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ac617bd0
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ac617bd0
编写于
1月 17, 2009
作者:
D
Dave Jones
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
[CPUFREQ] checkpatch cleanups for longhaul
Signed-off-by:
N
Dave Jones
<
davej@redhat.com
>
上级
00f6a235
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
100 addition
and
94 deletion
+100
-94
arch/x86/kernel/cpu/cpufreq/longhaul.c
arch/x86/kernel/cpu/cpufreq/longhaul.c
+94
-88
arch/x86/kernel/cpu/cpufreq/longhaul.h
arch/x86/kernel/cpu/cpufreq/longhaul.h
+6
-6
未找到文件。
arch/x86/kernel/cpu/cpufreq/longhaul.c
浏览文件 @
ac617bd0
...
...
@@ -30,12 +30,12 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/timex.h>
#include <linux/io.h>
#include <linux/acpi.h>
#include <linux/kernel.h>
#include <asm/msr.h>
#include <asm/timex.h>
#include <asm/io.h>
#include <asm/acpi.h>
#include <linux/acpi.h>
#include <acpi/processor.h>
#include "longhaul.h"
...
...
@@ -58,7 +58,7 @@
#define USE_NORTHBRIDGE (1 << 2)
static
int
cpu_model
;
static
unsigned
int
numscales
=
16
;
static
unsigned
int
numscales
=
16
;
static
unsigned
int
fsb
;
static
const
struct
mV_pos
*
vrm_mV_table
;
...
...
@@ -67,8 +67,8 @@ static const unsigned char *mV_vrm_table;
static
unsigned
int
highest_speed
,
lowest_speed
;
/* kHz */
static
unsigned
int
minmult
,
maxmult
;
static
int
can_scale_voltage
;
static
struct
acpi_processor
*
pr
=
NULL
;
static
struct
acpi_processor_cx
*
cx
=
NULL
;
static
struct
acpi_processor
*
pr
;
static
struct
acpi_processor_cx
*
cx
;
static
u32
acpi_regs_addr
;
static
u8
longhaul_flags
;
static
unsigned
int
longhaul_index
;
...
...
@@ -78,12 +78,13 @@ static int scale_voltage;
static
int
disable_acpi_c3
;
static
int
revid_errata
;
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "longhaul", msg)
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, \
"longhaul", msg)
/* Clock ratios multiplied by 10 */
static
int
clock_ratio
[
32
];
static
int
eblcr
_table
[
32
];
static
int
mults
[
32
];
static
int
eblcr
[
32
];
static
int
longhaul_version
;
static
struct
cpufreq_frequency_table
*
longhaul_table
;
...
...
@@ -93,7 +94,7 @@ static char speedbuffer[8];
static
char
*
print_speed
(
int
speed
)
{
if
(
speed
<
1000
)
{
snprintf
(
speedbuffer
,
sizeof
(
speedbuffer
),
"%dMHz"
,
speed
);
snprintf
(
speedbuffer
,
sizeof
(
speedbuffer
),
"%dMHz"
,
speed
);
return
speedbuffer
;
}
...
...
@@ -122,27 +123,28 @@ static unsigned int calc_speed(int mult)
static
int
longhaul_get_cpu_mult
(
void
)
{
unsigned
long
invalue
=
0
,
lo
,
hi
;
unsigned
long
invalue
=
0
,
lo
,
hi
;
rdmsr
(
MSR_IA32_EBL_CR_POWERON
,
lo
,
hi
);
invalue
=
(
lo
&
(
1
<<
22
|
1
<<
23
|
1
<<
24
|
1
<<
25
))
>>
22
;
if
(
longhaul_version
==
TYPE_LONGHAUL_V2
||
longhaul_version
==
TYPE_POWERSAVER
)
{
rdmsr
(
MSR_IA32_EBL_CR_POWERON
,
lo
,
hi
);
invalue
=
(
lo
&
(
1
<<
22
|
1
<<
23
|
1
<<
24
|
1
<<
25
))
>>
22
;
if
(
longhaul_version
==
TYPE_LONGHAUL_V2
||
longhaul_version
==
TYPE_POWERSAVER
)
{
if
(
lo
&
(
1
<<
27
))
invalue
+=
16
;
invalue
+=
16
;
}
return
eblcr
_table
[
invalue
];
return
eblcr
[
invalue
];
}
/* For processor with BCR2 MSR */
static
void
do_longhaul1
(
unsigned
int
clock_ratio
_index
)
static
void
do_longhaul1
(
unsigned
int
mults
_index
)
{
union
msr_bcr2
bcr2
;
rdmsrl
(
MSR_VIA_BCR2
,
bcr2
.
val
);
/* Enable software clock multiplier */
bcr2
.
bits
.
