| 1 | /* $Id: OS2KVM.h,v 1.10 2001-02-11 15:02:27 bird Exp $
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| 2 | *
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| 3 | * OS/2 kernel VM functions.
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| 4 | *
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| 5 | * Copyright (c) 2000 knut st. osmundsen (knut.stange.osmundsen@mynd.no)
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| 6 | *
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| 7 | * Project Odin Software License can be found in LICENSE.TXT
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| 8 | *
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| 9 | */
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| 10 |
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| 11 |
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| 12 | #ifndef _OS2KVM_h_
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| 13 | #define _OS2KVM_h_
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| 14 |
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| 15 |
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| 16 | /*******************************************************************************
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| 17 | * Defined Constants And Macros *
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| 18 | *******************************************************************************/
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| 19 |
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| 20 | /*
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| 21 | * From SG24-4640-00
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| 22 | * Object flags. (ob_fs)
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| 23 | */
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| 24 | #define OB_PSEUDO 0x8000 /* Pseudo-object */
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| 25 | #define OB_API 0x4000 /* API allocated object */
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| 26 | #define OB_LOCKWAIT 0x2000 /* Some thread to wake in VMUnlock */
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| 27 | #define OB_LALIAS 0x1000 /* Object has aliases */
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| 28 | #define OB_SHARED 0x0800 /* Object's contents are shared */
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| 29 | #define OB_UVIRT 0x0400 /* UVirt object */
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| 30 | #define OB_ZEROINIT 0x0200 /* Object is zero-initialized */
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| 31 | #define OB_RESIDENT 0x0100 /* Initial allocation was resident */
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| 32 | #define OB_LOWMEM 0x0040 /* Object is in low memory */
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| 33 | #define OB_GUARD 0x0080 /* Page attribute/permission flags */
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| 34 | #define OB_EXEC 0x0020 /* Executable */
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| 35 | #define OB_READ 0x0010 /* Read permission */
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| 36 | #define OB_USER 0x0008 /* User Storage */
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| 37 | #define OB_WRITE 0x0004 /* Write permission */
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| 38 | #define OB_HUGE 0x0002 /* Object is huge */
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| 39 | #define OB_SHRINKABLE 0x0001 /* Object is Shrinkable */
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| 40 | #define OB_DHSETMEM 0x0001 /* DevHlp_VMSetMems are allowed */
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| 41 |
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| 42 |
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| 43 | /*
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| 44 | * From SG24-4640-00
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| 45 | * ob_xflags
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| 46 | */
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| 47 | #define VMOB_SLOCK_WAIT 0x01 /* Waiting on short term locks to clear */
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| 48 | #define VMOB_LLOCK_WAIT 0x02 /* Waiting on long term locks to clear */
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| 49 | #define VMOB_DISC_SEG 0x04 /* Object is part of a discardable seg */
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| 50 | #define VMOB_HIGHMEM 0x08 /* Object was allocated via dh_vmalloc */
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| 51 |
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| 52 |
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| 53 |
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| 54 | /* v8086.h */
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| 55 | #define VM_PG_W 0x00000002 /* VPMPG_W - Page Writeable. */
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| 56 | #define VM_PG_U 0x00000004 /* VPMPG_U - Page User Mode Accessible.*/
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| 57 | #define VM_PG_X 0x00000008 /* VPMPG_X - Page Executable. */
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| 58 | #define VM_PG_R 0x00000010 /* VPMPG_R - Page Readable. */
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| 59 | #define VM_PG_RESERVED 0x00001000 /* VPMPG_RESERVED- Reservered */
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| 60 |
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| 61 | /* vpmx2.h */
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| 62 | #define VM_PG_SWAPPABLE 0x00000000 /* Swappable */
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| 63 |
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| 64 |
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| 65 |
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| 66 | /*
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| 67 | * VMAlloc flFlag1 guessings
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| 68 | */
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| 69 | #define VMA_CONTIG 0x00000001UL /* VMDHA_CONTIG */
