include/uapi/linux/vfio_zdev.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/vfio_zdev.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/vfio_zdev.h
Extension
.h
Size
2542 bytes
Lines
86
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct vfio_device_info_cap_zpci_base {
	struct vfio_info_cap_header header;
	__u64 start_dma;	/* Start of available DMA addresses */
	__u64 end_dma;		/* End of available DMA addresses */
	__u16 pchid;		/* Physical Channel ID */
	__u16 vfn;		/* Virtual function number */
	__u16 fmb_length;	/* Measurement Block Length (in bytes) */
	__u8 pft;		/* PCI Function Type */
	__u8 gid;		/* PCI function group ID */
	/* End of version 1 */
	__u32 fh;		/* PCI function handle */
	/* End of version 2 */
};

/**
 * VFIO_DEVICE_INFO_CAP_ZPCI_GROUP - Base PCI Function Group information
 *
 * This capability provides a set of descriptive information about the group of
 * PCI functions that the associated device belongs to.
 */
struct vfio_device_info_cap_zpci_group {
	struct vfio_info_cap_header header;
	__u64 dasm;		/* DMA Address space mask */
	__u64 msi_addr;		/* MSI address */
	__u64 flags;
#define VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH 1 /* Program-specified TLB refresh */
	__u16 mui;		/* Measurement Block Update Interval */
	__u16 noi;		/* Maximum number of MSIs */
	__u16 maxstbl;		/* Maximum Store Block Length */
	__u8 version;		/* Supported PCI Version */
	/* End of version 1 */
	__u8 reserved;
	__u16 imaxstbl;		/* Maximum Interpreted Store Block Length */
	/* End of version 2 */
};

/**
 * VFIO_DEVICE_INFO_CAP_ZPCI_UTIL - Utility String
 *
 * This capability provides the utility string for the associated device, which
 * is a device identifier string made up of EBCDID characters.  'size' specifies
 * the length of 'util_str'.
 */
struct vfio_device_info_cap_zpci_util {
	struct vfio_info_cap_header header;
	__u32 size;
	__u8 util_str[];
};

/**
 * VFIO_DEVICE_INFO_CAP_ZPCI_PFIP - PCI Function Path
 *
 * This capability provides the PCI function path string, which is an identifier
 * that describes the internal hardware path of the device. 'size' specifies
 * the length of 'pfip'.
 */
struct vfio_device_info_cap_zpci_pfip {
	struct vfio_info_cap_header header;
	__u32 size;
	__u8 pfip[];
};

#endif

Annotation

Implementation Notes