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PK ! 0�*� � processor.hnu �[��� /* SPDX-License-Identifier: GPL-2.0-only */ #ifndef _ASM_POWERPC_VDSO_PROCESSOR_H #define _ASM_POWERPC_VDSO_PROCESSOR_H #ifndef __ASSEMBLY__ /* Macros for adjusting thread priority (hardware multi-threading) */ #ifdef CONFIG_PPC64 #define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority") #define HMT_low() asm volatile("or 1, 1, 1 # low priority") #define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority") #define HMT_medium() asm volatile("or 2, 2, 2 # medium priority") #define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority") #define HMT_high() asm volatile("or 3, 3, 3 # high priority") #else #define HMT_very_low() #define HMT_low() #define HMT_medium_low() #define HMT_medium() #define HMT_medium_high() #define HMT_high() #endif #ifdef CONFIG_PPC64 #define cpu_relax() do { HMT_low(); HMT_medium(); barrier(); } while (0) #else #define cpu_relax() barrier() #endif #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */ PK ! ��� � clocksource.hnu �[��� /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_VDSO_CLOCKSOURCE_H #define _ASM_POWERPC_VDSO_CLOCKSOURCE_H #define VDSO_ARCH_CLOCKMODES VDSO_CLOCKMODE_ARCHTIMER #endif PK ! MO;r r vsyscall.hnu �[��� /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_VDSO_VSYSCALL_H #define _ASM_POWERPC_VDSO_VSYSCALL_H #ifndef __ASSEMBLY__ #include <linux/timekeeper_internal.h> #include <asm/vdso_datapage.h> /* * Update the vDSO data page to keep in sync with kernel timekeeping. */ static __always_inline struct vdso_data *__arch_get_k_vdso_data(void) { return vdso_data->data; } #define __arch_get_k_vdso_data __arch_get_k_vdso_data /* The asm-generic header needs to be included after the definitions above */ #include <asm-generic/vdso/vsyscall.h> #endif /* !__ASSEMBLY__ */ #endif /* _ASM_POWERPC_VDSO_VSYSCALL_H */ PK ! ���aa a gettimeofday.hnu �[��� /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_VDSO_GETTIMEOFDAY_H #define _ASM_POWERPC_VDSO_GETTIMEOFDAY_H #include <asm/page.h> #ifdef __ASSEMBLY__ #include <asm/ppc_asm.h> /* * The macros sets two stack frames, one for the caller and one for the callee * because there are no requirement for the caller to set a stack frame when * calling VDSO so it may have omitted to set one, especially on PPC64 */ .macro cvdso_call funct .cfi_startproc PPC_STLU r1, -PPC_MIN_STKFRM(r1) mflr r0 .cfi_register lr, r0 PPC_STLU r1, -PPC_MIN_STKFRM(r1) PPC_STL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) #ifdef __powerpc64__ PPC_STL r2, PPC_MIN_STKFRM + STK_GOT(r1) #endif get_datapage r5 addi r5, r5, VDSO_DATA_OFFSET bl DOTSYM(\funct) PPC_LL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) #ifdef __powerpc64__ PPC_LL r2, PPC_MIN_STKFRM + STK_GOT(r1) #endif cmpwi r3, 0 mtlr r0 .cfi_restore lr addi r1, r1, 2 * PPC_MIN_STKFRM crclr so beqlr+ crset so neg r3, r3 blr .cfi_endproc .endm .macro cvdso_call_time funct .cfi_startproc PPC_STLU r1, -PPC_MIN_STKFRM(r1) mflr r0 .cfi_register lr, r0 PPC_STLU r1, -PPC_MIN_STKFRM(r1) PPC_STL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) #ifdef __powerpc64__ PPC_STL r2, PPC_MIN_STKFRM + STK_GOT(r1) #endif get_datapage r4 addi r4, r4, VDSO_DATA_OFFSET bl DOTSYM(\funct) PPC_LL r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1) #ifdef __powerpc64__ PPC_LL r2, PPC_MIN_STKFRM + STK_GOT(r1) #endif crclr so mtlr r0 .cfi_restore lr addi r1, r1, 2 * PPC_MIN_STKFRM blr .cfi_endproc .endm #else #include <asm/vdso/timebase.h> #include <asm/barrier.h> #include <asm/unistd.h> #include <uapi/linux/time.h> #define VDSO_HAS_CLOCK_GETRES 1 #define VDSO_HAS_TIME 1 static __always_inline int do_syscall_2(const unsigned long _r0, const unsigned long _r3, const unsigned long _r4) { register long r0 asm("r0") = _r0; register unsigned long r3 asm("r3") = _r3; register unsigned long r4 asm("r4") = _r4; register int ret asm ("r3"); asm volatile( " sc\n" " bns+ 1f\n" " neg %0, %0\n" "1:\n" : "=r" (ret), "+r" (r4), "+r" (r0) : "r" (r3) : "memory", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "cr0", "ctr"); return ret; } static __always_inline int gettimeofday_fallback(struct __kernel_old_timeval *_tv, struct timezone *_tz) { return do_syscall_2(__NR_gettimeofday, (unsigned long)_tv, (unsigned long)_tz); } #ifdef __powerpc64__ static __always_inline int clock_gettime_fallback(clockid_t _clkid, struct __kernel_timespec *_ts) { return do_syscall_2(__NR_clock_gettime, _clkid, (unsigned long)_ts); } static __always_inline int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts) { return do_syscall_2(__NR_clock_getres, _clkid, (unsigned long)_ts); } #else #define BUILD_VDSO32 1 static __always_inline