iPXE
iomap_pages.h
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1 #ifndef _IPXE_IOMAP_PAGES_H
2 #define _IPXE_IOMAP_PAGES_H
3 
4 /** @file
5  *
6  * I/O mapping API using page tables
7  *
8  */
9 
10 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
11 
12 #ifdef IOMAP_PAGES
13 #define IOMAP_PREFIX_pages
14 #else
15 #define IOMAP_PREFIX_pages __pages_
16 #endif
17 
18 static inline __always_inline unsigned long
19 IOMAP_INLINE ( pages, io_to_bus ) ( volatile const void *io_addr ) {
20  /* Not easy to do; just return the CPU address for debugging purposes */
21  return ( ( intptr_t ) io_addr );
22 }
23 
24 #endif /* _IPXE_IOMAP_PAGES_H */
io_to_bus
unsigned long io_to_bus(volatile const void *io_addr)
Convert I/O address to bus address (for debug only)
intptr_t
unsigned long intptr_t
Definition: stdint.h:21
__always_inline
#define __always_inline
Declare a function to be always inline.
Definition: compiler.h:611
FILE_LICENCE
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
IOMAP_INLINE
static __always_inline unsigned long IOMAP_INLINE(pages, io_to_bus)(volatile const void *io_addr)
Definition: iomap_pages.h:19
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