arch/sparc/lib/iomap.c

Source file repositories/reference/linux-study-clean/arch/sparc/lib/iomap.c

File Facts

System
Linux kernel
Corpus path
arch/sparc/lib/iomap.c
Extension
.c
Size
583 bytes
Lines
29
Domain
Architecture Layer
Bucket
arch/sparc
Inferred role
Architecture Layer: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Implement the sparc iomap interfaces
 */
#include <linux/pci.h>
#include <linux/module.h>
#include <asm/io.h>

/* Create a virtual mapping cookie for an IO port range */
void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
	return (void __iomem *) (unsigned long) port;
}

void ioport_unmap(void __iomem *addr)
{
	/* Nothing to do */
}
EXPORT_SYMBOL(ioport_map);
EXPORT_SYMBOL(ioport_unmap);

#ifdef CONFIG_PCI
void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
{
	/* nothing to do */
}
EXPORT_SYMBOL(pci_iounmap);
#endif

Annotation

Implementation Notes