNF(CMN_650ON, sf_evict_shared_line,  0x25),
 940         CMN_EVENT_HNF_CLS(CMN700, pocq_class_occup,     0x26),
 941         CMN_EVENT_HNF_CLS(CMN700, pocq_class_retry,     0x27),
 942         CMN_EVENT_HNF_CLS(CMN700, class_mc_reqs,        0x28),
 943         CMN_EVENT_HNF_CLS(CMN700, class_cgnt_cmin,      0x29),
 944         CMN_EVENT_HNF_SNT(CMN700, sn_throttle,          0x2a),
 945         CMN_EVENT_HNF_SNT(CMN700, sn_throttle_min,      0x2b),
 946         CMN_EVENT_HNF(CMN700, sf_precise_to_imprecise,  0x2c),
 947         CMN_EVENT_HNF(CMN700, snp_intv_cln,             0x2d),
 948         CMN_EVENT_HNF(CMN700, nc_excl,                  0x2e),
 949         CMN_EVENT_HNF(CMN700, excl_mon_ovfl,            0x2f),
 950
 951         CMN_EVENT_HNI(rrt_rd_occ_cnt_ovfl,              0x20),
 952         CMN_EVENT_HNI(rrt_wr_occ_cnt_ovfl,              0x21),
 953         CMN_EVENT_HNI(rdt_rd_occ_cnt_ovfl,              0x22),
 954         CMN_EVENT_HNI(rdt_wr_occ_cnt_ovfl,              0x23),
 955         CMN_EVENT_HNI(wdb_occ_cnt_ovfl,                 0x24),
 956         CMN_EVENT_HNI(rrt_rd_alloc,                     0x25),
 957         CMN_EVENT_HNI(rrt_wr_alloc,                     0x26),
 958         CMN_EVENT_HNI(rdt_rd_alloc,                     0x27),
 959         CMN_EVENT_HNI(rdt_wr_alloc,                     0x28),
 960         CMN_EVENT_HNI(wdb_alloc,                        0x29),
 961         CMN_EVENT_HNI(txrsp_retryack,                   0x2a),
 962         CMN_EVENT_HNI(arvalid_no_arready,               0x2b),
 963         CMN_EVENT_HNI(arready_no_arvalid,               0x2c),
 964         CMN_EVENT_HNI(awvalid_no_awready,               0x2d),
 965         CMN_EVENT_HNI(awready_no_awvalid,               0x2e),
 966         CMN_EVENT_HNI(wvalid_no_wready,                 0x2f),
 967         CMN_EVENT_HNI(txdat_stall,                      0x30),
 968         CMN_EVENT_HNI(nonpcie_serialization,            0x31),
 969         CMN_EVENT_HNI(pcie_serialization,               0x32),
 970
 971         /*
 972          * HN-P events squat on top of the HN-I similarly to DVM events, except
 973          * for being crammed into the same physical node as well. And of course
 974          * where would the fun be if the same events were in the same order...
 975          */
 976         CMN_EVENT_HNP(rrt_wr_occ_cnt_ovfl,              0x01),
 977         CMN_EVENT_HNP(rdt_wr_occ_cnt_ovfl,              0x02),
 978         CMN_EVENT_HNP(wdb_occ_cnt_ovfl,                 0x03),
 979         CMN_EVENT_HNP(rrt_wr_alloc,                     0x04),
 980         CMN_EVENT_HNP(rdt_wr_alloc,                     0x05),
 981         CMN_EVENT_HNP(wdb_alloc,                        0x06),
 982         CMN_EVENT_HNP(awvalid_no_awready,               0x07),
 983         CMN_EVENT_HNP(awready_no_awvalid,               0x08),
 984         CMN_EVENT_HNP(wvalid_no_wready,                 0x09),
 985         CMN_EVENT_HNP(rrt_rd_occ_cnt_ovfl,              0x11),
 986         CMN_EVENT_HNP(rdt_rd_occ_cnt_ovfl,              0x12),
 987         CMN_EVENT_HNP(rrt_rd_alloc,                     0x13),
 988         CMN_EVENT_HNP(rdt_rd_alloc,                     0x14),
 989         CMN_EVENT_HNP(arvalid_no_arready,               0x15),
 990         CMN_EVENT_HNP(arready_no_arvalid,               0x16),
 991
 992         CMN_EVENT_XP(txflit_valid,                      0x01),
 993         CMN_EVENT_XP(txflit_stall,                      0x02),
 994         CMN_EVENT_XP_DAT(partial_dat_flit,              0x03),
 995         /* We treat watchpoints as a special made-up class of XP events */
 996         CMN_EVENT_ATTR(CMN_ANY, watchpoint_up, CMN_TYPE_WP, CMN_WP_UP),
 997         CMN_EVENT_ATTR(CMN_ANY, watchpoint_down, CMN_TYPE_WP, CMN_WP_DOWN),
 998
 999         CMN_EVENT_SBSX(CMN_ANY, rd_req,                 0x01),
1000         CMN_EVENT_SBSX(CMN_ANY, wr_req,                 0x02),
1001         CMN_EVENT_SBSX(CMN_ANY, cmo_req,                0x03),
1002         CMN_EVENT_SBSX(CMN_ANY, txrsp_retryack,         0x04),
1003         CMN_EVENT_SBSX(CMN_ANY, txdat_flitv,            0x05),
1004         CMN_EVENT_SBSX(CMN_ANY, txrsp_flitv,            0x06),
1005         CMN_EVENT_SBSX(CMN_ANY, rd_req_trkr_occ_cnt_ovfl, 0x11),
1006         CMN_EVENT_SBSX(CMN_ANY, wr_req_trkr_occ_cnt_ovfl, 0x12),
1007         CMN_EVENT_SBSX(CMN_ANY, cmo_req_trkr_occ_cnt_ovfl, 0x13),
1008         CMN_EVENT_SBSX(CMN_ANY, wdb_occ_cnt_ovfl,       0x14),
1009         CMN_EVENT_SBSX(CMN_ANY, rd_axi_trkr_occ_cnt_ovfl, 0x15),
1010         CMN_EVENT_SBSX(CMN_ANY, cmo_axi_trkr_occ_cnt_ovfl, 0x16),
1011         CMN_EVENT_SBSX(NOT_CMN600, rdb_occ_cnt_ovfl,    0x17),
1012         CMN_EVENT_SBSX(CMN_ANY, arvalid_no_arready,     0x21),
1013         CMN_EVENT_SBSX(CMN_ANY, awvalid_no_awready,     0x22),
1014         CMN_EVENT_SBSX(CMN_ANY, wvalid_no_wready,       0x23),
1015         CMN_EVENT_SBSX(CMN_ANY, txdat_stall,            0x24),
1016         CMN_EVENT_SBSX(CMN_ANY, txrsp_stall,            0x25),
1017
1018         CMN_EVENT_RNID(CMN_ANY, s0_rdata_beats,         0x01),
1019         CMN_EVENT_RNID(CMN_ANY, s1_rdata_beats,         0x02),
1020         CMN_EVENT_RNID(CMN_ANY, s2_rdata_beats,         0x03),
1021         CMN_EVENT_RNID(CMN_ANY, rxdat_flits,            0x04),
1022         CMN_EVENT_RNID(CMN_ANY, txdat_flits,            0x05),
1023         CMN_EVENT_RNID(CMN_ANY, txreq_flits_total,      0x06),
1024         CMN_EVENT_RNID(CMN_ANY, txreq_flits_retried,    0x07),
1025         CMN_EVENT_RNID(CMN_ANY, rrt_occ_ovfl,           0x08),
1026         CMN_EVENT_RNID(CMN_ANY, wrt_occ_ovfl,           0x09),
1027         CMN_EVENT_RNID(CMN_ANY, txreq_flits_replayed,   0x0a),
1028         CMN_EVENT_RNID(CMN_ANY, wrcancel_sent,          0x0b),
1029         CMN_EVENT_RNID(CMN_ANY, s0_wdata_beats,         0x0c),
1030         CMN_EVENT_RNID(CMN_ANY, s1_wdata_beats,         0x0d),
1031         CMN_EVENT_RNID(CMN_ANY, s2_wdata_beats,         0x0e),
1032         CMN_EVENT_RNID(CMN_ANY, rrt_alloc,              0x0f),
1033         CMN_EVENT_RNID(CMN_ANY, wrt_alloc,              0x10),
1034         CMN_EVENT_RNID(CMN600, rdb_unord,               0x11),
1035         CMN_EVENT_RNID(CMN600, rdb_replay,              0x12),
1036         CMN_EVENT_RNID(CMN600, rdb_hybrid,              0x13),
1037         CMN_EVENT_RNID(CMN600, rdb_ord,                 0x14),
1038         CMN_EVENT_RNID(NOT_CMN600, padb_occ_ovfl,       0x11),
1039         CMN_EVENT_RNID(NOT_CMN600, rpdb_occ_ovfl,       0x12),
1040         CMN_EVENT_RNID(NOT_CMN600, rrt_occup_ovfl_slice1, 0x13),
1041         CMN_EVENT_RNID(NOT_CMN600, rrt_occup_ovfl_slice2, 0x14),
1042         CMN_EVENT_RNID(NOT_CMN600, rrt_occup_ovfl_slice3, 0x15),
1043         CMN_EVENT_RNID(NOT_CMN600, wrt_throttled,       0x16),
1044         CMN_EVENT_RNID(CMN700, ldb_full,                0x17),
1045         CMN_EVENT_RNID(CMN700, rrt_rd_req_occup_ovfl_slice0, 0x18),
1046         CMN_EVENT_RNID(CMN700, rrt_rd_req_occup_ovfl_slice1, 0x19),
1047         CMN_EVENT_RNID(CMN700, rrt_rd_req_occup_ovfl_slice2, 0x1a),
1048         CMN_EVENT_RNID(CMN700, rrt_rd_req_occup_ovfl_slice3, 0x1b),
1049         CMN_EVENT_RNID(CMN700, rrt_burst_occup_ovfl_slice0, 0x1c),
1050         CMN_EVENT_RNID(CMN700, rrt_burst_occup_ovfl_slice1, 0x1d),
1051         CMN_EVENT_RNID(CMN700, rrt_burst_occup_ovfl_slice2, 0x1e),
1052         CMN_EVENT_RNID(CMN700, rrt_burst_occup_ovfl_slice3, 0x1f),
1053         CMN_EVENT_RNID(CMN700, rrt_burst_alloc,         0x20),
1054         CMN_EVENT_RNID(CMN700, awid_hash,               0x21),
1055         CMN_EVENT_RNID(CMN700, atomic_alloc,            0x22),
1056         CMN_EVENT_RNID(CMN700, atomic_occ_ovfl,         0x23),
1057
1058         CMN_EVENT_MTSX(tc_lookup,                       0x01),
1059         CMN_EVENT_MTSX(tc_fill,                         0x02),
1060         CMN_EVENT_MTSX(tc_miss,                         0x03),
1061         CMN_EVENT_MTSX(tdb_forward,                     0x04),
1062         CMN_EVENT_MTSX(tcq_hazard,                      0x05),
1063         CMN_EVENT_MTSX(tcq_rd_alloc,                    0x06),
1064         CMN_EVENT_MTSX(tcq_wr_alloc,                    0x07),
1065         CMN_EVENT_MTSX(tcq_cmo_alloc,                   0x08),
1066         CMN_EVENT_MTSX(axi_rd_req,                      0x09),
1067         CMN_EVENT_MTSX(axi_wr_req,                      0x0a),
1068         CMN_EVENT_MTSX(tcq_occ_cnt_ovfl,                0x0b),
1069         CMN_EVENT_MTSX(tdb_occ_cnt_ovfl,                0x0c),
1070
1071         CMN_EVENT_CXRA(CMN_ANY, rht_occ,                0x01),
1072         CMN_EVENT_CXRA(CMN_ANY, sht_occ,                0x02),
1073         CMN_EVENT_CXRA(CMN_ANY, rdb_occ,                0x03),
1074         CMN_EVENT_CXRA(CMN_ANY, wdb_occ,                0x04),
1075         CMN_EVENT_CXRA(CMN_ANY, ssb_occ,                0x05),
1076         CMN_EVENT_CXRA(CMN_ANY, snp_bcasts,             0x06),
1077         CMN_EVENT_CXRA(CMN_ANY, req_chains,             0x07),
1078         CMN_EVENT_CXRA(CMN_ANY, req_chain_avglen,       0x08),
1079         CMN_EVENT_CXRA(CMN_ANY, chirsp_stalls,          0x09),
1080         CMN_EVENT_CXRA(CMN_ANY, chidat_stalls,          0x0a),
1081         CMN_EVENT_CXRA(CMN_ANY, cxreq_pcrd_stalls_link0, 0x0b),
