diff options
Diffstat (limited to 'include/asm-arm/arch-pxa/hardware.h')
-rw-r--r-- | include/asm-arm/arch-pxa/hardware.h | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/include/asm-arm/arch-pxa/hardware.h b/include/asm-arm/arch-pxa/hardware.h index 72b04d846a23..cf35721cfa45 100644 --- a/include/asm-arm/arch-pxa/hardware.h +++ b/include/asm-arm/arch-pxa/hardware.h | |||
@@ -44,24 +44,12 @@ | |||
44 | 44 | ||
45 | #ifndef __ASSEMBLY__ | 45 | #ifndef __ASSEMBLY__ |
46 | 46 | ||
47 | #if 0 | 47 | # define __REG(x) (*((volatile unsigned long *)io_p2v(x))) |
48 | # define __REG(x) (*((volatile u32 *)io_p2v(x))) | ||
49 | #else | ||
50 | /* | ||
51 | * This __REG() version gives the same results as the one above, except | ||
52 | * that we are fooling gcc somehow so it generates far better and smaller | ||
53 | * assembly code for access to contigous registers. It's a shame that gcc | ||
54 | * doesn't guess this by itself. | ||
55 | */ | ||
56 | #include <asm/types.h> | ||
57 | typedef struct { volatile u32 offset[4096]; } __regbase; | ||
58 | # define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2] | ||
59 | # define __REG(x) __REGP(io_p2v(x)) | ||
60 | #endif | ||
61 | 48 | ||
62 | /* With indexed regs we don't want to feed the index through io_p2v() | 49 | /* With indexed regs we don't want to feed the index through io_p2v() |
63 | especially if it is a variable, otherwise horrible code will result. */ | 50 | especially if it is a variable, otherwise horrible code will result. */ |
64 | # define __REG2(x,y) (*(volatile u32 *)((u32)&__REG(x) + (y))) | 51 | # define __REG2(x,y) \ |
52 | (*(volatile unsigned long *)((unsigned long)&__REG(x) + (y))) | ||
65 | 53 | ||
66 | # define __PREG(x) (io_v2p((u32)&(x))) | 54 | # define __PREG(x) (io_v2p((u32)&(x))) |
67 | 55 | ||