1 | ; Project name : XTIDE Universal BIOS |
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2 | ; Description : Sets IDE Device specific parameters to DPT. |
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3 | |
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4 | ; |
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5 | ; XTIDE Universal BIOS and Associated Tools |
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6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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7 | ; |
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8 | ; This program is free software; you can redistribute it and/or modify |
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9 | ; it under the terms of the GNU General Public License as published by |
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10 | ; the Free Software Foundation; either version 2 of the License, or |
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11 | ; (at your option) any later version. |
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12 | ; |
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13 | ; This program is distributed in the hope that it will be useful, |
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14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | ; GNU General Public License for more details. |
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17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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18 | ; |
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19 | |
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20 | ; Section containing code |
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21 | SECTION .text |
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22 | |
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23 | ;-------------------------------------------------------------------- |
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24 | ; IdeDPT_Finalize |
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25 | ; Parameters: |
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26 | ; DS:DI: Ptr to Disk Parameter Table |
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27 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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28 | ; CS:BP: Ptr to IDEVARS for the controller |
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29 | ; Returns: |
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30 | ; CF: Clear, IDE interface only supports hard disks |
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31 | ; Corrupts registers: |
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32 | ; AX, BX, CX, DX |
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33 | ;-------------------------------------------------------------------- |
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34 | IdeDPT_Finalize: ; Unused entrypoint OK |
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35 | |
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36 | %ifdef MODULE_POWER_MANAGEMENT |
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37 | ;-------------------------------------------------------------------- |
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38 | ; .DetectPowerManagementSupport |
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39 | ; Parameters: |
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40 | ; DS:DI: Ptr to Disk Parameter Table |
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41 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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42 | ; Returns: |
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43 | ; Nothing |
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44 | ; Corrupts registers: |
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45 | ; AX |
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46 | ;-------------------------------------------------------------------- |
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47 | .DetectPowerManagementSupport: |
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48 | mov ax, A6_wSetSup83_APM << 8 | A6_wSetSup82_POWERMAN ; Both of these flags are bit 3 |
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49 | and ah, [es:si+ATA6.wSetSup83] |
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50 | and al, [es:si+ATA6.wSetSup82] |
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51 | eSHL_IM ah, 1 ; APM bit 3 to bit 4 (same as FLGH_DPT_APM_SUPPORTED) |
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52 | or al, ah |
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53 | or [di+DPT.bFlagsHigh], al ; FLGH_DPT_POWER_MANAGEMENT_SUPPORTED and FLGH_DPT_APM_SUPPORTED |
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54 | %endif ; MODULE_POWER_MANAGEMENT |
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55 | |
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56 | |
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57 | ;-------------------------------------------------------------------- |
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58 | ; .StoreDeviceType |
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59 | ; Parameters: |
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60 | ; DS:DI: Ptr to Disk Parameter Table |
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61 | ; CS:BP: Ptr to IDEVARS for the controller |
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62 | ; Returns: |
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63 | ; Nothing |
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64 | ; Corrupts registers: |
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65 | ; AL |
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66 | ;-------------------------------------------------------------------- |
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67 | .StoreDeviceType: |
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68 | call IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP |
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69 | |
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70 | |
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71 | ;-------------------------------------------------------------------- |
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72 | ; .StoreBlockMode |
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73 | ; Parameters: |
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74 | ; DS:DI: Ptr to Disk Parameter Table |
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75 | ; Returns: |
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76 | ; Nothing |
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77 | ; Corrupts registers: |
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78 | ; Nothing |
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79 | ;-------------------------------------------------------------------- |
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80 | .StoreBlockMode: |
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81 | mov BYTE [di+DPT_ATA.bBlockSize], 1 |
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82 | |
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83 | |
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84 | %ifdef MODULE_ADVANCED_ATA |