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| 70 | #define VMA_WRITE VM_PG_W /* PAG_WRITE and OB_WRITE */
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| 71 | #define VMA_USER VM_PG_U /* OB_USER */
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| 72 | #define VMA_EXECUTE VM_PG_X /* PAG_EXECUTE and OB_READ !! */
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| 73 | #define VMA_READ VM_PG_R /* PAG_READ and OB_EXEC !! */
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| 74 | #define VMA_LOWMEM 0x00000020UL /* OB_LOWMEM < 1MB physical */
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| 75 | #define VMA_GUARD 0x00000040UL /* PAG_GUARD and VMDHA_16M and OB_GUARD */
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| 76 | #if 0
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| 77 | #define VMA_RESIDENT 0x00000080UL /* OB_RESIDENT */
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| 78 | #define VMA_ZEROINIT 0x00000100UL /* OB_ZEROINIT */
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| 79 | #define VMA_PHYS 0x00000200UL /* VMDHA_PHYS */
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| 80 | #define VMA_FIXED 0x00000400UL /* VMDHA_FIXED and OB_SHARED */
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| 81 | #else
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| 82 | #define VMA_ZEROFILL 0x00000080UL
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| 83 | #define VMA_SWAPONWRITE 0x00000100UL
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| 84 | #define VMA_UVIRT 0x00000200UL /* VMDHA_PHYS */
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| 85 | #define VMA_RESIDENT 0x00000400UL /* VMDHA_FIXED and OB_SHARED */
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| 86 | #endif
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| 87 | #define VMA_DISCARDABLE 0x00000800UL /* discarable object */
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| 88 | #define VMA_SHARE 0x00001000UL /* OBJSHARE and OBJEXEC (which implies shared) */
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| 89 | #define VMA_PROTECTED 0x00004000UL /* PAG_PROTECTED */
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| 90 | #define VMA_LOWMEM2 0x00010000UL /* OB_LOWMEM */
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| 91 | #define VMA_VDM 0x00040000UL /* (VPMVMAC_VDM) VDM allocation */
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| 92 | #define VMA_DECOMMIT 0x00080000UL /* PAG_DECOMMIT */
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| 93 | #define VMA_TILE 0x00400000UL /* OBJ_TILE */
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| 94 | #define VMA_SELALLOC 0x00400000UL /* Allocates selector */
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| 95 | #define VMA_SHRINKABLE 0x00800000UL /* OB_SHRINKABLE */
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| 96 | #define VMA_HUGH 0x01000000UL /* OB_HUGH */
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| 97 |
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| 98 | #define VMA_ARENASHARED 0x04000000UL /* Shared Arena */
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| 99 | #define VMA_ARENASYSTEM 0x00000000UL /* System Arena */
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| 100 | #define VMA_ARENAPRIVATE 0x02000000UL /* (VPMVMAC_ARENAPRV) Private Arena */
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| 101 | #define VMA_ARENAHEAP 0x06000000UL /* Heap Arena */
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| 102 | #define VMA_ARENAHIGHA 0x00008000UL /* High shared arena (Warp >= fp13) */
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| 103 | #define VMA_ARENAHIGH (options.ulBuild >= AURORAGA ? VMA_ARENAHIGHA : 0UL)
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| 104 | #define VMA_ARENAMASKW 0x06000000UL /* Warp < fp13 Arena Mask */
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| 105 | #define VMA_ARENAMASKA 0x06008000UL /* Aurora Arena Mask */
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| 106 | #define VMA_ARENAMASK (options.ulBuild >= AURORAGA ? VMA_ARENAMASKA : VMA_ARENAMASKW)
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| 107 |
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| 108 | #define VMA_ALIGNSEL 0x10000000UL /* Selector aligment */
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| 109 | #define VMA_ALIGNPAGE 0x18000000UL /* (VPMVMAC_ALIGNPAGE) Page alignment */
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| 110 |
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| 111 | #define VMA_LOCMASK 0xC0000000UL /* Location mask */
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| 112 | #define VMA_LOCSPECIFIC 0x80000000UL /* (VPMVMAC_LOCSPECIFIC) Specific location */
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| 113 | #define VMA_LOCABOVE 0x40000000UL /* (VPMVMAC_LOCABOVE) Above or equal to specified location */
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| 114 | #define VMA_LOCANY 0x00000000UL /* Anywhere */
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| 115 |
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| 116 |
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| 117 |
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| 118 | /*
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| 119 | * VMAlloc flFlags2 guessings
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| 120 | */
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| 121 | #if 0 /*???*/
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| 122 | #define VDHAM_FIXED 0x0000UL
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| 123 | #define VDHAM_SWAPPABLE 0x0001UL
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| 124 | #define VPMVMFM_VDM 0x00000004UL /* Request on behalf of VDM */
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| 125 | #endif
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| 126 |
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| 127 | #define VMAF2_WRITE 0x00000002UL /* PAG_WRITE */
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| 128 |
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| 129 |
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| 130 | /*
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| 131 | * VMMapDebugAlias flags.
