Changeset 545 in xtideuniversalbios


Ignore:
Timestamp:
Apr 19, 2013, 11:44:35 AM (8 years ago)
Author:
aitotat@…
google:author:
aitotat@gmail.com
Message:

Changes to XTIDE Universal BIOS:

  • Integrated XT-CFv3 support by James Pearce.
  • XT-CFv2 memory mapped I/O and DMA modes are no longer supported (but PIO mode is).
Location:
trunk/XTIDE_Universal_BIOS
Files:
20 edited

Legend:

Unmodified
Added
Removed
  • trunk/XTIDE_Universal_BIOS/Inc/BootVars.inc

    r528 r545  
    4040    .rgbMnuStack:
    4141    .dwPostStack        resb    4       ; POST stack pointer when entering INT 19h
    42 
    43 %ifdef MODULE_8BIT_IDE_ADVANCED
    44     .wNextXTCFportToScan    resb    2   ; Needed for XT-CF port autodetection
    45 %endif
    4642%ifdef MODULE_HOTKEYS
    4743    .hotkeyVars             resb    HOTKEYVARS_size
  • trunk/XTIDE_Universal_BIOS/Inc/Controllers/XTCF.inc

    r526 r545  
    22; Description   :   Lo-tech XT-CFv2 board specifications.
    33;
    4 ;                   More information at http://www.lo-tech.co.uk/wiki/Lo-tech_XT-CFv2_Board
     4; More information at http://www.lo-tech.co.uk/XT-CF
    55
    66;
     
    2020;
    2121
     22; Modified by JJP for XT-CFv3 support, Mar-13
     23
     24
    2225%ifndef XTCF_INC
    2326%define XTCF_INC
    2427
    25 DEFAULT_XTCF_SECTOR_WINDOW_SEGMENT  EQU     0D800h
    26 
    27 ; XT-CF requires that block must be less than 128 sectors (64 kiB).
    28 ; Instead of limiting block size to 64, we limit it to 32 (16 kiB).
    29 ; Transferring more than 16 kiB with 8237 DMA controller block or demand
    30 ; mode might interfere with DRAM refresh on XT systems.
    31 XTCF_DMA_MODE_MAX_BLOCK_SIZE        EQU     32      ; Sectors
     28; XT-CF requires that block must be less than 128 sectors (64 kiB) for DMA
     29; transfers.
     30;
     31; Note: XT-CFv3 DMA will not interfere with PC & PC/XT memory refresh,
     32; since the XT-CFv3 detaches itself from the bus every 16 bytes transferred.
     33;
     34XTCF_DMA_MODE_MAX_BLOCK_SIZE        EQU     64      ; Sectors
    3235
    3336; Possible base addresses. Note that all XT-CF IDE registers are SHL 1 compared
    3437; to standard IDE registers.
    35 XTCF_BASE_PORT_DETECTION_SEED       EQU     140h    ; Not a valid base address but needed for autodetection
    3638XTCF_BASE_PORT_1                    EQU     200h
    3739XTCF_BASE_PORT_2                    EQU     240h
     
    4143
    4244; XT-CF Control Register (do not SHL 1 these!)
    43 XTCF_CONTROL_REGISTER               EQU     1Fh
    44 XTCF_CONTROL_REGISTER_INVERTED_in   EQU     1Eh
     45; Note: XT-CFv3 control register is used *only* to raise DRQ.  The register cannot be read.
     46;
     47XTCF_CONTROL_REGISTER               EQU     1Eh
    4548
    46 ; Control Register contents:
     49; Transfer Mode Constants
    4750;
    48 ; Control Register holds high byte from Sector Window segment if >= A0h
    49 ; (First possible segment for Sector Window is A000h)
     51; Available transfer modes depend on the controller.  All XT-CF controllers
     52; support 8-bit PIO, either with 8-bit or 16-bit instructions (i.e., data
     53; can be fetched from the controller with REP INSW or REP INSB since A0 is
     54; not decoded).  However, errors in the implementation of the BIU on some
     55; machines will prevent 16-bit instructions delivering data correctly.
    5056;
    51 ; 8-bit PIO transfers (port I/O) are used if Control Register is zero.
    52 ; Any other value means DMA transfers (using DMA channel 3).
    53 XTCF_8BIT_PIO_MODE                      EQU     0
    54 XTCF_DMA_MODE                           EQU     10h
    55 XTCF_MEMORY_MAPPED_MODE                 EQU     0A0h
    56 RAISE_DRQ_AND_CLEAR_XTCF_XFER_COUNTER   EQU     40h
    57 
    58 
     57; For XT-CFv3 adapter, DMA transfers are also supported via channel 3.
     58;
     59; XT-CFv3 cannot be distinguised by software, so user must decide and set
     60; the mode via a call to Int 13h function 1Eh accordingly (see AH1E_XTCF.asm).
     61;;
     62XTCF_8BIT_PIO_MODE                  EQU     00h
     63XTCF_8BIT_PIO_MODE_WITH_BIU_OFFLOAD EQU     01h
     64XTCF_DMA_MODE                       EQU     02h
    5965
    6066; Subcommands for AH=1Eh, Lo-tech XT-CF features.
     
    7278
    7379;--------------------------------------------------------------------
    74 ; READ_XTCF_CONTROL_REGISTER_TO_DH
     80; SET_XTCF_TRANSFER_MODE
     81;   Parameters:
     82;       DH:     Mode to select,
     83;                               i.e. XTCF_8BIT_PIO_MODE
     84;               Note there's no way to know if an
     85;               XT-CF adapter supports DMA, so the
     86;               user should enable DMA only if a
     87;               DMA-enabled XT-CFv3 is fitted.
     88;       DL:     Drive Number
     89;--------------------------------------------------------------------
     90SET_XTCF_TRANSFER_MODE              EQU     1
     91
     92;--------------------------------------------------------------------
     93; GET_XTCF_TRANSFER_MODE
    7594;   Parameters:
    7695;       DL:     Drive Number
    7796;   Returns:
    78 ;       DH:     XT-CF Control Register contents
     97;       DL:     Block mode sectors per block
     98;               configured
     99;       DH:     One of the mode values listed above,
     100;                               i.e. XTCF_8BIT_PIO_MODE
    79101;--------------------------------------------------------------------
    80 READ_XTCF_CONTROL_REGISTER_TO_DH    EQU     1
    81 
    82 ;--------------------------------------------------------------------
    83 ; WRITE_DH_TO_XTCF_CONTROL_REGISTER
    84 ;   Parameters:
    85 ;       DH:     Byte to write to XT-CF Control Register
    86 ;       DL:     Drive Number
    87 ;--------------------------------------------------------------------
    88 WRITE_DH_TO_XTCF_CONTROL_REGISTER   EQU     2
     102GET_XTCF_TRANSFER_MODE              EQU     2
    89103
    90104
  • trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc

    r542 r545  
    9999;;; Word 1
    100100    .wControlBlockPort:
    101     .bXTCFcontrolRegister:                  ; XT-CF autodetects ports
    102101    .bSerialUnused              resb    1   ; IDE Base Port for Control Block Registers
    103102
     
    121120
    122121STANDARD_CONTROL_BLOCK_OFFSET           EQU     200h
    123 XTIDE_CONTROL_BLOCK_OFFSET              EQU     8h
    124 XTCF_CONTROL_BLOCK_OFFSET               EQU     10h
     122XTIDE_CONTROL_BLOCK_OFFSET              EQU     8h      ; for XTIDE, A3 is used to control selected register (CS0 vs CS1)...
     123XTCF_CONTROL_BLOCK_OFFSET               EQU     10h     ; ...and for XT-CF (all varients), it's A4
    125124ADP50L_CONTROL_BLOCK_OFFSET             EQU     10h
    126125
    127126; Default values for Port and PortCtrl, shared with the configurator
    128127;
    129 DEVICE_XTIDE_DEFAULT_PORT               EQU     300h
     128DEVICE_XTIDE_DEFAULT_PORT               EQU     300h    ; Also the default port for XT-CF
    130129DEVICE_XTIDE_DEFAULT_PORTCTRL           EQU     (DEVICE_XTIDE_DEFAULT_PORT + XTIDE_CONTROL_BLOCK_OFFSET)
     130; Note XT-CF control port is SHL 1 relative to XTIDE, and coded that way hence no need for specific definition like...
     131; DEVICE_XTCF_DEFAULT_PORTCTRL              EQU     (DEVICE_XTIDE_DEFAULT_PORT + XTCF_CONTROL_BLOCK_OFFSET)
    131132
    132133DEVICE_ATA_PRIMARY_PORT                 EQU     1F0h
     
