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Use the already stored VIA RNG probe information

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instead of probing again.

MFC after:	1 week
This commit is contained in:
Michael Reifenberger 2006-07-12 20:29:11 +00:00
parent 56eeb277cb
commit 243d8ac855
1 changed files with 4 additions and 13 deletions
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17
sys/dev/random/probe.c
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@ -39,6 +39,8 @@ __FBSDID("$FreeBSD$");
#if defined(__i386__) && !defined(PC98)
#include <machine/cpufunc.h>
#include <machine/cputypes.h>
#include <machine/md_var.h>
#include <machine/specialreg.h>
#endif
#include <dev/random/randomdev.h>
@ -48,25 +50,14 @@ __FBSDID("$FreeBSD$");
void
random_ident_hardware(struct random_systat *systat)
{
#if defined(__i386__) && !defined(PC98)
u_int regs[4];
#endif
/* Set default to software */
*systat = random_yarrow;
/* Then go looking for hardware */
#if defined(__i386__) && !defined(PC98)
if (cpu_class < CPUCLASS_586)
return;
do_cpuid(1, regs);
if ((regs[0] & 0xf) >= 3) {
do_cpuid(0xc0000000, regs);
if (regs[0] == 0xc0000001) {
do_cpuid(0xc0000001, regs);
if ((regs[3] & 0x0c) == 0x0c)
*systat = random_nehemiah;
}
if( via_feature_rng & VIA_HAS_RNG ) {
*systat = random_nehemiah;
}
#endif
}