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freebsd/sys/dev/hwpmc/hwpmc_e500.c

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/*-
* Copyright (c) 2015 Justin Hibbits
* Copyright (c) 2005, Joseph Koshy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/pmc.h>
#include <sys/pmckern.h>
#include <sys/systm.h>
#include <machine/pmc_mdep.h>
#include <machine/cpu.h>
#include <ddb/ddb.h>
#include "hwpmc_powerpc.h"
#define POWERPC_PMC_CAPS (PMC_CAP_INTERRUPT | PMC_CAP_USER | \
PMC_CAP_SYSTEM | PMC_CAP_EDGE | \
PMC_CAP_THRESHOLD | PMC_CAP_READ | \
PMC_CAP_WRITE | PMC_CAP_INVERT | \
PMC_CAP_QUALIFIER)
#define E500_PMC_HAS_OVERFLOWED(x) (e500_pmcn_read(x) & (0x1 << 31))
struct e500_event_code_map {
enum pmc_event pe_ev; /* enum value */
uint8_t pe_counter_mask; /* Which counter this can be counted in. */
uint8_t pe_code; /* numeric code */
uint8_t pe_cpu; /* e500 core (v1,v2,mc), mask */
};
#define E500_MAX_PMCS 4
#define PMC_PPC_MASK0 0
#define PMC_PPC_MASK1 1
#define PMC_PPC_MASK2 2
#define PMC_PPC_MASK3 3
#define PMC_PPC_MASK_ALL 0x0f
#define PMC_PPC_E500V1 1
#define PMC_PPC_E500V2 2
#define PMC_PPC_E500MC 4
#define PMC_PPC_E500_ANY 7
#define PMC_E500_EVENT(id, mask, number, core) \
[PMC_EV_E500_##id - PMC_EV_E500_FIRST] = \
{ .pe_ev = PMC_EV_E500_##id, .pe_counter_mask = mask, \
.pe_code = number, .pe_cpu = core }
#define PMC_E500MC_ONLY(id, number) \
PMC_E500_EVENT(id, PMC_PPC_MASK_ALL, number, PMC_PPC_E500MC)
#define PMC_E500_COMMON(id, number) \
PMC_E500_EVENT(id, PMC_PPC_MASK_ALL, number, PMC_PPC_E500_ANY)
static struct e500_event_code_map e500_event_codes[] = {
PMC_E500_COMMON(CYCLES, 1),
PMC_E500_COMMON(INSTR_COMPLETED, 2),
PMC_E500_COMMON(UOPS_COMPLETED, 3),
PMC_E500_COMMON(INSTR_FETCHED, 4),
PMC_E500_COMMON(UOPS_DECODED, 5),
PMC_E500_COMMON(PM_EVENT_TRANSITIONS, 6),
PMC_E500_COMMON(PM_EVENT_CYCLES, 7),
PMC_E500_COMMON(BRANCH_INSTRS_COMPLETED, 8),
PMC_E500_COMMON(LOAD_UOPS_COMPLETED, 9),
PMC_E500_COMMON(STORE_UOPS_COMPLETED, 10),
PMC_E500_COMMON(CQ_REDIRECTS, 11),
PMC_E500_COMMON(BRANCHES_FINISHED, 12),
PMC_E500_COMMON(TAKEN_BRANCHES_FINISHED, 13),
PMC_E500_COMMON(FINISHED_UNCOND_BRANCHES_MISS_BTB, 14),
PMC_E500_COMMON(BRANCH_MISPRED, 15),
PMC_E500_COMMON(BTB_BRANCH_MISPRED_FROM_DIRECTION, 16),
PMC_E500_COMMON(BTB_HITS_PSEUDO_HITS, 17),
PMC_E500_COMMON(CYCLES_DECODE_STALLED, 18),
PMC_E500_COMMON(CYCLES_ISSUE_STALLED, 19),
