;******************************************************************************
;
; (C) Copyright MICROSOFT Corp., 1990
;
; Title: BLOCKDEV.INC -- Services and equates for BlockDev VxD
;
; Version: 3.10
;
; Date: 23-Aug-1990
;
; Author: RAL
;
;------------------------------------------------------------------------------
;
; Change log:
;
; DATE REV DESCRIPTION
; ----------- --- -----------------------------------------------------------
; 23-Aug-1990 RAL Original
;
;==============================================================================
;
; Service Declarations
;
Begin_Service_Table BlockDev
BlockDev_Service BlockDev_Get_Version, LOCAL
BlockDev_Service BlockDev_Register_Device, LOCAL
BlockDev_Service BlockDev_Find_Int13_Drive, LOCAL
BlockDev_Service BlockDev_Get_Device_List, LOCAL
BlockDev_Service BlockDev_Send_Command, LOCAL
BlockDev_Service BlockDev_Command_Complete, LOCAL
BlockDev_Service BlockDev_Synchronous_Command, LOCAL
End_Service_Table BlockDev
;
; Block Device Desctiptor data structrue
;
BD_Priv_Data_Size EQU 30h
BD_Major_Version EQU 3
BD_Minor_Version EQU 0Ah
BlockDev_Device_Descriptor STRUC
BDD_Next dd ?
BDD_BD_Major_Ver db BD_Major_Version
BDD_BD_Minor_Ver db BD_Minor_Version
BDD_Device_Type db ?
BDD_Int_13h_Number db ?
BDD_Flags dd ?
BDD_Name_Ptr dd ?
BDD_Max_Sector dq ?
BDD_Sector_Size dd ?
BDD_Num_Heads dd ?
BDD_Num_Cylinders dd ?
BDD_Num_Sec_Per_Track dd ?
BDD_Sync_Cmd_Proc dd ?
BDD_Command_Proc dd ?
BDD_Hw_Int_Proc dd 0
BDD_Reserved_BlockDev db BD_Priv_Data_Size dup (?)
BlockDev_Device_Descriptor ENDS
;
; Flags for BDD_Flags field
;
BDF_Int13_Drive EQU 00000001b
BDF_Int13_Drive_Bit EQU 0
BDF_Writeable EQU 00000010b
BDF_Writeable_Bit EQU 1
BDF_Removable EQU 00000100b
BDF_Removable_Bit EQU 2
BDF_Remote EQU 00001000b
BDF_Remote_Bit EQU 3
BDF_Serial_Cmd EQU 00010000b
BDF_Serial_Cmd_Bit EQU 4
BDF_Cache EQU 00100000b
BDF_Cache_Bit EQU 5
;
; Device types for BDD_Device_Type field
;
BDT_360K_5_Inch_Floppy EQU 00h
BDT_1200K_5_Inch_Floppy EQU 01h
BDT_720K_3_Inch_Floppy EQU 02h
BDT_Single_Dens_8_Inch EQU 03h
BDT_Double_Dens_8_Inch EQU 04h
BDT_Fixed_Disk EQU 05h
BDT_Tape_Drive EQU 06h
BDT_Other EQU 07h
;
; Command Block for Block Devices
;
BlockDev_Command_Block STRUC
BD_CB_Next dd ?
BD_CB_Command dw ?
BD_CB_Cmd_Status dw ?
BD_CB_Flags dd ?
BD_CB_Cmd_Cplt_Proc dd ?
BD_CB_Sector dq ?
BD_CB_Count dd ?
BD_CB_Buffer_Ptr dd ?
BD_CB_Reserved_Client dd ?
BD_CB_Reserved_BlockDev dd ?
BD_CB_Reserved_FastDisk dd ?
BlockDev_Command_Block ENDS
;
; Commands
; NOTE: Commands 8000h-FFFFh are reserved for device specific commands
;
BDC_Read EQU 0
BDC_Write EQU 1
BDC_Verify EQU 2
BDC_Cancel EQU 3
;
; Equates for command status. All codes below 10h imply successful completion
; Error code value are > 10h
;
BDS_Success EQU 0 ; Completed successfully
BDS_Success_With_Retries EQU 1 ; Completed successfully after retries
BDS_Success_With_ECC EQU 2 ; Successful after error correction
BDS_First_Error_Code EQU 10h ; first error code value
BDS_Invalid_Sector_Number EQU 10h ; Invalid sector number
BDS_Canceled EQU 11h ; Command was canceled
BDS_Cmd_In_Progress EQU 12h ; Can't cancel cmd in progress
BDS_Invalid_Cmd_Ptr EQU 13h ; Cancel of invalid cmd pointer
BDS_Media_Error EQU 14h ; Read/Write failed
BDS_Device_Error EQU 15h ; Device/Adapter failed
BDS_Invalid_Command EQU 16h
;
; Flags for commands
;
BDCF_High_Priority EQU 00000001b
BDCF_High_Priority_Bit EQU 0
BDCF_Scatter_Gather EQU 00000010b
BDCF_Scatter_Gather_Bit EQU 1
BDCF_Dont_Cache EQU 00000100b
BDCF_Dont_Cache_Bit EQU 2
;
; Equates for synchronous commands
;
BD_SC_Get_Version EQU 0000h
;
; Equates for error returns from synchronous command
;
BD_SC_Err_Invalid_Cmd EQU 0001h
;
; Value specified in CX register when API call-out Int 2Fh executed
; The Hw_Detect_Start and End APIs are used by block devices to notify
; TSR and DOS device driver software that they are performing hardware
; detection. This may, for example, disable a write-behind cache.
;
BlockDev_API_Hw_Detect_Start EQU 0001h
BlockDev_API_Hw_Detect_End EQU 0002h
;
; The Int13_Chain_Check API is executed by Int 13h block devices to check
; to see if the software that has hooked DOS's ROM BIOS int 13h address
; is aware of BlockDev and it is OK to load block device drivers. If it
; is OK for block devices such as WDCTRL to load even though the DOS Int 13h
; chain has been modified, the hook code should zero the CX register and
; iret from this call.
;
BlockDev_API_Int13_Chain_Check EQU 0003h
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