hwpmc_powerpc.c revision 268207
1147191Sjkoshy/*- 2255164Sjhibbits * Copyright (c) 2011,2013 Justin Hibbits 3147191Sjkoshy * Copyright (c) 2005, Joseph Koshy 4147191Sjkoshy * All rights reserved. 5147191Sjkoshy * 6147191Sjkoshy * Redistribution and use in source and binary forms, with or without 7147191Sjkoshy * modification, are permitted provided that the following conditions 8147191Sjkoshy * are met: 9147191Sjkoshy * 1. Redistributions of source code must retain the above copyright 10147191Sjkoshy * notice, this list of conditions and the following disclaimer. 11147191Sjkoshy * 2. Redistributions in binary form must reproduce the above copyright 12147191Sjkoshy * notice, this list of conditions and the following disclaimer in the 13147191Sjkoshy * documentation and/or other materials provided with the distribution. 14147191Sjkoshy * 15147191Sjkoshy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16147191Sjkoshy * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17147191Sjkoshy * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18147191Sjkoshy * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19147191Sjkoshy * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20147191Sjkoshy * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21147191Sjkoshy * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22147191Sjkoshy * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23147191Sjkoshy * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24147191Sjkoshy * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25147191Sjkoshy * SUCH DAMAGE. 26147191Sjkoshy * 27147191Sjkoshy */ 28147191Sjkoshy 29147191Sjkoshy#include <sys/cdefs.h> 30147191Sjkoshy__FBSDID("$FreeBSD: head/sys/dev/hwpmc/hwpmc_powerpc.c 268207 2014-07-03 06:52:26Z jhibbits $"); 31147191Sjkoshy 32147191Sjkoshy#include <sys/param.h> 33147191Sjkoshy#include <sys/pmc.h> 34228869Sjhibbits#include <sys/pmckern.h> 35262547Sjhibbits#include <sys/sysent.h> 36228869Sjhibbits#include <sys/systm.h> 37147191Sjkoshy 38147191Sjkoshy#include <machine/pmc_mdep.h> 39228869Sjhibbits#include <machine/spr.h> 40255199Sjhibbits#include <machine/pte.h> 41255199Sjhibbits#include <machine/sr.h> 42228869Sjhibbits#include <machine/cpu.h> 43255164Sjhibbits#include <machine/vmparam.h> /* For VM_MIN_KERNEL_ADDRESS/VM_MAX_KERNEL_ADDRESS */ 44147191Sjkoshy 45255164Sjhibbits#include "hwpmc_powerpc.h" 46174410Sjkoshy 47255164Sjhibbits#define INKERNEL(x) (((vm_offset_t)(x)) <= VM_MAX_KERNEL_ADDRESS && \ 48255164Sjhibbits ((vm_offset_t)(x)) >= VM_MIN_KERNEL_ADDRESS) 49259395Sjhibbits#define INUSER(x) (((vm_offset_t)(x)) <= VM_MAXUSER_ADDRESS && \ 50259395Sjhibbits ((vm_offset_t)(x)) >= VM_MIN_ADDRESS) 51185168Sjkoshy 52255228Sjhibbitsstruct powerpc_cpu **powerpc_pcpu; 53255228Sjhibbits 54174410Sjkoshyint 55174410Sjkoshypmc_save_kernel_callchain(uintptr_t *cc, int maxsamples, 56174410Sjkoshy struct