Ignore:
Timestamp:
Mar 17, 2015, 1:14:17 PM (10 years ago)
Author:
krille_n_@…
google:author:
krille_n_@hotmail.com
Message:

Changes:

  • Size optimizations to the QD Vision code.
Location:
trunk/XTIDE_Universal_BIOS/Src/Initialization/AdvancedAta
Files:
2 edited

Legend:

Unmodified
Added
Removed

  • trunk/XTIDE_Universal_BIOS/Src/Initialization/AdvancedAta/AdvAtaInit.asm

    r568 r582  
    5656;       AL:     Max supported PIO mode
    5757;       AH:     FLGH_DPT_IORDY if IORDY supported, zero otherwise
    58 ;       BX:     Min PIO cycle time (only if CF set)
    59 ;       CF:     Set if PIO limit necessary
     58;       BX:     Min PIO cycle time (only if ZF set)
     59;       ZF:     Set if PIO limit necessary
    6060;               Cleared if no need to limit timings
    6161;   Corrupts registers:
    62 ;       (AX if CF cleared)
     62;       Nothing
    6363;--------------------------------------------------------------------
    6464AdvAtaInit_GetControllerMaxPioModeToALandMinPioCycleTimeToBX    equ Vision_GetMaxPioModeToALandMinCycleTimeToBX

  • trunk/XTIDE_Universal_BIOS/Src/Initialization/AdvancedAta/Vision.asm

    r566 r582  
    102102    ; Check if Secondary IDE channel is enabled
    103103    push    ax
     104    push    dx
    104105    add     dx, BYTE QD6580_CONTROL_REGISTER
    105106    in      al, dx
    106     sub     dx, BYTE QD6580_CONTROL_REGISTER
    107107    test    al, FLG_QDCONTROL_SECONDARY_DISABLED_in
     108    pop     dx
    108109    pop     ax
    109110    jz      SHORT .CompareBXtoSecondaryIDE
    … …  
    131132;       AL:     Max supported PIO mode
    132133;       AH:     FLGH_DPT_IORDY if IORDY supported, zero otherwise
    133 ;       BX:     Min PIO Cycle Time (only if CF set)
    134 ;       CF:     Set if PIO limit necessary
     134;       BX:     Min PIO Cycle Time (only if ZF set)
     135;       ZF:     Set if PIO limit necessary
    135136;               Cleared if no need to limit timings
    136 ;   Corrupts registers:
    137 ;       (AX if CF cleared)
    138137;   Corrupts registers:
    139138;       Nothing
    … …  
    141140Vision_GetMaxPioModeToALandMinCycleTimeToBX:
    142141    cmp     ah, ID_QD6500 << 4
    143     clc
    144142    jne     SHORT .NoNeedToLimitForQD6580
    145143
    146144    mov     ax, 2   ; Limit to PIO 2 because QD6500 does not support IORDY
    147145    mov     bx, PIO_2_MIN_CYCLE_TIME_NS
    148     stc
    149146.NoNeedToLimitForQD6580:
    150147    ret
    … …  
    167164Vision_InitializeWithIDinAHandConfigInAL:
    168165    ; QD6580 has a Control Register that needs to be programmed
     166    cmp     ah, ID_QD6500 << 4
    169167    mov     dx, [di+DPT_ADVANCED_ATA.wControllerBasePort]
    170     cmp     ah, ID_QD6500 << 4
    171     je      SHORT .CalculateTimingForQD6500
     168    mov     bp, QD6500_MAX_ACTIVE_TIME_CLOCKS | (QD6500_MIN_ACTIVE_TIME_CLOCKS << 8)    ; Assume QD6500
     169    je      SHORT .CalculateTimingsForQD65xx
     170    mov     bp, QD6580_MAX_ACTIVE_TIME_CLOCKS | (QD6580_MIN_ACTIVE_TIME_CLOCKS << 8)    ; It's a QD6580
    172171
    173172    ; Program QD6580 Control Register (not available on QD6500) to
    174173    ; Enable or Disable Read-Ahead and Post-Write Buffer to match
    175174    ; jumper setting on the multi I/O card.
    176     xor     ax, ax
    177175    add     dx, BYTE QD6580_CONTROL_REGISTER
    178     in      al, dx                                  ; Read to get ATAPI jumper status
     176    in      al, dx                      ; Read to get ATAPI jumper status
    179177    test    al, FLG_QDCONTROL_HDONLY_in
    180     eCMOVNZ ah, FLG_QDCONTROL_NONATAPI              ; Enable Read-Ahead and Post-Write Buffers
    181     mov     al, ah
    182     or      al, MASK_QDCONTROL_FLAGS_TO_SET
     178    mov     al, MASK_QDCONTROL_FLAGS_TO_SET
     179    eCMOVNZ al, FLG_QDCONTROL_NONATAPI | MASK_QDCONTROL_FLAGS_TO_SET    ; Enable Read-Ahead and Post-Write Buffers
    183180    out     dx, al
    184     sub     dx, BYTE QD6580_CONTROL_REGISTER
     181    dec     dx                          ; Secondary Channel IDE Timing Register
    185182
    186183    ; Now we need to determine is the drive connected to the Primary or Secondary channel.
    187184    ; QD6500 has only one channel that can be Primary at 1F0h or Secondary at 170h.
    188185    ; QD6580 always has Primary channel at 1F0h. Secondary channel at 170h can be Enabled or Disabled.
    189     cmp     WORD [di+DPT.wBasePort], DEVICE_ATA_PRIMARY_PORT
    190     je      SHORT .CalculateTimingTicksForQD6580    ; Primary Channel so no need to modify DX
    191     times 2 inc dx                                  ; Secondary Channel IDE Timing Register
    192 
    193     ; QD6500 and QD6580 require slightly different calculations.
    194 .CalculateTimingTicksForQD6580:
    195     mov     bp, QD6580_MAX_ACTIVE_TIME_CLOCKS | (QD6580_MIN_ACTIVE_TIME_CLOCKS << 8)
    196     jmp     SHORT .CalculateTimingsForQD65xx
    197 
    198 .CalculateTimingForQD6500:
    199     mov     bp, QD6500_MAX_ACTIVE_TIME_CLOCKS | (QD6500_MIN_ACTIVE_TIME_CLOCKS << 8)
     186    cmp     BYTE [di+DPT.wBasePort], DEVICE_ATA_SECONDARY_PORT & 0FFh
     187    je      SHORT .CalculateTimingsForQD65xx        ; Secondary Channel so no need to modify DX
     188    dec     dx
     189    dec     dx                          ; Primary Channel IDE Timing Register
    200190
    201191    ; We need the PIO Cycle Time in CX to calculate Active and Recovery Times.
Note: See TracChangeset for help on using the changeset viewer.