    158159; IDE Register offsets are SHL 1
    159160DEVICE_8BIT_XTCF_PIO8                   EQU ((COUNT_OF_STANDARD_IDE_DEVICES+3)<<1)  ; XT-CF using 8-bit PIO mode
    160 DEVICE_8BIT_XTCF_DMA                    EQU ((COUNT_OF_STANDARD_IDE_DEVICES+4)<<1)  ; XT-CF using DMA
    161 DEVICE_8BIT_XTCF_MEMMAP                 EQU ((COUNT_OF_STANDARD_IDE_DEVICES+5)<<1)  ; XT-CF using Memory Mapped transfers (not I/O)
     161DEVICE_8BIT_XTCF_PIO8_WITH_BIU_OFFLOAD  EQU ((COUNT_OF_STANDARD_IDE_DEVICES+4)<<1)  ; XT-CF using 8-bit PIO mode, but with 16-bit instructions
     162DEVICE_8BIT_XTCF_DMA                    EQU ((COUNT_OF_STANDARD_IDE_DEVICES+5)<<1)  ; XT-CFv3 using DMA
    162163; Memory Mapped I/O
    163164DEVICE_8BIT_JRIDE_ISA                   EQU ((COUNT_OF_STANDARD_IDE_DEVICES+6)<<1)  ; JR-IDE/ISA (Memory Mapped I/O)
     
    196197    MAX_USER_CHS_COUNT              EQU (MAX_USER_CYLINDERS * MAX_USER_HEADS * MAX_USER_SECTORS_PER_TRACK)
    197198FLG_DRVPARAMS_USERLBA           EQU (1<<6)  ; User specified LBA value
    198     MIN_USER_LBA_COUNT              EQU (MAX_USER_CHS_COUNT+1)
    199     MAX_USER_LBA_COUNT              EQU ((2^28)-1)
    200 
     199    MIN_USER_LBA_COUNT              EQU (MAX_USER_CHS_COUNT+1)  ; Must be more than max CHS
     200    MAX_USER_LBA_COUNT              EQU ((2^28)-1)              ; LBA28 limit
    201201
    202202%endif ; ROMVARS_INC
  • trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeCommand.asm

    r540 r545  
    8080    test    bh, FLG_DRVNHEAD_DRV        ; Wait already done for Master
    8181    jnz     SHORT .SkipLongWaitSinceDriveIsNotPrimaryMaster
    82     mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_MOTOR_STARTUP, FLG_STATUS_DRDY)
     82    mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_MOTOR_STARTUP, FLG_STATUS_BSY)
    8383    call    IdeWait_PollStatusFlagInBLwithTimeoutInBH
    8484.SkipLongWaitSinceDriveIsNotPrimaryMaster:
     
    8888    call    Idepack_FakeToSSBP
    8989
    90 %ifdef MODULE_8BIT_IDE_ADVANCED
     90%ifdef MODULE_8BIT_IDE
    9191    ; Enable 8-bit PIO mode for 8-bit ATA and XT-CF
    9292    push    si
    9393    call    AH9h_Enable8bitModeForDevice8bitAta
    94     xor     al, al                      ; XTCF_8BIT_PIO_MODE
     94%ifdef MODULE_8BIT_IDE_ADVANCED
     95    mov     al, XTCF_8BIT_PIO_MODE      ; initialise with most basic transfer mode
    9596    call    AH9h_SetModeFromALtoXTCF
     97%endif ; MODULE_8BIT_IDE_ADVANCED
    9698    pop     si
    97 %endif ; MODULE_8BIT_IDE_ADVANCED
     99%endif ; MODULE_8BIT_IDE
    98100
    99101    ; Prepare to output Identify Device command
     
    173175    jne     SHORT .WaitUntilNonTransferCommandCompletes
    174176%ifdef MODULE_8BIT_IDE_ADVANCED
    175     cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_MEMMAP
    176     jae     SHORT JrIdeTransfer_StartWithCommandInAL    ; DEVICE_8BIT_XTCF_MEMMAP, DEVICE_8BIT_JRIDE_ISA or DEVICE_8BIT_ADP50L
     177    cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_JRIDE_ISA
     178    jae     SHORT JrIdeTransfer_StartWithCommandInAL    ; DEVICE_8BIT_JRIDE_ISA or DEVICE_8BIT_ADP50L
    177179%endif
    178180    jmp     IdeTransfer_StartWithCommandInAL
  • trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeDmaBlock.asm

    r526 r545  
    7878    ; so we never need to separate transfer to more than 2 separate DMA operations.
    7979
    80     ; Load XT-CF Control Register port to DX
     80    ; Load XT-CFv3 Control Register port to DX
    8181    add     dl, XTCF_CONTROL_REGISTER
    8282
     
    9090    shl     cx, 1
    9191%endif
    92     cmp     cx, ax
    93     jbe     SHORT .TransferLastDmaPageWithSizeInCX
     92    cmp     cx, ax                                  ; if we won't cross a physical page boundary...
     93    jbe     SHORT .TransferLastDmaPageWithSizeInCX  ; ...perform the transfer in one operation
    9494
    95     ; Push size for second DMA page
     95    ; Calculate how much we can transfer on first and second rounds
    9696    xchg    cx, ax                                  ; CX = BYTEs for first page
    9797    sub     ax, cx                                  ; AX = BYTEs for second page
    98     push    ax
     98    push    ax                                      ; Save bytes for second transfer on stack
    9999
    100100    ; Transfer first DMA page
     
    108108;--------------------------------------------------------------------
    109109; StartDMAtransferForXTCFwithDmaModeInBL
     110; Updated for XT-CFv3, 11-Apr-13
    110111;   Parameters:
    111112;       BL:     Byte for DMA Mode Register
    112 ;       CX:     Number of BYTEs to transfer (1...32768 since max block size is limited to 64)
    113 ;       DX:     XTCF Control Register
     113;       CX:     Number of BYTEs to transfer (512...32768 since max block size is limited to 64)
     114;       DX:     XT-CFv3 Control Register
     115;       ES:     Bits 3..0 have physical address bits 19..16
     116;       DI:     Physical address bits 15..0
    114117;   Returns:
    115 ;       Nothing
     118;       ES:DI updated (CX is added)
    116119;   Corrupts registers:
    117120;       AX
     
    122125    ; Disable Interrupts and DMA Channel 3 during DMA setup
    123126    mov     al, SET_CH3_MASK_BIT
    124     cli                                     ; Disable interrupts
    125     out     MASK_REGISTER_DMA8_out, al      ; Disable DMA Channel 3
     127    cli                                 ; Disable interrupts - programming must be atomic
     128    out     MASK_REGISTER_DMA8_out, al  ; Disable DMA Channel 3
    126129
    127130    ; Set DMA Mode (read or write using channel 3)
     
    129132    out     MODE_REGISTER_DMA8_out, al
    130133
    131     ; Set address to DMA controller
    132     out     CLEAR_FLIPFLOP_DMA8_out, al     ; Reset flip-flop to low byte
     134    ; Send start address to DMA controller
    133135    mov     ax, es
    134136    out     PAGE_DMA8_CH_3, al
    135137    mov     ax, di
     138    out     CLEAR_FLIPFLOP_DMA8_out, al                         ; Reset flip-flop to low byte
    136139    out     BASE_AND_CURRENT_ADDRESS_REGISTER_DMA8_CH3_out, al  ; Low byte
    137140    mov     al, ah
     
    140143    ; Set number of bytes to transfer (DMA controller must be programmed number of bytes - 1)
    141144    mov     ax, cx
    142     dec     ax                              ; DMA controller is programmed for one byte less
     145    dec     ax                                                  ; DMA controller is programmed for one byte less
    143146    out     BASE_AND_CURRENT_COUNT_REGISTER_DMA8_CH3_out, al    ; Low byte
    144147    mov     al, ah
     
