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Kirill Smelkov
linux
Commits
bbfebd66
Commit
bbfebd66
authored
Jan 17, 2009
by
Dave Jones
Browse files
Options
Browse Files
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Plain Diff
[CPUFREQ] checkpatch cleanups for speedstep related drivers.
Signed-off-by:
Dave Jones
<
davej@redhat.com
>
parent
97acec55
Changes
5
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Showing
5 changed files
with
258 additions
and
185 deletions
+258
-185
arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
+34
-26
arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
+37
-33
arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
+77
-52
arch/x86/kernel/cpu/cpufreq/speedstep-lib.h
arch/x86/kernel/cpu/cpufreq/speedstep-lib.h
+9
-9
arch/x86/kernel/cpu/cpufreq/speedstep-smi.c
arch/x86/kernel/cpu/cpufreq/speedstep-smi.c
+101
-65
No files found.
arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
View file @
bbfebd66
...
@@ -27,15 +27,16 @@
...
@@ -27,15 +27,16 @@
#include <linux/cpufreq.h>
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/slab.h>
#include <linux/cpumask.h>
#include <linux/cpumask.h>
#include <linux/timex.h>
#include <asm/processor.h>
#include <asm/processor.h>
#include <asm/msr.h>
#include <asm/msr.h>
#include <asm/timex.h>
#include "speedstep-lib.h"
#include "speedstep-lib.h"
#define PFX "p4-clockmod: "
#define PFX "p4-clockmod: "
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "p4-clockmod", msg)
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \
"p4-clockmod", msg)
/*
/*
* Duty Cycle (3bits), note DC_DISABLE is not specified in
* Duty Cycle (3bits), note DC_DISABLE is not specified in
...
@@ -58,7 +59,8 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
...
@@ -58,7 +59,8 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
{
{
u32
l
,
h
;
u32
l
,
h
;
if
(
!
cpu_online
(
cpu
)
||
(
newstate
>
DC_DISABLE
)
||
(
newstate
==
DC_RESV
))
if
(
!
cpu_online
(
cpu
)
||
(
newstate
>
DC_DISABLE
)
||
(
newstate
==
DC_RESV
))
return
-
EINVAL
;
return
-
EINVAL
;
rdmsr_on_cpu
(
cpu
,
MSR_IA32_THERM_STATUS
,
&
l
,
&
h
);
rdmsr_on_cpu
(
cpu
,
MSR_IA32_THERM_STATUS
,
&
l
,
&
h
);
...
@@ -66,7 +68,8 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
...
@@ -66,7 +68,8 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
if
(
l
&
0x01
)
if
(
l
&
0x01
)
dprintk
(
"CPU#%d currently thermal throttled
\n
"
,
cpu
);
dprintk
(
"CPU#%d currently thermal throttled
\n
"
,
cpu
);
if
(
has_N44_O17_errata
[
cpu
]
&&
(
newstate
==
DC_25PT
||
newstate
==
DC_DFLT
))
if
(
has_N44_O17_errata
[
cpu
]
&&
(
newstate
==
DC_25PT
||
newstate
==
DC_DFLT
))
newstate
=
DC_38PT
;
newstate
=
DC_38PT
;
rdmsr_on_cpu
(
cpu
,
MSR_IA32_THERM_CONTROL
,
&
l
,
&
h
);
rdmsr_on_cpu
(
cpu
,
MSR_IA32_THERM_CONTROL
,
&
l
,
&
h
);
...
@@ -112,7 +115,8 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
...
@@ -112,7 +115,8 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
struct
cpufreq_freqs
freqs
;
struct
cpufreq_freqs
freqs
;
int
i
;
int
i
;
if
(
cpufreq_frequency_table_target
(
policy
,
&
p4clockmod_table
[
0
],
target_freq
,
relation
,
&
newstate
))
if
(
cpufreq_frequency_table_target
(
policy
,
&
p4clockmod_table
[
0
],
target_freq
,
relation
,
&
newstate
))
return
-
EINVAL
;
return
-
EINVAL
;
freqs
.
old
=
cpufreq_p4_get
(
policy
->
cpu
);
freqs
.
old
=
cpufreq_p4_get
(
policy
->
cpu
);
...
@@ -127,7 +131,8 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
...
@@ -127,7 +131,8 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
cpufreq_notify_transition
(
&
freqs
,
CPUFREQ_PRECHANGE
);
cpufreq_notify_transition
(
&
freqs
,
CPUFREQ_PRECHANGE
);
}
}
/* run on each logical CPU, see section 13.15.3 of IA32 Intel Architecture Software
/* run on each logical CPU,
* see section 13.15.3 of IA32 Intel Architecture Software
* Developer's Manual, Volume 3
* Developer's Manual, Volume 3
*/
*/
for_each_cpu
(
i
,
policy
->
cpus
)
for_each_cpu
(
i
,
policy
->
cpus
)
...
@@ -153,28 +158,30 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
...
@@ -153,28 +158,30 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
{
{
if
(
c
->
x86
==
0x06
)
{
if
(
c
->
x86
==
0x06
)
{
if
(
cpu_has
(
c
,
X86_FEATURE_EST
))
if
(
cpu_has
(
c
,
X86_FEATURE_EST
))
printk
(
KERN_WARNING
PFX
"Warning: EST-capable CPU detected. "
printk
(
KERN_WARNING
PFX
"Warning: EST-capable CPU "
"The acpi-cpufreq module offers voltage scaling"
"detected. The acpi-cpufreq module offers "
" in addition of frequency scaling. You should use "
"voltage scaling in addition of frequency "
"that instead of p4-clockmod, if possible.
\n
"
);
"scaling. You should use that instead of "
"p4-clockmod, if possible.
\n
"
);
switch
(
c
->
x86_model
)
{
switch
(
c
->
x86_model
)
{
case
0x0E
:
/* Core */
case
0x0E
:
/* Core */
case
0x0F
:
/* Core Duo */
case
0x0F
:
/* Core Duo */
case
0x16
:
/* Celeron Core */
case
0x16
:
/* Celeron Core */
p4clockmod_driver
.
flags
|=
CPUFREQ_CONST_LOOPS
;
p4clockmod_driver
.
flags
|=
CPUFREQ_CONST_LOOPS
;
return
speedstep_get_
processor_frequency
(
SPEEDSTEP_PROCESSOR
_PCORE
);
return
speedstep_get_
frequency
(
SPEEDSTEP_CPU
_PCORE
);
case
0x0D
:
/* Pentium M (Dothan) */
case
0x0D
:
/* Pentium M (Dothan) */
p4clockmod_driver
.
flags
|=
CPUFREQ_CONST_LOOPS
;
p4clockmod_driver
.
flags
|=
CPUFREQ_CONST_LOOPS
;
/* fall through */
/* fall through */
case
0x09
:
/* Pentium M (Banias) */
case
0x09
:
/* Pentium M (Banias) */
return
speedstep_get_
processor_frequency
(
SPEEDSTEP_PROCESSOR
_PM
);
return
speedstep_get_
frequency
(
SPEEDSTEP_CPU
_PM
);
}
}
}
}
if
(
c
->
x86
!=
0xF
)
{
if
(
c
->
x86
!=
0xF
)
{
if
(
!
cpu_has
(
c
,
X86_FEATURE_EST
))
if
(
!
cpu_has
(
c
,
X86_FEATURE_EST
))
printk
(
KERN_WARNING
PFX
"Unknown p4-clockmod-capable CPU. "
printk
(
KERN_WARNING
PFX
"Unknown CPU. "
"Please send an e-mail to <cpufreq@vger.kernel.org>
\n
"
);
"Please send an e-mail to "
"<cpufreq@vger.kernel.org>
\n
"
);
return
0
;
return
0
;
}
}
...
@@ -182,16 +189,16 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
...
@@ -182,16 +189,16 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
* throttling is active or not. */
* throttling is active or not. */
p4clockmod_driver
.
flags
|=
CPUFREQ_CONST_LOOPS
;
p4clockmod_driver
.
flags
|=
CPUFREQ_CONST_LOOPS
;
if
(
speedstep_detect_processor
()
==
SPEEDSTEP_
PROCESSOR
_P4M
)
{
if
(
speedstep_detect_processor
()
==
SPEEDSTEP_
CPU
_P4M
)
{
printk
(
KERN_WARNING
PFX
"Warning: Pentium 4-M detected. "
printk
(
KERN_WARNING
PFX
"Warning: Pentium 4-M detected. "
"The speedstep-ich or acpi cpufreq modules offer "
"The speedstep-ich or acpi cpufreq modules offer "
"voltage scaling in addition of frequency scaling. "
"voltage scaling in addition of frequency scaling. "
"You should use either one instead of p4-clockmod, "
"You should use either one instead of p4-clockmod, "
"if possible.
\n
"
);
"if possible.
\n
"
);
return
speedstep_get_
processor_frequency
(
SPEEDSTEP_PROCESSOR
_P4M
);
return
speedstep_get_
frequency
(
SPEEDSTEP_CPU
_P4M
);
}
}
return
speedstep_get_
processor_frequency
(
SPEEDSTEP_PROCESSOR
_P4D
);
return
speedstep_get_
frequency
(
SPEEDSTEP_CPU
_P4D
);
}
}
...
@@ -223,8 +230,8 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
...