1082         CMN_EVENT_CXRA(CMN_ANY, cxreq_pcrd_stalls_link1, 0x0c),
1083         CMN_EVENT_CXRA(CMN_ANY, cxreq_pcrd_stalls_link2, 0x0d),
1084         CMN_EVENT_CXRA(CMN_ANY, cxdat_pcrd_stalls_link0, 0x0e),
1085         CMN_EVENT_CXRA(CMN_ANY, cxdat_pcrd_stalls_link1, 0x0f),
1086         CMN_EVENT_CXRA(CMN_ANY, cxdat_pcrd_stalls_link2, 0x10),
1087         CMN_EVENT_CXRA(CMN_ANY, external_chirsp_stalls, 0x11),
1088         CMN_EVENT_CXRA(CMN_ANY, external_chidat_stalls, 0x12),
1089         CMN_EVENT_CXRA(NOT_CMN600, cxmisc_pcrd_stalls_link0, 0x13),
1090         CMN_EVENT_CXRA(NOT_CMN600, cxmisc_pcrd_stalls_link1, 0x14),
1091         CMN_EVENT_CXRA(NOT_CMN600, cxmisc_pcrd_stalls_link2, 0x15),
1092
1093         CMN_EVENT_CXHA(rddatbyp,                        0x21),
1094         CMN_EVENT_CXHA(chirsp_up_stall,                 0x22),
1095         CMN_EVENT_CXHA(chidat_up_stall,                 0x23),
1096         CMN_EVENT_CXHA(snppcrd_link0_stall,             0x24),
1097         CMN_EVENT_CXHA(snppcrd_link1_stall,             0x25),
1098         CMN_EVENT_CXHA(snppcrd_link2_stall,             0x26),
1099         CMN_EVENT_CXHA(reqtrk_occ,                      0x27),
1100         CMN_EVENT_CXHA(rdb_occ,                         0x28),
1101         CMN_EVENT_CXHA(rdbyp_occ,                       0x29),
1102         CMN_EVENT_CXHA(wdb_occ,                         0x2a),
1103         CMN_EVENT_CXHA(snptrk_occ,                      0x2b),
1104         CMN_EVENT_CXHA(sdb_occ,                         0x2c),
1105         CMN_EVENT_CXHA(snphaz_occ,                      0x2d),
1106
1107         CMN_EVENT_CCRA(rht_occ,                         0x41),
1108         CMN_EVENT_CCRA(sht_occ,                         0x42),
1109         CMN_EVENT_CCRA(rdb_occ,                         0x43),
1110         CMN_EVENT_CCRA(wdb_occ,                         0x44),
1111         CMN_EVENT_CCRA(ssb_occ,                         0x45),
1112         CMN_EVENT_CCRA(snp_bcasts,                      0x46),
1113         CMN_EVENT_CCRA(req_chains,                      0x47),
1114         CMN_EVENT_CCRA(req_chain_avglen,                0x48),
1115         CMN_EVENT_CCRA(chirsp_stalls,                   0x49),
1116         CMN_EVENT_CCRA(chidat_stalls,                   0x4a),
1117         CMN_EVENT_CCRA(cxreq_pcrd_stalls_link0,         0x4b),
1118         CMN_EVENT_CCRA(cxreq_pcrd_stalls_link1,         0x4c),
1119         CMN_EVENT_CCRA(cxreq_pcrd_stalls_link2,         0x4d),
1120         CMN_EVENT_CCRA(cxdat_pcrd_stalls_link0,         0x4e),
1121         CMN_EVENT_CCRA(cxdat_pcrd_stalls_link1,         0x4f),
1122         CMN_EVENT_CCRA(cxdat_pcrd_stalls_link2,         0x50),
1123         CMN_EVENT_CCRA(external_chirsp_stalls,          0x51),
1124         CMN_EVENT_CCRA(external_chidat_stalls,          0x52),
1125         CMN_EVENT_CCRA(cxmisc_pcrd_stalls_link0,        0x53),
1126         CMN_EVENT_CCRA(cxmisc_pcrd_stalls_link1,        0x54),
1127         CMN_EVENT_CCRA(cxmisc_pcrd_stalls_link2,        0x55),
1128         CMN_EVENT_CCRA(rht_alloc,                       0x56),
1129         CMN_EVENT_CCRA(sht_alloc,                       0x57),
1130         CMN_EVENT_CCRA(rdb_alloc,                       0x58),
1131         CMN_EVENT_CCRA(wdb_alloc,                       0x59),
1132         CMN_EVENT_CCRA(ssb_alloc,                       0x5a),
1133
1134         CMN_EVENT_CCHA(rddatbyp,                        0x61),
1135         CMN_EVENT_CCHA(chirsp_up_stall,                 0x62),
1136         CMN_EVENT_CCHA(chidat_up_stall,                 0x63),
1137         CMN_EVENT_CCHA(snppcrd_link0_stall,             0x64),
1138         CMN_EVENT_CCHA(snppcrd_link1_stall,             0x65),
1139         CMN_EVENT_CCHA(snppcrd_link2_stall,             0x66),
1140         CMN_EVENT_CCHA(reqtrk_occ,                      0x67),
1141         CMN_EVENT_CCHA(rdb_occ,                         0x68),
1142         CMN_EVENT_CCHA(rdbyp_occ,                       0x69),
1143         CMN_EVENT_CCHA(wdb_occ,                         0x6a),
1144         CMN_EVENT_CCHA(snptrk_occ,                      0x6b),
1145         CMN_EVENT_CCHA(sdb_occ,                         0x6c),
1146         CMN_EVENT_CCHA(snphaz_occ,                      0x6d),
1147         CMN_EVENT_CCHA(reqtrk_alloc,                    0x6e),
1148         CMN_EVENT_CCHA(rdb_alloc,                       0x6f),
1149         CMN_EVENT_CCHA(rdbyp_alloc,                     0x70),
1150         CMN_EVENT_CCHA(wdb_alloc,                       0x71),
1151         CMN_EVENT_CCHA(snptrk_alloc,                    0x72),
1152         CMN_EVENT_CCHA(sdb_alloc,                       0x73),
1153         CMN_EVENT_CCHA(snphaz_alloc,                    0x74),
1154         CMN_EVENT_CCHA(pb_rhu_req_occ,                  0x75),
1155         CMN_EVENT_CCHA(pb_rhu_req_alloc,                0x76),
1156         CMN_EVENT_CCHA(pb_rhu_pcie_req_occ,             0x77),
1157         CMN_EVENT_CCHA(pb_rhu_pcie_req_alloc,           0x78),
1158         CMN_EVENT_CCHA(pb_pcie_wr_req_occ,              0x79),
1159         CMN_EVENT_CCHA(pb_pcie_wr_req_alloc,            0x7a),
1160         CMN_EVENT_CCHA(pb_pcie_reg_req_occ,             0x7b),
1161         CMN_EVENT_CCHA(pb_pcie_reg_req_alloc,           0x7c),
1162         CMN_EVENT_CCHA(pb_pcie_rsvd_req_occ,            0x7d),
1163         CMN_EVENT_CCHA(pb_pcie_rsvd_req_alloc,          0x7e),
1164         CMN_EVENT_CCHA(pb_rhu_dat_occ,                  0x7f),
1165         CMN_EVENT_CCHA(pb_rhu_dat_alloc,                0x80),
1166         CMN_EVENT_CCHA(pb_rhu_pcie_dat_occ,             0x81),
1167         CMN_EVENT_CCHA(pb_rhu_pcie_dat_alloc,           0x82),
1168         CMN_EVENT_CCHA(pb_pcie_wr_dat_occ,              0x83),
1169         CMN_EVENT_CCHA(pb_pcie_wr_dat_alloc,            0x84),
1170
1171         CMN_EVENT_CCLA(rx_cxs,                          0x21),
1172         CMN_EVENT_CCLA(tx_cxs,                          0x22),
1173         CMN_EVENT_CCLA(rx_cxs_avg_size,                 0x23),
1174         CMN_EVENT_CCLA(tx_cxs_avg_size,                 0x24),
1175         CMN_EVENT_CCLA(tx_cxs_lcrd_backpressure,        0x25),
1176         CMN_EVENT_CCLA(link_crdbuf_occ,                 0x26),
1177         CMN_EVENT_CCLA(link_crdbuf_alloc,               0x27),
1178         CMN_EVENT_CCLA(pfwd_rcvr_cxs,                   0x28),
1179         CMN_EVENT_CCLA(pfwd_sndr_num_flits,             0x29),
1180         CMN_EVENT_CCLA(pfwd_sndr_stalls_static_crd,     0x2a),
1181         CMN_EVENT_CCLA(pfwd_sndr_stalls_dynmaic_crd,    0x2b),
1182
1183         CMN_EVENT_HNS_HBT(cache_miss,                   0x01),
1184         CMN_EVENT_HNS_HBT(slc_sf_cache_access,          0x02),
1185         CMN_EVENT_HNS_HBT(cache_fill,                   0x03),
1186         CMN_EVENT_HNS_HBT(pocq_retry,                   0x04),
1187         CMN_EVENT_HNS_HBT(pocq_reqs_recvd,              0x05),
1188         CMN_EVENT_HNS_HBT(sf_hit,                       0x06),
1189         CMN_EVENT_HNS_HBT(sf_evictions,                 0x07),
1190         CMN_EVENT_HNS(dir_snoops_sent,                  0x08),
1191         CMN_EVENT_HNS(brd_snoops_sent,                  0x09),
1192         CMN_EVENT_HNS_HBT(slc_eviction,                 0x0a),
1193         CMN_EVENT_HNS_HBT(slc_fill_invalid_way,         0x0b),
1194         CMN_EVENT_HNS(mc_retries_local,                 0x0c),
1195         CMN_EVENT_HNS_SNH(mc_reqs_local,                0x0d),
1196         CMN_EVENT_HNS(qos_hh_retry,                     0x0e),
1197         CMN_EVENT_HNS_OCC(qos_pocq_occupancy,           0x0f),
1198         CMN_EVENT_HNS(pocq_addrhaz,                     0x10),
1199         CMN_EVENT_HNS(pocq_atomic_addrhaz,              0x11),
1200         CMN_EVENT_HNS(ld_st_swp_adq_full,               0x12),
1201         CMN_EVENT_HNS(cmp_adq_full,                     0x13),
1202         CMN_EVENT_HNS(txdat_stall,                      0x14),
1203         CMN_EVENT_HNS(txrsp_stall,                      0x15),
1204         CMN_EVENT_HNS(seq_full,                         0x16),
1205         CMN_EVENT_HNS(seq_hit,                          0x17),
1206         CMN_EVENT_HNS(snp_sent,                         0x18),
1207         CMN_EVENT_HNS(sfbi_dir_snp_sent,                0x19),
1208         CMN_EVENT_HNS(sfbi_brd_snp_sent,                0x1a),
1209         CMN_EVENT_HNS(intv_dirty,                       0x1c),
1210         CMN_EVENT_HNS(stash_snp_sent,                   0x1d),
1211         CMN_EVENT_HNS(stash_data_pull,                  0x1e),
1212         CMN_EVENT_HNS(snp_fwded,                        0x1f),
1213         CMN_EVENT_HNS(atomic_fwd,                       0x20),
1214         CMN_EVENT_HNS(mpam_hardlim,                     0x21),
1215         CMN_EVENT_HNS(mpam_softlim,                     0x22),
1216         CMN_EVENT_HNS(snp_sent_cluster,                 0x23),
1217         CMN_EVENT_HNS(sf_imprecise_evict,               0x24),
1218         CMN_EVENT_HNS(sf_evict_shared_line,             0x25),
1219         CMN_EVENT_HNS_CLS(pocq_class_occup,             0x26),
1220         CMN_EVENT_HNS_CLS(pocq_class_retry,             0x27),
1221         CMN_EVENT_HNS_CLS(class_mc_reqs_local,          0x28),
1222         CMN_EVENT_HNS_CLS(class_cgnt_cmin,              0x29),
