original files of m241

vxworks-6.9/target/h/arch/i86/mmuI86Lib.h

@@ -0,0 +1,149 @@
+/* mmuI86Lib.h - mmuI86Lib header for i86. */
+
+/* Copyright 1984-2003 Wind River Systems, Inc. */
+
+/*
+modification history
+--------------------
+01g,24jun04,zmm  Ported from mmuPro32Lib.h version 01f to P5 MMU.
+01f,12jun02,hdn  added arch specific VM library APIs' prototype
+01e,22aug01,hdn  moved GDT and GDT_ENTRIES to regsI86.h
+01d,13may98,hdn  added PAGE_SIZE_XXX and _ASMLANGUAGE macros. 
+01c,07jan95,hdn  added GDT and GDT_ENTRIES.
+01b,01nov94,hdn  added MMU_STATE_CACHEABLE_WT for Pentium.
+01a,26jul93,hdn  written based on mc68k's version.
+*/
+
+#ifndef __INCmmuI86Libh
+#define __INCmmuI86Libh
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define PAGE_SIZE		0x1000
+#define PAGE_BLOCK_SIZE		0x400000
+#define PAGE_SIZE_4KB		0x1000
+#define PAGE_SIZE_4MB         0x400000
+#define N_PTES          1024
+#define N_PDES          1024
+
+#define DIRECTORY_BITS		0xffc00000
+#define TABLE_BITS		0x003ff000
+#define OFFSET_BITS_4KB		0x00000fff
+#define DIRECTORY_INDEX		22
+#define TABLE_INDEX		12
+#define PTE_TO_ADDR_4KB		0xfffff000
+#define PTE_INVALID     	PTE_TO_ADDR_4KB
+#define PDE_INVALID     	PTE_INVALID
+
+#define ADDR_TO_PAGE		12
+#define ADDR_TO_PAGEBASE	0xffc00000
+
+#ifndef	_ASMLANGUAGE
+
+typedef struct
+    {
+    unsigned present:1;
+    unsigned rw:1;
+    unsigned us:1;
+    unsigned pwt:1;
+    unsigned pcd:1;
+    unsigned access:1;
+    unsigned dirty:1;
+    unsigned zero:2;
+    unsigned avail:3;
+    unsigned page:20;
+    } PTE_FIELD;
+
+typedef union pte
+    {
+    PTE_FIELD field;
+    unsigned int bits;
+    } PTE;
+
+typedef struct mmuTransTblStruct
+    {
+    PTE *pDirectoryTable;
+    INT32 pageSize;		/* Fixed size 4K or 4M if !mixed */
+    BOOL mixed;			/* TRUE if mixed size pages */
+    } MMU_TRANS_TBL;
+
+#define MMU_STATE_MASK_VALID		0x001
+#define MMU_STATE_MASK_WRITABLE		0x002
+#define MMU_STATE_MASK_USER		0x004
+#define MMU_STATE_MASK_PROTECTION       0x006
+
+#define MMU_STATE_MASK_WRITETHROUGH     0x008
+#define MMU_STATE_MASK_WBACK		0x008
+#define MMU_STATE_MASK_CACHEABLE	0x018  /* 0x018 was 0x10 in AE version */
+
+#define MMU_STATE_MASK_GLOBAL		0x100
+#define MMU_STATE_MASK_STATE            0x11f
+
+#define MMU_STATE_VALID			0x001
+#define MMU_STATE_VALID_NOT		0x000
+#define MMU_STATE_WRITABLE		0x002
+#define MMU_STATE_WRITABLE_NOT		0x000
+#define MMU_STATE_USER                  0x004
+#define MMU_STATE_USER_NOT              0x000
+#define MMU_STATE_WRITETHROUGH		0x008
+#define MMU_STATE_WBACK			0x000
+
+#define MMU_STATE_COPYBACK		0x000
+#define MMU_STATE_CACHEABLE_NOT		0x018  /* 0x18 was 0x10 in AE version */
+#define MMU_STATE_WBACK_NOT	MMU_STATE_CACHEABLE_NOT		
+
+#define MMU_STATE_CACHEABLE		0x000
+#define MMU_STATE_GLOBAL		0x100
+#define MMU_STATE_GLOBAL_NOT		0x000
+
+
+#define MMU_STATE_SUP_RO        (MMU_STATE_USER_NOT | MMU_STATE_WRITABLE_NOT) /* 0x0 */
+#define MMU_STATE_USR_RO        (MMU_STATE_USER     | MMU_STATE_WRITABLE_NOT) /* 0x4 */
+#define MMU_STATE_SUP_RW        (MMU_STATE_USER_NOT | MMU_STATE_WRITABLE)     /* 0x2 */
+#define MMU_STATE_USR_RW        (MMU_STATE_USER     | MMU_STATE_WRITABLE)     /* 0x6 */
+
+/* wpOff is used to temporarily override supervisor write-protection.
+ * When using wpOff, interrupts should
+ * be locked because this disables write-protection system wide!
+ * Before unlocking interrupts, be sure to do a wpOn().
+ */
+
+#define wpOff()    vxCr0Set (vxCr0Get() & 0xfffeffff)
+#define wpOn()     vxCr0Set (vxCr0Get() | 0x00010000)
+
+/* function declarations */
+
+#if defined(__STDC__) || defined(__cplusplus)
+
+extern STATUS	mmuI86LibInit (int pageSize);
+extern STATUS	mmuI86Enable (BOOL enable);
+extern void	mmuI86On ();
+extern void	mmuI86Off ();
+extern void	mmuI86TLBFlush ();
+extern void	mmuI86PdbrSet (MMU_TRANS_TBL *transTbl);
+extern void	mmuI86Show (MMU_TRANS_TBL *transTbl, void * vaddr);
+extern MMU_TRANS_TBL *mmuI86PdbrGet ();
+
+#else   /* __STDC__ */
+
+extern STATUS	mmuI86LibInit ();
+extern STATUS	mmuI86Enable ();
+extern void	mmuI86On ();
+extern void	mmuI86Off ();
+extern void	mmuI86TLBFlush ();
+extern void	mmuI86PdbrSet ();
+extern void	mmuI86Show ();
+extern MMU_TRANS_TBL *mmuI86PdbrGet ();
+
+#endif  /* __STDC__ */
+
+#endif	/* _ASMLANGUAGE */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __INCmmuI86Libh */