include/linux/pci-ats.h

File Facts

System

Linux kernel

Corpus path

include/linux/pci-ats.h

Extension

.h

Size

2175 bytes

Lines

62

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/pci.h

Detected Declarations

• function pci_ats_supported
• function pci_enable_ats
• function pci_prepare_ats
• function pci_disable_ats
• function pci_ats_page_aligned
• function pci_ats_required
• function pci_pri_supported
• function pci_enable_pasid
• function pci_disable_pasid
• function pci_max_pasids
• function pci_pasid_status

Annotated Snippet

static inline void pci_disable_ats(struct pci_dev *d) { }
static inline int pci_ats_queue_depth(struct pci_dev *d)
{ return -ENODEV; }
static inline int pci_ats_page_aligned(struct pci_dev *dev)
{ return 0; }
static inline bool pci_ats_required(struct pci_dev *dev)
{ return false; }
#endif /* CONFIG_PCI_ATS */

#ifdef CONFIG_PCI_PRI
int pci_enable_pri(struct pci_dev *pdev, u32 reqs);
void pci_disable_pri(struct pci_dev *pdev);
int pci_reset_pri(struct pci_dev *pdev);
int pci_prg_resp_pasid_required(struct pci_dev *pdev);
bool pci_pri_supported(struct pci_dev *pdev);
#else
static inline bool pci_pri_supported(struct pci_dev *pdev)
{ return false; }
#endif /* CONFIG_PCI_PRI */

#ifdef CONFIG_PCI_PASID
int pci_enable_pasid(struct pci_dev *pdev, int features);
void pci_disable_pasid(struct pci_dev *pdev);
int pci_pasid_features(struct pci_dev *pdev);
int pci_max_pasids(struct pci_dev *pdev);
int pci_pasid_status(struct pci_dev *pdev);
#else /* CONFIG_PCI_PASID */
static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
{ return -EINVAL; }
static inline void pci_disable_pasid(struct pci_dev *pdev) { }
static inline int pci_pasid_features(struct pci_dev *pdev)
{ return -EINVAL; }
static inline int pci_max_pasids(struct pci_dev *pdev)
{ return -EINVAL; }
static inline int pci_pasid_status(struct pci_dev *pdev)
{ return -EINVAL; }
#endif /* CONFIG_PCI_PASID */

#endif /* LINUX_PCI_ATS_H */

Annotation

• Immediate include surface: `linux/pci.h`.
• Detected declarations: `function pci_ats_supported`, `function pci_enable_ats`, `function pci_prepare_ats`, `function pci_disable_ats`, `function pci_ats_page_aligned`, `function pci_ats_required`, `function pci_pri_supported`, `function pci_enable_pasid`, `function pci_disable_pasid`, `function pci_max_pasids`.
• 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.