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%OUT DEVSYM.INC...
; SCCSID = @(#)DEVSYM.ASM 1.10 85/09/04
; SCCSID = @(#)DEVSYM.ASM 1.10 85/09/04
; THE DEVICE TABLE LIST HAS THE FORM:
SYSDEV STRUC
SDEVNEXT DD ? ;POINTER TO NEXT DEVICE HEADER
SDEVATT DW ? ;ATTRIBUTES OF THE DEVICE
SDEVSTRAT DW ? ;STRATEGY ENTRY POINT
SDEVINT DW ? ;INTERRUPT ENTRY POINT
SDEVNAME DB 8 DUP (?) ;NAME OF DEVICE (ONLY FIRST BYTE USED FOR BLOCK)
SYSDEV ENDS
;
; ATTRIBUTE BIT MASKS
;
; CHARACTER DEVICES:
;
; BIT 15 -> MUST BE 1
; 14 -> 1 IF THE DEVICE UNDERSTANDS IOCTL CONTROL STRINGS
; 13 -> 1 IF THE DEVICE SUPPORTS OUTPUT-UNTIL-BUSY
; 12 -> UNUSED
; 11 -> 1 IF THE DEVICE UNDERSTANDS OPEN/CLOSE
; 10 -> MUST BE 0
; 9 -> MUST BE 0
; 8 -> UNUSED
; 7 -> UNUSED
; 6 -> UNUSED
; 5 -> UNUSED
; 4 -> 1 IF DEVICE IS RECIPIENT OF INT 29H
; 3 -> 1 IF DEVICE IS CLOCK DEVICE
; 2 -> 1 IF DEVICE IS NULL DEVICE
; 1 -> 1 IF DEVICE IS CONSOLE OUTPUT
; 0 -> 1 IF DEVICE IS CONSOLE INPUT
;
; BLOCK DEVICES:
;
; BIT 15 -> MUST BE 0
; 14 -> 1 IF THE DEVICE UNDERSTANDS IOCTL CONTROL STRINGS
; 13 -> 1 IF THE DEVICE DETERMINES MEDIA BY EXAMINING THE FAT ID BYTE.
; THIS REQUIRES THE FIRST SECTOR OF THE FAT TO *ALWAYS* RESIDE IN
; THE SAME PLACE.
; 12 -> UNUSED
; 11 -> 1 IF THE DEVICE UNDERSTANDS OPEN/CLOSE/REMOVABLE MEDIA
; 10 -> MUST BE 0
; 9 -> MUST BE 0
; 8 -> UNUSED
; 7 -> UNUSED
; 6 -> IF DEVICE HAS SUPPORT FOR GETMAP/SETMAP OF LOGICAL DRIVES.
; IF THE DEVICE UNDERSTANDS GENERIC IOCTL FUNCTION CALLS.
; 5 -> UNUSED
; 4 -> UNUSED
; 3 -> UNUSED
; 2 -> UNUSED
; 1 -> UNUSED
; 0 -> UNUSED
;
DEVTYP EQU 8000H ; BIT 15 - 1 IF CHAR, 0 IF BLOCK
CHARDEV EQU 8000H
DEVIOCTL EQU 4000H ; BIT 14 - CONTROL MODE BIT
ISFATBYDEV EQU 2000H ; BIT 13 - DEVICE USES FAT ID BYTES,
; COMP MEDIA.
OUTTILBUSY EQU 2000H ; OUTPUT UNTIL BUSY IS ENABLED
ISNET EQU 1000H ; BIT 12 - 1 IF A NET DEVICE, 0 IF
; NOT. CURRENTLY BLOCK ONLY.
DEVOPCL EQU 0800H ; BIT 11 - 1 IF THIS DEVICE HAS
; OPEN,CLOSE AND REMOVABLE MEDIA
; ENTRY POINTS, 0 IF NOT
EXTENTBIT EQU 0400H ; BIT 10 - CURRENTLY 0 ON ALL DEVS
; THIS BIT IS RESERVED FOR FUTURE USE
; TO EXTEND THE DEVICE HEADER BEYOND
; ITS CURRENT FORM.