1223         CMN_EVENT_HNS_SNT(sn_throttle,                  0x2a),
1224         CMN_EVENT_HNS_SNT(sn_throttle_min,              0x2b),
1225         CMN_EVENT_HNS(sf_precise_to_imprecise,          0x2c),
1226         CMN_EVENT_HNS(snp_intv_cln,                     0x2d),
1227         CMN_EVENT_HNS(nc_excl,                          0x2e),
1228         CMN_EVENT_HNS(excl_mon_ovfl,                    0x2f),
1229         CMN_EVENT_HNS(snp_req_recvd,                    0x30),
1230         CMN_EVENT_HNS(snp_req_byp_pocq,                 0x31),
1231         CMN_EVENT_HNS(dir_ccgha_snp_sent,               0x32),
1232         CMN_EVENT_HNS(brd_ccgha_snp_sent,               0x33),
1233         CMN_EVENT_HNS(ccgha_snp_stall,                  0x34),
1234         CMN_EVENT_HNS(lbt_req_hardlim,                  0x35),
1235         CMN_EVENT_HNS(hbt_req_hardlim,                  0x36),
1236         CMN_EVENT_HNS(sf_reupdate,                      0x37),
1237         CMN_EVENT_HNS(excl_sf_imprecise,                0x38),
1238         CMN_EVENT_HNS(snp_pocq_addrhaz,                 0x39),
1239         CMN_EVENT_HNS(mc_retries_remote,                0x3a),
1240         CMN_EVENT_HNS_SNH(mc_reqs_remote,               0x3b),
1241         CMN_EVENT_HNS_CLS(class_mc_reqs_remote,         0x3c),
1242
1243         NULL
1244 };
1245
1246 static const struct attribute_group arm_cmn_event_attrs_group = {
1247         .name = "events",
1248         .attrs = arm_cmn_event_attrs,
1249         .is_visible = arm_cmn_event_attr_is_visible,
1250 };
1251
1252 static ssize_t arm_cmn_format_show(struct device *dev,
1253                                    struct device_attribute *attr, char *buf)
1254 {
1255         struct arm_cmn_format_attr *fmt = container_of(attr, typeof(*fmt), attr);
1256         int lo = __ffs(fmt->field), hi = __fls(fmt->field);
1257
1258         if (lo == hi)
1259                 return sysfs_emit(buf, "config:%d\n", lo);
1260
1261         if (!fmt->config)
1262                 return sysfs_emit(buf, "config:%d-%d\n", lo, hi);
1263
1264         return sysfs_emit(buf, "config%d:%d-%d\n", fmt->config, lo, hi);
1265 }
1266
1267 #define _CMN_FORMAT_ATTR(_name, _cfg, _fld)                             \
1268         (&((struct arm_cmn_format_attr[]) {{                            \
1269                 .attr = __ATTR(_name, 0444, arm_cmn_format_show, NULL), \
1270                 .config = _cfg,                                         \
1271                 .field = _fld,                                          \
1272         }})[0].attr.attr)
1273 #define CMN_FORMAT_ATTR(_name, _fld)    _CMN_FORMAT_ATTR(_name, 0, _fld)
1274
1275 static struct attribute *arm_cmn_format_attrs[] = {
1276         CMN_FORMAT_ATTR(type, CMN_CONFIG_TYPE),
1277         CMN_FORMAT_ATTR(eventid, CMN_CONFIG_EVENTID),
1278         CMN_FORMAT_ATTR(occupid, CMN_CONFIG_OCCUPID),
1279         CMN_FORMAT_ATTR(bynodeid, CMN_CONFIG_BYNODEID),
1280         CMN_FORMAT_ATTR(nodeid, CMN_CONFIG_NODEID),
1281
1282         CMN_FORMAT_ATTR(wp_dev_sel, CMN_CONFIG_WP_DEV_SEL),
1283         CMN_FORMAT_ATTR(wp_chn_sel, CMN_CONFIG_WP_CHN_SEL),
1284         CMN_FORMAT_ATTR(wp_grp, CMN_CONFIG_WP_GRP),
1285         CMN_FORMAT_ATTR(wp_exclusive, CMN_CONFIG_WP_EXCLUSIVE),
1286         CMN_FORMAT_ATTR(wp_combine, CMN_CONFIG_WP_COMBINE),
1287
1288         _CMN_FORMAT_ATTR(wp_val, 1, CMN_CONFIG1_WP_VAL),
1289         _CMN_FORMAT_ATTR(wp_mask, 2, CMN_CONFIG2_WP_MASK),
1290
1291         NULL
1292 };
1293
1294 static const struct attribute_group arm_cmn_format_attrs_group = {
1295         .name = "format",
1296         .attrs = arm_cmn_format_attrs,
1297 };
1298
1299 static ssize_t arm_cmn_cpumask_show(struct device *dev,
1300                                     struct device_attribute *attr, char *buf)
1301 {
1302         struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
1303
1304         return cpumap_print_to_pagebuf(true, buf, cpumask_of(cmn->cpu));
1305 }
1306
1307 static struct device_attribute arm_cmn_cpumask_attr =
1308                 __ATTR(cpumask, 0444, arm_cmn_cpumask_show, NULL);
1309
1310 static ssize_t arm_cmn_identifier_show(struct device *dev,
1311                                        struct device_attribute *attr, char *buf)
1312 {
1313         struct arm_cmn *cmn = to_cmn(dev_get_drvdata(dev));
1314
1315         return sysfs_emit(buf, "%03x%02x\n", cmn->part, cmn->rev);
1316 }
1317
1318 static struct device_attribute arm_cmn_identifier_attr =
1319                 __ATTR(identifier, 0444, arm_cmn_identifier_show, NULL);
1320
1321 static struct attribute *arm_cmn_other_attrs[] = {
1322         &arm_cmn_cpumask_attr.attr,
1323         &arm_cmn_identifier_attr.attr,
1324         NULL,
1325 };
1326
1327 static const struct attribute_group arm_cmn_other_attrs_group = {
1328         .attrs = arm_cmn_other_attrs,
1329 };
1330
1331 static const struct attribute_group *arm_cmn_attr_groups[] = {
1332         &arm_cmn_event_attrs_group,
1333         &arm_cmn_format_attrs_group,
1334         &arm_cmn_other_attrs_group,
1335         NULL
1336 };
1337
1338 static int arm_cmn_wp_idx(struct perf_event *event)
1339 {
1340         return CMN_EVENT_EVENTID(event) + CMN_EVENT_WP_GRP(event);
1341 }
1342
1343 static u32 arm_cmn_wp_config(struct perf_event *event)
1344 {
1345         u32 config;
1346         u32 dev = CMN_EVENT_WP_DEV_SEL(event);
1347         u32 chn = CMN_EVENT_WP_CHN_SEL(event);
1348         u32 grp = CMN_EVENT_WP_GRP(event);
1349         u32 exc = CMN_EVENT_WP_EXCLUSIVE(event);
1350         u32 combine = CMN_EVENT_WP_COMBINE(event);
1351         bool is_cmn600 = to_cmn(event->pmu)->part == PART_CMN600;
1352
1353         config = FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_DEV_SEL, dev) |
1354                  FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_CHN_SEL, chn) |
1355                  FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_GRP, grp) |
1356                  FIELD_PREP(CMN_DTM_WPn_CONFIG_WP_DEV_SEL2, dev >> 1);
1357         if (exc)
1358                 config |= is_cmn600 ? CMN600_WPn_CONFIG_WP_EXCLUSIVE :
1359                                       CMN_DTM_WPn_CONFIG_WP_EXCLUSIVE;
1360         if (combine && !grp)
1361                 config |= is_cmn600 ? CMN600_WPn_CONFIG_WP_COMBINE :
1362                                       CMN_DTM_WPn_CONFIG_WP_COMBINE;
1363         return config;
1364 }
1365
1366 static void arm_cmn_set_state(struct arm_cmn *cmn, u32 state)
1367 {
1368         if (!cmn->state)
1369                 writel_relaxed(0, cmn->dtc[0].base + CMN_DT_PMCR);
1370         cmn->state |= state;
1371 }
1372
1373 static void arm_cmn_clear_state(struct arm_cmn *cmn, u32 state)
1374 {
1375         cmn->state &= ~state;
1376         if (!cmn->state)
1377                 writel_relaxed(CMN_DT_PMCR_PMU_EN | CMN_DT_PMCR_OVFL_INTR_EN,
1378                                cmn->dtc[0].base + CMN_DT_PMCR);
1379 }
1380
1381 static void arm_cmn_pmu_enable(struct pmu *pmu)
1382 {
1383         arm_cmn_clear_state(to_cmn(pmu), CMN_STATE_DISABLED);
1384 }
1385
1386 static void arm_cmn_pmu_disable(struct pmu *pmu)
1387 {
1388         arm_cmn_set_state(to_cmn(pmu), CMN_STATE_DISABLED);
1389 }
1390
1391 static u64 arm_cmn_read_dtm(struct arm_cmn *cmn, struct arm_cmn_hw_event *hw,
1392                             bool snapshot)
1393 {
1394         struct arm_cmn_dtm *dtm = NULL;
1395         struct arm_cmn_node *dn;
1396         unsigned int i, offset, dtm_idx;
1397         u64 reg, count = 0;
1398
1399         offset = snapshot ? CMN_DTM_PMEVCNTSR : CMN_DTM_PMEVCNT;
1400         for_each_hw_dn(hw, dn, i) {
1401                 if (dtm != &cmn->dtms[dn->dtm]) {
1402                         dtm = &cmn->dtms[dn->dtm] + hw->dtm_offset;
1403                         reg = readq_relaxed(dtm->base + offset);
1404                 }
1405                 dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
1406                 count += (u16)(reg >> (dtm_idx * 16));
1407         }
1408         return count;
1409 }
1410
1411 static u64 arm_cmn_read_cc(struct arm_cmn_dtc *dtc)
1412 {
1413         u64 val = readq_relaxed(dtc->base + CMN_DT_PMCCNTR);
1414
1415         writeq_relaxed(CMN_CC_INIT, dtc->base + CMN_DT_PMCCNTR);
1416         return (val - CMN_CC_INIT) & ((CMN_CC_INIT << 1) - 1);
1417 }
1418
1419 static u32 arm_cmn_read_counter(struct arm_cmn_dtc *dtc, int idx)
1420 {
1421         u32 val, pmevcnt = CMN_DT_PMEVCNT(idx);
1422
1423         val = readl_relaxed(dtc->base + pmevcnt);
1424         writel_relaxed(CMN_COUNTER_INIT, dtc->base + pmevcnt);
1425         return val - CMN_COUNTER_INIT;
1426 }
1427
1428 static void arm_cmn_init_counter(struct perf_event *event)
1429 {
1430         struct arm_cmn *cmn = to_cmn(event->pmu);
1431         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1432         unsigned int i, pmevcnt = CMN_DT_PMEVCNT(hw->dtc_idx);
1433         u64 count;
1434
1435         for (i = 0; hw->dtcs_used & (1U << i); i++) {
1436                 writel_relaxed(CMN_COUNTER_INIT, cmn->dtc[i].base + pmevcnt);
1437                 cmn->dtc[i].counters[hw->dtc_idx] = event;
1438         }
1439
1440         count = arm_cmn_read_dtm(cmn, hw, false);
1441         local64_set(&event->hw.prev_count, count);
1442 }
1443
1444 static void arm_cmn_event_read(struct perf_event *event)
