diff --git a/board/gth2/gth2.c b/board/gth2/gth2.c
index 9bc4d3f..3e56678 100644
--- a/board/gth2/gth2.c
+++ b/board/gth2/gth2.c
@@ -36,7 +36,7 @@
 #define SDRAM_SIZE ((64*1024*1024)-(12*4096))
 
 
-#define SERIAL_LOG_BUFFER KSEG1ADDR(SDRAM_SIZE + (8*4096))
+#define SERIAL_LOG_BUFFER CKSEG1ADDR(SDRAM_SIZE + (8*4096))
 
 void inline log_serial_char(char c){
 	char *serial_log_buffer = (char*)SERIAL_LOG_BUFFER;
diff --git a/board/incaip/incaip.c b/board/incaip/incaip.c
index c624b3d..dc51373 100644
--- a/board/incaip/incaip.c
+++ b/board/incaip/incaip.c
@@ -63,7 +63,7 @@
 
 		/* Can't probe for RAM size unless we are running from Flash.
 		 */
-	if (PHYSADDR(our_address) < PHYSADDR(PHYS_FLASH_1))
+	if (CPHYSADDR(our_address) < CPHYSADDR(PHYS_FLASH_1))
 	{
 		return max_sdram_size();
 	}
diff --git a/board/purple/purple.c b/board/purple/purple.c
index 89cb906..72d5734 100644
--- a/board/purple/purple.c
+++ b/board/purple/purple.c
@@ -85,16 +85,16 @@
 			while (p4 < 32 && done == 0) {
 			    WRITE_MC_IOGP_1;
 
-			    for (addr = KSEG1 + 0x4000;
-				 addr < KSEG1ADDR (size);
+			    for (addr = CKSEG1 + 0x4000;
+				 addr < CKSEG1ADDR (size);
 				 addr = addr + 4) {
 					*(uint *) addr = 0xaa55aa55;
 			    }
 
 			    pass = 1;
 
-			    for (addr = KSEG1 + 0x4000;
-				 addr < KSEG1ADDR (size) && pass == 1;
+			    for (addr = CKSEG1 + 0x4000;
+				 addr < CKSEG1ADDR (size) && pass == 1;
 				 addr = addr + 4) {
 					if (*(uint *) addr != 0xaa55aa55)
 						pass = 0;
@@ -138,7 +138,7 @@
 	ulong	size	= (1 << (rows + cols)) * (1 << (dw - 1)) * CFG_NB;
 	void (*  sdram_init) (ulong);
 
-	sdram_init = (void (*)(ulong)) KSEG0ADDR(&sdram_timing_init);
+	sdram_init = (void (*)(ulong)) CKSEG0ADDR(&sdram_timing_init);
 
 	sdram_init(0x10000);
 
@@ -260,14 +260,14 @@
 	/* flush caches
 	 */
 
-	start = KSEG0;
+	start = CKSEG0;
 	end = start + CFG_DCACHE_SIZE;
 	while(start < end) {
 		cache_unroll(start,Index_Writeback_Inv_D);
 		start += CFG_CACHELINE_SIZE;
 	}
 
-	start = KSEG0;
+	start = CKSEG0;
 	end = start + CFG_ICACHE_SIZE;
 	while(start < end) {
 		cache_unroll(start,Index_Invalidate_I);
diff --git a/board/tb0229/vr4131-pci.c b/board/tb0229/vr4131-pci.c
index 0ee4bf3..4c91923 100644
--- a/board/tb0229/vr4131-pci.c
+++ b/board/tb0229/vr4131-pci.c
@@ -13,34 +13,34 @@
 #include <pci.h>
 #include <asm/addrspace.h>
 