trapframe *tf) 57174410Sjkoshy{ 58268207Sjhibbits uintptr_t *osp, *sp; 59255164Sjhibbits int frames = 0; 60174410Sjkoshy 61259395Sjhibbits cc[frames++] = PMC_TRAPFRAME_TO_PC(tf); 62259395Sjhibbits sp = (uintptr_t *)PMC_TRAPFRAME_TO_FP(tf); 63268207Sjhibbits osp = NULL; 64228869Sjhibbits 65262547Sjhibbits for (; frames < maxsamples; frames++) { 66268207Sjhibbits if (!INKERNEL(sp) || sp <= osp) 67228869Sjhibbits break; 68262547Sjhibbits#ifdef __powerpc64__ 69268207Sjhibbits cc[frames] = sp[2]; 70262547Sjhibbits#else 71268207Sjhibbits cc[frames] = sp[1]; 72262547Sjhibbits#endif 73268207Sjhibbits osp = sp; 74255164Sjhibbits sp = (uintptr_t *)*sp; 75228869Sjhibbits } 76255164Sjhibbits return (frames); 77228869Sjhibbits} 78228869Sjhibbits 79228869Sjhibbitsstatic int 80228869Sjhibbitspowerpc_switch_in(struct pmc_cpu *pc, struct pmc_process *pp) 81228869Sjhibbits{ 82262547Sjhibbits 83255164Sjhibbits return (0); 84228869Sjhibbits} 85228869Sjhibbits 86228869Sjhibbitsstatic int 87228869Sjhibbitspowerpc_switch_out(struct pmc_cpu *pc, struct pmc_process *pp) 88228869Sjhibbits{ 89262547Sjhibbits 90255164Sjhibbits return (0); 91228869Sjhibbits} 92228869Sjhibbits 93255164Sjhibbitsint 94228869Sjhibbitspowerpc_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc) 95228869Sjhibbits{ 96228869Sjhibbits int error; 97228869Sjhibbits struct pmc_hw *phw; 98228869Sjhibbits char powerpc_name[PMC_NAME_MAX]; 99228869Sjhibbits 100228869Sjhibbits KASSERT(cpu >= 0 && cpu < pmc_cpu_max(), 101228869Sjhibbits ("[powerpc,%d], illegal CPU %d", __LINE__, cpu)); 102228869Sjhibbits 103228869Sjhibbits phw = &powerpc_pcpu[cpu]->pc_ppcpmcs[ri]; 104228869Sjhibbits snprintf(powerpc_name, sizeof(powerpc_name), "POWERPC-%d", ri); 105228869Sjhibbits if ((error = copystr(powerpc_name, pi->pm_name, PMC_NAME_MAX, 106228869Sjhibbits NULL)) != 0) 107228869Sjhibbits return error; 108261342Sjhibbits pi->pm_class = powerpc_pcpu[cpu]->pc_class; 109228869Sjhibbits if (phw->phw_state & PMC_PHW_FLAG_IS_ENABLED) { 110228869Sjhibbits pi->pm_enabled = TRUE; 111228869Sjhibbits *ppmc = phw->phw_pmc; 112228869Sjhibbits } else { 113228869Sjhibbits pi->pm_enabled = FALSE; 114228869Sjhibbits *ppmc = NULL; 115228869Sjhibbits } 116228869Sjhibbits 117228869Sjhibbits return (0); 118228869Sjhibbits} 119228869Sjhibbits 120255164Sjhibbitsint 121228869Sjhibbitspowerpc_get_config(int cpu, int ri, struct pmc **ppm) 122228869Sjhibbits{ 123262547Sjhibbits 124228869Sjhibbits *ppm = powerpc_pcpu[cpu]->pc_ppcpmcs[ri].phw_pmc; 125228869Sjhibbits 126255164Sjhibbits return (0); 127228869Sjhibbits} 128228869Sjhibbits 129228869Sjhibbitsstruct pmc_mdep * 130228869Sjhibbitspmc_md_initialize() 131228869Sjhibbits{ 132228869Sjhibbits struct pmc_mdep *pmc_mdep; 133255164Sjhibbits int error; 134255164Sjhibbits uint16_t vers; 135228869Sjhibbits 136228869Sjhibbits /* 137228869Sjhibbits * Allocate space for pointers to PMC