180 lines
4.2 KiB
C
180 lines
4.2 KiB
C
/*-
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* Copyright (c) 2011,2013 Justin Hibbits
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* Copyright (c) 2005, Joseph Koshy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/pmc.h>
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#include <sys/pmckern.h>
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#include <sys/systm.h>
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#include <machine/pmc_mdep.h>
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#include <machine/spr.h>
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#include <machine/pte.h>
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#include <machine/sr.h>
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#include <machine/cpu.h>
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#include <machine/vmparam.h> /* For VM_MIN_KERNEL_ADDRESS/VM_MAX_KERNEL_ADDRESS */
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#include "hwpmc_powerpc.h"
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#define INKERNEL(x) (((vm_offset_t)(x)) <= VM_MAX_KERNEL_ADDRESS && \
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((vm_offset_t)(x)) >= VM_MIN_KERNEL_ADDRESS)
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struct powerpc_cpu **powerpc_pcpu;
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int
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pmc_save_kernel_callchain(uintptr_t *cc, int maxsamples,
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struct trapframe *tf)
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{
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int frames = 0;
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uintptr_t *sp;
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cc[frames++] = tf->srr0;
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sp = (uintptr_t *)tf->fixreg[1];
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for (frames = 1; frames < maxsamples; frames++) {
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if (!INKERNEL(sp))
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break;
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cc[frames++] = *(sp + 1);
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sp = (uintptr_t *)*sp;
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}
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return (frames);
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}
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static int
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powerpc_switch_in(struct pmc_cpu *pc, struct pmc_process *pp)
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{
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return (0);
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}
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static int
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powerpc_switch_out(struct pmc_cpu *pc, struct pmc_process *pp)
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{
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return (0);
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}
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int
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powerpc_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc)
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{
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int error;
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struct pmc_hw *phw;
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char powerpc_name[PMC_NAME_MAX];
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KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
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("[powerpc,%d], illegal CPU %d", __LINE__, cpu));
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phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
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snprintf(powerpc_name, sizeof(powerpc_name), "POWERPC-%d", ri);
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if ((error = copystr(powerpc_name, pi->pm_name, PMC_NAME_MAX,
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NULL)) != 0)
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return error;
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pi->pm_class = PMC_CLASS_PPC7450;
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if (phw->phw_state & PMC_PHW_FLAG_IS_ENABLED) {
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pi->pm_enabled = TRUE;
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*ppmc = phw->phw_pmc;
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} else {
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pi->pm_enabled = FALSE;
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*ppmc = NULL;
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}
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return (0);
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}
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int
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powerpc_get_config(int cpu, int ri, struct pmc **ppm)
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{
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*ppm = powerpc_pcpu[cpu]->pc_ppcpmcs[ri].phw_pmc;
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return (0);
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}
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struct pmc_mdep *
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pmc_md_initialize()
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{
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struct pmc_mdep *pmc_mdep;
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int error;
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uint16_t vers;
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/*
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* Allocate space for pointers to PMC HW descriptors and for
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* the MDEP structure used by MI code.
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*/
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powerpc_pcpu = malloc(sizeof(struct powerpc_cpu *) * pmc_cpu_max(), M_PMC,
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M_WAITOK|M_ZERO);
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/* Just one class */
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pmc_mdep = pmc_mdep_alloc(1);
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pmc_mdep->pmd_cputype = PMC_CPU_PPC_7450;
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vers = mfpvr() >> 16;
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pmc_mdep->pmd_switch_in = powerpc_switch_in;
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pmc_mdep->pmd_switch_out = powerpc_switch_out;
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switch (vers) {
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case MPC7447A:
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case MPC7448:
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case MPC7450:
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case MPC7455:
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case MPC7457:
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error = pmc_mpc7xxx_initialize(pmc_mdep);
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case IBM970:
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case IBM970FX:
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case IBM970MP:
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default:
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error = -1;
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break;
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}
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if (error != 0) {
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pmc_mdep_free(pmc_mdep);
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pmc_mdep = NULL;
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return NULL;
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}
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return (pmc_mdep);
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}
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void
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pmc_md_finalize(struct pmc_mdep *md)
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{
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free(md, M_PMC);
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}
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int
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pmc_save_user_callchain(uintptr_t *cc, int maxsamples,
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struct trapframe *tf)
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{
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(void) cc;
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(void) maxsamples;
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(void) tf;
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return (0);
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}
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