LXR linux/arch/ia64/kernel/perfmon

   1/*
   2 * This file contains the Montecito PMU register description tables
   3 * and pmc checker used by perfmon.c.
   4 *
   5 * Copyright (c) 2005-2006 Hewlett-Packard Development Company, L.P.
   6 *               Contributed by Stephane Eranian <eranian@hpl.hp.com>
   7 */
   8static int pfm_mont_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs);
   9
  10#define RDEP_MONT_ETB   (RDEP(38)|RDEP(39)|RDEP(48)|RDEP(49)|RDEP(50)|RDEP(51)|RDEP(52)|RDEP(53)|RDEP(54)|\
  11                         RDEP(55)|RDEP(56)|RDEP(57)|RDEP(58)|RDEP(59)|RDEP(60)|RDEP(61)|RDEP(62)|RDEP(63))
  12#define RDEP_MONT_DEAR  (RDEP(32)|RDEP(33)|RDEP(36))
  13#define RDEP_MONT_IEAR  (RDEP(34)|RDEP(35))
  14
  15static pfm_reg_desc_t pfm_mont_pmc_desc[PMU_MAX_PMCS]={
  16/* pmc0  */ { PFM_REG_CONTROL , 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {0,0, 0, 0}},
  17/* pmc1  */ { PFM_REG_CONTROL , 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {0,0, 0, 0}},
  18/* pmc2  */ { PFM_REG_CONTROL , 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {0,0, 0, 0}},
  19/* pmc3  */ { PFM_REG_CONTROL , 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {0,0, 0, 0}},
  20/* pmc4  */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(4),0, 0, 0}, {0,0, 0, 0}},
  21/* pmc5  */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(5),0, 0, 0}, {0,0, 0, 0}},
  22/* pmc6  */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(6),0, 0, 0}, {0,0, 0, 0}},
  23/* pmc7  */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(7),0, 0, 0}, {0,0, 0, 0}},
  24/* pmc8  */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(8),0, 0, 0}, {0,0, 0, 0}},
  25/* pmc9  */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(9),0, 0, 0}, {0,0, 0, 0}},
  26/* pmc10 */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(10),0, 0, 0}, {0,0, 0, 0}},
  27/* pmc11 */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(11),0, 0, 0}, {0,0, 0, 0}},
  28/* pmc12 */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(12),0, 0, 0}, {0,0, 0, 0}},
  29/* pmc13 */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(13),0, 0, 0}, {0,0, 0, 0}},
  30/* pmc14 */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(14),0, 0, 0}, {0,0, 0, 0}},
  31/* pmc15 */ { PFM_REG_COUNTING, 6, 0x2000000, 0x7c7fff7f, NULL, pfm_mont_pmc_check, {RDEP(15),0, 0, 0}, {0,0, 0, 0}},
  32/* pmc16 */ { PFM_REG_NOTIMPL, },
  33/* pmc17 */ { PFM_REG_NOTIMPL, },
  34/* pmc18 */ { PFM_REG_NOTIMPL, },
  35/* pmc19 */ { PFM_REG_NOTIMPL, },
  36/* pmc20 */ { PFM_REG_NOTIMPL, },
  37/* pmc21 */ { PFM_REG_NOTIMPL, },
  38/* pmc22 */ { PFM_REG_NOTIMPL, },
  39/* pmc23 */ { PFM_REG_NOTIMPL, },
  40/* pmc24 */ { PFM_REG_NOTIMPL, },
  41/* pmc25 */ { PFM_REG_NOTIMPL, },
  42/* pmc26 */ { PFM_REG_NOTIMPL, },
  43/* pmc27 */ { PFM_REG_NOTIMPL, },
  44/* pmc28 */ { PFM_REG_NOTIMPL, },
  45/* pmc29 */ { PFM_REG_NOTIMPL, },
  46/* pmc30 */ { PFM_REG_NOTIMPL, },
  47/* pmc31 */ { PFM_REG_NOTIMPL, },
  48/* pmc32 */ { PFM_REG_CONFIG,  0, 0x30f01ffffffffffUL, 0x30f01ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
  49/* pmc33 */ { PFM_REG_CONFIG,  0, 0x0,  0x1ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
  50/* pmc34 */ { PFM_REG_CONFIG,  0, 0xf01ffffffffffUL, 0xf01ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
  51/* pmc35 */ { PFM_REG_CONFIG,  0, 0x0,  0x1ffffffffffUL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
