1802d0beec
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
101 lines
2.3 KiB
C
101 lines
2.3 KiB
C
// 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 <a.motakis@virtualopensystems.com>
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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 <a.motakis@virtualopensystems.com>"
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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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int i;
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for (i = 0; i < dev->num_resources; i++) {
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struct resource *r = &dev->resource[i];
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if (resource_type(r) & (IORESOURCE_MEM|IORESOURCE_IO)) {
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if (!num)
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return r;
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num--;
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}
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}
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return NULL;
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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(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->parent_module = THIS_MODULE;
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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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static int vfio_platform_remove(struct platform_device *pdev)
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{
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struct vfio_platform_device *vdev;
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vdev = vfio_platform_remove_common(&pdev->dev);
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if (vdev) {
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kfree(vdev);
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return 0;
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}
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return -EINVAL;
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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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