PMC_E500_COMMON(CYCLES_BRANCH_ISSUE_STALLED, 20),
PMC_E500_COMMON(CYCLES_SU1_SCHED_STALLED, 21),
PMC_E500_COMMON(CYCLES_SU2_SCHED_STALLED, 22),
PMC_E500_COMMON(CYCLES_MU_SCHED_STALLED, 23),
PMC_E500_COMMON(CYCLES_LRU_SCHED_STALLED, 24),
PMC_E500_COMMON(CYCLES_BU_SCHED_STALLED, 25),
PMC_E500_COMMON(TOTAL_TRANSLATED, 26),
PMC_E500_COMMON(LOADS_TRANSLATED, 27),
PMC_E500_COMMON(STORES_TRANSLATED, 28),
PMC_E500_COMMON(TOUCHES_TRANSLATED, 29),
PMC_E500_COMMON(CACHEOPS_TRANSLATED, 30),
PMC_E500_COMMON(CACHE_INHIBITED_ACCESS_TRANSLATED, 31),
PMC_E500_COMMON(GUARDED_LOADS_TRANSLATED, 32),
PMC_E500_COMMON(WRITE_THROUGH_STORES_TRANSLATED, 33),
PMC_E500_COMMON(MISALIGNED_LOAD_STORE_ACCESS_TRANSLATED, 34),
PMC_E500_COMMON(TOTAL_ALLOCATED_TO_DLFB, 35),
PMC_E500_COMMON(LOADS_TRANSLATED_ALLOCATED_TO_DLFB, 36),
PMC_E500_COMMON(STORES_COMPLETED_ALLOCATED_TO_DLFB, 37),
PMC_E500_COMMON(TOUCHES_TRANSLATED_ALLOCATED_TO_DLFB, 38),
PMC_E500_COMMON(STORES_COMPLETED, 39),
PMC_E500_COMMON(DATA_L1_CACHE_LOCKS, 40),
PMC_E500_COMMON(DATA_L1_CACHE_RELOADS, 41),
PMC_E500_COMMON(DATA_L1_CACHE_CASTOUTS, 42),
PMC_E500_COMMON(LOAD_MISS_DLFB_FULL, 43),
PMC_E500_COMMON(LOAD_MISS_LDQ_FULL, 44),
PMC_E500_COMMON(LOAD_GUARDED_MISS, 45),
PMC_E500_COMMON(STORE_TRANSLATE_WHEN_QUEUE_FULL, 46),
PMC_E500_COMMON(ADDRESS_COLLISION, 47),
PMC_E500_COMMON(DATA_MMU_MISS, 48),
PMC_E500_COMMON(DATA_MMU_BUSY, 49),
PMC_E500_COMMON(PART2_MISALIGNED_CACHE_ACCESS, 50),
PMC_E500_COMMON(LOAD_MISS_DLFB_FULL_CYCLES, 51),
PMC_E500_COMMON(LOAD_MISS_LDQ_FULL_CYCLES, 52),
PMC_E500_COMMON(LOAD_GUARDED_MISS_CYCLES, 53),
PMC_E500_COMMON(STORE_TRANSLATE_WHEN_QUEUE_FULL_CYCLES, 54),
PMC_E500_COMMON(ADDRESS_COLLISION_CYCLES, 55),
PMC_E500_COMMON(DATA_MMU_MISS_CYCLES, 56),
PMC_E500_COMMON(DATA_MMU_BUSY_CYCLES, 57),
PMC_E500_COMMON(PART2_MISALIGNED_CACHE_ACCESS_CYCLES, 58),
PMC_E500_COMMON(INSTR_L1_CACHE_LOCKS, 59),
PMC_E500_COMMON(INSTR_L1_CACHE_RELOADS, 60),
PMC_E500_COMMON(INSTR_L1_CACHE_FETCHES, 61),
PMC_E500_COMMON(INSTR_MMU_TLB4K_RELOADS, 62),
PMC_E500_COMMON(INSTR_MMU_VSP_RELOADS, 63),
PMC_E500_COMMON(DATA_MMU_TLB4K_RELOADS, 64),
PMC_E500_COMMON(DATA_MMU_VSP_RELOADS, 65),
PMC_E500_COMMON(L2MMU_MISSES, 66),
PMC_E500_COMMON(BIU_MASTER_REQUESTS, 67),
PMC_E500_COMMON(BIU_MASTER_INSTR_SIDE_REQUESTS, 68),
PMC_E500_COMMON(BIU_MASTER_DATA_SIDE_REQUESTS, 69),
PMC_E500_COMMON(BIU_MASTER_DATA_SIDE_CASTOUT_REQUESTS, 70),
