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* License. See the file "COPYING" in the main directory of this archive
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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* for more details.
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*
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*
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- * Copyright (C) 1996 by Ralf Baechle
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- * Copyright (C) 2000 by Maciej W. Rozycki
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- *
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- * Defitions for the address spaces of the MIPS CPUs.
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+ * Copyright (C) 1996, 99 Ralf Baechle
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+ * Copyright (C) 2000, 2002 Maciej W. Rozycki
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+ * Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
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+ */
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+#ifndef _ASM_ADDRSPACE_H
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+#define _ASM_ADDRSPACE_H
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+
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+/*
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+ * Configure language
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+ */
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+#ifdef __ASSEMBLY__
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+#define _ATYPE_
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+#define _ATYPE32_
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+#define _ATYPE64_
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+#define _CONST64_(x) x
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+#else
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+#define _ATYPE_ __PTRDIFF_TYPE__
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+#define _ATYPE32_ int
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+#define _ATYPE64_ __s64
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+#ifdef CONFIG_64BIT
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+#define _CONST64_(x) x ## L
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+#else
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+#define _CONST64_(x) x ## LL
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+#endif
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+#endif
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+
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+/*
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+ * 32-bit MIPS address spaces
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+ */
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+#ifdef __ASSEMBLY__
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+#define _ACAST32_
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+#define _ACAST64_
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+#else
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+#define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */
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+#define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */
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+#endif
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+
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+/*
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+ * Returns the kernel segment base of a given address
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+ */
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+#define KSEGX(a) ((_ACAST32_ (a)) & 0xe0000000)
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+
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+/*
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+ * Returns the physical address of a CKSEGx / XKPHYS address
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+ */
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+#define CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff)
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+#define XPHYSADDR(a) ((_ACAST64_(a)) & \
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+ _CONST64_(0x000000ffffffffff))
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+
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+#ifdef CONFIG_64BIT
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+
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+/*
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+ * Memory segments (64bit kernel mode addresses)
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+ * The compatibility segments use the full 64-bit sign extended value. Note
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+ * the R8000 doesn't have them so don't reference these in generic MIPS code.
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+ */
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+#define XKUSEG _CONST64_(0x0000000000000000)
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+#define XKSSEG _CONST64_(0x4000000000000000)
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+#define XKPHYS _CONST64_(0x8000000000000000)
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+#define XKSEG _CONST64_(0xc000000000000000)
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+#define CKSEG0 _CONST64_(0xffffffff80000000)
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+#define CKSEG1 _CONST64_(0xffffffffa0000000)
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+#define CKSSEG _CONST64_(0xffffffffc0000000)
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+#define CKSEG3 _CONST64_(0xffffffffe0000000)
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+
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+#define CKSEG0ADDR(a) (CPHYSADDR(a) | CKSEG0)
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+#define CKSEG1ADDR(a) (CPHYSADDR(a) | CKSEG1)
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+#define CKSEG2ADDR(a) (CPHYSADDR(a) | CKSEG2)
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+#define CKSEG3ADDR(a) (CPHYSADDR(a) | CKSEG3)
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+
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+#else
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+
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+#define CKSEG0ADDR(a) (CPHYSADDR(a) | KSEG0)
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+#define CKSEG1ADDR(a) (CPHYSADDR(a) | KSEG1)
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+#define CKSEG2ADDR(a) (CPHYSADDR(a) | KSEG2)
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+#define CKSEG3ADDR(a) (CPHYSADDR(a) | KSEG3)
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+
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+/*
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+ * Map an address to a certain kernel segment
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*/
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*/
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-#ifndef __ASM_MIPS_ADDRSPACE_H
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-#define __ASM_MIPS_ADDRSPACE_H
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+#define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0)
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+#define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1)
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+#define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2)
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+#define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3)
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/*
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/*
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* Memory segments (32bit kernel mode addresses)
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* Memory segments (32bit kernel mode addresses)
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+ * These are the traditional names used in the 32-bit universe.
