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Also declare support for APERF/MPERF during the BIOS _PDC/_OSC query.

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This commit is contained in:
jruoho 2011-02-25 16:54:36 +00:00
parent da73d5bcb9
commit 66d1c2c3a5
1 changed files with 16 additions and 4 deletions
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20
sys/arch/x86/acpi/acpi_cpu_md.c
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@ -1,4 +1,4 @@
/* $NetBSD: acpi_cpu_md.c,v 1.43 2011/02/25 12:08:35 jruoho Exp $ */
/* $NetBSD: acpi_cpu_md.c,v 1.44 2011/02/25 16:54:36 jruoho Exp $ */
/*-
* Copyright (c) 2010, 2011 Jukka Ruohonen <jruohonen@iki.fi>
@ -27,7 +27,7 @@
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_md.c,v 1.43 2011/02/25 12:08:35 jruoho Exp $");
__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_md.c,v 1.44 2011/02/25 16:54:36 jruoho Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -122,6 +122,7 @@ uint32_t
acpicpu_md_cap(void)
{
struct cpu_info *ci = curcpu();
uint32_t regs[4];
uint32_t val = 0;
if (cpu_vendor != CPUVENDOR_IDT &&
@ -149,6 +150,17 @@ acpicpu_md_cap(void)
if ((ci->ci_feat_val[0] & CPUID_ACPI) != 0)
val |= ACPICPU_PDC_T_FFH;
/*
* Declare support for APERF and MPERF.
*/
if (cpuid_level >= 0x06) {
x86_cpuid(0x00000006, regs);
if ((regs[2] & CPUID_DSPM_HWF) != 0)
val |= ACPICPU_PDC_P_HW;
}
return val;
}
@ -212,7 +224,7 @@ acpicpu_md_flags(void)
*/
if (cpuid_level >= 0x06) {
x86_cpuid(0x06, regs);
x86_cpuid(0x00000006, regs);
if ((regs[2] & CPUID_DSPM_HWF) != 0)
val |= ACPICPU_FLAG_P_HW;
@ -300,7 +312,7 @@ acpicpu_md_flags(void)
x86_cpuid(0x00000006, regs);
if ((regs[2] & __BIT(0)) != 0)
if ((regs[2] & CPUID_DSPM_HWF) != 0)
val |= ACPICPU_FLAG_P_HW;
}