@@ -223,8 +230,8 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
return
-
EINVAL
;
return
-
EINVAL
;
/* table init */
/* table init */
for
(
i
=
1
;
(
p4clockmod_table
[
i
].
frequency
!=
CPUFREQ_TABLE_END
);
i
++
)
{
for
(
i
=
1
;
(
p4clockmod_table
[
i
].
frequency
!=
CPUFREQ_TABLE_END
);
i
++
)
{
if
((
i
<
2
)
&&
(
has_N44_O17_errata
[
policy
->
cpu
]))
if
((
i
<
2
)
&&
(
has_N44_O17_errata
[
policy
->
cpu
]))
p4clockmod_table
[
i
].
frequency
=
CPUFREQ_ENTRY_INVALID
;
p4clockmod_table
[
i
].
frequency
=
CPUFREQ_ENTRY_INVALID
;
else
else
p4clockmod_table
[
i
].
frequency
=
(
stock_freq
*
i
)
/
8
;
p4clockmod_table
[
i
].
frequency
=
(
stock_freq
*
i
)
/
8
;
...
@@ -258,12 +265,12 @@ static unsigned int cpufreq_p4_get(unsigned int cpu)
...
@@ -258,12 +265,12 @@ static unsigned int cpufreq_p4_get(unsigned int cpu)
l
=
DC_DISABLE
;
l
=
DC_DISABLE
;
if
(
l
!=
DC_DISABLE
)
if
(
l
!=
DC_DISABLE
)
return
(
stock_freq
*
l
/
8
)
;
return
stock_freq
*
l
/
8
;
return
stock_freq
;
return
stock_freq
;
}
}
static
struct
freq_attr
*
p4clockmod_attr
[]
=
{
static
struct
freq_attr
*
p4clockmod_attr
[]
=
{
&
cpufreq_freq_attr_scaling_available_freqs
,
&
cpufreq_freq_attr_scaling_available_freqs
,
NULL
,
NULL
,
};
};
...
@@ -299,9 +306,10 @@ static int __init cpufreq_p4_init(void)
...
@@ -299,9 +306,10 @@ static int __init cpufreq_p4_init(void)
ret
=
cpufreq_register_driver
(
&
p4clockmod_driver
);
ret
=
cpufreq_register_driver
(
&
p4clockmod_driver
);
if
(
!
ret
)
if
(
!
ret
)
printk
(
KERN_INFO
PFX
"P4/Xeon(TM) CPU On-Demand Clock Modulation available
\n
"
);
printk
(
KERN_INFO
PFX
"P4/Xeon(TM) CPU On-Demand Clock "
"Modulation available
\n
"
);
return
(
ret
)
;
return
ret
;
}
}
...
@@ -311,9 +319,9 @@ static void __exit cpufreq_p4_exit(void)
...
@@ -311,9 +319,9 @@ static void __exit cpufreq_p4_exit(void)
}
}
MODULE_AUTHOR
(
"Zwane Mwaikambo <zwane@commfireservices.com>"
);
MODULE_AUTHOR
(
"Zwane Mwaikambo <zwane@commfireservices.com>"
);
MODULE_DESCRIPTION
(
"cpufreq driver for Pentium(TM) 4/Xeon(TM)"
);
MODULE_DESCRIPTION
(
"cpufreq driver for Pentium(TM) 4/Xeon(TM)"
);
MODULE_LICENSE
(
"GPL"
);
MODULE_LICENSE
(
"GPL"
);
late_initcall
(
cpufreq_p4_init
);
late_initcall
(
cpufreq_p4_init
);
module_exit
(
cpufreq_p4_exit
);
module_exit
(
cpufreq_p4_exit
);
arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
View file @
bbfebd66
...
@@ -39,7 +39,7 @@ static struct pci_dev *speedstep_chipset_dev;
...
@@ -39,7 +39,7 @@ static struct pci_dev *speedstep_chipset_dev;
/* speedstep_processor
/* speedstep_processor
*/
*/
static
unsigned
int
speedstep_processor
=
0
;
static
unsigned
int
speedstep_processor
;
static
u32
pmbase
;
static
u32
pmbase
;
...
@@ -54,7 +54,8 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
...
@@ -54,7 +54,8 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
};
};
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "speedstep-ich", msg)
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \
"speedstep-ich", msg)
/**
/**
...
@@ -62,7 +63,7 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
...
@@ -62,7 +63,7 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
*
*
* Returns: -ENODEV if no register could be found
* Returns: -ENODEV if no register could be found
*/
*/
static
int
speedstep_find_register
(
void
)
static
int
speedstep_find_register
(
void
)
{
{
if
(
!
speedstep_chipset_dev
)
if
(
!
speedstep_chipset_dev
)
return
-
ENODEV
;
return
-
ENODEV
;
...
@@ -90,7 +91,7 @@ static int speedstep_find_register (void)
...
@@ -90,7 +91,7 @@ static int speedstep_find_register (void)
*
*
* Tries to change the SpeedStep state.
* Tries to change the SpeedStep state.
*/
*/
static
void
speedstep_set_state
(
unsigned
int
state
)
static
void
speedstep_set_state
(
unsigned
int
state
)
{
{
u8
pm2_blk
;
u8
pm2_blk
;
u8
value
;
u8
value
;
...
@@ -133,11 +134,11 @@ static void speedstep_set_state (unsigned int state)
...
@@ -133,11 +134,11 @@ static void speedstep_set_state (unsigned int state)
dprintk
(
"read at pmbase 0x%x + 0x50 returned 0x%x
\n
"
,
pmbase
,
value
);
dprintk
(
"read at pmbase 0x%x + 0x50 returned 0x%x
\n
"
,
pmbase
,
value
);
if
(
state
==
(
value
&
0x1
))
{
if
(
state
==
(
value
&
0x1
))
dprintk
(
"change to %u MHz succeeded
\n
"
,
(
speedstep_get_processor_frequency
(
speedstep_processor
)
/
1000
));
dprintk
(
"change to %u MHz succeeded
\n
"
,
}
else
{
speedstep_get_frequency
(
speedstep_processor
)
/
1000
);
printk
(
KERN_ERR
"cpufreq: change failed - I/O error
\n
"
);
else
}
printk
(
KERN_ERR
"cpufreq: change failed - I/O error
\n
"
);
return
;
return
;
}
}
...
@@ -149,7 +150,7 @@ static void speedstep_set_state (unsigned int state)
...
@@ -149,7 +150,7 @@ static void speedstep_set_state (unsigned int state)
* Tries to activate the SpeedStep status and control registers.
* Tries to activate the SpeedStep status and control registers.
* Returns -EINVAL on an unsupported chipset, and zero on success.
* Returns -EINVAL on an unsupported chipset, and zero on success.
*/
*/
static
int
speedstep_activate
(
void
)
static
int
speedstep_activate
(
void
)
{
{
u16
value
=
0
;
u16
value
=
0
;
...
@@ -175,20 +176,18 @@ static int speedstep_activate (void)
...
@@ -175,20 +176,18 @@ static int speedstep_activate (void)
* functions. Returns the SPEEDSTEP_CHIPSET_-number for the detected
* functions. Returns the SPEEDSTEP_CHIPSET_-number for the detected
* chipset, or zero on failure.
* chipset, or zero on failure.
*/
*/
static
unsigned
int
speedstep_detect_chipset
(
void
)
static
unsigned
int
speedstep_detect_chipset
(
void
)
{
{
speedstep_chipset_dev
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
speedstep_chipset_dev
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
PCI_DEVICE_ID_INTEL_82801DB_12
,
PCI_DEVICE_ID_INTEL_82801DB_12
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
NULL
);
NULL
);
if
(
speedstep_chipset_dev
)
if
(
speedstep_chipset_dev
)
return
4
;
/* 4-M */
return
4
;
/* 4-M */
speedstep_chipset_dev
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
speedstep_chipset_dev
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
PCI_DEVICE_ID_INTEL_82801CA_12
,
PCI_DEVICE_ID_INTEL_82801CA_12
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
NULL
);
NULL
);
if
(
speedstep_chipset_dev
)
if
(
speedstep_chipset_dev
)
return
3
;
/* 3-M */
return
3
;
/* 3-M */
...
@@ -196,8 +195,7 @@ static unsigned int speedstep_detect_chipset (void)
...
@@ -196,8 +195,7 @@ static unsigned int speedstep_detect_chipset (void)
speedstep_chipset_dev
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
speedstep_chipset_dev
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
PCI_DEVICE_ID_INTEL_82801BA_10
,
PCI_DEVICE_ID_INTEL_82801BA_10
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
NULL
);
NULL
);
if
(
speedstep_chipset_dev
)
{
if
(
speedstep_chipset_dev
)
{
/* speedstep.c causes lockups on Dell Inspirons 8000 and
/* speedstep.c causes lockups on Dell Inspirons 8000 and
...
@@ -208,8 +206,7 @@ static unsigned int speedstep_detect_chipset (void)
...
@@ -208,8 +206,7 @@ static unsigned int speedstep_detect_chipset (void)
hostbridge
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
hostbridge
=
pci_get_subsys
(
PCI_VENDOR_ID_INTEL
,
PCI_DEVICE_ID_INTEL_82815_MC
,
PCI_DEVICE_ID_INTEL_82815_MC
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
PCI_ANY_ID
,
NULL
);
NULL
);
if
(
!
hostbridge
)
if
(
!
hostbridge
)
...
@@ -236,7 +233,7 @@ static unsigned int _speedstep_get(const struct cpumask *cpus)
...