1445 {
1446         struct arm_cmn *cmn = to_cmn(event->pmu);
1447         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1448         u64 delta, new, prev;
1449         unsigned long flags;
1450         unsigned int i;
1451
1452         if (hw->dtc_idx == CMN_DT_NUM_COUNTERS) {
1453                 i = __ffs(hw->dtcs_used);
1454                 delta = arm_cmn_read_cc(cmn->dtc + i);
1455                 local64_add(delta, &event->count);
1456                 return;
1457         }
1458         new = arm_cmn_read_dtm(cmn, hw, false);
1459         prev = local64_xchg(&event->hw.prev_count, new);
1460
1461         delta = new - prev;
1462
1463         local_irq_save(flags);
1464         for (i = 0; hw->dtcs_used & (1U << i); i++) {
1465                 new = arm_cmn_read_counter(cmn->dtc + i, hw->dtc_idx);
1466                 delta += new << 16;
1467         }
1468         local_irq_restore(flags);
1469         local64_add(delta, &event->count);
1470 }
1471
1472 static int arm_cmn_set_event_sel_hi(struct arm_cmn_node *dn,
1473                                     enum cmn_filter_select fsel, u8 occupid)
1474 {
1475         u64 reg;
1476
1477         if (fsel == SEL_NONE)
1478                 return 0;
1479
1480         if (!dn->occupid[fsel].count) {
1481                 dn->occupid[fsel].val = occupid;
1482                 reg = FIELD_PREP(CMN__PMU_CBUSY_SNTHROTTLE_SEL,
1483                                  dn->occupid[SEL_CBUSY_SNTHROTTLE_SEL].val) |
1484                       FIELD_PREP(CMN__PMU_SN_HOME_SEL,
1485                                  dn->occupid[SEL_SN_HOME_SEL].val) |
1486                       FIELD_PREP(CMN__PMU_HBT_LBT_SEL,
1487                                  dn->occupid[SEL_HBT_LBT_SEL].val) |
1488                       FIELD_PREP(CMN__PMU_CLASS_OCCUP_ID,
1489                                  dn->occupid[SEL_CLASS_OCCUP_ID].val) |
1490                       FIELD_PREP(CMN__PMU_OCCUP1_ID,
1491                                  dn->occupid[SEL_OCCUP1ID].val);
1492                 writel_relaxed(reg >> 32, dn->pmu_base + CMN_PMU_EVENT_SEL + 4);
1493         } else if (dn->occupid[fsel].val != occupid) {
1494                 return -EBUSY;
1495         }
1496         dn->occupid[fsel].count++;
1497         return 0;
1498 }
1499
1500 static void arm_cmn_set_event_sel_lo(struct arm_cmn_node *dn, int dtm_idx,
1501                                      int eventid, bool wide_sel)
1502 {
1503         if (wide_sel) {
1504                 dn->event_w[dtm_idx] = eventid;
1505                 writeq_relaxed(le64_to_cpu(dn->event_sel_w), dn->pmu_base + CMN_PMU_EVENT_SEL);
1506         } else {
1507                 dn->event[dtm_idx] = eventid;
1508                 writel_relaxed(le32_to_cpu(dn->event_sel), dn->pmu_base + CMN_PMU_EVENT_SEL);
1509         }
1510 }
1511
1512 static void arm_cmn_event_start(struct perf_event *event, int flags)
1513 {
1514         struct arm_cmn *cmn = to_cmn(event->pmu);
1515         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1516         struct arm_cmn_node *dn;
1517         enum cmn_node_type type = CMN_EVENT_TYPE(event);
1518         int i;
1519
1520         if (type == CMN_TYPE_DTC) {
1521                 i = __ffs(hw->dtcs_used);
1522                 writeq_relaxed(CMN_CC_INIT, cmn->dtc[i].base + CMN_DT_PMCCNTR);
1523                 cmn->dtc[i].cc_active = true;
1524         } else if (type == CMN_TYPE_WP) {
1525                 int wp_idx = arm_cmn_wp_idx(event);
1526                 u64 val = CMN_EVENT_WP_VAL(event);
1527                 u64 mask = CMN_EVENT_WP_MASK(event);
1528
1529                 for_each_hw_dn(hw, dn, i) {
1530                         void __iomem *base = dn->pmu_base + CMN_DTM_OFFSET(hw->dtm_offset);
1531
1532                         writeq_relaxed(val, base + CMN_DTM_WPn_VAL(wp_idx));
1533                         writeq_relaxed(mask, base + CMN_DTM_WPn_MASK(wp_idx));
1534                 }
1535         } else for_each_hw_dn(hw, dn, i) {
1536                 int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
1537
1538                 arm_cmn_set_event_sel_lo(dn, dtm_idx, CMN_EVENT_EVENTID(event),
1539                                          hw->wide_sel);
1540         }
1541 }
1542
1543 static void arm_cmn_event_stop(struct perf_event *event, int flags)
1544 {
1545         struct arm_cmn *cmn = to_cmn(event->pmu);
1546         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1547         struct arm_cmn_node *dn;
1548         enum cmn_node_type type = CMN_EVENT_TYPE(event);
1549         int i;
1550
1551         if (type == CMN_TYPE_DTC) {
1552                 i = __ffs(hw->dtcs_used);
1553                 cmn->dtc[i].cc_active = false;
1554         } else if (type == CMN_TYPE_WP) {
1555                 int wp_idx = arm_cmn_wp_idx(event);
1556
1557                 for_each_hw_dn(hw, dn, i) {
1558                         void __iomem *base = dn->pmu_base + CMN_DTM_OFFSET(hw->dtm_offset);
1559
1560                         writeq_relaxed(0, base + CMN_DTM_WPn_MASK(wp_idx));
1561                         writeq_relaxed(~0ULL, base + CMN_DTM_WPn_VAL(wp_idx));
1562                 }
1563         } else for_each_hw_dn(hw, dn, i) {
1564                 int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
1565
1566                 arm_cmn_set_event_sel_lo(dn, dtm_idx, 0, hw->wide_sel);
1567         }
1568
1569         arm_cmn_event_read(event);
1570 }
1571
1572 struct arm_cmn_val {
1573         u8 dtm_count[CMN_MAX_DTMS];
1574         u8 occupid[CMN_MAX_DTMS][SEL_MAX];
1575         u8 wp[CMN_MAX_DTMS][4];
1576         int dtc_count;
1577         bool cycles;
1578 };
1579
1580 static void arm_cmn_val_add_event(struct arm_cmn *cmn, struct arm_cmn_val *val,
1581                                   struct perf_event *event)
1582 {
1583         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1584         struct arm_cmn_node *dn;
1585         enum cmn_node_type type;
1586         int i;
1587
1588         if (is_software_event(event))
1589                 return;
1590
1591         type = CMN_EVENT_TYPE(event);
1592         if (type == CMN_TYPE_DTC) {
1593                 val->cycles = true;
1594                 return;
1595         }
1596
1597         val->dtc_count++;
1598
1599         for_each_hw_dn(hw, dn, i) {
1600                 int wp_idx, dtm = dn->dtm, sel = hw->filter_sel;
1601
1602                 val->dtm_count[dtm]++;
1603
1604                 if (sel > SEL_NONE)
1605                         val->occupid[dtm][sel] = CMN_EVENT_OCCUPID(event) + 1;
1606
1607                 if (type != CMN_TYPE_WP)
1608                         continue;
1609
1610                 wp_idx = arm_cmn_wp_idx(event);
1611                 val->wp[dtm][wp_idx] = CMN_EVENT_WP_COMBINE(event) + 1;
1612         }
1613 }
1614
1615 static int arm_cmn_validate_group(struct arm_cmn *cmn, struct perf_event *event)
1616 {
1617         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1618         struct arm_cmn_node *dn;
1619         struct perf_event *sibling, *leader = event->group_leader;
1620         enum cmn_node_type type;
1621         struct arm_cmn_val *val;
1622         int i, ret = -EINVAL;
1623
1624         if (leader == event)
1625                 return 0;
1626
1627         if (event->pmu != leader->pmu && !is_software_event(leader))
1628                 return -EINVAL;
1629
1630         val = kzalloc(sizeof(*val), GFP_KERNEL);
1631         if (!val)
1632                 return -ENOMEM;
1633
1634         arm_cmn_val_add_event(cmn, val, leader);
1635         for_each_sibling_event(sibling, leader)
1636                 arm_cmn_val_add_event(cmn, val, sibling);
1637
1638         type = CMN_EVENT_TYPE(event);
1639         if (type == CMN_TYPE_DTC) {
1640                 ret = val->cycles ? -EINVAL : 0;
1641                 goto done;
1642         }
1643
1644         if (val->dtc_count == CMN_DT_NUM_COUNTERS)
1645                 goto done;
1646
1647         for_each_hw_dn(hw, dn, i) {
1648                 int wp_idx, wp_cmb, dtm = dn->dtm, sel = hw->filter_sel;
1649
1650                 if (val->dtm_count[dtm] == CMN_DTM_NUM_COUNTERS)
1651                         goto done;
1652
1653                 if (sel > SEL_NONE && val->occupid[dtm][sel] &&
1654                     val->occupid[dtm][sel] != CMN_EVENT_OCCUPID(event) + 1)
1655                         goto done;
1656
1657                 if (type != CMN_TYPE_WP)
1658                         continue;
1659
1660                 wp_idx = arm_cmn_wp_idx(event);
1661                 if (val->wp[dtm][wp_idx])
1662                         goto done;
1663
1664                 wp_cmb = val->wp[dtm][wp_idx ^ 1];
1665                 if (wp_cmb && wp_cmb != CMN_EVENT_WP_COMBINE(event) + 1)
1666                         goto done;
1667         }
1668
1669         ret = 0;
1670 done:
1671         kfree(val);
1672         return ret;
1673 }
1674
1675 static enum cmn_filter_select arm_cmn_filter_sel(const struct arm_cmn *cmn,
1676                                                  enum cmn_node_type type,
1677                                                  unsigned int eventid)
1678 {
1679         struct arm_cmn_event_attr *e;
1680         enum cmn_model model = arm_cmn_model(cmn);
1681
