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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-mips/addrspace.h
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-mips/addrspace.h')
-rw-r--r--include/asm-mips/addrspace.h187
1 files changed, 187 insertions, 0 deletions
diff --git a/include/asm-mips/addrspace.h b/include/asm-mips/addrspace.h
new file mode 100644
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+++ b/include/asm-mips/addrspace.h
@@ -0,0 +1,187 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996, 99 Ralf Baechle
+ * Copyright (C) 2000, 2002 Maciej W. Rozycki
+ * Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
+ */
+#ifndef _ASM_ADDRSPACE_H
+#define _ASM_ADDRSPACE_H
+
+#include <linux/config.h>
+#include <spaces.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
+
+/*
+ * 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)) & 0x000000ffffffffff)
+
+#ifdef CONFIG_MIPS64
+
+/*
+ * 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 0x0000000000000000
+#define XKSSEG 0x4000000000000000
+#define XKPHYS 0x8000000000000000
+#define XKSEG 0xc000000000000000
+#define CKSEG0 0xffffffff80000000
+#define CKSEG1 0xffffffffa0000000
+#define CKSSEG 0xffffffffc0000000
+#define CKSEG3 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
+#define KSEG1 0xa0000000
+#define KSEG2 0xc0000000
+#define KSEG3 0xe0000000
+
+#define CKUSEG 0x00000000
+#define CKSEG0 0x80000000
+#define CKSEG1 0xa0000000
+#define CKSEG2 0xc0000000
+#define CKSEG3 0xe0000000
+
+#endif
+
+/*
+ * 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
+
+/*
+ * 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))
+
+#if defined (CONFIG_CPU_R4300) \
+ || defined (CONFIG_CPU_R4X00) \
+ || defined (CONFIG_CPU_R5000) \
+ || defined (CONFIG_CPU_NEVADA) \
+ || defined (CONFIG_CPU_TX49XX) \
+ || defined (CONFIG_CPU_MIPS64)
+#define KUSIZE 0x0000010000000000 /* 2^^40 */
+#define KUSIZE_64 0x0000010000000000 /* 2^^40 */
+#define K0SIZE 0x0000001000000000 /* 2^^36 */
+#define K1SIZE 0x0000001000000000 /* 2^^36 */
+#define K2SIZE 0x000000ff80000000
+#define KSEGSIZE 0x000000ff80000000 /* max syssegsz */
+#define TO_PHYS_MASK 0x0000000fffffffff /* 2^^36 - 1 */
+#endif
+
+#if defined (CONFIG_CPU_R8000)
+/* We keep KUSIZE consistent with R4000 for now (2^^40) instead of (2^^48) */
+#define KUSIZE 0x0000010000000000 /* 2^^40 */
+#define KUSIZE_64 0x0000010000000000 /* 2^^40 */
+#define K0SIZE 0x0000010000000000 /* 2^^40 */
+#define K1SIZE 0x0000010000000000 /* 2^^40 */
+#define K2SIZE 0x0001000000000000
+#define KSEGSIZE 0x0000010000000000 /* max syssegsz */
+#define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */
+#endif
+
+#if defined (CONFIG_CPU_R10000)
+#define KUSIZE 0x0000010000000000 /* 2^^40 */
+#define KUSIZE_64 0x0000010000000000 /* 2^^40 */
+#define K0SIZE 0x0000010000000000 /* 2^^40 */
+#define K1SIZE 0x0000010000000000 /* 2^^40 */
+#define K2SIZE 0x00000fff80000000
+#define KSEGSIZE 0x00000fff80000000 /* max syssegsz */
+#define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */
+#endif
+
+/*
+ * Further names for SGI source compatibility. These are stolen from
+ * IRIX's <sys/mips_addrspace.h>.
+ */
+#define KUBASE 0
+#define KUSIZE_32 0x0000000080000000 /* KUSIZE
+ for a 32 bit proc */
+#define K0BASE_EXL_WR 0xa800000000000000 /* exclusive on write */
+#define K0BASE_NONCOH 0x9800000000000000 /* noncoherent */
+#define K0BASE_EXL 0xa000000000000000 /* exclusive */
+
+#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 0xffffffffa0000000
+#define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
+
+#endif
+
+#define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK)
+#define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE)
+
+#endif /* _ASM_ADDRSPACE_H */