@@ -236,7 +233,7 @@ static unsigned int _speedstep_get(const struct cpumask *cpus)
cpus_allowed
=
current
->
cpus_allowed
;
cpus_allowed
=
current
->
cpus_allowed
;
set_cpus_allowed_ptr
(
current
,
cpus
);
set_cpus_allowed_ptr
(
current
,
cpus
);
speed
=
speedstep_get_
processor_
frequency
(
speedstep_processor
);
speed
=
speedstep_get_frequency
(
speedstep_processor
);
set_cpus_allowed_ptr
(
current
,
&
cpus_allowed
);
set_cpus_allowed_ptr
(
current
,
&
cpus_allowed
);
dprintk
(
"detected %u kHz as current frequency
\n
"
,
speed
);
dprintk
(
"detected %u kHz as current frequency
\n
"
,
speed
);
return
speed
;
return
speed
;
...
@@ -251,11 +248,12 @@ static unsigned int speedstep_get(unsigned int cpu)
...
@@ -251,11 +248,12 @@ static unsigned int speedstep_get(unsigned int cpu)
* speedstep_target - set a new CPUFreq policy
* speedstep_target - set a new CPUFreq policy
* @policy: new policy
* @policy: new policy
* @target_freq: the target frequency
* @target_freq: the target frequency
* @relation: how that frequency relates to achieved frequency (CPUFREQ_RELATION_L or CPUFREQ_RELATION_H)
* @relation: how that frequency relates to achieved frequency
* (CPUFREQ_RELATION_L or CPUFREQ_RELATION_H)
*
*
* Sets a new CPUFreq policy.
* Sets a new CPUFreq policy.
*/
*/
static
int
speedstep_target
(
struct
cpufreq_policy
*
policy
,
static
int
speedstep_target
(
struct
cpufreq_policy
*
policy
,
unsigned
int
target_freq
,
unsigned
int
target_freq
,
unsigned
int
relation
)
unsigned
int
relation
)
{
{
...
@@ -264,7 +262,8 @@ static int speedstep_target (struct cpufreq_policy *policy,
...
@@ -264,7 +262,8 @@ static int speedstep_target (struct cpufreq_policy *policy,
cpumask_t
cpus_allowed
;
cpumask_t
cpus_allowed
;
int
i
;
int
i
;
if
(
cpufreq_frequency_table_target
(
policy
,
&
speedstep_freqs
[
0
],
target_freq
,
relation
,
&
newstate
))
if
(
cpufreq_frequency_table_target
(
policy
,
&
speedstep_freqs
[
0
],
target_freq
,
relation
,
&
newstate
))
return
-
EINVAL
;
return
-
EINVAL
;
freqs
.
old
=
_speedstep_get
(
policy
->
cpus
);
freqs
.
old
=
_speedstep_get
(
policy
->
cpus
);
...
@@ -308,7 +307,7 @@ static int speedstep_target (struct cpufreq_policy *policy,
...
@@ -308,7 +307,7 @@ static int speedstep_target (struct cpufreq_policy *policy,
* Limit must be within speedstep_low_freq and speedstep_high_freq, with
* Limit must be within speedstep_low_freq and speedstep_high_freq, with
* at least one border included.
* at least one border included.
*/
*/
static
int
speedstep_verify
(
struct
cpufreq_policy
*
policy
)
static
int
speedstep_verify
(
struct
cpufreq_policy
*
policy
)
{
{
return
cpufreq_frequency_table_verify
(
policy
,
&
speedstep_freqs
[
0
]);
return
cpufreq_frequency_table_verify
(
policy
,
&
speedstep_freqs
[
0
]);
}
}
...
@@ -344,7 +343,8 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
...
@@ -344,7 +343,8 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
return
-
EIO
;
return
-
EIO
;
dprintk
(
"currently at %s speed setting - %i MHz
\n
"
,
dprintk
(
"currently at %s speed setting - %i MHz
\n
"
,
(
speed
==
speedstep_freqs
[
SPEEDSTEP_LOW
].
frequency
)
?
"low"
:
"high"
,
(
speed
==
speedstep_freqs
[
SPEEDSTEP_LOW
].
frequency
)
?
"low"
:
"high"
,
(
speed
/
1000
));
(
speed
/
1000
));
/* cpuinfo and default policy values */
/* cpuinfo and default policy values */
...
@@ -352,7 +352,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
...
@@ -352,7 +352,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
result
=
cpufreq_frequency_table_cpuinfo
(
policy
,
speedstep_freqs
);
result
=
cpufreq_frequency_table_cpuinfo
(
policy
,
speedstep_freqs
);
if
(
result
)
if
(
result
)
return
(
result
)
;
return
result
;
cpufreq_frequency_table_get_attr
(
speedstep_freqs
,
policy
->
cpu
);
cpufreq_frequency_table_get_attr
(
speedstep_freqs
,
policy
->
cpu
);
...
@@ -366,7 +366,7 @@ static int speedstep_cpu_exit(struct cpufreq_policy *policy)
...
@@ -366,7 +366,7 @@ static int speedstep_cpu_exit(struct cpufreq_policy *policy)
return
0
;
return
0
;
}
}
static
struct
freq_attr
*
speedstep_attr
[]
=
{
static
struct
freq_attr
*
speedstep_attr
[]
=
{
&
cpufreq_freq_attr_scaling_available_freqs
,
&
cpufreq_freq_attr_scaling_available_freqs
,
NULL
,
NULL
,
};
};
...
@@ -396,13 +396,15 @@ static int __init speedstep_init(void)
...
@@ -396,13 +396,15 @@ static int __init speedstep_init(void)
/* detect processor */
/* detect processor */
speedstep_processor
=
speedstep_detect_processor
();
speedstep_processor
=
speedstep_detect_processor
();
if
(
!
speedstep_processor
)
{
if
(
!
speedstep_processor
)
{
dprintk
(
"Intel(R) SpeedStep(TM) capable processor not found
\n
"
);
dprintk
(
"Intel(R) SpeedStep(TM) capable processor "
"not found
\n
"
);
return
-
ENODEV
;
return
-
ENODEV
;
}
}
/* detect chipset */
/* detect chipset */
if
(
!
speedstep_detect_chipset
())
{
if
(
!
speedstep_detect_chipset
())
{
dprintk
(
"Intel(R) SpeedStep(TM) for this chipset not (yet) available.
\n
"
);
dprintk
(
"Intel(R) SpeedStep(TM) for this chipset not "
"(yet) available.
\n
"
);
return
-
ENODEV
;
return
-
ENODEV
;
}
}
...
@@ -431,9 +433,11 @@ static void __exit speedstep_exit(void)
...
@@ -431,9 +433,11 @@ static void __exit speedstep_exit(void)
}
}
MODULE_AUTHOR
(
"Dave Jones <davej@redhat.com>, Dominik Brodowski <linux@brodo.de>"
);
MODULE_AUTHOR
(
"Dave Jones <davej@redhat.com>, "
MODULE_DESCRIPTION
(
"Speedstep driver for Intel mobile processors on chipsets with ICH-M southbridges."
);
"Dominik Brodowski <linux@brodo.de>"
);
MODULE_LICENSE
(
"GPL"
);
MODULE_DESCRIPTION
(
"Speedstep driver for Intel mobile processors on chipsets "
"with ICH-M southbridges."
);
MODULE_LICENSE
(
"GPL"
);
module_init
(
speedstep_init
);
module_init
(
speedstep_init
);
module_exit
(
speedstep_exit
);
module_exit
(
speedstep_exit
);
arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
View file @
bbfebd66
...
@@ -18,10 +18,13 @@
...
@@ -18,10 +18,13 @@
#include <asm/msr.h>
#include <asm/msr.h>
#include "speedstep-lib.h"
#include "speedstep-lib.h"
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "speedstep-lib", msg)
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \
"speedstep-lib", msg)
#define PFX "speedstep-lib: "
#ifdef CONFIG_X86_SPEEDSTEP_RELAXED_CAP_CHECK
#ifdef CONFIG_X86_SPEEDSTEP_RELAXED_CAP_CHECK
static
int
relaxed_check
=
0
;
static
int
relaxed_check
;
#else
#else
#define relaxed_check 0
#define relaxed_check 0
#endif
#endif
...
@@ -30,14 +33,14 @@ static int relaxed_check = 0;
...
@@ -30,14 +33,14 @@ static int relaxed_check = 0;
* GET PROCESSOR CORE SPEED IN KHZ *
* GET PROCESSOR CORE SPEED IN KHZ *
*********************************************************************/
*********************************************************************/
static
unsigned
int
pentium3_get_frequency
(
unsigned
int
processor
)
static
unsigned
int
pentium3_get_frequency
(
unsigned
int
processor
)
{
{
/* See table 14 of p3_ds.pdf and table 22 of 29834003.pdf */
/* See table 14 of p3_ds.pdf and table 22 of 29834003.pdf */
struct
{
struct
{
unsigned
int
ratio
;
/* Frequency Multiplier (x10) */
unsigned
int
ratio
;
/* Frequency Multiplier (x10) */
u8
bitmap
;
/* power on configuration bits
u8
bitmap
;
/* power on configuration bits
[27, 25:22] (in MSR 0x2a) */
[27, 25:22] (in MSR 0x2a) */
}
msr_decode_mult
[]
=
{
}
msr_decode_mult
[]
=
{
{
30
,
0x01
},
{
30
,
0x01
},
{
35
,
0x05
},
{
35
,
0x05
},
{
40
,
0x02
},
{
40
,
0x02
},
...
@@ -60,7 +63,7 @@ static unsigned int pentium3_get_frequency (unsigned int processor)
...
