source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Device/Device.asm@ 618

Last change on this file since 618 was 617, checked in by Tomi Tilli, 3 years ago
  • Verify functions did not return correctly the number of succesfully verified sectors. That should be now fixed except for serial device. Serial device do not have error handling implemented yet.
File size: 7.3 KB
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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_ReadLBAlowRegisterToAL
167; Returns LBA low register / Sector number register contents.
168; Note that this returns valid value only after transfer command (read/write/verify)
169; has stopped to an error. Do not call this otherwise.
170; Parameters:
171; DS:DI: Ptr to DPT (in RAMVARS segment)
172; Returns:
173; AL: Byte read from the device register
174; Corrupts registers:
175; BX, DX
176;--------------------------------------------------------------------
177;%ifdef MODULE_SERIAL ; IDE + Serial
178;ALIGN JUMP_ALIGN
179;Device_ReadLBAlowRegisterToAL:
180; test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE
181;%ifdef USE_386
182; jz IdeCommand_ReadLBAlowRegisterToAL
183; jmp SerialCommand_ReadLBAlowRegisterToAL
184;%else
185; jnz SHORT .ReadFromSerialPort
186; jmp IdeCommand_ReadLBAlowRegisterToAL
187
188;ALIGN JUMP_ALIGN
189;.ReadFromSerialPort:
190; jmp SerialCommand_ReadLBAlowRegisterToAL
191;%endif
192
193;%else ; IDE only
194 Device_ReadLBAlowRegisterToAL EQU IdeCommand_ReadLBAlowRegisterToAL
195;%endif
196; TODO: For now we simply assume serial device do not produce verify errors
197
198
199;--------------------------------------------------------------------
200; Device_SelectDrive
201; Parameters:
202; DS:DI: Ptr to DPT (in RAMVARS segment)
203; SS:BP: Ptr to IDEPACK
204; Returns:
205; AH: INT 13h Error Code
206; CF: Cleared if success, Set if error
207; Corrupts registers:
208; AL, BX, CX, DX
209;--------------------------------------------------------------------
210%ifdef MODULE_SERIAL ; IDE + Serial
211Device_SelectDrive:
212 test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE
213%ifndef USE_386
214 jnz SHORT ReturnSuccessForSerialPort
215 jmp IdeCommand_SelectDrive
216%else
217 jz IdeCommand_SelectDrive
218 ; Fall to ReturnSuccessForSerialPort
219%endif
220
221%else ; IDE
222 Device_SelectDrive EQU IdeCommand_SelectDrive
223%endif
224
225
226%ifdef MODULE_SERIAL
227ALIGN JUMP_ALIGN
228ReturnSuccessForSerialPort:
229 xor ax, ax
230 ret
231%endif
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