* cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available
@ 2002-10-26 8:56 Marc Giger
2002-10-28 11:15 ` Ducrot Bruno
[not found] ` <12722.1035652076@www50.gmx.net>
0 siblings, 2 replies; 6+ messages in thread
From: Marc Giger @ 2002-10-26 8:56 UTC (permalink / raw)
To: linux-kernel
Hi list, Hi Dominik
Why is cpufreq on my laptop not available? I know it works with window$.
My laptop has an Intel P3 speedstep cpu which supports 600Mhz and 500Mhz clock frequency. Will it be supported in the future?
Some additional infos:
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 3
cpu MHz : 595.577
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips : 1189.47
lspci -v
00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
Subsystem: Sony Corporation: Unknown device 806f
Flags: bus master, medium devsel, latency 64
Memory at 40000000 (32-bit, prefetchable) [size=16M]
Capabilities: [a0] AGP version 1.0
00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 128
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
Memory behind bridge: fe800000-fecfffff
Prefetchable memory behind bridge: fd000000-fdffffff
00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
Flags: bus master, medium devsel, latency 0
00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 80 [Master])
Flags: bus master, medium devsel, latency 64
I/O ports at fc90 [size=16]
00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01) (prog-if 00 [UHCI])
Flags: bus master, medium devsel, latency 64, IRQ 9
I/O ports at fca0 [size=32]
00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 03)
Flags: medium devsel, IRQ 9
00:08.0 FireWire (IEEE 1394): Sony Corporation CXD3222 i.LINK Controller (rev 02) (prog-if 10 [OHCI])
Subsystem: Sony Corporation: Unknown device 8071
Flags: bus master, medium devsel, latency 64, IRQ 9
Memory at fedf7000 (32-bit, non-prefetchable) [size=2K]
Memory at fedf7c00 (32-bit, non-prefetchable) [size=512]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [dc] Power Management version 1
00:09.0 Multimedia audio controller: Yamaha Corporation YMF-744B [DS-1S Audio Controller] (rev 02)
Subsystem: Sony Corporation: Unknown device 8072
Flags: bus master, medium devsel, latency 64, IRQ 9
Memory at fedf8000 (32-bit, non-prefetchable) [size=32K]
I/O ports at fcc0 [size=64]
I/O ports at fc8c [size=4]
Capabilities: [50] Power Management version 1
00:0a.0 Communication controller: Conexant HSF 56k Data/Fax Modem (Mob WorldW SmartDAA) (rev 01)
Subsystem: Sony Corporation Modem
Flags: medium devsel, IRQ 9
Memory at fede0000 (32-bit, non-prefetchable) [size=64K]
I/O ports at fc78 [size=8]
Capabilities: [40] Power Management version 2
00:0c.0 CardBus bridge: Ricoh Co Ltd RL5c478 (rev 80)
Subsystem: Sony Corporation: Unknown device 8073
Flags: bus master, medium devsel, latency 168, IRQ 9
Memory at 10000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=02, subordinate=05, sec-latency=176
Memory window 0: 10400000-107ff000 (prefetchable)
Memory window 1: 10800000-10bff000
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
16-bit legacy interface ports at 0001
00:0c.1 CardBus bridge: Ricoh Co Ltd RL5c478 (rev 80)
Subsystem: Sony Corporation: Unknown device 8073
Flags: bus master, medium devsel, latency 168, IRQ 9
Memory at 10001000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=06, subordinate=09, sec-latency=176
Memory window 0: 10c00000-10fff000 (prefetchable)
Memory window 1: 11000000-113ff000
I/O window 0: 00004800-000048ff
I/O window 1: 00004c00-00004cff
16-bit legacy interface ports at 0001
01:00.0 VGA compatible controller: Neomagic Corporation [MagicMedia 256AV+] (rev 30) (prog-if 00 [VGA])
Subsystem: Sony Corporation: Unknown device 80a2
Flags: bus master, fast Back2Back, medium devsel, latency 128, IRQ 9
Memory at fd000000 (32-bit, prefetchable) [size=16M]
Memory at fe800000 (32-bit, non-prefetchable) [size=4M]
Memory at fec00000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [dc] Power Management version 1
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. RT8139
Flags: bus master, medium devsel, latency 64, IRQ 9
I/O ports at 4800 [size=256]
Memory at 11000000 (32-bit, non-prefetchable) [size=512]
Capabilities: [50] Power Management version 2
Thank you
Kind regards
Marc
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available
2002-10-26 8:56 cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available Marc Giger
@ 2002-10-28 11:15 ` Ducrot Bruno
[not found] ` <12722.1035652076@www50.gmx.net>
1 sibling, 0 replies; 6+ messages in thread
From: Ducrot Bruno @ 2002-10-28 11:15 UTC (permalink / raw)
To: Marc Giger; +Cc: linux-kernel
On Sat, Oct 26, 2002 at 10:56:11AM +0200, Marc Giger wrote:
> Hi list, Hi Dominik
>
> Why is cpufreq on my laptop not available? I know it works with window$.
