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freebsd-dev/sys/dev/hwpmc/hwpmc_ppc970.c
Justin Hibbits 8a00edea58 Enable and disable the PMC unit at load/unload time, respectively. 
MFC after:	3 weeks
2014-04-18 06:39:00 +00:00

694 lines
17 KiB
C
Raw Blame History

/*-
* Copyright (c) 2013 Justin Hibbits
* 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/spr.h>
#include <machine/cpu.h>
#include "hwpmc_powerpc.h"
#define PPC970_MAX_PMCS 8
/* MMCR0, PMC1 is 8 bytes in, PMC2 is 1 byte in. */
#define PPC970_SET_MMCR0_PMCSEL(r, x, i) \
((r & ~(0x1f << (7 * (1 - i) + 1))) | (x << (7 * (1 - i) + 1)))
/* MMCR1 has 6 PMC*SEL items (PMC3->PMC8), in sequence. */
#define PPC970_SET_MMCR1_PMCSEL(r, x, i) \
((r & ~(0x1f << (5 * (7 - i) + 2))) | (x << (5 * (7 - i) + 2)))
#define PPC970_PMC_HAS_OVERFLOWED(x) (ppc970_pmcn_read(x) & (0x1 << 31))
/* How PMC works on PPC970:
*
* Any PMC can count a direct event. Indirect events are handled specially.
* Direct events: As published.
*
* Encoding 00 000 -- Add byte lane bit counters
* MMCR1[24:31] -- select bit matching PMC being an adder.
* Bus events:
* PMCxSEL: 1x -- select from byte lane: 10 == lower lane (0/1), 11 == upper
* lane (2/3).
* PMCxSEL[2:4] -- bit in the byte lane selected.
*
* PMC[1,2,5,6] == lane 0/lane 2
* PMC[3,4,7,8] == lane 1,3
*
*
* Lanes:
* Lane 0 -- TTM0(FPU,ISU,IFU,VPU)
* TTM1(IDU,ISU,STS)
* LSU0 byte 0
* LSU1 byte 0
* Lane 1 -- TTM0
* TTM1
* LSU0 byte 1
* LSU1 byte 1
* Lane 2 -- TTM0
* TTM1
* LSU0 byte 2
* LSU1 byte 2 or byte 6
* Lane 3 -- TTM0
* TTM1
* LSU0 byte 3
* LSU1 byte 3 or byte 7
*
* Adders:
* Add byte lane for PMC (above), bit 0+4, 1+5, 2+6, 3+7
*/
struct pmc_ppc970_event {
enum pmc_event pe_event;
uint32_t pe_flags;
#define PMC_PPC970_FLAG_PMCS 0x000000ff
#define PMC_PPC970_FLAG_PMC1 0x01
#define PMC_PPC970_FLAG_PMC2 0x02
#define PMC_PPC970_FLAG_PMC3 0x04
#define PMC_PPC970_FLAG_PMC4 0x08
#define PMC_PPC970_FLAG_PMC5 0x10
#define PMC_PPC970_FLAG_PMC6 0x20
#define PMC_PPC970_FLAG_PMC7 0x40
#define PMC_PPC970_FLAG_PMC8 0x80
uint32_t pe_code;
};
static struct pmc_ppc970_event ppc970_event_codes[] = {
{PMC_EV_PPC970_INSTR_COMPLETED,
.pe_flags = PMC_PPC970_FLAG_PMCS,
.pe_code = 0x09
},
{PMC_EV_PPC970_MARKED_GROUP_DISPATCH,
.pe_flags = PMC_PPC970_FLAG_PMC1,
.pe_code = 0x2
},
{PMC_EV_PPC970_MARKED_STORE_COMPLETED,
.pe_flags = PMC_PPC970_FLAG_PMC1,
.pe_code = 0x03
},
{PMC_EV_PPC970_GCT_EMPTY,
