Source code of Windows XP (NT5)
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; Copyright (c) Microsoft Corporation 1989-1991. All Rights Reserved.
;******************************************************************************;; Title: smartdrv.inc - smartdrv equates & structures;; Version: 1.00;; Date: 15-Sep-1989;; Author: ARR;;------------------------------------------------------------------------------;; Change log:;; DATE REV DESCRIPTION; ----------- --- -----------------------------------------------------------; 15-Sep-1989 ARR Original;;==============================================================================
;; Device name of SMARTDRV;SD_DEV_NAME equ "SMARTAAR",0
;; SMARTDRV cache type (XMS or EMS) -- SD_IR_Driver_Type field;
SD_CACHE_XMS equ 1 ; Cache is in XMSSD_CACHE_EMS equ 2 ; Cache is in EMS
;; Structure of the data returned on the SMARTDRV IOCTL read call;SD_IOCTL_Read struc
SD_IR_Write_Through db ? ; Write-through flag, currently always 1 SD_IR_Write_Buff db ? ; Buffer write flag, currently always 0 SD_IR_Enable_Int13 db ? ; Cache enable flag, 1 = enabled SD_IR_Driver_Type db ? ; Type 1 (XMS cache) or 2 (EMS cache) SD_IR_Tick_Setting dw ? ; Ticks between flushes, currently unused SD_IR_Lock_Cache db ? ; Non-zero if cache is locked SD_IR_Reboot_Flush db ? ; Non-zero if cache should be flushed on reboot SD_IR_Cache_All db ? ; Zero if full track writes are not cached db ? ; Unused SD_IR_Original_INT13 dd ? ; INT 13 address SMARTDRV hooked SD_IR_Version dw ? ; SMARTDrive version, packed BCD dw ? ; Unused ; Next three values are used for computing ; cache statistics. They may be scaled rather ; than absolute values SD_IR_Total_Sec_Read dw ? ; Count of sectors read SD_IR_Cache_Sec_Read dw ? ; Count of sectors read from cache SD_IR_Track_Sec_Read dw ? ; Count of sectors read from track buffer ; Cache statistics SD_IR_Cache_Hit_Ratio db ? ; = Cache_Sec_Read * 100 / Total_Sec_Read SD_IR_Track_Hit_Ratio db ? ; = Track_Sec_Read * 100 / Total_Sec_Read
SD_IR_Total_Tracks dw ? ; Number of tracks in the cache SD_IR_Total_Used dw ? ; Tracks currently in use SD_IR_Total_Locked dw ? ; Tracks currently locked SD_IR_Total_Dirty dw ? ; Tracks currently dirty ; Information for resizing cache ; All values are in terms of 16Kb pages. SD_IR_Current_Size dw ? ; Current size of the cache, in 16Kb pages SD_IR_Dev_Size dw ? ; Original size requested by user SD_IR_Min_Cache_Size dw ? ; Minimum allowable size
SD_IOCTL_Read ends;; IOCTL Write functions; The function is encoded in the first byte of the IOCTL write data;SD_IOCTL_WR_Flush equ 0 ; Flush the cacheSD_IOCTL_WR_Flush_Invalidate equ 1 ; Flush the cache and discard itSD_IOCTL_WR_Disable_Cache equ 2 ; Turn caching offSD_IOCTL_WR_Enable_Cache equ 3 ; Turn caching on
SD_IOCTL_WR_Set_Tick equ 5 ; Set tick count for flushSD_IOCTL_WR_Lock equ 6 ; Lock current cache contentsSD_IOCTL_WR_Unlock equ 7 ; Unlock current cache contentsSD_IOCTL_WR_Reboot_Flush equ 8 ; Set Reboot_Flush flag
SD_IOCTL_WR_Shrink_Cache equ 11 ; Reduce cache sizeSD_IOCTL_WR_Grow_Cache equ 12 ; Increase cache sizeSD_IOCTL_WR_Set_INT_13 equ 13 ; Set the address SMARTDRV ; chains to on INT 13s;; Structures for the IOCTL write calls;; These calls do not take any parameters so the correct write count is 1; (the function code byte);; WR_Flush; WR_Flush_Invalidate; WR_Disable_Cache; WR_Enable_Cache; WR_Set_Tick; WR_Lock; WR_Unlock;SD_IOCTL_WR_NoParm struc
SD_I_W_Func db ?
SD_IOCTL_WR_NoParm ends;; WR_Reboot_Flush;SD_IOCTL_WR_Reboot struc
SD_I_W_FuncR db SD_IOCTL_WR_Reboot_Flush SD_I_W_RebootFlg db ? ; 0 to turn reboot flush off ; 1 to turn reboot flush onSD_IOCTL_WR_Reboot ends;; WR_Shrink_Cache; WR_Grow_Cache;SD_IOCTL_WR_GrwShrk struc
SD_I_W_FuncGS db ? ; Function, one of: ; SD_IOCTL_WR_Shrink_Cache ; SD_IOCTL_WR_Grow_Cache SD_I_W_GS_Size dw ? ; Count of 16k "pages" to ; grow or shrink cache by ; THIS IS A SIZE DELTA ; not a total size.SD_IOCTL_WR_GrwShrk ends;; WR_Set_INT_13;SD_IOCTL_WR_SetI13 struc
SD_I_W_FuncS13 db SD_IOCTL_WR_Set_INT_13
SD_I_W_S13_Addr dd ? ; Segment:Offset address ; to set Original_INT13 to. ; NO RECORD IS KEPT OF PREV ; VALUE, caller's responsible ; for save and restore.SD_IOCTL_WR_SetI13 ends
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