Esempi in C++ (Cpp) per generic_timer_pcounter_read

Esempio n. 1

File: generic_timer.c Progetto: IRT-SystemX/xvisor-next

void generic_timer_vcpu_context_save(void *vcpu_ptr, void *context)
{
	u64 ev_nsecs;
	struct generic_timer_context *cntx = context;

	if (!cntx) {
		return;
	}

#ifdef HAVE_GENERIC_TIMER_REGS_SAVE
	generic_timer_regs_save(cntx);
#else
	cntx->cntpctl = generic_timer_reg_read(GENERIC_TIMER_REG_PHYS_CTRL);
	cntx->cntvctl = generic_timer_reg_read(GENERIC_TIMER_REG_VIRT_CTRL);
	cntx->cntpcval = generic_timer_reg_read64(GENERIC_TIMER_REG_PHYS_CVAL);
	cntx->cntvcval = generic_timer_reg_read64(GENERIC_TIMER_REG_VIRT_CVAL);
	cntx->cntkctl = generic_timer_reg_read(GENERIC_TIMER_REG_KCTL);
	generic_timer_reg_write(GENERIC_TIMER_REG_PHYS_CTRL,
				GENERIC_TIMER_CTRL_IT_MASK);
	generic_timer_reg_write(GENERIC_TIMER_REG_VIRT_CTRL,
				GENERIC_TIMER_CTRL_IT_MASK);
#endif

	if ((cntx->cntpctl & GENERIC_TIMER_CTRL_ENABLE) &&
	    !(cntx->cntpctl & GENERIC_TIMER_CTRL_IT_MASK)) {
		ev_nsecs = cntx->cntpcval - generic_timer_pcounter_read();
		/* check if timer is expired while saving the context */
		if (((s64)ev_nsecs) < 0) {
			ev_nsecs = 0;
		} else {
			ev_nsecs = vmm_clocksource_delta2nsecs(ev_nsecs,
							generic_timer_mult,
							generic_timer_shift);
		}
		vmm_timer_event_start(&cntx->phys_ev, ev_nsecs);
	}

	if ((cntx->cntvctl & GENERIC_TIMER_CTRL_ENABLE) &&
	    !(cntx->cntvctl & GENERIC_TIMER_CTRL_IT_MASK)) {
		ev_nsecs = cntx->cntvcval + cntx->cntvoff -
					generic_timer_pcounter_read();
		/* check if timer is expired while saving the context */
		if (((s64)ev_nsecs) < 0) {
			ev_nsecs = 0;
		} else {
			ev_nsecs = vmm_clocksource_delta2nsecs(ev_nsecs,
							generic_timer_mult,
							generic_timer_shift);
		}
		vmm_timer_event_start(&cntx->virt_ev, ev_nsecs);
	}
}

Esempio n. 2

File: generic_timer.c Progetto: CoryXie/xvisor

void generic_timer_vcpu_context_init(struct generic_timer_context *cntx)
{
	cntx->cntpctl = GENERIC_TIMER_CTRL_IT_MASK;
	cntx->cntvctl = GENERIC_TIMER_CTRL_IT_MASK;
	cntx->cntpcval = 0;
	cntx->cntvcval = 0;
	cntx->cntkctl = 0;
	cntx->cntvoff = generic_timer_pcounter_read();
}

Esempio n. 3

File: generic_timer.c Progetto: IRT-SystemX/xvisor-next

void generic_timer_vcpu_context_post_restore(void *vcpu_ptr, void *context)
{
	u64 pcnt;
	struct vmm_vcpu *vcpu = vcpu_ptr;
	struct generic_timer_context *cntx = context;

	if (!cntx) {
		return;
	}

	pcnt = generic_timer_pcounter_read();

	if ((cntx->cntpctl & GENERIC_TIMER_CTRL_ENABLE) &&
	    !(cntx->cntpctl & GENERIC_TIMER_CTRL_IT_MASK) &&
	     (cntx->cntpcval <= pcnt)) {
		cntx->cntpctl |= GENERIC_TIMER_CTRL_IT_MASK;
		generic_phys_irq_inject(vcpu, cntx);
	}

	if ((cntx->cntvctl & GENERIC_TIMER_CTRL_ENABLE) &&
	    !(cntx->cntvctl & GENERIC_TIMER_CTRL_IT_MASK) &&
	     ((cntx->cntvoff + cntx->cntvcval) <= pcnt)) {
		cntx->cntvctl |= GENERIC_TIMER_CTRL_IT_MASK;
		generic_virt_irq_inject(vcpu, cntx);
	}

#ifdef HAVE_GENERIC_TIMER_REGS_RESTORE
	generic_timer_regs_restore(cntx);
#else
	generic_timer_reg_write64(GENERIC_TIMER_REG_VIRT_OFF, cntx->cntvoff);
	generic_timer_reg_write(GENERIC_TIMER_REG_KCTL, cntx->cntkctl);
	generic_timer_reg_write64(GENERIC_TIMER_REG_PHYS_CVAL, cntx->cntpcval);
	generic_timer_reg_write64(GENERIC_TIMER_REG_VIRT_CVAL, cntx->cntvcval);
	generic_timer_reg_write(GENERIC_TIMER_REG_PHYS_CTRL, cntx->cntpctl);
	generic_timer_reg_write(GENERIC_TIMER_REG_VIRT_CTRL, cntx->cntvctl);
#endif
}

Esempio n. 4

File: generic_timer.c Progetto: IRT-SystemX/xvisor-next

static u64 generic_counter_read(struct vmm_clocksource *cs)
{
	return generic_timer_pcounter_read();
}