x86: Use asm-generic/io.h

Convert the x86 architecture to make use of the new asm-generic/io.h to
provide address mapping functions. As the generic implementations are
suitable for x86 this is primarily a matter of moving code.

This has only been build-tested, feedback from architecture maintainers
is welcome.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Paul Burton 2017-09-14 15:05:08 -07:00 committed by Tom Rini
parent 505fe9cdd0
commit 6f01316f36

View file

@ -230,35 +230,6 @@ static inline void sync(void)
{
}
/*
* Given a physical address and a length, return a virtual address
* that can be used to access the memory range with the caching
* properties specified by "flags".
*/
#define MAP_NOCACHE (0)
#define MAP_WRCOMBINE (0)
#define MAP_WRBACK (0)
#define MAP_WRTHROUGH (0)
static inline void *
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
return (void *)(uintptr_t)paddr;
}
/*
* Take down a mapping set up by map_physmem().
*/
static inline void unmap_physmem(void *vaddr, unsigned long flags)
{
}
static inline phys_addr_t virt_to_phys(void * vaddr)
{
return (phys_addr_t)(uintptr_t)(vaddr);
}
/*
* TODO: The kernel offers some more advanced versions of barriers, it might
* have some advantages to use them instead of the simple one here.
@ -267,4 +238,6 @@ static inline phys_addr_t virt_to_phys(void * vaddr)
#define __iormb() dmb()
#define __iowmb() dmb()
#include <asm-generic/io.h>
#endif /* _ASM_IO_H */