diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2011-11-02 02:46:10 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-11-02 02:46:10 +0100 |
| commit | 884897e6a10a86de0e611a76f4bf3fd0068a672c (patch) | |
| tree | 019689fb9d129404af1efba4df10975bc9e0a57a /arch/arm/include/asm/io.h | |
| parent | c72dbae971400e466ad9ff16c920cd6d9d8c55a1 (diff) | |
| parent | 8b61f37440388ebbd2a894178fe098f2e70ab392 (diff) | |
Merge branch 'highbank/soc' into next/soc
Conflicts:
arch/arm/mach-mxs/include/mach/gpio.h
arch/arm/mach-omap2/board-generic.c
arch/arm/plat-mxc/include/mach/gpio.h
Diffstat (limited to 'arch/arm/include/asm/io.h')
| -rw-r--r-- | arch/arm/include/asm/io.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index d66605dea55..ffb089d46a1 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -110,6 +110,27 @@ static inline void __iomem *__typesafe_io(unsigned long addr) #include <mach/io.h> /* + * This is the limit of PC card/PCI/ISA IO space, which is by default + * 64K if we have PC card, PCI or ISA support. Otherwise, default to + * zero to prevent ISA/PCI drivers claiming IO space (and potentially + * oopsing.) + * + * Only set this larger if you really need inb() et.al. to operate over + * a larger address space. Note that SOC_COMMON ioremaps each sockets + * IO space area, and so inb() et.al. must be defined to operate as per + * readb() et.al. on such platforms. + */ +#ifndef IO_SPACE_LIMIT +#if defined(CONFIG_PCMCIA_SOC_COMMON) || defined(CONFIG_PCMCIA_SOC_COMMON_MODULE) +#define IO_SPACE_LIMIT ((resource_size_t)0xffffffff) +#elif defined(CONFIG_PCI) || defined(CONFIG_ISA) || defined(CONFIG_PCCARD) +#define IO_SPACE_LIMIT ((resource_size_t)0xffff) +#else +#define IO_SPACE_LIMIT ((resource_size_t)0) +#endif +#endif + +/* * IO port access primitives * ------------------------- * |