> My laptop has an Intel P3 speedstep cpu which supports 600Mhz and 500Mhz clock frequency. Will it be supported in the future?
>
> Some additional infos:
>
Ask Intel. There is _no_ technical informations from Intel
about their SpeedStep technology. All is done for now by guessing,
reverse engeenering, etc. Only a subset of chipsets can
work for now, and you do not have the one that cpufreq support.
I heard also that it could work soon, but absolutely nothing
is guarantied if Intel continue to withhold their
documentations. You can join cpufreq mailing list if
you want to help on this topic.
Cheers,
--
Ducrot Bruno
http://www.poupinou.org Page profaissionelle
http://toto.tu-me-saoules.com Haume page
^ permalink raw reply [flat|nested] 6+ messages in thread[parent not found: <12722.1035652076@www50.gmx.net>]
* Re: cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available
[not found] ` <12722.1035652076@www50.gmx.net>
@ 2002-10-28 15:29 ` Dominik Brodowski
2002-10-28 15:04 ` Marc Giger
0 siblings, 1 reply; 6+ messages in thread
From: Dominik Brodowski @ 2002-10-28 15:29 UTC (permalink / raw)
To: Marc Giger, linux-kernel; +Cc: ducrot
[-- Attachment #1: Type: text/plain, Size: 1133 bytes --]
Hi Marc,
> Why is cpufreq on my laptop not available? I know it works with window$.
> My laptop has an Intel P3 speedstep cpu which supports 600Mhz and 500Mhz
> clock frequency. Will it be supported in the future?
>
> CPU model name : Pentium III (Coppermine)
>
> 00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
There's a small bug in speedstep.c which causes the initialization process
to fail on all Coppermines. A fix for this had been sent to Linus already;
it's also attached.
Unfortunately, this won't change much on your notebook. Now the line in
dmesg will say "Intel SpeedStep for this chipset not (yet) available." as
Intel continues to withhold information on how to use SpeedStep on 440BX/MX
chipsets (and even removes documentation which had been publicly available on
their servers). However, in an effort mainly lead by Bruno Ducrot,
reverse-engineering is making progress. SpeedStep already works on some
440BX/MX based notebooks, on others -like the one I'm using- it's still a
mystery.
During the next days, I'll make a patch and further information available.
Dominik
[-- Attachment #2: cpufreq-2.5.44-i386-speedstep-1 --]
[-- Type: text/plain, Size: 2032 bytes --]
diff -ruN linux-2543original/arch/i386/kernel/cpu/cpufreq/speedstep.c linux/arch/i386/kernel/cpu/cpufreq/speedstep.c
--- linux-2543original/arch/i386/kernel/cpu/cpufreq/speedstep.c Wed Oct 9 00:44:45 2002
+++ linux/arch/i386/kernel/cpu/cpufreq/speedstep.c Thu Oct 17 15:52:49 2002
@@ -1,5 +1,5 @@
/*
- * $Id: speedstep.c,v 1.53 2002/09/29 23:43:11 db Exp $
+ * $Id: speedstep.c,v 1.54 2002/10/10 15:52:55 db Exp $
*
* (C) 2001 Dave Jones, Arjan van de ven.
* (C) 2002 Dominik Brodowski <linux@brodo.de>
@@ -72,7 +72,7 @@
#ifdef SPEEDSTEP_DEBUG
#define dprintk(msg...) printk(msg)
#else
-#define dprintk(msg...) do { } while(0);
+#define dprintk(msg...) do { } while(0)
#endif
@@ -490,14 +490,14 @@
/* platform ID seems to be 0x00140000 */
rdmsr(MSR_IA32_PLATFORM_ID, msr_lo, msr_hi);
dprintk(KERN_DEBUG "cpufreq: Coppermine: MSR_IA32_PLATFORM ID is 0x%x, 0x%x\n", msr_lo, msr_hi);
- msr_hi = msr_lo & 0x001c0000;
- if (msr_hi != 0x00140000)
+ msr_lo = msr_hi & 0x001c0000;
+ if (msr_lo != 0x00140000)
return 0;
/* and these bits seem to be either 00_b, 01_b or
* 10_b but never 11_b */
- msr_lo &= 0x00030000;
- if (msr_lo == 0x0030000)
+ msr_hi &= 0x00030000;
+ if (msr_hi == 0x0030000)
return 0;
/* let's hope this is correct... */
@@ -644,11 +644,11 @@
speedstep_processor = speedstep_detect_processor();
if ((!speedstep_chipset) || (!speedstep_processor)) {
- dprintk(KERN_INFO "cpufreq: Intel(R) SpeedStep(TM) for this %s not (yet) available.\n", speedstep_processor ? "chipset" : "processor");
+ printk(KERN_INFO "cpufreq: Intel(R) SpeedStep(TM) for this %s not (yet) available.\n", speedstep_processor ? "chipset" : "processor");
return -ENODEV;
}
- dprintk(KERN_INFO "cpufreq: Intel(R) SpeedStep(TM) support $Revision: 1.53 $\n");
+ dprintk(KERN_INFO "cpufreq: Intel(R) SpeedStep(TM) support $Revision: 1.54 $\n");
dprintk(KERN_DEBUG "cpufreq: chipset 0x%x - processor 0x%x\n",
speedstep_chipset, speedstep_processor);
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available
2002-10-28 15:29 ` Dominik Brodowski
@ 2002-10-28 15:04 ` Marc Giger
2002-10-28 15:12 ` Ducrot Bruno
2002-10-28 15:25 ` Dave Jones
0 siblings, 2 replies; 6+ messages in thread
From: Marc Giger @ 2002-10-28 15:04 UTC (permalink / raw)
To: Dominik Brodowski; +Cc: linux-kernel, ducrot
Hi Dominik, Hi Bruno!