-#define VR4131_PCIMMAW1REG	(volatile unsigned int*)(KSEG1 + 0x0f000c00)
-#define VR4131_PCIMMAW2REG	(volatile unsigned int*)(KSEG1 + 0x0f000c04)
-#define VR4131_PCITAW1REG	(volatile unsigned int*)(KSEG1 + 0x0f000c08)
-#define VR4131_PCITAW2REG	(volatile unsigned int*)(KSEG1 + 0x0f000c0c)
-#define VR4131_PCIMIOAWREG	(volatile unsigned int*)(KSEG1 + 0x0f000c10)
-#define VR4131_PCICONFDREG	(volatile unsigned int*)(KSEG1 + 0x0f000c14)
-#define VR4131_PCICONFAREG	(volatile unsigned int*)(KSEG1 + 0x0f000c18)
-#define VR4131_PCIMAILREG	(volatile unsigned int*)(KSEG1 + 0x0f000c1c)
-#define VR4131_BUSERRADREG	(volatile unsigned int*)(KSEG1 + 0x0f000c24)
-#define VR4131_INTCNTSTAREG	(volatile unsigned int*)(KSEG1 + 0x0f000c28)
-#define VR4131_PCIEXACCREG	(volatile unsigned int*)(KSEG1 + 0x0f000c2c)
-#define VR4131_PCIRECONTREG	(volatile unsigned int*)(KSEG1 + 0x0f000c30)
-#define VR4131_PCIENREG		(volatile unsigned int*)(KSEG1 + 0x0f000c34)
-#define VR4131_PCICLKSELREG	(volatile unsigned int*)(KSEG1 + 0x0f000c38)
-#define VR4131_PCITRDYREG	(volatile unsigned int*)(KSEG1 + 0x0f000c3c)
-#define VR4131_PCICLKRUNREG	(volatile unsigned int*)(KSEG1 + 0x0f000c60)
-#define VR4131_PCIHOSTCONFIG	(volatile unsigned int*)(KSEG1 + 0x0f000d00)
-#define VR4131_VENDORIDREG	(volatile unsigned int*)(KSEG1 + 0x0f000d00)
-#define VR4131_DEVICEIDREG	(volatile unsigned int*)(KSEG1 + 0x0f000d00)
-#define VR4131_COMMANDREG	(volatile unsigned int*)(KSEG1 + 0x0f000d04)
-#define VR4131_STATUSREG	(volatile unsigned int*)(KSEG1 + 0x0f000d04)
-#define VR4131_REVREG		(volatile unsigned int*)(KSEG1 + 0x0f000d08)
-#define VR4131_CLASSREG		(volatile unsigned int*)(KSEG1 + 0x0f000d08)
-#define VR4131_CACHELSREG	(volatile unsigned int*)(KSEG1 + 0x0f000d0c)
-#define VR4131_LATTIMERRG	(volatile unsigned int*)(KSEG1 + 0x0f000d0c)
-#define VR4131_MAILBAREG	(volatile unsigned int*)(KSEG1 + 0x0f000d10)
-#define VR4131_PCIMBA1REG	(volatile unsigned int*)(KSEG1 + 0x0f000d14)
-#define VR4131_PCIMBA2REG	(volatile unsigned int*)(KSEG1 + 0x0f000d18)
+#define VR4131_PCIMMAW1REG	(volatile unsigned int *)(CKSEG1 + 0x0f000c00)
+#define VR4131_PCIMMAW2REG	(volatile unsigned int *)(CKSEG1 + 0x0f000c04)
+#define VR4131_PCITAW1REG	(volatile unsigned int *)(CKSEG1 + 0x0f000c08)
+#define VR4131_PCITAW2REG	(volatile unsigned int *)(CKSEG1 + 0x0f000c0c)
+#define VR4131_PCIMIOAWREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c10)
+#define VR4131_PCICONFDREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c14)
+#define VR4131_PCICONFAREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c18)
+#define VR4131_PCIMAILREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c1c)
+#define VR4131_BUSERRADREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c24)
+#define VR4131_INTCNTSTAREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c28)
+#define VR4131_PCIEXACCREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c2c)
+#define VR4131_PCIRECONTREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c30)
+#define VR4131_PCIENREG		(volatile unsigned int *)(CKSEG1 + 0x0f000c34)
+#define VR4131_PCICLKSELREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c38)
+#define VR4131_PCITRDYREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c3c)
+#define VR4131_PCICLKRUNREG	(volatile unsigned int *)(CKSEG1 + 0x0f000c60)
+#define VR4131_PCIHOSTCONFIG	(volatile unsigned int *)(CKSEG1 + 0x0f000d00)
+#define VR4131_VENDORIDREG	(volatile unsigned int *)(CKSEG1 + 0x0f000d00)
+#define VR4131_DEVICEIDREG	(volatile unsigned int *)(CKSEG1 + 0x0f000d00)
+#define VR4131_COMMANDREG	(volatile unsigned int *)(CKSEG1 + 0x0f000d04)
+#define VR4131_STATUSREG	(volatile unsigned int *)(CKSEG1 + 0x0f000d04)
+#define VR4131_REVREG		(volatile unsigned int *)(CKSEG1 + 0x0f000d08)
+#define VR4131_CLASSREG		(volatile unsigned int *)(CKSEG1 + 0x0f000d08)
+#define VR4131_CACHELSREG	(volatile unsigned int *)(CKSEG1 + 0x0f000d0c)
+#define VR4131_LATTIMERRG	(volatile unsigned int *)(CKSEG1 + 0x0f000d0c)
+#define VR4131_MAILBAREG	(volatile unsigned int *)(CKSEG1 + 0x0f000d10)
+#define VR4131_PCIMBA1REG	(volatile unsigned int *)(CKSEG1 + 0x0f000d14)
+#define VR4131_PCIMBA2REG	(volatile unsigned int *)(CKSEG1 + 0x0f000d18)
 
