Commit Graph

52 Commits

Author SHA1 Message Date
Jean Delvare 808b4e639e hwmon: (coretemp) Drop unused struct members
pdev_entry.cpu and pdev_entry.cpu_core_id aren't used anywhere in the
driver code so we can drop these struct members.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-06-17 23:22:26 -07:00
Guenter Roeck bb9973e4e7 hwmon: (coretemp) Further relax temperature range checks
Further relax temperature range checks after reading the IA32_TEMPERATURE_TARGET
register. If the register returns a value other than 0 in bits 16..32, assume
that the returned value is correct.

This change applies to both packet and core temperature limits.

Cc: Carsten Emde <C.Emde@osadl.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
2011-06-01 20:10:40 -07:00
Guenter Roeck 4f5f71a7ab hwmon: (coretemp) Fix TjMax detection for older CPUs
Commit a321cedb12 excludes CPU models 0xe, 0xf,
0x16, and 0x1a from TjMax temperature adjustment, even though several of those
CPUs are known to have TiMax other than 100 degrees C, and even though the code
in adjust_tjmax() explicitly handles those CPUs and points to a Web document
listing several of the affected CPU IDs.

Reinstate original TjMax adjustment if TjMax can not be determined using the
IA32_TEMPERATURE_TARGET register.

https://bugzilla.kernel.org/show_bug.cgi?id=32582

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Huaxu Wan <huaxu.wan@linux.intel.com>
Cc: Carsten Emde <C.Emde@osadl.org>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Yong Wang <yong.y.wang@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Tested-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Cc: <stable@kernel.org> # .35.x .36.x .37.x .38.x .39.x
2011-06-01 20:10:31 -07:00
Jean Delvare 4c6e0f8101 hwmon: (coretemp) Relax target temperature range check
The current temperature range check of MSR_IA32_TEMPERATURE_TARGET
seems too strict to me, some TjMax values documented in
Documentation/hwmon/coretemp wouldn't pass. Relax the check so that
all the documented values pass.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Carsten Emde <C.Emde@osadl.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-06-01 11:11:28 -07:00
Jean Delvare 582e1b270f hwmon: (coretemp) Fix section mismatch
chk_ucode_version() is only called from coretemp_probe() which is
__devinit, so it can be marked __devinit too.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Durgadoss R <durgadoss.r@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-05-27 02:24:54 -07:00
Guenter Roeck 6777b9e47e hwmon: (coretemp) Update comments describing the handling of HT CPUs
Update comments describing the handling of HT CPUs based on review feedback.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Durgadoss R <durgadoss.r@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
2011-05-27 02:24:53 -07:00
Sergey Senozhatsky 4258781ac7 hwmon: (coretemp) Initialize sysfs attributes
Initialize sysfs attrs before device_create_file() call to suppress lockdep_init_map()
warning:

[    3.653628] WARNING: at kernel/lockdep.c:2885 lockdep_init_map+0xea/0x43c()
[    3.653698] Modules linked in:
[    3.654835] Pid: 1, comm: swapper Not tainted 2.6.39-dbg-git8-05624-g46187f8 #576
[    3.656014] Call Trace:
[    3.657139]  [<ffffffff8103e4b4>] warn_slowpath_common+0x7e/0x96
[    3.658298]  [<ffffffff8103e4e1>] warn_slowpath_null+0x15/0x17
[    3.659460]  [<ffffffff8106d7b9>] lockdep_init_map+0xea/0x43c
[    3.660616]  [<ffffffff81163c1a>] sysfs_add_file_mode+0x5d/0xa8
[    3.661785]  [<ffffffff81163c71>] sysfs_add_file+0xc/0xe
[    3.662929]  [<ffffffff81163d26>] sysfs_create_file+0x23/0x25
[    3.664045]  [<ffffffff813724d1>] device_create_file+0x14/0x16
[    3.665172]  [<ffffffff81460ed4>] coretemp_probe+0xf9/0x185
[    3.666306]  [<ffffffff8137638e>] platform_drv_probe+0x12/0x14
[    3.667420]  [<ffffffff81375321>] driver_probe_device+0xb0/0x14b
[    3.668542]  [<ffffffff8137546d>] __device_attach+0x35/0x3a
[    3.669710]  [<ffffffff81375438>] ? __driver_attach+0x7c/0x7c
[    3.670816]  [<ffffffff8137426b>] bus_for_each_drv+0x54/0x88
[    3.671921]  [<ffffffff81375231>] device_attach+0x77/0x9b
[    3.673027]  [<ffffffff81374aef>] bus_probe_device+0x22/0x39
[    3.674137]  [<ffffffff81373235>] device_add+0x3c1/0x550
[    3.675249]  [<ffffffff81371ed9>] ? dev_set_name+0x3c/0x3e
[    3.676371]  [<ffffffff813769f3>] platform_device_add+0x10c/0x156
[    3.677491]  [<ffffffff8146af9c>] get_core_online+0xab/0x16e
[    3.678608]  [<ffffffff81ad8070>] coretemp_init+0x4b/0x80
[    3.679724]  [<ffffffff81ad8025>] ? hwmon_init+0xee/0xee
[    3.680853]  [<ffffffff8100020a>] do_one_initcall+0x7a/0x13c
[    3.681975]  [<ffffffff81aaac74>] kernel_init+0xe1/0x15b
[    3.683081]  [<ffffffff8147e4e4>] kernel_thread_helper+0x4/0x10
[    3.684174]  [<ffffffff8102d48c>] ? finish_task_switch+0x76/0xf0
[    3.685266]  [<ffffffff81477918>] ? retint_restore_args+0x13/0x13
[    3.686356]  [<ffffffff81aaab93>] ? start_kernel+0x3ee/0x3ee
[    3.687425]  [<ffffffff8147e4e0>] ? gs_change+0x13/0x13
[    3.688489] ---[ end trace 7392ad3e6a92ae39 ]---

