Re: CPU C-state storange on Panasonic TOUGH BOOK CF-R9

Hi nate.

On Sat, 11 Sep 2010 11:30:29 -0700
Nate Lawson <nate_at_root.org> wrote:
> I think the issue is that C2 is not available for some reason and thus
> C3 can't be used either. The way to tell is to use acpidump and look for
> the CPU objects' _CST fields.

	I attached acpidump -dt (nork-CFR9.asl.bz2) on previous mail, and
	I couldn't find _CST, too.

	And I added more ACPI debug option, ACPI_DB_INFO.  I got following:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
cpu0: <ACPI CPU> on acpi0
PROCESSOR-0311 [230584] cpu_attach            : acpi_cpu0: P_BLK at 0x410/6
ACPI: SSDT 0xda9adc18 002AA (v01  PmRef  Cpu0Ist 00003000 INTL 20061109)
ACPI: Dynamic OEM Table Load:
ACPI: SSDT 0 002AA (v01  PmRef  Cpu0Ist 00003000 INTL 20061109)
ACPI: SSDT 0xda9ab618 005CD (v01  PmRef  Cpu0Cst 00003001 INTL 20061109)
ACPI: Dynamic OEM Table Load:
ACPI: SSDT 0 005CD (v01  PmRef  Cpu0Cst 00003001 INTL 20061109)
PROCESSOR-0696 [241753] cpu_cx_cst            : acpi_cpu0: C2[1] not available.
PROCESSOR-0730 [241753] cpu_cx_cst            : acpi_cpu0: Got C3 - 245 latency
cpu1: <ACPI CPU> on acpi0
PROCESSOR-0311 [241991] cpu_attach            : acpi_cpu1: P_BLK at 0x410/6
ACPI: SSDT 0xda9aca98 00303 (v01  PmRef    ApIst 00003000 INTL 20061109)
ACPI: Dynamic OEM Table Load:
ACPI: SSDT 0 00303 (v01  PmRef    ApIst 00003000 INTL 20061109)
ACPI: SSDT 0xda9aad98 00119 (v01  PmRef    ApCst 00003000 INTL 20061109)
ACPI: Dynamic OEM Table Load:
ACPI: SSDT 0 00119 (v01  PmRef    ApCst 00003000 INTL 20061109)
PROCESSOR-0696 [254000] cpu_cx_cst            : acpi_cpu1: C2[1] not available.
PROCESSOR-0730 [254000] cpu_cx_cst            : acpi_cpu1: Got C3 - 245 latency
cpu2: <ACPI CPU> on acpi0
PROCESSOR-0311 [254238] cpu_attach            : acpi_cpu2: P_BLK at 0x410/6
PROCESSOR-0696 [255657] cpu_cx_cst            : acpi_cpu2: C2[1] not available.
PROCESSOR-0730 [255657] cpu_cx_cst            : acpi_cpu2: Got C3 - 245 latency
cpu3: <ACPI CPU> on acpi0
PROCESSOR-0311 [255895] cpu_attach            : acpi_cpu3: P_BLK at 0x410/6
PROCESSOR-0696 [257314] cpu_cx_cst            : acpi_cpu3: C2[1] not available.
PROCESSOR-0730 [257314] cpu_cx_cst            : acpi_cpu3: Got C3 - 245 latency
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	According to acpidump -dt, I could find CPU0CST table, but
	not found _CST.
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    Scope (\)
    {
        Name (SSDT, Package (0x0C)
        {
		:
            "CPU0CST ", 
            0xDA9AB618, 
            0x000005CD, 
		:
        })
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	Hum... ACPI CA 20100806 has a bug?

	Thank you.

-- 
Norikatsu Shigemura <nork_at_FreeBSD.org>