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asm-generic/io.h: move ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt out of ifndef CONFIG_MMU 

It allows some architectures to use this generic macro instead of
defining theirs.

sparc: io: To use the define of ioremap_[nocache|wc|wb] in asm-generic/io.h
It will move the ioremap_nocache out of the CONFIG_MMU ifdef. This means that
in order to suppress re-definition errors we need to remove the #define
in arch/sparc/include/asm/io_32.h. Also, the change adds a prototype for
ioremap where size is size_t and offset is phys_addr_t so fix that as well.

Signed-off-by: Greentime Hu <greentime@andestech.com>
This commit is contained in:
Greentime Hu 2017-11-22 18:57:46 +08:00
parent 94bc61ead4
commit b3ada9d0ce
3 changed files with 11 additions and 16 deletions
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5
arch/sparc/include/asm/io_32.h
View File

@ -127,12 +127,7 @@ static inline void sbus_memcpy_toio(volatile void __iomem *dst,
* Bus number may be embedded in the higher bits of the physical address.
* This is why we have no bus number argument to ioremap().
*/
void __iomem *ioremap(unsigned long offset, unsigned long size);
#define ioremap_nocache(X,Y) ioremap((X),(Y))
#define ioremap_wc(X,Y) ioremap((X),(Y))
#define ioremap_wt(X,Y) ioremap((X),(Y))
void iounmap(volatile void __iomem *addr);
/* Create a virtual mapping cookie for an IO port range */
void __iomem *ioport_map(unsigned long port, unsigned int nr);
void ioport_unmap(void __iomem *);

4
arch/sparc/kernel/ioport.c
View File

@ -122,12 +122,12 @@ static void xres_free(struct xresource *xrp) {
*
* Bus type is always zero on IIep.
*/
void __iomem *ioremap(unsigned long offset, unsigned long size)
void __iomem *ioremap(phys_addr_t offset, size_t size)
{
char name[14];
sprintf(name, "phys_%08x", (u32)offset);
return _sparc_alloc_io(0, offset, size, name);
return _sparc_alloc_io(0, (unsigned long)offset, size, name);
}
EXPORT_SYMBOL(ioremap);

18
include/asm-generic/io.h
View File

@ -852,7 +852,16 @@ static inline void __iomem *__ioremap(phys_addr_t offset, size_t size,
}
#endif
#ifndef iounmap
#define iounmap iounmap
static inline void iounmap(void __iomem *addr)
{
}
#endif
#endif /* CONFIG_MMU */
#ifndef ioremap_nocache
void __iomem *ioremap(phys_addr_t phys_addr, size_t size);
#define ioremap_nocache ioremap_nocache
static inline void __iomem *ioremap_nocache(phys_addr_t offset, size_t size)
{
@ -884,15 +893,6 @@ static inline void __iomem *ioremap_wt(phys_addr_t offset, size_t size)
}
#endif
#ifndef iounmap
#define iounmap iounmap
static inline void iounmap(void __iomem *addr)
{
}
#endif
#endif /* CONFIG_MMU */
#ifdef CONFIG_HAS_IOPORT_MAP
#ifndef CONFIG_GENERIC_IOMAP
#ifndef ioport_map