ESOFTBF
=
1
;
bcr2
.
bits
.
CLOCKMUL
=
clock_ratio
_index
&
0xff
;
bcr2
.
bits
.
CLOCKMUL
=
mults
_index
&
0xff
;
/* Sync to timer tick */
safe_halt
();
...
...
@@ -161,7 +163,7 @@ static void do_longhaul1(unsigned int clock_ratio_index)
/* For processor with Longhaul MSR */
static
void
do_powersaver
(
int
cx_address
,
unsigned
int
clock_ratio
_index
,
static
void
do_powersaver
(
int
cx_address
,
unsigned
int
mults
_index
,
unsigned
int
dir
)
{
union
msr_longhaul
longhaul
;
...
...
@@ -173,11 +175,11 @@ static void do_powersaver(int cx_address, unsigned int clock_ratio_index,
longhaul
.
bits
.
RevisionKey
=
longhaul
.
bits
.
RevisionID
;
else
longhaul
.
bits
.
RevisionKey
=
0
;
longhaul
.
bits
.
SoftBusRatio
=
clock_ratio
_index
&
0xf
;
longhaul
.
bits
.
SoftBusRatio4
=
(
clock_ratio
_index
&
0x10
)
>>
4
;
longhaul
.
bits
.
SoftBusRatio
=
mults
_index
&
0xf
;
longhaul
.
bits
.
SoftBusRatio4
=
(
mults
_index
&
0x10
)
>>
4
;
/* Setup new voltage */
if
(
can_scale_voltage
)
longhaul
.
bits
.
SoftVID
=
(
clock_ratio
_index
>>
8
)
&
0x1f
;
longhaul
.
bits
.
SoftVID
=
(
mults
_index
>>
8
)
&
0x1f
;
/* Sync to timer tick */
safe_halt
();
/* Raise voltage if necessary */
...
...
@@ -240,14 +242,14 @@ static void do_powersaver(int cx_address, unsigned int clock_ratio_index,
/**
* longhaul_set_cpu_frequency()
* @
clock_ratio
_index : bitpattern of the new multiplier.
* @
mults
_index : bitpattern of the new multiplier.
*
* Sets a new clock ratio.
*/
static
void
longhaul_setstate
(
unsigned
int
table_index
)
{
unsigned
int
clock_ratio
_index
;
unsigned
int
mults
_index
;
int
speed
,
mult
;
struct
cpufreq_freqs
freqs
;
unsigned
long
flags
;
...
...
@@ -256,9 +258,9 @@ static void longhaul_setstate(unsigned int table_index)
u32
bm_timeout
=
1000
;
unsigned
int
dir
=
0
;
clock_ratio
_index
=
longhaul_table
[
table_index
].
index
;
mults
_index
=
longhaul_table
[
table_index
].
index
;
/* Safety precautions */
mult
=
clock_ratio
[
clock_ratio
_index
&
0x1f
];
mult
=
mults
[
mults
_index
&
0x1f
];
if
(
mult
==
-
1
)
return
;
speed
=
calc_speed
(
mult
);
...
...
@@ -274,7 +276,7 @@ static void longhaul_setstate(unsigned int table_index)
cpufreq_notify_transition
(
&
freqs
,
CPUFREQ_PRECHANGE
);
dprintk
(
"Setting to FSB:%dMHz Mult:%d.%dx (%s)
\n
"
,
dprintk
(
"Setting to FSB:%dMHz Mult:%d.%dx (%s)
\n
"
,
fsb
,
mult
/
10
,
mult
%
10
,
print_speed
(
speed
/
1000
));
retry_loop:
preempt_disable
();
...
...