 /*#define VR41XX_PCIIRQ_OFFSET    (VR41XX_IRQ_MAX + 1)	*/
 /*#define VR41XX_PCIIRQ_MAX       (VR41XX_IRQ_MAX + 12)	*/
diff --git a/cpu/mips/cache.S b/cpu/mips/cache.S
index 7966079..ee5d411 100644
--- a/cpu/mips/cache.S
+++ b/cpu/mips/cache.S
@@ -40,7 +40,7 @@
  */
 #define MIPS_MAX_CACHE_SIZE	0x10000
 
-#define INDEX_BASE	KSEG0
+#define INDEX_BASE	CKSEG0
 
 	.macro	cache_op op addr
 	.set	push
@@ -218,7 +218,7 @@
 	/*
 	 * Now clear that much memory starting from zero.
 	 */
-	PTR_LI		a0, KSEG1
+	PTR_LI		a0, CKSEG1
 	PTR_ADDU	a1, a0, v0
 2:	PTR_ADDIU	a0, 64
 	f_fill64	a0, -64, zero
@@ -318,7 +318,7 @@
 	.globl	mips_cache_lock
 	.ent	mips_cache_lock
 mips_cache_lock:
-	li	a1, K0BASE - CACHE_LOCK_SIZE
+	li	a1, CKSEG0 - CACHE_LOCK_SIZE
 	addu	a0, a1
 	li	a2, CACHE_LOCK_SIZE
 	li	a3, CFG_CACHELINE_SIZE
diff --git a/drivers/net/inca-ip_sw.c b/drivers/net/inca-ip_sw.c
index e4aaed6..a079b60 100644
--- a/drivers/net/inca-ip_sw.c
+++ b/drivers/net/inca-ip_sw.c
@@ -234,7 +234,7 @@
 	/* Initialize the descriptor rings.
 	 */
 	for (i = 0; i < NUM_RX_DESC; i++) {
-		inca_rx_descriptor_t * rx_desc = KSEG1ADDR(&rx_ring[i]);
+		inca_rx_descriptor_t * rx_desc = (inca_rx_descriptor_t *)CKSEG1ADDR(&rx_ring[i]);
 		memset(rx_desc, 0, sizeof(rx_ring[i]));
 
 		/* Set maximum size of receive buffer.
@@ -252,14 +252,14 @@
 			/* Let the last descriptor point to the first
 			 * one.
 			 */
-			rx_desc->nextRxDescPtr = KSEG1ADDR((u32)rx_ring);
+			rx_desc->nextRxDescPtr = (u32)CKSEG1ADDR(rx_ring);
 		} else {
 			/* Set the address of the next descriptor.
 			 */
-			rx_desc->nextRxDescPtr = (u32)KSEG1ADDR(&rx_ring[i+1]);
+			rx_desc->nextRxDescPtr = (u32)CKSEG1ADDR(&rx_ring[i+1]);
 		}
 
-		rx_desc->RxDataPtr = (u32)KSEG1ADDR(NetRxPackets[i]);
+		rx_desc->RxDataPtr = (u32)CKSEG1ADDR(NetRxPackets[i]);
 	}
 
 #if 0
@@ -268,7 +268,7 @@
 #endif
 
 	for (i = 0; i < NUM_TX_DESC; i++) {
-		inca_tx_descriptor_t * tx_desc = KSEG1ADDR(&tx_ring[i]);
+		inca_tx_descriptor_t * tx_desc = (inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[i]);
 
 		memset(tx_desc, 0, sizeof(tx_ring[i]));
 
