/* * include/asm-microblaze/io.h -- Misc I/O operations * * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> * Copyright (C) 2001,02 NEC Corporation * Copyright (C) 2001,02 Miles Bader <miles@gnu.org> * * This file is subject to the terms and conditions of the GNU General * Public License. See the file COPYING in the main directory of this * archive for more details. * * Written by Miles Bader <miles@gnu.org> * Microblaze port by John Williams */ #ifndef __MICROBLAZE_IO_H__ #define __MICROBLAZE_IO_H__ #define IO_SPACE_LIMIT 0xFFFFFFFF #define readb(addr) \ ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; }) #define readw(addr) \ ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; }) #define readl(addr) \ ({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; }) #define writeb(b, addr) \ (void)((*(volatile unsigned char *) (addr)) = (b)) #define writew(b, addr) \ (void)((*(volatile unsigned short *) (addr)) = (b)) #define writel(b, addr) \ (void)((*(volatile unsigned int *) (addr)) = (b)) #define memset_io(a,b,c) memset((void *)(a),(b),(c)) #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) #define inb(addr) readb (addr) #define inw(addr) readw (addr) #define inl(addr) readl (addr) #define outb(x, addr) ((void) writeb (x, addr)) #define outw(x, addr) ((void) writew (x, addr)) #define outl(x, addr) ((void) writel (x, addr)) /* Some #definitions to keep strange Xilinx code happy */ #define in_8(addr) readb (addr) #define in_be16(addr) readw (addr) #define in_be32(addr) readl (addr) #define out_8(addr,x ) outb (x,addr) #define out_be16(addr,x ) outw (x,addr) #define out_be32(addr,x ) outl (x,addr) #define inb_p(port) inb((port)) #define outb_p(val, port) outb((val), (port)) #define inw_p(port) inw((port)) #define outw_p(val, port) outw((val), (port)) #define inl_p(port) inl((port)) #define outl_p(val, port) outl((val), (port)) /* Some defines to keep the MTD flash drivers happy */ #define __raw_readb readb #define __raw_readw readw #define __raw_readl readl #define __raw_writeb writeb #define __raw_writew writew #define __raw_writel writel static inline void io_insb (unsigned long port, void *dst, unsigned long count) { unsigned char *p = dst; while (count--) *p++ = inb (port); } static inline void io_insw (unsigned long port, void *dst, unsigned long count) { unsigned short *p = dst; while (count--) *p++ = inw (port); } static inline void io_insl (unsigned long port, void *dst, unsigned long count) { unsigned long *p = dst; while (count--) *p++ = inl (port); } static inline void io_outsb (unsigned long port, const void *src, unsigned long count) { const unsigned char *p = src; while (count--) outb (*p++, port); } static inline void io_outsw (unsigned long port, const void *src, unsigned long count) { const unsigned short *p = src; while (count--) outw (*p++, port); } static inline void io_outsl (unsigned long port, const void *src, unsigned long count) { const unsigned long *p = src; while (count--) outl (*p++, port); } #define outsb(a,b,l) io_outsb(a,b,l) #define outsw(a,b,l) io_outsw(a,b,l) #define outsl(a,b,l) io_outsl(a,b,l) #define insb(a,b,l) io_insb(a,b,l) #define insw(a,b,l) io_insw(a,b,l) #define insl(a,b,l) io_insl(a,b,l) #define iounmap(addr) ((void)0) #define ioremap(physaddr, size) (physaddr) #define ioremap_nocache(physaddr, size) (physaddr) #define ioremap_writethrough(physaddr, size) (physaddr) #define ioremap_fullcache(physaddr, size) (physaddr) static inline void sync(void) { } /* * Given a physical address and a length, return a virtual address * that can be used to access the memory range with the caching * properties specified by "flags". */ #define MAP_NOCACHE (0) #define MAP_WRCOMBINE (0) #define MAP_WRBACK (0) #define MAP_WRTHROUGH (0) static inline void * map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) { return (void *)paddr; } /* * Take down a mapping set up by map_physmem(). */ static inline void unmap_physmem(void *vaddr, unsigned long flags) { } #endif /* __MICROBLAZE_IO_H__ */