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85 | ;-------------------------------------------------------------------- |
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86 | ; .StorePioModeAndTimings |
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87 | ; Parameters: |
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88 | ; DS:DI: Ptr to Disk Parameter Table |
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89 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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90 | ; CS:BP: Ptr to IDEVARS for the controller |
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91 | ; Returns: |
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92 | ; Nothing |
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93 | ; Corrupts registers: |
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94 | ; AX, BX, CX |
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95 | ;-------------------------------------------------------------------- |
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96 | .StorePioMode: |
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97 | call AtaID_GetMaxPioModeToAXandMinCycleTimeToCX |
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98 | mov [di+DPT_ADVANCED_ATA.wMinPioCycleTime], cx |
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99 | mov [di+DPT_ADVANCED_ATA.bPioMode], al |
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100 | or [di+DPT.bFlagsHigh], ah |
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101 | |
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102 | |
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103 | ;-------------------------------------------------------------------- |
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104 | ; .DetectAdvancedIdeController |
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105 | ; Parameters: |
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106 | ; DS:DI: Ptr to Disk Parameter Table |
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107 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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108 | ; CS:BP: Ptr to IDEVARS for the controller |
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109 | ; Returns: |
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110 | ; Nothing |
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111 | ; Corrupts registers: |
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112 | ; AX, BX, CX, DX |
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113 | ;-------------------------------------------------------------------- |
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114 | .DetectAdvancedIdeController: |
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115 | ; Detection is only relevant on standard devices. XT-CF seems to give false positive for |
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116 | ; PDC20x30 detection so better to skip detection for 8-bit devices |
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117 | cmp BYTE [di+DPT_ATA.bDevice], DEVICE_32BIT_ATA |
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118 | ja SHORT .NoAdvancedControllerDetected |
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119 | |
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120 | mov bx, [di+DPT.wBasePort] |
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121 | call AdvAtaInit_DetectControllerForIdeBaseInBX |
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122 | mov [di+DPT_ADVANCED_ATA.wControllerID], ax ; Store zero if none detected |
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123 | mov [di+DPT_ADVANCED_ATA.wControllerBasePort], dx |
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124 | jnc SHORT .NoAdvancedControllerDetected |
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125 | |
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126 | ; Use highest common PIO mode from controller and drive. |
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127 | ; Many VLB controllers support PIO modes up to 2. |
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128 | call AdvAtaInit_GetControllerMaxPioModeToALandMinPioCycleTimeToBX |
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129 | jnz SHORT .ChangeTo32bitDevice |
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130 | |
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131 | and [di+DPT.bFlagsHigh], ah ; Mask off FLGH_DPT_IORDY if IORDY not supported |
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132 | MIN_U [di+DPT_ADVANCED_ATA.bPioMode], al |
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133 | mov [di+DPT_ADVANCED_ATA.wMinPioCycleTime], bx |
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134 | |
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135 | ; We have detected 32-bit controller so change Device Type |
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136 | ; since it might have been set to 16-bit on IDEVARS |
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137 | .ChangeTo32bitDevice: |
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138 | ; *FIXME* We might need to add code to detect the IBM 486SLC2 CPU (and possibly other |
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139 | ; 386+ class CPUs with a 16-bit external bus?) to avoid changing to DEVICE_32BIT_ATA. |
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140 | mov BYTE [di+DPT_ATA.bDevice], DEVICE_32BIT_ATA |
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141 | .NoAdvancedControllerDetected: |
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142 | %endif ; MODULE_ADVANCED_ATA |
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143 | |
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144 | ; End DPT |
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145 | clc |
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146 | ret |
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147 | |
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148 | |
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149 | ;-------------------------------------------------------------------- |
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150 | ; IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP |
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151 | ; Parameters: |
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152 | ; DS:DI: Ptr to Disk Parameter Table |
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153 | ; CS:BP: Ptr to IDEVARS for the controller |
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154 | ; Returns: |
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155 | ; Nothing |
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156 | ; Corrupts registers: |
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157 | ; AL |
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158 | ;-------------------------------------------------------------------- |
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159 | IdeDPT_StoreDeviceTypeToDPTinDSDIfromIdevarsInCSBP: |
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160 | mov al, [cs:bp+IDEVARS.bDevice] |
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161 | mov [di+DPT_ATA.bDevice], al |
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162 | ret |
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