HW descriptors and for 138228869Sjhibbits * the MDEP structure used by MI code. 139228869Sjhibbits */ 140228869Sjhibbits powerpc_pcpu = malloc(sizeof(struct powerpc_cpu *) * pmc_cpu_max(), M_PMC, 141228869Sjhibbits M_WAITOK|M_ZERO); 142228869Sjhibbits 143228869Sjhibbits /* Just one class */ 144234598Sfabient pmc_mdep = pmc_mdep_alloc(1); 145228869Sjhibbits 146255164Sjhibbits vers = mfpvr() >> 16; 147228869Sjhibbits 148228869Sjhibbits pmc_mdep->pmd_switch_in = powerpc_switch_in; 149228869Sjhibbits pmc_mdep->pmd_switch_out = powerpc_switch_out; 150228869Sjhibbits 151255164Sjhibbits switch (vers) { 152255164Sjhibbits case MPC7447A: 153255164Sjhibbits case MPC7448: 154255164Sjhibbits case MPC7450: 155255164Sjhibbits case MPC7455: 156255164Sjhibbits case MPC7457: 157255164Sjhibbits error = pmc_mpc7xxx_initialize(pmc_mdep); 158261173Sjhibbits break; 159255164Sjhibbits case IBM970: 160255164Sjhibbits case IBM970FX: 161255164Sjhibbits case IBM970MP: 162261342Sjhibbits error = pmc_ppc970_initialize(pmc_mdep); 163261342Sjhibbits break; 164255164Sjhibbits default: 165255164Sjhibbits error = -1; 166255164Sjhibbits break; 167255164Sjhibbits } 168228869Sjhibbits 169255164Sjhibbits if (error != 0) { 170255164Sjhibbits pmc_mdep_free(pmc_mdep); 171255164Sjhibbits pmc_mdep = NULL; 172255164Sjhibbits } 173255164Sjhibbits 174228869Sjhibbits return (pmc_mdep); 175228869Sjhibbits} 176228869Sjhibbits 177228869Sjhibbitsvoid 178228869Sjhibbitspmc_md_finalize(struct pmc_mdep *md) 179228869Sjhibbits{ 180261342Sjhibbits 181261342Sjhibbits free(powerpc_pcpu, M_PMC); 182261342Sjhibbits powerpc_pcpu = NULL; 183228869Sjhibbits} 184228869Sjhibbits 185174410Sjkoshyint 186174410Sjkoshypmc_save_user_callchain(uintptr_t *cc, int maxsamples, 187174410Sjkoshy struct trapframe *tf) 188174410Sjkoshy{ 189268207Sjhibbits uintptr_t *osp, *sp; 190259395Sjhibbits int frames = 0; 191259395Sjhibbits 192259395Sjhibbits cc[frames++] = PMC_TRAPFRAME_TO_PC(tf); 193259395Sjhibbits sp = (uintptr_t *)PMC_TRAPFRAME_TO_FP(tf); 194268207Sjhibbits osp = NULL; 195259395Sjhibbits 196262547Sjhibbits for (; frames < maxsamples; frames++) { 197268207Sjhibbits if (!INUSER(sp) || sp <= osp) 198259395Sjhibbits break; 199268207Sjhibbits osp = sp; 200262547Sjhibbits#ifdef __powerpc64__ 201262547Sjhibbits /* Check if 32-bit mode. */ 202262547Sjhibbits if (!(tf->srr1 & PSL_SF)) { 203268207Sjhibbits cc[frames] = fuword32((uint32_t *)sp + 1); 204262547Sjhibbits sp = (uintptr_t *)(uintptr_t)fuword32(sp); 205262547Sjhibbits } else { 206268207Sjhibbits cc[frames] = fuword(sp + 2); 207262547Sjhibbits sp = (uintptr_t *)fuword(sp); 208262547Sjhibbits } 209262547Sjhibbits#else 210268207Sjhibbits cc[frames] = fuword32((uint32_t *)sp + 1); 211262547Sjhibbits sp = (uintptr_t *)fuword32(sp); 212262547Sjhibbits#endif 213259395Sjhibbits } 214262547Sjhibbits 215259395Sjhibbits return (frames); 216174410Sjkoshy} 217