From 9eb7115bcc423ae022ebf1844820d58a77c2d435 Mon Sep 17 00:00:00 2001 From: Hemant Pedanekar Date: Wed, 24 Jun 2009 10:15:47 +0530 Subject: davinci: Move IO device mapping macros from io.h to hardware.h This patch takes out IO mapping macros from mach/io.h and puts them in mach/hardware.h avoiding need to include mach/io.h in various files such as serial.h, vmalloc.h etc. The main reason to avoid inclusion of mach/io.h is, when default in/out macros are overridden by machine specific functions (e.g., in case of PCI I/O), they result into linker error. An example snippet and error snapshot is listed below. Following code in mach/io.h: #define inl(p) my_inl() static inline unsigned int my_inl(unsigned int addr) { if (IS_PCI_IO(addr)) return pci_inl (); else return le32_to_cpu(__raw_readl(__typesafe_io(addr))); } leads to error: LD arch/arm/boot/compressed/vmlinux arch/arm/boot/compressed/misc.o: In function `my_inl': misc.c:(.text+0x2744): undefined reference to `pci_inl' make[2]: *** [arch/arm/boot/compressed/vmlinux] Error 1 This is because mach/io.h gets included in arch/arm/boot/compressed/misc.c through mach/serial.h but pci.c file, which defines 'pci_inl' doesn't get built into compressed vmlinux. Signed-off-by: Hemant Pedanekar Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/include/mach/hardware.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'arch/arm/mach-davinci/include/mach/hardware.h') diff --git a/arch/arm/mach-davinci/include/mach/hardware.h b/arch/arm/mach-davinci/include/mach/hardware.h index 48c77934d519..41c89386e39b 100644 --- a/arch/arm/mach-davinci/include/mach/hardware.h +++ b/arch/arm/mach-davinci/include/mach/hardware.h @@ -24,4 +24,21 @@ /* System control register offsets */ #define DM64XX_VDD3P3V_PWDN 0x48 +/* + * I/O mapping + */ +#define IO_PHYS 0x01c00000 +#define IO_OFFSET 0xfd000000 /* Virtual IO = 0xfec00000 */ +#define IO_SIZE 0x00400000 +#define IO_VIRT (IO_PHYS + IO_OFFSET) +#define io_v2p(va) ((va) - IO_OFFSET) +#define __IO_ADDRESS(x) ((x) + IO_OFFSET) +#define IO_ADDRESS(pa) IOMEM(__IO_ADDRESS(pa)) + +#ifdef __ASSEMBLER__ +#define IOMEM(x) x +#else +#define IOMEM(x) ((void __force __iomem *)(x)) +#endif + #endif /* __ASM_ARCH_HARDWARE_H */ -- cgit v1.2.3