1/* 2 * include/asm-v850/io.h -- Misc I/O operations 3 * 4 * Copyright (C) 2001,02,03,04,05 NEC Electronics Corporation 5 * Copyright (C) 2001,02,03,04,05 Miles Bader <miles@gnu.org> 6 * 7 * This file is subject to the terms and conditions of the GNU General 8 * Public License. See the file COPYING in the main directory of this 9 * archive for more details. 10 * 11 * Written by Miles Bader <miles@gnu.org> 12 */ 13 14#ifndef __V850_IO_H__ 15#define __V850_IO_H__ 16 17#define IO_SPACE_LIMIT 0xFFFFFFFF 18 19#define readb(addr) \ 20 ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; }) 21#define readw(addr) \ 22 ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; }) 23#define readl(addr) \ 24 ({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; }) 25 26#define readb_relaxed(a) readb(a) 27#define readw_relaxed(a) readw(a) 28#define readl_relaxed(a) readl(a) 29 30#define writeb(val, addr) \ 31 (void)((*(volatile unsigned char *) (addr)) = (val)) 32#define writew(val, addr) \ 33 (void)((*(volatile unsigned short *) (addr)) = (val)) 34#define writel(val, addr) \ 35 (void)((*(volatile unsigned int *) (addr)) = (val)) 36 37#define __raw_readb readb 38#define __raw_readw readw 39#define __raw_readl readl 40#define __raw_writeb writeb 41#define __raw_writew writew 42#define __raw_writel writel 43 44#define inb(addr) readb (addr) 45#define inw(addr) readw (addr) 46#define inl(addr) readl (addr) 47#define outb(x, addr) ((void) writeb (x, addr)) 48#define outw(x, addr) ((void) writew (x, addr)) 49#define outl(x, addr) ((void) writel (x, addr)) 50 51#define inb_p(port) inb((port)) 52#define outb_p(val, port) outb((val), (port)) 53#define inw_p(port) inw((port)) 54#define outw_p(val, port) outw((val), (port)) 55#define inl_p(port) inl((port)) 56#define outl_p(val, port) outl((val), (port)) 57 58static inline void insb (unsigned long port, void *dst, unsigned long count) 59{ 60 unsigned char *p = dst; 61 while (count--) 62 *p++ = inb (port); 63} 64static inline void insw (unsigned long port, void *dst, unsigned long count) 65{ 66 unsigned short *p = dst; 67 while (count--) 68 *p++ = inw (port); 69} 70static inline void insl (unsigned long port, void *dst, unsigned long count) 71{ 72 unsigned long *p = dst; 73 while (count--) 74 *p++ = inl (port); 75} 76 77static inline void 78outsb (unsigned long port, const void *src, unsigned long count) 79{ 80 const unsigned char *p = src; 81 while (count--) 82 outb (*p++, port); 83} 84static inline void 85outsw (unsigned long port, const void *src, unsigned long count) 86{ 87 const unsigned short *p = src; 88 while (count--) 89 outw (*p++, port); 90} 91static inline void 92outsl (unsigned long port, const void *src, unsigned long count) 93{ 94 const unsigned long *p = src; 95 while (count--) 96 outl (*p++, port); 97} 98 99 100/* Some places try to pass in an loff_t for PHYSADDR (?!), so we cast it to 101 long before casting it to a pointer to avoid compiler warnings. */ 102#define ioremap(physaddr, size) ((void __iomem *)(unsigned long)(physaddr)) 103#define iounmap(addr) ((void)0) 104 105#define ioremap_nocache(physaddr, size) ioremap (physaddr, size) 106#define ioremap_writethrough(physaddr, size) ioremap (physaddr, size) 107#define ioremap_fullcache(physaddr, size) ioremap (physaddr, size) 108 109#define ioread8(addr) readb (addr) 110#define ioread16(addr) readw (addr) 111#define ioread32(addr) readl (addr) 112#define iowrite8(val, addr) writeb (val, addr) 113#define iowrite16(val, addr) writew (val, addr) 114#define iowrite32(val, addr) writel (val, addr) 115 116#define mmiowb() 117 118#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT) 119 120/* Conversion between virtual and physical mappings. */ 121#define mm_ptov(addr) ((void *)__phys_to_virt (addr)) 122#define mm_vtop(addr) ((unsigned long)__virt_to_phys (addr)) 123#define phys_to_virt(addr) ((void *)__phys_to_virt (addr)) 124#define virt_to_phys(addr) ((unsigned long)__virt_to_phys (addr)) 125 126#define memcpy_fromio(dst, src, len) memcpy (dst, (void *)src, len) 127#define memcpy_toio(dst, src, len) memcpy ((void *)dst, src, len) 128 129/* 130 * Convert a physical pointer to a virtual kernel pointer for /dev/mem 131 * access 132 */ 133#define xlate_dev_mem_ptr(p) __va(p) 134 135/* 136 * Convert a virtual cached pointer to an uncached pointer 137 */ 138#define xlate_dev_kmem_ptr(p) p 139 140#endif /* __V850_IO_H__ */ 141