include/asm-generic/pci_iomap.h
Source file repositories/reference/linux-study-clean/include/asm-generic/pci_iomap.h
File Facts
- System
- Linux kernel
- Corpus path
include/asm-generic/pci_iomap.h- Extension
.h- Size
- 2003 bytes
- Lines
- 61
- Domain
- Repository Root And Misc
- Bucket
- include
- Inferred role
- Repository Root And Misc: implementation source
- Status
- source implementation candidate
Why This File Exists
Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
- Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
struct pci_devfunction pci_iounmap
Annotated Snippet
#ifndef __ASM_GENERIC_PCI_IOMAP_H
#define __ASM_GENERIC_PCI_IOMAP_H
struct pci_dev;
#ifdef CONFIG_PCI
/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);
extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen);
extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen);
extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
/* Create a virtual mapping cookie for a port on a given PCI device.
* Do not call this directly, it exists to make it easier for architectures
* to override */
#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
unsigned int nr);
#elif !defined(CONFIG_HAS_IOPORT_MAP)
#define __pci_ioport_map(dev, port, nr) NULL
#else
#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
#endif
#elif defined(CONFIG_GENERIC_PCI_IOMAP)
static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
{
return NULL;
}
static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
{
return NULL;
}
static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen)
{
return NULL;
}
static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen)
{
return NULL;
}
static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
{ }
#endif
#endif /* __ASM_GENERIC_PCI_IOMAP_H */
Annotation
- Detected declarations: `struct pci_dev`, `function pci_iounmap`.
- Atlas domain: Repository Root And Misc / include.
- 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.