25bcd81b8d
Use nanotime instread of binuptime. This change is for old and legacy platforms and does not impact any armv7 and later. Might be MFCed to 13.0 once armv6 support is finally dropped in 14.0 Sponsored by: Stormshield Reviewed by: mw Obtained from: Semihalf Differential revision: https://reviews.freebsd.org/D33719
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/* $NetBSD: cpu.h,v 1.2 2001/02/23 21:23:52 reinoud Exp $ */
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/* $FreeBSD$ */
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#ifndef MACHINE_CPU_H
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#define MACHINE_CPU_H
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#include <machine/armreg.h>
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#include <machine/frame.h>
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void cpu_halt(void);
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#ifdef _KERNEL
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#include <machine/cpu-v6.h>
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static __inline uint64_t
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get_cyclecount(void)
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{
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#if __ARM_ARCH > 6 || (__ARM_ARCH == 6 && defined(CPU_ARM1176))
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#if (__ARM_ARCH > 6) && defined(DEV_PMU)
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if (pmu_attched) {
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u_int cpu;
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uint64_t h, h2;
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uint32_t l, r;
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cpu = PCPU_GET(cpuid);
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h = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]);
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l = cp15_pmccntr_get();
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/* In case interrupts are disabled we need to check for overflow. */
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r = cp15_pmovsr_get();
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if (r & PMU_OVSR_C) {
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atomic_add_32(&ccnt_hi[cpu], 1);
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/* Clear the event. */
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cp15_pmovsr_set(PMU_OVSR_C);
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}
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/* Make sure there was no wrap-around while we read the lo half. */
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h2 = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]);
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if (h != h2)
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l = cp15_pmccntr_get();
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return (h2 << 32 | l);
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} else
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#endif
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return cp15_pmccntr_get();
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#else /* No performance counters, so use nanotime(9). */
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struct timespec tv;
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nanotime(&tv);
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return (tv.tv_sec * (uint64_t)1000000000ull + tv.tv_nsec);
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#endif
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}
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#endif
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#define TRAPF_USERMODE(frame) ((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
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#define TRAPF_PC(tfp) ((tfp)->tf_pc)
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#define cpu_getstack(td) ((td)->td_frame->tf_usr_sp)
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#define cpu_setstack(td, sp) ((td)->td_frame->tf_usr_sp = (sp))
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#define cpu_spinwait() /* nothing */
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#define cpu_lock_delay() DELAY(1)
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#define ARM_NVEC 8
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#define ARM_VEC_ALL 0xffffffff
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extern vm_offset_t vector_page;
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/*
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* Params passed into initarm. If you change the size of this you will
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* need to update locore.S to allocate more memory on the stack before
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* it calls initarm.
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*/
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struct arm_boot_params {
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register_t abp_size; /* Size of this structure */
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register_t abp_r0; /* r0 from the boot loader */
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register_t abp_r1; /* r1 from the boot loader */
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register_t abp_r2; /* r2 from the boot loader */
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register_t abp_r3; /* r3 from the boot loader */
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vm_offset_t abp_physaddr; /* The kernel physical address */
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vm_offset_t abp_pagetable; /* The early page table */
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};
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void arm_vector_init(vm_offset_t, int);
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void fork_trampoline(void);
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void identify_arm_cpu(void);
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void *initarm(struct arm_boot_params *);
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extern char btext[];
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extern char etext[];
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int badaddr_read(void *, size_t, void *);
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#endif /* !MACHINE_CPU_H */
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