PMC_E500_COMMON(BIU_MASTER_RETRIES, 71),
PMC_E500_COMMON(SNOOP_REQUESTS, 72),
PMC_E500_COMMON(SNOOP_HITS, 73),
PMC_E500_COMMON(SNOOP_PUSHES, 74),
PMC_E500_COMMON(SNOOP_RETRIES, 75),
PMC_E500_EVENT(DLFB_LOAD_MISS_CYCLES, PMC_PPC_MASK0|PMC_PPC_MASK1,
76, PMC_PPC_E500_ANY),
PMC_E500_EVENT(ILFB_FETCH_MISS_CYCLES, PMC_PPC_MASK0|PMC_PPC_MASK1,
77, PMC_PPC_E500_ANY),
PMC_E500_EVENT(EXT_INPU_INTR_LATENCY_CYCLES, PMC_PPC_MASK0|PMC_PPC_MASK1,
78, PMC_PPC_E500_ANY),
PMC_E500_EVENT(CRIT_INPUT_INTR_LATENCY_CYCLES, PMC_PPC_MASK0|PMC_PPC_MASK1,
79, PMC_PPC_E500_ANY),
PMC_E500_EVENT(EXT_INPUT_INTR_PENDING_LATENCY_CYCLES,
PMC_PPC_MASK0|PMC_PPC_MASK1, 80, PMC_PPC_E500_ANY),
PMC_E500_EVENT(CRIT_INPUT_INTR_PENDING_LATENCY_CYCLES,
PMC_PPC_MASK0|PMC_PPC_MASK1, 81, PMC_PPC_E500_ANY),
PMC_E500_COMMON(PMC0_OVERFLOW, 82),
PMC_E500_COMMON(PMC1_OVERFLOW, 83),
PMC_E500_COMMON(PMC2_OVERFLOW, 84),
PMC_E500_COMMON(PMC3_OVERFLOW, 85),
PMC_E500_COMMON(INTERRUPTS_TAKEN, 86),
PMC_E500_COMMON(EXT_INPUT_INTR_TAKEN, 87),
PMC_E500_COMMON(CRIT_INPUT_INTR_TAKEN, 88),
PMC_E500_COMMON(SYSCALL_TRAP_INTR, 89),
PMC_E500_EVENT(TLB_BIT_TRANSITIONS, PMC_PPC_MASK_ALL, 90,
PMC_PPC_E500V2 | PMC_PPC_E500MC),
PMC_E500MC_ONLY(L2_LINEFILL_BUFFER, 91),
PMC_E500MC_ONLY(LV2_VS, 92),
PMC_E500MC_ONLY(CASTOUTS_RELEASED, 93),
PMC_E500MC_ONLY(INTV_ALLOCATIONS, 94),
PMC_E500MC_ONLY(DLFB_RETRIES_TO_MBAR, 95),
PMC_E500MC_ONLY(STORE_RETRIES, 96),
PMC_E500MC_ONLY(STASH_L1_HITS, 97),
PMC_E500MC_ONLY(STASH_L2_HITS, 98),
PMC_E500MC_ONLY(STASH_BUSY_1, 99),
PMC_E500MC_ONLY(STASH_BUSY_2, 100),
PMC_E500MC_ONLY(STASH_BUSY_3, 101),
PMC_E500MC_ONLY(STASH_HITS, 102),
PMC_E500MC_ONLY(STASH_HIT_DLFB, 103),
PMC_E500MC_ONLY(STASH_REQUESTS, 106),
PMC_E500MC_ONLY(STASH_REQUESTS_L1, 107),
PMC_E500MC_ONLY(STASH_REQUESTS_L2, 108),
PMC_E500MC_ONLY(STALLS_NO_CAQ_OR_COB, 109),
PMC_E500MC_ONLY(L2_CACHE_ACCESSES, 110),
PMC_E500MC_ONLY(L2_HIT_CACHE_ACCESSES, 111),
PMC_E500MC_ONLY(L2_CACHE_DATA_ACCESSES, 112),
PMC_E500MC_ONLY(L2_CACHE_DATA_HITS, 113),
PMC_E500MC_ONLY(L2_CACHE_INSTR_ACCESSES, 114),
PMC_E500MC_ONLY(L2_CACHE_INSTR_HITS, 115),
PMC_E500MC_ONLY(L2_CACHE_ALLOCATIONS, 116),
PMC_E500MC_ONLY(L2_CACHE_DATA_ALLOCATIONS, 117),
PMC_E500MC_ONLY(L2_CACHE_DIRTY_DATA_ALLOCATIONS, 118),
PMC_E500MC_ONLY(L2_CACHE_INSTR_ALLOCATIONS, 119),
PMC_E500MC_ONLY(L2_CACHE_UPDATES, 120),
PMC_E500MC_ONLY(L2_CACHE_CLEAN_UPDATES, 121),
