52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
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/*
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* VFIO platform devices interrupt handling
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*
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* Copyright (C) 2013 - Virtual Open Systems
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* Author: Antonios Motakis <a.motakis@virtualopensystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/eventfd.h>
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#include <linux/interrupt.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/vfio.h>
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#include <linux/irq.h>
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#include "vfio_platform_private.h"
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int vfio_platform_irq_init(struct vfio_platform_device *vdev)
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{
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int cnt = 0, i;
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while (vdev->get_irq(vdev, cnt) >= 0)
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cnt++;
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vdev->irqs = kcalloc(cnt, sizeof(struct vfio_platform_irq), GFP_KERNEL);
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if (!vdev->irqs)
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return -ENOMEM;
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for (i = 0; i < cnt; i++) {
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vdev->irqs[i].flags = 0;
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vdev->irqs[i].count = 1;
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}
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vdev->num_irqs = cnt;
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return 0;
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}
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void vfio_platform_irq_cleanup(struct vfio_platform_device *vdev)
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{
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vdev->num_irqs = 0;
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kfree(vdev->irqs);
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}
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