@@ -282,11 +282,11 @@
 				/* Let the last descriptor point to the
 				 * first one.
 				 */
-			tx_desc->nextTxDescPtr = KSEG1ADDR((u32)tx_ring);
+			tx_desc->nextTxDescPtr = (u32)CKSEG1ADDR(tx_ring);
 		} else {
 				/* Set the address of the next descriptor.
 				 */
-			tx_desc->nextTxDescPtr = (u32)KSEG1ADDR(&tx_ring[i+1]);
+			tx_desc->nextTxDescPtr = (u32)CKSEG1ADDR(&tx_ring[i+1]);
 		}
 	}
 
@@ -346,7 +346,7 @@
 	int		       res	= -1;
 	u32		       command;
 	u32		       regValue;
-	inca_tx_descriptor_t * tx_desc	= KSEG1ADDR(&tx_ring[tx_new]);
+	inca_tx_descriptor_t * tx_desc	= (inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_new]);
 
 #if 0
 	printf("Entered inca_switch_send()\n");
@@ -365,7 +365,7 @@
 	}
 
 	if (tx_old_hold >= 0) {
-		KSEG1ADDR(&tx_ring[tx_old_hold])->params.field.HOLD = 1;
+		((inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_old_hold]))->params.field.HOLD = 1;
 	}
 	tx_old_hold = tx_hold;
 
@@ -376,7 +376,7 @@
 	tx_desc->TxDataPtr = (u32)packet;
 	tx_desc->params.field.NBA = length;
 
-	KSEG1ADDR(&tx_ring[tx_hold])->params.field.HOLD = 0;
+	((inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_hold]))->params.field.HOLD = 0;
 
 	tx_hold = tx_new;
 	tx_new	= (tx_new + 1) % NUM_TX_DESC;
@@ -397,7 +397,7 @@
 	DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR0, regValue);
 
 #if 1
-	for(i = 0; KSEG1ADDR(&tx_ring[tx_hold])->C == 0; i++) {
+	for(i = 0; ((inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_hold]))->C == 0; i++) {
 		if (i >= TOUT_LOOP) {
 			printf("%s: tx buffer not ready\n", dev->name);
 			goto Done;
@@ -423,7 +423,7 @@
 #endif
 
 	for (;;) {
-		rx_desc = KSEG1ADDR(&rx_ring[rx_new]);
+		rx_desc = (inca_rx_descriptor_t *)CKSEG1ADDR(&rx_ring[rx_new]);
 
 		if (rx_desc->status.field.C == 0) {
 			break;
@@ -456,7 +456,7 @@
 #if 0
 			printf("Received %d bytes\n", length);
 #endif
-			NetReceive((void*)KSEG1ADDR(NetRxPackets[rx_new]), length - 4);
+			NetReceive((void*)CKSEG1ADDR(NetRxPackets[rx_new]), length - 4);
 		} else {
 #if 1
 			printf("Zero length!!!\n");
@@ -464,7 +464,7 @@
 		}
 
 
-		KSEG1ADDR(&rx_ring[rx_hold])->params.field.HOLD = 0;
+		((inca_rx_descriptor_t *)CKSEG1ADDR(&rx_ring[rx_hold]))->params.field.HOLD = 0;
 
 		rx_hold = rx_new;
 
