linux/include/asm-mips/mach-ip32/mangle-port.h
Atsushi Nemoto a8433137ea [MIPS] Make I/O helpers more customizable
1. Move ioswab*() and __mem_ioswab*() to mangle-port.h.  This gets rid
   of CONFIG_SGI_IP22 from include/asm-mips/io.h.
    
2. Pass a virtual address to *ioswab*().  Then we can provide
   mach-specific *ioswab*() and can do every evil thing based on its
   argument.  It could be useful on machines which have regions with
   different endian conversion scheme.
    
3. Call __swizzle_addr*() _after_ adding mips_io_port_base.  This
   unifies the meaning of the argument of __swizzle_addr*() (always
   virtual address).  Then mach-specific __swizzle_addr*() can do every
   evil thing based on the argument.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21 13:27:45 +00:00

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/*
* 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.
*
* Copyright (C) 2003 Ladislav Michl
* Copyright (C) 2004 Ralf Baechle
*/
#ifndef __ASM_MACH_IP32_MANGLE_PORT_H
#define __ASM_MACH_IP32_MANGLE_PORT_H
#define __swizzle_addr_b(port) ((port) ^ 3)
#define __swizzle_addr_w(port) ((port) ^ 2)
#define __swizzle_addr_l(port) (port)
#define __swizzle_addr_q(port) (port)
# define ioswabb(a,x) (x)
# define __mem_ioswabb(a,x) (x)
# define ioswabw(a,x) (x)
# define __mem_ioswabw(a,x) cpu_to_le16(x)
# define ioswabl(a,x) (x)
# define __mem_ioswabl(a,x) cpu_to_le32(x)
# define ioswabq(a,x) (x)
# define __mem_ioswabq(a,x) cpu_to_le32(x)
#endif /* __ASM_MACH_IP32_MANGLE_PORT_H */