projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| a09e64fb | 1 | /* arch/arm/mach-lh7a40x/include/mach/hardware.h |
| 1da177e4 LT |
2 | * |
| 3 | * Copyright (C) 2004 Coastal Environmental Systems | |
| 4 | * | |
| a09e64fb | 5 | * [ Substantially cribbed from arch/arm/mach-pxa/include/mach/hardware.h ] |
| 1da177e4 LT |
6 | * |
| 7 | * This program is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * version 2 as published by the Free Software Foundation. | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| 13 | #ifndef __ASM_ARCH_HARDWARE_H | |
| 14 | #define __ASM_ARCH_HARDWARE_H | |
| 15 | ||
| 2295196c MS |
16 | #include <asm/sizes.h> /* Added for the sake of amba-clcd driver */ |
| 17 | ||
| 1da177e4 LT |
18 | #define io_p2v(x) (0xf0000000 | (((x) & 0xfff00000) >> 4) | ((x) & 0x0000ffff)) |
| 19 | #define io_v2p(x) ( (((x) & 0x0fff0000) << 4) | ((x) & 0x0000ffff)) | |
| 20 | ||
| 21 | #ifdef __ASSEMBLY__ | |
| 22 | ||
| 23 | # define __REG(x) io_p2v(x) | |
| 24 | # define __PREG(x) io_v2p(x) | |
| 25 | ||
| 26 | #else | |
| 27 | ||
| 28 | # if 0 | |
| 29 | # define __REG(x) (*((volatile u32 *)io_p2v(x))) | |
| 30 | # else | |
| 31 | /* | |
| 32 | * This __REG() version gives the same results as the one above, except | |
| 33 | * that we are fooling gcc somehow so it generates far better and smaller | |
| af901ca1 | 34 | * assembly code for access to contiguous registers. It's a shame that gcc |
| 1da177e4 LT |
35 | * doesn't guess this by itself. |
| 36 | */ | |
| 37 | #include <asm/types.h> | |
| 38 | typedef struct { volatile u32 offset[4096]; } __regbase; | |
| 39 | # define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2] | |
| 40 | # define __REG(x) __REGP(io_p2v(x)) | |
| 41 | typedef struct { volatile u16 offset[4096]; } __regbase16; | |
| 42 | # define __REGP16(x) ((__regbase16 *)((x)&~4095))->offset[((x)&4095)>>1] | |
| 43 | # define __REG16(x) __REGP16(io_p2v(x)) | |
| 44 | typedef struct { volatile u8 offset[4096]; } __regbase8; | |
| 45 | # define __REGP8(x) ((__regbase8 *)((x)&~4095))->offset[(x)&4095] | |
| 46 | # define __REG8(x) __REGP8(io_p2v(x)) | |
| 47 | #endif | |
| 48 | ||
| 49 | /* Let's kick gcc's ass again... */ | |
| 50 | # define __REG2(x,y) \ | |
| 51 | ( __builtin_constant_p(y) ? (__REG((x) + (y))) \ | |
| 52 | : (*(volatile u32 *)((u32)&__REG(x) + (y))) ) | |
| 53 | ||
| 54 | # define __PREG(x) (io_v2p((u32)&(x))) | |
| 55 | ||
| 56 | #endif | |
| 57 | ||
| 2295196c MS |
58 | #define MASK_AND_SET(v,m,s) (v) = ((v)&~(m))|(s) |
| 59 | ||
| 1da177e4 LT |
60 | #include "registers.h" |
| 61 | ||
| 62 | #endif /* _ASM_ARCH_HARDWARE_H */ |