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-05-27 02:24:53 -07:00
Guenter Roeck f4e0bcf06b hwmon: (coretemp) Add comments describing the handling of HT CPUs
The coretemp driver provides a single set of device attributes for each
physical core of a HT CPU to avoid duplicate sensors.  This
functionality was introduced with commit d883b9f097 ("hwmon:
(coretemp) Skip duplicate CPU entries").

Commit e40cc4bdfd ("x86/hwmon: register alternate sibling upon CPU
removal") extends this functionality to register the HT sibling of a CPU
which is taken offline, to ensure that sensor attributes are provided if
at least one HT sibling of a core is online.

Add comments into the code describing the functionality in some more
detail.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-23 21:11:14 -07:00
Guenter Roeck bb74e8ca35 hwmon: (coretemp) Fix compile error if CONFIG_SMP is not defined
cpu_sibling_mask() is not defined unless CONFIG_SMP is defined, so it
must not be used directly in the code without ifdef protection.

To solve the problem and avoid ifdefs in the code, define
for_each_sibling() and use it instead.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-23 11:59:08 -07:00
Guenter Roeck 4cc452758f hwmon: (coretemp) Fix checkpatch errors
Fix remaining checkpatch errors in the coretemp driver.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Durgadoss R <durgadoss.r@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
2011-05-21 07:29:17 -07:00
Durgadoss R 199e0de7f5 hwmon: (coretemp) Merge pkgtemp with coretemp
This patch merges the pkgtemp with coretemp driver.
The sysfs interfaces for all cores in the same pkg
are shown under one directory, in hwmon. It also
supports CONFIG_HOTPLUG_CPU. So, the sysfs interfaces
are created when each core comes online and are
removed when it goes offline.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
[guenter.roeck@ericsson.com: Fixed section reference errors]
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-05-20 07:04:49 -07:00
Joe Perches f8bb892568 hwmon: (coretemp) Use pr_fmt and pr_<level>
Added #define pr_fmt KBUILD_MODNAME ": " fmt
Converted printks to pr_<level>
Coalesced any long formats
Removed prefixes from formats

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-01-08 10:55:05 -08:00
Jan Beulich 3247800676 hwmon: (coretemp) fix reading of microcode revision (v2)
According to the documentation, simply reading the respective MSR
isn't sufficient: It should be written with zeros, cpuid(1) be
executed, and then read (see arch/x86/kernel/cpu/intel.c for an
example).

