/* * Common time prototypes and such for all ppc machines. * * Written by Cort Dougan (cort@cs.nmt.edu) to merge * Paul Mackerras' version and mine for PReP and Pmac. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef __POWERPC_TIME_H #define __POWERPC_TIME_H #ifdef __KERNEL__ #include <linux/types.h> #include <linux/percpu.h> #include <asm/processor.h> #include <asm/cpu_has_feature.h> /* time.c */ 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; struct rtc_time; extern void to_tm(int tim, struct rtc_time * tm); extern void tick_broadcast_ipi_handler(void); extern void generic_calibrate_decr(void); /* Some sane defaults: 125 MHz timebase, 1GHz processor */ extern unsigned long ppc_proc_freq; #define DEFAULT_PROC_FREQ (DEFAULT_TB_FREQ * 8) extern unsigned long ppc_tb_freq; #define DEFAULT_TB_FREQ 125000000UL struct div_result { u64 result_high; 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 */ #ifdef CONFIG_6xx #define __USE_RTC() (cpu_has_feature(CPU_FTR_USE_RTC)) #else #define __USE_RTC() 0 #endif #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); } /* Accessor functions for the decrementer register. * The 4xx doesn't even have a decrementer. I tried to use the * generic timer interrupt code, which seems OK, with the 4xx PIT * in auto-reload mode. The problem is PIT stops counting when it * hits zero. If it would wrap, we could use it just like a decrementer. */ static inline u64 get_dec(void) { #if defined(CONFIG_40x) return (mfspr(SPRN_PIT)); #else return (mfspr(SPRN_DEC)); #endif } /* * Note: Book E and 4xx processors differ from other PowerPC processors * in when the decrementer generates its interrupt: on the 1 to 0 * transition for Book E/4xx, but on the 0 to -1 transition for others. */ 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 */ } 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; } #define mulhwu(x,y) \ ({unsigned z; asm ("mulhwu %0,%1,%2" : "=r" (z) : "r" (x), "r" (y)); z;}) #ifdef CONFIG_PPC64 #define mulhdu(x,y) \ ({unsigned long z; asm ("mulhdu %0,%1,%2" : "=r" (z) : "r" (x), "r" (y)); z;}) #else extern u64 mulhdu(u64, u64); #endif extern void div128_by_32(u64 dividend_high, u64 dividend_low, unsigned divisor, struct div_result *dr); /* Used to store Processor Utilization register (purr) values */ struct cpu_usage { u64 current_tb; /* Holds the current purr register values */ }; DECLARE_PER_CPU(struct cpu_usage, cpu_usage_array); extern void secondary_cpu_time_init(void); DECLARE_PER_CPU(u64, decrementers_next_tb); /* Convert timebase ticks to nanoseconds */ unsigned long long tb_to_ns(unsigned long long tb_ticks); #endif /* __KERNEL__ */ #endif /* __POWERPC_TIME_H */
Name | Type | Size | Permission | Actions |
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book3s | Folder | 0755 |
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nohash | Folder | 0755 |
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8xx_immap.h | File | 13.77 KB | 0644 |
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Kbuild | File | 248 B | 0644 |
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accounting.h | File | 1 KB | 0644 |
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agp.h | File | 525 B | 0644 |
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archrandom.h | File | 1016 B | 0644 |
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asm-compat.h | File | 2.53 KB | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-prototypes.h | File | 4.78 KB | 0644 |
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async_tx.h | File | 1.64 KB | 0644 |
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atomic.h | File | 13.57 KB | 0644 |
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backlight.h | File | 1.09 KB | 0644 |
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barrier.h | File | 3.57 KB | 0644 |
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bitops.h | File | 7.8 KB | 0644 |
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bootx.h | File | 1.12 KB | 0644 |
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btext.h | File | 926 B | 0644 |
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bug.h | File | 3.55 KB | 0644 |
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bugs.h | File | 486 B | 0644 |
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cache.h | File | 2.47 KB | 0644 |
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cacheflush.h | File | 3.76 KB | 0644 |
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cell-pmu.h | File | 4.04 KB | 0644 |
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cell-regs.h | File | 9.57 KB | 0644 |
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checksum.h | File | 5.85 KB | 0644 |
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cmpxchg.h | File | 12.16 KB | 0644 |
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code-patching-asm.h | File | 397 B | 0644 |
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code-patching.h | File | 5.01 KB | 0644 |
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compat.h | File | 6.26 KB | 0644 |
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context_tracking.h | File | 245 B | 0644 |
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copro.h | File | 769 B | 0644 |
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cpm.h | File | 5.09 KB | 0644 |
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cpm1.h | File | 21.08 KB | 0644 |
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cpm2.h | File | 48.43 KB | 0644 |
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cpu_has_feature.h | File | 1.31 KB | 0644 |