1682         for (int i = 0; i < ARRAY_SIZE(arm_cmn_event_attrs) - 1; i++) {
1683                 e = container_of(arm_cmn_event_attrs[i], typeof(*e), attr.attr);
1684                 if (e->model & model && e->type == type && e->eventid == eventid)
1685                         return e->fsel;
1686         }
1687         return SEL_NONE;
1688 }
1689
1690
1691 static int arm_cmn_event_init(struct perf_event *event)
1692 {
1693         struct arm_cmn *cmn = to_cmn(event->pmu);
1694         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1695         struct arm_cmn_node *dn;
1696         enum cmn_node_type type;
1697         bool bynodeid;
1698         u16 nodeid, eventid;
1699
1700         if (event->attr.type != event->pmu->type)
1701                 return -ENOENT;
1702
1703         if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
1704                 return -EINVAL;
1705
1706         event->cpu = cmn->cpu;
1707         if (event->cpu < 0)
1708                 return -EINVAL;
1709
1710         type = CMN_EVENT_TYPE(event);
1711         /* DTC events (i.e. cycles) already have everything they need */
1712         if (type == CMN_TYPE_DTC)
1713                 return arm_cmn_validate_group(cmn, event);
1714
1715         eventid = CMN_EVENT_EVENTID(event);
1716         /* For watchpoints we need the actual XP node here */
1717         if (type == CMN_TYPE_WP) {
1718                 type = CMN_TYPE_XP;
1719                 /* ...and we need a "real" direction */
1720                 if (eventid != CMN_WP_UP && eventid != CMN_WP_DOWN)
1721                         return -EINVAL;
1722                 /* ...but the DTM may depend on which port we're watching */
1723                 if (cmn->multi_dtm)
1724                         hw->dtm_offset = CMN_EVENT_WP_DEV_SEL(event) / 2;
1725         } else if (type == CMN_TYPE_XP && cmn->part == PART_CMN700) {
1726                 hw->wide_sel = true;
1727         }
1728
1729         /* This is sufficiently annoying to recalculate, so cache it */
1730         hw->filter_sel = arm_cmn_filter_sel(cmn, type, eventid);
1731
1732         bynodeid = CMN_EVENT_BYNODEID(event);
1733         nodeid = CMN_EVENT_NODEID(event);
1734
1735         hw->dn = arm_cmn_node(cmn, type);
1736         if (!hw->dn)
1737                 return -EINVAL;
1738         for (dn = hw->dn; dn->type == type; dn++) {
1739                 if (bynodeid && dn->id != nodeid) {
1740                         hw->dn++;
1741                         continue;
1742                 }
1743                 hw->num_dns++;
1744                 if (bynodeid)
1745                         break;
1746         }
1747
1748         if (!hw->num_dns) {
1749                 struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, nodeid);
1750
1751                 dev_dbg(cmn->dev, "invalid node 0x%x (%d,%d,%d,%d) type 0x%x\n",
1752                         nodeid, nid.x, nid.y, nid.port, nid.dev, type);
1753                 return -EINVAL;
1754         }
1755         /*
1756          * Keep assuming non-cycles events count in all DTC domains; turns out
1757          * it's hard to make a worthwhile optimisation around this, short of
1758          * going all-in with domain-local counter allocation as well.
1759          */
1760         hw->dtcs_used = (1U << cmn->num_dtcs) - 1;
1761
1762         return arm_cmn_validate_group(cmn, event);
1763 }
1764
1765 static void arm_cmn_event_clear(struct arm_cmn *cmn, struct perf_event *event,
1766                                 int i)
1767 {
1768         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1769         enum cmn_node_type type = CMN_EVENT_TYPE(event);
1770
1771         while (i--) {
1772                 struct arm_cmn_dtm *dtm = &cmn->dtms[hw->dn[i].dtm] + hw->dtm_offset;
1773                 unsigned int dtm_idx = arm_cmn_get_index(hw->dtm_idx, i);
1774
1775                 if (type == CMN_TYPE_WP)
1776                         dtm->wp_event[arm_cmn_wp_idx(event)] = -1;
1777
1778                 if (hw->filter_sel > SEL_NONE)
1779                         hw->dn[i].occupid[hw->filter_sel].count--;
1780
1781                 dtm->pmu_config_low &= ~CMN__PMEVCNT_PAIRED(dtm_idx);
1782                 writel_relaxed(dtm->pmu_config_low, dtm->base + CMN_DTM_PMU_CONFIG);
1783         }
1784         memset(hw->dtm_idx, 0, sizeof(hw->dtm_idx));
1785
1786         for (i = 0; hw->dtcs_used & (1U << i); i++)
1787                 cmn->dtc[i].counters[hw->dtc_idx] = NULL;
1788 }
1789
1790 static int arm_cmn_event_add(struct perf_event *event, int flags)
1791 {
1792         struct arm_cmn *cmn = to_cmn(event->pmu);
1793         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1794         struct arm_cmn_dtc *dtc = &cmn->dtc[0];
1795         struct arm_cmn_node *dn;
1796         enum cmn_node_type type = CMN_EVENT_TYPE(event);
1797         unsigned int i, dtc_idx, input_sel;
1798
1799         if (type == CMN_TYPE_DTC) {
1800                 i = 0;
1801                 while (cmn->dtc[i].cycles)
1802                         if (++i == cmn->num_dtcs)
1803                                 return -ENOSPC;
1804
1805                 cmn->dtc[i].cycles = event;
1806                 hw->dtc_idx = CMN_DT_NUM_COUNTERS;
1807                 hw->dtcs_used = 1U << i;
1808
1809                 if (flags & PERF_EF_START)
1810                         arm_cmn_event_start(event, 0);
1811                 return 0;
1812         }
1813
1814         /* Grab a free global counter first... */
1815         dtc_idx = 0;
1816         while (dtc->counters[dtc_idx])
1817                 if (++dtc_idx == CMN_DT_NUM_COUNTERS)
1818                         return -ENOSPC;
1819
1820         hw->dtc_idx = dtc_idx;
1821
1822         /* ...then the local counters to feed it. */
1823         for_each_hw_dn(hw, dn, i) {
1824                 struct arm_cmn_dtm *dtm = &cmn->dtms[dn->dtm] + hw->dtm_offset;
1825                 unsigned int dtm_idx, shift;
1826                 u64 reg;
1827
1828                 dtm_idx = 0;
1829                 while (dtm->pmu_config_low & CMN__PMEVCNT_PAIRED(dtm_idx))
1830                         if (++dtm_idx == CMN_DTM_NUM_COUNTERS)
1831                                 goto free_dtms;
1832
1833                 if (type == CMN_TYPE_XP) {
1834                         input_sel = CMN__PMEVCNT0_INPUT_SEL_XP + dtm_idx;
1835                 } else if (type == CMN_TYPE_WP) {
1836                         int tmp, wp_idx = arm_cmn_wp_idx(event);
1837                         u32 cfg = arm_cmn_wp_config(event);
1838
1839                         if (dtm->wp_event[wp_idx] >= 0)
1840                                 goto free_dtms;
1841
1842                         tmp = dtm->wp_event[wp_idx ^ 1];
1843                         if (tmp >= 0 && CMN_EVENT_WP_COMBINE(event) !=
1844                                         CMN_EVENT_WP_COMBINE(dtc->counters[tmp]))
1845                                 goto free_dtms;
1846
1847                         input_sel = CMN__PMEVCNT0_INPUT_SEL_WP + wp_idx;
1848                         dtm->wp_event[wp_idx] = dtc_idx;
1849                         writel_relaxed(cfg, dtm->base + CMN_DTM_WPn_CONFIG(wp_idx));
1850                 } else {
1851                         struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, dn->id);
1852
1853                         if (cmn->multi_dtm)
1854                                 nid.port %= 2;
1855
1856                         input_sel = CMN__PMEVCNT0_INPUT_SEL_DEV + dtm_idx +
1857                                     (nid.port << 4) + (nid.dev << 2);
1858
1859                         if (arm_cmn_set_event_sel_hi(dn, hw->filter_sel, CMN_EVENT_OCCUPID(event)))
1860                                 goto free_dtms;
1861                 }
1862
1863                 arm_cmn_set_index(hw->dtm_idx, i, dtm_idx);
1864
1865                 dtm->input_sel[dtm_idx] = input_sel;
1866                 shift = CMN__PMEVCNTn_GLOBAL_NUM_SHIFT(dtm_idx);
1867                 dtm->pmu_config_low &= ~(CMN__PMEVCNT0_GLOBAL_NUM << shift);
1868                 dtm->pmu_config_low |= FIELD_PREP(CMN__PMEVCNT0_GLOBAL_NUM, dtc_idx) << shift;
1869                 dtm->pmu_config_low |= CMN__PMEVCNT_PAIRED(dtm_idx);
1870                 reg = (u64)le32_to_cpu(dtm->pmu_config_high) << 32 | dtm->pmu_config_low;
1871                 writeq_relaxed(reg, dtm->base + CMN_DTM_PMU_CONFIG);
1872         }
1873
1874         /* Go go go! */
1875         arm_cmn_init_counter(event);
1876
1877         if (flags & PERF_EF_START)
1878                 arm_cmn_event_start(event, 0);
1879
1880         return 0;
1881
1882 free_dtms:
1883         arm_cmn_event_clear(cmn, event, i);
1884         return -ENOSPC;
1885 }
1886
1887 static void arm_cmn_event_del(struct perf_event *event, int flags)
1888 {
1889         struct arm_cmn *cmn = to_cmn(event->pmu);
1890         struct arm_cmn_hw_event *hw = to_cmn_hw(event);
1891         enum cmn_node_type type = CMN_EVENT_TYPE(event);
1892
1893         arm_cmn_event_stop(event, PERF_EF_UPDATE);
1894
1895         if (type == CMN_TYPE_DTC)
1896                 cmn->dtc[__ffs(hw->dtcs_used)].cycles = NULL;
1897         else
1898                 arm_cmn_event_clear(cmn, event, hw->num_dns);
1899 }
1900
1901 /*
1902  * We stop the PMU for both add and read, to avoid skew across DTM counters.
