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86 lines
2.1 KiB
86 lines
2.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2013 - Virtual Open Systems |
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* Author: Antonios Motakis <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/vfio.h> |
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#include <linux/platform_device.h> |
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#include "vfio_platform_private.h" |
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#define DRIVER_VERSION "0.10" |
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#define DRIVER_AUTHOR "Antonios Motakis <[email protected]>" |
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#define DRIVER_DESC "VFIO for platform devices - User Level meta-driver" |
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static bool reset_required = true; |
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module_param(reset_required, bool, 0444); |
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MODULE_PARM_DESC(reset_required, "override reset requirement (default: 1)"); |
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/* probing devices from the linux platform bus */ |
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static struct resource *get_platform_resource(struct vfio_platform_device *vdev, |
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int num) |
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{ |
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struct platform_device *dev = (struct platform_device *) vdev->opaque; |
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return platform_get_mem_or_io(dev, num); |
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} |
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static int get_platform_irq(struct vfio_platform_device *vdev, int i) |
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{ |
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struct platform_device *pdev = (struct platform_device *) vdev->opaque; |
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return platform_get_irq_optional(pdev, i); |
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} |
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static int vfio_platform_probe(struct platform_device *pdev) |
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{ |
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struct vfio_platform_device *vdev; |
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int ret; |
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vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); |
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if (!vdev) |
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return -ENOMEM; |
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vdev->opaque = (void *) pdev; |
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vdev->name = pdev->name; |
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vdev->flags = VFIO_DEVICE_FLAGS_PLATFORM; |
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vdev->get_resource = get_platform_resource; |
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vdev->get_irq = get_platform_irq; |
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vdev->reset_required = reset_required; |
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ret = vfio_platform_probe_common(vdev, &pdev->dev); |
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if (ret) { |
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kfree(vdev); |
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return ret; |
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} |
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dev_set_drvdata(&pdev->dev, vdev); |
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return 0; |
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} |
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static int vfio_platform_remove(struct platform_device *pdev) |
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{ |
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struct vfio_platform_device *vdev = dev_get_drvdata(&pdev->dev); |
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vfio_platform_remove_common(vdev); |
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kfree(vdev); |
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return 0; |
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} |
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static struct platform_driver vfio_platform_driver = { |
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.probe = vfio_platform_probe, |
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.remove = vfio_platform_remove, |
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.driver = { |
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.name = "vfio-platform", |
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}, |
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}; |
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module_platform_driver(vfio_platform_driver); |
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MODULE_VERSION(DRIVER_VERSION); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_AUTHOR(DRIVER_AUTHOR); |
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MODULE_DESCRIPTION(DRIVER_DESC);
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