@@ -282,8 +284,8 @@ static void longhaul_setstate(unsigned int table_index)
pic2_mask
=
inb
(
0xA1
);
pic1_mask
=
inb
(
0x21
);
/* works on C3. save mask. */
outb
(
0xFF
,
0xA1
);
/* Overkill */
outb
(
0xFE
,
0x21
);
/* TMR0 only */
outb
(
0xFF
,
0xA1
);
/* Overkill */
outb
(
0xFE
,
0x21
);
/* TMR0 only */
/* Wait while PCI bus is busy. */
if
(
acpi_regs_addr
&&
(
longhaul_flags
&
USE_NORTHBRIDGE
...
...
@@ -312,7 +314,7 @@ static void longhaul_setstate(unsigned int table_index)
* Software controlled multipliers only.
*/
case
TYPE_LONGHAUL_V1
:
do_longhaul1
(
clock_ratio
_index
);
do_longhaul1
(
mults
_index
);
break
;
/*
...
...
@@ -327,9 +329,9 @@ static void longhaul_setstate(unsigned int table_index)
if
(
longhaul_flags
&
USE_ACPI_C3
)
{
/* Don't allow wakeup */
acpi_set_register
(
ACPI_BITREG_BUS_MASTER_RLD
,
0
);
do_powersaver
(
cx
->
address
,
clock_ratio
_index
,
dir
);
do_powersaver
(
cx
->
address
,
mults
_index
,
dir
);
}
else
{
do_powersaver
(
0
,
clock_ratio
_index
,
dir
);
do_powersaver
(
0
,
mults
_index
,
dir
);
}
break
;
}
...
...
@@ -341,8 +343,8 @@ static void longhaul_setstate(unsigned int table_index)
/* Enable bus master arbitration */
acpi_set_register
(
ACPI_BITREG_ARB_DISABLE
,
0
);
}
outb
(
pic2_mask
,
0xA1
);
/* restore mask */
outb
(
pic1_mask
,
0x21
);
outb
(
pic2_mask
,
0xA1
);
/* restore mask */
outb
(
pic1_mask
,
0x21
);
local_irq_restore
(
flags
);
preempt_enable
();
...
...
@@ -392,7 +394,8 @@ static void longhaul_setstate(unsigned int table_index)
cpufreq_notify_transition
(
&
freqs
,
CPUFREQ_POSTCHANGE
);
if
(
!
bm_timeout
)
printk
(
KERN_INFO
PFX
"Warning: Timeout while waiting for idle PCI bus.
\n
"
);
printk
(
KERN_INFO
PFX
"Warning: Timeout while waiting for "
"idle PCI bus.
\n
"
);
}
/*
...
...
@@ -458,31 +461,32 @@ static int __init longhaul_get_ranges(void)
break
;
}
dprintk
(
"MinMult:%d.%dx MaxMult:%d.%dx
\n
"
,
dprintk
(
"MinMult:%d.%dx MaxMult:%d.%dx
\n
"
,
minmult
/
10
,
minmult
%
10
,
maxmult
/
10
,
maxmult
%
10
);
highest_speed
=
calc_speed
(
maxmult
);
lowest_speed
=
calc_speed
(
minmult
);
dprintk
(
"FSB:%dMHz Lowest speed: %s Highest speed:%s
\n
"
,
fsb
,
dprintk
(
"FSB:%dMHz Lowest speed: %s Highest speed:%s
\n
"
,
fsb
,
print_speed
(
lowest_speed
/
1000
),
print_speed
(
highest_speed
/
1000
));
if
(
lowest_speed
==
highest_speed
)
{
printk
(
KERN_INFO
PFX
"highestspeed == lowest, aborting.
\n
"
);
printk
(
KERN_INFO
PFX
"highestspeed == lowest, aborting.
\n
"
);
return
-
EINVAL
;
}
if
(
lowest_speed
>
highest_speed
)
{
printk
(
KERN_INFO
PFX
"nonsense! lowest (%d > %d) !
\n
"
,
printk
(
KERN_INFO
PFX
"nonsense! lowest (%d > %d) !
