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Kirill Smelkov
linux
Commits
b13e3088
Commit
b13e3088
authored
Mar 11, 2003
by
David S. Miller
Committed by
David S. Miller
Mar 11, 2003
Browse files
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Plain Diff
[SPARC64]: Move sparc64_init_timers into time.c
parent
e4c29577
Changes
3
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Showing
3 changed files
with
107 additions
and
109 deletions
+107
-109
arch/sparc64/kernel/irq.c
arch/sparc64/kernel/irq.c
+0
-107
arch/sparc64/kernel/time.c
arch/sparc64/kernel/time.c
+107
-0
include/asm-sparc64/irq.h
include/asm-sparc64/irq.h
+0
-2
No files found.
arch/sparc64/kernel/irq.c
View file @
b13e3088
...
...
@@ -946,113 +946,6 @@ int probe_irq_off(unsigned long mask)
return
0
;
}
/* This is gets the master TICK_INT timer going. */
void
sparc64_init_timers
(
void
(
*
cfunc
)(
int
,
void
*
,
struct
pt_regs
*
),
unsigned
long
*
clock
)
{
unsigned
long
pstate
;
extern
unsigned
long
timer_tick_offset
;
int
node
,
err
;
#ifdef CONFIG_SMP
extern
void
smp_tick_init
(
void
);
#endif
if
(
!
SPARC64_USE_STICK
)
{
node
=
linux_cpus
[
0
].
prom_node
;
*
clock
=
prom_getint
(
node
,
"clock-frequency"
);
}
else
{
node
=
prom_root_node
;
*
clock
=
prom_getint
(
node
,
"stick-frequency"
);
}
timer_tick_offset
=
*
clock
/
HZ
;
#ifdef CONFIG_SMP
smp_tick_init
();
#endif
/* Register IRQ handler. */
err
=
request_irq
(
build_irq
(
0
,
0
,
0UL
,
0UL
),
cfunc
,
SA_STATIC_ALLOC
,
"timer"
,
NULL
);
if
(
err
)
{
prom_printf
(
"Serious problem, cannot register TICK_INT
\n
"
);
prom_halt
();
}
/* Guarentee that the following sequences execute
* uninterrupted.
*/
__asm__
__volatile__
(
"rdpr %%pstate, %0
\n\t
"
"wrpr %0, %1, %%pstate"
:
"=r"
(
pstate
)
:
"i"
(
PSTATE_IE
));
/* Set things up so user can access tick register for profiling
* purposes. Also workaround BB_ERRATA_1 by doing a dummy
* read back of %tick after writing it.
*/
__asm__
__volatile__
(
" sethi %%hi(0x80000000), %%g1
\n
"
" ba,pt %%xcc, 1f
\n
"
" sllx %%g1, 32, %%g1
\n
"
" .align 64
\n
"
"1: rd %%tick, %%g2
\n
"
" add %%g2, 6, %%g2
\n
"
" andn %%g2, %%g1, %%g2
\n
"
" wrpr %%g2, 0, %%tick
\n
"
" rdpr %%tick, %%g0"
:
/* no outputs */
:
/* no inputs */
:
"g1"
,
"g2"
);
/* Workaround for Spitfire Errata (#54 I think??), I discovered
* this via Sun BugID 4008234, mentioned in Solaris-2.5.1 patch
* number 103640.
*
* On Blackbird writes to %tick_cmpr can fail, the
* workaround seems to be to execute the wr instruction
* at the start of an I-cache line, and perform a dummy
* read back from %tick_cmpr right after writing to it. -DaveM
*/
if
(
!
SPARC64_USE_STICK
)
{
__asm__
__volatile__
(
" rd %%tick, %%g1
\n
"
" ba,pt %%xcc, 1f
\n
"
" add %%g1, %0, %%g1
\n
"
" .align 64
\n
"
"1: wr %%g1, 0x0, %%tick_cmpr
\n
"
" rd %%tick_cmpr, %%g0"
:
/* no outputs */
:
"r"
(
timer_tick_offset
)
:
"g1"
);
}
else
{
/* Let the user get at STICK too. */
__asm__
__volatile__
(
" sethi %%hi(0x80000000), %%g1
\n
"
" sllx %%g1, 32, %%g1
\n
"
" rd %%asr24, %%g2
\n
"
" andn %%g2, %%g1, %%g2
\n
"
" wr %%g2, 0, %%asr24"
:
/* no outputs */
:
/* no inputs */
:
"g1"
,
"g2"
);
__asm__
__volatile__
(
" rd %%asr24, %%g1
\n
"
" add %%g1, %0, %%g1
\n
"
" wr %%g1, 0x0, %%asr25"
:
/* no outputs */
:
"r"
(
timer_tick_offset
)
:
"g1"
);
}
/* Restore PSTATE_IE. */
__asm__
__volatile__
(
"wrpr %0, 0x0, %%pstate"
:
/* no outputs */
:
"r"
(
pstate
));
local_irq_enable
();
}
#ifdef CONFIG_SMP
static
int
retarget_one_irq
(
struct
irqaction
*
p
,
int
goal_cpu
)
{
...
...
arch/sparc64/kernel/time.c
View file @
b13e3088
...
...
