Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/arch-l7200/io.h |
| 3 | * |
| 4 | * Copyright (C) 2000 Steve Hill (sjhill@cotw.com) |
| 5 | * |
| 6 | * Changelog: |
| 7 | * 03-21-2000 SJH Created from linux/include/asm-arm/arch-nexuspci/io.h |
| 8 | * 08-31-2000 SJH Added in IO functions necessary for new drivers |
| 9 | */ |
| 10 | #ifndef __ASM_ARM_ARCH_IO_H |
| 11 | #define __ASM_ARM_ARCH_IO_H |
| 12 | |
Russell King | 7fca0aa | 2005-10-28 10:20:25 +0100 | [diff] [blame] | 13 | #include <asm/hardware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | |
| 15 | #define IO_SPACE_LIMIT 0xffffffff |
| 16 | |
| 17 | /* |
| 18 | * There are not real ISA nor PCI buses, so we fake it. |
| 19 | */ |
| 20 | #define __io_pci(a) ((void __iomem *)(PCIO_BASE + (a))) |
| 21 | #define __mem_pci(a) (a) |
| 22 | #define __mem_isa(a) (a) |
| 23 | |
| 24 | #define __ioaddr(p) __io_pci(p) |
| 25 | |
| 26 | /* |
| 27 | * Generic virtual read/write |
| 28 | */ |
| 29 | #define __arch_getb(a) (*(volatile unsigned char *)(a)) |
| 30 | #define __arch_getl(a) (*(volatile unsigned int *)(a)) |
| 31 | |
| 32 | static inline unsigned int __arch_getw(unsigned long a) |
| 33 | { |
| 34 | unsigned int value; |
| 35 | __asm__ __volatile__("ldr%?h %0, [%1, #0] @ getw" |
| 36 | : "=&r" (value) |
| 37 | : "r" (a)); |
| 38 | return value; |
| 39 | } |
| 40 | |
| 41 | #define __arch_putb(v,a) (*(volatile unsigned char *)(a) = (v)) |
| 42 | #define __arch_putl(v,a) (*(volatile unsigned int *)(a) = (v)) |
| 43 | |
| 44 | static inline void __arch_putw(unsigned int value, unsigned long a) |
| 45 | { |
| 46 | __asm__ __volatile__("str%?h %0, [%1, #0] @ putw" |
| 47 | : : "r" (value), "r" (a)); |
| 48 | } |
| 49 | |
| 50 | /* |
| 51 | * Translated address IO functions |
| 52 | * |
| 53 | * IO address has already been translated to a virtual address |
| 54 | */ |
| 55 | #define outb_t(v,p) (*(volatile unsigned char *)(p) = (v)) |
| 56 | #define inb_t(p) (*(volatile unsigned char *)(p)) |
| 57 | #define outw_t(v,p) (*(volatile unsigned int *)(p) = (v)) |
| 58 | #define inw_t(p) (*(volatile unsigned int *)(p)) |
| 59 | #define outl_t(v,p) (*(volatile unsigned long *)(p) = (v)) |
| 60 | #define inl_t(p) (*(volatile unsigned long *)(p)) |
| 61 | |
| 62 | /* |
| 63 | * FIXME - These are to allow for linking. On all the other |
| 64 | * ARM platforms, the entire IO space is contiguous. |
| 65 | * The 7200 has three separate IO spaces. The below |
| 66 | * macros will eventually become more involved. Use |
| 67 | * with caution and don't be surprised by kernel oopses!!! |
| 68 | */ |
| 69 | #define inb(p) inb_t(p) |
| 70 | #define inw(p) inw_t(p) |
| 71 | #define inl(p) inl_t(p) |
| 72 | #define outb(v,p) outb_t(v,p) |
| 73 | #define outw(v,p) outw_t(v,p) |
| 74 | #define outl(v,p) outl_t(v,p) |
| 75 | |
| 76 | #endif |