Thank you for the information!
> Intel continues to withhold information on how to use SpeedStep on
> 440BX/MX chipsets (and even removes documentation which had been > publicly available ontheir servers)
I thought Intel is interessted in Linux and want to support it????
I'm willing to help you with tests if you want, so that the 440BX chipset will be supported.
Thank's
Marc
On Mon, 28 Oct 2002 16:29:33 +0100
Dominik Brodowski <linux@brodo.de> wrote:
> Hi Marc,
>
> > Why is cpufreq on my laptop not available? I know it works with window$.
> > My laptop has an Intel P3 speedstep cpu which supports 600Mhz and 500Mhz
> > clock frequency. Will it be supported in the future?
> >
> > CPU model name : Pentium III (Coppermine)
> >
> > 00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
>
> There's a small bug in speedstep.c which causes the initialization process
> to fail on all Coppermines. A fix for this had been sent to Linus already;
> it's also attached.
>
> Unfortunately, this won't change much on your notebook. Now the line in
> dmesg will say "Intel SpeedStep for this chipset not (yet) available." as
> Intel continues to withhold information on how to use SpeedStep on 440BX/MX
> chipsets (and even removes documentation which had been publicly available on
> their servers). However, in an effort mainly lead by Bruno Ducrot,
> reverse-engineering is making progress. SpeedStep already works on some
> 440BX/MX based notebooks, on others -like the one I'm using- it's still a
> mystery.
>
> During the next days, I'll make a patch and further information available.
>
> Dominik
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available
2002-10-28 15:04 ` Marc Giger
@ 2002-10-28 15:12 ` Ducrot Bruno
2002-10-28 15:25 ` Dave Jones
1 sibling, 0 replies; 6+ messages in thread
From: Ducrot Bruno @ 2002-10-28 15:12 UTC (permalink / raw)
To: Marc Giger; +Cc: Dominik Brodowski, linux-kernel, ducrot
On Mon, Oct 28, 2002 at 04:04:10PM +0100, Marc Giger wrote:
> Hi Dominik, Hi Bruno!
>
> Thank you for the information!
>
> > Intel continues to withhold information on how to use SpeedStep on
> > 440BX/MX chipsets (and even removes documentation which had been > publicly available ontheir servers)
>
> I thought Intel is interessted in Linux and want to support it????
>
> I'm willing to help you with tests if you want, so that the 440BX chipset will be supported.
>
I don't know why Intel do not want to release informations on their
speedstep technology. I think that this is more likely a 'marketing'
issue, or something like that. I don't think that their techs
want to withhold the specs for a proper support on SpeedStep
under linux, or other free OS, also, and hope that one day
Intel will release proper docs. Well, we can dream...
--
Ducrot Bruno
http://www.poupinou.org Page profaissionelle
http://toto.tu-me-saoules.com Haume page
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available
2002-10-28 15:04 ` Marc Giger
2002-10-28 15:12 ` Ducrot Bruno
@ 2002-10-28 15:25 ` Dave Jones
1 sibling, 0 replies; 6+ messages in thread
From: Dave Jones @ 2002-10-28 15:25 UTC (permalink / raw)
To: Marc Giger; +Cc: Dominik Brodowski, linux-kernel, ducrot
On Mon, Oct 28, 2002 at 04:04:10PM +0100, Marc Giger wrote:
> Hi Dominik, Hi Bruno!
>
> Thank you for the information!
>
> > Intel continues to withhold information on how to use SpeedStep on
> > 440BX/MX chipsets (and even removes documentation which had been > publicly available ontheir servers)
>
> I thought Intel is interessted in Linux and want to support it????
Depends which Intel you talk to 8-)
Dave
--
| Dave Jones. http://www.codemonkey.org.uk
^ permalink raw reply [flat|nested] 6+ messages in thread
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2002-10-26 8:56 cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available Marc Giger
2002-10-28 11:15 ` Ducrot Bruno
[not found] ` <12722.1035652076@www50.gmx.net>
2002-10-28 15:29 ` Dominik Brodowski
2002-10-28 15:04 ` Marc Giger
2002-10-28 15:12 ` Ducrot Bruno
2002-10-28 15:25 ` Dave Jones
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