\n
"
,
lowest_speed
,
highest_speed
);
return
-
EINVAL
;
}
longhaul_table
=
kmalloc
((
numscales
+
1
)
*
sizeof
(
struct
cpufreq_frequency_table
),
GFP_KERNEL
);
if
(
!
longhaul_table
)
longhaul_table
=
kmalloc
((
numscales
+
1
)
*
sizeof
(
*
longhaul_table
),
GFP_KERNEL
);
if
(
!
longhaul_table
)
return
-
ENOMEM
;
for
(
j
=
0
;
j
<
numscales
;
j
++
)
{
ratio
=
clock_ratio
[
j
];
ratio
=
mults
[
j
];
if
(
ratio
==
-
1
)
continue
;
if
(
ratio
>
maxmult
||
ratio
<
minmult
)
...
...
@@ -521,7 +525,7 @@ static int __init longhaul_get_ranges(void)
/* Find index we are running on */
for
(
j
=
0
;
j
<
k
;
j
++
)
{
if
(
clock_ratio
[
longhaul_table
[
j
].
index
&
0x1f
]
==
mult
)
{
if
(
mults
[
longhaul_table
[
j
].
index
&
0x1f
]
==
mult
)
{
longhaul_index
=
j
;
break
;
}
...
...
@@ -559,20 +563,22 @@ static void __init longhaul_setup_voltagescaling(void)
maxvid
=
vrm_mV_table
[
longhaul
.
bits
.
MaximumVID
];
if
(
minvid
.
mV
==
0
||
maxvid
.
mV
==
0
||
minvid
.
mV
>
maxvid
.
mV
)
{
printk
(
KERN_INFO
PFX
"Bogus values Min:%d.%03d Max:%d.%03d. "
printk
(
KERN_INFO
PFX
"Bogus values Min:%d.%03d Max:%d.%03d. "
"Voltage scaling disabled.
\n
"
,
minvid
.
mV
/
1000
,
minvid
.
mV
%
1000
,
maxvid
.
mV
/
1000
,
maxvid
.
mV
%
1000
);
minvid
.
mV
/
1000
,
minvid
.
mV
%
1000
,
maxvid
.
mV
/
1000
,
maxvid
.
mV
%
1000
);
return
;
}
if
(
minvid
.
mV
==
maxvid
.
mV
)
{
printk
(
KERN_INFO
PFX
"Claims to support voltage scaling but min & max are "
"both %d.%03d. Voltage scaling disabled
\n
"
,
printk
(
KERN_INFO
PFX
"Claims to support voltage scaling but "
"min & max are both %d.%03d. "
"Voltage scaling disabled
\n
"
,
maxvid
.
mV
/
1000
,
maxvid
.
mV
%
1000
);
return
;
}
/* How many voltage steps
*/
/* How many voltage steps*/
numvscales
=
maxvid
.
pos
-
minvid
.
pos
+
1
;
printk
(
KERN_INFO
PFX
"Max VID=%d.%03d "
...
...
@@ -586,7 +592,7 @@ static void __init longhaul_setup_voltagescaling(void)
j
=
longhaul
.
bits
.
MinMHzBR
;
if
(
longhaul
.
bits
.
MinMHzBR4
)
j
+=
16
;
min_vid_speed
=
eblcr
_table
[
j
];
min_vid_speed
=
eblcr
[
j
];
if
(
min_vid_speed
==
-
1
)
return
;
switch
(
longhaul
.
bits
.
MinMHzFSB
)
{
...
...
@@ -617,7 +623,8 @@ static void __init longhaul_setup_voltagescaling(void)
pos
=
minvid
.
pos
;
longhaul_table
[
j
].
index
|=
mV_vrm_table
[
pos
]
<<
8
;
vid
=
vrm_mV_table
[
mV_vrm_table
[
pos
]];
printk
(
KERN_INFO
PFX
"f: %d kHz, index: %d, vid: %d mV
\n
"
,
speed
,
j
,
vid
.
mV
);
printk
(
KERN_INFO
PFX
"f: %d kHz, index: %d, vid: %d mV
\n
"
,
speed
,
j
,
vid
.
mV
);
j
++
;
}
...
...
@@ -640,7 +647,8 @@ static int longhaul_target(struct cpufreq_policy *policy,
unsigned
int
dir
=
0
;
u8
vid
,
current_vid
;
if
(
cpufreq_frequency_table_target
(
policy
,
longhaul_table
,
target_freq
,
relation
,
&
table_index
))
if
(
cpufreq_frequency_table_target
(
policy
,
longhaul_table
,
target_freq
,
relation
,
&
table_index
))
return
-
EINVAL
;
/* Don't set same frequency again */
...