    147150    ; Enable DMA Channel 3
    148151    mov     al, CLEAR_CH3_MASK_BIT
    149     out     MASK_REGISTER_DMA8_out, al      ; Enable DMA Channel 3
    150     sti                                     ; Enable interrupts
     152    out     MASK_REGISTER_DMA8_out, al                          ; Enable DMA Channel 3
     153    sti                                                         ; Enable interrupts
    151154
     155    ; XT-CF transfers 16 bytes at a time. We need to manually start transfer for every block by writing (anything)
     156    ; to the XT-CFv3 Control Register, which raises DRQ thereby passing system control to the 8237 DMA controller.
     157    ; The XT-CFv3 logic releases DRQ after 16 transfers, thereby handing control back to the CPU and allowing any other IRQs or
     158    ; DRQs to be serviced (which, on the PC and PC/XT will include DRAM refresh via DMA channel 0).  The 16-byte transfers can
     159    ; also be interrupted by the DMA controller raising TC (i.e. when done).  Each transfer cannot be otherwise interrupted
     160    ; and is therefore atomic (and hence fast).
    152161
    153 %if 0 ; Slow DMA code
    154     ; XT-CF transfers 16 bytes at a time. We need to manually
    155     ; start transfer for every block.
    156 ALIGN JUMP_ALIGN
    157 .TransferNextBlock:
    158     mov     al, RAISE_DRQ_AND_CLEAR_XTCF_XFER_COUNTER
    159     cli                                 ; We want no ISR to read DMA Status Register before we do
    160     out     dx, al                      ; Transfer up to 16 bytes to/from XT-CF card
    161     ; * Here XT-CF sets CPU to wait states during transfer *
    162     in      al, STATUS_REGISTER_DMA8_in
    163     sti
    164     test    al, FLG_CH3_HAS_REACHED_TERMINAL_COUNT
    165     jz      SHORT .TransferNextBlock    ; All bytes transferred?
     162%if 0   ; Slow DMA code - works by checking 8237 status register after each 16-byte transfer, until it reports TC has been raised.
     163;ALIGN JUMP_ALIGN
     164;.TransferNextBlock:
     165;   cli                                 ; We want no ISR to read DMA Status Register before we do
     166;   out     dx, al                      ; Transfer up to 16 bytes to/from XT-CF card
     167;   in      al, STATUS_REGISTER_DMA8_in
     168;   sti
     169;   test    al, FLG_CH3_HAS_REACHED_TERMINAL_COUNT
     170;   jz      SHORT .TransferNextBlock    ; All bytes transferred?
    166171%endif ; Slow DMA code
    167172
    168 
    169 %if 1 ; Fast DMA code
    170     push    cx
    171     add     cx, BYTE 15                 ; Include any partial DMA block (since we had to divide transfer to 64k physical pages)
    172     eSHR_IM cx, 4                       ; Drive Block size to 16 Byte DMA Block Size
    173 
    174 .JustOneMoreDmaBlock:
    175     mov     al, RAISE_DRQ_AND_CLEAR_XTCF_XFER_COUNTER
    176 ALIGN JUMP_ALIGN
     173%if 1   ; Fast DMA code - perform computed number of transfers, then check DMA status register to be sure
     174    push    cx                          ; need byte count to update pointer at the end
     175    add     cx, BYTE 15                 ; We'll divide transfers in 16-byte atomic transfers,
     176    eSHR_IM cx, 4                       ; so include any partial block, which will be terminated
     177ALIGN JUMP_ALIGN                        ; by the DMA controller raising T/C
    177178.TransferNextDmaBlock:
    178     out     dx, al                      ; Transfer 16 bytes to/from XT-CF card
    179     loop    .TransferNextDmaBlock
    180 
     179    out     dx, al                      ; Transfer up to 16 bytes to/from XT-CF card
     180    loop    .TransferNextDmaBlock       ; dec CX and loop if CX > 0, also adds required wait-state
    181181    inc     cx                          ; set up CX, in case we need to do an extra iteration
    182     in      al, STATUS_REGISTER_DMA8_in
    183     test    al, FLG_CH3_HAS_REACHED_TERMINAL_COUNT
    184     jz      SHORT .JustOneMoreDmaBlock          ; it wasn't set so get more bytes
    185     pop     cx
     182    in      al, STATUS_REGISTER_DMA8_in ; check 8237 DMA controller status flags...
     183    test    al, FLG_CH3_HAS_REACHED_TERMINAL_COUNT  ; ... for channel 3 terminal count
     184    jz      SHORT .TransferNextDmaBlock ; If not set, get more bytes
     185    pop     cx                          ; get back requested bytes
    186186%endif ; Fast DMA code
    187187
     188    ; Update physical address in ES:DI - since IO might need several calls through this function either from here
     189    ; if crossing a physical page boundary, and from IdeTransfer.asm if requested sectors was > PIOVARS.wSectorsInBlock
     190    mov     ax, es                      ; copy physical page address to ax
     191    add     di, cx                      ; add requested bytes to di
     192    adc     al, 0                       ; and increment physical page address, if required
     193    mov     es, ax                      ; and save it back in es
    188194
    189     ; Restore XT-CF to normal operation
    190     mov     al, XTCF_DMA_MODE
    191     out     dx, al
    192 
    193     ; Increment physical address in ES:DI
    194     mov     ax, es
    195     add     di, cx
    196     adc     al, ah
    197     mov     es, ax
    198195    ret
  • trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeIO.asm

    r536 r545  
    5252;--------------------------------------------------------------------
    5353IdeIO_InputToALfromIdeRegisterInDL:
    54     xor     dh, dh  ; IDE Register index now in DX
    55     mov     bx, dx  ; and BX
     54    xor     dh, dh  ; IDE Register index now in DX...
    5655    mov     al, [di+DPT_ATA.bDevice]
    5756    cmp     al, DEVICE_8BIT_XTIDE_REV2
    5857    jb      SHORT .InputToALfromRegisterInDX    ; Standard IDE controllers and XTIDE rev 1
     58    mov     bx, dx  ; ...and BX for A0<->A3 swap and for memory mapped I/O
    5959
    6060%ifdef MODULE_8BIT_IDE_ADVANCED
     
    109109    ; At this point remaining controllers (JRIDE, XTCF and ADP50L) all have a control
    110110    ; block offset of 8 or (8<<1) so we add 8 here and do the SHL 1 later if needed.
    111     add     dx, 8
     111    add     dx, BYTE 8
    112112    cmp     bl, DEVICE_8BIT_JRIDE_ISA
    113113    jb      SHORT IdeIO_OutputALtoIdeRegisterInDL.ShlRegisterIndexInDXandOutputAL   ; All XT-CF modes
     
    127127    ; a small trick since we only access Device Control Register at
    128128    ; offset 6h: Always clear A3 and set A0.
    129     mov     bh, dh  ; Zero BH
     129    call    AccessDPT_GetIdevarsToCSBX
    130130    add     dx, [cs:bx+IDEVARS.wControlBlockPort]
    131131    xor     dl, 1001b                       ; Clear A3, Set A0
     
    134134
    135135.OutputALtoControlBlockRegisterInDX:
    136     call    AccessDPT_GetIdevarsToCSBX      ; *FIXME* Why is this call here but not in the above block?
     136    call    AccessDPT_GetIdevarsToCSBX
    137137    add     dx, [cs:bx+IDEVARS.wControlBlockPort]
    138138    out     dx, al
  • trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdePioBlock.asm

    r526 r545  
    2020;
    2121
     22; Modified by JJP for XT-CFv3 support, Mar-13
     23
    2224; Section containing code
    2325SECTION .text
     26
     27
     28; --------------------------------------------------------------------------------------------------
     29;
     30; READ routines follow
     31;
     32; --------------------------------------------------------------------------------------------------
     33
    2434
    2535%ifdef MODULE_8BIT_IDE
     
