189 lines
9.3 KiB
C
189 lines
9.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* This file contains the McKinley PMU register description tables
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* and pmc checker used by perfmon.c.
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*
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* Copyright (C) 2002-2003 Hewlett Packard Co
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* Stephane Eranian <eranian@hpl.hp.com>
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*/
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static int pfm_mck_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs);
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static pfm_reg_desc_t pfm_mck_pmc_desc[PMU_MAX_PMCS]={
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/* pmc0 */ { PFM_REG_CONTROL , 0, 0x1UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc1 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc2 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc3 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc4 */ { PFM_REG_COUNTING, 6, 0x0000000000800000UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(4),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc5 */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(5),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc6 */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(6),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc7 */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(7),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc8 */ { PFM_REG_CONFIG , 0, 0xffffffff3fffffffUL, 0xffffffff3ffffffbUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc9 */ { PFM_REG_CONFIG , 0, 0xffffffff3ffffffcUL, 0xffffffff3ffffffbUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc10 */ { PFM_REG_MONITOR , 4, 0x0UL, 0xffffUL, NULL, pfm_mck_pmc_check, {RDEP(0)|RDEP(1),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* 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}},
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/* 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}},
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/* pmc13 */ { PFM_REG_CONFIG , 0, 0x00002078fefefefeUL, 0x1e00018181818UL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc14 */ { PFM_REG_CONFIG , 0, 0x0db60db60db60db6UL, 0x2492UL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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/* pmc15 */ { PFM_REG_CONFIG , 0, 0x00000000fffffff0UL, 0xfUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}},
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{ PFM_REG_END , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */
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};
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static pfm_reg_desc_t pfm_mck_pmd_desc[PMU_MAX_PMDS]={
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/* pmd0 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(1),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
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/* pmd1 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(0),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}},
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/* pmd2 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
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/* pmd3 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(2)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
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/* pmd4 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(4),0UL, 0UL, 0UL}},
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/* pmd5 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(5),0UL, 0UL, 0UL}},
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/* pmd6 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(6),0UL, 0UL, 0UL}},
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/* pmd7 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(7),0UL, 0UL, 0UL}},
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/* 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}},
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/* 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}},
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/* 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}},
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/* 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}},
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/* 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}},
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/* 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}},
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/* 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}},
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/* 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}},
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/* 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}},
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/* pmd17 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(2)|RDEP(3),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}},
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{ PFM_REG_END , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */
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};
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/*
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* PMC reserved fields must have their power-up values preserved
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*/
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static int
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pfm_mck_reserved(unsigned int cnum, unsigned long *val, struct pt_regs *regs)
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{
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unsigned long tmp1, tmp2, ival = *val;
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/* remove reserved areas from user value */
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tmp1 = ival & PMC_RSVD_MASK(cnum);
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/* get reserved fields values */
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tmp2 = PMC_DFL_VAL(cnum) & ~PMC_RSVD_MASK(cnum);
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*val = tmp1 | tmp2;
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DPRINT(("pmc[%d]=0x%lx, mask=0x%lx, reset=0x%lx, val=0x%lx\n",
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cnum, ival, PMC_RSVD_MASK(cnum), PMC_DFL_VAL(cnum), *val));
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return 0;
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}
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/*
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* task can be NULL if the context is unloaded
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*/
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static int
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pfm_mck_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs)
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{
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int ret = 0, check_case1 = 0;
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unsigned long val8 = 0, val14 = 0, val13 = 0;
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int is_loaded;
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/* first preserve the reserved fields */
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pfm_mck_reserved(cnum, val, regs);
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/* sanitfy check */
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if (ctx == NULL) return -EINVAL;
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is_loaded = ctx->ctx_state == PFM_CTX_LOADED || ctx->ctx_state == PFM_CTX_MASKED;
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/*
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* we must clear the debug registers if pmc13 has a value which enable
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* memory pipeline event constraints. In this case we need to clear the
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* the debug registers if they have not yet been accessed. This is required
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* to avoid picking stale state.
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* PMC13 is "active" if:
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* one of the pmc13.cfg_dbrpXX field is different from 0x3
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* AND
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* at the corresponding pmc13.ena_dbrpXX is set.
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*/
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DPRINT(("cnum=%u val=0x%lx, using_dbreg=%d loaded=%d\n", cnum, *val, ctx->ctx_fl_using_dbreg, is_loaded));
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if (cnum == 13 && is_loaded
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&& (*val & 0x1e00000000000UL) && (*val & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) {
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DPRINT(("pmc[%d]=0x%lx has active pmc13 settings, clearing dbr\n", cnum, *val));
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/* don't mix debug with perfmon */
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if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
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/*
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* a count of 0 will mark the debug registers as in use and also
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* ensure that they are properly cleared.
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*/
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ret = pfm_write_ibr_dbr(PFM_DATA_RR, ctx, NULL, 0, regs);
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if (ret) return ret;
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}
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/*
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* we must clear the (instruction) debug registers if any pmc14.ibrpX bit is enabled
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* before they are (fl_using_dbreg==0) to avoid picking up stale information.
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*/
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if (cnum == 14 && is_loaded && ((*val & 0x2222UL) != 0x2222UL) && ctx->ctx_fl_using_dbreg == 0) {
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DPRINT(("pmc[%d]=0x%lx has active pmc14 settings, clearing ibr\n", cnum, *val));
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/* don't mix debug with perfmon */
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if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL;
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/*
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* a count of 0 will mark the debug registers as in use and also
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* ensure that they are properly cleared.
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*/
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ret = pfm_write_ibr_dbr(PFM_CODE_RR, ctx, NULL, 0, regs);
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if (ret) return ret;
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}
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switch(cnum) {
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case 4: *val |= 1UL << 23; /* force power enable bit */
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break;
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case 8: val8 = *val;
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val13 = ctx->ctx_pmcs[13];
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val14 = ctx->ctx_pmcs[14];
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check_case1 = 1;
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break;
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case 13: val8 = ctx->ctx_pmcs[8];
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val13 = *val;
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val14 = ctx->ctx_pmcs[14];
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check_case1 = 1;
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break;
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case 14: val8 = ctx->ctx_pmcs[8];
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val13 = ctx->ctx_pmcs[13];
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val14 = *val;
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check_case1 = 1;
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break;
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}
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/* check illegal configuration which can produce inconsistencies in tagging
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* i-side events in L1D and L2 caches
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*/
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if (check_case1) {
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ret = ((val13 >> 45) & 0xf) == 0
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&& ((val8 & 0x1) == 0)
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&& ((((val14>>1) & 0x3) == 0x2 || ((val14>>1) & 0x3) == 0x0)
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||(((val14>>4) & 0x3) == 0x2 || ((val14>>4) & 0x3) == 0x0));
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if (ret) DPRINT((KERN_DEBUG "perfmon: failure check_case1\n"));
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}
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return ret ? -EINVAL : 0;
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}
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/*
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* impl_pmcs, impl_pmds are computed at runtime to minimize errors!
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*/
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static pmu_config_t pmu_conf_mck={
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.pmu_name = "Itanium 2",
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.pmu_family = 0x1f,
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.flags = PFM_PMU_IRQ_RESEND,
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.ovfl_val = (1UL << 47) - 1,
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.pmd_desc = pfm_mck_pmd_desc,
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.pmc_desc = pfm_mck_pmc_desc,
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.num_ibrs = 8,
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.num_dbrs = 8,
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.use_rr_dbregs = 1 /* debug register are use for range restrictions */
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};
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