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d13780d4
L
linux
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d13780d4
编写于
7月 07, 2010
作者:
L
Len Brown
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
intel_idle: add initial Sandy Bridge support
Signed-off-by:
N
Len Brown
<
len.brown@intel.com
>
上级
815c4163
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
43 addition
and
1 deletion
+43
-1
drivers/idle/intel_idle.c
drivers/idle/intel_idle.c
+43
-1
未找到文件。
drivers/idle/intel_idle.c
浏览文件 @
d13780d4
...
...
@@ -83,7 +83,7 @@ static unsigned int substates;
static
int
(
*
choose_substate
)(
int
);
/* Reliable LAPIC Timer States, bit 1 for C1 etc. */
static
unsigned
int
lapic_timer_reliable_states
;
static
unsigned
int
lapic_timer_reliable_states
=
(
1
<<
1
);
/* Default to only C1 */
static
struct
cpuidle_device
*
intel_idle_cpuidle_devices
;
static
int
intel_idle
(
struct
cpuidle_device
*
dev
,
struct
cpuidle_state
*
state
);
...
...
@@ -126,6 +126,42 @@ static struct cpuidle_state nehalem_cstates[MWAIT_MAX_NUM_CSTATES] = {
.
enter
=
&
intel_idle
},
};
static
struct
cpuidle_state
snb_cstates
[
MWAIT_MAX_NUM_CSTATES
]
=
{
{
/* MWAIT C0 */
},
{
/* MWAIT C1 */
.
name
=
"SNB-C1"
,
.
desc
=
"MWAIT 0x00"
,
.
driver_data
=
(
void
*
)
0x00
,
.
flags
=
CPUIDLE_FLAG_TIME_VALID
,
.
exit_latency
=
1
,
.
target_residency
=
4
,
.
enter
=
&
intel_idle
},
{
/* MWAIT C2 */
.
name
=
"SNB-C3"
,
.
desc
=
"MWAIT 0x10"
,
.
driver_data
=
(
void
*
)
0x10
,
.
flags
=
CPUIDLE_FLAG_TIME_VALID
,
.
exit_latency
=
80
,
.
target_residency
=
160
,
.
enter
=
&
intel_idle
},
{
/* MWAIT C3 */
.
name
=
"SNB-C6"
,
.
desc
=
"MWAIT 0x20"
,
.
driver_data
=
(
void
*
)
0x20
,
.
flags
=
CPUIDLE_FLAG_TIME_VALID
,
.
exit_latency
=
104
,
.
target_residency
=
208
,
.
enter
=
&
intel_idle
},
{
/* MWAIT C4 */
.
name
=
"SNB-C7"
,
.
desc
=
"MWAIT 0x30"
,
.
driver_data
=
(
void
*
)
0x30
,
.
flags
=
CPUIDLE_FLAG_TIME_VALID
,
.
exit_latency
=
109
,
.
target_residency
=
300
,
.
enter
=
&
intel_idle
},
};
static
struct
cpuidle_state
atom_cstates
[
MWAIT_MAX_NUM_CSTATES
]
=
{
{
/* MWAIT C0 */
},
{
/* MWAIT C1 */
...
...
@@ -312,6 +348,12 @@ static int intel_idle_probe(void)
cpuidle_state_table
=
atom_cstates
;
choose_substate
=
choose_zero_substate
;
break
;
case
0x2A
:
/* SNB */
case
0x2D
:
/* SNB Xeon */
cpuidle_state_table
=
snb_cstates
;
choose_substate
=
choose_zero_substate
;
break
;
#ifdef FUTURE_USE
case
0x17
:
/* 23 - Core 2 Duo */
lapic_timer_reliable_states
=
(
1
<<
2
)
|
(
1
<<
1
);
/* C2, C1 */
...
...
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