    5060
    5161;--------------------------------------------------------------------
    52 ; IdePioBlock_ReadFromXtideRev2     or rev 1 with swapped A0 and A3 (chuck-mod)
    53 ;   Parameters:
    54 ;       CX:     Block size in 512 byte sectors
    55 ;       DX:     IDE Data port address
     62; IdePioBlock_ReadFrom8bitDataPort
     63;
     64; 8-bit PIO from a single data port.
     65;
     66;   Parameters:
     67;       CX: Block size in 512 byte sectors
     68;       DX: IDE Data port address
    5669;       ES:DI:  Normalized ptr to buffer to receive data
    5770;   Returns:
     
    6073;       AX, BX, CX
    6174;--------------------------------------------------------------------
    62 %ifndef USE_186         ; 8086/8088 compatible WORD read
    63 
    64 ALIGN JUMP_ALIGN
    65 IdePioBlock_ReadFromXtideRev2:
     75ALIGN JUMP_ALIGN
     76IdePioBlock_ReadFrom8bitDataPort:
     77%ifdef USE_186
     78    shl     cx, 9       ; Sectors to BYTEs
     79    rep insb
     80    ret
     81%else ; If 8088/8086
     82    UNROLL_SECTORS_IN_CX_TO_OWORDS
     83ALIGN JUMP_ALIGN
     84.ReadNextOword:
     85    %rep 16 ; BYTEs
     86        in      al, dx  ; Read BYTE
     87        stosb           ; Store BYTE to [ES:DI]
     88    %endrep
     89    loop    .ReadNextOword
     90    ret
     91%endif
     92
     93%endif  ; MODULE_8BIT_IDE
     94
     95
     96;--------------------------------------------------------------------
     97; IdePioBlock_ReadFrom16bitDataPort
     98;
     99; 16-bit PIO from a single data port.
     100;
     101;   Parameters:
     102;       CX: Block size in 512 byte sectors
     103;       DX: IDE Data port address
     104;       ES:DI:  Normalized ptr to buffer to receive data
     105;   Returns:
     106;       Nothing
     107;   Corrupts registers:
     108;       AX, BX, CX
     109;--------------------------------------------------------------------
     110ALIGN JUMP_ALIGN
     111IdePioBlock_ReadFrom16bitDataPort:
     112%ifdef USE_186
     113    xchg        cl, ch  ; Sectors to WORDs
     114    rep insw
     115    ret
     116
     117%else ; If 8088/8086
    66118    UNROLL_SECTORS_IN_CX_TO_OWORDS
    67119ALIGN JUMP_ALIGN
    68120.ReadNextOword:
    69121    %rep 8  ; WORDs
    70         in      ax, dx      ; Read WORD
    71         stosw               ; Store WORD to [ES:DI]
    72     %endrep
    73         loop    .ReadNextOword
    74         ret
    75 
     122        in      ax, dx  ; Read BYTE
     123        stosw           ; Store BYTE to [ES:DI]
     124    %endrep
     125    loop    .ReadNextOword
     126    ret
    76127%endif
    77128
    78 
    79 ;--------------------------------------------------------------------
    80 ; IdePioBlock_ReadFrom8bitDataPort      CF-XT when using 8-bit PIO
    81 ;   Parameters:
    82 ;       CX:     Block size in 512 byte sectors
    83 ;       DX:     IDE Data port address
    84 ;       ES:DI:  Normalized ptr to buffer to receive data
    85 ;   Returns:
    86 ;       Nothing
    87 ;   Corrupts registers:
    88 ;       AX, BX, CX
    89 ;--------------------------------------------------------------------
    90 ALIGN JUMP_ALIGN
    91 IdePioBlock_ReadFrom8bitDataPort:
    92 %ifdef USE_186
    93     shl     cx, 9       ; Sectors to BYTEs
    94     rep insb
    95     ret
    96 
    97 %else ; If 8088/8086
    98     UNROLL_SECTORS_IN_CX_TO_OWORDS
    99 ALIGN JUMP_ALIGN
    100 .ReadNextOword:
    101     %rep 16 ; BYTEs
    102         in      al, dx      ; Read BYTE
    103         stosb               ; Store BYTE to [ES:DI]
    104     %endrep
    105     loop    .ReadNextOword
    106     ret
    107 %endif
    108 
    109 
    110 ;--------------------------------------------------------------------
    111 ; IdePioBlock_WriteToXtideRev1
    112 ;   Parameters:
    113 ;       CX:     Block size in 512-byte sectors
    114 ;       DX:     IDE Data port address
    115 ;       ES:SI:  Normalized ptr to buffer containing data
    116 ;   Returns:
    117 ;       Nothing
    118 ;   Corrupts registers:
    119 ;       AX, BX, CX, DX
    120 ;--------------------------------------------------------------------
    121 ALIGN JUMP_ALIGN
    122 IdePioBlock_WriteToXtideRev1:
    123     push    ds
    124     UNROLL_SECTORS_IN_CX_TO_QWORDS
    125     mov     bl, 8       ; Bit mask for toggling data low/high reg
    126     push    es          ; Copy ES...
    127     pop     ds          ; ...to DS
    128 ALIGN JUMP_ALIGN
    129 .OutswLoop:
    130     %rep 4  ; WORDs
    131         XTIDE_OUTSW
    132     %endrep
    133     loop    .OutswLoop
    134     pop     ds
    135     ret
    136 
    137 
    138 ;--------------------------------------------------------------------
    139 ; IdePioBlock_WriteToXtideRev2  or rev 1 with swapped A0 and A3 (chuck-mod)
    140 ;   Parameters:
    141 ;       CX:     Block size in 512-byte sectors
    142 ;       DX:     IDE Data port address
    143 ;       ES:SI:  Normalized ptr to buffer containing data
    144 ;   Returns:
    145 ;       Nothing
    146 ;   Corrupts registers:
    147 ;       AX, BX, CX, DX
    148 ;--------------------------------------------------------------------
    149 ALIGN JUMP_ALIGN
    150 IdePioBlock_WriteToXtideRev2:
    151     UNROLL_SECTORS_IN_CX_TO_QWORDS
    152     push    ds
    153     push    es          ; Copy ES...
    154     pop     ds          ; ...to DS
    155 ALIGN JUMP_ALIGN
    156 .WriteNextQword:
    157     %rep 4  ; WORDs
    158         XTIDE_MOD_OUTSW
    159     %endrep
    160     loop    .WriteNextQword
    161     pop     ds
    162     ret
    163 
    164 
    165 ;--------------------------------------------------------------------
    166 ; IdePioBlock_WriteTo8bitDataPort       XT-CF when using 8-bit PIO
    167 ;   Parameters:
    168 ;       CX:     Block size in 512-byte sectors
    169 ;       DX:     IDE Data port address
    170 ;       ES:SI:  Normalized ptr to buffer containing data
    171 ;   Returns:
    172 ;       Nothing
    173 ;   Corrupts registers:
    174 ;       AX, BX, CX, DX
    175 ;--------------------------------------------------------------------
    176 ALIGN JUMP_ALIGN
    177 IdePioBlock_WriteTo8bitDataPort:
    178 
    179 %ifdef USE_186
    180     shl     cx, 9       ; Sectors to BYTEs
    181     es                  ; Source is ES segment
    182     rep outsb
    183     ret
    184 
    185 %else ; If 8088/8086
    186     UNROLL_SECTORS_IN_CX_TO_DWORDS
    187     push    ds
    188     push    es
    189     pop     ds
    190 ALIGN JUMP_ALIGN
    191 .WriteNextDword:
    192     %rep 4  ; BYTEs
    193         lodsb               ; Load BYTE from [DS:SI]
    194         out     dx, al      ; Write BYTE
    195     %endrep
    196     loop    .WriteNextDword
    197     pop     ds
    198     ret
    199 %endif
    200 
    201 %endif ; MODULE_8BIT_IDE
    202 
    203 
    204 ;--------------------------------------------------------------------
    205 ; IdePioBlock_ReadFromXtideRev2         (when 80186/80188 instructions are available)
    206 ; IdePioBlock_ReadFrom16bitDataPort     Normal 16-bit IDE
    207 ; IdePioBlock_ReadFrom32bitDataPort     VLB/PCI 32-bit IDE
    208 ;   Parameters:
    209 ;       CX:     Block size in 512 byte sectors
    210 ;       DX:     IDE Data port address
    211 ;       ES:DI:  Normalized ptr to buffer to receive data
    212 ;   Returns:
    213 ;       Nothing
    214 ;   Corrupts registers:
    215 ;       AX, BX, CX
    216 ;--------------------------------------------------------------------
    217 ALIGN JUMP_ALIGN
    218 %ifdef USE_186
    219 %ifdef MODULE_8BIT_IDE
    220 IdePioBlock_ReadFromXtideRev2:
    221 %endif
    222 %endif
    223 IdePioBlock_ReadFrom16bitDataPort:
    224     xchg    cl, ch      ; Sectors to WORDs
    225     rep
    226     db      6Dh         ; INSW
    227     ret
    228129
    229130;--------------------------------------------------------------------
     