1903  * In theory we could use snapshots to read without stopping, but then it
1904  * becomes a lot trickier to deal with overlow and racing against interrupts,
1905  * plus it seems they don't work properly on some hardware anyway :(
1906  */
1907 static void arm_cmn_start_txn(struct pmu *pmu, unsigned int flags)
1908 {
1909         arm_cmn_set_state(to_cmn(pmu), CMN_STATE_TXN);
1910 }
1911
1912 static void arm_cmn_end_txn(struct pmu *pmu)
1913 {
1914         arm_cmn_clear_state(to_cmn(pmu), CMN_STATE_TXN);
1915 }
1916
1917 static int arm_cmn_commit_txn(struct pmu *pmu)
1918 {
1919         arm_cmn_end_txn(pmu);
1920         return 0;
1921 }
1922
1923 static void arm_cmn_migrate(struct arm_cmn *cmn, unsigned int cpu)
1924 {
1925         unsigned int i;
1926
1927         perf_pmu_migrate_context(&cmn->pmu, cmn->cpu, cpu);
1928         for (i = 0; i < cmn->num_dtcs; i++)
1929                 irq_set_affinity(cmn->dtc[i].irq, cpumask_of(cpu));
1930         cmn->cpu = cpu;
1931 }
1932
1933 static int arm_cmn_pmu_online_cpu(unsigned int cpu, struct hlist_node *cpuhp_node)
1934 {
1935         struct arm_cmn *cmn;
1936         int node;
1937
1938         cmn = hlist_entry_safe(cpuhp_node, struct arm_cmn, cpuhp_node);
1939         node = dev_to_node(cmn->dev);
1940         if (node != NUMA_NO_NODE && cpu_to_node(cmn->cpu) != node && cpu_to_node(cpu) == node)
1941                 arm_cmn_migrate(cmn, cpu);
1942         return 0;
1943 }
1944
1945 static int arm_cmn_pmu_offline_cpu(unsigned int cpu, struct hlist_node *cpuhp_node)
1946 {
1947         struct arm_cmn *cmn;
1948         unsigned int target;
1949         int node;
1950         cpumask_t mask;
1951
1952         cmn = hlist_entry_safe(cpuhp_node, struct arm_cmn, cpuhp_node);
1953         if (cpu != cmn->cpu)
1954                 return 0;
1955
1956         node = dev_to_node(cmn->dev);
1957         if (cpumask_and(&mask, cpumask_of_node(node), cpu_online_mask) &&
1958             cpumask_andnot(&mask, &mask, cpumask_of(cpu)))
1959                 target = cpumask_any(&mask);
1960         else
1961                 target = cpumask_any_but(cpu_online_mask, cpu);
1962         if (target < nr_cpu_ids)
1963                 arm_cmn_migrate(cmn, target);
1964         return 0;
1965 }
1966
1967 static irqreturn_t arm_cmn_handle_irq(int irq, void *dev_id)
1968 {
1969         struct arm_cmn_dtc *dtc = dev_id;
1970         irqreturn_t ret = IRQ_NONE;
1971
1972         for (;;) {
1973                 u32 status = readl_relaxed(dtc->base + CMN_DT_PMOVSR);
1974                 u64 delta;
1975                 int i;
1976
1977                 for (i = 0; i < CMN_DT_NUM_COUNTERS; i++) {
1978                         if (status & (1U << i)) {
1979                                 ret = IRQ_HANDLED;
1980                                 if (WARN_ON(!dtc->counters[i]))
1981                                         continue;
1982                                 delta = (u64)arm_cmn_read_counter(dtc, i) << 16;
1983                                 local64_add(delta, &dtc->counters[i]->count);
1984                         }
1985                 }
1986
1987                 if (status & (1U << CMN_DT_NUM_COUNTERS)) {
1988                         ret = IRQ_HANDLED;
1989                         if (dtc->cc_active && !WARN_ON(!dtc->cycles)) {
1990                                 delta = arm_cmn_read_cc(dtc);
1991                                 local64_add(delta, &dtc->cycles->count);
1992                         }
1993                 }
1994
1995                 writel_relaxed(status, dtc->base + CMN_DT_PMOVSR_CLR);
1996
1997                 if (!dtc->irq_friend)
1998                         return ret;
1999                 dtc += dtc->irq_friend;
2000         }
2001 }
2002
2003 /* We can reasonably accommodate DTCs of the same CMN sharing IRQs */
2004 static int arm_cmn_init_irqs(struct arm_cmn *cmn)
2005 {
2006         int i, j, irq, err;
2007
2008         for (i = 0; i < cmn->num_dtcs; i++) {
2009                 irq = cmn->dtc[i].irq;
2010                 for (j = i; j--; ) {
2011                         if (cmn->dtc[j].irq == irq) {
2012                                 cmn->dtc[j].irq_friend = i - j;
2013                                 goto next;
2014                         }
2015                 }
2016                 err = devm_request_irq(cmn->dev, irq, arm_cmn_handle_irq,
2017                                        IRQF_NOBALANCING | IRQF_NO_THREAD,
2018                                        dev_name(cmn->dev), &cmn->dtc[i]);
2019                 if (err)
2020                         return err;
2021
2022                 err = irq_set_affinity(irq, cpumask_of(cmn->cpu));
2023                 if (err)
2024                         return err;
2025         next:
2026                 ; /* isn't C great? */
2027         }
2028         return 0;
2029 }
2030
2031 static void arm_cmn_init_dtm(struct arm_cmn_dtm *dtm, struct arm_cmn_node *xp, int idx)
2032 {
2033         int i;
2034
2035         dtm->base = xp->pmu_base + CMN_DTM_OFFSET(idx);
2036         dtm->pmu_config_low = CMN_DTM_PMU_CONFIG_PMU_EN;
2037         writeq_relaxed(dtm->pmu_config_low, dtm->base + CMN_DTM_PMU_CONFIG);
2038         for (i = 0; i < 4; i++) {
2039                 dtm->wp_event[i] = -1;
2040                 writeq_relaxed(0, dtm->base + CMN_DTM_WPn_MASK(i));
2041                 writeq_relaxed(~0ULL, dtm->base + CMN_DTM_WPn_VAL(i));
2042         }
2043 }
2044
2045 static int arm_cmn_init_dtc(struct arm_cmn *cmn, struct arm_cmn_node *dn, int idx)
2046 {
2047         struct arm_cmn_dtc *dtc = cmn->dtc + idx;
2048
2049         dtc->base = dn->pmu_base - CMN_PMU_OFFSET;
2050         dtc->irq = platform_get_irq(to_platform_device(cmn->dev), idx);
2051         if (dtc->irq < 0)
2052                 return dtc->irq;
2053
2054         writel_relaxed(CMN_DT_DTC_CTL_DT_EN, dtc->base + CMN_DT_DTC_CTL);
2055         writel_relaxed(CMN_DT_PMCR_PMU_EN | CMN_DT_PMCR_OVFL_INTR_EN, dtc->base + CMN_DT_PMCR);
2056         writeq_relaxed(0, dtc->base + CMN_DT_PMCCNTR);
2057         writel_relaxed(0x1ff, dtc->base + CMN_DT_PMOVSR_CLR);
2058
2059         return 0;
2060 }
2061
2062 static int arm_cmn_node_cmp(const void *a, const void *b)
2063 {
2064         const struct arm_cmn_node *dna = a, *dnb = b;
2065         int cmp;
2066
2067         cmp = dna->type - dnb->type;
2068         if (!cmp)
2069                 cmp = dna->logid - dnb->logid;
2070         return cmp;
2071 }
2072
2073 static int arm_cmn_init_dtcs(struct arm_cmn *cmn)
2074 {
2075         struct arm_cmn_node *dn, *xp;
2076         int dtc_idx = 0;
2077         u8 dtcs_present = (1 << cmn->num_dtcs) - 1;
2078
2079         cmn->dtc = devm_kcalloc(cmn->dev, cmn->num_dtcs, sizeof(cmn->dtc[0]), GFP_KERNEL);
2080         if (!cmn->dtc)
2081                 return -ENOMEM;
2082
2083         sort(cmn->dns, cmn->num_dns, sizeof(cmn->dns[0]), arm_cmn_node_cmp, NULL);
2084
2085         cmn->xps = arm_cmn_node(cmn, CMN_TYPE_XP);
2086
2087         for (dn = cmn->dns; dn->type; dn++) {
2088                 if (dn->type == CMN_TYPE_XP) {
2089                         dn->dtc &= dtcs_present;
2090                         continue;
2091                 }
2092
2093                 xp = arm_cmn_node_to_xp(cmn, dn);
2094                 dn->dtm = xp->dtm;
2095                 if (cmn->multi_dtm)
2096                         dn->dtm += arm_cmn_nid(cmn, dn->id).port / 2;
2097
2098                 if (dn->type == CMN_TYPE_DTC) {
2099                         int err;
2100                         /* We do at least know that a DTC's XP must be in that DTC's domain */
2101                         if (xp->dtc == 0xf)
2102                                 xp->dtc = 1 << dtc_idx;
2103                         err = arm_cmn_init_dtc(cmn, dn, dtc_idx++);
2104                         if (err)
2105                                 return err;
2106                 }
2107
2108                 /* To the PMU, RN-Ds don't add anything over RN-Is, so smoosh them together */
2109                 if (dn->type == CMN_TYPE_RND)
2110                         dn->type = CMN_TYPE_RNI;
2111
2112                 /* We split the RN-I off already, so let the CCLA part match CCLA events */
2113                 if (dn->type == CMN_TYPE_CCLA_RNI)
2114                         dn->type = CMN_TYPE_CCLA;
2115         }
2116
2117         arm_cmn_set_state(cmn, CMN_STATE_DISABLED);
2118
2119         return 0;
2120 }
2121
2122 static unsigned int arm_cmn_dtc_domain(struct arm_cmn *cmn, void __iomem *xp_region)
2123 {
2124         int offset = CMN_DTM_UNIT_INFO;
2125
2126         if (cmn->part == PART_CMN650 || cmn->part == PART_CI700)
2127                 offset = CMN650_DTM_UNIT_INFO;
2128
2129         return FIELD_GET(CMN_DTM_UNIT_INFO_DTC_DOMAIN, readl_relaxed(xp_region + offset));
2130 }
2131
2132 static void arm_cmn_init_node_info(struct arm_cmn *cmn, u32 offset, struct arm_cmn_node *node)
2133 {
2134         int level;
2135         u64 reg = readq_relaxed(cmn->base + offset + CMN_NODE_INFO);
2136
2137         node->type = FIELD_GET(CMN_NI_NODE_TYPE, reg);
2138         node->id = FIELD_GET(CMN_NI_NODE_ID, reg);
2139         node->logid = FIELD_GET(CMN_NI_LOGICAL_ID, reg);
2140
2141         node->pmu_base = cmn->base + offset + CMN_PMU_OFFSET;
2142
2143         if (node->type == CMN_TYPE_CFG)
2144                 level = 0;