PMC_E500MC_ONLY(L2_CACHE_DIRTY_UPDATES, 122),
PMC_E500MC_ONLY(L2_CACHE_CLEAN_REDUNDANT_UPDATES, 123),
PMC_E500MC_ONLY(L2_CACHE_DIRTY_REDUNDANT_UPDATES, 124),
PMC_E500MC_ONLY(L2_CACHE_LOCKS, 125),
PMC_E500MC_ONLY(L2_CACHE_CASTOUTS, 126),
PMC_E500MC_ONLY(L2_CACHE_DATA_DIRTY_HITS, 127),
PMC_E500MC_ONLY(INSTR_LFB_WENT_HIGH_PRIORITY, 128),
PMC_E500MC_ONLY(SNOOP_THROTTLING_TURNED_ON, 129),
PMC_E500MC_ONLY(L2_CLEAN_LINE_INVALIDATIONS, 130),
PMC_E500MC_ONLY(L2_INCOHERENT_LINE_INVALIDATIONS, 131),
PMC_E500MC_ONLY(L2_COHERENT_LINE_INVALIDATIONS, 132),
PMC_E500MC_ONLY(COHERENT_LOOKUP_MISS_DUE_TO_VALID_BUT_INCOHERENT_MATCHES, 133),
PMC_E500MC_ONLY(IAC1S_DETECTED, 140),
PMC_E500MC_ONLY(IAC2S_DETECTED, 141),
PMC_E500MC_ONLY(DAC1S_DTECTED, 144),
PMC_E500MC_ONLY(DAC2S_DTECTED, 145),
PMC_E500MC_ONLY(DVT0_DETECTED, 148),
PMC_E500MC_ONLY(DVT1_DETECTED, 149),
PMC_E500MC_ONLY(DVT2_DETECTED, 150),
PMC_E500MC_ONLY(DVT3_DETECTED, 151),
PMC_E500MC_ONLY(DVT4_DETECTED, 152),
PMC_E500MC_ONLY(DVT5_DETECTED, 153),
PMC_E500MC_ONLY(DVT6_DETECTED, 154),
PMC_E500MC_ONLY(DVT7_DETECTED, 155),
PMC_E500MC_ONLY(CYCLES_COMPLETION_STALLED_NEXUS_FIFO_FULL, 156),
PMC_E500MC_ONLY(FPU_DOUBLE_PUMP, 160),
PMC_E500MC_ONLY(FPU_FINISH, 161),
PMC_E500MC_ONLY(FPU_DIVIDE_CYCLES, 162),
PMC_E500MC_ONLY(FPU_DENORM_INPUT_CYCLES, 163),
PMC_E500MC_ONLY(FPU_RESULT_STALL_CYCLES, 164),
PMC_E500MC_ONLY(FPU_FPSCR_FULL_STALL, 165),
PMC_E500MC_ONLY(FPU_PIPE_SYNC_STALLS, 166),
PMC_E500MC_ONLY(FPU_INPUT_DATA_STALLS, 167),
PMC_E500MC_ONLY(DECORATED_LOADS, 176),
PMC_E500MC_ONLY(DECORATED_STORES, 177),
PMC_E500MC_ONLY(LOAD_RETRIES, 178),
PMC_E500MC_ONLY(STWCX_SUCCESSES, 179),
PMC_E500MC_ONLY(STWCX_FAILURES, 180),
};
const size_t e500_event_codes_size =
sizeof(e500_event_codes) / sizeof(e500_event_codes[0]);
static pmc_value_t
e500_pmcn_read(unsigned int pmc)
{
switch (pmc) {
case 0:
return mfpmr(PMR_PMC0);
break;
case 1:
return mfpmr(PMR_PMC1);
break;
case 2:
return mfpmr(PMR_PMC2);
break;
case 3:
return mfpmr(PMR_PMC3);
break;
default:
panic("Invalid PMC number: %d\n", pmc);
}
}
static void
e500_pmcn_write(unsigned int pmc, uint32_t val)
{
switch (pmc) {
case 0:
mtpmr(PMR_PMC0, val);
break;
case 1:
mtpmr(PMR_PMC1, val);
break;
case 2:
mtpmr(PMR_PMC2, val);
break;
case 3:
mtpmr(PMR_PMC3, val);
break;
default:
panic("Invalid PMC number: %d\n", pmc);
}
}
static int
e500_read_pmc(int cpu, int ri, pmc_value_t *v)