    239140
    240141
    241 ;--------------------------------------------------------------------
    242 ; IdePioBlock_WriteTo16bitDataPort      Normal 16-bit IDE
     142
     143; --------------------------------------------------------------------------------------------------
     144;
     145; WRITE routines follow
     146;
     147; --------------------------------------------------------------------------------------------------
     148
     149%ifdef MODULE_8BIT_IDE
     150
     151;--------------------------------------------------------------------
     152; IdePioBlock_WriteToXtideRev1
     153;   Parameters:
     154;       CX: Block size in 512-byte sectors
     155;       DX: IDE Data port address
     156;       ES:SI:  Normalized ptr to buffer containing data
     157;   Returns:
     158;       Nothing
     159;   Corrupts registers:
     160;       AX, BX, CX, DX
     161;--------------------------------------------------------------------
     162ALIGN JUMP_ALIGN
     163IdePioBlock_WriteToXtideRev1:
     164    push    ds
     165    UNROLL_SECTORS_IN_CX_TO_QWORDS
     166    mov     bl, 8       ; Bit mask for toggling data low/high reg
     167    push    es          ; Copy ES...
     168    pop     ds          ; ...to DS
     169ALIGN JUMP_ALIGN
     170.OutswLoop:
     171    %rep 4  ; WORDs
     172        XTIDE_OUTSW
     173    %endrep
     174    loop    .OutswLoop
     175    pop     ds
     176    ret
     177
     178
     179;--------------------------------------------------------------------
     180; IdePioBlock_WriteToXtideRev2  or rev 1 with swapped A0 and A3 (chuck-mod)
     181;   Parameters:
     182;       CX: Block size in 512-byte sectors
     183;       DX: IDE Data port address
     184;       ES:SI:  Normalized ptr to buffer containing data
     185;   Returns:
     186;       Nothing
     187;   Corrupts registers:
     188;       AX, BX, CX, DX
     189;--------------------------------------------------------------------
     190ALIGN JUMP_ALIGN
     191IdePioBlock_WriteToXtideRev2:
     192    UNROLL_SECTORS_IN_CX_TO_QWORDS
     193    push        ds
     194    push        es      ; Copy ES...
     195    pop         ds      ; ...to DS
     196ALIGN JUMP_ALIGN
     197.WriteNextQword:
     198    %rep 4  ; WORDs
     199        XTIDE_MOD_OUTSW ; special macro
     200    %endrep
     201    loop    .WriteNextQword
     202    pop     ds
     203    ret
     204
     205
     206;--------------------------------------------------------------------
     207; IdePioBlock_WriteTo8bitDataPort
     208;   Parameters:
     209;       CX: Block size in 512-byte sectors
     210;       DX: IDE Data port address
     211;       ES:SI:  Normalized ptr to buffer containing data
     212;   Returns:
     213;       Nothing
     214;   Corrupts registers:
     215;       AX, BX, CX, DX
     216;--------------------------------------------------------------------
     217ALIGN JUMP_ALIGN
     218IdePioBlock_WriteTo8bitDataPort:
     219%ifdef USE_186
     220    shl     cx, 9       ; Sectors to BYTEs
     221    es                  ; Source is ES segment
     222    rep outsb
     223    ret
     224
     225%else ; If 8088/8086
     226    UNROLL_SECTORS_IN_CX_TO_QWORDS
     227    push        ds
     228    ;mov        ax, es
     229    ;mov        ds, ax  ; move es to ds via ax (does this run faster on 8088?)
     230    push        es
     231    pop         ds
     232ALIGN JUMP_ALIGN
     233.WriteNextQword:
     234    %rep 8  ; BYTEs
     235        lodsb           ; Load BYTE from [DS:SI]
     236        out dx, al      ; Write BYTE
     237    %endrep
     238    loop    .WriteNextQword
     239    pop     ds
     240    ret
     241%endif
     242
     243%endif ; MODULE_8BIT_IDE
     244
     245
     246;--------------------------------------------------------------------
     247; IdePioBlock_WriteTo16bitDataPort      Normal 16-bit IDE, XT-CFv3 in BIU Mode
    243248; IdePioBlock_WriteTo32bitDataPort      VLB/PCI 32-bit IDE
    244249;   Parameters:
    245 ;       CX:     Block size in 512-byte sectors
    246 ;       DX:     IDE Data port address
     250;       CX: Block size in 512-byte sectors
     251;       DX: IDE Data port address
    247252;       ES:SI:  Normalized ptr to buffer containing data
    248253;   Returns:
     
    253258ALIGN JUMP_ALIGN
    254259IdePioBlock_WriteTo16bitDataPort:
     260%ifdef USE_186
    255261    xchg    cl, ch      ; Sectors to WORDs
    256262    es                  ; Source is ES segment
    257     rep
    258     db      6Fh         ; OUTSW
    259     ret
     263    rep outsw
     264    ret
     265
     266%else ; If 8088/8086
     267    UNROLL_SECTORS_IN_CX_TO_QWORDS
     268    push    ds
     269    ;mov    ax, es
     270    ;mov    ds, ax      ; move es to ds via ax (does this run faster on 8088?)
     271    push    es
     272    pop     ds
     273ALIGN JUMP_ALIGN
     274.WriteNextQword:
     275    %rep 4  ; WORDs
     276        lodsw           ; Load BYTE from [DS:SI]
     277        out dx, ax      ; Write BYTE
     278    %endrep
     279    loop    .WriteNextQword
     280    pop     ds
     281    ret
     282%endif  ; if/else USE_186
    260283
    261284;--------------------------------------------------------------------
  • trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeTransfer.asm

    r539 r545  
    346346        dw      IdePioBlock_ReadFrom8bitDataPort    ; 2, DEVICE_8BIT_ATA
    347347        dw      IdePioBlock_ReadFromXtideRev1       ; 3, DEVICE_8BIT_XTIDE_REV1
    348         dw      IdePioBlock_ReadFromXtideRev2       ; 4, DEVICE_8BIT_XTIDE_REV2
     348        dw      IdePioBlock_ReadFrom16bitDataPort   ; 4, DEVICE_8BIT_XTIDE_REV2
     349        dw      IdePioBlock_ReadFrom8bitDataPort    ; 5, DEVICE_8BIT_XTCF_PIO8
     350        dw      IdePioBlock_ReadFrom16bitDataPort   ; 6, DEVICE_8BIT_XTCF_PIO8_WITH_BIU_OFFLOAD
    349351%ifdef MODULE_8BIT_IDE_ADVANCED
    350         dw      IdePioBlock_ReadFrom8bitDataPort    ; 5, DEVICE_8BIT_XTCF_PIO8
    351         dw      IdeDmaBlock_ReadFromXTCF            ; 6, DEVICE_8BIT_XTCF_DMA
    352 %endif
    353 %endif
     352        dw      IdeDmaBlock_ReadFromXTCF            ; 7, DEVICE_8BIT_XTCF_DMA
     353%endif ; MODULE_8BIT_IDE_ADVANCED
     354%endif ; MODULE_8BIT_IDE
    354355
    355356
     
