arch/ia64/kernel/perfmon_mckinley.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * This file contains the McKinley PMU register description tables
   4  * and pmc checker used by perfmon.c.
   5  *
   6  * Copyright (C) 2002-2003  Hewlett Packard Co
   7  *               Stephane Eranian <eranian@hpl.hp.com>
   8  */
   9 static int pfm_mck_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs);
  10
  11 static pfm_reg_desc_t pfm_mck_pmc_desc[PMU_MAX_PMCS]={
  12 /* pmc0  */ { PFM_REG_CONTROL , 0, 0x1UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  13 /* pmc1  */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  14 /* pmc2  */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  15 /* pmc3  */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  16 /* pmc4  */ { PFM_REG_COUNTING, 6, 0x0000000000800000UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(4),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  17 /* pmc5  */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL,  pfm_mck_pmc_check, {RDEP(5),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  18 /* pmc6  */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL,  pfm_mck_pmc_check, {RDEP(6),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  19 /* pmc7  */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL,  pfm_mck_pmc_check, {RDEP(7),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  20 /* pmc8  */ { PFM_REG_CONFIG  , 0, 0xffffffff3fffffffUL, 0xffffffff3ffffffbUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  21 /* pmc9  */ { PFM_REG_CONFIG  , 0, 0xffffffff3ffffffcUL, 0xffffffff3ffffffbUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  22 /* pmc10 */ { PFM_REG_MONITOR , 4, 0x0UL, 0xffffUL, NULL, pfm_mck_pmc_check, {RDEP(0)|RDEP(1),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  23 /* pmc11 */ { PFM_REG_MONITOR , 6, 0x0UL, 0x30f01cf, NULL,  pfm_mck_pmc_check, {RDEP(2)|RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  24 /* pmc12 */ { PFM_REG_MONITOR , 6, 0x0UL, 0xffffUL, NULL,  pfm_mck_pmc_check, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  25 /* pmc13 */ { PFM_REG_CONFIG  , 0, 0x00002078fefefefeUL, 0x1e00018181818UL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  26 /* pmc14 */ { PFM_REG_CONFIG  , 0, 0x0db60db60db60db6UL, 0x2492UL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  27 /* pmc15 */ { PFM_REG_CONFIG  , 0, 0x00000000fffffff0UL, 0xfUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
  28             { PFM_REG_END     , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */
  29 };
  30
  31 static pfm_reg_desc_t pfm_mck_pmd_desc[PMU_MAX_PMDS]={
  32 /* pmd0  */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(1),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
  33 /* pmd1  */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(0),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
  34 /* pmd2  */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
  35 /* pmd3  */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(2)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
  36 /* pmd4  */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(4),0UL, 0UL, 0UL}},
  37 /* pmd5  */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(5),0UL, 0UL, 0UL}},
  38 /* pmd6  */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(6),0UL, 0UL, 0UL}},
  39 /* pmd7  */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(7),0UL, 0UL, 0UL}},
  40 /* pmd8  */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  41 /* pmd9  */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  42 /* pmd10 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  43 /* pmd11 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  44 /* pmd12 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  45 /* pmd13 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  46 /* pmd14 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  47 /* pmd15 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  48 /* pmd16 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}},
  49 /* pmd17 */ { PFM_REG_BUFFER  , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(2)|RDEP(3),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
  50             { PFM_REG_END     , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */
  51 };
  52
  53 /*
  54  * PMC reserved fields must have their power-up values preserved
  55  */
  56 static int
  57 pfm_mck_reserved(unsigned int cnum, unsigned long *val, struct pt_regs *regs)
  58 {
  59         unsigned long tmp1, tmp2, ival = *val;
  60
  61         /* remove reserved areas from user value */
  62         tmp1 = ival & PMC_RSVD_MASK(cnum);
  63
  64         /* get reserved fields values */
  65         tmp2 = PMC_DFL_VAL(cnum) & ~PMC_RSVD_MASK(cnum);
  66
  67         *val = tmp1 | tmp2;
  68
  69         DPRINT(("pmc[%d]=0x%lx, mask=0x%lx, reset=0x%lx, val=0x%lx\n",
  70                   cnum, ival, PMC_RSVD_MASK(cnum), PMC_DFL_VAL(cnum), *val));
  71         return 0;
  72 }
  73
  74 /*
  75  * task can be NULL if the context is unloaded
  76  */
  77 static int
  78 pfm_mck_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs)
  79 {
  80         int ret = 0, check_case1 = 0;
  81         unsigned long val8 = 0, val14 = 0, val13 = 0;
  82         int is_loaded;
  83
  84         /* first preserve the reserved fields */
  85         pfm_mck_reserved(cnum, val, regs);
  86
  87         /* sanitfy check */
  88         if (ctx == NULL) return -EINVAL;
  89
  90         is_loaded = ctx->ctx_state == PFM_CTX_LOADED || ctx->ctx_state == PFM_CTX_MASKED;
  91
  92         /*
  93          * we must clear the debug registers if pmc13 has a value which enable
  94          * memory pipeline event constraints. In this case we need to clear the
  95          * the debug registers if they have not yet been accessed. This is required
  96          * to avoid picking stale state.
