source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeDPT.asm@ 482

Last change on this file since 482 was 473, checked in by aitotat@…, 12 years ago

Changes to XTIDE Universal BIOS:

  • Large changes to prepare full XT-CF support (DMA not yet implemented and memory mapped transfers are not working).
File size: 4.9 KB
RevLine 
[150]1; Project name : XTIDE Universal BIOS
2; Description : Sets IDE Device specific parameters to DPT.
3
[376]4;
[399]5; XTIDE Universal BIOS and Associated Tools
[376]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.
[399]12;
[376]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.
[399]17; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
18;
[376]19
[150]20; Section containing code
21SECTION .text
22
23;--------------------------------------------------------------------
24; IdeDPT_Finalize
25; Parameters:
26; DS:DI: Ptr to Disk Parameter Table
27; ES:SI: Ptr to 512-byte ATA information read from the drive
[160]28; CS:BP: Ptr to IDEVARS for the controller
[150]29; Returns:
[258]30; CF: Clear, IDE interface only supports hard disks
[150]31; Corrupts registers:
[363]32; AX, BX, CX, DX
[150]33;--------------------------------------------------------------------
34IdeDPT_Finalize:
35
[399]36%ifdef MODULE_FEATURE_SETS
[150]37;--------------------------------------------------------------------
[399]38; .DetectPowerManagementSupport
[150]39; Parameters:
40; DS:DI: Ptr to Disk Parameter Table
41; ES:SI: Ptr to 512-byte ATA information read from the drive
42; Returns:
43; Nothing
44; Corrupts registers:
[399]45; Nothing
[150]46;--------------------------------------------------------------------
[399]47.DetectPowerManagementSupport:
48 test BYTE [es:si+ATA6.wSetSup82], A6_wSetSup82_POWERMAN
[410]49 jz SHORT .NoPowerManagementSupport
[399]50 or BYTE [di+DPT.bFlagsHigh], FLGH_DPT_POWER_MANAGEMENT_SUPPORTED
51.NoPowerManagementSupport:
52%endif ; MODULE_FEATURE_SETS
53
[410]54
[399]55;--------------------------------------------------------------------
[410]56; .StoreDeviceType
57; Parameters:
58; DS:DI: Ptr to Disk Parameter Table
59; CS:BP: Ptr to IDEVARS for the controller
60; Returns:
61; Nothing
62; Corrupts registers:
63; AL
64;--------------------------------------------------------------------
65.StoreDeviceType:
[473]66 call IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP
[410]67
68
69;--------------------------------------------------------------------
[399]70; .StoreBlockMode
71; Parameters:
72; DS:DI: Ptr to Disk Parameter Table
73; Returns:
74; Nothing
75; Corrupts registers:
76; Nothing
77;--------------------------------------------------------------------
[150]78.StoreBlockMode:
[365]79 mov BYTE [di+DPT_ATA.bBlockSize], 1
[150]80
[410]81
[363]82%ifdef MODULE_ADVANCED_ATA
[160]83;--------------------------------------------------------------------
[363]84; .StorePioModeAndTimings
85; Parameters:
86; DS:DI: Ptr to Disk Parameter Table
87; ES:SI: Ptr to 512-byte ATA information read from the drive
88; CS:BP: Ptr to IDEVARS for the controller
89; Returns:
90; Nothing
91; Corrupts registers:
[364]92; AX, BX, CX
[363]93;--------------------------------------------------------------------
94.StorePioMode:
[364]95 call AtaID_GetMaxPioModeToAXandMinCycleTimeToCX
96 mov [di+DPT_ADVANCED_ATA.wMinPioCycleTime], cx
97 mov [di+DPT_ADVANCED_ATA.bPioMode], al
[399]98 or [di+DPT.bFlagsHigh], ah
[363]99
[410]100
[363]101;--------------------------------------------------------------------
102; .DetectAdvancedIdeController
103; Parameters:
104; DS:DI: Ptr to Disk Parameter Table
105; ES:SI: Ptr to 512-byte ATA information read from the drive
106; CS:BP: Ptr to IDEVARS for the controller
107; Returns:
108; Nothing
109; Corrupts registers:
110; AX, BX, CX, DX
111;--------------------------------------------------------------------
112.DetectAdvancedIdeController:
[473]113 mov bx, [di+DPT.wBasePort]
[364]114 call AdvAtaInit_DetectControllerForIdeBaseInBX
[363]115 mov [di+DPT_ADVANCED_ATA.wControllerID], ax ; Store zero if none detected
[364]116 mov [di+DPT_ADVANCED_ATA.wControllerBasePort], dx
[363]117 jnc SHORT .NoAdvancedControllerDetected
118
119 ; Use highest common PIO mode from controller and drive.
120 ; Many VLB controllers support PIO modes up to 2.
121 call AdvAtaInit_GetControllerMaxPioModeToAL
122 jnc SHORT .ChangeTo32bitDevice
[364]123 and BYTE [di+DPT.bFlagsHigh], ~FLGH_DPT_IORDY ; No IORDY supported if need to limit
124 MIN_U [di+DPT_ADVANCED_ATA.bPioMode], al
[363]125
126 ; We have detected 32-bit controller so change Device Type since
127 ; it might have been set to 16-bit on IDEVARS
128.ChangeTo32bitDevice:
[400]129 mov BYTE [di+DPT_ATA.bDevice], DEVICE_32BIT_ATA
[363]130.NoAdvancedControllerDetected:
[400]131%endif ; MODULE_ADVANCED_ATA
[363]132
133
[410]134; End DPT
135 clc
136 ret
137
138
[363]139;--------------------------------------------------------------------
[473]140; IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP
[363]141; Parameters:
142; DS:DI: Ptr to Disk Parameter Table
143; CS:BP: Ptr to IDEVARS for the controller
144; Returns:
145; Nothing
146; Corrupts registers:
147; AL
148;--------------------------------------------------------------------
[473]149IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP:
[363]150 mov al, [cs:bp+IDEVARS.bDevice]
[400]151 mov [di+DPT_ATA.bDevice], al
[363]152 ret
Note: See TracBrowser for help on using the repository browser.