{
struct pmc *pm;
pmc_value_t tmp;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] illegal CPU value %d", __LINE__, cpu));
KASSERT(ri >= 0 && ri < E500_MAX_PMCS,
("[powerpc,%d] illegal row index %d", __LINE__, ri));
pm = powerpc_pcpu[cpu]->pc_ppcpmcs[ri].phw_pmc;
KASSERT(pm,
("[core,%d] cpu %d ri %d pmc not configured", __LINE__, cpu,
ri));
tmp = e500_pmcn_read(ri);
PMCDBG2(MDP,REA,2,"ppc-read id=%d -> %jd", ri, tmp);
if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
*v = POWERPC_PERFCTR_VALUE_TO_RELOAD_COUNT(tmp);
else
*v = tmp;
return 0;
}
static int
e500_write_pmc(int cpu, int ri, pmc_value_t v)
{
struct pmc *pm;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] illegal CPU value %d", __LINE__, cpu));
KASSERT(ri >= 0 && ri < E500_MAX_PMCS,
("[powerpc,%d] illegal row-index %d", __LINE__, ri));
pm = powerpc_pcpu[cpu]->pc_ppcpmcs[ri].phw_pmc;
if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
v = POWERPC_RELOAD_COUNT_TO_PERFCTR_VALUE(v);
PMCDBG3(MDP,WRI,1,"powerpc-write cpu=%d ri=%d v=%jx", cpu, ri, v);
e500_pmcn_write(ri, v);
return 0;
}
static int
e500_config_pmc(int cpu, int ri, struct pmc *pm)
{
struct pmc_hw *phw;
PMCDBG3(MDP,CFG,1, "cpu=%d ri=%d pm=%p", cpu, ri, pm);
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] illegal CPU value %d", __LINE__, cpu));
KASSERT(ri >= 0 && ri < E500_MAX_PMCS,
("[powerpc,%d] illegal row-index %d", __LINE__, ri));
phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
KASSERT(pm == NULL || phw->phw_pmc == NULL,
("[powerpc,%d] pm=%p phw->pm=%p hwpmc not unconfigured",
__LINE__, pm, phw->phw_pmc));
phw->phw_pmc = pm;
return 0;
}
static int
e500_start_pmc(int cpu, int ri)
{
uint32_t config;
struct pmc *pm;
struct pmc_hw *phw;
phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
pm = phw->phw_pmc;
config = pm->pm_md.pm_powerpc.pm_powerpc_evsel;
if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
config |= PMLCax_CE;
/* Enable the PMC. */
switch (ri) {
case 0:
mtpmr(PMR_PMLCa0, config);
break;
case 1:
mtpmr(PMR_PMLCa1, config);
break;
case 2:
mtpmr(PMR_PMLCa2, config);
break;
case 3:
mtpmr(PMR_PMLCa3, config);
break;
default:
break;
}
return 0;
}
static int
e500_stop_pmc(int cpu, int ri)
{
struct pmc *pm;
struct pmc_hw *phw;
register_t pmc_pmlc;
phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
pm = phw->phw_pmc;
/*
* Disable the PMCs.