  52/* pmc36 */ { PFM_REG_CONFIG,  0, 0xfffffff0, 0xf, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
  53/* pmc37 */ { PFM_REG_MONITOR, 4, 0x0, 0x3fff, NULL, pfm_mont_pmc_check, {RDEP_MONT_IEAR, 0, 0, 0}, {0, 0, 0, 0}},
  54/* pmc38 */ { PFM_REG_CONFIG,  0, 0xdb6, 0x2492, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
  55/* pmc39 */ { PFM_REG_MONITOR, 6, 0x0, 0xffcf, NULL, pfm_mont_pmc_check, {RDEP_MONT_ETB,0, 0, 0}, {0,0, 0, 0}},
  56/* pmc40 */ { PFM_REG_MONITOR, 6, 0x2000000, 0xf01cf, NULL, pfm_mont_pmc_check, {RDEP_MONT_DEAR,0, 0, 0}, {0,0, 0, 0}},
  57/* pmc41 */ { PFM_REG_CONFIG,  0, 0x00002078fefefefeUL, 0x1e00018181818UL, NULL, pfm_mont_pmc_check, {0,0, 0, 0}, {0,0, 0, 0}},
  58/* pmc42 */ { PFM_REG_MONITOR, 6, 0x0, 0x7ff4f, NULL, pfm_mont_pmc_check, {RDEP_MONT_ETB,0, 0, 0}, {0,0, 0, 0}},
  59            { PFM_REG_END    , 0, 0x0, -1, NULL, NULL, {0,}, {0,}}, /* end marker */
  60};
  61
  62static pfm_reg_desc_t pfm_mont_pmd_desc[PMU_MAX_PMDS]={
  63/* pmd0  */ { PFM_REG_NOTIMPL, }, 
  64/* pmd1  */ { PFM_REG_NOTIMPL, },
  65/* pmd2  */ { PFM_REG_NOTIMPL, },
  66/* pmd3  */ { PFM_REG_NOTIMPL, },
  67/* pmd4  */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(4),0, 0, 0}},
  68/* pmd5  */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(5),0, 0, 0}},
  69/* pmd6  */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(6),0, 0, 0}},
  70/* pmd7  */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(7),0, 0, 0}},
  71/* pmd8  */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(8),0, 0, 0}}, 
  72/* pmd9  */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(9),0, 0, 0}},
  73/* pmd10 */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(10),0, 0, 0}},
  74/* pmd11 */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(11),0, 0, 0}},
  75/* pmd12 */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(12),0, 0, 0}},
  76/* pmd13 */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(13),0, 0, 0}},
  77/* pmd14 */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(14),0, 0, 0}},
  78/* pmd15 */ { PFM_REG_COUNTING, 0, 0x0, -1, NULL, NULL, {0,0, 0, 0}, {RDEP(15),0, 0, 0}},
  79/* pmd16 */ { PFM_REG_NOTIMPL, },
  80/* pmd17 */ { PFM_REG_NOTIMPL, },
  81/* pmd18 */ { PFM_REG_NOTIMPL, },
  82/* pmd19 */ { PFM_REG_NOTIMPL, },
  83/* pmd20 */ { PFM_REG_NOTIMPL, },
  84/* pmd21 */ { PFM_REG_NOTIMPL, },
  85/* pmd22 */ { PFM_REG_NOTIMPL, },
  86/* pmd23 */ { PFM_REG_NOTIMPL, },
  87/* pmd24 */ { PFM_REG_NOTIMPL, },
  88/* pmd25 */ { PFM_REG_NOTIMPL, },
  89/* pmd26 */ { PFM_REG_NOTIMPL, },
  90/* pmd27 */ { PFM_REG_NOTIMPL, },
  91/* pmd28 */ { PFM_REG_NOTIMPL, },
  92/* pmd29 */ { PFM_REG_NOTIMPL, },
  93/* pmd30 */ { PFM_REG_NOTIMPL, },
  94/* pmd31 */ { PFM_REG_NOTIMPL, },
  95/* pmd32 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP(33)|RDEP(36),0, 0, 0}, {RDEP(40),0, 0, 0}},
  96/* pmd33 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP(32)|RDEP(36),0, 0, 0}, {RDEP(40),0, 0, 0}},
  97/* pmd34 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP(35),0, 0, 0}, {RDEP(37),0, 0, 0}},
  98/* pmd35 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP(34),0, 0, 0}, {RDEP(37),0, 0, 0}},
  99/* pmd36 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP(32)|RDEP(33),0, 0, 0}, {RDEP(40),0, 0, 0}},
 100/* pmd37 */ { PFM_REG_NOTIMPL, },
