diff options
Diffstat (limited to 'arch/microblaze/include/asm/io.h')
| -rw-r--r-- | arch/microblaze/include/asm/io.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h new file mode 100644 index 0000000..7e190d1 --- /dev/null +++ b/arch/microblaze/include/asm/io.h @@ -0,0 +1,163 @@ +/* + * 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__ + +#include <asm/types.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) +{ + +} + +static inline phys_addr_t virt_to_phys(void * vaddr) +{ + return (phys_addr_t)(vaddr); +} + +#endif /* __MICROBLAZE_IO_H__ */ |