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| 132 | */
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| 133 | #define VMMDA_ARENAPRIVATE 0 /* Create alias in private arena */
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| 134 | #define VMMDA_ARENASYSTEM 4 /* Create alias in system arena */
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| 135 | #define VMMDA_READONLY 1 /* Create readonly alias */
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| 136 |
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| 137 |
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| 138 | /*
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| 139 | * vmRecalcShrBound flags.
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| 140 | */
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| 141 | #define VMRSBF_ARENASHR 0 /* Queries for the Shared Arena. */
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| 142 | #define VMRSBF_ARENAHIGH 4 /* Queries for the High Shared Arena. */
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| 143 | #define VMRSBF_UPDATE 1 /* Seems to update the Sentinel Arena Record. */
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| 144 |
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| 145 |
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| 146 | /*
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| 147 | * Arena Header flags as defined in SG24-4640-00.
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| 148 | */
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| 149 | #define VMAH_BITMAP_BYPASS 0x00000001 /* Worth bypassing bitmap */
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| 150 | #define VMAH_NO_HASH_WRAP 0x00000002 /* No hash table wraparound yet */
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| 151 | #define VMAH_GROW_DOWN 0x00000004 /* Arena grows down */
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| 152 |
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| 153 |
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| 154 | /*******************************************************************************
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| 155 | * Structures and Typedefs *
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| 156 | *******************************************************************************/
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| 157 |
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| 158 | /*
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| 159 | * Handle to Memory Object.
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| 160 | */
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| 161 | typedef USHORT VMHOB;
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| 162 |
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| 163 | /*
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| 164 | * Handle to Arena Record.
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| 165 | */
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| 166 | typedef VMHOB VMHAR;
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| 167 |
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| 168 |
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| 169 | /*
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| 170 | * VMAllocMem struct - found in SDFs.
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| 171 | */
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| 172 | typedef struct _vmac
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| 173 | {
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| 174 | ULONG ac_va; /* off=0 cb=4 Virtual Address. */
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| 175 | USHORT ac_sel; /* off=4 cb=2 Selector. */
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| 176 | USHORT ac_hob; /* off=6 cb=2 Object handle. */
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| 177 | } VMAC, *PVMAC;
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| 178 |
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| 179 |
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| 180 | /*
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| 181 | * Dummy structs we need pointers for.
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| 182 | */
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| 183 | typedef PVOID PVMAR;
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| 184 | typedef PVOID PVMBM;
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| 185 | typedef PVOID PVMHAR;
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| 186 | typedef PVOID PVMAT;
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| 187 |
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| 188 |
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| 189 | /*
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| 190 | * Arena Header structure as defined in SG24-4640-00 and all SDF files.
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| 191 | */
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| 192 | typedef struct vmah_s
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| 193 | {
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| 194 | struct vmah_s * ah_pahNext; /* Link to next arena. */
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| 195 | struct vmah_s * ah_pahPrev; /* Link to previous arena. */
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| 196 | PVMAR ah_parSen; /* Pointer to the arena sentinel. */
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| 197 | PVMAR ah_parFree; /* Hint of 1st free block in arena. */
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| 198 | PVMBM ah_papbm; /* Pointer to bitmap directory. */
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| 199 | PVMHAR ah_paharHash;/*Hash table pointer. */
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| 200 | PVMAT ah_pat; /* Pointer to per-type info. */
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| 201 | ULONG ah_fl; /* Flags. */
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| 202 | ULONG ah_laddrMin;/* Minimum address currently mapped. */
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| 203 | ULONG ah_laddrMax;/* Maximum address currently mapped. */
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| 204 | ULONG ah_car; /* Count of arena entries. */
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| 205 | ULONG ah_carBitmap;/*Max entry count to need bitmap. */
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| 206 | ULONG ah_lbmNumbMax; /* Max bitmap number */
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| 207 | ULONG ah_lbmeNumbMax; /* Max bitmap entry number */
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| 208 | ULONG ah_lHashNumbMax;/* Max hash table index. */
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| 209 | VMHOB ah_hob; /* Arena header pseudo-handle. */
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| 210 | USHORT ah_filler; /* Filler to 4-byte align struct. */
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| 211 | } VMAH, *PVMAH;
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| 212 |
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| 213 |
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| 214 | /*******************************************************************************
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| 215 | * Global Variables *
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| 216 | *******************************************************************************/
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| 217 | /**
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| 218 | * Virtual Address Limit - this pointer might be NULL!
