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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/um/drivers/vfio_user.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef __UM_VFIO_USER_H

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#define __UM_VFIO_USER_H

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struct uml_vfio_user_device {

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	int device;

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	struct {

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		uint64_t size;

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		uint64_t offset;

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	} *region;

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	int num_regions;

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	int32_t *irqfd;

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	int irq_count;

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};

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int uml_vfio_user_open_container(void);

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int uml_vfio_user_setup_iommu(int container);

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int uml_vfio_user_get_group_id(const char *device);

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int uml_vfio_user_open_group(int group_id);

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int uml_vfio_user_set_container(int container, int group);

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int uml_vfio_user_unset_container(int container, int group);

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int uml_vfio_user_setup_device(struct uml_vfio_user_device *dev,

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			       int group, const char *device);

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void uml_vfio_user_teardown_device(struct uml_vfio_user_device *dev);

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int uml_vfio_user_activate_irq(struct uml_vfio_user_device *dev, int index);

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void uml_vfio_user_deactivate_irq(struct uml_vfio_user_device *dev, int index);

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int uml_vfio_user_update_irqs(struct uml_vfio_user_device *dev);

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int uml_vfio_user_cfgspace_read(struct uml_vfio_user_device *dev,

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				unsigned int offset, void *buf, int size);

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int uml_vfio_user_cfgspace_write(struct uml_vfio_user_device *dev,

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				 unsigned int offset, const void *buf, int size);

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int uml_vfio_user_bar_read(struct uml_vfio_user_device *dev, int bar,

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			   unsigned int offset, void *buf, int size);

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int uml_vfio_user_bar_write(struct uml_vfio_user_device *dev, int bar,

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			    unsigned int offset, const void *buf, int size);

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#endif /* __UM_VFIO_USER_H */

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