 101/* pmd38 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 102/* pmd39 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 103/* pmd40 */ { PFM_REG_NOTIMPL, },
 104/* pmd41 */ { PFM_REG_NOTIMPL, },
 105/* pmd42 */ { PFM_REG_NOTIMPL, },
 106/* pmd43 */ { PFM_REG_NOTIMPL, },
 107/* pmd44 */ { PFM_REG_NOTIMPL, },
 108/* pmd45 */ { PFM_REG_NOTIMPL, },
 109/* pmd46 */ { PFM_REG_NOTIMPL, },
 110/* pmd47 */ { PFM_REG_NOTIMPL, },
 111/* pmd48 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 112/* pmd49 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 113/* pmd50 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 114/* pmd51 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 115/* pmd52 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 116/* pmd53 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 117/* pmd54 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 118/* pmd55 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 119/* pmd56 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 120/* pmd57 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 121/* pmd58 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 122/* pmd59 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 123/* pmd60 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 124/* pmd61 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 125/* pmd62 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 126/* pmd63 */ { PFM_REG_BUFFER, 0, 0x0, -1, NULL, NULL, {RDEP_MONT_ETB,0, 0, 0}, {RDEP(39),0, 0, 0}},
 127            { PFM_REG_END   , 0, 0x0, -1, NULL, NULL, {0,}, {0,}}, /* end marker */
 128};
 129
 130/*
 131 * PMC reserved fields must have their power-up values preserved
 132 */
 133static int
 134pfm_mont_reserved(unsigned int cnum, unsigned long *val, struct pt_regs *regs)
 135{
 136        unsigned long tmp1, tmp2, ival = *val;
 137
 138        /* remove reserved areas from user value */
 139        tmp1 = ival & PMC_RSVD_MASK(cnum);
 140
 141        /* get reserved fields values */
 142        tmp2 = PMC_DFL_VAL(cnum) & ~PMC_RSVD_MASK(cnum);
 143
 144        *val = tmp1 | tmp2;
 145
 146        DPRINT(("pmc[%d]=0x%lx, mask=0x%lx, reset=0x%lx, val=0x%lx\n",
 147                  cnum, ival, PMC_RSVD_MASK(cnum), PMC_DFL_VAL(cnum), *val));
 148        return 0;
 149}
 150
 151/*
 152 * task can be NULL if the context is unloaded
 153 */
 154static int
 155pfm_mont_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs)
 156{
 157        int ret = 0;
 158        unsigned long val32 = 0, val38 = 0, val41 = 0;
 159        unsigned long tmpval;
 160        int check_case1 = 0;
 161        int is_loaded;
 162
 163        /* first preserve the reserved fields */
 164        pfm_mont_reserved(cnum, val, regs);
 165
 166        tmpval = *val;
 167
 168        /* sanity check */
 169        if (ctx == NULL) return -EINVAL;
 170
 171        is_loaded = ctx->ctx_state == PFM_CTX_LOADED || ctx->ctx_state == PFM_CTX_MASKED;
 172
 173        /*
 174         * we must clear the debug registers if pmc41 has a value which enable
 175         * memory pipeline event constraints. In this case we need to clear the
 176         * the debug registers if they have not yet been accessed. This is required
 177         * to avoid picking stale state.
 178         * PMC41 is "active" if:
 179         *      one of the pmc41.cfg_dtagXX field is different from 0x3
 180         * AND
 181         *      at the corresponding pmc41.en_dbrpXX is set.
