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kernel: Add missing PPC CPU functions for idle / pause

This commit is contained in:
Alexander von Gluck IV 2014-01-19 14:38:01 -06:00
parent 524bea3553
commit fb8026e82b
1 changed files with 32 additions and 8 deletions
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40
headers/private/kernel/arch/ppc/arch_cpu.h
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@ -109,6 +109,22 @@ typedef struct arch_cpu_info {
} arch_cpu_info;
#define eieio() asm volatile("eieio")
#define isync() asm volatile("isync")
#define tlbsync() asm volatile("tlbsync")
#define ppc_sync() asm volatile("sync")
#define tlbia() asm volatile("tlbia")
#define tlbie(addr) asm volatile("tlbie %0" :: "r" (addr))
// adjust thread priority on PowerPC (Shared resource hints)
#define SRH_very_low() asm volatile("or 31,31,31")
#define SRH_low() asm volatile("or 1,1,1")
#define SRH_medium_low() asm volatile("or 6,6,6")
#define SRH_medium() asm volatile("or 2,2,2")
#define SRH_medium_high() asm volatile("or 5,5,5")
#define SRH_high() asm volatile("or 3,3,3")
#ifdef __cplusplus
extern "C" {
#endif
@ -157,18 +173,26 @@ extern void ppc_context_switch(void **_oldStackPointer, void *newStackPointer);
extern bool ppc_set_fault_handler(addr_t *handlerLocation, addr_t handler)
__attribute__((noinline));
static inline void
arch_cpu_pause(void)
{
// TODO: PowerPC review logic of setting very low for pause
SRH_very_low();
}
static inline void
arch_cpu_idle(void)
{
// TODO: PowerPC CPU idle call
}
#ifdef __cplusplus
}
#endif
#define eieio() asm volatile("eieio")
#define isync() asm volatile("isync")
#define tlbsync() asm volatile("tlbsync")
#define ppc_sync() asm volatile("sync")
#define tlbia() asm volatile("tlbia")
#define tlbie(addr) asm volatile("tlbie %0" :: "r" (addr))
// PowerPC processor version (the upper 16 bits of the PVR).
enum ppc_processor_version {
MPC601 = 0x0001,