source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/CustomDPT.inc @ 550

Last change on this file since 550 was 550, checked in by aitotat@…, 8 years ago

Changes to XTIDE Universal BIOS:

  • CREATE_COMPATIBLE_DPT is now MODULE_COMPATIBLE_TABLES.
  • DPTs pointed by INT 41h and INT 46h are now swapped when swapping drives 81h and 80h.
  • Block mode commands are no longer used when block size is set to 1 with AH=24h.
File size: 5.5 KB
Line 
1; Project name  :   XTIDE Universal BIOS
2; Description   :   Defines for DPT structs containing custom
3;                   Disk Parameter Table used by this BIOS.
4
5;
6; XTIDE Universal BIOS and Associated Tools
7; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
8;
9; This program is free software; you can redistribute it and/or modify
10; it under the terms of the GNU General Public License as published by
11; the Free Software Foundation; either version 2 of the License, or
12; (at your option) any later version.
13;
14; This program is distributed in the hope that it will be useful,
15; but WITHOUT ANY WARRANTY; without even the implied warranty of
16; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17; GNU General Public License for more details.
18; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
19;
20
21%ifndef CUSTOMDPT_INC
22%define CUSTOMDPT_INC
23
24; Base DPT for all device types
25struc DPT
26    ; General Disk Parameter Table related
27    .wFlags:
28    .bFlagsLow              resb    1
29    .bFlagsHigh             resb    1
30    .bIdevarsOffset         resb    1   ; Offset to IDEVARS for this drive
31    .bInitError             resb    1   ; Flags for AH=09h initialization errors
32    .wBasePort              resb    2   ; Segment for JR-IDE/ISA and ADP50L
33
34    ; CHS variables
35    .wLchsCylinders         resb    2   ; (1...1027, yes 1027)
36    .wLchsHeadsAndSectors:
37    .bLchsHeads             resb    1   ; (1...255)
38    .bLchsSectorsPerTrack   resb    1   ; (1...63)
39    .wPchsHeadsAndSectors:
40    .bPchsHeads             resb    1   ; (1...16)
41    .bPchsSectorsPerTrack   resb    1   ; (1...63)
42%ifdef MODULE_COMPATIBLE_TABLES OR MODULE_EBIOS
43    .wPchsCylinders         resb    2
44%endif
45
46    ; Total LBA sector count
47%ifdef MODULE_EBIOS
48    .twLbaSectors           resb    6   ; 48-bit sector count for LBA addressing
49%endif
50                            alignb  2   ; WORD alignment for DPT_SERIAL or DPT_ATA
51endstruc
52
53    ; Bit definitions for DPT.bFlagsLow
54    MASKL_DPT_CHS_SHIFT_COUNT           EQU (3<<0)              ; Bits 0...1, P-CHS to L-CHS bit shift count (0...3)
55    MASKL_DPT_TRANSLATEMODE             EQU MASK_DRVPARAMS_TRANSLATEMODE    ; Bits 2...3, NORMAL, LARGE or Assisted LBA addressing mode
56    FLGL_DPT_ASSISTED_LBA               EQU (1<<(TRANSLATEMODE_FIELD_POSITION+1))
57    FLGL_DPT_SLAVE                      EQU FLG_DRVNHEAD_DRV    ; Bit 4, Drive is a Slave Drive
58%ifdef MODULE_IRQ
59    FLGL_DPT_ENABLE_IRQ                 EQU (1<<5)              ; Bit 5, Enable IRQ
60%endif
61    FLGL_DPT_LBA                        EQU FLG_DRVNHEAD_LBA    ; Bit 6, Drive supports LBA and so EBIOS functions can be supported
62%ifdef MODULE_EBIOS
63    FLGL_DPT_LBA48                      EQU (1<<7)              ; Bit 7, Drive supports 48-bit LBA (Must be bit 7!)
64%endif
65
66
67    ; Bit definitions for DPT.bFlagsHigh
68    FLGH_DPT_USE_BLOCK_MODE_COMMANDS    EQU (1<<1)  ; Bit 1, Use block transfer commands (must be bit 1!)
69%ifdef MODULE_SERIAL
70    FLGH_DPT_SERIAL_DEVICE              EQU (1<<2)  ; Bit 2, Serial Port Device