v2: Fail probe when microcode revision cannot be determined, but is
needed to check for proper operation.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25 14:11:21 -07:00
Chen Gong 17c10d61c7 hwmon: ({core, pkg, via-cpu}temp) remove unnecessary CONFIG_HOTPLUG_CPU ifdefs
CONFIG_HOTPLUG_CPU is used too much in some drivers.
This patch clean them up.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25 14:11:21 -07:00
Jan Beulich 9401ba1328 x86/hwmon: remove inclusion of unnecessary headers from {core, pkg, via-cpu}temp.c
These likely originate from these drivers being clones of one another
and/or other drivers which actually needed these includes.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25 14:11:20 -07:00
Jan Beulich e0a8755b6b x86/hwmon: (coretemp) cosmetic cleanup
"break" after "return" is at best bogus (good compilers even warn about
the "break" being unreachable).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25 14:11:20 -07:00
Jan Beulich a5f42a6bc5 x86/hwmon: {core, pkg, via}cpu_temp_device_remove() can all be __cpuinit
... as they're being called only from a __cpuinit function.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-10-25 14:11:19 -07:00
Guenter Roeck fff2017354 hwmon (coretemp): Fix build breakage if SMP is undefined
Commit e40cc4bdfd introduced
a build breakage if CONFIG_SMP is undefined. This commit
fixes the problem.

This fix is only a workaround. For a real fix, cpu_sibling_mask() should
be defined in UP include code, eg in linux/smp.h, and asm/smp.h should not be
included directly. This fix is currently not possible because asm/smp.h defines
cpu_sibling_mask() unconditionally and is included directly from many source
files.

Reported-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
2010-09-28 04:18:51 -07:00
Jan Beulich e40cc4bdfd x86/hwmon: register alternate sibling upon CPU removal
Just like pkgtemp registers another core of the same package when one
gets removed, coretemp should register another hyperthread (if
available) in that situation.

As pointed out in the patch fixing the respective code in pkgtemp, the
list protectng mutex must be dropped before calling
coretemp_device_add(), and due to the restructured loop (including an
explicit return) the "safe" variant of the list iterator isn't needed
anymore.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-09-24 11:44:19 -07:00
Jan Beulich a46590533a x86/hwmon: fix initialization of coretemp
Using cpuid_eax() to determine feature availability on other than
the current CPU is invalid. And feature availability should also be
checked in the hotplug code path.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-09-24 11:44:19 -07:00
Jan Beulich 89a3fd35ba x86/hwmon: fix module init for hotplug-but-no-device-found case
In commit 0dca94baea the call to
platform_driver_unregister() was made conditional upon !HOTPLUG_CPU,
but the return value from coretemp_init() was left to indicate an
error. This isn't correct, as the negative return value indicates to
the module loader that initialization failed, which isn't intended
here and results in dangling pointers.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-09-24 11:44:18 -07:00
Jean Delvare 45ff34d32a hwmon: (coretemp) Fix harmless build warning
Fix the following build warning:

  CC [M]  drivers/hwmon/coretemp.o
drivers/hwmon/coretemp.c: In function "coretemp_init":
drivers/hwmon/coretemp.c:521: warning: unused variable "n"
drivers/hwmon/coretemp.c:521: warning: unused variable "p"

Introduced by commit 851b29cb3b. When
you drop code, you also have to drop the variables this code was
using.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@intel.com>
2010-08-25 15:42:08 +02:00
Andrew Morton 37713308d8 fix "hwmon: coretemp: update hotplug condition check"
In commit 0dca94baea ("hwmon: coretemp: update hotplug condition
check") we merged v2 of this patch.  Update that to v3.

The difference is to remove the new and unnecesary references to
CPU_*_FROZEN.

Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:58:59 -07:00
Andrew Morton 6b8e828261 drivers/hwmon/coretemp.c: remove unneeded #ifdef CONFIG_HOTPLUG_CPU
register_hotcpu_notifier() is designed to make these ifdefs unnecessary.

