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powerpc: Unify the 32 and 64 bit idle loops

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This unifies the 32-bit (ARCH=ppc and ARCH=powerpc) and 64-bit idle
loops.  It brings over the concept of having a ppc_md.power_save
function from 32-bit to ARCH=powerpc, which lets us get rid of
native_idle().  With this we will also be able to simplify the idle
handling for pSeries and cell.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras 2006-03-27 15:03:03 +11:00
commit a0652fc9a2
18 changed files with 74 additions and 535 deletions
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13
include/asm-powerpc/machdep.h
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@ -158,6 +158,12 @@ struct machdep_calls {
/* Idle loop for this platform, leave empty for default idle loop */
void (*idle_loop)(void);
/*
* Function for waiting for work with reduced power in idle loop;
* called with interrupts disabled.
*/
void (*power_save)(void);
/* Function to enable performance monitor counters for this
platform, called once per cpu. */
void (*enable_pmcs)(void);
@ -170,9 +176,6 @@ struct machdep_calls {
May be NULL. */
void (*init)(void);
void (*idle)(void);
void (*power_save)(void);
void (*heartbeat)(void);
unsigned long heartbeat_reset;
unsigned long heartbeat_count;
@ -242,8 +245,8 @@ struct machdep_calls {
#endif /* CONFIG_KEXEC */
};
extern void default_idle(void);
extern void native_idle(void);
extern void power4_idle(void);
extern void ppc6xx_idle(void);
extern struct machdep_calls ppc_md;
extern char cmd_line[COMMAND_LINE_SIZE];

4
include/asm-powerpc/reg.h
View file

@ -622,6 +622,10 @@ extern void ppc64_runlatch_off(void);
extern unsigned long scom970_read(unsigned int address);
extern void scom970_write(unsigned int address, unsigned long value);
#else
#define ppc64_runlatch_on()
#define ppc64_runlatch_off()
#endif /* CONFIG_PPC64 */
#define __get_SP() ({unsigned long sp; \

2
include/asm-ppc/machdep.h
View file

@ -44,7 +44,7 @@ struct machdep_calls {
void (*power_off)(void);
void (*halt)(void);
void (*idle)(void);
void (*idle_loop)(void);
void (*power_save)(void);
long (*time_init)(void); /* Optional, may be NULL */