Author: jkim
Date: Tue Oct 21 00:44:05 2008
New Revision: 184103
URL: http://svn.freebsd.org/changeset/base/184103
Log:
Use power management information for AMD CPUs from identcpu.c.
Modified:
head/sys/i386/cpufreq/powernow.c
Modified: head/sys/i386/cpufreq/powernow.c
==============================================================================
--- head/sys/i386/cpufreq/powernow.c Tue Oct 21 00:38:00 2008
(r184102)
+++ head/sys/i386/cpufreq/powernow.c Tue Oct 21 00:44:05 2008
(r184103)
@@ -758,22 +758,6 @@ pn_decode_pst(device_t dev)
return (ENODEV);
}
-/*
- * TODO: this should be done in sys/ARCH/ARCH/identcpu.c
- */
-static int
-cpu_is_powernow_capable(void)
-{
- u_int regs[4];
-
- if (strcmp(cpu_vendor, "AuthenticAMD") != 0 ||
- cpu_exthigh < 0x80000007)
- return (FALSE);
-
- do_cpuid(0x80000007, regs);
- return (regs[3] & 0x6);
-}
-
static int
pn_decode_acpi(device_t dev, device_t perf_dev)
{
@@ -883,7 +867,7 @@ pn_identify(driver_t *driver, device_t p
{
device_t child;
- if (cpu_is_powernow_capable() == 0)
+ if ((amd_pminfo & (AMDPM_FID | AMDPM_VID)) == 0)
return;
switch (cpu_id & 0xf00) {
case 0x600:
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