...
@@ -656,7 +664,8 @@ static int longhaul_target(struct cpufreq_policy *policy,
* this in hardware, C3 is old and we need to do this
* in software. */
i
=
longhaul_index
;
current_vid
=
(
longhaul_table
[
longhaul_index
].
index
>>
8
)
&
0x1f
;
current_vid
=
(
longhaul_table
[
longhaul_index
].
index
>>
8
);
current_vid
&=
0x1f
;
if
(
table_index
>
longhaul_index
)
dir
=
1
;
while
(
i
!=
table_index
)
{
...
...
@@ -691,9 +700,9 @@ static acpi_status longhaul_walk_callback(acpi_handle obj_handle,
{
struct
acpi_device
*
d
;
if
(
acpi_bus_get_device
(
obj_handle
,
&
d
)
)
{
if
(
acpi_bus_get_device
(
obj_handle
,
&
d
))
return
0
;
}
*
return_value
=
acpi_driver_data
(
d
);
return
1
;
}
...
...
@@ -750,7 +759,7 @@ static int longhaul_setup_southbridge(void)
/* Find VT8235 southbridge */
dev
=
pci_get_device
(
PCI_VENDOR_ID_VIA
,
PCI_DEVICE_ID_VIA_8235
,
NULL
);
if
(
dev
==
NULL
)
/* Find VT8237 southbridge */
/* Find VT8237 southbridge */
dev
=
pci_get_device
(
PCI_VENDOR_ID_VIA
,
PCI_DEVICE_ID_VIA_8237
,
NULL
);
if
(
dev
!=
NULL
)
{
...
...
@@ -769,7 +778,8 @@ static int longhaul_setup_southbridge(void)
if
(
pci_cmd
&
1
<<
7
)
{
pci_read_config_dword
(
dev
,
0x88
,
&
acpi_regs_addr
);
acpi_regs_addr
&=
0xff00
;
printk
(
KERN_INFO
PFX
"ACPI I/O at 0x%x
\n
"
,
acpi_regs_addr
);
printk
(
KERN_INFO
PFX
"ACPI I/O at 0x%x
\n
"
,
acpi_regs_addr
);
}
pci_dev_put
(
dev
);
...
...
@@ -781,7 +791,7 @@ static int longhaul_setup_southbridge(void)
static
int
__init
longhaul_cpu_init
(
struct
cpufreq_policy
*
policy
)
{
struct
cpuinfo_x86
*
c
=
&
cpu_data
(
0
);
char
*
cpuname
=
NULL
;
char
*
cpuname
=
NULL
;
int
ret
;
u32
lo
,
hi
;
...
...
@@ -791,8 +801,8 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
cpu_model
=
CPU_SAMUEL
;
cpuname
=
"C3 'Samuel' [C5A]"
;
longhaul_version
=
TYPE_LONGHAUL_V1
;
memcpy
(
clock_ratio
,
samuel1_clock_ratio
,
sizeof
(
samuel1_clock_ratio
));
memcpy
(
eblcr_table
,
samuel1_eblcr
,
sizeof
(
samuel1_eblcr
));
memcpy
(
mults
,
samuel1_mults
,
sizeof
(
samuel1_mults
));
memcpy
(
eblcr
,
samuel1_eblcr
,
sizeof
(
samuel1_eblcr
));
break
;
case
7
:
...
...
@@ -803,10 +813,8 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
cpuname
=
"C3 'Samuel 2' [C5B]"
;
/* Note, this is not a typo, early Samuel2's had
* Samuel1 ratios. */
memcpy
(
clock_ratio
,
samuel1_clock_ratio
,
sizeof
(
samuel1_clock_ratio
));
memcpy
(
eblcr_table
,
samuel2_eblcr
,
sizeof
(
samuel2_eblcr
));
memcpy
(
mults
,
samuel1_mults
,
sizeof
(
samuel1_mults
));
memcpy
(
eblcr
,
samuel2_eblcr
,
sizeof
(
samuel2_eblcr
));
break
;
case
1
...
15
:
longhaul_version
=
TYPE_LONGHAUL_V1
;
...
...