int clock_gettime_fallback(clockid_t _clkid, struct __kernel_timespec *_ts) { return do_syscall_2(__NR_clock_gettime64, _clkid, (unsigned long)_ts); } static __always_inline int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts) { return do_syscall_2(__NR_clock_getres_time64, _clkid, (unsigned long)_ts); } static __always_inline int clock_gettime32_fallback(clockid_t _clkid, struct old_timespec32 *_ts) { return do_syscall_2(__NR_clock_gettime, _clkid, (unsigned long)_ts); } static __always_inline int clock_getres32_fallback(clockid_t _clkid, struct old_timespec32 *_ts) { return do_syscall_2(__NR_clock_getres, _clkid, (unsigned long)_ts); } #endif static __always_inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd) { return get_tb(); } const struct vdso_data *__arch_get_vdso_data(void); #ifdef CONFIG_TIME_NS static __always_inline const struct vdso_data *__arch_get_timens_vdso_data(const struct vdso_data *vd) { return (void *)vd + PAGE_SIZE; } #endif static inline bool vdso_clocksource_ok(const struct vdso_data *vd) { return true; } #define vdso_clocksource_ok vdso_clocksource_ok /* * powerpc specific delta calculation. * * This variant removes the masking of the subtraction because the * clocksource mask of all VDSO capable clocksources on powerpc is U64_MAX * which would result in a pointless operation. The compiler cannot * optimize it away as the mask comes from the vdso data and is not compile * time constant. */ static __always_inline u64 vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult) { return (cycles - last) * mult; } #define vdso_calc_delta vdso_calc_delta #ifndef __powerpc64__ static __always_inline u64 vdso_shift_ns(u64 ns, unsigned long shift) { u32 hi = ns >> 32; u32 lo = ns; lo >>= shift; lo |= hi << (32 - shift); hi >>= shift; if (likely(hi == 0)) return lo; return ((u64)hi << 32) | lo; } #define vdso_shift_ns vdso_shift_ns #endif #ifdef __powerpc64__ int __c_kernel_clock_gettime(clockid_t clock, struct __kernel_timespec *ts, const struct vdso_data *vd); int __c_kernel_clock_getres(clockid_t clock_id, struct __kernel_timespec *res, const struct vdso_data *vd); #else int __c_kernel_clock_gettime(clockid_t clock, struct old_timespec32 *ts, const struct vdso_data *vd); int __c_kernel_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts, const struct vdso_data *vd); int __c_kernel_clock_getres(clockid_t clock_id, struct old_timespec32 *res, const struct vdso_data *vd); #endif int __c_kernel_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz, const struct vdso_data *vd); __kernel_old_time_t __c_kernel_time(__kernel_old_time_t *time, const struct vdso_data *vd); #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_VDSO_GETTIMEOFDAY_H */ PK ! �� � timebase.hnu �[��� /* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Common timebase prototypes and such for all ppc machines. */ #ifndef _ASM_POWERPC_VDSO_TIMEBASE_H #define _ASM_POWERPC_VDSO_TIMEBASE_H #include <asm/reg.h> /* * We use __powerpc64__ here because we want the compat VDSO to use the 32-bit * version below in the else case of the ifdef. */ #if defined(__powerpc64__) && (defined(CONFIG_PPC_CELL) || defined(CONFIG_E500)) #define mftb() ({unsigned long rval; \ asm volatile( \ "90: mfspr %0, %2;\n" \ ASM_FTR_IFSET( \ "97: cmpwi %0,0;\n" \ " beq- 90b;\n", "", %1) \ : "=r" (rval) \ : "i" (CPU_FTR_CELL_TB_BUG), "i" (SPRN_TBRL) : "cr0"); \ rval;}) #elif defined(CONFIG_PPC_8xx) #define mftb() ({unsigned long rval; \ asm volatile("mftbl %0" : "=r" (rval)); rval;}) #else #define mftb() ({unsigned long rval; \ asm volatile("mfspr %0, %1" : \ "=r" (rval) : "i" (SPRN_TBRL)); rval;}) #endif /* !CONFIG_PPC_CELL */ #if defined(CONFIG_PPC_8xx) #define mftbu() ({unsigned long rval; \ asm volatile("mftbu %0" : "=r" (rval)); rval;}) #else #define mftbu() ({unsigned long rval; \ asm volatile("mfspr %0, %1" : "=r" (rval) : \ "i" (SPRN_TBRU)); rval;}) #endif #define mttbl(v) asm volatile("mttbl %0":: "r"(v)) #define mttbu(v) asm volatile("mttbu %0":: "r"(v)) static __always_inline u64 get_tb(void) { unsigned int tbhi, tblo, tbhi2; /* * We use __powerpc64__ here not CONFIG_PPC64 because we want the compat * VDSO to use the 32-bit compatible version in the while loop below. */ if (__is_defined(__powerpc64__)) return mftb(); do { tbhi = mftbu(); tblo = mftb(); tbhi2 = mftbu(); } while (tbhi != tbhi2); return ((u64)tbhi << 32) | tblo; } static inline void set_tb(unsigned int upper, unsigned int lower) { mtspr(SPRN_TBWL, 0); mtspr(SPRN_TBWU, upper); mtspr(SPRN_TBWL, lower); } #endif /* _ASM_POWERPC_VDSO_TIMEBASE_H */ PK ! 0�*� � processor.hnu �[��� PK ! ��� � $ clocksource.hnu �[��� PK ! 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