diff --git a/include/asm-mips/addrspace.h b/include/asm-mips/addrspace.h
index 0e6abd7..767804c 100644
--- a/include/asm-mips/addrspace.h
+++ b/include/asm-mips/addrspace.h
@@ -3,16 +3,94 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1996 by Ralf Baechle
- * Copyright (C) 2000 by Maciej W. Rozycki
- *
- * Defitions for the address spaces of the MIPS CPUs.
+ * Copyright (C) 1996, 99 Ralf Baechle
+ * Copyright (C) 2000, 2002  Maciej W. Rozycki
+ * Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
  */
-#ifndef __ASM_MIPS_ADDRSPACE_H
-#define __ASM_MIPS_ADDRSPACE_H
+#ifndef _ASM_ADDRSPACE_H
+#define _ASM_ADDRSPACE_H
+
+/*
+ *  Configure language
+ */
+#ifdef __ASSEMBLY__
+#define _ATYPE_
+#define _ATYPE32_
+#define _ATYPE64_
+#define _CONST64_(x)	x
+#else
+#define _ATYPE_		__PTRDIFF_TYPE__
+#define _ATYPE32_	int
+#define _ATYPE64_	__s64
+#ifdef CONFIG_64BIT
+#define _CONST64_(x)	x ## L
+#else
+#define _CONST64_(x)	x ## LL
+#endif
+#endif
+
+/*
+ *  32-bit MIPS address spaces
+ */
+#ifdef __ASSEMBLY__
+#define _ACAST32_
+#define _ACAST64_
+#else
+#define _ACAST32_		(_ATYPE_)(_ATYPE32_)	/* widen if necessary */
+#define _ACAST64_		(_ATYPE64_)		/* do _not_ narrow */
+#endif
+
+/*
+ * Returns the kernel segment base of a given address
+ */
+#define KSEGX(a)		((_ACAST32_ (a)) & 0xe0000000)
+
+/*
+ * Returns the physical address of a CKSEGx / XKPHYS address
+ */
+#define CPHYSADDR(a)		((_ACAST32_(a)) & 0x1fffffff)
+#define XPHYSADDR(a)		((_ACAST64_(a)) &			\
+				 _CONST64_(0x000000ffffffffff))
+
+#ifdef CONFIG_64BIT
+
+/*
+ * Memory segments (64bit kernel mode addresses)
+ * The compatibility segments use the full 64-bit sign extended value.  Note
+ * the R8000 doesn't have them so don't reference these in generic MIPS code.
+ */
+#define XKUSEG			_CONST64_(0x0000000000000000)
+#define XKSSEG			_CONST64_(0x4000000000000000)
+#define XKPHYS			_CONST64_(0x8000000000000000)
+#define XKSEG			_CONST64_(0xc000000000000000)
+#define CKSEG0			_CONST64_(0xffffffff80000000)
+#define CKSEG1			_CONST64_(0xffffffffa0000000)
+#define CKSSEG			_CONST64_(0xffffffffc0000000)
+#define CKSEG3			_CONST64_(0xffffffffe0000000)
+
+#define CKSEG0ADDR(a)		(CPHYSADDR(a) | CKSEG0)
+#define CKSEG1ADDR(a)		(CPHYSADDR(a) | CKSEG1)
+#define CKSEG2ADDR(a)		(CPHYSADDR(a) | CKSEG2)
+#define CKSEG3ADDR(a)		(CPHYSADDR(a) | CKSEG3)
+
+#else
+
+#define CKSEG0ADDR(a)		(CPHYSADDR(a) | KSEG0)
+#define CKSEG1ADDR(a)		(CPHYSADDR(a) | KSEG1)
+#define CKSEG2ADDR(a)		(CPHYSADDR(a) | KSEG2)
+#define CKSEG3ADDR(a)		(CPHYSADDR(a) | KSEG3)
+
+/*
+ * Map an address to a certain kernel segment
+ */
+#define KSEG0ADDR(a)		(CPHYSADDR(a) | KSEG0)
+#define KSEG1ADDR(a)		(CPHYSADDR(a) | KSEG1)
+#define KSEG2ADDR(a)		(CPHYSADDR(a) | KSEG2)
+#define KSEG3ADDR(a)		(CPHYSADDR(a) | KSEG3)
 
 /*
  * Memory segments (32bit kernel mode addresses)
+ * These are the traditional names used in the 32-bit universe.
  */
 #define KUSEG			0x00000000
 #define KSEG0			0x80000000
@@ -20,25 +98,34 @@
 #define KSEG2			0xc0000000
 #define KSEG3			0xe0000000
 
-#define K0BASE	KSEG0
+#define CKUSEG			0x00000000
+#define CKSEG0			0x80000000
+#define CKSEG1			0xa0000000
+#define CKSEG2			0xc0000000
+#define CKSEG3			0xe0000000
 
-/*
- * Returns the kernel segment base of a given address
- */
-#ifndef __ASSEMBLY__
-#define KSEGX(a)		(((unsigned long)(a)) & 0xe0000000)
-#else
-#define KSEGX(a)		((a) & 0xe0000000)
 #endif
 
