^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * @file arch/alpha/oprofile/common.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * @remark Copyright 2002 OProfile authors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * @remark Read the file COPYING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * @author Richard Henderson <rth@twiddle.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/oprofile.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/special_insns.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "op_impl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) extern struct op_axp_model op_model_ev4 __attribute__((weak));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) extern struct op_axp_model op_model_ev5 __attribute__((weak));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) extern struct op_axp_model op_model_pca56 __attribute__((weak));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) extern struct op_axp_model op_model_ev6 __attribute__((weak));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) extern struct op_axp_model op_model_ev67 __attribute__((weak));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct op_axp_model *model;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) extern void (*perf_irq)(unsigned long, struct pt_regs *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static void (*save_perf_irq)(unsigned long, struct pt_regs *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static struct op_counter_config ctr[20];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static struct op_system_config sys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct op_register_config reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* Called from do_entInt to handle the performance monitor interrupt. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) op_handle_interrupt(unsigned long which, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) model->handle_interrupt(which, regs, ctr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* If the user has selected an interrupt frequency that is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) not exactly the width of the counter, write a new value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) into the counter such that it'll overflow after N more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) events. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if ((reg.need_reset >> which) & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) model->reset_ctr(®, which);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) op_axp_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) unsigned long i, e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* Install our interrupt handler into the existing hook. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) save_perf_irq = perf_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) perf_irq = op_handle_interrupt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* Compute the mask of enabled counters. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) for (i = e = 0; i < model->num_counters; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (ctr[i].enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) e |= 1 << i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) reg.enable = e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* Pre-compute the values to stuff in the hardware registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) model->reg_setup(®, ctr, &sys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* Configure the registers on all cpus. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) smp_call_function(model->cpu_setup, ®, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) model->cpu_setup(®);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) op_axp_shutdown(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* Remove our interrupt handler. We may be removing this module. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) perf_irq = save_perf_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) op_axp_cpu_start(void *dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) wrperfmon(1, reg.enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) op_axp_start(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) smp_call_function(op_axp_cpu_start, NULL, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) op_axp_cpu_start(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) op_axp_cpu_stop(void *dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /* Disable performance monitoring for all counters. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) wrperfmon(0, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) op_axp_stop(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) smp_call_function(op_axp_cpu_stop, NULL, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) op_axp_cpu_stop(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) op_axp_create_files(struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) for (i = 0; i < model->num_counters; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct dentry *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) char buf[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) snprintf(buf, sizeof buf, "%d", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) dir = oprofilefs_mkdir(root, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) oprofilefs_create_ulong(dir, "enabled", &ctr[i].enabled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) oprofilefs_create_ulong(dir, "event", &ctr[i].event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) oprofilefs_create_ulong(dir, "count", &ctr[i].count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* Dummies. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) oprofilefs_create_ulong(dir, "kernel", &ctr[i].kernel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) oprofilefs_create_ulong(dir, "user", &ctr[i].user);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) oprofilefs_create_ulong(dir, "unit_mask", &ctr[i].unit_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (model->can_set_proc_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) oprofilefs_create_ulong(root, "enable_pal",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) &sys.enable_pal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) oprofilefs_create_ulong(root, "enable_kernel",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) &sys.enable_kernel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) oprofilefs_create_ulong(root, "enable_user",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) &sys.enable_user);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) oprofile_arch_init(struct oprofile_operations *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct op_axp_model *lmodel = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) switch (implver()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) case IMPLVER_EV4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) lmodel = &op_model_ev4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) case IMPLVER_EV5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /* 21164PC has a slightly different set of events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) Recognize the chip by the presence of the MAX insns. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (!amask(AMASK_MAX))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) lmodel = &op_model_pca56;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) lmodel = &op_model_ev5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) case IMPLVER_EV6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* 21264A supports ProfileMe.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) Recognize the chip by the presence of the CIX insns. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (!amask(AMASK_CIX))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) lmodel = &op_model_ev67;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) lmodel = &op_model_ev6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (!lmodel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) model = lmodel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) ops->create_files = op_axp_create_files;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) ops->setup = op_axp_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) ops->shutdown = op_axp_shutdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) ops->start = op_axp_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) ops->stop = op_axp_stop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ops->cpu_type = lmodel->cpu_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) lmodel->cpu_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) oprofile_arch_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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