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.

Dependency Surface

Detected Declarations

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

Implementation Notes