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After reading up a bit in the ia32 system architecture manual, take 

a shot at enabling thermal monitoring.  On a Dell MP Xeon here, the
BIOS leaves the CPU out of spec. by not enabling thermal monitoring
at all.  It looks like this code is not properly handling TM2 for
P-4 systems.  Pentium-D and Pentium-4 systems enable TM2 differently.
I'm not sufficiently clued-up to deal with that at the moment.
This commit is contained in:
briggs 2006-03-20 05:21:27 +00:00
parent 5cefc5aa01
commit a8fffa1ddf
1 changed files with 13 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
sys/arch/i386/i386/identcpu.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: identcpu.c,v 1.29 2006/02/19 14:59:22 thorpej Exp $ */
/* $NetBSD: identcpu.c,v 1.30 2006/03/20 05:21:27 briggs Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.29 2006/02/19 14:59:22 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.30 2006/03/20 05:21:27 briggs Exp $");
#include "opt_cputype.h"
#include "opt_enhanced_speedstep.h"
@ -1313,9 +1313,18 @@ identifycpu(struct cpu_info *ci)
else
aprint_normal("%s: using thermal monitor 1\n",
cpuname);
} else
aprint_normal("%s: running without thermal monitor!\n",
} else {
aprint_normal("%s: enabling thermal monitor 1 ... ",
cpuname);
wrmsr(MSR_MISC_ENABLE, rdmsr(MSR_MISC_ENABLE) | (1<<3));
if (rdmsr(MSR_MISC_ENABLE) & (1 << 3)) {
aprint_normal("enabled.\n");
} else {
aprint_normal("failed!\n");
aprint_error("%s: failed to enable thermal "
"monitoring!\n", cpuname);
}
}
}
if (ci->ci_cpuid_level >= 3 && (ci->ci_feature_flags & CPUID_PN)) {