; NOTE BIT 9 IS CURRENTLY USED ON IBM SYSTEMS TO INDICATE "DRIVE IS SHARED".
; SEE IOCTL FUNCTION 9. THIS USE IS NOT DOCUMENTED, IT IS USED BY SOME
; OF THE UTILITIES WHICH ARE SUPPOSED TO FAIL ON SHARED DRIVES ON SERVER
; MACHINES (FORMAT,CHKDSK,RECOVER,..).
DEV320 EQU 0040H ;BIT 6 - FOR BLOCK DEVICES, THIS
;DEVICE SUPPORTS SET/GET MAP OF
;LOGICAL DRIVES, AND SUPPORTS
;GENERIC IOCTL CALLS.
;FOR CHARACTER DEVICES, THIS
;DEVICE SUPPORTS GENERIC IOCTL.
;THIS IS A DOS 3.2 DEVICE DRIVER.
ISSPEC EQU 0010H ;BIT 4 - THIS DEVICE IS SPECIAL
ISCLOCK EQU 0008H ;BIT 3 - THIS DEVICE IS THE CLOCK DEVICE.
ISNULL EQU 0004H ;BIT 2 - THIS DEVICE IS THE NULL DEVICE.
ISCOUT EQU 0002H ;BIT 1 - THIS DEVICE IS THE CONSOLE OUTPUT.
ISCIN EQU 0001H ;BIT 0 - THIS DEVICE IS THE CONSOLE INPUT.
EXTDRVR EQU 0002H ;BIT 1 - BLOCK DEVICE EXTNDED DRIVER
;STATIC REQUEST HEADER
SRHEAD STRUC
REQLEN DB ? ;LENGTH IN BYTES OF REQUEST BLOCK
REQUNIT DB ? ;DEVICE UNIT NUMBER
REQFUNC DB ? ;TYPE OF REQUEST
REQSTAT DW ? ;STATUS WORD
DB 8 DUP(?) ;RESERVED FOR QUEUE LINKS
SRHEAD ENDS
;STATUS WORD MASKS
STERR EQU 8000H ;BIT 15 - ERROR
STBUI EQU 0200H ;BIT 9 - BUISY
STDON EQU 0100H ;BIT 8 - DONE
STECODE EQU 00FFH ;ERROR CODE
; 2/12/KK
; Interim character identifier 2/12/KK
Ddkey EQU 0000010000000000B ; 2/12/KK
;FUNCTION CODES
DEVINIT EQU 0 ;INITIALIZATION
DINITHL EQU 26 ;SIZE OF INIT HEADER
DEVMDCH EQU 1 ;MEDIA CHECK
DMEDHL EQU 15 ;SIZE OF MEDIA CHECK HEADER
DEVBPB EQU 2 ;GET BPB
DEVRDIOCTL EQU 3 ;IOCTL READ
DBPBHL EQU 22 ;SIZE OF GET BPB HEADER
DEVRD EQU 4 ;READ
DRDWRHL EQU 22 ;SIZE OF RD/WR HEADER
DEVRDND EQU 5 ;NON DESTRUCTIVE READ NO WAIT (CHARACTER DEVS)
DRDNDHL EQU 14 ;SIZE OF NON DESTRUCTIVE READ HEADER
DEVIST EQU 6 ;INPUT STATUS
DSTATHL EQU 13 ;SIZE OF STATUS HEADER
DEVIFL EQU 7 ;INPUT FLUSH
DFLSHL EQU 15 ;SIZE OF FLUSH HEADER
DEVWRT EQU 8 ;WRITE
DEVWRTV EQU 9 ;WRITE WITH VERIFY
DEVOST EQU 10 ;OUTPUT STATUS
DEVOFL EQU 11 ;OUTPUT FLUSH
DEVWRIOCTL EQU 12 ;IOCTL WRITE
DEVOPN EQU 13 ;DEVICE OPEN
DEVCLS EQU 14 ;DEVICE CLOSE
DOPCLHL EQU 13 ;SIZE OF OPEN/CLOSE HEADER
DEVRMD EQU 15 ;REMOVABLE MEDIA
REMHL EQU 13 ;SIZE OF REMOVABLE MEDIA HEADER
GENIOCTL EQU 19
; THE NEXT THREE ARE USED IN DOS 4.0
; 20
; 21
; 22
DEVGETOWN EQU 23 ;GET DEVICE OWNER
DEVSETOWN EQU 24 ;SET DEVICE OWNER
OWNHL EQU 13 ;SIZE OF DEVICE OWNER HEADER
DEVOUT EQU 16 ; OUTPUT UNTIL BUSY.
