Changeset 541 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers

Timestamp:

Apr 14, 2013, 5:04:32 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Brought back compatible DPTs.

Location:

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS

Files:

• AH41h_CheckIfExtensionsPresent.asm (modified) (3 diffs)
• AH48h_GetExtendedDriveParameters.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH41h_CheckIfExtensionsPresent.asm

@@ -44 +44 @@
     mov     WORD [bp+IDEPACK.intpack+INTPACK.bx], 0AA55h
 
-%ifdef RETURN_DPTE_ON_AH48H
+%ifdef CREATE_COMPATIBLE_DPT
     call    AH41h_GetSupportBitsToCX
     mov     [bp+IDEPACK.intpack+INTPACK.cx], cx
@@ -57 +57 @@
 
 
-%ifdef RETURN_DPTE_ON_AH48H
+%ifdef CREATE_COMPATIBLE_DPT
 ;--------------------------------------------------------------------
 ; AH41h_GetSupportBitsToCX
@@ -87 +87 @@
     ret
 
-%endif ; RETURN_DPTE_ON_AH48H
+%endif ; CREATE_COMPATIBLE_DPT

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH48h_GetExtendedDriveParameters.asm

@@ -84 +84 @@
 
     ; Create DPTE (hardware information for device drivers)
-%ifdef RETURN_DPTE_ON_AH48H
+%ifdef CREATE_COMPATIBLE_DPT
     call    AH41h_GetSupportBitsToCX
     test    cl, ENHANCED_DISK_DRIVE_SUPPORT
     jz      SHORT .DoNotCreateDPTE
-    call    CreateDeviceParameterTableExtensionToESBXfromDPTinDSSI
+    call    CompatibleDPT_CreateDeviceParameterTableExtensionToESBXfromDPTinDSSI
 .DoNotCreateDPTE:
 %endif
@@ -110 +110 @@
     ; Store DPTE for standard controllers only,
     ; FFFF:FFFF for non standard controllers
-%ifdef RETURN_DPTE_ON_AH48H
+%ifdef CREATE_COMPATIBLE_DPT
     mov     [di+EDRIVE_INFO.fpDPTE], bx
     mov     [di+EDRIVE_INFO.fpDPTE+2], es
@@ -161 +161 @@
 .ReturnWithError:
     jmp     Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
-
-
-%ifdef RETURN_DPTE_ON_AH48H
-;--------------------------------------------------------------------
-; CreateDeviceParameterTableExtensionToESBXfromDPTinDSSI
-;   Parameters:
-;       DS:SI:  Ptr to DPT (in RAMVARS segment)
-;       ES:     RAMVARS segment
-;   Returns:
-;       ES:BX:  Ptr to Device Parameter Table Extension (DPTE)
-;   Corrupts registers:
-;       AX, CX, DX, DI
-;--------------------------------------------------------------------
-CreateDeviceParameterTableExtensionToESBXfromDPTinDSSI:
-    ; Point ES:DI to DPTE buffer (valid until next AH=48h call)
-    mov     di, [cs:ROMVARS.bStealSize]
-    eSHL_IM di, 10                          ; DI = RAMVARS size in bytes
-    sub     di, BYTE DPTE_size              ; DI = Offset to DPTE
-    xor     dx, dx                          ; Clear for checksum
-
-    ; Set 32-bit flag for 32-bit controllers
-    mov     cx, FLG_LBA_TRANSLATION_ENABLED ; DPTE.wFlags
-    cmp     BYTE [si+DPT_ATA.bDevice], DEVICE_32BIT_ATA
-    eCMOVE  cl, FLG_LBA_TRANSLATION_ENABLED | FLG_32BIT_XFER_MODE
-
-    ; DPTE.wBasePort
-    mov     ax, [si+DPT.wBasePort]
-    call    StoswThenAddALandAHtoDL         ; Bytes 0 and 1
-
-    ; DPTE.wControlBlockPort
-    eMOVZX  bx, BYTE [si+DPT.bIdevarsOffset]
-    mov     ax, [cs:bx+IDEVARS.wControlBlockPort]
-    call    StoswThenAddALandAHtoDL         ; Bytes 2 and 3
-
-    ; DPTE.bDrvnhead and DPTE.bBiosVendor
-    xchg    di, si
-    call    AccessDPT_GetDriveSelectByteForEbiosToAL
-    xchg    si, di
-    call    StoswThenAddALandAHtoDL         ; Bytes 4 and 5
-
-    ; DPTE.bIRQ and DPTE.bBlockSize
-    mov     al, [cs:bx+IDEVARS.bIRQ]        ; No way to define that we might not use IRQ
-    mov     ah, [si+DPT_ATA.bBlockSize]
-    cmp     ah, 1
-    jbe     SHORT .DoNotSetBlockModeFlag
-    or      cl, FLG_BLOCK_MODE_ENABLED
-.DoNotSetBlockModeFlag:
-    call    StoswThenAddALandAHtoDL         ; Bytes 6 and 7
-
-    ; DPTE.bDmaChannelAndType and DPTE.bPioMode
-    xor     ax, ax
-%ifdef MODULE_ADVANCED_ATA
-    or      ah, [si+DPT_ADVANCED_ATA.bPioMode]
-    jz      SHORT .NoDotSetFastPioFlag
-    cmp     WORD [si+DPT_ADVANCED_ATA.wControllerID], BYTE 0
-    je      SHORT .NoDotSetFastPioFlag
-    inc     cx      ; FLG_FAST_PIO_ENABLED
-.NoDotSetFastPioFlag:
-%endif
-    call    StoswThenAddALandAHtoDL         ; Bytes 8 and 9
-
-    ; Set CHS translation flags and store DPTE.wFlags
-    mov     al, [si+DPT.bFlagsLow]
-    and     al, MASKL_DPT_TRANSLATEMODE
-    jz      SHORT .NoChsTranslationOrBitShiftTranslationSet
-    or      cl, FLG_CHS_TRANSLATION_ENABLED
-    test    al, FLGL_DPT_ASSISTED_LBA
-    jz      SHORT .NoChsTranslationOrBitShiftTranslationSet
-    or      cx, LBA_ASSISTED_TRANSLATION << TRANSLATION_TYPE_FIELD_POSITION
-.NoChsTranslationOrBitShiftTranslationSet:
-    xchg    ax, cx
-    call    StoswThenAddALandAHtoDL         ; Bytes 10 and 11
-
-    ; DPTE.wReserved (must be zero)
-    xor     ax, ax
-    call    StoswThenAddALandAHtoDL         ; Bytes 12 and 13
-
-    ; DPTE.bRevision and DPTE.bChecksum
-    mov     ax, DPTE_REVISION | (DPTE_REVISION<<8)
-    add     ah, dl
-    neg     ah
-    stosw
-    lea     bx, [di-DPTE_size]
-    ret
-
-
-;--------------------------------------------------------------------
-; StoswThenAddALandAHtoDL
-;   Parameters:
-;       AX:     WORD to store
-;       ES:DI:  Ptr to where to store AX
-;       DL:     Checksum byte
-;   Returns:
-;       DL:     Checksum byte
-;       DI:     Incremented by 2
-;   Corrupts registers:
-;       Nothing
-;--------------------------------------------------------------------
-StoswThenAddALandAHtoDL:
-    stosw
-    add     dl, al
-    add     dl, ah
-    ret
-
-%endif ; RETURN_DPTE_ON_AH48H