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00001 /*++ NDK Version: 0095
00002 
00003 Copyright (c) Alex Ionescu.  All rights reserved.
00004 
00005 Header Name:
00006 
00007     mmtypes.h (ARM)
00008 
00009 Abstract:
00010 
00011     ARM Type definitions for the Memory Manager
00012 
00013 Author:
00014 
00015     Alex Ionescu (alex.ionescu@reactos.com)   06-Oct-2004
00016 
00017 --*/
00018 
00019 #ifndef _ARM_MMTYPES_H
00020 #define _ARM_MMTYPES_H
00021 
00022 //
00023 // Dependencies
00024 //
00025 
00026 //
00027 // Page-related Macros
00028 //
00029 #ifndef PAGE_SIZE
00030 #define PAGE_SIZE                         0x1000
00031 #endif
00032 #define PAGE_SHIFT                        12L
00033 #define MM_ALLOCATION_GRANULARITY         0x10000
00034 #define MM_ALLOCATION_GRANULARITY_SHIFT   16L
00035 
00036 //
00037 // Sanity checks for Paging Macros
00038 //
00039 #ifdef C_ASSERT
00040 C_ASSERT(PAGE_SIZE == (1 << PAGE_SHIFT));
00041 C_ASSERT(MM_ALLOCATION_GRANULARITY == (1 << MM_ALLOCATION_GRANULARITY_SHIFT));
00042 C_ASSERT(MM_ALLOCATION_GRANULARITY &&
00043          !(MM_ALLOCATION_GRANULARITY & (MM_ALLOCATION_GRANULARITY - 1)));
00044 C_ASSERT(MM_ALLOCATION_GRANULARITY >= PAGE_SIZE);
00045 #endif
00046 
00047 //
00048 // Page Table Entry Definitions
00049 //
00050 typedef struct _HARDWARE_PDE_ARMV6
00051 {
00052     ULONG Valid:1;     // Only for small pages
00053     ULONG LargePage:1; // Note, if large then Valid = 0
00054     ULONG Buffered:1;
00055     ULONG Cached:1;
00056     ULONG NoExecute:1;
00057     ULONG Domain:4;
00058     ULONG Ecc:1;
00059     ULONG PageFrameNumber:22;
00060 } HARDWARE_PDE_ARMV6, *PHARDWARE_PDE_ARMV6;
00061 
00062 typedef struct _HARDWARE_LARGE_PTE_ARMV6
00063 {
00064     ULONG Valid:1;     // Only for small pages
00065     ULONG LargePage:1; // Note, if large then Valid = 0
00066     ULONG Buffered:1;
00067     ULONG Cached:1;
00068     ULONG NoExecute:1;
00069     ULONG Domain:4;
00070     ULONG Ecc:1;
00071     ULONG Sbo:1;
00072     ULONG Owner:1;
00073     ULONG CacheAttributes:3;
00074     ULONG ReadOnly:1;
00075     ULONG Shared:1;
00076     ULONG NonGlobal:1;
00077     ULONG SuperLagePage:1;
00078     ULONG Reserved:1;
00079     ULONG PageFrameNumber:12;
00080 } HARDWARE_LARGE_PTE_ARMV6, *PHARDWARE_LARGE_PTE_ARMV6;
00081 
00082 typedef struct _HARDWARE_PTE_ARMV6
00083 {
00084     ULONG NoExecute:1;
00085     ULONG Valid:1;
00086     ULONG Buffered:1;
00087     ULONG Cached:1;
00088     ULONG Sbo:1;
00089     ULONG Owner:1;
00090     ULONG CacheAttributes:3;
00091     ULONG ReadOnly:1;
00092     ULONG Shared:1;
00093     ULONG NonGlobal:1;
00094     ULONG PageFrameNumber:20;
00095 } HARDWARE_PTE_ARMV6, *PHARDWARE_PTE_ARMV6;
00096 
00097 C_ASSERT(sizeof(HARDWARE_PDE_ARMV6) == sizeof(ULONG));
00098 C_ASSERT(sizeof(HARDWARE_LARGE_PTE_ARMV6) == sizeof(ULONG));
00099 C_ASSERT(sizeof(HARDWARE_PTE_ARMV6) == sizeof(ULONG));
00100 
00101 typedef struct _MMPTE_SOFTWARE
00102 {
00103     ULONG Valid:2;
00104     ULONG PageFileLow:4;
00105     ULONG Protection:4;
00106     ULONG Prototype:1;
00107     ULONG Transition:1;
00108     ULONG PageFileHigh:20;
00109 } MMPTE_SOFTWARE;
00110 
00111 typedef struct _MMPTE_TRANSITION
00112 {
00113     ULONG Valid:2;
00114     ULONG Buffered:1;
00115     ULONG Cached:1;
00116     ULONG Owner:1;
00117     ULONG Protection:4;
00118     ULONG ReadOnly:1;
00119     ULONG Prototype:1;
00120     ULONG Transition:1;
00121     ULONG PageFrameNumber:20;
00122 } MMPTE_TRANSITION;
00123 
00124 typedef struct _MMPTE_PROTOTYPE
00125 {
00126     ULONG Valid:2;
00127     ULONG ProtoAddressLow:7;
00128     ULONG ReadOnly:1;
00129     ULONG Prototype:1;
00130     ULONG ProtoAddressHigh:21;
00131 } MMPTE_PROTOTYPE;
00132 
00133 typedef struct _MMPTE_SUBSECTION
00134 {
00135     ULONG Valid:2;
00136     ULONG SubsectionAddressLow:4;
00137     ULONG Protection:4;
00138     ULONG Prototype:1;
00139     ULONG SubsectionAddressHigh:20;
00140     ULONG WhichPool:1;
00141 } MMPTE_SUBSECTION;
00142 
00143 typedef struct _MMPTE_LIST
00144 {
00145     ULONG Valid:2;
00146     ULONG OneEntry:1;
00147     ULONG filler0:8;
00148     ULONG NextEntry:20;
00149     ULONG Prototype:1;
00150 } MMPTE_LIST;
00151 
00152 typedef union _MMPTE_HARDWARE
00153 {
00154     ULONG NoExecute:1;
00155     ULONG Valid:1;
00156     ULONG Buffered:1;
00157     ULONG Cached:1;
00158     ULONG Sbo:1;
00159     ULONG Owner:1;
00160     ULONG CacheAttributes:3;
00161     ULONG ReadOnly:1;
00162     ULONG Prototype:1;
00163     ULONG NonGlobal:1;
00164     ULONG PageFrameNumber:20;
00165 } MMPTE_HARDWARE, *PMMPTE_HARDWARE;
00166 
00167 typedef union _MMPDE_HARDWARE
00168 {
00169     ULONG Valid:1;
00170     ULONG LargePage:1;
00171     ULONG Buffered:1;
00172     ULONG Cached:1;
00173     ULONG NoExecute:1;
00174     ULONG Domain:4;
00175     ULONG Ecc:1;
00176     ULONG PageFrameNumber:22;
00177 } MMPDE_HARDWARE, *PMMPDE_HARDWARE;
00178 
00179 typedef struct _MMPDE
00180 {
00181     union 
00182     {
00183         MMPDE_HARDWARE Hard;
00184         ULONG Long;
00185     } u;
00186 } MMPDE, *PMMPDE;
00187 
00188 //
00189 // Use the right PTE structure
00190 //
00191 #define HARDWARE_PTE        HARDWARE_PTE_ARMV6
00192 #define PHARDWARE_PTE       PHARDWARE_PTE_ARMV6
00193 
00194 #endif
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