@@ -817,10 +825,8 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
cpu_model
=
CPU_EZRA
;
cpuname
=
"C3 'Ezra' [C5C]"
;
}
memcpy
(
clock_ratio
,
ezra_clock_ratio
,
sizeof
(
ezra_clock_ratio
));
memcpy
(
eblcr_table
,
ezra_eblcr
,
sizeof
(
ezra_eblcr
));
memcpy
(
mults
,
ezra_mults
,
sizeof
(
ezra_mults
));
memcpy
(
eblcr
,
ezra_eblcr
,
sizeof
(
ezra_eblcr
));
break
;
}
break
;
...
...
@@ -829,18 +835,16 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
cpu_model
=
CPU_EZRA_T
;
cpuname
=
"C3 'Ezra-T' [C5M]"
;
longhaul_version
=
TYPE_POWERSAVER
;
numscales
=
32
;
memcpy
(
clock_ratio
,
ezrat_clock_ratio
,
sizeof
(
ezrat_clock_ratio
));
memcpy
(
eblcr_table
,
ezrat_eblcr
,
sizeof
(
ezrat_eblcr
));
numscales
=
32
;
memcpy
(
mults
,
ezrat_mults
,
sizeof
(
ezrat_mults
));
memcpy
(
eblcr
,
ezrat_eblcr
,
sizeof
(
ezrat_eblcr
));
break
;
case
9
:
longhaul_version
=
TYPE_POWERSAVER
;
numscales
=
32
;
memcpy
(
clock_ratio
,
nehemiah_clock_ratio
,
sizeof
(
nehemiah_clock_ratio
));
memcpy
(
eblcr_table
,
nehemiah_eblcr
,
sizeof
(
nehemiah_eblcr
));
memcpy
(
mults
,
nehemiah_mults
,
sizeof
(
nehemiah_mults
));
memcpy
(
eblcr
,
nehemiah_eblcr
,
sizeof
(
nehemiah_eblcr
));
switch
(
c
->
x86_mask
)
{
case
0
...
1
:
cpu_model
=
CPU_NEHEMIAH
;
...
...
@@ -869,14 +873,14 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
longhaul_version
=
TYPE_LONGHAUL_V1
;
}
printk
(
KERN_INFO
PFX
"VIA %s CPU detected. "
,
cpuname
);
printk
(
KERN_INFO
PFX
"VIA %s CPU detected. "
,
cpuname
);
switch
(
longhaul_version
)
{
case
TYPE_LONGHAUL_V1
:
case
TYPE_LONGHAUL_V2
:
printk
(
"Longhaul v%d supported.
\n
"
,
longhaul_version
);
printk
(
KERN_CONT
"Longhaul v%d supported.
\n
"
,
longhaul_version
);
break
;
case
TYPE_POWERSAVER
:
printk
(
"Powersaver supported.
\n
"
);
printk
(
KERN_CONT
"Powersaver supported.
\n
"
);
break
;
};
...
...
@@ -940,7 +944,7 @@ static int __devexit longhaul_cpu_exit(struct cpufreq_policy *policy)
return
0
;
}
static
struct
freq_attr
*
longhaul_attr
[]
=
{
static
struct
freq_attr
*
longhaul_attr
[]
=
{
&
cpufreq_freq_attr_scaling_available_freqs
,
NULL
,
};
...
...
@@ -966,13 +970,15 @@ static int __init longhaul_init(void)
#ifdef CONFIG_SMP
if
(
num_online_cpus
()
>
1
)
{
printk
(
KERN_ERR
PFX
"More than 1 CPU detected, longhaul disabled.
\n
"
);
printk
(
KERN_ERR
PFX
"More than 1 CPU detected, "
"longhaul disabled.
\n
"
);
return
-
ENODEV
;
}
#endif
#ifdef CONFIG_X86_IO_APIC
if
(
cpu_has_apic
)
{
printk
(
KERN_ERR
PFX
"APIC detected. Longhaul is currently broken in this configuration.
\n
"
);
printk
(
KERN_ERR
PFX
"APIC detected. Longhaul is currently "
"broken in this configuration.
\n
"
);
return
-
ENODEV
;
}
#endif
...
...
@@ -993,8 +999,8 @@ static void __exit longhaul_exit(void)
{
int
i
;
for
(
i
=
0
;
i
<
numscales
;
i
++
)
{
if
(
clock_ratio
[
i
]
==
maxmult
)
{
for
(
i
=
0
;
i
<
numscales
;
i
++
)
{
if
(
mults
[
i
]
==
maxmult
)
{
longhaul_setstate
(
i
);
break
;
}
...