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cpufeature.h | File | 1.18 KB | 0644 |
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cpuidle.h | File | 3.31 KB | 0644 |
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cputable.h | File | 22.56 KB | 0644 |
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cputhreads.h | File | 2.92 KB | 0644 |
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cputime.h | File | 1.59 KB | 0644 |
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current.h | File | 835 B | 0644 |
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dbdma.h | File | 3.72 KB | 0644 |
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dbell.h | File | 2.78 KB | 0644 |
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dcr-generic.h | File | 1.58 KB | 0644 |
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dcr-mmio.h | File | 1.68 KB | 0644 |
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dcr-native.h | File | 4.42 KB | 0644 |
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dcr-regs.h | File | 5.71 KB | 0644 |
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dcr.h | File | 2.73 KB | 0644 |
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debug.h | File | 1.97 KB | 0644 |
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debugfs.h | File | 489 B | 0644 |
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delay.h | File | 3.42 KB | 0644 |
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device.h | File | 1.1 KB | 0644 |
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disassemble.h | File | 2.73 KB | 0644 |
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dma-mapping.h | File | 4.12 KB | 0644 |
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dma.h | File | 10.51 KB | 0644 |
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dt_cpu_ftrs.h | File | 816 B | 0644 |
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edac.h | File | 1.08 KB | 0644 |
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eeh.h | File | 14.44 KB | 0644 |
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eeh_event.h | File | 1.36 KB | 0644 |
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ehv_pic.h | File | 963 B | 0644 |
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elf.h | File | 6.29 KB | 0644 |
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emergency-restart.h | File | 43 B | 0644 |
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emulated_ops.h | File | 2.58 KB | 0644 |
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epapr_hcalls.h | File | 16.44 KB | 0644 |
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exception-64e.h | File | 7.21 KB | 0644 |
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exception-64s.h | File | 22.72 KB | 0644 |
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exec.h | File | 246 B | 0644 |
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extable.h | File | 904 B | 0644 |
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fadump.h | File | 6.1 KB | 0644 |
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fb.h | File | 483 B | 0644 |
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feature-fixups.h | File | 8.76 KB | 0644 |
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firmware.h | File | 4.71 KB | 0644 |
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fixmap.h | File | 2.33 KB | 0644 |
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floppy.h | File | 4.86 KB | 0644 |
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fs_pd.h | File | 1.02 KB | 0644 |
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fsl_85xx_cache_sram.h | File | 1.43 KB | 0644 |
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fsl_gtm.h | File | 1.38 KB | 0644 |
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fsl_hcalls.h | File | 17.2 KB | 0644 |
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fsl_lbc.h | File | 10.9 KB | 0644 |
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fsl_pamu_stash.h | File | 1.1 KB | 0644 |
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fsl_pm.h | File | 1.36 KB | 0644 |
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ftrace.h | File | 2.1 KB | 0644 |
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futex.h | File | 2.4 KB | 0644 |
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grackle.h | File | 331 B | 0644 |
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hardirq.h | File | 1.15 KB | 0644 |
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head-64.h | File | 13.86 KB | 0644 |
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heathrow.h | File | 2.53 KB | 0644 |
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highmem.h | File | 2.41 KB | 0644 |
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hmi.h | File | 1.49 KB | 0644 |
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hugetlb.h | File | 4.73 KB | 0644 |
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hvcall.h | File | 15.35 KB | 0644 |
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hvconsole.h | File | 1.37 KB | 0644 |
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hvcserver.h | File | 2.09 KB | 0644 |
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hvsi.h | File | 2.78 KB | 0644 |
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hw_breakpoint.h | File | 3.07 KB | 0644 |
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hw_irq.h | File | 5.24 KB | 0644 |
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hydra.h | File | 2.91 KB | 0644 |
