[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>
diff --git a/include/asm-mips/mach-ip32/mangle-port.h b/include/asm-mips/mach-ip32/mangle-port.h
index 6e25b52..81320eb 100644
--- a/include/asm-mips/mach-ip32/mangle-port.h
+++ b/include/asm-mips/mach-ip32/mangle-port.h
@@ -14,4 +14,13 @@
#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 */