.pe_flags = PMC_PPC970_FLAG_PMC1,
.pe_code = 0x04
},
{PMC_EV_PPC970_RUN_CYCLES,
.pe_flags = PMC_PPC970_FLAG_PMC1,
.pe_code = 0x05
},
{PMC_EV_PPC970_OVERFLOW,
.pe_flags = PMC_PPC970_FLAG_PMCS,
.pe_code = 0x0a
},
{PMC_EV_PPC970_CYCLES,
.pe_flags = PMC_PPC970_FLAG_PMCS,
.pe_code = 0x0f
},
{PMC_EV_PPC970_THRESHOLD_TIMEOUT,
.pe_flags = PMC_PPC970_FLAG_PMC2,
.pe_code = 0x3
},
{PMC_EV_PPC970_GROUP_DISPATCH,
.pe_flags = PMC_PPC970_FLAG_PMC2,
.pe_code = 0x4
},
{PMC_EV_PPC970_BR_MARKED_INSTR_FINISH,
.pe_flags = PMC_PPC970_FLAG_PMC2,
.pe_code = 0x5
},
{PMC_EV_PPC970_GCT_EMPTY_BY_SRQ_FULL,
.pe_flags = PMC_PPC970_FLAG_PMC2,
.pe_code = 0xb
},
{PMC_EV_PPC970_STOP_COMPLETION,
.pe_flags = PMC_PPC970_FLAG_PMC3,
.pe_code = 0x1
},
{PMC_EV_PPC970_LSU_EMPTY,
.pe_flags = PMC_PPC970_FLAG_PMC3,
.pe_code = 0x2
},
{PMC_EV_PPC970_MARKED_STORE_WITH_INTR,
.pe_flags = PMC_PPC970_FLAG_PMC3,
.pe_code = 0x3
},
{PMC_EV_PPC970_CYCLES_IN_SUPER,
.pe_flags = PMC_PPC970_FLAG_PMC3,
.pe_code = 0x4
},
{PMC_EV_PPC970_VPU_MARKED_INSTR_COMPLETED,
.pe_flags = PMC_PPC970_FLAG_PMC3,
.pe_code = 0x5
},
{PMC_EV_PPC970_FXU0_IDLE_FXU1_BUSY,
.pe_flags = PMC_PPC970_FLAG_PMC4,
.pe_code = 0x2
},
{PMC_EV_PPC970_SRQ_EMPTY,
.pe_flags = PMC_PPC970_FLAG_PMC4,
.pe_code = 0x3
},
{PMC_EV_PPC970_MARKED_GROUP_COMPLETED,
.pe_flags = PMC_PPC970_FLAG_PMC4,
.pe_code = 0x4
},
{PMC_EV_PPC970_CR_MARKED_INSTR_FINISH,
.pe_flags = PMC_PPC970_FLAG_PMC4,
.pe_code = 0x5
},
{PMC_EV_PPC970_DISPATCH_SUCCESS,
.pe_flags = PMC_PPC970_FLAG_PMC5,
.pe_code = 0x1
},
{PMC_EV_PPC970_FXU0_IDLE_FXU1_IDLE,
.pe_flags = PMC_PPC970_FLAG_PMC5,
.pe_code = 0x2
},
{PMC_EV_PPC970_ONE_PLUS_INSTR_COMPLETED,
.pe_flags = PMC_PPC970_FLAG_PMC5,
.pe_code = 0x3
},
{PMC_EV_PPC970_GROUP_MARKED_IDU,
.pe_flags = PMC_PPC970_FLAG_PMC5,
.pe_code = 0x4
},
{PMC_EV_PPC970_MARKED_GROUP_COMPLETE_TIMEOUT,
.pe_flags = PMC_PPC970_FLAG_PMC5,
.pe_code = 0x5
},
{PMC_EV_PPC970_FXU0_BUSY_FXU1_BUSY,
.pe_flags = PMC_PPC970_FLAG_PMC6,
.pe_code = 0x2
},
{PMC_EV_PPC970_MARKED_STORE_SENT_TO_STS,
.pe_flags = PMC_PPC970_FLAG_PMC6,
.pe_code = 0x3
},
{PMC_EV_PPC970_FXU_MARKED_INSTR_FINISHED,
.pe_flags = PMC_PPC970_FLAG_PMC6,
.pe_code = 0x4
},
{PMC_EV_PPC970_MARKED_GROUP_ISSUED,
.pe_flags = PMC_PPC970_FLAG_PMC6,
.pe_code = 0x5
},
{PMC_EV_PPC970_FXU0_BUSY_FXU1_IDLE,
.pe_flags = PMC_PPC970_FLAG_PMC7,
.pe_code = 0x2
},
{PMC_EV_PPC970_GROUP_COMPLETED,
.pe_flags = PMC_PPC970_FLAG_PMC7,
.pe_code = 0x3
},
