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nexedi
linux
Commits
e9e4f3bb
Commit
e9e4f3bb
authored
Feb 10, 2004
by
Dave Jones
Committed by
Dave Jones
Feb 10, 2004
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[CPUFREQ] convert powernow-k8 to use frequency tables [5/5]
Move the table verification to an extra function.
parent
d2b89b91
Changes
1
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1 changed file
with
44 additions
and
38 deletions
+44
-38
arch/i386/kernel/cpu/cpufreq/powernow-k8.c
arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+44
-38
No files found.
arch/i386/kernel/cpu/cpufreq/powernow-k8.c
View file @
e9e4f3bb
...
...
@@ -72,9 +72,6 @@ so this is not actually a restriction.
static
u32
batps
;
/* limit on the number of p states when on battery */
/* - set by BIOS in the PSB/PST */
#define SEARCH_UP 1
#define SEARCH_DOWN 0
/* Return a frequency in MHz, given an input fid */
static
u32
find_freq_from_fid
(
u32
fid
)
{
...
...
@@ -494,14 +491,55 @@ check_supported_cpu(void)
return
1
;
}
static
int
check_pst_table
(
struct
pst_s
*
pst
,
u8
maxvid
)
{
unsigned
int
j
;
u8
lastfid
=
0xFF
;
for
(
j
=
0
;
j
<
numps
;
j
++
)
{
if
(
pst
[
j
].
vid
>
LEAST_VID
)
{
printk
(
KERN_ERR
PFX
"vid %d invalid : 0x%x
\n
"
,
j
,
pst
[
j
].
vid
);
return
-
EINVAL
;
}
if
(
pst
[
j
].
vid
<
rvo
)
{
/* vid + rvo >= 0 */
printk
(
KERN_ERR
PFX
"BIOS error - 0 vid exceeded with pstate %d
\n
"
,
j
);
return
-
ENODEV
;
}
if
(
pst
[
j
].
vid
<
maxvid
+
rvo
)
{
/* vid + rvo >= maxvid */
printk
(
KERN_ERR
PFX
"BIOS error - maxvid exceeded with pstate %d
\n
"
,
j
);
return
-
ENODEV
;
}
if
((
pst
[
j
].
fid
>
MAX_FID
)
||
(
pst
[
j
].
fid
&
1
)
||
(
pst
[
j
].
fid
<
HI_FID_TABLE_BOTTOM
)){
printk
(
KERN_ERR
PFX
"fid %d invalid : 0x%x
\n
"
,
j
,
pst
[
j
].
fid
);
return
-
EINVAL
;
}
if
(
pst
[
j
].
fid
<
lastfid
)
lastfid
=
pst
[
j
].
fid
;
}
if
(
lastfid
&
1
)
{
printk
(
KERN_ERR
PFX
"lastfid invalid
\n
"
);
return
-
EINVAL
;
}
if
(
lastfid
>
LO_FID_TABLE_TOP
)
{
printk
(
KERN_INFO
PFX
"first fid not from lo freq table
\n
"
);
}
return
0
;
}
/* Find and validate the PSB/PST table in BIOS. */
static
inline
int
find_psb_table
(
void
)
{
struct
psb_s
*
psb
;
struct
pst_s
*
pst
;
unsigned
i
,
j
;
u32
lastfid
;
unsigned
int
i
,
j
;
u32
mvs
;
u8
maxvid
;
...
...
@@ -597,40 +635,8 @@ find_psb_table(void)
}
pst
=
(
struct
pst_s
*
)
(
psb
+
1
);
lastfid
=
0xFFFFFFFF
;
for
(
j
=
0
;
j
<
numps
;
j
++
)
{
if
(
pst
[
j
].
vid
>
LEAST_VID
)
{
printk
(
KERN_ERR
PFX
"vid invalid : 0x%x
\n
"
,
pst
[
j
].
vid
);
return
-
EINVAL
;
}
if
(
pst
[
j
].
vid
<
rvo
)
{
/* vid + rvo >= 0 */
printk
(
KERN_ERR
PFX
"BIOS error - 0 vid exceeded with pstate %d
\n
"
,
j
);
return
-
ENODEV
;
}
if
(
pst
[
j
].
vid
<
maxvid
+
rvo
)
{
/* vid + rvo >= maxvid */
printk
(
KERN_ERR
PFX
"BIOS error - maxvid exceeded with pstate %d
\n
"
,
j
);
return
-
ENODEV
;
}
if
((
pst
[
j
].
fid
>
MAX_FID
)
||
(
pst
[
j
].
fid
&
1
)
||
(
pst
[
j
].
fid
<
HI_FID_TABLE_BOTTOM
)){
printk
(
KERN_ERR
PFX
"fid invalid : 0x%x
\n
"
,
pst
[
j
].
fid
);
return
-
EINVAL
;
}
if
(
pst
[
j
].
fid
<
lastfid
)
lastfid
=
pst
[
j
].
fid
;
}
if
(
lastfid
&
1
)
{
printk
(
KERN_ERR
PFX
"lastfid invalid
\n
"
);
if
(
check_pst_table
(
pst
,
maxvid
))
return
-
EINVAL
;
}
if
(
lastfid
>
LO_FID_TABLE_TOP
)
{
printk
(
KERN_INFO
PFX
"first fid not from lo freq table
\n
"
);
}
powernow_table
=
kmalloc
((
sizeof
(
struct
cpufreq_frequency_table
)
*
(
numps
+
1
)),
GFP_KERNEL
);
if
(
!
powernow_table
)
{
...
...
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