| Message ID | 1467016351-22360-4-git-send-email-yamada.masahiro@socionext.com |
|---|---|
| State | New |
| Headers | show |
Hi Daniel, 2016-06-27 18:57 GMT+09:00 Daniel Schwierzeck <daniel.schwierzeck@gmail.com>: > > > Am 27.06.2016 um 10:32 schrieb Masahiro Yamada: >> For most of architectures in U-Boot, virtual address is straight >> mapped to physical address. So, it makes sense to have generic >> defines of ioremap and friends in <linux/io.h>. >> >> All of them are just empty and will disappear at compile time, but >> they will be helpful to implement drivers which are counterparts of >> Linux ones. >> >> I notice MIPS already has its own implementation, so I surrounded >> the defines with #ifndef CONFIG_MIPS ... #endif. I guess Sandbox >> will need its own implementation as well. >> > > how about introducing a Kconfig symbol like CONFIG_HAVE_ARCH_IOREMAP > which MIPS and Sandbox can select? Good idea! I will do so in v2. -- Best Regards Masahiro Yamada _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
diff --git a/include/linux/io.h b/include/linux/io.h index 1b36a22..ca23caa 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -5,6 +5,22 @@ #ifndef _LINUX_IO_H #define _LINUX_IO_H +#include <linux/compiler.h> +#include <linux/types.h> #include <asm/io.h> +#ifndef CONFIG_MIPS +static inline void __iomem *ioremap(resource_size_t offset, + resource_size_t size) +{ + return (void __iomem *)(unsigned long)offset; +} + +static inline void iounmap(void __iomem *addr) +{ +} + +#define devm_ioremap(dev, offset, size) ioremap(offset, size) +#endif + #endif /* _LINUX_IO_H */
For most of architectures in U-Boot, virtual address is straight mapped to physical address. So, it makes sense to have generic defines of ioremap and friends in <linux/io.h>. All of them are just empty and will disappear at compile time, but they will be helpful to implement drivers which are counterparts of Linux ones. I notice MIPS already has its own implementation, so I surrounded the defines with #ifndef CONFIG_MIPS ... #endif. I guess Sandbox will need its own implementation as well. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- include/linux/io.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) -- 1.9.1 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot