1 /* 2 * include/asm-microblaze/io.h -- Misc I/O operations 3 * 4 * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> 5 * Copyright (C) 2001,02 NEC Corporation 6 * Copyright (C) 2001,02 Miles Bader <miles@gnu.org> 7 * 8 * This file is subject to the terms and conditions of the GNU General 9 * Public License. See the file COPYING in the main directory of this 10 * archive for more details. 11 * 12 * Written by Miles Bader <miles@gnu.org> 13 * Microblaze port by John Williams 14 */ 15 16 #ifndef __MICROBLAZE_IO_H__ 17 #define __MICROBLAZE_IO_H__ 18 19 #include <asm/types.h> 20 21 #define IO_SPACE_LIMIT 0xFFFFFFFF 22 23 #define readb(addr) \ 24 ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; }) 25 #define readw(addr) \ 26 ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; }) 27 #define readl(addr) \ 28 ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; }) 29 30 #define writeb(b, addr) \ 31 (void)((*(volatile unsigned char *) (addr)) = (b)) 32 #define writew(b, addr) \ 33 (void)((*(volatile unsigned short *) (addr)) = (b)) 34 #define writel(b, addr) \ 35 (void)((*(volatile unsigned int *) (addr)) = (b)) 36 37 #define memset_io(a,b,c) memset((void *)(a),(b),(c)) 38 #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) 39 #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) 40 41 #define inb(addr) readb (addr) 42 #define inw(addr) readw (addr) 43 #define inl(addr) readl (addr) 44 #define outb(x, addr) ((void) writeb (x, addr)) 45 #define outw(x, addr) ((void) writew (x, addr)) 46 #define outl(x, addr) ((void) writel (x, addr)) 47 48 /* Some #definitions to keep strange Xilinx code happy */ 49 #define in_8(addr) readb (addr) 50 #define in_be16(addr) readw (addr) 51 #define in_be32(addr) readl (addr) 52 53 #define out_8(addr,x ) outb (x,addr) 54 #define out_be16(addr,x ) outw (x,addr) 55 #define out_be32(addr,x ) outl (x,addr) 56 57 58 #define inb_p(port) inb((port)) 59 #define outb_p(val, port) outb((val), (port)) 60 #define inw_p(port) inw((port)) 61 #define outw_p(val, port) outw((val), (port)) 62 #define inl_p(port) inl((port)) 63 #define outl_p(val, port) outl((val), (port)) 64 65 /* Some defines to keep the MTD flash drivers happy */ 66 67 #define __raw_readb readb 68 #define __raw_readw readw 69 #define __raw_readl readl 70 #define __raw_writeb writeb 71 #define __raw_writew writew 72 #define __raw_writel writel 73 74 static inline void io_insb (unsigned long port, void *dst, unsigned long count) 75 { 76 unsigned char *p = dst; 77 while (count--) 78 *p++ = inb (port); 79 } 80 static inline void io_insw (unsigned long port, void *dst, unsigned long count) 81 { 82 unsigned short *p = dst; 83 while (count--) 84 *p++ = inw (port); 85 } 86 static inline void io_insl (unsigned long port, void *dst, unsigned long count) 87 { 88 unsigned long *p = dst; 89 while (count--) 90 *p++ = inl (port); 91 } 92 93 static inline void 94 io_outsb (unsigned long port, const void *src, unsigned long count) 95 { 96 const unsigned char *p = src; 97 while (count--) 98 outb (*p++, port); 99 } 100 static inline void 101 io_outsw (unsigned long port, const void *src, unsigned long count) 102 { 103 const unsigned short *p = src; 104 while (count--) 105 outw (*p++, port); 106 } 107 static inline void 108 io_outsl (unsigned long port, const void *src, unsigned long count) 109 { 110 const unsigned long *p = src; 111 while (count--) 112 outl (*p++, port); 113 } 114 115 #define outsb(a,b,l) io_outsb(a,b,l) 116 #define outsw(a,b,l) io_outsw(a,b,l) 117 #define outsl(a,b,l) io_outsl(a,b,l) 118 119 #define insb(a,b,l) io_insb(a,b,l) 120 #define insw(a,b,l) io_insw(a,b,l) 121 #define insl(a,b,l) io_insl(a,b,l) 122 123 124 #define iounmap(addr) ((void)0) 125 #define ioremap(physaddr, size) (physaddr) 126 #define ioremap_nocache(physaddr, size) (physaddr) 127 #define ioremap_writethrough(physaddr, size) (physaddr) 128 #define ioremap_fullcache(physaddr, size) (physaddr) 129 130 static inline void sync(void) 131 { 132 } 133 134 /* 135 * Given a physical address and a length, return a virtual address 136 * that can be used to access the memory range with the caching 137 * properties specified by "flags". 138 */ 139 #define MAP_NOCACHE (0) 140 #define MAP_WRCOMBINE (0) 141 #define MAP_WRBACK (0) 142 #define MAP_WRTHROUGH (0) 143 144 static inline void * 145 map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) 146 { 147 return (void *)paddr; 148 } 149 150 /* 151 * Take down a mapping set up by map_physmem(). 152 */ 153 static inline void unmap_physmem(void *vaddr, unsigned long flags) 154 { 155 156 } 157 158 static inline phys_addr_t virt_to_phys(void * vaddr) 159 { 160 return (phys_addr_t)(vaddr); 161 } 162 163 #endif /* __MICROBLAZE_IO_H__ */ 164