@@ -60,7 +63,7 @@ static unsigned int pentium3_get_frequency (unsigned int processor)
unsigned
int
value
;
/* Front Side Bus speed in MHz */
unsigned
int
value
;
/* Front Side Bus speed in MHz */
u8
bitmap
;
/* power on configuration bits [18: 19]
u8
bitmap
;
/* power on configuration bits [18: 19]
(in MSR 0x2a) */
(in MSR 0x2a) */
}
msr_decode_fsb
[]
=
{
}
msr_decode_fsb
[]
=
{
{
66
,
0x0
},
{
66
,
0x0
},
{
100
,
0x2
},
{
100
,
0x2
},
{
133
,
0x1
},
{
133
,
0x1
},
...
@@ -85,7 +88,7 @@ static unsigned int pentium3_get_frequency (unsigned int processor)
...
@@ -85,7 +88,7 @@ static unsigned int pentium3_get_frequency (unsigned int processor)
}
}
/* decode the multiplier */
/* decode the multiplier */
if
(
processor
==
SPEEDSTEP_
PROCESSOR
_PIII_C_EARLY
)
{
if
(
processor
==
SPEEDSTEP_
CPU
_PIII_C_EARLY
)
{
dprintk
(
"workaround for early PIIIs
\n
"
);
dprintk
(
"workaround for early PIIIs
\n
"
);
msr_lo
&=
0x03c00000
;
msr_lo
&=
0x03c00000
;
}
else
}
else
...
@@ -97,9 +100,10 @@ static unsigned int pentium3_get_frequency (unsigned int processor)
...
@@ -97,9 +100,10 @@ static unsigned int pentium3_get_frequency (unsigned int processor)
j
++
;
j
++
;
}
}
dprintk
(
"speed is %u
\n
"
,
(
msr_decode_mult
[
j
].
ratio
*
msr_decode_fsb
[
i
].
value
*
100
));
dprintk
(
"speed is %u
\n
"
,
(
msr_decode_mult
[
j
].
ratio
*
msr_decode_fsb
[
i
].
value
*
100
));
return
(
msr_decode_mult
[
j
].
ratio
*
msr_decode_fsb
[
i
].
value
*
100
)
;
return
msr_decode_mult
[
j
].
ratio
*
msr_decode_fsb
[
i
].
value
*
100
;
}
}
...
@@ -112,20 +116,23 @@ static unsigned int pentiumM_get_frequency(void)
...
@@ -112,20 +116,23 @@ static unsigned int pentiumM_get_frequency(void)
/* see table B-2 of 24547212.pdf */
/* see table B-2 of 24547212.pdf */
if
(
msr_lo
&
0x00040000
)
{
if
(
msr_lo
&
0x00040000
)
{
printk
(
KERN_DEBUG
"speedstep-lib: PM - invalid FSB: 0x%x 0x%x
\n
"
,
msr_lo
,
msr_tmp
);
printk
(
KERN_DEBUG
PFX
"PM - invalid FSB: 0x%x 0x%x
\n
"
,
msr_lo
,
msr_tmp
);
return
0
;
return
0
;
}
}
msr_tmp
=
(
msr_lo
>>
22
)
&
0x1f
;
msr_tmp
=
(
msr_lo
>>
22
)
&
0x1f
;
dprintk
(
"bits 22-26 are 0x%x, speed is %u
\n
"
,
msr_tmp
,
(
msr_tmp
*
100
*
1000
));
dprintk
(
"bits 22-26 are 0x%x, speed is %u
\n
"
,
msr_tmp
,
(
msr_tmp
*
100
*
1000
));
return
(
msr_tmp
*
100
*
1000
)
;
return
msr_tmp
*
100
*
1000
;
}
}
static
unsigned
int
pentium_core_get_frequency
(
void
)
static
unsigned
int
pentium_core_get_frequency
(
void
)
{
{
u32
fsb
=
0
;
u32
fsb
=
0
;
u32
msr_lo
,
msr_tmp
;
u32
msr_lo
,
msr_tmp
;
int
ret
;
rdmsr
(
MSR_FSB_FREQ
,
msr_lo
,
msr_tmp
);
rdmsr
(
MSR_FSB_FREQ
,
msr_lo
,
msr_tmp
);
/* see table B-2 of 25366920.pdf */
/* see table B-2 of 25366920.pdf */
...
@@ -153,12 +160,15 @@ static unsigned int pentium_core_get_frequency(void)
...
@@ -153,12 +160,15 @@ static unsigned int pentium_core_get_frequency(void)
}
}
rdmsr
(
MSR_IA32_EBL_CR_POWERON
,
msr_lo
,
msr_tmp
);
rdmsr
(
MSR_IA32_EBL_CR_POWERON
,
msr_lo
,
msr_tmp
);
dprintk
(
"PCORE - MSR_IA32_EBL_CR_POWERON: 0x%x 0x%x
\n
"
,
msr_lo
,
msr_tmp
);
dprintk
(
"PCORE - MSR_IA32_EBL_CR_POWERON: 0x%x 0x%x
\n
"
,
msr_lo
,
msr_tmp
);
msr_tmp
=
(
msr_lo
>>
22
)
&
0x1f
;
msr_tmp
=
(
msr_lo
>>
22
)
&
0x1f
;
dprintk
(
"bits 22-26 are 0x%x, speed is %u
\n
"
,
msr_tmp
,
(
msr_tmp
*
fsb
));
dprintk
(
"bits 22-26 are 0x%x, speed is %u
\n
"
,
msr_tmp
,
(
msr_tmp
*
fsb
));
return
(
msr_tmp
*
fsb
);
ret
=
(
msr_tmp
*
fsb
);
return
ret
;
}
}
...
@@ -167,6 +177,7 @@ static unsigned int pentium4_get_frequency(void)
...
@@ -167,6 +177,7 @@ static unsigned int pentium4_get_frequency(void)
struct
cpuinfo_x86
*
c
=
&
boot_cpu_data
;
struct
cpuinfo_x86
*
c
=
&
boot_cpu_data
;
u32
msr_lo
,
msr_hi
,
mult
;
u32
msr_lo
,
msr_hi
,
mult
;
unsigned
int
fsb
=
0
;
unsigned
int
fsb
=
0
;
unsigned
int
ret
;
rdmsr
(
0x2c
,
msr_lo
,
msr_hi
);
rdmsr
(
0x2c
,
msr_lo
,
msr_hi
);
...
@@ -195,44 +206,47 @@ static unsigned int pentium4_get_frequency(void)
...
@@ -195,44 +206,47 @@ static unsigned int pentium4_get_frequency(void)
}
}
if
(
!
fsb
)
if
(
!
fsb
)
printk
(
KERN_DEBUG
"speedstep-lib: couldn't detect FSB speed. Please send an e-mail to <linux@brodo.de>
\n
"
);
printk
(
KERN_DEBUG
PFX
"couldn't detect FSB speed. "
"Please send an e-mail to <linux@brodo.de>
\n
"
);
/* Multiplier. */
/* Multiplier. */
mult
=
msr_lo
>>
24
;
mult
=
msr_lo
>>
24
;
dprintk
(
"P4 - FSB %u kHz; Multiplier %u; Speed %u kHz
\n
"
,
fsb
,
mult
,
(
fsb
*
mult
));
dprintk
(
"P4 - FSB %u kHz; Multiplier %u; Speed %u kHz
\n
"
,
fsb
,
mult
,
(
fsb
*
mult
));
return
(
fsb
*
mult
);
ret
=
(
fsb
*
mult
);
return
ret
;
}
}
unsigned
int
speedstep_get_
processor_
frequency
(
unsigned
int
processor
)
unsigned
int
speedstep_get_frequency
(
unsigned
int
processor
)
{
{
switch
(
processor
)
{
switch
(
processor
)
{
case
SPEEDSTEP_
PROCESSOR
_PCORE
:
case
SPEEDSTEP_
CPU
_PCORE
:
return
pentium_core_get_frequency
();
return
pentium_core_get_frequency
();
case
SPEEDSTEP_
PROCESSOR
_PM
:
case
SPEEDSTEP_
CPU
_PM
:
return
pentiumM_get_frequency
();
return
pentiumM_get_frequency
();
case
SPEEDSTEP_
PROCESSOR
_P4D
:
case
SPEEDSTEP_
CPU
_P4D
:
case
SPEEDSTEP_
PROCESSOR
_P4M
:
case
SPEEDSTEP_
CPU
_P4M
:
return
pentium4_get_frequency
();
return
pentium4_get_frequency
();
case
SPEEDSTEP_
PROCESSOR
_PIII_T
:
case
SPEEDSTEP_
CPU
_PIII_T
:
case
SPEEDSTEP_
PROCESSOR
_PIII_C
:
case
SPEEDSTEP_
CPU
_PIII_C
:
case
SPEEDSTEP_
PROCESSOR
_PIII_C_EARLY
:
case
SPEEDSTEP_
CPU
_PIII_C_EARLY
:
return
pentium3_get_frequency
(
processor
);
return
pentium3_get_frequency
(
processor
);
default:
default:
return
0
;
return
0
;
};
};
return
0
;
return
0
;
}
}
EXPORT_SYMBOL_GPL
(
speedstep_get_
processor_
frequency
);
EXPORT_SYMBOL_GPL
(
speedstep_get_frequency
);
/*********************************************************************
/*********************************************************************
* DETECT SPEEDSTEP-CAPABLE PROCESSOR *
* DETECT SPEEDSTEP-CAPABLE PROCESSOR *
*********************************************************************/
*********************************************************************/
unsigned
int
speedstep_detect_processor
(
void
)
unsigned
int
speedstep_detect_processor
(
void
)
{
{
struct
cpuinfo_x86
*
c
=
&
cpu_data
(
0
);
struct
cpuinfo_x86
*
c
=
&
cpu_data
(
0
);
u32
ebx
,
msr_lo
,
msr_hi
;
u32
ebx
,
msr_lo
,
msr_hi
;
...
