2 * Copyright (c) 2011,2013 Justin Hibbits
3 * Copyright (c) 2005, Joseph Koshy
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
34 #include <sys/pmckern.h>
35 #include <sys/systm.h>
37 #include <machine/pmc_mdep.h>
38 #include <machine/spr.h>
39 #include <machine/pte.h>
40 #include <machine/sr.h>
41 #include <machine/cpu.h>
42 #include <machine/vmparam.h> /* For VM_MIN_KERNEL_ADDRESS/VM_MAX_KERNEL_ADDRESS */
44 #include "hwpmc_powerpc.h"
46 #define INKERNEL(x) (((vm_offset_t)(x)) <= VM_MAX_KERNEL_ADDRESS && \
47 ((vm_offset_t)(x)) >= VM_MIN_KERNEL_ADDRESS)
49 struct powerpc_cpu **powerpc_pcpu;
52 pmc_save_kernel_callchain(uintptr_t *cc, int maxsamples,
58 cc[frames++] = tf->srr0;
59 sp = (uintptr_t *)tf->fixreg[1];
61 for (frames = 1; frames < maxsamples; frames++) {
64 cc[frames++] = *(sp + 1);
65 sp = (uintptr_t *)*sp;
71 powerpc_switch_in(struct pmc_cpu *pc, struct pmc_process *pp)
77 powerpc_switch_out(struct pmc_cpu *pc, struct pmc_process *pp)
83 powerpc_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc)
87 char powerpc_name[PMC_NAME_MAX];
89 KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
90 ("[powerpc,%d], illegal CPU %d", __LINE__, cpu));
92 phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
93 snprintf(powerpc_name, sizeof(powerpc_name), "POWERPC-%d", ri);
94 if ((error = copystr(powerpc_name, pi->pm_name, PMC_NAME_MAX,
97 pi->pm_class = PMC_CLASS_PPC7450;
98 if (phw->phw_state & PMC_PHW_FLAG_IS_ENABLED) {
99 pi->pm_enabled = TRUE;
100 *ppmc = phw->phw_pmc;
102 pi->pm_enabled = FALSE;
110 powerpc_get_config(int cpu, int ri, struct pmc **ppm)
112 *ppm = powerpc_pcpu[cpu]->pc_ppcpmcs[ri].phw_pmc;
120 struct pmc_mdep *pmc_mdep;
125 * Allocate space for pointers to PMC HW descriptors and for
126 * the MDEP structure used by MI code.
128 powerpc_pcpu = malloc(sizeof(struct powerpc_cpu *) * pmc_cpu_max(), M_PMC,
132 pmc_mdep = pmc_mdep_alloc(1);
134 pmc_mdep->pmd_cputype = PMC_CPU_PPC_7450;
136 vers = mfpvr() >> 16;
138 pmc_mdep->pmd_switch_in = powerpc_switch_in;
139 pmc_mdep->pmd_switch_out = powerpc_switch_out;
147 error = pmc_mpc7xxx_initialize(pmc_mdep);
157 pmc_mdep_free(pmc_mdep);
166 pmc_md_finalize(struct pmc_mdep *md)
172 pmc_save_user_callchain(uintptr_t *cc, int maxsamples,
173 struct trapframe *tf)