patch-2.4.19 linux-2.4.19/include/asm-mips/addrspace.h

• Lines: 138
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-mips/addrspace.h
• Orig date: Mon Jul 2 13:56:40 2001

diff -urN linux-2.4.18/include/asm-mips/addrspace.h linux-2.4.19/include/asm-mips/addrspace.h
@@ -4,67 +4,102 @@
  * for more details.
  *
  * Copyright (C) 1996 by Ralf Baechle
- * Copyright (C) 2000 by Maciej W. Rozycki
+ * Copyright (C) 2000, 2002  Maciej W. Rozycki
  *
- * Defitions for the address spaces of the MIPS CPUs.
+ * Definitions for the address spaces of the MIPS CPUs.
  */
 #ifndef __ASM_MIPS_ADDRSPACE_H
 #define __ASM_MIPS_ADDRSPACE_H
 
 /*
+ *  Configure language
+ */
+#ifdef __ASSEMBLY__
+#define _ATYPE_
+#define _ATYPE32_
+#define _ATYPE64_
+#else
+#define _ATYPE_		__PTRDIFF_TYPE__
+#define _ATYPE32_	int
+#define _ATYPE64_	long long
+#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
+
+/*
  * Memory segments (32bit kernel mode addresses)
  */
-#define KUSEG                   0x00000000
-#define KSEG0                   0x80000000
-#define KSEG1                   0xa0000000
-#define KSEG2                   0xc0000000
-#define KSEG3                   0xe0000000
+#define KUSEG			0x00000000
+#define KSEG0			0x80000000
+#define KSEG1			0xa0000000
+#define KSEG2			0xc0000000
+#define KSEG3			0xe0000000
 
-#define K0BASE  KSEG0
+#define K0BASE			KSEG0
 
 /*
  * 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
+#define KSEGX(a)		((_ACAST32_ (a)) & 0xe0000000)
 
 /*
  * Returns the physical address of a KSEG0/KSEG1 address
  */
+#define CPHYSADDR(a)		((_ACAST32_ (a)) & 0x1fffffff)
+
 #ifndef __ASSEMBLY__
-#define PHYSADDR(a)		(((unsigned long)(a)) & 0x1fffffff)
-#else
-#define PHYSADDR(a)		((a) & 0x1fffffff)
+#define PHYSADDR(a)		CPHYSADDR(a)
 #endif
 
 /*
  * Map an address to a certain kernel segment
  */
-#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)
-#endif
+#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 (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 XKUSEG			0x0000000000000000
+#define XKSSEG			0x4000000000000000
+#define XKPHYS			0x8000000000000000
+#define XKSEG			0xc000000000000000
+#define CKSEG0			0xffffffff80000000
+#define CKSEG1			0xffffffffa0000000
+#define CKSSEG			0xffffffffc0000000
+#define CKSEG3			0xffffffffe0000000
+
+/*
+ * Cache modes for XKPHYS address conversion macros
+ */
+#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
+
+#define TO_PHYS_MASK		0xfffffffff			/* 36 bit */
+
+/*
+ * 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)		(0x8000000000000000 | ((cm)<<59) | (a))
 
 #endif /* __ASM_MIPS_ADDRSPACE_H */