@@ -261,7 +275,7 @@ unsigned int speedstep_detect_processor (void)
...
@@ -261,7 +275,7 @@ unsigned int speedstep_detect_processor (void)
* sample has ebx = 0x0f, production has 0x0e.
* sample has ebx = 0x0f, production has 0x0e.
*/
*/
if
((
ebx
==
0x0e
)
||
(
ebx
==
0x0f
))
if
((
ebx
==
0x0e
)
||
(
ebx
==
0x0f
))
return
SPEEDSTEP_
PROCESSOR
_P4M
;
return
SPEEDSTEP_
CPU
_P4M
;
break
;
break
;
case
7
:
case
7
:
/*
/*
...
@@ -272,7 +286,7 @@ unsigned int speedstep_detect_processor (void)
...
@@ -272,7 +286,7 @@ unsigned int speedstep_detect_processor (void)
* samples are only of B-stepping...
* samples are only of B-stepping...
*/
*/
if
(
ebx
==
0x0e
)
if
(
ebx
==
0x0e
)
return
SPEEDSTEP_
PROCESSOR
_P4M
;
return
SPEEDSTEP_
CPU
_P4M
;
break
;
break
;
case
9
:
case
9
:
/*
/*
...
@@ -288,10 +302,13 @@ unsigned int speedstep_detect_processor (void)
...
@@ -288,10 +302,13 @@ unsigned int speedstep_detect_processor (void)
* M-P4-Ms may have either ebx=0xe or 0xf [see above]
* M-P4-Ms may have either ebx=0xe or 0xf [see above]
* M-P4/533 have either ebx=0xe or 0xf. [25317607.pdf]
* M-P4/533 have either ebx=0xe or 0xf. [25317607.pdf]
* also, M-P4M HTs have ebx=0x8, too
* also, M-P4M HTs have ebx=0x8, too
* For now, they are distinguished by the model_id string
* For now, they are distinguished by the model_id
* string
*/
*/
if
((
ebx
==
0x0e
)
||
(
strstr
(
c
->
x86_model_id
,
"Mobile Intel(R) Pentium(R) 4"
)
!=
NULL
))
if
((
ebx
==
0x0e
)
||
return
SPEEDSTEP_PROCESSOR_P4M
;
(
strstr
(
c
->
x86_model_id
,
"Mobile Intel(R) Pentium(R) 4"
)
!=
NULL
))
return
SPEEDSTEP_CPU_P4M
;
break
;
break
;
default:
default:
break
;
break
;
...
@@ -301,7 +318,8 @@ unsigned int speedstep_detect_processor (void)
...
@@ -301,7 +318,8 @@ unsigned int speedstep_detect_processor (void)
switch
(
c
->
x86_model
)
{
switch
(
c
->
x86_model
)
{
case
0x0B
:
/* Intel PIII [Tualatin] */
case
0x0B
:
/* Intel PIII [Tualatin] */
/* cpuid_ebx(1) is 0x04 for desktop PIII, 0x06 for mobile PIII-M */
/* cpuid_ebx(1) is 0x04 for desktop PIII,
* 0x06 for mobile PIII-M */
ebx
=
cpuid_ebx
(
0x00000001
);
ebx
=
cpuid_ebx
(
0x00000001
);
dprintk
(
"ebx is %x
\n
"
,
ebx
);
dprintk
(
"ebx is %x
\n
"
,
ebx
);
...
@@ -313,14 +331,15 @@ unsigned int speedstep_detect_processor (void)
...
@@ -313,14 +331,15 @@ unsigned int speedstep_detect_processor (void)
/* So far all PIII-M processors support SpeedStep. See
/* So far all PIII-M processors support SpeedStep. See
* Intel's 24540640.pdf of June 2003
* Intel's 24540640.pdf of June 2003
*/
*/
return
SPEEDSTEP_
PROCESSOR
_PIII_T
;
return
SPEEDSTEP_
CPU
_PIII_T
;
case
0x08
:
/* Intel PIII [Coppermine] */
case
0x08
:
/* Intel PIII [Coppermine] */
/* all mobile PIII Coppermines have FSB 100 MHz
/* all mobile PIII Coppermines have FSB 100 MHz
* ==> sort out a few desktop PIIIs. */
* ==> sort out a few desktop PIIIs. */
rdmsr
(
MSR_IA32_EBL_CR_POWERON
,
msr_lo
,
msr_hi
);
rdmsr
(
MSR_IA32_EBL_CR_POWERON
,
msr_lo
,
msr_hi
);
dprintk
(
"Coppermine: MSR_IA32_EBL_CR_POWERON is 0x%x, 0x%x
\n
"
,
msr_lo
,
msr_hi
);
dprintk
(
"Coppermine: MSR_IA32_EBL_CR_POWERON is 0x%x, 0x%x
\n
"
,
msr_lo
,
msr_hi
);
msr_lo
&=
0x00c0000
;
msr_lo
&=
0x00c0000
;
if
(
msr_lo
!=
0x0080000
)
if
(
msr_lo
!=
0x0080000
)
return
0
;
return
0
;
...
@@ -332,13 +351,15 @@ unsigned int speedstep_detect_processor (void)
...
@@ -332,13 +351,15 @@ unsigned int speedstep_detect_processor (void)
* bit 56 or 57 is set
* bit 56 or 57 is set
*/
*/
rdmsr
(
MSR_IA32_PLATFORM_ID
,
msr_lo
,
msr_hi
);
rdmsr
(
MSR_IA32_PLATFORM_ID
,
msr_lo
,
msr_hi
);
dprintk
(
"Coppermine: MSR_IA32_PLATFORM ID is 0x%x, 0x%x
\n
"
,
msr_lo
,
msr_hi
);
dprintk
(
"Coppermine: MSR_IA32_PLATFORM ID is 0x%x, 0x%x
\n
"
,
if
((
msr_hi
&
(
1
<<
18
))
&&
(
relaxed_check
?
1
:
(
msr_hi
&
(
3
<<
24
))))
{
msr_lo
,
msr_hi
);
if
((
msr_hi
&
(
1
<<
18
))
&&
(
relaxed_check
?
1
:
(
msr_hi
&
(
3
<<
24
))))
{
if
(
c
->
x86_mask
==
0x01
)
{
if
(
c
->
x86_mask
==
0x01
)
{
dprintk
(
"early PIII version
\n
"
);
dprintk
(
"early PIII version
\n
"
);
return
SPEEDSTEP_
PROCESSOR
_PIII_C_EARLY
;
return
SPEEDSTEP_
CPU
_PIII_C_EARLY
;
}
else
}
else
return
SPEEDSTEP_
PROCESSOR
_PIII_C
;
return
SPEEDSTEP_
CPU
_PIII_C
;
}
}
default:
default:
...
@@ -369,7 +390,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
...
@@ -369,7 +390,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
dprintk
(
"trying to determine both speeds
\n
"
);
dprintk
(
"trying to determine both speeds
\n
"
);
/* get current speed */
/* get current speed */
prev_speed
=
speedstep_get_
processor_
frequency
(
processor
);
prev_speed
=
speedstep_get_frequency
(
processor
);
if
(
!
prev_speed
)
if
(
!
prev_speed
)
return
-
EIO
;
return
-
EIO
;
...
@@ -379,7 +400,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
...
@@ -379,7 +400,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
/* switch to low state */
/* switch to low state */
set_state
(
SPEEDSTEP_LOW
);
set_state
(
SPEEDSTEP_LOW
);
*
low_speed
=
speedstep_get_
processor_
frequency
(
processor
);
*
low_speed
=
speedstep_get_frequency
(
processor
);
if
(
!*
low_speed
)
{
if
(
!*
low_speed
)
{
ret
=
-
EIO
;
ret
=
-
EIO
;
goto
out
;
goto
out
;
...
@@ -398,7 +419,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
...
@@ -398,7 +419,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
if
(
transition_latency
)
if
(
transition_latency
)
do_gettimeofday
(
&
tv2
);
do_gettimeofday
(
&
tv2
);
*
high_speed
=
speedstep_get_
processor_
frequency
(
processor
);
*
high_speed
=
speedstep_get_frequency
(
processor
);
if
(
!*
high_speed
)
{
if
(
!*
high_speed
)
{
ret
=
-
EIO
;
ret
=
-
EIO
;
goto
out
;
goto
out
;
...
@@ -426,9 +447,12 @@ unsigned int speedstep_get_freqs(unsigned int processor,
...
@@ -426,9 +447,12 @@ unsigned int speedstep_get_freqs(unsigned int processor,
/* check if the latency measurement is too high or too low
/* check if the latency measurement is too high or too low
* and set it to a safe value (500uSec) in that case
* and set it to a safe value (500uSec) in that case
*/
*/
if
(
*
transition_latency
>
10000000
||
*
transition_latency
<
50000
)
{
if
(
*
transition_latency
>
10000000
||
printk
(
KERN_WARNING
"speedstep: frequency transition measured seems out of "
*
transition_latency
<
50000
)
{
"range (%u nSec), falling back to a safe one of %u nSec.
