iomap_virt.h

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#ifndef _IPXE_IOMAP_VIRT_H
#define _IPXE_IOMAP_VIRT_H
 
/** @file
 *
 * iPXE I/O mapping API using phys_to_virt()
 *
 */
 
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );
 
#include <stddef.h>
#include <ipxe/uaccess.h>
 
#ifdef IOMAP_VIRT
#define IOMAP_PREFIX_virt
#else
#define IOMAP_PREFIX_virt __virt_
#endif
 
static inline __always_inline void *
IOMAP_INLINE ( virt, ioremap ) ( unsigned long bus_addr, size_t len __unused ) {
        return ( bus_addr ? phys_to_virt ( bus_addr ) : NULL );
}
 
static inline __always_inline void
IOMAP_INLINE ( virt, iounmap ) ( volatile const void *io_addr __unused ) {
        /* Nothing to do */
}
 
static inline __always_inline unsigned long
IOMAP_INLINE ( virt, io_to_bus ) ( volatile const void *io_addr ) {
        return virt_to_phys ( io_addr );
}
 
#endif /* _IPXE_IOMAP_VIRT_H */