@@ -620,6 +620,113 @@ void __init clock_probe(void)
local_irq_restore
(
flags
);
}
/* This is gets the master TICK_INT timer going. */
static
void
sparc64_init_timers
(
void
(
*
cfunc
)(
int
,
void
*
,
struct
pt_regs
*
),
unsigned
long
*
clock
)
{
unsigned
long
pstate
;
extern
unsigned
long
timer_tick_offset
;
int
node
,
err
;
#ifdef CONFIG_SMP
extern
void
smp_tick_init
(
void
);
#endif
if
(
!
SPARC64_USE_STICK
)
{
node
=
linux_cpus
[
0
].
prom_node
;
*
clock
=
prom_getint
(
node
,
"clock-frequency"
);
}
else
{
node
=
prom_root_node
;
*
clock
=
prom_getint
(
node
,
"stick-frequency"
);
}
timer_tick_offset
=
*
clock
/
HZ
;
#ifdef CONFIG_SMP
smp_tick_init
();
#endif
/* Register IRQ handler. */
err
=
request_irq
(
build_irq
(
0
,
0
,
0UL
,
0UL
),
cfunc
,
SA_STATIC_ALLOC
,
"timer"
,
NULL
);
if
(
err
)
{
prom_printf
(
"Serious problem, cannot register TICK_INT
\n
"
);
prom_halt
();
}
/* Guarentee that the following sequences execute
* uninterrupted.
*/
__asm__
__volatile__
(
"rdpr %%pstate, %0
\n\t
"
"wrpr %0, %1, %%pstate"
:
"=r"
(
pstate
)
:
"i"
(
PSTATE_IE
));
/* Set things up so user can access tick register for profiling
* purposes. Also workaround BB_ERRATA_1 by doing a dummy
* read back of %tick after writing it.
*/
__asm__
__volatile__
(
" sethi %%hi(0x80000000), %%g1
\n
"
" ba,pt %%xcc, 1f
\n
"
" sllx %%g1, 32, %%g1
\n
"
" .align 64
\n
"
"1: rd %%tick, %%g2
\n
"
" add %%g2, 6, %%g2
\n
"
" andn %%g2, %%g1, %%g2
\n
"
" wrpr %%g2, 0, %%tick
\n
"
" rdpr %%tick, %%g0"
:
/* no outputs */
:
/* no inputs */
:
"g1"
,
"g2"
);
/* Workaround for Spitfire Errata (#54 I think??), I discovered
* this via Sun BugID 4008234, mentioned in Solaris-2.5.1 patch
* number 103640.
*
* On Blackbird writes to %tick_cmpr can fail, the
* workaround seems to be to execute the wr instruction
* at the start of an I-cache line, and perform a dummy
* read back from %tick_cmpr right after writing to it. -DaveM
*/
if
(
!
SPARC64_USE_STICK
)
{
__asm__
__volatile__
(
" rd %%tick, %%g1
\n
"
" ba,pt %%xcc, 1f
\n
"
" add %%g1, %0, %%g1
\n
"
" .align 64
\n
"
"1: wr %%g1, 0x0, %%tick_cmpr
\n
"
" rd %%tick_cmpr, %%g0"
:
/* no outputs */
:
"r"
(
timer_tick_offset
)
:
"g1"
);
}
else
{
/* Let the user get at STICK too. */
__asm__
__volatile__
(
" sethi %%hi(0x80000000), %%g1
\n
"
" sllx %%g1, 32, %%g1
\n
"
" rd %%asr24, %%g2
\n
"
" andn %%g2, %%g1, %%g2
\n
"
" wr %%g2, 0, %%asr24"
:
/* no outputs */
:
/* no inputs */
:
"g1"
,
"g2"
);
__asm__
__volatile__
(
" rd %%asr24, %%g1
\n
"
" add %%g1, %0, %%g1
\n
"
" wr %%g1, 0x0, %%asr25"
:
/* no outputs */
:
"r"
(
timer_tick_offset
)
:
"g1"
);
}
/* Restore PSTATE_IE. */
__asm__
__volatile__
(
"wrpr %0, 0x0, %%pstate"
:
/* no outputs */
:
"r"
(
pstate
));
local_irq_enable
();
}
void
__init
time_init
(
void
)
{
/* clock_probe() is now done at end of [se]bus_init on sparc64
...
...
include/asm-sparc64/irq.h
View file @
b13e3088
...
...
@@ -117,8 +117,6 @@ static __inline__ char *__irq_itoa(unsigned int irq)
extern
void
disable_irq
(
unsigned
int
);
#define disable_irq_nosync disable_irq
extern
void
enable_irq
(
unsigned
int
);
extern
void
sparc64_init_timers
(
void
(
*
lvl10_irq
)(
int
,
void
*
,
struct
pt_regs
*
),
unsigned
long
*
);
extern
unsigned
int
build_irq
(
int
pil
,
int
inofixup
,
unsigned
long
iclr
,
unsigned
long
imap
);
extern
unsigned
int
sbus_build_irq
(
void
*
sbus
,
unsigned
int
ino
);
extern
unsigned
int
psycho_build_irq
(
void
*
psycho
,
int
imap_off
,
int
ino
,
int
need_dma_sync
);
...
...
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