\n
"
,
printk
(
KERN_WARNING
PFX
"frequency transition "
"measured seems out of range (%u "
"nSec), falling back to a safe one of"
"%u nSec.
\n
"
,
*
transition_latency
,
500000
);
*
transition_latency
,
500000
);
*
transition_latency
=
500000
;
*
transition_latency
=
500000
;
}
}
...
@@ -436,15 +460,16 @@ unsigned int speedstep_get_freqs(unsigned int processor,
...
@@ -436,15 +460,16 @@ unsigned int speedstep_get_freqs(unsigned int processor,
out:
out:
local_irq_restore
(
flags
);
local_irq_restore
(
flags
);
return
(
ret
)
;
return
ret
;
}
}
EXPORT_SYMBOL_GPL
(
speedstep_get_freqs
);
EXPORT_SYMBOL_GPL
(
speedstep_get_freqs
);
#ifdef CONFIG_X86_SPEEDSTEP_RELAXED_CAP_CHECK
#ifdef CONFIG_X86_SPEEDSTEP_RELAXED_CAP_CHECK
module_param
(
relaxed_check
,
int
,
0444
);
module_param
(
relaxed_check
,
int
,
0444
);
MODULE_PARM_DESC
(
relaxed_check
,
"Don't do all checks for speedstep capability."
);
MODULE_PARM_DESC
(
relaxed_check
,
"Don't do all checks for speedstep capability."
);
#endif
#endif
MODULE_AUTHOR
(
"Dominik Brodowski <linux@brodo.de>"
);
MODULE_AUTHOR
(
"Dominik Brodowski <linux@brodo.de>"
);
MODULE_DESCRIPTION
(
"Library for Intel SpeedStep 1 or 2 cpufreq drivers."
);
MODULE_DESCRIPTION
(
"Library for Intel SpeedStep 1 or 2 cpufreq drivers."
);
MODULE_LICENSE
(
"GPL"
);
MODULE_LICENSE
(
"GPL"
);
arch/x86/kernel/cpu/cpufreq/speedstep-lib.h
View file @
bbfebd66
...
@@ -12,17 +12,17 @@
...
@@ -12,17 +12,17 @@
/* processors */
/* processors */
#define SPEEDSTEP_
PROCESSOR
_PIII_C_EARLY 0x00000001
/* Coppermine core */
#define SPEEDSTEP_
CPU
_PIII_C_EARLY 0x00000001
/* Coppermine core */
#define SPEEDSTEP_
PROCESSOR
_PIII_C 0x00000002
/* Coppermine core */
#define SPEEDSTEP_
CPU
_PIII_C 0x00000002
/* Coppermine core */
#define SPEEDSTEP_
PROCESSOR
_PIII_T 0x00000003
/* Tualatin core */
#define SPEEDSTEP_
CPU
_PIII_T 0x00000003
/* Tualatin core */
#define SPEEDSTEP_
PROCESSOR_P4M
0x00000004
/* P4-M */
#define SPEEDSTEP_
CPU_P4M
0x00000004
/* P4-M */
/* the following processors are not speedstep-capable and are not auto-detected
/* the following processors are not speedstep-capable and are not auto-detected
* in speedstep_detect_processor(). However, their speed can be detected using
* in speedstep_detect_processor(). However, their speed can be detected using
* the speedstep_get_
processor_
frequency() call. */
* the speedstep_get_frequency() call. */
#define SPEEDSTEP_
PROCESSOR_PM
0xFFFFFF03
/* Pentium M */
#define SPEEDSTEP_
CPU_PM
0xFFFFFF03
/* Pentium M */
#define SPEEDSTEP_
PROCESSOR_P4D
0xFFFFFF04
/* desktop P4 */
#define SPEEDSTEP_
CPU_P4D
0xFFFFFF04
/* desktop P4 */
#define SPEEDSTEP_
PROCESSOR
_PCORE 0xFFFFFF05
/* Core */
#define SPEEDSTEP_
CPU
_PCORE 0xFFFFFF05
/* Core */
/* speedstep states -- only two of them */
/* speedstep states -- only two of them */
...
@@ -34,7 +34,7 @@
...
@@ -34,7 +34,7 @@
extern
unsigned
int
speedstep_detect_processor
(
void
);
extern
unsigned
int
speedstep_detect_processor
(
void
);
/* detect the current speed (in khz) of the processor */
/* detect the current speed (in khz) of the processor */
extern
unsigned
int
speedstep_get_
processor_
frequency
(
unsigned
int
processor
);
extern
unsigned
int
speedstep_get_frequency
(
unsigned
int
processor
);
/* detect the low and high speeds of the processor. The callback
/* detect the low and high speeds of the processor. The callback
...
...
arch/x86/kernel/cpu/cpufreq/speedstep-smi.c
View file @
bbfebd66
...
@@ -19,8 +19,8 @@
...
@@ -19,8 +19,8 @@
#include <linux/cpufreq.h>
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <asm/ist.h>
#include <asm/ist.h>
#include <asm/io.h>
#include "speedstep-lib.h"
#include "speedstep-lib.h"
...
@@ -30,12 +30,12 @@
...
@@ -30,12 +30,12 @@
* If user gives it, these are used.
* If user gives it, these are used.
*
*
*/
*/
static
int
smi_port
=
0
;
static
int
smi_port
;
static
int
smi_cmd
=
0
;
static
int
smi_cmd
;
static
unsigned
int
smi_sig
=
0
;
static
unsigned
int
smi_sig
;
/* info about the processor */
/* info about the processor */
static
unsigned
int
speedstep_processor
=
0
;
static
unsigned
int
speedstep_processor
;
/*
/*
* There are only two frequency states for each processor. Values
* There are only two frequency states for each processor. Values
...
@@ -56,12 +56,13 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
...
@@ -56,12 +56,13 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
* of DMA activity going on? */
* of DMA activity going on? */
#define SMI_TRIES 5
#define SMI_TRIES 5
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "speedstep-smi", msg)
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \
"speedstep-smi", msg)
/**
/**
* speedstep_smi_ownership
* speedstep_smi_ownership
*/
*/
static
int
speedstep_smi_ownership
(
void
)
static
int
speedstep_smi_ownership
(
void
)
{
{
u32
command
,
result
,
magic
,
dummy
;
u32
command
,
result
,
magic
,
dummy
;
u32
function
=
GET_SPEEDSTEP_OWNER
;
u32
function
=
GET_SPEEDSTEP_OWNER
;
...
@@ -70,13 +71,15 @@ static int speedstep_smi_ownership (void)
...
@@ -70,13 +71,15 @@ static int speedstep_smi_ownership (void)
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
magic
=
virt_to_phys
(
magic_data
);
magic
=
virt_to_phys
(
magic_data
);
dprintk
(
"trying to obtain ownership with command %x at port %x
\n
"
,
command
,
smi_port
);
dprintk
(
"trying to obtain ownership with command %x at port %x
\n
"
,
command
,
smi_port
);
__asm__
__volatile__
(
__asm__
__volatile__
(
"push %%ebp
\n
"
"push %%ebp
\n
"
"out %%al, (%%dx)
\n
"
"out %%al, (%%dx)
\n
"
"pop %%ebp
\n
"
"pop %%ebp
\n
"
:
"=D"
(
result
),
"=a"
(
dummy
),
"=b"
(
dummy
),
"=c"
(
dummy
),
"=d"
(
dummy
),
:
"=D"
(
result
),
"=a"
(
dummy
),
"=b"
(
dummy
),
"=c"
(
dummy
),
"=d"
(
dummy
),
"=S"
(
dummy
)
"=S"
(
dummy
)
:
"a"
(
command
),
"b"
(
function
),
"c"
(
0
),
"d"
(
smi_port
),
:
"a"
(
command
),
"b"
(
function
),
"c"
(
0
),
"d"
(
smi_port
),
"D"
(
0
),
"S"
(
magic
)
"D"
(
0
),
"S"
(
magic
)
...
@@ -97,10 +100,10 @@ static int speedstep_smi_ownership (void)
...
@@ -97,10 +100,10 @@ static int speedstep_smi_ownership (void)
* even hangs [cf. bugme.osdl.org # 1422] on earlier systems. Empirical testing
* even hangs [cf. bugme.osdl.org # 1422] on earlier systems. Empirical testing
* shows that the latter occurs if !(ist_info.event & 0xFFFF).
* shows that the latter occurs if !(ist_info.event & 0xFFFF).
*/
*/
static
int
speedstep_smi_get_freqs
(
unsigned
int
*
low
,
unsigned
int
*
high
)
static
int
speedstep_smi_get_freqs
(
unsigned
int
*
low
,
unsigned
int
*
high
)
{
{
u32
command
,
result
=
0
,
edi
,
high_mhz
,
low_mhz
,
dummy
;
u32
command
,
result
=
0
,
edi
,
high_mhz
,
low_mhz
,
dummy
;
u32
state
=
0
;
u32
state
=
0
;
u32
function
=
GET_SPEEDSTEP_FREQS
;
u32
function
=
GET_SPEEDSTEP_FREQS
;
if
(
!
(
ist_info
.
event
&
0xFFFF
))
{
if
(
!
(
ist_info
.
event
&
0xFFFF
))
{
...
@@ -110,17 +113,25 @@ static int speedstep_smi_get_freqs (unsigned int *low, unsigned int *high)
...