 /*
- * Returns the physical address of a KSEG0/KSEG1 address
+ * Cache modes for XKPHYS address conversion macros
  */
-#ifndef __ASSEMBLY__
-#define PHYSADDR(a)		(((unsigned long)(a)) & 0x1fffffff)
-#else
-#define PHYSADDR(a)		((a) & 0x1fffffff)
-#endif
+#define K_CALG_COH_EXCL1_NOL2	0
+#define K_CALG_COH_SHRL1_NOL2	1
+#define K_CALG_UNCACHED		2
+#define K_CALG_NONCOHERENT	3
+#define K_CALG_COH_EXCL		4
+#define K_CALG_COH_SHAREABLE	5
+#define K_CALG_NOTUSED		6
+#define K_CALG_UNCACHED_ACCEL	7
+
+/*
+ * 64-bit address conversions
+ */
+#define PHYS_TO_XKSEG_UNCACHED(p)	PHYS_TO_XKPHYS(K_CALG_UNCACHED, (p))
+#define PHYS_TO_XKSEG_CACHED(p)		PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE, (p))
+#define XKPHYS_TO_PHYS(p)		((p) & TO_PHYS_MASK)
+#define PHYS_TO_XKPHYS(cm, a)		(_CONST64_(0x8000000000000000) | \
+					 (_CONST64_(cm) << 59) | (a))
 
 /*
  * Returns the uncached address of a sdram address
@@ -52,31 +139,27 @@
 #define UNCACHED_SDRAM(a) KSEG1ADDR(a)
 #endif	/* CONFIG_AU1X00 */
 #endif	/* __ASSEMBLY__ */
+
 /*
- * Map an address to a certain kernel segment
+ * The ultimate limited of the 64-bit MIPS architecture:  2 bits for selecting
+ * the region, 3 bits for the CCA mode.  This leaves 59 bits of which the
+ * R8000 implements most with its 48-bit physical address space.
  */
-#ifndef __ASSEMBLY__
-#define KSEG0ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0))
-#define KSEG1ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1))
-#define KSEG2ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2))
-#define KSEG3ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3))
-#else
-#define KSEG0ADDR(a)		(((a) & 0x1fffffff) | KSEG0)
-#define KSEG1ADDR(a)		(((a) & 0x1fffffff) | KSEG1)
-#define KSEG2ADDR(a)		(((a) & 0x1fffffff) | KSEG2)
-#define KSEG3ADDR(a)		(((a) & 0x1fffffff) | KSEG3)
+#define TO_PHYS_MASK	_CONST64_(0x07ffffffffffffff)	/* 2^^59 - 1 */
+
+#ifndef CONFIG_CPU_R8000
+
+/*
+ * The R8000 doesn't have the 32-bit compat spaces so we don't define them
+ * in order to catch bugs in the source code.
+ */
+
+#define COMPAT_K1BASE32		_CONST64_(0xffffffffa0000000)
+#define PHYS_TO_COMPATK1(x)	((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
+
 #endif
 
-/*
- * Memory segments (64bit kernel mode addresses)
- */
-#define XKUSEG			0x0000000000000000
-#define XKSSEG			0x4000000000000000
-#define XKPHYS			0x8000000000000000
-#define XKSEG			0xc000000000000000
-#define CKSEG0			0xffffffff80000000
-#define CKSEG1			0xffffffffa0000000
-#define CKSSEG			0xffffffffc0000000
-#define CKSEG3			0xffffffffe0000000
+#define KDM_TO_PHYS(x)		(_ACAST64_ (x) & TO_PHYS_MASK)
+#define PHYS_TO_K0(x)		(_ACAST64_ (x) | CAC_BASE)
 
-#endif /* __ASM_MIPS_ADDRSPACE_H */
+#endif /* _ASM_ADDRSPACE_H */
diff --git a/include/asm-mips/io.h b/include/asm-mips/io.h
index 7137072..3a0f33f 100644
--- a/include/asm-mips/io.h
+++ b/include/asm-mips/io.h
@@ -120,7 +120,7 @@
  */
 extern inline unsigned long virt_to_phys(volatile void * address)
 {
-	return PHYSADDR(address);
+	return CPHYSADDR(address);
 }
 
 extern inline void * phys_to_virt(unsigned long address)
@@ -133,7 +133,7 @@
  */
 extern inline unsigned long virt_to_bus(volatile void * address)
 {
-	return PHYSADDR(address);
+	return CPHYSADDR(address);
 }
 
 extern inline void * bus_to_virt(unsigned long address)