    361362        dw      IdePioBlock_WriteToXtideRev1        ; 3, DEVICE_8BIT_XTIDE_REV1
    362363        dw      IdePioBlock_WriteToXtideRev2        ; 4, DEVICE_8BIT_XTIDE_REV2
     364        dw      IdePioBlock_WriteTo8bitDataPort     ; 5, DEVICE_8BIT_XTCF_PIO8
     365        dw      IdePioBlock_WriteTo16bitDataPort    ; 6, DEVICE_8BIT_XTCF_PIO8_WITH_BIU_OFFLOAD
    363366%ifdef MODULE_8BIT_IDE_ADVANCED
    364         dw      IdePioBlock_WriteTo8bitDataPort     ; 5, DEVICE_8BIT_XTCF_PIO8
    365         dw      IdeDmaBlock_WriteToXTCF             ; 6, DEVICE_8BIT_XTCF_DMA
    366 %endif
    367 %endif
     367        dw      IdeDmaBlock_WriteToXTCF             ; 7, DEVICE_8BIT_XTCF_DMA
     368%endif ; MODULE_8BIT_IDE_ADVANCED
     369%endif ; MODULE_8BIT_IDE
  • trunk/XTIDE_Universal_BIOS/Src/Device/IDE/JrIdeTransfer.asm

    r538 r545  
    6767
    6868    ; Get far pointer to Sector Access Window
    69     mov     dx, [di+DPT.wBasePort]
    7069    cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_JRIDE_ISA
    71     jb      SHORT .GetSectorAccessWindowForXTCF
    72 
    73     ; Get Sector Access Window for JR-IDE/ISA and ADP50L
    74     mov     ds, dx      ; Segment for JR-IDE/ISA and ADP50L
    75     mov     di, JRIDE_SECTOR_ACCESS_WINDOW_OFFSET
    76     je      SHORT .SectorAccessWindowLoadedToDSDI
     70    mov     ds, [di+DPT.wBasePort]  ; Segment for JR-IDE/ISA and ADP50L
    7771    mov     di, ADP50L_SECTOR_ACCESS_WINDOW_OFFSET
    78     jmp     SHORT .SectorAccessWindowLoadedToDSDI
    79 
    80 .GetSectorAccessWindowForXTCF:
    81     xor     di, di
    82     add     dl, XTCF_CONTROL_REGISTER
    83     in      al, dx                  ; Read high byte for Sector Access Window segment
    84     xchg    ah, al
    85     mov     ds, ax
     72    eCMOVE  di, JRIDE_SECTOR_ACCESS_WINDOW_OFFSET
    8673
    8774    ; Are we reading or writing?
  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH1Eh_XTCF.asm

    r526 r545  
    11; Project name  :   XTIDE Universal BIOS
    2 ; Description   :   Int 13h function AH=1Eh, Lo-tech XT-CF features.
     2; Description   :   Int 13h function AH=1Eh, Lo-tech XT-CF features
     3;
     4; More information at http://www.lo-tech.co.uk/XT-CF
    35
    46;
     
    1719; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
    1820;
     21
     22; Modified by JJP for XT-CFv3 support, Mar-13
    1923
    2024; Section containing code
     
    4246    jmp     Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
    4347%else
    44     push    Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
     48    push        Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
    4549    ; Fall to ProcessXTCFsubcommandFromAL
    4650%endif
     
    5660;       AH:     Int 13h return status
    5761;       CF:     0 if successful, 1 if error
     62;       DX      Command return values (see XTCF.inc)
    5863;   Corrupts registers:
    5964;       AL, BX, CX, DX, SI
     
    6267    ; IS_THIS_DRIVE_XTCF. We check this for all commands.
    6368    call    AccessDPT_IsThisDeviceXTCF
    64     jne     SHORT XTCFnotFound
     69    jne     SHORT .XTCFnotFound
    6570    and     ax, BYTE 7Fh                ; Subcommand now in AX (clears AH and CF)
    66     jz      SHORT .ReturnWithSuccess    ; IS_THIS_DRIVE_XTCF
     71    jz      SHORT .XTCFfound            ; Sub-function IS_THIS_DRIVE_XTCF (=0)
    6772
    68     ; READ_XTCF_CONTROL_REGISTER_TO_DH
    69     dec     ax                          ; Subcommand
    70     jnz     SHORT .SkipReadXtcfControlRegisterToDH
    71     mov     dx, [di+DPT.wBasePort]
    72     add     dl, XTCF_CONTROL_REGISTER   ; Will never overflow (keeps CF cleared)
    73     in      al, dx
    74     mov     [bp+IDEPACK.intpack+INTPACK.dh], al
    75 .ReturnWithSuccess:
    76     ret     ; With AH and CF cleared
     73    dec     ax                          ; Test subcommand...
     74    jz      SHORT .SetXTCFtransferMode  ; ...for value 1 (SET_XTCF_TRANSFER_MODE)
    7775
    78 .SkipReadXtcfControlRegisterToDH:
    79     ; WRITE_DH_TO_XTCF_CONTROL_REGISTER
    80     dec     ax                          ; Subcommand
    81     jnz     SHORT XTCFnotFound          ; Invalid subcommand
    82     mov     al, [bp+IDEPACK.intpack+INTPACK.dh]
    83     ; Fall to AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL
     76    dec     ax                          ; Test subcommand for value 2 (GET_XTCF_TRANSFER_MODE)
     77    jnz     SHORT .XTCFnotFound         ; Invalid subcommand
     78
     79    ; GET_XTCF_TRANSFER_MODE
     80    call    AH1Eh_GetCurrentXTCFmodeToAX
     81    mov     dl, [di+DPT_ATA.bBlockSize]
     82    mov     [bp+IDEPACK.intpack+INTPACK.dh], al ; return mode value...
     83    mov     [bp+IDEPACK.intpack+INTPACK.dl], dl ; ...and block size, via INTPACK...
     84.XTCFfound:
     85    ret                                         ; ...with AH and CF cleared
     86
     87.XTCFnotFound:
     88.AH1Eh_LoadInvalidCommandToAHandSetCF:
     89    stc                 ; set carry flag since XT-CF not found
     90    mov     ah, RET_HD_INVALID
     91    ret                 ; and return
     92
     93.SetXTCFtransferMode:
     94    mov     al, [bp+IDEPACK.intpack+INTPACK.dh] ; get specified mode (eg XTCF_DMA_MODE)
     95    ; and fall to AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL
    8496
    8597
    8698;--------------------------------------------------------------------
    87 ; AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL
     99; AH1Eh_ChangeXTCFmodeBasedOnModeInAL
    88100;   Parameters:
    89 ;       AL:     XT-CF Control Register
     101;       AL:     XT-CF Mode (see XTCF.inc)
    90102;       DS:DI:  Ptr to DPT (in RAMVARS segment)
    91103;       SS:BP:  Ptr to IDEPACK
    92 ;   Returns:
     104;   Returns:   
    93105;       AH:     Int 13h return status
    94106;       CF:     0 if successful, 1 if error
     