@@ -110,17 +113,25 @@ static int speedstep_smi_get_freqs (unsigned int *low, unsigned int *high)
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
dprintk
(
"trying to determine frequencies with command %x at port %x
\n
"
,
command
,
smi_port
);
dprintk
(
"trying to determine frequencies with command %x at port %x
\n
"
,
command
,
smi_port
);
__asm__
__volatile__
(
__asm__
__volatile__
(
"push %%ebp
\n
"
"push %%ebp
\n
"
"out %%al, (%%dx)
\n
"
"out %%al, (%%dx)
\n
"
"pop %%ebp"
"pop %%ebp"
:
"=a"
(
result
),
"=b"
(
high_mhz
),
"=c"
(
low_mhz
),
"=d"
(
state
),
"=D"
(
edi
),
"=S"
(
dummy
)
:
"=a"
(
result
),
:
"a"
(
command
),
"b"
(
function
),
"c"
(
state
),
"d"
(
smi_port
),
"S"
(
0
),
"D"
(
0
)
"=b"
(
high_mhz
),
"=c"
(
low_mhz
),
"=d"
(
state
),
"=D"
(
edi
),
"=S"
(
dummy
)
:
"a"
(
command
),
"b"
(
function
),
"c"
(
state
),
"d"
(
smi_port
),
"S"
(
0
),
"D"
(
0
)
);
);
dprintk
(
"result %x, low_freq %u, high_freq %u
\n
"
,
result
,
low_mhz
,
high_mhz
);
dprintk
(
"result %x, low_freq %u, high_freq %u
\n
"
,
result
,
low_mhz
,
high_mhz
);
/* abort if results are obviously incorrect... */
/* abort if results are obviously incorrect... */
if
((
high_mhz
+
low_mhz
)
<
600
)
if
((
high_mhz
+
low_mhz
)
<
600
)
...
@@ -137,26 +148,30 @@ static int speedstep_smi_get_freqs (unsigned int *low, unsigned int *high)
...
@@ -137,26 +148,30 @@ static int speedstep_smi_get_freqs (unsigned int *low, unsigned int *high)
* @state: processor frequency state (SPEEDSTEP_LOW or SPEEDSTEP_HIGH)
* @state: processor frequency state (SPEEDSTEP_LOW or SPEEDSTEP_HIGH)
*
*
*/
*/
static
int
speedstep_get_state
(
void
)
static
int
speedstep_get_state
(
void
)
{
{
u32
function
=
GET_SPEEDSTEP_STATE
;
u32
function
=
GET_SPEEDSTEP_STATE
;
u32
result
,
state
,
edi
,
command
,
dummy
;
u32
result
,
state
,
edi
,
command
,
dummy
;
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
dprintk
(
"trying to determine current setting with command %x at port %x
\n
"
,
command
,
smi_port
);
dprintk
(
"trying to determine current setting with command %x "
"at port %x
\n
"
,
command
,
smi_port
);
__asm__
__volatile__
(
__asm__
__volatile__
(
"push %%ebp
\n
"
"push %%ebp
\n
"
"out %%al, (%%dx)
\n
"
"out %%al, (%%dx)
\n
"
"pop %%ebp
\n
"
"pop %%ebp
\n
"
:
"=a"
(
result
),
"=b"
(
state
),
"=D"
(
edi
),
"=c"
(
dummy
),
"=d"
(
dummy
),
"=S"
(
dummy
)
:
"=a"
(
result
),
:
"a"
(
command
),
"b"
(
function
),
"c"
(
0
),
"d"
(
smi_port
),
"S"
(
0
),
"D"
(
0
)
"=b"
(
state
),
"=D"
(
edi
),
"=c"
(
dummy
),
"=d"
(
dummy
),
"=S"
(
dummy
)
:
"a"
(
command
),
"b"
(
function
),
"c"
(
0
),
"d"
(
smi_port
),
"S"
(
0
),
"D"
(
0
)
);
);
dprintk
(
"state is %x, result is %x
\n
"
,
state
,
result
);
dprintk
(
"state is %x, result is %x
\n
"
,
state
,
result
);
return
(
state
&
1
)
;
return
state
&
1
;
}
}
...
@@ -165,11 +180,11 @@ static int speedstep_get_state (void)
...
@@ -165,11 +180,11 @@ static int speedstep_get_state (void)
* @state: new processor frequency state (SPEEDSTEP_LOW or SPEEDSTEP_HIGH)
* @state: new processor frequency state (SPEEDSTEP_LOW or SPEEDSTEP_HIGH)
*
*
*/
*/
static
void
speedstep_set_state
(
unsigned
int
state
)
static
void
speedstep_set_state
(
unsigned
int
state
)
{
{
unsigned
int
result
=
0
,
command
,
new_state
,
dummy
;
unsigned
int
result
=
0
,
command
,
new_state
,
dummy
;
unsigned
long
flags
;
unsigned
long
flags
;
unsigned
int
function
=
SET_SPEEDSTEP_STATE
;
unsigned
int
function
=
SET_SPEEDSTEP_STATE
;
unsigned
int
retry
=
0
;
unsigned
int
retry
=
0
;
if
(
state
>
0x1
)
if
(
state
>
0x1
)
...
@@ -180,11 +195,14 @@ static void speedstep_set_state (unsigned int state)
...
@@ -180,11 +195,14 @@ static void speedstep_set_state (unsigned int state)
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
command
=
(
smi_sig
&
0xffffff00
)
|
(
smi_cmd
&
0xff
);
dprintk
(
"trying to set frequency to state %u with command %x at port %x
\n
"
,
state
,
command
,
smi_port
);
dprintk
(
"trying to set frequency to state %u "
"with command %x at port %x
\n
"
,
state
,
command
,
smi_port
);
do
{
do
{
if
(
retry
)
{
if
(
retry
)
{
dprintk
(
"retry %u, previous result %u, waiting...
\n
"
,
retry
,
result
);
dprintk
(
"retry %u, previous result %u, waiting...
\n
"
,
retry
,
result
);
mdelay
(
retry
*
50
);
mdelay
(
retry
*
50
);
}
}
retry
++
;
retry
++
;
...
@@ -192,20 +210,26 @@ static void speedstep_set_state (unsigned int state)
...
@@ -192,20 +210,26 @@ static void speedstep_set_state (unsigned int state)
"push %%ebp
\n
"
"push %%ebp
\n
"
"out %%al, (%%dx)
\n
"
"out %%al, (%%dx)
\n
"
"pop %%ebp"
"pop %%ebp"
:
"=b"
(
new_state
),
"=D"
(
result
),
"=c"
(
dummy
),
"=a"
(
dummy
),
:
"=b"
(
new_state
),
"=D"
(
result
),
"=c"
(
dummy
),
"=a"
(
dummy
),
"=d"
(
dummy
),
"=S"
(
dummy
)
"=d"
(
dummy
),
"=S"
(
dummy
)
:
"a"
(
command
),
"b"
(
function
),
"c"
(
state
),
"d"
(
smi_port
),
"S"
(
0
),
"D"
(
0
)
:
"a"
(
command
),
"b"
(
function
),
"c"
(
state
),
"d"
(
smi_port
),
"S"
(
0
),
"D"
(
0
)
);
);
}
while
((
new_state
!=
state
)
&&
(
retry
<=
SMI_TRIES
));
}
while
((
new_state
!=
state
)
&&
(
retry
<=
SMI_TRIES
));
/* enable IRQs */
/* enable IRQs */
local_irq_restore
(
flags
);
local_irq_restore
(
flags
);
if
(
new_state
==
state
)
{
if
(
new_state
==
state
)
dprintk
(
"change to %u MHz succeeded after %u tries with result %u
\n
"
,
(
speedstep_freqs
[
new_state
].
frequency
/
1000
),
retry
,
result
);
dprintk
(
"change to %u MHz succeeded after %u tries "
}
else
{
"with result %u
\n
"
,
printk
(
KERN_ERR
"cpufreq: change to state %u failed with new_state %u and result %u
\n
"
,
state
,
new_state
,
result
);
(
speedstep_freqs
[
new_state
].
frequency
/
1000
),
}
retry
,
result
);
else
printk
(
KERN_ERR
"cpufreq: change to state %u "
"failed with new_state %u and result %u
\n
"
,
state
,
new_state
,
result
);
return
;
return
;
}
}
...
@@ -219,13 +243,14 @@ static void speedstep_set_state (unsigned int state)
...
@@ -219,13 +243,14 @@ static void speedstep_set_state (unsigned int state)
*
*
* Sets a new CPUFreq policy/freq.
* Sets a new CPUFreq policy/freq.
*/
*/
static
int
speedstep_target
(
struct
cpufreq_policy
*
policy
,
static
int
speedstep_target
(
struct
cpufreq_policy
*
policy
,
unsigned
int
target_freq
,
unsigned
int
relation
)
unsigned
int
target_freq
,
unsigned
int
relation
)
{
{
unsigned
int
newstate
=
0
;
unsigned
int
newstate
=
0
;
struct
cpufreq_freqs
freqs
;
struct
cpufreq_freqs
freqs
;
if
(
cpufreq_frequency_table_target
(
policy
,
&
speedstep_freqs
[
0
],
target_freq
,
relation
,
&
newstate
))
if
(
cpufreq_frequency_table_target
(
policy
,
&
speedstep_freqs
[
0
],
target_freq
,
relation
,
&
newstate
))
return
-
EINVAL
;
return
-
EINVAL
;
freqs
.
old
=
speedstep_freqs
[
speedstep_get_state
()].
frequency
;
freqs
.
old
=
speedstep_freqs
[
speedstep_get_state
()].
frequency
;
...