71%endif
72%ifdef MODULE_FEATURE_SETS
73    FLGH_DPT_POWER_MANAGEMENT_SUPPORTED EQU (1<<5)  ; Bit 5, Drive supports power management
74%endif
75%ifdef MODULE_ADVANCED_ATA
76    FLGH_DPT_IORDY                      EQU (1<<7)  ; Bit 7, Controller and Drive supports IORDY
77%endif
78
79    ; Serial device only
80%ifdef MODULE_SERIAL_FLOPPY
81    FLGH_DPT_SERIAL_FLOPPY                      EQU (1<<4)
82    FLGH_DPT_SERIAL_FLOPPY_TYPE_MASK            EQU 0e0h
83    FLGH_DPT_SERIAL_FLOPPY_TYPE_FIELD_POSITION  EQU 5
84%endif
85
86
87    ; Flags for DPT_ADVANCED_ATA.bInitError
88    FLG_INITERROR_FAILED_TO_SELECT_DRIVE                EQU (1<<0)
89    FLG_INITERROR_FAILED_TO_INITIALIZE_CHS_PARAMETERS   EQU (1<<1)
90    FLG_INITERROR_FAILED_TO_SET_WRITE_CACHE             EQU (1<<2)
91    FLG_INITERROR_FAILED_TO_RECALIBRATE_DRIVE           EQU (1<<3)
92    FLG_INITERROR_FAILED_TO_SET_BLOCK_MODE              EQU (1<<4)
93    FLG_INITERROR_FAILED_TO_SET_PIO_MODE                EQU (1<<5)
94    FLG_INITERROR_FAILED_TO_INITIALIZE_STANDBY_TIMER    EQU (1<<6)
95    FLG_INITERROR_FAILED_TO_SET_XTCF_MODE               EQU (1<<7)
96    FLG_INITERROR_FAILED_TO_SET_8BIT_MODE               EQU FLG_INITERROR_FAILED_TO_SET_XTCF_MODE
97
98
99
100; DPT for ATA devices
101struc DPT_ATA
102    .dpt                    resb    DPT_size
103    .bDevice                resb    1   ; Device Type from IDEVARS (overrided when 32-bit controller detected)
104    .bBlockSize             resb    1   ; Current block size in sectors (do not set to zero!)
105endstruc
106
107
108
109; Additional variables needed to initialize and reset Advanced IDE Controllers.
110; EBDA must be reserved for DPTs when using these!
111%ifdef MODULE_ADVANCED_ATA
112struc DPT_ADVANCED_ATA
113    .dpt_ata                resb    DPT_ATA_size
114    .wControllerID          resb    2   ; Controller specific ID WORD (from Advanced Controller detection)
115    .wControllerBasePort    resb    2   ; Advanced Controller port (not IDE port)
116    .wMinPioCycleTime       resb    2   ; Minimum PIO Cycle Time in ns
117    .bPioMode               resb    1   ; Best supported PIO mode
118                            alignb  2
119endstruc
120%endif
121
122
123; DPT for Serial devices
124%ifdef MODULE_SERIAL
125struc DPT_SERIAL
126    .dpt                    resb    DPT_size
127    .wSerialPortAndBaud:
128    .bSerialPort            resb    1   ; Serial connection I/O port address, divided by 4
129    .bSerialBaud            resb    1   ; Serial connection baud rate divisor
130endstruc
131
132; On performance critical situations we compare DPT_ATA.bDevice without checking FLGH_DPT_SERIAL_DEVICE
133; first! DPT_ATA.bDevice uses small values so there will be no problems.
134%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
135    %if DPT_SERIAL.bSerialPort <> DPT_ATA.bDevice
136        %error "DPT_ATA.bDevice and DPT_SERIAL.bSerialPort must be in same offsets!"
137    %endif
138%endif
139%endif ; MODULE_SERIAL
140
141
142; This is the common size for all DPTs. All DPTs must be equal size.
143%ifdef MODULE_ADVANCED_ATA
144    LARGEST_DPT_SIZE            EQU     DPT_ADVANCED_ATA_size
145%else
146    LARGEST_DPT_SIZE            EQU     DPT_ATA_size
147%endif
148
149
150    ; Number of Sectors per Track is fixed to 63 for LBA assist calculation.
151    ; 1024 cylinders, 256 heads, 63 sectors = 8.4 GB limit (but DOS does not support more than 255 heads)
152    MAX_LCHS_CYLINDERS          EQU     1024
153    LBA_ASSIST_SPT              EQU     63
154
155
156%endif ; CUSTOMDPT_INC
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