 182         * AND
 183         *      ctx_fl_using_dbreg == 0  (i.e., dbr not yet used)
 184         */
 185        DPRINT(("cnum=%u val=0x%lx, using_dbreg=%d loaded=%d\n", cnum, tmpval, ctx->ctx_fl_using_dbreg, is_loaded));
 186
 187        if (cnum == 41 && is_loaded 
 188            && (tmpval & 0x1e00000000000UL) && (tmpval & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) {
 189
 190                DPRINT(("pmc[%d]=0x%lx has active pmc41 settings, clearing dbr\n", cnum, tmpval));
 191
 192                /* don't mix debug with perfmon */
 193                if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
 194
 195                /*
 196                 * a count of 0 will mark the debug registers if:
 197                 * AND
 198                 */
 199                ret = pfm_write_ibr_dbr(PFM_DATA_RR, ctx, NULL, 0, regs);
 200                if (ret) return ret;
 201        }
 202        /*
 203         * we must clear the (instruction) debug registers if:
 204         *      pmc38.ig_ibrpX is 0 (enabled)
 205         * AND
 206         *      ctx_fl_using_dbreg == 0  (i.e., dbr not yet used)
 207         */
 208        if (cnum == 38 && is_loaded && ((tmpval & 0x492UL) != 0x492UL) && ctx->ctx_fl_using_dbreg == 0) {
 209
 210                DPRINT(("pmc38=0x%lx has active pmc38 settings, clearing ibr\n", tmpval));
 211
 212                /* don't mix debug with perfmon */
 213                if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
 214
 215                /*
 216                 * a count of 0 will mark the debug registers as in use and also
 217                 * ensure that they are properly cleared.
 218                 */
 219                ret = pfm_write_ibr_dbr(PFM_CODE_RR, ctx, NULL, 0, regs);
 220                if (ret) return ret;
 221
 222        }
 223        switch(cnum) {
 224                case  32: val32 = *val;
 225                          val38 = ctx->ctx_pmcs[38];
 226                          val41 = ctx->ctx_pmcs[41];
 227                          check_case1 = 1;
 228                          break;
 229                case  38: val38 = *val;
 230                          val32 = ctx->ctx_pmcs[32];
 231                          val41 = ctx->ctx_pmcs[41];
 232                          check_case1 = 1;
 233                          break;
 234                case  41: val41 = *val;
 235                          val32 = ctx->ctx_pmcs[32];
 236                          val38 = ctx->ctx_pmcs[38];
 237                          check_case1 = 1;
 238                          break;
 239        }
 240        /* check illegal configuration which can produce inconsistencies in tagging
 241         * i-side events in L1D and L2 caches
 242         */
 243        if (check_case1) {
 244                ret =   (((val41 >> 45) & 0xf) == 0 && ((val32>>57) & 0x1) == 0)
 245                     && ((((val38>>1) & 0x3) == 0x2 || ((val38>>1) & 0x3) == 0)
 246                     ||  (((val38>>4) & 0x3) == 0x2 || ((val38>>4) & 0x3) == 0));
 247                if (ret) {
 248                        DPRINT(("invalid config pmc38=0x%lx pmc41=0x%lx pmc32=0x%lx\n", val38, val41, val32));
 249                        return -EINVAL;
 250                }
 251        }
 252        *val = tmpval;
 253        return 0;
 254}
 255
 256/*
 257 * impl_pmcs, impl_pmds are computed at runtime to minimize errors!
 258 */
 259static pmu_config_t pmu_conf_mont={
 260        .pmu_name        = "Montecito",
 261        .pmu_family      = 0x20,
 262        .flags           = PFM_PMU_IRQ_RESEND,
 263        .ovfl_val        = (1UL << 47) - 1,
 264        .pmd_desc        = pfm_mont_pmd_desc,
 265        .pmc_desc        = pfm_mont_pmc_desc,
 266        .num_ibrs        = 8,
 267        .num_dbrs        = 8,
 268        .use_rr_dbregs   = 1 /* debug register are use for range retrictions */
 269};
 270