iommufd.c (31014aef9e4cc0326b5df0c3149e757a2b490176) iommufd.c (9048c7341c4df9cae04c154a8b0f556dbe913358)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES
4 */
5#include <linux/vfio.h>
6#include <linux/iommufd.h>
7
8#include "vfio.h"

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135 vdev->iommufd_device = NULL;
136}
137EXPORT_SYMBOL_GPL(vfio_iommufd_physical_unbind);
138
139int vfio_iommufd_physical_attach_ioas(struct vfio_device *vdev, u32 *pt_id)
140{
141 int rc;
142
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES
4 */
5#include <linux/vfio.h>
6#include <linux/iommufd.h>
7
8#include "vfio.h"

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135 vdev->iommufd_device = NULL;
136}
137EXPORT_SYMBOL_GPL(vfio_iommufd_physical_unbind);
138
139int vfio_iommufd_physical_attach_ioas(struct vfio_device *vdev, u32 *pt_id)
140{
141 int rc;
142
143 lockdep_assert_held(&vdev->dev_set->lock);
144
145 if (WARN_ON(!vdev->iommufd_device))
146 return -EINVAL;
147
148 if (vdev->iommufd_attached)
149 return -EBUSY;
150
143 rc = iommufd_device_attach(vdev->iommufd_device, pt_id);
144 if (rc)
145 return rc;
146 vdev->iommufd_attached = true;
147 return 0;
148}
149EXPORT_SYMBOL_GPL(vfio_iommufd_physical_attach_ioas);
150
151 rc = iommufd_device_attach(vdev->iommufd_device, pt_id);
152 if (rc)
153 return rc;
154 vdev->iommufd_attached = true;
155 return 0;
156}
157EXPORT_SYMBOL_GPL(vfio_iommufd_physical_attach_ioas);
158
159void vfio_iommufd_physical_detach_ioas(struct vfio_device *vdev)
160{
161 lockdep_assert_held(&vdev->dev_set->lock);
162
163 if (WARN_ON(!vdev->iommufd_device) || !vdev->iommufd_attached)
164 return;
165
166 iommufd_device_detach(vdev->iommufd_device);
167 vdev->iommufd_attached = false;
168}
169EXPORT_SYMBOL_GPL(vfio_iommufd_physical_detach_ioas);
170
151/*
152 * The emulated standard ops mean that vfio_device is going to use the
153 * "mdev path" and will call vfio_pin_pages()/vfio_dma_rw(). Drivers using this
154 * ops set should call vfio_register_emulated_iommu_dev(). Drivers that do
155 * not call vfio_pin_pages()/vfio_dma_rw() have no need to provide dma_unmap.
156 */
157
158static void vfio_emulated_unmap(void *data, unsigned long iova,

--- 55 unchanged lines hidden --- 		171/*
172 * The emulated standard ops mean that vfio_device is going to use the
173 * "mdev path" and will call vfio_pin_pages()/vfio_dma_rw(). Drivers using this
174 * ops set should call vfio_register_emulated_iommu_dev(). Drivers that do
175 * not call vfio_pin_pages()/vfio_dma_rw() have no need to provide dma_unmap.
176 */
177
178static void vfio_emulated_unmap(void *data, unsigned long iova,

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