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/sysent.h>
36 #include <sys/systm.h>
38 #include <machine/pmc_mdep.h>
39 #include <machine/spr.h>
40 #include <machine/pte.h>
41 #include <machine/sr.h>
42 #include <machine/cpu.h>
43 #include <machine/stack.h>
45 #include "hwpmc_powerpc.h"
48 #define OFFSET 4 /* Account for the TOC reload slot */
53 struct powerpc_cpu **powerpc_pcpu;
56 pmc_save_kernel_callchain(uintptr_t *cc, int maxsamples,
63 cc[frames++] = PMC_TRAPFRAME_TO_PC(tf);
64 sp = (uintptr_t *)PMC_TRAPFRAME_TO_FP(tf);
65 osp = (uintptr_t *)PAGE_SIZE;
67 for (; frames < maxsamples; frames++) {
75 if ((pc & 3) || (pc < 0x100))
79 * trapexit() and asttrapexit() are sentinels
80 * for kernel stack tracing.
82 if (pc + OFFSET == (uintptr_t) &trapexit ||
83 pc + OFFSET == (uintptr_t) &asttrapexit)
88 sp = (uintptr_t *)*sp;
94 powerpc_switch_in(struct pmc_cpu *pc, struct pmc_process *pp)
101 powerpc_switch_out(struct pmc_cpu *pc, struct pmc_process *pp)
108 powerpc_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc)
112 char powerpc_name[PMC_NAME_MAX];
114 KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
115 ("[powerpc,%d], illegal CPU %d", __LINE__, cpu));
117 phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri];
118 snprintf(powerpc_name, sizeof(powerpc_name), "POWERPC-%d", ri);
119 if ((error = copystr(powerpc_name, pi->pm_name, PMC_NAME_MAX,
122 pi->pm_class = powerpc_pcpu[cpu]->pc_class;
123 if (phw->phw_state & PMC_PHW_FLAG_IS_ENABLED) {
124 pi->pm_enabled = TRUE;
125 *ppmc = phw->phw_pmc;
127 pi->pm_enabled = FALSE;
135 powerpc_get_config(int cpu, int ri, struct pmc **ppm)
138 *ppm = powerpc_pcpu[cpu]->pc_ppcpmcs[ri].phw_pmc;
146 struct pmc_mdep *pmc_mdep;
151 * Allocate space for pointers to PMC HW descriptors and for
152 * the MDEP structure used by MI code.
154 powerpc_pcpu = malloc(sizeof(struct powerpc_cpu *) * pmc_cpu_max(), M_PMC,
158 pmc_mdep = pmc_mdep_alloc(1);
160 vers = mfpvr() >> 16;
162 pmc_mdep->pmd_switch_in = powerpc_switch_in;
163 pmc_mdep->pmd_switch_out = powerpc_switch_out;
171 error = pmc_mpc7xxx_initialize(pmc_mdep);
176 error = pmc_ppc970_initialize(pmc_mdep);
182 error = pmc_e500_initialize(pmc_mdep);
190 pmc_mdep_free(pmc_mdep);
198 pmc_md_finalize(struct pmc_mdep *md)
201 free(powerpc_pcpu, M_PMC);
206 pmc_save_user_callchain(uintptr_t *cc, int maxsamples,
207 struct trapframe *tf)
212 cc[frames++] = PMC_TRAPFRAME_TO_PC(tf);
213 sp = (uintptr_t *)PMC_TRAPFRAME_TO_FP(tf);
216 for (; frames < maxsamples; frames++) {
221 /* Check if 32-bit mode. */
222 if (!(tf->srr1 & PSL_SF)) {
223 cc[frames] = fuword32((uint32_t *)sp + 1);
224 sp = (uintptr_t *)(uintptr_t)fuword32(sp);
226 cc[frames] = fuword(sp + 2);
227 sp = (uintptr_t *)fuword(sp);
230 cc[frames] = fuword32((uint32_t *)sp + 1);
231 sp = (uintptr_t *)fuword32(sp);