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/*
* Freescale Management Complex (MC) device passthrough using VFIO
*
* Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
* Author: Bharat Bhushan <bharat.bhushan@nxp.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/vfio.h>
#include <linux/slab.h>
#include <linux/types.h>
#include "vfio_fsl_mc_private.h"
#include "../../staging/fsl-mc/include/mc.h"
int vfio_fsl_mc_irqs_init(struct vfio_fsl_mc_device *vdev)
{
struct fsl_mc_device *mc_dev = vdev->mc_dev;
struct vfio_fsl_mc_irq *mc_irq;
int irq_count;
int ret, i;
/* Device does not support any interrupt */
if (mc_dev->obj_desc.irq_count == 0)
return 0;
irq_count = mc_dev->obj_desc.irq_count;
mc_irq = kcalloc(irq_count, sizeof(*mc_irq), GFP_KERNEL);
if (mc_irq == NULL)
return -ENOMEM;
/* Allocate IRQs */
ret = fsl_mc_allocate_irqs(mc_dev);
if (ret) {
kfree(mc_irq);
return ret;
}
for (i = 0; i < irq_count; i++) {
mc_irq[i].count = 1;
mc_irq[i].flags = 0;
}
vdev->mc_irqs = mc_irq;
return 0;
}
/* Free All IRQs for the given MC object */
void vfio_fsl_mc_irqs_cleanup(struct vfio_fsl_mc_device *vdev)
{
struct fsl_mc_device *mc_dev = vdev->mc_dev;
/* Device does not support any interrupt */
if (mc_dev->obj_desc.irq_count == 0)
return;
fsl_mc_free_irqs(mc_dev);
kfree(vdev->mc_irqs);
}
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