    96108;       AL, BX, CX, DX, SI
    97109;--------------------------------------------------------------------
    98 AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL:
    99     ; Output Control Register
    100     mov     dx, [di+DPT.wBasePort]
    101     add     dl, XTCF_CONTROL_REGISTER
    102     out     dx, al
     110AH1Eh_ChangeXTCFmodeBasedOnModeInAL:
     111    ; Note: Control register (as of XT-CFv3) is now a write-only register,
     112    ;       whos purpose is *only* to raise DRQ.  The register cannot be read.
     113    ;       Selected transfer mode is stored in BIOS variable (DPT_ATA.bDevice).
    103114
    104115    ; We always need to enable 8-bit mode since 16-bit mode is restored
    105116    ; when controller is reset (AH=00h or 0Dh)
     117    ;
     118    ; Note that when selecting 'DEVICE_8BIT_PIO_MODE_WITH_BIU_OFFLOAD' mode,
     119    ; the ATA device (i.e. CompactFlash card) will operate in 8-bit mode, but
     120    ; data will be transferred from it's data register using 16-bit CPU instructions
     121    ; like REP INSW.  This works because XT-CF adapters are 8-bit cards, and
     122    ; the BIU in the machine splits each WORD requested by the CPU into two 8-bit
     123    ; ISA cycles at base+0h and base+1h.  The XT-CF cards do not decode A0, hence
     124    ; both accesses appear the same to the card and the BIU then re-constructs
     125    ; the data for presentation to the CPU.
     126    ;
     127    ; Also note though that some machines, noteably AT&T PC6300, have hardware
     128    ; errors in the BIU logic, resulting in reversed byte ordering.  Therefore,
     129    ; mode DEVICE_8BIT_PIO is the default transfer mode for best system
     130    ; compatibility.
     131
    106132    ePUSH_T bx, AH23h_Enable8bitPioMode
    107133
    108     ; Convert Control Register Contents to device code
    109     test    al, al
    110     jz      SHORT .Set8bitPioMode
    111     cmp     al, XTCF_MEMORY_MAPPED_MODE
    112     jae     SHORT .SetMemoryMappedMode
     134    ; Convert mode to device type (see XTCF.inc for full details)
     135    and     ax, 3
     136    jz  SHORT .Set8bitPioMode   ; XTCF_8BIT_PIO_MODE = 0
     137    dec     ax                  ; XTCF_8BIT_PIO_MODE_WITH_BIU_OFFLOAD = 1
     138    jz  SHORT .Set8bitPioModeWithBIUOffload
    113139
    114     ; Set DMA Mode
     140    ; XTCF_DMA_MODE = 2 (allow 3 as well for more optimized code)
    115141    mov     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_DMA
     142
     143    ; DMA transfers have limited block sizee
    116144    mov     al, [di+DPT_ATA.bBlockSize]
    117     cmp     al, XTCF_DMA_MODE_MAX_BLOCK_SIZE
    118     jbe     SHORT AH24h_SetBlockSize
    119     mov     al, XTCF_DMA_MODE_MAX_BLOCK_SIZE
    120     jmp     SHORT AH24h_SetBlockSize
    121 
    122 .SetMemoryMappedMode:
    123     mov     al, DEVICE_8BIT_XTCF_MEMMAP
    124     SKIP2B  bx
     145    MIN_U   al, XTCF_DMA_MODE_MAX_BLOCK_SIZE
     146    jmp     AH24h_SetBlockSize
     147    ; exit via ret in AH24_SetBlockSize then through AH23h_Enable8bitPioMode
    125148
    126149.Set8bitPioMode:
    127     mov     al, DEVICE_8BIT_XTCF_PIO8
    128     mov     [di+DPT_ATA.bDevice], al
    129     ret     ; Via AH23h_Enable8bitPioMode
     150    mov     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_PIO8
     151    ret     ; through AH23h_Enable8bitPioMode
     152
     153.Set8bitPioModeWithBIUOffload:
     154    mov     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_PIO8_WITH_BIU_OFFLOAD
     155    ret     ; through AH23h_Enable8bitPioMode
    130156
    131157
    132158;--------------------------------------------------------------------
    133 ; AH1Eh_DetectXTCFwithBasePortInDX
     159; AH1Eh_GetCurrentXTCFmodeToAX
    134160;   Parameters:
    135 ;       DX:     Base I/O port address to check
    136 ;   Returns:
    137 ;       AH:     RET_HD_SUCCESS if XT-CF is found from port
    138 ;               RET_HD_INVALID if XT-CF is not found
    139 ;       CF:     Cleared if XT-CF found
    140 ;               Set if XT-CF not found
     161;       DS:DI:  Ptr to DPT (in RAMVARS segment)
     162;   Returns:   
     163;       AX:     XT-CF mode (XTCF_8BIT_PIO_MODE, XTCF_8BIT_PIO_MODE_WITH_BIU_OFFLOAD or XTCF_DMA_MODE)
     164;       CF:     Clear
    141165;   Corrupts registers:
    142 ;       AL
     166;       Nothing
    143167;--------------------------------------------------------------------
    144 AH1Eh_DetectXTCFwithBasePortInDX:
    145     push    dx
    146     add     dl, XTCF_CONTROL_REGISTER_INVERTED_in   ; set DX to XT-CF config register (inverted)
    147     in      al, dx      ; get value
    148     mov     ah, al      ; save in ah
    149     inc     dx          ; set DX to XT-CF config register (non-inverted)
    150     in      al, dx      ; get value
    151     not     al          ; invert value
    152     pop     dx
    153     sub     ah, al      ; do they match? (clear AH if they do)
    154     jz      SHORT XTCFfound
    155 
    156 XTCFnotFound:
    157 AH1Eh_LoadInvalidCommandToAHandSetCF:
    158     stc                 ; set carry flag since XT-CF not found
    159     mov     ah, RET_HD_INVALID
    160 XTCFfound:
    161     ret                 ; and return
     168AH1Eh_GetCurrentXTCFmodeToAX:
     169    eMOVZX  ax, BYTE [di+DPT_ATA.bDevice]   ; get current mode from DPT
     170    sub     al, DEVICE_8BIT_XTCF_PIO8
     171    shr     ax, 1                           ; Device type to XT-CF mode
     172    ret
  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH24h_HSetBlocks.asm

    r526 r545  
    6363    cmp     al, XTCF_DMA_MODE_MAX_BLOCK_SIZE
    6464    jbe     SHORT .NoNeedToLimitBlockSize
     65
     66    ; Return error if we tried too large block for XT-CF.
     67    ; Do not limit it to maximum supported since software calling AH=24h
     68    ; must know what the actual block size is.
    6569    cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_DMA
    66     je      SHORT AH1Eh_LoadInvalidCommandToAHandSetCF
     70    je      SHORT ProcessXTCFsubcommandFromAL.AH1Eh_LoadInvalidCommandToAHandSetCF
    6771.NoNeedToLimitBlockSize:
    6872%endif ; MODULE_8BIT_IDE_ADVANCED
     
    7781    pop     bx
    7882    jnc     SHORT .StoreBlockSize
    79     mov     bl, 1       ; Block size 1 will always work
     83
     84    ; Drive disabled block mode since we tried unsupported block size.
     85    ; We must adjust DPT accordingly.
     86    mov     bl, 1       ; Block size 1 will always work (=Block mode disabled)
    8087.StoreBlockSize:        ; Store new block size to DPT and return
    8188    mov     [di+DPT_ATA.bBlockSize], bl
  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH8h_HParams.asm

    r543 r545  
    5858
    5959    test    byte [bp+IDEPACK.intpack+INTPACK.dl], 080h
    60     jnz     .Done
     60    jnz     SHORT .CalledForHardDrive
    6161
    6262    mov     [bp+IDEPACK.intpack+INTPACK.bl], bl
     
    6767    call    FloppyDrive_GetCountToAX
    6868
    69 .Done:
     69.CalledForHardDrive:
    7070    mov     ah, dh
    7171
     
    133133%ifdef MODULE_SERIAL_FLOPPY
    134134    mov     bl, [di+DPT.bFlagsHigh]
    135 %ifndef CHECK_FOR_UNUSED_ENTRYPOINTS             ; not sure why this is needed for preprocessor-only
    136135    eSHR_IM bl, FLGH_DPT_SERIAL_FLOPPY_TYPE_FIELD_POSITION
    137 %endif
    138136%endif
    139137    ret
  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH9h_HInit.asm

    r542 r545  
    114114;;; Set XT-CF mode
    115115%ifdef MODULE_8BIT_IDE_ADVANCED
    116     call    AccessDPT_GetIdevarsToCSBX
    117     mov     al, [cs:bx+IDEVARS.bXTCFcontrolRegister]
     116    call    AH1Eh_GetCurrentXTCFmodeToAX
    118117    call    AH9h_SetModeFromALtoXTCF
    119118    STORE_ERROR_FLAG_TO_DPT     FLG_INITERROR_FAILED_TO_SET_XTCF_MODE
     
