include/linux/virtio_pci_legacy.h

File Facts

System

Linux kernel

Corpus path

include/linux/virtio_pci_legacy.h

Extension

.h

Size

1401 bytes

Lines

41

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/mod_devicetable.h
• linux/pci.h
• linux/virtio_pci.h

Detected Declarations

• struct virtio_pci_legacy_device

Annotated Snippet

struct virtio_pci_legacy_device {
	struct pci_dev *pci_dev;

	/* Where to read and clear interrupt */
	u8 __iomem *isr;
	/* The IO mapping for the PCI config space (legacy mode only) */
	void __iomem *ioaddr;

	struct virtio_device_id id;
};

u64 vp_legacy_get_features(struct virtio_pci_legacy_device *ldev);
u64 vp_legacy_get_driver_features(struct virtio_pci_legacy_device *ldev);
void vp_legacy_set_features(struct virtio_pci_legacy_device *ldev,
			u32 features);
u8 vp_legacy_get_status(struct virtio_pci_legacy_device *ldev);
void vp_legacy_set_status(struct virtio_pci_legacy_device *ldev,
			u8 status);
u16 vp_legacy_queue_vector(struct virtio_pci_legacy_device *ldev,
			   u16 idx, u16 vector);
u16 vp_legacy_config_vector(struct virtio_pci_legacy_device *ldev,
		     u16 vector);
void vp_legacy_set_queue_address(struct virtio_pci_legacy_device *ldev,
			     u16 index, u32 queue_pfn);
bool vp_legacy_get_queue_enable(struct virtio_pci_legacy_device *ldev,
				u16 idx);
u16 vp_legacy_get_queue_size(struct virtio_pci_legacy_device *ldev,
			     u16 idx);
int vp_legacy_probe(struct virtio_pci_legacy_device *ldev);
void vp_legacy_remove(struct virtio_pci_legacy_device *ldev);

#endif

Annotation

• Immediate include surface: `linux/mod_devicetable.h`, `linux/pci.h`, `linux/virtio_pci.h`.
• Detected declarations: `struct virtio_pci_legacy_device`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.