2145         else if (node->type == CMN_TYPE_XP)
2146                 level = 1;
2147         else
2148                 level = 2;
2149
2150         dev_dbg(cmn->dev, "node%*c%#06hx%*ctype:%-#6x id:%-4hd off:%#x\n",
2151                         (level * 2) + 1, ' ', node->id, 5 - (level * 2), ' ',
2152                         node->type, node->logid, offset);
2153 }
2154
2155 static enum cmn_node_type arm_cmn_subtype(enum cmn_node_type type)
2156 {
2157         switch (type) {
2158         case CMN_TYPE_HNP:
2159                 return CMN_TYPE_HNI;
2160         case CMN_TYPE_CCLA_RNI:
2161                 return CMN_TYPE_RNI;
2162         default:
2163                 return CMN_TYPE_INVALID;
2164         }
2165 }
2166
2167 static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
2168 {
2169         void __iomem *cfg_region;
2170         struct arm_cmn_node cfg, *dn;
2171         struct arm_cmn_dtm *dtm;
2172         enum cmn_part part;
2173         u16 child_count, child_poff;
2174         u32 xp_offset[CMN_MAX_XPS];
2175         u64 reg;
2176         int i, j;
2177         size_t sz;
2178
2179         arm_cmn_init_node_info(cmn, rgn_offset, &cfg);
2180         if (cfg.type != CMN_TYPE_CFG)
2181                 return -ENODEV;
2182
2183         cfg_region = cmn->base + rgn_offset;
2184
2185         reg = readq_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_01);
2186         part = FIELD_GET(CMN_CFGM_PID0_PART_0, reg);
2187         part |= FIELD_GET(CMN_CFGM_PID1_PART_1, reg) << 8;
2188         if (cmn->part && cmn->part != part)
2189                 dev_warn(cmn->dev,
2190                          "Firmware binding mismatch: expected part number 0x%x, found 0x%x\n",
2191                          cmn->part, part);
2192         cmn->part = part;
2193         if (!arm_cmn_model(cmn))
2194                 dev_warn(cmn->dev, "Unknown part number: 0x%x\n", part);
2195
2196         reg = readl_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_23);
2197         cmn->rev = FIELD_GET(CMN_CFGM_PID2_REVISION, reg);
2198
2199         reg = readq_relaxed(cfg_region + CMN_CFGM_INFO_GLOBAL);
2200         cmn->multi_dtm = reg & CMN_INFO_MULTIPLE_DTM_EN;
2201         cmn->rsp_vc_num = FIELD_GET(CMN_INFO_RSP_VC_NUM, reg);
2202         cmn->dat_vc_num = FIELD_GET(CMN_INFO_DAT_VC_NUM, reg);
2203
2204         reg = readq_relaxed(cfg_region + CMN_CFGM_INFO_GLOBAL_1);
2205         cmn->snp_vc_num = FIELD_GET(CMN_INFO_SNP_VC_NUM, reg);
2206         cmn->req_vc_num = FIELD_GET(CMN_INFO_REQ_VC_NUM, reg);
2207
2208         reg = readq_relaxed(cfg_region + CMN_CHILD_INFO);
2209         child_count = FIELD_GET(CMN_CI_CHILD_COUNT, reg);
2210         child_poff = FIELD_GET(CMN_CI_CHILD_PTR_OFFSET, reg);
2211
2212         cmn->num_xps = child_count;
2213         cmn->num_dns = cmn->num_xps;
2214
2215         /* Pass 1: visit the XPs, enumerate their children */
2216         for (i = 0; i < cmn->num_xps; i++) {
2217                 reg = readq_relaxed(cfg_region + child_poff + i * 8);
2218                 xp_offset[i] = reg & CMN_CHILD_NODE_ADDR;
2219
2220                 reg = readq_relaxed(cmn->base + xp_offset[i] + CMN_CHILD_INFO);
2221                 cmn->num_dns += FIELD_GET(CMN_CI_CHILD_COUNT, reg);
2222         }
2223
2224         /*
2225          * Some nodes effectively have two separate types, which we'll handle
2226          * by creating one of each internally. For a (very) safe initial upper
2227          * bound, account for double the number of non-XP nodes.
2228          */
2229         dn = devm_kcalloc(cmn->dev, cmn->num_dns * 2 - cmn->num_xps,
2230                           sizeof(*dn), GFP_KERNEL);
2231         if (!dn)
2232                 return -ENOMEM;
2233
2234         /* Initial safe upper bound on DTMs for any possible mesh layout */
2235         i = cmn->num_xps;
2236         if (cmn->multi_dtm)
2237                 i += cmn->num_xps + 1;
2238         dtm = devm_kcalloc(cmn->dev, i, sizeof(*dtm), GFP_KERNEL);
2239         if (!dtm)
2240                 return -ENOMEM;
2241
2242         /* Pass 2: now we can actually populate the nodes */
2243         cmn->dns = dn;
2244         cmn->dtms = dtm;
2245         for (i = 0; i < cmn->num_xps; i++) {
2246                 void __iomem *xp_region = cmn->base + xp_offset[i];
2247                 struct arm_cmn_node *xp = dn++;
2248                 unsigned int xp_ports = 0;
2249
2250                 arm_cmn_init_node_info(cmn, xp_offset[i], xp);
2251                 /*
2252                  * Thanks to the order in which XP logical IDs seem to be
2253                  * assigned, we can handily infer the mesh X dimension by
2254                  * looking out for the XP at (0,1) without needing to know
2255                  * the exact node ID format, which we can later derive.
2256                  */
2257                 if (xp->id == (1 << 3))
2258                         cmn->mesh_x = xp->logid;
2259
2260                 if (cmn->part == PART_CMN600)
2261                         xp->dtc = 0xf;
2262                 else
2263                         xp->dtc = 1 << arm_cmn_dtc_domain(cmn, xp_region);
2264
2265                 xp->dtm = dtm - cmn->dtms;
2266                 arm_cmn_init_dtm(dtm++, xp, 0);
2267                 /*
2268                  * Keeping track of connected ports will let us filter out
2269                  * unnecessary XP events easily. We can also reliably infer the
2270                  * "extra device ports" configuration for the node ID format
2271                  * from this, since in that case we will see at least one XP
2272                  * with port 2 connected, for the HN-D.
2273                  */
2274                 for (int p = 0; p < CMN_MAX_PORTS; p++)
2275                         if (arm_cmn_device_connect_info(cmn, xp, p))
2276                                 xp_ports |= BIT(p);
2277
2278                 if (cmn->multi_dtm && (xp_ports & 0xc))
2279                         arm_cmn_init_dtm(dtm++, xp, 1);
2280                 if (cmn->multi_dtm && (xp_ports & 0x30))
2281                         arm_cmn_init_dtm(dtm++, xp, 2);
2282
2283                 cmn->ports_used |= xp_ports;
2284
2285                 reg = readq_relaxed(xp_region + CMN_CHILD_INFO);
2286                 child_count = FIELD_GET(CMN_CI_CHILD_COUNT, reg);
2287                 child_poff = FIELD_GET(CMN_CI_CHILD_PTR_OFFSET, reg);
2288
2289                 for (j = 0; j < child_count; j++) {
2290                         reg = readq_relaxed(xp_region + child_poff + j * 8);
2291                         /*
2292                          * Don't even try to touch anything external, since in general
2293                          * we haven't a clue how to power up arbitrary CHI requesters.
2294                          * As of CMN-600r1 these could only be RN-SAMs or CXLAs,
2295                          * neither of which have any PMU events anyway.
2296                          * (Actually, CXLAs do seem to have grown some events in r1p2,
2297                          * but they don't go to regular XP DTMs, and they depend on
2298                          * secure configuration which we can't easily deal with)
2299                          */
2300                         if (reg & CMN_CHILD_NODE_EXTERNAL) {
2301                                 dev_dbg(cmn->dev, "ignoring external node %llx\n", reg);
2302                                 continue;
2303                         }
2304
2305                         arm_cmn_init_node_info(cmn, reg & CMN_CHILD_NODE_ADDR, dn);
2306
2307                         switch (dn->type) {
2308                         case CMN_TYPE_DTC:
2309                                 cmn->num_dtcs++;
2310                                 dn++;
2311                                 break;
2312                         /* These guys have PMU events */
2313                         case CMN_TYPE_DVM:
2314                         case CMN_TYPE_HNI:
2315                         case CMN_TYPE_HNF:
2316                         case CMN_TYPE_SBSX:
2317                         case CMN_TYPE_RNI:
2318                         case CMN_TYPE_RND:
2319                         case CMN_TYPE_MTSX:
2320                         case CMN_TYPE_CXRA:
2321                         case CMN_TYPE_CXHA:
2322                         case CMN_TYPE_CCRA:
2323                         case CMN_TYPE_CCHA:
2324                         case CMN_TYPE_CCLA:
2325                         case CMN_TYPE_HNS:
2326                                 dn++;
2327                                 break;
2328                         /* Nothing to see here */
2329                         case CMN_TYPE_MPAM_S:
2330                         case CMN_TYPE_MPAM_NS:
2331                         case CMN_TYPE_RNSAM:
2332                         case CMN_TYPE_CXLA:
2333                         case CMN_TYPE_HNS_MPAM_S:
2334                         case CMN_TYPE_HNS_MPAM_NS:
2335                                 break;
2336                         /*
2337                          * Split "optimised" combination nodes into separate
2338                          * types for the different event sets. Offsetting the
2339                          * base address lets us handle the second pmu_event_sel
2340                          * register via the normal mechanism later.
