171 lines
4.6 KiB
C
171 lines
4.6 KiB
C
/* mmuPro36Lib.h - mmuPro36Lib header for i86. */
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/* Copyright 1984-2002, 2010 Wind River Systems, Inc. */
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/*
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modification history
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--------------------
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01g,29apr10,pad Moved extern C statement after include statements.
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01f,07apr04,scm Ported to Base6 ...
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01e,12jun02,hdn added arch specific VM library APIs' prototype
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01d,06jun02,hdn replaced PAGE_SIZE with PD_SIZE and PT_SIZE
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01c,22aug01,hdn moved GDT and GDT_ENTRIES to regsI86.h
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01b,13may98,hdn added _ASMLANGUAGE macro.
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01a,11apr97,hdn written.
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*/
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#ifndef __INCmmuPro36Libh
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#define __INCmmuPro36Libh
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#include "arch/i86/pentiumLib.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define PAGE_SIZE_4KB 0x1000
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#define PAGE_SIZE_2MB 0x200000
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#define PAGE_BLOCK_SIZE 0x200000
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#define N_PTPTRS 4
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#define N_PTES 512
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#define N_PDES 512
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#define DIR_PTR_BITS 0xc0000000
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#define DIR_BITS 0x3fe00000
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#define TBL_BITS 0x001ff000
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#define OFFSET_BITS_4KB 0x00000fff
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#define OFFSET_BITS_2MB 0x001fffff
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#define DIR_PTR_BITS 0xc0000000
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#define DIR_BITS 0x3fe00000
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#define TBL_BITS 0x001ff000
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#define DIR_PTR_INDEX 30
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#define DIR_INDEX 21
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#define TBL_INDEX 12
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#define PTE_TO_ADDR_4KB 0xfffff000
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#define PTE_TO_ADDR_2MB 0xffe00000
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#define PDP_TO_ADDR 0xfffff000
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#define PTE_INVALID PTE_TO_ADDR_4KB
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#define PDE_INVALID PTE_INVALID
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#define ADDR_TO_PAGE 12
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#define ADDR_TO_PAGEBASE 0xffe00000
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#ifndef _ASMLANGUAGE
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typedef struct
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{
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unsigned present:1;
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unsigned rw:1;
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unsigned us:1;
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unsigned pwt:1;
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unsigned pcd:1;
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unsigned access:1;
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unsigned dirty:1;
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unsigned pagesize:1;
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unsigned global:1;
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unsigned avail:3;
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unsigned page:20;
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unsigned page36:4;
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unsigned reserved:28;
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} PTE_FIELD;
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typedef union pte
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{
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PTE_FIELD field;
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UINT bits[2];
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} PTE;
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typedef struct mmuTransTblStruct
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{
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PTE * pDirectoryPtrTable; /* pointer to dir ptr tbl */
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INT32 pageSize; /* 4K, 2M */
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} MMU_TRANS_TBL;
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#define MMU_STATE_MASK_VALID 0x001
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#define MMU_STATE_MASK_WRITABLE 0x002
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#define MMU_STATE_MASK_USER 0x004
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#define MMU_STATE_MASK_PROTECTION 0x006
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#define MMU_STATE_MASK_WRITETHROUGH 0x008
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#define MMU_STATE_MASK_WBACK 0x008
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#define MMU_STATE_MASK_CACHEABLE 0x018 /* 0x018 was 0x10 in AE version */
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#define MMU_STATE_MASK_GLOBAL 0x100
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#define MMU_STATE_MASK_STATE 0x11f
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#define MMU_STATE_VALID 0x001
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#define MMU_STATE_VALID_NOT 0x000
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#define MMU_STATE_WRITABLE 0x002
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#define MMU_STATE_WRITABLE_NOT 0x000
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#define MMU_STATE_USER 0x004
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#define MMU_STATE_USER_NOT 0x000
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#define MMU_STATE_WRITETHROUGH 0x008
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#define MMU_STATE_WBACK 0x000
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#define MMU_STATE_COPYBACK 0x000
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#define MMU_STATE_CACHEABLE_NOT 0x018 /* 0x18 was 0x10 in AE version */
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#define MMU_STATE_WBACK_NOT MMU_STATE_CACHEABLE_NOT
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#define MMU_STATE_CACHEABLE 0x000
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#define MMU_STATE_GLOBAL 0x100
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#define MMU_STATE_GLOBAL_NOT 0x000
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#define MMU_STATE_SUP_RO (MMU_STATE_USER_NOT | MMU_STATE_WRITABLE_NOT) /* 0x0 */
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#define MMU_STATE_USR_RO (MMU_STATE_USER | MMU_STATE_WRITABLE_NOT) /* 0x4 */
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#define MMU_STATE_SUP_RW (MMU_STATE_USER_NOT | MMU_STATE_WRITABLE) /* 0x2 */
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#define MMU_STATE_USR_RW (MMU_STATE_USER | MMU_STATE_WRITABLE) /* 0x6 */
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/* wpOff is used to temporarily override supervisor write-protection.
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* When using wpOff, interrupts should
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* be locked because this disables write-protection system wide!
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* Before unlocking interrupts, be sure to do a wpOn().
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*/
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#define wpOff() vxCr0Set (vxCr0Get() & 0xfffeffff)
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#define wpOn() vxCr0Set (vxCr0Get() | 0x00010000)
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/* function declarations */
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#if defined(__STDC__) || defined(__cplusplus)
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extern STATUS mmuPro36LibInit (int pageSize);
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extern STATUS mmuPro36Enable (BOOL enable);
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extern void mmuPro36On ();
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extern void mmuPro36Off ();
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extern void mmuPro36TLBFlush ();
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extern void mmuPro36PdbrSet (MMU_TRANS_TBL *transTbl);
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extern void mmuPro36Show (MMU_TRANS_TBL *transTbl, VIRT_ADDR vaddr);
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extern MMU_TRANS_TBL *mmuPro36PdbrGet ();
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#else /* __STDC__ */
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extern STATUS mmuPro36LibInit ();
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extern STATUS mmuPro36Enable ();
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extern void mmuPro36On ();
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extern void mmuPro36Off ();
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extern void mmuPro36TLBFlush ();
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extern void mmuPro36PdbrSet ();
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extern void mmuPro36Show ();
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extern MMU_TRANS_TBL *mmuPro36PdbrGet ();
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#endif /* __STDC__ */
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCmmuPro36Libh */
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