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| author | jruoho <jruoho@NetBSD.org> | 2011-08-06 13:19:46 +0000 |
|---|---|---|
| committer | jruoho <jruoho@NetBSD.org> | 2011-08-06 13:19:46 +0000 |
| commit | 856baca048d023a9ebc8981d8173ecfbaae6f2db (patch) | |
| tree | fbd2023787b01babe81b6692480d25dbc35adf77 /sys/dev | |
| parent | 6f96bdabeb3f7a79bf3ff2f3550253c1c36daf04 (diff) | |
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Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/acpi/acpi_cpu_cstate.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sys/dev/acpi/acpi_cpu_cstate.c b/sys/dev/acpi/acpi_cpu_cstate.c index b86526be5e0..2fa59764361 100644 --- a/sys/dev/acpi/acpi_cpu_cstate.c +++ b/sys/dev/acpi/acpi_cpu_cstate.c @@ -1,4 +1,4 @@ -/* $NetBSD: acpi_cpu_cstate.c,v 1.56 2011/08/05 02:29:53 mrg Exp $ */ +/* $NetBSD: acpi_cpu_cstate.c,v 1.57 2011/08/06 13:19:46 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_cstate.c,v 1.56 2011/08/05 02:29:53 mrg Exp $"); +__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_cstate.c,v 1.57 2011/08/06 13:19:46 jruoho Exp $"); #include <sys/param.h> #include <sys/cpu.h> @@ -556,9 +556,13 @@ acpicpu_cstate_fadt(struct acpicpu_softc *sc) cs[ACPI_STATE_C3].cs_method = 0; /* - * Sanity check the latency levels in FADT. - * Values above the thresholds are used to - * inform that C-states are not supported. + * Sanity check the latency levels in FADT. Values above + * the thresholds may be used to inform that C2 and C3 are + * not supported -- AMD family 11h is an example; + * + * Advanced Micro Devices: BIOS and Kernel Developer's + * Guide (BKDG) for AMD Family 11h Processors. Section + * 2.4.3, Revision 3.00, July, 2008. */ CTASSERT(ACPICPU_C_C2_LATENCY_MAX == 100); CTASSERT(ACPICPU_C_C3_LATENCY_MAX == 1000); |