...
@@ -1007,11 +1013,11 @@ static void __exit longhaul_exit(void)
/* Even if BIOS is exporting ACPI C3 state, and it is used
* with success when CPU is idle, this state doesn't
* trigger frequency transition in some cases. */
module_param
(
disable_acpi_c3
,
int
,
0644
);
module_param
(
disable_acpi_c3
,
int
,
0644
);
MODULE_PARM_DESC
(
disable_acpi_c3
,
"Don't use ACPI C3 support"
);
/* Change CPU voltage with frequency. Very usefull to save
* power, but most VIA C3 processors aren't supporting it. */
module_param
(
scale_voltage
,
int
,
0644
);
module_param
(
scale_voltage
,
int
,
0644
);
MODULE_PARM_DESC
(
scale_voltage
,
"Scale voltage of processor"
);
/* Force revision key to 0 for processors which doesn't
* support voltage scaling, but are introducing itself as
...
...
@@ -1019,9 +1025,9 @@ MODULE_PARM_DESC(scale_voltage, "Scale voltage of processor");
module_param
(
revid_errata
,
int
,
0644
);
MODULE_PARM_DESC
(
revid_errata
,
"Ignore CPU Revision ID"
);
MODULE_AUTHOR
(
"Dave Jones <davej@redhat.com>"
);
MODULE_DESCRIPTION
(
"Longhaul driver for VIA Cyrix processors."
);
MODULE_LICENSE
(
"GPL"
);
MODULE_AUTHOR
(
"Dave Jones <davej@redhat.com>"
);
MODULE_DESCRIPTION
(
"Longhaul driver for VIA Cyrix processors."
);
MODULE_LICENSE
(
"GPL"
);
late_initcall
(
longhaul_init
);
module_exit
(
longhaul_exit
);
arch/x86/kernel/cpu/cpufreq/longhaul.h
浏览文件 @
ac617bd0
...
...
@@ -49,14 +49,14 @@ union msr_longhaul {
/*
* Clock ratio tables. Div/Mod by 10 to get ratio.
* The eblcr
on
es specify the ratio read from the CPU.
* The
clock_ratio on
es specify what to write to the CPU.
* The eblcr
valu
es specify the ratio read from the CPU.
* The
mults valu
es specify what to write to the CPU.
*/
/*
* VIA C3 Samuel 1 & Samuel 2 (stepping 0)
*/
static
const
int
__initdata
samuel1_
clock_ratio
[
16
]
=
{
static
const
int
__initdata
samuel1_
mults
[
16
]
=
{
-
1
,
/* 0000 -> RESERVED */
30
,
/* 0001 -> 3.0x */
40
,
/* 0010 -> 4.0x */
...
...
@@ -119,7 +119,7 @@ static const int __initdata samuel2_eblcr[16] = {
/*
* VIA C3 Ezra
*/
static
const
int
__initdata
ezra_
clock_ratio
[
16
]
=
{
static
const
int
__initdata
ezra_
mults
[
16
]
=
{
100
,
/* 0000 -> 10.0x */
30
,
/* 0001 -> 3.0x */
40
,
/* 0010 -> 4.0x */
...
...
@@ -160,7 +160,7 @@ static const int __initdata ezra_eblcr[16] = {
/*
* VIA C3 (Ezra-T) [C5M].
*/
static
const
int
__initdata
ezrat_
clock_ratio
[
32
]
=
{
static
const
int
__initdata
ezrat_
mults
[
32
]
=
{
100
,
/* 0000 -> 10.0x */
30
,
/* 0001 -> 3.0x */
40
,
/* 0010 -> 4.0x */
...
...
@@ -235,7 +235,7 @@ static const int __initdata ezrat_eblcr[32] = {
/*
* VIA C3 Nehemiah */
static
const
int
__initdata
nehemiah_
clock_ratio
[
32
]
=
{
static
const
int
__initdata
nehemiah_
mults
[
32
]
=
{
100
,
/* 0000 -> 10.0x */
-
1
,
/* 0001 -> 16.0x */
40
,
/* 0010 -> 4.0x */
...
...
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