  97          * PMC13 is "active" if:
  98          *      one of the pmc13.cfg_dbrpXX field is different from 0x3
  99          * AND
 100          *      at the corresponding pmc13.ena_dbrpXX is set.
 101          */
 102         DPRINT(("cnum=%u val=0x%lx, using_dbreg=%d loaded=%d\n", cnum, *val, ctx->ctx_fl_using_dbreg, is_loaded));
 103
 104         if (cnum == 13 && is_loaded
 105             && (*val & 0x1e00000000000UL) && (*val & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) {
 106
 107                 DPRINT(("pmc[%d]=0x%lx has active pmc13 settings, clearing dbr\n", cnum, *val));
 108
 109                 /* don't mix debug with perfmon */
 110                 if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
 111
 112                 /*
 113                  * a count of 0 will mark the debug registers as in use and also
 114                  * ensure that they are properly cleared.
 115                  */
 116                 ret = pfm_write_ibr_dbr(PFM_DATA_RR, ctx, NULL, 0, regs);
 117                 if (ret) return ret;
 118         }
 119         /*
 120          * we must clear the (instruction) debug registers if any pmc14.ibrpX bit is enabled
 121          * before they are (fl_using_dbreg==0) to avoid picking up stale information.
 122          */
 123         if (cnum == 14 && is_loaded && ((*val & 0x2222UL) != 0x2222UL) && ctx->ctx_fl_using_dbreg == 0) {
 124
 125                 DPRINT(("pmc[%d]=0x%lx has active pmc14 settings, clearing ibr\n", cnum, *val));
 126
 127                 /* don't mix debug with perfmon */
 128                 if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
 129
 130                 /*
 131                  * a count of 0 will mark the debug registers as in use and also
 132                  * ensure that they are properly cleared.
 133                  */
 134                 ret = pfm_write_ibr_dbr(PFM_CODE_RR, ctx, NULL, 0, regs);
 135                 if (ret) return ret;
 136
 137         }
 138
 139         switch(cnum) {
 140                 case  4: *val |= 1UL << 23; /* force power enable bit */
 141                          break;
 142                 case  8: val8 = *val;
 143                          val13 = ctx->ctx_pmcs[13];
 144                          val14 = ctx->ctx_pmcs[14];
 145                          check_case1 = 1;
 146                          break;
 147                 case 13: val8  = ctx->ctx_pmcs[8];
 148                          val13 = *val;
 149                          val14 = ctx->ctx_pmcs[14];
 150                          check_case1 = 1;
 151                          break;
 152                 case 14: val8  = ctx->ctx_pmcs[8];
 153                          val13 = ctx->ctx_pmcs[13];
 154                          val14 = *val;
 155                          check_case1 = 1;
 156                          break;
 157         }
 158         /* check illegal configuration which can produce inconsistencies in tagging
 159          * i-side events in L1D and L2 caches
 160          */
 161         if (check_case1) {
 162                 ret =   ((val13 >> 45) & 0xf) == 0
 163                    && ((val8 & 0x1) == 0)
 164                    && ((((val14>>1) & 0x3) == 0x2 || ((val14>>1) & 0x3) == 0x0)
 165                        ||(((val14>>4) & 0x3) == 0x2 || ((val14>>4) & 0x3) == 0x0));
 166
 167                 if (ret) DPRINT((KERN_DEBUG "perfmon: failure check_case1\n"));
 168         }
 169
 170         return ret ? -EINVAL : 0;
 171 }
 172
 173 /*
 174  * impl_pmcs, impl_pmds are computed at runtime to minimize errors!
 175  */
 176 static pmu_config_t pmu_conf_mck={
 177         .pmu_name      = "Itanium 2",
 178         .pmu_family    = 0x1f,
 179         .flags         = PFM_PMU_IRQ_RESEND,
 180         .ovfl_val      = (1UL << 47) - 1,
 181         .pmd_desc      = pfm_mck_pmd_desc,
 182         .pmc_desc      = pfm_mck_pmc_desc,
 183         .num_ibrs       = 8,
 184         .num_dbrs       = 8,
 185         .use_rr_dbregs = 1 /* debug register are use for range restrictions */
 186 };
 187
 188