1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3  * Copyright 2013-2016 Freescale Semiconductor Inc.
17 	struct fsl_mc_device *mc_dev = vdev->mc_dev;  in vfio_fsl_mc_irqs_allocate()
23 	if (mc_dev->obj_desc.irq_count == 0)  in vfio_fsl_mc_irqs_allocate()
27 	if (vdev->mc_irqs)  in vfio_fsl_mc_irqs_allocate()
30 	irq_count = mc_dev->obj_desc.irq_count;  in vfio_fsl_mc_irqs_allocate()
34 		return -ENOMEM;  in vfio_fsl_mc_irqs_allocate()
48 	vdev->mc_irqs = mc_irq;  in vfio_fsl_mc_irqs_allocate()
57 	eventfd_signal(mc_irq->trigger);  in vfio_fsl_mc_irq_handler()
64 	struct vfio_fsl_mc_irq *irq = &vdev->mc_irqs[index];  in vfio_set_trigger()  local
69 	hwirq = vdev->mc_dev->irqs[index]->virq;  in vfio_set_trigger()
70 	if (irq->trigger) {  in vfio_set_trigger()
71 		free_irq(hwirq, irq);  in vfio_set_trigger()
72 		kfree(irq->name);  in vfio_set_trigger()
73 		eventfd_ctx_put(irq->trigger);  in vfio_set_trigger()
74 		irq->trigger = NULL;  in vfio_set_trigger()
80 	irq->name = kasprintf(GFP_KERNEL_ACCOUNT, "vfio-irq[%d](%s)",  in vfio_set_trigger()
81 			    hwirq, dev_name(&vdev->mc_dev->dev));  in vfio_set_trigger()
82 	if (!irq->name)  in vfio_set_trigger()
83 		return -ENOMEM;  in vfio_set_trigger()
87 		kfree(irq->name);  in vfio_set_trigger()
91 	irq->trigger = trigger;  in vfio_set_trigger()
94 		  irq->name, irq);  in vfio_set_trigger()
96 		kfree(irq->name);  in vfio_set_trigger()
98 		irq->trigger = NULL;  in vfio_set_trigger()
106 				       unsigned int index, unsigned int start,  in vfio_fsl_mc_set_irq_trigger()  argument
110 	struct fsl_mc_device *mc_dev = vdev->mc_dev;  in vfio_fsl_mc_set_irq_trigger()
111 	struct vfio_fsl_mc_irq *irq;  in vfio_fsl_mc_set_irq_trigger()  local
112 	struct device *cont_dev = fsl_mc_cont_dev(&mc_dev->dev);  in vfio_fsl_mc_set_irq_trigger()
117 		return vfio_set_trigger(vdev, index, -1);  in vfio_fsl_mc_set_irq_trigger()
119 	if (start != 0 || count != 1)  in vfio_fsl_mc_set_irq_trigger()
120 		return -EINVAL;  in vfio_fsl_mc_set_irq_trigger()
122 	mutex_lock(&vdev->vdev.dev_set->lock);  in vfio_fsl_mc_set_irq_trigger()
131 	mutex_unlock(&vdev->vdev.dev_set->lock);  in vfio_fsl_mc_set_irq_trigger()
139 	irq = &vdev->mc_irqs[index];  in vfio_fsl_mc_set_irq_trigger()
142 		if (irq->trigger)  in vfio_fsl_mc_set_irq_trigger()
143 			eventfd_signal(irq->trigger);  in vfio_fsl_mc_set_irq_trigger()
148 		if (trigger && irq->trigger)  in vfio_fsl_mc_set_irq_trigger()
149 			eventfd_signal(irq->trigger);  in vfio_fsl_mc_set_irq_trigger()
155 	mutex_unlock(&vdev->vdev.dev_set->lock);  in vfio_fsl_mc_set_irq_trigger()
162 			       unsigned int start, unsigned int count,  in vfio_fsl_mc_set_irqs_ioctl()  argument
166 		return  vfio_fsl_mc_set_irq_trigger(vdev, index, start,  in vfio_fsl_mc_set_irqs_ioctl()
169 		return -EINVAL;  in vfio_fsl_mc_set_irqs_ioctl()
175 	struct fsl_mc_device *mc_dev = vdev->mc_dev;  in vfio_fsl_mc_irqs_cleanup()
176 	int irq_count = mc_dev->obj_desc.irq_count;  in vfio_fsl_mc_irqs_cleanup()
183 	if (!vdev->mc_irqs)  in vfio_fsl_mc_irqs_cleanup()
187 		vfio_set_trigger(vdev, i, -1);  in vfio_fsl_mc_irqs_cleanup()
190 	kfree(vdev->mc_irqs);  in vfio_fsl_mc_irqs_cleanup()
191 	vdev->mc_irqs = NULL;  in vfio_fsl_mc_irqs_cleanup()