source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Device/Device.asm@ 615

Last change on this file since 615 was 613, checked in by Tomi Tilli, 3 years ago

Added more complex way to limit illegal P-CHS Cylinders. This way more modifications can be easily made later if necessary.
Updated biosdrvs to display unmodified and modified CHS.
File size: 6.2 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, 2011-2013 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 BYTE [cs:bp+IDEVARS.bDevice], DEVICE_SERIAL_PORT
51%ifdef USE_386
52 jne IdeDPT_Finalize
53 jmp SerialDPT_Finalize
54%else
55 je SHORT .FinalizeDptForSerialPortDevice
56 jmp IdeDPT_Finalize
57.FinalizeDptForSerialPortDevice:
58 jmp SerialDPT_Finalize
59%endif
60
61%else ; IDE
62 Device_FinalizeDPT EQU IdeDPT_Finalize
63%endif
64
65
66;--------------------------------------------------------------------
67; Device_ResetMasterAndSlaveController
68; Parameters:
69; DS:DI: Ptr to DPT (in RAMVARS segment)
70; Returns:
71; AH: INT 13h Error Code
72; CF: Cleared if success, Set if error
73; Corrupts registers:
74; AL, BX, CX, DX
75;--------------------------------------------------------------------
76%ifdef MODULE_SERIAL ; IDE + Serial
77Device_ResetMasterAndSlaveController:
78 TEST_USING_DPT_AND_JUMP_IF_SERIAL_DEVICE ReturnSuccessForSerialPort
79 jmp IdeCommand_ResetMasterAndSlaveController
80
81%else ; IDE
82 Device_ResetMasterAndSlaveController EQU IdeCommand_ResetMasterAndSlaveController
83%endif
84
85
86;--------------------------------------------------------------------
87; Device_IdentifyToBufferInESSIwithDriveSelectByteInBH
88; Parameters:
89; BH: Drive Select byte for Drive and Head Select Register
90; CX: XUB_INT13h_SIGNATURE to ignore illegal ATA-ID values, otherwise
91; correct them (only used if NOT build with NO_ATAID_CORRECTION)
92; DX: Autodetected port (for devices that support autodetection)
93; DS: Segment to RAMVARS
94; ES:SI: Ptr to buffer to receive 512-byte IDE Information
95; CS:BP: Ptr to IDEVARS
96; Returns:
97; AH: INT 13h Error Code
98; CF: Cleared if success, Set if error
99; Corrupts registers:
100; AL, BX, CX, DX, SI, DI, ES
101;--------------------------------------------------------------------
102Device_IdentifyToBufferInESSIwithDriveSelectByteInBH:
103%ifndef NO_ATAID_CORRECTION
104 cmp cx, XUB_INT13h_SIGNATURE
105 je SHORT .DoNotFixAtaInformation
106 push es
107 push si
108 ePUSH_T cx, AtaID_PopESSIandFixIllegalValuesFromESSI ; Here we modify ATA information if necessary
109.DoNotFixAtaInformation:
110%endif
111
112%ifdef MODULE_SERIAL ; IDE + Serial
113 cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_SERIAL_PORT
114%ifdef USE_386
115 jne IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
116 jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
117%else
118 je SHORT .IdentifyDriveFromSerialPort
119 jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
120.IdentifyDriveFromSerialPort:
121 jmp SerialCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
122%endif
123
124%else ; IDE
125 jmp IdeCommand_IdentifyDeviceToBufferInESSIwithDriveSelectByteInBH
126%endif
127
128
129;--------------------------------------------------------------------
130; Device_OutputCommandWithParameters
131; Parameters:
132; BH: Default system timer ticks for timeout (can be ignored)
133; BL: IDE Status Register bit to poll after command
134; ES:SI: Ptr to buffer (for data transfer commands)
135; DS:DI: Ptr to DPT (in RAMVARS segment)
136; SS:BP: Ptr to IDEPACK
137; Returns:
138; AH: INT 13h Error Code
139; CX: Number of successfully transferred sectors (for transfer commands)
140; CF: Cleared if success, Set if error
141; Corrupts registers:
142; AL, BX, (CX), DX, (ES:SI for data transfer commands)
143;--------------------------------------------------------------------
144%ifdef MODULE_SERIAL ; IDE + Serial
145ALIGN JUMP_ALIGN
146Device_OutputCommandWithParameters:
147 test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE
148%ifdef USE_386
149 jz IdeCommand_OutputWithParameters
150 jmp SerialCommand_OutputWithParameters
151%else
152 jnz SHORT .OutputCommandToSerialPort
153 jmp IdeCommand_OutputWithParameters
154
155ALIGN JUMP_ALIGN
156.OutputCommandToSerialPort:
157 jmp SerialCommand_OutputWithParameters
158%endif
159
160%else ; IDE
161 Device_OutputCommandWithParameters EQU IdeCommand_OutputWithParameters
162%endif
163
164
165;--------------------------------------------------------------------
166; Device_SelectDrive
167; Parameters:
168; DS:DI: Ptr to DPT (in RAMVARS segment)
169; SS:BP: Ptr to IDEPACK
170; Returns:
171; AH: INT 13h Error Code
172; CF: Cleared if success, Set if error
173; Corrupts registers:
174; AL, BX, CX, DX
175;--------------------------------------------------------------------
176%ifdef MODULE_SERIAL ; IDE + Serial
177Device_SelectDrive:
178 test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE
179%ifndef USE_386
180 jnz SHORT ReturnSuccessForSerialPort
181 jmp IdeCommand_SelectDrive
182%else
183 jz IdeCommand_SelectDrive
184 ; Fall to ReturnSuccessForSerialPort
185%endif
186
187%else ; IDE
188 Device_SelectDrive EQU IdeCommand_SelectDrive
189%endif
190
191
192%ifdef MODULE_SERIAL
193ALIGN JUMP_ALIGN
194ReturnSuccessForSerialPort:
195 xor ax, ax
196 ret
197%endif
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