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Diffstat (limited to 'include/asm-arm/arch-sa1100/hardware.h')
-rw-r--r-- | include/asm-arm/arch-sa1100/hardware.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/include/asm-arm/arch-sa1100/hardware.h b/include/asm-arm/arch-sa1100/hardware.h new file mode 100644 index 00000000000..10c62db3436 --- /dev/null +++ b/include/asm-arm/arch-sa1100/hardware.h @@ -0,0 +1,83 @@ +/* + * linux/include/asm-arm/arch-sa1100/hardware.h + * + * Copyright (C) 1998 Nicolas Pitre <nico@cam.org> + * + * This file contains the hardware definitions for SA1100 architecture + * + * 2000/05/23 John Dorsey <john+@cs.cmu.edu> + * Definitions for SA1111 added. + */ + +#ifndef __ASM_ARCH_HARDWARE_H +#define __ASM_ARCH_HARDWARE_H + +#include <linux/config.h> + +/* Flushing areas */ +#define FLUSH_BASE_PHYS 0xe0000000 /* SA1100 zero bank */ +#define FLUSH_BASE 0xf5000000 +#define FLUSH_BASE_MINICACHE 0xf5800000 +#define UNCACHEABLE_ADDR 0xfa050000 + + +/* + * We requires absolute addresses i.e. (PCMCIA_IO_0_BASE + 0x3f8) for + * in*()/out*() macros to be usable for all cases. + */ +#define PCIO_BASE 0 + + +/* + * SA1100 internal I/O mappings + * + * We have the following mapping: + * phys virt + * 80000000 f8000000 + * 90000000 fa000000 + * a0000000 fc000000 + * b0000000 fe000000 + */ + +#define VIO_BASE 0xf8000000 /* virtual start of IO space */ +#define VIO_SHIFT 3 /* x = IO space shrink power */ +#define PIO_START 0x80000000 /* physical start of IO space */ + +#define io_p2v( x ) \ + ( (((x)&0x00ffffff) | (((x)&0x30000000)>>VIO_SHIFT)) + VIO_BASE ) +#define io_v2p( x ) \ + ( (((x)&0x00ffffff) | (((x)&(0x30000000>>VIO_SHIFT))<<VIO_SHIFT)) + PIO_START ) + +#ifndef __ASSEMBLY__ +#include <asm/types.h> + +#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. + */ +typedef struct { volatile u32 offset[4096]; } __regbase; +# define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2] +# define __REG(x) __REGP(io_p2v(x)) +#endif + +# define __PREG(x) (io_v2p((u32)&(x))) + +#else + +# define __REG(x) io_p2v(x) +# define __PREG(x) io_v2p(x) + +#endif + +#include "SA-1100.h" + +#ifdef CONFIG_SA1101 +#include "SA-1101.h" +#endif + +#endif /* _ASM_ARCH_HARDWARE_H */ |