Changeset 474 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS

Timestamp:

Oct 11, 2012, 5:30:15 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Drive detection now displays autodetected XT-CF port and skips slave drives for XT-CF.
• AH=1Eh no longer tries to disable 8-bit mode for memory mapped and DMA transfer modes.
• Preparations to implement DMA.

Location:

trunk/XTIDE_Universal_BIOS

Files:

• Inc/CustomDPT.inc (modified) (1 diff)
• Src/Device/IDE/IdeCommand.asm (modified) (1 diff)
• Src/Device/IDE/IdeDmaTransfer.asm (added)
• Src/Device/IDE/JrIdeTransfer.asm (modified) (1 diff)
• Src/Handlers/Int13h/AH1Eh_XTCF.asm (modified) (1 diff)
• Src/Handlers/Int13h/AH23h_HFeatures.asm (modified) (2 diffs)
• Src/Handlers/Int13h/Tools/Prepare.asm (modified) (2 diffs)
• Src/Initialization/DetectDrives.asm (modified) (3 diffs)
• Src/Initialization/DetectPrint.asm (modified) (1 diff)
• Src/Main.asm (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Inc/CustomDPT.inc

@@ -128 +128 @@
     .bSerialBaud            resb    1   ; Serial connection baud rate divisor
 endstruc
+
+; On performance critical situations we compare DPT_ATA.bDevice without checking FLGH_DPT_SERIAL_DEVICE
+; first! DPT_ATA.bDevice uses small values so there will be no problems.
+%if DPT_SERIAL.bSerialPort <> DPT_ATA.bDevice
+    %error "DPT_ATA.bDevice and DPT_SERIAL.bSerialPort must be in same offsets!"
+%endif
 %endif
 

trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeCommand.asm

@@ -179 +179 @@
 %ifdef MODULE_8BIT_IDE
     cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_DMA
-    je      SHORT 0 ; IdeDma_StartTransferWithCommandInAL
+    je      SHORT .StartDmaTransfer
     ja      SHORT JrIdeTransfer_StartWithCommandInAL    ; DEVICE_8BIT_XTCF_MEMMAP or DEVICE_8BIT_JRIDE_ISA
-%endif
     jmp     IdeTransfer_StartWithCommandInAL
+.StartDmaTransfer:
+    jmp     IdeDmaTransfer_StartWithCommandInAL
+%else
+    jmp     IdeTransfer_StartWithCommandInAL
+%endif
 
 .WaitUntilNonTransferCommandCompletes:

trunk/XTIDE_Universal_BIOS/Src/Device/IDE/JrIdeTransfer.asm

@@ -39 +39 @@
 ;       AL:     IDE command that was used to start the transfer
 ;               (all PIO read and write commands including Identify Device)
-;       ES:SI:  Ptr to normalized data buffer (SI 0...15)
+;       ES:SI:  Ptr to normalized data buffer
 ;       DS:DI:  Ptr to DPT (in RAMVARS segment)
 ;       SS:BP:  Ptr to IDEPACK

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH1Eh_XTCF.asm

@@ -111 +111 @@
     ; Set DMA Mode
     mov     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_DMA
-    jmp     AH23h_Disable8bitPioMode
+    mov     al, [di+DPT_ATA.bBlockSize]
+    jmp     AH24h_SetBlockSize  ; AH=24h limits block size if necessary
 
 .SetMemoryMappedMode:
     mov     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_MEMMAP
-    jmp     AH23h_Disable8bitPioMode
+    jmp     SHORT .Enable8bitPioMode
 
 .Set8bitPioMode:
     mov     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_PIO8
+.Enable8bitPioMode: 
     jmp     AH23h_Enable8bitPioMode
 

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH23h_HFeatures.asm

@@ -79 +79 @@
 ;--------------------------------------------------------------------
 ; AH23h_Enable8bitPioMode
-; AH23h_Disable8bitPioMode
 ;   Parameters:
 ;       DS:DI:  Ptr to DPT (in RAMVARS segment)
@@ -92 +91 @@
     mov     si, FEATURE_ENABLE_8BIT_PIO_TRANSFER_MODE
     jmp     SHORT AH23h_SetControllerFeatures
-AH23h_Disable8bitPioMode:
-    mov     si, FEATURE_DISABLE_8BIT_PIO_TRANSFER_MODE
-    jmp     SHORT AH23h_SetControllerFeatures
 %endif ; MODULE_8BIT_IDE

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Tools/Prepare.asm

@@ -82 +82 @@
 ;   Parameters:
 ;       AL:     Number of sectors to transfer
+;       DS:DI:  Ptr to DPT (in RAMVARS segment)
 ;       SS:BP:  Ptr to IDEPACK
 ;   Parameters on INTPACK:
@@ -93 +94 @@
 ALIGN JUMP_ALIGN
 Prepare_BufferToESSIforOldInt13hTransfer:
-    ; Normalize buffer pointer
+    cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_DMA
+    jne     SHORT .NormalizeForSmallestPossibleOffset
+
+    ; Normalize segment for physical 64k pages
+    xor     bx, bx
+    mov     si, [bp+IDEPACK.intpack+INTPACK.es] ; Load segment
+%rep 4
+    shl     si, 1
+    rcl     bx, 1
+%endrep
+    add     si, [bp+IDEPACK.intpack+INTPACK.bx]
+    adc     bx, BYTE 0
+    mov     es, bx                              ; ES:SI now has physical address
+    jmp     SHORT Prepare_ByValidatingSectorsInALforOldInt13h
+
+    ; Normalize segment for 16b pages
+.NormalizeForSmallestPossibleOffset:
     mov     bx, [bp+IDEPACK.intpack+INTPACK.bx] ; Load offset
     mov     si, bx

trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectDrives.asm

@@ -153 +153 @@
 ;--------------------------------------------------------------------
 StartDetectionWithDriveSelectByteInBHandStringInCX:
-    call    DetectPrint_StartDetectWithMasterOrSlaveStringInCXandIdeVarsInCSBP
-%ifdef MODULE_HOTKEYS
-    call    HotkeyBar_UpdateDuringDriveDetection
-%endif
-    ; Fall to .AutodetectXTCFport or .ReadAtaInfoFromHardDisk
-
-
+    ; Autodetect port for XT-CF
 %ifdef MODULE_8BIT_IDE
-;--------------------------------------------------------------------
-; .AutodetectXTCFport
-;   Parameters:
-;       BH:     Drive Select byte for Drive and Head Register
-;       CS:BP:  Ptr to IDEVARS for the drive
-;       DS:     RAMVARS segment
-;       ES:     Zero (BDA segment)
-;   Returns:
-;       DX:     Autodetected port (for devices that support autodetection)
-;   Corrupts registers:
-;       AX
-;--------------------------------------------------------------------
-.AutodetectXTCFport:
-    ; Detect port for XTCF
     call    DetectDrives_DoesIdevarsInCSBPbelongToXTCF
     jne     SHORT .SkipXTCFportDetection
+
+    ; XT-CF do not support slave drives so skip detection
+    test    bh, FLG_DRVNHEAD_DRV
+    jnz     SHORT NoSlaveDriveAvailable
 
     ; XT-CF do not support slave drives so we can safely update port
@@ -183 +167 @@
     call    BootVars_GetNextXTCFportToDetectToDX
     cmp     dx, XTCF_BASE_PORT_4
-    ja      SHORT DetectDrives_DriveNotFound    ; XT-CF not found from any port
+    ja      SHORT .SkipXTCFportDetection        ; XT-CF not found from any port
 
     call    AH1Eh_DetectXTCFwithBasePortInDX
     jc      SHORT .DetectNextPort               ; XT-CF not found from this port
+
+    ; We now have autodetected port in DX
+    push    dx
+    xchg    ax, dx                              ; Port to print in AX
+    call    DetectPrint_StartDetectWithAutodetectedBasePortInAXandIdeVarsInCSBP
+    jmp     SHORT .DriveDetectionStringPrintedOnScreen
+
+    ; Print detect string for devices that do not support autodetection     
 .SkipXTCFportDetection:
+    push    dx
+%endif ; MODULE_8BIT_IDE
+
+    call    DetectPrint_StartDetectWithMasterOrSlaveStringInCXandIdeVarsInCSBP
+.DriveDetectionStringPrintedOnScreen:
+%ifdef MODULE_HOTKEYS
+    call    HotkeyBar_UpdateDuringDriveDetection
+%endif
+%ifdef MODULE_8BIT_IDE
+    pop     dx
+%endif
     ; Fall to .ReadAtaInfoFromHardDisk
-%endif ; MODULE_8BIT_IDE
 
 
@@ -284 +286 @@
     cmp     al, DEVICE_8BIT_XTCF_MEMMAP
 .DeviceIsXTCF:
+NoSlaveDriveAvailable:
     ret
 %endif ; MODULE_8BIT_IDE

trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm

@@ -75 +75 @@
 ;       CS:CX:  Ptr to "Master" or "Slave" string
 ;       CS:BP:  Ptr to IDEVARS
-;       SI:     Ptr to template string
-;   Returns:
-;       Nothing
-;   Corrupts registers:
-;       AX, SI, DI, CX, DX
+;   Returns:
+;       Nothing
+;   Corrupts registers:
+;       AX, CX, DX, SI, DI
 ;--------------------------------------------------------------------
 DetectPrint_StartDetectWithMasterOrSlaveStringInCXandIdeVarsInCSBP:
     mov     ax, [cs:bp+IDEVARS.wBasePort]   ; for IDE: AX=port address, DH=.bDevice
+    ; Fall to DetectPrint_StartDetectWithAutodetectedBasePortInAX
+
+;--------------------------------------------------------------------
+; DetectPrint_StartDetectWithAutodetectedBasePortInAXandIdeVarsInCSBP
+;   Parameters:
+;       AX:     Base Port Address
+;       CS:CX:  Ptr to "Master" or "Slave" string
+;       CS:BP:  Ptr to IDEVARS
+;   Returns:
+;       Nothing
+;   Corrupts registers:
+;       AX, CX, DX, SI, DI
+;--------------------------------------------------------------------   
+DetectPrint_StartDetectWithAutodetectedBasePortInAXandIdeVarsInCSBP:
     mov     dx, [cs:bp+IDEVARS.bDevice-1]   ; for Serial: AL=port address>>2, AH=baud rate
                                             ;             DL=COM number character, DH=.bDevice
-
     push    bp                              ; setup stack for call to
     mov     bp, sp                          ; BootMenuPrint_FormatCSSIfromParamsInSSBP

trunk/XTIDE_Universal_BIOS/Src/Main.asm

@@ -229 +229 @@
 %ifdef MODULE_8BIT_IDE
     %include "JrIdeTransfer.asm"    ; Must be included after IdeCommand.asm
+    %include "IdeDmaTransfer.asm"
 %endif
     %include "IdeTransfer.asm"