source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Device/Device.asm@ 465

Last change on this file since 465 was 443, checked in by aitotat@…, 12 years ago

Changes to XTIDE Universal BIOS:

  • Offset to ATA-ID buffer will no longer get corrupted when trying to enable 8-bit mode for XT-CF.
  • Optimized A0<->A3 swapping a bit.
File size: 5.3 KB
Line 
1; Project name : XTIDE Universal BIOS
2; Description : Command and port direction functions for different device types.
3
4;
5; XTIDE Universal BIOS and Associated Tools
6; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
7;
8; This program is free software; you can redistribute it and/or modify
9; it under the terms of the GNU General Public License as published by
10; the Free Software Foundation; either version 2 of the License, or
11; (at your option) any later version.
12;
13; This program is distributed in the hope that it will be useful,
14; but WITHOUT ANY WARRANTY; without even the implied warranty of
15; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16; GNU General Public License for more details.
17; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
18;
19
20; Section containing code
21SECTION .text
22
23
24%macro TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE 1
25 test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE
26 jnz SHORT %1
27%endmacro
28
29%macro CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF 2
30 cmp BYTE [cs:bp+IDEVARS.bDevice], %1
31 je SHORT %2
32%endmacro
33
34
35
36;--------------------------------------------------------------------
37; Device_FinalizeDPT
38; Parameters:
39; DS:DI: Ptr to Disk Parameter Table
40; ES:SI: Ptr to 512-byte ATA information read from the drive
41; CS:BP: Ptr to IDEVARS for the controller
42; Returns:
43; Nothing
44; Corrupts registers:
45; AX, BX, CX, DX
46;--------------------------------------------------------------------
47%ifdef MODULE_SERIAL ; IDE + Serial
48Device_FinalizeDPT:
49 ; needs to check IDEVARS vs. checking the DPT as the serial bit in the DPT is set in the Finalize routine
50 CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .FinalizeDptForSerialPortDevice
51 jmp IdeDPT_Finalize
52.FinalizeDptForSerialPortDevice:
53 jmp SerialDPT_Finalize
54
55%else ; IDE
56 Device_FinalizeDPT EQU IdeDPT_Finalize
57%endif
58
59
60;--------------------------------------------------------------------
61; Device_ResetMasterAndSlaveController
62; Parameters:
63; DS:DI: Ptr to DPT (in RAMVARS segment)
64; Returns:
65; AH: INT 13h Error Code
66; CF: Cleared if success, Set if error
67; Corrupts registers:
68; AL, BX, CX, DX
69;--------------------------------------------------------------------
70%ifdef MODULE_SERIAL ; IDE + Serial
71Device_ResetMasterAndSlaveController:
72 TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort
73 jmp IdeCommand_ResetMasterAndSlaveController
74
75%else ; IDE
76 Device_ResetMasterAndSlaveController EQU IdeCommand_ResetMasterAndSlaveController
77%endif
78
79
80;--------------------------------------------------------------------
81; Device_IdentifyToBufferInESSIwithDriveSelectByteInBH
82; Parameters:
83; BH: Drive Select byte for Drive and Head Select Register
84; DS: Segment to RAMVARS
85; ES:SI: Ptr to normalized buffer to receive 512-byte IDE Information
86; CS:BP: Ptr to IDEVARS
87; Returns:
88; AH: INT 13h Error Code
89; CF: Cleared if success, Set if error
90; Corrupts registers:
91; AL, BX, CX, DX, SI, DI, ES
92;--------------------------------------------------------------------
93%ifdef MODULE_SERIAL ; IDE + Serial
94Device_IdentifyToBufferInESSIwithDriveSelectByteInBH:
95 CMP_USING_IDEVARS_IN_CSBP_AND_JUMP_IF DEVICE_SERIAL_PORT, .IdentifyDriveFromSerialPort
96 jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
97.IdentifyDriveFromSerialPort:
98 jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
99
100%else ; IDE
101 Device_IdentifyToBufferInESSIwithDriveSelectByteInBH EQU IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
102%endif
103
104
105;--------------------------------------------------------------------
106; Device_OutputCommandWithParameters
107; Parameters:
108; BH: Default system timer ticks for timeout (can be ignored)
109; BL: IDE Status Register bit to poll after command
110; ES:SI: Ptr to normalized buffer (for data transfer commands)
111; DS:DI: Ptr to DPT (in RAMVARS segment)
112; SS:BP: Ptr to IDEPACK
113; Returns:
114; AH: INT 13h Error Code
115; CX: Number of successfully transferred sectors (for transfer commands)
116; CF: Cleared if success, Set if error
117; Corrupts registers:
118; AL, BX, (CX), DX, (ES:SI for data transfer commands)
119;--------------------------------------------------------------------
120%ifdef MODULE_SERIAL ; IDE + Serial
121ALIGN JUMP_ALIGN
122Device_OutputCommandWithParameters:
123 TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE .OutputCommandToSerialPort
124 jmp IdeCommand_OutputWithParameters
125
126ALIGN JUMP_ALIGN
127.OutputCommandToSerialPort:
128 jmp SerialCommand_OutputWithParameters
129
130%else ; IDE
131 Device_OutputCommandWithParameters EQU IdeCommand_OutputWithParameters
132%endif
133
134
135;--------------------------------------------------------------------
136; Device_SelectDrive
137; Parameters:
138; DS:DI: Ptr to DPT (in RAMVARS segment)
139; SS:BP: Ptr to IDEPACK
140; Returns:
141; AH: INT 13h Error Code
142; CF: Cleared if success, Set if error
143; Corrupts registers:
144; AL, BX, CX, DX
145;--------------------------------------------------------------------
146%ifdef MODULE_SERIAL ; IDE + Serial
147Device_SelectDrive:
148 TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort
149 jmp IdeCommand_SelectDrive
150
151%else ; IDE
152 Device_SelectDrive EQU IdeCommand_SelectDrive
153%endif
154
155
156%ifdef MODULE_SERIAL
157ALIGN JUMP_ALIGN
158ReturnSuccessForSerialPort:
159 xor ax, ax
160 ret
161%endif
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