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a0e2cb6a90
Implement a new virtual PCI driver based on the VFIO framework. This driver allows users to pass through PCI devices to UML via VFIO. Currently, only MSI-X capable devices are supported, and it is assumed that drivers will use MSI-X. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250413154421.517878-1-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/* 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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