    284283    call    AccessDPT_IsThisDeviceXTCF
    285284    jne     SHORT IgnoreInvalidCommandError
    286     jmp     AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL
     285    jmp     AH1Eh_ChangeXTCFmodeBasedOnModeInAL
    287286%endif ; MODULE_8BIT_IDE_ADVANCED
    288287
  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH48h_GetExtendedDriveParameters.asm

    r544 r545  
    139139    sbb     dx, (MAX_SECTOR_COUNT_TO_RETURN_PCHS+1) >> 16
    140140    sbb     bx, cx      ; Zero
    141     jnc     SHORT .ReturnWithSuccess
     141    jnc     SHORT .DoNotSetChsFlag
    142142    or      BYTE [di+EDRIVE_INFO.wFlags], FLG_CHS_INFORMATION_IS_VALID
    143143
     144    ; We store something to P-CHS anyway since some HW detection programs
     145    ; ignore the CHS flag. And we should at least clear the variables anyway
     146    ; since the same buffer is used for all drives so it contains parameters
     147    ; from previously scanned drive.
     148.DoNotSetChsFlag:
    144149    eMOVZX  dx, BYTE [es:si+DPT.bPchsHeads]
    145150    mov     [di+EDRIVE_INFO.dwHeads], dx
  • trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectDrives.asm

    r528 r545  
    158158;--------------------------------------------------------------------
    159159StartDetectionWithDriveSelectByteInBHandStringInCX:
    160 %ifdef MODULE_8BIT_IDE_ADVANCED
    161     ; Autodetect port for XT-CF
     160%ifdef MODULE_8BIT_IDE
    162161    call    DetectDrives_DoesIdevarsInCSBPbelongToXTCF
    163     jne     SHORT .SkipXTCFportDetection
     162    jne     SHORT .ShouldNotSkipSlaveDriveDetection
    164163
    165164    ; XT-CF do not support slave drives so skip detection
    166165    test    bh, FLG_DRVNHEAD_DRV
    167166    jnz     SHORT NoSlaveDriveAvailable
    168 
    169     ; XT-CF do not support slave drives so we can safely update port
    170     ; for next drive (another XT-CF card on same system)
    171 .DetectNextPort:
    172     mov     dx, [es:BOOTVARS.wNextXTCFportToScan]
    173     xor     dl, 40h
    174     jnz     SHORT .StoreNextXTCFportToScan
    175     inc     dh
    176     cmp     dh, XTCF_BASE_PORT_4 >> 8
    177     ja      SHORT .SkipXTCFportDetection        ; XT-CF not found from any port
    178 .StoreNextXTCFportToScan:
    179     mov     [es:BOOTVARS.wNextXTCFportToScan], dx
    180 
    181     call    AH1Eh_DetectXTCFwithBasePortInDX
    182     jc      SHORT .DetectNextPort               ; XT-CF not found from this port
    183 
    184     ; We now have autodetected port in DX
    185     push    dx
    186     xchg    ax, dx                              ; Port to print in AX
    187     call    DetectPrint_StartDetectWithAutodetectedBasePortInAXandIdeVarsInCSBP
    188     jmp     SHORT .DriveDetectionStringPrintedOnScreen
    189 
    190     ; Print detect string for devices that do not support autodetection
    191 .SkipXTCFportDetection:
    192     push    dx
    193 %endif ; MODULE_8BIT_IDE_ADVANCED
     167.ShouldNotSkipSlaveDriveDetection:
     168%endif ; MODULE_8BIT_IDE
    194169
    195170    call    DetectPrint_StartDetectWithMasterOrSlaveStringInCXandIdeVarsInCSBP
     
    197172%ifdef MODULE_HOTKEYS
    198173    call    HotkeyBar_UpdateDuringDriveDetection
    199 %endif
    200 
    201 %ifdef MODULE_8BIT_IDE_ADVANCED
    202     pop     dx
    203174%endif
    204175    ; Fall to .ReadAtaInfoFromHardDisk
     
    278249
    279250
    280 %ifdef MODULE_8BIT_IDE_ADVANCED
     251%ifdef MODULE_8BIT_IDE
    281252;--------------------------------------------------------------------
    282253; DetectDrives_DoesIdevarsInCSBPbelongToXTCF
     
    292263    mov     al, [cs:bp+IDEVARS.bDevice]
    293264    cmp     al, DEVICE_8BIT_XTCF_PIO8
    294     je      SHORT .DeviceIsXTCF
     265    je      SHORT .Done
     266    cmp     al, DEVICE_8BIT_XTCF_PIO8_WITH_BIU_OFFLOAD
     267
     268%ifdef MODULE_8BIT_IDE_ADVANCED
     269    je      SHORT .Done
    295270    cmp     al, DEVICE_8BIT_XTCF_DMA
    296     je      SHORT .DeviceIsXTCF
    297     cmp     al, DEVICE_8BIT_XTCF_MEMMAP
    298 .DeviceIsXTCF:
     271%endif ; MODULE_8BIT_IDE_ADVANCED
     272
     273.Done:      ; return state via ZF, set from the cmp instructions
    299274NoSlaveDriveAvailable:
    300275    ret
    301 %endif ; MODULE_8BIT_IDE_ADVANCED
     276%endif ; MODULE_8BIT_IDE
  • trunk/XTIDE_Universal_BIOS/Src/Main.asm

    r541 r545  
    145145
    146146%ifdef MODULE_8BIT_IDE_ADVANCED
    147     at  ROMVARS.ideVars1+IDEVARS.bXTCFcontrolRegister,  db  XTCF_8BIT_PIO_MODE
    148147    at  ROMVARS.ideVars1+IDEVARS.bDevice,               db  DEVICE_8BIT_XTCF_PIO8
    149148%endif
  • trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AccessDPT.asm

    r542 r545  
    103103    cmp     ah, DEVICE_8BIT_XTCF_PIO8
    104104    je      SHORT .DeviceIsXTCF
     105    cmp     ah, DEVICE_8BIT_XTCF_PIO8_WITH_BIU_OFFLOAD
     106    je      SHORT .DeviceIsXTCF
    105107    cmp     ah, DEVICE_8BIT_XTCF_DMA
    106     je      SHORT .DeviceIsXTCF
    107     cmp     ah, DEVICE_8BIT_XTCF_MEMMAP
    108108.DeviceIsXTCF:
    109109    ret
  • trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/BootVars.asm

    r528 r545  
    3232;--------------------------------------------------------------------
    3333BootVars_Initialize:
    34 %ifdef MODULE_8BIT_IDE_ADVANCED
    35     mov     WORD [es:BOOTVARS.wNextXTCFportToScan], XTCF_BASE_PORT_DETECTION_SEED
    36 %endif
    37 
    3834    ; Clear all DRVDETECTINFO structs to zero
    3935    mov     al, DRVDETECTINFO_size
  • trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/CreateDPT.asm

    r544 r545  
    122122
    123123%ifdef MODULE_EBIOS
    124 %ifdef CREATE_COMPATIBLE_DPT
    125124    ; Store P-Cylinders here for Compatible DPTs when FLGL_DPT_LBA is not set
    126125    ; or when drive has over 15,482,880 sectors
    127126    mov     [di+DPT.wPchsCylinders], ax
    128 %endif
    129127    test    cl, FLGL_DPT_LBA
    130128    jz      SHORT .NoLbaSoNoEBIOS
     
    263261CreateDPT_StoreIdevarsOffsetAndBasePortFromCSBPtoDPTinDSDI:
    264262    mov     [di+DPT.bIdevarsOffset], bp     ; IDEVARS must start in first 256 bytes of ROM
    265 
    266 %ifdef MODULE_8BIT_IDE_ADVANCED
    267     call    DetectDrives_DoesIdevarsInCSBPbelongToXTCF
    268     jne     SHORT .DeviceUsesPortSpecifiedInIDEVARS
    269     mov     [di+DPT.wBasePort], dx
    270     ret
    271 .DeviceUsesPortSpecifiedInIDEVARS:
    272 %endif ; MODULE_8BIT_IDE_ADVANCED
    273 
    274263    mov     ax, [cs:bp+IDEVARS.wBasePort]
    275264    mov     [di+DPT.wBasePort], ax
  • trunk/XTIDE_Universal_BIOS/makefile

    r543 r545  
    105105DEFINES_XT = $(DEFINES_COMMON) ELIMINATE_CGA_SNOW MODULE_8BIT_IDE_ADVANCED
    106106DEFINES_XTPLUS = $(DEFINES_COMMON) $(DEFINES_XT) USE_186
    107 DEFINES_AT = $(DEFINES_COMMON) USE_AT USE_286 MODULE_IRQ MODULE_ADVANCED_ATA
     107DEFINES_AT = $(DEFINES_COMMON) USE_AT USE_286 MODULE_IRQ MODULE_ADVANCED_ATA CREATE_COMPATIBLE_DPT
    108108
    109109DEFINES_XT_LARGE = $(DEFINES_XT) $(DEFINES_COMMON_LARGE)
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