C++ (Cpp) bind_evtchn_to_irq示例

示例#1

文件： hvc_xen.c 项目： CSCLOG/beaglebone

static int __init xen_hvc_init(void)
{
	struct hvc_struct *hp;
	struct hv_ops *ops;

	if (!xen_pv_domain())
		return -ENODEV;

	if (xen_initial_domain()) {
		ops = &dom0_hvc_ops;
		xencons_irq = bind_virq_to_irq(VIRQ_CONSOLE, 0);
	} else {
		if (!xen_start_info->console.domU.evtchn)
			return -ENODEV;

		ops = &domU_hvc_ops;
		xencons_irq = bind_evtchn_to_irq(xen_start_info->console.domU.evtchn);
	}
	if (xencons_irq < 0)
		xencons_irq = 0; /* NO_IRQ */
	else
		irq_set_noprobe(xencons_irq);

	hp = hvc_alloc(HVC_COOKIE, xencons_irq, ops, 256);
	if (IS_ERR(hp))
		return PTR_ERR(hp);

	hvc = hp;

	console_pfn = mfn_to_pfn(xen_start_info->console.domU.mfn);

	return 0;
}

示例#2

文件： hvc_xen.c 项目： PennPanda/linux-repo

static int __init xen_init(void)
{
	struct hvc_struct *hp;

	if (!is_running_on_xen())
		return 0;

	xencons_irq = bind_evtchn_to_irq(xen_start_info->console.domU.evtchn);
	if (xencons_irq < 0)
		xencons_irq = 0 /* NO_IRQ */;
	hp = hvc_alloc(HVC_COOKIE, xencons_irq, &hvc_ops, 256);
	if (IS_ERR(hp))
		return PTR_ERR(hp);

	hvc = hp;
	return 0;
}

示例#3

int bind_evtchn_to_irqhandler(
	unsigned int evtchn,
	irqreturn_t (*handler)(int, void *, struct pt_regs *),
	unsigned long irqflags,
	const char *devname,
	void *dev_id)
{
	unsigned int irq;
	int retval;

	irq = bind_evtchn_to_irq(evtchn);
	retval = request_irq(irq, handler, irqflags, devname, dev_id);
	if (retval != 0) {
		unbind_from_irq(irq);
		return retval;
	}

	return irq;
}

示例#4

文件： hvc_xen.c 项目： johnny/CobraDroidBeta

static int __init xen_init(void)
{
	struct hvc_struct *hp;

	if (!xen_pv_domain() ||
	    xen_initial_domain() ||
	    !xen_start_info->console.domU.evtchn)
		return -ENODEV;

	xencons_irq = bind_evtchn_to_irq(xen_start_info->console.domU.evtchn);
	if (xencons_irq < 0)
		xencons_irq = 0; /* NO_IRQ */

	hp = hvc_alloc(HVC_COOKIE, xencons_irq, &hvc_ops, 256);
	if (IS_ERR(hp))
		return PTR_ERR(hp);

	hvc = hp;

	console_pfn = mfn_to_pfn(xen_start_info->console.domU.mfn);

	return 0;
}