{PMC_EV_PPC970_FPU_MARKED_INSTR_COMPLETED,
.pe_flags = PMC_PPC970_FLAG_PMC7,
.pe_code = 0x4
},
{PMC_EV_PPC970_MARKED_INSTR_FINISH_ANY_UNIT,
.pe_flags = PMC_PPC970_FLAG_PMC7,
.pe_code = 0x5
},
{PMC_EV_PPC970_EXTERNAL_INTERRUPT,
.pe_flags = PMC_PPC970_FLAG_PMC8,
.pe_code = 0x2
},
{PMC_EV_PPC970_GROUP_DISPATCH_REJECT,
.pe_flags = PMC_PPC970_FLAG_PMC8,
.pe_code = 0x3
},
{PMC_EV_PPC970_LSU_MARKED_INSTR_FINISH,
.pe_flags = PMC_PPC970_FLAG_PMC8,
.pe_code = 0x4
},
{PMC_EV_PPC970_TIMEBASE_EVENT,
.pe_flags = PMC_PPC970_FLAG_PMC8,
.pe_code = 0x5
},
#if 0
{PMC_EV_PPC970_LSU_COMPLETION_STALL, },
{PMC_EV_PPC970_FXU_COMPLETION_STALL, },
{PMC_EV_PPC970_DCACHE_MISS_COMPLETION_STALL, },
{PMC_EV_PPC970_FPU_COMPLETION_STALL, },
{PMC_EV_PPC970_FXU_LONG_INSTR_COMPLETION_STALL, },
{PMC_EV_PPC970_REJECT_COMPLETION_STALL, },
{PMC_EV_PPC970_FPU_LONG_INSTR_COMPLETION_STALL, },
{PMC_EV_PPC970_GCT_EMPTY_BY_ICACHE_MISS, },
{PMC_EV_PPC970_REJECT_COMPLETION_STALL_ERAT_MISS, },
{PMC_EV_PPC970_GCT_EMPTY_BY_BRANCH_MISS_PREDICT, },
#endif
};
static size_t ppc970_event_codes_size = nitems(ppc970_event_codes);
static pmc_value_t
ppc970_pmcn_read(unsigned int pmc)
{
pmc_value_t val;
switch (pmc) {
case 0:
val = mfspr(SPR_970PMC1);
break;
case 1:
val = mfspr(SPR_970PMC2);
break;
case 2:
val = mfspr(SPR_970PMC3);
break;
case 3:
val = mfspr(SPR_970PMC4);
break;
case 4:
val = mfspr(SPR_970PMC5);
break;
case 5:
val = mfspr(SPR_970PMC6);
break;
case 6:
val = mfspr(SPR_970PMC7);
break;
case 7:
val = mfspr(SPR_970PMC8);
break;
default:
panic("Invalid PMC number: %d\n", pmc);
}
return (val);
}
static void
ppc970_pmcn_write(unsigned int pmc, uint32_t val)
{
switch (pmc) {
case 0:
mtspr(SPR_970PMC1, val);
break;
case 1:
mtspr(SPR_970PMC2, val);
break;
case 2:
mtspr(SPR_970PMC3, val);
break;
case 3:
mtspr(SPR_970PMC4, val);
break;
case 4:
mtspr(SPR_970PMC5, val);
break;
case 5:
mtspr(SPR_970PMC6, val);
break;
case 6:
mtspr(SPR_970PMC7, val);
break;
case 7:
mtspr(SPR_970PMC8, val);
break;
default:
panic("Invalid PMC number: %d\n", pmc);
}
}
static int
ppc970_config_pmc(int cpu, int ri, struct pmc *pm)
{
struct pmc_hw *phw;
PMCDBG(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 < PPC970_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
ppc970_set_pmc(int cpu, int ri, int config)
{
struct pmc *pm;
struct pmc_hw *phw;
register_t pmc_mmcr;
phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
pm = phw->phw_pmc;
/*
* Disable the PMCs.