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i8259.h | File | 361 B | 0644 |
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ibmebus.h | File | 2.15 KB | 0644 |
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icswx.h | File | 4.71 KB | 0644 |
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ide.h | File | 586 B | 0644 |
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ima.h | File | 772 B | 0644 |
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imc-pmu.h | File | 2.87 KB | 0644 |
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immap_cpm2.h | File | 10.5 KB | 0644 |
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io-defs.h | File | 3.09 KB | 0644 |
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io-workarounds.h | File | 1.54 KB | 0644 |
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io.h | File | 28.02 KB | 0644 |
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io_event_irq.h | File | 1.91 KB | 0644 |
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iommu.h | File | 10.16 KB | 0644 |
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ipic.h | File | 3.51 KB | 0644 |
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irq.h | File | 1.83 KB | 0644 |
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irq_work.h | File | 252 B | 0644 |
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irqflags.h | File | 1.7 KB | 0644 |
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isa-bridge.h | File | 654 B | 0644 |
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jump_label.h | File | 1.62 KB | 0644 |
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kdebug.h | File | 291 B | 0644 |
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kdump.h | File | 1.37 KB | 0644 |
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kexec.h | File | 4.02 KB | 0644 |
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keylargo.h | File | 10.8 KB | 0644 |
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kgdb.h | File | 2.06 KB | 0644 |
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kmap_types.h | File | 434 B | 0644 |
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kprobes.h | File | 3.75 KB | 0644 |
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kup.h | File | 1021 B | 0644 |
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kvm_asm.h | File | 5.46 KB | 0644 |
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kvm_book3s.h | File | 12.06 KB | 0644 |
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kvm_book3s_32.h | File | 1.39 KB | 0644 |
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kvm_book3s_64.h | File | 12.62 KB | 0644 |
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kvm_book3s_asm.h | File | 4.4 KB | 0644 |
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kvm_booke.h | File | 2.68 KB | 0644 |
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kvm_booke_hv_asm.h | File | 2.03 KB | 0644 |
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kvm_fpu.h | File | 2.74 KB | 0644 |
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kvm_host.h | File | 19.92 KB | 0644 |
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kvm_para.h | File | 1.49 KB | 0644 |
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kvm_ppc.h | File | 34.83 KB | 0644 |
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libata-portmap.h | File | 249 B | 0644 |
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linkage.h | File | 501 B | 0644 |
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livepatch.h | File | 1.65 KB | 0644 |
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local.h | File | 3.79 KB | 0644 |
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lppaca.h | File | 5.02 KB | 0644 |
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lv1call.h | File | 18.74 KB | 0644 |
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machdep.h | File | 9.7 KB | 0644 |
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macio.h | File | 3.89 KB | 0644 |
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mc146818rtc.h | File | 943 B | 0644 |
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mce.h | File | 5.58 KB | 0644 |
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mediabay.h | File | 1.34 KB | 0644 |
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mm-arch-hooks.h | File | 839 B | 0644 |
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mman.h | File | 1.33 KB | 0644 |
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mmu-40x.h | File | 1.94 KB | 0644 |
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mmu-44x.h | File | 5.56 KB | 0644 |
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mmu-8xx.h | File | 8.6 KB | 0644 |
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mmu-book3e.h | File | 9.47 KB | 0644 |
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mmu.h | File | 9.2 KB | 0644 |
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mmu_context.h | File | 6.26 KB | 0644 |
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mmzone.h | File | 1.08 KB | 0644 |
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module.h | File | 2.47 KB | 0644 |
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mpc5121.h | File | 3.82 KB | 0644 |
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mpc52xx.h | File | 10.85 KB | 0644 |
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mpc52xx_psc.h | File | 9.89 KB | 0644 |
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mpc5xxx.h | File | 641 B | 0644 |
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mpc6xx.h | File | 143 B | 0644 |
