uboot/arch/microblaze/include/asm/io.h
<<
>>
Prefs
   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * include/asm-microblaze/io.h -- Misc I/O operations
   4 *
   5 *  Copyright (C) 2003     John Williams <jwilliams@itee.uq.edu.au>
   6 *  Copyright (C) 2001,02  NEC Corporation
   7 *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
   8 *
   9 * This file is subject to the terms and conditions of the GNU General
  10 * Public License.  See the file COPYING in the main directory of this
  11 * archive for more details.
  12 *
  13 * Written by Miles Bader <miles@gnu.org>
  14 * Microblaze port by John Williams
  15 */
  16
  17#ifndef __MICROBLAZE_IO_H__
  18#define __MICROBLAZE_IO_H__
  19
  20#include <asm/types.h>
  21
  22#define IO_SPACE_LIMIT 0xFFFFFFFF
  23
  24#define readb(addr) \
  25        ({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; })
  26
  27#define readw(addr) \
  28        ({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; })
  29
  30#define readl(addr) \
  31        ({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; })
  32
  33#define writeb(b, addr) \
  34        (void)((*(volatile unsigned char *)(addr)) = (b))
  35
  36#define writew(b, addr) \
  37        (void)((*(volatile unsigned short *)(addr)) = (b))
  38
  39#define writel(b, addr) \
  40        (void)((*(volatile unsigned int *)(addr)) = (b))
  41
  42#define memset_io(a, b, c)        memset((void *)(a), (b), (c))
  43#define memcpy_fromio(a, b, c)    memcpy((a), (void *)(b), (c))
  44#define memcpy_toio(a, b, c)      memcpy((void *)(a), (b), (c))
  45
  46#define inb(addr)       readb(addr)
  47#define inw(addr)       readw(addr)
  48#define inl(addr)       readl(addr)
  49#define outb(x, addr)   ((void)writeb(x, addr))
  50#define outw(x, addr)   ((void)writew(x, addr))
  51#define outl(x, addr)   ((void)writel(x, addr))
  52
  53#define out_arch(type, endian, addr, x) \
  54                 __raw_write##type(cpu_to_##endian(x), addr)
  55#define in_arch(type, endian, addr)     \
  56                endian##_to_cpu(__raw_read##type(addr))
  57
  58#define out_le16(addr, x)       out_arch(w, le16, addr, x)
  59#define out_le32(addr, x)       out_arch(l, le32, addr, x)
  60
  61#define in_le16(addr)           in_arch(w, le16, addr)
  62#define in_le32(addr)           in_arch(l, le32, addr)
  63
  64#define in_8(addr)              readb(addr)
  65#define in_be16(addr)           in_arch(w, be16, addr)
  66#define in_be32(addr)           in_arch(l, be32, addr)
  67
  68#define out_8(addr, x)          outb(x, addr)
  69#define out_be16(addr, x)       out_arch(w, be16, addr, x)
  70#define out_be32(addr, x)       out_arch(l, be32, addr, x)
  71
  72#define inb_p(port)             inb((port))
  73#define outb_p(val, port)       outb((val), (port))
  74#define inw_p(port)             inw((port))
  75#define outw_p(val, port)       outw((val), (port))
  76#define inl_p(port)             inl((port))
  77#define outl_p(val, port)       outl((val), (port))
  78
  79/* Some defines to keep the MTD flash drivers happy */
  80
  81#define __raw_readb readb
  82#define __raw_readw readw
  83#define __raw_readl readl
  84#define __raw_writeb writeb
  85#define __raw_writew writew
  86#define __raw_writel writel
  87
  88static inline void io_insb(unsigned long port, void *dst, unsigned long count)
  89{
  90        unsigned char *p = dst;
  91
  92        while (count--)
  93                *p++ = inb(port);
  94}
  95
  96static inline void io_insw(unsigned long port, void *dst, unsigned long count)
  97{
  98        unsigned short *p = dst;
  99
 100        while (count--)
 101                *p++ = inw(port);
 102}
 103
 104static inline void io_insl(unsigned long port, void *dst, unsigned long count)
 105{
 106        unsigned long *p = dst;
 107
 108        while (count--)
 109                *p++ = inl(port);
 110}
 111
 112static inline void
 113io_outsb(unsigned long port, const void *src, unsigned long count)
 114{
 115        const unsigned char *p = src;
 116
 117        while (count--)
 118                outb(*p++, port);
 119}
 120
 121static inline void
 122io_outsw(unsigned long port, const void *src, unsigned long count)
 123{
 124        const unsigned short *p = src;
 125
 126        while (count--)
 127                outw(*p++, port);
 128}
 129
 130static inline void
 131io_outsl(unsigned long port, const void *src, unsigned long count)
 132{
 133        const unsigned long *p = src;
 134
 135        while (count--)
 136                outl(*p++, port);
 137}
 138
 139#define outsb(a, b, l) io_outsb(a, b, l)
 140#define outsw(a, b, l) io_outsw(a, b, l)
 141#define outsl(a, b, l) io_outsl(a, b, l)
 142
 143#define insb(a, b, l) io_insb(a, b, l)
 144#define insw(a, b, l) io_insw(a, b, l)
 145#define insl(a, b, l) io_insl(a, b, l)
 146
 147#define ioremap_nocache(physaddr, size)         (physaddr)
 148#define ioremap_writethrough(physaddr, size)    (physaddr)
 149#define ioremap_fullcache(physaddr, size)       (physaddr)
 150
 151static inline void sync(void)
 152{
 153}
 154
 155#include <asm-generic/io.h>
 156
 157#endif /* __MICROBLAZE_IO_H__ */
 158