RE: 2.6.16.x CPUFREQ / SpeedStep-Centrino: couldn't enable EnchancedSpeedStep

RE: 2.6.16.x CPUFREQ / SpeedStep-Centrino: couldn't enable EnchancedSpeedStep

[Pallipadi, Venkatesh]

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Hmmm.. Looks like BIOS is giving bogus PSS information and as there is
one valid ACPI P-state we are not falling back to hardcoded tables.
Attached patch will tell what is the PSS information that BIOS is giving
to OS.

Also, you can try disabling CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI and see
whether the hardcoded tables works for you.

Thanks,
Venki 

>-----Original Message-----
>From: cpufreq-bounces@lists.linux.org.uk 
>[mailto:cpufreq-bounces@lists.linux.org.uk] On Behalf Of Ben Kevan
>Sent: Tuesday, June 20, 2006 1:32 PM
>To: Jeremy Fitzhardinge
>Cc: cpufreq@lists.linux.org.uk; Bruno Ducrot; linux@brodo.de
>Subject: Re: 2.6.16.x CPUFREQ / SpeedStep-Centrino: couldn't 
>enable EnchancedSpeedStep
>
>On Tuesday 20 June 2006 11:07, Jeremy Fitzhardinge wrote:
>> Bruno Ducrot wrote:
>> > That's strange.  Even if there is no processor object 
>declared onto ACPI
>> > tables it should work with 
>CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE set since
>> > it's a bania.
>>
>> This message specifically means that the CPU isn't allowing EST to be
>> enabled, even though the CPU has the capability.  I think 
>the BIOS can
>> lock this down, like VT on later processors.  Though I can't imagine
>> why, unless the machine is being sold as a cheaper/slower system than
>> the CPU they put in it...
>>
>> What does the SMM patch do?
>>
>>     J
>
>I patched my kernel with Bruno's suggestion but that did not 
>change anything. 
>I guess from looking at it, I should get a Kernel Error Message 
>with "notifying SMM bios failed" message. I will check the 
>logs (It is on a 
>seperate HDD for this same machine (need to keep my production 
>machine up and 
>clean). 
>
>I have installed 2.6.17 and compiled with the cpufreq debug, 
>and here is the 
>portion of dmesg I am sure you are intrested in:
>
>Netfilter messages via NETLINK v0.30.
>ip_conntrack version 2.4 (8190 buckets, 65520 max) - 224 bytes 
>per conntrack
>ACPI: AC Adapter [ADP1] (on-line)
>ACPI: Battery Slot [BAT1] (battery present)
>ACPI: Battery Slot [BAT2] (battery absent)
>ACPI: Power Button (FF) [PWRF]
>ACPI: Power Button (CM) [PWRB]
>ACPI: Lid Switch [LID]
>toshiba_acpi: Toshiba Laptop ACPI Extras version 0.18
>toshiba_acpi:     HCI method: \_SB_.VALD.GHCI
>BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
>audit(1150830156.185:2): audit_backlog_limit=256 old=64 by 
>auid=4294967295
>audit(1150830156.769:3): audit_pid=2432 old=0 by auid=4294967295
>IA-32 Microcode Update Driver: v1.14 <tigran@veritas.com>
>cpufreq-core: trying to register driver centrino
>cpufreq-core: adding CPU 0
>speedstep-centrino: P1 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P2 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P3 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P4 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P5 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P6 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P7 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P8 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P9 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P10 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P11 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P12 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P13 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P14 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: P15 has larger frequency (65535) than P0 
>(600), skipping
>speedstep-centrino: adding state 0 with frequency 600000 and 
>control value 
>0610
>speedstep-centrino: adding state 1 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 2 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 3 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 4 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 5 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 6 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 7 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 8 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 9 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 10 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 11 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 12 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 13 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 14 with frequency 0 and 
>control value ffff
>speedstep-centrino: adding state 15 with frequency 0 and 
>control value ffff
>speedstep-centrino: skipping state 1
>speedstep-centrino: skipping state 2
>speedstep-centrino: skipping state 3
>speedstep-centrino: skipping state 4
>speedstep-centrino: skipping state 5
>speedstep-centrino: skipping state 6
>speedstep-centrino: skipping state 7
>speedstep-centrino: skipping state 8
>speedstep-centrino: skipping state 9
>speedstep-centrino: skipping state 10
>speedstep-centrino: skipping state 11
>speedstep-centrino: skipping state 12
>speedstep-centrino: skipping state 13
>speedstep-centrino: skipping state 14
>speedstep-centrino: skipping state 15
>speedstep-centrino: trying to enable Enhanced SpeedStep (111088)
>speedstep-centrino: couldn't enable Enhanced SpeedStep
>cpufreq-core: initialization failed
>cpufreq-core: no CPU initialized for driver centrino
>cpufreq-core: unregistering CPU 0
>acpi-cpufreq: acpi_cpufreq_init
>cpufreq-core: trying to register driver acpi-cpufreq
>cpufreq-core: adding CPU 0
>acpi-cpufreq: acpi_cpufreq_cpu_init
>cpufreq-core: initialization failed
>cpufreq-core: no CPU initialized for driver acpi-cpufreq
>cpufreq-core: unregistering CPU 0
>speedstep-lib: x86: 6, model: 9
>speedstep-ich: Intel(R) SpeedStep(TM) capable processor not found
>e1000: eth0: e1000_watchdog_task: NIC Link is Up 100 Mbps Full Duplex
>NET: Registered protocol family 17
>
>Bruno / J, 
>
>What should I be looking for with the patched 
>speedstep-centrino.c? Where 
>would this message be? In my /var/log/messages or under 
>another log file? 
>
>Thanks for all your help?
>
>Ben
>
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>Cpufreq mailing list
>Cpufreq@lists.linux.org.uk
>http://lists.linux.org.uk/mailman/listinfo/cpufreq
>

[-- Attachment #2: acpi_pss_debug.patch --]
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253a254,255
> 	printk("Found %d performance states\n",
> 			  pss->package.count);
271a274
> 		printk("Extracting state %d\n", i);
282a286,292
> 		printk("State [%d]: core_frequency[%d] power[%d] transition_latency[%d] bus_master_latency[%d] control[0x%x] status[0x%x]\n",
> 				  i,
> 				  (u32) px->core_frequency,
> 				  (u32) px->power,
> 				  (u32) px->transition_latency,
> 				  (u32) px->bus_master_latency,
> 				  (u32) px->control, (u32) px->status);

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Re: 2.6.16.x CPUFREQ / SpeedStep-Centrino: couldn't enable EnchancedSpeedStep

[Jeremy Fitzhardinge]

Pallipadi, Venkatesh wrote:
> Also, you can try disabling CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI and see
> whether the hardcoded tables works for you.
>   
It's also failing because it can't set MSR_IA32_MISC_ENABLE, so it 
simply can't write to  MSR_IA32_PERF_CTL.

    J