DEVOUTL EQU DEVWRT ; LENGTH OF OUTPUT UNTIL BUSY
; GENERIC IOCTL REQUEST STRUCTURE
; SEE THE DOS 4.0 DEVICE DRIVER SPEC FOR FURTHER ELABORATION.
;
IOCTL_REQ STRUC
DB (SIZE SRHEAD) DUP(?)
; GENERIC IOCTL ADDITION.
MAJORFUNCTION DB ? ;FUNCTION CODE
MINORFUNCTION DB ? ;FUNCTION CATEGORY
REG_SI DW ?
REG_DI DW ?
GENERICIOCTL_PACKET DD ? ; POINTER TO DATA BUFFER
IOCTL_REQ ENDS
; DEFINITIONS FOR IOCTL_REQ.MINORFUNCTION
GEN_IOCTL_WRT_TRK EQU 40H
GEN_IOCTL_RD_TRK EQU 60H
GEN_IOCTL_FN_TST EQU 20H ; USED TO DIFF. BET READS AND WRTS
;; 32-bit absolute read/write input list structure
ABS_32RW STRUC
SECTOR_RBA DD ? ; relative block address
ABS_RW_COUNT DW ? ; number of sectors to be transferred
BUFFER_ADDR DD ? ; data addrress
ABS_32RW ENDS
;; media ID info
MEDIA_ID_INFO STRUC
MEDIA_level DW 0 ; info level
MEDIA_Serial DD 0 ; serial #
MEDIA_Label DB 11 dup (' ') ;volume label
MEDIA_System DB 8 dup (' ') ;system type
MEDIA_ID_INFO ENDS
;; equates for DOS34_FLAG
IFS_ABSRW EQU 00001H ;IFS absolute read/write
NO_IFS_ABSRW EQU 0FFFEH ;no IFS absolute read/write
IFS_DRIVE_RESET EQU 00002H ;IFS drvive reset
NO_IFS_DRIVE_RESET EQU 0FFFDH ;no IFS drive reset
FROM_DISK_RESET EQU 00004H ;from disk reset
NO_FROM_DISK_RESET EQU 0FFFBH ;not from disk reset
From_String_Output EQU 00008H ;from con string output
NO_From_String_Output EQU 0FFF7H ;not from con string output
From_DOS_WRITE EQU 00010H ;from dos_write
NO_From_DOS_WRITE EQU 0FFEFH ;not from dos_write
Force_I24_Fail EQU 00020H ;form IFS CALL BACK
NO_Force_I24_Fail EQU 0FFDFH ;not form IFS CALL BACK
Disable_EOF_I24 EQU 00040H ;disable EOF int24 for input status
NO_Disable_EOF_I24 EQU 0FFBFH ;disable EOF int24 for input status
DBCS_VOLID EQU 00080H ;indicate from volume id
DBCS_VOLID2 EQU 00100H ;indicate 8th char is DBCS
CTRL_BREAK_FLAG EQU 00200H ;indicate control break is input
NO_CTRL_BREAK_FLAG EQU 0FDFFH ;reset control break
SEARCH_FASTOPEN EQU 00400H ;set fastopen flag for search
X25_special EQU 00800H ;flag for X25 driver
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