text: /* SPDX-License-Identifier: GPL-2.0+ */
  /*
   * IO header file
   *
   * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
   * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   */
  
  #ifndef __ASM_M68K_IO_H__
  #define __ASM_M68K_IO_H__
  
  #include <asm/byteorder.h>
  
  #ifndef _IO_BASE
  #define _IO_BASE 0
  #endif
  
  #define __raw_readb(addr) (*(volatile u8 *)(addr))
  #define __raw_readw(addr) (*(volatile u16 *)(addr))
  #define __raw_readl(addr) (*(volatile u32 *)(addr))
  
  #define __raw_writeb(b,addr) ((*(volatile u8 *) (addr)) = (b))
  #define __raw_writew(w,addr) ((*(volatile u16 *) (addr)) = (w))
  #define __raw_writel(l,addr) ((*(volatile u32 *) (addr)) = (l))
  
  #define readb(addr)		in_8((volatile u8 *)(addr))
  #define writeb(b,addr)		out_8((volatile u8 *)(addr), (b))
  #if !defined(__BIG_ENDIAN)
  #define readw(addr)		(*(volatile u16 *) (addr))
  #define readl(addr)		(*(volatile u32 *) (addr))
  #define writew(b,addr)		((*(volatile u16 *) (addr)) = (b))
  #define writel(b,addr)		((*(volatile u32 *) (addr)) = (b))
  #else
  #define readw(addr)		in_be16((volatile u16 *)(addr))
  #define readl(addr)		in_be32((volatile u32 *)(addr))
  #define writew(b,addr)		out_be16((volatile u16 *)(addr),(b))
  #define writel(b,addr)		out_be32((volatile u32 *)(addr),(b))
  #endif
  
  /*
   * The insw/outsw/insl/outsl macros don't do byte-swapping.
   * They are only used in practice for transferring buffers which
   * are arrays of bytes, and byte-swapping is not appropriate in
   * that case.  - paulus
   */
  #define insb(port, buf, ns)	_insb((u8 *)((port)+_IO_BASE), (buf), (ns))
  #define outsb(port, buf, ns)	_outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
  #define insw(port, buf, ns)	_insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
  #define outsw(port, buf, ns)	_outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
  #define insl(port, buf, nl)	_insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
  #define outsl(port, buf, nl)	_outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
  
  #define inb(port)		in_8((u8 *)((port)+_IO_BASE))
  #define outb(val, port)		out_8((u8 *)((port)+_IO_BASE), (val))
  #if !defined(__BIG_ENDIAN)
  #define inw(port)		in_be16((u16 *)((port)+_IO_BASE))
  #define outw(val, port)		out_be16((u16 *)((port)+_IO_BASE), (val))
  #define inl(port)		in_be32((u32 *)((port)+_IO_BASE))
  #define outl(val, port)		out_be32((u32 *)((port)+_IO_BASE), (val))
  #else
  #define inw(port)		in_le16((u16 *)((port)+_IO_BASE))
  #define outw(val, port)		out_le16((u16 *)((port)+_IO_BASE), (val))
  #define inl(port)		in_le32((u32 *)((port)+_IO_BASE))
  #define outl(val, port)		out_le32((u32 *)((port)+_IO_BASE), (val))
  #endif
  
  #define mb() __asm__ __volatile__ ("" : : : "memory")
  
  static inline void _insb(volatile u8 * port, void *buf, int ns)
  {
  	u8 *data = (u8 *) buf;
  	while (ns--)
  		*data++ = *port;
  }
  
  static inline void _outsb(volatile u8 * port, const void *buf, int ns)
  {
  	u8 *data = (u8 *) buf;
  	while (ns--)
  		*port = *data++;
  }
  
  static inline void _insw(volatile u16 * port, void *buf, int ns)
  {
  	u16 *data = (u16 *) buf;
  	while (ns--)
  		*data++ = __sw16(*port);
  }
  
  static inline void _outsw(volatile u16 * port, const void *buf, int ns)
  {
  	u16 *data = (u16 *) buf;
  	while (ns--) {
  		*port = __sw16(*data);
  		data++;
  	}
  }
  