@@ -250,7 +275,7 @@ static int speedstep_target (struct cpufreq_policy *policy,
...
@@ -250,7 +275,7 @@ static int speedstep_target (struct cpufreq_policy *policy,
* Limit must be within speedstep_low_freq and speedstep_high_freq, with
* Limit must be within speedstep_low_freq and speedstep_high_freq, with
* at least one border included.
* at least one border included.
*/
*/
static
int
speedstep_verify
(
struct
cpufreq_policy
*
policy
)
static
int
speedstep_verify
(
struct
cpufreq_policy
*
policy
)
{
{
return
cpufreq_frequency_table_verify
(
policy
,
&
speedstep_freqs
[
0
]);
return
cpufreq_frequency_table_verify
(
policy
,
&
speedstep_freqs
[
0
]);
}
}
...
@@ -259,7 +284,8 @@ static int speedstep_verify (struct cpufreq_policy *policy)
...
@@ -259,7 +284,8 @@ static int speedstep_verify (struct cpufreq_policy *policy)
static
int
speedstep_cpu_init
(
struct
cpufreq_policy
*
policy
)
static
int
speedstep_cpu_init
(
struct
cpufreq_policy
*
policy
)
{
{
int
result
;
int
result
;
unsigned
int
speed
,
state
;
unsigned
int
speed
,
state
;
unsigned
int
*
low
,
*
high
;
/* capability check */
/* capability check */
if
(
policy
->
cpu
!=
0
)
if
(
policy
->
cpu
!=
0
)
...
@@ -272,19 +298,23 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
...
@@ -272,19 +298,23 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
}
}
/* detect low and high frequency */
/* detect low and high frequency */
result
=
speedstep_smi_get_freqs
(
&
speedstep_freqs
[
SPEEDSTEP_LOW
].
frequency
,
low
=
&
speedstep_freqs
[
SPEEDSTEP_LOW
].
frequency
;
&
speedstep_freqs
[
SPEEDSTEP_HIGH
].
frequency
);
high
=
&
speedstep_freqs
[
SPEEDSTEP_HIGH
].
frequency
;
result
=
speedstep_smi_get_freqs
(
low
,
high
);
if
(
result
)
{
if
(
result
)
{
/* fall back to speedstep_lib.c dection mechanism: try both states out */
/* fall back to speedstep_lib.c dection mechanism:
dprintk
(
"could not detect low and high frequencies by SMI call.
\n
"
);
* try both states out */
dprintk
(
"could not detect low and high frequencies "
"by SMI call.
\n
"
);
result
=
speedstep_get_freqs
(
speedstep_processor
,
result
=
speedstep_get_freqs
(
speedstep_processor
,
&
speedstep_freqs
[
SPEEDSTEP_LOW
].
frequency
,
low
,
high
,
&
speedstep_freqs
[
SPEEDSTEP_HIGH
].
frequency
,
NULL
,
NULL
,
&
speedstep_set_state
);
&
speedstep_set_state
);
if
(
result
)
{
if
(
result
)
{
dprintk
(
"could not detect two different speeds -- aborting.
\n
"
);
dprintk
(
"could not detect two different speeds"
" -- aborting.
\n
"
);
return
result
;
return
result
;
}
else
}
else
dprintk
(
"workaround worked.
\n
"
);
dprintk
(
"workaround worked.
\n
"
);
...
@@ -295,7 +325,8 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
...
@@ -295,7 +325,8 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
speed
=
speedstep_freqs
[
state
].
frequency
;
speed
=
speedstep_freqs
[
state
].
frequency
;
dprintk
(
"currently at %s speed setting - %i MHz
\n
"
,
dprintk
(
"currently at %s speed setting - %i MHz
\n
"
,
(
speed
==
speedstep_freqs
[
SPEEDSTEP_LOW
].
frequency
)
?
"low"
:
"high"
,
(
speed
==
speedstep_freqs
[
SPEEDSTEP_LOW
].
frequency
)
?
"low"
:
"high"
,
(
speed
/
1000
));
(
speed
/
1000
));
/* cpuinfo and default policy values */
/* cpuinfo and default policy values */
...
@@ -304,7 +335,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
...
@@ -304,7 +335,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
result
=
cpufreq_frequency_table_cpuinfo
(
policy
,
speedstep_freqs
);
result
=
cpufreq_frequency_table_cpuinfo
(
policy
,
speedstep_freqs
);
if
(
result
)
if
(
result
)
return
(
result
)
;
return
result
;
cpufreq_frequency_table_get_attr
(
speedstep_freqs
,
policy
->
cpu
);
cpufreq_frequency_table_get_attr
(
speedstep_freqs
,
policy
->
cpu
);
...
@@ -321,7 +352,7 @@ static unsigned int speedstep_get(unsigned int cpu)
...
@@ -321,7 +352,7 @@ static unsigned int speedstep_get(unsigned int cpu)
{
{
if
(
cpu
)
if
(
cpu
)
return
-
ENODEV
;
return
-
ENODEV
;
return
speedstep_get_
processor_
frequency
(
speedstep_processor
);
return
speedstep_get_frequency
(
speedstep_processor
);
}
}
...
@@ -335,7 +366,7 @@ static int speedstep_resume(struct cpufreq_policy *policy)
...
@@ -335,7 +366,7 @@ static int speedstep_resume(struct cpufreq_policy *policy)
return
result
;
return
result
;
}
}
static
struct
freq_attr
*
speedstep_attr
[]
=
{
static
struct
freq_attr
*
speedstep_attr
[]
=
{
&
cpufreq_freq_attr_scaling_available_freqs
,
&
cpufreq_freq_attr_scaling_available_freqs
,
NULL
,
NULL
,
};
};
...
@@ -364,21 +395,23 @@ static int __init speedstep_init(void)
...
@@ -364,21 +395,23 @@ static int __init speedstep_init(void)
speedstep_processor
=
speedstep_detect_processor
();
speedstep_processor
=
speedstep_detect_processor
();
switch
(
speedstep_processor
)
{
switch
(
speedstep_processor
)
{
case
SPEEDSTEP_
PROCESSOR
_PIII_T
:
case
SPEEDSTEP_
CPU
_PIII_T
:
case
SPEEDSTEP_
PROCESSOR
_PIII_C
:
case
SPEEDSTEP_
CPU
_PIII_C
:
case
SPEEDSTEP_
PROCESSOR
_PIII_C_EARLY
:
case
SPEEDSTEP_
CPU
_PIII_C_EARLY
:
break
;
break
;
default:
default:
speedstep_processor
=
0
;
speedstep_processor
=
0
;
}
}
if
(
!
speedstep_processor
)
{
if
(
!
speedstep_processor
)
{
dprintk
(
"No supported Intel CPU detected.
\n
"
);
dprintk
(
"No supported Intel CPU detected.
\n
"
);
return
-
ENODEV
;
return
-
ENODEV
;
}
}
dprintk
(
"signature:0x%.8lx, command:0x%.8lx, event:0x%.8lx, perf_level:0x%.8lx.
\n
"
,
dprintk
(
"signature:0x%.8lx, command:0x%.8lx, "
ist_info
.
signature
,
ist_info
.
command
,
ist_info
.
event
,
ist_info
.
perf_level
);
"event:0x%.8lx, perf_level:0x%.8lx.
\n
"
,
ist_info
.
signature
,
ist_info
.
command
,
ist_info
.
event
,
ist_info
.
perf_level
);
/* Error if no IST-SMI BIOS or no PARM
/* Error if no IST-SMI BIOS or no PARM
sig= 'ISGE' aka 'Intel Speedstep Gate E' */
sig= 'ISGE' aka 'Intel Speedstep Gate E' */
...
@@ -420,13 +453,16 @@ module_param(smi_port, int, 0444);
...
@@ -420,13 +453,16 @@ module_param(smi_port, int, 0444);
module_param
(
smi_cmd
,
int
,
0444
);
module_param
(
smi_cmd
,
int
,
0444
);
module_param
(
smi_sig
,
uint
,
0444
);
module_param
(
smi_sig
,
uint
,
0444
);
MODULE_PARM_DESC
(
smi_port
,
"Override the BIOS-given IST port with this value -- Intel's default setting is 0xb2"
);
MODULE_PARM_DESC
(
smi_port
,
"Override the BIOS-given IST port with this value "
MODULE_PARM_DESC
(
smi_cmd
,
"Override the BIOS-given IST command with this value -- Intel's default setting is 0x82"
);
"-- Intel's default setting is 0xb2"
);
MODULE_PARM_DESC
(
smi_sig
,
"Set to 1 to fake the IST signature when using the SMI interface."
);
MODULE_PARM_DESC
(
smi_cmd
,
"Override the BIOS-given IST command with this value "
"-- Intel's default setting is 0x82"
);
MODULE_PARM_DESC
(
smi_sig
,
"Set to 1 to fake the IST signature when using the "
"SMI interface."
);
MODULE_AUTHOR
(
"Hiroshi Miura"
);
MODULE_AUTHOR
(
"Hiroshi Miura"
);
MODULE_DESCRIPTION
(
"Speedstep driver for IST applet SMI interface."
);
MODULE_DESCRIPTION
(
"Speedstep driver for IST applet SMI interface."
);
MODULE_LICENSE
(
"GPL"
);
MODULE_LICENSE
(
"GPL"
);
module_init
(
speedstep_init
);
module_init
(
speedstep_init
);
module_exit
(
speedstep_exit
);
module_exit
(
speedstep_exit
);
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