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mpc8260.h | File | 742 B | 0644 |
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mpc85xx.h | File | 2.52 KB | 0644 |
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mpic.h | File | 13.97 KB | 0644 |
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mpic_msgr.h | File | 3.52 KB | 0644 |
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mpic_timer.h | File | 1.39 KB | 0644 |
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msi_bitmap.h | File | 1.01 KB | 0644 |
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nmi.h | File | 238 B | 0644 |
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nvram.h | File | 3.21 KB | 0644 |
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ohare.h | File | 1.64 KB | 0644 |
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opal-api.h | File | 29.34 KB | 0644 |
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opal.h | File | 16.53 KB | 0644 |
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oprofile_impl.h | File | 3 KB | 0644 |
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paca.h | File | 8.06 KB | 0644 |
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page.h | File | 10.65 KB | 0644 |
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page_32.h | File | 1.57 KB | 0644 |
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page_64.h | File | 2.93 KB | 0644 |
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parport.h | File | 956 B | 0644 |
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pasemi_dma.h | File | 23.32 KB | 0644 |
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pci-bridge.h | File | 9.21 KB | 0644 |
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pci.h | File | 4.58 KB | 0644 |
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percpu.h | File | 468 B | 0644 |
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perf_event.h | File | 1.23 KB | 0644 |
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perf_event_fsl_emb.h | File | 1.42 KB | 0644 |
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perf_event_server.h | File | 6.3 KB | 0644 |
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pgalloc.h | File | 620 B | 0644 |
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pgtable-be-types.h | File | 2.76 KB | 0644 |
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pgtable-types.h | File | 1.94 KB | 0644 |
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pgtable.h | File | 2.45 KB | 0644 |
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plpar_wrappers.h | File | 8.35 KB | 0644 |
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pmac_feature.h | File | 13.08 KB | 0644 |
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pmac_low_i2c.h | File | 3.24 KB | 0644 |
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pmac_pfunc.h | File | 8.01 KB | 0644 |
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pmc.h | File | 1.35 KB | 0644 |
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pmi.h | File | 1.77 KB | 0644 |
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pnv-ocxl.h | File | 1.4 KB | 0644 |
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pnv-pci.h | File | 3.22 KB | 0644 |
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powernv.h | File | 1.57 KB | 0644 |
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ppc-opcode.h | File | 19.05 KB | 0644 |
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ppc-pci.h | File | 2.69 KB | 0644 |
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ppc4xx.h | File | 530 B | 0644 |
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ppc4xx_ocm.h | File | 1.41 KB | 0644 |
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ppc_asm.h | File | 21.63 KB | 0644 |
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probes.h | File | 2.11 KB | 0644 |
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processor.h | File | 15 KB | 0644 |
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prom.h | File | 7.17 KB | 0644 |
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ps3.h | File | 15.44 KB | 0644 |
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ps3av.h | File | 23.49 KB | 0644 |
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ps3gpu.h | File | 2.44 KB | 0644 |
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ps3stor.h | File | 1.99 KB | 0644 |
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pte-common.h | File | 6.27 KB | 0644 |
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pte-walk.h | File | 1.11 KB | 0644 |
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ptrace.h | File | 7.14 KB | 0644 |
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reg.h | File | 61.61 KB | 0644 |
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reg_8xx.h | File | 4.96 KB | 0644 |
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reg_a2.h | File | 6.16 KB | 0644 |
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reg_booke.h | File | 36.17 KB | 0644 |
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reg_fsl_emb.h | File | 3.65 KB | 0644 |
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rheap.h | File | 2.43 KB | 0644 |
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rio.h | File | 637 B | 0644 |
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rtas.h | File | 14.67 KB | 0644 |
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runlatch.h | File | 1.16 KB | 0644 |
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scom.h | File | 4.92 KB | 0644 |
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seccomp.h | File | 249 B | 0644 |