*/
switch (ri) {
case 0:
pmc_pmlc = mfpmr(PMR_PMLCa0);
pmc_pmlc |= PMLCax_FC;
mtpmr(PMR_PMLCa0, pmc_pmlc);
break;
case 1:
pmc_pmlc = mfpmr(PMR_PMLCa1);
pmc_pmlc |= PMLCax_FC;
mtpmr(PMR_PMLCa1, pmc_pmlc);
break;
case 2:
pmc_pmlc = mfpmr(PMR_PMLCa2);
pmc_pmlc |= PMLCax_FC;
mtpmr(PMR_PMLCa2, pmc_pmlc);
break;
case 3:
pmc_pmlc = mfpmr(PMR_PMLCa3);
pmc_pmlc |= PMLCax_FC;
mtpmr(PMR_PMLCa3, pmc_pmlc);
break;
default:
break;
}
return 0;
}
static int
e500_pcpu_init(struct pmc_mdep *md, int cpu)
{
int first_ri, i;
struct pmc_cpu *pc;
struct powerpc_cpu *pac;
struct pmc_hw *phw;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] wrong cpu number %d", __LINE__, cpu));
PMCDBG1(MDP,INI,1,"powerpc-init cpu=%d", cpu);
/* Freeze all counters. */
mtpmr(PMR_PMGC0, PMGC_FAC | PMGC_PMIE | PMGC_FCECE);
powerpc_pcpu[cpu] = pac = malloc(sizeof(struct powerpc_cpu), M_PMC,
M_WAITOK|M_ZERO);
pac->pc_ppcpmcs = malloc(sizeof(struct pmc_hw) * E500_MAX_PMCS,
M_PMC, M_WAITOK|M_ZERO);
pac->pc_class = PMC_CLASS_E500;
pc = pmc_pcpu[cpu];
first_ri = md->pmd_classdep[PMC_MDEP_CLASS_INDEX_POWERPC].pcd_ri;
KASSERT(pc != NULL, ("[powerpc,%d] NULL per-cpu pointer", __LINE__));
for (i = 0, phw = pac->pc_ppcpmcs; i < E500_MAX_PMCS; i++, phw++) {
phw->phw_state = PMC_PHW_FLAG_IS_ENABLED |
PMC_PHW_CPU_TO_STATE(cpu) | PMC_PHW_INDEX_TO_STATE(i);
phw->phw_pmc = NULL;
pc->pc_hwpmcs[i + first_ri] = phw;
/* Initialize the PMC to stopped */
e500_stop_pmc(cpu, i);
}
/* Unfreeze global register. */
mtpmr(PMR_PMGC0, PMGC_PMIE | PMGC_FCECE);
return 0;
}
static int
e500_pcpu_fini(struct pmc_mdep *md, int cpu)
{
uint32_t pmgc0 = mfpmr(PMR_PMGC0);
pmgc0 |= PMGC_FAC;
mtpmr(PMR_PMGC0, pmgc0);
mtmsr(mfmsr() & ~PSL_PMM);
free(powerpc_pcpu[cpu]->pc_ppcpmcs, M_PMC);
free(powerpc_pcpu[cpu], M_PMC);
return 0;
}
static int
e500_allocate_pmc(int cpu, int ri, struct pmc *pm,
const struct pmc_op_pmcallocate *a)
{
enum pmc_event pe;
uint32_t caps, config, counter;
struct e500_event_code_map *ev;
uint16_t vers;
uint8_t pe_cpu_mask;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] illegal CPU value %d", __LINE__, cpu));
KASSERT(ri >= 0 && ri < E500_MAX_PMCS,
("[powerpc,%d] illegal row index %d", __LINE__, ri));
caps = a->pm_caps;
pe = a->pm_ev;
config = PMLCax_FCS | PMLCax_FCU |
PMLCax_FCM1 | PMLCax_FCM1;
if (pe < PMC_EV_E500_FIRST || pe > PMC_EV_E500_LAST)
return (EINVAL);
ev = &e500_event_codes[pe-PMC_EV_E500_FIRST];
if (ev->pe_code == 0)
return (EINVAL);
vers = mfpvr() >> 16;
switch (vers) {
case FSL_E500v1:
pe_cpu_mask = ev->pe_code & PMC_PPC_E500V1;
break;
case FSL_E500v2:
pe_cpu_mask = ev->pe_code & PMC_PPC_E500V2;
break;
case FSL_E500mc:
case FSL_E5500:
pe_cpu_mask = ev->pe_code & PMC_PPC_E500MC;
break;
}
if (pe_cpu_mask == 0)
return (EINVAL);
config |= PMLCax_EVENT(ev->pe_code);
counter = ev->pe_counter_mask;
if ((counter & (1 << ri)) == 0)
return (EINVAL);
if (caps & PMC_CAP_SYSTEM)
config &= ~PMLCax_FCS;
