diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
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committer | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
commit | af7a535688a758d15f06a98833e6a143b29af9de (patch) | |
tree | bac5ab210bbbbe276f0e44ed84194d7c8bb16aae /arch/arm/mach-lh7a40x/include/mach/hardware.h | |
parent | 0c17e4ceedd35c78b1c7413dbd16279a350be6bc (diff) | |
parent | c41107c2d4fd31924533f4dbc4c3428acc2b5894 (diff) |
Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk
Diffstat (limited to 'arch/arm/mach-lh7a40x/include/mach/hardware.h')
-rw-r--r-- | arch/arm/mach-lh7a40x/include/mach/hardware.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/mach-lh7a40x/include/mach/hardware.h b/arch/arm/mach-lh7a40x/include/mach/hardware.h new file mode 100644 index 00000000000..48e827d2fa5 --- /dev/null +++ b/arch/arm/mach-lh7a40x/include/mach/hardware.h @@ -0,0 +1,62 @@ +/* arch/arm/mach-lh7a40x/include/mach/hardware.h + * + * Copyright (C) 2004 Coastal Environmental Systems + * + * [ Substantially cribbed from arch/arm/mach-pxa/include/mach/hardware.h ] + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + */ + +#ifndef __ASM_ARCH_HARDWARE_H +#define __ASM_ARCH_HARDWARE_H + +#include <asm/sizes.h> /* Added for the sake of amba-clcd driver */ + +#define io_p2v(x) (0xf0000000 | (((x) & 0xfff00000) >> 4) | ((x) & 0x0000ffff)) +#define io_v2p(x) ( (((x) & 0x0fff0000) << 4) | ((x) & 0x0000ffff)) + +#ifdef __ASSEMBLY__ + +# define __REG(x) io_p2v(x) +# define __PREG(x) io_v2p(x) + +#else + +# if 0 +# define __REG(x) (*((volatile u32 *)io_p2v(x))) +# else +/* + * This __REG() version gives the same results as the one above, except + * that we are fooling gcc somehow so it generates far better and smaller + * assembly code for access to contigous registers. It's a shame that gcc + * doesn't guess this by itself. + */ +#include <asm/types.h> +typedef struct { volatile u32 offset[4096]; } __regbase; +# define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2] +# define __REG(x) __REGP(io_p2v(x)) +typedef struct { volatile u16 offset[4096]; } __regbase16; +# define __REGP16(x) ((__regbase16 *)((x)&~4095))->offset[((x)&4095)>>1] +# define __REG16(x) __REGP16(io_p2v(x)) +typedef struct { volatile u8 offset[4096]; } __regbase8; +# define __REGP8(x) ((__regbase8 *)((x)&~4095))->offset[(x)&4095] +# define __REG8(x) __REGP8(io_p2v(x)) +#endif + +/* Let's kick gcc's ass again... */ +# define __REG2(x,y) \ + ( __builtin_constant_p(y) ? (__REG((x) + (y))) \ + : (*(volatile u32 *)((u32)&__REG(x) + (y))) ) + +# define __PREG(x) (io_v2p((u32)&(x))) + +#endif + +#define MASK_AND_SET(v,m,s) (v) = ((v)&~(m))|(s) + +#include "registers.h" + +#endif /* _ASM_ARCH_HARDWARE_H */ |