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Keep track of the CPU's current speed (in kHz) in the cpu info structure, 

if we can get it.  May want to expand this in the future to include min
and max speeds for systems where we can adjust the speed.
This commit is contained in:
briggs 2005-02-03 14:47:09 +00:00
parent 19b7469a00
commit d6e37f352e
2 changed files with 12 additions and 7 deletions
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3
sys/arch/powerpc/include/cpu.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: cpu.h,v 1.43 2005/01/19 22:22:56 matt Exp $ */
/* $NetBSD: cpu.h,v 1.44 2005/02/03 14:47:09 briggs Exp $ */
/*
* Copyright (C) 1999 Wolfgang Solfrank.
@ -94,6 +94,7 @@ struct cpu_info {
struct cache_info ci_ci;
void *ci_sysmon_cookie;
void (*ci_idlespin)(void);
uint32_t ci_khz;
struct evcnt ci_ev_clock; /* clock intrs */
struct evcnt ci_ev_softclock; /* softclock intrs */
struct evcnt ci_ev_softnet; /* softnet intrs */

16
sys/arch/powerpc/oea/cpu_subr.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: cpu_subr.c,v 1.22 2005/01/21 00:58:34 matt Exp $ */
/* $NetBSD: cpu_subr.c,v 1.23 2005/02/03 14:47:09 briggs Exp $ */
/*-
* Copyright (c) 2001 Matt Thomas.
@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.22 2005/01/21 00:58:34 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.23 2005/02/03 14:47:09 briggs Exp $");
#include "opt_ppcparam.h"
#include "opt_multiprocessor.h"
@ -58,7 +58,7 @@ static void cpu_enable_l2cr(register_t);
static void cpu_enable_l3cr(register_t);
static void cpu_config_l2cr(int);
static void cpu_config_l3cr(int);
static void cpu_print_speed(void);
static void cpu_probe_speed(struct cpu_info *);
static void cpu_idlespin(void);
#if NSYSMON_ENVSYS > 0
static void cpu_tau_setup(struct cpu_info *);
@ -479,6 +479,8 @@ cpu_setup(self, ci)
bitmask_snprintf(hid0, bitmask, hidbuf, sizeof hidbuf);
aprint_normal("%s: HID0 %s\n", self->dv_xname, hidbuf);
ci->ci_khz = 0;
/*
* Display speed and cache configuration.
*/
@ -496,7 +498,9 @@ cpu_setup(self, ci)
case MPC7455:
case MPC7457:
aprint_normal("%s: ", self->dv_xname);
cpu_print_speed();
cpu_probe_speed(ci);
aprint_normal("%u.%02u MHz",
ci->ci_khz / 1000, (ci->ci_khz / 10) % 100);
if (vers == IBM750FX || vers == MPC750 ||
vers == MPC7400 || vers == MPC7410 || MPC745X_P(vers)) {
@ -822,7 +826,7 @@ cpu_config_l3cr(int vers)
}
void
cpu_print_speed(void)
cpu_probe_speed(struct cpu_info *ci)
{
uint64_t cps;
@ -834,7 +838,7 @@ cpu_print_speed(void)
mtspr(SPR_MMCR0, MMCR0_FC);
aprint_normal("%lld.%02lld MHz", cps / 1000000, (cps / 10000) % 100);
ci->ci_khz = cps / 1000;
}
#if NSYSMON_ENVSYS > 0