Cc: Chen Gong <gong.chen@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-09 20:45:10 -07:00
Chen Gong 851b29cb3b hwmon: coretemp: enable coretemp device add operation failure
If one coretemp device can't be added, it should allow subsequent adding
operation because every new-added device will create a new sysfs group,
not an additional sensor sys entry.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-09 20:45:10 -07:00
Chen Gong 0dca94baea hwmon: coretemp: update hotplug condition check
Fix two errors in hotplug.  One is for hotplug notifier.  The other is
unnecessary driver unregister.  Because even none of online cpus supports
coretemp, we can't assume new onlined cpu doesn't support it either.  If
related driver is unregistered there we have no chance to use coretemp
from then on.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-09 20:45:10 -07:00
Jean Delvare 3f4f09b4be hwmon: (coretemp) Properly label the sensors
Don't assume that CPU entry number and core ID always match. It
worked in the simple cases (single CPU, no HT) but fails on
multi-CPU systems.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Huaxu Wan <huaxu.wan@intel.com>
Cc: stable@kernel.org
2010-07-09 16:22:51 +02:00
Jean Delvare d883b9f097 hwmon: (coretemp) Skip duplicate CPU entries
On hyper-threaded CPUs, each core appears twice in the CPU list. Skip
the second entry to avoid duplicate sensors.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Huaxu Wan <huaxu.wan@intel.com>
Cc: stable@kernel.org
2010-07-09 16:22:49 +02:00
Carsten Emde a321cedb12 drivers/hwmon/coretemp.c: get TjMax value from MSR
The MSR IA32_TEMPERATURE_TARGET contains the TjMax value in the newer
Intel processors.

Signed-off-by: Huaxu Wan <huaxu.wan@linux.intel.com>
Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Yong Wang <yong.y.wang@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-25 08:07:07 -07:00
Carsten Emde 5db47b009d drivers/hwmon/coretemp.c: detect the thermal sensors by CPUID
The thermal sensors of Intel(R) CPUs can be detected by CPUID instruction,
indicated by CPUID.06H.EAX[0].

Signed-off-by: Huaxu Wan <huaxu.wan@linux.intel.com>
Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Reviewed-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Yong Wang <yong.y.wang@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-25 08:07:07 -07:00
Dean Nelson 4d7a5644e4 hwmon: (coretemp) Add missing newline to dev_warn() message
Add missing newline to dev_warn() message string. This is more of an issue
with older kernels that don't automatically add a newline if it was missing
from the end of the previous line.

Signed-off-by: Dean Nelson <dnelson@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-03-29 22:03:00 +02:00
Prarit Bhargava fcc6a7462e hwmon: (coretemp) Fix cpu model output
Avoid hex and decimal confusion when printing out the cpu model.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-03-29 22:02:59 +02:00
Yong Wang 1fe63ab47a hwmon: (coretemp) Fix TjMax for Atom N450/D410/D510 CPUs
The max junction temperature of Atom N450/D410/D510 CPUs is 100 degrees
Celsius. Since these CPUs are always coupled with Intel NM10 chipset in
one package, the best way to verify whether an Atom CPU is N450/D410/D510
is to check the host bridge device.

Signed-off-by: Yong Wang <yong.y.wang@intel.com>
Acked-by: Huaxu Wan <huaxu.wan@intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-01-10 20:52:34 +01:00
Huaxu Wan fa08acd7d1 hwmon: (coretemp) Add Lynnfield CPU
Add Lynnfield processor support. Lynnfield is a quad-core Nehalem
based microprocessor for Desktop market, which is introduced in
September 2009.

Signed-off-by: Huaxu Wan <huaxu.wan@linux.intel.com>
Signed-off-by: Kent Liu <kent.liu@linux.intel.com>
Acked-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-09-23 22:59:43 +02:00
Rudolf Marek eccfed4221 hwmon: (coretemp) Add support for Penryn mobile CPUs
Following patch adds support for mobile Penryn CPUs. Intel documents this
poorly. I asked the Coretemp author for some help. This is totally untested and
may not work. Please test!

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@linux.intel.com>
Cc: Kent Liu <kent.liu@linux.intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-09-23 22:59:42 +02:00
Rudolf Marek 708a62bcd5 hwmon: (coretemp) Fix Atom CPUs support
Fix Atom CPUs support. Intel documents TjMax at 90 degrees C but
some Atoms may have 125 degrees C (this is undocumented speculation).

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@linux.intel.com>
Cc: Kent Liu <kent.liu@linux.intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-09-23 22:59:42 +02:00
Michael Riepe 0bf41d9f41 drivers/hwmon/coretemp.c: enable the Intel Atom
Enable the coretemp driver on an Intel Atom.

I'm not sure if the readings are correct, however - on my 330, the driver
reports values between 27 and 41 °C (with core1 being about 8°C hotter
than core0, given the same load).  Maybe the maximum temperature of 100 °C
is wrong for Atom CPUs.

Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 07:17:48 -07:00
Darrick J. Wong 34c86c1e62 coretemp: recognize Nehalem CPUs
Add in the CPUID for Nehalem chips.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Cc: Kent Liu <kent.liu@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-15 08:35:44 -07:00
Rudolf Marek ae770152c8 hwmon: (coretemp) Add Penryn CPU to coretemp
This patch adds support for family 0x17, which has Penryn Core. It should also
cover the 8 cores Xeons.