*/
switch (ri) {
case 0:
case 1:
pmc_mmcr = mfspr(SPR_970MMCR0);
pmc_mmcr = PPC970_SET_MMCR0_PMCSEL(pmc_mmcr, config, ri);
mtspr(SPR_970MMCR0, pmc_mmcr);
break;
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
pmc_mmcr = mfspr(SPR_970MMCR1);
pmc_mmcr = PPC970_SET_MMCR1_PMCSEL(pmc_mmcr, config, ri);
mtspr(SPR_970MMCR1, pmc_mmcr);
break;
}
return 0;
}
static int
ppc970_start_pmc(int cpu, int ri)
{
struct pmc *pm;
struct pmc_hw *phw;
register_t pmc_mmcr;
uint32_t config;
int error;
phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
pm = phw->phw_pmc;
config = pm->pm_md.pm_powerpc.pm_powerpc_evsel & ~POWERPC_PMC_ENABLE;
error = ppc970_set_pmc(cpu, ri, config);
/* The mask is inverted (enable is 1) compared to the flags in MMCR0, which
* are Freeze flags.
*/
config = ~pm->pm_md.pm_powerpc.pm_powerpc_evsel & POWERPC_PMC_ENABLE;
pmc_mmcr = mfspr(SPR_970MMCR0);
pmc_mmcr &= ~SPR_MMCR0_FC;
pmc_mmcr |= config;
mtspr(SPR_970MMCR0, pmc_mmcr);
return 0;
}
static int
ppc970_stop_pmc(int cpu, int ri)
{
return ppc970_set_pmc(cpu, ri, PMC970N_NONE);
}
static int
ppc970_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 < PPC970_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 = ppc970_pmcn_read(ri);
PMCDBG(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
ppc970_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 < PPC970_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);
PMCDBG(MDP,WRI,1,"powerpc-write cpu=%d ri=%d v=%jx", cpu, ri, v);
ppc970_pmcn_write(ri, v);
return 0;
}
static int
ppc970_intr(int cpu, struct trapframe *tf)
{
struct pmc *pm;
struct powerpc_cpu *pac;
pmc_value_t v;
uint32_t config;
int i, error, retval;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] out of range CPU %d", __LINE__, cpu));
PMCDBG(MDP,INT,1, "cpu=%d tf=%p um=%d", cpu, (void *) tf,
TRAPF_USERMODE(tf));
retval = 0;
pac = powerpc_pcpu[cpu];
/*
* 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.
*/
config = mfspr(SPR_970MMCR0);
mtspr(SPR_970MMCR0, config | SPR_MMCR0_FC);
for (i = 0; i < PPC970_MAX_PMCS; i++) {
if ((pm = pac->pc_ppcpmcs[i].phw_pmc) == NULL ||
!PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm))) {
continue;
}
if (!PPC970_PMC_HAS_OVERFLOWED(i))
continue;
retval = 1; /* Found an interrupting PMC. */
if (pm->pm_state != PMC_STATE_RUNNING)
continue;
/* Stop the PMC, reload count. */
v = pm->pm_sc.pm_reloadcount;
ppc970_pmcn_write(i, v);
/* Restart the counter if logging succeeded. */
error = pmc_process_interrupt(cpu, PMC_HR, pm, tf,
TRAPF_USERMODE(tf));
mtspr(SPR_970MMCR0, config);
if (error != 0)
ppc970_stop_pmc(cpu, i);
atomic_add_int(retval ? &pmc_stats.pm_intr_processed :
&pmc_stats.pm_intr_ignored, 1);
}
/* Re-enable PERF exceptions. */
mtspr(SPR_970MMCR0, mfspr(SPR_970MMCR0) | SPR_MMCR0_PMXE);
return (retval);
}
static int
ppc970_pcpu_init(struct pmc_mdep *md, int cpu)
{
struct pmc_cpu *pc;
struct powerpc_cpu *pac;
struct pmc_hw *phw;
int first_ri, i;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] wrong cpu number %d", __LINE__, cpu));
PMCDBG(MDP,INI,1,"powerpc-init cpu=%d", cpu);
powerpc_pcpu[cpu] = pac = malloc(sizeof(struct powerpc_cpu), M_PMC,
M_WAITOK|M_ZERO);
