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sh: Provide stubbed I/O routines for NO_IOPORT case. 

Too many drivers fail at IOPORT vs IOMEM checking before blindly calling
in to the API, so we may as well just provide basic stubs to get more
build coverage. Other platforms already do this, too (tile, parisc, etc.)

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2012-05-10 13:07:55 +09:00
parent 15f99cbd07
commit c5e50fa90c
2 changed files with 46 additions and 0 deletions
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5
arch/sh/include/asm/io.h
View File

@ -218,8 +218,13 @@ __BUILD_IOPORT_STRING(w, u16)
__BUILD_IOPORT_STRING(l, u32)
__BUILD_IOPORT_STRING(q, u64)
#else /* !CONFIG_HAS_IOPORT */
#include <asm/io_noioport.h>
#endif
#define IO_SPACE_LIMIT 0xffffffff
/* synco on SH-4A, otherwise a nop */

41
arch/sh/include/asm/io_noioport.h Normal file
View File

@ -0,0 +1,41 @@
#ifndef __ASM_SH_IO_NOIOPORT_H
#define __ASM_SH_IO_NOIOPORT_H
static inline u8 inb(unsigned long addr)
{
BUG();
return -1;
}
static inline u16 inw(unsigned long addr)
{
BUG();
return -1;
}
static inline u32 inl(unsigned long addr)
{
BUG();
return -1;
}
#define outb(x, y) BUG()
#define outw(x, y) BUG()
#define outl(x, y) BUG()
#define inb_p(addr) inb(addr)
#define inw_p(addr) inw(addr)
#define inl_p(addr) inl(addr)
#define outb_p(x, addr) outb((x), (addr))
#define outw_p(x, addr) outw((x), (addr))
#define outl_p(x, addr) outl((x), (addr))
#define insb(a, b, c) BUG()
#define insw(a, b, c) BUG()
#define insl(a, b, c) BUG()
#define outsb(a, b, c) BUG()
#define outsw(a, b, c) BUG()
#define outsl(a, b, c) BUG()
#endif /* __ASM_SH_IO_NOIOPORT_H */