Can someone test please? I think it should work.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 22:08:37 -05:00
Rudolf Marek 118a887188 hwmon: (coretemp) Add TjMax detection for mobile CPUs
Following patch will finally solve the detection of Intel Mobile CPUs which
share same CPUID with Desktop/Server CPUs. We need this information to test
some bit so we know if TjMax is 100C or 85C. Intel claims this works for mobiles
only, respect that and set for desktops the TjMax to 100C. Intel provided some
table on their wiki based on my chat with them at:
http://softwarecommunity.intel.com/isn/Community/en-US/forums/30247249/ShowThread.aspx#30247249

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 21:57:28 -05:00
Sam Ravnborg ba7c1927aa hwmon: (coretemp) fix section mismatch warning
Fix following warning:
WARNING: vmlinux.o(.text+0xebfd04): Section mismatch in reference from the function coretemp_cpu_callback() to the function .cpuinit.text:coretemp_device_add()

coretemp_cpu_callback() are only used inside a
HOTPLUG_CPU block so annotate it __cpuinit.
The notifier referencing the function are annotated
__refdata to silence warning from the exit function.
The unregister function do not use the embedded pointer
but clears the variable so the annotation is OK.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 11:26:55 -05:00
Rudolf Marek 6369a2887a hwmon: (coretemp) Add maximum cooling temperature readout
Following patch will add reporting of maximum temperature, at which all fans
should spin full speed. It may be non-physical temperature on Desktop/Server CPUs.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 10:21:39 -05:00
Rafael J. Wysocki 561d9a9694 HWMON: coretemp, suspend fix
It's not permitted to unregister a device after devices have been suspended.
It causes deadlocks to appear on systems with coretemp hwmon loaded.  To avoid
this, we can make coretemp_cpu_callback() do nothing if the _FROZEN bit is set
in action.
 
Also, in other cases it's generally too late to unregister the coretemp device
if the CPU is already dead, so it should be unregistered on CPU_DOWN_PREPARE.
 
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Mark M. Hoffman <mhoffman@lightlink.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-12-04 01:35:32 -05:00
Mike Travis 92cb7612ae x86: convert cpuinfo_x86 array to a per_cpu array
cpu_data is currently an array defined using NR_CPUS.  This means that
we overallocate since we will rarely really use maximum configured cpus.
When NR_CPU count is raised to 4096 the size of cpu_data becomes
3,145,728 bytes.

These changes were adopted from the sparc64 (and ia64) code.  An
additional field was added to cpuinfo_x86 to be a non-ambiguous cpu
index.  This corresponds to the index into a cpumask_t as well as the
per_cpu index.  It's used in various places like show_cpuinfo().

cpu_data is defined to be the boot_cpu_data structure for the NON-SMP
case.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-19 20:35:04 +02:00
Rudolf Marek c940336b44 hwmon: (coretemp) Add support for Celeron 4xx
This patch adds support for the Celeron 4xx based on Core 2 core.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:32 -04:00
Tony Jones 1beeffe433 hwmon: Convert from class_device to device
Convert from class_device to device for hwmon_device_register/unregister

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:30 -04:00
Satyam Sharma 59a35bafb2 hwmon: (coretemp) Remove bogus __cpuinitdata etc cleanup
The CPU hotplug notifier_block coretemp_cpu_notifier is already defined
inside an #ifdef HOTPLUG_CPU, therefore marking it as __cpuinitdata is
quite a pointless thing to do.

Also, remove duplicate prototype of function coretemp_update_device()
at the top of this file (another one already exists barely 10 lines
above this one :-)

Signed-off-by: Satyam Sharma <satyam@infradead.org>
Acked-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:29 -04:00
Adrian Bunk d2bc7b135a make coretemp_device_remove() static
coretemp_device_remove() can become static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-07-19 14:22:16 -04:00
Jean Delvare 6d79af701d hwmon/coretemp: fix a broken error path
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-24 08:59:10 -07:00
Rudolf Marek 67f363b1f6 hwmon/coretemp: Add more safety checks
Add detection of AE18 Errata of Core processor and warns
users that the absolute readings might be wrong for Core2 processor.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-27 22:17:43 +02:00