1 files changed, 31 insertions, 106 deletions

diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h
index 08dbe3e6831c..9f50766c4623 100644
--- a/arch/powerpc/include/asm/time.h
+++ b/arch/powerpc/include/asm/time.h
@@ -15,16 +15,19 @@
 
 #include <asm/processor.h>
 #include <asm/cpu_has_feature.h>
+#include <asm/vdso/timebase.h>
 
 /* time.c */
+extern u64 decrementer_max;
+
 extern unsigned long tb_ticks_per_jiffy;
 extern unsigned long tb_ticks_per_usec;
 extern unsigned long tb_ticks_per_sec;
 extern struct clock_event_device decrementer_clockevent;
+extern u64 decrementer_max;
 
 
 extern void generic_calibrate_decr(void);
-extern void hdec_interrupt(struct pt_regs *regs);
 
 /* Some sane defaults: 125 MHz timebase, 1GHz processor */
 extern unsigned long ppc_proc_freq;
@@ -39,98 +42,12 @@ struct div_result {
 	u64 result_low;
 };
 
-/* Accessor functions for the timebase (RTC on 601) registers. */
-/* If one day CONFIG_POWER is added just define __USE_RTC as 1 */
-#define __USE_RTC()	(IS_ENABLED(CONFIG_PPC_BOOK3S_601))
-
-#ifdef CONFIG_PPC64
-
-/* For compatibility, get_tbl() is defined as get_tb() on ppc64 */
-#define get_tbl		get_tb
-
-#else
-
-static inline unsigned long get_tbl(void)
-{
-#if defined(CONFIG_403GCX)
-	unsigned long tbl;
-	asm volatile("mfspr %0, 0x3dd" : "=r" (tbl));
-	return tbl;
-#else
-	return mftbl();
-#endif
-}
-
-static inline unsigned int get_tbu(void)
-{
-#ifdef CONFIG_403GCX
-	unsigned int tbu;
-	asm volatile("mfspr %0, 0x3dc" : "=r" (tbu));
-	return tbu;
-#else
-	return mftbu();
-#endif
-}
-#endif /* !CONFIG_PPC64 */
-
-static inline unsigned int get_rtcl(void)
-{
-	unsigned int rtcl;
-
-	asm volatile("mfrtcl %0" : "=r" (rtcl));
-	return rtcl;
-}
-
-static inline u64 get_rtc(void)
-{
-	unsigned int hi, lo, hi2;
-
-	do {
-		asm volatile("mfrtcu %0; mfrtcl %1; mfrtcu %2"
-			     : "=r" (hi), "=r" (lo), "=r" (hi2));
-	} while (hi2 != hi);
-	return (u64)hi * 1000000000 + lo;
-}
-
 static inline u64 get_vtb(void)
 {
-#ifdef CONFIG_PPC_BOOK3S_64
 	if (cpu_has_feature(CPU_FTR_ARCH_207S))
 		return mfspr(SPRN_VTB);
-#endif
-	return 0;
-}
-
-#ifdef CONFIG_PPC64
-static inline u64 get_tb(void)
-{
-	return mftb();
-}
-#else /* CONFIG_PPC64 */
-static inline u64 get_tb(void)
-{
-	unsigned int tbhi, tblo, tbhi2;
-
-	do {
-		tbhi = get_tbu();
-		tblo = get_tbl();
-		tbhi2 = get_tbu();
-	} while (tbhi != tbhi2);
 
-	return ((u64)tbhi << 32) | tblo;
-}
-#endif /* !CONFIG_PPC64 */
-
-static inline u64 get_tb_or_rtc(void)
-{
-	return __USE_RTC() ? get_rtc() : get_tb();
-}
-
-static inline void set_tb(unsigned int upper, unsigned int lower)
-{
-	mtspr(SPRN_TBWL, 0);
-	mtspr(SPRN_TBWU, upper);
-	mtspr(SPRN_TBWL, lower);
+	return 0;
 }
 
 /* Accessor functions for the decrementer register.
@@ -141,11 +58,10 @@ static inline void set_tb(unsigned int upper, unsigned int lower)
  */
 static inline u64 get_dec(void)
 {
-#if defined(CONFIG_40x)
-	return (mfspr(SPRN_PIT));
-#else
-	return (mfspr(SPRN_DEC));
-#endif
+	if (IS_ENABLED(CONFIG_40x))
+		return mfspr(SPRN_PIT);
+
+	return mfspr(SPRN_DEC);
 }
 
 /*
@@ -155,23 +71,17 @@ static inline u64 get_dec(void)
  */
 static inline void set_dec(u64 val)
 {
-#if defined(CONFIG_40x)
-	mtspr(SPRN_PIT, (u32) val);
-#else
-#ifndef CONFIG_BOOKE
-	--val;
-#endif
-	mtspr(SPRN_DEC, val);
-#endif /* not 40x */
+	if (IS_ENABLED(CONFIG_40x))
+		mtspr(SPRN_PIT, (u32)val);
+	else if (IS_ENABLED(CONFIG_BOOKE))
+		mtspr(SPRN_DEC, val);
+	else
+		mtspr(SPRN_DEC, val - 1);
 }
 
 static inline unsigned long tb_ticks_since(unsigned long tstamp)
 {
-	if (__USE_RTC()) {
-		int delta = get_rtcl() - (unsigned int) tstamp;
-		return delta < 0 ? delta + 1000000000 : delta;
-	}
-	return get_tbl() - tstamp;
+	return mftb() - tstamp;
 }
 
 #define mulhwu(x,y) \
@@ -192,8 +102,23 @@ extern void __init time_init(void);
 
 DECLARE_PER_CPU(u64, decrementers_next_tb);
 
+static inline u64 timer_get_next_tb(void)
+{
+	return __this_cpu_read(decrementers_next_tb);
+}
+
+#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
+void timer_rearm_host_dec(u64 now);
+#endif
+
 /* Convert timebase ticks to nanoseconds */
 unsigned long long tb_to_ns(unsigned long long tb_ticks);
 
+void timer_broadcast_interrupt(void);
+
+/* SPLPAR and VIRT_CPU_ACCOUNTING_NATIVE */
+void pseries_accumulate_stolen_time(void);
+u64 pseries_calculate_stolen_time(u64 stop_tb);
+
 #endif /* __KERNEL__ */
 #endif /* __POWERPC_TIME_H */