diff options
Diffstat (limited to 'include/clocksource/hyperv_timer.h')
| -rw-r--r-- | include/clocksource/hyperv_timer.h | 47 |
1 files changed, 29 insertions, 18 deletions
diff --git a/include/clocksource/hyperv_timer.h b/include/clocksource/hyperv_timer.h index 34eef083c988..d48dd4176fd3 100644 --- a/include/clocksource/hyperv_timer.h +++ b/include/clocksource/hyperv_timer.h @@ -15,28 +15,34 @@ #include <linux/clocksource.h> #include <linux/math64.h> -#include <asm/mshyperv.h> +#include <hyperv/hvhdk.h> #define HV_MAX_MAX_DELTA_TICKS 0xffffffff #define HV_MIN_DELTA_TICKS 1 +#ifdef CONFIG_HYPERV_TIMER + +#include <asm/hyperv_timer.h> + /* Routines called by the VMbus driver */ -extern int hv_stimer_alloc(void); -extern void hv_stimer_free(void); +extern int hv_stimer_alloc(bool have_percpu_irqs); extern int hv_stimer_cleanup(unsigned int cpu); extern void hv_stimer_legacy_init(unsigned int cpu, int sint); extern void hv_stimer_legacy_cleanup(unsigned int cpu); extern void hv_stimer_global_cleanup(void); extern void hv_stimer0_isr(void); -#ifdef CONFIG_HYPERV_TIMER -extern u64 (*hv_read_reference_counter)(void); extern void hv_init_clocksource(void); +extern void hv_remap_tsc_clocksource(void); +extern unsigned long hv_get_tsc_pfn(void); extern struct ms_hyperv_tsc_page *hv_get_tsc_page(void); -static inline notrace u64 -hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg, u64 *cur_tsc) +extern void hv_adj_sched_clock_offset(u64 offset); + +static __always_inline bool +hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg, + u64 *cur_tsc, u64 *time) { u64 scale, offset; u32 sequence; @@ -60,7 +66,7 @@ hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg, u64 *cur_tsc) do { sequence = READ_ONCE(tsc_pg->tsc_sequence); if (!sequence) - return U64_MAX; + return false; /* * Make sure we read sequence before we read other values from * TSC page. @@ -79,28 +85,33 @@ hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg, u64 *cur_tsc) } while (READ_ONCE(tsc_pg->tsc_sequence) != sequence); - return mul_u64_u64_shr(*cur_tsc, scale, 64) + offset; + *time = mul_u64_u64_shr(*cur_tsc, scale, 64) + offset; + return true; } -static inline notrace u64 -hv_read_tsc_page(const struct ms_hyperv_tsc_page *tsc_pg) +#else /* CONFIG_HYPERV_TIMER */ +static inline unsigned long hv_get_tsc_pfn(void) { - u64 cur_tsc; - - return hv_read_tsc_page_tsc(tsc_pg, &cur_tsc); + return 0; } -#else /* CONFIG_HYPERV_TIMER */ static inline struct ms_hyperv_tsc_page *hv_get_tsc_page(void) { return NULL; } -static inline u64 hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg, - u64 *cur_tsc) +static __always_inline bool +hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg, u64 *cur_tsc, u64 *time) { - return U64_MAX; + return false; } + +static inline int hv_stimer_cleanup(unsigned int cpu) { return 0; } +static inline void hv_stimer_legacy_init(unsigned int cpu, int sint) {} +static inline void hv_stimer_legacy_cleanup(unsigned int cpu) {} +static inline void hv_stimer_global_cleanup(void) {} +static inline void hv_stimer0_isr(void) {} + #endif /* CONFIG_HYPERV_TIMER */ #endif |