pac->pc_ppcpmcs = malloc(sizeof(struct pmc_hw) * PPC970_MAX_PMCS,
M_PMC, M_WAITOK|M_ZERO);
pac->pc_class = PMC_CLASS_PPC970;
pc = pmc_pcpu[cpu];
first_ri = md->pmd_classdep[PMC_MDEP_CLASS_INDEX_PPC970].pcd_ri;
KASSERT(pc != NULL, ("[powerpc,%d] NULL per-cpu pointer", __LINE__));
for (i = 0, phw = pac->pc_ppcpmcs; i < PPC970_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;
}
/* Clear the MMCRs, and set FC, to disable all PMCs. */
/* 970 PMC is not counted when set to 0x08 */
mtspr(SPR_970MMCR0, SPR_MMCR0_FC | SPR_MMCR0_PMXE | SPR_MMCR0_PMC1CE |
SPR_MMCR0_PMCNCE | SPR_970MMCR0_PMC1SEL(0x8) | SPR_970MMCR0_PMC2SEL(0x8));
mtspr(SPR_970MMCR1, 0x4218420);
mtmsr(mfmsr() | PSL_PMM);
return 0;
}
static int
ppc970_pcpu_fini(struct pmc_mdep *md, int cpu)
{
register_t mmcr0 = mfspr(SPR_MMCR0);
mtmsr(mfmsr() & ~PSL_PMM);
mmcr0 |= SPR_MMCR0_FC;
mmcr0 &= ~SPR_MMCR0_PMXE;
mtspr(SPR_MMCR0, mmcr0);
free(powerpc_pcpu[cpu]->pc_ppcpmcs, M_PMC);
free(powerpc_pcpu[cpu], M_PMC);
return 0;
}
static int
ppc970_allocate_pmc(int cpu, int ri, struct pmc *pm,
const struct pmc_op_pmcallocate *a)
{
enum pmc_event pe;
uint32_t caps, config = 0, counter = 0;
int i;
KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
("[powerpc,%d] illegal CPU value %d", __LINE__, cpu));
KASSERT(ri >= 0 && ri < PPC970_MAX_PMCS,
("[powerpc,%d] illegal row index %d", __LINE__, ri));
caps = a->pm_caps;
pe = a->pm_ev;
if (pe < PMC_EV_PPC970_FIRST || pe > PMC_EV_PPC970_LAST)
return (EINVAL);
for (i = 0; i < ppc970_event_codes_size; i++) {
if (ppc970_event_codes[i].pe_event == pe) {
config = ppc970_event_codes[i].pe_code;
counter = ppc970_event_codes[i].pe_flags;
break;
}
}
if (i == ppc970_event_codes_size)
return (EINVAL);
if ((counter & (1 << ri)) == 0)
return (EINVAL);
if (caps & PMC_CAP_SYSTEM)
config |= POWERPC_PMC_KERNEL_ENABLE;
if (caps & PMC_CAP_USER)
config |= POWERPC_PMC_USER_ENABLE;
if ((caps & (PMC_CAP_USER | PMC_CAP_SYSTEM)) == 0)
config |= POWERPC_PMC_ENABLE;
pm->pm_md.pm_powerpc.pm_powerpc_evsel = config;
PMCDBG(MDP,ALL,2,"powerpc-allocate ri=%d -> config=0x%x", ri, config);
return 0;
}
static int
ppc970_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 < PPC970_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;
}
int
pmc_ppc970_initialize(struct pmc_mdep *pmc_mdep)
{
struct pmc_classdep *pcd;
pmc_mdep->pmd_cputype = PMC_CPU_PPC_970;
pcd = &pmc_mdep->pmd_classdep[PMC_MDEP_CLASS_INDEX_PPC970];
pcd->pcd_caps = POWERPC_PMC_CAPS;
pcd->pcd_class = PMC_CLASS_PPC970;
pcd->pcd_num = PPC970_MAX_PMCS;
pcd->pcd_ri = pmc_mdep->pmd_npmc;
pcd->pcd_width = 32;
pcd->pcd_allocate_pmc = ppc970_allocate_pmc;
pcd->pcd_config_pmc = ppc970_config_pmc;
pcd->pcd_pcpu_fini = ppc970_pcpu_fini;
pcd->pcd_pcpu_init = ppc970_pcpu_init;
pcd->pcd_describe = powerpc_describe;
pcd->pcd_get_config = powerpc_get_config;
pcd->pcd_read_pmc = ppc970_read_pmc;
pcd->pcd_release_pmc = ppc970_release_pmc;
pcd->pcd_start_pmc = ppc970_start_pmc;
pcd->pcd_stop_pmc = ppc970_stop_pmc;
pcd->pcd_write_pmc = ppc970_write_pmc;
pmc_mdep->pmd_npmc += PPC970_MAX_PMCS;
pmc_mdep->pmd_intr = ppc970_intr;
return (0);
}
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