  static inline void _insl(volatile u32 * port, void *buf, int nl)
  {
  	u32 *data = (u32 *) buf;
  	while (nl--)
  		*data++ = __sw32(*port);
  }
  
  static inline void _outsl(volatile u32 * port, const void *buf, int nl)
  {
  	u32 *data = (u32 *) buf;
  	while (nl--) {
  		*port = __sw32(*data);
  		data++;
  	}
  }
  
  static inline void _insw_ns(volatile u16 * port, void *buf, int ns)
  {
  	u16 *data = (u16 *) buf;
  	while (ns--)
  		*data++ = *port;
  }
  
  static inline void _outsw_ns(volatile u16 * port, const void *buf, int ns)
  {
  	u16 *data = (u16 *) buf;
  	while (ns--) {
  		*port = *data++;
  	}
  }
  
  static inline void _insl_ns(volatile u32 * port, void *buf, int nl)
  {
  	u32 *data = (u32 *) buf;
  	while (nl--)
  		*data++ = *port;
  }
  
  static inline void _outsl_ns(volatile u32 * port, const void *buf, int nl)
  {
  	u32 *data = (u32 *) buf;
  	while (nl--) {
  		*port = *data;
  		data++;
  	}
  }
  
  /*
   * The *_ns versions below don't do byte-swapping.
   * Neither do the standard versions now, these are just here
   * for older code.
   */
  #define insw_ns(port, buf, ns)	_insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
  #define outsw_ns(port, buf, ns)	_outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
  #define insl_ns(port, buf, nl)	_insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
  #define outsl_ns(port, buf, nl)	_outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
  
  #define IO_SPACE_LIMIT ~0
  
  /*
   * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
   */
  static inline int in_8(volatile u8 * addr)
  {
  	return (int)*addr;
  }
  
  static inline void out_8(volatile u8 * addr, int val)
  {
  	*addr = (u8) val;
  }
  
  static inline int in_le16(volatile u16 * addr)
  {
  	return __sw16(*addr);
  }
  
  static inline int in_be16(volatile u16 * addr)
  {
  	return (*addr & 0xFFFF);
  }
  
  static inline void out_le16(volatile u16 * addr, int val)
  {
  	*addr = __sw16(val);
  }
  
  static inline void out_be16(volatile u16 * addr, int val)
  {
  	*addr = (u16) val;
  }
  
  static inline unsigned in_le32(volatile u32 * addr)
  {
  	return __sw32(*addr);
  }
  
  static inline unsigned in_be32(volatile u32 * addr)
  {
  	return (*addr);
  }
  
  static inline void out_le32(volatile unsigned *addr, int val)
  {
  	*addr = __sw32(val);
  }
  
  static inline void out_be32(volatile unsigned *addr, int val)
  {
  	*addr = val;
  }
  
  /* Clear and set bits in one shot. These macros can be used to clear and
   * set multiple bits in a register using a single call. These macros can
   * also be used to set a multiple-bit bit pattern using a mask, by
   * specifying the mask in the 'clear' parameter and the new bit pattern
   * in the 'set' parameter.
   */
  
  #define clrbits(type, addr, clear) \
  	out_##type((addr), in_##type(addr) & ~(clear))
  
  #define setbits(type, addr, set) \
  	out_##type((addr), in_##type(addr) | (set))
  
  #define clrsetbits(type, addr, clear, set) \
  	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
  
  #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
  #define setbits_be32(addr, set) setbits(be32, addr, set)
  #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
  
  #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
  #define setbits_le32(addr, set) setbits(le32, addr, set)
  #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
  
  #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
  #define setbits_be16(addr, set) setbits(be16, addr, set)
  #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
  
  #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
  #define setbits_le16(addr, set) setbits(le16, addr, set)
  #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
  
  #define clrbits_8(addr, clear) clrbits(8, addr, clear)
  #define setbits_8(addr, set) setbits(8, addr, set)
  #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
  
  static inline void sync(void)
  {
  	/* This sync function is for PowerPC or other architecture instruction
  	 * ColdFire does not have this instruction. Dummy function, added for
  	 * compatibility (CFI driver)
  	 */
  }
  
  #include <asm-generic/io.h>
  
  #endif				/* __ASM_M68K_IO_H__ */
  