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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 */ |