tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Arm Statistical Profiling Extensions (SPE) support
   4  * Copyright (c) 2017-2018, Arm Ltd.
   5  */
   6
   7 #ifndef INCLUDE__ARM_SPE_PKT_DECODER_H__
   8 #define INCLUDE__ARM_SPE_PKT_DECODER_H__
   9
  10 #include <stddef.h>
  11 #include <stdint.h>
  12
  13 #define ARM_SPE_PKT_DESC_MAX            256
  14
  15 #define ARM_SPE_NEED_MORE_BYTES         -1
  16 #define ARM_SPE_BAD_PACKET              -2
  17
  18 #define ARM_SPE_PKT_MAX_SZ              16
  19
  20 enum arm_spe_pkt_type {
  21         ARM_SPE_BAD,
  22         ARM_SPE_PAD,
  23         ARM_SPE_END,
  24         ARM_SPE_TIMESTAMP,
  25         ARM_SPE_ADDRESS,
  26         ARM_SPE_COUNTER,
  27         ARM_SPE_CONTEXT,
  28         ARM_SPE_OP_TYPE,
  29         ARM_SPE_EVENTS,
  30         ARM_SPE_DATA_SOURCE,
  31 };
  32
  33 struct arm_spe_pkt {
  34         enum arm_spe_pkt_type   type;
  35         unsigned char           index;
  36         uint64_t                payload;
  37 };
  38
  39 /* Short header (HEADER0) and extended header (HEADER1) */
  40 #define SPE_HEADER0_PAD                         0x0
  41 #define SPE_HEADER0_END                         0x1
  42 #define SPE_HEADER0_TIMESTAMP                   0x71
  43 /* Mask for event & data source */
  44 #define SPE_HEADER0_MASK1                       (GENMASK_ULL(7, 6) | GENMASK_ULL(3, 0))
  45 #define SPE_HEADER0_EVENTS                      0x42
  46 #define SPE_HEADER0_SOURCE                      0x43
  47 /* Mask for context & operation */
  48 #define SPE_HEADER0_MASK2                       GENMASK_ULL(7, 2)
  49 #define SPE_HEADER0_CONTEXT                     0x64
  50 #define SPE_HEADER0_OP_TYPE                     0x48
  51 /* Mask for extended format */
  52 #define SPE_HEADER0_EXTENDED                    0x20
  53 /* Mask for address & counter */
  54 #define SPE_HEADER0_MASK3                       GENMASK_ULL(7, 3)
  55 #define SPE_HEADER0_ADDRESS                     0xb0
  56 #define SPE_HEADER0_COUNTER                     0x98
  57 #define SPE_HEADER1_ALIGNMENT                   0x0
  58
  59 #define SPE_HDR_SHORT_INDEX(h)                  ((h) & GENMASK_ULL(2, 0))
  60 #define SPE_HDR_EXTENDED_INDEX(h0, h1)          (((h0) & GENMASK_ULL(1, 0)) << 3 | \
  61                                                  SPE_HDR_SHORT_INDEX(h1))
  62
  63 /* Address packet header */
  64 #define SPE_ADDR_PKT_HDR_INDEX_INS              0x0
  65 #define SPE_ADDR_PKT_HDR_INDEX_BRANCH           0x1
  66 #define SPE_ADDR_PKT_HDR_INDEX_DATA_VIRT        0x2
  67 #define SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS        0x3
  68
  69 /* Address packet payload */
  70 #define SPE_ADDR_PKT_ADDR_BYTE7_SHIFT           56
  71 #define SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(v)      ((v) & GENMASK_ULL(55, 0))
  72 #define SPE_ADDR_PKT_ADDR_GET_BYTE_6(v)         (((v) & GENMASK_ULL(55, 48)) >> 48)
  73
  74 #define SPE_ADDR_PKT_GET_NS(v)                  (((v) & BIT_ULL(63)) >> 63)
  75 #define SPE_ADDR_PKT_GET_EL(v)                  (((v) & GENMASK_ULL(62, 61)) >> 61)
  76 #define SPE_ADDR_PKT_GET_CH(v)                  (((v) & BIT_ULL(62)) >> 62)
  77 #define SPE_ADDR_PKT_GET_PAT(v)                 (((v) & GENMASK_ULL(59, 56)) >> 56)
  78
  79 #define SPE_ADDR_PKT_EL0                        0
