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Date: Sun, 12 Sep 2010 21:01:53 +0900
From: Norikatsu Shigemura <nork@FreeBSD.org>
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Cc: Alexander Motin <mav@FreeBSD.org>, Andriy Gapon <avg@icyb.net.ua>,
	Norikatsu Shigemura <nork@FreeBSD.org>
Subject: Re: CPU C-state storange on Panasonic TOUGH BOOK CF-R9
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Hi.

On Sun, 12 Sep 2010 20:26:07 +0900
Norikatsu Shigemura <nork@FreeBSD.org> wrote:
> 	Humm.. Why only C3 state appear when unplug power? :-(

	Ah, I got it.  Every times, evaluating _CST on acpi_cpu_cx_cst,
	and _CST is a black box because I couldn't see _CST.  Maybe,
	_CST look at AC status.

	So I think that following patch is OK.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
--- sys/dev/acpica/acpi_cpu.c.orig	2010-09-12 01:31:38.144243000 +0900
+++ sys/dev/acpica/acpi_cpu.c	2010-09-12 20:53:49.252917961 +0900
@@ -690,19 +690,11 @@
 	    sc->cpu_cx_count++;
 	    continue;
 	case ACPI_STATE_C2:
-	    if (cx_ptr->trans_lat > 100) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				 "acpi_cpu%d: C2[%d] not available.\n",
-				 device_get_unit(sc->cpu_dev), i));
-		continue;
-	    }
 	    sc->cpu_non_c3 = i;
 	    break;
 	case ACPI_STATE_C3:
 	default:
-	    if (cx_ptr->trans_lat > 1000 ||
-		(cpu_quirks & CPU_QUIRK_NO_C3) != 0) {
-
+	    if (cpu_quirks & CPU_QUIRK_NO_C3) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				 "acpi_cpu%d: C3[%d] not available.\n",
 				 device_get_unit(sc->cpu_dev), i));
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	Thank you.

-- 
Norikatsu Shigemura <nork@FreeBSD.org>