/* $OpenBSD: procfs_machdep.c,v 1.6 2006/12/20 17:50:40 gwk Exp $ */
/* $NetBSD: procfs_machdep.c,v 1.6 2001/02/21 21:39:59 jdolecek Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Frank van der Linden for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <miscfs/procfs/procfs.h>
#include <machine/cpu.h>
#include <machine/cpufunc.h>
#include <machine/specialreg.h>
extern int i386_fpu_present, i386_fpu_exception, i386_fpu_fdivbug;
static const char * const i386_features[] = {
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe"
};
/*
* Linux-style /proc/cpuinfo.
* Only used when procfs is mounted with -o linux.
*
* In the multiprocessor case, this should be a loop over all CPUs.
*/
int
procfs_getcpuinfstr(char *buf, int *len)
{
int left, l, i;
char featurebuf[256], *p;
p = featurebuf;
left = sizeof featurebuf;
for (i = 0; i < 32; i++) {
if ((cpu_feature & (1 << i)) && i386_features[i]) {
l = snprintf(p, left, "%s ", i386_features[i]);
if (l == -1)
l = 0;
else if (l >= left)
l = left - 1;
left -= l;
p += l;
if (left <= 0)
break;
}
}
p = buf;
left = *len;
l = snprintf(p, left,
"processor\t: %d\n"
"vendor_id\t: %s\n"
"cpu family\t: %d\n"
"model\t\t: %d\n"
"model name\t: %s\n"
"stepping\t: ",
0,
cpu_vendor,
cpuid_level >= 0 ? ((cpu_id >> 8) & 15) : cpu_class + 3,
cpuid_level >= 0 ? ((cpu_id >> 4) & 15) : 0,
cpu_model
);
if (l == -1)
l = 0;
else if (l >= left)
l = left - 1;
left -= l;
p += l;
if (left <= 0)
return 0;
if (cpuid_level >= 0)
l = snprintf(p, left, "%d\n", cpu_id & 15);
else
l = snprintf(p, left, "unknown\n");
if (l == -1)
l = 0;
else if (l >= left)
l = left - 1;
left -= l;
p += l;
if (left <= 0)
return 0;
#if defined(I586_CPU) || defined(I686_CPU)
if (cpuspeed != 0)
l = snprintf(p, left, "cpu MHz\t\t: %d\n",
cpuspeed);
else
#endif
l = snprintf(p, left, "cpu MHz\t\t: unknown\n");
if (l == -1)
l = 0;
else if (l >= left)
l = left - 1;
left -= l;
p += l;
if (left <= 0)
return 0;
l = snprintf(p, left,
"fdiv_bug\t: %s\n"
"fpu\t\t: %s\n"
"fpu_exception:\t: %s\n"
"cpuid level\t: %d\n"
"wp\t\t: %s\n"
"flags\t\t: %s\n",
i386_fpu_fdivbug ? "yes" : "no",
i386_fpu_present ? "yes" : "no",
i386_fpu_exception ? "yes" : "no",
cpuid_level,
(rcr0() & CR0_WP) ? "yes" : "no",
featurebuf);
if (l == -1)
l = 0;
else if (l >= left)
l = left - 1;
*len = (p + l) - buf;
return 0;
}