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sections.h | File | 1.9 KB | 0644 |
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security_features.h | File | 3.03 KB | 0644 |
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serial.h | File | 677 B | 0644 |
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setjmp.h | File | 630 B | 0644 |
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setup.h | File | 2.44 KB | 0644 |
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sfp-machine.h | File | 12.38 KB | 0644 |
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shmparam.h | File | 206 B | 0644 |
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signal.h | File | 225 B | 0644 |
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slice.h | File | 1.12 KB | 0644 |
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smp.h | File | 6.13 KB | 0644 |
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smu.h | File | 19.33 KB | 0644 |
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sparsemem.h | File | 1.1 KB | 0644 |
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spinlock.h | File | 7.04 KB | 0644 |
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spinlock_types.h | File | 424 B | 0644 |
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spu.h | File | 25.28 KB | 0644 |
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spu_csa.h | File | 6.64 KB | 0644 |
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spu_info.h | File | 908 B | 0644 |
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spu_priv1.h | File | 5.68 KB | 0644 |
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sstep.h | File | 4.58 KB | 0644 |
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string.h | File | 1.74 KB | 0644 |
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swab.h | File | 377 B | 0644 |
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swiotlb.h | File | 810 B | 0644 |
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switch_to.h | File | 2.66 KB | 0644 |
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synch.h | File | 1.36 KB | 0644 |
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syscall.h | File | 2.8 KB | 0644 |
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syscalls.h | File | 684 B | 0644 |
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systbl.h | File | 9.28 KB | 0644 |
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tce.h | File | 1.72 KB | 0644 |
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termios.h | File | 860 B | 0644 |
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thread_info.h | File | 5.31 KB | 0644 |
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time.h | File | 4.82 KB | 0644 |
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timex.h | File | 967 B | 0644 |
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tlb.h | File | 2.47 KB | 0644 |
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tlbflush.h | File | 2.93 KB | 0644 |
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tm.h | File | 690 B | 0644 |
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topology.h | File | 2.92 KB | 0644 |
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trace.h | File | 4.17 KB | 0644 |
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trace_clock.h | File | 517 B | 0644 |
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tsi108.h | File | 3.39 KB | 0644 |
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tsi108_irq.h | File | 4.48 KB | 0644 |
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tsi108_pci.h | File | 1.82 KB | 0644 |
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types.h | File | 1 KB | 0644 |
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uaccess.h | File | 13.21 KB | 0644 |
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udbg.h | File | 2.16 KB | 0644 |
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uic.h | File | 616 B | 0644 |
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unaligned.h | File | 548 B | 0644 |
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uninorth.h | File | 8.21 KB | 0644 |
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unistd.h | File | 1.52 KB | 0644 |
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uprobes.h | File | 1.41 KB | 0644 |
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user.h | File | 2.14 KB | 0644 |
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vas.h | File | 4.61 KB | 0644 |
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vdso.h | File | 1.53 KB | 0644 |
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vdso_datapage.h | File | 4.4 KB | 0644 |
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vga.h | File | 1.24 KB | 0644 |
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vio.h | File | 4.79 KB | 0644 |
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word-at-a-time.h | File | 4.75 KB | 0644 |
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xics.h | File | 4.31 KB | 0644 |
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xilinx_intc.h | File | 598 B | 0644 |
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xilinx_pci.h | File | 551 B | 0644 |
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xive-regs.h | File | 3.73 KB | 0644 |
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xive.h | File | 5.35 KB | 0644 |
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xmon.h | File | 927 B | 0644 |
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xor.h | File | 2.11 KB | 0644 |
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