  80 #define SPE_ADDR_PKT_EL1                        1
  81 #define SPE_ADDR_PKT_EL2                        2
  82 #define SPE_ADDR_PKT_EL3                        3
  83
  84 /* Context packet header */
  85 #define SPE_CTX_PKT_HDR_INDEX(h)                ((h) & GENMASK_ULL(1, 0))
  86
  87 /* Counter packet header */
  88 #define SPE_CNT_PKT_HDR_INDEX_TOTAL_LAT         0x0
  89 #define SPE_CNT_PKT_HDR_INDEX_ISSUE_LAT         0x1
  90 #define SPE_CNT_PKT_HDR_INDEX_TRANS_LAT         0x2
  91
  92 /* Event packet payload */
  93 enum arm_spe_events {
  94         EV_EXCEPTION_GEN        = 0,
  95         EV_RETIRED              = 1,
  96         EV_L1D_ACCESS           = 2,
  97         EV_L1D_REFILL           = 3,
  98         EV_TLB_ACCESS           = 4,
  99         EV_TLB_WALK             = 5,
 100         EV_NOT_TAKEN            = 6,
 101         EV_MISPRED              = 7,
 102         EV_LLC_ACCESS           = 8,
 103         EV_LLC_MISS             = 9,
 104         EV_REMOTE_ACCESS        = 10,
 105         EV_ALIGNMENT            = 11,
 106         EV_PARTIAL_PREDICATE    = 17,
 107         EV_EMPTY_PREDICATE      = 18,
 108 };
 109
 110 /* Operation packet header */
 111 #define SPE_OP_PKT_HDR_CLASS(h)                 ((h) & GENMASK_ULL(1, 0))
 112 #define SPE_OP_PKT_HDR_CLASS_OTHER              0x0
 113 #define SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC       0x1
 114 #define SPE_OP_PKT_HDR_CLASS_BR_ERET            0x2
 115
 116 #define SPE_OP_PKT_IS_OTHER_SVE_OP(v)           (((v) & (BIT(7) | BIT(3) | BIT(0))) == 0x8)
 117
 118 #define SPE_OP_PKT_COND                         BIT(0)
 119
 120 #define SPE_OP_PKT_LDST_SUBCLASS_GET(v)         ((v) & GENMASK_ULL(7, 1))
 121 #define SPE_OP_PKT_LDST_SUBCLASS_GP_REG         0x0
 122 #define SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP        0x4
 123 #define SPE_OP_PKT_LDST_SUBCLASS_UNSPEC_REG     0x10
 124 #define SPE_OP_PKT_LDST_SUBCLASS_NV_SYSREG      0x30
 125
 126 #define SPE_OP_PKT_IS_LDST_ATOMIC(v)            (((v) & (GENMASK_ULL(7, 5) | BIT(1))) == 0x2)
 127
 128 #define SPE_OP_PKT_AR                           BIT(4)
 129 #define SPE_OP_PKT_EXCL                         BIT(3)
 130 #define SPE_OP_PKT_AT                           BIT(2)
 131 #define SPE_OP_PKT_ST                           BIT(0)
 132
 133 #define SPE_OP_PKT_IS_LDST_SVE(v)               (((v) & (BIT(3) | BIT(1))) == 0x8)
 134
 135 #define SPE_OP_PKT_SVE_SG                       BIT(7)
 136 /*
 137  * SVE effective vector length (EVL) is stored in byte 0 bits [6:4];
 138  * the length is rounded up to a power of two and use 32 as one step,
 139  * so EVL calculation is:
 140  *
 141  *   32 * (2 ^ bits [6:4]) = 32 << (bits [6:4])
 142  */
 143 #define SPE_OP_PKG_SVE_EVL(v)                   (32 << (((v) & GENMASK_ULL(6, 4)) >> 4))
 144 #define SPE_OP_PKT_SVE_PRED                     BIT(2)
 145 #define SPE_OP_PKT_SVE_FP                       BIT(1)
 146
 147 #define SPE_OP_PKT_IS_INDIRECT_BRANCH(v)        (((v) & GENMASK_ULL(7, 1)) == 0x2)
 148
 149 const char *arm_spe_pkt_name(enum arm_spe_pkt_type);
 150
 151 int arm_spe_get_packet(const unsigned char *buf, size_t len,
 152                        struct arm_spe_pkt *packet);
 153
 154 int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf, size_t len);
 155 #endif