source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/Controllers/Vision.inc@ 365

; Project name  :   XTIDE Universal BIOS
; Description   :   QDI Vision QD6500 and QD6580 VLB IDE controller
;                   specifications.
;
;                   Specifications can be found at http://www.ryston.cz/petr/vlb/vlbidechips.html
;                   QD6580 DOS Driver Analysis: http://www.ryston.cz/petr/qd/dos37.html
%ifndef VISION_INC
%define VISION_INC

; Possible base addresses for QD6500 and QD6580
QD65XX_BASE_PORT                    EQU     30h
QD65XX_ALTERNATIVE_BASE_PORT        EQU     0B0h


; Vision Register offsets from QD chip base port
QD6500_IDE_TIMING_REGISTER              EQU 0
QD6580_PRIMARY_IDE_TIMING_REGISTER      EQU 0       ; QD6500 has only one channel
QD65XX_CONFIG_REGISTER_in               EQU 1
QD6580_SECONDARY_IDE_TIMING_REGISTER    EQU 2       ; Same definitions as Primary IDE Timing Register
QD6580_CONTROL_REGISTER                 EQU 3


; Bit definitions for QD65xx IDE Timing Register(s)
MASK_QD6500IDE_ACTIVE_TIME              EQU 7h      ; Active time in VLB clocks (bits 0...2)
                                                    ; 000b = 8 clocks (<= 33 MHz), 9 clocks (>33 MHz)
                                                    ; 111b = 1 clock (<= 33 MHz), 2 clocks (>33 MHz)
MASK_QD6580IDE_ACTIVE_TIME              EQU 0Fh     ; Active time in VLB clocks (bits 0...3)
                                                    ; 0000b = 17 clocks, 1111b = 2 clocks

MASK_QD6500IDE_RECOVERY_TIME            EQU 0F0h    ; Recovery time in VLB clocks (bits 4...7)
                                                    ; 0000b = 18 clocks (<= 33 MHz), 15 clocks (>33 MHz)
                                                    ; 1111b = 3 clocks (<= 33 MHz), 0 clocks (>33 MHz)
MASK_QD6580IDE_RECOVERY_TIME            EQU MASK_QD6500IDE_RECOVERY_TIME
                                                    ; 0000b = 15 clocks, 1101b = 2 clocks
POSITON_QD65XXIDE_RECOVERY_TIME         EQU 4


; Bit definitions for QD65xx Config Register (read only)
FLG_QDCONFIG_PRIMARY_IDE                EQU (1<<0)  ; IDE Controller Base Address
                                                    ; 0 = 170h, 1 = 1F0h
FLG_QDCONFIG_ALTERNATIVE_BASE           EQU (1<<1)  ; QD Vision Controller Base Address
                                                    ; 0 = 30h, 1 = B0h
FLG_QDCONFIG_ID3                        EQU (1<<2)  ; VLB bus speed
                                                    ; 0 = > 33 MHz, 1 = <= 33 MHz
FLG_QDCONFIG_QD6500STATUS               EQU (1<<3)  ; QD6500 Enabled/Disabled status
                                                    ; 0 = Enabled, 1 = Disabled
MASK_QDCONFIG_CONTROLLER_ID             EQU 0F0h    ; QDI Vision Controller Identification nibble

; QDI Vision Controller Identification nibbles
ID_QD6500                               EQU 1100b
ID_QD6580                               EQU 1010b
ID_QD6580_ALTERNATE                     EQU 0101b


; Bit definitions for QD6580 Control Register
FLG_QDCONTROL_SECONDARY_DISABLED_in     EQU (1<<0)  ; 0 = Primary and Secondary IDE enabled (Primary at 1F0h and Secondary at 170h)
                                                    ; 1 = Only Primary IDE enabled (always at 1F0h)
FLG_QDCONTROL_HDONLY_in                 EQU (1<<1)  ; 0 = Hard drive or ATAPI device
                                                    ; 1 = Hard drives only
FLG_QDCONTROL_NONATAPI                  EQU (1<<7)  ; Set to 1 for non-ATAPI devices (hard drives,
                                                    ; probably Read ahead and/or post-write control?)
MASK_QDCONTROL_FLAGS_TO_SET         EQU 01011111b   ; Bits that must be set when writing the Control Register



; Minimum and Maximum Active and Recovery Time Values
QD6500_MAX_ACTIVE_TIME_CLOCKS           EQU 8       ; VLB clocks
QD6500_MIN_ACTIVE_TIME_CLOCKS           EQU 1       ; VLB clocks
QD6580_MAX_ACTIVE_TIME_CLOCKS           EQU 17      ; VLB clocks
QD6580_MIN_ACTIVE_TIME_CLOCKS           EQU 2       ; VLB clocks
QD65xx_MAX_RECOVERY_TIME_CLOCKS         EQU 15      ; VLB clocks
QD65xx_MIN_RECOVERY_TIME_CLOCKS         EQU 2       ; VLB clocks


; Cycle times for different VLB bus clocks
VLB_33MHZ_CYCLE_TIME                    EQU 30      ; ns
VLB_40MHZ_CYCLE_TIME                    EQU 25      ; ns


%endif ; VISION_INC