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*/
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*/
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#define KUSEG 0x00000000
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#define KUSEG 0x00000000
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#define KSEG0 0x80000000
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#define KSEG0 0x80000000
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@@ -20,25 +98,34 @@
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#define KSEG2 0xc0000000
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#define KSEG2 0xc0000000
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#define KSEG3 0xe0000000
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#define KSEG3 0xe0000000
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-#define K0BASE KSEG0
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+#define CKUSEG 0x00000000
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+#define CKSEG0 0x80000000
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+#define CKSEG1 0xa0000000
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+#define CKSEG2 0xc0000000
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+#define CKSEG3 0xe0000000
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+
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+#endif
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/*
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/*
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- * Returns the kernel segment base of a given address
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+ * Cache modes for XKPHYS address conversion macros
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*/
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*/
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-#ifndef __ASSEMBLY__
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-#define KSEGX(a) (((unsigned long)(a)) & 0xe0000000)
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-#else
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-#define KSEGX(a) ((a) & 0xe0000000)
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-#endif
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+#define K_CALG_COH_EXCL1_NOL2 0
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+#define K_CALG_COH_SHRL1_NOL2 1
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+#define K_CALG_UNCACHED 2
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+#define K_CALG_NONCOHERENT 3
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+#define K_CALG_COH_EXCL 4
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+#define K_CALG_COH_SHAREABLE 5
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+#define K_CALG_NOTUSED 6
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+#define K_CALG_UNCACHED_ACCEL 7
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/*
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/*
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- * Returns the physical address of a KSEG0/KSEG1 address
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+ * 64-bit address conversions
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*/
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*/
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-#ifndef __ASSEMBLY__
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-#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff)
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-#else
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-#define PHYSADDR(a) ((a) & 0x1fffffff)
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-#endif
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+#define PHYS_TO_XKSEG_UNCACHED(p) PHYS_TO_XKPHYS(K_CALG_UNCACHED, (p))
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+#define PHYS_TO_XKSEG_CACHED(p) PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE, (p))
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+#define XKPHYS_TO_PHYS(p) ((p) & TO_PHYS_MASK)
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+#define PHYS_TO_XKPHYS(cm, a) (_CONST64_(0x8000000000000000) | \
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+ (_CONST64_(cm) << 59) | (a))
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/*
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/*
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* Returns the uncached address of a sdram address
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* Returns the uncached address of a sdram address
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@@ -52,31 +139,27 @@
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#define UNCACHED_SDRAM(a) KSEG1ADDR(a)
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#define UNCACHED_SDRAM(a) KSEG1ADDR(a)
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#endif /* CONFIG_AU1X00 */
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#endif /* CONFIG_AU1X00 */
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#endif /* __ASSEMBLY__ */
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#endif /* __ASSEMBLY__ */
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+
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/*
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/*
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- * Map an address to a certain kernel segment
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+ * The ultimate limited of the 64-bit MIPS architecture: 2 bits for selecting
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+ * the region, 3 bits for the CCA mode. This leaves 59 bits of which the
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+ * R8000 implements most with its 48-bit physical address space.
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*/
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*/
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-#ifndef __ASSEMBLY__
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-#define KSEG0ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0))
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-#define KSEG1ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1))
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-#define KSEG2ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2))
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-#define KSEG3ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3))
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-#else
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-#define KSEG0ADDR(a) (((a) & 0x1fffffff) | KSEG0)
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-#define KSEG1ADDR(a) (((a) & 0x1fffffff) | KSEG1)
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-#define KSEG2ADDR(a) (((a) & 0x1fffffff) | KSEG2)
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-#define KSEG3ADDR(a) (((a) & 0x1fffffff) | KSEG3)
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-#endif
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+#define TO_PHYS_MASK _CONST64_(0x07ffffffffffffff) /* 2^^59 - 1 */
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+
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+#ifndef CONFIG_CPU_R8000
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/*
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/*
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- * Memory segments (64bit kernel mode addresses)
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+ * The R8000 doesn't have the 32-bit compat spaces so we don't define them
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+ * in order to catch bugs in the source code.
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*/
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*/
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-#define XKUSEG 0x0000000000000000
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-#define XKSSEG 0x4000000000000000
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-#define XKPHYS 0x8000000000000000
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-#define XKSEG 0xc000000000000000
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-#define CKSEG0 0xffffffff80000000
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-#define CKSEG1 0xffffffffa0000000
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-#define CKSSEG 0xffffffffc0000000
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-#define CKSEG3 0xffffffffe0000000
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-
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-#endif /* __ASM_MIPS_ADDRSPACE_H */
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+
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+#define COMPAT_K1BASE32 _CONST64_(0xffffffffa0000000)
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+#define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
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+
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+#endif
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+
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+#define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK)
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+#define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE)
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+
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+#endif /* _ASM_ADDRSPACE_H */
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