if (caps & PMC_CAP_USER)
config &= ~PMLCax_FCU;
if ((caps & (PMC_CAP_USER | PMC_CAP_SYSTEM)) == 0)
config &= ~(PMLCax_FCS|PMLCax_FCU);
pm->pm_md.pm_powerpc.pm_powerpc_evsel = config;
PMCDBG2(MDP,ALL,2,"powerpc-allocate ri=%d -> config=0x%x", ri, config);
return 0;
}
static int
e500_release_pmc(int cpu, int ri, struct pmc *pmc)
{
struct pmc_hw *phw;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] illegal CPU value %d", __LINE__, cpu));
KASSERT(ri >= 0 && ri < E500_MAX_PMCS,
("[powerpc,%d] illegal row-index %d", __LINE__, ri));
phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
KASSERT(phw->phw_pmc == NULL,
("[powerpc,%d] PHW pmc %p non-NULL", __LINE__, phw->phw_pmc));
return 0;
}
static int
e500_intr(int cpu, struct trapframe *tf)
{
int i, error, retval;
uint32_t config;
struct pmc *pm;
struct powerpc_cpu *pac;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] out of range CPU %d", __LINE__, cpu));
PMCDBG3(MDP,INT,1, "cpu=%d tf=%p um=%d", cpu, (void *) tf,
TRAPF_USERMODE(tf));
retval = 0;
pac = powerpc_pcpu[cpu];
config = mfpmr(PMR_PMGC0) & ~PMGC_FAC;
/*
* look for all PMCs that have interrupted:
* - look for a running, sampling PMC which has overflowed
* and which has a valid 'struct pmc' association
*
* If found, we call a helper to process the interrupt.
*/
for (i = 0; i < E500_MAX_PMCS; i++) {
if ((pm = pac->pc_ppcpmcs[i].phw_pmc) == NULL ||
!PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm))) {
continue;
}
if (!E500_PMC_HAS_OVERFLOWED(i))
continue;
retval = 1; /* Found an interrupting PMC. */
if (pm->pm_state != PMC_STATE_RUNNING)
continue;
/* Stop the counter if logging fails. */
error = pmc_process_interrupt(cpu, PMC_HR, pm, tf,
TRAPF_USERMODE(tf));
if (error != 0)
e500_stop_pmc(cpu, i);
/* reload count. */
e500_write_pmc(cpu, i, pm->pm_sc.pm_reloadcount);
}
atomic_add_int(retval ? &pmc_stats.pm_intr_processed :
&pmc_stats.pm_intr_ignored, 1);
/* Re-enable PERF exceptions. */
if (retval)
mtpmr(PMR_PMGC0, config | PMGC_PMIE);
return (retval);
}
int
pmc_e500_initialize(struct pmc_mdep *pmc_mdep)
{
struct pmc_classdep *pcd;
pmc_mdep->pmd_cputype = PMC_CPU_PPC_E500;
pcd = &pmc_mdep->pmd_classdep[PMC_MDEP_CLASS_INDEX_POWERPC];
pcd->pcd_caps = POWERPC_PMC_CAPS;
pcd->pcd_class = PMC_CLASS_E500;
pcd->pcd_num = E500_MAX_PMCS;
pcd->pcd_ri = pmc_mdep->pmd_npmc;
pcd->pcd_width = 32;
pcd->pcd_allocate_pmc = e500_allocate_pmc;
pcd->pcd_config_pmc = e500_config_pmc;
pcd->pcd_pcpu_fini = e500_pcpu_fini;
pcd->pcd_pcpu_init = e500_pcpu_init;
pcd->pcd_describe = powerpc_describe;
pcd->pcd_get_config = powerpc_get_config;
pcd->pcd_read_pmc = e500_read_pmc;
pcd->pcd_release_pmc = e500_release_pmc;
pcd->pcd_start_pmc = e500_start_pmc;
pcd->pcd_stop_pmc = e500_stop_pmc;
pcd->pcd_write_pmc = e500_write_pmc;
pmc_mdep->pmd_npmc += E500_MAX_PMCS;
pmc_mdep->pmd_intr = e500_intr;
return (0);
}
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