MIPS: add support for 64 bit addressing

Prepare for upcoming mips64 support. This patch add mips64 address
support.
Signed-off-by: NZhizhou Zhang <etou.zh@gmail.com>
[daniel.schwierzeck@gmail.com: prefer _MIPS_SZLONG in posix_types.h to fix some warnings]
Signed-off-by: NDaniel Schwierzeck <daniel.schwierzeck@gmail.com>

arch/mips/include/asm/addrspace.h

@@ -136,7 +136,7 @@
    cannot access physical memory directly from core */
 #define UNCACHED_SDRAM(a) (((unsigned long)(a)) | 0x20000000)
 #else	/* !CONFIG_SOC_AU1X00 */
-#define UNCACHED_SDRAM(a) KSEG1ADDR(a)
+#define UNCACHED_SDRAM(a) CKSEG1ADDR(a)
 #endif	/* CONFIG_SOC_AU1X00 */
 #endif	/* __ASSEMBLY__ */
 

arch/mips/include/asm/io.h

@@ -120,12 +120,20 @@ static inline void set_io_port_base(unsigned long base)
  */
 extern inline phys_addr_t virt_to_phys(volatile void * address)
 {
+#ifndef CONFIG_64BIT
 	return CPHYSADDR(address);
+#else
+	return XPHYSADDR(address);
+#endif
 }
 
 extern inline void * phys_to_virt(unsigned long address)
 {
+#ifndef CONFIG_64BIT
 	return (void *)KSEG0ADDR(address);
+#else
+	return (void *)CKSEG0ADDR(address);
+#endif
 }
 
 /*
@@ -133,12 +141,20 @@ extern inline void * phys_to_virt(unsigned long address)
  */
 extern inline unsigned long virt_to_bus(volatile void * address)
 {
+#ifndef CONFIG_64BIT
 	return CPHYSADDR(address);
+#else
+	return XPHYSADDR(address);
+#endif
 }
 
 extern inline void * bus_to_virt(unsigned long address)
 {
+#ifndef CONFIG_64BIT
 	return (void *)KSEG0ADDR(address);
+#else
+	return (void *)CKSEG0ADDR(address);
+#endif
 }
 
 /*

arch/mips/include/asm/posix_types.h

@@ -24,9 +24,15 @@ typedef int		__kernel_pid_t;
 typedef int		__kernel_ipc_pid_t;
 typedef int		__kernel_uid_t;
 typedef int		__kernel_gid_t;
+#if _MIPS_SZLONG != 64
 typedef unsigned int	__kernel_size_t;
 typedef int		__kernel_ssize_t;
 typedef int		__kernel_ptrdiff_t;
+#else
+typedef unsigned long	__kernel_size_t;
+typedef long		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
+#endif
 typedef long		__kernel_time_t;
 typedef long		__kernel_suseconds_t;
 typedef long		__kernel_clock_t;