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| 219 | */
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| 220 | extern ULONG *pVirtualAddressLimit;
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| 221 | #define VirtualAddressLimit (pVirtualAddressLimit ? *pVirtualAddressLimit : 0x20000000)
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| 222 |
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| 223 | /**
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| 224 | * System arena header.
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| 225 | */
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| 226 | extern PVMAH pahvmSys;
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| 227 | #define ahvmSys (*pahvmSys)
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| 228 |
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| 229 | /**
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| 230 | * Shared arena header.
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| 231 | */
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| 232 | extern PVMAH pahvmShr;
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| 233 | #define ahvmShr (*pahvmShr)
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| 234 |
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| 235 | /**
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| 236 | * High Shread arena header - only aurora and Warp Server Advanced SMP.
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| 237 | */
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| 238 | extern PVMAH pahvmhShr;
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| 239 | #define ahvmhShr (*pahvmhShr)
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| 240 |
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| 241 |
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| 242 | /*******************************************************************************
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| 243 | * Exported Functions *
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| 244 | *******************************************************************************/
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| 245 | HMTE KRNLCALL VMGetOwner(
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| 246 | ULONG ulCS,
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| 247 | ULONG ulEIP);
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| 248 |
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| 249 | APIRET KRNLCALL VMAllocMem(
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| 250 | ULONG cbSize,
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| 251 | ULONG cbCommit,
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| 252 | ULONG flFlags1,
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| 253 | HPTDA hPTDA,
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| 254 | USHORT usVMOwnerId,
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| 255 | HMTE hMTE,
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| 256 | ULONG flFlags2,
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| 257 | ULONG SomeArg2,
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| 258 | PVMAC pvmac);
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| 259 |
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| 260 | APIRET KRNLCALL VMFreeMem(
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| 261 | ULONG ulAddress,
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| 262 | HPTDA hPTDA,
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| 263 | ULONG flFlags);
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| 264 |
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| 265 | APIRET KRNLCALL VMMapDebugAlias(
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| 266 | ULONG flVMFlags,
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| 267 | ULONG ulAddress,
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| 268 | ULONG cbSize,
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| 269 | HPTDA hPTDA,
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| 270 | PVMAC pvmac);
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| 271 |
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| 272 | APIRET KRNLCALL VMObjHandleInfo(
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| 273 | USHORT usHob,
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| 274 | PULONG pulAddr,
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| 275 | PUSHORT pushPTDA);
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| 276 |
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| 277 | #ifdef _OS2KLDR_H_
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| 278 | PMTE KRNLCALL VMPseudoHandleMap(
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| 279 | HMTE hMTE);
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| 280 | #endif
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| 281 |
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| 282 | /**
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| 283 | * This function seems to find the top of the private arena.
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| 284 | * And for high arena kernels (AURORA and W3SMP?) it is modified
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| 285 | * to calc the top of the high private arena, given flFlag = 4.
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| 286 | * --
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| 287 | * This function is really intented for resizing / recaling the size of
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| 288 | * the shared arena(s). But, it's useful for finding the highest used
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| 289 | * private arena(s).
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| 290 | * @param flFlags VMRSBF_* flags.
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| 291 | * @param pulSentinelAddress Pointer to return variable (optional).
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| 292 | */
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| 293 | VOID KRNLCALL vmRecalcShrBound(
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| 294 | ULONG flFlags,
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| 295 | PULONG pulSentinelAddress);
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| 296 |
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| 297 |
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| 298 | #endif
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