2341                          */
2342                         case CMN_TYPE_HNP:
2343                         case CMN_TYPE_CCLA_RNI:
2344                                 dn[1] = dn[0];
2345                                 dn[0].pmu_base += CMN_HNP_PMU_EVENT_SEL;
2346                                 dn[1].type = arm_cmn_subtype(dn->type);
2347                                 dn += 2;
2348                                 break;
2349                         /* Something has gone horribly wrong */
2350                         default:
2351                                 dev_err(cmn->dev, "invalid device node type: 0x%x\n", dn->type);
2352                                 return -ENODEV;
2353                         }
2354                 }
2355         }
2356
2357         /* Correct for any nodes we added or skipped */
2358         cmn->num_dns = dn - cmn->dns;
2359
2360         /* Cheeky +1 to help terminate pointer-based iteration later */
2361         sz = (void *)(dn + 1) - (void *)cmn->dns;
2362         dn = devm_krealloc(cmn->dev, cmn->dns, sz, GFP_KERNEL);
2363         if (dn)
2364                 cmn->dns = dn;
2365
2366         sz = (void *)dtm - (void *)cmn->dtms;
2367         dtm = devm_krealloc(cmn->dev, cmn->dtms, sz, GFP_KERNEL);
2368         if (dtm)
2369                 cmn->dtms = dtm;
2370
2371         /*
2372          * If mesh_x wasn't set during discovery then we never saw
2373          * an XP at (0,1), thus we must have an Nx1 configuration.
2374          */
2375         if (!cmn->mesh_x)
2376                 cmn->mesh_x = cmn->num_xps;
2377         cmn->mesh_y = cmn->num_xps / cmn->mesh_x;
2378
2379         /* 1x1 config plays havoc with XP event encodings */
2380         if (cmn->num_xps == 1)
2381                 dev_warn(cmn->dev, "1x1 config not fully supported, translate XP events manually\n");
2382
2383         dev_dbg(cmn->dev, "periph_id part 0x%03x revision %d\n", cmn->part, cmn->rev);
2384         reg = cmn->ports_used;
2385         dev_dbg(cmn->dev, "mesh %dx%d, ID width %d, ports %6pbl%s\n",
2386                 cmn->mesh_x, cmn->mesh_y, arm_cmn_xyidbits(cmn), &reg,
2387                 cmn->multi_dtm ? ", multi-DTM" : "");
2388
2389         return 0;
2390 }
2391
2392 static int arm_cmn600_acpi_probe(struct platform_device *pdev, struct arm_cmn *cmn)
2393 {
2394         struct resource *cfg, *root;
2395
2396         cfg = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2397         if (!cfg)
2398                 return -EINVAL;
2399
2400         root = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2401         if (!root)
2402                 return -EINVAL;
2403
2404         if (!resource_contains(cfg, root))
2405                 swap(cfg, root);
2406         /*
2407          * Note that devm_ioremap_resource() is dumb and won't let the platform
2408          * device claim cfg when the ACPI companion device has already claimed
2409          * root within it. But since they *are* already both claimed in the
2410          * appropriate name, we don't really need to do it again here anyway.
2411          */
2412         cmn->base = devm_ioremap(cmn->dev, cfg->start, resource_size(cfg));
2413         if (!cmn->base)
2414                 return -ENOMEM;
2415
2416         return root->start - cfg->start;
2417 }
2418
2419 static int arm_cmn600_of_probe(struct device_node *np)
2420 {
2421         u32 rootnode;
2422
2423         return of_property_read_u32(np, "arm,root-node", &rootnode) ?: rootnode;
2424 }
2425
2426 static int arm_cmn_probe(struct platform_device *pdev)
2427 {
2428         struct arm_cmn *cmn;
2429         const char *name;
2430         static atomic_t id;
2431         int err, rootnode, this_id;
2432
2433         cmn = devm_kzalloc(&pdev->dev, sizeof(*cmn), GFP_KERNEL);
2434         if (!cmn)
2435                 return -ENOMEM;
2436
2437         cmn->dev = &pdev->dev;
2438         cmn->part = (unsigned long)device_get_match_data(cmn->dev);
2439         platform_set_drvdata(pdev, cmn);
2440
2441         if (cmn->part == PART_CMN600 && has_acpi_companion(cmn->dev)) {
2442                 rootnode = arm_cmn600_acpi_probe(pdev, cmn);
2443         } else {
2444                 rootnode = 0;
2445                 cmn->base = devm_platform_ioremap_resource(pdev, 0);
2446                 if (IS_ERR(cmn->base))
2447                         return PTR_ERR(cmn->base);
2448                 if (cmn->part == PART_CMN600)
2449                         rootnode = arm_cmn600_of_probe(pdev->dev.of_node);
2450         }
2451         if (rootnode < 0)
2452                 return rootnode;
2453
2454         err = arm_cmn_discover(cmn, rootnode);
2455         if (err)
2456                 return err;
2457
2458         err = arm_cmn_init_dtcs(cmn);
2459         if (err)
2460                 return err;
2461
2462         err = arm_cmn_init_irqs(cmn);
2463         if (err)
2464                 return err;
2465
2466         cmn->cpu = cpumask_local_spread(0, dev_to_node(cmn->dev));
2467         cmn->pmu = (struct pmu) {
2468                 .module = THIS_MODULE,
2469                 .attr_groups = arm_cmn_attr_groups,
2470                 .capabilities = PERF_PMU_CAP_NO_EXCLUDE,
2471                 .task_ctx_nr = perf_invalid_context,
2472                 .pmu_enable = arm_cmn_pmu_enable,
2473                 .pmu_disable = arm_cmn_pmu_disable,
2474                 .event_init = arm_cmn_event_init,
2475                 .add = arm_cmn_event_add,
2476                 .del = arm_cmn_event_del,
2477                 .start = arm_cmn_event_start,
2478                 .stop = arm_cmn_event_stop,
2479                 .read = arm_cmn_event_read,
2480                 .start_txn = arm_cmn_start_txn,
2481                 .commit_txn = arm_cmn_commit_txn,
2482                 .cancel_txn = arm_cmn_end_txn,
2483         };
2484
2485         this_id = atomic_fetch_inc(&id);
2486         name = devm_kasprintf(cmn->dev, GFP_KERNEL, "arm_cmn_%d", this_id);
2487         if (!name)
2488                 return -ENOMEM;
2489
2490         err = cpuhp_state_add_instance(arm_cmn_hp_state, &cmn->cpuhp_node);
2491         if (err)
2492                 return err;
2493
2494         err = perf_pmu_register(&cmn->pmu, name, -1);
2495         if (err)
2496                 cpuhp_state_remove_instance_nocalls(arm_cmn_hp_state, &cmn->cpuhp_node);
2497         else
2498                 arm_cmn_debugfs_init(cmn, this_id);
2499
2500         return err;
2501 }
2502
2503 static int arm_cmn_remove(struct platform_device *pdev)
2504 {
2505         struct arm_cmn *cmn = platform_get_drvdata(pdev);
2506
2507         writel_relaxed(0, cmn->dtc[0].base + CMN_DT_DTC_CTL);
2508
2509         perf_pmu_unregister(&cmn->pmu);
2510         cpuhp_state_remove_instance_nocalls(arm_cmn_hp_state, &cmn->cpuhp_node);
2511         debugfs_remove(cmn->debug);
2512         return 0;
2513 }
2514
2515 #ifdef CONFIG_OF
2516 static const struct of_device_id arm_cmn_of_match[] = {
2517         { .compatible = "arm,cmn-600", .data = (void *)PART_CMN600 },
2518         { .compatible = "arm,cmn-650" },
2519         { .compatible = "arm,cmn-700" },
2520         { .compatible = "arm,ci-700" },
2521         {}
2522 };
2523 MODULE_DEVICE_TABLE(of, arm_cmn_of_match);
2524 #endif
2525
2526 #ifdef CONFIG_ACPI
2527 static const struct acpi_device_id arm_cmn_acpi_match[] = {
2528         { "ARMHC600", PART_CMN600 },
2529         { "ARMHC650" },
2530         { "ARMHC700" },
2531         {}
2532 };
2533 MODULE_DEVICE_TABLE(acpi, arm_cmn_acpi_match);
2534 #endif
2535
2536 static struct platform_driver arm_cmn_driver = {
2537         .driver = {
2538                 .name = "arm-cmn",
2539                 .of_match_table = of_match_ptr(arm_cmn_of_match),
2540                 .acpi_match_table = ACPI_PTR(arm_cmn_acpi_match),
2541         },
2542         .probe = arm_cmn_probe,
2543         .remove = arm_cmn_remove,
2544 };
2545
2546 static int __init arm_cmn_init(void)
2547 {
2548         int ret;
2549
2550         ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
2551                                       "perf/arm/cmn:online",
2552                                       arm_cmn_pmu_online_cpu,
2553                                       arm_cmn_pmu_offline_cpu);
2554         if (ret < 0)
2555                 return ret;
2556
2557         arm_cmn_hp_state = ret;
2558         arm_cmn_debugfs = debugfs_create_dir("arm-cmn", NULL);
2559
2560         ret = platform_driver_register(&arm_cmn_driver);
2561         if (ret) {
2562                 cpuhp_remove_multi_state(arm_cmn_hp_state);
2563                 debugfs_remove(arm_cmn_debugfs);
2564         }
2565         return ret;
2566 }
2567
2568 static void __exit arm_cmn_exit(void)
2569 {
2570         platform_driver_unregister(&arm_cmn_driver);
2571         cpuhp_remove_multi_state(arm_cmn_hp_state);
2572         debugfs_remove(arm_cmn_debugfs);
2573 }
2574
2575 module_init(arm_cmn_init);
2576 module_exit(arm_cmn_exit);
2577
2578 MODULE_AUTHOR("Robin Murphy <robin.murphy@arm.com>");
2579 MODULE_DESCRIPTION("Arm CMN-600 PMU driver");
2580 MODULE_LICENSE("GPL v2");